/* roulang page: index */
:root{
            --bg-deep:#07111f;
            --bg-night:#0b1729;
            --surface:#10233a;
            --surface-soft:rgba(18,40,65,.74);
            --surface-light:rgba(24,53,83,.58);
            --line:rgba(117,186,255,.18);
            --line-strong:rgba(91,220,255,.48);
            --text:#eef8ff;
            --muted:#96aec4;
            --primary:#52d9ff;
            --primary-deep:#178fc8;
            --secondary:#8f83ff;
            --accent:#ee65c6;
            --success:#6ee6b0;
            --warning:#f5cf71;
            --radius-lg:26px;
            --radius-md:17px;
            --radius-sm:11px;
            --shadow:0 20px 60px rgba(0,7,22,.38);
        }
        *,*::before,*::after{box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{
            margin:0;color:var(--text);background:
            radial-gradient(circle at 84% 5%,rgba(55,130,255,.15),transparent 28rem),
            radial-gradient(circle at 10% 48%,rgba(116,76,221,.08),transparent 25rem),
            var(--bg-deep);
            font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
            line-height:1.75;
            overflow-x:hidden;
        }
        body:before{
            content:"";position:fixed;inset:0;pointer-events:none;opacity:.17;
            background-image:linear-gradient(rgba(100,190,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(100,190,255,.08) 1px,transparent 1px);
            background-size:54px 54px;mask-image:linear-gradient(to bottom,black,transparent 80%);
        }
        a{color:inherit;text-decoration:none;transition:.25s ease}
        img{max-width:100%;display:block}
        button,input{font:inherit}
        :focus-visible{outline:3px solid var(--primary);outline-offset:4px}
        .site-container{max-width:1240px;margin:auto;padding-left:22px;padding-right:22px}
        .topbar{
            position:sticky;top:14px;z-index:20;margin:14px auto 0;
            max-width:1240px;border:1px solid var(--line);border-radius:18px;
            background:rgba(8,22,39,.84);backdrop-filter:blur(18px);box-shadow:var(--shadow)
        }
        .navbar{padding:12px 16px}
        .brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em}
        .brand-mark{
            width:36px;height:36px;display:grid;place-items:center;border-radius:11px;
            color:#061421;background:linear-gradient(145deg,var(--primary),#9cf6ff);
            box-shadow:0 0 20px rgba(82,217,255,.3);font-weight:900
        }
        .brand small{display:block;color:var(--muted);font-size:10px;letter-spacing:.12em;font-weight:600}
        .nav-link{color:var(--muted);font-size:14px;padding:9px 14px!important;border-radius:9px}
        .nav-link:hover,.nav-link.active{color:var(--text);background:rgba(82,217,255,.1)}
        .nav-link.active{box-shadow:inset 0 -2px var(--primary)}
        .navbar-toggler{border:1px solid var(--line);color:var(--text)}
        .navbar-toggler:focus{box-shadow:0 0 0 3px rgba(82,217,255,.2)}
        .btn-glow,.btn-ghost{
            display:inline-flex;align-items:center;justify-content:center;gap:8px;
            border-radius:12px;padding:12px 20px;font-weight:700;font-size:14px;
            transition:.25s ease;border:1px solid transparent
        }
        .btn-glow{color:#041421;background:linear-gradient(110deg,var(--primary),#a6f5ff);box-shadow:0 0 25px rgba(82,217,255,.23)}
        .btn-glow:hover{color:#041421;transform:translateY(-2px);box-shadow:0 0 34px rgba(82,217,255,.42)}
        .btn-glow:active{transform:translateY(1px)}
        .btn-ghost{color:var(--text);border-color:var(--line-strong);background:rgba(25,57,88,.35)}
        .btn-ghost:hover{color:var(--primary);border-color:var(--primary);background:rgba(82,217,255,.08)}
        .hero{padding:88px 0 68px}
        .hero-panel{
            position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius-lg);
            background:linear-gradient(120deg,rgba(13,34,58,.95),rgba(11,26,49,.73));
            box-shadow:var(--shadow);padding:clamp(28px,5vw,68px)
        }
        .hero-panel:after{content:"";position:absolute;width:340px;height:340px;right:-100px;top:-130px;border:1px solid rgba(82,217,255,.18);border-radius:50%;box-shadow:0 0 0 28px rgba(82,217,255,.025),0 0 0 58px rgba(82,217,255,.02)}
        .eyebrow,.section-kicker{color:var(--primary);font-size:12px;font-weight:800;letter-spacing:.16em;text-transform:uppercase}
        h1{font-size:clamp(38px,5vw,70px);line-height:1.13;letter-spacing:-.06em;margin:16px 0 20px;font-weight:900;max-width:760px}
        h2{font-size:clamp(25px,3vw,38px);line-height:1.25;letter-spacing:-.04em;margin:10px 0 14px}
        h3{font-size:18px;line-height:1.4;margin:0 0 8px}
        .hero-copy{max-width:680px;color:#c4d7e7;font-size:17px;margin-bottom:28px}
        .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
        .hero-metrics{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}
        .metric{padding:12px 16px;border-left:2px solid var(--primary);background:rgba(82,217,255,.06);border-radius:0 10px 10px 0}
        .metric strong{display:block;font-size:19px}.metric span{font-size:12px;color:var(--muted)}
        .hero-index{position:relative;z-index:1;background:rgba(4,15,29,.62);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:inset 0 0 30px rgba(82,217,255,.04)}
        .index-head{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:5px}
        .status{font-size:11px;color:var(--success);border:1px solid rgba(110,230,176,.35);padding:4px 8px;border-radius:99px}
        .index-row{display:flex;align-items:center;gap:12px;padding:15px 0;border-bottom:1px solid rgba(117,186,255,.1)}
        .index-row:last-child{border:0}.index-num{color:var(--primary);font-weight:800;width:25px}.index-row p{margin:0;font-size:14px}.index-row small{color:var(--muted);display:block;font-size:11px}
        section{padding:76px 0}
        .section-intro{color:var(--muted);max-width:670px;margin-bottom:32px}
        .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:30px}
        .feature-layout{display:grid;grid-template-columns:260px 1fr;gap:18px}
        .feature-tabs{border:1px solid var(--line);border-radius:var(--radius-md);padding:10px;background:rgba(12,31,52,.55)}
        .feature-tab{display:block;width:100%;border:0;text-align:left;background:transparent;color:var(--muted);padding:17px 15px;border-radius:11px;margin-bottom:4px;cursor:pointer}
        .feature-tab:hover,.feature-tab.active{color:var(--text);background:linear-gradient(90deg,rgba(82,217,255,.16),transparent);box-shadow:inset 3px 0 var(--primary)}
        .feature-panel{border:1px solid var(--line);border-radius:var(--radius-md);padding:30px;background:var(--surface-soft);min-height:255px}
        .feature-panel p{color:var(--muted);max-width:680px}.tag{display:inline-block;padding:5px 10px;border-radius:99px;font-size:11px;color:var(--primary);background:rgba(82,217,255,.1);border:1px solid rgba(82,217,255,.22);margin:4px 5px 12px 0}
        .scenario-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
        .scenario{padding:25px;border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(15,35,59,.65);position:relative}
        .scenario:before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;background:var(--primary);border-radius:4px}
        .scenario:nth-child(2):before{background:var(--secondary)}.scenario:nth-child(3):before{background:var(--accent)}.scenario:nth-child(4):before{background:var(--success)}
        .scenario p,.sample p,.access p,.faq-answer{color:var(--muted);font-size:14px}
        .scenario a{color:var(--primary);font-size:13px;font-weight:700}
        .preview-wrap{display:grid;grid-template-columns:1.25fr .75fr;gap:18px}
        .sample,.side-note{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface-soft);padding:27px}
        .sample-top{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-bottom:22px}
        .preview-list{display:grid;gap:11px}.preview-item{display:flex;gap:14px;align-items:center;padding:14px;border:1px solid rgba(117,186,255,.12);background:rgba(4,17,32,.4);border-radius:12px}
        .preview-art{width:56px;height:44px;border-radius:8px;background:linear-gradient(135deg,#23618c,#824a9e);position:relative;overflow:hidden}.preview-art:after{content:"";position:absolute;inset:10px;border:1px solid rgba(255,255,255,.38);transform:rotate(25deg)}
        .preview-item p{margin:0;color:var(--text);font-size:14px}.preview-item small{color:var(--muted);font-size:11px}
        .side-note{background:linear-gradient(145deg,rgba(82,217,255,.1),rgba(143,131,255,.1));display:flex;flex-direction:column;justify-content:space-between}
        .side-note strong{font-size:27px;display:block}.side-note p{margin:8px 0 25px}
        .access{border:1px solid rgba(143,131,255,.34);border-radius:var(--radius-lg);padding:34px;background:linear-gradient(120deg,rgba(61,55,135,.25),rgba(19,44,69,.6));display:flex;justify-content:space-between;align-items:center;gap:30px}
        .access h2{margin-top:0}.access p{max-width:650px;margin-bottom:0}
        .faq-list .accordion-item{background:rgba(15,35,59,.65);border:1px solid var(--line);margin-bottom:10px;border-radius:13px;overflow:hidden}
        .accordion-button{background:transparent;color:var(--text);font-weight:700;padding:20px}.accordion-button:not(.collapsed){background:rgba(82,217,255,.08);color:var(--primary);box-shadow:none}.accordion-button:after{filter:invert(1) brightness(2)}.accordion-body{padding:0 20px 20px}
        .site-footer{border-top:1px solid var(--line);padding:45px 0 30px;background:rgba(4,14,26,.7)}
        .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:30px}.footer-title{font-weight:800;margin-bottom:12px}.footer-copy,.footer-links a,.risk{font-size:13px;color:var(--muted)}.footer-links{display:grid;gap:7px}.footer-links a:hover{color:var(--primary)}
        .copyright{border-top:1px solid var(--line);margin-top:32px;padding-top:20px;display:flex;justify-content:space-between;gap:20px;color:#6f889d;font-size:12px}
        .mobile-tabs{display:none}
        @media(max-width:991px){.topbar{top:8px;margin:8px 12px}.feature-layout{grid-template-columns:1fr}.feature-tabs{display:flex;overflow:auto;gap:5px}.feature-tab{min-width:145px;margin:0}.hero{padding-top:60px}.preview-wrap{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}}
        @media(max-width:767px){
            body{padding-bottom:76px}.site-container{padding-left:16px;padding-right:16px}.navbar{padding:10px 8px}.navbar-collapse{padding-top:12px}.nav-link{padding:10px!important}
            .hero{padding:42px 0 35px}.hero-panel{padding:27px 20px}.hero-copy{font-size:15px}h1{font-size:39px}.hero-metrics{gap:8px}.metric{flex:1;min-width:125px;padding:10px}
            section{padding:52px 0}.section-head{display:block}.section-intro{font-size:14px}.scenario-grid{grid-template-columns:1fr}.access{display:block;padding:26px 21px}.access .btn-glow{margin-top:20px;width:100%}
            .sample,.side-note{padding:20px}.sample-top{display:block}.sample-top .tag{margin-top:10px}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-top:8px}
            .mobile-tabs{position:fixed;display:flex;left:10px;right:10px;bottom:10px;z-index:30;border:1px solid var(--line-strong);border-radius:17px;padding:7px 5px calc(7px + env(safe-area-inset-bottom));background:rgba(6,19,34,.92);backdrop-filter:blur(18px);box-shadow:0 10px 35px rgba(0,0,0,.4)}
            .mobile-tabs a{flex:1;text-align:center;color:var(--muted);font-size:11px;padding:5px;border-radius:10px}.mobile-tabs a span{display:block;font-size:17px;line-height:1.2}.mobile-tabs a.active{color:var(--primary);background:rgba(82,217,255,.1)}
        }
        @media(max-width:420px){h1{font-size:34px}.hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%}.preview-item{align-items:flex-start}}

/* roulang page: category1 */
:root{
      --bg-deep:#07111f;
      --bg-night:#0b1729;
      --surface:#10233a;
      --surface-soft:rgba(18,40,65,.74);
      --surface-light:rgba(24,53,83,.58);
      --line:rgba(117,186,255,.18);
      --line-strong:rgba(91,220,255,.48);
      --text:#eef8ff;
      --muted:#96aec4;
      --primary:#52d9ff;
      --primary-deep:#178fc8;
      --secondary:#8f83ff;
      --accent:#ee65c6;
      --success:#6ee6b0;
      --warning:#f5cf71;
      --radius-lg:26px;
      --radius-md:17px;
      --radius-sm:11px;
      --shadow:0 20px 60px rgba(0,7,22,.38);
    }

    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:
        radial-gradient(circle at 84% 5%,rgba(55,130,255,.15),transparent 28rem),
        radial-gradient(circle at 10% 48%,rgba(116,76,221,.08),transparent 25rem),
        var(--bg-deep);
      font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
      line-height:1.75;
      overflow-x:hidden;
    }
    body:before{
      content:"";position:fixed;inset:0;pointer-events:none;opacity:.17;
      background-image:linear-gradient(rgba(100,190,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(100,190,255,.08) 1px,transparent 1px);
      background-size:54px 54px;
      mask-image:linear-gradient(to bottom,black,transparent 80%);
    }
    a{color:inherit;text-decoration:none;transition:.25s ease}
    img{display:block;max-width:100%}
    button,input{font:inherit}
    h1,h2,h3,h4{line-height:1.25;letter-spacing:-.035em}
    h1{font-size:clamp(2rem,4.2vw,4rem);margin:0 0 18px}
    h2{font-size:clamp(1.55rem,2.5vw,2.35rem);margin:0 0 12px}
    h3{font-size:1.12rem;margin:0 0 8px}
    p{margin-top:0}
    :focus-visible{outline:3px solid rgba(82,217,255,.72);outline-offset:3px}
    .site-container{max-width:1240px;margin:auto;padding-left:22px;padding-right:22px}

    .topbar{
      position:sticky;top:14px;z-index:20;
      max-width:1240px;margin:14px auto 0;
      border:1px solid var(--line);border-radius:18px;
      background:rgba(8,22,39,.84);
      backdrop-filter:blur(18px);
      box-shadow:var(--shadow)
    }
    .navbar{padding:12px 16px}
    .brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em}
    .brand-mark{
      width:36px;height:36px;display:grid;place-items:center;border-radius:11px;
      color:#061421;background:linear-gradient(145deg,var(--primary),#9cf6ff);
      box-shadow:0 0 20px rgba(82,217,255,.3);font-weight:900
    }
    .brand small{display:block;color:var(--muted);font-size:10px;letter-spacing:.12em;font-weight:600}
    .nav-link{color:var(--muted);font-size:14px;padding:9px 14px!important;border-radius:9px}
    .nav-link:hover,.nav-link.active{color:var(--text);background:rgba(82,217,255,.1)}
    .nav-link.active{box-shadow:inset 0 -2px var(--primary)}
    .navbar-toggler{border:1px solid var(--line);color:var(--text)}
    .navbar-toggler:focus{box-shadow:0 0 0 3px rgba(82,217,255,.2)}
    .navbar-toggler-icon{filter:invert(1) sepia(1) saturate(2)}
    .btn-glow,.btn-ghost{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border-radius:12px;padding:12px 20px;font-weight:700;font-size:14px;
      transition:.25s ease;border:1px solid transparent
    }
    .btn-glow{color:#041421;background:linear-gradient(110deg,var(--primary),#a6f5ff);box-shadow:0 0 25px rgba(82,217,255,.23)}
    .btn-glow:hover{color:#041421;transform:translateY(-2px);box-shadow:0 0 34px rgba(82,217,255,.42)}
    .btn-glow:active{transform:translateY(1px)}
    .btn-ghost{color:var(--text);border-color:var(--line-strong);background:rgba(25,57,88,.35)}
    .btn-ghost:hover{color:var(--primary);border-color:var(--primary);background:rgba(82,217,255,.08)}

    .category-head{padding:78px 0 38px}
    .eyebrow,.section-kicker{color:var(--primary);font-size:12px;font-weight:800;letter-spacing:.16em}
    .category-lead{max-width:790px;color:#bdd1e2;font-size:17px;margin-bottom:25px}
    .head-meta{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
    .tag{
      display:inline-flex;align-items:center;padding:5px 11px;border-radius:99px;
      font-size:11px;color:var(--primary);background:rgba(82,217,255,.1);
      border:1px solid rgba(82,217,255,.22);margin:3px 4px 3px 0
    }
    .tag.purple{color:#b5adff;border-color:rgba(143,131,255,.3);background:rgba(143,131,255,.1)}
    .tag.green{color:var(--success);border-color:rgba(110,230,176,.28);background:rgba(110,230,176,.08)}

    .filter-panel{
      border:1px solid var(--line);border-radius:var(--radius-md);
      padding:15px;background:rgba(12,31,52,.62);box-shadow:var(--shadow)
    }
    .filter-form{display:flex;gap:10px;align-items:center}
    .search-wrap{position:relative;flex:1}
    .search-wrap span{position:absolute;left:15px;top:9px;color:var(--primary);font-size:18px}
    .search-input{
      width:100%;border:1px solid var(--line);border-radius:11px;
      color:var(--text);background:rgba(4,17,32,.7);padding:10px 15px 10px 43px;
    }
    .search-input::placeholder{color:#6e879d}
    .search-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(82,217,255,.12);outline:0}
    .filter-tabs{display:flex;gap:7px;overflow:auto;padding-top:12px}
    .filter-btn{
      flex:0 0 auto;border:1px solid var(--line);border-radius:99px;
      color:var(--muted);background:rgba(11,28,47,.7);padding:7px 14px;
      cursor:pointer;font-size:13px
    }
    .filter-btn:hover,.filter-btn.active{color:#041421;background:var(--primary);border-color:var(--primary)}
    .filter-btn:active{transform:translateY(1px)}

    .content-section{padding:34px 0 78px}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:22px;margin-bottom:22px}
    .section-intro{color:var(--muted);max-width:650px;margin:0}
    .browse-layout{display:grid;grid-template-columns:245px minmax(0,1fr);gap:22px;align-items:start}
    .index-panel{
      position:sticky;top:104px;border:1px solid var(--line);border-radius:var(--radius-md);
      padding:16px;background:rgba(12,31,52,.58)
    }
    .index-title{color:var(--muted);font-size:12px;letter-spacing:.12em;margin:3px 10px 12px}
    .index-link{
      display:flex;align-items:center;justify-content:space-between;
      color:var(--muted);padding:12px 11px;border-radius:10px;margin-bottom:4px;font-size:14px
    }
    .index-link:hover,.index-link.active{color:var(--text);background:linear-gradient(90deg,rgba(82,217,255,.16),transparent);box-shadow:inset 3px 0 var(--primary)}
    .index-link b{font-size:11px;color:var(--primary);font-weight:600}
    .content-flow{display:grid;gap:14px}
    .browse-card{
      display:grid;grid-template-columns:190px minmax(0,1fr) auto;gap:20px;align-items:center;
      border:1px solid var(--line);border-radius:var(--radius-md);padding:16px;
      background:linear-gradient(110deg,rgba(18,40,65,.8),rgba(10,27,47,.72));
      box-shadow:0 12px 30px rgba(0,7,22,.2);transition:.25s ease
    }
    .browse-card:nth-child(even){grid-template-columns:145px minmax(0,1fr) auto;background:rgba(12,31,52,.58)}
    .browse-card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:0 17px 38px rgba(0,7,22,.38)}
    .cover{
      position:relative;min-height:118px;border-radius:12px;overflow:hidden;
      background:
        linear-gradient(135deg,rgba(82,217,255,.28),transparent 48%),
        linear-gradient(35deg,#101e47,#192e58 53%,#5a3b8d)
    }
    .browse-card:nth-child(2) .cover{background:linear-gradient(135deg,#184c6a,#1a294d 50%,#814d92)}
    .browse-card:nth-child(3) .cover{background:linear-gradient(135deg,#244a75,#111d3d 50%,#326c8b)}
    .browse-card:nth-child(4) .cover{background:linear-gradient(135deg,#51285f,#172c55 50%,#267c82)}
    .cover:after{content:"";position:absolute;inset:15px;border:1px solid rgba(190,244,255,.36);border-radius:8px;transform:skew(-12deg)}
    .cover-label{position:absolute;left:13px;bottom:10px;z-index:1;color:#dffaff;font-size:11px;letter-spacing:.12em}
    .card-copy{min-width:0}
    .card-copy p{color:var(--muted);font-size:14px;margin:8px 0 13px}
    .card-meta{display:flex;gap:15px;flex-wrap:wrap;color:#7591a8;font-size:11px}
    .card-action{white-space:nowrap;color:var(--primary);font-size:13px;font-weight:800}
    .card-action:hover{color:#b5f5ff;transform:translateX(3px)}
    .empty-note{
      display:none;margin-top:14px;padding:22px;border:1px dashed var(--line-strong);
      border-radius:var(--radius-md);color:var(--muted);text-align:center
    }

    .path-section{padding:72px 0}
    .path-panel{
      border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;
      background:linear-gradient(120deg,rgba(16,35,58,.88),rgba(19,30,65,.72));box-shadow:var(--shadow)
    }
    .path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:25px}
    .path-step{position:relative;padding:21px;border:1px solid var(--line);border-radius:var(--radius-md);background:rgba(4,17,32,.35)}
    .step-no{color:var(--primary);font:700 12px/1 monospace;letter-spacing:.1em}
    .path-step p{color:var(--muted);font-size:13px;margin:8px 0 0}

    .access-strip{
      margin:0 0 78px;padding:21px 25px;border:1px solid rgba(110,230,176,.25);
      border-radius:var(--radius-md);background:rgba(22,67,68,.2);
      display:flex;justify-content:space-between;align-items:center;gap:18px
    }
    .access-strip p{margin:4px 0 0;color:var(--muted);font-size:13px}
    .status{color:var(--success);font-size:12px;font-weight:800}

    .faq-section{padding:0 0 78px}
    .accordion-item{background:rgba(15,35,58,.68)!important;border:1px solid var(--line)!important;margin-bottom:10px;border-radius:var(--radius-sm)!important;overflow:hidden}
    .accordion-button{color:var(--text)!important;background:transparent!important;box-shadow:none!important;font-weight:700;padding:18px 20px}
    .accordion-button:not(.collapsed){color:var(--primary)!important}
    .accordion-button:after{filter:invert(1) sepia(1) saturate(2)}
    .faq-answer{padding:0 20px 20px;font-size:14px;color:var(--muted)}

    .cta-panel{
      padding:38px;border:1px solid rgba(82,217,255,.35);border-radius:var(--radius-lg);
      background:radial-gradient(circle at 90% 20%,rgba(143,131,255,.23),transparent 28%),rgba(15,37,61,.82);
      box-shadow:0 0 45px rgba(82,217,255,.09);display:flex;align-items:center;justify-content:space-between;gap:25px
    }
    .cta-panel p{color:var(--muted);margin:8px 0 0;max-width:650px}

    .site-footer{border-top:1px solid var(--line);background:rgba(5,16,29,.78);padding:48px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.1fr;gap:40px}
    .footer-copy,.risk{color:var(--muted);font-size:13px;max-width:360px}
    .footer-title{font-size:13px;font-weight:800;color:var(--text);margin-bottom:13px}
    .footer-links{display:grid;gap:8px;color:var(--muted);font-size:13px}
    .footer-links a:hover{color:var(--primary)}
    .copyright{border-top:1px solid var(--line);margin-top:35px;padding-top:18px;display:flex;justify-content:space-between;gap:15px;color:#668198;font-size:11px}

    .mobile-tabs{display:none}
    @media (max-width:1024px){
      .site-container{padding-left:20px;padding-right:20px}
      .topbar{margin-left:14px;margin-right:14px}
      .browse-layout{grid-template-columns:210px minmax(0,1fr)}
      .browse-card{grid-template-columns:155px minmax(0,1fr)}
      .browse-card:nth-child(even){grid-template-columns:125px minmax(0,1fr)}
      .card-action{grid-column:2}
      .path-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      body{padding-bottom:76px}
      .topbar{position:sticky;top:8px;margin-top:8px}
      .navbar{padding:10px 12px}
      .category-head{padding:57px 0 28px}
      .category-lead{font-size:15px}
      .browse-layout{display:block}
      .index-panel{position:static;margin-bottom:18px;display:flex;gap:6px;overflow:auto;padding:9px}
      .index-title{display:none}
      .index-link{flex:0 0 auto;margin:0;padding:9px 13px}
      .filter-form{display:block}
      .search-wrap{margin-bottom:10px}
      .path-grid{grid-template-columns:1fr}
      .access-strip,.cta-panel{display:block}
      .access-strip .btn-ghost,.cta-panel .btn-glow{margin-top:18px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
      .footer-grid>div:first-child{grid-column:1/-1}
      .mobile-tabs{
        display:flex;position:fixed;z-index:30;bottom:0;left:0;right:0;
        padding:8px 12px calc(8px + env(safe-area-inset-bottom));
        background:rgba(6,17,30,.92);backdrop-filter:blur(18px);
        border-top:1px solid var(--line)
      }
      .mobile-tabs a{flex:1;text-align:center;color:var(--muted);font-size:11px;padding:5px 3px}
      .mobile-tabs a span{display:block;color:var(--primary);font-size:17px;line-height:1.2}
      .mobile-tabs a.active{color:var(--text)}
      .mobile-tabs a.active:before{content:"";display:block;margin:-8px auto 5px;width:28px;height:2px;background:var(--primary);box-shadow:0 0 10px var(--primary)}
    }
    @media (max-width:520px){
      h1{font-size:2rem}
      .site-container{padding-left:16px;padding-right:16px}
      .browse-card,.browse-card:nth-child(even){display:block}
      .cover{min-height:145px;margin-bottom:16px}
      .card-action{display:inline-flex;margin-top:14px;grid-column:auto}
      .section-head{display:block}
      .section-head .section-intro{margin-top:8px}
      .path-panel{padding:22px 18px}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid>div:first-child{grid-column:auto}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:5px}
    }