/* roulang page: index */
:root {
      --primary: #0A8F82;
      --primary-hover: #08756a;
      --primary-light: rgba(10, 143, 130, 0.08);
      --secondary: #1665D8;
      --gradient-brand: linear-gradient(135deg, #0A8F82 0%, #1665D8 100%);
      --accent-purple: #6366F1;
      --accent-amber: #F59E0B;
      --bg-page: #F8FAFC;
      --bg-card: #FFFFFF;
      --bg-dark: #0B132B;
      --text-main: #0F172A;
      --text-regular: #334155;
      --text-muted: #64748B;
      --border-light: rgba(226, 232, 240, 0.9);
      --border-dark: rgba(255, 255, 255, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 22px;
      --radius-pill: 9999px;
      --shadow-sm: 0 2px 4px rgba(0,0,0,0.03);
      --shadow-card: 0 10px 30px -5px rgba(10, 143, 130, 0.06), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
      --shadow-hover: 0 20px 35px -5px rgba(10, 143, 130, 0.15), 0 8px 12px -3px rgba(0, 0, 0, 0.05);
      --container-max: 1240px;
    }

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

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

    body {
      font-family: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-regular);
      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;
    }

    ul, ol {
      list-style: none;
    }

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

    /* Top Bar */
    .top-bar {
      background: #064E48;
      color: #E2E8F0;
      font-size: 0.8125rem;
      padding: 7px 0;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-tags {
      display: flex;
      gap: 16px;
      align-items: center;
    }
    .pulse-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.3);
      animation: pulse 2s infinite;
      margin-right: 6px;
    }
    @keyframes pulse {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.6); }
      70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
    }

    /* Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      font-size: 1.35rem;
      color: var(--text-main);
      letter-spacing: -0.3px;
    }
    .brand-logo-icon {
      width: 42px;
      height: 42px;
      background: var(--gradient-brand);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.3rem;
      font-weight: 800;
      box-shadow: 0 4px 12px rgba(10, 143, 130, 0.25);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--text-regular);
      position: relative;
      padding: 6px 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 11px 24px;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius-pill);
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      white-space: nowrap;
      text-align: center;
    }
    .btn-gradient {
      background: var(--gradient-brand);
      color: #fff;
      box-shadow: 0 6px 18px rgba(10, 143, 130, 0.22);
    }
    .btn-gradient:hover {
      box-shadow: 0 10px 24px rgba(10, 143, 130, 0.35);
      transform: translateY(-2px);
    }
    .btn-outline {
      border-color: var(--border-light);
      background: #FFFFFF;
      color: var(--text-regular);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }
    .btn-light-teal {
      background: var(--primary-light);
      color: var(--primary);
    }
    .btn-light-teal:hover {
      background: rgba(10, 143, 130, 0.16);
    }

    /* Badges */
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 5px 12px;
      border-radius: var(--radius-pill);
      font-size: 0.775rem;
      font-weight: 600;
      letter-spacing: 0.2px;
      background: var(--primary-light);
      color: var(--primary);
      border: 1px solid rgba(10, 143, 130, 0.18);
    }
    .badge-amber {
      background: rgba(245, 158, 11, 0.1);
      color: #D97706;
      border-color: rgba(245, 158, 11, 0.2);
    }
    .badge-purple {
      background: rgba(99, 102, 241, 0.1);
      color: #4F46E5;
      border-color: rgba(99, 102, 241, 0.2);
    }

    /* Sections Common */
    .section {
      padding: 85px 0;
      position: relative;
    }
    .section-alt {
      background-color: #FFFFFF;
      border-top: 1px solid rgba(226, 232, 240, 0.6);
      border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    }
    .section-dark {
      background-color: var(--bg-dark);
      color: #F8FAFC;
    }
    .section-header {
      margin-bottom: 50px;
    }
    .section-header.center {
      text-align: center;
      max-width: 800px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-header h2 {
      font-size: 2.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-top: 12px;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-dark .section-header h2 {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* Bento Hero (#section-hero) */
    .hero-section {
      padding: 60px 0 80px 0;
      background: radial-gradient(circle at 10% 20%, rgba(10, 143, 130, 0.05) 0%, transparent 40%),
                  radial-gradient(circle at 90% 80%, rgba(22, 101, 216, 0.05) 0%, transparent 40%);
    }
    .bento-hero-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr;
      grid-template-rows: auto auto;
      gap: 24px;
    }
    .bento-hero-main {
      grid-column: 1 / 2;
      grid-row: 1 / 2;
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 50px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
      justify-content: center;
      position: relative;
      overflow: hidden;
    }
    .bento-hero-main::before {
      content: '';
      position: absolute;
      top: 0;
      right: 0;
      width: 280px;
      height: 280px;
      background: radial-gradient(circle, rgba(10, 143, 130, 0.08) 0%, transparent 70%);
      pointer-events: none;
    }
    .hero-h1 {
      font-size: 2.85rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      letter-spacing: -0.8px;
      margin: 18px 0 20px 0;
    }
    .hero-h1 span {
      background: var(--gradient-brand);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.08rem;
      color: var(--text-regular);
      line-height: 1.75;
      margin-bottom: 30px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      align-items: center;
      flex-wrap: wrap;
    }
    .bento-side-card1 {
      grid-column: 2 / 3;
      grid-row: 1 / 2;
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 34px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      overflow: hidden;
    }
    .side-bg-overlay {
      position: absolute;
      top: 0;
      right: 0;
      bottom: 0;
      left: 0;
      opacity: 0.12;
      object-fit: cover;
      width: 100%;
      height: 100%;
      pointer-events: none;
    }
    .bento-side-card2 {
      grid-column: 2 / 3;
      grid-row: 2 / 3;
      background: linear-gradient(145deg, #0A8F82 0%, #065F56 100%);
      color: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-card);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .bento-cta-strip {
      grid-column: 1 / 2;
      grid-row: 2 / 3;
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 24px 34px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
    }
    .strip-stat-item {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .strip-num {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--primary);
      font-feature-settings: "tnum";
    }
    .strip-label {
      font-size: 0.825rem;
      color: var(--text-muted);
      line-height: 1.3;
    }

    /* Section 2: 入口矩阵 (#section-matrix) */
    .grid-matrix-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }
    .matrix-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 28px 22px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .matrix-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }
    .matrix-icon-wrap {
      width: 50px;
      height: 50px;
      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;
    }
    .matrix-card h3 {
      font-size: 1.2rem;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .matrix-card p {
      font-size: 0.925rem;
      color: var(--text-muted);
      margin-bottom: 20px;
      line-height: 1.6;
      flex-grow: 1;
    }

    /* Section 3: 最新动态大盘 (#section-feed) */
    .feed-layout {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 30px;
    }
    .feed-list-box {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      padding: 32px;
      box-shadow: var(--shadow-card);
    }
    .feed-row {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 20px;
      padding: 20px 0;
      border-bottom: 1px solid #EDF2F7;
    }
    .feed-row:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .feed-row:first-child {
      padding-top: 0;
    }
    .feed-time {
      font-size: 0.8125rem;
      color: var(--text-muted);
      white-space: nowrap;
      margin-top: 3px;
    }
    .feed-title-link {
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      display: block;
      margin-bottom: 6px;
    }
    .feed-title-link:hover {
      color: var(--primary);
    }
    .feed-snippet {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.55;
    }
    .feed-side-panel {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .side-widget {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      padding: 28px;
      box-shadow: var(--shadow-card);
    }

    /* Section 4: 动态指标看板 (#section-metrics) */
    .metrics-container-card {
      background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      padding: 44px;
      box-shadow: var(--shadow-card);
    }
    .metrics-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 28px;
    }
    .metric-item {
      padding: 24px;
      border-radius: var(--radius-md);
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .metric-header-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
    }
    .metric-val {
      font-size: 2.6rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -1px;
      line-height: 1.1;
      margin-bottom: 8px;
    }
    .metric-val span {
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--primary);
      margin-left: 4px;
    }
    .metric-sub {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* Section 5: 精选分类与服务矩阵 (#section-products) */
    .products-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .product-box {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .product-box:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(10, 143, 130, 0.4);
    }
    .product-box.featured {
      border: 2px solid var(--primary);
      position: relative;
    }
    .featured-tag {
      position: absolute;
      top: 14px;
      right: 18px;
      background: var(--gradient-brand);
      color: #FFFFFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: var(--radius-pill);
    }
    .product-head {
      padding: 34px 30px 24px;
      border-bottom: 1px solid #F1F5F9;
    }
    .product-head h3 {
      font-size: 1.35rem;
      color: var(--text-main);
      margin: 12px 0 10px;
    }
    .product-head p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
    }
    .product-body {
      padding: 30px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .feature-check-list {
      margin-bottom: 28px;
    }
    .feature-check-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.9rem;
      color: var(--text-regular);
      margin-bottom: 12px;
    }
    .check-icon {
      color: var(--primary);
      font-weight: 800;
    }

    /* Section 6: 深色深潜技术解析 (#section-philosophy) */
    .philosophy-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .philosophy-info h2 {
      font-size: 2.2rem;
      font-weight: 700;
      color: #FFFFFF;
      margin: 16px 0 20px;
      letter-spacing: -0.5px;
    }
    .philosophy-info p {
      font-size: 1.025rem;
      color: #94A3B8;
      line-height: 1.8;
      margin-bottom: 30px;
    }
    .spec-points-list {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .spec-point-item {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      background: rgba(255, 255, 255, 0.04);
      padding: 18px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-dark);
    }
    .spec-point-icon {
      font-size: 1.3rem;
      color: #10B981;
    }
    .spec-point-content h4 {
      color: #FFFFFF;
      font-size: 1.05rem;
      margin-bottom: 4px;
    }
    .spec-point-content p {
      font-size: 0.885rem;
      color: #94A3B8;
      margin-bottom: 0;
      line-height: 1.5;
    }
    .philosophy-visual-card {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 30px;
      position: relative;
    }
    .philosophy-visual-card img {
      border-radius: var(--radius-md);
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    /* Section 7: 前后对比板块 (#section-comparison) */
    .comparison-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
    .comparison-col {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 40px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
    }
    .comparison-col.highlight {
      border-color: var(--primary);
      background: linear-gradient(180deg, rgba(10, 143, 130, 0.02) 0%, #FFFFFF 100%);
      box-shadow: var(--shadow-hover);
    }
    .col-badge-head {
      margin-bottom: 24px;
    }
    .comparison-item-row {
      display: flex;
      align-items: flex-start;
      gap: 16px;
      padding: 18px 0;
      border-bottom: 1px solid #F1F5F9;
    }
    .comparison-item-row:last-child {
      border-bottom: none;
    }
    .compare-icon {
      font-size: 1.2rem;
      margin-top: 2px;
    }
    .compare-bad {
      color: #EF4444;
    }
    .compare-good {
      color: var(--primary);
    }
    .compare-text h4 {
      font-size: 1.025rem;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .compare-text p {
      font-size: 0.885rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* Section 8: 里程碑与演进时间线 (#section-milestones) */
    .milestone-timeline {
      position: relative;
      max-width: 960px;
      margin: 0 auto;
    }
    .milestone-timeline::before {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background: #E2E8F0;
      transform: translateX(-50%);
    }
    .milestone-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 40px;
      position: relative;
    }
    .milestone-row:nth-child(even) {
      flex-direction: row-reverse;
    }
    .milestone-box {
      width: 44%;
      background: #FFFFFF;
      padding: 26px 30px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
    }
    .milestone-node {
      width: 20px;
      height: 20px;
      background: var(--primary);
      border: 4px solid #FFFFFF;
      border-radius: 50%;
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      box-shadow: 0 0 0 3px rgba(10, 143, 130, 0.2);
    }
    .milestone-date {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .milestone-box h3 {
      font-size: 1.15rem;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .milestone-box p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Section 9: 落地场景矩阵 (#section-stories) */
    .stories-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .story-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
    }
    .story-img-wrap {
      height: 190px;
      width: 100%;
      overflow: hidden;
      position: relative;
    }
    .story-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .story-card:hover .story-img-wrap img {
      transform: scale(1.05);
    }
    .story-content {
      padding: 28px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .story-tag {
      font-size: 0.775rem;
      color: var(--primary);
      font-weight: 700;
      margin-bottom: 10px;
    }
    .story-content h3 {
      font-size: 1.2rem;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .story-content p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    /* Section 10: 资讯动态模块 (#section-news) */
    .news-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      padding: 28px;
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .news-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 16px;
    }
    .news-card h3 {
      font-size: 1.18rem;
      line-height: 1.45;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .news-card p {
      font-size: 0.9125rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 22px;
      flex-grow: 1;
    }

    /* Section 11: 版本更新与技术迭代 (#section-updates) */
    .updates-card-box {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      padding: 40px;
      box-shadow: var(--shadow-card);
    }
    .update-record {
      display: grid;
      grid-template-columns: 180px 1fr;
      gap: 30px;
      padding-bottom: 28px;
      margin-bottom: 28px;
      border-bottom: 1px solid #EDF2F7;
    }
    .update-record:last-child {
      border-bottom: none;
      margin-bottom: 0;
      padding-bottom: 0;
    }
    .update-tag-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .update-version {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .update-date {
      font-size: 0.85rem;
      color: var(--text-muted);
    }
    .update-details h4 {
      font-size: 1.1rem;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .update-details ul {
      list-style: disc;
      padding-left: 20px;
    }
    .update-details li {
      font-size: 0.925rem;
      color: var(--text-regular);
      margin-bottom: 6px;
      line-height: 1.55;
    }

    /* Section 12: 多端同步与数据生态 (#section-sync) */
    .sync-banner {
      background: linear-gradient(135deg, #0A8F82 0%, #1665D8 100%);
      border-radius: var(--radius-lg);
      color: #FFFFFF;
      padding: 50px 60px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 40px;
      position: relative;
      overflow: hidden;
    }
    .sync-banner::after {
      content: '';
      position: absolute;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 70%);
      top: -100px;
      right: -100px;
      pointer-events: none;
    }
    .sync-content {
      max-width: 680px;
    }
    .sync-content h3 {
      font-size: 2.1rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .sync-content p {
      font-size: 1.05rem;
      opacity: 0.92;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .sync-badges {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
    }
    .sync-pill {
      background: rgba(255, 255, 255, 0.18);
      backdrop-filter: blur(8px);
      padding: 8px 18px;
      border-radius: var(--radius-pill);
      font-size: 0.875rem;
      font-weight: 600;
      border: 1px solid rgba(255, 255, 255, 0.25);
    }

    /* Section 13: 快速解答与常见问题 (#section-faq) */
    .faq-accordion {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      transition: all 0.3s ease;
    }
    .faq-item[open] {
      border-color: var(--primary);
      box-shadow: var(--shadow-card);
    }
    .faq-summary {
      padding: 22px 28px;
      font-size: 1.075rem;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      list-style: none;
      user-select: none;
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-summary::after {
      content: '+';
      font-size: 1.4rem;
      font-weight: 400;
      color: var(--primary);
      transition: transform 0.3s ease;
    }
    .faq-item[open] .faq-summary::after {
      content: '−';
      transform: rotate(180deg);
    }
    .faq-body {
      padding: 0 28px 24px 28px;
      color: var(--text-regular);
      font-size: 0.95rem;
      line-height: 1.7;
      border-top: 1px solid #F8FAFC;
    }

    /* Contact Form Section (#section-contact) */
    .contact-card-wrap {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-hover);
      padding: 50px;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 50px;
    }
    .contact-info-col h3 {
      font-size: 2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }
    .contact-info-col p {
      font-size: 1.025rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 30px;
    }
    .contact-spec-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
      font-size: 0.95rem;
      color: var(--text-regular);
    }
    .contact-spec-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      font-size: 0.885rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 13px 18px;
      border-radius: var(--radius-sm);
      border: 1px solid #CBD5E1;
      font-size: 0.95rem;
      color: var(--text-main);
      background: #FFFFFF;
      transition: all 0.25s ease;
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      outline: none;
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(10, 143, 130, 0.15);
    }
    .form-textarea {
      min-height: 110px;
      resize: vertical;
    }
    .form-submit-btn {
      width: 100%;
      padding: 15px;
      font-size: 1.025rem;
    }

    /* Footer */
    .site-footer {
      background: #0B132B;
      color: #94A3B8;
      padding: 70px 0 35px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.9rem;
    }
    .footer-grid-4 {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand h4 {
      color: #FFFFFF;
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .footer-col h5 {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 20px;
    }
    .footer-col ul li {
      margin-bottom: 12px;
    }
    .footer-col ul li a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      padding-top: 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.85rem;
    }
    .trust-badges-bar {
      display: flex;
      gap: 20px;
      align-items: center;
      flex-wrap: wrap;
      margin-top: 10px;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .bento-hero-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
      }
      .bento-hero-main {
        grid-column: 1 / -1;
      }
      .bento-side-card1, .bento-side-card2, .bento-cta-strip {
        grid-column: 1 / -1;
        grid-row: auto;
      }
      .grid-matrix-4, .metrics-grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .products-grid-3, .stories-grid-3, .news-grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .feed-layout {
        grid-template-columns: 1fr;
      }
      .contact-card-wrap {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .footer-grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .hero-h1 {
        font-size: 2.1rem;
      }
      .grid-matrix-4, .metrics-grid-4, .products-grid-3, .stories-grid-3, .news-grid-3, .comparison-wrapper {
        grid-template-columns: 1fr;
      }
      .philosophy-grid {
        grid-template-columns: 1fr;
      }
      .milestone-timeline::before {
        left: 20px;
      }
      .milestone-row, .milestone-row:nth-child(even) {
        flex-direction: column;
        align-items: flex-start;
        padding-left: 50px;
      }
      .milestone-box {
        width: 100%;
      }
      .milestone-node {
        left: 20px;
        top: 24px;
      }
      .update-record {
        grid-template-columns: 1fr;
        gap: 12px;
      }
      .sync-banner {
        flex-direction: column;
        padding: 36px 24px;
      }
      .footer-grid-4 {
        grid-template-columns: 1fr;
      }
      .bento-cta-strip {
        flex-direction: column;
        align-items: flex-start;
      }
      .contact-card-wrap {
        padding: 28px 20px;
      }
    }