/* roulang page: index */
:root {
      --primary: #1d4ed8;
      --primary-hover: #1e40af;
      --primary-light: #eff6ff;
      --secondary: #0ea5e9;
      --accent: #6366f1;
      --dark-slate: #0f172a;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --text-light: #94a3b8;
      --bg-white: #ffffff;
      --bg-alt: #f8fafc;
      --bg-dark: #0b1329;
      --border-color: #e2e8f0;
      --border-light: #f1f5f9;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
      --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-lg: 0 12px 32px -4px rgba(15, 23, 42, 0.1);
      --container-width: 1240px;
      --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: var(--font-family);
      color: var(--text-main);
      background-color: var(--bg-white);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

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

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    .section-py {
      padding-top: 88px;
      padding-bottom: 88px;
    }

    .section-alt {
      background-color: var(--bg-alt);
    }

    .section-dark {
      background-color: var(--bg-dark);
      color: #ffffff;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      background-color: var(--primary-light);
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 600;
      border-radius: 9999px;
      border: 1px solid rgba(29, 78, 216, 0.15);
      margin-bottom: 16px;
    }

    .badge-dark {
      background: rgba(255, 255, 255, 0.1);
      color: #38bdf8;
      border-color: rgba(56, 189, 248, 0.25);
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 56px;
    }

    .section-title {
      font-size: 2.25rem;
      font-weight: 700;
      color: var(--dark-slate);
      letter-spacing: -0.02em;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .section-dark .section-title {
      color: #ffffff;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .section-dark .section-desc {
      color: var(--text-light);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 13px 28px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      transition: all 0.25s ease;
      cursor: pointer;
      text-align: center;
      border: 1px solid transparent;
      min-height: 48px;
    }

    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(29, 78, 216, 0.3);
    }

    .btn-primary:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 6px 20px rgba(29, 78, 216, 0.4);
      transform: translateY(-2px);
    }

    .btn-secondary {
      background-color: #ffffff;
      color: var(--text-main);
      border-color: var(--border-color);
    }

    .btn-secondary:hover {
      background-color: var(--bg-alt);
      border-color: #cbd5e1;
      transform: translateY(-2px);
    }

    .btn-light {
      background-color: rgba(255, 255, 255, 0.15);
      color: #ffffff;
      backdrop-filter: blur(8px);
    }

    .btn-light:hover {
      background-color: rgba(255, 255, 255, 0.25);
    }

    /* Header & Nav */
    .top-bar {
      background-color: #f1f5f9;
      font-size: 0.825rem;
      color: var(--text-muted);
      border-bottom: 1px solid var(--border-color);
      padding: 6px 0;
    }

    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .top-bar-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .top-bar-status {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: #10b981;
      margin-right: 4px;
    }

    .main-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 74px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: -0.03em;
    }

    .brand-logo-icon {
      width: 36px;
      height: 36px;
      border-radius: 8px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      font-size: 1.1rem;
      font-weight: bold;
    }

    .nav-menu {
      display: flex;
      list-style: none;
      gap: 28px;
      align-items: center;
    }

    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 0;
      position: relative;
    }

    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0%;
      height: 2px;
      background-color: var(--primary);
      transition: width 0.25s ease;
    }

    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.6rem;
      cursor: pointer;
      color: var(--dark-slate);
    }

    /* Hero Section */
    .hero-section {
      position: relative;
      padding: 100px 0 110px;
      overflow: hidden;
      background: radial-gradient(circle at 85% 20%, rgba(224, 242, 254, 0.6) 0%, rgba(255, 255, 255, 1) 60%);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 56px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 3.1rem;
      font-weight: 800;
      color: var(--dark-slate);
      line-height: 1.2;
      letter-spacing: -0.03em;
      margin-bottom: 20px;
    }

    .hero-content h1 span {
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 1.12rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 32px;
    }

    .hero-action-group {
      display: flex;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }

    .hero-pill-list {
      display: flex;
      gap: 20px;
      padding-top: 24px;
      border-top: 1px solid var(--border-color);
      flex-wrap: wrap;
    }

    .hero-pill-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    .hero-pill-item svg {
      width: 18px;
      height: 18px;
      color: var(--primary);
    }

    .hero-visual {
      position: relative;
    }

    .hero-img-wrapper {
      position: relative;
      border-radius: var(--radius-xl);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(226, 232, 240, 0.8);
      background: #ffffff;
    }

    .hero-img-wrapper img {
      width: 100%;
      height: 480px;
      object-fit: cover;
    }

    .floating-stat-badge {
      position: absolute;
      bottom: 24px;
      left: 24px;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      padding: 16px 22px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .floating-stat-badge .stat-val {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
    }

    .floating-stat-badge .stat-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.3;
    }

    /* 2. Overview */
    .overview-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }

    .overview-img-card {
      border-radius: var(--radius-xl);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }

    .overview-specs {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin-top: 32px;
    }

    .spec-item {
      padding: 18px;
      background-color: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }

    .spec-item .num {
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .spec-item .label {
      font-size: 0.875rem;
      color: var(--text-muted);
    }

    /* 3. Advantages 6-grid */
    .adv-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .adv-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .adv-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: #cbd5e1;
    }

    .adv-icon-box {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 22px;
      font-size: 1.5rem;
    }

    .adv-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 12px;
    }

    .adv-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 4. Products 3 Big Cards */
    .prod-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }

    .prod-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }

    .prod-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-6px);
      border-color: #93c5fd;
    }

    .prod-card-thumb {
      height: 210px;
      overflow: hidden;
    }

    .prod-card-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

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

    .prod-card-body {
      padding: 32px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .prod-card-body h3 {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 12px;
    }

    .prod-card-body p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.65;
    }

    .prod-feature-list {
      list-style: none;
      margin-bottom: 30px;
      flex-grow: 1;
    }

    .prod-feature-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.9rem;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .prod-feature-list li::before {
      content: '✓';
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 18px;
      height: 18px;
      background: #dbeafe;
      color: var(--primary);
      border-radius: 50%;
      font-size: 0.75rem;
      font-weight: bold;
    }

    /* 5. Workflow 4-steps */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .flow-step-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      position: relative;
    }

    .flow-step-num {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
      margin-bottom: 20px;
    }

    .flow-step-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 10px;
    }

    .flow-step-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 6. Concept Dark Comparison */
    .compare-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      margin-top: 48px;
    }

    .compare-box {
      border-radius: var(--radius-xl);
      padding: 40px;
    }

    .compare-box.traditional {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .compare-box.ai-future {
      background: linear-gradient(145deg, rgba(29, 78, 216, 0.25) 0%, rgba(14, 165, 233, 0.15) 100%);
      border: 1px solid rgba(56, 189, 248, 0.3);
    }

    .compare-box h3 {
      font-size: 1.4rem;
      font-weight: 700;
      margin-bottom: 24px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .compare-metric-row {
      display: flex;
      justify-content: space-between;
      padding: 16px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      font-size: 0.95rem;
    }

    .compare-metric-row:last-child {
      border-bottom: none;
    }

    .compare-metric-row .metric-val {
      font-weight: 700;
      color: #38bdf8;
    }

    /* 7. Cases */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .case-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .case-card-body {
      padding: 28px;
    }

    .case-tag {
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 8px;
      display: inline-block;
    }

    .case-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--dark-slate);
    }

    .case-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
    }

    .case-result-badge {
      display: flex;
      align-items: center;
      gap: 8px;
      background: #f0fdf4;
      color: #15803d;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.875rem;
    }

    /* 8. Stories */
    .story-layout {
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 48px;
      align-items: center;
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 48px;
      box-shadow: var(--shadow-sm);
    }

    .story-role {
      font-size: 0.9rem;
      color: var(--secondary);
      font-weight: 600;
      margin-bottom: 8px;
    }

    .story-title {
      font-size: 1.7rem;
      font-weight: 800;
      color: var(--dark-slate);
      margin-bottom: 18px;
      line-height: 1.35;
    }

    .story-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 24px;
    }

    .story-img-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
    }

    .story-img-box img {
      width: 100%;
      height: 340px;
      object-fit: cover;
    }

    /* 9. Metrics Band */
    .metrics-band {
      background: linear-gradient(135deg, var(--dark-slate) 0%, #1e293b 100%);
      color: #ffffff;
      padding: 64px 0;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }

    .metric-band-item .num {
      font-size: 2.75rem;
      font-weight: 800;
      color: #38bdf8;
      line-height: 1.1;
      margin-bottom: 8px;
    }

    .metric-band-item .label {
      font-size: 0.95rem;
      color: var(--text-light);
    }

    /* 10. Testimonials */
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .testi-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }

    .testi-stars {
      color: #f59e0b;
      font-size: 1.1rem;
      margin-bottom: 16px;
    }

    .testi-quote {
      font-size: 0.95rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 24px;
      font-style: normal;
    }

    .testi-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #e2e8f0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }

    .user-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--dark-slate);
    }

    .user-info p {
      font-size: 0.825rem;
      color: var(--text-muted);
    }

    /* 11. News & Insights */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .news-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }      box-shadow: var(--shadow-sm);
    }

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

    .news-card-thumb {
      height: 180px;
      overflow: hidden;
    }

    .news-card-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .news-card:hover .news-card-thumb img {
      transform: scale(1.04);
    }

    .news-card-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .news-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
      font-size: 0.8rem;
    }

    .news-category {
      color: var(--primary);
      font-weight: 600;
      background: var(--primary-light);
      padding: 2px 10px;
      border-radius: 9999px;
    }

    .news-date {
      color: var(--text-light);
    }

    .news-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .news-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .news-link-btn {
      color: var(--primary);
      font-weight: 600;
      font-size: 0.875rem;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 12. Ecosystem Logos */
    .partner-grid {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 20px;
      align-items: center;
    }

    .partner-box {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 14px;
      text-align: center;
      font-weight: 700;
      color: #64748b;
      font-size: 0.95rem;
      letter-spacing: 0.02em;
      transition: all 0.25s ease;
      box-shadow: var(--shadow-sm);
    }

    .partner-box:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }

    /* 13. FAQ Accordion */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      overflow: hidden;
      transition: border-color 0.25s ease;
    }

    .faq-item.active {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      padding: 20px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--dark-slate);
      user-select: none;
    }

    .faq-icon {
      font-size: 1.2rem;
      transition: transform 0.25s ease;
      color: var(--text-muted);
    }

    .faq-item.active .faq-icon {
      transform: rotate(180deg);
      color: var(--primary);
    }

    .faq-answer {
      display: none;
      padding: 0 24px 22px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid transparent;
    }

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

    /* 14. Guarantee Strip */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .guarantee-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px 22px;
      text-align: center;
      transition: all 0.25s ease;
    }

    .guarantee-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }

    .guarantee-icon {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #eff6ff;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 1.3rem;
      margin-bottom: 16px;
    }

    .guarantee-card h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 8px;
    }

    .guarantee-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 15. Contact / CTA Conversion */
    .contact-card-box {
      background: linear-gradient(135deg, #1e3a8a 0%, #172554 100%);
      border-radius: var(--radius-xl);
      padding: 56px 48px;
      color: #ffffff;
      box-shadow: var(--shadow-lg);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }

    .contact-info-col h2 {
      font-size: 2.2rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 18px;
    }

    .contact-info-col p {
      color: #cbd5e1;
      font-size: 1.025rem;
      line-height: 1.7;
      margin-bottom: 32px;
    }

    .contact-channels {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .channel-item {
      display: flex;
      align-items: center;
      gap: 14px;
      font-size: 0.95rem;
      color: #e2e8f0;
    }

    .channel-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
    }

    .contact-form-col {
      background: #ffffff;
      padding: 36px;
      border-radius: var(--radius-lg);
      color: var(--text-main);
      box-shadow: var(--shadow-md);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--dark-slate);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.925rem;
      color: var(--text-main);
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.12);
    }

    /* Footer */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding-top: 72px;
      padding-bottom: 36px;
      border-top: 1px solid #1e293b;
      font-size: 0.9rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 56px;
    }

    .footer-brand h3 {
      color: #ffffff;
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 16px;
    }

    .footer-brand p {
      line-height: 1.7;
      color: #94a3b8;
      margin-bottom: 20px;
    }

    .footer-col h4 {
      color: #ffffff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

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

    .footer-bottom {
      padding-top: 32px;
      border-top: 1px solid #1e293b;
      text-align: center;
      font-size: 0.825rem;
      color: #64748b;
      line-height: 1.8;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hero-grid, .overview-grid, .story-layout, .contact-card-box {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .adv-grid, .prod-grid, .case-grid, .news-grid, .testi-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps, .metrics-grid, .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .partner-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--border-color);
        gap: 16px;
      }
      .nav-menu.show {
        display: flex;
      }
      .hero-content h1 {
        font-size: 2.3rem;
      }
      .adv-grid, .prod-grid, .case-grid, .news-grid, .testi-grid, .flow-steps, .compare-container, .metrics-grid, .guarantee-grid {
        grid-template-columns: 1fr;
      }
      .partner-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .contact-card-box {
        padding: 32px 20px;
      }
      .story-layout {
        padding: 28px 20px;
      }
    }