/* roulang page: index */
:root {
      --bg: #0f1412;
      --bg-soft: #151d1a;
      --surface: #ffffff;
      --surface-soft: #f5f7f4;
      --ink: #17201c;
      --muted: #66736d;
      --line: rgba(23,32,28,.12);
      --brand: #1f8a70;
      --brand-dark: #126955;
      --accent: #d7a642;
      --danger: #b64848;
      --white: #ffffff;
      --radius-sm: 8px;
      --radius: 16px;
      --radius-lg: 28px;
      --shadow: 0 18px 50px rgba(12,18,15,.16);
      --shadow-soft: 0 10px 28px rgba(12,18,15,.10);
      --container: 1180px;
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: var(--font);
      color: var(--ink);
      background: var(--surface-soft);
      line-height: 1.7;
      text-rendering: optimizeLegibility;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button, input { font: inherit; }
    button { border: 0; cursor: pointer; }
    :focus-visible { outline: 3px solid rgba(31,138,112,.36); outline-offset: 3px; }
    .container { width: min(var(--container), calc(100% - 40px)); margin: 0 auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 30;
      background: rgba(255,255,255,.92);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--line);
    }
    .nav-wrap { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
    .logo { display: inline-flex; align-items: center; gap: 12px; font-weight: 900; color: var(--ink); letter-spacing: 0; }
    .logo-mark {
      width: 38px;
      height: 38px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      color: var(--white);
      background: linear-gradient(135deg, var(--brand), #2ca58d);
      box-shadow: 0 10px 24px rgba(31,138,112,.26);
    }
    .logo-text { font-size: 20px; white-space: nowrap; }
    .nav { display: flex; align-items: center; gap: 8px; }
    .nav a {
      padding: 9px 13px;
      border-radius: 999px;
      color: #42504a;
      font-size: 14px;
      font-weight: 700;
      transition: background .2s ease, color .2s ease, transform .2s ease;
    }
    .nav a:hover, .nav a.active { background: rgba(31,138,112,.10); color: var(--brand-dark); }
    .nav a:active { transform: translateY(1px); }
    .menu-toggle { display: none; width: 42px; height: 42px; border-radius: 12px; background: var(--surface-soft); color: var(--ink); }
    .hero {
      position: relative;
      min-height: 720px;
      display: grid;
      align-items: center;
      overflow: hidden;
      color: var(--white);
      background: linear-gradient(90deg, rgba(7,12,10,.86), rgba(7,12,10,.48)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    }
    .hero::after {
      content: "";
      position: absolute;
      inset: auto 0 0;
      height: 150px;
      background: linear-gradient(180deg, transparent, var(--surface-soft));
    }
    .hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.04fr .96fr; gap: 54px; align-items: center; padding: 80px 0 118px; }
    .eyebrow { display: inline-flex; align-items: center; gap: 8px; width: fit-content; padding: 7px 12px; border: 1px solid rgba(255,255,255,.28); border-radius: 999px; background: rgba(255,255,255,.10); color: rgba(255,255,255,.88); font-size: 13px; font-weight: 800; }
    .eyebrow::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
    h1 { margin: 20px 0 18px; font-size: clamp(40px, 6vw, 78px); line-height: 1.05; letter-spacing: 0; }
    .hero-lead { max-width: 680px; margin: 0 0 28px; color: rgba(255,255,255,.84); font-size: 18px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 12px 18px;
      border-radius: 999px;
      font-weight: 850;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
    }
    .btn-primary { background: var(--brand); color: var(--white); box-shadow: 0 14px 30px rgba(31,138,112,.35); }
    .btn-primary:hover { background: var(--brand-dark); transform: translateY(-2px); }
    .btn-ghost { border: 1px solid rgba(255,255,255,.34); color: var(--white); background: rgba(255,255,255,.08); }
    .btn-ghost:hover { background: rgba(255,255,255,.16); transform: translateY(-2px); }
    .hero-panel {
      border: 1px solid rgba(255,255,255,.22);
      border-radius: var(--radius-lg);
      background: rgba(255,255,255,.12);
      backdrop-filter: blur(22px);
      box-shadow: 0 28px 80px rgba(0,0,0,.28);
      padding: 22px;
    }
    .media-stack { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
    .media-stack img { width: 100%; height: 210px; object-fit: cover; border-radius: 20px; border: 1px solid rgba(255,255,255,.22); }
    .media-stack img:first-child { grid-column: span 2; height: 260px; }
    .age-note { margin-top: 16px; padding: 14px 16px; border-radius: 18px; background: rgba(15,20,18,.70); color: rgba(255,255,255,.82); font-size: 14px; }
    .section { padding: 84px 0; }
    .section-tight { padding-top: 48px; }
    .section-head { display: flex; align-items: end; justify-content: space-between; gap: 26px; margin-bottom: 30px; }
    .section-kicker { margin: 0 0 8px; color: var(--brand-dark); font-weight: 900; font-size: 14px; }
    .section-title { margin: 0; font-size: clamp(28px, 3.4vw, 44px); line-height: 1.2; letter-spacing: 0; }
    .section-desc { max-width: 560px; margin: 0; color: var(--muted); }
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
    .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
    .card {
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(31,138,112,.24); }
    .card-body { padding: 24px; }
    .card h3 { margin: 0 0 10px; font-size: 21px; line-height: 1.32; }
    .card p { margin: 0; color: var(--muted); }
    .cover { width: 100%; height: 190px; object-fit: cover; }
    .badge { display: inline-flex; align-items: center; gap: 7px; padding: 6px 10px; border-radius: 999px; background: rgba(31,138,112,.10); color: var(--brand-dark); font-size: 13px; font-weight: 850; }
    .feature-card { padding: 28px; }
    .feature-icon { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 15px; background: rgba(215,166,66,.16); color: #8b6420; font-weight: 900; margin-bottom: 18px; }
    .band { background: var(--bg); color: var(--white); position: relative; overflow: hidden; }
    .band .section-kicker { color: #74d9c4; }
    .band .section-desc, .band .card p { color: rgba(255,255,255,.70); }
    .band .card { background: rgba(255,255,255,.07); border-color: rgba(255,255,255,.12); color: var(--white); box-shadow: none; }
    .category-card .card-body { min-height: 190px; display: flex; flex-direction: column; gap: 14px; }
    .category-card .btn { margin-top: auto; width: fit-content; background: var(--surface-soft); color: var(--brand-dark); }
    .category-card .btn:hover { background: rgba(31,138,112,.12); transform: translateY(-2px); }
    .split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 42px; align-items: center; }
    .visual-card { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); min-height: 520px; background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat; }
    .visual-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent, rgba(0,0,0,.72)); }
    .visual-caption { position: absolute; z-index: 1; left: 24px; right: 24px; bottom: 24px; color: var(--white); }
    .visual-caption h3 { margin: 0 0 8px; font-size: 28px; }
    .check-list { display: grid; gap: 14px; margin: 24px 0 0; padding: 0; list-style: none; }
    .check-list li { display: flex; gap: 12px; align-items: flex-start; padding: 16px; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; }
    .check-list li::before { content: "✓"; flex: 0 0 24px; width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; background: var(--brand); color: var(--white); font-size: 13px; font-weight: 900; }
    .updates { display: grid; gap: 14px; }
    .update-item { display: grid; grid-template-columns: 150px 1fr auto; gap: 20px; align-items: center; padding: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; transition: transform .2s ease, box-shadow .2s ease; }
    .update-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-soft); }
    .update-meta { color: var(--muted); font-size: 13px; }
    .update-title { margin: 2px 0 4px; font-size: 18px; font-weight: 900; }
    .update-summary { margin: 0; color: var(--muted); font-size: 14px; }
    .arrow { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; background: rgba(31,138,112,.10); color: var(--brand-dark); font-weight: 900; }
    .empty { padding: 20px; border: 1px dashed rgba(31,138,112,.35); border-radius: 16px; color: var(--muted); background: var(--surface); }
    .proof { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .proof-item { padding: 24px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); }
    .proof-num { display: block; color: var(--brand-dark); font-size: 30px; font-weight: 950; line-height: 1; margin-bottom: 8px; }
    .proof-item p { margin: 0; color: var(--muted); }
    .faq { display: grid; gap: 14px; }
    .faq-item { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 22px 24px; }
    .faq-item h3 { margin: 0 0 8px; font-size: 18px; }
    .faq-item p { margin: 0; color: var(--muted); }
    .cta {
      padding: 54px;
      border-radius: var(--radius-lg);
      color: var(--white);
      background: linear-gradient(120deg, rgba(18,105,85,.96), rgba(23,32,28,.92)), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      display: grid;
      grid-template-columns: 1.2fr auto;
      gap: 28px;
      align-items: center;
      box-shadow: var(--shadow);
    }
    .cta h2 { margin: 0 0 10px; font-size: clamp(28px, 4vw, 46px); line-height: 1.16; }
    .cta p { margin: 0; color: rgba(255,255,255,.78); max-width: 680px; }
    .site-footer { background: #0b100e; color: rgba(255,255,255,.72); padding: 54px 0 28px; }
    .footer-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 34px; align-items: start; padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,.12); }
    .footer-brand { color: var(--white); font-size: 22px; font-weight: 950; margin-bottom: 10px; }
    .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; }
    .footer-links a { padding: 8px 10px; border-radius: 999px; transition: background .2s ease, color .2s ease; }
    .footer-links a:hover { color: var(--white); background: rgba(255,255,255,.09); }
    .copyright { margin-top: 24px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; color: rgba(255,255,255,.56); }
    @media (max-width: 1024px) {
      .hero-inner, .split { grid-template-columns: 1fr; }
      .hero { min-height: auto; }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
      .proof { grid-template-columns: repeat(2, 1fr); }
      .section-head { align-items: flex-start; flex-direction: column; }
      .visual-card { min-height: 420px; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 28px, var(--container)); }
      .nav-wrap { min-height: 66px; }
      .menu-toggle { display: grid; place-items: center; }
      .nav { position: absolute; left: 14px; right: 14px; top: 76px; display: none; flex-direction: column; align-items: stretch; padding: 12px; background: var(--surface); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); }
      .nav.open { display: flex; }
      .nav a { border-radius: 12px; padding: 12px 14px; }
      .hero-inner { padding: 58px 0 96px; gap: 32px; }
      .hero-lead { font-size: 16px; }
      .media-stack img, .media-stack img:first-child { height: 180px; grid-column: auto; }
      .media-stack { grid-template-columns: 1fr; }
      .grid-3, .grid-4 { grid-template-columns: 1fr; }
      .section { padding: 62px 0; }
      .update-item { grid-template-columns: 1fr; gap: 10px; }
      .arrow { display: none; }
      .cta { grid-template-columns: 1fr; padding: 34px 24px; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-links { justify-content: flex-start; }
    }
    @media (max-width: 520px) {
      .logo-text { font-size: 18px; }
      h1 { font-size: 38px; }
      .hero-actions .btn { width: 100%; }
      .proof { grid-template-columns: 1fr; }
      .card-body, .feature-card { padding: 20px; }
      .visual-card { min-height: 340px; }
    }

/* roulang page: article */
:root {
      --bg: #f7f3ee;
      --surface: #fffaf4;
      --surface-strong: #ffffff;
      --text: #231f20;
      --muted: #6e6662;
      --soft: #938980;
      --primary: #b3263a;
      --primary-dark: #821b2a;
      --primary-soft: #fde8ea;
      --accent: #0f766e;
      --accent-soft: #d9f4ef;
      --gold: #b9832f;
      --border: rgba(35, 31, 32, .12);
      --shadow: 0 18px 45px rgba(82, 45, 37, .12);
      --shadow-soft: 0 10px 24px rgba(82, 45, 37, .08);
      --radius: 18px;
      --radius-sm: 12px;
      --container: 1160px;
      --ease: all .22s ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
      text-size-adjust: 100%;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      color: var(--text);
      background: radial-gradient(circle at 12% 0%, rgba(179, 38, 58, .08), transparent 32%), var(--bg);
      line-height: 1.75;
      font-size: 16px;
    }

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

    img {
      display: block;
      max-width: 100%;
      height: auto;
    }

    button,
    input {
      font: inherit;
    }

    button {
      border: 0;
      cursor: pointer;
    }

    :focus-visible {
      outline: 3px solid rgba(15, 118, 110, .28);
      outline-offset: 3px;
    }

    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(255, 250, 244, .88);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border);
    }

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 900;
      font-size: 21px;
      letter-spacing: 0;
      white-space: nowrap;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      color: #fff;
      border-radius: 14px;
      background: linear-gradient(135deg, var(--primary), var(--gold));
      box-shadow: 0 10px 22px rgba(179, 38, 58, .24);
      font-weight: 900;
    }

    .nav {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 8px;
      border: 1px solid rgba(35, 31, 32, .08);
      border-radius: 999px;
      background: rgba(255, 255, 255, .62);
    }

    .nav a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 38px;
      padding: 0 15px;
      border-radius: 999px;
      color: var(--muted);
      font-size: 14px;
      font-weight: 700;
      transition: var(--ease);
      white-space: nowrap;
    }

    .nav a:hover,
    .nav a.active {
      color: #fff;
      background: var(--primary);
      box-shadow: 0 8px 18px rgba(179, 38, 58, .18);
    }

    .header-action {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 0 18px;
      border-radius: 999px;
      background: var(--text);
      color: #fff;
      font-weight: 800;
      transition: var(--ease);
      white-space: nowrap;
    }

    .header-action:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-soft);
    }

    .article-hero {
      position: relative;
      overflow: hidden;
      padding: 72px 0 54px;
      background: linear-gradient(120deg, rgba(35, 31, 32, .78), rgba(130, 27, 42, .72)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      color: #fff;
    }

    .article-hero::after {
      content: "";
      position: absolute;
      inset: auto 0 0;
      height: 90px;
      background: linear-gradient(to top, var(--bg), transparent);
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 1;
      max-width: 850px;
    }

    .crumbs {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      margin-bottom: 22px;
      color: rgba(255, 255, 255, .76);
      font-size: 14px;
      font-weight: 700;
    }

    .crumbs a {
      color: #fff;
      transition: var(--ease);
    }

    .crumbs a:hover {
      color: #ffd6dd;
    }

    .badge-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 18px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .14);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, .24);
      font-size: 13px;
      font-weight: 800;
      backdrop-filter: blur(12px);
    }

    .article-hero h1 {
      margin: 0;
      font-size: clamp(32px, 5vw, 56px);
      line-height: 1.12;
      letter-spacing: 0;
      max-width: 980px;
    }

    .hero-desc {
      margin: 22px 0 0;
      max-width: 780px;
      color: rgba(255, 255, 255, .84);
      font-size: 18px;
    }

    .meta-strip {
      position: relative;
      z-index: 2;
      margin-top: -22px;
    }

    .meta-card {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 1px;
      overflow: hidden;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: var(--border);
      box-shadow: var(--shadow);
    }

    .meta-item {
      min-height: 92px;
      padding: 18px 20px;
      background: var(--surface-strong);
    }

    .meta-item span {
      display: block;
      color: var(--soft);
      font-size: 13px;
      font-weight: 800;
    }

    .meta-item strong {
      display: block;
      margin-top: 6px;
      color: var(--text);
      font-size: 17px;
      line-height: 1.35;
      word-break: break-word;
    }

    main {
      padding: 58px 0 0;
    }

    .article-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 330px;
      gap: 34px;
      align-items: start;
    }

    .article-shell {
      overflow: hidden;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: var(--surface-strong);
      box-shadow: var(--shadow-soft);
    }

    .article-cover {
      position: relative;
      min-height: 330px;
      background: #2a2022;
    }

    .article-cover img {
      width: 100%;
      height: 100%;
      min-height: 330px;
      object-fit: cover;
    }

    .article-cover::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(to top, rgba(35, 31, 32, .45), transparent 58%);
    }

    .content-body {
      padding: 38px;
    }

    .content-body h2,
    .content-body h3,
    .content-body h4 {
      margin: 1.6em 0 .65em;
      line-height: 1.28;
      letter-spacing: 0;
    }

    .content-body h2 {
      font-size: 28px;
    }

    .content-body h3 {
      font-size: 22px;
    }

    .content-body p {
      margin: 0 0 18px;
      color: #3b3331;
      font-size: 17px;
    }

    .content-body a {
      color: var(--primary);
      font-weight: 800;
      border-bottom: 1px solid rgba(179, 38, 58, .28);
    }

    .content-body img {
      margin: 28px auto;
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-soft);
    }

    .content-body ul,
    .content-body ol {
      margin: 0 0 22px 22px;
      padding: 0;
      color: #3b3331;
    }

    .content-body li {
      margin: 8px 0;
    }

    .empty-state {
      display: grid;
      place-items: center;
      min-height: 360px;
      padding: 48px 24px;
      text-align: center;
    }

    .empty-state h2 {
      margin: 0 0 12px;
      font-size: 30px;
    }

    .empty-state p {
      margin: 0 0 24px;
      color: var(--muted);
    }

    .side-panel {
      position: sticky;
      top: 100px;
      display: grid;
      gap: 18px;
    }

    .panel-card {
      padding: 22px;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, .78);
      box-shadow: var(--shadow-soft);
    }

    .panel-card h2,
    .panel-card h3 {
      margin: 0 0 14px;
      font-size: 20px;
      line-height: 1.3;
    }

    .panel-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .quick-list {
      display: grid;
      gap: 10px;
      margin-top: 16px;
    }

    .quick-list a,
    .quick-list div {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 12px 14px;
      border-radius: 13px;
      background: var(--bg);
      color: var(--muted);
      font-size: 14px;
      font-weight: 800;
      transition: var(--ease);
    }

    .quick-list a:hover {
      color: var(--primary);
      background: var(--primary-soft);
      transform: translateX(3px);
    }

    .quick-list em {
      color: var(--primary);
      font-style: normal;
    }

    .age-note {
      border-color: rgba(15, 118, 110, .18);
      background: linear-gradient(145deg, rgba(217, 244, 239, .9), rgba(255, 255, 255, .82));
    }

    .section {
      padding: 72px 0;
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 28px;
    }

    .section-kicker {
      display: inline-flex;
      margin-bottom: 10px;
      color: var(--primary);
      font-size: 13px;
      font-weight: 900;
      letter-spacing: 0;
    }

    .section h2 {
      margin: 0;
      font-size: clamp(26px, 3.2vw, 38px);
      line-height: 1.2;
      letter-spacing: 0;
    }

    .section-head p {
      margin: 14px 0 0;
      color: var(--muted);
      font-size: 17px;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 20px;
    }

    .feature-card {
      overflow: hidden;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: var(--surface-strong);
      box-shadow: var(--shadow-soft);
      transition: var(--ease);
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow);
    }

    .feature-card img {
      width: 100%;
      height: 188px;
      object-fit: cover;
    }

    .feature-card-content {
      padding: 20px;
    }

    .feature-card h3 {
      margin: 0 0 8px;
      font-size: 20px;
      line-height: 1.32;
    }

    .feature-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }

    .faq-item {
      padding: 22px;
      border: 1px solid var(--border);
      border-radius: var(--radius);
      background: var(--surface-strong);
      transition: var(--ease);
    }

    .faq-item:hover {
      border-color: rgba(179, 38, 58, .28);
      box-shadow: var(--shadow-soft);
    }

    .faq-item h3 {
      margin: 0 0 8px;
      font-size: 18px;
    }

    .faq-item p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .cta-band {
      position: relative;
      overflow: hidden;
      border-radius: 26px;
      padding: 42px;
      background: linear-gradient(120deg, rgba(179, 38, 58, .92), rgba(15, 118, 110, .88)), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      color: #fff;
      box-shadow: var(--shadow);
    }

    .cta-band h2 {
      max-width: 760px;
      margin: 0;
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.18;
    }

    .cta-band p {
      max-width: 720px;
      margin: 16px 0 26px;
      color: rgba(255, 255, 255, .86);
      font-size: 17px;
    }

    .button-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 0 20px;
      border-radius: 999px;
      font-weight: 900;
      transition: var(--ease);
    }

    .btn-primary {
      color: var(--primary-dark);
      background: #fff;
    }

    .btn-secondary {
      color: #fff;
      border: 1px solid rgba(255, 255, 255, .34);
      background: rgba(255, 255, 255, .12);
    }

    .btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(0, 0, 0, .16);
    }

    .site-footer {
      margin-top: 72px;
      padding: 48px 0 30px;
      background: #1f1b1c;
      color: rgba(255, 255, 255, .82);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(320px, .9fr);
      gap: 38px;
      align-items: start;
    }

    .footer-brand {
      margin-bottom: 12px;
      color: #fff;
      font-size: 24px;
      font-weight: 900;
    }

    .site-footer p {
      max-width: 520px;
      margin: 0;
      color: rgba(255, 255, 255, .66);
    }

    .footer-links {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
    }

    .footer-links a {
      padding: 10px 12px;
      border-radius: 12px;
      color: rgba(255, 255, 255, .72);
      background: rgba(255, 255, 255, .05);
      transition: var(--ease);
    }

    .footer-links a:hover {
      color: #fff;
      background: rgba(255, 255, 255, .12);
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      margin-top: 34px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, .12);
      color: rgba(255, 255, 255, .56);
      font-size: 14px;
    }

    @media (max-width: 1080px) {
      .header-inner {
        flex-wrap: wrap;
        padding: 14px 0;
      }

      .nav {
        order: 3;
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        scrollbar-width: none;
      }

      .nav::-webkit-scrollbar {
        display: none;
      }

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

      .side-panel {
        position: static;
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

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

      .header-action {
        display: none;
      }

      .article-hero {
        padding: 54px 0 46px;
      }

      .hero-desc {
        font-size: 16px;
      }

      .meta-card,
      .feature-grid,
      .faq-grid,
      .footer-grid,
      .side-panel {
        grid-template-columns: 1fr;
      }

      .content-body {
        padding: 28px 22px;
      }

      .article-cover,
      .article-cover img {
        min-height: 240px;
      }

      .section {
        padding: 54px 0;
      }

      .cta-band {
        padding: 30px 22px;
        border-radius: 20px;
      }

      .copyright {
        flex-direction: column;
      }
    }

    @media (max-width: 520px) {
      .brand {
        font-size: 18px;
      }

      .brand-mark {
        width: 38px;
        height: 38px;
        border-radius: 12px;
      }

      .nav a {
        min-height: 36px;
        padding: 0 12px;
        font-size: 13px;
      }

      .article-hero h1 {
        font-size: 30px;
      }

      .meta-item {
        min-height: auto;
      }

      .content-body p {
        font-size: 16px;
      }

      .button-row,
      .btn {
        width: 100%;
      }
    }

/* roulang page: category1 */
:root {
      --bg: #f7f3ee;
      --surface: #fffaf4;
      --surface-strong: #ffffff;
      --text: #1f2423;
      --muted: #6f7472;
      --subtle: #8b8177;
      --primary: #b43f32;
      --primary-dark: #8f2f26;
      --secondary: #136f63;
      --accent: #e7a73b;
      --line: rgba(31, 36, 35, .12);
      --shadow: 0 22px 60px rgba(42, 35, 29, .12);
      --shadow-soft: 0 14px 36px rgba(42, 35, 29, .08);
      --radius-lg: 24px;
      --radius-md: 18px;
      --radius-sm: 12px;
      --container: 1180px;
      --section: 92px;
      --ease: 180ms ease;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(231, 167, 59, .12), transparent 34%),
        linear-gradient(180deg, #fffaf4 0%, var(--bg) 42%, #f1eee8 100%);
      line-height: 1.7;
      min-width: 320px;
    }

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

    img {
      display: block;
      width: 100%;
      height: auto;
    }

    button {
      font: inherit;
    }

    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 250, 244, .88);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--line);
    }

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 900;
      font-size: 20px;
      white-space: nowrap;
      letter-spacing: 0;
    }

    .logo-mark {
      width: 38px;
      height: 38px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 12px 24px rgba(180, 63, 50, .24);
      font-size: 17px;
    }

    .nav {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 6px;
      border: 1px solid rgba(31, 36, 35, .08);
      border-radius: 999px;
      background: rgba(255, 255, 255, .62);
    }

    .nav a {
      display: inline-flex;
      align-items: center;
      min-height: 38px;
      padding: 0 15px;
      border-radius: 999px;
      color: #4a514f;
      font-size: 14px;
      font-weight: 700;
      transition: color var(--ease), background var(--ease), transform var(--ease);
    }

    .nav a:hover,
    .nav a:focus-visible {
      color: var(--primary);
      background: rgba(180, 63, 50, .08);
      outline: none;
    }

    .nav a.active {
      color: #fff;
      background: var(--primary);
      box-shadow: 0 10px 22px rgba(180, 63, 50, .22);
    }

    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: var(--surface-strong);
      color: var(--text);
      cursor: pointer;
      transition: border-color var(--ease), transform var(--ease);
    }

    .menu-toggle:hover,
    .menu-toggle:focus-visible {
      border-color: rgba(180, 63, 50, .45);
      outline: none;
      transform: translateY(-1px);
    }

    .menu-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      margin: 4px auto;
      border-radius: 999px;
      background: currentColor;
    }

    .hero {
      position: relative;
      overflow: hidden;
      padding: 96px 0 78px;
      background-image:
        linear-gradient(90deg, rgba(20, 21, 19, .78), rgba(20, 21, 19, .38) 52%, rgba(20, 21, 19, .68)),
        url("/assets/images/backpic/back-2.webp");
      background-size: cover;
      background-position: center;
      color: #fff;
    }

    .hero::after {
      content: "";
      position: absolute;
      inset: auto 0 0;
      height: 120px;
      background: linear-gradient(180deg, transparent, rgba(247, 243, 238, .95));
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      z-index: 1;
      width: min(760px, 100%);
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 18px;
      padding: 7px 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .14);
      border: 1px solid rgba(255, 255, 255, .24);
      color: rgba(255, 255, 255, .9);
      font-size: 13px;
      font-weight: 800;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 5px rgba(231, 167, 59, .18);
    }

    h1 {
      max-width: 720px;
      font-size: clamp(36px, 5vw, 68px);
      line-height: 1.08;
      letter-spacing: 0;
      font-weight: 950;
      margin-bottom: 22px;
    }

    .hero p {
      max-width: 680px;
      color: rgba(255, 255, 255, .86);
      font-size: 18px;
      line-height: 1.9;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 34px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 0 22px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 900;
      cursor: pointer;
      transition: transform var(--ease), box-shadow var(--ease), background var(--ease), color var(--ease), border-color var(--ease);
    }

    .btn:hover,
    .btn:focus-visible {
      transform: translateY(-2px);
      outline: none;
    }

    .btn-primary {
      color: #fff;
      background: var(--primary);
      box-shadow: 0 16px 34px rgba(180, 63, 50, .3);
    }

    .btn-primary:hover,
    .btn-primary:focus-visible {
      background: var(--primary-dark);
    }

    .btn-light {
      color: #fff;
      border-color: rgba(255, 255, 255, .38);
      background: rgba(255, 255, 255, .12);
    }

    .btn-light:hover,
    .btn-light:focus-visible {
      background: rgba(255, 255, 255, .2);
    }

    .section {
      padding: var(--section) 0;
    }

    .section-tight {
      padding-top: 56px;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 28px;
      margin-bottom: 34px;
    }

    .section-title {
      max-width: 680px;
    }

    .section-title .kicker {
      display: inline-flex;
      margin-bottom: 10px;
      color: var(--secondary);
      font-size: 13px;
      font-weight: 950;
    }

    h2 {
      font-size: clamp(28px, 3.5vw, 44px);
      line-height: 1.18;
      letter-spacing: 0;
      margin-bottom: 14px;
    }

    .section-title p,
    .lead {
      color: var(--muted);
      font-size: 16px;
      max-width: 760px;
    }

    .pill-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .pill {
      display: inline-flex;
      align-items: center;
      min-height: 34px;
      padding: 0 12px;
      border-radius: 999px;
      background: rgba(19, 111, 99, .1);
      color: var(--secondary);
      font-size: 13px;
      font-weight: 850;
      border: 1px solid rgba(19, 111, 99, .14);
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .card {
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, .72);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow);
      border-color: rgba(180, 63, 50, .18);
    }

    .feature-card {
      padding: 26px;
    }

    .icon {
      width: 46px;
      height: 46px;
      display: grid;
      place-items: center;
      border-radius: 16px;
      margin-bottom: 18px;
      color: #fff;
      background: linear-gradient(135deg, var(--secondary), #22a392);
      font-weight: 950;
      box-shadow: 0 14px 28px rgba(19, 111, 99, .18);
    }

    .feature-card h3,
    .media-card h3,
    .step h3,
    .faq-item h3 {
      font-size: 20px;
      line-height: 1.35;
      margin-bottom: 10px;
    }

    .feature-card p,
    .media-card p,
    .step p,
    .faq-item p {
      color: var(--muted);
      font-size: 15px;
    }

    .showcase {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 28px;
      align-items: center;
    }

    .showcase-image {
      position: relative;
      overflow: hidden;
      border-radius: var(--radius-lg);
      min-height: 420px;
      box-shadow: var(--shadow);
      background: #222;
    }

    .showcase-image img {
      height: 100%;
      min-height: 420px;
      object-fit: cover;
    }

    .showcase-image::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 30%, rgba(0, 0, 0, .48));
    }

    .image-note {
      position: absolute;
      left: 22px;
      right: 22px;
      bottom: 22px;
      z-index: 2;
      padding: 18px;
      border-radius: 18px;
      color: #fff;
      background: rgba(0, 0, 0, .38);
      border: 1px solid rgba(255, 255, 255, .18);
      backdrop-filter: blur(12px);
    }

    .image-note strong {
      display: block;
      font-size: 20px;
      margin-bottom: 4px;
    }

    .showcase-panel {
      display: grid;
      gap: 14px;
    }

    .list-item {
      display: flex;
      gap: 15px;
      padding: 19px;
      border-radius: var(--radius-md);
      background: var(--surface-strong);
      border: 1px solid var(--line);
      box-shadow: 0 10px 26px rgba(42, 35, 29, .06);
    }

    .list-num {
      flex: 0 0 auto;
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 12px;
      color: #fff;
      background: var(--primary);
      font-size: 13px;
      font-weight: 950;
    }

    .list-item strong {
      display: block;
      margin-bottom: 4px;
      font-size: 17px;
    }

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

    .media-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .media-card img {
      aspect-ratio: 4 / 3;
      object-fit: cover;
    }

    .media-body {
      padding: 20px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      min-height: 28px;
      padding: 0 10px;
      border-radius: 999px;
      color: var(--primary);
      background: rgba(180, 63, 50, .1);
      border: 1px solid rgba(180, 63, 50, .13);
      font-size: 12px;
      font-weight: 900;
      margin-bottom: 12px;
    }

    .steps {
      counter-reset: step;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }

    .step {
      position: relative;
      padding: 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--line);
      background: linear-gradient(180deg, rgba(255, 255, 255, .84), rgba(255, 250, 244, .74));
      min-height: 210px;
      overflow: hidden;
    }

    .step::before {
      counter-increment: step;
      content: "0" counter(step);
      display: inline-flex;
      margin-bottom: 28px;
      color: rgba(180, 63, 50, .24);
      font-size: 38px;
      line-height: 1;
      font-weight: 950;
    }

    .proof-band {
      border-radius: var(--radius-lg);
      padding: 34px;
      background:
        linear-gradient(135deg, rgba(19, 111, 99, .92), rgba(20, 21, 19, .92)),
        url("/assets/images/backpic/back-3.webp");
      background-size: cover;
      background-position: center;
      color: #fff;
      box-shadow: var(--shadow);
    }

    .proof-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      margin-top: 22px;
    }

    .proof {
      padding: 18px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .1);
      border: 1px solid rgba(255, 255, 255, .16);
    }

    .proof strong {
      display: block;
      font-size: 28px;
      line-height: 1.1;
      margin-bottom: 8px;
    }

    .proof span {
      color: rgba(255, 255, 255, .78);
      font-size: 14px;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: .86fr 1.14fr;
      gap: 28px;
      align-items: start;
    }

    .faq-aside {
      position: sticky;
      top: 100px;
      padding: 26px;
      border-radius: var(--radius-lg);
      background: var(--surface-strong);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
    }

    .faq-list {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      padding: 22px;
      border-radius: var(--radius-md);
      background: rgba(255, 255, 255, .74);
      border: 1px solid var(--line);
    }

    .cta {
      padding: 58px;
      border-radius: 30px;
      background:
        linear-gradient(120deg, rgba(180, 63, 50, .95), rgba(143, 47, 38, .94)),
        url("/assets/images/coverpic/cover-4.webp");
      background-size: cover;
      background-position: center;
      color: #fff;
      box-shadow: var(--shadow);
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 24px;
      align-items: center;
    }

    .cta h2 {
      margin-bottom: 10px;
    }

    .cta p {
      max-width: 720px;
      color: rgba(255, 255, 255, .84);
    }

    .cta .btn {
      background: #fff;
      color: var(--primary);
      box-shadow: 0 16px 36px rgba(0, 0, 0, .18);
      white-space: nowrap;
    }

    .site-footer {
      padding: 54px 0 30px;
      color: rgba(255, 255, 255, .82);
      background: #171a19;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr 1.45fr;
      gap: 36px;
      padding-bottom: 28px;
      border-bottom: 1px solid rgba(255, 255, 255, .12);
    }

    .footer-brand {
      color: #fff;
      font-size: 22px;
      font-weight: 950;
      margin-bottom: 10px;
    }

    .footer-grid p {
      max-width: 430px;
      color: rgba(255, 255, 255, .62);
      font-size: 14px;
    }

    .footer-links {
      display: flex;
      justify-content: flex-end;
      align-items: flex-start;
      flex-wrap: wrap;
      gap: 10px;
    }

    .footer-links a {
      padding: 8px 12px;
      border-radius: 999px;
      color: rgba(255, 255, 255, .72);
      background: rgba(255, 255, 255, .06);
      transition: color var(--ease), background var(--ease);
      font-size: 14px;
      font-weight: 700;
    }

    .footer-links a:hover,
    .footer-links a:focus-visible {
      color: #fff;
      background: rgba(255, 255, 255, .14);
      outline: none;
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding-top: 22px;
      color: rgba(255, 255, 255, .52);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      .header-inner {
        min-height: 68px;
      }

      .menu-toggle {
        display: inline-block;
      }

      .nav {
        position: absolute;
        top: calc(100% + 10px);
        left: 20px;
        right: 20px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        border-radius: 22px;
        background: rgba(255, 250, 244, .98);
        box-shadow: var(--shadow);
      }

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

      .nav a {
        justify-content: center;
        min-height: 44px;
      }

      .feature-grid,
      .media-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .showcase,
      .faq-grid,
      .cta {
        grid-template-columns: 1fr;
      }

      .steps,
      .proof-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .faq-aside {
        position: static;
      }

      .footer-grid {
        grid-template-columns: 1fr;
      }

      .footer-links {
        justify-content: flex-start;
      }
    }

    @media (max-width: 768px) {
      :root {
        --section: 68px;
      }

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

      .hero {
        padding: 76px 0 58px;
      }

      .hero p {
        font-size: 16px;
      }

      .section-head {
        display: block;
      }

      .pill-row {
        margin-top: 16px;
      }

      .showcase-image,
      .showcase-image img {
        min-height: 320px;
      }

      .cta {
        padding: 34px 24px;
        border-radius: 24px;
      }

      .copyright {
        flex-direction: column;
      }
    }

    @media (max-width: 520px) {
      .logo {
        font-size: 18px;
      }

      .logo-mark {
        width: 34px;
        height: 34px;
      }

      .feature-grid,
      .media-grid,
      .steps,
      .proof-grid {
        grid-template-columns: 1fr;
      }

      .hero-actions,
      .btn {
        width: 100%;
      }

      .btn {
        padding: 0 18px;
      }

      .feature-card,
      .step,
      .proof-band,
      .faq-aside,
      .faq-item {
        padding: 20px;
      }

      .proof strong {
        font-size: 24px;
      }
    }

/* roulang page: category2 */
:root {
      --ink: #17201d;
      --muted: #66716c;
      --paper: #f7f8f4;
      --surface: #ffffff;
      --line: #dce4dd;
      --brand: #0c8067;
      --brand-dark: #075948;
      --accent: #f3b53e;
      --dark: #10261f;
      --radius-sm: 10px;
      --radius: 18px;
      --radius-lg: 28px;
      --shadow: 0 18px 45px rgba(20, 46, 37, .10);
      --shadow-hover: 0 24px 54px rgba(12, 72, 56, .16);
      --container: 1160px;
    }

    * { box-sizing: border-box; }

    html { scroll-behavior: smooth; }

    body {
      margin: 0;
      min-width: 320px;
      color: var(--ink);
      background: var(--paper);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.72;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s ease, background-color .2s ease, transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }

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

    button, input {
      font: inherit;
    }

    button {
      border: 0;
      cursor: pointer;
    }

    :focus-visible {
      outline: 3px solid rgba(243, 181, 62, .72);
      outline-offset: 3px;
    }

    .container {
      width: min(calc(100% - 48px), var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(247, 248, 244, .93);
      border-bottom: 1px solid rgba(220, 228, 221, .88);
      backdrop-filter: blur(15px);
    }

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      flex: 0 0 auto;
      color: var(--dark);
      font-size: 20px;
      font-weight: 800;
      letter-spacing: 0;
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      display: grid;
      place-items: center;
      border-radius: 11px;
      color: #fff;
      background: var(--brand);
      box-shadow: 0 7px 17px rgba(12, 128, 103, .24);
    }

    .brand-mark::before {
      content: "18+";
      font-size: 11px;
      font-weight: 800;
      line-height: 1;
    }

    .nav {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 4px;
    }

    .nav a {
      display: inline-flex;
      align-items: center;
      min-height: 40px;
      padding: 0 12px;
      border-radius: 9px;
      color: #46534d;
      font-size: 14px;
      font-weight: 650;
      white-space: nowrap;
    }

    .nav a:hover {
      color: var(--brand-dark);
      background: #e8f3ef;
    }

    .nav a.active {
      color: var(--brand-dark);
      background: #dcefe8;
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border-radius: 10px;
      color: var(--brand-dark);
      background: #e3f1eb;
    }

    .menu-toggle span,
    .menu-toggle::before,
    .menu-toggle::after {
      content: "";
      display: block;
      width: 19px;
      height: 2px;
      margin: 4px auto;
      border-radius: 3px;
      background: currentColor;
    }

    .hero {
      position: relative;
      overflow: hidden;
      min-height: 470px;
      display: flex;
      align-items: center;
      color: #fff;
      background:
        linear-gradient(90deg, rgba(10, 35, 28, .94) 0%, rgba(10, 35, 28, .80) 48%, rgba(10, 35, 28, .42) 100%),
        url("/assets/images/backpic/back-2.webp") center / cover no-repeat;
    }

    .hero::after {
      content: "";
      position: absolute;
      right: -140px;
      bottom: -190px;
      width: 460px;
      height: 460px;
      border: 1px solid rgba(255, 255, 255, .16);
      border-radius: 50%;
      box-shadow: 0 0 0 55px rgba(255, 255, 255, .05), 0 0 0 110px rgba(255, 255, 255, .03);
    }

    .hero-content {
      position: relative;
      z-index: 1;
      max-width: 760px;
      padding: 80px 0 84px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 18px;
      color: #f7cc70;
      font-size: 13px;
      font-weight: 750;
      letter-spacing: .08em;
    }

    .eyebrow::before {
      content: "";
      width: 26px;
      height: 2px;
      border-radius: 5px;
      background: currentColor;
    }

    h1, h2, h3, p { margin-top: 0; }

    h1 {
      max-width: 730px;
      margin-bottom: 18px;
      font-size: clamp(38px, 5vw, 64px);
      line-height: 1.16;
      letter-spacing: 0;
    }

    .hero p {
      max-width: 645px;
      margin-bottom: 30px;
      color: rgba(255, 255, 255, .83);
      font-size: 18px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .button {
      min-height: 48px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      padding: 0 20px;
      border: 1px solid transparent;
      border-radius: 10px;
      font-size: 15px;
      font-weight: 750;
    }

    .button:hover {
      transform: translateY(-2px);
    }

    .button-primary {
      color: #153126;
      background: var(--accent);
      box-shadow: 0 10px 20px rgba(0, 0, 0, .16);
    }

    .button-primary:hover {
      background: #ffd06b;
      box-shadow: 0 14px 25px rgba(0, 0, 0, .22);
    }

    .button-light {
      color: #fff;
      border-color: rgba(255, 255, 255, .35);
      background: rgba(255, 255, 255, .08);
    }

    .button-light:hover {
      border-color: rgba(255, 255, 255, .66);
      background: rgba(255, 255, 255, .16);
    }

    main { overflow: hidden; }

    .section {
      padding: 92px 0;
    }

    .section-soft {
      background: #edf3ef;
    }

    .section-heading {
      max-width: 680px;
      margin-bottom: 42px;
    }

    .section-kicker {
      margin-bottom: 10px;
      color: var(--brand);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .08em;
    }

    h2 {
      margin-bottom: 14px;
      color: var(--dark);
      font-size: clamp(28px, 3.4vw, 42px);
      line-height: 1.25;
      letter-spacing: 0;
    }

    .section-heading p {
      margin-bottom: 0;
      color: var(--muted);
      font-size: 17px;
    }

    .privacy-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }

    .feature-card {
      min-height: 250px;
      padding: 28px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--surface);
      box-shadow: 0 7px 24px rgba(33, 62, 50, .04);
      transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease;
    }

    .feature-card:hover {
      transform: translateY(-5px);
      border-color: #b9d8cd;
      box-shadow: var(--shadow);
    }

    .feature-icon {
      width: 48px;
      height: 48px;
      display: grid;
      place-items: center;
      margin-bottom: 22px;
      border-radius: 14px;
      color: var(--brand-dark);
      background: #dff0e9;
    }

    .feature-icon svg {
      width: 24px;
      height: 24px;
      fill: none;
      stroke: currentColor;
      stroke-width: 1.8;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    .feature-card h3 {
      margin-bottom: 10px;
      color: var(--dark);
      font-size: 20px;
      line-height: 1.35;
    }

    .feature-card p {
      margin-bottom: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .split-panel {
      display: grid;
      grid-template-columns: 1.02fr .98fr;
      overflow: hidden;
      border-radius: var(--radius-lg);
      background: var(--dark);
      box-shadow: var(--shadow);
    }

    .split-image {
      min-height: 485px;
      background: url("/assets/images/coverpic/cover-2.webp") center / cover no-repeat;
    }

    .split-copy {
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: 58px;
      color: rgba(255, 255, 255, .76);
    }

    .split-copy .section-kicker { color: #f6c45b; }

    .split-copy h2 { color: #fff; }

    .split-copy > p {
      margin-bottom: 24px;
      font-size: 16px;
    }

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

    .check-list li {
      position: relative;
      padding-left: 31px;
      color: rgba(255, 255, 255, .83);
    }

    .check-list li::before {
      content: "";
      position: absolute;
      top: .53em;
      left: 0;
      width: 17px;
      height: 9px;
      border-bottom: 2px solid #f6c45b;
      border-left: 2px solid #f6c45b;
      transform: rotate(-45deg);
    }

    .guide-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      counter-reset: steps;
    }

    .guide-card {
      position: relative;
      min-height: 206px;
      padding: 27px 24px;
      border-radius: var(--radius);
      background: var(--surface);
      border: 1px solid var(--line);
    }

    .guide-card::before {
      counter-increment: steps;
      content: "0" counter(steps);
      display: block;
      margin-bottom: 18px;
      color: #a7c8ba;
      font-size: 31px;
      font-weight: 800;
      line-height: 1;
    }

    .guide-card h3 {
      margin-bottom: 8px;
      color: var(--dark);
      font-size: 18px;
    }

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

    .topic-layout {
      display: grid;
      grid-template-columns: .88fr 1.12fr;
      gap: 46px;
      align-items: center;
    }

    .topic-image {
      position: relative;
    }

    .topic-image img {
      width: 100%;
      height: 400px;
      object-fit: cover;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
    }

    .image-note {
      position: absolute;
      right: -18px;
      bottom: 24px;
      max-width: 210px;
      padding: 17px 18px;
      border-left: 4px solid var(--accent);
      border-radius: 10px;
      color: var(--dark);
      background: #fff;
      box-shadow: 0 16px 35px rgba(17, 48, 38, .16);
      font-size: 14px;
      font-weight: 700;
      line-height: 1.55;
    }

    .topic-copy h2 { margin-bottom: 15px; }

    .topic-copy > p {
      color: var(--muted);
      font-size: 17px;
    }

    .topic-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
      margin: 23px 0 27px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 32px;
      padding: 0 12px;
      border: 1px solid #cde3d9;
      border-radius: 999px;
      color: var(--brand-dark);
      background: #f3faf6;
      font-size: 13px;
      font-weight: 700;
    }

    .link-arrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--brand-dark);
      font-size: 15px;
      font-weight: 800;
    }

    .link-arrow::after {
      content: "→";
      font-size: 19px;
      transition: transform .2s ease;
    }

    .link-arrow:hover::after { transform: translateX(4px); }

    .faq-wrap {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 60px;
      align-items: start;
    }

    .faq-intro {
      position: sticky;
      top: 105px;
    }

    .faq-intro p {
      color: var(--muted);
      font-size: 17px;
    }

    .faq-list {
      border-top: 1px solid var(--line);
    }

    details {
      border-bottom: 1px solid var(--line);
    }

    summary {
      position: relative;
      padding: 23px 42px 23px 0;
      color: var(--dark);
      cursor: pointer;
      font-size: 18px;
      font-weight: 750;
      list-style: none;
    }

    summary::-webkit-details-marker { display: none; }

    summary::after {
      content: "+";
      position: absolute;
      top: 17px;
      right: 3px;
      width: 27px;
      height: 27px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: var(--brand-dark);
      background: #e3f1eb;
      font-size: 22px;
      font-weight: 400;
      transition: transform .2s ease, background .2s ease;
    }

    details[open] summary::after {
      transform: rotate(45deg);
      color: #fff;
      background: var(--brand);
    }

    .answer {
      max-width: 730px;
      padding: 0 0 23px;
      color: var(--muted);
    }

    .answer p { margin: 0; }

    .cta-section {
      padding: 0 0 92px;
    }

    .cta {
      position: relative;
      overflow: hidden;
      padding: 56px 58px;
      border-radius: var(--radius-lg);
      color: #fff;
      background:
        linear-gradient(100deg, rgba(10, 68, 54, .97), rgba(13, 108, 84, .90)),
        url("/assets/images/backpic/back-3.webp") center / cover no-repeat;
      box-shadow: var(--shadow);
    }

    .cta::before {
      content: "";
      position: absolute;
      top: -125px;
      right: -90px;
      width: 330px;
      height: 330px;
      border: 45px solid rgba(255, 255, 255, .09);
      border-radius: 50%;
    }

    .cta-content {
      position: relative;
      z-index: 1;
      max-width: 750px;
    }

    .cta h2 {
      margin-bottom: 12px;
      color: #fff;
    }

    .cta p {
      margin-bottom: 25px;
      color: rgba(255, 255, 255, .82);
      font-size: 17px;
    }

    .site-footer {
      padding: 58px 0 24px;
      color: #aec1b7;
      background: #10261f;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 64px;
      padding-bottom: 42px;
    }

    .footer-brand {
      margin-bottom: 11px;
      color: #fff;
      font-size: 22px;
      font-weight: 800;
    }

    .site-footer p {
      max-width: 390px;
      margin-bottom: 0;
      font-size: 14px;
      line-height: 1.75;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      align-content: start;
      gap: 11px 24px;
      padding-top: 6px;
    }

    .footer-links a {
      color: #d6e4dc;
      font-size: 14px;
    }

    .footer-links a:hover { color: #f7c85f; }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      padding-top: 22px;
      border-top: 1px solid rgba(209, 231, 219, .17);
      color: #8ca69a;
      font-size: 12px;
    }

    @media (max-width: 1024px) {
      .nav a { padding: 0 8px; font-size: 13px; }
      .split-copy { padding: 44px; }
      .guide-grid { grid-template-columns: repeat(2, 1fr); }
      .faq-wrap { gap: 35px; }
    }

    @media (max-width: 768px) {
      .container { width: min(calc(100% - 36px), var(--container)); }
      .header-inner { min-height: 68px; }
      .menu-toggle { display: block; }
      .nav {
        position: absolute;
        top: calc(100% + 1px);
        left: 0;
        right: 0;
        display: none;
        align-items: stretch;
        flex-direction: column;
        gap: 2px;
        padding: 13px 18px 18px;
        border-bottom: 1px solid var(--line);
        background: rgba(247, 248, 244, .98);
        box-shadow: 0 14px 24px rgba(21, 45, 36, .09);
      }
      .nav.is-open { display: flex; }
      .nav a { justify-content: flex-start; padding: 0 13px; }
      .hero { min-height: 425px; }
      .hero-content { padding: 67px 0 70px; }
      .hero p { font-size: 16px; }
      .section { padding: 68px 0; }
      .privacy-grid { grid-template-columns: 1fr; }
      .feature-card { min-height: auto; }
      .split-panel { grid-template-columns: 1fr; }
      .split-image { min-height: 290px; }
      .split-copy { padding: 38px 30px; }
      .topic-layout, .faq-wrap { grid-template-columns: 1fr; }
      .topic-layout { gap: 30px; }
      .topic-image img { height: 335px; }
      .faq-intro { position: static; }
      .footer-grid { grid-template-columns: 1fr; gap: 26px; }
    }

    @media (max-width: 520px) {
      .container { width: min(calc(100% - 28px), var(--container)); }
      .brand { font-size: 18px; }
      .brand-mark { width: 31px; height: 31px; }
      .hero { min-height: 455px; }
      h1 { font-size: 37px; }
      .hero-actions { display: grid; grid-template-columns: 1fr; }
      .button { width: 100%; }
      .section { padding: 56px 0; }
      .section-heading { margin-bottom: 29px; }
      .section-heading p, .topic-copy > p, .faq-intro p { font-size: 16px; }
      .feature-card { padding: 24px; }
      .guide-grid { grid-template-columns: 1fr; }
      .guide-card { min-height: auto; }
      .split-copy { padding: 32px 24px; }
      .topic-image img { height: 285px; }
      .image-note { right: 12px; bottom: 12px; max-width: 185px; }
      .cta-section { padding-bottom: 56px; }
      .cta { padding: 35px 24px; }
      .copyright { flex-direction: column; gap: 7px; }
    }

/* roulang page: category5 */
:root {
      --bg: #0d1017;
      --bg-soft: #151a24;
      --panel: #ffffff;
      --panel-muted: #f6f8fb;
      --text: #151924;
      --text-soft: #5f6878;
      --text-invert: #f8fbff;
      --muted-invert: rgba(248, 251, 255, .72);
      --primary: #dc3f5f;
      --primary-dark: #b92746;
      --accent: #18a999;
      --accent-soft: rgba(24, 169, 153, .14);
      --warning: #f6b042;
      --border: rgba(21, 25, 36, .12);
      --border-light: rgba(255, 255, 255, .16);
      --shadow: 0 22px 60px rgba(10, 14, 24, .16);
      --shadow-soft: 0 12px 34px rgba(10, 14, 24, .10);
      --radius: 20px;
      --radius-sm: 12px;
      --container: 1180px;
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: var(--font);
      color: var(--text);
      background: #fff;
      line-height: 1.7;
      text-rendering: optimizeLegibility;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; height: auto; }
    button, input { font: inherit; }
    button { cursor: pointer; }
    :focus-visible { outline: 3px solid rgba(24, 169, 153, .38); outline-offset: 3px; }

    .container {
      width: min(100% - 40px, var(--container));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(13, 16, 23, .92);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-light);
    }

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--text-invert);
      font-weight: 800;
      font-size: 22px;
      letter-spacing: 0;
      white-space: nowrap;
    }

    .logo-mark {
      width: 34px;
      height: 34px;
      border-radius: 11px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 10px 28px rgba(220, 63, 95, .35);
      display: grid;
      place-items: center;
      color: #fff;
      font-size: 16px;
    }

    .nav {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 8px;
      border: 1px solid var(--border-light);
      border-radius: 999px;
      background: rgba(255, 255, 255, .06);
    }

    .nav a {
      color: rgba(255, 255, 255, .78);
      font-size: 14px;
      font-weight: 650;
      padding: 9px 14px;
      border-radius: 999px;
      transition: color .2s ease, background .2s ease, transform .2s ease;
      white-space: nowrap;
    }

    .nav a:hover,
    .nav a.active {
      color: #fff;
      background: rgba(255, 255, 255, .14);
    }

    .nav a:active { transform: translateY(1px); }

    .menu-toggle {
      display: none;
      border: 1px solid var(--border-light);
      border-radius: 12px;
      background: rgba(255, 255, 255, .08);
      color: #fff;
      width: 42px;
      height: 42px;
      align-items: center;
      justify-content: center;
    }

    .hero {
      position: relative;
      min-height: 570px;
      color: var(--text-invert);
      overflow: hidden;
      background: linear-gradient(90deg, rgba(13, 16, 23, .92), rgba(13, 16, 23, .62)), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
    }

    .hero::after {
      content: "";
      position: absolute;
      inset: auto 0 0;
      height: 160px;
      background: linear-gradient(180deg, transparent, #fff);
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      z-index: 1;
      padding: 92px 0 130px;
      max-width: 840px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: #fff;
      background: rgba(24, 169, 153, .18);
      border: 1px solid rgba(24, 169, 153, .32);
      border-radius: 999px;
      padding: 7px 12px;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 22px;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 6px rgba(24, 169, 153, .16);
    }

    h1 {
      margin: 0;
      max-width: 780px;
      font-size: clamp(38px, 5vw, 68px);
      line-height: 1.08;
      letter-spacing: 0;
    }

    .hero p {
      margin: 24px 0 0;
      max-width: 720px;
      color: var(--muted-invert);
      font-size: 18px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 34px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 12px 18px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 760;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    }

    .btn-primary {
      color: #fff;
      background: var(--primary);
      box-shadow: 0 14px 34px rgba(220, 63, 95, .30);
    }

    .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
    .btn-ghost { color: #fff; border-color: var(--border-light); background: rgba(255, 255, 255, .08); }
    .btn-ghost:hover { background: rgba(255, 255, 255, .16); transform: translateY(-2px); }
    .btn-light { color: var(--text); background: #fff; border-color: var(--border); box-shadow: var(--shadow-soft); }
    .btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

    main { background: #fff; }
    .section { padding: 86px 0; }
    .section-muted { background: var(--panel-muted); }
    .section-dark { background: var(--bg); color: var(--text-invert); }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 28px;
      margin-bottom: 34px;
    }

    .section-title { max-width: 700px; }
    .section-title h2 {
      margin: 0;
      font-size: clamp(28px, 3.2vw, 42px);
      line-height: 1.2;
      letter-spacing: 0;
    }

    .section-title p {
      margin: 14px 0 0;
      color: var(--text-soft);
      font-size: 16px;
    }

    .section-dark .section-title p { color: var(--muted-invert); }

    .badge-row { display: flex; flex-wrap: wrap; gap: 10px; }
    .badge {
      display: inline-flex;
      align-items: center;
      min-height: 34px;
      border-radius: 999px;
      padding: 7px 12px;
      background: var(--accent-soft);
      color: #087b70;
      font-weight: 700;
      font-size: 13px;
      border: 1px solid rgba(24, 169, 153, .18);
    }

    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
    .grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; align-items: center; }

    .card {
      background: var(--panel);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }

    .card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(220, 63, 95, .24); }

    .card-body { padding: 26px; }
    .card h3 { margin: 0; font-size: 21px; line-height: 1.35; }
    .card p { margin: 12px 0 0; color: var(--text-soft); }
    .card-img { aspect-ratio: 16/10; width: 100%; object-fit: cover; }

    .check-list { display: grid; gap: 14px; margin: 24px 0 0; padding: 0; list-style: none; }
    .check-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 15px 16px;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      background: rgba(255, 255, 255, .76);
    }
    .check-list li::before {
      content: "✓";
      flex: 0 0 24px;
      width: 24px;
      height: 24px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      background: var(--accent);
      color: #fff;
      font-size: 13px;
      font-weight: 900;
      margin-top: 2px;
    }

    .feature-panel {
      border-radius: calc(var(--radius) + 8px);
      background: linear-gradient(145deg, #fff, #f4f7fb);
      border: 1px solid var(--border);
      padding: 34px;
      box-shadow: var(--shadow-soft);
    }

    .media-frame {
      position: relative;
      border-radius: calc(var(--radius) + 6px);
      overflow: hidden;
      min-height: 410px;
      box-shadow: var(--shadow);
      background: var(--bg-soft);
    }
    .media-frame img { width: 100%; height: 100%; min-height: 410px; object-fit: cover; }
    .media-note {
      position: absolute;
      left: 24px;
      right: 24px;
      bottom: 24px;
      padding: 18px;
      border-radius: var(--radius-sm);
      color: #fff;
      background: rgba(13, 16, 23, .74);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, .15);
    }
    .media-note strong { display: block; font-size: 18px; margin-bottom: 4px; }
    .media-note span { color: var(--muted-invert); font-size: 14px; }

    .step-list { counter-reset: step; display: grid; gap: 16px; }
    .step {
      counter-increment: step;
      display: grid;
      grid-template-columns: 54px 1fr;
      gap: 18px;
      align-items: start;
      padding: 22px;
      border-radius: var(--radius);
      background: rgba(255, 255, 255, .07);
      border: 1px solid var(--border-light);
    }
    .step::before {
      content: counter(step, decimal-leading-zero);
      width: 54px;
      height: 54px;
      border-radius: 18px;
      display: grid;
      place-items: center;
      background: #fff;
      color: var(--primary);
      font-weight: 900;
    }
    .step h3 { margin: 0; font-size: 20px; }
    .step p { margin: 8px 0 0; color: var(--muted-invert); }

    .notice-strip {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 28px;
      padding: 34px;
      border-radius: calc(var(--radius) + 8px);
      background: linear-gradient(135deg, rgba(220, 63, 95, .10), rgba(24, 169, 153, .12));
      border: 1px solid var(--border);
    }
    .notice-strip h2 { margin: 0; font-size: 30px; line-height: 1.22; }
    .notice-strip p { margin: 12px 0 0; color: var(--text-soft); }

    .mini-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .mini-item {
      padding: 16px;
      border-radius: var(--radius-sm);
      background: #fff;
      border: 1px solid var(--border);
      font-weight: 760;
    }
    .mini-item span { display: block; color: var(--text-soft); font-size: 13px; font-weight: 500; margin-top: 4px; }

    .faq { display: grid; gap: 14px; }
    .faq details {
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      background: #fff;
      padding: 0 20px;
      box-shadow: 0 8px 22px rgba(10, 14, 24, .05);
    }
    .faq summary {
      cursor: pointer;
      padding: 18px 0;
      font-weight: 800;
      list-style: none;
    }
    .faq summary::-webkit-details-marker { display: none; }
    .faq summary::after { content: "+"; float: right; color: var(--primary); font-size: 22px; line-height: 1; }
    .faq details[open] summary::after { content: "−"; }
    .faq p { margin: 0 0 18px; color: var(--text-soft); }

    .cta-band {
      position: relative;
      overflow: hidden;
      border-radius: calc(var(--radius) + 12px);
      padding: 44px;
      color: #fff;
      background: linear-gradient(135deg, rgba(13, 16, 23, .90), rgba(13, 16, 23, .70)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      box-shadow: var(--shadow);
    }
    .cta-band h2 { margin: 0; font-size: clamp(28px, 3.4vw, 44px); line-height: 1.18; }
    .cta-band p { margin: 14px 0 0; color: var(--muted-invert); max-width: 720px; }
    .cta-band .hero-actions { margin-top: 26px; }

    .site-footer {
      background: #0b0e14;
      color: var(--text-invert);
      padding: 54px 0 28px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1fr 1.4fr;
      gap: 36px;
      padding-bottom: 34px;
      border-bottom: 1px solid var(--border-light);
    }
    .footer-brand { font-size: 24px; font-weight: 900; margin-bottom: 10px; }
    .site-footer p { margin: 0; color: var(--muted-invert); max-width: 460px; }
    .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; }
    .footer-links a {
      color: rgba(255, 255, 255, .76);
      padding: 9px 12px;
      border-radius: 999px;
      transition: background .2s ease, color .2s ease;
    }
    .footer-links a:hover { color: #fff; background: rgba(255, 255, 255, .10); }
    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      flex-wrap: wrap;
      padding-top: 24px;
      color: rgba(255, 255, 255, .58);
      font-size: 14px;
    }

    @media (max-width: 1024px) {
      .header-inner { min-height: 68px; }
      .nav { gap: 2px; }
      .nav a { padding: 8px 10px; font-size: 13px; }
      .grid-3 { grid-template-columns: repeat(2, 1fr); }
      .section { padding: 72px 0; }
    }

    @media (max-width: 768px) {
      .container { width: min(100% - 28px, var(--container)); }
      .menu-toggle { display: inline-flex; }
      .header-inner { position: relative; }
      .nav {
        display: none;
        position: absolute;
        top: calc(100% + 10px);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        border-radius: 18px;
        background: rgba(13, 16, 23, .98);
        padding: 10px;
        box-shadow: var(--shadow);
      }
      .nav.is-open { display: flex; }
      .nav a { text-align: center; padding: 12px 14px; }
      .hero { min-height: auto; }
      .hero-inner { padding: 72px 0 110px; }
      .hero p { font-size: 16px; }
      .section-head { display: block; }
      .badge-row { margin-top: 18px; }
      .grid-2, .notice-strip, .footer-grid { grid-template-columns: 1fr; }
      .grid-3 { grid-template-columns: 1fr; }
      .footer-links { justify-content: flex-start; }
      .media-frame, .media-frame img { min-height: 320px; }
      .cta-band { padding: 30px; }
    }

    @media (max-width: 520px) {
      .logo { font-size: 19px; }
      h1 { font-size: 36px; }
      .hero-actions, .cta-band .hero-actions { flex-direction: column; }
      .btn { width: 100%; }
      .section { padding: 58px 0; }
      .card-body, .feature-panel, .notice-strip { padding: 22px; }
      .mini-grid { grid-template-columns: 1fr; }
      .step { grid-template-columns: 1fr; }
      .media-note { left: 14px; right: 14px; bottom: 14px; }
      .copyright { display: grid; }
    }

/* roulang page: category4 */
:root {
      --bg: #0f1218;
      --bg-soft: #171b24;
      --panel: #1f2530;
      --panel-light: #262d3a;
      --text: #f7f1e8;
      --muted: #b8ad9d;
      --line: rgba(255, 255, 255, .12);
      --brand: #e14f3d;
      --brand-dark: #b9362b;
      --gold: #f3b85b;
      --green: #38b77d;
      --radius: 18px;
      --radius-sm: 12px;
      --shadow: 0 24px 70px rgba(0, 0, 0, .32);
      --shadow-soft: 0 14px 36px rgba(0, 0, 0, .22);
      --container: 1180px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(225, 79, 61, .18), transparent 32%),
        linear-gradient(180deg, #11151c 0%, var(--bg) 46%, #0b0e13 100%);
      line-height: 1.7;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    button, input { font: inherit; }
    .container { width: min(100% - 40px, var(--container)); margin: 0 auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 20;
      background: rgba(15, 18, 24, .86);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--line);
    }
    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-weight: 900;
      font-size: 22px;
      letter-spacing: 0;
      white-space: nowrap;
    }
    .brand-mark {
      width: 38px;
      height: 38px;
      border-radius: 12px;
      display: grid;
      place-items: center;
      background: linear-gradient(135deg, var(--brand), var(--gold));
      color: #141010;
      box-shadow: 0 12px 30px rgba(225, 79, 61, .35);
    }
    .nav {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 8px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: rgba(255, 255, 255, .045);
    }
    .nav a {
      padding: 9px 14px;
      border-radius: 999px;
      color: var(--muted);
      font-size: 14px;
      transition: .2s ease;
    }
    .nav a:hover, .nav a:focus-visible { color: var(--text); background: rgba(255, 255, 255, .08); outline: none; }
    .nav a.active { color: #17100d; background: linear-gradient(135deg, var(--gold), #ffd98a); font-weight: 800; }
    .age-note {
      color: var(--muted);
      font-size: 13px;
      border: 1px solid var(--line);
      border-radius: 999px;
      padding: 8px 12px;
      white-space: nowrap;
    }

    .hero {
      position: relative;
      overflow: hidden;
      padding: 86px 0 70px;
      background-image: linear-gradient(90deg, rgba(15,18,24,.92), rgba(15,18,24,.68), rgba(15,18,24,.88)), url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      background-position: center;
      border-bottom: 1px solid var(--line);
    }
    .hero-layout {
      display: grid;
      grid-template-columns: 1.08fr .92fr;
      gap: 42px;
      align-items: center;
    }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      color: #ffe1bf;
      background: rgba(225, 79, 61, .18);
      border: 1px solid rgba(243, 184, 91, .28);
      font-size: 14px;
      font-weight: 700;
    }
    h1 {
      margin: 18px 0 18px;
      font-size: clamp(38px, 6vw, 72px);
      line-height: 1.06;
      letter-spacing: 0;
    }
    .hero p { margin: 0; color: #dfd3c2; font-size: 18px; max-width: 720px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 12px 18px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 800;
      cursor: pointer;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    }
    .btn:hover { transform: translateY(-2px); }
    .btn-primary { background: linear-gradient(135deg, var(--brand), #ff876d); color: #fff; box-shadow: 0 18px 40px rgba(225, 79, 61, .28); }
    .btn-secondary { color: var(--text); background: rgba(255,255,255,.07); border-color: var(--line); }
    .btn-secondary:hover { background: rgba(255,255,255,.12); }
    .rank-panel {
      background: rgba(31, 37, 48, .82);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 22px;
      box-shadow: var(--shadow);
    }
    .rank-panel img { height: 230px; width: 100%; object-fit: cover; border-radius: 14px; margin-bottom: 18px; }
    .rank-row {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      padding: 14px 0;
      border-bottom: 1px solid var(--line);
    }
    .rank-row:last-child { border-bottom: 0; }
    .rank-row strong { color: var(--gold); }
    .rank-row span { color: var(--muted); font-size: 14px; }

    main { overflow: hidden; }
    .section { padding: 76px 0; }
    .section-alt { background: rgba(255,255,255,.025); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 30px; }
    .section-head h2 { margin: 0; font-size: clamp(28px, 4vw, 44px); line-height: 1.15; letter-spacing: 0; }
    .section-head p { margin: 0; max-width: 560px; color: var(--muted); }
    .grid { display: grid; gap: 20px; }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
    .card {
      background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.035));
      border: 1px solid var(--line);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-soft);
      transition: transform .2s ease, border-color .2s ease, background .2s ease;
    }
    .card:hover { transform: translateY(-4px); border-color: rgba(243,184,91,.36); background: rgba(255,255,255,.075); }
    .card h3 { margin: 0 0 10px; font-size: 21px; }
    .card p { margin: 0; color: var(--muted); }
    .badge {
      display: inline-flex;
      margin-bottom: 14px;
      padding: 5px 10px;
      border-radius: 999px;
      color: #ffe7c1;
      background: rgba(243, 184, 91, .12);
      border: 1px solid rgba(243, 184, 91, .22);
      font-size: 13px;
      font-weight: 800;
    }
    .media-block {
      display: grid;
      grid-template-columns: .95fr 1.05fr;
      gap: 34px;
      align-items: center;
    }
    .media-block img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); }
    .check-list { display: grid; gap: 12px; margin: 22px 0 0; padding: 0; list-style: none; }
    .check-list li {
      display: flex;
      gap: 12px;
      padding: 13px 14px;
      border-radius: var(--radius-sm);
      background: rgba(255,255,255,.055);
      border: 1px solid var(--line);
      color: #e8dccb;
    }
    .check-list li::before { content: "✓"; color: var(--green); font-weight: 900; }
    .table-card { padding: 0; overflow: hidden; }
    .hot-item {
      display: grid;
      grid-template-columns: 56px 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 18px 20px;
      border-bottom: 1px solid var(--line);
    }
    .hot-item:last-child { border-bottom: 0; }
    .num {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      background: rgba(225,79,61,.16);
      color: #ffc9bf;
      font-weight: 900;
    }
    .hot-item h3 { margin: 0 0 2px; font-size: 18px; }
    .hot-item p { margin: 0; color: var(--muted); font-size: 14px; }
    .heat { color: var(--gold); font-weight: 900; white-space: nowrap; }
    .steps { counter-reset: step; }
    .step { position: relative; padding-left: 58px; }
    .step::before {
      counter-increment: step;
      content: counter(step);
      position: absolute;
      left: 20px;
      top: 24px;
      width: 28px;
      height: 28px;
      border-radius: 10px;
      display: grid;
      place-items: center;
      background: var(--gold);
      color: #16110d;
      font-weight: 900;
    }
    .faq { display: grid; gap: 14px; }
    details {
      background: rgba(255,255,255,.055);
      border: 1px solid var(--line);
      border-radius: var(--radius-sm);
      padding: 18px 20px;
    }
    summary { cursor: pointer; font-weight: 850; color: #fff4e8; }
    details p { margin: 12px 0 0; color: var(--muted); }
    .cta {
      padding: 48px;
      border-radius: 28px;
      background: linear-gradient(135deg, rgba(225,79,61,.95), rgba(243,184,91,.88));
      color: #170f0b;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 28px;
      box-shadow: var(--shadow);
    }
    .cta h2 { margin: 0 0 8px; font-size: clamp(28px, 4vw, 42px); }
    .cta p { margin: 0; color: rgba(23,15,11,.78); max-width: 660px; font-weight: 650; }
    .cta .btn { background: #11151c; color: #fff; flex: 0 0 auto; }
    .site-footer { padding: 54px 0 28px; background: #090b10; border-top: 1px solid var(--line); }
    .footer-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 40px; align-items: start; }
    .footer-brand { font-size: 24px; font-weight: 900; margin-bottom: 10px; }
    .site-footer p { margin: 0; color: var(--muted); max-width: 420px; }
    .footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; }
    .footer-links a { color: var(--muted); padding: 8px 12px; border-radius: 999px; border: 1px solid transparent; transition: .2s ease; }
    .footer-links a:hover { color: var(--text); border-color: var(--line); background: rgba(255,255,255,.05); }
    .copyright { margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 18px; color: #8f877c; font-size: 13px; }

    @media (max-width: 1024px) {
      .header-inner { flex-wrap: wrap; padding: 14px 0; }
      .nav { order: 3; width: 100%; overflow-x: auto; justify-content: flex-start; }
      .hero-layout, .media-block { grid-template-columns: 1fr; }
      .grid-4 { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 28px, var(--container)); }
      .hero { padding: 62px 0 52px; }
      .section { padding: 56px 0; }
      .section-head { display: block; }
      .section-head p { margin-top: 12px; }
      .grid-3, .grid-4 { grid-template-columns: 1fr; }
      .age-note { display: none; }
      .hot-item { grid-template-columns: 44px 1fr; }
      .heat { grid-column: 2; }
      .cta { display: block; padding: 30px; }
      .cta .btn { margin-top: 22px; width: 100%; }
      .footer-grid, .copyright { grid-template-columns: 1fr; display: grid; }
      .footer-links { justify-content: flex-start; }
    }
    @media (max-width: 520px) {
      .brand { font-size: 19px; }
      .brand-mark { width: 34px; height: 34px; }
      .nav a { padding: 8px 11px; font-size: 13px; }
      .hero p { font-size: 16px; }
      .hero-actions .btn { width: 100%; }
      .card { padding: 20px; }
      .rank-panel img { height: 180px; }
    }

/* roulang page: category3 */
:root{
      --bg:#0b0f19;
      --bg-soft:#111827;
      --bg-card:#151c2d;
      --bg-card-2:#101727;
      --text:#f8fafc;
      --muted:#a8b3c7;
      --muted-2:#7d8aa2;
      --primary:#ff4d7d;
      --primary-2:#ff8a3d;
      --accent:#8b5cf6;
      --success:#34d399;
      --warning:#fbbf24;
      --border:rgba(255,255,255,.12);
      --border-strong:rgba(255,255,255,.2);
      --shadow:0 24px 70px rgba(0,0,0,.38);
      --shadow-soft:0 14px 34px rgba(0,0,0,.28);
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --radius-sm:10px;
      --container:1180px;
      --nav-h:76px;
      --ease:cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      min-height:100vh;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 14% 8%,rgba(255,77,125,.24),transparent 30%),
        radial-gradient(circle at 88% 12%,rgba(139,92,246,.22),transparent 34%),
        linear-gradient(180deg,#090d16 0%,#0b0f19 44%,#101521 100%);
      line-height:1.72;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    ::selection{background:rgba(255,77,125,.35);color:#fff}
    .container{
      width:min(var(--container),calc(100% - 40px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      height:var(--nav-h);
      background:rgba(11,15,25,.78);
      border-bottom:1px solid var(--border);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
    }
    .header-inner{
      height:var(--nav-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
      font-weight:900;
      letter-spacing:.02em;
      font-size:20px;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      display:grid;
      place-items:center;
      box-shadow:0 12px 28px rgba(255,77,125,.3);
      position:relative;
      overflow:hidden;
    }
    .brand-mark::after{
      content:"";
      width:14px;
      height:14px;
      border-radius:50%;
      border:3px solid #fff;
      border-left-color:transparent;
      transform:rotate(-25deg);
    }
    .nav{
      display:flex;
      align-items:center;
      gap:6px;
      padding:7px;
      border:1px solid var(--border);
      border-radius:999px;
      background:rgba(255,255,255,.05);
    }
    .nav a{
      color:var(--muted);
      padding:9px 15px;
      border-radius:999px;
      font-size:14px;
      font-weight:700;
      transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
      white-space:nowrap;
    }
    .nav a:hover{
      color:#fff;
      background:rgba(255,255,255,.09);
      transform:translateY(-1px);
    }
    .nav a.active{
      color:#fff;
      background:linear-gradient(135deg,rgba(255,77,125,.95),rgba(139,92,246,.9));
      box-shadow:0 10px 24px rgba(255,77,125,.22);
    }
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      background:rgba(255,255,255,.08);
      border:1px solid var(--border);
      color:#fff;
      align-items:center;
      justify-content:center;
      transition:.22s var(--ease);
    }
    .menu-toggle:hover,.menu-toggle:focus{
      background:rgba(255,255,255,.13);
      outline:none;
      box-shadow:0 0 0 4px rgba(255,77,125,.16);
    }
    .menu-toggle span{
      width:18px;
      height:2px;
      background:#fff;
      border-radius:2px;
      position:relative;
    }
    .menu-toggle span::before,.menu-toggle span::after{
      content:"";
      position:absolute;
      left:0;
      width:18px;
      height:2px;
      background:#fff;
      border-radius:2px;
    }
    .menu-toggle span::before{top:-6px}
    .menu-toggle span::after{top:6px}

    main{position:relative}
    .section{
      padding:88px 0;
      position:relative;
    }
    .section-tight{padding:62px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#ffd2df;
      font-size:13px;
      font-weight:800;
      letter-spacing:.08em;
      padding:8px 12px;
      border:1px solid rgba(255,77,125,.28);
      border-radius:999px;
      background:rgba(255,77,125,.12);
      margin-bottom:18px;
    }
    .eyebrow::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 5px rgba(255,77,125,.14);
    }
    .hero{
      min-height:620px;
      display:flex;
      align-items:center;
      overflow:hidden;
      background:
        linear-gradient(90deg,rgba(9,13,22,.96) 0%,rgba(9,13,22,.84) 45%,rgba(9,13,22,.54) 100%),
        url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
      border-bottom:1px solid var(--border);
    }
    .hero::after{
      content:"";
      position:absolute;
      inset:auto -10% -180px -10%;
      height:330px;
      background:radial-gradient(ellipse at center,rgba(255,77,125,.18),transparent 70%);
      pointer-events:none;
    }
    .hero-layout{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:52px;
      align-items:center;
      position:relative;
      z-index:1;
    }
    .hero h1{
      font-size:clamp(38px,5.4vw,70px);
      line-height:1.08;
      letter-spacing:-.055em;
      max-width:760px;
      margin-bottom:22px;
    }
    .hero h1 span{
      background:linear-gradient(135deg,#fff 0%,#ffd0dc 40%,#ff9a52 100%);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .hero-subtitle{
      color:var(--muted);
      font-size:18px;
      max-width:720px;
      margin-bottom:30px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      align-items:center;
      margin-bottom:34px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:48px;
      padding:13px 19px;
      border-radius:999px;
      font-weight:850;
      transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
    }
    .btn-primary{
      background:linear-gradient(135deg,var(--primary),var(--primary-2));
      color:#fff;
      box-shadow:0 16px 36px rgba(255,77,125,.3);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 22px 46px rgba(255,77,125,.38)}
    .btn-ghost{
      color:#fff;
      background:rgba(255,255,255,.08);
      border:1px solid var(--border-strong);
    }
    .btn-ghost:hover{background:rgba(255,255,255,.13);transform:translateY(-2px)}
    .btn:focus{
      outline:none;
      box-shadow:0 0 0 4px rgba(255,77,125,.22),0 16px 36px rgba(255,77,125,.18);
    }
    .hero-note{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 11px;
      border-radius:999px;
      color:#dde5f4;
      background:rgba(255,255,255,.07);
      border:1px solid var(--border);
      font-size:13px;
      font-weight:700;
    }
    .badge-dot{
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--success);
    }
    .release-panel{
      border:1px solid var(--border);
      border-radius:var(--radius-xl);
      background:linear-gradient(180deg,rgba(21,28,45,.86),rgba(16,23,39,.74));
      box-shadow:var(--shadow);
      padding:18px;
      transform:rotate(1.2deg);
    }
    .release-panel-inner{
      border-radius:22px;
      overflow:hidden;
      background:#0b0f19;
      position:relative;
    }
    .release-panel-inner img{
      width:100%;
      aspect-ratio:4/3.2;
      object-fit:cover;
      opacity:.86;
    }
    .release-overlay{
      position:absolute;
      inset:auto 16px 16px 16px;
      padding:18px;
      border-radius:18px;
      background:rgba(10,14,24,.76);
      border:1px solid rgba(255,255,255,.16);
      backdrop-filter:blur(14px);
    }
    .release-overlay strong{
      display:block;
      font-size:20px;
      margin-bottom:7px;
    }
    .release-overlay p{
      color:var(--muted);
      font-size:14px;
    }

    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap:28px;
      margin-bottom:34px;
    }
    .section-title{
      font-size:clamp(28px,3.6vw,46px);
      line-height:1.18;
      letter-spacing:-.035em;
      margin-bottom:12px;
    }
    .section-desc{
      color:var(--muted);
      max-width:700px;
      font-size:16px;
    }
    .text-link{
      color:#ffd2df;
      font-weight:850;
      display:inline-flex;
      align-items:center;
      gap:7px;
      transition:.22s var(--ease);
      white-space:nowrap;
    }
    .text-link:hover{color:#fff;transform:translateX(3px)}
    .grid-3{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .grid-2{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:22px;
    }
    .card{
      border:1px solid var(--border);
      background:linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.035));
      border-radius:var(--radius-lg);
      padding:24px;
      box-shadow:var(--shadow-soft);
      transition:transform .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
      position:relative;
      overflow:hidden;
    }
    .card::before{
      content:"";
      position:absolute;
      inset:0;
      background:radial-gradient(circle at 16% 0%,rgba(255,77,125,.14),transparent 35%);
      opacity:0;
      transition:.25s var(--ease);
      pointer-events:none;
    }
    .card:hover{
      transform:translateY(-5px);
      border-color:rgba(255,77,125,.35);
      background:linear-gradient(180deg,rgba(255,255,255,.105),rgba(255,255,255,.045));
    }
    .card:hover::before{opacity:1}
    .card > *{position:relative;z-index:1}
    .icon{
      width:48px;
      height:48px;
      border-radius:16px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg,rgba(255,77,125,.22),rgba(139,92,246,.2));
      border:1px solid rgba(255,255,255,.14);
      margin-bottom:18px;
      font-size:21px;
    }
    .card h3{
      font-size:20px;
      line-height:1.35;
      margin-bottom:10px;
    }
    .card p{
      color:var(--muted);
      font-size:15px;
    }
    .media-card{
      padding:0;
      overflow:hidden;
    }
    .media-card img{
      width:100%;
      aspect-ratio:16/10;
      object-fit:cover;
      transition:transform .35s var(--ease);
    }
    .media-card:hover img{transform:scale(1.04)}
    .media-body{padding:22px}
    .media-meta{
      display:flex;
      gap:8px;
      flex-wrap:wrap;
      margin-bottom:13px;
    }
    .tag{
      display:inline-flex;
      padding:5px 9px;
      border-radius:999px;
      color:#ffceda;
      border:1px solid rgba(255,77,125,.28);
      background:rgba(255,77,125,.1);
      font-size:12px;
      font-weight:800;
    }

    .feature-band{
      border:1px solid var(--border);
      border-radius:var(--radius-xl);
      background:
        linear-gradient(135deg,rgba(255,77,125,.14),rgba(139,92,246,.11)),
        rgba(255,255,255,.04);
      padding:34px;
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:34px;
      align-items:center;
      overflow:hidden;
    }
    .feature-band img{
      border-radius:22px;
      aspect-ratio:4/3;
      object-fit:cover;
      box-shadow:var(--shadow-soft);
    }
    .check-list{
      list-style:none;
      display:grid;
      gap:14px;
      margin-top:22px;
    }
    .check-list li{
      display:flex;
      gap:12px;
      color:#dbe4f2;
      padding:13px 14px;
      border:1px solid rgba(255,255,255,.1);
      border-radius:14px;
      background:rgba(0,0,0,.14);
    }
    .check-list li::before{
      content:"✓";
      width:24px;
      height:24px;
      flex:0 0 24px;
      display:grid;
      place-items:center;
      border-radius:50%;
      color:#07101b;
      font-weight:900;
      background:var(--success);
      margin-top:2px;
    }
    .timeline{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
      counter-reset:step;
    }
    .step{
      counter-increment:step;
      padding:22px;
      border-radius:var(--radius-lg);
      background:rgba(255,255,255,.055);
      border:1px solid var(--border);
      position:relative;
      min-height:205px;
    }
    .step::before{
      content:"0" counter(step);
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:42px;
      height:42px;
      border-radius:14px;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      font-weight:900;
      margin-bottom:16px;
    }
    .step h3{
      font-size:18px;
      margin-bottom:9px;
    }
    .step p{
      color:var(--muted);
      font-size:14px;
    }
    .notice{
      border:1px solid rgba(251,191,36,.35);
      background:linear-gradient(135deg,rgba(251,191,36,.12),rgba(255,77,125,.08));
      border-radius:var(--radius-lg);
      padding:24px;
      display:flex;
      gap:18px;
      align-items:flex-start;
    }
    .notice-icon{
      width:46px;
      height:46px;
      border-radius:16px;
      background:rgba(251,191,36,.2);
      display:grid;
      place-items:center;
      color:#ffe39b;
      font-size:22px;
      flex:0 0 auto;
    }
    .notice h2{
      font-size:22px;
      margin-bottom:8px;
    }
    .notice p{
      color:#d9dfeb;
    }
    .faq-wrap{
      display:grid;
      gap:14px;
    }
    .faq-item{
      border:1px solid var(--border);
      background:rgba(255,255,255,.055);
      border-radius:18px;
      overflow:hidden;
    }
    .faq-question{
      width:100%;
      color:#fff;
      background:transparent;
      padding:20px 22px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      text-align:left;
      font-weight:850;
      font-size:16px;
      transition:.22s var(--ease);
    }
    .faq-question:hover{background:rgba(255,255,255,.055)}
    .faq-question:focus{outline:none;box-shadow:inset 0 0 0 3px rgba(255,77,125,.18)}
    .faq-question span:last-child{
      width:28px;
      height:28px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:rgba(255,255,255,.09);
      color:#ffd2df;
      flex:0 0 auto;
      transition:transform .22s var(--ease);
    }
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height .28s var(--ease);
    }
    .faq-answer p{
      color:var(--muted);
      padding:0 22px 20px;
    }
    .cta{
      padding:70px 0 88px;
    }
    .cta-box{
      border-radius:32px;
      border:1px solid rgba(255,255,255,.16);
      background:
        linear-gradient(135deg,rgba(255,77,125,.28),rgba(139,92,246,.2)),
        url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
      overflow:hidden;
      position:relative;
      box-shadow:var(--shadow);
    }
    .cta-box::before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(90deg,rgba(8,12,22,.92),rgba(8,12,22,.62));
    }
    .cta-content{
      position:relative;
      z-index:1;
      padding:48px;
      max-width:780px;
    }
    .cta h2{
      font-size:clamp(30px,4vw,48px);
      line-height:1.18;
      letter-spacing:-.04em;
      margin-bottom:14px;
    }
    .cta p{
      color:#dce5f5;
      margin-bottom:24px;
      font-size:17px;
    }

    .site-footer{
      border-top:1px solid var(--border);
      background:rgba(6,9,16,.78);
      padding:48px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1fr 1.4fr;
      gap:34px;
      align-items:start;
      margin-bottom:32px;
    }
    .footer-brand{
      font-size:22px;
      font-weight:950;
      margin-bottom:10px;
      letter-spacing:.02em;
    }
    .site-footer p{
      color:var(--muted);
      max-width:450px;
      font-size:14px;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      justify-content:flex-end;
      gap:10px;
    }
    .footer-links a{
      color:var(--muted);
      padding:9px 12px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.08);
      background:rgba(255,255,255,.035);
      font-size:14px;
      transition:.22s var(--ease);
    }
    .footer-links a:hover{
      color:#fff;
      border-color:rgba(255,77,125,.32);
      background:rgba(255,77,125,.1);
      transform:translateY(-1px);
    }
    .copyright{
      border-top:1px solid rgba(255,255,255,.09);
      padding-top:20px;
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      color:var(--muted-2);
      font-size:13px;
    }

    @media (max-width:1024px){
      :root{--nav-h:70px}
      .container{width:min(100% - 32px,var(--container))}
      .header-inner{gap:14px}
      .nav a{padding:8px 11px;font-size:13px}
      .hero-layout{grid-template-columns:1fr;gap:34px}
      .release-panel{max-width:620px;transform:none}
      .grid-3{grid-template-columns:repeat(2,1fr)}
      .timeline{grid-template-columns:repeat(2,1fr)}
      .feature-band{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width:768px){
      .site-header{height:auto;min-height:var(--nav-h)}
      .menu-toggle{display:flex}
      .nav{
        position:absolute;
        left:16px;
        right:16px;
        top:calc(var(--nav-h) - 2px);
        display:none;
        flex-direction:column;
        align-items:stretch;
        border-radius:22px;
        padding:10px;
        background:rgba(13,18,31,.96);
        box-shadow:var(--shadow);
      }
      .nav.open{display:flex}
      .nav a{
        text-align:center;
        padding:12px 14px;
      }
      .hero{min-height:auto;padding:74px 0 54px}
      .hero h1{font-size:clamp(34px,10vw,52px)}
      .hero-subtitle{font-size:16px}
      .section{padding:66px 0}
      .section-tight{padding:48px 0}
      .section-head{
        flex-direction:column;
        align-items:flex-start;
      }
      .grid-2,.grid-3{grid-template-columns:1fr}
      .notice{flex-direction:column}
      .cta-content{padding:36px 26px}
    }
    @media (max-width:520px){
      .container{width:calc(100% - 24px)}
      .brand{font-size:18px}
      .brand-mark{width:38px;height:38px;border-radius:13px}
      .hero-actions{align-items:stretch}
      .btn{width:100%}
      .hero-note{display:grid;grid-template-columns:1fr}
      .release-overlay{position:static;border-radius:0}
      .timeline{grid-template-columns:1fr}
      .card,.feature-band{padding:20px}
      .media-card{padding:0}
      .media-body{padding:19px}
      .copyright{flex-direction:column}
    }