/* roulang page: index */
:root {
      --primary-dark: #0B1320;
      --card-bg-dark: #111D30;
      --navy-deep: #1E293B;
      --navy-light: #334155;
      --accent-emerald: #059669;
      --accent-bright: #10B981;
      --accent-amber: #D97706;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --text-light: #F8FAFC;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-alt: #F1F5F9;
      --border-subtle: rgba(226, 232, 240, 0.85);
      --border-dark: rgba(255, 255, 255, 0.1);
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-lg: 0 20px 30px -10px rgba(15, 23, 42, 0.12);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-full: 9999px;
      --transition: all 0.25s ease;
      --container-max: 1240px;
    }

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

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

    body {
      font-family: system-ui, -apple-system, "SF Pro Text", "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;
    }

    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: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* Section Utilities */
    .section-wrap {
      padding: 90px 0;
      position: relative;
    }

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

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

    .section-head {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 56px auto;
    }

    .section-head-left {
      text-align: left;
      margin-bottom: 40px;
    }

    .section-badge {
      display: inline-block;
      padding: 6px 14px;
      background: rgba(16, 185, 129, 0.12);
      color: var(--accent-emerald);
      border-radius: var(--radius-full);
      font-size: 0.875rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      margin-bottom: 14px;
      border: 1px solid rgba(16, 185, 129, 0.25);
    }

    .section-dark .section-badge {
      background: rgba(16, 185, 129, 0.18);
      color: var(--accent-bright);
      border-color: rgba(16, 185, 129, 0.35);
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 18px;
      color: var(--text-main);
    }

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

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

    .section-dark .section-subtitle {
      color: #94A3B8;
    }

    /* Button System */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 13px 28px;
      font-size: 1rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      text-align: center;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--accent-bright), var(--accent-emerald));
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(16, 185, 129, 0.45);
    }

    .btn-outline {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.35);
      color: #FFFFFF;
    }

    .btn-outline:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: #FFFFFF;
      transform: translateY(-2px);
    }

    .btn-secondary {
      background: var(--navy-deep);
      color: #FFFFFF;
    }

    .btn-secondary:hover {
      background: #0F172A;
      transform: translateY(-2px);
    }

    /* 顶部双行导航 */
    .top-bar {
      background-color: #060B13;
      color: #94A3B8;
      font-size: 0.825rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .top-bar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 38px;
    }

    .top-bar-items {
      display: flex;
      gap: 20px;
      align-items: center;
    }

    .status-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: var(--accent-bright);
      border-radius: 50%;
      margin-right: 6px;
      box-shadow: 0 0 8px var(--accent-bright);
    }

    .site-nav {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(11, 19, 32, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

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

    .nav-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #FFFFFF;
      font-size: 1.25rem;
      font-weight: 700;
      letter-spacing: -0.3px;
    }

    .brand-icon {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--accent-bright), var(--accent-emerald));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-size: 1.15rem;
      font-weight: 800;
    }

    .nav-menu {
      display: flex;
      gap: 28px;
      align-items: center;
    }

    .nav-link {
      color: #CBD5E1;
      font-size: 0.95rem;
      font-weight: 500;
      padding: 6px 0;
      position: relative;
    }

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

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent-bright);
      transition: var(--transition);
    }

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

    .nav-mobile-toggle {
      display: none;
      background: none;
      border: none;
      color: #FFFFFF;
      font-size: 1.6rem;
      cursor: pointer;
    }

    /* 板块 1: Hero 对比首屏 */
    .hero-section {
      position: relative;
      background: linear-gradient(180deg, #0B1320 0%, #111D30 100%);
      color: #FFFFFF;
      padding: 85px 0 100px;
      overflow: hidden;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .hero-bg-accent {
      position: absolute;
      top: 0;
      right: 0;
      width: 60%;
      height: 100%;
      background: radial-gradient(circle at 70% 30%, rgba(16, 185, 129, 0.15) 0%, transparent 65%);
      pointer-events: none;
    }

    .hero-head-wrap {
      text-align: center;
      max-width: 900px;
      margin: 0 auto 50px;
    }

    .hero-h1 {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 22px;
      background: linear-gradient(120deg, #FFFFFF 40%, #94A3B8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: #94A3B8;
      line-height: 1.8;
      margin-bottom: 30px;
    }

    .hero-actions {
      display: flex;
      gap: 16px;
      justify-content: center;
      margin-bottom: 45px;
    }

    /* Hero 并置对比板 */
    .compare-stage {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 28px;
      background: rgba(15, 23, 42, 0.6);
      padding: 30px;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }

    .compare-card {
      padding: 28px;
      border-radius: var(--radius-md);
      position: relative;
    }

    .compare-card.before {
      background: rgba(30, 41, 59, 0.5);
      border: 1px solid rgba(239, 68, 68, 0.25);
    }

    .compare-card.after {
      background: rgba(16, 185, 129, 0.08);
      border: 1px solid rgba(16, 185, 129, 0.45);
    }

    .compare-badge {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 4px;
      font-size: 0.8rem;
      font-weight: 700;
      margin-bottom: 16px;
      text-transform: uppercase;
    }

    .compare-card.before .compare-badge {
      background: rgba(239, 68, 68, 0.2);
      color: #F87171;
    }

    .compare-card.after .compare-badge {
      background: rgba(16, 185, 129, 0.25);
      color: var(--accent-bright);
    }

    .compare-list li {
      position: relative;
      padding-left: 24px;
      margin-bottom: 14px;
      font-size: 0.95rem;
      color: #CBD5E1;
      line-height: 1.5;
    }

    .compare-card.before .compare-list li::before {
      content: '✕';
      position: absolute;
      left: 0;
      color: #EF4444;
      font-weight: 700;
    }

    .compare-card.after .compare-list li::before {
      content: '✓';
      position: absolute;
      left: 0;
      color: var(--accent-bright);
      font-weight: 700;
    }

    /* 板块 2: 功能亮点 */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .feature-card {
      background: var(--bg-white);
      padding: 32px 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--accent-bright);
    }

    .feature-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: rgba(16, 185, 129, 0.1);
      color: var(--accent-emerald);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

    .feature-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .feature-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 3: 场景矩阵 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }

    .scenario-item {
      background: #FFFFFF;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }

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

    .scenario-thumb {
      height: 170px;
      overflow: hidden;
      position: relative;
    }

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

    .scenario-item:hover .scenario-thumb img {
      transform: scale(1.06);
    }

    .scenario-body {
      padding: 22px;
    }

    .scenario-tag {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--accent-emerald);
      text-transform: uppercase;
      margin-bottom: 8px;
    }

    .scenario-heading {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .scenario-p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 4: 流程步骤 */
    .step-track {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .step-node {
      background: var(--bg-white);
      padding: 30px 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
      position: relative;
      z-index: 2;
    }

    .step-num {
      width: 44px;
      height: 44px;
      background: var(--navy-deep);
      color: var(--accent-bright);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.2rem;
      margin-bottom: 20px;
    }

    .step-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .step-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 5: 演示与架构后台 */
    .demo-block {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .demo-preview {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.15);
      box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
    }

    .demo-preview img {
      width: 100%;
      display: block;
    }

    .demo-spec-list {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .demo-spec-item {
      display: flex;
      gap: 16px;
      padding: 16px;
      background: rgba(30, 41, 59, 0.4);
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.05);
    }

    .demo-spec-icon {
      font-size: 1.4rem;
      color: var(--accent-bright);
      flex-shrink: 0;
      line-height: 1;
    }

    .demo-spec-text h4 {
      font-size: 1.05rem;
      color: #FFFFFF;
      margin-bottom: 4px;
    }

    .demo-spec-text p {
      font-size: 0.9rem;
      color: #94A3B8;
      line-height: 1.5;
    }

    /* 板块 6: 真实客户口碑 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .testi-card {
      background: var(--bg-white);
      padding: 32px 28px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testi-stars {
      color: var(--accent-amber);
      font-size: 1rem;
      margin-bottom: 14px;
      letter-spacing: 2px;
    }

    .testi-content {
      font-size: 0.98rem;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .testi-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid #F1F5F9;
      padding-top: 18px;
    }

    .testi-avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--navy-deep);
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }

    .testi-info h5 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
    }

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

    /* 板块 7: 套餐与选型对比 */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }

    .pricing-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-subtle);
      padding: 40px 32px;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: var(--transition);
    }

    .pricing-card.featured {
      border: 2px solid var(--accent-bright);
      box-shadow: 0 20px 40px rgba(16, 185, 129, 0.12);
      transform: scale(1.03);
    }

    .badge-pop {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--accent-bright);
      color: #FFFFFF;
      font-size: 0.8rem;
      font-weight: 700;
      padding: 4px 16px;
      border-radius: var(--radius-full);
      box-shadow: 0 4px 10px rgba(16, 185, 129, 0.4);
    }

    .pricing-name {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .pricing-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      min-height: 44px;
    }

    .pricing-features {
      margin-bottom: 32px;
      flex-grow: 1;
    }

    .pricing-features li {
      padding: 10px 0;
      border-bottom: 1px dashed #E2E8F0;
      font-size: 0.925rem;
      color: #475569;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .pricing-features li span.check {
      color: var(--accent-emerald);
      font-weight: 800;
    }

    /* 板块 8: 行业资讯与技术观察 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .insight-card {
      background: #FFFFFF;
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
    }

    .insight-thumb {
      height: 190px;
      overflow: hidden;
    }

    .insight-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

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

    .insight-meta {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 10px;
      display: flex;
      justify-content: space-between;
    }

    .insight-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 12px;
      line-height: 1.4;
      color: var(--text-main);
    }

    .insight-summary {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    /* 板块 9: 安全审计摘要 */
    .audit-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }

    .audit-box {
      background: rgba(30, 41, 59, 0.4);
      padding: 28px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .audit-box h4 {
      font-size: 1.2rem;
      color: #FFFFFF;
      margin-bottom: 18px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .audit-items li {
      position: relative;
      padding-left: 26px;
      margin-bottom: 12px;
      font-size: 0.95rem;
      color: #CBD5E1;
      line-height: 1.5;
    }

    .audit-items li::before {
      content: '✔';
      position: absolute;
      left: 0;
      color: var(--accent-bright);
    }

    /* 板块 10: 性能指标条 */
    .metrics-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }

    .metric-card {
      padding: 32px 20px;
      background: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
      box-shadow: var(--shadow-sm);
    }

    .metric-val {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--accent-emerald);
      line-height: 1.1;
      margin-bottom: 8px;
    }

    .metric-label {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .metric-sub {
      font-size: 0.825rem;
      color: var(--text-muted);
    }

    /* 板块 11: 适用画像 */
    .persona-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .persona-card {
      background: var(--bg-white);
      padding: 28px 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-subtle);
      border-top: 4px solid var(--navy-deep);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .persona-card:hover {
      border-top-color: var(--accent-bright);
      transform: translateY(-4px);
    }

    .persona-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .persona-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 12: 常见疑难解答 */
    .faq-list {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      overflow: hidden;
    }

    .faq-question {
      padding: 22px 26px;
      cursor: pointer;
      font-weight: 700;
      font-size: 1.05rem;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-question::after {
      content: '+';
      font-size: 1.4rem;
      color: var(--accent-emerald);
      transition: transform 0.25s ease;
    }

    .faq-item.active .faq-question::after {
      transform: rotate(45deg);
    }

    .faq-answer {
      padding: 0 26px 22px 26px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      display: none;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }

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

    /* 板块 13: 部署下载与接入表单收口 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 48px;
      background: #111D30;
      border-radius: var(--radius-lg);
      padding: 56px;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: var(--shadow-lg);
    }

    .contact-info h3 {
      font-size: 2rem;
      color: #FFFFFF;
      font-weight: 700;
      margin-bottom: 18px;
      line-height: 1.3;
    }

    .contact-info p {
      font-size: 1rem;
      color: #94A3B8;
      line-height: 1.7;
      margin-bottom: 30px;
    }

    .deploy-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 36px;
    }

    .deploy-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 16px;
      background: rgba(255, 255, 255, 0.06);
      border-radius: var(--radius-full);
      font-size: 0.85rem;
      color: #CBD5E1;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .contact-form {
      background: rgba(15, 23, 42, 0.7);
      padding: 36px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-label {
      display: block;
      font-size: 0.9rem;
      color: #CBD5E1;
      margin-bottom: 8px;
      font-weight: 600;
    }

    .form-control {
      width: 100%;
      padding: 13px 16px;
      background: #0A111C;
      border: 1px solid #334155;
      border-radius: var(--radius-sm);
      color: #FFFFFF;
      font-size: 0.95rem;
      outline: none;
      transition: var(--transition);
    }

    .form-control:focus {
      border-color: var(--accent-bright);
      box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
    }

    /* 页脚 */
    .site-footer {
      background: #060B13;
      color: #94A3B8;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.925rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }

    .footer-col h5 {
      color: #FFFFFF;
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

    .footer-col ul li {
      margin-bottom: 12px;
    }

    .footer-col ul a:hover {
      color: var(--accent-bright);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 28px;
      text-align: center;
      font-size: 0.85rem;
      color: #64748B;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .compare-stage { grid-template-columns: 1fr; }
      .feature-grid { grid-template-columns: repeat(2, 1fr); }
      .scenario-grid { grid-template-columns: repeat(2, 1fr); }
      .step-track { grid-template-columns: repeat(2, 1fr); }
      .pricing-grid { grid-template-columns: 1fr; }
      .pricing-card.featured { transform: none; }
      .metrics-bar { grid-template-columns: repeat(2, 1fr); }
      .persona-grid { grid-template-columns: repeat(2, 1fr); }
      .contact-wrapper { grid-template-columns: 1fr; }
      .demo-block { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
      .hero-h1 { font-size: 2.1rem; }
      .section-title { font-size: 1.75rem; }
      .top-bar { display: none; }
      .nav-menu { display: none; }
      .nav-menu.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 74px;
        left: 0;
        width: 100%;
        background: #0B1320;
        padding: 24px;
        border-bottom: 1px solid #1E293B;
      }
      .nav-mobile-toggle { display: block; }
      .feature-grid { grid-template-columns: 1fr; }
      .scenario-grid { grid-template-columns: 1fr; }
      .step-track { grid-template-columns: 1fr; }
      .testimonial-grid { grid-template-columns: 1fr; }
      .insights-grid { grid-template-columns: 1fr; }
      .audit-grid { grid-template-columns: 1fr; }
      .metrics-bar { grid-template-columns: 1fr; }
      .persona-grid { grid-template-columns: 1fr; }
      .contact-wrapper { padding: 30px 20px; }
      .footer-grid { grid-template-columns: 1fr; }
    }