/* roulang page: index */
:root {
      --ink: #171512;
      --ink-soft: #24211d;
      --paper: #f3eee6;
      --paper-deep: #e7ded2;
      --card: #211f1b;
      --card-light: #2c2924;
      --text: #f7f1e9;
      --muted: #aaa197;
      --dark-text: #28241f;
      --dark-muted: #756d64;
      --ember: #d96b45;
      --ember-light: #f08a5f;
      --line: rgba(255,255,255,.14);
      --dark-line: rgba(40,36,31,.15);
      --radius: 20px;
      --shadow: 0 18px 50px rgba(21,17,13,.16);
      --ease: 240ms cubic-bezier(.2,.8,.2,1);
      --max: 1220px;
    }

    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--text);
      background: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; }
    button, input, textarea { font: inherit; }
    button { cursor: pointer; }
    img { display: block; max-width: 100%; }
    :focus-visible { outline: 3px solid var(--ember-light); outline-offset: 4px; }

    .container { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      color: var(--ember-light);
      font-size: 12px;
      font-weight: 700;
      letter-spacing: .14em;
      text-transform: uppercase;
    }
    .eyebrow::before {
      content: "";
      width: 24px;
      height: 1px;
      background: var(--ember);
    }
    .section { padding: 108px 0; }
    .section-light { color: var(--dark-text); background: var(--paper); }
    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 30px;
      margin-bottom: 46px;
    }
    .section-title {
      max-width: 700px;
      margin: 14px 0 0;
      font-size: clamp(32px, 4vw, 56px);
      line-height: 1.12;
      letter-spacing: -.055em;
      font-weight: 800;
    }
    .section-copy {
      max-width: 500px;
      margin: 0;
      color: var(--muted);
      font-size: 16px;
    }
    .section-light .section-copy { color: var(--dark-muted); }

    .topbar {
      background: var(--ink);
      border-bottom: 1px solid var(--line);
      position: relative;
      z-index: 10;
    }
    .brand-row {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 13px;
      font-weight: 800;
      letter-spacing: -.035em;
      font-size: 19px;
    }
    .brand-mark {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      color: var(--ink);
      background: var(--ember);
      border-radius: 10px 10px 10px 3px;
      font-size: 14px;
      font-weight: 900;
    }
    .brand small {
      display: block;
      color: var(--muted);
      font-size: 10px;
      font-weight: 500;
      letter-spacing: .08em;
      margin-top: -3px;
    }
    .brand-actions { display: flex; align-items: center; gap: 11px; }
    .mini-link {
      color: var(--muted);
      font-size: 14px;
      padding: 9px 12px;
      transition: color var(--ease);
    }
    .mini-link:hover { color: var(--text); }
    .channel-row {
      border-top: 1px solid rgba(255,255,255,.08);
      overflow-x: auto;
      scrollbar-width: none;
    }
    .channel-row::-webkit-scrollbar { display: none; }
    .channel-nav {
      min-height: 52px;
      display: flex;
      align-items: center;
      gap: 8px;
      white-space: nowrap;
    }
    .channel {
      position: relative;
      color: var(--muted);
      font-size: 13px;
      padding: 13px 15px;
      transition: color var(--ease), background var(--ease);
    }
    .channel::after {
      content: "";
      position: absolute;
      left: 15px;
      right: 15px;
      bottom: 0;
      height: 2px;
      transform: scaleX(0);
      background: var(--ember);
      transition: transform var(--ease);
    }
    .channel:hover, .channel.active { color: var(--text); background: rgba(255,255,255,.035); }
    .channel.active::after { transform: scaleX(1); }

    .hero {
      position: relative;
      min-height: 650px;
      display: flex;
      align-items: center;
      overflow: hidden;
      background:
        radial-gradient(circle at 84% 22%, rgba(217,107,69,.22), transparent 30%),
        linear-gradient(120deg, #171512 0%, #1c1915 54%, #29221c 100%);
    }
    .hero::before {
      content: "中文字幕";
      position: absolute;
      right: -4vw;
      bottom: -35px;
      color: rgba(255,255,255,.035);
      font-size: clamp(120px, 22vw, 300px);
      font-weight: 900;
      letter-spacing: -.1em;
      line-height: .8;
      pointer-events: none;
    }
    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(360px, .9fr);
      align-items: center;
      gap: 70px;
      padding: 92px 0 105px;
    }
    .hero h1 {
      max-width: 780px;
      margin: 20px 0 25px;
      font-size: clamp(42px, 6.5vw, 82px);
      line-height: 1.06;
      letter-spacing: -.075em;
      font-weight: 900;
    }
    .hero h1 em { color: var(--ember-light); font-style: normal; }
    .hero-text {
      max-width: 640px;
      color: #c4b9ad;
      font-size: 18px;
      line-height: 1.9;
    }
    .hero-buttons { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 36px; }
    .btn {
      min-height: 48px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      padding: 0 20px;
      border: 1px solid transparent;
      border-radius: 11px;
      font-size: 14px;
      font-weight: 700;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), border-color var(--ease);
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:active { transform: translateY(0) scale(.98); }
    .btn-primary { color: #fffaf4; background: var(--ember); box-shadow: 0 9px 22px rgba(217,107,69,.22); }
    .btn-primary:hover { background: var(--ember-light); box-shadow: 0 13px 27px rgba(217,107,69,.3); }
    .btn-outline { color: var(--text); border-color: var(--line); background: rgba(255,255,255,.025); }
    .btn-outline:hover { border-color: var(--ember); background: rgba(217,107,69,.09); }
    .hero-points {
      display: flex;
      flex-wrap: wrap;
      gap: 22px;
      margin-top: 34px;
      color: var(--muted);
      font-size: 13px;
    }
    .hero-points span { display: inline-flex; align-items: center; gap: 8px; }
    .hero-points i { width: 6px; height: 6px; border-radius: 50%; background: var(--ember); }

    .hero-stage {
      min-height: 370px;
      padding: 24px;
      position: relative;
      border: 1px solid var(--line);
      border-radius: 26px;
      background: rgba(255,255,255,.045);
      box-shadow: var(--shadow);
      transform: rotate(2deg);
    }
    .stage-window {
      height: 240px;
      position: relative;
      overflow: hidden;
      border-radius: 17px;
      background:
        linear-gradient(145deg, rgba(217,107,69,.18), transparent 48%),
        #312a24;
    }
    .stage-window::before, .stage-window::after {
      content: "";
      position: absolute;
      border: 1px solid rgba(255,255,255,.15);
      border-radius: 50%;
    }
    .stage-window::before { width: 190px; height: 190px; right: -30px; top: -48px; }
    .stage-window::after { width: 110px; height: 110px; left: 30px; bottom: -45px; background: rgba(217,107,69,.25); }
    .stage-caption {
      position: absolute;
      left: 20px;
      right: 20px;
      bottom: 20px;
      color: #fff8ef;
      font-size: 20px;
      font-weight: 700;
      letter-spacing: -.04em;
    }
    .subtitle-line {
      position: absolute;
      left: 20px;
      right: 20px;
      bottom: 53px;
      height: 2px;
      background: var(--ember);
      box-shadow: 0 0 18px rgba(240,138,95,.7);
    }
    .stage-meta {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 16px;
      padding-top: 22px;
    }
    .stage-meta strong { display: block; font-size: 27px; letter-spacing: -.05em; }
    .stage-meta small { color: var(--muted); font-size: 12px; }
    .progress { width: 120px; height: 4px; margin-bottom: 8px; background: rgba(255,255,255,.14); }
    .progress span { display: block; width: 68%; height: 100%; background: var(--ember); }

    .metric-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      border-top: 1px solid var(--dark-line);
      border-bottom: 1px solid var(--dark-line);
    }
    .metric {
      min-height: 160px;
      padding: 30px 25px;
      border-right: 1px solid var(--dark-line);
    }
    .metric:last-child { border-right: 0; }
    .metric-number { color: var(--ember); font-size: 45px; line-height: 1; font-weight: 900; letter-spacing: -.07em; }
    .metric-label { margin-top: 14px; color: var(--dark-text); font-weight: 700; }
    .metric-note { color: var(--dark-muted); font-size: 12px; }

    .matrix {
      display: grid;
      grid-template-columns: 1.35fr .8fr .8fr;
      grid-template-rows: auto auto;
      gap: 16px;
    }
    .matrix-card {
      position: relative;
      min-height: 210px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      padding: 28px;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--card);
      transition: transform var(--ease), border-color var(--ease), box-shadow var(--ease);
    }
    .matrix-card:hover { transform: translateY(-5px); border-color: rgba(240,138,95,.6); box-shadow: var(--shadow); }
    .matrix-card.main-card { grid-row: span 2; min-height: 436px; background: linear-gradient(145deg, #382820, #211f1b 65%); }
    .matrix-card.wide-card { grid-column: span 2; min-height: 210px; }
    .matrix-card h3 { margin: 18px 0 8px; font-size: 26px; line-height: 1.2; letter-spacing: -.05em; }
    .matrix-card p { margin: 0; color: var(--muted); font-size: 14px; }
    .card-top { display: flex; justify-content: space-between; color: var(--ember-light); font-size: 12px; font-weight: 700; }
    .arrow { color: var(--ember-light); font-size: 24px; transition: transform var(--ease); }
    .matrix-card:hover .arrow { transform: translateX(5px); }
    .matrix-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 27px;
      padding: 0 10px;
      border: 1px solid var(--line);
      border-radius: 99px;
      color: #d7cbc0;
      font-size: 12px;
    }

    .compare-wrap {
      display: grid;
      grid-template-columns: 1fr 64px 1fr;
      align-items: stretch;
      gap: 18px;
    }
    .compare-card {
      padding: 32px;
      border-radius: var(--radius);
      border: 1px solid var(--dark-line);
      background: #ece4da;
    }
    .compare-card.highlight { color: #fff7ef; border-color: var(--ember); background: var(--ink-soft); }
    .compare-card h3 { margin: 0 0 22px; font-size: 25px; letter-spacing: -.05em; }
    .compare-card ul { display: grid; gap: 14px; padding: 0; margin: 0; list-style: none; }
    .compare-card li { display: flex; gap: 10px; color: var(--dark-muted); font-size: 14px; }
    .compare-card.highlight li { color: #c9beb3; }
    .compare-card li::before { content: "＋"; color: var(--ember); font-weight: 800; }
    .compare-mark { display: grid; place-items: center; align-self: center; width: 54px; height: 54px; border-radius: 50%; color: #fff; background: var(--ember); font-weight: 900; }

    .faq-list { display: grid; gap: 10px; max-width: 900px; }
    .faq-item { border-top: 1px solid var(--dark-line); }
    .faq-item:last-child { border-bottom: 1px solid var(--dark-line); }
    .faq-item summary { display: flex; justify-content: space-between; gap: 20px; padding: 22px 4px; color: var(--dark-text); font-size: 17px; font-weight: 700; cursor: pointer; list-style: none; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; color: var(--ember); font-size: 25px; font-weight: 400; transition: transform var(--ease); }
    .faq-item[open] summary::after { transform: rotate(45deg); }
    .faq-answer { max-width: 760px; padding: 0 48px 22px 4px; color: var(--dark-muted); font-size: 14px; }

    .form-shell {
      display: grid;
      grid-template-columns: .75fr 1.25fr;
      gap: 70px;
      align-items: start;
    }
    .form-shell h2 { margin: 14px 0 17px; font-size: clamp(34px, 4vw, 54px); line-height: 1.1; letter-spacing: -.06em; }
    .form-shell p { color: var(--muted); font-size: 15px; }
    .feedback-form { display: grid; gap: 17px; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
    .field { display: grid; gap: 8px; }
    .field label { color: #ddd1c6; font-size: 13px; font-weight: 700; }
    .field input, .field textarea { width: 100%; color: var(--text); background: #181613; border: 1px solid var(--line); border-radius: 10px; padding: 13px 14px; outline: none; transition: border-color var(--ease), box-shadow var(--ease); }
    .field input:focus, .field textarea:focus { border-color: var(--ember); box-shadow: 0 0 0 3px rgba(217,107,69,.16); }
    .field textarea { min-height: 110px; resize: vertical; }
    .form-note { color: var(--muted); font-size: 12px; }
    .success-message { display: none; color: #f3af8c; font-size: 13px; }
    .feedback-form.sent .success-message { display: block; }

    .updates {
      padding: 80px 0;
      color: var(--text);
      background: #201d19;
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }
    .update-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; align-items: start; }
    .update-list { display: grid; gap: 0; }
    .update-item { display: grid; grid-template-columns: 110px 1fr 24px; gap: 20px; align-items: center; padding: 20px 0; border-top: 1px solid var(--line); }
    .update-item:last-child { border-bottom: 1px solid var(--line); }
    .update-date { color: var(--ember-light); font-size: 12px; font-weight: 700; }
    .update-title { font-size: 15px; font-weight: 700; }
    .update-desc { color: var(--muted); font-size: 13px; }
    .update-arrow { color: var(--ember-light); }

    .safety {
      padding: 70px 0;
      background: var(--paper-deep);
      color: var(--dark-text);
    }
    .safety-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1px; background: var(--dark-line); border: 1px solid var(--dark-line); }
    .safety-card { padding: 28px; background: var(--paper-deep); }
    .safety-icon { width: 42px; height: 42px; display: grid; place-items: center; margin-bottom: 22px; color: var(--ember); border: 1px solid rgba(217,107,69,.45); border-radius: 12px; font-size: 20px; }
    .safety-card h3 { margin: 0 0 8px; font-size: 19px; }
    .safety-card p { margin: 0; color: var(--dark-muted); font-size: 13px; }

    footer { padding: 64px 0 28px; background: #11100e; border-top: 1px solid var(--line); }
    .footer-top { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 60px; padding-bottom: 55px; }
    .footer-brand { margin-bottom: 16px; }
    .footer-copy { max-width: 350px; color: var(--muted); font-size: 13px; }
    .footer-title { margin: 0 0 16px; color: #eee4da; font-size: 13px; font-weight: 800; }
    .footer-links { display: grid; gap: 9px; color: var(--muted); font-size: 13px; }
    .footer-links a { transition: color var(--ease); }
    .footer-links a:hover { color: var(--ember-light); }
    .footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 22px; border-top: 1px solid var(--line); color: #756d64; font-size: 12px; }

    @media (max-width: 1024px) {
      .hero-grid { gap: 35px; grid-template-columns: 1fr  .8fr; }
      .matrix { grid-template-columns: 1fr 1fr; }
      .matrix-card.main-card { grid-row: auto; min-height: 300px; }
      .matrix-card.wide-card { grid-column: span 2; }
      .form-shell { gap: 35px; }
    }
    @media (max-width: 768px) {
      .container { width: min(var(--max), calc(100% - 32px)); }
      .section { padding: 76px 0; }
      .brand-row { min-height: 64px; }
      .brand { font-size: 16px; }
      .brand small, .mini-link { display: none; }
      .hero-grid, .update-grid, .form-shell { grid-template-columns: 1fr; }
      .hero { min-height: auto; }
      .hero-grid { padding: 70px 0 80px; }
      .hero-stage { max-width: 560px; width: 100%; margin: 0 auto; transform: rotate(0); }
      .section-head { display: block; margin-bottom: 30px; }
      .section-copy { margin-top: 17px; }
      .metric-strip { grid-template-columns: repeat(2, 1fr); }
      .metric:nth-child(2) { border-right: 0; }
      .metric:nth-child(-n+2) { border-bottom: 1px solid var(--dark-line); }
      .compare-wrap { grid-template-columns: 1fr; }
      .compare-mark { margin: -5px auto; }
      .safety-grid { grid-template-columns: 1fr; }
      .footer-top { grid-template-columns: 1fr 1fr; gap: 35px; }
      .footer-top > :first-child { grid-column: span 2; }
      .footer-bottom { display: block; }
      .footer-bottom span { display: block; margin-top: 8px; }
    }
    @media (max-width: 520px) {
      .hero h1 { font-size: 43px; }
      .hero-text { font-size: 16px; }
      .hero-buttons .btn { width: 100%; }
      .metric { min-height: 135px; padding: 23px 17px; }
      .metric-number { font-size: 34px; }
      .matrix { display: block; }
      .matrix-card { min-height: 190px !important; margin-bottom: 12px; }
      .update-item { grid-template-columns: 75px 1fr 16px; gap: 10px; }
      .update-desc { display: none; }
      .footer-top { grid-template-columns: 1fr; }
      .footer-top > :first-child { grid-column: auto; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
    }

/* roulang page: category2 */
:root{
      --ink:#171512;--ink-soft:#24211d;--paper:#f3eee6;--paper-deep:#e7ded2;
      --card:#211f1b;--card-light:#2c2924;--text:#f7f1e9;--muted:#aaa197;
      --dark-text:#28241f;--dark-muted:#756d64;--ember:#d96b45;--ember-light:#f08a5f;
      --line:rgba(255,255,255,.14);--dark-line:rgba(40,36,31,.15);
      --radius:20px;--shadow:0 18px 50px rgba(21,17,13,.16);
      --ease:240ms cubic-bezier(.2,.8,.2,1);--max:1220px;
    }
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--dark-text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}.container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .topbar{background:var(--ink);color:var(--text);border-bottom:1px solid var(--line);position:relative;z-index:10}.brand-row{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;align-items:center;gap:13px;font-weight:800;letter-spacing:-.035em;font-size:19px}.brand-mark{width:34px;height:34px;display:grid;place-items:center;color:var(--ink);background:var(--ember);border-radius:10px 10px 10px 3px;font-size:14px;font-weight:900}.brand small{display:block;color:var(--muted);font-size:10px;font-weight:500;letter-spacing:.08em;margin-top:-3px}.brand-actions{display:flex;align-items:center;gap:11px}.mini-link{font-size:13px;color:var(--muted);transition:color var(--ease)}.mini-link:hover{color:var(--text)}.channel-row{border-top:1px solid rgba(255,255,255,.08);overflow-x:auto;scrollbar-width:none}.channel-row::-webkit-scrollbar{display:none}.channel-nav{min-height:52px;display:flex;align-items:center;gap:8px;white-space:nowrap}.channel{padding:8px 15px;border-radius:9px;color:var(--muted);font-size:13px;transition:color var(--ease),background var(--ease)}.channel:hover{color:var(--text);background:rgba(255,255,255,.06)}.channel.active{color:#fff;background:var(--ember)}.btn{min-height:48px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:0 20px;border:1px solid transparent;border-radius:11px;font-size:14px;font-weight:700;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease)}.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0) scale(.98)}.btn:focus-visible,.channel:focus-visible,.mini-link:focus-visible,.footer-links a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid rgba(240,138,95,.55);outline-offset:3px}.btn-primary{color:#fffaf4;background:var(--ember);box-shadow:0 9px 22px rgba(217,107,69,.22)}.btn-primary:hover{background:var(--ember-light);box-shadow:0 13px 27px rgba(217,107,69,.3)}.btn-outline{color:var(--text);border-color:var(--line);background:rgba(255,255,255,.025)}.btn-outline:hover{border-color:var(--ember);background:rgba(217,107,69,.09)}
    .eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--ember);font-size:12px;font-weight:800;letter-spacing:.14em}.eyebrow:before{content:"";width:24px;height:1px;background:var(--ember)}.page-intro{background:var(--ink);color:var(--text);padding:78px 0 82px;position:relative;overflow:hidden}.page-intro:after{content:"索引";position:absolute;right:4%;bottom:-40px;color:rgba(255,255,255,.035);font-size:220px;font-weight:900;line-height:1}.intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:end;position:relative;z-index:1}.page-intro h1{font-size:clamp(42px,6vw,76px);line-height:1.08;letter-spacing:-.075em;margin:18px 0 24px;font-weight:900}.page-intro h1 em{color:var(--ember-light);font-style:normal}.intro-copy{max-width:650px;color:#c4b9ad;font-size:17px}.intro-note{border-left:1px solid var(--ember);padding:17px 0 17px 24px;color:var(--muted);font-size:14px}.intro-note strong{display:block;color:var(--text);font-size:25px;line-height:1.3;margin-bottom:8px}
    .section{padding:86px 0}.section-light{background:var(--paper);color:var(--dark-text)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:38px}.section-title{max-width:700px;margin:14px 0 0;font-size:clamp(30px,4vw,52px);line-height:1.12;letter-spacing:-.055em;font-weight:800}.section-copy{max-width:500px;margin:0;color:var(--dark-muted);font-size:16px}.index-toolbar{display:flex;flex-wrap:wrap;gap:10px;padding:16px;border:1px solid var(--dark-line);border-radius:16px;background:rgba(255,255,255,.45);margin-bottom:30px}.filter{min-height:42px;padding:0 16px;border:1px solid var(--dark-line);border-radius:9px;background:transparent;color:var(--dark-muted);font-size:13px;transition:all var(--ease)}.filter:hover,.filter.active{background:var(--ink);border-color:var(--ink);color:var(--text)}.filter:active{transform:scale(.97)}
    .stat-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--dark-line);border-bottom:1px solid var(--dark-line);margin:34px 0 70px}.stat{padding:23px 20px;border-right:1px solid var(--dark-line)}.stat:last-child{border:0}.stat b{display:block;font-size:31px;letter-spacing:-.06em;line-height:1.15}.stat span{display:block;color:var(--dark-muted);font-size:13px;margin-top:5px}
    .index-layout{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(270px,.65fr);gap:28px;align-items:start}.index-list{border-top:1px solid var(--dark-line)}.index-item{display:grid;grid-template-columns:54px 1fr auto;gap:18px;align-items:center;padding:23px 0;border-bottom:1px solid var(--dark-line);transition:padding var(--ease),background var(--ease)}.index-item:hover{padding-left:12px;background:rgba(255,255,255,.32)}.index-no{font-size:28px;color:var(--ember);font-weight:800;letter-spacing:-.06em}.index-item h3{font-size:20px;line-height:1.3;margin:0 0 6px}.index-item p{color:var(--dark-muted);font-size:14px;margin:0}.tag{display:inline-flex;align-items:center;padding:4px 9px;border-radius:6px;background:var(--paper-deep);color:var(--dark-muted);font-size:11px;margin-bottom:8px}.arrow{font-size:24px;color:var(--ember);transition:transform var(--ease)}.index-item:hover .arrow{transform:translateX(4px)}
    .aside-card{background:var(--ink);color:var(--text);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);position:sticky;top:20px}.aside-card h3{font-size:23px;line-height:1.25;margin:10px 0 14px}.aside-card p{color:var(--muted);font-size:14px}.aside-list{list-style:none;padding:0;margin:24px 0 0}.aside-list li{padding:13px 0;border-top:1px solid var(--line);font-size:14px;display:flex;justify-content:space-between;gap:15px}.aside-list span{color:var(--ember-light)}
    .compare{background:var(--ink);color:var(--text);padding:86px 0}.compare .section-copy{color:var(--muted)}.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.compare-card{border:1px solid var(--line);border-radius:var(--radius);padding:30px;background:var(--card)}.compare-card.highlight{border-color:rgba(217,107,69,.7);background:linear-gradient(145deg,#2b211b,#211f1b)}.compare-card h3{font-size:25px;margin:10px 0 18px}.compare-card ul{list-style:none;padding:0;margin:0}.compare-card li{padding:12px 0;border-top:1px solid var(--line);color:var(--muted);font-size:14px}.compare-card li:before{content:"—";color:var(--ember);margin-right:10px}.tip-section{background:var(--paper-deep)}.tips{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.tip{padding:24px;border:1px solid var(--dark-line);border-radius:16px}.tip b{font-size:18px;display:block;margin-bottom:7px}.tip p{font-size:14px;color:var(--dark-muted);margin:0}
    .faq-wrap{max-width:850px}.faq-item{border-top:1px solid var(--dark-line)}.faq-item:last-child{border-bottom:1px solid var(--dark-line)}summary{list-style:none;cursor:pointer;padding:22px 4px;font-size:17px;font-weight:700;display:flex;justify-content:space-between;gap:20px}summary::-webkit-details-marker{display:none}summary:after{content:"+";font-size:24px;color:var(--ember);font-weight:400}details[open] summary:after{content:"−"}details p{color:var(--dark-muted);font-size:14px;margin:0 35px 22px 4px}.cta{background:var(--ember);color:#fffaf4;padding:70px 0}.cta-inner{display:flex;justify-content:space-between;align-items:center;gap:30px}.cta h2{font-size:clamp(30px,4vw,50px);line-height:1.12;letter-spacing:-.055em;margin:0 0 12px}.cta p{margin:0;color:rgba(255,250,244,.78)}.cta .btn{background:var(--ink);color:var(--text)}.cta .btn:hover{background:var(--ink-soft)}
    footer{background:var(--ink);color:var(--text);padding:62px 0 25px}.footer-top{display:grid;grid-template-columns:1.5fr .7fr .7fr;gap:60px;padding-bottom:48px}.footer-brand{margin-bottom:17px}.footer-copy{max-width:360px;color:var(--muted);font-size:14px}.footer-title{font-size:13px;color:var(--ember-light);margin:5px 0 16px}.footer-links{display:grid;gap:9px;color:var(--muted);font-size:14px}.footer-links a{transition:color var(--ease)}.footer-links a:hover{color:var(--text)}.footer-bottom{border-top:1px solid var(--line);padding-top:20px;color:#80766b;font-size:12px;display:flex;justify-content:space-between;gap:20px}
    @media(max-width:1024px){.intro-grid{gap:35px}.index-layout{grid-template-columns:1fr}.aside-card{position:static}.footer-top{gap:30px}}
    @media(max-width:768px){.container{width:min(var(--max),calc(100% - 32px))}.brand-row{min-height:66px}.mini-link{display:none}.page-intro{padding:60px 0}.intro-grid{grid-template-columns:1fr;gap:28px}.stat-strip{grid-template-columns:repeat(2,1fr);margin-bottom:52px}.stat:nth-child(2){border-right:0}.stat:nth-child(-n+2){border-bottom:1px solid var(--dark-line)}.section{padding:65px 0}.section-head,.cta-inner{display:block}.section-copy{margin-top:15px}.compare-grid,.tips{grid-template-columns:1fr}.cta .btn{margin-top:24px}.footer-top{grid-template-columns:1fr 1fr}.footer-top>div:first-child{grid-column:1/-1}}
    @media(max-width:520px){.brand{font-size:16px}.brand-mark{width:31px;height:31px}.brand-actions .btn{min-height:42px;padding:0 13px;font-size:12px}.page-intro h1{font-size:42px}.intro-copy{font-size:15px}.stat b{font-size:26px}.index-item{grid-template-columns:35px 1fr 20px;gap:10px}.index-no{font-size:22px}.index-item h3{font-size:17px}.index-item p{font-size:13px}.footer-top{grid-template-columns:1fr}.footer-top>div:first-child{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}}
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* roulang page: category1 */
:root{
 --ink:#171512;--ink-soft:#24211d;--paper:#f3eee6;--paper-deep:#e7ded2;
 --card:#211f1b;--card-light:#2c2924;--text:#f7f1e9;--muted:#aaa197;
 --dark-text:#28241f;--dark-muted:#756d64;--ember:#d96b45;--ember-light:#f08a5f;
 --line:rgba(255,255,255,.14);--dark-line:rgba(40,36,31,.15);--radius:20px;
 --shadow:0 18px 50px rgba(21,17,13,.16);--ease:240ms cubic-bezier(.2,.8,.2,1);--max:1220px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--ink);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit}
button{cursor:pointer}
img{display:block;max-width:100%}
.container{width:min(var(--max),calc(100% - 48px));margin:0 auto}
.topbar{background:var(--ink);border-bottom:1px solid var(--line);position:relative;z-index:10}
.brand-row{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:13px;font-weight:800;letter-spacing:-.035em;font-size:19px}
.brand-mark{width:34px;height:34px;display:grid;place-items:center;color:var(--ink);background:var(--ember);border-radius:10px 10px 10px 3px;font-size:14px;font-weight:900}
.brand small{display:block;color:var(--muted);font-size:10px;font-weight:500;letter-spacing:.08em;margin-top:-3px}
.brand-actions{display:flex;align-items:center;gap:11px}
.mini-link{font-size:13px;color:var(--muted);transition:color var(--ease)}
.mini-link:hover{color:var(--text)}
.channel-row{border-top:1px solid rgba(255,255,255,.08);overflow-x:auto;scrollbar-width:none}
.channel-row::-webkit-scrollbar{display:none}
.channel-nav{min-height:52px;display:flex;align-items:center;gap:8px;white-space:nowrap}
.channel{position:relative;padding:10px 16px;color:var(--muted);font-size:13px;transition:color var(--ease),background var(--ease)}
.channel:hover{color:var(--text);background:rgba(255,255,255,.05)}
.channel.active{color:var(--text)}
.channel.active:after{content:"";position:absolute;bottom:0;left:16px;right:16px;height:2px;background:var(--ember)}
.btn{min-height:48px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:0 20px;border:1px solid transparent;border-radius:11px;font-size:14px;font-weight:700;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease)}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0) scale(.98)}
.btn:focus-visible,.channel:focus-visible,.mini-link:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid rgba(240,138,95,.55);outline-offset:3px}
.btn-primary{color:#fffaf4;background:var(--ember);box-shadow:0 9px 22px rgba(217,107,69,.22)}
.btn-primary:hover{background:var(--ember-light);box-shadow:0 13px 27px rgba(217,107,69,.3)}
.btn-outline{color:var(--text);border-color:var(--line);background:rgba(255,255,255,.025)}
.btn-outline:hover{border-color:var(--ember);background:rgba(217,107,69,.09)}
.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--ember-light);font-size:12px;font-weight:700;letter-spacing:.14em}
.eyebrow:before{content:"";width:24px;height:1px;background:var(--ember)}
.page-hero{padding:78px 0 72px;background:radial-gradient(circle at 90% 10%,rgba(217,107,69,.18),transparent 30%),var(--ink)}
.hero-layout{display:grid;grid-template-columns:minmax(0,1fr) 390px;gap:70px;align-items:end}
.page-hero h1{max-width:800px;margin:18px 0 22px;font-size:clamp(42px,6vw,78px);line-height:1.08;letter-spacing:-.075em;font-weight:900}
.page-hero h1 em{font-style:normal;color:var(--ember-light)}
.lead{max-width:680px;color:#c4b9ad;font-size:17px;line-height:1.9}
.breadcrumb{display:flex;gap:9px;color:var(--muted);font-size:13px;margin-bottom:24px}
.breadcrumb a:hover{color:var(--text)}
.hero-note{border:1px solid var(--line);border-radius:22px;padding:25px;background:rgba(255,255,255,.045);box-shadow:var(--shadow)}
.note-number{font-size:54px;line-height:1;color:var(--ember-light);font-weight:900;letter-spacing:-.08em}
.note-title{margin:16px 0 8px;font-size:19px;font-weight:800}
.note-copy{margin:0;color:var(--muted);font-size:14px}
.filter-wrap{background:var(--paper);color:var(--dark-text);padding:25px 0;border-bottom:1px solid var(--dark-line)}
.filter-bar{display:flex;align-items:center;gap:10px;overflow-x:auto;scrollbar-width:none}
.filter-bar::-webkit-scrollbar{display:none}
.filter-label{margin-right:10px;color:var(--dark-muted);font-size:13px;font-weight:700;white-space:nowrap}
.filter{padding:9px 16px;border:1px solid var(--dark-line);border-radius:999px;color:var(--dark-muted);font-size:13px;white-space:nowrap;transition:all var(--ease)}
.filter:hover,.filter.active{color:#fff;background:var(--ink);border-color:var(--ink)}
.content-section{padding:92px 0;background:var(--paper);color:var(--dark-text)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:40px}
.section-title{max-width:700px;margin:13px 0 0;font-size:clamp(31px,4vw,52px);line-height:1.12;letter-spacing:-.055em;font-weight:800}
.section-copy{max-width:500px;margin:0;color:var(--dark-muted);font-size:16px}
.dark-section{background:var(--ink);color:var(--text)}
.dark-section .section-copy{color:var(--muted)}
.dark-section .eyebrow{color:var(--ember-light)}
.feature{display:grid;grid-template-columns:1.15fr .85fr;min-height:360px;border:1px solid var(--dark-line);border-radius:24px;overflow:hidden;background:var(--paper-deep);box-shadow:var(--shadow)}
.feature-visual{position:relative;min-height:320px;background:linear-gradient(145deg,#554238 0%,#29211c 52%,#171512 100%);overflow:hidden}
.feature-visual:before{content:"字幕";position:absolute;right:-8px;bottom:-35px;color:rgba(255,255,255,.09);font-size:170px;font-weight:900;line-height:1}
.visual-line{position:absolute;left:12%;right:12%;bottom:25%;height:2px;background:var(--ember)}
.visual-caption{position:absolute;left:12%;bottom:14%;padding:8px 13px;color:#fff;background:rgba(23,21,18,.78);border-left:3px solid var(--ember);font-size:13px}
.feature-body{padding:40px}
.tag{display:inline-flex;align-items:center;padding:6px 10px;border-radius:6px;background:rgba(217,107,69,.13);color:#b95132;font-size:12px;font-weight:800}
.feature h2{margin:18px 0 12px;font-size:clamp(25px,3vw,40px);line-height:1.2;letter-spacing:-.05em}
.feature p{color:var(--dark-muted);font-size:15px}
.feature-meta{display:flex;gap:18px;margin:23px 0;color:var(--dark-muted);font-size:12px}
.topic-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:16px;margin-top:18px}
.topic-card{min-height:190px;padding:25px;border:1px solid var(--dark-line);border-radius:18px;background:rgba(255,255,255,.28);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.topic-card:first-child{min-height:230px;background:var(--ink);color:var(--text)}
.topic-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--ember)}
.topic-card p{color:var(--dark-muted);font-size:14px}
.topic-card:first-child p{color:var(--muted)}
.card-index{font-size:12px;color:var(--ember);font-weight:800}
.topic-card h3{margin:21px 0 8px;font-size:21px;letter-spacing:-.035em}
.card-link{display:inline-flex;gap:8px;margin-top:12px;color:var(--ember);font-size:13px;font-weight:800}
.topic-card:hover .card-link span{transform:translateX(4px)}
.card-link span{transition:transform var(--ease)}
.list-section{padding:98px 0;background:var(--ink)}
.list-layout{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:58px}
.topic-list{border-top:1px solid var(--line)}
.topic-item{display:grid;grid-template-columns:58px 1fr auto;gap:20px;align-items:center;padding:23px 0;border-bottom:1px solid var(--line);transition:padding var(--ease),background var(--ease)}
.topic-item:hover{padding-left:12px;padding-right:12px;background:rgba(255,255,255,.035)}
.topic-item .num{font-size:27px;color:var(--ember-light);font-weight:900;letter-spacing:-.06em}
.topic-item h3{margin:0 0 5px;font-size:18px}
.topic-item p{margin:0;color:var(--muted);font-size:13px}
.item-status{color:var(--muted);font-size:12px;white-space:nowrap}
.side-panel{padding:25px;border:1px solid var(--line);border-radius:18px;background:var(--card)}
.side-panel h3{margin:0 0 16px;font-size:19px}
.side-panel p{color:var(--muted);font-size:14px}
.side-points{padding:0;margin:20px 0 0;list-style:none}
.side-points li{padding:12px 0;border-top:1px solid var(--line);color:#d8cec3;font-size:13px}
.side-points li:before{content:"＋";color:var(--ember);margin-right:8px}
.faq-section{padding:96px 0;background:var(--paper);color:var(--dark-text)}
.faq-list{max-width:900px;border-top:1px solid var(--dark-line)}
details{border-bottom:1px solid var(--dark-line)}
summary{display:flex;justify-content:space-between;gap:20px;padding:21px 0;cursor:pointer;font-size:16px;font-weight:800;list-style:none}
summary::-webkit-details-marker{display:none}
summary:after{content:"＋";color:var(--ember);font-size:22px;font-weight:400}
details[open] summary:after{content:"−"}
.answer{max-width:760px;padding:0 35px 22px 0;color:var(--dark-muted);font-size:14px}
.cta{padding:82px 0;background:var(--paper-deep);color:var(--dark-text)}
.cta-box{display:grid;grid-template-columns:1fr 420px;gap:45px;align-items:center}
.cta h2{margin:15px 0;font-size:clamp(30px,4vw,50px);line-height:1.13;letter-spacing:-.06em}
.cta p{max-width:620px;color:var(--dark-muted)}
.feedback-form{padding:25px;border-radius:18px;background:var(--ink);color:var(--text);box-shadow:var(--shadow)}
.field{margin-bottom:14px}
.field label{display:block;margin-bottom:6px;color:#d9cec3;font-size:12px;font-weight:700}
.field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:9px;padding:11px 13px;outline:0;color:var(--text);background:rgba(255,255,255,.06);transition:border-color var(--ease),background var(--ease)}
.field textarea{min-height:82px;resize:vertical}
.field input:focus,.field textarea:focus{border-color:var(--ember);background:rgba(255,255,255,.09)}
.form-message{min-height:22px;margin:9px 0 0;color:var(--ember-light);font-size:12px}
footer{padding:58px 0 25px;background:#11100e;border-top:1px solid var(--line)}
.footer-top{display:grid;grid-template-columns:1.5fr .7fr .7fr;gap:50px;padding-bottom:42px}
.footer-brand{font-size:18px}
.footer-copy{max-width:360px;margin:18px 0 0;color:var(--muted);font-size:13px}
.footer-title{margin:5px 0 15px;font-size:13px;color:#e4d9ce}
.footer-links{display:flex;flex-direction:column;gap:9px;color:var(--muted);font-size:13px}
.footer-links a{transition:color var(--ease)}
.footer-links a:hover{color:var(--ember-light)}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:21px;border-top:1px solid var(--line);color:#766e66;font-size:12px}
@media(max-width:1024px){
 .hero-layout,.feature,.cta-box{grid-template-columns:1fr;gap:35px}
 .hero-note{max-width:520px}
 .topic-grid{grid-template-columns:1fr 1fr}
 .topic-card:first-child{grid-column:span 2}
 .list-layout{grid-template-columns:1fr}
 .side-panel{max-width:520px}
}
@media(max-width:768px){
 .container{width:min(var(--max),calc(100% - 32px))}
 .brand-row{min-height:64px}
 .brand{font-size:16px}
 .brand-actions .mini-link{display:none}
 .page-hero{padding:58px 0}
 .page-hero h1{font-size:clamp(38px,11vw,58px)}
 .content-section,.list-section,.faq-section{padding:68px 0}
 .section-head{display:block;margin-bottom:30px}
 .section-copy{margin-top:17px}
 .feature-body{padding:28px}
 .topic-grid{grid-template-columns:1fr}
 .topic-card:first-child{grid-column:auto}
 .footer-top{grid-template-columns:1fr 1fr;gap:32px}
 .footer-top>div:first-child{grid-column:span 2}
 .footer-bottom{display:block}
 .footer-bottom span{display:block;margin-top:6px}
}
@media(max-width:520px){
 .brand small{font-size:9px}
 .brand-mark{width:30px;height:30px}
 .btn{width:100%}
 .brand-actions .btn{width:auto;padding:0 13px}
 .hero-note{padding:20px}
 .feature-visual{min-height:220px}
 .topic-item{grid-template-columns:38px 1fr}
 .item-status{grid-column:2}
 .cta-box{gap:25px}
 .footer-top{grid-template-columns:1fr}
 .footer-top>div:first-child{grid-column:auto}
}
@media(prefers-reduced-motion:reduce){
 *,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}