/* roulang page: index */
:root {
      --ink: #101416;
      --panel: #171c1d;
      --panel-2: #202728;
      --paper: #f2f3ef;
      --muted: #6c7573;
      --line: #d9ddda;
      --line-dark: rgba(255,255,255,.14);
      --signal: #c7f36b;
      --signal-dark: #92bd38;
      --amber: #f3b45b;
      --white: #ffffff;
      --radius: 7px;
      --shadow: 0 18px 42px rgba(13,20,19,.12);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      background: var(--paper);
      color: var(--ink);
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
      line-height: 1.7;
      letter-spacing: 0;
      overflow-x: hidden;
    }
    a { color: inherit; text-decoration: none; }
    button, input { font: inherit; }
    button { cursor: pointer; }
    img { display: block; max-width: 100%; }
    .container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
    .eyebrow {
      display: inline-flex; align-items: center; gap: 8px;
      color: var(--signal-dark); font-size: 12px; font-weight: 800;
      letter-spacing: .08em;
    }
    .eyebrow::before { content: ""; width: 22px; height: 2px; background: currentColor; }
    .section { padding: 112px 0; }
    .section-head { display: flex; justify-content: space-between; align-items: end; gap: 32px; margin-bottom: 42px; }
    .section-head h2 { max-width: 620px; font-size: clamp(30px, 4vw, 48px); line-height: 1.13; letter-spacing: -.03em; }
    .section-head p { max-width: 420px; color: var(--muted); font-size: 15px; }
    .topline { height: 3px; background: var(--signal); }
    .site-header {
      position: sticky; top: 0; z-index: 30;
      background: rgba(242,243,239,.94); backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--line);
    }
    .nav { min-height: 76px; display: flex; align-items: center; gap: 28px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; min-width: 220px; font-weight: 900; font-size: 17px; letter-spacing: -.04em; }
    .brand-mark { width: 28px; height: 28px; display: grid; place-items: center; background: var(--ink); color: var(--signal); border-radius: 50%; font-size: 13px; position: relative; }
    .brand-mark::after { content: ""; position: absolute; width: 7px; height: 7px; right: -3px; top: -2px; background: var(--amber); border-radius: 50%; border: 2px solid var(--paper); }
    .nav-links { display: flex; align-items: center; gap: 8px; flex: 1; }
    .nav-links a { padding: 8px 13px; color: #4b5553; font-size: 14px; border-bottom: 2px solid transparent; transition: .2s ease; }
    .nav-links a:hover, .nav-links a.active { color: var(--ink); border-color: var(--signal-dark); }
    .nav-actions { display: flex; align-items: center; gap: 10px; }
    .search { display: flex; align-items: center; gap: 8px; height: 38px; width: 180px; padding: 0 12px; border: 1px solid var(--line); background: #fff; border-radius: 5px; }
    .search span { color: var(--muted); font-size: 15px; }
    .search input { min-width: 0; width: 100%; border: 0; outline: 0; background: transparent; font-size: 13px; }
    .btn { display: inline-flex; justify-content: center; align-items: center; gap: 8px; min-height: 44px; padding: 0 18px; border: 1px solid transparent; border-radius: var(--radius); font-size: 14px; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease; }
    .btn:hover { transform: translateY(-2px); }
    .btn:focus-visible, .search:focus-within, input:focus-visible { outline: 3px solid rgba(146,189,56,.36); outline-offset: 3px; }
    .btn-dark { background: var(--ink); color: white; }
    .btn-dark:hover { box-shadow: 0 8px 20px rgba(16,20,22,.2); }
    .btn-signal { background: var(--signal); color: var(--ink); }
    .btn-signal:hover { background: #d9ff8a; box-shadow: 0 8px 22px rgba(146,189,56,.25); }
    .btn-ghost { background: transparent; border-color: var(--line); color: var(--ink); }
    .btn-ghost:hover { border-color: var(--ink); background: white; }
    .mobile-toggle { display: none; border: 0; background: transparent; font-size: 24px; }
    .hero { position: relative; min-height: 670px; display: flex; align-items: center; background: var(--ink); color: white; overflow: hidden; }
    .hero::before { content: ""; position: absolute; inset: 0; opacity: .22; background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px); background-size: 42px 42px; mask-image: linear-gradient(90deg, black, transparent 76%); }
    .hero::after { content: ""; position: absolute; right: -10%; bottom: -30%; width: 60%; height: 80%; border: 1px solid rgba(199,243,107,.2); transform: rotate(-18deg); }
    .hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr .95fr; gap: 80px; align-items: center; }
    .hero-copy { max-width: 650px; }
    .hero .eyebrow { color: var(--signal); }
    .hero h1 { margin: 20px 0 24px; max-width: 720px; font-size: clamp(42px, 6vw, 78px); line-height: 1.04; letter-spacing: -.06em; }
    .hero p { max-width: 590px; color: #c4cecb; font-size: 17px; line-height: 1.9; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
    .hero-stats { display: flex; flex-wrap: wrap; gap: 30px; margin-top: 48px; }
    .hero-stat strong { display: block; color: var(--signal); font-size: 25px; line-height: 1; }
    .hero-stat span { display: block; margin-top: 7px; color: #9ca9a5; font-size: 12px; }
    .hero-console { position: relative; border: 1px solid rgba(255,255,255,.18); background: #1a2121; padding: 17px; box-shadow: 25px 30px 0 rgba(199,243,107,.08); }
    .console-top { display: flex; justify-content: space-between; padding-bottom: 15px; border-bottom: 1px solid var(--line-dark); color: #98a39f; font-size: 11px; }
    .console-light { color: var(--signal); }
    .console-feature { min-height: 178px; margin: 17px 0; padding: 22px; display: flex; flex-direction: column; justify-content: end; background: linear-gradient(135deg, #34413d, #111716 70%); position: relative; overflow: hidden; }
    .console-feature::before { content: "91"; position: absolute; right: 14px; top: -25px; color: rgba(199,243,107,.13); font-size: 150px; font-weight: 900; line-height: 1; }
    .console-feature small { color: var(--signal); font-size: 11px; }
    .console-feature h3 { position: relative; margin-top: 7px; font-size: 24px; }
    .console-list { display: grid; gap: 9px; }
    .console-item { display: grid; grid-template-columns: 46px 1fr auto; gap: 11px; align-items: center; padding: 10px; border: 1px solid var(--line-dark); }
    .thumb { height: 34px; background: #38423e; border-left: 3px solid var(--signal); }
    .console-item b { font-size: 13px; font-weight: 700; }
    .console-item span { color: #99a49f; font-size: 11px; }
    .console-item em { color: var(--signal); font-size: 11px; font-style: normal; }
    .pain { background: #fff; }
    .pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .pain-card { min-height: 220px; padding: 28px; border: 1px solid var(--line); background: #fff; transition: .25s ease; }
    .pain-card:hover { transform: translateY(-5px); border-color: var(--signal-dark); box-shadow: var(--shadow); }
    .index { display: flex; justify-content: space-between; color: var(--signal-dark); font-size: 12px; font-weight: 900; }
    .pain-card h3 { margin: 52px 0 10px; font-size: 21px; }
    .pain-card p { color: var(--muted); font-size: 14px; }
    .solution { background: #e6e9e4; }
    .solution-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; align-items: start; }
    .solution-intro h2 { margin-top: 18px; font-size: clamp(31px, 4vw, 50px); line-height: 1.13; letter-spacing: -.04em; }
    .solution-intro p { margin-top: 22px; color: var(--muted); }
    .solution-list { border-top: 1px solid #bbc3bd; }
    .solution-row { display: grid; grid-template-columns: 45px 1fr 28px; gap: 18px; align-items: start; padding: 24px 0; border-bottom: 1px solid #bbc3bd; }
    .solution-row .num { color: var(--signal-dark); font-size: 13px; font-weight: 900; }
    .solution-row h3 { font-size: 20px; }
    .solution-row p { margin-top: 5px; color: var(--muted); font-size: 14px; }
    .solution-row .arrow { color: var(--signal-dark); font-size: 20px; transition: .2s; }
    .solution-row:hover .arrow { transform: translateX(5px); }
    .results { background: var(--panel); color: white; }
    .results .section-head p { color: #aab5b1; }
    .results .eyebrow { color: var(--signal); }
    .result-grid { display: grid; grid-template-columns: 1.2fr .8fr .8fr .8fr; border-top: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); }
    .result-main, .result-stat { padding: 35px 24px; border-right: 1px solid var(--line-dark); }
    .result-main strong { display: block; color: var(--signal); font-size: 54px; line-height: 1; }
    .result-main span, .result-stat span { display: block; margin-top: 12px; color: #aab5b1; font-size: 13px; }
    .result-stat strong { font-size: 30px; line-height: 1; }
    .result-bar { height: 5px; margin-top: 24px; background: #343e3d; }
    .result-bar i { display: block; width: 82%; height: 100%; background: var(--signal); }
    .testimonials { background: #fff; }
    .quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .quote-card { padding: 28px; border: 1px solid var(--line); }
    .quote-mark { color: var(--signal-dark); font-size: 36px; line-height: .8; }
    .quote-card blockquote { min-height: 92px; margin: 22px 0 25px; font-size: 17px; line-height: 1.65; }
    .person { display: flex; align-items: center; gap: 11px; padding-top: 17px; border-top: 1px solid var(--line); }
    .avatar { width: 35px; height: 35px; display: grid; place-items: center; background: var(--ink); color: var(--signal); border-radius: 50%; font-weight: 800; }
    .person b { display: block; font-size: 13px; }
    .person span { display: block; color: var(--muted); font-size: 11px; }
    .stars { margin-left: auto; color: var(--amber); font-size: 12px; }
    .faq { background: #f0f2ed; }
    .faq-list { max-width: 850px; margin: 0 auto; border-top: 1px solid #bdc5bf; }
    details { border-bottom: 1px solid #bdc5bf; }
    summary { display: flex; justify-content: space-between; gap: 20px; padding: 22px 0; list-style: none; cursor: pointer; font-weight: 800; }
    summary::-webkit-details-marker { display: none; }
    summary::after { content: "+"; color: var(--signal-dark); font-size: 22px; font-weight: 400; }
    details[open] summary::after { content: "−"; }
    details p { max-width: 700px; padding: 0 40px 23px 0; color: var(--muted); font-size: 14px; }
    .cta { padding: 88px 0; background: var(--signal); }
    .cta-inner { display: flex; justify-content: space-between; align-items: center; gap: 40px; }
    .cta h2 { max-width: 600px; font-size: clamp(30px, 4vw, 50px); line-height: 1.12; letter-spacing: -.04em; }
    .cta p { margin-top: 12px; color: #3e5123; font-size: 14px; }
    .cta-actions { display: flex; flex-wrap: wrap; gap: 10px; }
    .cta .btn-dark:hover { background: #29302f; }
    footer { padding: 58px 0 26px; background: var(--ink); color: white; }
    .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 50px; }
    .footer-brand p { max-width: 270px; margin-top: 16px; color: #9ba6a2; font-size: 13px; }
    footer h3 { margin-bottom: 15px; color: var(--signal); font-size: 13px; }
    footer li { margin: 8px 0; color: #a9b2af; font-size: 13px; }
    footer li a:hover { color: var(--signal); }
    .footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 20px; border-top: 1px solid var(--line-dark); color: #78837f; font-size: 12px; }
    .reveal { animation: rise .7s ease both; }
    @keyframes rise { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: none; } }
    @media (max-width: 1024px) {
      .hero-inner { gap: 40px; }
      .brand { min-width: auto; }
      .search { width: 145px; }
      .solution-layout { gap: 35px; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 34px, 620px); }
      .nav { min-height: 68px; justify-content: space-between; }
      .nav-links, .nav-actions { display: none; }
      .mobile-toggle { display: block; }
      .hero { min-height: auto; padding: 90px 0 80px; }
      .hero-inner, .solution-layout { grid-template-columns: 1fr; }
      .hero h1 { font-size: clamp(42px, 12vw, 64px); }
      .hero-console { max-width: 540px; }
      .section { padding: 78px 0; }
      .section-head, .cta-inner { display: block; }
      .section-head p { margin-top: 18px; }
      .pain-grid, .quote-grid { grid-template-columns: 1fr; }
      .pain-card { min-height: auto; }
      .pain-card h3 { margin-top: 35px; }
      .result-grid { grid-template-columns: 1fr 1fr; }
      .result-main { grid-column: span 2; border-bottom: 1px solid var(--line-dark); }
      .result-stat:nth-child(3) { border-right: 0; }
      .cta-actions { margin-top: 28px; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 520px) {
      .container { width: calc(100% - 30px); }
      .brand { font-size: 15px; }
      .hero p { font-size: 15px; }
      .hero-actions .btn { width: 100%; }
      .hero-stats { gap: 18px; }
      .solution-row { grid-template-columns: 30px 1fr 18px; gap: 10px; }
      .result-grid { grid-template-columns: 1fr; }
      .result-main { grid-column: auto; border-right: 0; }
      .result-stat { border-right: 0; border-top: 1px solid var(--line-dark); }
      .footer-grid { grid-template-columns: 1fr; gap: 25px; }
      .footer-bottom { display: block; }
      .footer-bottom span { display: block; margin-top: 7px; }
    }

/* roulang page: category1 */
:root {
      --bg: #0b0d0c;
      --bg-soft: #111411;
      --panel: #151915;
      --panel-2: #1b201b;
      --line: rgba(214, 225, 211, .14);
      --line-strong: rgba(174, 255, 92, .34);
      --text: #f3f6f0;
      --muted: #aab3a5;
      --weak: #717a70;
      --accent: #a6ff3f;
      --accent-2: #ffb23f;
      --danger: #ff5c4a;
      --bluegray: #8da0a1;
      --shadow: 0 24px 80px rgba(0, 0, 0, .38);
      --radius: 8px;
      --radius-sm: 5px;
      --container: 1180px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      min-height: 100vh;
      color: var(--text);
      background:
        radial-gradient(circle at 18% 12%, rgba(166, 255, 63, .08), transparent 28%),
        linear-gradient(rgba(255,255,255,.018) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.018) 1px, transparent 1px),
        var(--bg);
      background-size: auto, 44px 44px, 44px 44px, auto;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
      line-height: 1.65;
      letter-spacing: 0;
    }

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

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

    button, input {
      font: inherit;
    }

    button {
      cursor: pointer;
    }

    ::selection {
      background: rgba(166, 255, 63, .28);
      color: #fff;
    }

    .container {
      width: min(var(--container), calc(100% - 40px));
      margin-inline: auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      border-bottom: 1px solid var(--line);
      background: rgba(11, 13, 12, .88);
      backdrop-filter: blur(18px);
    }

    .nav-shell {
      height: 74px;
      display: flex;
      align-items: center;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      min-width: max-content;
      font-weight: 800;
      color: var(--text);
      letter-spacing: 0;
    }

    .brand-mark {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      border: 1px solid var(--line-strong);
      border-radius: var(--radius-sm);
      color: #071006;
      background: linear-gradient(135deg, var(--accent), #d8ff92);
      box-shadow: 0 0 24px rgba(166, 255, 63, .22);
      font-weight: 900;
      line-height: 1;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-left: 8px;
      padding: 5px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, .025);
    }

    .nav-links a {
      display: inline-flex;
      align-items: center;
      min-height: 36px;
      padding: 0 14px;
      border-radius: var(--radius-sm);
      color: var(--muted);
      font-size: 14px;
      font-weight: 650;
      transition: color .2s ease, background .2s ease, transform .2s ease;
    }

    .nav-links a:hover,
    .nav-links a:focus-visible {
      color: var(--text);
      background: rgba(255, 255, 255, .07);
      outline: none;
      transform: translateY(-1px);
    }

    .nav-links a.active {
      color: #071006;
      background: var(--accent);
    }

    .nav-actions {
      margin-left: auto;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .search-box {
      width: 240px;
      height: 40px;
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 0 12px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, .035);
      color: var(--muted);
      transition: border-color .2s ease, background .2s ease;
    }

    .search-box:focus-within {
      border-color: var(--line-strong);
      background: rgba(166, 255, 63, .05);
    }

    .search-box input {
      width: 100%;
      border: 0;
      outline: 0;
      color: var(--text);
      background: transparent;
      font-size: 14px;
    }

    .search-box input::placeholder {
      color: var(--weak);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 42px;
      padding: 0 16px;
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      color: var(--text);
      background: rgba(255, 255, 255, .045);
      font-weight: 750;
      font-size: 14px;
      transition: transform .2s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease, color .2s ease;
      white-space: nowrap;
    }

    .btn:hover,
    .btn:focus-visible {
      transform: translateY(-2px);
      border-color: rgba(255, 255, 255, .28);
      background: rgba(255, 255, 255, .08);
      outline: none;
    }

    .btn-primary {
      border-color: var(--accent);
      color: #071006;
      background: var(--accent);
      box-shadow: 0 0 0 1px rgba(166, 255, 63, .18), 0 14px 34px rgba(166, 255, 63, .16);
    }

    .btn-primary:hover,
    .btn-primary:focus-visible {
      background: #c0ff71;
      box-shadow: 0 0 0 1px rgba(166, 255, 63, .34), 0 18px 44px rgba(166, 255, 63, .22);
    }

    .btn-ghost {
      color: var(--muted);
      background: transparent;
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      background: rgba(255, 255, 255, .04);
      color: var(--text);
    }

    .section {
      padding: 82px 0;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--accent);
      font-size: 13px;
      font-weight: 850;
      letter-spacing: 0;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 18px rgba(166, 255, 63, .8);
    }

    .page-hero {
      position: relative;
      padding: 76px 0 48px;
      overflow: hidden;
      border-bottom: 1px solid var(--line);
    }

    .page-hero::after {
      content: "";
      position: absolute;
      inset: auto 0 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(166, 255, 63, .55), transparent);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) 390px;
      gap: 42px;
      align-items: end;
    }

    h1 {
      max-width: 840px;
      margin: 14px 0 18px;
      font-size: clamp(38px, 6vw, 76px);
      line-height: .98;
      font-weight: 950;
      letter-spacing: 0;
    }

    .hero-copy {
      max-width: 720px;
      color: var(--muted);
      font-size: 17px;
    }

    .hero-tools {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }

    .vertical-preview {
      position: relative;
      min-height: 520px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background:
        linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.02)),
        var(--panel);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .vertical-preview::before {
      content: "";
      position: absolute;
      inset: 14px;
      border: 1px solid rgba(255, 255, 255, .08);
      border-radius: 6px;
      background:
        linear-gradient(90deg, transparent 49%, rgba(166,255,63,.16) 50%, transparent 51%),
        linear-gradient(0deg, transparent 49%, rgba(166,255,63,.08) 50%, transparent 51%);
      background-size: 42px 42px;
      opacity: .75;
    }

    .preview-screen {
      position: absolute;
      inset: 34px;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      gap: 14px;
      padding: 22px;
      border-radius: 6px;
      background:
        linear-gradient(180deg, rgba(11,13,12,.18), rgba(11,13,12,.86)),
        repeating-linear-gradient(135deg, rgba(166,255,63,.06) 0 1px, transparent 1px 12px);
    }

    .scan-line {
      position: absolute;
      left: 34px;
      right: 34px;
      top: 96px;
      height: 2px;
      background: var(--accent);
      opacity: .75;
      box-shadow: 0 0 18px rgba(166, 255, 63, .8);
      animation: scan 4s ease-in-out infinite;
    }

    @keyframes scan {
      0%, 100% { transform: translateY(0); opacity: .4; }
      50% { transform: translateY(240px); opacity: .9; }
    }

    .status-pill {
      width: fit-content;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 10px;
      border: 1px solid rgba(166, 255, 63, .28);
      border-radius: 999px;
      color: var(--accent);
      background: rgba(166, 255, 63, .08);
      font-size: 12px;
      font-weight: 800;
    }

    .preview-title {
      font-size: 26px;
      line-height: 1.15;
      font-weight: 950;
    }

    .preview-bars {
      display: grid;
      gap: 8px;
    }

    .preview-bars span {
      height: 8px;
      border-radius: 99px;
      background: rgba(255, 255, 255, .14);
      overflow: hidden;
    }

    .preview-bars span::after {
      content: "";
      display: block;
      height: 100%;
      width: var(--w);
      background: linear-gradient(90deg, var(--accent), var(--accent-2));
    }

    .filter-panel {
      margin-top: 34px;
      padding: 16px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, .035);
    }

    .filter-row {
      display: flex;
      align-items: center;
      gap: 12px;
      overflow-x: auto;
      padding-bottom: 2px;
    }

    .filter-label {
      min-width: max-content;
      color: var(--weak);
      font-size: 13px;
      font-weight: 800;
    }

    .chip {
      min-width: max-content;
      display: inline-flex;
      align-items: center;
      gap: 7px;
      min-height: 34px;
      padding: 0 12px;
      border: 1px solid var(--line);
      border-radius: 999px;
      color: var(--muted);
      background: rgba(255, 255, 255, .035);
      font-size: 13px;
      font-weight: 750;
      transition: color .2s ease, border-color .2s ease, background .2s ease;
    }

    .chip:hover,
    .chip.active {
      color: #071006;
      border-color: var(--accent);
      background: var(--accent);
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, .82fr) minmax(260px, .38fr);
      gap: 34px;
      align-items: end;
      margin-bottom: 30px;
    }

    .section-head h2 {
      margin: 8px 0 0;
      font-size: clamp(28px, 4vw, 46px);
      line-height: 1.08;
      font-weight: 950;
      letter-spacing: 0;
    }

    .section-head p {
      color: var(--muted);
      margin: 0;
    }

    .summary-strip {
      display: grid;
      grid-template-columns: 1.25fr .75fr .75fr;
      gap: 14px;
      margin-top: 26px;
    }

    .summary-card {
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: linear-gradient(180deg, rgba(255,255,255,.055), rgba(255,255,255,.025));
      transition: transform .22s ease, border-color .22s ease;
    }

    .summary-card:hover {
      transform: translateY(-3px);
      border-color: rgba(166, 255, 63, .32);
    }

    .summary-card strong {
      display: block;
      margin-bottom: 8px;
      font-size: 20px;
      line-height: 1.25;
    }

    .summary-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .content-layout {
      display: grid;
      grid-template-columns: 260px minmax(0, 1fr);
      gap: 24px;
      align-items: start;
    }

    .side-filter {
      position: sticky;
      top: 96px;
      padding: 18px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(17, 20, 17, .82);
    }

    .side-filter h3 {
      margin: 0 0 14px;
      font-size: 16px;
      font-weight: 900;
    }

    .side-filter ul {
      display: grid;
      gap: 10px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .side-filter a {
      display: flex;
      justify-content: space-between;
      gap: 10px;
      padding: 11px 12px;
      border: 1px solid transparent;
      border-radius: var(--radius-sm);
      color: var(--muted);
      background: rgba(255, 255, 255, .025);
      font-size: 14px;
      transition: color .2s ease, border-color .2s ease, background .2s ease;
    }

    .side-filter a:hover,
    .side-filter a.active {
      color: var(--text);
      border-color: var(--line-strong);
      background: rgba(166, 255, 63, .07);
    }

    .cards-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
    }

    .topic-card {
      display: flex;
      flex-direction: column;
      min-height: 100%;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--panel);
      overflow: hidden;
      transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
    }

    .topic-card:hover {
      transform: translateY(-4px);
      border-color: rgba(166, 255, 63, .32);
      box-shadow: 0 18px 44px rgba(0, 0, 0, .28);
    }

    .thumb {
      position: relative;
      aspect-ratio: 16 / 10;
      border-bottom: 1px solid var(--line);
      background:
        linear-gradient(135deg, rgba(166,255,63,.14), transparent 42%),
        linear-gradient(45deg, rgba(255,178,63,.12), transparent 55%),
        #101310;
      overflow: hidden;
    }

    .thumb::before {
      content: "";
      position: absolute;
      inset: 16px;
      border: 1px solid rgba(255,255,255,.1);
      background:
        linear-gradient(90deg, transparent 48%, rgba(166,255,63,.24) 50%, transparent 52%),
        linear-gradient(0deg, transparent 48%, rgba(255,255,255,.08) 50%, transparent 52%);
      background-size: 34px 34px;
    }

    .thumb::after {
      content: attr(data-code);
      position: absolute;
      left: 14px;
      bottom: 12px;
      padding: 5px 8px;
      border: 1px solid rgba(166,255,63,.34);
      border-radius: 4px;
      color: var(--accent);
      background: rgba(0,0,0,.48);
      font-size: 12px;
      font-weight: 900;
    }

    .topic-body {
      display: flex;
      flex-direction: column;
      flex: 1;
      padding: 16px;
    }

    .topic-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 12px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 8px;
      border: 1px solid var(--line);
      border-radius: 999px;
      color: var(--muted);
      background: rgba(255,255,255,.035);
      font-size: 12px;
      font-weight: 800;
    }

    .badge.hot {
      color: var(--accent-2);
      border-color: rgba(255,178,63,.36);
      background: rgba(255,178,63,.08);
    }

    .topic-card h3 {
      margin: 0 0 8px;
      font-size: 18px;
      line-height: 1.32;
      font-weight: 900;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .topic-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .card-actions {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-top: auto;
      padding-top: 18px;
    }

    .heat {
      color: var(--weak);
      font-size: 12px;
      font-weight: 800;
    }

    .mini-btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 34px;
      padding: 0 11px;
      border: 1px solid rgba(166,255,63,.28);
      border-radius: var(--radius-sm);
      color: var(--accent);
      background: rgba(166,255,63,.06);
      font-size: 13px;
      font-weight: 850;
      transition: transform .2s ease, background .2s ease;
    }

    .mini-btn:hover,
    .mini-btn:focus-visible {
      transform: translateY(-1px);
      background: rgba(166,255,63,.12);
      outline: none;
    }

    .steps {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 18px;
      align-items: stretch;
    }

    .step-panel,
    .check-panel {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255,255,255,.035);
      padding: 24px;
    }

    .step-list {
      display: grid;
      gap: 14px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .step-list li {
      display: grid;
      grid-template-columns: 44px 1fr;
      gap: 14px;
      padding: 14px;
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      background: rgba(0,0,0,.16);
    }

    .step-no {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 4px;
      color: #071006;
      background: var(--accent);
      font-weight: 950;
    }

    .step-list strong {
      display: block;
      margin-bottom: 2px;
      font-weight: 900;
    }

    .step-list span {
      color: var(--muted);
      font-size: 14px;
    }

    .check-grid {
      display: grid;
      gap: 12px;
      margin-top: 18px;
    }

    .check-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 13px 0;
      border-bottom: 1px solid var(--line);
      color: var(--muted);
    }

    .check-item:last-child {
      border-bottom: 0;
    }

    .check-item b {
      color: var(--text);
    }

    .progress {
      width: 110px;
      height: 7px;
      border-radius: 99px;
      background: rgba(255,255,255,.1);
      overflow: hidden;
    }

    .progress span {
      display: block;
      width: var(--p);
      height: 100%;
      background: linear-gradient(90deg, var(--accent), var(--accent-2));
    }

    .pager {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      margin-top: 30px;
      padding: 18px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255,255,255,.025);
    }

    .pager a,
    .pager span {
      min-width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      color: var(--muted);
      font-weight: 850;
      transition: color .2s ease, border-color .2s ease, background .2s ease;
    }

    .pager a:hover,
    .pager span.active {
      color: #071006;
      border-color: var(--accent);
      background: var(--accent);
    }

    .faq-list {
      display: grid;
      gap: 12px;
      max-width: 900px;
    }

    .faq-item {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255,255,255,.035);
      overflow: hidden;
    }

    .faq-item summary {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding: 18px 20px;
      cursor: pointer;
      color: var(--text);
      font-weight: 900;
      list-style: none;
    }

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

    .faq-item summary::after {
      content: "+";
      color: var(--accent);
      font-size: 22px;
      line-height: 1;
    }

    .faq-item[open] summary::after {
      content: "−";
    }

    .faq-item p {
      margin: 0;
      padding: 0 20px 18px;
      color: var(--muted);
    }

    .cta-band {
      position: relative;
      padding: 38px;
      border: 1px solid rgba(166,255,63,.34);
      border-radius: var(--radius);
      background:
        linear-gradient(135deg, rgba(166,255,63,.16), transparent 42%),
        linear-gradient(90deg, rgba(255,178,63,.12), transparent 64%),
        #10130f;
      overflow: hidden;
    }

    .cta-band::after {
      content: "";
      position: absolute;
      inset: 0;
      background: repeating-linear-gradient(90deg, transparent 0 28px, rgba(255,255,255,.03) 28px 29px);
      pointer-events: none;
    }

    .cta-inner {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 24px;
      align-items: center;
    }

    .cta-band h2 {
      margin: 0 0 10px;
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.08;
      font-weight: 950;
    }

    .cta-band p {
      margin: 0;
      color: var(--muted);
    }

    .trust-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 18px;
    }

    footer {
      padding: 54px 0 28px;
      border-top: 1px solid var(--line);
      background: #080a09;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr .7fr .7fr .9fr;
      gap: 28px;
    }

    .footer-brand p,
    footer li {
      color: var(--muted);
      font-size: 14px;
    }

    .footer-brand p {
      max-width: 360px;
      margin: 14px 0 0;
    }

    footer h3 {
      margin: 0 0 12px;
      color: var(--text);
      font-size: 15px;
      font-weight: 900;
    }

    footer ul {
      display: grid;
      gap: 8px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    footer a {
      color: var(--muted);
      transition: color .2s ease;
    }

    footer a:hover,
    footer a:focus-visible {
      color: var(--accent);
      outline: none;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      margin-top: 34px;
      padding-top: 22px;
      border-top: 1px solid var(--line);
      color: var(--weak);
      font-size: 13px;
    }

    .reveal {
      animation: fadeUp .7s ease both;
    }

    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(18px); }
      to { opacity: 1; transform: translateY(0); }
    }

    @media (max-width: 1100px) {
      .nav-actions .btn-ghost {
        display: none;
      }

      .search-box {
        width: 190px;
      }

      .hero-grid,
      .steps {
        grid-template-columns: 1fr;
      }

      .vertical-preview {
        min-height: 430px;
      }

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

      .side-filter {
        position: static;
      }

      .side-filter ul {
        grid-template-columns: repeat(4, minmax(0, 1fr));
      }

      .cards-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 820px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .nav-shell {
        height: auto;
        min-height: 68px;
        flex-wrap: wrap;
        padding: 12px 0;
      }

      .menu-toggle {
        display: grid;
        place-items: center;
        margin-left: auto;
      }

      .nav-links {
        order: 4;
        width: 100%;
        display: none;
        margin: 0;
        overflow-x: auto;
      }

      .nav-links.open {
        display: flex;
      }

      .nav-actions {
        order: 3;
        width: 100%;
        margin-left: 0;
        display: none;
        grid-template-columns: 1fr auto;
      }

      .nav-actions.open {
        display: grid;
      }

      .search-box {
        width: 100%;
      }

      .page-hero {
        padding-top: 46px;
      }

      .section {
        padding: 58px 0;
      }

      .section-head,
      .summary-strip,
      .footer-grid,
      .cta-inner {
        grid-template-columns: 1fr;
      }

      .side-filter ul {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .footer-bottom {
        flex-direction: column;
      }
    }

    @media (max-width: 560px) {
      h1 {
        font-size: 40px;
      }

      .brand span:last-child {
        max-width: 190px;
        white-space: normal;
        line-height: 1.15;
      }

      .hero-tools,
      .cta-inner > div:last-child {
        display: grid;
        width: 100%;
      }

      .btn {
        width: 100%;
      }

      .vertical-preview {
        min-height: 380px;
      }

      .filter-panel {
        margin-top: 24px;
      }

      .side-filter ul,
      .cards-grid {
        grid-template-columns: 1fr;
      }

      .step-list li {
        grid-template-columns: 38px 1fr;
      }

      .cta-band {
        padding: 26px;
      }

      .pager {
        overflow-x: auto;
        justify-content: flex-start;
      }
    }