/* roulang page: index */
:root {
      --bg: #08090d;
      --bg-soft: #10131b;
      --panel: rgba(21, 24, 34, .82);
      --panel-strong: rgba(31, 35, 49, .92);
      --text: #f7f8fb;
      --muted: #a9b0bf;
      --weak: #717987;
      --line: rgba(255, 255, 255, .12);
      --line-strong: rgba(255, 255, 255, .2);
      --accent: #39ffb6;
      --accent-2: #ffcf3d;
      --accent-3: #ff4fd8;
      --danger: #ff5b6e;
      --radius-sm: 12px;
      --radius: 20px;
      --radius-lg: 30px;
      --shadow: 0 22px 70px rgba(0, 0, 0, .35);
      --glow: 0 0 34px rgba(57, 255, 182, .22);
      --container: 1180px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      min-height: 100vh;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      line-height: 1.7;
      color: var(--text);
      background:
        radial-gradient(circle at 12% 5%, rgba(57, 255, 182, .18), transparent 28%),
        radial-gradient(circle at 84% 14%, rgba(255, 79, 216, .15), transparent 25%),
        linear-gradient(180deg, #08090d 0%, #0d0f16 46%, #090a0f 100%);
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      opacity: .28;
      background-image:
        linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
      background-size: 48px 48px;
      mask-image: linear-gradient(to bottom, #000, transparent 78%);
      z-index: -1;
    }

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

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

    button,
    input {
      font: inherit;
    }

    button {
      border: 0;
      cursor: pointer;
    }

    input {
      border: 0;
      outline: 0;
    }

    ::selection {
      background: rgba(57, 255, 182, .32);
      color: #fff;
    }

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      border-bottom: 1px solid var(--line);
      background: rgba(8, 9, 13, .78);
      backdrop-filter: blur(20px);
      box-shadow: 0 12px 40px rgba(0, 0, 0, .18);
    }

    .nav-shell {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
      font-weight: 900;
      letter-spacing: 0;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      color: #06110d;
      background: linear-gradient(135deg, var(--accent), var(--accent-2) 54%, var(--accent-3));
      box-shadow: var(--glow);
      font-weight: 1000;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.2;
    }

    .brand-title {
      max-width: 250px;
      overflow: hidden;
      white-space: nowrap;
      text-overflow: ellipsis;
      font-size: 16px;
    }

    .brand-sub {
      color: var(--muted);
      font-size: 12px;
      font-weight: 600;
    }

    .nav-tabs {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 7px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: rgba(255, 255, 255, .045);
      overflow-x: auto;
      scrollbar-width: none;
    }

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

    .nav-link {
      flex: 0 0 auto;
      padding: 9px 14px;
      border-radius: 999px;
      color: var(--muted);
      font-size: 14px;
      font-weight: 800;
      transition: color .2s ease, background .2s ease, box-shadow .2s ease, transform .2s ease;
    }

    .nav-link:hover,
    .nav-link:focus {
      color: var(--text);
      background: rgba(255, 255, 255, .08);
      outline: none;
    }

    .nav-link.active {
      color: #07110d;
      background: linear-gradient(135deg, var(--accent), var(--accent-2));
      box-shadow: 0 10px 24px rgba(57, 255, 182, .2);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 42px;
      padding: 0 18px;
      border-radius: 999px;
      color: #07110d;
      background: var(--accent);
      font-weight: 900;
      white-space: nowrap;
      box-shadow: var(--glow);
      transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
    }

    .nav-cta:hover,
    .nav-cta:focus {
      transform: translateY(-2px);
      filter: brightness(1.05);
      outline: none;
      box-shadow: 0 0 44px rgba(57, 255, 182, .3);
    }

    .nav-cta:active,
    .btn:active {
      transform: translateY(0) scale(.98);
    }

    .hero {
      padding: 34px 0 54px;
    }

    .flash-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 12px 16px;
      border: 1px solid rgba(255, 207, 61, .32);
      border-radius: var(--radius);
      background: linear-gradient(90deg, rgba(255, 207, 61, .16), rgba(255, 79, 216, .12), rgba(57, 255, 182, .12));
      box-shadow: 0 18px 54px rgba(0, 0, 0, .22);
    }

    .flash-left,
    .countdown {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-wrap: wrap;
    }

    .flash-badge {
      display: inline-flex;
      align-items: center;
      padding: 5px 10px;
      border-radius: 999px;
      color: #171104;
      background: var(--accent-2);
      font-size: 13px;
      font-weight: 1000;
    }

    .time-box {
      min-width: 40px;
      padding: 5px 8px;
      border-radius: 10px;
      color: #07110d;
      background: var(--accent);
      font-weight: 1000;
      text-align: center;
    }

    .hero-stage {
      margin-top: 20px;
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 20px;
      align-items: stretch;
    }

    .hero-copy {
      min-height: 520px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: 58px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(57, 255, 182, .14), transparent 32%),
        linear-gradient(160deg, rgba(255, 79, 216, .12), rgba(255, 207, 61, .08) 48%, rgba(17, 19, 26, .86));
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }

    .hero-copy::after {
      content: "";
      position: absolute;
      inset: auto -80px -120px auto;
      width: 310px;
      height: 310px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(57, 255, 182, .26), transparent 66%);
      pointer-events: none;
    }

    .eyebrow {
      display: inline-flex;
      width: fit-content;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border: 1px solid var(--line-strong);
      border-radius: 999px;
      color: var(--accent);
      background: rgba(255, 255, 255, .055);
      font-size: 13px;
      font-weight: 900;
    }

    h1 {
      margin: 20px 0 18px;
      max-width: 780px;
      font-size: clamp(38px, 6vw, 76px);
      line-height: 1.05;
      letter-spacing: 0;
      font-weight: 1000;
    }

    .hero-desc {
      max-width: 720px;
      color: #d9deea;
      font-size: 18px;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 0 20px;
      border-radius: 15px;
      font-weight: 950;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
    }

    .btn-primary {
      color: #06110d;
      background: linear-gradient(135deg, var(--accent), var(--accent-2));
      box-shadow: var(--glow);
    }

    .btn-primary:hover,
    .btn-primary:focus {
      transform: translateY(-2px);
      box-shadow: 0 18px 44px rgba(57, 255, 182, .24);
      outline: none;
    }

    .btn-ghost {
      color: var(--text);
      border: 1px solid var(--line-strong);
      background: rgba(255, 255, 255, .06);
    }

    .btn-ghost:hover,
    .btn-ghost:focus {
      transform: translateY(-2px);
      border-color: rgba(57, 255, 182, .48);
      background: rgba(57, 255, 182, .1);
      outline: none;
    }

    .quick-stats {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-top: 34px;
      max-width: 680px;
    }

    .stat-mini {
      padding: 14px;
      border: 1px solid var(--line);
      border-radius: 16px;
      background: rgba(255, 255, 255, .052);
    }

    .stat-mini strong {
      display: block;
      font-size: 24px;
      line-height: 1.2;
      color: var(--accent-2);
    }

    .stat-mini span {
      color: var(--muted);
      font-size: 13px;
      font-weight: 700;
    }

    .deal-card {
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: linear-gradient(180deg, rgba(25, 28, 40, .95), rgba(12, 14, 20, .95));
      box-shadow: var(--shadow);
      overflow: hidden;
      position: relative;
    }

    .deal-card::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(135deg, transparent 0 38%, rgba(57, 255, 182, .08) 38% 39%, transparent 39% 100%),
        radial-gradient(circle at 82% 16%, rgba(255, 79, 216, .22), transparent 28%);
      pointer-events: none;
    }

    .deal-inner {
      position: relative;
      z-index: 1;
      height: 100%;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .product-panel {
      padding: 20px;
      border-radius: 24px;
      border: 1px solid rgba(57, 255, 182, .28);
      background: rgba(57, 255, 182, .08);
    }

    .product-top {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      align-items: flex-start;
      margin-bottom: 14px;
    }

    .price-tag {
      font-size: 42px;
      line-height: 1;
      color: var(--accent);
      font-weight: 1000;
    }

    .product-title {
      font-size: 24px;
      line-height: 1.25;
      font-weight: 1000;
      margin: 8px 0;
    }

    .task-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
    }

    .task-item {
      min-height: 94px;
      padding: 14px;
      border: 1px solid var(--line);
      border-radius: 16px;
      background: rgba(255, 255, 255, .055);
      transition: transform .2s ease, border-color .2s ease, background .2s ease;
    }

    .task-item:hover {
      transform: translateY(-3px);
      border-color: rgba(57, 255, 182, .38);
      background: rgba(255, 255, 255, .08);
    }

    .task-item b {
      display: block;
      margin-bottom: 4px;
      font-size: 15px;
    }

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

    .progress-card {
      padding: 16px;
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255, 255, 255, .05);
    }

    .progress-track {
      height: 9px;
      margin-top: 10px;
      overflow: hidden;
      border-radius: 999px;
      background: rgba(255, 255, 255, .12);
    }

    .progress-fill {
      height: 100%;
      width: 76%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
    }

    main {
      position: relative;
      z-index: 2;
    }

    .section {
      padding: 48px 0;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 28px;
      margin-bottom: 22px;
    }

    .section-kicker {
      color: var(--accent);
      font-size: 13px;
      font-weight: 950;
    }

    .section-title {
      margin: 4px 0 8px;
      font-size: clamp(26px, 3vw, 42px);
      line-height: 1.2;
      font-weight: 1000;
    }

    .section-desc {
      max-width: 760px;
      color: var(--muted);
      font-size: 16px;
    }

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

    .pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 9px 13px;
      border: 1px solid var(--line);
      border-radius: 999px;
      color: var(--muted);
      background: rgba(255, 255, 255, .052);
      font-weight: 800;
      font-size: 14px;
      transition: transform .2s ease, border-color .2s ease, color .2s ease, background .2s ease;
    }

    .pill:hover,
    .pill:focus {
      transform: translateY(-2px);
      color: var(--text);
      border-color: rgba(57, 255, 182, .42);
      background: rgba(57, 255, 182, .09);
      outline: none;
    }

    .pill.active {
      color: #07110d;
      background: linear-gradient(135deg, var(--accent), var(--accent-2));
    }

    .category-band {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 18px;
      align-items: stretch;
    }

    .category-card {
      min-height: 220px;
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--panel);
      box-shadow: 0 18px 50px rgba(0, 0, 0, .2);
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }

    .category-card:hover {
      transform: translateY(-5px);
      border-color: rgba(57, 255, 182, .42);
      box-shadow: var(--glow);
    }

    .category-card.featured {
      background:
        linear-gradient(135deg, rgba(57, 255, 182, .14), rgba(255, 79, 216, .08)),
        var(--panel-strong);
    }

    .card-icon {
      width: 46px;
      height: 46px;
      display: grid;
      place-items: center;
      border-radius: 16px;
      color: #07110d;
      background: linear-gradient(135deg, var(--accent), var(--accent-2));
      font-weight: 1000;
      box-shadow: var(--glow);
    }

    .category-card h3,
    .resource-card h3,
    .topic-card h3,
    .step-card h3,
    .update-item h3 {
      margin: 14px 0 8px;
      font-size: 20px;
      line-height: 1.3;
      font-weight: 1000;
    }

    .category-card p,
    .resource-card p,
    .topic-card p,
    .step-card p,
    .update-item p {
      color: var(--muted);
      margin: 0;
    }

    .resource-layout {
      display: grid;
      grid-template-columns: 1.25fr .75fr;
      gap: 18px;
    }

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

    .resource-card {
      display: grid;
      grid-template-columns: 78px 1fr auto;
      gap: 16px;
      align-items: center;
      padding: 16px;
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255, 255, 255, .05);
      transition: transform .2s ease, border-color .2s ease, background .2s ease;
    }

    .resource-card:hover {
      transform: translateX(4px);
      border-color: rgba(255, 207, 61, .42);
      background: rgba(255, 255, 255, .075);
    }

    .resource-thumb {
      width: 78px;
      height: 58px;
      border-radius: 14px;
      background:
        linear-gradient(135deg, rgba(57, 255, 182, .86), rgba(255, 207, 61, .78)),
        repeating-linear-gradient(45deg, rgba(255,255,255,.12) 0 8px, transparent 8px 16px);
      position: relative;
      overflow: hidden;
    }

    .resource-thumb::after {
      content: "";
      position: absolute;
      left: 31px;
      top: 17px;
      width: 0;
      height: 0;
      border-top: 12px solid transparent;
      border-bottom: 12px solid transparent;
      border-left: 18px solid rgba(8, 9, 13, .78);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      width: fit-content;
      padding: 5px 9px;
      border-radius: 999px;
      color: var(--accent);
      background: rgba(57, 255, 182, .1);
      border: 1px solid rgba(57, 255, 182, .18);
      font-size: 12px;
      font-weight: 900;
    }

    .side-panel,
    .info-panel {
      padding: 20px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, .05);
    }

    .check-list {
      display: grid;
      gap: 12px;
      margin: 16px 0 0;
      padding: 0;
      list-style: none;
    }

    .check-list li {
      display: flex;
      gap: 10px;
      color: #d7dce7;
    }

    .check-list li::before {
      content: "✓";
      flex: 0 0 22px;
      width: 22px;
      height: 22px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: #06110d;
      background: var(--accent);
      font-size: 13px;
      font-weight: 1000;
      margin-top: 2px;
    }

    .news-layout {
      display: grid;
      grid-template-columns: 1fr 340px;
      gap: 18px;
    }

    .news-list {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      overflow: hidden;
      background: rgba(255, 255, 255, .045);
    }

    .news-link {
      display: grid;
      grid-template-columns: 120px 1fr auto;
      gap: 14px;
      align-items: center;
      padding: 16px 18px;
      border-bottom: 1px solid var(--line);
      transition: background .2s ease, color .2s ease;
    }

    .news-link:last-child {
      border-bottom: 0;
    }

    .news-link:hover,
    .news-link:focus {
      background: rgba(57, 255, 182, .08);
      outline: none;
    }

    .news-date {
      color: var(--weak);
      font-size: 13px;
      font-weight: 800;
    }

    .news-title {
      color: #eef2f8;
      font-weight: 900;
    }

    .news-arrow {
      color: var(--accent);
      font-weight: 1000;
    }

    .recommend-panel {
      padding: 20px;
      border: 1px solid rgba(255, 207, 61, .22);
      border-radius: var(--radius);
      background: linear-gradient(180deg, rgba(255, 207, 61, .1), rgba(255, 255, 255, .045));
    }

    .topic-grid {
      display: grid;
      grid-template-columns: 1.15fr .85fr 1fr;
      gap: 16px;
    }

    .topic-card {
      min-height: 190px;
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, .05);
      transition: transform .2s ease, border-color .2s ease;
    }

    .topic-card:hover {
      transform: translateY(-4px);
      border-color: rgba(255, 79, 216, .36);
    }

    .topic-card.tall {
      min-height: 250px;
      background: linear-gradient(135deg, rgba(255, 79, 216, .13), rgba(57, 255, 182, .08));
    }

    .metric-panel {
      display: grid;
      grid-template-columns: .9fr 1.1fr;
      gap: 18px;
      padding: 24px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: linear-gradient(135deg, rgba(20, 23, 33, .94), rgba(11, 13, 18, .94));
      box-shadow: var(--shadow);
    }

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

    .metric-card {
      padding: 18px;
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255, 255, 255, .052);
    }

    .metric-card strong {
      display: block;
      color: var(--accent-2);
      font-size: 34px;
      line-height: 1.15;
      font-weight: 1000;
    }

    .metric-card span {
      color: var(--muted);
      font-weight: 700;
    }

    .steps {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
    }

    .step-card {
      padding: 22px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: rgba(255, 255, 255, .05);
      position: relative;
      overflow: hidden;
    }

    .step-number {
      width: 38px;
      height: 38px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      color: #07110d;
      background: var(--accent-2);
      font-weight: 1000;
    }

    .updates {
      display: grid;
      grid-template-columns: 320px 1fr;
      gap: 18px;
      align-items: start;
    }

    .timeline {
      display: grid;
      gap: 12px;
    }

    .update-item {
      padding: 18px;
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255, 255, 255, .05);
      position: relative;
    }

    .update-item::before {
      content: "";
      position: absolute;
      left: -1px;
      top: 18px;
      bottom: 18px;
      width: 3px;
      border-radius: 999px;
      background: linear-gradient(var(--accent), var(--accent-3));
    }

    .faq-wrap {
      display: grid;
      gap: 12px;
    }

    .faq-item {
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(255, 255, 255, .05);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 20px;
      color: var(--text);
      background: transparent;
      text-align: left;
      font-weight: 950;
    }

    .faq-question:hover,
    .faq-question:focus {
      background: rgba(57, 255, 182, .07);
      outline: none;
    }

    .faq-icon {
      width: 28px;
      height: 28px;
      flex: 0 0 28px;
      display: grid;
      place-items: center;
      border-radius: 50%;
      color: #07110d;
      background: var(--accent);
      transition: transform .2s ease;
    }

    .faq-answer {
      display: none;
      padding: 0 20px 20px;
      color: var(--muted);
    }

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

    .faq-item.open .faq-icon {
      transform: rotate(45deg);
    }

    .download-section {
      padding-bottom: 94px;
    }

    .download-card {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 22px;
      align-items: center;
      padding: 28px;
      border: 1px solid rgba(57, 255, 182, .28);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(57, 255, 182, .18), rgba(255, 207, 61, .1) 44%, rgba(255, 79, 216, .12)),
        rgba(18, 21, 30, .9);
      box-shadow: var(--shadow);
    }

    .search-box {
      display: flex;
      gap: 10px;
      padding: 10px;
      border: 1px solid var(--line);
      border-radius: 18px;
      background: rgba(8, 9, 13, .48);
    }

    .search-box input {
      flex: 1;
      min-width: 0;
      padding: 0 12px;
      color: var(--text);
      background: transparent;
    }

    .search-box input::placeholder {
      color: var(--weak);
    }

    .fixed-cta {
      position: fixed;
      left: 50%;
      bottom: 16px;
      transform: translateX(-50%);
      z-index: 45;
      width: min(760px, calc(100% - 28px));
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 12px 14px 12px 18px;
      border: 1px solid rgba(57, 255, 182, .28);
      border-radius: 20px;
      background: rgba(12, 14, 20, .88);
      backdrop-filter: blur(18px);
      box-shadow: 0 18px 58px rgba(0, 0, 0, .42);
    }

    .fixed-cta strong {
      display: block;
      line-height: 1.25;
    }

    .fixed-cta span {
      color: var(--muted);
      font-size: 13px;
    }

    .site-footer {
      padding: 48px 0 34px;
      border-top: 1px solid var(--line);
      background: rgba(5, 6, 9, .72);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr .8fr .8fr;
      gap: 26px;
    }

    .footer-title {
      margin: 0 0 12px;
      font-size: 18px;
      font-weight: 1000;
    }

    .footer-text,
    .footer-link,
    .copyright {
      color: var(--muted);
      font-size: 14px;
    }

    .footer-links {
      display: grid;
      gap: 8px;
    }

    .footer-link {
      transition: color .2s ease;
    }

    .footer-link:hover,
    .footer-link:focus {
      color: var(--accent);
      outline: none;
    }

    .footer-bottom {
      margin-top: 28px;
      padding-top: 20px;
      border-top: 1px solid var(--line);
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
    }

    @media (max-width: 1024px) {
      .nav-shell {
        flex-wrap: wrap;
        padding: 14px 0;
      }

      .nav-tabs {
        order: 3;
        width: 100%;
      }

      .hero-stage,
      .category-band,
      .resource-layout,
      .news-layout,
      .metric-panel,
      .updates,
      .download-card {
        grid-template-columns: 1fr;
      }

      .hero-copy {
        min-height: auto;
        padding: 40px;
      }

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

      .topic-card.tall {
        grid-column: span 2;
        min-height: 210px;
      }
    }

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

      .brand-title {
        max-width: 190px;
      }

      .nav-cta {
        padding: 0 14px;
      }

      .flash-bar,
      .section-head,
      .fixed-cta {
        align-items: flex-start;
        flex-direction: column;
      }

      .hero-copy {
        padding: 28px;
        border-radius: 24px;
      }

      .quick-stats,
      .task-grid,
      .metric-grid,
      .steps,
      .topic-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .topic-card.tall {
        grid-column: auto;
      }

      .resource-card {
        grid-template-columns: 64px 1fr;
      }

      .resource-card .btn {
        grid-column: 1 / -1;
        width: 100%;
      }

      .news-link {
        grid-template-columns: 1fr auto;
      }

      .news-date {
        grid-column: 1 / -1;
      }

      .search-box {
        flex-direction: column;
      }

      .search-box .btn {
        width: 100%;
      }

      .fixed-cta {
        display: none;
      }

      .download-section {
        padding-bottom: 48px;
      }
    }

    @media (max-width: 520px) {
      .nav-shell {
        gap: 12px;
      }

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

      .brand-sub {
        display: none;
      }

      .hero {
        padding-top: 22px;
      }

      h1 {
        font-size: 36px;
      }

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

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

      .section {
        padding: 36px 0;
      }

      .price-tag {
        font-size: 34px;
      }
    }

/* roulang page: category1 */
:root{
      --bg:#0a0d14;
      --bg2:#0f172a;
      --panel:#111827;
      --panel2:#151d2d;
      --text:#e5eefc;
      --muted:#9fb0cc;
      --line:rgba(255,255,255,.08);
      --accent:#7c3aed;
      --accent2:#22d3ee;
      --accent3:#f97316;
      --radius:20px;
      --shadow:0 12px 36px rgba(2,6,23,.35);
      --shadow-strong:0 18px 60px rgba(2,6,23,.55);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: Inter, PingFang SC, Hiragino Sans GB, Microsoft YaHei, system-ui, -apple-system, sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(124,58,237,.22), transparent 30%),
        radial-gradient(circle at top right, rgba(34,211,238,.12), transparent 24%),
        linear-gradient(180deg, #0a0d14 0%, #0c1120 50%, #09101b 100%);
    }
    a{text-decoration:none;color:inherit}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    ::selection{background:rgba(124,58,237,.35);color:#fff}
    .site-container{width:min(1180px, calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky; top:0; z-index:50;
      backdrop-filter: blur(16px);
      background: rgba(10,13,20,.72);
      border-bottom:1px solid var(--line);
    }
    .nav-shell{display:flex;align-items:center;gap:18px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand-mark{
      width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--accent),var(--accent2));
      color:#fff;font-weight:800;box-shadow:var(--shadow-strong)
    }
    .brand-text{display:flex;flex-direction:column;min-width:0}
    .brand-title{font-size:18px;font-weight:800;line-height:1.1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .brand-sub{font-size:12px;color:var(--muted);margin-top:4px}
    .nav-tabs{display:flex;align-items:center;gap:10px;flex:1;overflow:auto;padding:4px 2px}
    .nav-link{
      display:inline-flex;align-items:center;justify-content:center;white-space:nowrap;
      padding:10px 14px;border:1px solid transparent;border-radius:999px;
      color:#cbd5e1;background:rgba(255,255,255,.03);transition:.2s ease;flex:0 0 auto
    }
    .nav-link:hover,.nav-link:focus{border-color:rgba(124,58,237,.4);background:rgba(124,58,237,.14);transform:translateY(-1px);outline:none}
    .nav-link.active{background:linear-gradient(135deg,rgba(124,58,237,.34),rgba(34,211,238,.18));border-color:rgba(124,58,237,.55);color:#fff;box-shadow:0 0 0 1px rgba(124,58,237,.15) inset}
    .nav-cta{
      flex:0 0 auto;padding:11px 16px;border-radius:999px;font-weight:700;
      background:linear-gradient(135deg,var(--accent),#5b21b6);color:#fff;box-shadow:var(--shadow);transition:.2s ease
    }
    .nav-cta:hover{transform:translateY(-1px);box-shadow:var(--shadow-strong)}
    .hero{
      padding:44px 0 24px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch
    }
    .hero-card,.panel-card,.feature-card,.case-card,.solution-card,.faq-item,.contact-card,.stat-card{
      border:1px solid var(--line);background:linear-gradient(180deg, rgba(17,24,39,.92), rgba(15,23,42,.88));
      border-radius:var(--radius);box-shadow:var(--shadow)
    }
    .hero-card{padding:30px;position:relative;overflow:hidden}
    .hero-card:before{
      content:"";position:absolute;inset:auto -10% -35% auto;width:320px;height:320px;border-radius:50%;
      background:radial-gradient(circle, rgba(124,58,237,.24), transparent 62%);filter:blur(8px);pointer-events:none
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;
      background:rgba(34,211,238,.08);border:1px solid rgba(34,211,238,.18);color:#bff7ff;font-size:13px;font-weight:600
    }
    .hero h1{margin:16px 0 14px;font-size:clamp(32px,4vw,56px);line-height:1.05;letter-spacing:-.02em}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:60ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:999px;padding:13px 18px;
      border:1px solid transparent;font-weight:700;transition:.2s ease;cursor:pointer
    }
    .btn-primary{background:linear-gradient(135deg,var(--accent),#5b21b6);color:#fff;box-shadow:var(--shadow)}
    .btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-strong)}
    .btn-secondary{background:rgba(255,255,255,.03);border-color:var(--line);color:#dbe7ff}
    .btn-secondary:hover{background:rgba(255,255,255,.07);border-color:rgba(124,58,237,.35)}
    .hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
    .tag{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);color:#c7d5ee;font-size:13px}
    .task-panel{padding:24px;background:linear-gradient(180deg, rgba(12,17,32,.95), rgba(17,24,39,.92));position:relative;overflow:hidden}
    .task-panel:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg, rgba(124,58,237,.12), transparent 40%, rgba(34,211,238,.08));pointer-events:none}
    .panel-title{font-size:18px;font-weight:800;margin:0 0 10px}
    .panel-text{margin:0 0 18px;color:var(--muted);line-height:1.7}
    .entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;position:relative;z-index:1}
    .entry-item{
      padding:15px;border-radius:18px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08)
    }
    .entry-item strong{display:block;font-size:15px;margin-bottom:6px}
    .entry-item span{display:block;color:var(--muted);font-size:13px;line-height:1.6}
    .section{padding:18px 0 8px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-title{font-size:24px;margin:0;font-weight:800}
    .section-desc{margin:0;color:var(--muted);line-height:1.7;max-width:62ch}
    .chip-row{display:flex;gap:10px;flex-wrap:wrap}
    .chip{padding:9px 12px;border-radius:999px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);color:#d6e2fb;font-size:13px}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .feature-card,.case-card,.solution-card,.stat-card,.contact-card,.faq-item{padding:20px}
    .card-icon{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;margin-bottom:14px;
      background:linear-gradient(135deg, rgba(124,58,237,.28), rgba(34,211,238,.16));
      border:1px solid rgba(124,58,237,.22);color:#fff;font-size:20px
    }
    .card-title{margin:0 0 8px;font-size:18px;font-weight:800}
    .card-text{margin:0;color:var(--muted);line-height:1.75;font-size:14px}
    .stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .stat-num{font-size:28px;font-weight:900;line-height:1;color:#fff}
    .stat-label{margin-top:10px;color:var(--muted);font-size:14px;line-height:1.6}
    .bar{height:10px;border-radius:999px;background:rgba(255,255,255,.06);overflow:hidden;margin-top:14px}
    .bar > span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--accent),var(--accent2))}
    .case-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:16px}
    .case-highlight{
      padding:22px;border-radius:var(--radius);background:linear-gradient(135deg, rgba(124,58,237,.14), rgba(34,211,238,.08));border:1px solid rgba(124,58,237,.22)
    }
    .list{display:grid;gap:12px;margin-top:14px}
    .list-item{display:flex;gap:12px;align-items:flex-start;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.06)}
    .list-item:last-child{border-bottom:none}
    .dot{width:10px;height:10px;border-radius:999px;background:linear-gradient(135deg,var(--accent2),var(--accent)) ;margin-top:7px;flex:none}
    .solution-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .step{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:12px;margin-bottom:12px;background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.18);font-weight:800;color:#cdfaff}
    .faq-grid{display:grid;gap:12px}
    .faq-item summary{list-style:none;cursor:pointer;font-weight:800;font-size:16px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item p{margin:12px 0 0;color:var(--muted);line-height:1.8}
    .contact-card{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:center}
    .contact-box{padding:18px;border-radius:18px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08)}
    .contact-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}
    .mini-form{display:grid;gap:12px}
    .mini-form input{
      width:100%;padding:14px 16px;border-radius:16px;border:1px solid rgba(255,255,255,.1);
      background:rgba(8,12,22,.85);color:#fff;outline:none;transition:.2s ease
    }
    .mini-form input:focus{border-color:rgba(34,211,238,.45);box-shadow:0 0 0 4px rgba(34,211,238,.08)}
    .site-footer{margin-top:26px;padding:30px 0 24px;border-top:1px solid var(--line);background:linear-gradient(180deg, rgba(7,10,18,.3), rgba(7,10,18,.58))}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px}
    .footer-title{margin:0 0 12px;font-size:18px;font-weight:800}
    .footer-text{margin:0;color:var(--muted);line-height:1.8}
    .footer-links{display:grid;gap:10px}
    .footer-link{color:#d7e4fd;transition:.2s ease}
    .footer-link:hover{color:#fff;text-decoration:underline}
    .footer-bottom{margin-top:18px;padding-top:18px;border-top:1px solid rgba(255,255,255,.06);display:flex;gap:10px;justify-content:space-between;flex-wrap:wrap}
    .copyright{margin:0;color:#8ea0bd;font-size:13px}
    .muted{color:var(--muted)}
    .hide-sm{display:inline}
    @media (max-width: 1024px){
      .hero-grid,.case-grid,.contact-card,.footer-grid{grid-template-columns:1fr}
      .grid-3,.solution-grid,.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .section-head{align-items:flex-start;flex-direction:column}
    }
    @media (max-width: 768px){
      .nav-shell{gap:12px;align-items:flex-start;flex-direction:column}
      .nav-tabs{width:100%}
      .nav-cta{width:100%;text-align:center}
      .hero{padding-top:28px}
      .hero-card,.task-panel,.feature-card,.case-card,.solution-card,.faq-item,.contact-card,.stat-card{padding:18px}
      .grid-3,.solution-grid,.stats-grid{grid-template-columns:1fr}
      .entry-grid{grid-template-columns:1fr}
      .hide-sm{display:none}
      .hero h1{font-size:clamp(30px,9vw,44px)}
    }
    @media (max-width: 520px){
      .site-container{width:min(100% - 20px, 1180px)}
      .brand-title{font-size:16px}
      .brand-sub{font-size:11px}
      .btn,.nav-link{padding-inline:14px}
      .hero-card{padding:20px}
      .card-title,.footer-title{font-size:17px}
    }

/* roulang page: category2 */
:root {
      --bg: #050816;
      --bg-2: #0a1024;
      --panel: rgba(10, 16, 36, .74);
      --panel-strong: rgba(8, 13, 30, .94);
      --line: rgba(148, 163, 184, .16);
      --text: #e5eefb;
      --muted: #9fb0c9;
      --cyan: #22d3ee;
      --violet: #8b5cf6;
      --amber: #f97316;
      --green: #34d399;
      --radius: 1.35rem;
      --radius-lg: 1.6rem;
      --shadow: 0 24px 80px rgba(2, 8, 23, .45);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--text);
      background:
        radial-gradient(circle at 10% 0%, rgba(34, 211, 238, .15), transparent 28%),
        radial-gradient(circle at 90% 10%, rgba(139, 92, 246, .18), transparent 24%),
        radial-gradient(circle at 50% 100%, rgba(249, 115, 22, .08), transparent 26%),
        linear-gradient(180deg, #050816 0%, #090d1a 52%, #060812 100%);
      font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      text-rendering: optimizeLegibility;
    }
    a { color: inherit; text-decoration: none; }
    img { max-width: 100%; display: block; }
    button, input, select, textarea { font: inherit; }
    ::selection { background: rgba(34, 211, 238, .35); color: #fff; }
    .site-container {
      width: min(1200px, calc(100% - 2rem));
      margin-inline: auto;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 60;
      background: rgba(5, 8, 22, .74);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--line);
    }
    .nav-shell {
      display: flex;
      align-items: center;
      gap: 1rem;
      padding: 1rem 0;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: .85rem;
      min-width: max-content;
    }
    .brand-mark {
      display: grid;
      place-items: center;
      width: 2.8rem;
      height: 2.8rem;
      border-radius: 999px;
      color: #fff;
      font-weight: 900;
      background: linear-gradient(135deg, #22d3ee 0%, #8b5cf6 52%, #f97316 100%);
      box-shadow: 0 12px 30px rgba(139, 92, 246, .35);
    }
    .brand-text {
      display: grid;
      gap: .1rem;
    }
    .brand-title {
      font-size: 1rem;
      line-height: 1.2;
      font-weight: 800;
      letter-spacing: .01em;
    }
    .brand-sub {
      font-size: .78rem;
      color: var(--muted);
    }
    .nav-tabs {
      display: flex;
      align-items: center;
      gap: .65rem;
      flex: 1;
      overflow-x: auto;
      scrollbar-width: none;
      padding-bottom: .1rem;
    }
    .nav-tabs::-webkit-scrollbar { display: none; }
    .nav-link {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: .72rem 1rem;
      border-radius: 999px;
      border: 1px solid transparent;
      color: var(--muted);
      background: rgba(255, 255, 255, .03);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, color .2s ease, background .2s ease;
      white-space: nowrap;
    }
    .nav-link:hover,
    .nav-link:focus-visible {
      color: #fff;
      border-color: rgba(255,255,255,.15);
      background: rgba(255,255,255,.05);
      transform: translateY(-1px);
      outline: none;
    }
    .nav-link.active {
      color: #fff;
      background: linear-gradient(135deg, rgba(34, 211, 238, .18), rgba(139, 92, 246, .26));
      border-color: rgba(255,255,255,.18);
      box-shadow: 0 12px 34px rgba(2, 8, 23, .28);
    }
    .nav-cta,
    .btn-primary,
    .btn-secondary,
    .submit-button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: .5rem;
      border-radius: 999px;
      font-weight: 700;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      cursor: pointer;
    }
    .nav-cta {
      padding: .84rem 1.25rem;
      color: #fff;
      background: linear-gradient(135deg, #22d3ee 0%, #8b5cf6 52%, #f97316 100%);
      box-shadow: 0 18px 36px rgba(139, 92, 246, .24);
      white-space: nowrap;
    }
    .nav-cta:hover,
    .btn-primary:hover,
    .submit-button:hover { transform: translateY(-2px); }
    .nav-cta:focus-visible,
    .btn-primary:focus-visible,
    .btn-secondary:focus-visible,
    .submit-button:focus-visible,
    .nav-link:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible {
      outline: 2px solid rgba(34, 211, 238, .55);
      outline-offset: 3px;
    }
    .btn-primary {
      padding: .95rem 1.3rem;
      color: #fff;
      background: linear-gradient(135deg, #22d3ee 0%, #8b5cf6 60%, #f97316 100%);
      box-shadow: 0 16px 36px rgba(34, 211, 238, .18);
    }
    .btn-secondary {
      padding: .95rem 1.3rem;
      color: #fff;
      border: 1px solid rgba(255,255,255,.14);
      background: rgba(255,255,255,.04);
      backdrop-filter: blur(14px);
    }
    .btn-secondary:hover {
      background: rgba(255,255,255,.07);
      border-color: rgba(255,255,255,.22);
    }
    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: .5rem;
      color: #dffbff;
      font-size: .9rem;
      font-weight: 700;
      letter-spacing: .08em;
      text-transform: uppercase;
    }
    .section-kicker::before {
      content: '';
      width: .6rem;
      height: .6rem;
      border-radius: 999px;
      background: linear-gradient(135deg, #22d3ee, #8b5cf6);
      box-shadow: 0 0 18px rgba(34, 211, 238, .45);
    }
    .section-title {
      margin: .5rem 0 0;
      font-size: clamp(1.6rem, 2.6vw, 2.4rem);
      line-height: 1.15;
      font-weight: 850;
      letter-spacing: -.03em;
    }
    .section-desc {
      margin: .85rem 0 0;
      color: var(--muted);
      max-width: 66ch;
    }
    .hero {
      position: relative;
      overflow: hidden;
      padding: 2rem 0 1rem;
    }
    .hero::before,
    .hero::after {
      content: '';
      position: absolute;
      inset: auto;
      border-radius: 999px;
      filter: blur(10px);
      pointer-events: none;
      opacity: .85;
    }
    .hero::before {
      width: 18rem;
      height: 18rem;
      left: -5rem;
      top: 3rem;
      background: radial-gradient(circle, rgba(34, 211, 238, .18), transparent 64%);
    }
    .hero::after {
      width: 24rem;
      height: 24rem;
      right: -9rem;
      top: 0;
      background: radial-gradient(circle, rgba(139, 92, 246, .16), transparent 63%);
    }
    .hero-title {
      margin: .75rem 0 0;
      font-size: clamp(2.2rem, 5vw, 4.7rem);
      line-height: .98;
      font-weight: 900;
      letter-spacing: -.05em;
      text-wrap: balance;
    }
    .hero-lead {
      margin: 1rem 0 0;
      max-width: 62ch;
      color: var(--muted);
      font-size: 1.03rem;
    }
    .hero-badges {
      display: flex;
      flex-wrap: wrap;
      gap: .6rem;
      margin-top: 1.2rem;
    }
    .chip,
    .badge {
      display: inline-flex;
      align-items: center;
      gap: .4rem;
      padding: .55rem .85rem;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.12);
      background: rgba(255,255,255,.04);
      color: #d9e7ff;
      font-size: .86rem;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: .8rem;
      margin-top: 1.5rem;
    }
    .panel {
      position: relative;
      border: 1px solid var(--line);
      background: linear-gradient(180deg, rgba(12, 18, 40, .84), rgba(8, 13, 30, .96));
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    .panel::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at top right, rgba(34, 211, 238, .14), transparent 38%),
                  radial-gradient(circle at bottom left, rgba(139, 92, 246, .13), transparent 40%);
      pointer-events: none;
    }
    .hero-task {
      padding: 1.2rem;
    }
    .task-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: .8rem;
      margin-bottom: 1rem;
    }
    .task-title {
      margin: 0;
      font-size: 1.03rem;
      font-weight: 800;
    }
    .task-note {
      margin: .2rem 0 0;
      color: var(--muted);
      font-size: .9rem;
    }
    .progress-wrap {
      margin-top: .8rem;
      padding: 1rem;
      border-radius: 1.1rem;
      background: rgba(255,255,255,.04);
      border: 1px solid rgba(255,255,255,.08);
    }
    .progress-track {
      height: .65rem;
      border-radius: 999px;
      background: rgba(255,255,255,.08);
      overflow: hidden;
    }
    .progress-fill {
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, #22d3ee 0%, #8b5cf6 55%, #f97316 100%);
      box-shadow: 0 0 18px rgba(34, 211, 238, .35);
    }
    .panel-grid {
      display: grid;
      gap: .8rem;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      margin-top: 1rem;
    }
    .mini-card {
      padding: .9rem;
      border-radius: 1rem;
      background: rgba(255,255,255,.04);
      border: 1px solid rgba(255,255,255,.08);
    }
    .mini-label {
      font-size: .82rem;
      color: var(--muted);
    }
    .mini-value {
      margin-top: .2rem;
      font-size: 1.05rem;
      font-weight: 800;
    }
    .feature-card,
    .story-card,
    .step-card,
    .faq-item,
    .stat-card,
    .contact-card {
      border: 1px solid rgba(255,255,255,.09);
      background: rgba(10, 16, 36, .76);
      backdrop-filter: blur(14px);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
    }
    .feature-card,
    .story-card,
    .step-card,
    .stat-card {
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }
    .feature-card:hover,
    .story-card:hover,
    .step-card:hover,
    .stat-card:hover {
      transform: translateY(-4px);
      border-color: rgba(255,255,255,.18);
      box-shadow: 0 24px 70px rgba(2,8,23,.38);
    }
    .icon-badge {
      display: grid;
      place-items: center;
      width: 2.85rem;
      height: 2.85rem;
      border-radius: 1rem;
      color: #fff;
      background: linear-gradient(135deg, rgba(34, 211, 238, .85), rgba(139, 92, 246, .85));
      box-shadow: 0 18px 32px rgba(139, 92, 246, .22);
      font-weight: 900;
    }
    .card-title {
      margin: .9rem 0 .35rem;
      font-size: 1.05rem;
      font-weight: 800;
    }
    .card-text {
      margin: 0;
      color: var(--muted);
      font-size: .95rem;
    }
    .metric-number {
      font-size: clamp(2rem, 4vw, 2.8rem);
      line-height: 1;
      font-weight: 900;
      letter-spacing: -.04em;
    }
    .metric-label {
      margin-top: .55rem;
      color: var(--muted);
    }
    .meter {
      height: .7rem;
      border-radius: 999px;
      background: rgba(255,255,255,.08);
      overflow: hidden;
      margin-top: .75rem;
    }
    .meter > span {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, #22d3ee, #8b5cf6, #f97316);
    }
    .story-grid {
      display: grid;
      gap: 1rem;
      grid-template-columns: repeat(4, minmax(0, 1fr));
    }
    .story-card {
      padding: 1.15rem;
      min-height: 100%;
    }
    .story-tags {
      display: flex;
      flex-wrap: wrap;
      gap: .45rem;
      margin-top: .9rem;
    }
    .story-tag {
      padding: .35rem .65rem;
      border-radius: 999px;
      background: rgba(255,255,255,.05);
      color: #cfe3ff;
      border: 1px solid rgba(255,255,255,.08);
      font-size: .78rem;
    }
    .roadmap {
      display: grid;
      gap: 1rem;
      grid-template-columns: 1.2fr .8fr;
    }
    .timeline {
      display: grid;
      gap: .9rem;
    }
    .timeline-item {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: .9rem;
      padding: 1rem 1.05rem;
      border-radius: 1.1rem;
      border: 1px solid rgba(255,255,255,.08);
      background: rgba(255,255,255,.035);
    }
    .timeline-index {
      display: grid;
      place-items: center;
      width: 2.3rem;
      height: 2.3rem;
      border-radius: 999px;
      color: #fff;
      font-weight: 800;
      background: linear-gradient(135deg, #22d3ee, #8b5cf6);
    }
    .timeline-title {
      margin: 0;
      font-weight: 800;
    }
    .timeline-text {
      margin: .25rem 0 0;
      color: var(--muted);
      font-size: .95rem;
    }
    .compare-box {
      padding: 1.2rem;
    }
    .compare-row {
      display: grid;
      gap: .8rem;
      padding: .95rem 0;
      border-top: 1px solid rgba(255,255,255,.08);
    }
    .compare-row:first-of-type { border-top: 0; padding-top: 0; }
    .compare-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: .8rem;
    }
    .compare-name {
      font-weight: 800;
    }
    .compare-note {
      color: var(--muted);
      font-size: .92rem;
    }
    .faq-wrap {
      display: grid;
      gap: .8rem;
    }
    .faq-item {
      overflow: hidden;
    }
    .faq-item summary {
      list-style: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      padding: 1rem 1.1rem;
      font-weight: 800;
    }
    .faq-item summary::-webkit-details-marker { display: none; }
    .faq-item summary::after {
      content: '+';
      color: #dbeafe;
      font-size: 1.2rem;
      line-height: 1;
      transition: transform .2s ease;
    }
    .faq-item[open] summary::after { content: '−'; }
    .faq-content {
      padding: 0 1.1rem 1.1rem;
      color: var(--muted);
    }
    .contact-card {
      padding: 1.2rem;
    }
    .field {
      display: grid;
      gap: .45rem;
    }
    .field label {
      font-size: .92rem;
      color: #d7e6ff;
      font-weight: 700;
    }
    .field input,
    .field select,
    .field textarea {
      width: 100%;
      border: 1px solid rgba(255,255,255,.1);
      background: rgba(255,255,255,.04);
      color: #fff;
      border-radius: 1rem;
      padding: .95rem 1rem;
      box-shadow: inset 0 1px 0 rgba(255,255,255,.03);
      transition: border-color .2s ease, background .2s ease, transform .2s ease;
    }
    .field input::placeholder,
    .field textarea::placeholder { color: rgba(159, 176, 201, .8); }
    .field input:hover,
    .field select:hover,
    .field textarea:hover {
      border-color: rgba(255,255,255,.18);
      background: rgba(255,255,255,.06);
    }
    .submit-button {
      padding: 1rem 1.3rem;
      color: #fff;
      border: 0;
      background: linear-gradient(135deg, #22d3ee 0%, #8b5cf6 52%, #f97316 100%);
      box-shadow: 0 18px 36px rgba(139, 92, 246, .24);
    }
    .status-box {
      min-height: 3.4rem;
      padding: .95rem 1rem;
      border-radius: 1rem;
      border: 1px solid rgba(255,255,255,.1);
      background: rgba(255,255,255,.04);
      color: #dce9ff;
    }
    .site-footer {
      margin-top: 2rem;
      border-top: 1px solid var(--line);
      background: linear-gradient(180deg, rgba(5, 8, 22, .76), rgba(4, 7, 18, .98));
    }
    .footer-grid {
      display: grid;
      gap: 1.2rem;
      grid-template-columns: 1.2fr 1fr 1fr;
      padding: 2rem 0 1.2rem;
    }
    .footer-title {
      margin: 0 0 .75rem;
      font-size: 1rem;
      font-weight: 800;
    }
    .footer-text {
      margin: 0;
      color: var(--muted);
    }
    .footer-links {
      display: grid;
      gap: .55rem;
    }
    .footer-link {
      width: fit-content;
      color: #dce9ff;
      transition: color .2s ease, transform .2s ease;
    }
    .footer-link:hover { color: #fff; transform: translateX(2px); }
    .footer-bottom {
      display: flex;
      flex-wrap: wrap;
      gap: .5rem 1rem;
      justify-content: space-between;
      padding: 1rem 0 1.5rem;
      border-top: 1px solid rgba(255,255,255,.08);
      color: var(--muted);
      font-size: .92rem;
    }
    .copyright { margin: 0; }
    .glow-line {
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(34, 211, 238, .55), rgba(139, 92, 246, .55), transparent);
    }
    @media (max-width: 1024px) {
      .nav-shell { flex-wrap: wrap; }
      .nav-tabs { order: 3; width: 100%; }
      .story-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
      .roadmap { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .footer-grid > :first-child { grid-column: 1 / -1; }
    }
    @media (max-width: 768px) {
      .site-container { width: min(100% - 1.1rem, 100%); }
      .hero { padding-top: 1rem; }
      .hero-title { font-size: clamp(2rem, 10vw, 3.2rem); }
      .panel-grid { grid-template-columns: 1fr; }
      .story-grid { grid-template-columns: 1fr; }
      .feature-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; }
    }
    @media (max-width: 520px) {
      .nav-shell { gap: .75rem; }
      .brand-title { font-size: .96rem; }
      .brand-sub { font-size: .74rem; }
      .nav-link,
      .nav-cta,
      .btn-primary,
      .btn-secondary,
      .submit-button { width: 100%; }
      .hero-actions { flex-direction: column; }
      .hero-badges { gap: .45rem; }
      .chip, .badge { width: 100%; justify-content: center; }
      .contact-grid { grid-template-columns: 1fr; }
    }