/* roulang page: index */
:root {
            --bg: #070d1d;
            --bg-soft: #0b1530;
            --panel: rgba(16, 30, 61, .72);
            --panel-strong: #101f40;
            --text: #eef5ff;
            --muted: #9baecc;
            --faint: #6d82a8;
            --line: rgba(133, 169, 232, .19);
            --cyan: #48d9ff;
            --blue: #5b82ff;
            --violet: #a77bff;
            --pink: #ff7bbd;
            --radius-lg: 24px;
            --radius-md: 16px;
            --shadow: 0 18px 48px rgba(0, 0, 0, .28);
            --container: 1220px;
            --section: 108px;
        }
        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--text);
            background:
                radial-gradient(circle at 80% 0%, rgba(57, 107, 255, .14), transparent 28rem),
                radial-gradient(circle at 8% 35%, rgba(78, 218, 255, .06), transparent 24rem),
                var(--bg);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
        }
        body::before {
            content: "";
            position: fixed;
            inset: 0;
            pointer-events: none;
            opacity: .16;
            background-image: linear-gradient(rgba(108, 159, 245, .11) 1px, transparent 1px), linear-gradient(90deg, rgba(108, 159, 245, .11) 1px, transparent 1px);
            background-size: 56px 56px;
            mask-image: linear-gradient(to bottom, #000, transparent 75%);
        }
        a { color: var(--cyan); text-decoration: none; transition: color .2s ease, border-color .2s ease, transform .2s ease; }
        a:hover { color: #fff; }
        img { max-width: 100%; display: block; }
        button, input { font: inherit; }
        .site-container { width: min(var(--container), calc(100% - 40px)); margin: auto; }
        .topbar {
            position: relative;
            z-index: 5;
            padding: 22px 0 14px;
            border-bottom: 1px solid rgba(133, 169, 232, .12);
            background: rgba(7, 13, 29, .78);
            backdrop-filter: blur(18px);
        }
        .brand { display: inline-flex; align-items: center; gap: 12px; color: var(--text); font-size: 19px; font-weight: 800; letter-spacing: -.04em; white-space: nowrap; }
        .brand:hover { color: #fff; }
        .brand-mark {
            width: 38px; height: 38px; display: grid; place-items: center; border-radius: 12px;
            color: #061222; background: linear-gradient(135deg, var(--cyan), var(--blue));
            box-shadow: 0 0 22px rgba(72, 217, 255, .34);
        }
        .brand-mark::after { content: ""; width: 0; height: 0; border-top: 7px solid transparent; border-bottom: 7px solid transparent; border-left: 10px solid #061222; margin-left: 3px; }
        .search-box { position: relative; max-width: 520px; flex: 1; margin: 0 28px; }
        .search-box input {
            width: 100%; height: 46px; padding: 0 108px 0 18px; color: var(--text);
            border: 1px solid var(--line); border-radius: 14px; outline: none; background: rgba(16, 31, 64, .72);
        }
        .search-box input::placeholder { color: #7185a7; }
        .search-box input:focus { border-color: var(--cyan); box-shadow: 0 0 0 4px rgba(72, 217, 255, .1), 0 0 20px rgba(72, 217, 255, .12); }
        .search-box button { position: absolute; right: 5px; top: 5px; height: 36px; padding: 0 15px; border: 0; border-radius: 10px; color: #061222; background: var(--cyan); font-weight: 700; }
        .search-box button:hover { background: #a5efff; }
        .btn-glow, .btn-line {
            display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 22px;
            border-radius: 13px; font-weight: 700; border: 1px solid transparent;
        }
        .btn-glow { color: #061222; background: linear-gradient(135deg, #75e9ff, #5b8cff); box-shadow: 0 8px 26px rgba(72, 180, 255, .28); }
        .btn-glow:hover { color: #061222; transform: translateY(-2px); box-shadow: 0 12px 32px rgba(72, 180, 255, .44); }
        .btn-glow:active, .btn-line:active { transform: translateY(0); }
        .btn-line { color: var(--text); border-color: rgba(104, 207, 255, .5); background: rgba(29, 57, 107, .3); }
        .btn-line:hover { color: #fff; border-color: var(--cyan); background: rgba(72, 217, 255, .12); transform: translateY(-2px); }
        a:focus-visible, button:focus-visible, input:focus-visible { outline: 3px solid rgba(72, 217, 255, .65); outline-offset: 3px; }
        .channel-nav { padding-top: 14px; overflow-x: auto; scrollbar-width: none; }
        .channel-nav::-webkit-scrollbar { display: none; }
        .channel-list { display: flex; gap: 8px; min-width: max-content; list-style: none; padding: 0; margin: 0; }
        .channel-link { display: block; padding: 7px 16px; border-radius: 999px; color: var(--muted); font-size: 14px; }
        .channel-link:hover { color: #fff; background: rgba(72, 217, 255, .08); }
        .channel-link.active { color: #061222; background: var(--cyan); box-shadow: 0 0 18px rgba(72, 217, 255, .27); }
        .hero { position: relative; padding: 94px 0 82px; }
        .hero::after { content: ""; position: absolute; width: 390px; height: 390px; right: 4%; top: 20px; border-radius: 50%; background: rgba(91, 130, 255, .11); filter: blur(70px); pointer-events: none; }
        .eyebrow { display: inline-flex; gap: 8px; align-items: center; color: var(--cyan); font-size: 13px; font-weight: 700; letter-spacing: .08em; }
        .eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--pink); box-shadow: 0 0 12px var(--pink); }
        h1, h2, h3, p { margin-top: 0; }
        h1 { max-width: 780px; margin: 20px 0 22px; font-size: clamp(38px, 5vw, 66px); line-height: 1.17; letter-spacing: -.06em; font-weight: 900; }
        h1 em { color: var(--cyan); font-style: normal; }
        .hero-copy { max-width: 690px; color: var(--muted); font-size: 17px; line-height: 1.9; }
        .hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }
        .hero-badges { display: flex; gap: 9px; flex-wrap: wrap; margin-top: 24px; }
        .badge-soft, .tag { display: inline-flex; align-items: center; padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; color: #b9d2f2; background: rgba(31, 58, 108, .46); font-size: 12px; }
        .preview-stage { position: relative; min-height: 315px; margin-top: 42px; padding: 22px; overflow: hidden; border: 1px solid rgba(111, 186, 255, .25); border-radius: 26px; background: linear-gradient(145deg, rgba(18, 42, 83, .88), rgba(11, 21, 47, .88)); box-shadow: var(--shadow); }
        .preview-stage::before { content: ""; position: absolute; inset: 0; background: linear-gradient(120deg, transparent 20%, rgba(72, 217, 255, .08), transparent 62%); }
        .preview-grid { position: relative; display: grid; grid-template-columns: 1.35fr .85fr .85fr; gap: 13px; height: 270px; }
        .preview-tile { position: relative; display: flex; flex-direction: column; justify-content: flex-end; min-width: 0; padding: 17px; overflow: hidden; border-radius: 17px; background: linear-gradient(160deg, #243d76, #111d3d 65%); }
        .preview-tile:nth-child(2) { background: linear-gradient(160deg, #5b326b, #182347 70%); }
        .preview-tile:nth-child(3) { background: linear-gradient(160deg, #1e6677, #111e43 70%); }
        .preview-tile::before { content: ""; position: absolute; inset: 0; opacity: .55; background: radial-gradient(circle at 70% 25%, rgba(255,255,255,.28), transparent 8%), linear-gradient(145deg, transparent 35%, rgba(4,9,22,.7)); }
        .play { position: absolute; top: 16px; right: 16px; z-index: 1; width: 40px; height: 40px; display: grid; place-items: center; border-radius: 50%; color: #061222; background: var(--cyan); }
        .play::after { content: ""; margin-left: 3px; border-top: 6px solid transparent; border-bottom: 6px solid transparent; border-left: 9px solid #061222; }
        .preview-tile .tag, .preview-tile strong { position: relative; z-index: 1; align-self: flex-start; }
        .preview-tile strong { margin-top: 7px; font-size: 16px; }
        .section { padding: var(--section) 0; }
        .section-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 34px; }
        .section-heading h2 { margin-bottom: 8px; font-size: clamp(28px, 3.3vw, 40px); line-height: 1.25; letter-spacing: -.045em; }
        .section-heading p { max-width: 570px; margin-bottom: 0; color: var(--muted); }
        .glass { border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--panel); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
        .feature-layout { display: grid; grid-template-columns: 1.2fr .8fr; gap: 18px; }
        .feature-main { min-height: 330px; padding: 32px; position: relative; overflow: hidden; background: linear-gradient(145deg, rgba(22, 53, 105, .86), rgba(11, 23, 49, .78)); }
        .feature-main::after { content: "▶"; position: absolute; right: 38px; bottom: 28px; color: rgba(72, 217, 255, .16); font-size: 110px; }
        .feature-main h3 { max-width: 480px; margin: 30px 0 10px; font-size: 29px; }
        .feature-main p { position: relative; z-index: 1; max-width: 500px; color: var(--muted); }
        .feature-list { display: grid; gap: 12px; }
        .mini-feature { display: flex; gap: 15px; align-items: flex-start; padding: 21px; transition: .22s ease; }
        .mini-feature:hover, .case-card:hover, .topic-item:hover { border-color: rgba(72, 217, 255, .45); transform: translateY(-3px); }
        .icon-box { flex: 0 0 39px; width: 39px; height: 39px; display: grid; place-items: center; border-radius: 12px; color: var(--cyan); background: rgba(72, 217, 255, .12); }
        .mini-feature h3 { margin-bottom: 3px; font-size: 17px; }
        .mini-feature p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
        .scene-rail { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
        .scene-step { position: relative; padding: 23px 20px 26px; border-top: 2px solid rgba(72,217,255,.35); }
        .scene-step:first-child { border-color: var(--cyan); }
        .step-no { color: var(--cyan); font-size: 12px; font-weight: 800; letter-spacing: .1em; }
        .scene-step h3 { margin: 18px 0 8px; font-size: 19px; }
        .scene-step p { margin: 0; color: var(--muted); font-size: 14px; }
        .case-board { display: grid; grid-template-columns: 1.5fr .7fr; gap: 16px; }
        .case-main { min-height: 285px; padding: 30px; background: linear-gradient(135deg, rgba(48, 69, 137, .85), rgba(18, 26, 67, .9)); }
        .case-main h3 { margin: 70px 0 8px; font-size: 28px; }
        .case-main p { max-width: 520px; color: #c7d4ee; }
        .case-index { display: grid; gap: 12px; }
        .case-card { padding: 20px; transition: .22s ease; }
        .case-card strong { display: block; margin: 11px 0 3px; font-size: 16px; }
        .case-card span { color: var(--muted); font-size: 13px; }
        .entry-layout { display: grid; grid-template-columns: 1.25fr .75fr; gap: 18px; align-items: stretch; }
        .entry-main { padding: 34px; border: 1px solid rgba(72,217,255,.42); border-radius: var(--radius-lg); background: linear-gradient(135deg, rgba(21, 58, 102, .9), rgba(38, 27, 77, .8)); }
        .entry-main h3 { margin: 18px 0 8px; font-size: 30px; }
        .entry-main p, .entry-side p { color: var(--muted); }
        .entry-side { display: flex; flex-direction: column; justify-content: space-between; padding: 27px; }
        .entry-side h3 { font-size: 20px; margin-bottom: 7px; }
        .entry-side + .entry-side { margin-top: -1px; }
        .faq-wrap { max-width: 860px; margin: auto; }
        .accordion-item { overflow: hidden; margin-bottom: 10px; border: 1px solid var(--line) !important; border-radius: 14px !important; background: var(--panel) !important; }
        .accordion-button { color: var(--text) !important; background: transparent !important; box-shadow: none !important; font-weight: 700; }
        .accordion-button::after { filter: invert(1); opacity: .7; }
        .accordion-body { color: var(--muted); padding-top: 0; font-size: 14px; }
        .cta-band { padding: 38px; border: 1px solid rgba(167,123,255,.32); border-radius: var(--radius-lg); background: radial-gradient(circle at 80% 20%, rgba(167,123,255,.18), transparent 26rem), rgba(20, 28, 65, .82); }
        .cta-band h2 { margin-bottom: 10px; font-size: 29px; }
        .cta-band p { margin: 0; color: var(--muted); }
        .site-footer { padding: 44px 0 27px; border-top: 1px solid var(--line); background: rgba(5, 10, 23, .8); }
        .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 35px; }
        .footer-title { margin-bottom: 14px; color: #fff; font-size: 14px; font-weight: 700; }
        .footer-links { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
        .footer-links a, .footer-note { color: var(--muted); font-size: 13px; }
        .footer-links a:hover { color: var(--cyan); padding-left: 3px; }
        .copyright { display: flex; justify-content: space-between; gap: 15px; padding-top: 25px; margin-top: 30px; border-top: 1px solid rgba(133,169,232,.1); color: var(--faint); font-size: 12px; }
        @media (max-width: 992px) {
            :root { --section: 78px; }
            .feature-layout, .case-board, .entry-layout { grid-template-columns: 1fr; }
            .scene-rail { grid-template-columns: repeat(2, 1fr); }
            .search-box { margin: 0 14px; }
        }
        @media (max-width: 768px) {
            .site-container { width: min(100% - 32px, var(--container)); }
            .topbar { padding-top: 15px; }
            .top-row { flex-wrap: wrap; gap: 13px; }
            .brand { order: 1; }
            .top-row > .btn-glow { order: 2; margin-left: auto; padding: 0 15px; }
            .search-box { order: 3; flex-basis: 100%; max-width: none; margin: 0; }
            .hero { padding: 65px 0 50px; }
            .hero-copy { font-size: 15px; }
            .section-heading { display: block; }
            .section-heading p { margin-top: 12px; }
            .preview-grid { height: 250px; grid-template-columns: 1.2fr 1fr; }
            .preview-tile:nth-child(3) { display: none; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 576px) {
            h1 { font-size: 39px; }
            .hero-actions { display: grid; grid-template-columns: 1fr; }
            .hero-actions a { width: 100%; }
            .preview-stage { padding: 12px; }
            .preview-grid { height: 230px; }
            .scene-rail { grid-template-columns: 1fr; }
            .feature-main, .entry-main, .cta-band { padding: 24px; }
            .feature-main h3, .case-main h3, .entry-main h3 { font-size: 24px; }
            .case-main h3 { margin-top: 55px; }
            .footer-grid { grid-template-columns: 1fr; gap: 25px; }
            .copyright { display: block; }
            .copyright span { display: block; margin-top: 7px; }
        }
        @media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; } }

/* roulang page: category1 */
:root{
      --bg:#070d1d;
      --bg-soft:#0b1530;
      --panel:rgba(16,30,61,.72);
      --panel-strong:#101f40;
      --text:#eef5ff;
      --muted:#9baecc;
      --faint:#6d82a8;
      --line:rgba(133,169,232,.19);
      --cyan:#48d9ff;
      --blue:#5b82ff;
      --violet:#a77bff;
      --pink:#ff7bbd;
      --success:#73e6c0;
      --radius-lg:24px;
      --radius-md:16px;
      --shadow:0 18px 48px rgba(0,0,0,.28);
      --container:1220px;
      --section:78px;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;color:var(--text);background:
      radial-gradient(circle at 84% 0%,rgba(57,107,255,.14),transparent 28rem),
      radial-gradient(circle at 5% 38%,rgba(78,218,255,.06),transparent 24rem),var(--bg);
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      line-height:1.75;overflow-x:hidden;
    }
    body::before{
      content:"";position:fixed;inset:0;pointer-events:none;opacity:.16;
      background-image:linear-gradient(rgba(108,159,245,.11) 1px,transparent 1px),linear-gradient(90deg,rgba(108,159,245,.11) 1px,transparent 1px);
      background-size:56px 56px;mask-image:linear-gradient(to bottom,#000,transparent 75%);
    }
    a{color:var(--cyan);text-decoration:none;transition:.2s ease}
    a:hover{color:#fff}
    img{display:block;max-width:100%}
    button,input,select{font:inherit}
    .site-container{width:min(var(--container),calc(100% - 40px));margin:auto}
    .topbar{
      position:relative;z-index:5;padding:22px 0 14px;
      border-bottom:1px solid rgba(133,169,232,.12);
      background:rgba(7,13,29,.78);backdrop-filter:blur(18px)
    }
    .top-row{gap:0}
    .brand{display:inline-flex;align-items:center;gap:12px;color:var(--text);font-size:19px;font-weight:800;letter-spacing:-.04em;white-space:nowrap}
    .brand:hover{color:#fff}
    .brand-mark{
      width:38px;height:38px;display:grid;place-items:center;border-radius:12px;
      background:linear-gradient(135deg,var(--cyan),var(--blue));
      box-shadow:0 0 22px rgba(72,217,255,.34)
    }
    .brand-mark::after{
      content:"";width:0;height:0;border-top:7px solid transparent;border-bottom:7px solid transparent;
      border-left:10px solid #061222;margin-left:3px
    }
    .search-box{position:relative;max-width:520px;flex:1;margin:0 28px}
    .search-box input{
      width:100%;height:46px;padding:0 108px 0 18px;color:var(--text);
      border:1px solid var(--line);border-radius:14px;outline:none;background:rgba(16,31,64,.72)
    }
    .search-box input::placeholder{color:#7185a7}
    .search-box input:focus{border-color:var(--cyan);box-shadow:0 0 0 4px rgba(72,217,255,.1),0 0 20px rgba(72,217,255,.12)}
    .search-box button{
      position:absolute;right:5px;top:5px;height:36px;padding:0 15px;border:0;border-radius:10px;
      color:#061222;background:var(--cyan);font-weight:700;cursor:pointer
    }
    .search-box button:hover{background:#a5efff}
    .btn-glow,.btn-line{
      display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;
      border-radius:13px;font-weight:700;border:1px solid transparent
    }
    .btn-glow{color:#061222;background:linear-gradient(135deg,#75e9ff,#5b8cff);box-shadow:0 8px 26px rgba(72,180,255,.28)}
    .btn-glow:hover{color:#061222;transform:translateY(-2px);box-shadow:0 12px 32px rgba(72,180,255,.44)}
    .btn-line{color:var(--text);border-color:rgba(104,207,255,.5);background:rgba(29,57,107,.3)}
    .btn-line:hover{color:#fff;border-color:var(--cyan);background:rgba(72,217,255,.12);transform:translateY(-2px)}
    a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
      outline:3px solid rgba(72,217,255,.65);outline-offset:3px
    }
    .channel-nav{padding-top:14px;overflow-x:auto;scrollbar-width:none}
    .channel-nav::-webkit-scrollbar{display:none}
    .channel-list{display:flex;gap:8px;min-width:max-content;list-style:none;padding:0;margin:0}
    .channel-link{
      display:block;padding:8px 16px;border:1px solid transparent;border-radius:999px;color:var(--muted);
      font-size:14px;white-space:nowrap
    }
    .channel-link:hover{color:#fff;border-color:var(--line);background:rgba(72,217,255,.07)}
    .channel-link.active{color:#071225;border-color:var(--cyan);background:var(--cyan);box-shadow:0 0 20px rgba(72,217,255,.2)}
    .page-head{position:relative;padding:64px 0 42px;border-bottom:1px solid rgba(133,169,232,.1)}
    .page-head::after{
      content:"";position:absolute;right:8%;top:18px;width:280px;height:180px;
      background:rgba(91,130,255,.14);filter:blur(65px);pointer-events:none
    }
    .eyebrow{display:inline-flex;gap:8px;align-items:center;color:var(--cyan);font-size:13px;font-weight:700;letter-spacing:.08em}
    .eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--pink);box-shadow:0 0 12px var(--pink)}
    h1,h2,h3,p{position:relative}
    h1{margin:14px 0 12px;font-size:clamp(32px,5vw,54px);line-height:1.18;letter-spacing:-.045em}
    h2{margin:0;font-size:30px;line-height:1.3;letter-spacing:-.03em}
    h3{margin:0;font-size:19px;line-height:1.4}
    .lead{max-width:720px;margin:0;color:var(--muted);font-size:17px}
    .crumbs{display:flex;gap:9px;align-items:center;margin-top:20px;color:var(--faint);font-size:13px}
    .crumbs a{color:var(--muted)}
    .section{padding:var(--section) 0}
    .section-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:25px}
    .section-heading p{max-width:510px;margin:0;color:var(--muted);font-size:14px}
    .glass{
      border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--panel);
      box-shadow:var(--shadow);backdrop-filter:blur(18px)
    }
    .filter-panel{padding:22px}
    .filter-row{display:grid;grid-template-columns:1.4fr .75fr .75fr auto;gap:12px}
    .field{position:relative}
    .field label{display:block;margin:0 0 7px;color:var(--faint);font-size:12px}
    .field input,.field select{
      width:100%;height:44px;padding:0 14px;border:1px solid var(--line);border-radius:12px;
      color:var(--text);background:rgba(7,18,43,.72);outline:none
    }
    .field input::placeholder{color:#6d82a8}
    .field input:focus,.field select:focus{border-color:var(--cyan);box-shadow:0 0 0 4px rgba(72,217,255,.1)}
    select option{background:#101f40;color:#fff}
    .filter-actions{display:flex;align-items:end;gap:8px}
    .filter-actions .btn-glow{height:44px;padding:0 17px;border:0;cursor:pointer}
    .filter-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:17px;padding-top:17px;border-top:1px solid rgba(133,169,232,.12)}
    .tag{cursor:pointer}
    .tag:hover,.tag.active{color:#071225;border-color:var(--cyan);background:var(--cyan)}
    .featured{display:grid;grid-template-columns:1.05fr .95fr;overflow:hidden}
    .feature-visual{
      min-height:325px;position:relative;display:flex;align-items:end;padding:25px;
      background:
        linear-gradient(0deg,rgba(5,13,31,.92),transparent 62%),
        radial-gradient(circle at 70% 28%,rgba(167,123,255,.5),transparent 23%),
        linear-gradient(135deg,#142f63,#101638 55%,#311a56)
    }
    .feature-visual::before{
      content:"";position:absolute;inset:25px;border:1px solid rgba(150,207,255,.25);border-radius:18px;
      background:repeating-linear-gradient(90deg,transparent 0 28px,rgba(120,190,255,.07) 29px 30px);
    }
    .play-disc{position:absolute;left:50%;top:43%;transform:translate(-50%,-50%);width:66px;height:66px;border:1px solid rgba(255,255,255,.5);border-radius:50%;display:grid;place-items:center;background:rgba(7,13,29,.4);box-shadow:0 0 30px rgba(72,217,255,.3)}
    .play-disc::after{content:"";margin-left:5px;border-top:10px solid transparent;border-bottom:10px solid transparent;border-left:15px solid var(--cyan)}
    .visual-meta{position:relative;z-index:1}
    .visual-meta strong{display:block;margin-top:10px;font-size:22px}
    .feature-copy{padding:32px}
    .feature-copy p{color:var(--muted);margin:15px 0 20px}
    .meta-line{display:flex;gap:10px;flex-wrap:wrap;color:var(--faint);font-size:13px;margin-bottom:23px}
    .content-list{display:grid;gap:12px}
    .content-item{
      display:grid;grid-template-columns:178px 1fr auto;gap:20px;align-items:center;padding:14px;
      border:1px solid var(--line);border-radius:18px;background:rgba(16,30,61,.58);
      transition:.22s ease
    }
    .content-item:hover{border-color:rgba(72,217,255,.6);transform:translateY(-2px);box-shadow:0 12px 28px rgba(0,0,0,.2)}
    .thumb{
      height:104px;position:relative;overflow:hidden;border-radius:12px;
      background:linear-gradient(135deg,#17386e,#24214c 55%,#55285e)
    }
    .thumb::before{content:"";position:absolute;inset:0;background:linear-gradient(125deg,transparent 35%,rgba(72,217,255,.22),transparent 65%)}
    .thumb .play-mini{position:absolute;left:50%;top:50%;width:32px;height:32px;transform:translate(-50%,-50%);border-radius:50%;background:rgba(7,13,29,.7);border:1px solid rgba(255,255,255,.45)}
    .play-mini::after{content:"";position:absolute;left:12px;top:8px;border-top:7px solid transparent;border-bottom:7px solid transparent;border-left:10px solid var(--cyan)}
    .item-info p{margin:8px 0 5px;color:var(--muted);font-size:14px;line-height:1.65}
    .item-meta{color:var(--faint);font-size:12px}
    .item-action{white-space:nowrap}
    .item-action a{display:inline-flex;padding:9px 14px;border:1px solid rgba(104,207,255,.4);border-radius:10px;font-size:13px}
    .item-action a:hover{background:rgba(72,217,255,.12);border-color:var(--cyan)}
    .topic-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .topic-card{position:relative;min-height:174px;padding:22px;overflow:hidden}
    .topic-card::after{content:"";position:absolute;right:-30px;bottom:-45px;width:140px;height:140px;border-radius:50%;background:rgba(167,123,255,.18);filter:blur(8px)}
    .topic-card:nth-child(2)::after{background:rgba(72,217,255,.15)}
    .topic-card:nth-child(3)::after{background:rgba(255,123,189,.15)}
    .topic-card p{color:var(--muted);font-size:14px;margin:11px 0 18px;max-width:250px}
    .topic-card a{font-size:13px;font-weight:700}
    .faq-list{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:rgba(16,30,61,.5)}
    .accordion-item{color:var(--text);background:transparent;border-color:var(--line)}
    .accordion-button{padding:20px 23px;color:var(--text);background:transparent;font-weight:700;box-shadow:none}
    .accordion-button:not(.collapsed){color:var(--cyan);background:rgba(72,217,255,.06);box-shadow:none}
    .accordion-button::after{filter:invert(1) brightness(2);opacity:.7}
    .accordion-body{padding:0 23px 21px;color:var(--muted);font-size:14px}
    .cta{
      display:flex;align-items:center;justify-content:space-between;gap:20px;padding:28px 32px;
      border:1px solid rgba(72,217,255,.28);border-radius:22px;
      background:linear-gradient(110deg,rgba(19,53,96,.86),rgba(23,25,66,.7));box-shadow:0 0 32px rgba(72,217,255,.08)
    }
    .cta p{margin:7px 0 0;color:var(--muted);font-size:14px}
    .site-footer{padding:54px 0 24px;border-top:1px solid rgba(133,169,232,.13);background:rgba(5,10,24,.7)}
    .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:38px}
    .footer-note{max-width:330px;color:var(--muted);font-size:14px}
    .footer-title{margin-bottom:14px;color:var(--text);font-size:14px;font-weight:700}
    .footer-links{list-style:none;padding:0;margin:0;display:grid;gap:8px}
    .footer-links a{color:var(--muted);font-size:13px}
    .footer-links a:hover{color:var(--cyan)}
    .copyright{display:flex;justify-content:space-between;gap:15px;margin-top:42px;padding-top:18px;border-top:1px solid rgba(133,169,232,.12);color:var(--faint);font-size:12px}
    @media(max-width:992px){
      .filter-row{grid-template-columns:1fr 1fr}.filter-actions{align-items:center}
      .featured{grid-template-columns:1fr}.feature-visual{min-height:270px}
      .content-item{grid-template-columns:145px 1fr}.item-action{grid-column:2}
    }
    @media(max-width:768px){
      .site-container{width:min(var(--container),calc(100% - 32px))}
      .top-row{flex-wrap:wrap;gap:14px}.search-box{order:3;flex-basis:100%;margin:0;max-width:none}
      .page-head{padding:46px 0 32px}.section{padding:54px 0}
      .section-heading{display:block}.section-heading p{margin-top:10px}
      .topic-strip{grid-template-columns:1fr}
      .cta{display:block;padding:24px}.cta .btn-glow{margin-top:18px}
      .footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}
    }
    @media(max-width:576px){
      h1{font-size:34px}.lead{font-size:15px}
      .filter-panel{padding:16px}.filter-row{grid-template-columns:1fr}
      .filter-actions{display:block}.filter-actions .btn-glow{width:100%;margin-top:4px}
      .featured{border-radius:18px}.feature-copy{padding:23px}.feature-visual{min-height:230px}
      .content-item{display:block;padding:12px}.thumb{height:145px;margin-bottom:15px}.item-action{margin-top:12px}
      .item-action a{width:100%;justify-content:center}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}
      .copyright{display:block}.copyright span{display:block;margin-top:6px}
    }
    @media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}