/* roulang page: index */
:root {
      --primary: #0F52BA;
      --primary-dark: #0A3A85;
      --primary-light: #EEF4FF;
      --accent: #FF5500;
      --accent-hover: #E04B00;
      --success: #059669;
      --bg-base: #F4F6F9;
      --bg-card: #FFFFFF;
      --bg-dark: #111827;
      --bg-dark-card: #1F2937;
      --text-main: #0F172A;
      --text-body: #1E293B;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --border-dark: #374151;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
      --shadow-lg: 0 12px 32px -4px rgba(15, 23, 42, 0.12);
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
    }

    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      padding: 0;
      font-family: var(--font-stack);
      color: var(--text-body);
      background-color: var(--bg-base);
      line-height: 1.6;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3, h4, h5, h6 {
      color: var(--text-main);
      font-weight: 700;
      line-height: 1.35;
      margin-top: 0;
    }
    h1 { font-size: 2.35rem; }
    h2 { font-size: 1.95rem; margin-bottom: 0.75rem; }
    h3 { font-size: 1.35rem; }
    p { margin-bottom: 1rem; color: var(--text-body); }
    a { color: var(--primary); text-decoration: none; transition: all 0.25s ease; }
    a:hover { color: var(--accent); }

    /* 全局结构规范 */
    .site-container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.25rem;
    }
    .sp-section {
      padding: 5rem 0;
      position: relative;
    }
    .sp-section--white { background-color: #FFFFFF; }
    .sp-section--light { background-color: var(--bg-base); }
    .sp-section--dark { background-color: var(--bg-dark); color: #F9FAFB; }
    .sp-section--dark h2, .sp-section--dark h3, .sp-section--dark p { color: #F9FAFB; }
    .sp-section--dark .text-muted { color: #9CA3AF; }

    .section-head {
      margin-bottom: 3.5rem;
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-head .subhead {
      color: var(--text-muted);
      font-size: 1.05rem;
      line-height: 1.7;
      margin-top: 0.75rem;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--primary);
      background: var(--primary-light);
      padding: 0.35rem 0.85rem;
      border-radius: 9999px;
      margin-bottom: 0.85rem;
    }
    .sp-section--dark .section-tag {
      background: rgba(15, 82, 186, 0.3);
      color: #93C5FD;
      border: 1px solid rgba(147, 197, 253, 0.3);
    }

    /* 按钮通用 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      font-weight: 600;
      padding: 0.85rem 1.85rem;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      min-height: 46px;
    }
    .btn-primary {
      background: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(15, 82, 186, 0.25);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      color: #FFFFFF;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(15, 82, 186, 0.35);
    }
    .btn-accent {
      background: var(--accent);
      color: #FFFFFF;
      box-shadow: 0 4px 12px rgba(255, 85, 0, 0.25);
    }
    .btn-accent:hover {
      background: var(--accent-hover);
      color: #FFFFFF;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(255, 85, 0, 0.35);
    }
    .btn-outline {
      background: transparent;
      border-color: var(--primary);
      color: var(--primary);
    }
    .btn-outline:hover {
      background: var(--primary-light);
      color: var(--primary-dark);
    }

    /* 顶部双行导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: #FFFFFF;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }
    .header-topbar {
      background: #0B132B;
      color: #E2E8F0;
      font-size: 0.825rem;
      padding: 0.45rem 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .header-topbar a { color: #94A3B8; }
    .header-topbar a:hover { color: #FFFFFF; }
    .header-main {
      padding: 0.95rem 0;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.65rem;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
    }
    .brand-logo svg {
      width: 32px;
      height: 32px;
      color: var(--primary);
    }
    .nav-links {
      display: flex;
      list-style: none;
      margin: 0;
      padding: 0;
      gap: 1.5rem;
    }
    .nav-links li a {
      color: var(--text-body);
      font-weight: 500;
      font-size: 0.975rem;
      padding: 0.4rem 0.2rem;
      border-bottom: 2px solid transparent;
    }
    .nav-links li a:hover, .nav-links li.active a {
      color: var(--primary);
      border-bottom-color: var(--primary);
    }

    /* 进度步骤导航条 */
    .step-subnav {
      background: #F8FAFC;
      border-bottom: 1px solid var(--border-color);
      padding: 0.65rem 0;
    }
    .step-list {
      display: flex;
      align-items: center;
      justify-content: space-between;
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .step-item {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.875rem;
      color: var(--text-muted);
      cursor: pointer;
      text-decoration: none;
      transition: all 0.2s;
    }
    .step-item:hover { color: var(--primary); }
    .step-badge {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: #E2E8F0;
      color: var(--text-body);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: 700;
    }
    .step-item:hover .step-badge {
      background: var(--primary);
      color: #FFF;
    }
    .step-arrow { color: #CBD5E1; font-size: 0.75rem; }

    /* 板块 1: Hero 优惠券墙入口大屏 */
    .hero-section {
      background: linear-gradient(135deg, rgba(15, 82, 186, 0.94), rgba(11, 19, 43, 0.96)), url('/assets/images/60d7adce4e1d928b.jpg') center/cover no-repeat;
      color: #FFFFFF;
      padding: 5rem 0 6rem;
      position: relative;
    }
    .hero-content h1 {
      color: #FFFFFF;
      font-size: 2.75rem;
      margin-bottom: 1.25rem;
      letter-spacing: -0.02em;
    }
    .hero-desc {
      font-size: 1.125rem;
      line-height: 1.8;
      color: #E2E8F0;
      margin-bottom: 2rem;
      max-width: 680px;
    }
    /* 优惠券墙组件 */
    .voucher-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 2rem;
      color: var(--text-body);
      box-shadow: var(--shadow-lg);
      border: 2px dashed #93C5FD;
      position: relative;
    }
    .voucher-tag {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--accent);
      color: #FFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 0.25rem 0.75rem;
      border-radius: 999px;
    }
    .voucher-val {
      font-size: 2.8rem;
      font-weight: 900;
      color: var(--accent);
      line-height: 1;
      display: flex;
      align-items: baseline;
      gap: 0.25rem;
    }
    .voucher-val span { font-size: 1.15rem; font-weight: 600; }
    .voucher-meta { margin: 1rem 0 1.5rem; font-size: 0.9rem; color: var(--text-muted); }

    /* 通用卡片容器 */
    .sp-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      height: 100%;
      position: relative;
    }
    .sp-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #CBD5E1;
    }

    /* 板块 2: 优惠阶梯 */
    .tier-card {
      border-top: 4px solid var(--primary);
      text-align: center;
    }
    .tier-scale {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--text-main);
      margin: 0.5rem 0;
    }
    .tier-sub {
      color: var(--accent);
      font-weight: 600;
      font-size: 0.95rem;
      margin-bottom: 1.25rem;
    }
    .tier-features {
      list-style: none;
      padding: 0;
      margin: 0 0 1.5rem;
      text-align: left;
      font-size: 0.9rem;
      color: var(--text-body);
    }
    .tier-features li {
      padding: 0.4rem 0;
      border-bottom: 1px dashed #F1F5F9;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .tier-features li::before {
      content: "✓";
      color: var(--success);
      font-weight: 900;
    }

    /* 板块 3: 套餐对比 */
    .package-grid .sp-card.highlight {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-md);
    }
    .package-badge {
      display: inline-block;
      background: var(--primary);
      color: #FFF;
      font-size: 0.75rem;
      padding: 0.2rem 0.6rem;
      border-radius: 4px;
      margin-bottom: 0.5rem;
    }

    /* 板块 4: 限时入口 */
    .countdown-bar {
      background: linear-gradient(90deg, #0F172A, #1E293B);
      border-radius: var(--radius-lg);
      padding: 2.5rem;
      color: #FFF;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 1.5rem;
    }
    .timer-boxes {
      display: flex;
      gap: 0.75rem;
    }
    .timer-unit {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-sm);
      padding: 0.6rem 0.9rem;
      text-align: center;
      min-width: 65px;
    }
    .timer-num {
      font-size: 1.5rem;
      font-weight: 800;
      line-height: 1;
      color: #F8FAFC;
    }
    .timer-lbl { font-size: 0.7rem; color: #94A3B8; margin-top: 0.25rem; }

    /* 板块 5: 爆款清单 (场景解决方案) */
    .product-img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      border-radius: var(--radius-sm);
      margin-bottom: 1.25rem;
    }

    /* 板块 6: 评价墙 */
    .review-avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      object-fit: cover;
      border: 2px solid #E2E8F0;
    }
    .review-stars { color: #F59E0B; margin-bottom: 0.5rem; font-size: 0.9rem; }
    .review-quote {
      font-size: 0.95rem;
      line-height: 1.6;
      color: var(--text-body);
      margin-bottom: 1.25rem;
      font-style: italic;
    }

    /* 板块 7: 保障图标条 */
    .trust-strip {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 1.5rem;
    }
    .trust-item {
      display: flex;
      align-items: flex-start;
      gap: 1rem;
      background: #FFF;
      padding: 1.25rem;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .trust-icon {
      flex-shrink: 0;
      width: 44px;
      height: 44px;
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
    }

    /* 板块 8: 资讯列表 */
    .news-card {
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .news-img {
      height: 180px;
      width: 100%;
      object-fit: cover;
      border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    }
    .news-body {
      padding: 1.5rem;
      background: #FFF;
      border: 1px solid var(--border-color);
      border-top: none;
      border-radius: 0 0 var(--radius-sm) var(--radius-sm);
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-date { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0.5rem; }

    /* 板块 9: 结果对比 (传统 vs 数字化) */
    .compare-table {
      width: 100%;
      background: #FFF;
      border-radius: var(--radius-md);
      overflow: hidden;
      border-collapse: collapse;
      box-shadow: var(--shadow-sm);
    }
    .compare-table th, .compare-table td {
      padding: 1.25rem;
      text-align: left;
      border-bottom: 1px solid var(--border-color);
    }
    .compare-table th { background: #0F172A; color: #FFF; font-weight: 600; }
    .compare-table tr:last-child td { border-bottom: none; }
    .compare-bad { color: #DC2626; font-weight: 600; }
    .compare-good { color: var(--success); font-weight: 700; }

    /* 板块 10: 里程碑推进轴 */
    .timeline-wrap {
      position: relative;
      max-width: 900px;
      margin: 0 auto;
    }
    .timeline-wrap::before {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      left: 20px;
      width: 3px;
      background: #CBD5E1;
    }
    .timeline-step {
      position: relative;
      margin-bottom: 2rem;
      padding-left: 50px;
    }
    .timeline-dot {
      position: absolute;
      left: 12px;
      top: 4px;
      width: 18px;
      height: 18px;
      background: var(--primary);
      border: 3px solid #FFF;
      border-radius: 50%;
      box-shadow: 0 0 0 2px var(--primary);
    }

    /* 板块 11: 数字化指标看板 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 1.5rem;
    }
    .metric-card {
      background: #FFF;
      border-radius: var(--radius-md);
      padding: 1.75rem;
      border-bottom: 4px solid var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .metric-num {
      font-size: 2.5rem;
      font-weight: 800;
      font-family: monospace, sans-serif;
      color: var(--primary);
      line-height: 1.2;
    }
    .metric-desc { color: var(--text-muted); font-size: 0.9rem; margin-top: 0.5rem; }

    /* 板块 12: 裁判与调度协同体系 */
    .dark-card {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 2rem;
    }

    /* 板块 13: 常见痛点快速解答 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 1.5rem;
    }
    .pain-card {
      background: #FFF;
      border-radius: var(--radius-md);
      padding: 1.75rem;
      border-left: 4px solid var(--accent);
    }

    /* 板块 14: FAQ 手风琴交互 */
    .faq-item {
      background: #FFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 1rem;
      overflow: hidden;
    }
    .faq-title {
      padding: 1.25rem;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #FFF;
      user-select: none;
    }
    .faq-title:hover { color: var(--primary); }
    .faq-content {
      padding: 0 1.25rem 1.25rem;
      color: var(--text-body);
      font-size: 0.95rem;
      line-height: 1.7;
      display: none;
    }
    .faq-item.active .faq-content { display: block; }
    .faq-item.active .faq-title { color: var(--primary); }

    /* 板块 15: 加购引导与转化表单 */
    .form-container {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 3rem 2.5rem;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
      max-width: 860px;
      margin: 0 auto;
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.25rem;
      margin-bottom: 1.25rem;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      text-align: left;
    }
    .form-group label {
      font-weight: 600;
      font-size: 0.9rem;
      margin-bottom: 0.4rem;
      color: var(--text-main);
    }
    .form-control {
      border: 1px solid var(--border-color);
      padding: 0.75rem 1rem;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      transition: all 0.2s;
      outline: none;
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(15, 82, 186, 0.15);
    }

    /* 页脚 */
    .site-footer {
      background: #0B111E;
      color: #94A3B8;
      padding: 4.5rem 0 2.5rem;
      font-size: 0.9rem;
      border-top: 1px solid #1E293B;
    }
    .footer-col h4 {
      color: #F8FAFC;
      font-size: 1.05rem;
      margin-bottom: 1.25rem;
    }
    .footer-col ul {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-col ul li {
      margin-bottom: 0.65rem;
    }
    .footer-col ul li a {
      color: #94A3B8;
    }
    .footer-col ul li a:hover {
      color: #FFF;
    }
    .footer-bottom {
      margin-top: 3.5rem;
      padding-top: 2rem;
      border-top: 1px solid #1E293B;
      text-align: center;
      font-size: 0.85rem;
    }

    /* 响应式断点 */
    @media screen and (max-width: 1024px) {
      h1 { font-size: 2.15rem; }
      h2 { font-size: 1.65rem; }
      .nav-links { display: none; }
    }
    @media screen and (max-width: 768px) {
      .form-row { grid-template-columns: 1fr; }
      .hero-section { padding: 3.5rem 0 4rem; }
      .voucher-card { margin-top: 2rem; }
      .countdown-bar { flex-direction: column; text-align: center; }
      .timer-boxes { justify-content: center; }
      .timeline-wrap::before { left: 10px; }
      .timeline-step { padding-left: 35px; }
      .timeline-dot { left: 2px; }
    }