/* roulang page: index */
:root {
      --primary: #1B2A4A;
      --primary-light: #243862;
      --primary-dark: #0F172A;
      --accent: #C5A880;
      --accent-hover: #b39369;
      --accent-soft: rgba(197, 168, 128, 0.12);
      --bg-light: #F8F9FA;
      --bg-white: #FFFFFF;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --border-color: rgba(226, 232, 240, 0.85);
      --border-dark: rgba(255, 255, 255, 0.12);
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
      --shadow-md: 0 6px 16px -4px rgba(27,42,74,0.08);
      --shadow-lg: 0 12px 28px -6px rgba(27,42,74,0.14);
      --radius: 8px;
      --transition: all 0.25s ease-in-out;
    }

    * {
      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;
      line-height: 1.78;
      color: var(--text-main);
      background-color: var(--bg-white);
      -webkit-font-smoothing: antialiased;
    }

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

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

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部提示条与主导航 */
    .topbar {
      background-color: #0d1726;
      color: #94A3B8;
      font-size: 13px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 8px 0;
    }
    .topbar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .topbar-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--accent);
      font-weight: 500;
    }
    .topbar-info {
      display: flex;
      gap: 20px;
    }

    .header-nav {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.98);
      backdrop-filter: blur(10px);
      box-shadow: 0 1px 4px rgba(0,0,0,0.06);
      border-bottom: 1px solid var(--border-color);
    }
    .header-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 74px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-logo .brand-mark {
      width: 40px;
      height: 40px;
      background: var(--primary);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 20px;
      border-radius: var(--radius);
      border: 1px solid var(--accent);
    }
    .brand-logo .brand-text {
      font-size: 20px;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: 0.5px;
    }
    .brand-logo .brand-sub {
      font-size: 11px;
      color: var(--text-muted);
      letter-spacing: 1px;
      text-transform: uppercase;
      display: block;
      margin-top: -2px;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-item {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
      position: relative;
      padding: 6px 0;
    }
    .nav-item:hover, .nav-item.active {
      color: var(--accent);
    }
    .nav-item::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--accent);
      transition: var(--transition);
    }
    .nav-item:hover::after, .nav-item.active::after {
      width: 100%;
    }

    .nav-cta {
      background: var(--primary);
      color: #FFFFFF;
      padding: 10px 22px;
      border-radius: var(--radius);
      font-size: 14px;
      font-weight: 600;
      border: 1px solid var(--primary);
    }
    .nav-cta:hover {
      background: var(--primary-light);
      border-color: var(--primary-light);
      color: #FFFFFF;
    }

    /* 移动端汉堡 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--primary);
      margin: 5px 0;
      transition: var(--transition);
    }

    /* 板块通用体系 */
    .section-wrap {
      padding: 88px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-light);
    }
    .section-dark {
      background-color: var(--primary-dark);
      color: #F8FAFC;
    }
    .section-header {
      margin-bottom: 52px;
    }
    .section-header.text-center {
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 12px;
      background: var(--accent-soft);
      padding: 4px 14px;
      border-radius: 4px;
      border: 1px solid rgba(197, 168, 128, 0.3);
    }
    .section-dark .section-tag {
      background: rgba(197, 168, 128, 0.15);
    }
    .section-title {
      font-size: 32px;
      line-height: 1.3;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 16px;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 820px;
      margin: 0 auto;
      line-height: 1.8;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* 按钮通用规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 13px 28px;
      border-radius: var(--radius);
      font-size: 15px;
      font-weight: 600;
      min-height: 48px;
      cursor: pointer;
      transition: var(--transition);
      text-align: center;
      border: 1px solid transparent;
    }
    .btn-gold {
      background-color: var(--accent);
      color: #1a1610;
      box-shadow: 0 4px 12px rgba(197, 168, 128, 0.25);
    }
    .btn-gold:hover {
      background-color: var(--accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(197, 168, 128, 0.35);
    }
    .btn-outline {
      background: transparent;
      border-color: var(--border-color);
      color: var(--primary);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      background: rgba(27, 42, 74, 0.04);
      transform: translateY(-2px);
    }
    .btn-outline-white {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.3);
      color: #FFFFFF;
    }
    .btn-outline-white:hover {
      border-color: #FFFFFF;
      background: rgba(255, 255, 255, 0.1);
      transform: translateY(-2px);
    }

    /* 1. 首屏 Hero */
    .hero-section {
      position: relative;
      background-color: #0b1320;
      color: #FFFFFF;
      padding: 110px 0 100px;
      background-image: linear-gradient(rgba(11, 19, 32, 0.88), rgba(15, 23, 42, 0.95)), url('/assets/images/37eea4e7ca41a3c9.webp');
      background-size: cover;
      background-position: center;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .hero-content {
      max-width: 900px;
      margin: 0 auto;
      text-align: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      border-radius: 20px;
      background: rgba(197, 168, 128, 0.15);
      border: 1px solid var(--accent);
      color: var(--accent);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: 0.5px;
      margin-bottom: 22px;
      color: #FFFFFF;
    }
    .hero-title span {
      color: var(--accent);
    }
    .hero-intro {
      font-size: 17px;
      line-height: 1.8;
      color: #CBD5E1;
      margin-bottom: 38px;
      text-align: left;
      background: rgba(255, 255, 255, 0.04);
      padding: 24px 30px;
      border-radius: var(--radius);
      border-left: 3px solid var(--accent);
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 20px;
      margin-bottom: 46px;
    }
    .hero-trust-bar {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 36px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding-top: 28px;
    }
    .trust-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: #94A3B8;
    }
    .trust-item strong {
      color: #E2E8F0;
      font-weight: 600;
    }

    /* 2. 安全主张与痛点排查 */
    .pain-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .pain-profile-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }
    .pain-stats-row {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
      margin: 28px 0;
    }
    .pain-stat-box {
      border: 1px solid #E2E8F0;
      border-radius: var(--radius);
      padding: 18px;
      background: var(--bg-light);
    }
    .pain-stat-num {
      font-size: 26px;
      font-weight: 700;
      color: var(--primary);
    }
    .pain-stat-label {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 4px;
    }
    .pain-list {
      display: grid;
      grid-template-columns: 1fr;
      gap: 18px;
    }
    .pain-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-left: 4px solid #EF4444;
      border-radius: var(--radius);
      padding: 22px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .pain-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }
    .pain-card-head {
      display: flex;
      justify-content: space-between;
      margin-bottom: 8px;
    }
    .pain-card-head h4 {
      font-size: 17px;
      color: var(--primary);
    }
    .pain-badge {
      font-size: 12px;
      color: #EF4444;
      background: #FEF2F2;
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
    }
    .pain-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 3. 检查项：六大维权抗辩体系 */
    .grid-3col {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .check-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .check-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
      border-color: var(--accent);
    }
    .check-index {
      font-size: 20px;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 12px;
    }
    .check-card h3 {
      font-size: 19px;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .check-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .check-tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      border-top: 1px solid #F1F5F9;
      padding-top: 14px;
    }
    .sub-tag {
      font-size: 12px;
      color: var(--primary);
      background: #EEF2F6;
      padding: 2px 8px;
      border-radius: 4px;
    }

    /* 4. 重点业务实务卡片 */
    .service-card-deep {
      background: #FFFFFF;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .service-card-deep:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-4px);
    }
    .service-img-wrap {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .service-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .service-card-deep:hover .service-img-wrap img {
      transform: scale(1.05);
    }
    .service-body {
      padding: 28px;
    }
    .service-body h3 {
      font-size: 20px;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .service-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 18px;
    }
    .service-legal-point {
      font-size: 13px;
      background: #F8FAFC;
      border-left: 2px solid var(--accent);
      padding: 8px 12px;
      color: #475569;
    }

    /* 5. 深色实务案例与化解理念 */
    .tactics-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .tactics-box {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius);
      padding: 32px;
    }
    .tactic-step {
      display: flex;
      gap: 18px;
      margin-bottom: 24px;
    }
    .tactic-step:last-child {
      margin-bottom: 0;
    }
    .tactic-circle {
      flex-shrink: 0;
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--accent);
      color: #0F172A;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
    }
    .tactic-info h4 {
      font-size: 17px;
      color: #FFFFFF;
      margin-bottom: 6px;
    }
    .tactic-info p {
      font-size: 14px;
      color: #94A3B8;
      line-height: 1.7;
    }

    /* 6. 典型用户维权故事（时间轴） */
    .story-timeline {
      position: relative;
      max-width: 960px;
      margin: 0 auto;
    }
    .story-timeline::before {
      content: '';
      position: absolute;
      left: 50%;
      top: 0;
      bottom: 0;
      width: 2px;
      background: #CBD5E1;
      transform: translateX(-50%);
    }
    .story-node {
      position: relative;
      margin-bottom: 40px;
      display: flex;
      align-items: center;
    }
    .story-node:nth-child(odd) {
      flex-direction: row-reverse;
    }
    .story-content {
      width: 44%;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }
    .story-badge {
      font-size: 12px;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 6px;
    }
    .story-content h4 {
      font-size: 18px;
      color: var(--primary);
      margin-bottom: 8px;
    }
    .story-content p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .story-dot {
      width: 16px;
      height: 16px;
      background: var(--accent);
      border: 3px solid #FFFFFF;
      box-shadow: 0 0 0 3px rgba(197, 168, 128, 0.4);
      border-radius: 50%;
      position: absolute;
      left: 50%;
      transform: translateX(-50%);
      z-index: 2;
    }

    /* 7. 关键处置数据统计条 */
    .metrics-bar {
      background: linear-gradient(135deg, var(--primary) 0%, #111C35 100%);
      color: #FFFFFF;
      border-radius: var(--radius);
      padding: 48px 36px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
      border: 1px solid rgba(197, 168, 128, 0.3);
    }
    .metric-item {
      padding: 0 16px;
      border-right: 1px solid rgba(255, 255, 255, 0.12);
    }
    .metric-item:last-child {
      border-right: none;
    }
    .metric-number {
      font-size: 38px;
      font-weight: 800;
      color: var(--accent);
      line-height: 1.1;
      margin-bottom: 8px;
    }
    .metric-label {
      font-size: 14px;
      color: #E2E8F0;
      font-weight: 500;
    }
    .metric-sub {
      font-size: 12px;
      color: #94A3B8;
      margin-top: 4px;
    }

    /* 8. 委托反馈与客户证言 */
    .review-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-text {
      font-size: 14px;
      color: var(--text-main);
      line-height: 1.8;
      font-style: italic;
      margin-bottom: 20px;
      position: relative;
    }
    .review-text::before {
      content: '“';
      font-size: 36px;
      color: #CBD5E1;
      display: block;
      line-height: 1;
      margin-bottom: 4px;
    }
    .review-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }
    .review-entity {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
    }
    .review-case-type {
      font-size: 12px;
      color: var(--accent);
      background: var(--accent-soft);
      padding: 2px 8px;
      border-radius: 4px;
    }

    /* 9. 四步实务化解方法 */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px 22px;
      text-align: left;
      position: relative;
      transition: var(--transition);
    }
    .step-card:hover {
      border-color: var(--accent);
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }
    .step-seq {
      width: 36px;
      height: 36px;
      background: var(--primary);
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      border-radius: 6px;
      margin-bottom: 16px;
      font-size: 15px;
    }
    .step-card h4 {
      font-size: 17px;
      color: var(--primary);
      margin-bottom: 10px;
    }
    .step-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 10. 适用主体与场景排查 */
    .audience-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .audience-card {
      background: #FFFFFF;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }
    .audience-badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      background: #EEF2F6;
      padding: 3px 10px;
      border-radius: 4px;
      margin-bottom: 14px;
    }
    .audience-card h3 {
      font-size: 19px;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .audience-card ul {
      margin-top: 14px;
    }
    .audience-card li {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 8px;
      position: relative;
      padding-left: 14px;
    }
    .audience-card li::before {
      content: '•';
      position: absolute;
      left: 0;
      color: var(--accent);
      font-weight: bold;
    }

    /* 11. 法规资讯与裁判实务 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .news-thumb {
      height: 180px;
      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-content {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 16px;
      color: var(--primary);
      line-height: 1.4;
      margin-bottom: 10px;
      font-weight: 600;
    }
    .news-brief {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .news-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .news-link:hover {
      color: var(--accent);
    }

    /* 12. 常见纠纷手风琴解答区 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      margin-bottom: 16px;
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 600;
      color: var(--primary);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #FFFFFF;
      user-select: none;
    }
    .faq-question:hover {
      background: #F8FAFC;
    }
    .faq-icon {
      font-size: 18px;
      color: var(--accent);
      transition: transform 0.25s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #FAFAFA;
      border-top: 1px solid transparent;
    }
    .faq-item.active .faq-answer {
      border-top-color: var(--border-color);
    }
    .faq-answer-inner {
      padding: 20px 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
    }

    /* 13. 终极行动转化区 */
    .cta-audit-wrap {
      background: linear-gradient(145deg, #0b1322 0%, #17243c 100%);
      color: #FFFFFF;
      border-radius: var(--radius);
      padding: 56px 48px;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(197, 168, 128, 0.3);
    }
    .audit-grid {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .audit-text h3 {
      font-size: 28px;
      color: #FFFFFF;
      margin-bottom: 16px;
      line-height: 1.3;
    }
    .audit-text p {
      font-size: 15px;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .audit-features {
      display: grid;
      grid-template-columns: 1fr;
      gap: 12px;
    }
    .audit-feature-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 13px;
      color: #94A3B8;
    }
    .audit-form-box {
      background: #FFFFFF;
      border-radius: var(--radius);
      padding: 32px;
      color: var(--text-main);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      height: 44px;
      border: 1px solid #CBD5E1;
      border-radius: 4px;
      padding: 0 14px;
      font-size: 14px;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 2px rgba(27,42,74,0.1);
    }
    .form-privacy-note {
      font-size: 11px;
      color: var(--text-muted);
      line-height: 1.5;
      margin-top: 12px;
      text-align: center;
    }

    /* 页脚 */
    .site-footer {
      background-color: #0b111e;
      color: #94A3B8;
      font-size: 14px;
      padding: 64px 0 28px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      font-size: 18px;
      color: #FFFFFF;
      margin-bottom: 14px;
      font-weight: 700;
    }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.8;
      color: #64748B;
      margin-bottom: 16px;
    }
    .footer-col h5 {
      font-size: 15px;
      color: #FFFFFF;
      margin-bottom: 16px;
      font-weight: 600;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #94A3B8;
      font-size: 13px;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: #64748B;
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .grid-3col, .audience-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-bar {
        grid-template-columns: repeat(2, 1fr);
      }
      .metric-item:nth-child(2) {
        border-right: none;
      }
      .metric-item {
        margin-bottom: 16px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .topbar {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .nav-menu {
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        display: none;
        border-top: 1px solid var(--border-color);
      }
      .nav-menu.active {
        display: flex;
      }
      .nav-cta {
        display: none;
      }
      .pain-grid, .tactics-layout, .audit-grid {
        grid-template-columns: 1fr;
      }
      .grid-3col, .audience-grid, .news-grid, .steps-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 30px;
      }
      .hero-actions {
        flex-direction: column;
      }
      .hero-trust-bar {
        flex-direction: column;
        gap: 12px;
      }
      .story-timeline::before {
        left: 20px;
      }
      .story-node {
        flex-direction: column !important;
        align-items: flex-start;
        padding-left: 44px;
      }
      .story-dot {
        left: 20px;
        top: 24px;
      }
      .story-content {
        width: 100%;
      }
      .metrics-bar {
        grid-template-columns: 1fr;
      }
      .metric-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        padding-bottom: 16px;
      }
      .metric-item:last-child {
        border-bottom: none;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
      }
    }