/* roulang page: index */
:root {
      --primary: #1E40AF;
      --primary-dark: #1E3A8A;
      --primary-light: #3B82F6;
      --accent: #0284C7;
      --teal: #0D9488;
      --teal-light: #CCFBF1;
      --bg-page: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-slate: #0F172A;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
      --card-shadow-hover: 0 12px 28px -4px rgba(15, 23, 42, 0.12);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --container-width: 1240px;
      --font-stack: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

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

    body {
      font-family: var(--font-stack);
      background-color: var(--bg-page);
      color: var(--text-body);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

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

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
    }

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

    /* 顶部信息栏与主导航 */
    .top-bar {
      background-color: #0F172A;
      color: #94A3B8;
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .top-bar-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .top-bar-highlight {
      color: #38BDF8;
    }

    .site-header {
      background-color: #FFFFFF;
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: 0 2px 12px rgba(15, 23, 42, 0.06);
      transition: background-color 0.3s;
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .site-logo {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .site-logo-icon {
      width: 40px;
      height: 40px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 700;
      font-size: 20px;
    }
    .site-logo-text {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .site-logo-tag {
      font-size: 11px;
      color: var(--teal);
      background-color: var(--teal-light);
      padding: 2px 6px;
      border-radius: 4px;
      font-weight: 600;
      margin-left: 6px;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-item a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-body);
      position: relative;
      padding: 6px 0;
    }
    .nav-item a:hover {
      color: var(--primary);
    }
    .nav-item a::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background-color: var(--primary);
      transition: width 0.25s ease;
    }
    .nav-item a:hover::after {
      width: 100%;
    }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      border-radius: var(--radius-md);
      transition: all 0.25s ease;
      cursor: pointer;
      text-align: center;
      white-space: nowrap;
      min-height: 44px;
      padding: 0 24px;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #FFFFFF;
      border: 1px solid var(--primary);
    }
    .btn-primary:hover {
      background-color: var(--primary-dark);
      box-shadow: 0 6px 16px rgba(30, 64, 175, 0.25);
      transform: translateY(-1px);
    }
    .btn-accent {
      background-color: var(--accent);
      color: #FFFFFF;
      border: 1px solid var(--accent);
    }
    .btn-accent:hover {
      background-color: #0369A1;
      transform: translateY(-1px);
    }
    .btn-outline {
      background-color: transparent;
      color: var(--primary);
      border: 1.5px solid var(--primary);
    }
    .btn-outline:hover {
      background-color: rgba(30, 64, 175, 0.05);
      transform: translateY(-1px);
    }
    .btn-white {
      background-color: #FFFFFF;
      color: var(--primary);
      border: 1px solid #FFFFFF;
    }
    .btn-white:hover {
      background-color: #F1F5F9;
      transform: translateY(-1px);
    }

    /* 移动端菜单切换按钮 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-main);
      margin: 5px 0;
      transition: all 0.3s;
    }

    /* 通用 Section 结构 */
    .section {
      padding: 90px 0;
      position: relative;
    }
    .section-alt {
      background-color: #FFFFFF;
    }
    .section-dark {
      background-color: var(--bg-slate);
      color: #F8FAFC;
    }
    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 54px;
    }
    .section-subtitle {
      font-size: 13px;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 12px;
      display: inline-block;
      background-color: rgba(2, 132, 199, 0.08);
      padding: 4px 14px;
      border-radius: 99px;
    }
    .section-dark .section-subtitle {
      background-color: rgba(255, 255, 255, 0.1);
      color: #38BDF8;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 18px;
    }
    .section-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .section-dark .section-desc {
      color: #94A3B8;
    }

    /* 基础卡片 */
    .card {
      background-color: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--card-shadow);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card:hover {
      box-shadow: var(--card-shadow-hover);
      transform: translateY(-4px);
      border-color: #CBD5E1;
    }

    /* 板块一：Hero 斜切与权益兑换券墙 */
    .hero-section {
      position: relative;
      background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 50%, #0F172A 100%);
      color: #FFFFFF;
      padding: 100px 0 140px;
      overflow: hidden;
      clip-path: polygon(0 0, 100% 0, 100% 93%, 0 100%);
    }
    .hero-bg-overlay {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      opacity: 0.18;
      background-image: url('/assets/images/ec7d19b063a1556e.webp');
      background-size: cover;
      background-position: center;
      mix-blend-mode: overlay;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background-color: rgba(255, 255, 255, 0.12);
      backdrop-filter: blur(8px);
      border-radius: 99px;
      font-size: 13px;
      color: #38BDF8;
      border: 1px solid rgba(255, 255, 255, 0.15);
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.25;
      color: #FFFFFF;
      margin-bottom: 22px;
      letter-spacing: -0.5px;
    }
    .hero-text {
      font-size: 16px;
      line-height: 1.8;
      color: #CBD5E1;
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* 优惠券墙入口样式（蓝图硬性） */
    .coupon-wall {
      background: rgba(255, 255, 255, 0.08);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.16);
      border-radius: var(--radius-xl);
      padding: 30px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    }
    .coupon-card-main {
      background: linear-gradient(135deg, #FFFFFF 0%, #F8FAFC 100%);
      border-radius: var(--radius-md);
      padding: 24px;
      color: var(--text-main);
      position: relative;
      border-left: 6px solid var(--teal);
      box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
      margin-bottom: 16px;
    }
    .coupon-top {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      margin-bottom: 12px;
    }
    .coupon-tag {
      font-size: 11px;
      font-weight: 700;
      color: #FFFFFF;
      background-color: var(--teal);
      padding: 3px 8px;
      border-radius: 4px;
    }
    .coupon-val {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
    }
    .coupon-val span {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      margin-left: 4px;
    }
    .coupon-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .coupon-sub {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 16px;
    }
    .coupon-sub-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .coupon-sub-item {
      background: rgba(255, 255, 255, 0.05);
      border: 1px dashed rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-sm);
      padding: 12px;
      text-align: center;
    }
    .coupon-sub-title {
      font-size: 13px;
      font-weight: 600;
      color: #E2E8F0;
      margin-bottom: 4px;
    }
    .coupon-sub-btn {
      font-size: 12px;
      color: #38BDF8;
      font-weight: 500;
      cursor: pointer;
    }

    /* 板块二：指标看板（#metrics） */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .metric-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      text-align: center;
      box-shadow: var(--card-shadow);
      position: relative;
      overflow: hidden;
    }
    .metric-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
    }
    .metric-number {
      font-size: 38px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 8px;
      font-variant-numeric: tabular-nums;
    }
    .metric-number span {
      font-size: 18px;
      font-weight: 600;
      color: var(--teal);
    }
    .metric-label {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .metric-sub {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.4;
    }

    /* 板块三：内容日历（#calendar） */
    .calendar-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .calendar-card {
      background-color: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      position: relative;
      transition: all 0.3s;
    }
    .calendar-card:hover {
      border-color: var(--accent);
      transform: translateY(-3px);
    }
    .calendar-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      background-color: #EFF6FF;
      padding: 3px 10px;
      border-radius: 99px;
      margin-bottom: 12px;
    }
    .calendar-date {
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .calendar-heading {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .calendar-desc {
      font-size: 13px;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 板块四：热门专题（#matrix） */
    .topic-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .topic-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--card-shadow);
      transition: all 0.3s ease;
    }
    .topic-card:hover {
      box-shadow: var(--card-shadow-hover);
      transform: translateY(-4px);
    }
    .topic-img-wrapper {
      height: 190px;
      overflow: hidden;
      position: relative;
    }
    .topic-img-wrapper img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .topic-card:hover .topic-img-wrapper img {
      transform: scale(1.05);
    }
    .topic-content {
      padding: 24px;
    }
    .topic-badge {
      display: inline-block;
      font-size: 11px;
      font-weight: 700;
      color: var(--teal);
      background-color: var(--teal-light);
      padding: 2px 8px;
      border-radius: 4px;
      margin-bottom: 10px;
    }
    .topic-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .topic-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 16px;
    }
    .topic-link {
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 板块五：品牌与架构介绍（#intro） */
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .intro-img-box {
      position: relative;
      border-radius: var(--radius-xl);
      overflow: hidden;
      box-shadow: 0 16px 36px rgba(15, 23, 42, 0.1);
      border: 1px solid var(--border-color);
    }
    .intro-img-box img {
      width: 100%;
      height: 400px;
      object-fit: cover;
    }
    .intro-float-badge {
      position: absolute;
      bottom: 24px;
      right: 24px;
      background: rgba(15, 23, 42, 0.88);
      backdrop-filter: blur(8px);
      color: #FFFFFF;
      padding: 14px 20px;
      border-radius: var(--radius-md);
      font-size: 13px;
      line-height: 1.5;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }
    .intro-content h3 {
      font-size: 26px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 18px;
      line-height: 1.4;
    }
    .intro-content p {
      font-size: 15px;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 20px;
    }
    .intro-points {
      list-style: none;
      display: grid;
      gap: 12px;
      margin-bottom: 28px;
    }
    .intro-point-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      color: var(--text-body);
    }
    .point-dot {
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
      margin-top: 8px;
      flex-shrink: 0;
    }

    /* 板块六：服务矩阵与核心优势（#advantage） */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .adv-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      box-shadow: var(--card-shadow);
      transition: all 0.3s;
    }
    .adv-card:hover {
      box-shadow: var(--card-shadow-hover);
      transform: translateY(-4px);
      border-color: #CBD5E1;
    }
    .adv-icon {
      width: 48px;
      height: 48px;
      background: #EFF6FF;
      color: var(--primary);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .adv-title {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .adv-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块七：热门系统与产品矩阵（#products） */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .product-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      padding: 36px 30px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.3s;
      position: relative;
    }
    .product-card.featured {
      border: 2px solid var(--primary);
      box-shadow: 0 12px 30px rgba(30, 64, 175, 0.12);
    }
    .featured-label {
      position: absolute;
      top: -12px;
      right: 28px;
      background: var(--primary);
      color: #FFFFFF;
      font-size: 11px;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 99px;
    }
    .product-head {
      margin-bottom: 20px;
    }
    .product-level {
      font-size: 12px;
      font-weight: 600;
      color: var(--teal);
      background-color: var(--teal-light);
      display: inline-block;
      padding: 3px 8px;
      border-radius: 4px;
      margin-bottom: 10px;
    }
    .product-name {
      font-size: 22px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .product-summary {
      font-size: 14px;
      color: var(--text-muted);
      line-height:1.65;
    }
    .product-features {
      list-style: none;
      margin: 24px 0 32px;
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
    }
    .product-features li {
      font-size: 14px;
      color: var(--text-body);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .product-features li::before {
      content: "✓";
      color: var(--teal);
      font-weight: bold;
    }

    /* 板块八：深色案例/设计理念对比（#cases） */
    .cases-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .cases-panel {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-xl);
      padding: 36px;
    }
    .cases-panel-title {
      font-size: 20px;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .cases-step {
      display: flex;
      gap: 16px;
      margin-bottom: 24px;
    }
    .cases-step-num {
      width: 32px;
      height: 32px;
      background: var(--accent);
      color: #FFFFFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
      flex-shrink: 0;
    }
    .cases-step-title {
      font-size: 15px;
      font-weight: 600;
      color: #F8FAFC;
      margin-bottom: 4px;
    }
    .cases-step-text {
      font-size: 13px;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 板块九：行业标杆实景故事（#story） */
    .story-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-xl);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      box-shadow: var(--card-shadow);
    }
    .story-img {
      position: relative;
      min-height: 420px;
    }
    .story-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .story-body {
      padding: 48px 40px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .story-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 10px;
    }
    .story-title {
      font-size: 24px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.4;
    }
    .story-desc {
      font-size: 15px;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .story-kpi {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      border-top: 1px solid var(--border-color);
      padding-top: 20px;
    }
    .story-kpi-val {
      font-size: 24px;
      font-weight: 800;
      color: var(--teal);
    }
    .story-kpi-lbl {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块十：结果对比与降本增效（#comparison） */
    .compare-table {
      width: 100%;
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      border-collapse: separate;
      border-spacing: 0;
      overflow: hidden;
      box-shadow: var(--card-shadow);
    }
    .compare-table th, .compare-table td {
      padding: 20px 24px;
      text-align: left;
      font-size: 14px;
      border-bottom: 1px solid var(--border-color);
    }
    .compare-table th {
      background: #F1F5F9;
      color: var(--text-main);
      font-weight: 700;
      font-size: 15px;
    }
    .compare-table tr:last-child td {
      border-bottom: none;
    }
    .col-highlight {
      background-color: #F0FDF4;
      font-weight: 600;
      color: #166534;
    }
    .col-trad {
      color: var(--text-muted);
    }

    /* 板块十一：用户口碑（#testimonials） */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background-color: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-quote {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 24px;
      position: relative;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .testi-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background-color: #EFF6FF;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
    }
    .testi-name {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }
    .testi-role {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块十二：新闻洞察（#news） */
    .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;
      box-shadow: var(--card-shadow);
      display: flex;
      flex-direction: column;
      transition: all 0.3s;
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-shadow-hover);
    }
    .news-img {
      height: 180px;
      overflow: hidden;
    }
    .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .news-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
      line-height: 1.45;
    }
    .news-snippet {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
    }
    .news-more {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
    }

    /* 板块十三：平台保障与生态联盟（#guarantee） */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-bottom: 48px;
    }
    .guar-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
    }
    .guar-icon {
      font-size: 28px;
      color: var(--teal);
      margin-bottom: 12px;
    }
    .guar-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .guar-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }
    .partner-box {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      text-align: center;
    }
    .partner-title {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 20px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .partner-badges {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
    }
    .partner-pill {
      background: #F8FAFC;
      border: 1px solid var(--border-color);
      padding: 10px 20px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 600;
      color: var(--text-body);
    }

    /* 板块十四：常见问答 FAQ 手风琴（#faq） */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 16px;
      overflow: hidden;
      transition: all 0.25s;
    }
    .faq-question {
      padding: 22px 28px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 700;
      font-size: 16px;
      color: var(--text-main);
      user-select: none;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-icon {
      font-size: 20px;
      font-weight: 400;
      color: var(--text-muted);
      transition: transform 0.25s ease;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 28px;
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.75;
      background-color: #FAFBFD;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 16px 28px 24px;
      border-top: 1px solid var(--border-color);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    /* 板块十五：转化表单（#contact） */
    .contact-card {
      background: linear-gradient(135deg, #1E40AF 0%, #0369A1 100%);
      border-radius: var(--radius-xl);
      padding: 60px 48px;
      color: #FFFFFF;
      box-shadow: 0 20px 40px rgba(30, 64, 175, 0.25);
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1.15fr;
      gap: 50px;
      align-items: center;
    }
    .contact-intro h3 {
      font-size: 30px;
      font-weight: 800;
      margin-bottom: 18px;
      line-height: 1.3;
    }
    .contact-intro p {
      font-size: 15px;
      color: #E0E7FF;
      line-height: 1.75;
      margin-bottom: 24px;
    }
    .contact-perks {
      list-style: none;
      display: grid;
      gap: 12px;
    }
    .contact-perks li {
      font-size: 14px;
      color: #F8FAFC;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .contact-perks li::before {
      content: "★";
      color: #38BDF8;
    }
    .contact-form-box {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 36px 32px;
      color: var(--text-main);
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-input {
      width: 100%;
      height: 44px;
      padding: 0 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 14px;
      background-color: #F8FAFC;
      transition: border-color 0.2s;
    }
    .form-input:focus {
      outline: none;
      border-color: var(--primary);
      background-color: #FFFFFF;
    }
    .form-check {
      display: flex;
      gap: 8px;
      align-items: flex-start;
      margin-bottom: 20px;
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.5;
    }
    .form-check input {
      margin-top: 2px;
    }

    /* 页脚 */
    .site-footer {
      background-color: var(--bg-slate);
      color: #94A3B8;
      padding: 70px 0 28px;
      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: 40px;
      margin-bottom: 48px;
    }
    .footer-col h4 {
      color: #FFFFFF;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-desc {
      line-height: 1.7;
      margin-bottom: 18px;
      font-size: 13px;
    }
    .footer-links {
      list-style: none;
      display: grid;
      gap: 10px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-contact-item {
      margin-bottom: 12px;
      line-height: 1.5;
      font-size: 13px;
    }
    .footer-contact-item strong {
      color: #FFFFFF;
      display: block;
      margin-bottom: 2px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 12px;
    }
    .footer-bottom a:hover {
      color: #FFFFFF;
    }

    /* 浮动转化条 */
    .floating-cta-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: rgba(15, 23, 42, 0.94);
      backdrop-filter: blur(8px);
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding: 12px 0;
      z-index: 99;
      transform: translateY(100%);
      transition: transform 0.3s ease;
    }
    .floating-cta-bar.show {
      transform: translateY(0);
    }
    .floating-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .floating-text {
      color: #FFFFFF;
      font-size: 14px;
      font-weight: 600;
    }
    .floating-text span {
      color: #38BDF8;
      font-weight: 400;
      margin-left: 8px;
      font-size: 13px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .intro-grid, .cases-grid, .story-card, .contact-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .metrics-grid, .calendar-timeline, .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .topic-grid, .advantage-grid, .product-grid, .testimonial-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .story-img {
        min-height: 280px;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .menu-toggle {
        display: block;
      }
      .nav-menu {
        position: fixed;
        top: 76px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        display: none;
      }
      .nav-menu.active {
        display: flex;
      }
      .nav-cta {
        display: none;
      }
      .hero-title {
        font-size: 30px;
      }
      .section-title {
        font-size: 25px;
      }
      .topic-grid, .advantage-grid, .product-grid, .testimonial-grid, .news-grid, .metrics-grid, .calendar-timeline, .guarantee-grid {
        grid-template-columns: 1fr;
      }
      .coupon-sub-list {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .contact-card {
        padding: 32px 20px;
      }
      .contact-form-box {
        padding: 24px 18px;
      }
      .floating-text span {
        display: none;
      }
    }