/* roulang page: index */
:root {
      --primary: #2A4BDE;
      --primary-hover: #1E3BB8;
      --primary-light: rgba(42, 75, 222, 0.08);
      --secondary: #7033FF;
      --accent: #F59E0B;
      --dark-bg: #0B1120;
      --dark-surface: #151E32;
      --light-bg: #F8FAFC;
      --white: #FFFFFF;
      --text-main: #0F172A;
      --text-muted: #64748B;
      --border-color: rgba(226, 232, 240, 0.85);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 22px;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 12px 28px -8px rgba(15, 23, 42, 0.08);
      --shadow-hover: 0 22px 42px -12px rgba(42, 75, 222, 0.16);
      --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

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

    body {
      font-family: var(--font-family);
      background-color: var(--light-bg);
      color: var(--text-main);
      line-height: 1.68;
      overflow-x: hidden;
    }

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

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

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部双行导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
    }

    .top-bar {
      background: linear-gradient(90deg, #1E293B, #0F172A);
      color: #E2E8F0;
      font-size: 13px;
      height: 38px;
      display: flex;
      align-items: center;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }

    .top-pill {
      background: rgba(112, 51, 255, 0.2);
      color: #C4B5FD;
      padding: 2px 10px;
      border-radius: 20px;
      font-size: 12px;
      margin-right: 10px;
      border: 1px solid rgba(112, 51, 255, 0.4);
    }

    .top-links a {
      color: #94A3B8;
      margin-left: 20px;
      font-size: 12px;
    }
    .top-links a:hover {
      color: #FFFFFF;
    }

    .main-nav {
      height: 72px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 22px;
      color: var(--primary);
      letter-spacing: -0.5px;
    }

    .brand-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFFFFF;
      font-size: 18px;
      box-shadow: 0 4px 12px rgba(42, 75, 222, 0.35);
    }

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

    .nav-item {
      font-size: 15px;
      font-weight: 500;
      color: #334155;
      padding: 6px 2px;
      position: relative;
    }

    .nav-item:hover, .nav-item.active {
      color: var(--primary);
    }

    .nav-item::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: width 0.3s;
    }

    .nav-item:hover::after, .nav-item.active::after {
      width: 100%;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      border: 1px solid transparent;
      outline: none;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: var(--white);
      box-shadow: 0 6px 18px rgba(42, 75, 222, 0.3);
    }

    .btn-primary:hover {
      box-shadow: 0 8px 24px rgba(42, 75, 222, 0.45);
      transform: translateY(-2px);
    }

    .btn-secondary {
      background: #FFFFFF;
      color: var(--text-main);
      border-color: #CBD5E1;
    }

    .btn-secondary:hover {
      background: #F1F5F9;
      border-color: #94A3B8;
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 板块通用标题 */
    .section-spacing {
      padding: 100px 0;
      position: relative;
    }

    .section-spacing-alt {
      background-color: #FFFFFF;
      padding: 100px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 56px;
    }

    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 600;
      font-size: 13px;
      padding: 5px 14px;
      border-radius: 20px;
      margin-bottom: 16px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
      line-height: 1.3;
    }

    .section-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 药丸徽章 */
    .pill-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(42, 75, 222, 0.1);
      color: var(--primary);
      padding: 6px 14px;
      border-radius: 50px;
      font-size: 13px;
      font-weight: 600;
      border: 1px solid rgba(42, 75, 222, 0.2);
    }

    .pulse-dot {
      width: 8px;
      height: 8px;
      background: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
      }
      70% {
        transform: scale(1);
        box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
      }
      100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
      }
    }

    /* 1. Hero 区域：自然有机柔光首屏，主张一句 + 成分要点 */
    .section-hero {
      position: relative;
      background: radial-gradient(circle at 85% 15%, rgba(112, 51, 255, 0.12), transparent 45%),
                  radial-gradient(circle at 15% 75%, rgba(42, 75, 222, 0.1), transparent 50%),
                  #F8FAFC;
      padding: 110px 0 120px;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 44px;
      font-weight: 800;
      line-height: 1.22;
      color: var(--text-main);
      margin: 20px 0 18px;
      letter-spacing: -1px;
    }

    .hero-content h1 span {
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 32px;
      max-width: 600px;
    }

    .hero-form-box {
      background: #FFFFFF;
      padding: 8px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      display: flex;
      max-width: 480px;
      border: 1px solid rgba(226, 232, 240, 0.9);
      margin-bottom: 24px;
    }

    .hero-form-box input {
      flex: 1;
      border: none;
      padding: 12px 18px;
      font-size: 14px;
      outline: none;
      color: var(--text-main);
    }

    .hero-form-box .btn {
      padding: 12px 26px;
      border-radius: 10px;
    }

    .hero-ingredients {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-top: 10px;
    }

    .ingredient-tag {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 500;
      color: #475569;
      background: rgba(255, 255, 255, 0.8);
      padding: 6px 14px;
      border-radius: 8px;
      border: 1px solid var(--border-color);
    }

    .ingredient-tag svg {
      width: 16px;
      height: 16px;
      color: var(--primary);
    }

    .hero-media-wrap {
      position: relative;
    }

    .hero-img-card {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.18);
      border: 4px solid #FFFFFF;
      position: relative;
    }

    .floating-chip {
      position: absolute;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(10px);
      padding: 12px 18px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      border: 1px solid rgba(255, 255, 255, 0.8);
      display: flex;
      align-items: center;
      gap: 12px;
      z-index: 10;
    }

    .chip-1 {
      top: -18px;
      right: 20px;
    }

    .chip-2 {
      bottom: -22px;
      left: 10px;
    }

    .chip-val {
      font-size: 18px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
    }

    .chip-lbl {
      font-size: 12px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 2. 品牌与定位总览 */
    .brand-intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }

    .brand-intro-text h3 {
      font-size: 26px;
      font-weight: 700;
      margin-bottom: 20px;
      line-height: 1.4;
      color: var(--text-main);
    }

    .brand-intro-text p {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 18px;
      line-height: 1.75;
    }

    .check-list-modern {
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .check-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 15px;
      color: #334155;
      font-weight: 500;
    }

    .check-item-icon {
      width: 22px;
      height: 22px;
      background: rgba(42, 75, 222, 0.12);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      flex-shrink: 0;
      margin-top: 2px;
    }

    /* 3. 核心优势区：6大网格 */
    .grid-6 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .advantage-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .advantage-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(42, 75, 222, 0.35);
    }

    .adv-icon {
      width: 54px;
      height: 54px;
      background: linear-gradient(135deg, rgba(42, 75, 222, 0.1), rgba(112, 51, 255, 0.15));
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      margin-bottom: 22px;
    }

    .advantage-card h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .advantage-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      flex: 1;
    }

    .adv-footer-link {
      margin-top: 20px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 4. 热门套件区：3张横向等高大卡 */
    .suites-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }

    .suite-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px 32px;
      display: flex;
      flex-direction: column;
      position: relative;
      transition: all 0.3s ease;
    }

    .suite-card.highlight {
      border: 2px solid var(--primary);
      box-shadow: 0 18px 45px -10px rgba(42, 75, 222, 0.2);
      transform: scale(1.03);
    }

    .suite-ribbon {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #FFFFFF;
      font-size: 12px;
      font-weight: 700;
      padding: 4px 18px;
      border-radius: 20px;
      box-shadow: 0 4px 10px rgba(42, 75, 222, 0.3);
    }

    .suite-name {
      font-size: 22px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .suite-target {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }

    .suite-price-box {
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 24px;
      margin-bottom: 24px;
    }

    .suite-price {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
    }

    .suite-price small {
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 400;
    }

    .suite-features {
      margin-bottom: 32px;
      flex: 1;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .suite-feat-item {
      font-size: 14px;
      color: #475569;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* 5. 深色沉浸式设计理念与架构区 */
    .section-dark-concept {
      background: var(--dark-bg);
      color: #FFFFFF;
      padding: 110px 0;
      position: relative;
    }

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

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

    .concept-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }

    .arch-nodes {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .arch-node-box {
      background: var(--dark-surface);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 22px 26px;
      transition: all 0.3s ease;
    }

    .arch-node-box:hover {
      border-color: var(--primary);
      background: rgba(30, 41, 59, 0.7);
    }

    .node-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 10px;
    }

    .node-title {
      font-size: 16px;
      font-weight: 700;
      color: #F1F5F9;
    }

    .node-spec {
      font-size: 12px;
      background: rgba(42, 75, 222, 0.2);
      color: #93C5FD;
      padding: 2px 10px;
      border-radius: 12px;
      border: 1px solid rgba(42, 75, 222, 0.3);
    }

    .node-desc {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.6;
    }

    .dark-concept-img {
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255, 255, 255, 0.12);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }

    /* 6. 多场景演示流与卖点连击区 */
    .scenario-tabs {
      display: flex;
      justify-content: center;
      gap: 12px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }

    .scenario-btn {
      padding: 10px 24px;
      border-radius: 50px;
      border: 1px solid var(--border-color);
      background: #FFFFFF;
      font-size: 14px;
      font-weight: 600;
      color: #475569;
      cursor: pointer;
      transition: all 0.25s ease;
    }

    .scenario-btn.active, .scenario-btn:hover {
      background: var(--primary);
      color: #FFFFFF;
      border-color: var(--primary);
      box-shadow: 0 4px 12px rgba(42, 75, 222, 0.25);
    }

    .scenario-box {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 40px;
      box-shadow: var(--shadow-sm);
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 48px;
      align-items: center;
    }

    .scenario-steps {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }

    .scenario-step-item {
      display: flex;
      gap: 16px;
    }

    .step-num {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
      flex-shrink: 0;
    }

    .step-text h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .step-text p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 7. 深度企业应用故事区 */
    .story-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-md);
    }

    .story-img-container {
      height: 100%;
      min-height:420px;
      position: relative;
    }

    .story-img-container img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .story-content {
      padding: 48px 48px 48px 0;
    }

    .story-badge {
      display: inline-block;
      background: rgba(245, 158, 11, 0.12);
      color: #D97706;
      font-size: 13px;
      font-weight: 700;
      padding: 4px 14px;
      border-radius: 6px;
      margin-bottom: 16px;
    }

    .story-content h3 {
      font-size: 24px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.35;
    }

    .story-content p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .story-metrics-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
    }

    .metric-item .val {
      font-size: 24px;
      font-weight: 800;
      color: var(--primary);
    }

    .metric-item .lbl {
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* 8. 关键数据统计与性能徽章条 */
    .section-stats-strip {
      background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
      color: #FFFFFF;
      padding: 64px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .stats-flex {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }

    .stat-node {
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .stat-number {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.1;
      background: linear-gradient(135deg, #60A5FA, #C084FC);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 8px;
    }

    .stat-title {
      font-size: 15px;
      font-weight: 600;
      color: #F8FAFC;
      margin-bottom: 4px;
    }

    .stat-detail {
      font-size: 13px;
      color: #94A3B8;
    }

    /* 9. 多维客户真实评价卡片区 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .testimonial-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }

    .stars-bar {
      color: #F59E0B;
      font-size: 14px;
      margin-bottom: 16px;
      display: flex;
      gap: 4px;
    }

    .quote-content {
      font-size: 14px;
      color: #334155;
      line-height: 1.7;
      margin-bottom: 24px;
      flex: 1;
    }

    .author-info {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #CBD5E1, #94A3B8);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #FFFFFF;
      font-size: 16px;
    }

    .author-meta .name {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }

    .author-meta .role {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 10. 行业洞察与动态内嵌区 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }

    .news-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }

    .news-img-box {
      height: 200px;
      overflow: hidden;
    }

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

    .news-card:hover .news-img-box img {
      transform: scale(1.05);
    }

    .news-body {
      padding: 26px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .news-tag {
      font-size: 12px;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 8px;
    }

    .news-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.45;
      margin-bottom: 12px;
    }

    .news-summary {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
      flex: 1;
    }

    .news-date {
      font-size: 12px;
      color: #94A3B8;
      border-top: 1px solid var(--border-color);
      padding-top: 14px;
    }

    /* 11. FAQ 手风琴区 */
    .faq-container {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.3s ease;
    }

    .faq-item.active {
      border-color: var(--primary);
      box-shadow: 0 4px 18px rgba(42, 75, 222, 0.08);
    }

    .faq-question {
      padding: 20px 24px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
    }

    .faq-icon-arrow {
      width: 20px;
      height: 20px;
      transition: transform 0.3s ease;
      color: var(--text-muted);
    }

    .faq-item.active .faq-icon-arrow {
      transform: rotate(180deg);
      color: var(--primary);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 14px;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 24px 22px;
    }

    /* 12. 企业级安全与合规保障条 */
    .security-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .security-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      align-items: flex-start;
      gap: 16px;
    }

    .sec-icon {
      width: 42px;
      height: 42px;
      border-radius: 10px;
      background: rgba(16, 185, 129, 0.1);
      color: #10B981;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      flex-shrink: 0;
    }

    .sec-text h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .sec-text p {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 13. 底部全宽强推转化区 */
    .section-final-cta {
      background: radial-gradient(circle at 50% 50%, #2A4BDE 0%, #172554 100%);
      color: #FFFFFF;
      padding: 96px 0;
      text-align: center;
    }

    .final-cta-box {
      max-width: 680px;
      margin: 0 auto;
    }

    .final-cta-box h2 {
      font-size: 34px;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.25;
    }

    .final-cta-box p {
      font-size: 16px;
      color: #BFDBFE;
      margin-bottom: 36px;
      line-height: 1.6;
    }

    .final-form {
      display: flex;
      max-width: 480px;
      margin: 0 auto;
      background: #FFFFFF;
      padding: 6px;
      border-radius: var(--radius-md);
      box-shadow: 0 16px 32px rgba(0, 0, 0, 0.25);
    }

    .final-form input {
      flex: 1;
      border: none;
      padding: 12px 18px;
      font-size: 14px;
      outline: none;
      color: var(--text-main);
      border-radius: var(--radius-sm);
    }

    .final-form .btn {
      padding: 12px 24px;
    }

    /* 底部固定转化条 */
    .sticky-floating-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 64px;
      background: rgba(15, 23, 42, 0.94);
      backdrop-filter: blur(12px);
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      z-index: 999;
      display: flex;
      align-items: center;
      transform: translateY(100%);
      transition: transform 0.35s ease;
      padding-bottom: env(safe-area-inset-bottom);
    }

    .sticky-floating-bar.visible {
      transform: translateY(0);
    }

    .sticky-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }

    .sticky-info {
      display: flex;
      align-items: center;
      gap: 14px;
      color: #FFFFFF;
    }

    .sticky-info .txt {
      font-size: 14px;
      font-weight: 600;
    }

    .sticky-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    /* 页脚 */
    .site-footer {
      background: #0B1120;
      color: #94A3B8;
      padding: 80px 0 40px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 14px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 56px;
    }

    .footer-brand h4 {
      font-size: 20px;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 14px;
    }

    .footer-brand p {
      font-size: 13px;
      line-height: 1.7;
      color: #64748B;
      max-width: 320px;
      margin-bottom: 20px;
    }

    .footer-col h5 {
      font-size: 15px;
      font-weight: 700;
      color: #F1F5F9;
      margin-bottom: 18px;
    }

    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      color: #94A3B8;
      font-size: 13px;
    }

    .footer-links a:hover {
      color: #FFFFFF;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 32px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: #64748B;
      flex-wrap: wrap;
      gap: 16px;
    }

    .footer-bottom-links a {
      color: #64748B;
      margin-left: 16px;
    }
    .footer-bottom-links a:hover {
      color: #94A3B8;
    }

    /* 移动端菜单抽屉 */
    .mobile-drawer {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100vh;
      background: #FFFFFF;
      z-index: 2000;
      padding: 30px 24px;
      display: flex;
      flex-direction: column;
      transform: translateX(-100%);
      transition: transform 0.3s ease;
    }

    .mobile-drawer.open {
      transform: translateX(0);
    }

    .drawer-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 32px;
    }

    .drawer-close {
      background: none;
      border: none;
      font-size: 28px;
      cursor: pointer;
      color: var(--text-main);
    }

    .drawer-links {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .drawer-links a {
      font-size: 18px;
      font-weight: 600;
      color: var(--text-main);
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .brand-intro-grid, .concept-grid, .scenario-box, .story-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .grid-6 {
        grid-template-columns: repeat(2, 1fr);
      }
      .suites-grid, .testimonial-grid, .news-grid {
        grid-template-columns: 1fr;
        max-width: 580px;
        margin-left: auto;
        margin-right: auto;
      }
      .suite-card.highlight {
        transform: none;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
      }
      .story-content {
        padding: 0 32px 32px;
      }
      .security-bar-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-flex {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu, .nav-actions .btn-secondary {
        display: none;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-content h1 {
        font-size: 32px;
      }
      .grid-6 {
        grid-template-columns: 1fr;
      }
      .security-bar-grid {
        grid-template-columns: 1fr;
      }
      .stats-flex {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .section-spacing, .section-spacing-alt, .section-hero, .section-dark-concept {
        padding: 60px 0;
      }
      .sticky-floating-bar {
        height: auto;
        padding: 12px 16px;
      }
      .sticky-bar-inner {
        flex-direction: column;
        gap: 8px;
        text-align: center;
      }
      .hero-form-box, .final-form {
        flex-direction: column;
      }
      .hero-form-box .btn, .final-form .btn {
        width: 100%;
        margin-top: 8px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }