/* roulang page: index */
:root {
      --primary: #10B981;
      --primary-dark: #059669;
      --primary-light: #D1FAE5;
      --accent: #F59E0B;
      --accent-hover: #D97706;
      --navy-900: #0B1120;
      --navy-800: #0F172A;
      --navy-700: #1E293B;
      --slate-600: #475569;
      --slate-500: #64748B;
      --slate-400: #94A3B8;
      --slate-200: #E2E8F0;
      --slate-100: #F1F5F9;
      --bg-light: #F8FAFC;
      --white: #FFFFFF;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-md: 0 10px 25px -5px rgba(0,0,0,0.05), 0 8px 10px -6px rgba(0,0,0,0.03);
      --shadow-lg: 0 20px 30px -10px rgba(15,23,42,0.12);
      --shadow-glow: 0 0 20px rgba(16, 185, 129, 0.35);
      --font-stack: system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
    }

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

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

    body {
      font-family: var(--font-stack);
      color: #1E293B;
      background-color: var(--white);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

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

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部微信息条 */
    .top-bar {
      background-color: var(--navy-900);
      color: var(--slate-400);
      font-size: 13px;
      border-bottom: 1px solid rgba(255,255,255,0.08);
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .status-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--primary);
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.4; }
    }
    .top-contacts {
      display: flex;
      gap: 20px;
    }
    .top-contacts span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 主导航 */
    .main-nav {
      position: sticky;
      top: 0;
      z-index: 100;
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--slate-200);
      height: 72px;
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 100%;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--navy-900);
    }
    .logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary) 0%, #047857 100%);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--white);
      font-weight: 800;
      font-size: 18px;
      box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
    }
    .brand-sub {
      font-size: 11px;
      font-weight: 500;
      color: var(--primary);
      display: block;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }
    .nav-links {
      display: flex;
      list-style: none;
      align-items: center;
      gap: 28px;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--slate-600);
      position: relative;
      padding: 6px 0;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary);
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: var(--primary);
      border-radius: 2px;
    }
    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background-color: var(--navy-900);
      color: var(--white);
      font-size: 14px;
      font-weight: 600;
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      cursor: pointer;
    }
    .nav-cta:hover {
      background-color: var(--primary);
      box-shadow: var(--shadow-glow);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--navy-900);
      cursor: pointer;
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      font-weight: 600;
      padding: 12px 28px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.25s ease;
      gap: 8px;
    }
    .btn-primary {
      background-color: var(--primary);
      color: var(--white);
      border: 1px solid var(--primary);
      box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
    }
    .btn-outline {
      background-color: transparent;
      color: var(--white);
      border: 1px solid rgba(255, 255, 255, 0.3);
    }
    .btn-outline:hover {
      background-color: rgba(255, 255, 255, 0.1);
      border-color: var(--white);
      transform: translateY(-2px);
    }
    .btn-dark {
      background-color: var(--navy-900);
      color: var(--white);
      border: 1px solid var(--navy-900);
    }
    .btn-dark:hover {
      background-color: var(--navy-800);
      transform: translateY(-2px);
    }

    /* 板块通用 */
    section {
      padding: 84px 0;
      position: relative;
    }
    .section-light {
      background-color: var(--white);
    }
    .section-slate {
      background-color: var(--bg-light);
      border-top: 1px solid var(--slate-200);
      border-bottom: 1px solid var(--slate-200);
    }
    .section-dark {
      background-color: var(--navy-900);
      color: var(--white);
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 56px auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      background-color: var(--primary-light);
      padding: 4px 12px;
      border-radius: 99px;
      margin-bottom: 14px;
    }
    .section-dark .section-tag {
      background-color: rgba(16, 185, 129, 0.15);
      color: #34D399;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      line-height: 1.35;
      margin-bottom: 16px;
      color: var(--navy-900);
    }
    .section-dark .section-title {
      color: var(--white);
    }
    .section-subtitle {
      font-size: 16px;
      color: var(--slate-600);
      line-height: 1.7;
    }
    .section-dark .section-subtitle {
      color: var(--slate-400);
    }

    /* 1. Hero 板块（新品发布倒计时环 + 卖点要点 + 预约购买） */
    .hero-section {
      background: linear-gradient(180deg, #060D1A 0%, #0F172A 100%);
      color: var(--white);
      padding: 70px 0 90px 0;
      position: relative;
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: url('/assets/images/024b2a3b341ed41c.jpg');
      background-size: cover;
      background-position: center;
      opacity: 0.18;
      pointer-events: none;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero-badge-live {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(245, 158, 11, 0.15);
      border: 1px solid rgba(245, 158, 11, 0.4);
      color: #FBBF24;
      font-size: 13px;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 99px;
      margin-bottom: 20px;
    }
    .hero-badge-live span.pulse {
      width: 8px;
      height: 8px;
      background: #F59E0B;
      border-radius: 50%;
      box-shadow: 0 0 8px #F59E0B;
    }
    .hero-title {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      background: linear-gradient(90deg, #34D399 0%, #6EE7B7 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 16px;
      line-height: 1.75;
      color: var(--slate-400);
      margin-bottom: 32px;
      max-width: 600px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }
    .hero-points {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 1px solid rgba(255,255,255,0.12);
      padding-top: 24px;
    }
    .hero-point-item strong {
      display: block;
      font-size: 18px;
      color: var(--white);
      margin-bottom: 4px;
    }
    .hero-point-item span {
      font-size: 12px;
      color: var(--slate-400);
    }

    /* 倒计时与预售卡片 */
    .hero-card-panel {
      background: rgba(15, 23, 42, 0.85);
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-lg);
      backdrop-filter: blur(16px);
      text-align: center;
    }
    .release-tag {
      font-size: 13px;
      color: #34D399;
      font-weight: 600;
      letter-spacing: 1px;
      text-transform: uppercase;
      margin-bottom: 8px;
    }
    .countdown-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--white);
      margin-bottom: 24px;
    }
    .countdown-ring-box {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 28px;
    }
    .ring-unit {
      width: 76px;
      height: 76px;
      background: rgba(255, 255, 255, 0.05);
      border: 2px solid rgba(16, 185, 129, 0.4);
      border-radius: 50%;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }
    .ring-num {
      font-size: 22px;
      font-weight: 800;
      color: #34D399;
      line-height: 1;
    }
    .ring-label {
      font-size: 11px;
      color: var(--slate-400);
      margin-top: 4px;
    }
    .hero-form-box {
      text-align: left;
      background: rgba(255, 255, 255, 0.03);
      padding: 18px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255,255,255,0.08);
    }
    .hero-form-box label {
      display: block;
      font-size: 13px;
      color: var(--slate-400);
      margin-bottom: 6px;
    }
    .hero-input {
      width: 100%;
      padding: 12px 14px;
      background: rgba(0, 0, 0, 0.4);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-sm);
      color: var(--white);
      font-size: 14px;
      outline: none;
      margin-bottom: 12px;
    }
    .hero-input:focus {
      border-color: var(--primary);
    }

    /* 2. 卖点三连 (Tri-Feature Highlight) */
    .selling-trio-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .trio-card {
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-md);
      padding: 36px 28px;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    .trio-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: var(--slate-200);
      transition: background 0.3s ease;
    }
    .trio-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(16, 185, 129, 0.4);
    }
    .trio-card:hover::before {
      background: var(--primary);
    }
    .trio-icon {
      width: 52px;
      height: 52px;
      background: var(--primary-light);
      color: var(--primary-dark);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .trio-title {
      font-size: 20px;
      font-weight: 700;
      color: var(--navy-900);
      margin-bottom: 12px;
    }
    .trio-desc {
      font-size: 14px;
      color: var(--slate-600);
      line-height: 1.65;
    }

    /* 3. 软件入口矩阵 (Software Entry Matrix) */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .matrix-card {
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .matrix-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .matrix-tag {
      font-size: 12px;
      font-weight: 600;
      color: var(--primary-dark);
      background: var(--primary-light);
      padding: 2px 8px;
      border-radius: 4px;
      align-self: flex-start;
      margin-bottom: 14px;
    }
    .matrix-name {
      font-size: 18px;
      font-weight: 700;
      color: var(--navy-900);
      margin-bottom: 10px;
    }
    .matrix-desc {
      font-size: 14px;
      color: var(--slate-600);
      line-height: 1.6;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .matrix-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .matrix-link:hover {
      color: var(--primary-dark);
      gap: 9px;
    }

    /* 4. 最新发布 (Latest Release / Version Updates) */
    .release-showcase {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }
    .release-img-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--slate-200);
    }
    .release-img-wrap img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .release-img-wrap:hover img {
      transform: scale(1.03);
    }
    .release-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      color: var(--white);
      background: var(--accent);
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 14px;
    }
    .release-title {
      font-size: 26px;
      font-weight: 700;
      color: var(--navy-900);
      margin-bottom: 16px;
    }
    .release-desc {
      font-size: 15px;
      color: var(--slate-600);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .release-features {
      list-style: none;
      margin-bottom: 28px;
    }
    .release-features li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: var(--navy-800);
      margin-bottom: 10px;
      font-weight: 500;
    }
    .release-features li::before {
      content: '✓';
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 18px;
      height: 18px;
      background: var(--primary-light);
      color: var(--primary-dark);
      border-radius: 50%;
      font-size: 11px;
      font-weight: 800;
    }

    /* 5. 热门专题矩阵 (Hot Topics & Categories) */
    .topics-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .topic-card {
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.3s ease;
    }
    .topic-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .topic-img {
      width: 100%;
      height: 180px;
      object-fit: cover;
    }
    .topic-content {
      padding: 24px;
    }
    .topic-label {
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 8px;
      display: block;
    }
    .topic-name {
      font-size: 18px;
      font-weight: 700;
      color: var(--navy-900);
      margin-bottom: 12px;
    }
    .topic-desc {
      font-size: 14px;
      color: var(--slate-600);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    /* 6. 高算力赛事中台 (Dark Tech Showcase) */
    .architecture-box {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .arch-code-box {
      background: #020617;
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius-md);
      padding: 24px;
      font-family: 'Courier New', Courier, monospace;
      color: #94A3B8;
      font-size: 13px;
      line-height: 1.6;
      box-shadow: inset 0 2px 10px rgba(0,0,0,0.5);
    }
    .arch-code-box .code-highlight {
      color: #34D399;
    }
    .arch-code-box .code-comment {
      color: #64748B;
    }
    .arch-points-list {
      list-style: none;
    }
    .arch-item {
      display: flex;
      gap: 16px;
      margin-bottom: 24px;
    }
    .arch-num {
      width: 36px;
      height: 36px;
      background: rgba(16, 185, 129, 0.2);
      border: 1px solid var(--primary);
      border-radius: 8px;
      color: #34D399;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .arch-detail h4 {
      font-size: 17px;
      font-weight: 600;
      color: var(--white);
      margin-bottom: 6px;
    }
    .arch-detail p {
      font-size: 14px;
      color: var(--slate-400);
      line-height: 1.6;
    }

    /* 7. 行业技术动态与数据资讯 (News & Insights) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .news-thumb {
      height: 190px;
      overflow: hidden;
    }
    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .news-card:hover .news-thumb img {
      transform: scale(1.05);
    }
    .news-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-meta {
      font-size: 12px;
      color: var(--slate-500);
      margin-bottom: 10px;
      display: flex;
      justify-content: space-between;
    }
    .news-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--navy-900);
      line-height: 1.4;
      margin-bottom: 12px;
    }
    .news-summary {
      font-size: 14px;
      color: var(--slate-600);
      line-height: 1.6;
      flex-grow: 1;
      margin-bottom: 18px;
    }
    .news-more {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
    }

    /* 8. 深度应用场景与解决方案 (Use Cases) */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .case-card {
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .case-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .case-img-box {
      height: 200px;
      overflow: hidden;
    }
    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-body {
      padding: 24px;
    }
    .case-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 8px;
      display: inline-block;
    }
    .case-title {
      font-size: 19px;
      font-weight: 700;
      color: var(--navy-900);
      margin-bottom: 10px;
    }
    .case-desc {
      font-size: 14px;
      color: var(--slate-600);
      line-height: 1.65;
    }

    /* 9. 全网关键运行指标条 (Metric Counter Strip) */
    .metrics-strip {
      background: linear-gradient(90deg, #064E3B 0%, #0F172A 100%);
      color: var(--white);
      padding: 48px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-item {
      padding: 10px;
    }
    .metric-value {
      font-size: 38px;
      font-weight: 800;
      color: #34D399;
      line-height: 1.2;
      margin-bottom: 6px;
    }
    .metric-title {
      font-size: 15px;
      font-weight: 600;
      color: var(--white);
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 12px;
      color: var(--slate-400);
    }

    /* 10. 用户口碑气泡与评价 (Testimonials Wall) */
    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-stars {
      color: #F59E0B;
      font-size: 16px;
      margin-bottom: 14px;
    }
    .testi-quote {
      font-size: 14px;
      color: var(--slate-600);
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: normal;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--slate-100);
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      background: var(--navy-800);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
    }
    .author-name {
      font-size: 14px;
      font-weight: 700;
      color: var(--navy-900);
    }
    .author-role {
      font-size: 12px;
      color: var(--slate-500);
    }

    /* 11. 常见技术解答 (FAQ Accordion) */
    .faq-wrapper {
      max-width: 820px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--white);
      border: 1px solid var(--slate-200);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      transition: all 0.2s ease;
    }
    .faq-item:hover {
      border-color: var(--primary);
    }
    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 24px;
      background: none;
      border: none;
      font-size: 16px;
      font-weight: 600;
      color: var(--navy-900);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-icon {
      font-size: 18px;
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    .faq-answer {
      padding: 0 24px 20px 24px;
      font-size: 14px;
      color: var(--slate-600);
      line-height: 1.7;
      display: block;
    }

    /* 12. 开通转化与行动召唤 (Final CTA) */
    .final-cta-box {
      background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      color: var(--white);
      box-shadow: var(--shadow-lg);
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .final-cta-text h3 {
      font-size: 32px;
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .final-cta-text p {
      font-size: 15px;
      color: var(--slate-400);
      line-height: 1.7;
    }
    .lead-form {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 28px;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      color: var(--slate-300);
      margin-bottom: 6px;
      font-weight: 500;
    }
    .form-group input,
    .form-group select {
      width: 100%;
      padding: 12px 14px;
      background: rgba(15, 23, 42, 0.7);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-sm);
      color: var(--white);
      font-size: 14px;
      outline: none;
    }
    .form-group input:focus,
    .form-group select:focus {
      border-color: var(--primary);
    }
    .form-submit-btn {
      width: 100%;
      padding: 14px;
      background: var(--primary);
      border: none;
      border-radius: var(--radius-sm);
      color: var(--white);
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4);
      transition: all 0.2s ease;
    }
    .form-submit-btn:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
    }

    /* 全局页脚 */
    .site-footer {
      background: var(--navy-900);
      color: var(--slate-400);
      padding-top: 64px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      font-size: 14px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      font-size: 20px;
      color: var(--white);
      font-weight: 700;
      margin-bottom: 14px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 16px;
      font-size: 13px;
    }
    .footer-col h5 {
      font-size: 16px;
      color: var(--white);
      font-weight: 600;
      margin-bottom: 18px;
      position: relative;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: var(--slate-400);
    }
    .footer-links a:hover {
      color: var(--primary);
      padding-left: 4px;
    }
    .footer-contact li {
      margin-bottom: 10px;
      line-height: 1.6;
      font-size: 13px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 24px 0;
      text-align: center;
      font-size: 13px;
      color: var(--slate-500);
    }
    .footer-bottom a {
      color: var(--slate-400);
    }
    .footer-bottom a:hover {
      color: var(--primary);
    }

    /* 响应式样式适配 */
    @media (max-width: 1024px) {
      .hero-grid,
      .architecture-box,
      .release-showcase,
      .final-cta-box {
        grid-template-columns: 1fr;
      }
      .selling-trio-grid,
      .topics-grid,
      .news-grid,
      .cases-grid,
      .testi-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .matrix-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar-inner {
        justify-content: center;
      }
      .top-contacts {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--slate-200);
        box-shadow: var(--shadow-md);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-cta {
        display: none;
      }
      .hero-title {
        font-size: 30px;
      }
      .hero-points {
        grid-template-columns: 1fr;
      }
      .selling-trio-grid,
      .matrix-grid,
      .topics-grid,
      .news-grid,
      .cases-grid,
      .testi-grid,
      .metrics-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .countdown-ring-box {
        gap: 8px;
      }
      .ring-unit {
        width: 64px;
        height: 64px;
      }
      .final-cta-box {
        padding: 32px 20px;
      }
      section {
        padding: 56px 0;
      }
    }