/* roulang page: index */
:root {
      --bg: #0b1020;
      --bg-soft: #11182d;
      --surface: rgba(255, 255, 255, 0.92);
      --surface-dark: rgba(17, 24, 45, 0.86);
      --card: #ffffff;
      --text: #172033;
      --text-strong: #071126;
      --muted: #687389;
      --muted-light: #b8c2d8;
      --line: rgba(120, 135, 166, 0.24);
      --primary: #d946ef;
      --primary-2: #7c3aed;
      --accent: #22d3ee;
      --warning: #f59e0b;
      --success: #10b981;
      --danger: #fb7185;
      --radius-xs: 10px;
      --radius-sm: 14px;
      --radius-md: 22px;
      --radius-lg: 32px;
      --shadow-sm: 0 10px 25px rgba(9, 15, 35, 0.10);
      --shadow-md: 0 18px 50px rgba(9, 15, 35, 0.16);
      --shadow-lg: 0 28px 80px rgba(6, 10, 24, 0.32);
      --container: 1180px;
      --ease: 180ms ease;
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
    }

    * {
      box-sizing: border-box;
    }

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

    body {
      margin: 0;
      font-family: var(--font);
      color: var(--text);
      background:
        radial-gradient(circle at 8% 8%, rgba(217, 70, 239, 0.15), transparent 34%),
        radial-gradient(circle at 92% 3%, rgba(34, 211, 238, 0.12), transparent 30%),
        linear-gradient(180deg, #f8fbff 0%, #eef3fb 46%, #f9fbff 100%);
      line-height: 1.75;
      min-width: 320px;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--ease), background var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
    }

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

    button,
    input,
    textarea {
      font: inherit;
    }

    button {
      border: 0;
      cursor: pointer;
    }

    ::selection {
      background: rgba(217, 70, 239, 0.22);
      color: var(--text-strong);
    }

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

    .skip-link {
      position: absolute;
      left: 18px;
      top: -50px;
      z-index: 1000;
      padding: 10px 14px;
      border-radius: 999px;
      background: var(--text-strong);
      color: #fff;
    }

    .skip-link:focus {
      top: 14px;
      outline: 3px solid rgba(34, 211, 238, 0.55);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      backdrop-filter: blur(18px);
      background: rgba(248, 251, 255, 0.82);
      border-bottom: 1px solid rgba(120, 135, 166, 0.18);
    }

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

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 900;
      letter-spacing: -0.02em;
      color: var(--text-strong);
      white-space: nowrap;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: grid;
      place-items: center;
      color: #fff;
      font-size: 18px;
      background:
        linear-gradient(135deg, rgba(217, 70, 239, 0.95), rgba(124, 58, 237, 0.95)),
        radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.8), transparent 30%);
      box-shadow: 0 14px 34px rgba(124, 58, 237, 0.32);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.12;
    }

    .brand-text strong {
      font-size: 17px;
    }

    .brand-text span {
      margin-top: 3px;
      font-size: 12px;
      color: var(--muted);
      font-weight: 700;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 6px;
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .nav-menu a {
      position: relative;
      display: inline-flex;
      align-items: center;
      min-height: 42px;
      padding: 0 14px;
      border-radius: 999px;
      color: #334159;
      font-size: 14px;
      font-weight: 800;
    }

    .nav-menu a:hover,
    .nav-menu a:focus {
      color: var(--primary-2);
      background: rgba(124, 58, 237, 0.08);
      outline: none;
    }

    .nav-menu a.active {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      box-shadow: 0 12px 28px rgba(124, 58, 237, 0.22);
    }

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

    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 14px;
      color: var(--text-strong);
      background: #fff;
      box-shadow: var(--shadow-sm);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 9px;
      min-height: 46px;
      padding: 0 18px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 900;
      line-height: 1;
      border: 1px solid transparent;
      user-select: none;
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      box-shadow: 0 16px 38px rgba(124, 58, 237, 0.28);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 20px 48px rgba(124, 58, 237, 0.36);
    }

    .btn-secondary {
      color: var(--text-strong);
      background: rgba(255, 255, 255, 0.88);
      border-color: rgba(120, 135, 166, 0.28);
      box-shadow: var(--shadow-sm);
    }

    .btn-secondary:hover {
      transform: translateY(-2px);
      border-color: rgba(124, 58, 237, 0.28);
      color: var(--primary-2);
    }

    .btn-ghost {
      color: #fff;
      background: rgba(255, 255, 255, 0.13);
      border-color: rgba(255, 255, 255, 0.25);
    }

    .btn-ghost:hover {
      background: rgba(255, 255, 255, 0.2);
      transform: translateY(-2px);
    }

    .btn:focus-visible,
    .faq-question:focus-visible,
    .field:focus,
    .newsletter input:focus {
      outline: 4px solid rgba(34, 211, 238, 0.28);
      outline-offset: 2px;
    }

    .hero {
      position: relative;
      min-height: 720px;
      display: grid;
      align-items: center;
      overflow: hidden;
      color: #fff;
      background-image:
        linear-gradient(105deg, rgba(7, 12, 27, 0.92) 0%, rgba(23, 15, 54, 0.78) 48%, rgba(9, 15, 35, 0.54) 100%),
        url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      isolation: isolate;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(circle at 78% 22%, rgba(217, 70, 239, 0.38), transparent 28%),
        radial-gradient(circle at 15% 72%, rgba(34, 211, 238, 0.24), transparent 28%);
      z-index: -1;
    }

    .hero-layout {
      display: grid;
      grid-template-columns: 1.08fr 0.92fr;
      gap: 56px;
      align-items: center;
      padding: 90px 0 78px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      padding: 8px 12px;
      border-radius: 999px;
      color: #ecfeff;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.2);
      font-size: 13px;
      font-weight: 900;
      backdrop-filter: blur(14px);
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 6px rgba(34, 211, 238, 0.16);
    }

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

    .hero h1 {
      margin: 24px 0 20px;
      font-size: clamp(42px, 6vw, 76px);
      line-height: 0.98;
      letter-spacing: -0.06em;
      max-width: 840px;
    }

    .hero-subtitle {
      max-width: 760px;
      color: rgba(240, 247, 255, 0.86);
      font-size: clamp(17px, 2vw, 21px);
      line-height: 1.85;
      margin-bottom: 30px;
    }

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

    .hero-note {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      color: rgba(255, 255, 255, 0.78);
      font-size: 14px;
      font-weight: 700;
    }

    .hero-note span {
      display: inline-flex;
      align-items: center;
      gap: 7px;
    }

    .hero-note span::before {
      content: "✓";
      width: 18px;
      height: 18px;
      display: inline-grid;
      place-items: center;
      border-radius: 50%;
      color: #08111f;
      background: #a7f3d0;
      font-size: 12px;
      font-weight: 1000;
    }

    .hero-panel {
      position: relative;
      display: grid;
      gap: 18px;
      align-self: stretch;
    }

    .glass-board {
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.08));
      box-shadow: var(--shadow-lg);
      backdrop-filter: blur(18px);
      border-radius: var(--radius-lg);
      padding: 24px;
    }

    .board-top {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 16px;
      margin-bottom: 22px;
    }

    .board-title {
      font-size: 19px;
      font-weight: 950;
      color: #fff;
      margin: 0 0 7px;
    }

    .board-desc {
      color: rgba(255, 255, 255, 0.72);
      font-size: 14px;
      margin: 0;
    }

    .age-badge {
      flex: 0 0 auto;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 54px;
      height: 54px;
      border-radius: 18px;
      font-weight: 1000;
      background: rgba(251, 113, 133, 0.16);
      border: 1px solid rgba(251, 113, 133, 0.34);
      color: #ffe4e6;
    }

    .quality-list {
      display: grid;
      gap: 12px;
    }

    .quality-item {
      display: grid;
      grid-template-columns: 42px 1fr auto;
      gap: 12px;
      align-items: center;
      padding: 13px;
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.14);
    }

    .quality-icon {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      background: rgba(34, 211, 238, 0.16);
      color: #cffafe;
      font-weight: 950;
    }

    .quality-item strong {
      display: block;
      color: #fff;
      line-height: 1.3;
    }

    .quality-item small {
      color: rgba(255, 255, 255, 0.66);
      font-weight: 700;
    }

    .quality-pill {
      padding: 6px 10px;
      border-radius: 999px;
      color: #071126;
      background: #fff;
      font-size: 12px;
      font-weight: 950;
      white-space: nowrap;
    }

    .mini-metrics {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
    }

    .metric-box {
      padding: 17px;
      border-radius: 22px;
      background: rgba(8, 15, 32, 0.52);
      border: 1px solid rgba(255, 255, 255, 0.14);
    }

    .metric-box strong {
      display: block;
      color: #fff;
      font-size: 24px;
      line-height: 1;
      margin-bottom: 7px;
    }

    .metric-box span {
      color: rgba(255, 255, 255, 0.68);
      font-size: 12px;
      font-weight: 800;
    }

    main {
      overflow: hidden;
    }

    .section {
      padding: 92px 0;
    }

    .section-tight {
      padding: 66px 0;
    }

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

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 12px;
      color: var(--primary-2);
      font-size: 13px;
      font-weight: 950;
      letter-spacing: 0.08em;
    }

    .section-kicker::after {
      content: "";
      width: 34px;
      height: 2px;
      border-radius: 999px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
    }

    .section-title {
      margin: 0;
      color: var(--text-strong);
      font-size: clamp(28px, 4vw, 46px);
      line-height: 1.14;
      letter-spacing: -0.04em;
    }

    .section-desc {
      max-width: 610px;
      margin: 12px 0 0;
      color: var(--muted);
      font-size: 16px;
    }

    .soft-panel {
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, 0.72);
      border: 1px solid rgba(120, 135, 166, 0.18);
      box-shadow: var(--shadow-sm);
    }

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

    .feature-card {
      position: relative;
      min-height: 260px;
      padding: 24px;
      border-radius: var(--radius-md);
      background: var(--card);
      border: 1px solid rgba(120, 135, 166, 0.18);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(124, 58, 237, 0.25);
    }

    .feature-card::after {
      content: "";
      position: absolute;
      right: -34px;
      top: -34px;
      width: 112px;
      height: 112px;
      border-radius: 50%;
      background: rgba(217, 70, 239, 0.10);
    }

    .feature-icon {
      width: 52px;
      height: 52px;
      display: grid;
      place-items: center;
      border-radius: 18px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      box-shadow: 0 14px 30px rgba(124, 58, 237, 0.22);
      margin-bottom: 20px;
      font-size: 22px;
      font-weight: 950;
    }

    .feature-card h3 {
      color: var(--text-strong);
      font-size: 20px;
      line-height: 1.32;
      margin: 0 0 10px;
    }

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

    .category-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .category-card {
      position: relative;
      min-height: 430px;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      background: var(--bg);
      isolation: isolate;
    }

    .category-card img {
      width: 100%;
      height: 100%;
      min-height: 430px;
      object-fit: cover;
      filter: saturate(1.05) contrast(1.02);
      transition: transform 380ms ease;
    }

    .category-card:hover img {
      transform: scale(1.05);
    }

    .category-card::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(7, 17, 38, 0.08) 0%, rgba(7, 17, 38, 0.88) 100%);
      z-index: 1;
    }

    .category-content {
      position: absolute;
      inset: auto 0 0;
      z-index: 2;
      padding: 28px;
      color: #fff;
    }

    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 14px;
    }

    .tag,
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 7px 10px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 950;
      line-height: 1;
    }

    .tag {
      color: #ecfeff;
      background: rgba(255, 255, 255, 0.14);
      border: 1px solid rgba(255, 255, 255, 0.22);
      backdrop-filter: blur(10px);
    }

    .badge {
      color: var(--primary-2);
      background: rgba(124, 58, 237, 0.09);
      border: 1px solid rgba(124, 58, 237, 0.12);
    }

    .category-content h3 {
      margin: 0 0 10px;
      font-size: 25px;
      line-height: 1.2;
      letter-spacing: -0.03em;
    }

    .category-content p {
      margin: 0 0 20px;
      color: rgba(255, 255, 255, 0.76);
      font-size: 15px;
    }

    .split {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 36px;
      align-items: center;
    }

    .image-stack {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      min-height: 520px;
      background: var(--bg);
    }

    .image-stack img {
      width: 100%;
      height: 520px;
      object-fit: cover;
      opacity: 0.9;
    }

    .image-caption {
      position: absolute;
      left: 24px;
      right: 24px;
      bottom: 24px;
      padding: 22px;
      border-radius: 24px;
      color: #fff;
      background: rgba(10, 16, 34, 0.72);
      border: 1px solid rgba(255, 255, 255, 0.18);
      backdrop-filter: blur(14px);
    }

    .image-caption strong {
      display: block;
      font-size: 20px;
      margin-bottom: 8px;
    }

    .image-caption span {
      color: rgba(255, 255, 255, 0.72);
      font-size: 14px;
    }

    .check-list {
      display: grid;
      gap: 14px;
      margin: 28px 0 0;
      padding: 0;
      list-style: none;
    }

    .check-list li {
      display: grid;
      grid-template-columns: 30px 1fr;
      gap: 13px;
      align-items: start;
      padding: 16px;
      border-radius: 18px;
      background: rgba(255, 255, 255, 0.74);
      border: 1px solid rgba(120, 135, 166, 0.18);
    }

    .check-list li::before {
      content: "✓";
      width: 30px;
      height: 30px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: #fff;
      background: linear-gradient(135deg, var(--success), #14b8a6);
      font-weight: 950;
    }

    .check-list strong {
      display: block;
      color: var(--text-strong);
      margin-bottom: 3px;
    }

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

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

    .step {
      counter-increment: step;
      position: relative;
      padding: 26px;
      border-radius: var(--radius-md);
      background: #fff;
      border: 1px solid rgba(120, 135, 166, 0.18);
      box-shadow: var(--shadow-sm);
    }

    .step::before {
      content: counter(step, decimal-leading-zero);
      display: inline-flex;
      margin-bottom: 22px;
      color: transparent;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      -webkit-background-clip: text;
      background-clip: text;
      font-size: 34px;
      line-height: 1;
      font-weight: 1000;
      letter-spacing: -0.05em;
    }

    .step h3 {
      margin: 0 0 9px;
      color: var(--text-strong);
      font-size: 19px;
    }

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

    .updates-wrap {
      display: grid;
      grid-template-columns: 0.78fr 1.22fr;
      gap: 28px;
      align-items: start;
    }

    .updates-intro {
      position: sticky;
      top: 104px;
      padding: 30px;
      color: #fff;
      background:
        linear-gradient(140deg, rgba(124, 58, 237, 0.92), rgba(217, 70, 239, 0.86)),
        url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      background-position: center;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .updates-intro h2 {
      margin: 14px 0 12px;
      font-size: 34px;
      line-height: 1.15;
      letter-spacing: -0.04em;
    }

    .updates-intro p {
      color: rgba(255, 255, 255, 0.78);
      margin-bottom: 24px;
    }

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

    .update-card {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 18px;
      padding: 22px;
      border-radius: 24px;
      background: rgba(255, 255, 255, 0.84);
      border: 1px solid rgba(120, 135, 166, 0.18);
      box-shadow: var(--shadow-sm);
    }

    .update-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: rgba(124, 58, 237, 0.22);
    }

    .update-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 9px;
      color: var(--muted);
      font-size: 12px;
      font-weight: 850;
    }

    .update-card h3 {
      margin: 0 0 8px;
      color: var(--text-strong);
      font-size: 19px;
      line-height: 1.35;
    }

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

    .update-arrow {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 15px;
      color: var(--primary-2);
      background: rgba(124, 58, 237, 0.08);
      font-weight: 1000;
    }

    .empty-updates {
      padding: 26px;
      border-radius: 24px;
      background: #fff;
      border: 1px dashed rgba(120, 135, 166, 0.42);
      color: var(--muted);
      font-weight: 800;
    }

    .proof-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      padding: 18px;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid rgba(120, 135, 166, 0.18);
      box-shadow: var(--shadow-sm);
    }

    .proof-item {
      padding: 22px;
      border-radius: 24px;
      background: linear-gradient(180deg, #fbfdff, #f2f6fd);
      border: 1px solid rgba(120, 135, 166, 0.14);
    }

    .proof-item strong {
      display: block;
      color: var(--text-strong);
      font-size: 30px;
      line-height: 1;
      margin-bottom: 10px;
      letter-spacing: -0.04em;
    }

    .proof-item span {
      color: var(--muted);
      font-size: 13px;
      font-weight: 850;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: 0.78fr 1.22fr;
      gap: 32px;
      align-items: start;
    }

    .faq-aside {
      padding: 30px;
      border-radius: var(--radius-lg);
      background: #11182d;
      color: #fff;
      box-shadow: var(--shadow-md);
    }

    .faq-aside h2 {
      margin: 10px 0 12px;
      font-size: 34px;
      line-height: 1.16;
      letter-spacing: -0.04em;
    }

    .faq-aside p {
      color: rgba(255, 255, 255, 0.72);
    }

    .faq-list {
      display: grid;
      gap: 13px;
    }

    .faq-item {
      border-radius: 22px;
      background: rgba(255, 255, 255, 0.86);
      border: 1px solid rgba(120, 135, 166, 0.18);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      padding: 20px 22px;
      color: var(--text-strong);
      background: transparent;
      text-align: left;
      font-weight: 950;
    }

    .faq-question span:last-child {
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      background: rgba(124, 58, 237, 0.09);
      color: var(--primary-2);
      flex: 0 0 auto;
      transition: transform var(--ease);
    }

    .faq-item.open .faq-question span:last-child {
      transform: rotate(45deg);
    }

    .faq-answer {
      display: none;
      padding: 0 22px 22px;
      color: var(--muted);
      font-size: 15px;
    }

    .faq-item.open .faq-answer {
      display: block;
    }

    .cta {
      position: relative;
      border-radius: 40px;
      padding: 54px;
      overflow: hidden;
      color: #fff;
      background:
        linear-gradient(135deg, rgba(9, 15, 35, 0.94), rgba(58, 22, 96, 0.86)),
        url('/assets/images/backpic/back-3.webp');
      background-size: cover;
      background-position: center;
      box-shadow: var(--shadow-lg);
      isolation: isolate;
    }

    .cta::after {
      content: "";
      position: absolute;
      width: 330px;
      height: 330px;
      right: -90px;
      bottom: -120px;
      border-radius: 50%;
      background: rgba(34, 211, 238, 0.18);
      z-index: -1;
    }

    .cta-inner {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 32px;
      align-items: center;
    }

    .cta h2 {
      margin: 10px 0 12px;
      font-size: clamp(30px, 4vw, 52px);
      line-height: 1.08;
      letter-spacing: -0.05em;
      max-width: 780px;
    }

    .cta p {
      color: rgba(255, 255, 255, 0.76);
      max-width: 720px;
      margin-bottom: 0;
    }

    .cta-actions {
      display: flex;
      flex-direction: column;
      gap: 12px;
      min-width: 220px;
    }

    .newsletter {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 10px;
      margin-top: 26px;
      max-width: 600px;
      padding: 8px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .newsletter input {
      min-width: 0;
      border: 0;
      color: #fff;
      background: transparent;
      padding: 0 14px;
      outline: none;
    }

    .newsletter input::placeholder {
      color: rgba(255, 255, 255, 0.62);
    }

    .site-footer {
      padding: 60px 0 28px;
      background: #080e1d;
      color: rgba(255, 255, 255, 0.72);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr repeat(3, 0.7fr);
      gap: 36px;
      padding-bottom: 38px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }

    .footer-brand .brand {
      color: #fff;
      margin-bottom: 16px;
    }

    .footer-brand p {
      max-width: 460px;
      color: rgba(255, 255, 255, 0.65);
      font-size: 14px;
    }

    .footer-col h3 {
      margin: 0 0 14px;
      color: #fff;
      font-size: 15px;
    }

    .footer-links {
      display: grid;
      gap: 10px;
      padding: 0;
      margin: 0;
      list-style: none;
    }

    .footer-links a {
      color: rgba(255, 255, 255, 0.66);
      font-size: 14px;
    }

    .footer-links a:hover {
      color: #fff;
      transform: translateX(3px);
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      align-items: center;
      padding-top: 24px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.55);
    }

    .age-warning {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border-radius: 999px;
      color: #fecdd3;
      background: rgba(251, 113, 133, 0.12);
      border: 1px solid rgba(251, 113, 133, 0.22);
      font-weight: 850;
    }

    @media (max-width: 1024px) {
      .nav-actions .btn {
        display: none;
      }

      .hero-layout,
      .split,
      .updates-wrap,
      .faq-grid,
      .cta-inner {
        grid-template-columns: 1fr;
      }

      .hero {
        min-height: auto;
      }

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

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

      .category-card,
      .category-card img {
        min-height: 360px;
      }

      .updates-intro {
        position: relative;
        top: auto;
      }

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

    @media (max-width: 768px) {
      .container {
        width: min(100% - 28px, var(--container));
      }

      .nav-wrap {
        min-height: 68px;
      }

      .menu-toggle {
        display: inline-grid;
        place-items: center;
      }

      .nav-menu {
        position: absolute;
        left: 14px;
        right: 14px;
        top: 76px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        border-radius: 24px;
        background: rgba(255, 255, 255, 0.96);
        border: 1px solid rgba(120, 135, 166, 0.2);
        box-shadow: var(--shadow-md);
      }

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

      .nav-menu a {
        justify-content: center;
      }

      .brand-text span {
        display: none;
      }

      .hero-layout {
        padding: 66px 0 54px;
        gap: 30px;
      }

      .hero h1 {
        font-size: clamp(38px, 12vw, 58px);
      }

      .hero-actions {
        align-items: stretch;
        flex-direction: column;
      }

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

      .mini-metrics,
      .feature-grid,
      .steps,
      .proof-strip {
        grid-template-columns: 1fr;
      }

      .section {
        padding: 70px 0;
      }

      .section-tight {
        padding: 52px 0;
      }

      .section-head {
        flex-direction: column;
        align-items: flex-start;
      }

      .update-card {
        grid-template-columns: 1fr;
      }

      .update-arrow {
        display: none;
      }

      .image-stack,
      .image-stack img {
        min-height: 390px;
        height: 390px;
      }

      .cta {
        padding: 34px 24px;
        border-radius: 30px;
      }

      .newsletter {
        grid-template-columns: 1fr;
        border-radius: 24px;
      }

      .newsletter input {
        min-height: 44px;
      }

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

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }

    @media (max-width: 520px) {
      .brand-mark {
        width: 38px;
        height: 38px;
        border-radius: 13px;
      }

      .brand-text strong {
        font-size: 15px;
      }

      .glass-board,
      .feature-card,
      .updates-intro,
      .faq-aside {
        padding: 20px;
      }

      .quality-item {
        grid-template-columns: 38px 1fr;
      }

      .quality-pill {
        grid-column: 1 / -1;
        width: fit-content;
      }

      .hero-subtitle,
      .section-desc {
        font-size: 15px;
      }

      .category-content {
        padding: 22px;
      }

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

      .proof-item strong {
        font-size: 26px;
      }
    }

/* roulang page: category1 */
:root {
      --bg: #0b1020;
      --bg-soft: #10182f;
      --surface: #ffffff;
      --surface-soft: #f5f7fb;
      --surface-warm: #fff7f3;
      --text: #101827;
      --text-soft: #536071;
      --muted: #7b8493;
      --primary: #e84b63;
      --primary-dark: #c9324a;
      --primary-soft: rgba(232, 75, 99, .12);
      --accent: #7c5cff;
      --accent-soft: rgba(124, 92, 255, .12);
      --gold: #ffb84d;
      --border: rgba(17, 24, 39, .10);
      --border-dark: rgba(255, 255, 255, .14);
      --shadow: 0 18px 50px rgba(16, 24, 39, .12);
      --shadow-soft: 0 10px 28px rgba(16, 24, 39, .08);
      --radius-sm: 12px;
      --radius: 20px;
      --radius-lg: 30px;
      --container: 1180px;
      --header-h: 78px;
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
    }

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

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

    body {
      font-family: var(--font);
      color: var(--text);
      background:
        radial-gradient(circle at top left, rgba(232, 75, 99, .12), transparent 34rem),
        linear-gradient(180deg, #fff 0%, #f7f8fc 45%, #fff 100%);
      line-height: 1.75;
      min-height: 100vh;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color .22s ease, background .22s ease, border-color .22s ease, transform .22s ease;
    }

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

    button,
    input {
      font: inherit;
    }

    button {
      cursor: pointer;
      border: 0;
    }

    :focus-visible {
      outline: 3px solid rgba(232, 75, 99, .34);
      outline-offset: 3px;
    }

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      height: var(--header-h);
      background: rgba(255, 255, 255, .86);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(17, 24, 39, .08);
    }

    .nav-wrap {
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: max-content;
    }

    .brand-mark {
      width: 44px;
      height: 44px;
      display: grid;
      place-items: center;
      border-radius: 15px;
      color: #fff;
      font-weight: 900;
      font-size: 20px;
      background:
        linear-gradient(135deg, rgba(255, 255, 255, .18), transparent),
        linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 12px 28px rgba(232, 75, 99, .28);
    }

    .brand-text {
      display: grid;
      gap: 1px;
      line-height: 1.2;
    }

    .brand-text strong {
      font-size: 18px;
      letter-spacing: -.02em;
      color: var(--text);
    }

    .brand-text span {
      font-size: 12px;
      color: var(--muted);
    }

    nav {
      display: flex;
      align-items: center;
      justify-content: center;
      flex: 1;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 6px;
      list-style: none;
      padding: 6px;
      background: rgba(245, 247, 251, .78);
      border: 1px solid rgba(17, 24, 39, .06);
      border-radius: 999px;
    }

    .nav-menu a {
      display: inline-flex;
      align-items: center;
      min-height: 40px;
      padding: 0 16px;
      border-radius: 999px;
      color: #394456;
      font-size: 14px;
      font-weight: 700;
      white-space: nowrap;
    }

    .nav-menu a:hover {
      color: var(--primary);
      background: #fff;
      box-shadow: 0 8px 20px rgba(16, 24, 39, .06);
    }

    .nav-menu a.active {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 10px 24px rgba(232, 75, 99, .20);
    }

    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 14px;
      color: var(--text);
      background: var(--surface-soft);
      border: 1px solid var(--border);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 0 20px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 800;
      line-height: 1;
      border: 1px solid transparent;
      transition: transform .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease, border-color .22s ease;
      white-space: nowrap;
    }

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

    .btn:active {
      transform: translateY(0);
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 14px 30px rgba(232, 75, 99, .24);
    }

    .btn-primary:hover {
      box-shadow: 0 18px 38px rgba(232, 75, 99, .32);
    }

    .btn-secondary {
      color: var(--primary-dark);
      background: #fff;
      border-color: rgba(232, 75, 99, .20);
      box-shadow: var(--shadow-soft);
    }

    .btn-secondary:hover {
      border-color: rgba(232, 75, 99, .38);
      background: var(--surface-warm);
    }

    .btn-dark {
      color: #fff;
      background: rgba(255, 255, 255, .13);
      border-color: rgba(255, 255, 255, .22);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border-radius: 999px;
      color: var(--primary-dark);
      background: var(--primary-soft);
      font-size: 13px;
      font-weight: 800;
      line-height: 1;
    }

    .badge.dark {
      color: #fff;
      background: rgba(255, 255, 255, .14);
      border: 1px solid rgba(255, 255, 255, .18);
    }

    .hero {
      position: relative;
      isolation: isolate;
      min-height: 560px;
      color: #fff;
      background:
        linear-gradient(120deg, rgba(11, 16, 32, .90), rgba(11, 16, 32, .54)),
        url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
      overflow: hidden;
    }

    .hero::after {
      content: "";
      position: absolute;
      inset: auto -12% -42% 35%;
      height: 360px;
      border-radius: 999px;
      background: radial-gradient(circle, rgba(232, 75, 99, .42), transparent 68%);
      filter: blur(8px);
      z-index: -1;
    }

    .hero-inner {
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(320px, .75fr);
      gap: 46px;
      align-items: center;
      padding: 92px 0 78px;
    }

    .hero h1 {
      margin-top: 18px;
      max-width: 820px;
      font-size: clamp(38px, 5.2vw, 72px);
      line-height: 1.06;
      letter-spacing: -.055em;
    }

    .hero-lead {
      max-width: 720px;
      margin-top: 22px;
      color: rgba(255, 255, 255, .82);
      font-size: 18px;
      line-height: 1.9;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 32px;
    }

    .hero-note {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 28px;
      color: rgba(255, 255, 255, .74);
      font-size: 13px;
    }

    .hero-note span {
      padding: 7px 10px;
      border: 1px solid rgba(255, 255, 255, .16);
      border-radius: 999px;
      background: rgba(255, 255, 255, .08);
    }

    .privacy-panel {
      padding: 18px;
      border: 1px solid rgba(255, 255, 255, .16);
      border-radius: var(--radius-lg);
      background: rgba(255, 255, 255, .10);
      backdrop-filter: blur(18px);
      box-shadow: 0 28px 80px rgba(0, 0, 0, .22);
    }

    .privacy-panel img {
      width: 100%;
      aspect-ratio: 4/3;
      object-fit: cover;
      border-radius: 24px;
      border: 1px solid rgba(255, 255, 255, .16);
    }

    .panel-list {
      display: grid;
      gap: 12px;
      margin-top: 16px;
    }

    .panel-item {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 14px;
      border-radius: 18px;
      background: rgba(255, 255, 255, .12);
      border: 1px solid rgba(255, 255, 255, .13);
    }

    .panel-item i {
      flex: 0 0 auto;
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 10px;
      color: #fff;
      font-style: normal;
      font-weight: 900;
      background: linear-gradient(135deg, var(--primary), var(--gold));
    }

    .panel-item strong {
      display: block;
      color: #fff;
      font-size: 15px;
      line-height: 1.35;
    }

    .panel-item span {
      display: block;
      margin-top: 3px;
      color: rgba(255, 255, 255, .72);
      font-size: 13px;
      line-height: 1.55;
    }

    main {
      overflow: hidden;
    }

    .section {
      padding: 86px 0;
    }

    .section.tight {
      padding-top: 42px;
    }

    .section-head {
      display: grid;
      gap: 14px;
      max-width: 760px;
      margin-bottom: 34px;
    }

    .section-head.center {
      text-align: center;
      margin-inline: auto;
      justify-items: center;
    }

    .section-title {
      font-size: clamp(28px, 3.6vw, 46px);
      line-height: 1.16;
      letter-spacing: -.035em;
      color: var(--text);
    }

    .section-desc {
      color: var(--text-soft);
      font-size: 16px;
      line-height: 1.9;
    }

    .risk-strip {
      transform: translateY(-36px);
      position: relative;
      z-index: 3;
    }

    .risk-card {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      overflow: hidden;
      border-radius: var(--radius-lg);
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: var(--shadow);
    }

    .risk-cell {
      padding: 28px;
      border-right: 1px solid var(--border);
    }

    .risk-cell:last-child {
      border-right: 0;
    }

    .risk-cell span {
      display: inline-grid;
      place-items: center;
      width: 42px;
      height: 42px;
      margin-bottom: 16px;
      border-radius: 14px;
      color: var(--primary-dark);
      background: var(--primary-soft);
      font-weight: 900;
    }

    .risk-cell h2 {
      font-size: 18px;
      margin-bottom: 8px;
      line-height: 1.35;
    }

    .risk-cell p {
      color: var(--text-soft);
      font-size: 14px;
      line-height: 1.75;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .feature-card {
      position: relative;
      min-height: 250px;
      padding: 28px;
      border-radius: var(--radius);
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-soft);
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
      overflow: hidden;
    }

    .feature-card::after {
      content: "";
      position: absolute;
      inset: auto -20% -35% 38%;
      height: 160px;
      background: radial-gradient(circle, rgba(232, 75, 99, .16), transparent 70%);
    }

    .feature-card:hover {
      transform: translateY(-6px);
      border-color: rgba(232, 75, 99, .22);
      box-shadow: var(--shadow);
    }

    .icon {
      width: 50px;
      height: 50px;
      display: grid;
      place-items: center;
      margin-bottom: 20px;
      border-radius: 18px;
      color: #fff;
      font-weight: 900;
      font-style: normal;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 14px 24px rgba(232, 75, 99, .20);
    }

    .feature-card h3 {
      font-size: 20px;
      line-height: 1.35;
      margin-bottom: 10px;
    }

    .feature-card p {
      color: var(--text-soft);
      font-size: 15px;
      line-height: 1.85;
    }

    .split {
      display: grid;
      grid-template-columns: .92fr 1.08fr;
      gap: 44px;
      align-items: center;
    }

    .image-card {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      min-height: 430px;
      box-shadow: var(--shadow);
      background: var(--bg-soft);
    }

    .image-card img {
      width: 100%;
      height: 100%;
      min-height: 430px;
      object-fit: cover;
    }

    .image-card .image-caption {
      position: absolute;
      left: 22px;
      right: 22px;
      bottom: 22px;
      padding: 18px;
      border-radius: 20px;
      color: #fff;
      background: rgba(11, 16, 32, .66);
      backdrop-filter: blur(14px);
      border: 1px solid rgba(255, 255, 255, .15);
    }

    .image-caption strong {
      display: block;
      margin-bottom: 5px;
      font-size: 17px;
    }

    .image-caption span {
      display: block;
      color: rgba(255, 255, 255, .76);
      font-size: 13px;
      line-height: 1.6;
    }

    .check-list {
      display: grid;
      gap: 14px;
      margin-top: 24px;
      list-style: none;
    }

    .check-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 16px 18px;
      border-radius: 18px;
      background: #fff;
      border: 1px solid var(--border);
      box-shadow: 0 8px 24px rgba(16, 24, 39, .05);
      color: var(--text-soft);
    }

    .check-list li::before {
      content: "✓";
      flex: 0 0 auto;
      width: 24px;
      height: 24px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: #fff;
      background: var(--primary);
      font-size: 13px;
      font-weight: 900;
      margin-top: 3px;
    }

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

    .step-card {
      counter-increment: step;
      position: relative;
      padding: 26px;
      border-radius: var(--radius);
      background: linear-gradient(180deg, #fff, #fbfbfe);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-soft);
    }

    .step-card::before {
      content: "0" counter(step);
      display: inline-flex;
      margin-bottom: 24px;
      color: rgba(232, 75, 99, .24);
      font-size: 42px;
      font-weight: 900;
      line-height: 1;
      letter-spacing: -.06em;
    }

    .step-card h3 {
      font-size: 18px;
      margin-bottom: 10px;
      line-height: 1.35;
    }

    .step-card p {
      color: var(--text-soft);
      font-size: 14px;
      line-height: 1.8;
    }

    .scene-wrap {
      color: #fff;
      background:
        linear-gradient(135deg, rgba(11, 16, 32, .96), rgba(31, 24, 58, .92)),
        url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
    }

    .scene-wrap .section-title,
    .scene-wrap .section-desc {
      color: #fff;
    }

    .scene-wrap .section-desc {
      color: rgba(255, 255, 255, .74);
    }

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

    .scene-card {
      padding: 26px;
      border-radius: var(--radius);
      background: rgba(255, 255, 255, .10);
      border: 1px solid rgba(255, 255, 255, .15);
      backdrop-filter: blur(12px);
      transition: transform .22s ease, background .22s ease;
    }

    .scene-card:hover {
      transform: translateY(-5px);
      background: rgba(255, 255, 255, .14);
    }

    .scene-card h3 {
      font-size: 20px;
      margin: 16px 0 10px;
      line-height: 1.35;
    }

    .scene-card p {
      color: rgba(255, 255, 255, .74);
      font-size: 15px;
      line-height: 1.85;
    }

    .mini-tag {
      display: inline-flex;
      padding: 7px 10px;
      border-radius: 999px;
      color: #fff;
      background: rgba(232, 75, 99, .82);
      font-size: 12px;
      font-weight: 800;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: .86fr 1.14fr;
      gap: 34px;
      align-items: start;
    }

    .faq-aside {
      position: sticky;
      top: calc(var(--header-h) + 26px);
      padding: 28px;
      border-radius: var(--radius-lg);
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: var(--shadow);
    }

    .faq-aside h2 {
      font-size: 30px;
      line-height: 1.2;
      letter-spacing: -.03em;
      margin: 12px 0;
    }

    .faq-aside p {
      color: rgba(255, 255, 255, .82);
      font-size: 15px;
    }

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

    .faq-item {
      border: 1px solid var(--border);
      border-radius: 20px;
      background: #fff;
      box-shadow: 0 8px 24px rgba(16, 24, 39, .05);
      overflow: hidden;
    }

    .faq-item summary {
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 18px;
      padding: 20px 22px;
      font-weight: 900;
      line-height: 1.45;
      cursor: pointer;
    }

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

    .faq-item summary::after {
      content: "+";
      flex: 0 0 auto;
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: var(--primary);
      background: var(--primary-soft);
      font-weight: 900;
      transition: transform .22s ease;
    }

    .faq-item[open] summary::after {
      transform: rotate(45deg);
    }

    .faq-item p {
      padding: 0 22px 22px;
      color: var(--text-soft);
      font-size: 15px;
      line-height: 1.85;
    }

    .cta {
      padding: 0 0 88px;
    }

    .cta-box {
      position: relative;
      overflow: hidden;
      border-radius: 34px;
      padding: 48px;
      color: #fff;
      background:
        radial-gradient(circle at 85% 20%, rgba(255, 184, 77, .28), transparent 28rem),
        linear-gradient(135deg, #11182e, #26183f 58%, #421b3a);
      box-shadow: var(--shadow);
    }

    .cta-box::after {
      content: "";
      position: absolute;
      right: -90px;
      bottom: -120px;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      background: rgba(232, 75, 99, .28);
      filter: blur(4px);
    }

    .cta-content {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 28px;
      align-items: center;
    }

    .cta h2 {
      font-size: clamp(28px, 3.2vw, 44px);
      line-height: 1.18;
      letter-spacing: -.04em;
      margin-bottom: 12px;
    }

    .cta p {
      max-width: 760px;
      color: rgba(255, 255, 255, .76);
      font-size: 16px;
      line-height: 1.9;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-end;
    }

    .site-footer {
      color: rgba(255, 255, 255, .78);
      background: #080d19;
      padding: 64px 0 28px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.35fr repeat(3, 1fr);
      gap: 34px;
    }

    .footer-brand p {
      margin-top: 16px;
      max-width: 420px;
      color: rgba(255, 255, 255, .68);
      font-size: 14px;
      line-height: 1.85;
    }

    .site-footer .brand-text strong {
      color: #fff;
    }

    .site-footer .brand-text span {
      color: rgba(255, 255, 255, .58);
    }

    .age-warning {
      display: inline-flex;
      margin-top: 18px;
      padding: 8px 12px;
      border-radius: 999px;
      color: #fff;
      background: rgba(232, 75, 99, .22);
      border: 1px solid rgba(232, 75, 99, .36);
      font-size: 12px;
      font-weight: 900;
    }

    .footer-col h3 {
      color: #fff;
      font-size: 16px;
      margin-bottom: 14px;
    }

    .footer-links {
      display: grid;
      gap: 10px;
      list-style: none;
    }

    .footer-links a {
      color: rgba(255, 255, 255, .64);
      font-size: 14px;
    }

    .footer-links a:hover {
      color: #fff;
      padding-left: 4px;
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      margin-top: 44px;
      padding-top: 22px;
      border-top: 1px solid rgba(255, 255, 255, .10);
      color: rgba(255, 255, 255, .52);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      .nav-actions {
        display: none;
      }

      .hero-inner,
      .split,
      .faq-grid {
        grid-template-columns: 1fr;
      }

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

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

      .privacy-panel {
        max-width: 680px;
      }

      .faq-aside {
        position: static;
      }

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

      .cta-actions {
        justify-content: flex-start;
      }
    }

    @media (max-width: 768px) {
      :root {
        --header-h: 70px;
      }

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

      .site-header {
        height: auto;
        min-height: var(--header-h);
      }

      .nav-wrap {
        min-height: var(--header-h);
        flex-wrap: wrap;
        align-content: center;
      }

      nav {
        flex: initial;
        margin-left: auto;
      }

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

      .nav-menu {
        display: none;
        position: absolute;
        left: 14px;
        right: 14px;
        top: calc(100% + 8px);
        padding: 12px;
        border-radius: 22px;
        background: rgba(255, 255, 255, .96);
        box-shadow: var(--shadow);
      }

      .nav-menu.open {
        display: grid;
        gap: 6px;
      }

      .nav-menu a {
        width: 100%;
        justify-content: center;
      }

      .hero-inner {
        padding: 64px 0 58px;
      }

      .hero h1 {
        font-size: clamp(34px, 11vw, 54px);
      }

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

      .section {
        padding: 64px 0;
      }

      .risk-strip {
        transform: none;
        padding-top: 22px;
      }

      .risk-card,
      .feature-grid,
      .scene-grid,
      .steps,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .risk-cell {
        border-right: 0;
        border-bottom: 1px solid var(--border);
      }

      .risk-cell:last-child {
        border-bottom: 0;
      }

      .image-card,
      .image-card img {
        min-height: 340px;
      }

      .cta-box {
        padding: 34px 24px;
        border-radius: 28px;
      }

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

    @media (max-width: 520px) {
      .brand-mark {
        width: 40px;
        height: 40px;
      }

      .brand-text strong {
        font-size: 16px;
      }

      .brand-text span {
        font-size: 11px;
      }

      .hero-actions,
      .cta-actions {
        display: grid;
      }

      .btn {
        width: 100%;
      }

      .hero-note span {
        width: 100%;
        text-align: center;
      }

      .feature-card,
      .step-card,
      .scene-card,
      .faq-aside {
        padding: 22px;
      }
    }

/* roulang page: article */
:root {
      --ink: #171a20;
      --ink-soft: #4d5562;
      --paper: #f7f8f5;
      --surface: #ffffff;
      --line: #dfe3df;
      --lime: #c9f05c;
      --lime-dark: #8caf28;
      --coral: #f06454;
      --night: #14171c;
      --night-2: #22272e;
      --mist: #eef1e9;
      --radius-sm: 10px;
      --radius: 18px;
      --radius-lg: 28px;
      --shadow: 0 18px 45px rgba(24, 29, 31, .10);
      --shadow-soft: 0 8px 24px rgba(24, 29, 31, .07);
      --container: 1180px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      min-width: 320px;
      color: var(--ink);
      background: var(--paper);
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

    a { color: inherit; text-decoration: none; }
    img { display: block; max-width: 100%; }
    button, input { font: inherit; }
    button { cursor: pointer; }
    :focus-visible { outline: 3px solid rgba(201, 240, 92, .85); outline-offset: 3px; }

    .container { width: min(calc(100% - 48px), var(--container)); margin: 0 auto; }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 30;
      border-bottom: 1px solid rgba(223, 227, 223, .8);
      background: rgba(247, 248, 245, .92);
      backdrop-filter: blur(16px);
    }
    .nav-wrap {
      min-height: 82px;
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .brand { display: inline-flex; align-items: center; gap: 10px; min-width: max-content; }
    .brand-mark {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      color: var(--night);
      background: var(--lime);
      border-radius: 12px;
      font-size: 20px;
      font-weight: 800;
      line-height: 1;
    }
    .brand-text { display: grid; line-height: 1.18; }
    .brand-text strong { font-size: 16px; letter-spacing: .02em; }
    .brand-text span { margin-top: 3px; color: var(--ink-soft); font-size: 11px; }
    nav { margin-left: auto; }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 4px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .nav-menu a {
      display: block;
      padding: 9px 13px;
      border-radius: 9px;
      color: #505863;
      font-size: 14px;
      font-weight: 650;
      transition: color .2s ease, background .2s ease, transform .2s ease;
    }
    .nav-menu a:hover, .nav-menu a.active { color: var(--ink); background: var(--mist); }
    .nav-menu a:active { transform: translateY(1px); }
    .nav-actions { margin-left: 2px; }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 44px;
      padding: 10px 18px;
      border: 1px solid transparent;
      border-radius: 10px;
      font-weight: 750;
      font-size: 14px;
      line-height: 1.2;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:active { transform: translateY(0); }
    .btn-primary { background: var(--lime); color: var(--night); box-shadow: 0 8px 18px rgba(140, 175, 40, .2); }
    .btn-primary:hover { background: #d4f772; box-shadow: 0 12px 24px rgba(140, 175, 40, .28); }
    .btn-dark { color: #fff; background: var(--night); }
    .btn-dark:hover { background: #303740; box-shadow: 0 12px 22px rgba(20, 23, 28, .18); }
    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      padding: 0;
      border: 1px solid var(--line);
      border-radius: 10px;
      color: var(--ink);
      background: var(--surface);
      font-size: 22px;
      line-height: 1;
    }

    main { overflow: hidden; }
    .article-hero {
      position: relative;
      min-height: 390px;
      display: flex;
      align-items: end;
      isolation: isolate;
      color: #fff;
      background: #24292d url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
    }
    .article-hero::before {
      position: absolute;
      z-index: -1;
      inset: 0;
      content: "";
      background: linear-gradient(90deg, rgba(14, 17, 20, .94) 0%, rgba(14, 17, 20, .78) 48%, rgba(14, 17, 20, .38) 100%);
    }
    .article-hero::after {
      position: absolute;
      z-index: -1;
      right: 8%;
      bottom: -1px;
      width: 190px;
      height: 54px;
      content: "";
      background: var(--paper);
      clip-path: polygon(16% 100%, 100% 100%, 100% 0, 0 0);
    }
    .hero-inner { padding: 72px 0 64px; max-width: 890px; }
    .crumbs {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      align-items: center;
      margin-bottom: 21px;
      color: rgba(255,255,255,.72);
      font-size: 13px;
    }
    .crumbs a:hover { color: var(--lime); }
    .crumb-sep { opacity: .55; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 5px 10px;
      border: 1px solid rgba(201, 240, 92, .38);
      border-radius: 999px;
      color: var(--lime);
      background: rgba(201, 240, 92, .08);
      font-size: 12px;
      font-weight: 750;
      letter-spacing: .04em;
    }
    .article-hero h1 {
      max-width: 850px;
      margin: 16px 0 15px;
      font-size: clamp(31px, 4.5vw, 54px);
      line-height: 1.24;
      letter-spacing: 0;
      font-weight: 800;
      overflow-wrap: anywhere;
    }
    .article-summary {
      max-width: 760px;
      margin: 0;
      color: rgba(255,255,255,.83);
      font-size: 17px;
      line-height: 1.8;
    }
    .article-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 20px;
      align-items: center;
      margin-top: 24px;
      color: rgba(255,255,255,.7);
      font-size: 13px;
    }
    .article-meta span { display: inline-flex; align-items: center; gap: 6px; }

    .article-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 290px;
      gap: 52px;
      align-items: start;
      padding: 62px 0 80px;
    }
    .article-body {
      min-width: 0;
      padding: clamp(24px, 4vw, 48px);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: var(--surface);
      box-shadow: var(--shadow-soft);
    }
    .article-body > *:first-child { margin-top: 0; }
    .article-body h2, .article-body h3, .article-body h4 {
      color: var(--night);
      line-height: 1.35;
      letter-spacing: 0;
    }
    .article-body h2 {
      margin: 2.1em 0 .75em;
      padding-left: 15px;
      border-left: 5px solid var(--lime-dark);
      font-size: clamp(22px, 3vw, 30px);
    }
    .article-body h3 { margin: 1.8em 0 .65em; font-size: 21px; }
    .article-body h4 { margin: 1.45em 0 .55em; font-size: 18px; }
    .article-body p { margin: 0 0 1.2em; color: #3f4751; }
    .article-body ul, .article-body ol { margin: 0 0 1.35em; padding-left: 1.35em; color: #3f4751; }
    .article-body li { margin: .5em 0; padding-left: .2em; }
    .article-body a { color: #5f7d12; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
    .article-body blockquote {
      margin: 1.8em 0;
      padding: 20px 22px;
      border-left: 4px solid var(--coral);
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      color: #38404a;
      background: #fff5f1;
    }
    .article-body img {
      width: 100%;
      height: auto;
      margin: 1.7em 0;
      border-radius: var(--radius);
      box-shadow: var(--shadow-soft);
    }
    .article-body table { display: block; max-width: 100%; overflow-x: auto; border-collapse: collapse; margin: 1.5em 0; }
    .article-body th, .article-body td { padding: 12px 14px; border: 1px solid var(--line); text-align: left; }
    .article-body th { background: var(--mist); }

    .not-found { text-align: center; padding: 38px 12px; }
    .not-found h2 { margin: 0 0 10px; border: 0; padding: 0; }
    .not-found p { margin-bottom: 22px; }

    .article-aside { position: sticky; top: 106px; }
    .aside-panel {
      padding: 23px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--surface);
      box-shadow: var(--shadow-soft);
    }
    .aside-panel + .aside-panel { margin-top: 18px; }
    .aside-panel h2 {
      margin: 0 0 13px;
      color: var(--night);
      font-size: 17px;
      line-height: 1.4;
    }
    .aside-panel p { margin: 0; color: var(--ink-soft); font-size: 14px; line-height: 1.7; }
    .rule-list { margin: 16px 0 0; padding: 0; list-style: none; }
    .rule-list li {
      position: relative;
      padding: 11px 0 11px 22px;
      border-top: 1px solid var(--line);
      color: #4b535e;
      font-size: 14px;
      line-height: 1.55;
    }
    .rule-list li::before {
      position: absolute;
      left: 1px;
      top: 13px;
      width: 11px;
      height: 11px;
      content: "";
      border-radius: 50%;
      background: var(--lime);
      box-shadow: inset 0 0 0 3px #ecf8c9;
    }
    .topic-link {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 14px 0;
      border-top: 1px solid var(--line);
      color: #3e4650;
      font-size: 14px;
      font-weight: 700;
      transition: color .2s ease, padding .2s ease;
    }
    .topic-link:hover { padding-left: 5px; color: var(--lime-dark); }
    .topic-link span { color: var(--coral); font-size: 18px; }

    .reading-strip { padding: 0 0 80px; }
    .section-heading { max-width: 700px; margin-bottom: 26px; }
    .section-kicker {
      display: block;
      margin-bottom: 7px;
      color: var(--lime-dark);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .08em;
    }
    .section-heading h2 { margin: 0; color: var(--night); font-size: clamp(26px, 3vw, 36px); line-height: 1.3; }
    .guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .guide-card {
      min-height: 255px;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--surface);
      box-shadow: var(--shadow-soft);
      transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }
    .guide-card:hover { transform: translateY(-5px); border-color: #cbd5a9; box-shadow: var(--shadow); }
    .guide-card img { width: 100%; height: 134px; object-fit: cover; }
    .guide-card-content { padding: 18px; }
    .guide-card h3 { margin: 0 0 7px; color: var(--night); font-size: 18px; line-height: 1.4; }
    .guide-card p { margin: 0; color: var(--ink-soft); font-size: 14px; line-height: 1.65; }
    .guide-card a { display: block; height: 100%; }

    .safe-band { padding: 70px 0; color: #fff; background: var(--night); }
    .safe-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
    .safe-band .section-kicker { color: var(--lime); }
    .safe-band h2 { margin: 0 0 13px; font-size: clamp(27px, 3.5vw, 42px); line-height: 1.28; }
    .safe-band p { max-width: 620px; margin: 0; color: rgba(255,255,255,.73); }
    .safe-points { display: grid; gap: 11px; }
    .safe-point {
      padding: 15px 17px;
      border: 1px solid rgba(255,255,255,.13);
      border-radius: var(--radius-sm);
      color: #f1f4f1;
      background: rgba(255,255,255,.055);
      font-size: 14px;
      font-weight: 650;
    }
    .safe-point b { color: var(--lime); }

    .faq-section { padding: 82px 0; }
    .faq-layout { display: grid; grid-template-columns: .75fr 1.25fr; gap: 58px; align-items: start; }
    .faq-layout .section-heading p { margin: 14px 0 0; color: var(--ink-soft); }
    .faq-list { display: grid; gap: 11px; }
    .faq-item { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); }
    .faq-item summary {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 18px;
      padding: 18px 20px;
      color: var(--night);
      font-size: 16px;
      font-weight: 750;
      cursor: pointer;
      list-style: none;
    }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; color: var(--lime-dark); font-size: 24px; font-weight: 400; }
    .faq-item[open] summary { border-bottom: 1px solid var(--line); background: #fbfcf8; }
    .faq-item[open] summary::after { content: "−"; }
    .faq-answer { padding: 16px 20px 19px; color: var(--ink-soft); font-size: 14px; line-height: 1.75; }

    .site-footer { padding: 62px 0 22px; color: #d7dde0; background: #111419; }
    .footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 34px; padding-bottom: 44px; }
    .site-footer .brand { color: #fff; }
    .site-footer .brand-text span { color: #9ca7ad; }
    .footer-brand p { max-width: 365px; margin: 17px 0; color: #aab3b8; font-size: 13px; line-height: 1.75; }
    .age-warning {
      display: inline-flex;
      padding: 5px 10px;
      border: 1px solid rgba(240, 100, 84, .45);
      border-radius: 999px;
      color: #ff9d8f;
      background: rgba(240, 100, 84, .1);
      font-size: 12px;
      font-weight: 750;
    }
    .footer-col h3 { margin: 4px 0 14px; color: #fff; font-size: 14px; }
    .footer-links { margin: 0; padding: 0; list-style: none; }
    .footer-links li + li { margin-top: 8px; }
    .footer-links a { color: #aab3b8; font-size: 13px; transition: color .2s ease; }
    .footer-links a:hover { color: var(--lime); }
    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      padding-top: 19px;
      border-top: 1px solid rgba(255,255,255,.12);
      color: #89949a;
      font-size: 12px;
    }

    @media (max-width: 1024px) {
      .nav-wrap { gap: 15px; }
      .nav-menu a { padding: 8px 9px; font-size: 13px; }
      .nav-actions .btn { padding: 10px 13px; }
      .article-layout { grid-template-columns: minmax(0, 1fr) 245px; gap: 26px; }
      .footer-grid { grid-template-columns: 1.45fr repeat(3, 1fr); gap: 20px; }
    }
    @media (max-width: 768px) {
      .container { width: min(calc(100% - 32px), var(--container)); }
      .nav-wrap { min-height: 70px; flex-wrap: wrap; }
      nav { margin-left: auto; }
      .menu-toggle { display: grid; place-items: center; }
      .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 16px;
        right: 16px;
        padding: 10px;
        border: 1px solid var(--line);
        border-radius: 14px;
        background: var(--surface);
        box-shadow: var(--shadow);
      }
      .nav-menu.is-open { display: grid; }
      .nav-menu a { padding: 11px 12px; }
      .nav-actions { display: none; }
      .article-hero { min-height: 350px; }
      .hero-inner { padding: 50px 0; }
      .article-summary { font-size: 16px; }
      .article-layout { grid-template-columns: 1fr; padding: 42px 0 55px; }
      .article-aside { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
      .aside-panel + .aside-panel { margin-top: 0; }
      .guide-grid { grid-template-columns: 1fr; }
      .guide-card { display: grid; grid-template-columns: 180px 1fr; min-height: 0; }
      .guide-card img { height: 100%; min-height: 150px; }
      .safe-grid, .faq-layout { grid-template-columns: 1fr; gap: 28px; }
      .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; }
      .footer-brand { grid-column: 1 / -1; }
    }
    @media (max-width: 520px) {
      .container { width: min(calc(100% - 28px), var(--container)); }
      .brand-text span { display: none; }
      .article-hero { min-height: 325px; }
      .article-hero::before { background: rgba(14, 17, 20, .80); }
      .hero-inner { padding: 38px 0 45px; }
      .article-hero h1 { margin-top: 13px; font-size: 30px; }
      .crumbs { margin-bottom: 16px; }
      .article-meta { gap: 7px 14px; }
      .article-body { padding: 24px 20px; border-radius: 18px; }
      .article-body h2 { padding-left: 11px; font-size: 23px; }
      .article-aside { grid-template-columns: 1fr; }
      .guide-card { grid-template-columns: 1fr; }
      .guide-card img { height: 175px; }
      .safe-band, .faq-section { padding: 55px 0; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 18px; }
      .footer-brand { grid-column: 1 / -1; }
      .footer-bottom { display: grid; gap: 7px; }
    }

/* roulang page: category3 */
:root{
      --bg:#090b12;
      --bg-soft:#101421;
      --bg-card:#151a2a;
      --bg-card-2:#1b2135;
      --primary:#ff4f7b;
      --primary-dark:#e53b66;
      --primary-soft:rgba(255,79,123,.14);
      --secondary:#7c5cff;
      --secondary-soft:rgba(124,92,255,.15);
      --gold:#f8c35b;
      --text:#f6f7fb;
      --text-muted:#aeb6c8;
      --text-dim:#7f889b;
      --border:rgba(255,255,255,.1);
      --border-strong:rgba(255,255,255,.18);
      --shadow:0 24px 70px rgba(0,0,0,.35);
      --shadow-soft:0 14px 42px rgba(0,0,0,.22);
      --radius:24px;
      --radius-md:18px;
      --radius-sm:12px;
      --container:1180px;
      --header-h:78px;
      --ease:.22s ease;
    }

    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      line-height:1.75;
      color:var(--text);
      background:
        radial-gradient(circle at 14% 6%,rgba(255,79,123,.18),transparent 28%),
        radial-gradient(circle at 86% 16%,rgba(124,92,255,.2),transparent 30%),
        linear-gradient(180deg,#080a11 0%,#0d111d 48%,#090b12 100%);
      min-height:100vh;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{cursor:pointer;border:0}
    ul{list-style:none}
    ::selection{background:var(--primary);color:#fff}

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

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      height:var(--header-h);
      backdrop-filter:blur(18px);
      background:rgba(9,11,18,.76);
      border-bottom:1px solid var(--border);
    }
    .nav-wrap{
      height:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
    }
    .brand-mark{
      width:44px;
      height:44px;
      border-radius:16px;
      display:grid;
      place-items:center;
      font-weight:900;
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 12px 30px rgba(255,79,123,.25);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      gap:1px;
      line-height:1.2;
    }
    .brand-text strong{
      font-size:18px;
      letter-spacing:.2px;
    }
    .brand-text span{
      font-size:12px;
      color:var(--text-muted);
    }
    nav{
      display:flex;
      align-items:center;
      margin-left:auto;
    }
    .nav-menu{
      display:flex;
      align-items:center;
      gap:6px;
      padding:6px;
      border:1px solid var(--border);
      background:rgba(255,255,255,.04);
      border-radius:999px;
    }
    .nav-menu a{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:9px 15px;
      border-radius:999px;
      font-size:14px;
      color:var(--text-muted);
      transition:background var(--ease),color var(--ease),transform var(--ease);
    }
    .nav-menu a:hover{
      color:#fff;
      background:rgba(255,255,255,.08);
      transform:translateY(-1px);
    }
    .nav-menu a.active{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 10px 26px rgba(124,92,255,.23);
    }
    .menu-toggle{
      display:none;
      width:42px;
      height:42px;
      border-radius:14px;
      color:#fff;
      background:rgba(255,255,255,.08);
      border:1px solid var(--border);
    }
    .nav-actions{
      display:flex;
      align-items:center;
      gap:10px;
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:11px 18px;
      border-radius:999px;
      font-weight:700;
      font-size:14px;
      transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease);
      white-space:nowrap;
    }
    .btn:focus-visible,
    a:focus-visible,
    button:focus-visible{
      outline:3px solid rgba(255,79,123,.42);
      outline-offset:3px;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 14px 34px rgba(255,79,123,.25);
    }
    .btn-primary:hover{
      transform:translateY(-2px);
      box-shadow:0 18px 46px rgba(124,92,255,.32);
    }
    .btn-secondary{
      color:#fff;
      border:1px solid var(--border-strong);
      background:rgba(255,255,255,.07);
    }
    .btn-secondary:hover{
      transform:translateY(-2px);
      background:rgba(255,255,255,.11);
      border-color:rgba(255,255,255,.28);
    }

    main{position:relative}
    .section{
      padding:86px 0;
      position:relative;
    }
    .section-tight{padding:64px 0}
    .section-head{
      max-width:760px;
      margin-bottom:34px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:#ffd8e3;
      font-size:13px;
      font-weight:700;
      background:var(--primary-soft);
      border:1px solid rgba(255,79,123,.22);
      margin-bottom:14px;
    }
    .section h2{
      font-size:clamp(28px,4vw,44px);
      line-height:1.18;
      letter-spacing:-.6px;
      margin-bottom:14px;
    }
    .section-desc{
      color:var(--text-muted);
      font-size:16px;
      max-width:720px;
    }

    .category-hero{
      min-height:610px;
      display:grid;
      align-items:center;
      padding:80px 0 64px;
      overflow:hidden;
      background:
        linear-gradient(90deg,rgba(9,11,18,.96),rgba(9,11,18,.82) 42%,rgba(9,11,18,.58)),
        url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
      border-bottom:1px solid var(--border);
    }
    .hero-panel{
      max-width:870px;
      padding:44px;
      border-radius:32px;
      background:linear-gradient(135deg,rgba(20,24,39,.88),rgba(18,23,38,.62));
      border:1px solid var(--border-strong);
      box-shadow:var(--shadow);
      backdrop-filter:blur(14px);
      position:relative;
      overflow:hidden;
    }
    .hero-panel::after{
      content:"";
      position:absolute;
      inset:auto -80px -130px auto;
      width:260px;
      height:260px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(255,79,123,.34),transparent 68%);
      pointer-events:none;
    }
    .hero-badges{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:22px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 12px;
      border-radius:999px;
      color:#fff;
      font-size:13px;
      font-weight:700;
      background:rgba(255,255,255,.08);
      border:1px solid var(--border);
    }
    .badge.hot{
      background:rgba(248,195,91,.12);
      border-color:rgba(248,195,91,.28);
      color:#ffe3a4;
    }
    h1{
      max-width:790px;
      font-size:clamp(38px,6vw,70px);
      line-height:1.05;
      letter-spacing:-1.6px;
      margin-bottom:22px;
    }
    .hero-subtitle{
      max-width:760px;
      color:#d5d9e5;
      font-size:18px;
      margin-bottom:30px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-bottom:28px;
    }
    .hero-note{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      max-width:790px;
    }
    .note-item{
      padding:16px;
      border-radius:18px;
      background:rgba(255,255,255,.06);
      border:1px solid var(--border);
    }
    .note-item strong{
      display:block;
      font-size:20px;
      color:#fff;
      margin-bottom:3px;
    }
    .note-item span{
      color:var(--text-muted);
      font-size:13px;
    }

    .grid-3{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:20px;
    }
    .grid-2{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:24px;
    }
    .card{
      position:relative;
      border:1px solid var(--border);
      background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.035));
      border-radius:var(--radius);
      padding:26px;
      box-shadow:var(--shadow-soft);
      transition:transform var(--ease),border-color var(--ease),background var(--ease);
      overflow:hidden;
    }
    .card:hover{
      transform:translateY(-5px);
      border-color:rgba(255,79,123,.32);
      background:linear-gradient(180deg,rgba(255,255,255,.09),rgba(255,255,255,.045));
    }
    .card-icon{
      width:52px;
      height:52px;
      border-radius:18px;
      display:grid;
      place-items:center;
      color:#fff;
      font-size:22px;
      font-weight:900;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      margin-bottom:18px;
    }
    .card h3{
      font-size:21px;
      line-height:1.3;
      margin-bottom:10px;
    }
    .card p{
      color:var(--text-muted);
      font-size:15px;
    }
    .card .tag-row{
      margin-top:18px;
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      padding:6px 10px;
      border-radius:999px;
      color:#d9deec;
      font-size:12px;
      background:rgba(255,255,255,.06);
      border:1px solid var(--border);
    }

    .feature-split{
      display:grid;
      grid-template-columns:1.02fr .98fr;
      gap:34px;
      align-items:center;
    }
    .image-card{
      border-radius:32px;
      overflow:hidden;
      border:1px solid var(--border-strong);
      box-shadow:var(--shadow);
      background:var(--bg-card);
      position:relative;
    }
    .image-card img{
      width:100%;
      height:430px;
      object-fit:cover;
      filter:saturate(1.08) contrast(1.04);
    }
    .image-card::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,transparent 40%,rgba(9,11,18,.68));
      pointer-events:none;
    }
    .image-caption{
      position:absolute;
      left:24px;
      right:24px;
      bottom:22px;
      z-index:1;
      padding:18px;
      border-radius:18px;
      background:rgba(9,11,18,.58);
      border:1px solid rgba(255,255,255,.14);
      backdrop-filter:blur(12px);
    }
    .image-caption strong{
      display:block;
      font-size:20px;
      margin-bottom:4px;
    }
    .image-caption span{
      color:var(--text-muted);
      font-size:14px;
    }
    .check-list{
      display:grid;
      gap:14px;
      margin-top:24px;
    }
    .check-list li{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:16px;
      border-radius:18px;
      background:rgba(255,255,255,.055);
      border:1px solid var(--border);
    }
    .check-list li::before{
      content:"✓";
      flex:0 0 auto;
      width:24px;
      height:24px;
      border-radius:50%;
      display:grid;
      place-items:center;
      color:#fff;
      font-size:13px;
      font-weight:900;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      margin-top:2px;
    }
    .check-list strong{
      display:block;
      margin-bottom:3px;
    }
    .check-list span{
      color:var(--text-muted);
      font-size:14px;
    }

    .scenario-wrap{
      padding:34px;
      border-radius:32px;
      background:
        linear-gradient(135deg,rgba(255,79,123,.09),rgba(124,92,255,.08)),
        rgba(255,255,255,.035);
      border:1px solid var(--border);
    }
    .scenario{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
    }
    .scenario-item{
      padding:22px;
      min-height:190px;
      border-radius:22px;
      background:rgba(9,11,18,.42);
      border:1px solid var(--border);
      transition:transform var(--ease),background var(--ease);
    }
    .scenario-item:hover{
      transform:translateY(-4px);
      background:rgba(255,255,255,.07);
    }
    .scenario-item em{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:36px;
      height:36px;
      border-radius:14px;
      font-style:normal;
      font-weight:900;
      color:#fff;
      background:var(--secondary-soft);
      border:1px solid rgba(124,92,255,.22);
      margin-bottom:16px;
    }
    .scenario-item h3{
      font-size:18px;
      margin-bottom:8px;
    }
    .scenario-item p{
      color:var(--text-muted);
      font-size:14px;
    }

    .steps{
      counter-reset:step;
      display:grid;
      gap:18px;
    }
    .step{
      counter-increment:step;
      display:grid;
      grid-template-columns:72px 1fr;
      gap:18px;
      align-items:start;
      padding:24px;
      border-radius:24px;
      background:rgba(255,255,255,.055);
      border:1px solid var(--border);
    }
    .step::before{
      content:counter(step,decimal-leading-zero);
      width:58px;
      height:58px;
      display:grid;
      place-items:center;
      border-radius:20px;
      color:#fff;
      font-size:18px;
      font-weight:900;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 12px 26px rgba(255,79,123,.2);
    }
    .step h3{
      font-size:20px;
      margin-bottom:7px;
    }
    .step p{
      color:var(--text-muted);
      font-size:15px;
    }

    .privacy-box{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:20px;
    }
    .notice-card{
      padding:28px;
      border-radius:var(--radius);
      border:1px solid var(--border);
      background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.03));
    }
    .notice-card.warning{
      border-color:rgba(248,195,91,.28);
      background:linear-gradient(180deg,rgba(248,195,91,.12),rgba(255,255,255,.035));
    }
    .notice-card h3{
      font-size:22px;
      margin-bottom:12px;
    }
    .notice-card p{
      color:var(--text-muted);
      margin-bottom:16px;
    }
    .mini-list{
      display:grid;
      gap:10px;
    }
    .mini-list li{
      color:#dce1ee;
      padding-left:18px;
      position:relative;
      font-size:14px;
    }
    .mini-list li::before{
      content:"";
      position:absolute;
      left:0;
      top:.75em;
      width:6px;
      height:6px;
      border-radius:50%;
      background:var(--primary);
    }

    .faq{
      display:grid;
      gap:14px;
    }
    .faq-item{
      border-radius:22px;
      border:1px solid var(--border);
      background:rgba(255,255,255,.055);
      overflow:hidden;
    }
    .faq-question{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:20px 22px;
      color:#fff;
      background:transparent;
      text-align:left;
      font-weight:800;
    }
    .faq-question span{
      width:30px;
      height:30px;
      flex:0 0 auto;
      display:grid;
      place-items:center;
      border-radius:50%;
      background:rgba(255,255,255,.08);
      transition:transform var(--ease),background var(--ease);
    }
    .faq-answer{
      display:none;
      padding:0 22px 22px;
      color:var(--text-muted);
      font-size:15px;
    }
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span{
      transform:rotate(45deg);
      background:var(--primary-soft);
    }

    .cta{
      padding:54px;
      border-radius:36px;
      background:
        linear-gradient(135deg,rgba(255,79,123,.24),rgba(124,92,255,.22)),
        url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
      border:1px solid var(--border-strong);
      box-shadow:var(--shadow);
      overflow:hidden;
      position:relative;
    }
    .cta::before{
      content:"";
      position:absolute;
      inset:0;
      background:rgba(9,11,18,.62);
      pointer-events:none;
    }
    .cta-content{
      position:relative;
      z-index:1;
      max-width:760px;
    }
    .cta h2{
      font-size:clamp(30px,4.4vw,52px);
      line-height:1.12;
      margin-bottom:14px;
    }
    .cta p{
      color:#d8dde9;
      margin-bottom:26px;
      font-size:17px;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
    }

    .site-footer{
      padding:62px 0 28px;
      border-top:1px solid var(--border);
      background:#070910;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.4fr .8fr .8fr .8fr;
      gap:34px;
      margin-bottom:34px;
    }
    .footer-brand p{
      margin:18px 0;
      color:var(--text-muted);
      font-size:14px;
      max-width:430px;
    }
    .age-warning{
      display:inline-flex;
      align-items:center;
      padding:7px 11px;
      border-radius:999px;
      color:#ffe3a4;
      background:rgba(248,195,91,.1);
      border:1px solid rgba(248,195,91,.28);
      font-size:13px;
      font-weight:800;
    }
    .footer-col h3{
      font-size:16px;
      margin-bottom:14px;
    }
    .footer-links{
      display:grid;
      gap:9px;
    }
    .footer-links a{
      color:var(--text-muted);
      font-size:14px;
      transition:color var(--ease),padding-left var(--ease);
    }
    .footer-links a:hover{
      color:#fff;
      padding-left:4px;
    }
    .footer-bottom{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding-top:24px;
      border-top:1px solid var(--border);
      color:var(--text-dim);
      font-size:13px;
    }

    @media (max-width:1024px){
      .nav-actions{display:none}
      .nav-menu a{padding:9px 12px}
      .feature-split,
      .grid-2,
      .privacy-box{
        grid-template-columns:1fr;
      }
      .grid-3,
      .scenario{
        grid-template-columns:repeat(2,1fr);
      }
      .footer-grid{
        grid-template-columns:1fr 1fr;
      }
    }

    @media (max-width:768px){
      :root{--header-h:70px}
      .container{width:min(100% - 28px,var(--container))}
      .site-header{height:auto;min-height:var(--header-h)}
      .nav-wrap{min-height:var(--header-h);flex-wrap:wrap}
      .menu-toggle{display:grid}
      nav{order:3;width:100%;justify-content:flex-end}
      .nav-menu{
        display:none;
        width:100%;
        margin-bottom:14px;
        border-radius:22px;
        padding:10px;
        flex-direction:column;
        align-items:stretch;
      }
      .nav-menu.show{display:flex}
      .nav-menu a{
        justify-content:flex-start;
        padding:12px 14px;
        border-radius:16px;
      }
      .category-hero{
        min-height:auto;
        padding:54px 0 46px;
      }
      .hero-panel{
        padding:28px;
        border-radius:26px;
      }
      .hero-note{
        grid-template-columns:1fr;
      }
      .section{padding:62px 0}
      .section-tight{padding:48px 0}
      .grid-3,
      .scenario{
        grid-template-columns:1fr;
      }
      .scenario-wrap{padding:22px}
      .step{
        grid-template-columns:1fr;
      }
      .step::before{
        width:52px;
        height:52px;
      }
      .image-card img{height:330px}
      .cta{padding:34px 24px}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{
        flex-direction:column;
        align-items:flex-start;
      }
    }

    @media (max-width:520px){
      .brand-text span{display:none}
      .brand-mark{width:40px;height:40px;border-radius:14px}
      h1{font-size:36px}
      .hero-subtitle{font-size:16px}
      .hero-actions,
      .cta-actions{
        flex-direction:column;
      }
      .btn{width:100%}
      .card{padding:22px}
      .section h2{font-size:28px}
      .image-caption{
        left:14px;
        right:14px;
        bottom:14px;
      }
    }

/* roulang page: category2 */
:root {
      --ink: #17212b;
      --muted: #667482;
      --paper: #f5f7f8;
      --surface: #ffffff;
      --line: #dfe5e8;
      --navy: #0c2638;
      --teal: #087f7b;
      --teal-dark: #056763;
      --coral: #e85d46;
      --gold: #edb65b;
      --soft-teal: #e5f3f1;
      --soft-coral: #fff0ec;
      --radius-sm: 10px;
      --radius: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 5px 16px rgba(17, 42, 56, .07);
      --shadow: 0 18px 45px rgba(17, 42, 56, .12);
      --container: 1160px;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--ink);
      background: var(--paper);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.7;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; width: 100%; max-width: 100%; }
    button, input { font: inherit; }
    button { cursor: pointer; }
    :focus-visible { outline: 3px solid rgba(232, 93, 70, .42); outline-offset: 3px; }

    .container { width: min(calc(100% - 48px), var(--container)); margin: 0 auto; }
    .site-header {
      position: sticky;
      z-index: 30;
      top: 0;
      background: rgba(255, 255, 255, .94);
      border-bottom: 1px solid rgba(223, 229, 232, .9);
      backdrop-filter: blur(14px);
    }
    .nav-wrap { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 22px; }
    .brand { display: inline-flex; align-items: center; flex-shrink: 0; gap: 10px; }
    .brand-mark {
      width: 39px;
      height: 39px;
      display: grid;
      place-items: center;
      border-radius: 12px;
      color: #fff;
      font-size: 20px;
      font-weight: 800;
      background: var(--coral);
      box-shadow: 0 7px 16px rgba(232, 93, 70, .28);
    }
    .brand-text { display: grid; line-height: 1.15; }
    .brand-text strong { font-size: 17px; letter-spacing: 0; }
    .brand-text span { margin-top: 3px; color: var(--muted); font-size: 11px; }
    nav { margin-left: auto; }
    .nav-menu { display: flex; align-items: center; gap: 6px; padding: 0; margin: 0; list-style: none; }
    .nav-menu a {
      display: inline-flex;
      align-items: center;
      min-height: 40px;
      padding: 0 13px;
      border-radius: 9px;
      color: #435260;
      font-size: 14px;
      font-weight: 650;
      transition: color .2s ease, background .2s ease;
    }
    .nav-menu a:hover, .nav-menu a.active { color: var(--teal-dark); background: var(--soft-teal); }
    .nav-actions { display: flex; align-items: center; }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 46px;
      padding: 0 20px;
      border: 1px solid transparent;
      border-radius: 10px;
      font-size: 14px;
      font-weight: 750;
      letter-spacing: 0;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    }
    .btn:hover { transform: translateY(-2px); }
    .btn:active { transform: translateY(0); }
    .btn-primary { color: #fff; background: var(--teal); box-shadow: 0 8px 18px rgba(8, 127, 123, .22); }
    .btn-primary:hover { background: var(--teal-dark); box-shadow: 0 12px 24px rgba(8, 127, 123, .29); }
    .btn-secondary { color: var(--navy); background: #fff; border-color: #c8d4d8; }
    .btn-secondary:hover { border-color: var(--teal); color: var(--teal-dark); }
    .menu-toggle { display: none; border: 0; background: transparent; font-size: 24px; color: var(--navy); }

    .hero {
      position: relative;
      overflow: hidden;
      min-height: 455px;
      display: grid;
      align-items: end;
      color: #fff;
      background: #133447 url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    }
    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(8, 27, 40, .91) 0%, rgba(9, 37, 50, .74) 52%, rgba(9, 37, 50, .39) 100%);
    }
    .hero .container { position: relative; padding: 82px 0 73px; }
    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin: 0 0 18px;
      color: #fff1d5;
      font-size: 13px;
      font-weight: 750;
    }
    .eyebrow::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 5px rgba(237, 182, 91, .16); }
    h1, h2, h3, p { margin-top: 0; }
    h1 { max-width: 760px; margin-bottom: 18px; font-size: clamp(34px, 5vw, 58px); line-height: 1.18; letter-spacing: 0; }
    .hero-copy { max-width: 720px; margin-bottom: 28px; color: rgba(255,255,255,.85); font-size: 17px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero .btn-primary { background: var(--coral); box-shadow: 0 10px 23px rgba(0,0,0,.2); }
    .hero .btn-primary:hover { background: #d94d37; }
    .hero .btn-secondary { border-color: rgba(255,255,255,.48); color: #fff; background: rgba(255,255,255,.1); }
    .hero .btn-secondary:hover { border-color: #fff; background: rgba(255,255,255,.18); color: #fff; }

    main { overflow: hidden; }
    .section { padding: 86px 0; }
    .section-white { background: var(--surface); }
    .section-heading { max-width: 700px; margin-bottom: 40px; }
    .section-kicker { margin-bottom: 10px; color: var(--coral); font-size: 13px; font-weight: 800; }
    h2 { margin-bottom: 13px; color: var(--navy); font-size: clamp(27px, 3.2vw, 39px); line-height: 1.25; letter-spacing: 0; }
    .section-heading p { margin-bottom: 0; color: var(--muted); }

    .quality-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .quality-card {
      min-height: 225px;
      padding: 27px;
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .quality-card:hover { transform: translateY(-5px); border-color: #aed5d1; box-shadow: var(--shadow); }
    .card-icon {
      width: 46px; height: 46px; display: grid; place-items: center; margin-bottom: 22px;
      border-radius: 13px; color: var(--teal-dark); background: var(--soft-teal); font-size: 21px; font-weight: 800;
    }
    .quality-card:nth-child(2) .card-icon { color: #b94330; background: var(--soft-coral); }
    .quality-card:nth-child(3) .card-icon { color: #9a691a; background: #fff6e3; }
    .quality-card h3 { margin-bottom: 8px; color: var(--navy); font-size: 19px; line-height: 1.35; }
    .quality-card p { margin-bottom: 0; color: var(--muted); font-size: 14px; }

    .feature-panel { display: grid; grid-template-columns: .92fr 1.08fr; overflow: hidden; background: var(--navy); border-radius: var(--radius-lg); }
    .feature-image { min-height: 430px; }
    .feature-image img { height: 100%; object-fit: cover; }
    .feature-copy { padding: 58px clamp(30px, 5vw, 72px); color: #d6e3e7; }
    .feature-copy h2 { color: #fff; }
    .feature-copy > p { max-width: 560px; }
    .check-list { display: grid; gap: 15px; padding: 0; margin: 29px 0 0; list-style: none; }
    .check-list li { position: relative; padding-left: 31px; font-size: 15px; }
    .check-list li::before {
      content: "✓"; position: absolute; left: 0; top: 1px; width: 20px; height: 20px; display: grid; place-items: center;
      color: #052f2e; background: #72cbbd; border-radius: 50%; font-size: 12px; font-weight: 900;
    }

    .scene-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
    .scene-card { display: grid; grid-template-columns: 190px 1fr; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); transition: transform .2s ease, box-shadow .2s ease; }
    .scene-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
    .scene-card img { height: 100%; min-height: 205px; object-fit: cover; }
    .scene-body { padding: 25px 24px; }
    .badge { display: inline-flex; align-items: center; min-height: 25px; padding: 0 9px; border-radius: 99px; color: var(--teal-dark); background: var(--soft-teal); font-size: 12px; font-weight: 800; }
    .scene-body h3 { margin: 12px 0 8px; color: var(--navy); font-size: 19px; line-height: 1.35; }
    .scene-body p { margin-bottom: 0; color: var(--muted); font-size: 14px; }

    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: process; }
    .step { position: relative; padding: 25px 21px 21px; border-top: 3px solid var(--teal); background: var(--surface); box-shadow: var(--shadow-sm); }
    .step::before { counter-increment: process; content: "0" counter(process); display: block; margin-bottom: 18px; color: #9ac4c1; font-size: 28px; font-weight: 850; line-height: 1; }
    .step h3 { margin-bottom: 7px; color: var(--navy); font-size: 17px; }
    .step p { margin-bottom: 0; color: var(--muted); font-size: 14px; }

    .info-band { background: #edf5f4; }
    .notice-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 44px; align-items: center; }
    .notice-text p { max-width: 670px; color: var(--muted); }
    .notice-list { display: grid; gap: 10px; padding: 0; margin: 22px 0 0; list-style: none; }
    .notice-list li { padding: 12px 15px; border-left: 3px solid var(--coral); background: rgba(255,255,255,.78); color: #40515c; font-size: 14px; }
    .notice-side { padding: 31px; border: 1px solid #c7dfdc; border-radius: var(--radius); background: #fff; }
    .notice-side strong { display: block; margin-bottom: 8px; color: var(--coral); font-size: 31px; line-height: 1; }
    .notice-side h3 { margin-bottom: 9px; color: var(--navy); font-size: 19px; }
    .notice-side p { margin-bottom: 0; color: var(--muted); font-size: 14px; }

    .faq-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 55px; align-items: start; }
    .faq-intro { position: sticky; top: 104px; }
    .faq-intro p { color: var(--muted); }
    .faq-list { display: grid; gap: 11px; }
    .faq-item { border: 1px solid var(--line); border-radius: var(--radius-sm); background: #fff; overflow: hidden; }
    .faq-item summary { position: relative; padding: 19px 52px 19px 21px; color: var(--navy); cursor: pointer; font-size: 16px; font-weight: 750; list-style: none; }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after { content: "+"; position: absolute; right: 21px; top: 15px; color: var(--teal); font-size: 25px; font-weight: 400; transition: transform .2s ease; }
    .faq-item[open] { border-color: #a9d4cf; }
    .faq-item[open] summary::after { transform: rotate(45deg); }
    .faq-item p { padding: 0 21px 20px; margin: 0; color: var(--muted); font-size: 14px; }

    .cta { padding: 80px 0; color: #fff; background: var(--coral) url('/assets/images/backpic/back-3.webp') center/cover no-repeat; background-blend-mode: multiply; }
    .cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
    .cta h2 { max-width: 680px; margin-bottom: 11px; color: #fff; }
    .cta p { max-width: 660px; margin-bottom: 0; color: rgba(255,255,255,.88); }
    .cta .btn { flex-shrink: 0; color: #9e3321; background: #fff; }
    .cta .btn:hover { color: #7d2517; box-shadow: 0 12px 25px rgba(64, 18, 10, .18); }

    .site-footer { padding: 66px 0 24px; color: #aebec6; background: #0b202d; }
    .footer-grid { display: grid; grid-template-columns: 1.55fr repeat(3, 1fr); gap: 38px; padding-bottom: 48px; }
    .site-footer .brand { color: #fff; }
    .site-footer .brand-text span { color: #9eb1ba; }
    .footer-brand p { max-width: 410px; margin: 21px 0 16px; font-size: 13px; line-height: 1.75; }
    .age-warning { display: inline-flex; padding: 4px 10px; border: 1px solid rgba(237, 182, 91, .48); border-radius: 99px; color: #f3cc87; font-size: 12px; font-weight: 800; }
    .footer-col h3 { margin-bottom: 14px; color: #fff; font-size: 15px; }
    .footer-links { display: grid; gap: 9px; padding: 0; margin: 0; list-style: none; }
    .footer-links a { font-size: 13px; transition: color .2s ease; }
    .footer-links a:hover { color: #fff; }
    .footer-bottom { display: flex; justify-content: space-between; gap: 22px; padding-top: 22px; border-top: 1px solid rgba(174,190,198,.18); color: #8196a0; font-size: 12px; }

    @media (max-width: 1024px) {
      .nav-menu a { padding: 0 8px; font-size: 13px; }
      .quality-grid { gap: 14px; }
      .scene-grid { gap: 16px; }
      .footer-grid { grid-template-columns: 1.4fr repeat(3, 1fr); gap: 22px; }
    }
    @media (max-width: 768px) {
      .container { width: min(calc(100% - 32px), var(--container)); }
      .nav-wrap { min-height: 68px; gap: 12px; }
      .nav-actions { display: none; }
      nav { margin-left: auto; }
      .menu-toggle { display: block; padding: 7px; }
      .nav-menu { position: absolute; left: 16px; right: 16px; top: 67px; display: none; padding: 10px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: #fff; box-shadow: var(--shadow); }
      .nav-menu.open { display: grid; }
      .nav-menu a { width: 100%; padding: 0 13px; }
      .hero { min-height: 420px; }
      .hero .container { padding: 68px 0 60px; }
      .quality-grid, .steps { grid-template-columns: repeat(2, 1fr); }
      .feature-panel, .notice-grid, .faq-layout { grid-template-columns: 1fr; }
      .feature-image { min-height: 290px; }
      .faq-intro { position: static; }
      .scene-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .footer-brand { grid-column: 1 / -1; }
      .cta-inner { align-items: flex-start; flex-direction: column; }
    }
    @media (max-width: 520px) {
      .container { width: min(calc(100% - 28px), var(--container)); }
      .brand-mark { width: 35px; height: 35px; border-radius: 10px; }
      .brand-text strong { font-size: 15px; }
      .brand-text span { font-size: 10px; }
      .hero { min-height: 455px; background-position: 62% center; }
      h1 { font-size: 34px; }
      .hero-copy { font-size: 15px; }
      .hero-actions .btn { width: 100%; }
      .section { padding: 60px 0; }
      .quality-grid, .steps { grid-template-columns: 1fr; }
      .quality-card { min-height: auto; }
      .scene-card { grid-template-columns: 1fr; }
      .scene-card img { height: 190px; min-height: 0; }
      .feature-copy { padding: 38px 24px; }
      .notice-side { padding: 25px; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-brand { grid-column: auto; }
      .footer-bottom { align-items: flex-start; flex-direction: column; gap: 5px; }
    }