/* roulang page: index */
:root {
      --brand-dark: #0f172a;
      --brand-indigo: #1e293b;
      --brand-primary: #4f46e5;
      --brand-primary-light: #6366f1;
      --brand-accent: #0d9488;
      --brand-accent-glow: #14b8a6;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --text-light: #f8fafc;
      --bg-light: #f8fafc;
      --bg-white: #ffffff;
      --border-color: rgba(226, 232, 240, 0.9);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 20px 30px -10px rgba(79, 70, 229, 0.15);
      --transition: all 0.28s ease-in-out;
    }

    * { box-sizing: border-box; }
    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.65;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a { text-decoration: none; color: inherit; transition: var(--transition); }
    a:hover { color: var(--brand-primary); }
    img { max-width: 100%; height: auto; display: block; }
    h1, h2, h3, h4, h5 { font-weight: 700; color: inherit; line-height: 1.25; margin: 0 0 12px 0; }
    p { margin: 0 0 16px 0; color: var(--text-muted); }

    /* 通用容器与栅格补强 */
    .site-container {
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 20px;
    }
    .section-wrap {
      padding: 80px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px;
    }
    .section-header h2 {
      font-size: 32px;
      color: var(--brand-indigo);
    }
    .section-header p {
      font-size: 16px;
      line-height: 1.7;
    }
    .badge-pill {
      display: inline-block;
      padding: 5px 14px;
      background: rgba(79, 70, 229, 0.1);
      color: var(--brand-primary);
      font-size: 13px;
      font-weight: 600;
      border-radius: 999px;
      margin-bottom: 14px;
      border: 1px solid rgba(79, 70, 229, 0.15);
    }
    .badge-accent {
      background: rgba(13, 148, 136, 0.12);
      color: var(--brand-accent);
      border-color: rgba(13, 148, 136, 0.2);
    }

    /* 按钮组件 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 26px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      line-height: 1;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--brand-primary) 0%, #7c3aed 100%);
      color: #fff;
      box-shadow: 0 8px 18px rgba(79, 70, 229, 0.3);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, #4338ca 0%, #6d28d9 100%);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 12px 22px rgba(79, 70, 229, 0.4);
    }
    .btn-outline {
      background: #fff;
      color: var(--brand-indigo);
      border-color: #cbd5e1;
    }
    .btn-outline:hover {
      background: #f1f5f9;
      border-color: var(--brand-primary);
      color: var(--brand-primary);
    }

    /* 顶部促销栏 + 主导航 */
    .top-promo-bar {
      background: #090d16;
      color: #94a3b8;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .promo-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .promo-links a {
      color: #cbd5e1;
      margin-left: 18px;
      font-size: 12px;
    }
    .promo-links a:hover { color: #fff; }
    
    .main-nav-bar {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      position: sticky;
      top: 0;
      z-index: 999;
      box-shadow: 0 1px 3px rgba(0,0,0,0.05);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      height: 72px;
      display: flex;
      align-items: center;
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .nav-logo {
      font-size: 20px;
      font-weight: 800;
      color: var(--brand-indigo);
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .nav-logo-mark {
      width: 32px;
      height: 32px;
      background: linear-gradient(135deg, var(--brand-primary), var(--brand-accent));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 16px;
      font-weight: 900;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      margin: 0;
      padding: 0;
      gap: 26px;
    }
    .nav-menu a {
      font-size: 15px;
      font-weight: 500;
      color: #475569;
    }
    .nav-menu a:hover {
      color: var(--brand-primary);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .mobile-nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--brand-indigo);
    }

    /* 1. Hero 杂志分栏首屏 */
    #home {
      padding: 70px 0 90px;
      background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.08), transparent 40%),
                  radial-gradient(circle at bottom left, rgba(13, 148, 136, 0.05), transparent 40%),
                  #ffffff;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-magazine-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 50px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 42px;
      line-height: 1.25;
      color: var(--brand-dark);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-desc {
      font-size: 16px;
      line-height: 1.75;
      color: #475569;
      margin-bottom: 30px;
    }
    .hero-cta-group {
      display: flex;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-meta-strip {
      display: flex;
      gap: 24px;
      padding-top: 24px;
      border-top: 1px solid #f1f5f9;
    }
    .hero-meta-item strong {
      display: block;
      font-size: 20px;
      color: var(--brand-indigo);
    }
    .hero-meta-item span {
      font-size: 13px;
      color: var(--text-muted);
    }
    .hero-featured-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 16px;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(226, 232, 240, 0.9);
      position: relative;
    }
    .hero-card-img-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      position: relative;
    }
    .hero-card-badge {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(15, 23, 42, 0.8);
      backdrop-filter: blur(6px);
      color: #fff;
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 6px;
    }
    .hero-card-content {
      padding: 20px 8px 10px;
    }
    .hero-card-content h3 {
      font-size: 20px;
      margin-bottom: 8px;
    }

    /* 2. 全球/全域覆盖与标准底座 */
    #coverage {
      background: #ffffff;
      border-bottom: 1px solid #f1f5f9;
    }
    .coverage-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .coverage-card {
      padding: 28px 24px;
      background: #f8fafc;
      border-radius: var(--radius-md);
      border: 1px solid #e2e8f0;
      transition: var(--transition);
    }
    .coverage-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      background: #fff;
    }
    .coverage-card h4 {
      font-size: 18px;
      color: var(--brand-indigo);
      margin-bottom: 8px;
    }

    /* 3. 场景卡板块 */
    #scenarios {
      background: #f8fafc;
    }
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
    }
    .scenario-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .scenario-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-3px);
    }
    .scenario-card-body {
      padding: 28px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .scenario-tags {
      display: flex;
      gap: 8px;
      margin-bottom: 14px;
    }
    .scenario-tags span {
      font-size: 12px;
      background: #eef2ff;
      color: var(--brand-primary);
      padding: 3px 8px;
      border-radius: 4px;
    }

    /* 4. 本地化与部署能力 */
    #localization {
      background: #ffffff;
    }
    .loc-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .loc-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .loc-item {
      display: flex;
      gap: 16px;
    }
    .loc-icon-dot {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: rgba(13, 148, 136, 0.12);
      color: var(--brand-accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      flex-shrink: 0;
    }
    .loc-item-text h4 {
      font-size: 17px;
      margin-bottom: 4px;
    }

    /* 5. 核心技术优势矩阵 */
    #features {
      background: #f1f5f9;
    }
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: #ffffff;
      padding: 30px;
      border-radius: var(--radius-md);
      border: 1px solid #e2e8f0;
      transition: var(--transition);
    }
    .feature-card:hover {
      border-color: var(--brand-primary-light);
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .feature-icon-bar {
      font-size: 28px;
      margin-bottom: 16px;
      color: var(--brand-primary);
    }
    .feature-card h3 {
      font-size: 19px;
      margin-bottom: 10px;
      color: var(--brand-indigo);
    }

    /* 6. 接待硬件与终端体系 */
    #hardware {
      background: #ffffff;
    }
    .hardware-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .hardware-card {
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-lg);
      padding: 24px;
      background: #fff;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .hardware-card:hover {
      box-shadow: var(--shadow-md);
    }
    .hardware-img-wrap {
      border-radius: var(--radius-sm);
      overflow: hidden;
      margin-bottom: 20px;
      background: #f8fafc;
    }
    .hw-specs {
      font-size: 13px;
      color: var(--text-muted);
      border-top: 1px dashed #e2e8f0;
      padding-top: 14px;
      margin-top: 14px;
    }

    /* 7. 标杆客户案例 */
    #cases {
      background: #f8fafc;
    }
    .case-container {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid #e2e8f0;
      box-shadow: var(--shadow-md);
    }
    .case-left-img {
      position: relative;
      min-height: 380px;
    }
    .case-left-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-right-content {
      padding: 40px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .case-metric-box {
      display: flex;
      gap: 24px;
      margin: 20px 0;
      padding: 16px;
      background: #f8fafc;
      border-radius: var(--radius-sm);
    }
    .case-metric-box div strong {
      display: block;
      font-size: 24px;
      color: var(--brand-primary);
    }

    /* 8. 关键性能指标数据条 */
    #metrics {
      background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
      color: #ffffff;
      padding: 50px 0;
    }
    .metrics-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-bar-item strong {
      display: block;
      font-size: 42px;
      font-weight: 800;
      color: #38bdf8;
      margin-bottom: 6px;
      letter-spacing: -1px;
    }
    .metric-bar-item span {
      font-size: 14px;
      color: #94a3b8;
    }

    /* 9. 深色数据隐私与安全板块 */
    #security {
      background: #090d16;
      color: #f8fafc;
    }
    .sec-header h2 { color: #fff; }
    .sec-header p { color: #94a3b8; }
    .sec-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .sec-card {
      background: #111827;
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 28px;
      border-radius: var(--radius-md);
      transition: var(--transition);
    }
    .sec-card:hover {
      border-color: var(--brand-accent);
      transform: translateY(-3px);
    }
    .sec-card h3 {
      font-size: 18px;
      color: #f1f5f9;
      margin-bottom: 10px;
    }
    .sec-card p {
      color: #94a3b8;
      font-size: 14px;
    }

    /* 10. 行业动态与资讯证据 */
    #news {
      background: #ffffff;
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .news-card {
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-body {
      padding: 22px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }
    .news-date {
      font-size: 12px;
      color: #94a3b8;
      margin-bottom: 8px;
    }
    .news-body h4 {
      font-size: 17px;
      margin-bottom: 10px;
    }
    .news-body p {
      font-size: 14px;
      flex-grow: 1;
    }

    /* 11. 常见疑虑拆解 FAQ */
    #faq {
      background: #f8fafc;
    }
    .faq-accordion-list {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 24px;
      font-weight: 700;
      font-size: 16px;
      color: var(--brand-indigo);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #fff;
    }
    .faq-answer {
      padding: 0 24px 20px;
      color: #64748b;
      font-size: 15px;
      line-height: 1.7;
    }

    /* 12. 全流程保障与兜底承诺条 */
    #guarantee {
      background: #ffffff;
      border-top: 1px solid #e2e8f0;
      padding: 45px 0;
    }
    .guarantee-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      align-items: center;
    }
    .guarantee-item {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .guarantee-icon {
      width: 44px;
      height: 44px;
      background: rgba(79, 70, 229, 0.08);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      color: var(--brand-primary);
      flex-shrink: 0;
    }
    .guarantee-text h4 {
      font-size: 15px;
      margin: 0 0 2px 0;
    }
    .guarantee-text p {
      font-size: 12px;
      margin: 0;
      color: var(--text-muted);
    }

    /* 底部预约收口行动区 */
    .pre-footer-cta {
      background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
      color: #fff;
      padding: 70px 0;
      text-align: center;
    }
    .cta-form-box {
      max-width: 580px;
      margin: 30px auto 0;
      display: flex;
      gap: 12px;
    }
    .cta-input {
      flex: 1;
      height: 48px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(255, 255, 255, 0.2);
      background: rgba(255, 255, 255, 0.1);
      color: #fff;
      padding: 0 16px;
      font-size: 15px;
    }
    .cta-input::placeholder { color: #94a3b8; }
    .cta-input:focus {
      outline: none;
      background: rgba(255, 255, 255, 0.18);
      border-color: #38bdf8;
    }

    /* 底部综合页脚 */
    .main-footer {
      background: #090d16;
      color: #94a3b8;
      padding: 60px 0 30px;
      font-size: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-logo {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }
    .footer-col h5 {
      color: #fff;
      font-size: 15px;
      margin-bottom: 18px;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover { color: #fff; }
    .footer-bottom-line {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
    }

    /* 移动端浮动转化条 */
    .mobile-sticky-bar {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: #ffffff;
      border-top: 1px solid #e2e8f0;
      padding: 10px 16px;
      z-index: 1000;
      box-shadow: 0 -4px 10px rgba(0, 0, 0, 0.06);
    }
    .mobile-sticky-inner {
      display: flex;
      gap: 10px;
    }
    .mobile-sticky-inner .btn {
      flex: 1;
      padding: 10px;
      font-size: 14px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-magazine-grid { grid-template-columns: 1fr; gap: 36px; }
      .coverage-grid { grid-template-columns: repeat(2, 1fr); }
      .features-grid { grid-template-columns: repeat(2, 1fr); }
      .hardware-grid { grid-template-columns: repeat(2, 1fr); }
      .sec-grid { grid-template-columns: repeat(2, 1fr); }
      .guarantee-bar { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .section-wrap { padding: 50px 0; }
      .top-promo-bar { display: none; }
      .nav-menu, .nav-actions { display: none; }
      .mobile-nav-toggle { display: block; }
      .hero-h1 { font-size: 30px; }
      .scenario-grid { grid-template-columns: 1fr; }
      .loc-grid { grid-template-columns: 1fr; }
      .case-container { grid-template-columns: 1fr; }
      .metrics-bar-grid { grid-template-columns: repeat(2, 1fr); gap: 30px 16px; }
      .sec-grid { grid-template-columns: 1fr; }
      .news-grid { grid-template-columns: 1fr; }
      .hardware-grid { grid-template-columns: 1fr; }
      .features-grid { grid-template-columns: 1fr; }
      .guarantee-bar { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .cta-form-box { flex-direction: column; }
      .mobile-sticky-bar { display: block; }
      body { padding-bottom: 60px; }
      .footer-bottom-line { flex-direction: column; gap: 10px; text-align: center; }
    }