/* roulang page: index */
:root {
      --primary: #0F52BA;
      --primary-dark: #0A3A85;
      --secondary: #1E88E5;
      --accent: #00A86B;
      --accent-soft: rgba(0, 168, 107, 0.1);
      --dark-navy: #0B192C;
      --dark-navy-alt: #0F2038;
      --text-main: #111827;
      --text-muted: #4B5563;
      --text-light: #9CA3AF;
      --bg-white: #FFFFFF;
      --bg-surface: #F8FAFC;
      --bg-subtle: #EDF2F7;
      --border-color: #E2E8F0;
      --border-focus: #93C5FD;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
      --shadow-md: 0 4px 20px -2px rgba(15, 82, 186, 0.06), 0 2px 6px -1px rgba(0, 0, 0, 0.03);
      --shadow-lg: 0 12px 28px -4px rgba(15, 82, 186, 0.12), 0 4px 10px -2px rgba(0, 0, 0, 0.04);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 14px;
      --max-width: 1240px;
      --transition: all 0.25s ease-in-out;
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-white);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: 1rem;
    }

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

    /* 顶部信息条 */
    .top-bar {
      background: #F1F5F9;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.825rem;
      color: var(--text-muted);
      padding: 6px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
    }
    .top-bar-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--primary);
      font-weight: 600;
    }
    .top-bar-badge::before {
      content: "";
      width: 8px;
      height: 8px;
      background-color: var(--accent);
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 0 2px rgba(0, 168, 107, 0.25);
    }

    /* 导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }
    .header-nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: -0.5px;
    }
    .brand-logo svg {
      width: 32px;
      height: 32px;
      fill: var(--primary);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }
    .nav-links a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 6px 0;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--primary);
    }
    .nav-links a::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: var(--transition);
    }
    .nav-links a:hover::after, .nav-links a.active::after {
      width: 100%;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    /* 按钮通用组件 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      line-height: 1.4;
      white-space: nowrap;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFF;
      box-shadow: 0 4px 14px rgba(15, 82, 186, 0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
      transform: translateY(-1px);
      box-shadow: 0 6px 18px rgba(15, 82, 186, 0.35);
    }
    .btn-outline {
      background-color: transparent;
      border-color: var(--border-color);
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: rgba(15, 82, 186, 0.03);
    }
    .btn-accent {
      background-color: var(--accent);
      color: #FFF;
      box-shadow: 0 4px 14px rgba(0, 168, 107, 0.25);
    }
    .btn-accent:hover {
      background-color: #008f5a;
      transform: translateY(-1px);
    }

    /* 板块通用规范 */
    .section-wrap {
      padding: 84px 0;
      position: relative;
    }
    .section-wrap.alt-bg {
      background-color: var(--bg-surface);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 1px;
      background: rgba(15, 82, 186, 0.08);
      padding: 4px 12px;
      border-radius: 50px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 1. Hero 矮横幅 */
    .hero-banner {
      background: linear-gradient(135deg, #F0F5FD 0%, #FFFFFF 60%, #E8F1FC 100%);
      padding: 60px 0 68px;
      border-bottom: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }
    .hero-banner::after {
      content: "";
      position: absolute;
      right: 0;
      bottom: 0;
      width: 45%;
      height: 100%;
      background-image: url('/assets/images/8419eae3fecc1253.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.15;
      pointer-events: none;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.35fr 0.85fr;
      gap: 40px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero-content h1 {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .hero-content h1 span {
      color: var(--primary);
    }
    .hero-summary {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 28px;
    }
    .hero-ctas {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      align-items: center;
    }
    .hero-data-card {
      background: rgba(255, 255, 255, 0.95);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-md);
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .data-row-stat {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      padding-bottom: 12px;
      border-bottom: 1px dashed var(--border-color);
    }
    .data-row-stat:last-child {
      border-bottom: none;
      padding-bottom: 0;
    }
    .data-label {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .data-val {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      font-family: monospace;
    }
    .data-val.green {
      color: var(--accent);
    }

    /* 2. 卖点三连 */
    .triad-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .triad-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .triad-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(15, 82, 186, 0.25);
    }
    .triad-icon-box {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-sm);
      background: rgba(15, 82, 186, 0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary);
    }
    .triad-icon-box svg {
      width: 28px;
      height: 28px;
    }
    .triad-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .triad-card p {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 3. 入口矩阵 */
    .matrix-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .matrix-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      transition: var(--transition);
      text-decoration: none;
      display: block;
    }
    .matrix-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }
    .matrix-badge {
      display: inline-block;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 3px 8px;
      background: var(--bg-subtle);
      border-radius: var(--radius-sm);
      color: var(--primary);
      margin-bottom: 12px;
    }
    .matrix-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .matrix-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 4. 最新发布 (图文并排) */
    .release-box {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
    }
    .release-img {
      position: relative;
      height: 100%;
      min-height: 380px;
      background-color: #0A192F;
    }
    .release-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .release-body {
      padding: 40px;
    }
    .release-ver-tag {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--accent);
      background: var(--accent-soft);
      padding: 4px 12px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 16px;
    }
    .release-body h3 {
      font-size: 1.6rem;
      font-weight: 700;
      margin-bottom: 14px;
    }
    .release-body p {
      font-size: 0.975rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.7;
    }
    .release-features {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-bottom: 28px;
    }
    .release-features li {
      font-size: 0.925rem;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .release-features li::before {
      content: "✓";
      color: var(--accent);
      font-weight: 900;
    }

    /* 5. 热门专题 (异构卡片流) */
    .topics-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .topic-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .topic-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .topic-cover {
      height: 190px;
      position: relative;
      overflow: hidden;
      background: #CBD5E1;
    }
    .topic-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .topic-card:hover .topic-cover img {
      transform: scale(1.05);
    }
    .topic-pill {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(15, 82, 186, 0.85);
      color: #FFF;
      font-size: 0.75rem;
      padding: 3px 10px;
      border-radius: 4px;
      font-weight: 600;
    }
    .topic-details {
      padding: 24px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .topic-details h4 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .topic-details p {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }
    .topic-link {
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 6. 深色对比架构 (Dark Philosophy) */
    .dark-arch-section {
      background: radial-gradient(circle at 80% 20%, #152A4A 0%, var(--dark-navy) 100%);
      color: #FFF;
      padding: 90px 0;
    }
    .dark-arch-section .section-title {
      color: #FFFFFF;
    }
    .dark-arch-section .section-desc {
      color: #94A3B8;
    }
    .arch-flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 48px;
      position: relative;
    }
    .arch-node {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      position: relative;
      transition: var(--transition);
    }
    .arch-node:hover {
      background: rgba(255, 255, 255, 0.09);
      border-color: var(--secondary);
      transform: translateY(-3px);
    }
    .arch-step {
      font-size: 0.8rem;
      font-weight: 800;
      color: var(--secondary);
      letter-spacing: 1px;
      margin-bottom: 12px;
      display: block;
    }
    .arch-node h4 {
      font-size: 1.15rem;
      margin-bottom: 10px;
      color: #F8FAFC;
    }
    .arch-node p {
      font-size: 0.875rem;
      color: #CBD5E1;
      line-height: 1.6;
    }

    /* 7. 资讯列表与研报证据 */
    .news-dual-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }
    .news-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      gap: 20px;
      transition: var(--transition);
    }
    .news-item:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .news-date {
      min-width: 68px;
      text-align: center;
      background: var(--bg-surface);
      border-radius: var(--radius-sm);
      padding: 8px 4px;
      height: fit-content;
      border: 1px solid var(--border-color);
    }
    .news-date-day {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      display: block;
      line-height: 1;
      margin-bottom: 4px;
    }
    .news-date-meta {
      font-size: 0.75rem;
      color: var(--text-muted);
    }
    .news-info h4 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .news-info p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 8. 数据指标统计 (成功数据条) */
    .metrics-bar-section {
      background: linear-gradient(90deg, #0F52BA 0%, #1565C0 100%);
      color: #FFF;
      padding: 56px 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-item {
      padding: 12px;
    }
    .metric-number {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1;
      margin-bottom: 10px;
      font-family: monospace;
      color: #FFFFFF;
    }
    .metric-number span {
      font-size: 1.5rem;
      font-weight: 600;
      color: #93C5FD;
      margin-left: 2px;
    }
    .metric-desc {
      font-size: 0.95rem;
      color: #DBEAFE;
      font-weight: 500;
    }

    /* 9. 对比我们 vs 传统自建 */
    .compare-table-wrap {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .compare-table th, .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.95rem;
    }
    .compare-table th {
      background: var(--bg-surface);
      font-weight: 700;
      color: var(--text-main);
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .compare-highlight {
      background: rgba(15, 82, 186, 0.02);
      font-weight: 600;
      color: var(--primary);
    }
    .compare-tag-good {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      color: var(--accent);
      font-weight: 600;
    }
    .compare-tag-bad {
      color: #DC2626;
    }

    /* 10. 用户口碑评语 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testimonial-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-quote {
      font-size: 0.975rem;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 24px;
      position: relative;
    }
    .testimonial-quote::before {
      content: "“";
      font-size: 3rem;
      color: var(--border-color);
      position: absolute;
      top: -24px;
      left: -8px;
      line-height: 1;
      opacity: 0.6;
    }
    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 14px;
      padding-top: 16px;
      border-top: 1px solid var(--border-color);
    }
    .user-avatar-circle {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }
    .user-meta-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .user-meta-role {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 11. 安全与合规保障条 */
    .security-strip {
      background: var(--bg-surface);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 48px 0;
    }
    .security-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .sec-badge-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
    }
    .sec-badge-item svg {
      width: 28px;
      height: 28px;
      fill: var(--primary);
      flex-shrink: 0;
      margin-top: 2px;
    }
    .sec-badge-item h5 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 4px;
      color: var(--text-main);
    }
    .sec-badge-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 12. 异议拆解 FAQ */
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-details {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-details[open] {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .faq-summary {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-summary::after {
      content: "+";
      font-size: 1.4rem;
      color: var(--primary);
      font-weight: 400;
      transition: transform 0.2s ease;
    }
    .faq-details[open] .faq-summary::after {
      content: "−";
    }
    .faq-content {
      padding: 0 24px 22px 24px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }

    /* 13. 线索获客与联系表单位 */
    .contact-cta-card {
      background: linear-gradient(135deg, #0F52BA 0%, #0A3A85 100%);
      border-radius: var(--radius-lg);
      padding: 56px 48px;
      color: #FFF;
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 48px;
      align-items: center;
      box-shadow: var(--shadow-lg);
    }
    .cta-info h3 {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.25;
    }
    .cta-info p {
      font-size: 1rem;
      color: #E2E8F0;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .cta-support-tel {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.15rem;
      font-weight: 700;
    }
    .cta-form-box {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 32px;
      color: var(--text-main);
      box-shadow: var(--shadow-md);
    }
    .form-group-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 16px;
    }
    .form-control {
      display: flex;
      flex-direction: column;
      gap: 6px;
      margin-bottom: 16px;
    }
    .form-control label {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-main);
    }
    .form-control input, .form-control select {
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      outline: none;
      transition: var(--transition);
      background: #FAFAFA;
    }
    .form-control input:focus, .form-control select:focus {
      border-color: var(--primary);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(15, 82, 186, 0.15);
    }
    .privacy-notice {
      font-size: 0.775rem;
      color: var(--text-light);
      margin-top: 12px;
      line-height: 1.5;
    }

    /* 底部固定浮动转化条 */
    .sticky-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(11, 25, 44, 0.96);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      border-top: 1px solid rgba(255, 255, 255, 0.15);
      z-index: 990;
      padding: 12px 0;
      box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.15);
      transform: translateY(100%);
      transition: transform 0.3s ease;
    }
    .sticky-bar.visible {
      transform: translateY(0);
    }
    .sticky-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 20px;
    }
    .sticky-title {
      color: #FFFFFF;
      font-size: 0.95rem;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .sticky-tag {
      background: var(--accent);
      color: #FFF;
      font-size: 0.75rem;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 700;
    }
    .sticky-actions {
      display: flex;
      gap: 12px;
    }

    /* 页脚 */
    .site-footer {
      background: #0B192C;
      color: #94A3B8;
      padding: 64px 0 32px;
      border-top: 1px solid #1E293B;
      font-size: 0.9rem;
    }
    .footer-main-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      font-size: 1.3rem;
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 16px;
      font-size: 0.875rem;
    }
    .footer-col h5 {
      font-size: 1rem;
      color: #FFFFFF;
      margin-bottom: 18px;
      font-weight: 600;
    }
    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col a:hover {
      color: #FFFFFF;
    }
    .footer-contact-item {
      margin-bottom: 10px;
      line-height: 1.5;
      font-size: 0.875rem;
    }
    .footer-contact-item strong {
      color: #CBD5E1;
      display: inline-block;
      width: 70px;
    }
    .footer-bottom {
      padding-top: 28px;
      border-top: 1px solid #1E293B;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8rem;
    }

    /* 移动端与响应式断点 */
    @media (max-width: 1024px) {
      .triad-grid, .topics-grid, .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .matrix-grid, .arch-flow-grid, .security-grid, .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-main-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-grid, .release-box, .contact-cta-card {
        grid-template-columns: 1fr;
      }
      .release-img {
        min-height: 260px;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .section-wrap {
        padding: 56px 0;
      }
      .section-title {
        font-size: 1.65rem;
      }
      .hero-content h1 {
        font-size: 1.85rem;
      }
      .triad-grid, .topics-grid, .testimonials-grid, .news-dual-grid, .matrix-grid, .arch-flow-grid, .security-grid, .metrics-grid {
        grid-template-columns: 1fr;
      }
      .form-group-wrap {
        grid-template-columns: 1fr;
      }
      .contact-cta-card {
        padding: 32px 20px;
      }
      .footer-main-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
      .sticky-title {
        display: none;
      }
      .sticky-actions {
        width: 100%;
        justify-content: space-between;
      }
      .sticky-actions .btn {
        flex: 1;
      }
    }