/* roulang page: index */
:root {
      --ink: #14110F;
      --ink-soft: #211B18;
      --paper: #F4EFE7;
      --paper-2: #E8DED0;
      --amber: #C18A45;
      --amber-dark: #A87231;
      --wine: #6E2630;
      --muted: #8D8982;
      --line-dark: rgba(244,239,231,.14);
      --line-light: rgba(20,17,15,.12);
      --shadow-sm: 0 12px 30px rgba(20,17,15,.10);
      --shadow-md: 0 24px 70px rgba(20,17,15,.20);
      --radius-sm: 12px;
      --radius-md: 18px;
      --radius-lg: 28px;
      --container: 1200px;
      --ease: all .22s ease;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      color: var(--ink);
      background: var(--paper);
      line-height: 1.7;
      text-rendering: optimizeLegibility;
    }
    a { color: inherit; text-decoration: none; transition: var(--ease); }
    a:hover { color: var(--amber-dark); }
    img { max-width: 100%; display: block; }
    button, input, select { font: inherit; }
    ::selection { background: var(--amber); color: var(--ink); }

    .site-shell {
      overflow: hidden;
      background:
        radial-gradient(circle at 12% 10%, rgba(193,138,69,.18), transparent 28%),
        linear-gradient(180deg, #1A1512 0%, #1A1512 12%, var(--paper) 12%, var(--paper) 100%);
    }
    .container-xl {
      max-width: var(--container);
    }

    .topbar {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(20,17,15,.90);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--line-dark);
    }
    .nav-wrap {
      min-height: 76px;
      display: grid;
      grid-template-columns: auto 1fr auto;
      align-items: center;
      gap: 22px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--paper);
      font-weight: 800;
      font-size: 18px;
      white-space: nowrap;
    }
    .brand-mark {
      width: 34px;
      height: 34px;
      border-radius: 50%;
      background:
        linear-gradient(135deg, var(--amber), #E0B26F 48%, var(--wine));
      box-shadow: inset 0 0 0 1px rgba(244,239,231,.22);
      position: relative;
    }
    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 9px;
      border-radius: 50%;
      border: 2px solid rgba(20,17,15,.72);
    }
    .nav-chips {
      display: flex;
      justify-content: center;
      gap: 10px;
      min-width: 0;
    }
    .nav-chip {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 40px;
      padding: 8px 16px;
      border-radius: 999px;
      border: 1px solid var(--line-dark);
      color: rgba(244,239,231,.82);
      font-size: 14px;
      font-weight: 600;
      white-space: nowrap;
      background: rgba(244,239,231,.04);
    }
    .nav-chip:hover,
    .nav-chip:focus {
      color: var(--paper);
      border-color: rgba(193,138,69,.62);
      background: rgba(193,138,69,.12);
      outline: none;
    }
    .nav-chip.active {
      color: var(--ink);
      border-color: var(--amber);
      background: var(--amber);
    }
    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 10px 18px;
      border-radius: 999px;
      background: var(--paper);
      color: var(--ink);
      font-size: 14px;
      font-weight: 800;
      border: 1px solid rgba(244,239,231,.20);
      box-shadow: 0 10px 28px rgba(0,0,0,.18);
    }
    .nav-cta:hover {
      background: var(--amber);
      color: var(--ink);
      transform: translateY(-1px);
    }

    .btn-brand {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 48px;
      padding: 12px 22px;
      border-radius: 999px;
      border: 1px solid var(--amber);
      background: var(--amber);
      color: var(--ink);
      font-weight: 800;
      box-shadow: 0 16px 36px rgba(193,138,69,.25);
      transition: var(--ease);
    }
    .btn-brand:hover,
    .btn-brand:focus {
      background: var(--amber-dark);
      border-color: var(--amber-dark);
      color: var(--ink);
      transform: translateY(-2px);
      box-shadow: 0 20px 42px rgba(193,138,69,.32);
      outline: none;
    }
    .btn-ghost {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 12px 22px;
      border-radius: 999px;
      border: 1px solid rgba(244,239,231,.28);
      color: var(--paper);
      background: rgba(244,239,231,.06);
      font-weight: 800;
      transition: var(--ease);
    }
    .btn-ghost:hover,
    .btn-ghost:focus {
      border-color: var(--amber);
      color: var(--paper);
      background: rgba(193,138,69,.16);
      transform: translateY(-2px);
      outline: none;
    }
    .btn-darkline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 10px 18px;
      border-radius: 999px;
      border: 1px solid var(--line-light);
      color: var(--ink);
      background: rgba(20,17,15,.03);
      font-weight: 800;
      transition: var(--ease);
    }
    .btn-darkline:hover,
    .btn-darkline:focus {
      background: var(--ink);
      color: var(--paper);
      border-color: var(--ink);
      transform: translateY(-1px);
      outline: none;
    }

    .section {
      padding: 92px 0;
    }
    .section-tight {
      padding: 70px 0;
    }
    .section-dark {
      background: var(--ink);
      color: var(--paper);
      position: relative;
    }
    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 14px;
      color: var(--amber);
      font-weight: 800;
      font-size: 14px;
    }
    .section-kicker::before {
      content: "";
      width: 28px;
      height: 1px;
      background: currentColor;
    }
    .section-title {
      margin: 0;
      font-size: clamp(30px, 4vw, 38px);
      line-height: 1.2;
      font-weight: 800;
      color: inherit;
    }
    .section-copy {
      margin: 16px 0 0;
      max-width: 760px;
      color: var(--muted);
      font-size: 17px;
    }
    .section-dark .section-copy {
      color: rgba(244,239,231,.68);
    }

    .hero {
      padding: 58px 0 36px;
      color: var(--paper);
      position: relative;
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(20,17,15,.96), rgba(20,17,15,.78) 46%, rgba(20,17,15,.92)),
        radial-gradient(circle at 74% 32%, rgba(193,138,69,.28), transparent 26%),
        repeating-linear-gradient(90deg, rgba(244,239,231,.035) 0 1px, transparent 1px 22px);
      pointer-events: none;
    }
    .hero .container-xl { position: relative; z-index: 1; }
    .hero-bento {
      display: grid;
      grid-template-columns: 1.25fr .75fr;
      grid-template-rows: auto auto;
      gap: 18px;
      align-items: stretch;
    }
    .hero-main,
    .hero-mini,
    .hero-cta-strip {
      border: 1px solid var(--line-dark);
      border-radius: var(--radius-lg);
      background: rgba(244,239,231,.06);
      box-shadow: 0 24px 80px rgba(0,0,0,.28);
      overflow: hidden;
    }
    .hero-main {
      min-height: 490px;
      padding: clamp(28px, 5vw, 56px);
      grid-row: span 2;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      background:
        linear-gradient(135deg, rgba(20,17,15,.46), rgba(20,17,15,.94)),
        radial-gradient(circle at 78% 16%, rgba(193,138,69,.30), transparent 24%),
        linear-gradient(160deg, #2B211B, #15110F 54%, #3A151A);
    }
    .hero-label {
      display: inline-flex;
      width: fit-content;
      padding: 8px 13px;
      border-radius: 999px;
      color: var(--paper);
      border: 1px solid rgba(193,138,69,.45);
      background: rgba(193,138,69,.12);
      font-size: 13px;
      font-weight: 800;
    }
    h1 {
      margin: 26px 0 18px;
      max-width: 760px;
      font-size: clamp(34px, 5vw, 56px);
      line-height: 1.12;
      font-weight: 800;
      letter-spacing: 0;
    }
    .hero-lead {
      max-width: 730px;
      margin: 0;
      color: rgba(244,239,231,.76);
      font-size: 18px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 30px;
    }
    .hero-points {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 28px;
    }
    .point-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(244,239,231,.08);
      border: 1px solid var(--line-dark);
      color: rgba(244,239,231,.76);
      font-size: 14px;
      font-weight: 700;
    }
    .point-dot {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--amber);
    }
    .hero-mini {
      padding: 24px;
      min-height: 220px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .hero-mini h2 {
      margin: 0 0 10px;
      font-size: 22px;
      font-weight: 800;
    }
    .hero-mini p {
      margin: 0;
      color: rgba(244,239,231,.68);
      font-size: 15px;
    }
    .check-list {
      display: grid;
      gap: 10px;
      margin: 18px 0 0;
      padding: 0;
      list-style: none;
    }
    .check-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: rgba(244,239,231,.78);
      font-size: 14px;
    }
    .check-list li::before {
      content: "";
      width: 9px;
      height: 9px;
      margin-top: 8px;
      flex: 0 0 9px;
      border-radius: 50%;
      background: var(--amber);
    }
    .hero-cta-strip {
      grid-column: 1 / -1;
      padding: 18px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      background: rgba(110,38,48,.36);
    }
    .hero-cta-strip p {
      margin: 0;
      color: rgba(244,239,231,.76);
      font-weight: 700;
    }

    .age-alert {
      margin-top: 28px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(193,138,69,.42);
      background: rgba(193,138,69,.10);
      padding: 16px 18px;
      color: rgba(244,239,231,.78);
      font-size: 14px;
    }

    .timeline {
      position: relative;
      display: grid;
      gap: 18px;
      margin-top: 36px;
    }
    .timeline::before {
      content: "";
      position: absolute;
      left: 20px;
      top: 12px;
      bottom: 12px;
      width: 1px;
      background: rgba(20,17,15,.16);
    }
    .timeline-item {
      position: relative;
      display: grid;
      grid-template-columns: 52px 1fr;
      gap: 18px;
      align-items: start;
    }
    .timeline-num {
      position: relative;
      z-index: 1;
      width: 42px;
      height: 42px;
      border-radius: 50%;
      display: grid;
      place-items: center;
      color: var(--ink);
      background: var(--amber);
      font-weight: 900;
      box-shadow: 0 0 0 8px var(--paper);
    }
    .timeline-card {
      border: 1px solid var(--line-light);
      border-radius: var(--radius-md);
      background: rgba(255,255,255,.38);
      padding: 18px 20px;
      transition: var(--ease);
    }
    .timeline-card:hover {
      transform: translateX(4px);
      box-shadow: var(--shadow-sm);
      border-color: rgba(193,138,69,.42);
    }
    .timeline-card h3 {
      margin: 0 0 6px;
      font-size: 20px;
      font-weight: 800;
    }
    .timeline-card p {
      margin: 0;
      color: #635D55;
      font-size: 15px;
    }

    .feature-masonry {
      margin-top: 38px;
      display: grid;
      grid-template-columns: 1.1fr .9fr 1fr;
      gap: 18px;
      align-items: stretch;
    }
    .feature-card {
      border-radius: var(--radius-md);
      border: 1px solid var(--line-light);
      background: rgba(255,255,255,.42);
      padding: 24px;
      min-height: 210px;
      box-shadow: var(--shadow-sm);
      transition: var(--ease);
    }
    .feature-card:nth-child(2) {
      margin-top: 34px;
      background: var(--ink);
      color: var(--paper);
      border-color: var(--line-dark);
    }
    .feature-card:nth-child(4) {
      grid-column: span 2;
      min-height: 170px;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .feature-no {
      color: var(--amber-dark);
      font-weight: 900;
      font-size: 13px;
    }
    .section-dark .feature-no,
    .feature-card:nth-child(2) .feature-no {
      color: var(--amber);
    }
    .feature-card h3 {
      margin: 12px 0 10px;
      font-size: 22px;
      font-weight: 800;
    }
    .feature-card p {
      margin: 0;
      color: #6A6259;
      font-size: 15px;
    }
    .feature-card:nth-child(2) p {
      color: rgba(244,239,231,.68);
    }

    .compare-grid {
      margin-top: 38px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .plan-card {
      position: relative;
      border-radius: var(--radius-md);
      border: 1px solid var(--line-light);
      background: rgba(255,255,255,.46);
      padding: 26px;
      min-height: 360px;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: var(--ease);
    }
    .plan-card.recommend {
      background: var(--ink);
      color: var(--paper);
      border-color: rgba(193,138,69,.58);
      transform: translateY(-10px);
    }
    .plan-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }
    .plan-card.recommend:hover {
      transform: translateY(-14px);
    }
    .plan-badge {
      width: fit-content;
      margin-bottom: 14px;
      padding: 6px 10px;
      border-radius: 999px;
      border: 1px solid rgba(193,138,69,.45);
      color: var(--amber-dark);
      font-size: 13px;
      font-weight: 900;
    }
    .recommend .plan-badge {
      color: var(--ink);
      background: var(--amber);
      border-color: var(--amber);
    }
    .plan-card h3 {
      margin: 0 0 8px;
      font-size: 23px;
      font-weight: 800;
    }
    .plan-card p {
      margin: 0 0 18px;
      color: #6A6259;
      font-size: 15px;
    }
    .recommend p {
      color: rgba(244,239,231,.68);
    }
    .plan-list {
      display: grid;
      gap: 11px;
      padding: 0;
      margin: 0 0 24px;
      list-style: none;
    }
    .plan-list li {
      display: flex;
      gap: 10px;
      font-size: 15px;
      color: #4C4741;
    }
    .recommend .plan-list li {
      color: rgba(244,239,231,.78);
    }
    .plan-list li::before {
      content: "•";
      color: var(--amber-dark);
      font-weight: 900;
    }
    .recommend .plan-list li::before {
      color: var(--amber);
    }
    .plan-card .btn-brand,
    .plan-card .btn-darkline {
      margin-top: auto;
      width: 100%;
    }

    .matrix-grid {
      margin-top: 34px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
    }
    .matrix-link {
      min-height: 132px;
      border-radius: var(--radius-md);
      border: 1px solid var(--line-dark);
      background: rgba(244,239,231,.06);
      color: var(--paper);
      padding: 18px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--ease);
    }
    .matrix-link:hover,
    .matrix-link:focus {
      color: var(--paper);
      border-color: var(--amber);
      background: rgba(193,138,69,.12);
      transform: translateY(-3px);
      outline: none;
    }
    .matrix-icon {
      width: 38px;
      height: 38px;
      border-radius: 13px;
      display: grid;
      place-items: center;
      color: var(--ink);
      background: var(--amber);
      font-weight: 900;
    }
    .matrix-link strong {
      font-size: 17px;
      margin-top: 16px;
    }
    .matrix-link span {
      color: rgba(244,239,231,.64);
      font-size: 13px;
    }

    .metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 34px;
    }
    .metric-card {
      border-radius: var(--radius-md);
      border: 1px solid var(--line-light);
      padding: 22px;
      background: rgba(255,255,255,.38);
    }
    .metric-card strong {
      display: block;
      font-size: 34px;
      line-height: 1;
      color: var(--wine);
      font-weight: 900;
    }
    .metric-card span {
      display: block;
      margin-top: 10px;
      color: #6A6259;
      font-size: 14px;
    }

    .before-after {
      margin-top: 38px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }
    .ba-card {
      border-radius: var(--radius-md);
      border: 1px solid var(--line-light);
      padding: 26px;
      background: rgba(255,255,255,.42);
    }
    .ba-card.dark {
      background: var(--ink);
      color: var(--paper);
      border-color: var(--line-dark);
    }
    .ba-card h3 {
      margin: 0 0 16px;
      font-size: 22px;
      font-weight: 800;
    }
    .ba-list {
      padding: 0;
      margin: 0;
      display: grid;
      gap: 12px;
      list-style: none;
    }
    .ba-list li {
      padding-left: 18px;
      position: relative;
      color: #625B53;
      font-size: 15px;
    }
    .ba-card.dark .ba-list li {
      color: rgba(244,239,231,.72);
    }
    .ba-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 11px;
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--amber);
    }

    .news-layout {
      margin-top: 36px;
      display: grid;
      grid-template-columns: 1.25fr .75fr;
      gap: 22px;
      align-items: start;
    }
    .news-list {
      border-radius: var(--radius-md);
      border: 1px solid var(--line-light);
      background: rgba(255,255,255,.40);
      overflow: hidden;
    }
    .news-item {
      display: grid;
      grid-template-columns: 96px 1fr auto;
      gap: 18px;
      align-items: center;
      padding: 20px 22px;
      border-bottom: 1px solid var(--line-light);
    }
    .news-item:last-child { border-bottom: 0; }
    .news-date {
      color: var(--wine);
      font-weight: 900;
      font-size: 14px;
    }
    .news-item h3 {
      margin: 0 0 4px;
      font-size: 18px;
      font-weight: 800;
    }
    .news-item p {
      margin: 0;
      color: #6A6259;
      font-size: 14px;
    }
    .news-item:hover {
      background: rgba(193,138,69,.08);
    }
    .news-arrow {
      color: var(--amber-dark);
      font-weight: 900;
    }
    .recommend-box {
      border-radius: var(--radius-md);
      border: 1px solid rgba(193,138,69,.36);
      background: var(--ink);
      color: var(--paper);
      padding: 24px;
      position: sticky;
      top: 100px;
    }
    .recommend-box h3 {
      margin: 0 0 12px;
      font-size: 22px;
      font-weight: 800;
    }
    .recommend-box p {
      color: rgba(244,239,231,.68);
      margin: 0 0 18px;
      font-size: 15px;
    }
    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
    }
    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 32px;
      padding: 6px 10px;
      border-radius: 999px;
      border: 1px solid rgba(193,138,69,.42);
      color: var(--amber);
      font-size: 13px;
      font-weight: 800;
      background: rgba(193,138,69,.08);
    }

    .accordion {
      margin-top: 34px;
      display: grid;
      gap: 12px;
    }
    .accordion-item {
      border: 1px solid var(--line-light) !important;
      border-radius: var(--radius-md) !important;
      overflow: hidden;
      background: rgba(255,255,255,.42);
    }
    .accordion-button {
      padding: 18px 22px;
      background: transparent;
      color: var(--ink);
      font-weight: 900;
      box-shadow: none !important;
    }
    .accordion-button:not(.collapsed) {
      color: var(--ink);
      background: rgba(193,138,69,.12);
      border-bottom: 1px solid rgba(193,138,69,.28);
    }
    .accordion-button:focus {
      border-color: var(--amber);
      box-shadow: 0 0 0 4px rgba(193,138,69,.18) !important;
    }
    .accordion-button::after {
      filter: grayscale(1);
    }
    .accordion-body {
      color: #625B53;
      padding: 18px 22px 22px;
      font-size: 15px;
    }

    .cta-band {
      border-radius: var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(20,17,15,.98), rgba(40,27,21,.96) 62%, rgba(110,38,48,.92)),
        radial-gradient(circle at 80% 20%, rgba(193,138,69,.26), transparent 30%);
      color: var(--paper);
      border: 1px solid var(--line-dark);
      padding: clamp(26px, 5vw, 46px);
      display: grid;
      grid-template-columns: 1fr .85fr;
      gap: 28px;
      align-items: center;
      box-shadow: var(--shadow-md);
    }
    .cta-band h2 {
      margin: 0 0 14px;
      font-size: clamp(28px, 4vw, 38px);
      font-weight: 800;
      line-height: 1.2;
    }
    .cta-band p {
      margin: 0;
      color: rgba(244,239,231,.70);
    }
    .form-panel {
      border-radius: var(--radius-md);
      border: 1px solid var(--line-dark);
      background: rgba(244,239,231,.07);
      padding: 20px;
    }
    .form-label {
      color: rgba(244,239,231,.82);
      font-size: 14px;
      font-weight: 800;
    }
    .form-select,
    .form-control {
      border-radius: 14px;
      border: 1px solid rgba(244,239,231,.18);
      background-color: rgba(244,239,231,.10);
      color: var(--paper);
      min-height: 48px;
      padding: 11px 14px;
    }
    .form-select option {
      color: var(--ink);
      background: var(--paper);
    }
    .form-select:focus,
    .form-control:focus {
      border-color: var(--amber);
      background-color: rgba(244,239,231,.12);
      color: var(--paper);
      box-shadow: 0 0 0 4px rgba(193,138,69,.18);
    }
    .form-check-input {
      border-color: rgba(244,239,231,.42);
      background-color: rgba(244,239,231,.08);
      width: 1.1em;
      height: 1.1em;
    }
    .form-check-input:checked {
      background-color: var(--amber);
      border-color: var(--amber);
    }
    .form-check-label {
      color: rgba(244,239,231,.74);
      font-size: 14px;
    }

    .site-footer {
      background: #0F0C0A;
      color: var(--paper);
      padding: 54px 0 30px;
      border-top: 1px solid rgba(244,239,231,.10);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr 1fr .9fr;
      gap: 28px;
      align-items: start;
    }
    .footer-title {
      margin: 0 0 12px;
      font-size: 20px;
      font-weight: 900;
    }
    .footer-text {
      margin: 0;
      color: rgba(244,239,231,.62);
      font-size: 14px;
    }
    .footer-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 9px;
    }
    .footer-chip {
      padding: 8px 12px;
      border-radius: 999px;
      border: 1px solid var(--line-dark);
      color: rgba(244,239,231,.76);
      font-size: 13px;
      font-weight: 800;
      background: rgba(244,239,231,.04);
    }
    .footer-chip:hover {
      color: var(--ink);
      background: var(--amber);
      border-color: var(--amber);
    }
    .footer-bottom {
      margin-top: 34px;
      padding-top: 22px;
      border-top: 1px solid rgba(244,239,231,.10);
      display: flex;
      justify-content: space-between;
      gap: 18px;
      color: rgba(244,239,231,.50);
      font-size: 13px;
    }

    .age-modal {
      position: fixed;
      inset: 0;
      z-index: 2000;
      display: none;
      place-items: center;
      padding: 18px;
      background: rgba(15,12,10,.76);
      backdrop-filter: blur(12px);
    }
    .age-modal.show { display: grid; }
    .age-dialog {
      width: min(560px, 100%);
      border-radius: var(--radius-lg);
      border: 1px solid rgba(193,138,69,.42);
      background: var(--paper);
      padding: 30px;
      box-shadow: 0 28px 90px rgba(0,0,0,.42);
    }
    .age-dialog h2 {
      margin: 0 0 12px;
      font-size: 28px;
      font-weight: 900;
    }
    .age-dialog p {
      color: #625B53;
      margin: 0 0 20px;
    }
    .age-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }

    @media (max-width: 1024px) {
      .nav-wrap {
        grid-template-columns: 1fr auto;
        padding: 14px 0;
      }
      .nav-chips {
        grid-column: 1 / -1;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 2px;
        scrollbar-width: none;
      }
      .nav-chips::-webkit-scrollbar { display: none; }
      .hero-bento,
      .cta-band,
      .news-layout {
        grid-template-columns: 1fr;
      }
      .hero-main {
        min-height: 430px;
      }
      .hero-cta-strip {
        grid-column: auto;
        flex-direction: column;
        align-items: flex-start;
      }
      .feature-masonry,
      .compare-grid {
        grid-template-columns: 1fr 1fr;
      }
      .feature-card:nth-child(4) {
        grid-column: span 1;
      }
      .matrix-grid,
      .metrics {
        grid-template-columns: repeat(2, 1fr);
      }
      .recommend-box {
        position: static;
      }
    }

    @media (max-width: 768px) {
      .section,
      .section-tight {
        padding: 62px 0;
      }
      .brand {
        font-size: 16px;
        min-width: 0;
      }
      .brand span:last-child {
        overflow: hidden;
        text-overflow: ellipsis;
      }
      .nav-cta {
        padding: 9px 13px;
        font-size: 13px;
      }
      .hero {
        padding-top: 30px;
      }
      .hero-main,
      .hero-mini,
      .hero-cta-strip {
        border-radius: 22px;
      }
      .hero-main {
        min-height: auto;
      }
      .hero-actions .btn-brand,
      .hero-actions .btn-ghost,
      .hero-cta-strip .btn-brand {
        width: 100%;
      }
      .feature-masonry,
      .compare-grid,
      .before-after,
      .matrix-grid,
      .metrics,
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .feature-card:nth-child(2),
      .plan-card.recommend {
        margin-top: 0;
        transform: none;
      }
      .plan-card.recommend:hover {
        transform: translateY(-5px);
      }
      .news-item {
        grid-template-columns: 1fr;
        gap: 8px;
      }
      .news-arrow {
        display: none;
      }
      .cta-band .btn-brand {
        width: 100%;
      }
      .footer-bottom {
        flex-direction: column;
      }
    }

    @media (max-width: 520px) {
      .container-xl {
        padding-left: 18px;
        padding-right: 18px;
      }
      h1 {
        font-size: 34px;
      }
      .hero-lead,
      .section-copy {
        font-size: 16px;
      }
      .hero-main {
        padding: 24px;
      }
      .hero-mini {
        padding: 20px;
      }
      .timeline {
        gap: 14px;
      }
      .timeline-item {
        grid-template-columns: 42px 1fr;
        gap: 12px;
      }
      .timeline-num {
        width: 36px;
        height: 36px;
        box-shadow: 0 0 0 6px var(--paper);
      }
      .timeline::before {
        left: 18px;
      }
      .age-dialog {
        padding: 24px;
      }
      .age-actions .btn-brand,
      .age-actions .btn-darkline {
        width: 100%;
      }
    }

/* roulang page: category1 */
:root {
      --ink: #14110f;
      --ink-soft: #231d19;
      --paper: #f4efe7;
      --paper-deep: #e7ddd0;
      --amber: #c18a45;
      --amber-dark: #a67133;
      --wine: #6e2630;
      --mist: #8d8982;
      --line-dark: rgba(244, 239, 231, .14);
      --line-light: rgba(20, 17, 15, .12);
      --shadow-soft: 0 18px 46px rgba(20, 17, 15, .12);
      --shadow-dark: 0 24px 70px rgba(0, 0, 0, .28);
      --radius-lg: 20px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --section: 88px;
      --font-cn: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: var(--font-cn);
      color: var(--ink);
      background: var(--paper);
      line-height: 1.72;
      text-rendering: optimizeLegibility;
    }

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

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

    button,
    input,
    select {
      font: inherit;
    }

    :focus-visible {
      outline: 3px solid rgba(193, 138, 69, .45);
      outline-offset: 3px;
    }

    .container-xl {
      max-width: 1200px;
    }

    .topbar {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(244, 239, 231, .92);
      border-bottom: 1px solid var(--line-light);
      backdrop-filter: blur(16px);
    }

    .nav-wrap {
      min-height: 78px;
      display: grid;
      grid-template-columns: auto 1fr auto;
      align-items: center;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      color: var(--ink);
      line-height: 1.2;
      white-space: nowrap;
    }

    .brand:hover {
      color: var(--wine);
    }

    .brand-mark {
      width: 34px;
      height: 34px;
      border-radius: 50%;
      background:
        linear-gradient(135deg, var(--amber), var(--wine));
      position: relative;
      box-shadow: inset 0 0 0 6px rgba(244, 239, 231, .22), 0 8px 20px rgba(110, 38, 48, .22);
      flex: 0 0 auto;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 12px 7px;
      border-top: 2px solid rgba(244, 239, 231, .88);
      border-bottom: 2px solid rgba(244, 239, 231, .88);
    }

    .nav-chips {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 8px;
      overflow-x: auto;
      scrollbar-width: none;
      padding: 8px 0;
    }

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

    .nav-chip,
    .footer-chip,
    .filter-chip {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 38px;
      padding: 8px 15px;
      border-radius: 999px;
      border: 1px solid var(--line-light);
      color: rgba(20, 17, 15, .78);
      background: rgba(255, 255, 255, .28);
      font-size: 14px;
      font-weight: 600;
      white-space: nowrap;
    }

    .nav-chip:hover,
    .footer-chip:hover,
    .filter-chip:hover {
      border-color: rgba(193, 138, 69, .52);
      color: var(--ink);
      transform: translateY(-1px);
    }

    .nav-chip.active {
      background: var(--amber);
      border-color: var(--amber);
      color: var(--ink);
      box-shadow: 0 10px 24px rgba(193, 138, 69, .22);
    }

    .nav-cta,
    .btn-primary-custom {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border: 0;
      border-radius: 999px;
      background: var(--amber);
      color: var(--ink);
      min-height: 44px;
      padding: 10px 18px;
      font-weight: 800;
      box-shadow: 0 14px 28px rgba(193, 138, 69, .24);
    }

    .nav-cta:hover,
    .btn-primary-custom:hover {
      background: var(--amber-dark);
      color: var(--ink);
      transform: translateY(-2px);
      box-shadow: 0 18px 34px rgba(193, 138, 69, .32);
    }

    .btn-secondary-custom {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 10px 18px;
      border-radius: 999px;
      border: 1px solid rgba(20, 17, 15, .18);
      color: var(--ink);
      background: transparent;
      font-weight: 700;
    }

    .btn-secondary-custom:hover {
      border-color: var(--amber);
      background: rgba(193, 138, 69, .09);
      color: var(--ink);
      transform: translateY(-1px);
    }

    .page-hero {
      background:
        linear-gradient(90deg, rgba(20, 17, 15, .90), rgba(20, 17, 15, .68)),
        repeating-linear-gradient(90deg, rgba(244, 239, 231, .04) 0 1px, transparent 1px 28px),
        linear-gradient(135deg, var(--ink), #32231d 55%, #4a2226);
      color: var(--paper);
      min-height: 420px;
      display: flex;
      align-items: stretch;
      position: relative;
      overflow: hidden;
    }

    .page-hero::after {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        radial-gradient(rgba(244, 239, 231, .08) 1px, transparent 1px);
      background-size: 4px 4px;
      opacity: .38;
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr);
      gap: 42px;
      align-items: center;
      padding: 64px 0 58px;
    }

    .breadcrumb-line {
      display: flex;
      align-items: center;
      gap: 8px;
      color: rgba(244, 239, 231, .62);
      font-size: 13px;
      margin-bottom: 22px;
    }

    .breadcrumb-line a:hover {
      color: var(--amber);
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--amber);
      font-size: 14px;
      font-weight: 800;
      margin-bottom: 14px;
    }

    h1 {
      margin: 0;
      max-width: 820px;
      font-size: clamp(34px, 5vw, 54px);
      line-height: 1.12;
      font-weight: 800;
    }

    .hero-copy {
      max-width: 760px;
      margin: 20px 0 0;
      color: rgba(244, 239, 231, .78);
      font-size: 17px;
    }

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

    .hero-panel {
      border: 1px solid var(--line-dark);
      border-radius: var(--radius-lg);
      background: rgba(244, 239, 231, .08);
      box-shadow: var(--shadow-dark);
      padding: 22px;
    }

    .panel-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding-bottom: 14px;
      border-bottom: 1px solid var(--line-dark);
      font-weight: 800;
      color: var(--paper);
    }

    .panel-title span:last-child {
      color: var(--amber);
      font-size: 13px;
      font-weight: 700;
    }

    .check-list {
      list-style: none;
      padding: 0;
      margin: 18px 0 0;
      display: grid;
      gap: 13px;
    }

    .check-list li {
      display: grid;
      grid-template-columns: 28px 1fr;
      gap: 10px;
      color: rgba(244, 239, 231, .78);
      font-size: 14px;
    }

    .check-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(193, 138, 69, .15);
      color: var(--amber);
    }

    main {
      background: var(--paper);
    }

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

    .section-tight {
      padding: 64px 0;
    }

    .section-dark {
      background: var(--ink);
      color: var(--paper);
    }

    .section-kicker {
      color: var(--wine);
      font-size: 14px;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .section-dark .section-kicker {
      color: var(--amber);
    }

    .section-title {
      font-size: clamp(28px, 3.6vw, 38px);
      line-height: 1.2;
      font-weight: 800;
      margin: 0;
    }

    .section-lead {
      color: rgba(20, 17, 15, .66);
      max-width: 720px;
      margin-top: 14px;
      font-size: 16px;
    }

    .section-dark .section-lead {
      color: rgba(244, 239, 231, .66);
    }

    .filter-strip {
      display: flex;
      gap: 10px;
      overflow-x: auto;
      padding: 6px 2px 16px;
      scrollbar-width: none;
    }

    .filter-strip::-webkit-scrollbar {
      display: none;
    }

    .filter-chip.active {
      background: var(--ink);
      color: var(--paper);
      border-color: var(--ink);
    }

    .entry-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.18fr) minmax(280px, .82fr);
      gap: 24px;
      align-items: stretch;
      margin-top: 28px;
    }

    .feature-entry,
    .side-entry,
    .topic-bar,
    .rule-box,
    .compare-card,
    .note-card {
      border: 1px solid var(--line-light);
      background: rgba(255, 255, 255, .38);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-soft);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }

    .feature-entry:hover,
    .side-entry:hover,
    .topic-bar:hover,
    .compare-card:hover,
    .note-card:hover {
      transform: translateY(-3px);
      border-color: rgba(193, 138, 69, .38);
      box-shadow: 0 22px 52px rgba(20, 17, 15, .16);
    }

    .feature-entry {
      min-height: 100%;
      padding: 30px;
      display: grid;
      grid-template-rows: auto 1fr auto;
      gap: 24px;
      overflow: hidden;
      position: relative;
    }

    .feature-entry::before {
      content: "";
      position: absolute;
      inset: 0 0 auto;
      height: 8px;
      background: linear-gradient(90deg, var(--amber), var(--wine));
    }

    .entry-number {
      color: var(--amber-dark);
      font-weight: 800;
      font-size: 13px;
    }

    .entry-title {
      margin: 8px 0 10px;
      font-size: 26px;
      line-height: 1.28;
      font-weight: 800;
    }

    .entry-copy {
      color: rgba(20, 17, 15, .68);
      margin: 0;
    }

    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 18px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border: 1px solid rgba(193, 138, 69, .45);
      border-radius: 999px;
      color: var(--amber-dark);
      background: rgba(193, 138, 69, .08);
      padding: 6px 11px;
      font-size: 13px;
      font-weight: 700;
    }

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

    .side-entry {
      padding: 20px;
    }

    .side-entry h2,
    .topic-bar h2,
    .rule-box h2,
    .compare-card h2,
    .note-card h2 {
      font-size: 20px;
      line-height: 1.3;
      font-weight: 800;
      margin: 0 0 9px;
    }

    .side-entry p,
    .topic-bar p,
    .rule-box p,
    .compare-card p,
    .note-card p {
      color: rgba(20, 17, 15, .66);
      margin: 0;
      font-size: 15px;
    }

    .entry-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 16px;
      align-items: center;
      margin-top: 16px;
      color: var(--mist);
      font-size: 13px;
      font-weight: 600;
    }

    .topic-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      margin-top: 18px;
    }

    .topic-bar {
      padding: 22px;
      display: grid;
      grid-template-columns: 48px 1fr;
      gap: 16px;
      align-items: start;
      box-shadow: none;
    }

    .topic-icon {
      width: 48px;
      height: 48px;
      border-radius: 16px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--ink);
      color: var(--amber);
      font-size: 21px;
    }

    .timeline {
      position: relative;
      display: grid;
      gap: 18px;
      margin-top: 32px;
      padding-left: 28px;
    }

    .timeline::before {
      content: "";
      position: absolute;
      left: 10px;
      top: 8px;
      bottom: 8px;
      width: 2px;
      background: rgba(193, 138, 69, .34);
    }

    .timeline-item {
      position: relative;
      display: grid;
      grid-template-columns: 92px 1fr;
      gap: 18px;
      align-items: start;
      padding: 18px 0;
      border-bottom: 1px solid var(--line-light);
    }

    .timeline-item::before {
      content: "";
      position: absolute;
      left: -24px;
      top: 28px;
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: var(--amber);
      box-shadow: 0 0 0 6px rgba(193, 138, 69, .16);
    }

    .time-code {
      color: var(--wine);
      font-weight: 800;
      font-size: 14px;
    }

    .timeline-item h2 {
      font-size: 20px;
      font-weight: 800;
      margin: 0 0 6px;
    }

    .timeline-item p {
      margin: 0;
      color: rgba(20, 17, 15, .66);
    }

    .rule-box {
      padding: 28px;
      background: var(--ink-soft);
      border-color: var(--line-dark);
      color: var(--paper);
      box-shadow: var(--shadow-dark);
    }

    .rule-box p {
      color: rgba(244, 239, 231, .68);
    }

    .rule-list {
      list-style: none;
      padding: 0;
      margin: 20px 0 0;
      display: grid;
      gap: 12px;
    }

    .rule-list li {
      display: grid;
      grid-template-columns: 28px 1fr;
      gap: 10px;
      color: rgba(244, 239, 231, .78);
      font-size: 15px;
    }

    .compare-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
      margin-top: 30px;
    }

    .compare-card {
      padding: 24px;
      display: flex;
      flex-direction: column;
      min-height: 100%;
    }

    .compare-card.featured {
      background: var(--ink);
      color: var(--paper);
      border-color: rgba(193, 138, 69, .5);
    }

    .compare-card.featured p,
    .compare-card.featured li {
      color: rgba(244, 239, 231, .72);
    }

    .compare-card ul {
      padding: 0;
      margin: 18px 0 24px;
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .compare-card li {
      color: rgba(20, 17, 15, .68);
      font-size: 15px;
      display: flex;
      gap: 8px;
    }

    .compare-card li i {
      color: var(--amber);
      flex: 0 0 auto;
      margin-top: 4px;
    }

    .compare-card .btn-primary-custom,
    .compare-card .btn-secondary-custom {
      margin-top: auto;
      width: 100%;
    }

    .age-band {
      border-radius: 26px;
      background:
        linear-gradient(115deg, rgba(20, 17, 15, .98), rgba(54, 31, 27, .96));
      color: var(--paper);
      padding: 38px;
      box-shadow: var(--shadow-dark);
      position: relative;
      overflow: hidden;
    }

    .age-band::after {
      content: "";
      position: absolute;
      inset: 0;
      background-image: repeating-linear-gradient(90deg, rgba(244, 239, 231, .05) 0 1px, transparent 1px 26px);
      opacity: .5;
      pointer-events: none;
    }

    .age-band-inner {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1fr) 420px;
      gap: 30px;
      align-items: center;
    }

    .age-band h2 {
      font-size: clamp(26px, 3.2vw, 36px);
      font-weight: 800;
      line-height: 1.22;
      margin: 0 0 12px;
    }

    .age-band p {
      color: rgba(244, 239, 231, .72);
      margin: 0;
    }

    .confirm-box {
      border: 1px solid var(--line-dark);
      border-radius: var(--radius-md);
      background: rgba(244, 239, 231, .08);
      padding: 20px;
    }

    .form-check {
      margin-bottom: 12px;
    }

    .form-check-input {
      border-color: rgba(244, 239, 231, .42);
      background-color: transparent;
      width: 1.15em;
      height: 1.15em;
    }

    .form-check-input:checked {
      background-color: var(--amber);
      border-color: var(--amber);
    }

    .form-check-label {
      color: rgba(244, 239, 231, .82);
      font-size: 14px;
    }

    .form-select {
      min-height: 46px;
      border-radius: 14px;
      border-color: rgba(244, 239, 231, .2);
      background-color: rgba(244, 239, 231, .08);
      color: var(--paper);
      margin: 12px 0;
    }

    .form-select:focus {
      border-color: var(--amber);
      box-shadow: 0 0 0 .25rem rgba(193, 138, 69, .18);
    }

    .form-select option {
      color: var(--ink);
    }

    .accordion {
      --bs-accordion-border-color: rgba(20, 17, 15, .12);
      --bs-accordion-border-radius: 18px;
      --bs-accordion-inner-border-radius: 18px;
      display: grid;
      gap: 12px;
      margin-top: 30px;
    }

    .accordion-item {
      border: 1px solid var(--line-light);
      border-radius: 18px !important;
      overflow: hidden;
      background: rgba(255, 255, 255, .34);
      box-shadow: 0 12px 30px rgba(20, 17, 15, .07);
    }

    .accordion-button {
      background: transparent;
      color: var(--ink);
      font-weight: 800;
      padding: 18px 20px;
      box-shadow: none;
    }

    .accordion-button:not(.collapsed) {
      color: var(--ink);
      background: rgba(193, 138, 69, .1);
      box-shadow: inset 0 -1px 0 rgba(193, 138, 69, .2);
    }

    .accordion-button:focus {
      box-shadow: 0 0 0 .25rem rgba(193, 138, 69, .16);
      border-color: var(--amber);
    }

    .accordion-body {
      color: rgba(20, 17, 15, .68);
      padding: 18px 20px 22px;
    }

    .site-footer {
      background: var(--ink);
      color: var(--paper);
      padding: 58px 0 28px;
      border-top: 1px solid var(--line-dark);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr .9fr;
      gap: 34px;
      align-items: start;
    }

    .site-footer .brand {
      color: var(--paper);
    }

    .footer-text {
      color: rgba(244, 239, 231, .62);
      margin: 0;
      font-size: 14px;
    }

    .footer-title {
      font-size: 16px;
      font-weight: 800;
      margin: 0 0 14px;
      color: var(--paper);
    }

    .footer-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .footer-chip {
      border-color: var(--line-dark);
      color: rgba(244, 239, 231, .76);
      background: rgba(244, 239, 231, .04);
    }

    .footer-chip:hover {
      color: var(--paper);
      border-color: var(--amber);
      background: rgba(193, 138, 69, .12);
    }

    .footer-bottom {
      margin-top: 34px;
      padding-top: 22px;
      border-top: 1px solid var(--line-dark);
      display: flex;
      justify-content: space-between;
      gap: 18px;
      color: rgba(244, 239, 231, .48);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      .nav-wrap {
        grid-template-columns: 1fr auto;
        gap: 10px 16px;
        padding: 12px 0;
      }

      .nav-chips {
        grid-column: 1 / -1;
        justify-content: flex-start;
        order: 3;
      }

      .hero-inner,
      .entry-layout,
      .age-band-inner {
        grid-template-columns: 1fr;
      }

      .hero-panel {
        max-width: 620px;
      }

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

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

    @media (max-width: 768px) {
      :root {
        --section: 62px;
      }

      .nav-wrap {
        min-height: auto;
      }

      .brand {
        font-size: 15px;
        min-width: 0;
      }

      .brand span:last-child {
        white-space: normal;
      }

      .brand-mark {
        width: 30px;
        height: 30px;
      }

      .nav-cta {
        min-height: 40px;
        padding: 8px 13px;
        font-size: 13px;
      }

      .page-hero {
        min-height: auto;
      }

      .hero-inner {
        padding: 48px 0 44px;
        gap: 28px;
      }

      .hero-actions,
      .feature-entry .d-flex,
      .age-band .d-flex {
        flex-direction: column;
        align-items: stretch !important;
      }

      .btn-primary-custom,
      .btn-secondary-custom {
        width: 100%;
      }

      .entry-layout,
      .topic-grid {
        grid-template-columns: 1fr;
      }

      .feature-entry,
      .age-band,
      .rule-box {
        padding: 24px;
        border-radius: 20px;
      }

      .topic-bar {
        grid-template-columns: 42px 1fr;
      }

      .timeline {
        padding-left: 24px;
      }

      .timeline-item {
        grid-template-columns: 1fr;
        gap: 6px;
      }

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

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

    @media (max-width: 520px) {
      h1 {
        font-size: 32px;
      }

      .hero-copy,
      .section-lead {
        font-size: 15px;
      }

      .nav-chip,
      .footer-chip,
      .filter-chip {
        min-height: 36px;
        padding: 7px 12px;
        font-size: 13px;
      }

      .hero-panel,
      .feature-entry,
      .side-entry,
      .topic-bar,
      .compare-card,
      .rule-box,
      .age-band {
        border-radius: 16px;
      }

      .entry-title {
        font-size: 22px;
      }
    }

/* roulang page: category2 */
:root {
      --ink: #14110f;
      --paper: #f4efe7;
      --paper-soft: #fbf7f0;
      --amber: #c18a45;
      --amber-dark: #a66f2e;
      --wine: #6e2630;
      --fog: #8d8982;
      --line: rgba(20, 17, 15, .13);
      --line-dark: rgba(244, 239, 231, .16);
      --shadow: 0 22px 60px rgba(20, 17, 15, .12);
      --shadow-soft: 0 12px 34px rgba(20, 17, 15, .08);
      --radius-lg: 20px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --ease: all .22s ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      color: var(--ink);
      background:
        radial-gradient(circle at 15% 12%, rgba(193, 138, 69, .12), transparent 28%),
        linear-gradient(180deg, #fffaf2 0%, var(--paper) 44%, #efe7dc 100%);
      line-height: 1.75;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--ease);
    }

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

    button,
    input,
    select {
      font: inherit;
    }

    ::selection {
      background: rgba(193, 138, 69, .32);
      color: var(--ink);
    }

    .container-xl {
      max-width: 1220px;
    }

    .topbar {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(244, 239, 231, .94);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(16px);
    }

    .nav-wrap {
      min-height: 76px;
      display: grid;
      grid-template-columns: auto 1fr auto;
      align-items: center;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 11px;
      font-weight: 800;
      color: var(--ink);
      white-space: nowrap;
    }

    .brand:hover {
      color: var(--wine);
    }

    .brand-mark {
      width: 30px;
      height: 30px;
      border-radius: 50%;
      display: inline-block;
      background:
        linear-gradient(135deg, var(--amber), #e1b36b 48%, var(--wine) 49%, var(--wine));
      box-shadow: inset 0 0 0 5px rgba(20, 17, 15, .12);
      position: relative;
      flex: 0 0 auto;
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      inset: 9px;
      border-radius: 50%;
      background: var(--paper);
    }

    .nav-chips {
      display: flex;
      justify-content: center;
      gap: 10px;
      overflow-x: auto;
      scrollbar-width: none;
      padding: 6px 0;
    }

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

    .nav-chip,
    .footer-chip,
    .filter-chip {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 38px;
      padding: 8px 16px;
      border: 1px solid var(--line);
      border-radius: 999px;
      color: rgba(20, 17, 15, .76);
      background: rgba(255, 250, 242, .58);
      font-size: 14px;
      font-weight: 650;
      white-space: nowrap;
    }

    .nav-chip:hover,
    .footer-chip:hover,
    .filter-chip:hover {
      border-color: rgba(193, 138, 69, .72);
      color: var(--ink);
      transform: translateY(-1px);
      background: rgba(193, 138, 69, .12);
    }

    .nav-chip.active,
    .filter-chip.active {
      color: var(--ink);
      background: var(--amber);
      border-color: var(--amber);
      box-shadow: 0 10px 24px rgba(193, 138, 69, .24);
    }

    .nav-cta,
    .btn-primary-custom {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 11px 18px;
      border-radius: 999px;
      border: 1px solid var(--amber);
      background: var(--amber);
      color: var(--ink);
      font-weight: 800;
      box-shadow: 0 14px 32px rgba(193, 138, 69, .24);
      transition: var(--ease);
      white-space: nowrap;
    }

    .nav-cta:hover,
    .btn-primary-custom:hover {
      background: var(--amber-dark);
      border-color: var(--amber-dark);
      color: var(--ink);
      transform: translateY(-2px);
      box-shadow: 0 18px 38px rgba(166, 111, 46, .28);
    }

    .btn-secondary-custom {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 11px 18px;
      border-radius: 999px;
      border: 1px solid rgba(20, 17, 15, .22);
      background: transparent;
      color: var(--ink);
      font-weight: 750;
      transition: var(--ease);
    }

    .btn-secondary-custom:hover {
      border-color: var(--wine);
      color: var(--wine);
      background: rgba(110, 38, 48, .06);
      transform: translateY(-1px);
    }

    .btn-primary-custom:focus,
    .btn-secondary-custom:focus,
    .nav-chip:focus,
    .nav-cta:focus,
    .form-control:focus,
    .form-select:focus,
    .form-check-input:focus {
      outline: 3px solid rgba(193, 138, 69, .32);
      outline-offset: 2px;
      box-shadow: none;
    }

    .page-hero {
      background: var(--paper-soft);
      border-bottom: 1px solid var(--line);
      padding: 34px 0 46px;
    }

    .breadcrumb-custom {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--fog);
      font-size: 13px;
      margin-bottom: 22px;
    }

    .breadcrumb-custom a:hover {
      color: var(--wine);
    }

    .hero-band {
      position: relative;
      min-height: 300px;
      border-radius: var(--radius-lg);
      overflow: hidden;
      background:
        linear-gradient(90deg, rgba(20, 17, 15, .92), rgba(20, 17, 15, .72) 48%, rgba(110, 38, 48, .58)),
        repeating-linear-gradient(90deg, rgba(244, 239, 231, .08) 0 1px, transparent 1px 18px),
        radial-gradient(circle at 80% 30%, rgba(193, 138, 69, .42), transparent 34%),
        linear-gradient(135deg, #221a16, #3b221f);
      box-shadow: var(--shadow);
      color: var(--paper);
    }

    .hero-band::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        radial-gradient(rgba(244, 239, 231, .18) 1px, transparent 1px),
        linear-gradient(180deg, transparent, rgba(20, 17, 15, .45));
      background-size: 18px 18px, 100% 100%;
      opacity: .36;
      pointer-events: none;
    }

    .hero-inner {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) minmax(300px, .8fr);
      gap: 36px;
      align-items: center;
      padding: 42px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 12px;
      border: 1px solid rgba(244, 239, 231, .22);
      border-radius: 999px;
      color: #e7d2ae;
      font-size: 13px;
      font-weight: 700;
      background: rgba(20, 17, 15, .22);
      margin-bottom: 16px;
    }

    h1 {
      font-size: clamp(32px, 4vw, 52px);
      line-height: 1.12;
      margin: 0 0 18px;
      font-weight: 850;
    }

    .hero-copy {
      max-width: 720px;
      color: rgba(244, 239, 231, .82);
      font-size: 17px;
      margin: 0;
    }

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

    .hero-panel {
      background: rgba(244, 239, 231, .1);
      border: 1px solid rgba(244, 239, 231, .18);
      border-radius: var(--radius-md);
      padding: 22px;
      backdrop-filter: blur(10px);
    }

    .hero-panel-title {
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .check-list {
      display: grid;
      gap: 12px;
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .check-list li {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: rgba(244, 239, 231, .82);
      font-size: 14px;
    }

    .check-list i {
      color: var(--amber);
      margin-top: 2px;
      flex: 0 0 auto;
    }

    main {
      background: linear-gradient(180deg, var(--paper) 0%, #fffaf2 58%, var(--paper) 100%);
    }

    .section {
      padding: 86px 0;
    }

    .section.tight {
      padding: 64px 0;
    }

    .section-dark {
      background: var(--ink);
      color: var(--paper);
      position: relative;
      overflow: hidden;
    }

    .section-dark::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(90deg, rgba(193, 138, 69, .08), transparent 46%),
        repeating-linear-gradient(0deg, rgba(244, 239, 231, .04) 0 1px, transparent 1px 12px);
      pointer-events: none;
    }

    .section-dark > .container-xl {
      position: relative;
    }

    .section-kicker {
      color: var(--wine);
      font-size: 14px;
      font-weight: 850;
      margin-bottom: 10px;
    }

    .section-dark .section-kicker {
      color: #e1b36b;
    }

    .section-title {
      font-size: clamp(28px, 3vw, 38px);
      line-height: 1.22;
      font-weight: 850;
      margin: 0 0 12px;
    }

    .section-lead {
      color: rgba(20, 17, 15, .66);
      font-size: 16px;
      max-width: 760px;
      margin: 0;
    }

    .section-dark .section-lead {
      color: rgba(244, 239, 231, .72);
    }

    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
    }

    .filter-chip {
      background: rgba(244, 239, 231, .78);
    }

    .feature-note {
      border-left: 4px solid var(--amber);
      padding: 18px 20px;
      background: rgba(193, 138, 69, .1);
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      color: rgba(20, 17, 15, .74);
    }

    .matrix-grid {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 22px;
      margin-top: 32px;
    }

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

    .entry-card,
    .rule-card,
    .compare-card,
    .timeline-item {
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: rgba(255, 250, 242, .84);
      box-shadow: var(--shadow-soft);
      transition: var(--ease);
    }

    .entry-card:hover,
    .rule-card:hover,
    .compare-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow);
      border-color: rgba(193, 138, 69, .45);
    }

    .entry-card {
      min-height: 190px;
      padding: 22px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .entry-icon {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(193, 138, 69, .18);
      color: var(--wine);
      font-size: 20px;
      margin-bottom: 18px;
    }

    .entry-card h2,
    .rule-card h2,
    .compare-card h2 {
      font-size: 21px;
      line-height: 1.35;
      font-weight: 850;
      margin: 0 0 10px;
    }

    .entry-card p,
    .rule-card p,
    .compare-card p {
      margin: 0;
      color: rgba(20, 17, 15, .66);
      font-size: 15px;
    }

    .side-paper {
      border-radius: var(--radius-lg);
      border: 1px solid var(--line);
      background:
        linear-gradient(180deg, rgba(255, 250, 242, .94), rgba(244, 239, 231, .92)),
        repeating-linear-gradient(90deg, rgba(20, 17, 15, .05) 0 1px, transparent 1px 20px);
      padding: 28px;
      box-shadow: var(--shadow-soft);
    }

    .side-paper h2 {
      font-size: 24px;
      font-weight: 850;
      margin: 0 0 14px;
    }

    .side-paper ul {
      padding: 0;
      margin: 22px 0 0;
      list-style: none;
      display: grid;
      gap: 14px;
    }

    .side-paper li {
      display: grid;
      grid-template-columns: 34px 1fr;
      gap: 12px;
      align-items: flex-start;
      color: rgba(20, 17, 15, .7);
    }

    .side-paper b {
      color: var(--ink);
    }

    .number-dot {
      width: 34px;
      height: 34px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--ink);
      color: var(--paper);
      font-weight: 850;
      font-size: 13px;
    }

    .mid-cta {
      border-radius: var(--radius-lg);
      padding: 34px;
      background:
        linear-gradient(135deg, rgba(20, 17, 15, .96), rgba(110, 38, 48, .92)),
        radial-gradient(circle at 85% 30%, rgba(193, 138, 69, .34), transparent 34%);
      color: var(--paper);
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 24px;
      align-items: center;
      box-shadow: var(--shadow);
    }

    .mid-cta h2 {
      font-size: clamp(24px, 3vw, 34px);
      font-weight: 850;
      margin: 0 0 8px;
    }

    .mid-cta p {
      margin: 0;
      color: rgba(244, 239, 231, .72);
    }

    .mid-cta .btn-secondary-custom {
      color: var(--paper);
      border-color: rgba(244, 239, 231, .28);
    }

    .mid-cta .btn-secondary-custom:hover {
      background: rgba(244, 239, 231, .08);
      color: var(--paper);
      border-color: var(--amber);
    }

    .update-layout {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 36px;
      align-items: start;
      margin-top: 34px;
    }

    .update-summary {
      position: sticky;
      top: 100px;
      border: 1px solid var(--line-dark);
      border-radius: var(--radius-lg);
      padding: 28px;
      background: rgba(244, 239, 231, .08);
    }

    .update-summary h2 {
      font-size: 24px;
      font-weight: 850;
      margin-bottom: 14px;
    }

    .update-summary p {
      color: rgba(244, 239, 231, .72);
      margin: 0 0 18px;
    }

    .safe-meter {
      display: grid;
      gap: 12px;
      margin-top: 22px;
    }

    .meter-row {
      display: grid;
      grid-template-columns: 88px 1fr;
      gap: 12px;
      align-items: center;
      font-size: 14px;
      color: rgba(244, 239, 231, .78);
    }

    .meter-bar {
      height: 8px;
      border-radius: 999px;
      background: rgba(244, 239, 231, .12);
      overflow: hidden;
    }

    .meter-bar span {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: var(--amber);
    }

    .timeline {
      position: relative;
      display: grid;
      gap: 18px;
    }

    .timeline::before {
      content: "";
      position: absolute;
      left: 21px;
      top: 14px;
      bottom: 14px;
      width: 1px;
      background: rgba(244, 239, 231, .18);
    }

    .timeline-item {
      position: relative;
      padding: 22px 22px 22px 70px;
      background: rgba(244, 239, 231, .08);
      border-color: var(--line-dark);
      color: var(--paper);
      box-shadow: none;
    }

    .timeline-index {
      position: absolute;
      left: 0;
      top: 22px;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--amber);
      color: var(--ink);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      z-index: 1;
    }

    .timeline-item h2 {
      font-size: 21px;
      font-weight: 850;
      margin: 0 0 8px;
    }

    .timeline-item p {
      margin: 0;
      color: rgba(244, 239, 231, .72);
      font-size: 15px;
    }

    .compare-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
      margin-top: 34px;
    }

    .compare-card {
      padding: 24px;
    }

    .compare-card.highlight {
      background: var(--ink);
      color: var(--paper);
      border-color: rgba(193, 138, 69, .48);
    }

    .compare-card.highlight p,
    .compare-card.highlight li {
      color: rgba(244, 239, 231, .72);
    }

    .compare-card ul {
      padding: 0;
      margin: 18px 0 22px;
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .compare-card li {
      color: rgba(20, 17, 15, .68);
      display: flex;
      gap: 9px;
      align-items: flex-start;
      font-size: 15px;
    }

    .compare-card li i {
      color: var(--amber);
      margin-top: 3px;
    }

    .rule-strip {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
      margin-top: 32px;
    }

    .rule-card {
      padding: 22px;
      min-height: 180px;
      background: rgba(255, 250, 242, .82);
    }

    .rule-label {
      display: inline-flex;
      margin-bottom: 18px;
      padding: 5px 10px;
      border-radius: 999px;
      border: 1px solid rgba(193, 138, 69, .4);
      color: var(--wine);
      font-size: 13px;
      font-weight: 800;
    }

    .age-box {
      border-radius: var(--radius-lg);
      background: rgba(255, 250, 242, .9);
      border: 1px solid var(--line);
      box-shadow: var(--shadow-soft);
      padding: 30px;
    }

    .form-control,
    .form-select {
      border-radius: 14px;
      border: 1px solid rgba(20, 17, 15, .18);
      background-color: #fffaf2;
      min-height: 48px;
      color: var(--ink);
    }

    .form-control:focus,
    .form-select:focus {
      border-color: var(--amber);
      background-color: #fffaf2;
    }

    .form-check-input {
      width: 1.15em;
      height: 1.15em;
      border-color: rgba(20, 17, 15, .36);
    }

    .form-check-input:checked {
      background-color: var(--amber);
      border-color: var(--amber);
    }

    .form-text-custom {
      color: rgba(20, 17, 15, .58);
      font-size: 13px;
      margin-top: 8px;
    }

    .accordion {
      --bs-accordion-border-color: rgba(20, 17, 15, .12);
      --bs-accordion-border-radius: 16px;
      --bs-accordion-inner-border-radius: 16px;
      --bs-accordion-btn-focus-box-shadow: 0 0 0 .22rem rgba(193, 138, 69, .22);
      --bs-accordion-active-bg: rgba(193, 138, 69, .12);
      --bs-accordion-active-color: #14110f;
      display: grid;
      gap: 12px;
    }

    .accordion-item {
      border-radius: var(--radius-md) !important;
      overflow: hidden;
      background: rgba(255, 250, 242, .8);
      border: 1px solid var(--line);
      box-shadow: 0 8px 24px rgba(20, 17, 15, .06);
    }

    .accordion-button {
      font-weight: 800;
      background: rgba(255, 250, 242, .86);
      color: var(--ink);
      padding: 18px 22px;
    }

    .accordion-button:not(.collapsed) {
      box-shadow: inset 0 -1px 0 rgba(20, 17, 15, .08);
    }

    .accordion-button::after {
      filter: grayscale(1);
    }

    .accordion-body {
      color: rgba(20, 17, 15, .68);
      padding: 18px 22px 22px;
    }

    .site-footer {
      background: var(--ink);
      color: var(--paper);
      padding: 58px 0 26px;
      border-top: 1px solid rgba(244, 239, 231, .12);
    }

    .site-footer .brand {
      color: var(--paper);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr 1fr;
      gap: 36px;
      align-items: start;
    }

    .footer-text {
      color: rgba(244, 239, 231, .64);
      margin: 0;
      max-width: 420px;
      font-size: 14px;
    }

    .footer-title {
      font-size: 16px;
      font-weight: 850;
      margin: 0 0 16px;
      color: #eadac1;
    }

    .footer-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .footer-chip {
      color: rgba(244, 239, 231, .78);
      border-color: rgba(244, 239, 231, .16);
      background: rgba(244, 239, 231, .05);
    }

    .footer-chip:hover {
      color: var(--paper);
      background: rgba(193, 138, 69, .14);
    }

    .footer-bottom {
      margin-top: 38px;
      padding-top: 22px;
      border-top: 1px solid rgba(244, 239, 231, .12);
      display: flex;
      justify-content: space-between;
      gap: 18px;
      color: rgba(244, 239, 231, .52);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      .nav-wrap {
        grid-template-columns: 1fr auto;
        gap: 14px;
        padding: 12px 0;
      }

      .nav-chips {
        grid-column: 1 / -1;
        justify-content: flex-start;
      }

      .hero-inner,
      .matrix-grid,
      .update-layout {
        grid-template-columns: 1fr;
      }

      .update-summary {
        position: static;
      }

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

    @media (max-width: 768px) {
      .section {
        padding: 62px 0;
      }

      .page-hero {
        padding: 24px 0 34px;
      }

      .hero-inner {
        padding: 28px;
        gap: 26px;
      }

      .hero-band {
        min-height: auto;
        border-radius: 18px;
      }

      .hero-copy,
      .section-lead {
        font-size: 15px;
      }

      .hero-actions,
      .mid-cta {
        grid-template-columns: 1fr;
      }

      .hero-actions a,
      .mid-cta a,
      .compare-card a,
      .age-box button {
        width: 100%;
      }

      .entry-matrix,
      .compare-grid,
      .rule-strip,
      .footer-grid {
        grid-template-columns: 1fr;
      }

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

    @media (max-width: 520px) {
      .brand span:last-child {
        max-width: 190px;
        white-space: normal;
        line-height: 1.25;
      }

      .nav-cta {
        padding: 10px 13px;
        font-size: 13px;
      }

      .nav-chip {
        min-height: 36px;
        padding: 8px 13px;
      }

      .hero-inner,
      .age-box,
      .mid-cta {
        padding: 22px;
      }

      .side-paper {
        padding: 22px;
      }

      .timeline-item {
        padding: 20px 18px 20px 62px;
      }
    }