/* roulang page: index */
:root{
            --bg:#070d16;
            --bg-deep:#0b1420;
            --bg-soft:#101d2b;
            --blue:#3b82f6;
            --blue-deep:#2e7cf6;
            --cyan:#22d3ee;
            --ice:#0ea5e9;
            --violet:#6366f1;
            --white:#f8fafc;
            --text-1:#f1f5f9;
            --text-2:#cbd5e1;
            --text-3:#7f8ea3;
            --border:rgba(255,255,255,.08);
            --glass:rgba(255,255,255,.04);
            --radius:22px;
            --shadow:0 20px 60px rgba(0,0,0,0.35);
        }
        *{margin:0;padding:0;box-sizing:border-box;}
        html{scroll-behavior:smooth;}
        body{
            background:var(--bg);
            color:var(--text-1);
            font-family:'PingFang SC','Microsoft YaHei','Noto Sans CJK SC','Helvetica Neue',sans-serif;
            line-height:1.75;
            overflow-x:hidden;
            -webkit-font-smoothing:antialiased;
        }
        .container-custom{max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;}
        img{display:block;max-width:100%;height:auto;}
        a{color:inherit;text-decoration:none;transition:all .25s ease;}
        button{font-family:inherit;border:none;cursor:pointer;}
        .font-num{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.02em;}
        /* Header */
        .site-topbar{
            height:38px;
            background:rgba(4,8,14,.8);
            border-bottom:1px solid rgba(255,255,255,.05);
            font-size:13px;
            color:var(--text-3);
            backdrop-filter:blur(8px);
        }
        .site-topbar a{color:var(--text-2);}
        .site-topbar a:hover{color:var(--cyan);}
        .site-header{
            background:rgba(7,13,22,.65);
            backdrop-filter:blur(18px);
            position:sticky;
            top:0;
            z-index:50;
            border-bottom:1px solid rgba(255,255,255,.05);
            transition:box-shadow .2s, background .2s;
            min-height:72px;
        }
        .site-header.scrolled{
            background:rgba(7,13,22,.88);
            box-shadow:0 10px 40px rgba(0,0,0,.35);
        }
        .site-header .nav-wrap{display:flex;align-items:center;min-height:72px;gap:20px;}
        .brand-logo{display:flex;flex-direction:column;line-height:1.15;margin-right:18px;flex-shrink:0;position:relative;}
        .brand-logo .brand-main{font-size:22px;font-weight:800;letter-spacing:1px;color:#fff;white-space:nowrap;}
        .brand-logo .brand-main span{color:var(--cyan);}
        .brand-logo .brand-sub{font-size:11px;color:var(--text-2);font-weight:500;letter-spacing:3px;margin-top:2px;background:rgba(34,211,238,.15);display:inline-block;padding:0 7px;border-radius:20px;}
        .nav-links{display:flex;align-items:center;gap:32px;margin-left:auto;}
        .nav-links a{
            font-size:15px;
            color:var(--text-1);
            font-weight:500;
            position:relative;
            padding:8px 2px;
            white-space:nowrap;
        }
        .nav-links a:hover{color:var(--cyan);}
        .nav-links a.active{color:#fff;}
        .nav-links a.active:after{
            content:'';position:absolute;left:0;right:0;bottom:0;height:2px;
            background:linear-gradient(90deg,var(--cyan),transparent);
            border-radius:20px;box-shadow:0 0 12px var(--cyan);
        }
        .header-cta{
            background:linear-gradient(135deg,#2563eb 0%,#22d3ee 100%);
            border-radius:60px;
            padding:9px 22px;
            color:#fff;
            font-size:14px;
            font-weight:600;
            box-shadow:0 0 20px rgba(34,211,238,.25);
            transition:.25s;
            margin-left:18px;
        }
        .header-cta:hover{
            transform:translateY(-2px);
            box-shadow:0 8px 30px rgba(34,211,238,.4);
        }
        .btn-login{
            background:transparent;
            border:1px solid rgba(255,255,255,.2);
            color:var(--text-1);
            border-radius:60px;
            padding:7px 18px;
            font-size:14px;
        }
        .btn-login:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.4);}
        .menu-mobile{display:none;cursor:pointer;background:transparent;width:40px;height:40px;border-radius:10px;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.1);}
        .menu-mobile span{display:block;width:18px;height:2px;background:#fff;margin:3px 0;border-radius:2px;transition:.3s;}
        .drawer{
            display:none;
            position:fixed;
            inset:0;
            background:rgba(7,13,22,.92);
            backdrop-filter:blur(30px);
            z-index:80;
            padding:100px 30px 30px;
        }
        .drawer.show{display:flex;flex-direction:column;}
        .drawer .close-drawer{margin-left:auto;background:transparent;color:#fff;font-size:24px;padding:8px 14px;}
        .drawer a{font-size:24px;font-weight:400;color:var(--text-1);padding:16px 0;border-bottom:1px solid rgba(255,255,255,.08);}
        .drawer a:hover{color:var(--cyan);}
        .drawer a.active{color:var(--cyan);}
        .drawer .header-cta{margin-top:30px;text-align:center;display:inline-block;}
        @media (max-width: 1023px){
            .nav-links,.header-cta,.btn-login{display:none;}
            .menu-mobile{display:flex;}
        }
        @media (min-width: 1024px){
            .drawer{display:none !important;}
        }
        /* Hero */
        .hero{
            position:relative;
            min-height:82vh;
            display:flex;
            align-items:center;
            padding:70px 0;
            background: url('/assets/images/backpic/back-1.png') center 30% / cover no-repeat;
        }
        .hero .bg-cover{position:absolute;inset:0;background:linear-gradient(105deg, rgba(7,13,22,.96) 15%, rgba(7,13,22,.75) 55%, rgba(7,13,22,.35) 100%);}
        .hero .bg-grid{
            position:absolute;inset:0;
            background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
            background-size:60px 60px;
            mask-image:radial-gradient(circle at 30% 50%,#000,transparent 80%);
        }
        .hero-content{position:relative;z-index:2;max-width:680px;}
        .hero .hero-tag{
            display:inline-flex;
            gap:8px;
            align-items:center;
            border:1px solid rgba(34,211,238,.3);
            background:rgba(34,211,238,.08);
            color:var(--cyan);
            font-size:13.5px;
            border-radius:50px;
            padding:5px 15px;
            margin-bottom:28px;
            letter-spacing:.5px;
        }
        .hero h1{
            font-size:56px;
            line-height:1.15;
            color:#fff;
            letter-spacing:1px;
            font-weight:800;
            margin-bottom:24px;
            text-shadow:0 8px 40px rgba(0,0,0,.4);
        }
        .hero h1 .gradient-text{
            background:linear-gradient(110deg,#6ba3ff 0%,#a6e7ff 60%,#22d3ee 100%);
            -webkit-background-clip:text;background-clip:text;
            -webkit-text-fill-color:transparent;
        }
        .hero-desc{
            color:var(--text-2);
            font-size:17px;
            line-height:1.9;
            max-width:590px;
            margin-bottom:35px;
        }
        .hero-actions{display:flex;gap:18px;flex-wrap:wrap;}
        .btn-primary{
            background:linear-gradient(135deg,#2563eb,#22d3ee);
            border-radius:60px;
            padding:13px 36px;
            color:#fff;
            font-size:16px;
            font-weight:700;
            box-shadow:0 6px 30px rgba(34,211,238,.2), inset 0 0 12px rgba(255,255,255,.05);
            display:inline-flex;
            align-items:center;
            gap:8px;
            transition:.3s;
        }
        .btn-primary:hover{
            transform:translateY(-2px);
            box-shadow:0 10px 40px rgba(34,211,238,.5),0 0 0 1px rgba(34,211,238,.2);
        }
        .btn-secondary{
            border:1px solid rgba(255,255,255,.2);
            background:rgba(255,255,255,.05);
            border-radius:60px;
            padding:13px 32px;
            color:var(--text-1);
            font-size:16px;
            font-weight:600;
            backdrop-filter:blur(8px);
            transition:.3s;
        }
        .btn-secondary:hover{background:rgba(255,255,255,.12);border-color:rgba(34,211,238,.5);}
        .hero-status{
            display:flex;gap:24px;margin-top:45px;flex-wrap:wrap;
            border-top:1px solid rgba(255,255,255,.08);
            padding-top:22px;
            width:fit-content;
        }
        .hero-status .status-item{display:flex;align-items:center;gap:8px;color:var(--text-3);font-size:13px;}
        .status-dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 20px var(--cyan);}
        .hero-glass{
            position:absolute;
            right:80px;
            z-index:2;
            width:380px;
            backdrop-filter:blur(20px);
            background:rgba(255,255,255,.06);
            border:1px solid rgba(255,255,255,.12);
            border-radius:26px;
            padding:30px;
            box-shadow:0 30px 60px rgba(0,0,0,.5);
            display:block;
            animation:float 5s ease-in-out infinite;
        }
        @keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
        .hero-glass .glass-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;}
        .hero-glass .glass-title{font-size:17px;color:#fff;font-weight:700;}
        .hero-glass .glass-line{height:10px;border-radius:10px;margin-bottom:13px;background:linear-gradient(90deg,rgba(255,255,255,.08),rgba(255,255,255,.02));}
        .hero-glass .glass-btn-box{margin-top:24px;}
        .glass-status{display:flex;align-items:center;gap:10px;color:var(--text-2);margin-top:20px;font-size:14px;}
        .glass-status i{width:9px;height:9px;background:var(--cyan);border-radius:50%;}
        @media (max-width: 1200px){ .hero-glass{right:20px;transform:scale(.9);} }
        @media (max-width: 1023px){
            .hero{min-height:auto;padding:60px 0;}
            .hero-content{max-width:100%;}
            .hero h1{font-size:40px;}
            .hero-glass{display:none;}
        }
        @media (max-width: 520px){
            .hero h1{font-size:30px;line-height:1.3;}
            .hero-desc{font-size:15px;}
            .hero-actions .btn-primary,.hero-actions .btn-secondary{width:100%;justify-content:center;}
        }
        /* section */
        .section{padding:100px 0;}
        .section-tight{padding:70px 0;}
        .section-alt{background:linear-gradient(180deg,#0b1420 0%,#0f1b28 50%,#070d16 100%);}
        .section-title-wrap{max-width:760px;margin-bottom:55px;}
        .section-title{font-size:38px;line-height:1.25;color:#fff;font-weight:800;margin-bottom:16px;}
        .section-sub{color:var(--text-2);font-size:16px;}
        .eyebrow{
            display:inline-block;
            color:var(--cyan);
            font-size:13px;
            letter-spacing:3px;
            font-weight:600;
            text-transform:uppercase;
            margin-bottom:12px;
        }
        .section-divider{height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.08),transparent);}
        .icon-linear{display:inline-flex;width:44px;height:44px;border-radius:14px;align-items:center;justify-content:center;background:rgba(34,211,238,.12);color:var(--cyan);}
        /* value bar */
        .valuebar-grid{
            display:grid;
            grid-template-columns:repeat(4,1fr);
            background:rgba(255,255,255,.025);
            border:1px solid var(--border);
            border-radius:24px;
            overflow:hidden;
        }
        .valuebar-item{padding:30px 24px;border-right:1px solid var(--border);}
        .valuebar-item:last-child{border-right:none;}
        .valuebar-item .num{font-size:30px;font-weight:800;color:#fff;margin-bottom:5px;font-family:ui-monospace,monospace;}
        .valuebar-item .desc{color:var(--text-3);font-size:13px;}
        .valuebar-item:not(:first-child){border-left:1px solid rgba(0,0,0,.12);}
        @media (max-width: 1023px){.valuebar-grid{grid-template-columns:1fr 1fr;} .valuebar-item:nth-child(2){border-right:none;}}
        @media (max-width: 520px){.valuebar-grid{grid-template-columns:1fr;} .valuebar-item{border-right:none!important;border-left:none!important;}}
        /* feature cards */
        .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
        .card-glass{
            background:rgba(255,255,255,.03);
            border:1px solid rgba(255,255,255,.08);
            backdrop-filter:blur(14px);
            border-radius:26px;
            padding:34px 28px;
            transition:all .35s;
            position:relative;
            overflow:hidden;
        }
        .card-glass:hover{
            background:rgba(255,255,255,.06);
            border-color:rgba(34,211,238,.3);
            transform:translateY(-5px);
            box-shadow:0 24px 50px rgba(0,0,0,.3);
        }
        .card-icon{
            width:64px;height:64px;border-radius:20px;
            background:linear-gradient(135deg,rgba(37,99,235,.18),rgba(34,211,238,.1));
            border:1px solid rgba(255,255,255,.1);
            display:flex;align-items:center;justify-content:center;
            margin-bottom:22px;
            color:var(--cyan);
        }
        .card-glass h3{font-size:22px;color:#fff;margin-bottom:14px;font-weight:700;}
        .card-glass p{color:var(--text-2);font-size:15px;margin-bottom:0;}
        @media (max-width: 1023px){.feature-grid{grid-template-columns:1fr 1fr;}}
        @media (max-width: 520px){.feature-grid{grid-template-columns:1fr;}}
        /* mixed block */
        .scenario-wrap{
            display:grid;
            grid-template-columns:1.1fr .9fr;
            gap:56px;
            align-items:center;
        }
        .scenario-media{
            display:grid;
            grid-template-columns:1fr 1fr;
            gap:20px;
        }
        .media-img{border-radius:26px;overflow:hidden;min-height:180px;background-size:cover;background-position:center;}
        .scenario-list{list-style:none;}
        .scenario-list li{
            display:flex;
            gap:16px;
            padding:18px 0;
            border-bottom:1px solid rgba(255,255,255,.06);
            align-items:flex-start;
        }
        .scenario-list li .step-num{
            background:rgba(34,211,238,.1);
            color:var(--cyan);
            border-radius:10px;
            padding:4px 10px;
            font-size:14px;
            font-weight:700;
            flex-shrink:0;
        }
        .scenario-list strong{display:block;font-weight:700;color:#fff;font-size:17px;margin-bottom:5px;}
        .scenario-list p{color:var(--text-3);font-size:14px;margin-bottom:0;line-height:1.6;}
        @media (max-width: 1023px){.scenario-wrap{grid-template-columns:1fr;} .scenario-media{order:2;}}
        @media (max-width: 520px){.scenario-media{grid-template-columns:1fr;}}
        /* latest info */
        .latest-header{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:40px;flex-wrap:wrap;gap:15px;}
        .latest-list{display:grid;gap:20px;}
        .post-item{
            display:flex;
            gap:26px;
            background:rgba(0,0,0,.22);
            border:1px solid rgba(255,255,255,.06);
            border-radius:20px;
            padding:20px 20px;
            align-items:center;
            transition:.3s;
        }
        .post-item:hover{border-color:rgba(34,211,238,.4);transform:translateX(5px);background:rgba(0,0,0,.35);}
        .post-cover{
            width:180px;height:112px;border-radius:16px;object-fit:cover;flex-shrink:0;
            background:linear-gradient(130deg,#1e3a8a,#22d3ee);
        }
        .post-content{min-width:0;}
        .post-content .post-cat{display:inline-block;font-size:13px;background:rgba(34,211,238,.1);padding:3px 10px;border-radius:30px;color:var(--cyan);margin-bottom:8px;}
        .post-content h3{font-size:19px;color:#fff;font-weight:600;line-height:1.4;margin-bottom:6px;}
        .post-content p{color:var(--text-2);font-size:14px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
        .post-meta{display:flex;gap:20px;color:var(--text-3);font-size:12px;margin-top:10px;}
        .empty-box{
            border:1px dashed rgba(255,255,255,.2);
            border-radius:20px;
            padding:40px 20px;
            text-align:center;
            color:var(--text-3);
            background:rgba(255,255,255,.02);
            max-width:560px;
        }
        @media (max-width: 768px){
            .post-item{flex-direction:column;align-items:stretch;padding:15px;}
            .post-cover{width:100%;height:140px;}
        }
        /* stats block */
        .stats-grid{
            display:grid;
            grid-template-columns:repeat(3,1fr);
            gap:28px;
            background:linear-gradient(130deg,rgba(37,99,235,.10),rgba(34,211,238,.05));
            border:1px solid rgba(255,255,255,.08);
            border-radius:28px;
            padding:48px 40px;
        }
        .stat-num{font-size:42px;font-weight:800;color:#fff;font-family:ui-monospace,monospace;}
        .stat-label{color:var(--text-2);}
        @media (max-width: 768px){.stats-grid{grid-template-columns:1fr;padding:30px;gap:20px;}}
        /* pricing */
        .price-grid{display:flex;gap:24px;justify-content:center;align-items:stretch;flex-wrap:wrap;}
        .price-card{
            flex:1;
            min-width:280px;
            max-width:380px;
            background:rgba(255,255,255,.03);
            border:1px solid rgba(255,255,255,.08);
            backdrop-filter:blur(12px);
            border-radius:24px;
            padding:40px 30px;
            transition:.3s;
        }
        .price-card:hover{border-color:rgba(255,255,255,.18);transform:translateY(-6px);}
        .price-card.featured{
            background:linear-gradient(160deg,rgba(37,99,235,.28),rgba(34,211,238,.12));
            border-color:rgba(34,211,238,.7);
            box-shadow:0 15px 50px rgba(34,211,238,.2);
            transform:scale(1.03);
            max-width:400px;
        }
        .price-card.featured:hover{transform:translateY(-8px) scale(1.03);}
        .price-card .price-name{font-size:20px;font-weight:700;color:#fff;margin-bottom:10px;}
        .price-card .price-amount{font-size:34px;font-weight:800;color:#fff;margin-bottom:20px;font-family:ui-monospace,monospace;}
        .price-card .price-amount small{font-size:16px;color:var(--text-3);}
        .price-card ul{list-style:none;margin-bottom:26px;}
        .price-card li{color:var(--text-2);font-size:15px;padding-left:22px;position:relative;margin-bottom:12px;}
        .price-card li::before{content:'';position:absolute;left:2px;top:6px;width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan);}
        .badge-featured{background:linear-gradient(90deg,var(--cyan),#2563eb);color:#fff;padding:6px 12px;border-radius:40px;font-size:13px;display:inline-block;margin-bottom:14px;}
        @media (max-width: 1023px){.price-grid{flex-direction:column;align-items:center;} .price-card.featured{order:-1;}}
        /* Faq */
        .faq-list{display:grid;gap:16px;max-width:900px;margin:0 auto;}
        .faq-item{
            background:rgba(255,255,255,.03);
            border:1px solid rgba(255,255,255,.07);
            border-radius:20px;
            padding:24px 28px;
            cursor:pointer;
            transition:all .3s;
        }
        .faq-item.active{border-color:rgba(34,211,238,.4);background:rgba(34,211,238,.04);}
        .faq-q{display:flex;justify-content:space-between;align-items:center;color:#fff;font-size:17px;font-weight:600;gap:16px;}
        .faq-q .icon{flex-shrink:0;width:26px;height:26px;border-radius:50%;background:rgba(34,211,238,.1);display:flex;align-items:center;justify-content:center;transition:.4s;color:var(--cyan);}
        .faq-item.active .faq-q .icon{transform:rotate(45deg);background:rgba(34,211,238,.2);}
        .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease, padding .2s;color:var(--text-2);font-size:15px;line-height:1.8;}
        .faq-item.active .faq-a{max-height:400px;padding-top:16px;}
        /* cta */
        .cta-panel{
            background:linear-gradient(120deg,rgba(37,99,235,.55),rgba(34,211,238,.2)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border-radius:30px;
            padding:75px 50px;
            text-align:center;
            border:1px solid rgba(255,255,255,.1);
        }
        .cta-panel .inner{background:rgba(7,13,22,.4);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.1);border-radius:22px;padding:45px 30px;display:inline-block;}
        @media (max-width: 768px){.cta-panel{padding:24px;} .cta-panel .inner{padding:30px 20px;}}
        /* footer */
        footer{background:rgba(4,8,14,.95);border-top:1px solid rgba(255,255,255,.05);color:#b6c4da;padding-top:65px;}
        .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:45px;}
        .footer-brand .footer-logo{font-size:24px;font-weight:800;color:#fff;}
        .footer-brand p{color:var(--text-3);font-size:14px;line-height:1.8;max-width:300px;}
        .footer-title{font-size:16px;color:#fff;margin-bottom:18px;font-weight:600;}
        .footer-links a{display:block;color:var(--text-3);padding:5px 0;font-size:14px;}
        .footer-links a:hover{color:var(--cyan);}
        .footer-bottom{border-top:1px solid rgba(255,255,255,.06);padding:26px 0;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;font-size:13px;color:var(--text-3);}
        @media (max-width: 900px){.footer-grid{grid-template-columns:1fr 1fr;} }
        @media (max-width: 520px){.footer-grid{grid-template-columns:1fr;} }
        /* tags */
        .tag{
            display:inline-block;background:rgba(34,211,238,.08);color:var(--cyan);
            border-radius:30px;font-size:13px;padding:3px 12px;margin:0 6px 8px 0;
            transition:.25s;border:1px solid transparent;
        }
        .tag:hover{border-color:rgba(34,211,238,.3);}
        .text-gradient{background:linear-gradient(120deg,#76b4ff,#22d3ee);-webkit-background-clip:text;-webkit-text-fill-color:transparent;}
        .glass-card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06);border-radius:20px;padding:24px;backdrop-filter:blur(12px);}
        .badge{display:inline-block;font-size:12px;background:rgba(255,255,255,.08);padding:4px 10px;border-radius:40px;color:#cbd5e1;}
        /* scroll focus accessibility */
        button:focus-visible,a:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:8px;}
        .btn-primary-ghost{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);border-radius:60px;padding:13px 28px;color:#fff;display:inline-block;}
        .btn-primary-ghost:hover{background:rgba(255,255,255,.15);border-color:rgba(255,255,255,.3);}
        .small-note{font-size:12px;color:#7f8ea3;}
        @media (max-width:768px){
            .section{padding:65px 0;}
            .section-title{font-size:29px;}
            .hero h1{font-size:32px;}
        }

/* roulang page: category1 */
:root {
            --bg-deep: #070D16;
            --bg-body: #0B1420;
            --bg-panel: #0F1B2B;
            --bg-panel-2: #111E30;
            --bg-glass: rgba(255, 255, 255, 0.04);
            --border-glass: rgba(255, 255, 255, 0.08);
            --primary: #2E7CF6;
            --primary-2: #0EA5E9;
            --cyan: #22D3EE;
            --purple: #6366F1;
            --title: #F8FAFC;
            --body: #CBD5E1;
            --dim: #94A3B8;
            --muted: #64748B;
            --radius-xl: 24px;
            --radius-lg: 18px;
            --radius-md: 12px;
            --shadow-card: 0 20px 50px rgba(1, 8, 18, 0.35);
            --glow-cyan: 0 0 28px rgba(34, 211, 238, 0.25);
            --glow-blue: 0 8px 30px rgba(46, 124, 246, 0.3);
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            background-color: var(--bg-deep);
            color: var(--body);
            line-height: 1.7;
            font-size: 16px;
            margin: 0;
        }
        .container-custom {
            width: min(1200px, 92%);
            margin: 0 auto;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
        }
        h1,
        h2,
        h3,
        h4 {
            color: var(--title);
            font-weight: 700;
            margin: 0;
            line-height: 1.3;
        }
        p {
            margin: 0;
        }
        section {
            position: relative;
        }
        .text-cyan-grad {
            background: linear-gradient(115deg, #F8FAFC 10%, #7DD3FC 55%, #22D3EE 110%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .eyebrow {
            font-size: 13px;
            letter-spacing: .12em;
            text-transform: uppercase;
            color: var(--cyan);
            font-weight: 600;
        }
        .section-pad {
            padding: 96px 0;
        }
        .section-head {
            max-width: 760px;
            margin-bottom: 48px;
        }
        .section-title {
            font-size: 38px;
            line-height: 1.25;
            margin-top: 12px;
        }
        .section-sub {
            margin-top: 16px;
            color: var(--dim);
            font-size: 16px;
            line-height: 1.8;
        }
        .breadcrumb {
            font-size: 13px;
            color: var(--muted);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 24px;
            letter-spacing: .02em;
        }
        .breadcrumb a {
            color: var(--dim);
        }
        .breadcrumb a:hover {
            color: var(--cyan);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            border-radius: 12px;
            padding: 14px 26px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            transition: all .25s ease;
            cursor: pointer;
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-2) 60%, var(--cyan) 140%);
            color: #fff;
            box-shadow: 0 4px 20px rgba(14, 165, 233, .25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--glow-cyan);
        }
        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(.9);
        }
        .btn-primary:focus-visible,
        .btn-outline:focus-visible,
        .nav-cta:focus-visible,
        a:focus-visible {
            outline: 3px solid rgba(34, 211, 238, .5);
            outline-offset: 3px;
        }
        .btn-outline {
            background: rgba(255, 255, 255, .04);
            color: var(--body);
            border-color: rgba(255, 255, 255, .2);
            backdrop-filter: blur(10px);
        }
        .btn-outline:hover {
            border-color: rgba(255, 255, 255, .55);
            background: rgba(255, 255, 255, .08);
        }
        .btn-sm {
            padding: 10px 18px;
            font-size: 14px;
            border-radius: 10px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            padding: 5px 12px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .12);
            color: var(--dim);
            cursor: default;
            letter-spacing: .02em;
        }
        .glass-card {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
        }
        .status-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--cyan);
            box-shadow: 0 0 12px rgba(34, 211, 238, .6);
        }
        /* header */
        .topbar {
            background: rgba(3, 8, 15, .88);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            font-size: 13px;
            color: var(--muted);
        }
        .topbar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            min-height: 36px;
            gap: 20px;
        }
        .topbar-left,
        .topbar-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .topbar a {
            color: var(--dim);
        }
        .topbar a:hover {
            color: var(--cyan);
        }
        .topbar .sep {
            width: 1px;
            height: 14px;
            background: rgba(255, 255, 255, .1);
        }
        .navbar {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(7, 13, 22, .72);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, .07);
            transition: all .3s;
        }
        .navbar.scrolled .navbar-inner {
            min-height: 66px;
        }
        .navbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            min-height: 72px;
            transition: min-height .3s;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            color: #fff;
        }
        .brand-name {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: .02em;
            background: linear-gradient(90deg, #fff, #B0D8FF 70%, #7FD6F2);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .brand-tag {
            background: linear-gradient(135deg, #0EA5E9, #22D3EE);
            color: #fff;
            font-size: 10px;
            font-weight: 800;
            padding: 4px 8px 3px;
            border-radius: 7px;
            letter-spacing: .06em;
            transform: translateY(-3px);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 26px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .nav-links a {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--body);
            padding: 8px 2px;
            transition: color .2s;
        }
        .nav-links a:hover {
            color: #fff;
        }
        .nav-links a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -1px;
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, #22D3EE, #0EA5E9);
            transition: width .25s;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: #fff;
        }
        .nav-cta {
            padding: 10px 22px;
        }
        .mobile-toggle {
            display: none;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .15);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            color: #fff;
        }
        .mobile-toggle span {
            display: block;
            width: 18px;
            height: 1.5px;
            background: #fff;
        }
        .mobile-panel {
            display: none;
        }
        /* hero */
        .hero-section {
            padding: 84px 0 72px;
            position: relative;
            overflow: hidden;
            background-image: linear-gradient(rgba(7, 13, 22, .9), rgba(7, 13, 22, .92)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
        }
        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(circle at 10% 20%, rgba(46, 124, 246, .14), transparent 40%),
                radial-gradient(circle at 90% 10%, rgba(34, 211, 238, .12), transparent 38%),
                linear-gradient(transparent 24%, rgba(255, 255, 255, .02) 25%, transparent 26%);
            background-size: auto, auto, 100% 4px;
            pointer-events: none;
        }
        .hero-inner {
            position: relative;
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 52px;
            align-items: center;
        }
        .hero-title {
            font-size: clamp(34px, 4.6vw, 52px);
            line-height: 1.2;
            margin-top: 12px;
            letter-spacing: -.02em;
            font-weight: 800;
        }
        .hero-sub {
            font-size: 17px;
            line-height: 1.8;
            color: var(--dim);
            margin-top: 24px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-top: 34px;
            flex-wrap: wrap;
        }
        .hero-chip-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 36px;
        }
        .hero-chip-list .tag {
            color: var(--dim);
            border-color: rgba(255, 255, 255, .1);
        }
        .hero-panel {
            padding: 28px 24px;
            border-radius: 22px;
        }
        .hero-panel-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 14px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .hero-panel-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 2px;
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            font-size: 14px;
        }
        .hero-panel-item:last-child {
            border-bottom: none;
        }
        .hero-panel-item .label {
            color: var(--muted);
        }
        .hero-panel-item .value {
            color: var(--body);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .panel-feature {
            margin-top: 8px;
            display: flex;
            justify-content: space-between;
            gap: 8px;
        }
        .panel-feature .feature-card {
            padding: 4px 8px;
        }
        /* anchor */
        .anchor-bar {
            background: var(--bg-body);
            border-bottom: 1px solid rgba(255, 255, 255, .07);
            padding: 18px 0;
            position: sticky;
            top: 72px;
            z-index: 40;
        }
        .anchor-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }
        .anchor-list a {
            font-size: 13px;
            color: var(--dim);
            padding: 7px 16px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .1);
            transition: all .2s;
        }
        .anchor-list a:hover {
            color: var(--cyan);
            border-color: rgba(34, 211, 238, .4);
        }
        /* cards */
        .resource-card {
            background: linear-gradient(150deg, rgba(255, 255, 255, .055), rgba(255, 255, 255, .02));
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: transform .25s, box-shadow .25s, border-color .25s;
            display: block;
        }
        .resource-card:hover {
            transform: translateY(-6px);
            border-color: rgba(34, 211, 238, .25);
            box-shadow: 0 24px 60px rgba(1, 8, 18, .5);
        }
        .resource-card-frame {
            display: flex;
            height: 100%;
            flex-direction: column;
        }
        .resource-card-h {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
        }
        .resource-card-h .media {
            height: 100%;
            min-height: 210px;
        }
        .resource-body {
            padding: 24px 26px 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .resource-body h3 {
            font-size: 21px;
            margin-top: 20px;
        }
        .resource-body p {
            color: var(--dim);
            font-size: 15px;
            line-height: 1.75;
            margin-top: 12px;
        }
        .resource-link {
            margin-top: auto;
            padding-top: 18px;
            font-size: 14px;
            color: var(--cyan);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .resource-link i {
            font-style: normal;
            transition: transform .2s;
        }
        .resource-card:hover .resource-link i {
            transform: translateX(5px);
        }
        .media {
            position: relative;
            background: #0f2238;
            overflow: hidden;
        }
        .media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .55s ease;
        }
        .media img:hover {
            transform: scale(1.04);
        }
        .media .cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(110deg, rgba(7, 13, 22, .32), transparent 60%, rgba(7, 13, 22, .16));
        }
        /* dir table */
        .dir-panel {
            background: linear-gradient(180deg, rgba(255, 255, 255, .03), rgba(255, 255, 255, .012));
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius-xl);
            overflow: hidden;
        }
        .dir-row {
            display: grid;
            grid-template-columns: 80px 1.4fr 2fr 100px;
            gap: 24px;
            align-items: center;
            padding: 26px 30px;
            border-bottom: 1px solid rgba(255, 255, 255, .07);
            transition: background .2s;
        }
        .dir-row:last-child {
            border-bottom: none;
        }
        .dir-row:hover {
            background: rgba(255, 255, 255, .025);
        }
        .dir-num {
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            font-size: 20px;
            color: var(--cyan);
            opacity: .8;
        }
        .dir-name {
            font-size: 17px;
            font-weight: 600;
            color: #E2E8F0;
        }
        .dir-desc {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.6;
        }
        .dir-icon {
            color: var(--dim);
            display: flex;
            justify-content: flex-end;
        }
        /* scene */
        .scene-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 26px;
        }
        .scene-card {
            padding: 32px;
            background: rgba(255, 255, 255, .03);
            border: 1px solid var(--border-glass);
            border-radius: var(--radius-xl);
            transition: all .3s;
            position: relative;
            overflow: hidden;
        }
        .scene-card::after {
            content: "";
            position: absolute;
            right: -36px;
            top: -36px;
            width: 130px;
            height: 130px;
            border-radius: 50%;
            background: rgba(46, 124, 246, .08);
            filter: blur(20px);
        }
        .scene-card:hover {
            border-color: rgba(34, 211, 238, .25);
        }
        .scene-card h3 {
            font-size: 20px;
            margin-top: 14px;
        }
        .scene-card p {
            color: var(--dim);
            margin-top: 12px;
            line-height: 1.8;
        }
        .scene-list {
            margin-top: 20px;
            padding: 0;
            list-style: none;
        }
        .scene-list li {
            position: relative;
            padding-left: 22px;
            color: var(--body);
            font-size: 15px;
            margin-bottom: 10px;
        }
        .scene-list li::before {
            content: "";
            width: 8px;
            height: 8px;
            position: absolute;
            left: 0;
            top: 10px;
            background: var(--cyan);
            border-radius: 2px;
            transform: rotate(45deg);
            opacity: .8;
        }
        /* step */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-item {
            background: rgba(255, 255, 255, .035);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 20px;
            padding: 30px 24px;
            position: relative;
            transition: all .25s;
        }
        .step-item:hover {
            transform: translateY(-4px);
            border-color: rgba(34, 211, 238, .28);
            background: rgba(255, 255, 255, .055);
        }
        .step-num {
            font-family: ui-monospace, monospace;
            font-size: 34px;
            color: transparent;
            -webkit-text-stroke: 1px rgba(34, 211, 238, .5);
            font-weight: 800;
        }
        .step-item h3 {
            font-size: 17px;
            margin-top: 12px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--muted);
            margin-top: 8px;
            line-height: 1.7;
        }
        /* CTA */
        .cta-section {
            padding: 70px 0;
        }
        .cta-box {
            background-image: linear-gradient(rgba(15, 27, 43, .88), rgba(15, 27, 43, .78)), url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            border-radius: 28px;
            padding: 64px 56px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, .1);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: "";
            position: absolute;
            left: 10%;
            top: -70px;
            width: 300px;
            height: 240px;
            background: radial-gradient(circle, rgba(46, 124, 246, .2), transparent 60%);
            filter: blur(30px);
        }
        .cta-box h2 {
            font-size: 32px;
        }
        .cta-box p {
            max-width: 620px;
            margin: 16px auto 0;
            color: var(--dim);
        }
        .cta-box .btn-row {
            display: flex;
            justify-content: center;
            gap: 14px;
            margin-top: 30px;
            flex-wrap: wrap;
        }
        /* FAQ */
        .faq-wrap {
            max-width: 920px;
            margin: 0 auto;
        }
        .faq-item {
            background: rgba(255, 255, 255, .03);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 18px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color .25s;
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, .16);
        }
        .faq-item summary {
            padding: 22px 26px;
            font-size: 17px;
            color: #F1F5F9;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item .qv {
            position: relative;
            min-width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid rgba(34, 211, 238, .3);
            margin-left: 24px;
        }
        .faq-item .qv::before,
        .faq-item .qv::after {
            content: "";
            position: absolute;
            top: 50%;
            left: 50%;
            background: var(--cyan);
            transform: translate(-50%, -50%);
            border-radius: 2px;
            transition: all .25s;
        }
        .faq-item .qv::before {
            width: 12px;
            height: 1.5px;
        }
        .faq-item .qv::after {
            width: 1.5px;
            height: 12px;
        }
        .faq-item details[open] .qv::after {
            transform: translate(-50%, -50%) rotate(90deg);
            opacity: 0;
        }
        .faq-body {
            padding: 0 26px 24px;
            color: var(--dim);
            line-height: 1.8;
            font-size: 15px;
        }
        /* footer */
        footer {
            background: #050B14;
            border-top: 1px solid rgba(255, 255, 255, .08);
            color: var(--dim);
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 1fr .9fr 1.2fr;
            gap: 40px;
            padding: 64px 0 40px;
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
        }
        .footer-title {
            color: #E2E8F0;
            font-weight: 600;
            font-size: 15px;
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 14px;
            line-height: 1.6;
        }
        .footer-links a:hover {
            color: var(--cyan);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            padding: 18px 0 28px;
            border-top: 1px solid rgba(255, 255, 255, .08);
            font-size: 13px;
            color: var(--muted);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-bottom a:hover {
            color: var(--cyan);
        }
        .text-link {
            color: var(--cyan);
        }
        /* responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .scene-grid {
                grid-template-columns: 1fr;
            }
            .resource-card-h {
                grid-template-columns: 1fr;
            }
            .dir-row {
                grid-template-columns: 60px 1.1fr 1.8fr 40px;
            }
        }
        @media (max-width: 820px) {
            .topbar-right .topbar-link.hide-s,
            .nav-cta-desktop {
                display: none !important;
            }
            .nav-links {
                display: none;
            }
            .mobile-toggle {
                display: inline-flex;
            }
            .mobile-panel {
                display: block;
                position: fixed;
                inset: 0;
                z-index: 200;
                background: rgba(3, 8, 15, .86);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                padding: 100px 28px 40px;
                opacity: 0;
                pointer-events: none;
                transition: opacity .3s;
            }
            .mobile-panel.open {
                opacity: 1;
                pointer-events: auto;
            }
            .mobile-panel nav {
                display: flex;
                flex-direction: column;
                gap: 8px;
            }
            .mobile-panel nav a {
                font-size: 24px;
                color: #fff;
                padding: 14px 0;
                border-bottom: 1px solid rgba(255, 255, 255, .08);
                font-weight: 600;
            }
            .mobile-panel nav a.active {
                color: var(--cyan);
            }
            .mobile-menu-close {
                position: absolute;
                top: 24px;
                right: 24px;
                border: 1px solid rgba(255, 255, 255, .2);
                background: rgba(255, 255, 255, .06);
                color: #fff;
                width: 46px;
                height: 46px;
                border-radius: 12px;
                cursor: pointer;
                font-size: 24px;
                display: flex;
                align-items: center;
                justify-content: center;
            }
        }
        @media (max-width: 600px) {
            .container-custom {
                width: 90%;
            }
            .section-pad {
                padding: 64px 0;
            }
            .hero-section {
                padding: 48px 0 52px;
            }
            .section-title {
                font-size: 28px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .dir-row {
                grid-template-columns: 44px 1fr;
                padding: 20px 20px;
                row-gap: 6px;
            }
            .dir-icon {
                display: none;
            }
            .dir-desc {
                grid-column: 2;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
            }
            .resource-body h3 {
                font-size: 19px;
            }
            .anchor-list {
                flex-wrap: nowrap;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                padding-bottom: 6px;
            }
            .anchor-list::-webkit-scrollbar {
                display: none;
            }
            .cta-box {
                padding: 42px 22px;
                border-radius: 20px;
            }
            .faq-item summary {
                font-size: 15px;
                padding: 18px 20px;
            }
            .faq-body {
                padding: 0 20px 20px;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #070D16;
            --bg-deep: #0B1420;
            --bg-panel: #101D2B;
            --brand-blue: #2E7CF6;
            --brand-cyan: #22D3EE;
            --brand-sky: #0EA5E9;
            --brand-indigo: #6366F1;
            --text-white: #F8FAFC;
            --text-slate: #CBD5E1;
            --text-slate-2: #94A3B8;
            --text-sub: #64748B;
            --border-light: rgba(255, 255, 255, 0.08);
            --glass-bg: rgba(15, 23, 42, 0.58);
            --glass-bg-2: rgba(30, 41, 59, 0.36);
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 28px;
            --shadow-soft: 0 22px 60px rgba(0, 0, 0, 0.36);
            --max-width: 1280px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: linear-gradient(180deg, #070D16 0%, #0B1420 100%);
            color: var(--text-slate);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
        }

        body::before {
            content: "";
            position: fixed;
            inset: 0;
            z-index: -1;
            pointer-events: none;
            background:
                linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
            background-size: 42px 42px;
        }

        h1,
        h2,
        h3,
        h4,
        p,
        figure,
        ul,
        ol,
        dl,
        dd,
        blockquote {
            margin: 0;
            padding: 0;
        }

        ul,
        ol {
            list-style: none;
        }

        img {
            display: block;
            max-width: 100%;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s, background .25s, border-color .25s, box-shadow .25s, transform .25s;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
        }

        .skip-link {
            position: fixed;
            top: -120px;
            left: 16px;
            z-index: 999;
            padding: 10px 18px;
            background: var(--brand-cyan);
            color: #070D16;
            font-weight: 700;
            border-radius: 0 0 12px 12px;
            transition: top .25s;
        }

        .skip-link:focus {
            top: 0;
        }

        .container-custom {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .text-gradient {
            background: linear-gradient(120deg, #F8FAFC 15%, #7DD3FC 70%, #22D3EE);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .glass-card {
            background: var(--glass-bg);
            border: 1px solid var(--border-light);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-soft);
        }

        .status-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 999px;
            background: var(--brand-cyan);
            box-shadow: 0 0 12px rgba(34, 211, 238, .8);
            animation: pulse-green 2s ease-in-out infinite;
        }

        @keyframes pulse-green {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: .55;
                transform: scale(.8);
            }
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 13px;
            font-size: 12px;
            color: #94A3B8;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 999px;
            line-height: 1.4;
            transition: all .25s;
        }

        .tag:hover {
            color: #fff;
            border-color: rgba(34, 211, 238, .4);
            background: rgba(34, 211, 238, .08);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 46px;
            padding: 0 22px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            border-radius: 14px;
            border: none;
            cursor: pointer;
            transition: all .25s;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #2E7CF6, #0EA5E9);
            color: #fff;
            box-shadow: 0 8px 26px rgba(34, 211, 238, .16);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 36px rgba(34, 211, 238, .30);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 5px 16px rgba(34, 211, 238, .22);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(34, 211, 238, .45);
            outline-offset: 3px;
        }

        .btn-outline {
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .14);
            color: var(--text-slate);
        }

        .btn-outline:hover {
            color: #fff;
            background: rgba(255, 255, 255, .09);
            border-color: rgba(255, 255, 255, .28);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
        }

        .btn-outline:focus-visible {
            outline: 3px solid rgba(255, 255, 255, .2);
            outline-offset: 3px;
        }

        .btn-sm {
            height: 38px;
            padding: 0 16px;
            font-size: 14px;
            border-radius: 12px;
        }

        .topbar {
            background: rgba(2, 6, 12, .92);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            color: #94A3B8;
            font-size: 12px;
            height: 38px;
        }

        .topbar .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .topbar-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .topbar-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .topbar-actions span,
        .topbar-actions a {
            color: #94A3B8;
            transition: color .2s;
        }

        .topbar-actions a:hover {
            color: #fff;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(7, 13, 22, .68);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            transition: background .3s, box-shadow .3s;
        }

        .site-header.scrolled {
            background: rgba(7, 13, 22, .92);
            box-shadow: 0 14px 38px rgba(0, 0, 0, .38);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            min-height: 72px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 2px;
            font-size: 1.42rem;
            font-weight: 800;
            color: #F8FAFC;
            white-space: nowrap;
            letter-spacing: .01em;
        }

        .brand-logo span {
            color: #22D3EE;
            font-weight: 800;
            text-shadow: 0 0 18px rgba(34, 211, 238, .35);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
        }

        .nav-links a {
            position: relative;
            display: inline-flex;
            align-items: center;
            padding: 10px 15px;
            border-radius: 12px;
            font-size: 14.5px;
            font-weight: 500;
            color: #CBD5E1;
            transition: all .22s;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, .05);
        }

        .nav-links a.active::after {
            content: "";
            position: absolute;
            left: 15px;
            right: 15px;
            bottom: 2px;
            height: 2px;
            border-radius: 999px;
            background: linear-gradient(90deg, #22D3EE, #0EA5E9);
            box-shadow: 0 0 16px rgba(34, 211, 238, .75);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid rgba(255, 255, 255, .1);
            background: rgba(255, 255, 255, .04);
            border-radius: 12px;
            color: #fff;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        .menu-toggle:hover {
            border-color: rgba(34, 211, 238, .35);
        }

        .menu-toggle svg {
            width: 20px;
            height: 20px;
        }

        .mobile-drawer {
            position: fixed;
            inset: 0;
            z-index: 80;
            background: rgba(5, 10, 18, .97);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            display: none;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 12px;
            padding: 24px;
        }

        .mobile-drawer.open {
            display: flex;
        }

        .mobile-drawer .brand-logo {
            margin-bottom: 22px;
            font-size: 1.6rem;
        }

        .mobile-drawer a {
            width: 100%;
            text-align: center;
            padding: 14px 0;
            color: #E2E8F0;
            font-size: 20px;
            font-weight: 600;
            border-radius: 14px;
            transition: all .2s;
        }

        .mobile-drawer a:hover {
            color: #22D3EE;
            background: rgba(255, 255, 255, .05);
        }

        .mobile-drawer .btn {
            margin-top: 12px;
            width: 100%;
            max-width: 320px;
        }

        .article-hero {
            position: relative;
            padding: 82px 0 92px;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            overflow: hidden;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(7, 13, 22, .96) 0%, rgba(7, 13, 22, .82) 45%, rgba(7, 13, 22, .42) 100%);
        }

        .article-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 13, 22, .3) 0%, transparent 38%, transparent 68%, #070D16 100%);
            pointer-events: none;
        }

        .article-hero .container-custom {
            position: relative;
            z-index: 2;
        }

        .article-hero-inner {
            max-width: 980px;
            margin: 0 auto;
        }

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: #94A3B8;
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: #94A3B8;
        }

        .breadcrumb a:hover {
            color: #22D3EE;
        }

        .breadcrumb .sep {
            color: #475569;
        }

        .breadcrumb .current {
            color: #CBD5E1;
            max-width: 360px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-hero h1 {
            font-size: clamp(1.9rem, 4vw, 3rem);
            line-height: 1.28;
            color: #F8FAFC;
            font-weight: 800;
            max-width: 800px;
            letter-spacing: .01em;
            text-shadow: 0 6px 28px rgba(0, 0, 0, .35);
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            margin-top: 22px;
            padding-top: 18px;
            border-top: 1px solid rgba(255, 255, 255, .10);
            color: #CBD5E1;
            font-size: 14px;
            align-items: center;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .meta-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 999px;
            background: #22D3EE;
            box-shadow: 0 0 8px rgba(34, 211, 238, .65);
        }

        .article-main {
            margin-top: -56px;
            position: relative;
            z-index: 3;
        }

        .article-panel {
            max-width: 860px;
            margin: 0 auto;
            background: rgba(13, 23, 38, .78);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 26px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: 0 26px 70px rgba(0, 0, 0, .48);
            padding: 42px 52px 36px;
        }

        .entry-tip {
            display: flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(120deg, rgba(34, 211, 238, .09), rgba(14, 165, 233, .04));
            border: 1px solid rgba(34, 211, 238, .16);
            border-radius: 16px;
            padding: 14px 18px;
            font-size: 14px;
            color: #CBD5E1;
            margin-bottom: 28px;
            line-height: 1.6;
        }

        .entry-tip::before {
            content: "";
            display: block;
            width: 8px;
            height: 8px;
            border-radius: 999px;
            background: #22D3EE;
            box-shadow: 0 0 12px rgba(34, 211, 238, .8);
            flex-shrink: 0;
        }

        .article-content {
            font-size: 16px;
            color: #CBD5E1;
            word-break: break-word;
        }

        .article-content p {
            margin: 0 0 1.2em;
            line-height: 1.9;
        }

        .article-content h2 {
            font-size: 1.65rem;
            color: #F1F5F9;
            font-weight: 750;
            margin: 2.1em 0 .8em;
            padding-left: 14px;
            border-left: 3px solid #22D3EE;
            border-radius: 2px;
            line-height: 1.4;
        }

        .article-content h3 {
            color: #E2E8F0;
            margin: 1.8em 0 .7em;
            font-size: 1.28rem;
            font-weight: 700;
        }

        .article-content h4 {
            color: #E2E8F0;
            margin: 1.5em 0 .6em;
            font-size: 1.08rem;
            font-weight: 700;
        }

        .article-content a {
            color: #38BDF8;
            border-bottom: 1px solid rgba(56, 189, 248, .3);
        }

        .article-content a:hover {
            color: #22D3EE;
            border-bottom-color: #22D3EE;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.3em 1.4em;
            padding-left: 1.4em;
        }

        .article-content ul {
            list-style: disc;
        }

        .article-content ol {
            list-style: decimal;
        }

        .article-content li {
            margin-bottom: 8px;
            padding-left: 2px;
            line-height: 1.85;
        }

        .article-content ul li::marker {
            color: #22D3EE;
        }

        .article-content ol li::marker {
            color: #22D3EE;
            font-weight: 600;
        }

        .article-content blockquote {
            position: relative;
            margin: 1.6em 0;
            padding: 18px 22px;
            background: rgba(255, 255, 255, .035);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 16px;
            color: #94A3B8;
        }

        .article-content blockquote::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            border-radius: 4px;
            background: linear-gradient(#22D3EE, #2E7CF6);
        }

        .article-content blockquote p {
            margin: 0;
        }

        .article-content img {
            margin: 1.6em auto;
            border-radius: 18px;
            border: 1px solid rgba(255, 255, 255, .06);
            box-shadow: 0 16px 42px rgba(0, 0, 0, .28);
        }

        .article-content table {
            width: 100%;
            margin: 1.5em 0;
            border-collapse: separate;
            border-spacing: 0;
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 14px;
            overflow: hidden;
            font-size: 14px;
        }

        .article-content table th {
            background: rgba(255, 255, 255, .05);
            color: #F1F5F9;
            font-weight: 700;
            text-align: left;
            padding: 12px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .article-content table td {
            padding: 11px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, .05);
            color: #CBD5E1;
        }

        .article-content table tr:last-child td {
            border-bottom: none;
        }

        .article-content hr {
            border: none;
            height: 1px;
            background: rgba(255, 255, 255, .08);
            margin: 2em 0;
        }

        .article-content code {
            background: rgba(34, 211, 238, .08);
            color: #A5F3FC;
            padding: 3px 8px;
            border-radius: 8px;
            font-size: .92em;
        }

        .article-content pre {
            background: #0B1120;
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 16px;
            padding: 18px;
            overflow-x: auto;
        }

        .article-content pre code {
            background: transparent;
            color: #CBD5E1;
            padding: 0;
        }

        .empty-panel {
            max-width: 860px;
            margin: 0 auto;
            padding: 70px 36px;
            text-align: center;
            border-radius: 26px;
        }

        .empty-panel h2 {
            font-size: 1.8rem;
            color: #F8FAFC;
            margin-bottom: 14px;
        }

        .empty-panel p {
            color: #94A3B8;
            font-size: 16px;
            max-width: 420px;
            margin: 0 auto 28px;
        }

        .article-foot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 34px;
            padding-top: 26px;
            border-top: 1px solid rgba(255, 255, 255, .08);
        }

        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: #38BDF8;
            font-weight: 600;
            font-size: 15px;
            transition: all .2s;
        }

        .text-link:hover {
            color: #22D3EE;
            transform: translateX(-2px);
        }

        .related-section {
            padding: 96px 0 40px;
        }

        .related-uses {
            padding: 18px 0 24px;
        }

        .section-head {
            max-width: 860px;
            margin: 0 auto 38px;
        }

        .section-head .kicker {
            color: #22D3EE;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: .04em;
            margin-bottom: 6px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .section-head .kicker::before {
            content: "";
            width: 22px;
            height: 1px;
            background: #22D3EE;
            display: inline-block;
        }

        .section-head h2 {
            color: #F8FAFC;
            font-size: 2rem;
            font-weight: 780;
            line-height: 1.3;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .thumb-card {
            display: flex;
            flex-direction: column;
            border-radius: 22px;
            background: rgba(15, 23, 42, .72);
            border: 1px solid rgba(255, 255, 255, .07);
            overflow: hidden;
            transition: all .3s;
        }

        .thumb-card:hover {
            transform: translateY(-6px);
            border-color: rgba(34, 211, 238, .25);
            box-shadow: 0 16px 44px rgba(0, 0, 0, .38);
        }

        .thumb-card .card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

        .thumb-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s;
        }

        .thumb-card:hover .card-img img {
            transform: scale(1.04);
        }

        .thumb-card .card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 45%, rgba(7, 13, 22, .65) 100%);
        }

        .thumb-card .card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 12px;
        }

        .thumb-card h3 {
            color: #F1F5F9;
            font-size: 1.12rem;
            line-height: 1.5;
            font-weight: 700;
        }

        .thumb-card p {
            color: #94A3B8;
            font-size: 14px;
            line-height: 1.7;
        }

        .thumb-card .card-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #22D3EE;
            font-size: 14px;
            font-weight: 600;
            margin-top: auto;
        }

        .faq-section {
            padding: 84px 0 96px;
        }

        .faq-grid {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .faq-item {
            background: rgba(15, 23, 42, .72);
            border: 1px solid rgba(255, 255, 255, .07);
            border-radius: 20px;
            overflow: hidden;
            transition: all .3s;
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, .14);
        }

        .faq-item[open] {
            border-color: rgba(34, 211, 238, .18);
            background: rgba(16, 29, 43, .9);
        }

        .faq-item summary {
            position: relative;
            cursor: pointer;
            list-style: none;
            padding: 20px 22px;
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 16px;
            font-weight: 600;
            color: #E2E8F0;
            line-height: 1.5;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-icon {
            position: relative;
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            margin-left: auto;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            background: #22D3EE;
            border-radius: 4px;
            transition: transform .3s, opacity .3s;
        }

        .faq-icon::before {
            left: 0;
            right: 0;
            top: 50%;
            height: 2px;
            transform: translateY(-50%);
        }

        .faq-icon::after {
            top: 0;
            bottom: 0;
            left: 50%;
            width: 2px;
            transform: translateX(-50%);
        }

        .faq-item[open] .faq-icon::after {
            transform: translateX(-50%) rotate(90deg);
            opacity: 0;
        }

        .faq-item .faq-answer {
            padding: 0 22px 22px 22px;
            color: #94A3B8;
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-item .faq-answer a {
            color: #38BDF8;
        }

        .cta-band {
            position: relative;
            margin: 40px 0 0;
            padding: 100px 24px;
            text-align: center;
            background-size: cover;
            background-position: center;
            border-radius: 30px;
            border: 1px solid rgba(255, 255, 255, .08);
            overflow: hidden;
        }

        .cta-band::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(7, 13, 22, .94), rgba(15, 23, 42, .72), rgba(14, 165, 233, .16));
        }

        .cta-band .container-custom {
            position: relative;
            z-index: 2;
        }

        .cta-band h2 {
            color: #F8FAFC;
            font-size: clamp(1.6rem, 3vw, 2.6rem);
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-band p {
            color: #CBD5E1;
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 34px;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        footer {
            background: rgba(2, 6, 12, .96);
            border-top: 1px solid rgba(255, 255, 255, .06);
            margin-top: 70px;
            padding: 62px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.9fr 0.9fr 1fr;
            gap: 38px;
            margin-bottom: 44px;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            color: #F8FAFC;
            font-size: 1.3rem;
            font-weight: 800;
            gap: 2px;
        }

        .footer-brand .footer-logo span {
            color: #22D3EE;
        }

        .footer-title {
            color: #CBD5E1;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: .03em;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a,
        .footer-links p {
            color: #94A3B8;
            font-size: 14px;
            line-height: 1.6;
            margin: 0;
        }

        .footer-links a:hover {
            color: #22D3EE;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 13px;
            color: #64748B;
        }

        .footer-bottom .status-line {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        @media (max-width: 1024px) {
            .nav-links,
            .header-actions .btn-outline {
                display: none;
            }

            .header-actions .btn-primary {
                display: none;
            }

            .menu-toggle {
                display: inline-flex;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 34px;
            }

            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .article-hero h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            .topbar .topbar-actions {
                display: none;
            }

            .article-hero {
                padding: 60px 0 86px;
            }

            .article-hero h1 {
                font-size: 1.95rem;
            }

            .article-panel {
                padding: 26px 22px;
                margin: 0 14px;
            }

            .related-section {
                padding: 68px 0 24px;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

            .faq-section {
                padding: 60px 0 70px;
            }

            .cta-band {
                padding: 70px 18px;
                border-radius: 22px;
            }

            .section-head {
                margin-bottom: 26px;
            }

            .section-head h2 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .topbar {
                font-size: 11px;
            }

            .container-custom {
                padding-left: 18px;
                padding-right: 18px;
            }

            .brand-logo {
                font-size: 1.12rem;
            }

            .header-inner {
                min-height: 64px;
            }

            .article-hero {
                padding: 48px 0 76px;
            }

            .article-hero h1 {
                font-size: 1.6rem;
            }

            .hero-meta {
                gap: 10px 16px;
            }

            .article-panel {
                margin: 0 8px;
                padding: 22px 18px;
            }

            .entry-tip {
                font-size: 13px;
                padding: 12px 14px;
            }

            .article-content {
                font-size: 15px;
            }

            .article-content h2 {
                font-size: 1.36rem;
            }

            .article-foot {
                flex-direction: column;
                align-items: flex-start;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }

            .cta-buttons {
                flex-direction: column;
            }

            .cta-buttons .btn {
                width: 100%;
                max-width: 260px;
            }

            .footer-bottom {
                flex-direction: column;
                justify-content: center;
                text-align: center;
            }
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --bg-primary: #070D16;
            --bg-secondary: #0B1420;
            --bg-elevated: #101D2B;
            --brand-blue: #2E7CF6;
            --brand-blue-light: #3B82F6;
            --accent-cyan: #22D3EE;
            --accent-sky: #0EA5E9;
            --glow-purple: #6366F1;
            --glow-purple-light: #8B5CF6;
            --text-primary: #F8FAFC;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --text-dim: #64748B;
            --border-white: rgba(255, 255, 255, 0.08);
            --border-white-light: rgba(255, 255, 255, 0.13);
            --radius-card: 22px;
            --radius-btn: 12px;
            --radius-tag: 8px;
            --shadow-soft: 0 8px 30px rgba(0, 0, 0, 0.25);
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset ===== */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-secondary);
            line-height: 1.75;
            font-size: 16px;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-base);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
        }
        ul, ol {
            list-style: none;
        }
        h1, h2, h3, h4, h5 {
            color: var(--text-primary);
            line-height: 1.25;
        }

        /* ===== Utilities ===== */
        .container-custom {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .text-gradient {
            background: linear-gradient(135deg, #F8FAFC 30%, #93C5FD 70%, #22D3EE 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.04);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-white);
            border-radius: var(--radius-card);
        }
        .text-cyan-glow {
            color: var(--accent-cyan);
            text-shadow: 0 0 20px rgba(34, 211, 238, 0.35);
        }

        /* ===== Top Bar ===== */
        .top-bar {
            background: rgba(5, 10, 18, 0.92);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            height: 38px;
            font-size: 12px;
            color: var(--text-muted);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            position: relative;
            z-index: 60;
        }
        .top-bar .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .top-bar-left {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-dim);
            font-size: 12px;
        }
        .top-bar-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .top-bar-right a {
            color: var(--text-muted);
            font-size: 12px;
            transition: var(--transition-base);
        }
        .top-bar-right a:hover {
            color: var(--accent-cyan);
        }
        .top-sep {
            width: 1px;
            height: 12px;
            background: rgba(255, 255, 255, 0.15);
        }
        .status-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-cyan);
            box-shadow: 0 0 8px rgba(34, 211, 238, 0.6);
            vertical-align: middle;
        }
        
        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 55;
            background: rgba(7, 13, 22, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-white);
            transition: var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
        }
        .nav-container {
            height: 76px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-logo {
            display: flex;
            align-items: flex-start;
            line-height: 1.1;
        }
        .brand-main {
            font-size: 24px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.5px;
        }
        .brand-sub {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            padding: 2px 8px;
            border-radius: 6px;
            margin-left: 8px;
            transform: translateY(-3px);
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 10px 14px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition-base);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: #E2E8F0;
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-links a.active {
            color: #fff;
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 3px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--brand-blue), var(--accent-cyan));
            box-shadow: 0 0 12px rgba(34, 211, 238, 0.5);
        }
        .nav-cta {
            margin-left: 8px;
        }
        .btn-main {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 24px;
            background: linear-gradient(135deg, #2563EB, #06B6D4);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            border: none;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 2px 15px rgba(37, 99, 235, 0.25);
            white-space: nowrap;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .btn-main i {
            font-size: 14px;
            transition: transform 0.2s;
        }
        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(34, 211, 238, 0.35), 0 0 20px rgba(34, 211, 238, 0.15);
            border-color: rgba(34, 211, 238, 0.4);
            background: linear-gradient(135deg, #2470F5, #07BEE8);
        }
        .btn-main:hover i {
            transform: translateX(3px);
        }
        .btn-main:active {
            transform: translateY(-1px) scale(0.98);
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
        }
        .btn-main:focus-visible {
            outline: 3px solid rgba(34, 211, 238, 0.4);
            outline-offset: 2px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 15px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.18);
            cursor: pointer;
            transition: var(--transition-base);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            white-space: nowrap;
        }
        .btn-secondary i {
            color: var(--accent-cyan);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.32);
            transform: translateY(-2px);
        }
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(34, 211, 238, 0.35);
            outline-offset: 2px;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 8px;
        }
        .hamburger span {
            width: 20px;
            height: 2px;
            background: #E2E8F0;
            border-radius: 3px;
            transition: all 0.3s ease;
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mobile Menu Overlay */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(5, 10, 18, 0.98);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            z-index: 100;
            padding: 100px 40px;
            flex-direction: column;
            gap: 8px;
            opacity: 0;
            transition: opacity 0.3s ease;
            pointer-events: none;
        }
        .mobile-nav-overlay.show {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-nav-overlay a {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-secondary);
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition-base);
            text-align: center;
        }
        .mobile-nav-overlay a:hover,
        .mobile-nav-overlay a.active {
            color: #fff;
        }
        .mobile-nav-overlay a.active {
            color: var(--accent-cyan);
        }
        .mobile-cta {
            margin-top: 30px;
            display: flex;
            justify-content: center;
        }
        .top-bar-mobile {
            display: none;
            text-align: center;
            padding: 4px;
            font-size: 12px;
            color: var(--text-dim);
            background: rgba(5, 10, 18, 0.98);
            border-bottom: 1px solid var(--border-white);
        }

        /* ===== Hero Section ===== */
        .category-hero {
            position: relative;
            background-color: #070D16;
            background-image: linear-gradient(to right, rgba(7, 13, 22, 0.88) 0%, rgba(16, 29, 43, 0.84) 100%), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            padding: 80px 0 100px;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(99, 102, 241, 0.2), transparent 70%);
            pointer-events: none;
        }
        .hero-grid-pattern {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 32px 32px;
            pointer-events: none;
        }
        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 24px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .hero-breadcrumb a {
            color: var(--text-muted);
            transition: var(--transition-base);
        }
        .hero-breadcrumb a:hover {
            color: var(--accent-cyan);
        }
        .hero-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.25);
        }
        .category-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
            position: relative;
            z-index: 1;
        }
        .category-hero .hero-sub {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 540px;
            line-height: 1.8;
            margin-bottom: 32px;
            position: relative;
            z-index: 1;
        }
        .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .hero-stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero-stat-number {
            font-size: 26px;
            font-weight: 800;
            color: var(--text-primary);
            font-family: ui-monospace, SFMono-Regular, monospace;
        }
        .hero-stat-label {
            font-size: 13px;
            color: var(--text-dim);
            margin-top: 4px;
        }
        .hero-graphic-mobile {
            display: none;
        }
        .hero-right-card {
            position: absolute;
            right: 40px;
            top: 50%;
            transform: translateY(-50%);
            width: 340px;
            padding: 32px;
            border-radius: 20px;
            border: 1px solid rgba(34, 211, 238, 0.2);
            background: rgba(13, 22, 36, 0.8);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 40px rgba(14, 165, 233, 0.08);
        }
        .hero-right-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .hero-right-card ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .hero-card-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .hero-card-item i {
            margin-top: 5px;
            color: var(--accent-cyan);
            font-size: 13px;
        }

        /* ===== Section Styles ===== */
        .section-block {
            padding: 100px 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--bg-secondary);
        }
        .section-label {
            display: inline-block;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.22);
            color: var(--accent-cyan);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 30px;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
        }
        .section-title {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 50px;
        }

        /* ===== Activity Timeline / Feature Cards ===== */
        .grid-2-col {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .grid-3-col {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-feature-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .feature-card {
            background: rgba(15, 23, 42, 0.7);
            border: 1px solid var(--border-white);
            border-radius: var(--radius-card);
            padding: 28px;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.3), transparent);
            opacity: 0;
            transition: var(--transition-base);
        }
        .feature-card:hover {
            background: rgba(20, 30, 50, 0.85);
            border-color: var(--border-white-light);
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
        }
        .feature-card:hover::before {
            opacity: 1;
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(34, 211, 238, 0.1));
            border: 1px solid rgba(34, 211, 238, 0.15);
        }
        .feature-icon i {
            color: var(--accent-cyan);
            font-size: 20px;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #F1F5F9;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* ===== Steps Section ===== */
        .process-steps {
            display: flex;
            gap: 32px;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 60px;
            right: 60px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(34, 211, 238, 0.4), transparent);
        }
        .process-step {
            flex: 1;
            text-align: center;
            position: relative;
            background: rgba(15, 23, 42, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-card);
            padding: 32px 24px;
            transition: var(--transition-base);
        }
        .process-step:hover {
            background: rgba(20, 30, 50, 0.7);
            border-color: rgba(34, 211, 238, 0.25);
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            background: linear-gradient(135deg, #1E3A8A, #0EA5E9);
            color: #fff;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.3);
        }
        .process-step h3 {
            font-size: 18px;
            margin-bottom: 10px;
            font-weight: 700;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* ===== Showcase / Image Cards ===== */
        .media-card {
            background: rgba(15, 23, 42, 0.65);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-white);
            transition: var(--transition-base);
        }
        .media-card:hover {
            border-color: rgba(34, 211, 238, 0.3);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
            transform: translateY(-6px);
        }
        .media-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .media-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .media-card:hover .media-img-wrap img {
            transform: scale(1.05);
        }
        .media-img-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to top, rgba(7, 13, 22, 0.6) 0%, transparent 40%);
        }
        .media-icon-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(7, 13, 22, 0.7);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            padding: 4px 12px;
            border-radius: 20px;
            color: #E2E8F0;
            font-size: 12px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .media-content {
            padding: 24px;
        }
        .media-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-tag);
            background: rgba(99, 102, 241, 0.15);
            color: #A5B4FC;
            border: 1px solid rgba(99, 102, 241, 0.2);
            margin-bottom: 8px;
        }
        .media-title {
            font-size: 18px;
            font-weight: 700;
            color: #F1F5F9;
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .media-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .media-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-dim);
        }
        .media-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-cyan);
            transition: var(--transition-base);
        }
        .media-cta:hover {
            gap: 10px;
            color: #67E8F9;
        }

        /* ===== Notice / Announcement ===== */
        .announcement-table {
            width: 100%;
            border-collapse: collapse;
        }
        .announcement-table th {
            text-align: left;
            padding: 14px 12px;
            font-size: 13px;
            color: var(--text-muted);
            border-bottom: 1px solid var(--border-white);
        }
        .announcement-table td {
            padding: 17px 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            font-size: 15px;
            color: var(--text-secondary);
            transition: background-color 0.2s ease;
        }
        .announcement-table tr:hover td {
            background-color: rgba(255, 255, 255, 0.02);
        }
        .announcement-title-cell {
            font-weight: 500;
            color: #E2E8F0;
        }
        .announcement-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
        }
        .announcement-tag.hot {
            background: rgba(244, 63, 94, 0.12);
            color: #FB7185;
        }
        .announcement-tag.new {
            background: rgba(34, 211, 238, 0.1);
            color: #22D3EE;
        }
        .announcement-tag.off {
            background: rgba(100, 116, 139, 0.15);
            color: #94A3B8;
        }

        /* ===== Banner / CTA ===== */
        .cta-banner {
            background-image: linear-gradient(to right, rgba(30, 58, 138, 0.95), rgba(14, 165, 233, 0.8), rgba(34, 211, 238, 0.6)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 64px 0;
            border-radius: 24px;
            position: relative;
            overflow: hidden;
        }
        .cta-inner {
            text-align: center;
        }
        .cta-banner h2 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }
        .cta-banner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 30px;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-cta-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--radius-btn);
            color: #fff;
            font-weight: 700;
            transition: var(--transition-base);
        }
        .btn-cta-light:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
            border-color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Benefit / Value List ===== */
        .value-list-item {
            display: flex;
            gap: 22px;
            align-items: flex-start;
            margin-bottom: 28px;
        }
        .value-circle {
            width: 46px;
            height: 46px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(30, 58, 138, 0.3);
            border: 1px solid rgba(96, 165, 250, 0.2);
        }
        .value-circle i {
            color: #93C5FD;
            font-size: 18px;
        }
        .value-content h4 {
            font-size: 17px;
            color: #E2E8F0;
            margin-bottom: 6px;
            font-weight: 700;
        }
        .value-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== Flexible Panel ===== */
        .flex-panel {
            background: rgba(15, 23, 42, 0.55);
            border: 1px solid var(--border-white);
            border-radius: var(--radius-card);
            padding: 36px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        /* ===== Tags ===== */
        .tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-muted);
            margin-right: 8px;
            margin-bottom: 6px;
            transition: var(--transition-base);
            cursor: default;
        }
        .tag:hover {
            border-color: rgba(34, 211, 238, 0.35);
            color: #E2E8F0;
        }

        /* ===== System Status / Wall ===== */
        .status-strip {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border-white);
            border-radius: 16px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .status-item-group {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            align-items: center;
        }
        .status-chip {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .status-chip i {
            color: var(--accent-cyan);
            font-size: 12px;
        }

        /* ===== Tip / Warning Box ===== */
        .tip-box {
            background: rgba(34, 211, 238, 0.05);
            padding: 16px 22px;
            border-radius: 12px;
            border-left: 3px solid var(--accent-cyan);
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            max-width: 1000px;
        }

        /* ===== CTA Section ===== */
        .section-cta {
            background-color: var(--bg-secondary);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .section-cta::before {
            content: '';
            position: absolute;
            left: 40%;
            top: 0;
            width: 400px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(37, 99, 235, 0.15), transparent);
            pointer-events: none;
        }
        .cta-big-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-white-light);
            border-radius: 24px;
            padding: 56px;
            text-align: center;
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(16px);
        }
        .cta-big-card h2 {
            font-size: 38px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-big-card p {
            max-width: 600px;
            margin: 0 auto 30px;
            font-size: 16px;
            color: var(--text-muted);
        }
        .cta-btn-row {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ===== FAQ ===== */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-item {
            background: rgba(15, 23, 42, 0.6);
            border: 1px solid var(--border-white);
            border-radius: 16px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.14);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            padding: 24px 32px;
            font-size: 16px;
            font-weight: 600;
            color: #E2E8F0;
            transition: var(--transition-base);
            background-color: transparent;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
            font-family: inherit;
        }
        .faq-question:hover {
            color: #fff;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 15px;
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding-top 0.3s ease, padding-bottom 0.3s ease;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-top: 0;
            padding-top: 0px;
            padding-bottom: 24px;
            padding-left: 32px;
            padding-right: 32px;
        }

        /* ===== Footer (following homepage fragment) ===== */
        footer {
            background: #0A1018;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 72px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
        }
        .footer-brand .footer-logo {
            font-size: 24px;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
        }
        .footer-logo small {
            font-size: 12px;
            font-weight: 500;
            color: var(--text-muted);
            margin-left: 10px;
        }
        .footer-brand p {
            margin-top: 16px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 380px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #F1F5F9;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-links a,
        .footer-links p {
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition-base);
            line-height: 1.6;
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 28px;
            margin-top: 56px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            text-align: center;
            font-size: 13px;
            color: var(--text-dim);
        }
        .footer-bottom .flex {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* ===== Animation / Reveal ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-up {
            animation: fadeInUp 0.7s ease-out forwards;
        }
        .delay-1 {
            animation-delay: 0.1s;
            opacity: 0;
        }
        .delay-2 {
            animation-delay: 0.2s;
            opacity: 0;
        }
        .delay-3 {
            animation-delay: 0.3s;
            opacity: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-feature-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3-col {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-right-card {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 8px 10px;
                font-size: 14px;
            }
            .brand-main {
                font-size: 20px;
            }
        }
        @media (max-width: 768px) {
            .top-bar .container-custom {
                justify-content: center;
            }
            .top-bar-right,
            .top-bar .top-sep {
                display: none;
            }
            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none !important;
            }
            .hamburger {
                display: flex;
            }
            .category-hero {
                padding: 60px 0 70px;
            }
            .category-hero h1 {
                font-size: 30px;
                line-height: 1.3;
            }
            .category-hero .hero-sub {
                font-size: 15px;
            }
            .section-block {
                padding: 64px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .process-steps {
                flex-direction: column;
            }
            .process-steps::before {
                display: none;
            }
            .grid-2-col,
            .grid-3-col {
                grid-template-columns: 1fr;
            }
            .grid-feature-4 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                margin-top: 36px;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat-number {
                font-size: 20px;
            }
            .faq-question {
                padding: 20px;
            }
            .faq-item.open .faq-answer {
                padding-left: 20px;
                padding-right: 20px;
                padding-top: 0;
                padding-bottom: 20px;
            }
            .flex-panel {
                padding: 24px;
            }
            .cta-big-card {
                padding: 36px 24px;
            }
            .cta-big-card h2 {
                font-size: 28px;
            }
            .category-hero {
                background-size: cover;
            }
            .value-list-item {
                gap: 16px;
            }
            .value-circle {
                width: 38px;
                height: 38px;
            }
            .announcement-table th:nth-child(2),
            .announcement-table td:nth-child(2) {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .brand-main {
                font-size: 18px;
            }
            .brand-sub {
                font-size: 10px;
                padding: 2px 6px;
                margin-left: 4px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero .hero-sub {
                font-size: 15px;
            }
            .section-title {
                font-size: 24px;
            }
            .btn-main,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .footer-bottom {
                font-size: 12px;
            }
            .top-bar-left {
                font-size: 11px;
                justify-content: center;
            }
            .top-bar .container-custom {
                padding: 0 12px;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #070D16;
            --bg-elev: #0B1420;
            --bg-soft: #101D2B;
            --brand: #2E7CF6;
            --brand-light: #60A5FA;
            --cyan: #22D3EE;
            --sky: #0EA5E9;
            --indigo-glow: #6366F1;
            --purple-glow: #8B5CF6;
            --text-main: #F8FAFC;
            --text-body: #CBD5E1;
            --text-muted: #94A3B8;
            --text-faint: #64748B;
            --border-sub: rgba(255, 255, 255, 0.08);
            --glass-bg: rgba(255, 255, 255, 0.06);
            --card-bg: rgba(15, 23, 42, 0.72);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg-primary);
            color: var(--text-body);
            font-family: var(--font-sans);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        img {
            display: block;
            max-width: 100%;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font-family: inherit;
        }

        .container-custom {
            width: min(1200px, 92%);
            margin-inline: auto;
        }

        .section {
            padding: 96px 0;
        }

        .section-alt {
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.018), transparent 30%), var(--bg-elev);
            border-top: 1px solid var(--border-sub);
            border-bottom: 1px solid var(--border-sub);
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: 999px;
            border: 1px solid rgba(34, 211, 238, 0.3);
            background: rgba(34, 211, 238, 0.08);
            color: #A5F3FC;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .section-title {
            color: var(--text-main);
            font-size: clamp(28px, 4vw, 38px);
            font-weight: 800;
            line-height: 1.25;
            margin: 14px 0 14px;
            letter-spacing: -0.5px;
        }

        .section-sub {
            max-width: 680px;
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.8;
            margin: 0 auto;
        }

        .grad-text {
            background: linear-gradient(100deg, #FFFFFF 10%, #A5F3FC 55%, #60A5FA 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 999px;
            border: none;
            background: linear-gradient(120deg, #2E7CF6, #22D3EE);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            cursor: pointer;
            transition: all .25s ease;
            box-shadow: 0 8px 26px -12px rgba(46, 124, 246, 0.8);
            white-space: nowrap;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px -8px rgba(34, 211, 238, 0.55);
        }
        .btn-primary:active {
            transform: translateY(0);
            filter: brightness(.92);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(34, 211, 238, .55);
            outline-offset: 3px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .22);
            background: rgba(255, 255, 255, .04);
            color: #E2E8F0;
            font-weight: 500;
            font-size: 15px;
            line-height: 1.4;
            cursor: pointer;
            transition: all .25s ease;
            white-space: nowrap;
        }
        .btn-outline:hover {
            border-color: rgba(34, 211, 238, .55);
            background: rgba(34, 211, 238, .08);
            color: #F0FDFF;
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(0);
            filter: brightness(.85);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(34, 211, 238, .45);
            outline-offset: 2px;
        }

        /* 标签 */
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 7px 15px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.13);
            background: rgba(255, 255, 255, 0.045);
            color: var(--text-body);
            font-size: 13px;
            font-weight: 500;
            transition: all .2s ease;
            cursor: default;
        }
        .tag.clickable {
            cursor: pointer;
        }
        .tag.clickable:hover {
            color: #fff;
            border-color: rgba(34, 211, 238, .45);
            background: rgba(34, 211, 238, .1);
        }

        /* 状态点 */
        .status-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--cyan);
            box-shadow: 0 0 12px rgba(34, 211, 238, .6);
            animation: pulse 2s ease-in-out infinite;
        }
        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: .55; }
        }

        /* Header */
        .topbar {
            background: rgba(2, 6, 15, .95);
            border-bottom: 1px solid var(--border-sub);
            color: var(--text-faint);
        }
        .topbar .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 38px;
            gap: 16px;
        }
        .topbar-left,
        .topbar-links {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
        }
        .topbar-links a:hover {
            color: var(--cyan);
        }
        .topbar-sep {
            width: 1px;
            height: 13px;
            background: rgba(255, 255, 255, .15);
        }

        .mainbar {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 72px;
            background: rgba(7, 13, 22, .78);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-sub);
            transition: box-shadow .3s ease, background .3s ease;
        }
        .mainbar.scrolled {
            box-shadow: 0 12px 30px -18px rgba(0, 0, 0, .6);
            background: rgba(7, 13, 22, .9);
        }
        .nav-flex {
            height: 72px;
            display: flex;
            align-items: center;
            gap: 18px;
        }

        .logo {
            font-size: 23px;
            font-weight: 800;
            color: #fff;
            letter-spacing: .2px;
            white-space: nowrap;
            line-height: 1.2;
            display: inline-flex;
            align-items: baseline;
        }
        .logo .text-cyan-300 {
            font-size: 16px;
            margin: 0 1px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
        }
        .nav-links a {
            position: relative;
            padding: 10px 14px;
            border-radius: 12px;
            color: var(--text-body);
            font-size: 15px;
            font-weight: 500;
            transition: all .25s ease;
        }
        .nav-links a:hover {
            color: #f1f5f9;
            background: rgba(255, 255, 255, .05);
        }
        .nav-links a.active {
            color: #fff;
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 3px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, #22D3EE, #3B82F6);
            box-shadow: 0 0 12px rgba(34, 211, 238, .5);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }

        .burger {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: 1px solid var(--border-sub);
            background: rgba(255, 255, 255, .04);
            color: #fff;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all .2s ease;
        }
        .burger:hover {
            border-color: rgba(34, 211, 238, .35);
            background: rgba(34, 211, 238, .1);
        }
        .burger span {
            display: block;
            width: 17px;
            height: 2px;
            margin: 3px 0;
            background: currentColor;
            border-radius: 2px;
            transition: all .3s ease;
        }

        .mobile-menu {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 200;
            background: rgba(4, 8, 15, .92);
            backdrop-filter: blur(24px);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 20px;
            opacity: 0;
            visibility: hidden;
            transition: all .4s ease;
        }
        .mobile-menu.open {
            opacity: 1;
            visibility: visible;
        }
        .mobile-menu a.m-menu-link {
            font-size: 28px;
            font-weight: 700;
            color: #e2e8f0;
            padding: 6px 20px;
            border-radius: 14px;
        }
        .mobile-menu a.m-menu-link.active,
        .mobile-menu a.m-menu-link:hover {
            color: #fff;
            background: rgba(34, 211, 238, .12);
        }
        .mobile-menu-close {
            position: absolute;
            top: 22px;
            right: 22px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, .2);
            color: #fff;
            background: rgba(255, 255, 255, .05);
            font-size: 24px;
            line-height: 1;
            cursor: pointer;
        }

        /* 玻璃卡片 */
        .glass-card {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 22px;
            backdrop-filter: blur(18px);
            position: relative;
        }

        /* 分类页 Hero */
        .service-hero {
            position: relative;
            overflow: hidden;
            padding: 90px 0 96px;
            background:
                radial-gradient(55% 75% at 10% 15%, rgba(59, 130, 246, .22), transparent 60%),
                radial-gradient(40% 60% at 85% 20%, rgba(34, 211, 238, .12), transparent 60%),
                radial-gradient(30% 45% at 70% 85%, rgba(139, 92, 246, .12), transparent 70%),
                linear-gradient(160deg, rgba(7, 13, 22, .88), rgba(11, 20, 32, .55)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border-sub);
        }
        .service-hero h1 {
            color: #fff;
            font-size: clamp(34px, 5vw, 52px);
            line-height: 1.2;
            font-weight: 800;
            letter-spacing: -1px;
            margin: 18px 0 22px;
        }
        .service-hero h1 .grad-hero {
            background: linear-gradient(100deg, #FFFFFF 10%, #7DD3FC 60%, #22D3EE 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .hero-lead {
            color: var(--text-body);
            font-size: 17px;
            line-height: 1.9;
            max-width: 560px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #cffafe;
            border: 1px solid rgba(34, 211, 238, .25);
            background: rgba(34, 211, 238, .08);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
        }
        .service-status-panel {
            padding: 22px 24px;
        }
        .service-status-panel .status-list {
            margin: 16px 0 0;
            padding: 0;
            list-style: none;
        }
        .service-status-panel .status-list li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 9px 0;
            border-bottom: 1px dashed rgba(255, 255, 255, .08);
            color: var(--text-muted);
            font-size: 14px;
        }
        .service-status-panel .status-list li:last-child {
            border-bottom: none;
        }
        .service-status-panel .status-list strong {
            color: #E2E8F0;
            font-weight: 600;
            font-size: 14px;
            text-align: right;
        }

        /* 搜索 */
        .search-wrap {
            max-width: 720px;
            margin: 34px auto 0;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 8px 8px 20px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .13);
            background: rgba(15, 23, 42, .7);
            box-shadow: 0 20px 50px -30px rgba(0, 0, 0, .7);
            transition: all .3s ease;
        }
        .search-wrap:focus-within {
            border-color: rgba(34, 211, 238, .5);
            box-shadow: 0 0 0 4px rgba(34, 211, 238, .08);
        }
        .search-wrap input {
            flex: 1;
            min-width: 0;
            background: transparent;
            border: none;
            outline: none;
            color: #E2E8F0;
            font-size: 16px;
        }
        .search-wrap input::placeholder {
            color: #64748B;
        }

        /* 支持通道 */
        .channel-card {
            position: relative;
            height: 100%;
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 22px;
            padding: 30px 24px 24px;
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
        }
        .channel-card:hover {
            border-color: rgba(34, 211, 238, .38);
            background: rgba(17, 24, 39, .82);
            transform: translateY(-4px);
            box-shadow: 0 24px 50px -28px rgba(34, 211, 238, .35);
        }
        .channel-card .channel-icon {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(59, 130, 246, .18), rgba(34, 211, 238, .14));
            border: 1px solid rgba(34, 211, 238, .25);
            color: #67E8F9;
            margin-bottom: 20px;
        }
        .channel-card h3 {
            color: #F1F5F9;
            font-size: 19px;
            font-weight: 700;
            margin: 0 0 10px;
        }
        .channel-card p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            flex: 1;
            margin: 0 0 18px;
        }
        .channel-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: #7DD3FC;
            font-weight: 600;
            font-size: 15px;
            transition: all .25s;
        }
        .channel-link:hover {
            color: #fff;
            gap: 10px;
        }
        .channel-link:focus-visible {
            outline: 2px solid rgba(34, 211, 238, .5);
            border-radius: 6px;
        }

        /* 流程 */
        .flow-step {
            position: relative;
            padding: 26px 22px;
            background: rgba(15, 23, 42, .7);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 20px;
            transition: all .3s;
        }
        .flow-step:hover {
            border-color: rgba(34, 211, 238, .3);
            background: rgba(17, 24, 39, .85);
        }
        .flow-step .step-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, #3B82F6, #22D3EE);
            color: #fff;
            font-weight: 800;
            box-shadow: 0 8px 22px -8px rgba(34, 211, 238, .4);
            margin-bottom: 18px;
        }
        .flow-step h3 {
            color: #F8FAFC;
            font-size: 18px;
            margin: 0 0 10px;
        }
        .flow-step p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            margin: 0;
        }

        .doc-card {
            border-radius: 24px;
            overflow: hidden;
            background: rgba(15, 23, 42, .8);
            border: 1px solid rgba(255, 255, 255, .1);
            box-shadow: 0 30px 60px -38px rgba(0, 0, 0, .6);
        }
        .doc-card img {
            width: 100%;
            min-height: 220px;
            object-fit: cover;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .doc-card-body {
            padding: 22px;
        }
        .doc-card-body h3 {
            color: #fff;
            font-size: 19px;
            margin: 0 0 8px;
        }
        .doc-card-body p {
            color: var(--text-muted);
            font-size: 14px;
            margin: 0;
        }

        /* FAQ */
        .faq-item {
            background: rgba(15, 23, 42, .65);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 18px;
            overflow: hidden;
            transition: border-color .3s, background .3s, box-shadow .3s;
            margin-bottom: 14px;
        }
        .faq-item.open {
            border-color: rgba(34, 211, 238, .35);
            background: rgba(17, 24, 39, .82);
            box-shadow: 0 18px 40px -30px rgba(34, 211, 238, .25);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            padding: 20px 22px;
            background: none;
            border: none;
            color: #E2E8F0;
            font-size: 16px;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            transition: color .2s;
        }
        .faq-question:hover {
            color: #fff;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            position: relative;
            border-radius: 50%;
            border: 1px solid rgba(34, 211, 238, .4);
            color: #22D3EE;
            transition: transform .35s ease;
        }
        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            background: currentColor;
            border-radius: 2px;
        }
        .faq-icon::before {
            width: 12px;
            height: 2px;
        }
        .faq-icon::after {
            width: 2px;
            height: 12px;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(34, 211, 238, .12);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.9;
            padding: 0 22px;
            transition: max-height .5s ease, padding .35s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 700px;
            padding-bottom: 22px;
        }
        .faq-empty {
            display: none;
            margin-top: 14px;
            border: 1px dashed rgba(255, 255, 255, .2);
            border-radius: 18px;
            padding: 24px;
            color: var(--text-muted);
            text-align: center;
        }
        .faq-empty[hidden] {
            display: none;
        }
        .faq-empty:not([hidden]) {
            display: block;
        }

        /* CTA区 */
        .cta-panel {
            border-radius: 28px;
            position: relative;
            overflow: hidden;
            background:
                radial-gradient(50% 100% at 90% 20%, rgba(139, 92, 246, .18), transparent 50%),
                radial-gradient(45% 75% at 5% 20%, rgba(59, 130, 246, .22), transparent 50%),
                url('/assets/images/backpic/back-2.webp') center/cover no-repeat,
                linear-gradient(135deg, rgba(11, 20, 32, .82), rgba(7, 13, 22, .45));
            border: 1px solid rgba(255, 255, 255, .11);
            padding: 60px 44px;
        }
        .cta-panel h2 {
            color: #fff;
            font-size: clamp(26px, 4vw, 38px);
            line-height: 1.3;
            font-weight: 800;
            margin: 0 0 18px;
        }
        .cta-panel p {
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.85;
            max-width: 560px;
            margin: 0;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        /* Footer */
        footer {
            background: #040B13;
            border-top: 1px solid var(--border-sub);
            padding: 72px 0 0;
            margin-top: 96px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 44px;
            padding-bottom: 54px;
        }
        .footer-logo {
            font-size: 22px;
            color: #fff;
            font-weight: 800;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.9;
            max-width: 340px;
        }
        .footer-title {
            font-size: 15px;
            color: #fff;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 9px;
            color: var(--text-muted);
            font-size: 14px;
        }
        .footer-links a {
            transition: color .2s ease, transform .2s ease;
        }
        .footer-links a:hover {
            color: #7DD3FC;
            transform: translateX(3px);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-sub);
            padding: 22px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            color: var(--text-faint);
            font-size: 13px;
        }

        /* 响应式 */
        @media (max-width: 992px) {
            .nav-links,
            .nav-cta .btn-outline {
                display: none;
            }
            .burger {
                display: inline-flex;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }
            .topbar-links,
            .topbar-sep {
                display: none;
            }
            .logo {
                font-size: 19px;
            }
            .service-hero {
                padding: 56px 0 68px;
            }
            .section-title {
                font-size: 26px;
            }
            .search-wrap {
                border-radius: 24px;
                flex-direction: column;
                align-items: stretch;
            }
            .search-wrap .btn-primary {
                justify-content: center;
                border-radius: 14px;
            }
            .cta-panel {
                padding: 36px 24px;
            }
            .cta-actions .btn-primary,
            .cta-actions .btn-outline {
                width: 100%;
                justify-content: center;
            }
        }

        @media (max-width: 560px) {
            .topbar-left {
                width: 100%;
                justify-content: space-between;
            }
            .nav-flex {
                gap: 10px;
            }
            .logo {
                font-size: 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom {
                justify-content: center;
                text-align: center;
            }
            .service-hero h1 {
                font-size: 30px;
            }
        }

/* roulang page: category3 */
:root {
            --bg: #070D16;
            --bg-soft: #0B1420;
            --bg-card: #0F172A;
            --brand: #2E7CF6;
            --brand-deep: #0EA5E9;
            --cyan: #22D3EE;
            --violet: #8B5CF6;
            --text: #F8FAFC;
            --muted: #CBD5E1;
            --sub: #94A3B8;
            --weak: #64748B;
            --line: rgba(255, 255, 255, 0.08);
            --glass: rgba(13, 23, 38, 0.78);
            --radius-xl: 28px;
            --radius-lg: 20px;
            --radius-sm: 10px;
            --shadow-soft: 0 24px 60px -32px rgba(0, 0, 0, 0.9);
            --shadow-glow: 0 18px 44px -20px rgba(34, 211, 238, 0.5);
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg);
            color: var(--muted);
            line-height: 1.75;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        body.menu-open {
            overflow: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
        }

        img {
            display: block;
            max-width: 100%;
        }

        ul,
        ol {
            list-style: none;
        }

        button {
            border: none;
            background: transparent;
            font-family: inherit;
            cursor: pointer;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(34, 211, 238, 0.7);
            outline-offset: 3px;
            border-radius: 8px;
        }

        .container-custom {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            display: inline-block;
            border-radius: 50%;
            background: var(--cyan);
            box-shadow: 0 0 10px rgba(34, 211, 238, 0.8);
            animation: statusPulse 2s ease-in-out infinite;
            flex-shrink: 0;
        }

        @keyframes statusPulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.55;
                transform: scale(0.78);
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 200;
        }

        .topbar {
            background: rgba(2, 6, 13, 0.92);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .topbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 38px;
            gap: 16px;
        }

        .topbar-left {
            display: flex;
            align-items: center;
            gap: 10px;
            min-width: 0;
            font-size: 12px;
            color: var(--weak);
            white-space: nowrap;
            overflow: hidden;
        }

        .topbar-tagline {
            color: var(--sub);
        }

        .topbar-right {
            display: flex;
            align-items: center;
            gap: 15px;
            font-size: 12px;
            color: var(--sub);
            flex-shrink: 0;
        }

        .topbar-right a {
            color: var(--muted);
        }

        .topbar-right a:hover {
            color: #fff;
        }

        .topbar-sep {
            width: 1px;
            height: 13px;
            background: rgba(255, 255, 255, 0.14);
            display: inline-block;
            flex-shrink: 0;
        }

        .navbar {
            background: rgba(7, 13, 22, 0.84);
            border-bottom: 1px solid var(--line);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.is-scrolled .navbar {
            background: rgba(4, 9, 18, 0.96);
            box-shadow: 0 16px 42px -22px rgba(0, 0, 0, 0.8);
        }

        .navbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            font-size: clamp(19px, 2vw, 23px);
            font-weight: 900;
            color: #fff;
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin: 0 4px;
            padding: 3px 6px;
            border-radius: 7px;
            font-size: 11px;
            font-weight: 900;
            color: #06131d;
            background: linear-gradient(135deg, #67e8f9, #38bdf8 55%, #3b82f6);
            letter-spacing: 0;
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.28);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-links li {
            margin: 0;
        }

        .nav-links a {
            position: relative;
            display: block;
            padding: 10px 15px;
            font-size: 14px;
            font-weight: 500;
            color: var(--muted);
            border-radius: 999px;
        }

        .nav-links a::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 70%;
            bottom: 3px;
            height: 3px;
            border-radius: 999px;
            background: linear-gradient(90deg, var(--cyan), var(--brand));
            opacity: 0;
            transition: right 0.3s ease, opacity 0.3s ease;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-links a:hover::after {
            right: 16px;
            opacity: 0.5;
        }

        .nav-links a.active {
            color: #fff;
        }

        .nav-links a.active::after {
            right: 16px;
            opacity: 1;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.09);
            position: relative;
            z-index: 210;
        }

        .nav-toggle span {
            display: block;
            width: 21px;
            height: 2px;
            background: #e2e8f0;
            border-radius: 99px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .nav-toggle.is-open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.is-open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.is-open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 9px;
            padding: 13px 24px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 14px;
            line-height: 1;
            border: 1px solid transparent;
            transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
        }

        .btn:active {
            transform: translateY(1px);
        }

        .btn-primary {
            color: #fff;
            background: linear-gradient(135deg, #2563eb 0%, #0ea5e9 55%, #22d3ee 120%);
            box-shadow: 0 8px 24px -14px rgba(14, 165, 233, 0.8);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 16px 34px -12px rgba(34, 211, 238, 0.55);
        }

        .btn-primary:active {
            box-shadow: 0 6px 16px -12px rgba(34, 211, 238, 0.5);
        }

        .btn-ghost {
            color: #e2e8f0;
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.16);
            backdrop-filter: blur(8px);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(103, 232, 249, 0.55);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 10px 18px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 16px 30px;
            font-size: 15px;
        }

        .cat-hero {
            position: relative;
            padding: 116px 0 108px;
            overflow: hidden;
            background: #070D16;
        }

        .cat-hero-bg {
            position: absolute;
            inset: 0;
            opacity: 0.5;
            background:
                radial-gradient(circle at 78% 18%, rgba(139, 92, 246, 0.25), transparent 34%),
                radial-gradient(circle at 16% 85%, rgba(34, 211, 238, 0.14), transparent 28%),
                url('/assets/images/backpic/back-1.png') center / cover no-repeat;
        }

        .cat-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            pointer-events: none;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
            background-size: 72px 72px;
            z-index: 1;
        }

        .cat-hero .container-custom {
            position: relative;
            z-index: 3;
        }

        .cat-hero-grid {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 382px;
            gap: 56px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 8px 16px;
            border-radius: 999px;
            background: rgba(15, 23, 42, 0.56);
            border: 1px solid rgba(103, 232, 249, 0.2);
            color: #a5f3fc;
            font-size: 13px;
            letter-spacing: 0.02em;
        }

        .hero-badge .status-dot {
            width: 6px;
            height: 6px;
        }

        .hero-title {
            margin: 26px 0 20px;
            font-size: clamp(34px, 5vw, 60px);
            line-height: 1.14;
            font-weight: 900;
            color: #f8fafc;
            letter-spacing: 0.01em;
        }

        .gradient-text {
            display: inline-block;
            background: linear-gradient(100deg, #f8fafc 0%, #7dd3fc 50%, #22d3ee 100%);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero-sub {
            max-width: 640px;
            font-size: 16px;
            line-height: 1.9;
            color: #b6c3cf;
            margin-bottom: 34px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 30px;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #8496a8;
        }

        .hero-tags span {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .hero-tags span::before {
            content: "";
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: #38bdf8;
        }

        .hero-panel {
            position: relative;
            padding: 30px;
            border-radius: 28px;
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.025));
            border: 1px solid rgba(255, 255, 255, 0.12);
            box-shadow: var(--shadow-soft);
            overflow: hidden;
            backdrop-filter: blur(14px);
        }

        .hero-panel::before {
            content: "";
            position: absolute;
            width: 240px;
            height: 240px;
            right: -90px;
            top: -90px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.24), transparent 70%);
        }

        .hero-panel > * {
            position: relative;
        }

        .panel-kicker {
            font-size: 12px;
            letter-spacing: 0.12em;
            color: #67e8f9;
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            text-transform: uppercase;
        }

        .hero-panel h3 {
            margin-top: 10px;
            font-size: 21px;
            line-height: 1.4;
            color: #eef6ff;
        }

        .hero-panel p {
            margin-top: 14px;
            font-size: 14px;
            line-height: 1.8;
            color: #9fb0c0;
        }

        .panel-divider {
            height: 1px;
            margin: 22px 0;
            background: rgba(255, 255, 255, 0.08);
        }

        .panel-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 16px;
            font-size: 13px;
            color: #cbd5e1;
        }

        .panel-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .strip-zone {
            position: relative;
            z-index: 5;
            margin-top: -34px;
        }

        .info-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            background: rgba(12, 23, 37, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            box-shadow: 0 24px 60px -40px rgba(0, 0, 0, 0.9);
            backdrop-filter: blur(12px);
            overflow: hidden;
        }

        .info-strip li {
            padding: 24px 22px;
            min-width: 0;
        }

        .info-strip li + li {
            border-left: 1px solid rgba(255, 255, 255, 0.07);
        }

        .strip-key {
            display: block;
            font-size: 12px;
            color: var(--weak);
            letter-spacing: 0.04em;
        }

        .info-strip strong {
            display: block;
            margin-top: 6px;
            font-size: 15px;
            font-weight: 700;
            color: #e7edf3;
            line-height: 1.5;
        }

        .section-pad {
            padding: 104px 0;
        }

        .section-alt {
            background: rgba(10, 18, 31, 0.42);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .section-head {
            max-width: 920px;
            margin-bottom: 52px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .eyebrow {
            display: inline-block;
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.14em;
            text-transform: uppercase;
            color: #67e8f9;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: clamp(26px, 4vw, 40px);
            line-height: 1.25;
            color: #f8fafc;
            font-weight: 800;
            letter-spacing: -0.01em;
        }

        .section-sub {
            margin-top: 14px;
            font-size: 16px;
            line-height: 1.85;
            color: #94a3b8;
            max-width: 780px;
        }

        .feature-card {
            display: grid;
            grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
            background: rgba(13, 23, 38, 0.82);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: 30px;
            overflow: hidden;
            box-shadow: var(--shadow-soft);
        }

        .feature-card-copy {
            padding: 46px;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            justify-content: center;
            gap: 18px;
        }

        .feature-card-copy h3 {
            font-size: clamp(22px, 3vw, 30px);
            line-height: 1.4;
            color: #f5f8fb;
            font-weight: 750;
        }

        .feature-card-copy > p {
            font-size: 15px;
            line-height: 1.9;
            color: #aab8c6;
        }

        .feature-card-img {
            position: relative;
            min-height: 340px;
            overflow: hidden;
            background: #0f1a28;
        }

        .feature-card-img img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .feature-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(9, 18, 31, 0.35), transparent 55%);
        }

        .feature-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 13px 20px;
            margin: 4px 0 6px;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: #c7d2de;
        }

        .feature-list li svg {
            flex: 0 0 auto;
            margin-top: 5px;
            color: #22d3ee;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 13px;
            border-radius: 999px;
            background: rgba(34, 211, 238, 0.09);
            border: 1px solid rgba(34, 211, 238, 0.18);
            color: #a5f3fc;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.02em;
            cursor: pointer;
            transition: background 0.2s ease, border-color 0.2s ease;
        }

        .tag:hover {
            background: rgba(34, 211, 238, 0.16);
            border-color: rgba(34, 211, 238, 0.4);
        }

        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            color: #67e8f9;
            border-bottom: 1px solid transparent;
            transition: border-color 0.2s ease, gap 0.2s ease, opacity 0.2s ease;
        }

        .text-link:hover {
            gap: 12px;
            border-bottom-color: rgba(103, 232, 249, 0.45);
            color: #a5f3fc;
        }

        .channel-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 330px;
            gap: 32px;
            align-items: start;
        }

        .channel-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .channel-item {
            display: grid;
            grid-template-columns: 58px 1fr;
            gap: 22px;
            padding: 24px;
            border-radius: 22px;
            background: rgba(15, 23, 42, 0.72);
            border: 1px solid rgba(255, 255, 255, 0.07);
            transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
        }

        .channel-item:hover {
            transform: translateY(-3px);
            border-color: rgba(34, 211, 238, 0.42);
            background: rgba(17, 29, 48, 0.9);
        }

        .channel-num {
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 17px;
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            font-size: 18px;
            font-weight: 800;
            color: #e0f7ff;
            background: linear-gradient(140deg, rgba(37, 99, 235, 0.34), rgba(34, 211, 238, 0.18));
            border: 1px solid rgba(103, 232, 249, 0.2);
        }

        .channel-item h3 {
            font-size: 18px;
            color: #eaf1f7;
            margin-bottom: 8px;
            font-weight: 700;
        }

        .channel-item p {
            font-size: 14px;
            line-height: 1.85;
            color: #8fa1b3;
        }

        .side-sticky {
            position: sticky;
            top: 130px;
            display: flex;
            flex-direction: column;
            gap: 22px;
        }

        .side-card {
            padding: 26px;
            border-radius: 24px;
            background: linear-gradient(150deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
        }

        .side-title {
            font-size: 17px;
            color: #f1f5f9;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .side-links {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .side-links a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            padding: 11px 4px;
            font-size: 14px;
            color: #b4c2d0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .side-links a:last-child {
            border-bottom: 0;
        }

        .side-links a:hover {
            color: #67e8f9;
        }

        .side-links a::after {
            content: "→";
            color: #38bdf8;
            font-size: 13px;
            opacity: 0;
            transform: translateX(-5px);
            transition: transform 0.2s ease, opacity 0.2s ease;
        }

        .side-links a:hover::after {
            opacity: 1;
            transform: translateX(0);
        }

        .steps-wrap {
            padding: 96px 0;
            background: linear-gradient(180deg, transparent, rgba(8, 18, 32, 0.72), transparent);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .step-card {
            position: relative;
            padding: 30px 26px;
            border-radius: 22px;
            background: rgba(13, 23, 38, 0.78);
            border: 1px solid rgba(255, 255, 255, 0.08);
            overflow: hidden;
            transition: transform 0.25s ease, border-color 0.25s ease;
        }

        .step-card:hover {
            transform: translateY(-4px);
            border-color: rgba(34, 211, 238, 0.4);
        }

        .step-card::before {
            content: "";
            position: absolute;
            width: 100px;
            height: 100px;
            right: -32px;
            top: -32px;
            background: radial-gradient(circle, rgba(46, 124, 246, 0.2), transparent 70%);
            border-radius: 50%;
        }

        .step-card > * {
            position: relative;
        }

        .step-no {
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            font-size: 13px;
            font-weight: 700;
            color: #22d3ee;
            letter-spacing: 0.08em;
        }

        .step-card h3 {
            font-size: 17px;
            color: #f0f5fa;
            margin: 14px 0 9px;
        }

        .step-card p {
            font-size: 14px;
            color: #8fa1b3;
            line-height: 1.8;
        }

        .faq-wrap {
            max-width: 940px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: rgba(12, 23, 38, 0.82);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        .faq-item.open {
            border-color: rgba(103, 232, 249, 0.35);
            background: rgba(15, 30, 49, 0.94);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 22px 26px;
            text-align: left;
            font-size: 16px;
            font-weight: 650;
            color: #eef6ff;
            line-height: 1.5;
        }

        .faq-arrow {
            position: relative;
            flex: 0 0 28px;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.18);
            transition: border-color 0.25s ease, background 0.25s ease;
        }

        .faq-arrow::before,
        .faq-arrow::after {
            content: "";
            position: absolute;
            top: 50%;
            left: 50%;
            width: 11px;
            height: 1.7px;
            background: #67e8f9;
            border-radius: 99px;
            transform: translate(-50%, -50%);
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .faq-arrow::after {
            transform: translate(-50%, -50%) rotate(90deg);
        }

        .faq-item.open .faq-arrow {
            background: rgba(34, 211, 238, 0.1);
            border-color: rgba(103, 232, 249, 0.5);
        }

        .faq-item.open .faq-arrow::after {
            transform: translate(-50%, -50%) rotate(0deg);
            opacity: 0;
        }

        .faq-answer {
            display: grid;
            grid-template-rows: 0fr;
            transition: grid-template-rows 0.34s ease;
        }

        .faq-item.open .faq-answer {
            grid-template-rows: 1fr;
        }

        .faq-answer-inner {
            overflow: hidden;
        }

        .faq-answer-inner p {
            padding: 0 26px 24px;
            font-size: 14px;
            line-height: 1.9;
            color: #9fb0c0;
        }

        .cta-section {
            position: relative;
            padding: 108px 0;
            overflow: hidden;
        }

        .cta-bg {
            position: absolute;
            inset: 0;
            background:
                linear-gradient(120deg, rgba(7, 13, 22, 0.88), rgba(10, 22, 40, 0.7), rgba(7, 13, 22, 0.88)),
                radial-gradient(circle at 75% 30%, rgba(139, 92, 246, 0.2), transparent 40%),
                url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
        }

        .cta-inner {
            position: relative;
            max-width: 1020px;
            margin: 0 auto;
            padding: 58px 48px;
            text-align: center;
            background: rgba(7, 14, 26, 0.62);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 34px;
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-soft);
        }

        .cta-inner h2 {
            font-size: clamp(26px, 4vw, 39px);
            color: #f8fafc;
            font-weight: 850;
            line-height: 1.3;
        }

        .cta-inner > p {
            max-width: 680px;
            margin: 16px auto 32px;
            color: #aab8c6;
            font-size: 15px;
            line-height: 1.9;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .cta-note {
            margin-top: 22px;
            font-size: 12px;
            color: #64748b;
        }

        footer {
            background: #04090F;
            padding: 90px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.35fr 1fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 52px;
        }

        .footer-logo {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            font-size: clamp(18px, 2vw, 21px);
            font-weight: 900;
            color: #fff;
            line-height: 1.4;
        }

        .footer-logo span {
            color: #67e8f9;
            margin: 0 4px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.9;
            color: #8fa1b3;
        }

        .footer-title {
            font-size: 16px;
            color: #e2e8f0;
            font-weight: 700;
            margin-bottom: 17px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 3px;
        }

        .footer-links a {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: #8fa1b3;
            line-height: 1.6;
        }

        .footer-links a:hover {
            color: #e2f8ff;
        }

        .footer-links p {
            padding: 6px 0;
            font-size: 14px;
            color: #8fa1b3;
            line-height: 1.7;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 13px;
            color: #64748b;
        }

        .footer-bottom span {
            display: inline-flex;
            align-items: center;
        }

        .footer-bottom .status-dot {
            width: 7px;
            height: 7px;
            margin-right: 7px;
        }

        @media (max-width: 1120px) {
            .navbar-inner {
                gap: 14px;
            }

            .nav-links a {
                padding: 9px 10px;
                font-size: 13px;
            }

            .brand {
                font-size: 19px;
            }

            .info-strip strong {
                font-size: 13px;
            }
        }

        @media (max-width: 1023px) {
            .cat-hero-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .hero-panel {
                display: none;
            }

            .cat-hero {
                padding: 88px 0 92px;
            }

            .info-strip {
                grid-template-columns: 1fr 1fr;
            }

            .info-strip li:nth-child(2n+1) {
                border-left: 0;
            }

            .info-strip li:nth-child(2n) {
                border-left: 1px solid rgba(255, 255, 255, 0.07);
            }

            .info-strip li:nth-child(n+3) {
                border-top: 1px solid rgba(255, 255, 255, 0.07);
            }

            .feature-card {
                grid-template-columns: 1fr;
            }

            .feature-card-img {
                min-height: 260px;
            }

            .channel-layout {
                grid-template-columns: 1fr;
            }

            .side-sticky {
                position: static;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 991px) {
            .nav-menu {
                position: fixed;
                inset: 0;
                width: 100%;
                min-height: 100dvh;
                height: 100%;
                padding: 130px 30px 30px;
                margin: 0;
                display: flex;
                flex-direction: column;
                align-items: center;
                justify-content: flex-start;
                gap: 42px;
                background: linear-gradient(135deg, rgba(5, 12, 22, 0.98), rgba(9, 21, 38, 0.97));
                z-index: 190;
                opacity: 0;
                visibility: hidden;
                transform: translateY(18px);
                transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
                overflow-y: auto;
                backdrop-filter: blur(20px);
            }

            .nav-menu.open {
                opacity: 1;
                visibility: visible;
                transform: none;
            }

            .nav-links {
                width: 100%;
                flex-direction: column;
                align-items: center;
                gap: 2px;
            }

            .nav-links a {
                width: 100%;
                max-width: 360px;
                text-align: center;
                font-size: 18px;
                padding: 15px 18px;
            }

            .nav-links a::after {
                left: 50%;
                right: auto;
                width: 28px;
                transform: translateX(-50%);
                bottom: 5px;
            }

            .nav-links a.active::after,
            .nav-links a:hover::after {
                right: auto;
                width: 42px;
            }

            .nav-actions {
                width: 100%;
            }

            .nav-actions .btn {
                width: 100%;
                max-width: 360px;
            }

            .nav-toggle {
                display: flex;
            }
        }

        @media (max-width: 767px) {
            .section-pad {
                padding: 70px 0;
            }

            .steps-wrap {
                padding: 70px 0;
            }

            .feature-card-copy {
                padding: 30px 24px;
            }

            .feature-list {
                grid-template-columns: 1fr;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .channel-item {
                grid-template-columns: 52px 1fr;
                gap: 16px;
                padding: 20px 16px;
            }

            .channel-num {
                width: 48px;
                height: 48px;
                font-size: 16px;
                border-radius: 15px;
            }

            .cta-inner {
                padding: 42px 22px;
                border-radius: 26px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 34px;
                margin-bottom: 38px;
            }
        }

        @media (max-width: 640px) {
            .topbar-right {
                display: none;
            }

            .topbar-tagline {
                display: none;
            }

            .topbar-left {
                width: 100%;
            }

            .hero-sub {
                font-size: 15px;
            }

            .info-strip {
                grid-template-columns: 1fr 1fr;
            }

            .info-strip li {
                padding: 20px 16px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .cta-buttons .btn {
                width: 100%;
                max-width: 320px;
            }

            .footer-bottom {
                flex-direction: column;
                justify-content: center;
                text-align: center;
            }

            .footer-bottom span {
                justify-content: center;
            }
        }