/* roulang page: index */
:root {
      --primary: #0F2C2C;
      --primary-light: #184343;
      --accent: #18A096;
      --accent-hover: #13837b;
      --gold: #D4AF37;
      --bg-light: #F8F9FA;
      --bg-alt: #F2F4F3;
      --bg-dark: #0A1B1B;
      --text-dark: #212529;
      --text-muted: #6C757D;
      --text-light: #F8F9FA;
      --border-color: rgba(0, 0, 0, 0.08);
      --border-dark: rgba(255, 255, 255, 0.12);
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --shadow-sm: 0 2px 6px rgba(15, 44, 44, 0.04);
      --shadow-md: 0 12px 28px rgba(15, 44, 44, 0.08);
      --shadow-lg: 0 24px 48px rgba(10, 27, 27, 0.14);
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-dark);
      background-color: var(--bg-light);
      line-height: 1.75;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

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

    button, input {
      font-family: inherit;
    }

    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部导航栏系统 */
    .top-meta-bar {
      background-color: #071515;
      color: #9ab3b3;
      font-size: 12px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .top-meta-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 8px 0;
    }

    .meta-badges {
      display: flex;
      gap: 20px;
    }

    .meta-badge-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .meta-dot {
      width: 6px;
      height: 6px;
      background-color: var(--accent);
      border-radius: 50%;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      box-shadow: 0 1px 12px rgba(15, 44, 44, 0.06);
      border-bottom: 1px solid var(--border-color);
    }

    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 76px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      font-size: 1.35rem;
      color: var(--primary);
      letter-spacing: -0.5px;
    }

    .logo-symbol {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      font-weight: 800;
      font-size: 16px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }

    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: #3d4a4a;
      position: relative;
      padding: 8px 0;
    }

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

    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 24px;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      font-weight: 600;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-primary {
      background-color: var(--accent);
      color: #ffffff;
    }

    .btn-primary:hover {
      background-color: var(--accent-hover);
      box-shadow: 0 4px 16px rgba(24, 160, 150, 0.28);
    }

    .btn-dark {
      background-color: var(--primary);
      color: #ffffff;
    }

    .btn-dark:hover {
      background-color: var(--primary-light);
    }

    .btn-outline {
      border-color: rgba(255, 255, 255, 0.4);
      color: #ffffff;
    }

    .btn-outline:hover {
      background-color: rgba(255, 255, 255, 0.12);
      border-color: #ffffff;
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--primary);
      margin: 5px 0;
      transition: var(--transition);
    }

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

    .section-header {
      margin-bottom: 56px;
    }

    .section-header.text-center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }

    .section-header.header-flex {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      gap: 32px;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      text-transform: uppercase;
      font-weight: 700;
      letter-spacing: 1.5px;
      color: var(--accent);
      margin-bottom: 12px;
    }

    .section-tag.tag-gold {
      color: var(--gold);
    }

    .section-title {
      font-size: clamp(1.65rem, 2.6vw, 2.4rem);
      font-weight: 800;
      color: var(--primary);
      line-height: 1.35;
      margin-bottom: 16px;
    }

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

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }

    .dark-section .section-desc {
      color: #9cb5b5;
    }

    /* 1. Hero 品牌旗舰店布局 */
    .hero-flagship {
      position: relative;
      min-height: 640px;
      background-color: var(--bg-dark);
      display: flex;
      align-items: center;
      overflow: hidden;
      padding: 80px 0;
    }

    .hero-bg-media {
      position: absolute;
      inset: 0;
      z-index: 1;
      opacity: 0.28;
      background-image: url('/assets/images/da80e17bfbd4914f.webp');
      background-size: cover;
      background-position: center;
      filter: saturate(0.85);
    }

    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 960px;
    }

    .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 6px 16px;
      background: rgba(24, 160, 150, 0.16);
      border: 1px solid rgba(24, 160, 150, 0.35);
      border-radius: 30px;
      color: #4ce3d7;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 24px;
    }

    .hero-title {
      font-size: clamp(2.2rem, 4.4vw, 3.4rem);
      font-weight: 800;
      color: #ffffff;
      line-height: 1.25;
      letter-spacing: -0.5px;
      margin-bottom: 24px;
    }

    .hero-summary {
      font-size: 1.12rem;
      color: #cadbd8;
      line-height: 1.85;
      margin-bottom: 36px;
      max-width: 860px;
    }

    /* 叠在大图上的系列导航条 */
    .flagship-nav-overlay {
      background: rgba(15, 44, 44, 0.78);
      backdrop-filter: blur(16px);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 16px 24px;
      display: grid;
      grid-template-columns: repeat(4, 1fr) auto;
      align-items: center;
      gap: 20px;
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.35);
    }

    .nav-track-item {
      display: flex;
      flex-direction: column;
      border-right: 1px solid rgba(255, 255, 255, 0.1);
      padding-right: 16px;
    }

    .nav-track-label {
      font-size: 0.75rem;
      color: #8da6a6;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .nav-track-val {
      font-size: 0.95rem;
      font-weight: 600;
      color: #ffffff;
      margin-top: 4px;
    }

    /* 2. 品牌故事区 */
    .brand-story-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 56px;
      align-items: center;
    }

    .story-card-stack {
      position: relative;
    }

    .story-card-main {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }

    .story-badge-float {
      position: absolute;
      bottom: -24px;
      right: 24px;
      background: var(--bg-dark);
      color: #ffffff;
      padding: 24px 32px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-dark);
      box-shadow: var(--shadow-lg);
    }

    .story-badge-num {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--gold);
      line-height: 1;
    }

    .story-badge-txt {
      font-size: 0.85rem;
      color: #a4bebe;
      margin-top: 6px;
    }

    .lead-story-text {
      font-size: 1.15rem;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 20px;
      line-height: 1.8;
    }

    .story-features {
      margin-top: 32px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .story-feature-box {
      background: #ffffff;
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .story-feature-title {
      font-weight: 700;
      color: var(--primary);
      font-size: 0.95rem;
      margin-bottom: 6px;
    }

    .story-feature-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 3. 痛点洞察板块 (非对称网格) */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .pain-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 28px;
      transition: var(--transition);
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .pain-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(24, 160, 150, 0.3);
    }

    .pain-card.tall {
      background: #fafcfb;
      border-left: 4px solid var(--accent);
    }

    .pain-index {
      font-size: 1.8rem;
      font-weight: 800;
      color: rgba(15, 44, 44, 0.12);
      margin-bottom: 16px;
      line-height: 1;
    }

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

    .pain-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .pain-solve-tag {
      font-size: 0.8rem;
      font-weight: 600;
      color: var(--accent);
      background: rgba(24, 160, 150, 0.08);
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      display: inline-block;
      align-self: flex-start;
    }

    /* 4. 系列导航与架构技术 */
    .arch-card {
      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 1fr;
      gap: 48px;
      align-items: center;
    }

    .spec-table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 24px;
    }

    .spec-table th,
    .spec-table td {
      padding: 14px 16px;
      text-align: left;
      font-size: 0.9rem;
      border-bottom: 1px solid #edf2f2;
    }

    .spec-table th {
      color: var(--primary);
      font-weight: 700;
      width: 32%;
      background: #f7faf9;
    }

    .spec-table td {
      color: #384242;
    }

    /* 5. 核心优势区 (6卡片网格) */
    .benefit-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .benefit-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 36px 30px;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
    }

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

    .benefit-icon {
      width: 48px;
      height: 48px;
      background: rgba(24, 160, 150, 0.1);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-weight: 800;
      font-size: 1.25rem;
      margin-bottom: 20px;
    }

    .benefit-card-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }

    .benefit-card-text {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 6. 爆款产品矩阵 (3卡片) */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }

    .product-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .product-card:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-6px);
      border-color: rgba(24, 160, 150, 0.4);
    }

    .product-img-box {
      height: 220px;
      overflow: hidden;
      position: relative;
    }

    .product-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.6s ease;
    }

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

    .product-tag-pill {
      position: absolute;
      top: 16px;
      left: 16px;
      background: rgba(15, 44, 44, 0.85);
      backdrop-filter: blur(8px);
      color: #ffffff;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
    }

    .product-body {
      padding: 32px 28px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

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

    .product-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 24px;
      flex-grow: 1;
    }

    .product-list {
      list-style: none;
      border-top: 1px solid #f0f3f3;
      padding-top: 16px;
      margin-bottom: 24px;
    }

    .product-list li {
      font-size: 0.85rem;
      color: #495555;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .product-list li::before {
      content: "✓";
      color: var(--accent);
      font-weight: bold;
    }

    /* 7. 链路时序实施步骤 (4步时序) */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
      margin-top: 32px;
    }

    .process-timeline::after {
      content: "";
      position: absolute;
      top: 28px;
      left: 10%;
      width: 80%;
      height: 2px;
      background: #e2e8e8;
      z-index: 1;
    }

    .step-item {
      position: relative;
      z-index: 2;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
    }

    .step-num-bubble {
      width: 48px;
      height: 48px;
      background: #ffffff;
      border: 2px solid var(--accent);
      color: var(--primary);
      font-weight: 800;
      font-size: 1.1rem;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px auto;
      box-shadow: 0 0 0 6px #f2f7f6;
    }

    .step-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 8. 深色对比区：文旅智能中枢看板与算力理念 */
    .dark-section {
      background-color: var(--bg-dark);
      color: #ffffff;
    }

    .cockpit-mockup-wrapper {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-lg);
    }

    .cockpit-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 32px;
      align-items: center;
    }

    .cockpit-media {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .cockpit-metrics {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .cockpit-metric-card {
      background: rgba(15, 44, 44, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 20px;
    }

    .metric-val-num {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--accent);
      font-family: monospace;
    }

    .metric-label-txt {
      font-size: 0.85rem;
      color: #a1b8b8;
      margin-top: 4px;
    }

    /* 9. 横向关键数据统计条 */
    .stats-bar-section {
      background: linear-gradient(180deg, var(--bg-dark) 0%, var(--primary) 100%);
      padding: 56px 0;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
      color: #ffffff;
    }

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

    .stat-number-box {
      font-size: clamp(2rem, 3.5vw, 3rem);
      font-weight: 800;
      color: var(--gold);
      line-height: 1.1;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    }

    .stat-number-box span {
      font-size: 1.1rem;
      font-weight: 600;
      color: #d1dfde;
      margin-left: 4px;
    }

    .stat-desc-label {
      font-size: 0.9rem;
      color: #a4bebe;
      margin-top: 8px;
    }

    /* 10. 用户故事与标杆案例区 (双栏对比) */
    .case-card-dual {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

    .case-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .case-photo {
      height: 240px;
      overflow: hidden;
    }

    .case-photo img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .case-details {
      padding: 32px;
    }

    .case-client-tag {
      font-size: 0.8rem;
      color: var(--accent);
      font-weight: 700;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      margin-bottom: 8px;
    }

    .case-heading {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 14px;
    }

    .case-narrative {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 20px;
    }

    .case-kpi-row {
      display: flex;
      gap: 24px;
      border-top: 1px solid #edf1f1;
      padding-top: 16px;
    }

    .kpi-unit-val {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
    }

    .kpi-unit-lbl {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 11. 适用人群与决策场景 */
    .audience-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .audience-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      transition: var(--transition);
    }

    .audience-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      border-color: var(--accent);
    }

    .audience-icon-badge {
      width: 44px;
      height: 44px;
      background: #eff7f6;
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-weight: bold;
      margin-bottom: 18px;
    }

    .audience-role {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
    }

    .audience-scope {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 12. 口碑与行业反馈 */
    .testimonials-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-md);
      padding: 32px 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-quote {
      font-size: 0.95rem;
      color: #3b4747;
      line-height: 1.8;
      font-style: normal;
      margin-bottom: 24px;
      position: relative;
    }

    .testimonial-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #edf1f1;
      padding-top: 16px;
    }

    .author-avatar {
      width: 42px;
      height: 42px;
      background: var(--primary-light);
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 0.9rem;
    }

    .author-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--primary);
    }

    .author-title {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* 13. 前沿资讯与动态速递 */
    .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-md);
      overflow: hidden;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

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

    .news-media {
      height: 180px;
      overflow: hidden;
    }

    .news-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

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

    .news-date {
      font-size: 0.75rem;
      color: #8a9999;
      margin-bottom: 8px;
    }

    .news-card-title {
      font-size: 1.08rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
      line-height: 1.5;
    }

    .news-card-excerpt {
      font-size: 0.86rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 14. 常见问题解答 FAQ 手风琴 */
    .faq-wrapper {
      max-width: 880px;
      margin: 0 auto;
    }

    .faq-item {
      border-bottom: 1px solid var(--border-color);
    }

    .faq-question {
      width: 100%;
      background: none;
      border: none;
      padding: 22px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--primary);
      text-align: left;
      cursor: pointer;
    }

    .faq-icon-toggle {
      font-size: 1.3rem;
      color: var(--accent);
      transition: var(--transition);
      font-weight: 300;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.8;
      padding-bottom: 0;
    }

    .faq-item.active .faq-answer {
      padding-bottom: 22px;
    }

    .faq-item.active .faq-icon-toggle {
      transform: rotate(45deg);
    }

    /* 15. 保障条徽章体系 */
    .trust-strip {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 36px 0;
    }

    .trust-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .trust-item {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .trust-ico {
      width: 44px;
      height: 44px;
      background: #eff7f6;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-weight: 800;
      font-size: 1.1rem;
      flex-shrink: 0;
    }

    .trust-headline {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--primary);
    }

    .trust-sub {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 16. 底部转化收口 CTA */
    .cta-narrow-box {
      background: linear-gradient(135deg, var(--bg-dark) 0%, #113636 100%);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border: 1px solid var(--border-dark);
      box-shadow: var(--shadow-lg);
      position: relative;
      overflow: hidden;
    }

    .cta-text-side {
      max-width: 680px;
    }

    .cta-heading {
      font-size: clamp(1.6rem, 2.8vw, 2.2rem);
      color: #ffffff;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .cta-subtext {
      color: #aed1d1;
      font-size: 1rem;
      line-height: 1.7;
    }

    .cta-action-side {
      display: flex;
      gap: 16px;
      flex-shrink: 0;
    }

    /* 页脚系统 */
    .site-footer {
      background-color: #061111;
      color: #8da4a4;
      font-size: 0.88rem;
      padding-top: 80px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-columns {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1.4fr;
      gap: 48px;
      margin-bottom: 60px;
    }

    .footer-brand-title {
      font-size: 1.3rem;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 16px;
    }

    .footer-about-text {
      line-height: 1.8;
      margin-bottom: 20px;
      color: #839e9e;
    }

    .footer-col-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: #ffffff;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 20px;
    }

    .footer-links {
      list-style: none;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a:hover {
      color: var(--accent);
      padding-left: 4px;
    }

    .footer-contact-list {
      list-style: none;
    }

    .footer-contact-list li {
      margin-bottom: 12px;
      line-height: 1.6;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding: 24px 0;
      font-size: 0.8rem;
      text-align: center;
      color: #607777;
    }

    .footer-bottom a {
      color: #829e9e;
    }

    /* 移动端抽屉导航交互 */
    .mobile-drawer {
      position: fixed;
      inset: 0;
      background: rgba(10, 27, 27, 0.98);
      backdrop-filter: blur(16px);
      z-index: 1001;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: 24px;
      transform: translateY(-100%);
      transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    .mobile-drawer a {
      font-size: 1.35rem;
      color: #ffffff;
      font-weight: 600;
    }

    .close-drawer-btn {
      position: absolute;
      top: 24px;
      right: 24px;
      background: none;
      border: none;
      color: #ffffff;
      font-size: 2rem;
      cursor: pointer;
    }

    /* 响应式断点系统 */
    @media (max-width: 1024px) {
      .flagship-nav-overlay {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }
      .nav-track-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding-bottom: 10px;
      }
      .brand-story-grid,
      .arch-card,
      .cockpit-grid {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .benefit-grid,
      .product-grid,
      .news-grid,
      .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .audience-grid,
      .trust-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-columns {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline::after {
        display: none;
      }
    }

    @media (max-width: 768px) {
      .top-meta-bar {
        display: none;
      }
      .nav-links,
      .nav-actions {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .section-wrap {
        padding: 64px 0;
      }
      .hero-flagship {
        padding: 56px 0;
        min-height: auto;
      }
      .flagship-nav-overlay {
        grid-template-columns: 1fr;
      }
      .pain-grid,
      .benefit-grid,
      .product-grid,
      .news-grid,
      .testimonials-grid,
      .case-card-dual,
      .audience-grid,
      .process-timeline,
      .trust-grid {
        grid-template-columns: 1fr;
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .cockpit-metrics {
        grid-template-columns: 1fr;
      }
      .cta-narrow-box {
        flex-direction: column;
        text-align: center;
        gap: 24px;
        padding: 40px 24px;
      }
      .cta-action-side {
        flex-direction: column;
        width: 100%;
      }
      .cta-action-side .btn {
        width: 100%;
      }
      .footer-columns {
        grid-template-columns: 1fr;
      }
      .story-badge-float {
        position: static;
        margin-top: 16px;
      }
    }