/* roulang page: index */
:root {
      --ink: #100d18;
      --deep: #171121;
      --panel: #20172d;
      --panel-2: #281b38;
      --line: rgba(203, 178, 231, .17);
      --line-bright: rgba(233, 69, 131, .42);
      --text: #f7eff8;
      --muted: #b7a9c7;
      --soft: #8f80a4;
      --pink: #e94583;
      --pink-dark: #bd326f;
      --cyan: #64d7d0;
      --violet: #8b9cff;
      --radius: 18px;
      --shadow: 0 20px 60px rgba(0, 0, 0, .28);
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--text);
      background:
        radial-gradient(circle at 80% 5%, rgba(139, 156, 255, .12), transparent 28rem),
        radial-gradient(circle at 12% 24%, rgba(233, 69, 131, .08), transparent 24rem),
        var(--ink);
      font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }
    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      opacity: .22;
      background-image:
        linear-gradient(rgba(139,156,255,.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(139,156,255,.06) 1px, transparent 1px);
      background-size: 44px 44px;
      mask-image: linear-gradient(to bottom, black, transparent 75%);
    }
    a { color: inherit; text-decoration: none; }
    button, input, select, textarea { font: inherit; }
    button { cursor: pointer; }
    img { display: block; max-width: 100%; }
    ::selection { color: #fff; background: var(--pink-dark); }
    :focus-visible { outline: 3px solid rgba(100, 215, 208, .75); outline-offset: 3px; }

    .container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(16, 13, 24, .94);
      border-bottom: 1px solid var(--line-bright);
      backdrop-filter: blur(16px);
      box-shadow: 0 8px 28px rgba(0, 0, 0, .24);
    }
    .nav-shell { min-height: 78px; display: flex; align-items: center; gap: 28px; }
    .brand { display: inline-flex; align-items: center; gap: 11px; min-width: max-content; }
    .brand-mark {
      width: 34px; height: 34px; display: grid; place-items: center;
      color: #fff; border: 1px solid rgba(233,69,131,.75); border-radius: 10px;
      background: linear-gradient(145deg, rgba(233,69,131,.34), rgba(139,156,255,.2));
      box-shadow: 0 0 22px rgba(233,69,131,.22);
      font-size: 13px; font-weight: 800;
    }
    .brand-name { font-size: 18px; font-weight: 800; letter-spacing: .02em; }
    .brand-name em { color: var(--pink); font-style: normal; }
    .nav-links { display: flex; align-items: center; gap: 7px; margin-left: auto; }
    .nav-link {
      position: relative; padding: 9px 13px; color: var(--muted); font-size: 14px;
      border-radius: 9px; transition: .25s ease;
    }
    .nav-link:hover, .nav-link.active { color: #fff; background: rgba(233,69,131,.1); }
    .nav-link.active { font-weight: 700; }
    .nav-link.active::after {
      content: ""; position: absolute; left: 13px; right: 13px; bottom: 1px;
      height: 2px; border-radius: 2px; background: var(--pink);
      box-shadow: 0 0 10px var(--pink);
    }
    .nav-cta { margin-left: 8px; }
    .menu-toggle { display: none; color: var(--text); background: transparent; border: 1px solid var(--line); border-radius: 10px; padding: 8px 11px; }
    .menu-toggle span { display: block; width: 19px; height: 2px; margin: 4px 0; background: var(--text); }

    .eyebrow {
      display: inline-flex; align-items: center; gap: 8px; color: var(--cyan);
      font-size: 12px; font-weight: 700; letter-spacing: .12em;
    }
    .eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
    .hero { position: relative; padding: 92px 0 70px; }
    .hero-grid { display: grid; grid-template-columns: 1.08fr .92fr; gap: 58px; align-items: center; }
    h1, h2, h3, p { margin-top: 0; }
    h1 { margin-bottom: 24px; font-size: clamp(36px, 5vw, 62px); line-height: 1.16; letter-spacing: -.045em; font-weight: 850; }
    h1 .accent { color: var(--pink); text-shadow: 0 0 28px rgba(233,69,131,.3); }
    .hero-copy { max-width: 680px; color: var(--muted); font-size: 17px; line-height: 1.9; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 30px; }
    .btn {
      display: inline-flex; align-items: center; justify-content: center; gap: 9px;
      min-height: 46px; padding: 0 19px; border-radius: 10px; border: 1px solid transparent;
      font-size: 14px; font-weight: 750; transition: .25s ease;
    }
    .btn-primary { color: #fff; background: var(--pink); box-shadow: 0 10px 28px rgba(233,69,131,.22); }
    .btn-primary:hover { background: #f15a95; transform: translateY(-2px); box-shadow: 0 14px 34px rgba(233,69,131,.34); }
    .btn-primary:active { transform: translateY(0); }
    .btn-secondary { color: var(--text); background: rgba(255,255,255,.025); border-color: var(--line); }
    .btn-secondary:hover { color: var(--cyan); border-color: rgba(100,215,208,.65); background: rgba(100,215,208,.07); transform: translateY(-2px); }
    .btn:disabled { opacity: .48; cursor: not-allowed; transform: none; }

    .index-board {
      position: relative; padding: 25px; border: 1px solid rgba(139,156,255,.32);
      border-radius: 22px; background: linear-gradient(145deg, rgba(40,27,56,.92), rgba(23,17,33,.9));
      box-shadow: var(--shadow), 0 0 40px rgba(139,156,255,.08); overflow: hidden;
    }
    .index-board::before { content: ""; position: absolute; width: 180px; height: 180px; top: -80px; right: -60px; border-radius: 50%; background: rgba(233,69,131,.18); filter: blur(28px); }
    .board-top { display: flex; justify-content: space-between; align-items: center; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
    .board-title { font-weight: 800; }
    .status { display: inline-flex; align-items: center; gap: 7px; color: var(--cyan); font-size: 12px; }
    .status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
    .board-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 20px; background: var(--line); border: 1px solid var(--line); }
    .board-cell { min-height: 105px; padding: 18px; background: rgba(23,17,33,.86); }
    .board-cell strong { display: block; font-family: ui-monospace, monospace; font-size: 31px; line-height: 1.1; color: #fff; }
    .board-cell span { color: var(--soft); font-size: 12px; }
    .progress { height: 7px; margin-top: 21px; overflow: hidden; border-radius: 99px; background: rgba(255,255,255,.08); }
    .progress i { display: block; width: 78%; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--pink), var(--violet)); box-shadow: 0 0 16px rgba(233,69,131,.55); }
    .section { padding: 82px 0; }
    .section-head { display: flex; justify-content: space-between; align-items: end; gap: 28px; margin-bottom: 30px; }
    .section-head h2 { margin-bottom: 9px; font-size: clamp(27px, 3vw, 38px); line-height: 1.25; letter-spacing: -.035em; }
    .section-head p { max-width: 630px; margin-bottom: 0; color: var(--muted); font-size: 15px; }
    .section-kicker { color: var(--pink); font: 700 12px/1 ui-monospace, monospace; letter-spacing: .12em; }

    .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; padding: 14px; border: 1px solid var(--line); border-radius: 16px; background: rgba(32,23,45,.72); }
    .metric { padding: 16px 20px; border-right: 1px solid var(--line); }
    .metric:last-child { border-right: 0; }
    .metric strong { display: block; color: #fff; font-size: 32px; line-height: 1.2; font-family: ui-monospace, monospace; }
    .metric b { display: block; margin: 5px 0 4px; font-size: 14px; }
    .metric small { color: var(--soft); font-size: 12px; }
    .trend { color: var(--cyan); font-size: 11px; }

    .matrix { display: grid; grid-template-columns: 1.05fr .95fr; gap: 18px; }
    .feature-card, .list-panel, .compare-panel, .faq-card, .form-panel, .topic-card {
      border: 1px solid var(--line); border-radius: var(--radius); background: rgba(32,23,45,.78);
      box-shadow: 0 12px 34px rgba(0,0,0,.13);
    }
    .feature-card { padding: 31px; position: relative; overflow: hidden; }
    .feature-card::after { content: "INDEX / 01"; position: absolute; right: 25px; top: 24px; color: rgba(100,215,208,.45); font: 11px ui-monospace, monospace; }
    .tag { display: inline-flex; padding: 5px 9px; border: 1px solid rgba(233,69,131,.5); border-radius: 6px; color: #ff8bb5; font-size: 12px; line-height: 1; }
    .feature-card h3 { margin: 28px 0 10px; font-size: 25px; }
    .feature-card p { color: var(--muted); font-size: 15px; }
    .feature-meta { display: flex; flex-wrap: wrap; gap: 10px 20px; margin: 23px 0; color: var(--soft); font-size: 12px; }
    .feature-link { color: var(--cyan); font-size: 14px; font-weight: 700; }
    .list-panel { padding: 10px 22px; }
    .index-item { display: grid; grid-template-columns: 45px 1fr auto; gap: 14px; align-items: center; padding: 20px 0; border-bottom: 1px solid var(--line); transition: .25s ease; }
    .index-item:last-child { border-bottom: 0; }
    .index-item:hover { padding-left: 7px; }
    .item-no { color: var(--pink); font: 700 12px ui-monospace, monospace; }
    .index-item h4 { margin: 0 0 3px; font-size: 15px; }
    .index-item p { margin: 0; color: var(--soft); font-size: 12px; }
    .arrow { color: var(--cyan); font-size: 20px; }

    .compare { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .compare-panel { padding: 28px; }
    .compare-panel.improved { border-color: rgba(233,69,131,.45); background: linear-gradient(145deg, rgba(67,28,57,.72), rgba(32,23,45,.78)); }
    .compare-panel h3 { margin-bottom: 21px; font-size: 20px; }
    .compare-row { display: flex; align-items: center; justify-content: space-between; gap: 15px; padding: 15px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 14px; }
    .compare-row:last-child { border-bottom: 0; }
    .compare-row b { color: var(--text); font-size: 13px; font-weight: 650; }
    .compare-panel:not(.improved) .compare-row b { color: var(--soft); }
    .compare-panel.improved .compare-row b { color: var(--cyan); }

    .topics { display: grid; grid-template-columns: 1.2fr .8fr 1fr; gap: 14px; }
    .topic-card { min-height: 180px; padding: 24px; transition: .25s ease; }
    .topic-card:hover { transform: translateY(-4px); border-color: rgba(139,156,255,.65); box-shadow: 0 18px 35px rgba(0,0,0,.25); }
    .topic-card:nth-child(2) { background: rgba(49,27,54,.8); }
    .topic-card:nth-child(3) { background: rgba(26,31,55,.8); }
    .topic-card .topic-no { color: var(--violet); font: 700 12px ui-monospace, monospace; }
    .topic-card h3 { margin: 20px 0 8px; font-size: 19px; }
    .topic-card p { margin-bottom: 15px; color: var(--muted); font-size: 13px; }

    .updates { display: grid; grid-template-columns: .8fr 1.2fr; gap: 20px; }
    .update-intro { padding: 28px; border-radius: var(--radius); background: linear-gradient(145deg, rgba(233,69,131,.15), rgba(100,215,208,.08)); border: 1px solid rgba(233,69,131,.28); }
    .update-intro h3 { font-size: 23px; }
    .update-intro p { color: var(--muted); font-size: 14px; }
    .update-list { border-top: 1px solid var(--line); }
    .update-row { display: grid; grid-template-columns: 110px 1fr auto; gap: 16px; align-items: center; padding: 17px 0; border-bottom: 1px solid var(--line); }
    .update-date { color: var(--cyan); font: 12px ui-monospace, monospace; }
    .update-row span:nth-child(2) { font-size: 14px; }
    .update-row a { color: var(--pink); font-size: 13px; }

    .faq-layout { display: grid; grid-template-columns: .65fr 1.35fr; gap: 45px; align-items: start; }
    .faq-copy p { color: var(--muted); font-size: 15px; }
    .faq-card { overflow: hidden; }
    .faq-item { border-bottom: 1px solid var(--line); }
    .faq-item:last-child { border-bottom: 0; }
    .faq-question { width: 100%; display: flex; justify-content: space-between; gap: 18px; padding: 20px 23px; color: var(--text); text-align: left; background: transparent; border: 0; font-weight: 700; }
    .faq-question:hover { color: var(--cyan); background: rgba(100,215,208,.04); }
    .faq-icon { color: var(--pink); font-size: 22px; transition: transform .25s ease; }
    .faq-answer { max-height: 0; overflow: hidden; padding: 0 23px; color: var(--muted); font-size: 14px; transition: max-height .3s ease, padding .3s ease; }
    .faq-item.open .faq-answer { max-height: 180px; padding: 0 23px 21px; }
    .faq-item.open .faq-icon { transform: rotate(45deg); }

    .contact-panel { display: grid; grid-template-columns: .8fr 1.2fr; gap: 38px; padding: 38px; border: 1px solid rgba(233,69,131,.42); border-radius: 22px; background: linear-gradient(120deg, rgba(54,24,50,.92), rgba(31,25,54,.9)); box-shadow: var(--shadow); }
    .contact-panel h2 { margin: 12px 0; font-size: 30px; }
    .contact-panel .intro { color: var(--muted); font-size: 14px; }
    .contact-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
    .contact-tags span { padding: 6px 10px; color: var(--cyan); border: 1px solid rgba(100,215,208,.28); border-radius: 6px; font-size: 12px; }
    .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
    .field { display: flex; flex-direction: column; gap: 7px; }
    .field.full { grid-column: 1 / -1; }
    .field label { color: var(--muted); font-size: 13px; }
    .field input, .field select, .field textarea {
      width: 100%; color: var(--text); background: rgba(16,13,24,.72); border: 1px solid var(--line);
      border-radius: 9px; padding: 11px 13px; transition: .2s ease;
    }
    .field textarea { min-height: 92px; resize: vertical; }
    .field input::placeholder, .field textarea::placeholder { color: #766985; }
    .field input:focus, .field select:focus, .field textarea:focus { outline: 0; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(100,215,208,.12); }
    .checkline { display: flex; align-items: center; gap: 8px; margin: 14px 0 18px; color: var(--soft); font-size: 12px; }
    .checkline input { accent-color: var(--pink); }

    .site-footer { margin-top: 45px; padding: 52px 0 25px; border-top: 1px solid var(--line-bright); background: rgba(11,9,17,.7); }
    .footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 35px; padding-bottom: 38px; }
    .footer-grid h3 { margin: 0 0 14px; font-size: 14px; }
    .footer-grid p, .footer-grid a { color: var(--soft); font-size: 13px; }
    .footer-grid a { display: block; margin: 8px 0; transition: .2s ease; }
    .footer-grid a:hover { color: var(--cyan); transform: translateX(3px); }
    .footer-bottom { display: flex; justify-content: space-between; gap: 18px; padding-top: 20px; border-top: 1px solid var(--line); color: #71647e; font-size: 12px; }

    @media (max-width: 1024px) {
      .hero-grid, .matrix, .updates, .contact-panel { gap: 28px; }
      .topics { grid-template-columns: 1fr 1fr; }
      .topics .topic-card:first-child { grid-column: 1 / -1; }
      .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 34px, 620px); }
      .nav-shell { min-height: 68px; }
      .menu-toggle { display: block; margin-left: auto; }
      .nav-links { display: none; position: absolute; left: 17px; right: 17px; top: 73px; flex-direction: column; align-items: stretch; padding: 12px; border: 1px solid var(--line-bright); border-radius: 14px; background: #171121; box-shadow: var(--shadow); }
      .nav-links.open { display: flex; }
      .nav-link { padding: 13px 14px; }
      .nav-cta { margin: 5px 0 0; }
      .hero { padding: 64px 0 48px; }
      .hero-grid, .matrix, .compare, .updates, .faq-layout, .contact-panel { grid-template-columns: 1fr; }
      .section { padding: 62px 0; }
      .section-head { display: block; }
      .section-head .section-kicker { display: block; margin-bottom: 12px; }
      .metrics { grid-template-columns: 1fr 1fr; }
      .metric:nth-child(2) { border-right: 0; }
      .metric { border-bottom: 1px solid var(--line); }
      .metric:nth-last-child(-n+2) { border-bottom: 0; }
      .topics { grid-template-columns: 1fr; }
      .topics .topic-card:first-child { grid-column: auto; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .footer-grid .footer-brand { grid-column: 1 / -1; }
      .footer-bottom { flex-direction: column; }
    }
    @media (max-width: 520px) {
      .container { width: min(100% - 28px, 460px); }
      h1 { font-size: 38px; }
      .hero-copy { font-size: 15px; }
      .hero-actions .btn { width: 100%; }
      .index-board, .feature-card, .compare-panel, .contact-panel { padding: 22px; }
      .board-cell { min-height: 90px; padding: 13px; }
      .board-cell strong { font-size: 25px; }
      .metrics { gap: 0; padding: 8px; }
      .metric { padding: 14px 10px; }
      .metric strong { font-size: 25px; }
      .index-item { grid-template-columns: 34px 1fr auto; gap: 8px; }
      .update-row { grid-template-columns: 1fr auto; gap: 7px; }
      .update-row span:nth-child(2) { grid-column: 1 / -1; grid-row: 2; }
      .form-grid { grid-template-columns: 1fr; }
      .field.full { grid-column: auto; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-grid .footer-brand { grid-column: auto; }
    }

/* roulang page: category2 */
:root{
      --ink:#100d18;--deep:#171121;--panel:#20172d;--panel-2:#281b38;
      --line:rgba(203,178,231,.17);--line-bright:rgba(233,69,131,.42);
      --text:#f7eff8;--muted:#b7a9c7;--soft:#8f80a4;--pink:#e94583;
      --pink-dark:#bd326f;--cyan:#64d7d0;--violet:#8b9cff;--radius:18px;
      --shadow:0 20px 60px rgba(0,0,0,.28);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--text);background:
      radial-gradient(circle at 80% 4%,rgba(139,156,255,.12),transparent 28rem),
      radial-gradient(circle at 12% 28%,rgba(233,69,131,.08),transparent 24rem),var(--ink);
      font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden}
    body::before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.2;background-image:
      linear-gradient(rgba(139,156,255,.06) 1px,transparent 1px),
      linear-gradient(90deg,rgba(139,156,255,.06) 1px,transparent 1px);
      background-size:44px 44px;mask-image:linear-gradient(to bottom,#000,transparent 78%)}
    a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}
    .container{width:min(1180px,calc(100% - 48px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(16,13,24,.94);border-bottom:1px solid var(--line-bright);backdrop-filter:blur(16px);box-shadow:0 8px 28px rgba(0,0,0,.24)}
    .nav-shell{min-height:78px;display:flex;align-items:center;gap:28px}
    .brand{display:inline-flex;align-items:center;gap:11px;min-width:max-content}
    .brand-mark{width:34px;height:34px;display:grid;place-items:center;color:#fff;border:1px solid rgba(233,69,131,.75);border-radius:10px;background:linear-gradient(145deg,rgba(233,69,131,.34),rgba(139,156,255,.2));box-shadow:0 0 22px rgba(233,69,131,.22);font-size:13px;font-weight:800}
    .brand-name{font-size:18px;font-weight:800;letter-spacing:.02em}.brand-name em{color:var(--pink);font-style:normal}
    .nav-links{display:flex;align-items:center;gap:7px;margin-left:auto}
    .nav-link{position:relative;padding:9px 13px;color:var(--muted);font-size:14px;border-radius:9px;transition:.25s ease}
    .nav-link:hover,.nav-link.active{color:#fff;background:rgba(233,69,131,.1)}
    .nav-link.active{font-weight:700}.nav-link.active::after{content:"";position:absolute;left:13px;right:13px;bottom:1px;height:2px;border-radius:2px;background:var(--pink);box-shadow:0 0 10px var(--pink)}
    .nav-cta{margin-left:8px}.menu-toggle{display:none;color:var(--text);background:transparent;border:1px solid var(--line);border-radius:10px;padding:8px 11px}
    .menu-toggle span{display:block;width:19px;height:2px;margin:4px 0;background:var(--text)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 19px;border-radius:10px;border:1px solid transparent;font-size:14px;font-weight:750;transition:.25s ease}
    .btn-primary{color:#fff;background:var(--pink);box-shadow:0 10px 28px rgba(233,69,131,.22)}
    .btn-primary:hover{background:#f15a95;transform:translateY(-2px);box-shadow:0 14px 34px rgba(233,69,131,.34)}
    .btn-primary:active{transform:translateY(0)}.btn-secondary{color:var(--text);background:rgba(255,255,255,.025);border-color:var(--line)}
    .btn-secondary:hover{color:var(--cyan);border-color:rgba(100,215,208,.65);background:rgba(100,215,208,.07);transform:translateY(-2px)}
    .btn:focus-visible,.nav-link:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid rgba(100,215,208,.7);outline-offset:3px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--cyan);font-size:12px;font-weight:700;letter-spacing:.12em}
    .eyebrow:before{content:"";width:22px;height:1px;background:var(--cyan);box-shadow:0 0 8px var(--cyan)}
    .page-hero{padding:72px 0 48px;border-bottom:1px solid var(--line)}
    .hero-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:end}
    h1{margin:18px 0 16px;font-size:clamp(36px,5vw,58px);line-height:1.15;letter-spacing:-.045em}
    .lead{max-width:700px;color:var(--muted);font-size:17px;line-height:1.9}
    .crumbs{display:flex;gap:10px;align-items:center;color:var(--soft);font-size:13px}.crumbs a:hover{color:var(--cyan)}
    .hero-note{padding:24px;border:1px solid var(--line-bright);border-radius:16px;background:rgba(40,27,56,.72);box-shadow:var(--shadow)}
    .hero-note .small-label{color:var(--soft);font-size:12px;letter-spacing:.1em}.hero-note strong{display:block;margin:8px 0;color:var(--cyan);font-size:27px}
    .hero-note p{margin:0;color:var(--muted);font-size:13px}
    .section{padding:72px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:30px}
    .section-head h2{margin:7px 0 8px;font-size:clamp(27px,3vw,38px);line-height:1.25;letter-spacing:-.035em}
    .section-head p{max-width:630px;margin:0;color:var(--muted);font-size:15px}.section-kicker{color:var(--pink);font:700 12px/1 ui-monospace,monospace;letter-spacing:.12em}
    .summary-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}
    .summary-cell{padding:22px;background:rgba(32,23,45,.8)}.summary-cell strong{display:block;font:800 30px/1.2 ui-monospace,monospace;color:var(--text)}.summary-cell span{display:block;margin-top:8px;color:var(--muted);font-size:13px}.summary-cell i{display:block;margin-top:10px;color:var(--cyan);font-size:12px;font-style:normal}
    .topic-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}.topic-card{position:relative;min-height:230px;padding:28px;overflow:hidden;transition:.25s ease}
    .topic-card:hover{transform:translateY(-4px);border-color:rgba(233,69,131,.55);box-shadow:0 18px 40px rgba(0,0,0,.2)}
    .topic-card:nth-child(2){background:linear-gradient(120deg,rgba(40,27,56,.9),rgba(24,32,58,.85))}.topic-card:nth-child(3){grid-column:span 2;min-height:190px}
    .topic-no{color:var(--pink);font:700 13px ui-monospace,monospace}.topic-card h3{margin:18px 0 8px;font-size:24px}.topic-card p{max-width:650px;color:var(--muted);font-size:14px}
    .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}.tag{display:inline-flex;padding:5px 9px;border:1px solid rgba(233,69,131,.5);border-radius:6px;color:#ff8bb5;font-size:12px;line-height:1}
    .topic-link{color:var(--cyan);font-size:14px;font-weight:700}.topic-link:hover{color:#fff}
    .status-line{height:5px;margin:20px 0 15px;background:rgba(255,255,255,.08);border-radius:5px;overflow:hidden}.status-line span{display:block;width:76%;height:100%;background:var(--pink);box-shadow:0 0 12px rgba(233,69,131,.7)}
    .compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:18px}.compare-panel{padding:26px}.compare-panel h3{margin:0 0 18px;font-size:19px}.compare-panel.good{border-color:rgba(100,215,208,.35)}
    .compare-item{display:flex;justify-content:space-between;gap:20px;padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}.compare-item:last-child{border-bottom:0}.compare-item span{color:var(--muted)}.compare-item b{color:var(--pink);font-weight:600;text-align:right}.good .compare-item b{color:var(--cyan)}
    .update-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:20px;align-items:stretch}.update-intro{padding:30px;border-left:2px solid var(--pink);background:rgba(233,69,131,.06);border-radius:0 16px 16px 0}.update-intro h3{font-size:25px;margin:0 0 12px}.update-intro p{color:var(--muted);font-size:14px}
    .update-list{border:1px solid var(--line);border-radius:16px;background:rgba(32,23,45,.72);padding:8px 24px}.update-item{display:grid;grid-template-columns:105px 90px 1fr auto;gap:14px;align-items:center;padding:17px 0;border-bottom:1px solid var(--line);font-size:14px}.update-item:last-child{border-bottom:0}.update-time{color:var(--soft);font:12px ui-monospace,monospace}.update-item a:hover{color:var(--cyan)}.arrow{color:var(--cyan);font-size:20px}
    .faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:24px}.faq-intro{padding:24px 0}.faq-intro p{color:var(--muted);font-size:15px}.faq-card{padding:8px 24px}
    details{border-bottom:1px solid var(--line)}details:last-child{border-bottom:0}summary{list-style:none;padding:19px 0;cursor:pointer;font-weight:700;display:flex;justify-content:space-between;gap:20px}summary::-webkit-details-marker{display:none}summary:after{content:"+";color:var(--cyan);font-size:22px;font-weight:400}details[open] summary{color:var(--cyan)}details[open] summary:after{content:"−"}details p{margin:-5px 0 20px;color:var(--muted);font-size:14px}
    .cta{padding:36px;border:1px solid rgba(233,69,131,.5);border-radius:20px;background:linear-gradient(110deg,rgba(65,25,56,.85),rgba(32,23,45,.9));display:flex;justify-content:space-between;align-items:center;gap:30px;box-shadow:var(--shadow)}.cta h2{margin:0 0 8px;font-size:28px}.cta p{margin:0;color:var(--muted);font-size:14px}
    .site-footer{padding:58px 0 24px;border-top:1px solid var(--line-bright);background:rgba(16,13,24,.86)}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:35px}.footer-brand p,.footer-grid p{color:var(--muted);font-size:13px}.footer-grid h3{margin:4px 0 15px;font-size:14px;color:#fff}.footer-grid>div:not(.footer-brand) a{display:block;margin:8px 0;color:var(--muted);font-size:13px}.footer-grid a:hover{color:var(--cyan)}.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:42px;padding-top:20px;border-top:1px solid var(--line);color:var(--soft);font-size:12px}
    @media(max-width:900px){.hero-layout,.topic-grid,.update-layout,.faq-grid{grid-template-columns:1fr}.topic-card:nth-child(3){grid-column:auto}.footer-grid{grid-template-columns:1fr 1fr}.summary-row{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:700px){.container{width:min(100% - 32px,600px)}.nav-shell{min-height:68px}.menu-toggle{display:block;margin-left:auto}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;padding:18px 16px 24px;flex-direction:column;align-items:stretch;background:rgba(16,13,24,.98);border-bottom:1px solid var(--line-bright)}.nav-links.open{display:flex}.nav-link,.nav-cta{margin:0;text-align:center}.hero{padding:58px 0 45px}.page-hero{padding:48px 0 36px}h1{font-size:38px}.section{padding:55px 0}.section-head{display:block}.section-head p{margin-top:12px}.compare-wrap{grid-template-columns:1fr}.update-item{grid-template-columns:1fr auto;gap:5px 12px}.update-item .tag{grid-row:1}.update-item a{grid-column:1/-1}.cta{display:block;padding:28px}.cta .btn{margin-top:22px}.footer-grid{grid-template-columns:1fr 1fr;gap:24px}.footer-brand{grid-column:span 2}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}}
    @media(max-width:430px){.brand-name{font-size:15px}.summary-cell strong{font-size:24px}.topic-card{padding:22px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}}

/* roulang page: category1 */
:root {
      --ink:#100d18;
      --deep:#171121;
      --panel:#20172d;
      --panel-2:#281b38;
      --line:rgba(203,178,231,.17);
      --line-bright:rgba(233,69,131,.42);
      --text:#f7eff8;
      --muted:#b7a9c7;
      --soft:#8f80a4;
      --pink:#e94583;
      --pink-dark:#bd326f;
      --cyan:#64d7d0;
      --violet:#8b9cff;
      --radius:18px;
      --shadow:0 20px 60px rgba(0,0,0,.28);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:
        radial-gradient(circle at 84% 7%,rgba(139,156,255,.12),transparent 28rem),
        radial-gradient(circle at 10% 38%,rgba(233,69,131,.08),transparent 25rem),
        var(--ink);
      font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
      line-height:1.75;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      z-index:-1;
      opacity:.22;
      pointer-events:none;
      background-image:
        linear-gradient(rgba(139,156,255,.06) 1px,transparent 1px),
        linear-gradient(90deg,rgba(139,156,255,.06) 1px,transparent 1px);
      background-size:44px 44px;
      mask-image:linear-gradient(to bottom,black,transparent 76%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(1180px,calc(100% - 48px));margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(16,13,24,.95);
      border-bottom:1px solid var(--line-bright);
      backdrop-filter:blur(16px);
      box-shadow:0 8px 28px rgba(0,0,0,.24)
    }
    .nav-shell{min-height:78px;display:flex;align-items:center;gap:28px}
    .brand{display:inline-flex;align-items:center;gap:11px;min-width:max-content}
    .brand-mark{
      width:34px;height:34px;display:grid;place-items:center;
      color:#fff;border:1px solid rgba(233,69,131,.75);
      border-radius:10px;background:linear-gradient(145deg,rgba(233,69,131,.34),rgba(139,156,255,.2));
      box-shadow:0 0 22px rgba(233,69,131,.22);
      font-size:13px;font-weight:800
    }
    .brand-name{font-size:18px;font-weight:800;letter-spacing:.02em}
    .brand-name em{color:var(--pink);font-style:normal}
    .nav-links{display:flex;align-items:center;gap:7px;margin-left:auto}
    .nav-link{
      position:relative;padding:9px 13px;color:var(--muted);
      font-size:14px;border-radius:9px;transition:.25s ease
    }
    .nav-link:hover,.nav-link.active{color:#fff;background:rgba(233,69,131,.1)}
    .nav-link.active{font-weight:700}
    .nav-link.active:after{
      content:"";position:absolute;left:13px;right:13px;bottom:1px;
      height:2px;border-radius:2px;background:var(--pink);
      box-shadow:0 0 10px var(--pink)
    }
    .nav-cta{margin-left:8px}
    .menu-toggle{
      display:none;color:var(--text);background:transparent;
      border:1px solid var(--line);border-radius:10px;padding:8px 11px
    }
    .menu-toggle span{display:block;width:19px;height:2px;margin:4px 0;background:var(--text)}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      min-height:46px;padding:0 19px;border-radius:10px;
      border:1px solid transparent;font-size:14px;font-weight:750;
      transition:.25s ease
    }
    .btn:focus-visible,.nav-link:focus-visible,.faq-question:focus-visible,
    input:focus-visible,select:focus-visible,textarea:focus-visible{
      outline:3px solid rgba(100,215,208,.55);outline-offset:3px
    }
    .btn-primary{color:#fff;background:var(--pink);box-shadow:0 10px 28px rgba(233,69,131,.22)}
    .btn-primary:hover{background:#f15a95;transform:translateY(-2px);box-shadow:0 14px 34px rgba(233,69,131,.34)}
    .btn-primary:active{transform:translateY(0)}
    .btn-secondary{color:var(--text);background:rgba(255,255,255,.025);border-color:var(--line)}
    .btn-secondary:hover{color:var(--cyan);border-color:rgba(100,215,208,.65);background:rgba(100,215,208,.07);transform:translateY(-2px)}
    .btn:disabled{opacity:.48;cursor:not-allowed;transform:none}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;color:var(--cyan);
      font-size:12px;font-weight:700;letter-spacing:.12em
    }
    .eyebrow:before{content:"";width:22px;height:1px;background:var(--cyan);box-shadow:0 0 8px var(--cyan)}
    .hero{padding:72px 0 54px}
    .crumbs{display:flex;align-items:center;gap:10px;color:var(--soft);font-size:13px;margin-bottom:28px}
    .crumbs a:hover{color:var(--cyan)}
    .crumbs .current{color:var(--muted)}
    .hero-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:56px;align-items:end}
    h1,h2,h3,p{margin-top:0}
    h1{
      max-width:760px;margin-bottom:20px;
      font-size:clamp(34px,5vw,56px);line-height:1.2;
      letter-spacing:-.045em;font-weight:800
    }
    .hero-copy{max-width:690px;color:var(--muted);font-size:17px;line-height:1.9}
    .hero-actions{display:flex;flex-wrap:wrap;gap:13px;margin-top:28px}
    .hero-panel{
      position:relative;padding:25px;border:1px solid var(--line-bright);
      border-radius:20px;background:rgba(32,23,45,.82);
      box-shadow:var(--shadow);overflow:hidden
    }
    .hero-panel:after{
      content:"";position:absolute;right:-45px;top:-45px;width:150px;height:150px;
      border:1px solid rgba(100,215,208,.35);border-radius:50%;
      box-shadow:0 0 0 16px rgba(100,215,208,.035),0 0 0 34px rgba(100,215,208,.025)
    }
    .panel-label{color:var(--soft);font:11px ui-monospace,monospace;letter-spacing:.12em}
    .panel-number{margin:10px 0 2px;color:#fff;font:700 46px/1 ui-monospace,monospace}
    .panel-number span{color:var(--pink);font-size:22px}
    .panel-note{color:var(--muted);font-size:13px}
    .panel-rule{height:1px;margin:22px 0;background:var(--line)}
    .status-row{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:13px}
    .status-dot{display:inline-flex;align-items:center;gap:7px;color:var(--cyan)}
    .status-dot:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 9px var(--cyan)}
    .section{padding:70px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:28px}
    .section-head h2{margin-bottom:8px;font-size:clamp(27px,3vw,38px);line-height:1.25;letter-spacing:-.035em}
    .section-head p{max-width:640px;margin-bottom:0;color:var(--muted);font-size:15px}
    .section-kicker{color:var(--pink);font:700 12px/1 ui-monospace,monospace;letter-spacing:.12em}
    .filter-shell{display:grid;grid-template-columns:250px minmax(0,1fr);gap:24px;align-items:start}
    .filter-panel,.list-panel,.topic-card,.faq-card,.form-panel{
      border:1px solid var(--line);border-radius:var(--radius);
      background:rgba(32,23,45,.78);box-shadow:0 12px 34px rgba(0,0,0,.13)
    }
    .filter-panel{padding:22px;position:sticky;top:104px}
    .filter-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
    .filter-title strong{font-size:16px}
    .filter-title span{color:var(--soft);font:11px ui-monospace,monospace}
    .filter-group{padding:18px 0;border-top:1px solid var(--line)}
    .filter-group:first-of-type{border-top:0;padding-top:0}
    .filter-group h3{margin-bottom:11px;color:var(--muted);font-size:13px;font-weight:700}
    .filter-option{display:flex;align-items:center;gap:9px;margin:9px 0;color:var(--soft);font-size:13px;cursor:pointer}
    .filter-option:hover{color:var(--text)}
    .filter-option input{accent-color:var(--pink)}
    .filter-mobile{display:none}
    .list-panel{padding:8px 25px}
    .list-top{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:15px 0;border-bottom:1px solid var(--line)}
    .list-top strong{font-size:15px}
    .sort-select{
      min-height:36px;padding:0 10px;color:var(--muted);
      background:var(--deep);border:1px solid var(--line);border-radius:8px;font-size:12px
    }
    .index-item{
      display:grid;grid-template-columns:50px minmax(0,1fr) auto;
      gap:15px;align-items:center;padding:22px 0;
      border-bottom:1px solid var(--line);transition:.25s ease
    }
    .index-item:last-child{border-bottom:0}
    .index-item:hover{padding-left:8px;padding-right:8px;background:rgba(139,156,255,.035)}
    .index-no{color:var(--pink);font:700 13px ui-monospace,monospace}
    .item-title{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-bottom:5px;font-size:17px;font-weight:750}
    .item-title a:hover{color:var(--cyan)}
    .tag{
      display:inline-flex;padding:4px 8px;border:1px solid rgba(233,69,131,.5);
      border-radius:6px;color:#ff8bb5;font-size:11px;line-height:1;font-weight:600
    }
    .tag.cyan{color:var(--cyan);border-color:rgba(100,215,208,.42)}
    .item-summary{margin:0;color:var(--muted);font-size:13px;line-height:1.7}
    .item-meta{display:flex;flex-wrap:wrap;gap:7px 15px;margin-top:8px;color:var(--soft);font-size:11px}
    .item-arrow{color:var(--cyan);font-size:20px;transition:.2s}
    .index-item:hover .item-arrow{transform:translateX(4px)}
    .featured-strip{
      display:grid;grid-template-columns:1.25fr .9fr .9fr;gap:1px;
      border:1px solid var(--line);background:var(--line);border-radius:var(--radius);overflow:hidden
    }
    .featured-cell{min-height:185px;padding:25px;background:rgba(32,23,45,.9);transition:.25s}
    .featured-cell:hover{background:rgba(40,27,56,.98)}
    .featured-cell:first-child{background:linear-gradient(135deg,rgba(233,69,131,.15),rgba(32,23,45,.92) 65%)}
    .featured-cell .num{color:var(--cyan);font:12px ui-monospace,monospace}
    .featured-cell h3{margin:24px 0 8px;font-size:19px}
    .featured-cell p{margin-bottom:16px;color:var(--muted);font-size:13px}
    .text-link{color:var(--cyan);font-size:13px;font-weight:700}
    .text-link:hover{color:#fff}
    .timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .timeline-card{padding:20px 0 0;border-top:2px solid var(--pink)}
    .timeline-card:nth-child(2){border-color:var(--violet)}
    .timeline-card:nth-child(3){border-color:var(--cyan)}
    .timeline-time{color:var(--soft);font:11px ui-monospace,monospace}
    .timeline-card h3{margin:11px 0 6px;font-size:17px}
    .timeline-card p{margin:0;color:var(--muted);font-size:13px}
    .faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:52px;align-items:start}
    .faq-intro p{max-width:390px;color:var(--muted);font-size:15px}
    .faq-card{overflow:hidden}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-item:last-child{border-bottom:0}
    .faq-question{
      width:100%;display:flex;justify-content:space-between;gap:20px;
      padding:19px 22px;color:var(--text);text-align:left;background:transparent;
      border:0;font-size:15px;font-weight:700
    }
    .faq-question:hover{color:var(--cyan)}
    .faq-icon{color:var(--cyan);font-size:21px;line-height:1;transition:.2s}
    .faq-answer{display:none;padding:0 22px 19px;color:var(--muted);font-size:14px;line-height:1.8}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-icon{transform:rotate(45deg);color:var(--pink)}
    .cta-section{padding:30px 0 88px}
    .form-panel{
      display:grid;grid-template-columns:.8fr 1.2fr;gap:45px;padding:34px;
      background:linear-gradient(125deg,rgba(40,27,56,.96),rgba(32,23,45,.82))
    }
    .form-panel h2{margin:10px 0 12px;font-size:30px;line-height:1.3}
    .form-panel p{color:var(--muted);font-size:14px}
    .contact-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
    .contact-tag{padding:6px 10px;border:1px solid var(--line);border-radius:7px;color:var(--soft);font-size:12px}
    .contact-tag.active{color:#ff9bbd;border-color:rgba(233,69,131,.55);background:rgba(233,69,131,.08)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    .field{display:flex;flex-direction:column;gap:7px}
    .field.full{grid-column:1/-1}
    .field label{color:var(--muted);font-size:12px;font-weight:700}
    .field input,.field select,.field textarea{
      width:100%;color:var(--text);background:rgba(16,13,24,.72);
      border:1px solid var(--line);border-radius:9px;padding:10px 12px;
      transition:.2s;outline:0
    }
    .field input,.field select{height:43px}
    .field textarea{min-height:92px;resize:vertical}
    .field input::placeholder,.field textarea::placeholder{color:#736683}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(100,215,208,.1)}
    .form-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:17px}
    .privacy-note{color:var(--soft);font-size:11px}
    .site-footer{padding:58px 0 24px;border-top:1px solid var(--line);background:rgba(16,13,24,.82)}
    .footer-grid{display:grid;grid-template-columns:1.5fr .8fr .8fr 1fr;gap:35px;padding-bottom:42px}
    .footer-brand p{color:var(--muted);font-size:13px}
    .site-footer h3{margin:0 0 14px;color:var(--text);font-size:14px}
    .site-footer a:not(.brand){display:block;margin:8px 0;color:var(--muted);font-size:13px;transition:.2s}
    .site-footer a:not(.brand):hover{color:var(--cyan);padding-left:3px}
    .site-footer .footer-grid>div>p{color:var(--muted);font-size:13px;line-height:1.8}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid var(--line);color:var(--soft);font-size:11px}
    @media(max-width:1024px){
      .hero-layout{grid-template-columns:1fr 310px;gap:30px}
      .filter-shell{grid-template-columns:215px minmax(0,1fr)}
      .footer-grid{grid-template-columns:1.3fr 1fr 1fr}
      .footer-grid>div:last-child{grid-column:1/-1}
    }
    @media(max-width:768px){
      .container{width:min(100% - 32px,620px)}
      .nav-shell{min-height:70px}
      .menu-toggle{display:block;margin-left:auto}
      .nav-links{
        display:none;position:absolute;left:16px;right:16px;top:76px;
        flex-direction:column;align-items:stretch;gap:5px;padding:12px;
        border:1px solid var(--line-bright);border-radius:14px;
        background:rgba(23,17,33,.98);box-shadow:var(--shadow)
      }
      .nav-links.open{display:flex}
      .nav-link{padding:12px 14px}
      .nav-cta{margin:5px 0 0}
      .hero{padding:48px 0 38px}
      .hero-layout,.filter-shell,.faq-wrap,.form-panel{grid-template-columns:1fr}
      .hero-panel{max-width:420px}
      .filter-panel{position:static}
      .filter-panel{display:none}
      .filter-mobile{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;padding:13px 16px;border:1px solid var(--line);border-radius:10px;background:rgba(32,23,45,.8);color:var(--muted);font-size:13px}
      .featured-strip,.timeline{grid-template-columns:1fr}
      .featured-cell{min-height:auto}
      .form-panel{gap:25px;padding:25px}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 28px)}
      .brand-name{font-size:16px}
      h1{font-size:35px}
      .hero-copy{font-size:15px}
      .section{padding:52px 0}
      .section-head{display:block}
      .section-head h2{font-size:29px}
      .section-head p{margin-top:12px}
      .list-panel{padding:8px 15px}
      .list-top{align-items:flex-start;flex-direction:column}
      .index-item{grid-template-columns:35px minmax(0,1fr);gap:10px;padding:18px 0}
      .item-arrow{grid-column:2}
      .form-grid{grid-template-columns:1fr}
      .field.full{grid-column:auto}
      .form-foot{align-items:flex-start;flex-direction:column}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{align-items:flex-start;flex-direction:column}
    }