/* roulang page: index */
:root {
      --primary: #0284c7;
      --primary-dark: #0369a1;
      --primary-light: #e0f2fe;
      --secondary: #0f172a;
      --accent: #f59e0b;
      --bg-light: #f8fafc;
      --bg-white: #ffffff;
      --border-color: #e2e8f0;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
      --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
      --shadow-lg: 0 10px 30px rgba(2,132,199,0.15);
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

    * { box-sizing: border-box; }
    body {
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-white);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary); }
    ul { list-style: none; margin: 0; padding: 0; }
    img { max-width: 100%; height: auto; }

    /* Header & Nav */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .nav-container {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--secondary);
      letter-spacing: -0.5px;
    }
    .brand-logo i {
      color: var(--primary);
      font-size: 1.7rem;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-link-item {
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
      position: relative;
      padding: 6px 0;
    }
    .nav-link-item:hover, .nav-link-item.active {
      color: var(--primary);
    }
    .nav-link-item.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }
    .nav-action-btn {
      background: var(--primary);
      color: #fff !important;
      padding: 10px 22px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.95rem;
      box-shadow: var(--shadow-sm);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .nav-action-btn:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
      box-shadow: var(--shadow-lg);
    }

    /* Layout Containers */
    .app-section {
      padding: 80px 0;
      position: relative;
    }
    .app-section-alt {
      background-color: var(--bg-light);
    }
    .app-section-dark {
      background-color: var(--secondary);
      color: #fff;
    }
    .section-wrap {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }
    .section-head {
      margin-bottom: 50px;
    }
    .section-head.text-center {
      text-align: center;
    }
    .section-badge {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 14px;
      border-radius: 50px;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: inherit;
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .app-section-dark .section-title {
      color: #fff;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 780px;
      line-height: 1.8;
      margin: 0 auto;
    }
    .app-section-dark .section-desc {
      color: #94a3b8;
    }

    /* Hero: 斜切 + 全宽视频官网遮罩 + 播放舞台 */
    .hero-video-section {
      position: relative;
      background: linear-gradient(135deg, #0f172a 0%, #0369a1 100%);
      color: #fff;
      padding: 100px 0 140px;
      overflow: hidden;
      clip-path: polygon(0 0, 100% 0, 100% 94%, 0 100%);
    }
    .hero-video-bg {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.15;
      pointer-events: none;
    }
    .hero-inner {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }
    .hero-h1 {
      font-size: 2.85rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 24px;
      color: #ffffff;
      letter-spacing: -1px;
    }
    .hero-summary {
      font-size: 1.15rem;
      color: #cbd5e1;
      line-height: 1.85;
      margin-bottom: 36px;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-btn-group {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 45px;
    }
    .btn-solid-hero {
      background: #ffffff;
      color: var(--secondary) !important;
      padding: 15px 36px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 1.05rem;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    }
    .btn-solid-hero:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }
    .btn-video-trigger {
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.3);
      color: #ffffff !important;
      padding: 14px 30px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 1.05rem;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      backdrop-filter: blur(8px);
    }
    .btn-video-trigger:hover {
      background: rgba(255, 255, 255, 0.22);
      border-color: #fff;
    }
    .hero-stage-mock {
      margin-top: 30px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-lg);
      padding: 24px;
      backdrop-filter: blur(12px);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }
    .stage-browser-bar {
      display: flex;
      align-items: center;
      gap: 12px;
      background: rgba(15, 23, 42, 0.6);
      padding: 10px 18px;
      border-radius: var(--radius-md);
      margin-bottom: 18px;
    }
    .stage-dots {
      display: flex;
      gap: 6px;
    }
    .stage-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #ef4444;
    }
    .stage-dot:nth-child(2) { background: #f59e0b; }
    .stage-dot:nth-child(3) { background: #10b981; }
    .stage-address {
      flex: 1;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 6px;
      padding: 6px 14px;
      font-size: 0.85rem;
      color: #94a3b8;
      text-align: left;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .stage-viewport {
      background: #0b1120;
      border-radius: var(--radius-md);
      padding: 30px 20px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .stage-kpi {
      padding: 16px;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.06);
      border-radius: var(--radius-sm);
      text-align: left;
    }
    .stage-kpi-val {
      font-size: 1.8rem;
      font-weight: 800;
      color: #38bdf8;
      line-height: 1.2;
    }
    .stage-kpi-lbl {
      font-size: 0.82rem;
      color: #94a3b8;
      margin-top: 4px;
    }

    /* Cards & Grids */
    .app-card {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      transition: var(--transition);
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .app-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }
    .card-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      margin-bottom: 20px;
    }
    .app-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--secondary);
    }
    .app-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin: 0;
    }

    /* Pain vs Solution (对比) */
    .compare-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
    .compare-box {
      border-radius: var(--radius-md);
      padding: 36px;
    }
    .compare-bad {
      background: #fff5f5;
      border: 1px solid #fed7d7;
    }
    .compare-good {
      background: #f0fdf4;
      border: 1px solid #bbf7d0;
    }
    .compare-title {
      font-size: 1.3rem;
      font-weight: 800;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .compare-bad .compare-title { color: #dc2626; }
    .compare-good .compare-title { color: #16a34a; }
    .compare-list li {
      margin-bottom: 16px;
      font-size: 0.96rem;
      display: flex;
      align-items: flex-start;
      gap: 12px;
      line-height: 1.6;
    }
    .compare-bad li { color: #7f1d1d; }
    .compare-good li { color: #14532d; }

    /* Steps Flow */
    .steps-chain {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-item {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      position: relative;
    }
    .step-number {
      font-size: 2.2rem;
      font-weight: 900;
      color: #e2e8f0;
      line-height: 1;
      margin-bottom: 12px;
    }
    .step-item h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--secondary);
      margin-bottom: 10px;
    }
    .step-item p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin: 0;
    }

    /* Target Users / 适用人群 */
    .user-tags-container {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .user-tag-card {
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 28px;
    }
    .user-tag-card h4 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--primary-dark);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .user-tag-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* Table-like Latest Updates */
    .data-table-wrap {
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .data-row {
      display: grid;
      grid-template-columns: 140px 1fr 140px 120px;
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
      align-items: center;
      font-size: 0.95rem;
    }
    .data-row:last-child { border-bottom: none; }
    .data-row.header-row {
      background: var(--bg-light);
      font-weight: 700;
      color: var(--secondary);
    }
    .data-tag {
      display: inline-block;
      padding: 2px 10px;
      border-radius: 4px;
      font-size: 0.78rem;
      font-weight: 600;
      background: #e2e8f0;
      color: #475569;
    }
    .data-tag.tag-stable { background: #dcfce7; color: #15803d; }
    .data-tag.tag-speed { background: #e0f2fe; color: #0369a1; }

    /* Summary Bar */
    .summary-box {
      background: linear-gradient(to right, #0f172a, #1e293b);
      color: #fff;
      border-radius: var(--radius-lg);
      padding: 40px;
    }
    .summary-list {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 20px;
    }
    .summary-item {
      border-left: 2px solid var(--primary);
      padding-left: 14px;
    }
    .summary-item h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: #38bdf8;
      margin-bottom: 6px;
    }
    .summary-item p {
      font-size: 0.82rem;
      color: #94a3b8;
      line-height: 1.5;
      margin: 0;
    }

    /* Assurance badges */
    .assurance-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }
    .assurance-item {
      padding: 24px 16px;
      background: #fff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
    }
    .assurance-item i {
      font-size: 2rem;
      color: var(--primary);
      margin-bottom: 12px;
      display: inline-block;
    }
    .assurance-item h5 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 6px;
      color: var(--secondary);
    }
    .assurance-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin: 0;
    }

    /* Final CTA */
    .cta-banner {
      background: linear-gradient(135deg, var(--primary) 0%, #1d4ed8 100%);
      border-radius: var(--radius-lg);
      padding: 60px 40px;
      text-align: center;
      color: #fff;
      box-shadow: var(--shadow-lg);
    }
    .cta-banner h2 {
      font-size: 2.2rem;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .cta-banner p {
      font-size: 1.05rem;
      color: #e0f2fe;
      max-width: 640px;
      margin: 0 auto 30px;
    }
    .cta-btn {
      background: #fff;
      color: var(--primary-dark) !important;
      font-size: 1.05rem;
      font-weight: 700;
      padding: 14px 38px;
      border-radius: 50px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: 0 4px 14px rgba(0,0,0,0.15);
    }
    .cta-btn:hover {
      background: #f8fafc;
      transform: scale(1.03);
    }

    /* Footer */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      font-size: 0.92rem;
      border-top: 1px solid #1e293b;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand {
      color: #fff;
      font-size: 1.3rem;
      font-weight: 800;
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 16px;
    }
    .footer-col h4 {
      color: #f1f5f9;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #94a3b8;
    }
    .footer-links a:hover {
      color: #fff;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .steps-chain, .summary-list { grid-template-columns: repeat(2, 1fr); }
      .assurance-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .hero-h1 { font-size: 2.1rem; }
      .hero-video-section { clip-path: none; padding: 70px 0 80px; }
      .compare-grid, .user-tags-container { grid-template-columns: 1fr; }
      .stage-viewport { grid-template-columns: 1fr; }
      .data-row { grid-template-columns: 1fr auto; gap: 8px; }
      .data-row span:nth-child(3) { display: none; }
      .nav-links { display: none; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    }

/* roulang page: category1 */
:root {
      --primary: #0284c7;
      --primary-dark: #0369a1;
      --primary-light: #e0f2fe;
      --secondary: #0f172a;
      --accent: #f59e0b;
      --bg-light: #f8fafc;
      --bg-white: #ffffff;
      --border-color: #e2e8f0;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
      --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
      --shadow-lg: 0 10px 30px rgba(2,132,199,0.15);
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    body {
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-white);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    a { color: inherit; text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--primary); }
    img { max-width: 100%; height: auto; }
    
    /* Header & Nav */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .nav-container {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--secondary);
      letter-spacing: -0.5px;
    }
    .brand-logo i {
      color: var(--primary);
      font-size: 1.7rem;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-link-item {
      font-size: 1rem;
      font-weight: 600;
      color: var(--text-main);
      position: relative;
      padding: 6px 0;
    }
    .nav-link-item:hover, .nav-link-item.active {
      color: var(--primary);
    }
    .nav-link-item.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }
    .nav-action-btn {
      background: var(--primary);
      color: #fff !important;
      padding: 10px 22px;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.95rem;
      box-shadow: var(--shadow-sm);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .nav-action-btn:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
      box-shadow: var(--shadow-lg);
    }

    /* Layout Containers */
    .app-section {
      padding: 70px 0;
      position: relative;
    }
    .app-section-alt {
      background-color: var(--bg-light);
    }
    .app-section-dark {
      background-color: var(--secondary);
      color: #fff;
    }
    .section-wrap {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }
    .section-head {
      margin-bottom: 40px;
    }
    .section-head.text-center {
      text-align: center;
    }
    .section-badge {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 14px;
      border-radius: 50px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }
    .section-badge.badge-dark {
      background: rgba(255, 255, 255, 0.15);
      color: #38bdf8;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .app-section-dark .section-title {
      color: #fff;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 820px;
      line-height: 1.8;
      margin: 0 auto;
    }
    .app-section-dark .section-desc {
      color: #94a3b8;
    }

    /* Hero Unit */
    .page-hero-spec {
      background: linear-gradient(135deg, #0f172a 0%, #0369a1 100%);
      color: #ffffff;
      padding: 70px 0 80px;
      position: relative;
      overflow: hidden;
    }
    .hero-spec-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }
    .hero-spec-h1 {
      font-size: 2.7rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 20px;
      color: #fff;
    }
    .hero-spec-desc {
      font-size: 1.1rem;
      color: #cbd5e1;
      line-height: 1.8;
      margin-bottom: 30px;
    }
    .hero-spec-points {
      list-style: none;
      padding: 0;
      margin: 0 0 32px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }
    .hero-spec-points li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.95rem;
      color: #f1f5f9;
      font-weight: 500;
    }
    .hero-spec-points li i {
      color: #38bdf8;
    }
    .hero-metric-card {
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: var(--radius-md);
      padding: 24px;
      backdrop-filter: blur(10px);
    }
    .metric-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .metric-row:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .metric-title {
      color: #94a3b8;
      font-size: 0.92rem;
    }
    .metric-val {
      font-size: 1.15rem;
      font-weight: 700;
      color: #38bdf8;
    }

    /* Cards & Grids */
    .grid-3-col {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-2-col {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
      align-items: center;
    }
    .grid-4-col {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .card-spec {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .card-spec:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #cbd5e1;
    }
    .card-icon-wrap {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
    }
    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--secondary);
    }
    .card-p {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin: 0;
    }

    /* Spec Data Table */
    .spec-table-wrap {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .spec-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      margin: 0;
    }
    .spec-table th {
      background: #f1f5f9;
      padding: 16px 20px;
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--secondary);
      border-bottom: 1px solid var(--border-color);
    }
    .spec-table td {
      padding: 16px 20px;
      font-size: 0.92rem;
      color: var(--text-main);
      border-bottom: 1px solid var(--border-color);
      vertical-align: top;
    }
    .spec-table tr:last-child td {
      border-bottom: none;
    }
    .spec-table tr:hover td {
      background: #f8fafc;
    }
    .badge-tag {
      display: inline-block;
      padding: 3px 8px;
      border-radius: 4px;
      font-size: 0.8rem;
      font-weight: 600;
      background: #e2e8f0;
      color: #334155;
    }
    .badge-tag.primary {
      background: var(--primary-light);
      color: var(--primary-dark);
    }

    /* Process Flow */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .step-num {
      width: 32px;
      height: 32px;
      background: var(--primary);
      color: #fff;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.9rem;
      margin-bottom: 14px;
    }
    .step-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--secondary);
    }
    .step-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* Dark Code/Terminal Box */
    .arch-code-box {
      background: #090d16;
      border: 1px solid #1e293b;
      border-radius: var(--radius-md);
      padding: 24px;
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
      color: #e2e8f0;
      font-size: 0.88rem;
      line-height: 1.7;
    }
    .code-line {
      display: flex;
      margin-bottom: 8px;
    }
    .code-prefix {
      color: #64748b;
      margin-right: 12px;
      user-select: none;
    }
    .code-keyword { color: #38bdf8; }
    .code-func { color: #f59e0b; }
    .code-str { color: #4ade80; }

    /* CTA Section */
    .cta-banner-box {
      background: linear-gradient(135deg, #0369a1 0%, #0f172a 100%);
      border-radius: var(--radius-lg);
      padding: 60px 40px;
      color: #ffffff;
      text-align: center;
      box-shadow: var(--shadow-lg);
    }
    .cta-banner-title {
      font-size: 2.2rem;
      font-weight: 800;
      margin-bottom: 16px;
      color: #ffffff;
    }
    .cta-banner-p {
      font-size: 1.05rem;
      color: #cbd5e1;
      max-width: 680px;
      margin: 0 auto 30px;
    }

    /* Footer */
    .site-footer {
      background-color: var(--secondary);
      color: #94a3b8;
      padding: 70px 0 24px;
      border-top: 1px solid #1e293b;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 16px;
    }
    .footer-col h4 {
      font-size: 1rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a {
      color: #94a3b8;
      font-size: 0.9rem;
    }
    .footer-links a:hover {
      color: #38bdf8;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
      flex-wrap: wrap;
      gap: 12px;
    }

    @media (max-width: 1024px) {
      .hero-spec-grid { grid-template-columns: 1fr; }
      .grid-3-col { grid-template-columns: 1fr 1fr; }
      .grid-4-col { grid-template-columns: 1fr 1fr; }
      .flow-steps { grid-template-columns: 1fr 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hero-spec-h1 { font-size: 2.1rem; }
      .section-title { font-size: 1.7rem; }
      .grid-3-col, .grid-2-col, .flow-steps, .grid-4-col { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .spec-table th, .spec-table td { padding: 12px 10px; font-size: 0.85rem; }
    }