/* roulang page: index */
:root {
      --primary: #0F52BA;
      --primary-dark: #0D3B66;
      --primary-light: #3B82F6;
      --accent: #10B981;
      --accent-warn: #F59E0B;
      --accent-danger: #EF4444;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #0B192C;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --border-focus: #93C5FD;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-xl: 28px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(15, 82, 186, 0.08);
      --shadow-lg: 0 20px 35px -10px rgba(15, 23, 42, 0.12);
      --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

    /* Reset & Base */
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: var(--font-stack);
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.7;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    button, input, textarea, select {
      font-family: inherit;
      outline: none;
    }

    /* Layout Containers */
    .container {
      width: 100%;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }
    .section-py {
      padding: 5.5rem 0;
    }
    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 3.5rem;
    }
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(15, 82, 186, 0.08);
      color: var(--primary);
      padding: 6px 16px;
      border-radius: 9999px;
      font-size: 0.875rem;
      font-weight: 600;
      margin-bottom: 1rem;
      border: 1px solid rgba(15, 82, 186, 0.15);
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 1.25rem;
      letter-spacing: -0.01em;
    }
    .section-desc {
      font-size: 1.0625rem;
      color: var(--text-muted);
      line-height: 1.8;
    }

    /* Top Bar */
    .top-bar {
      background: #08162B;
      color: #94A3B8;
      font-size: 0.8125rem;
      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;
    }
    .top-bar-left, .top-bar-right {
      display: flex;
      align-items: center;
      gap: 18px;
    }
    .top-bar-item {
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .top-bar-item i {
      color: var(--accent);
    }

    /* Sticky Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: all 0.3s ease;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--primary-dark);
    }
    .brand-logo-icon {
      width: 42px;
      height: 42px;
      background: linear-gradient(135deg, var(--primary), #2563EB);
      color: #fff;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      box-shadow: 0 4px 12px rgba(15, 82, 186, 0.25);
    }
    .brand-tag {
      font-size: 0.75rem;
      background: #EEF2FF;
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
      margin-left: 6px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 2rem;
      list-style: none;
    }
    .nav-link {
      font-size: 0.975rem;
      font-weight: 600;
      color: #334155;
      padding: 6px 0;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: width 0.25s ease;
    }
    .nav-link:hover::after, .nav-link.active::after {
      width: 100%;
    }
    .nav-cta-btn {
      background: linear-gradient(135deg, var(--primary), #1D4ED8);
      color: #fff;
      padding: 10px 22px;
      border-radius: 9999px;
      font-weight: 600;
      font-size: 0.9375rem;
      box-shadow: 0 4px 14px rgba(15, 82, 186, 0.28);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .nav-cta-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(15, 82, 186, 0.38);
      color: #fff;
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* Buttons */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 14px 28px;
      border-radius: 9999px;
      font-size: 1.05rem;
      font-weight: 700;
      cursor: pointer;
      transition: all 0.3s ease;
      border: none;
    }
    .btn-primary {
      background: linear-gradient(135deg, #1D4ED8, #0F52BA);
      color: #fff;
      box-shadow: 0 8px 20px rgba(15, 82, 186, 0.3);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, #2563EB, #1D4ED8);
      transform: translateY(-3px);
      box-shadow: 0 12px 24px rgba(15, 82, 186, 0.4);
      color: #fff;
    }
    .btn-outline {
      background: rgba(255, 255, 255, 0.9);
      color: var(--primary-dark);
      border: 1.5px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .btn-outline:hover {
      background: #FFFFFF;
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-3px);
    }
    .btn-warn {
      background: linear-gradient(135deg, #F59E0B, #D97706);
      color: #fff;
      box-shadow: 0 6px 18px rgba(245, 158, 11, 0.3);
    }
    .btn-warn:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 22px rgba(245, 158, 11, 0.4);
      color: #fff;
    }

    /* Section 1: Hero Banner (品牌旗舰店版式，系列导航条叠在大图上) */
    .hero-section {
      position: relative;
      background: linear-gradient(180deg, #0B192C 0%, #0F2D59 100%);
      color: #fff;
      padding: 5rem 0 7rem;
      overflow: hidden;
    }
    .hero-bg-overlay {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-image: url('/assets/images/aeaa96b1d335123e.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.18;
      mix-blend-mode: overlay;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }
    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.12);
      border: 1px solid rgba(255, 255, 255, 0.25);
      padding: 6px 18px;
      border-radius: 9999px;
      font-size: 0.875rem;
      color: #E2E8F0;
      margin-bottom: 1.75rem;
      backdrop-filter: blur(8px);
    }
    .hero-pill i {
      color: var(--accent);
    }
    .hero-title {
      font-size: 3.25rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 1.5rem;
      letter-spacing: -0.02em;
    }
    .hero-title-highlight {
      background: linear-gradient(90deg, #60A5FA, #34D399);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      font-size: 1.15rem;
      color: #CBD5E1;
      line-height: 1.85;
      margin-bottom: 2.5rem;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 1.25rem;
      flex-wrap: wrap;
      margin-bottom: 3.5rem;
    }
    
    /* 旗舰店系列导航条叠在大图看板上 */
    .hero-showcase {
      position: relative;
      margin-top: 2rem;
      border-radius: var(--radius-xl);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.15);
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
      background: #0F172A;
    }
    .hero-series-bar {
      display: flex;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      padding: 12px 24px;
      justify-content: space-around;
      overflow-x: auto;
    }
    .series-tab-item {
      display: flex;
      align-items: center;
      gap: 8px;
      color: #94A3B8;
      font-size: 0.9375rem;
      font-weight: 600;
      padding: 8px 16px;
      border-radius: 8px;
      white-space: nowrap;
      transition: all 0.2s ease;
    }
    .series-tab-item.active, .series-tab-item:hover {
      background: rgba(255, 255, 255, 0.1);
      color: #38BDF8;
    }
    .hero-preview-img {
      width: 100%;
      height: auto;
      max-height: 520px;
      object-fit: cover;
      display: block;
    }
    .hero-floating-badge {
      position: absolute;
      bottom: 25px;
      right: 25px;
      background: rgba(15, 23, 42, 0.9);
      border: 1px solid rgba(255, 255, 255, 0.2);
      backdrop-filter: blur(10px);
      padding: 14px 20px;
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      gap: 14px;
      box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    }
    .floating-badge-icon {
      width: 44px;
      height: 44px;
      background: rgba(16, 185, 129, 0.2);
      color: var(--accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
    }

    /* Section 2: 全生命周期与业务痛点陈述 (#about) */
    .about-card-wrap {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      padding: 3.5rem;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }
    .about-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 3.5rem;
      align-items: center;
    }
    .about-text h3 {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 1.25rem;
      line-height: 1.35;
    }
    .about-text p {
      color: var(--text-muted);
      margin-bottom: 1.5rem;
      font-size: 1.025rem;
    }
    .about-spec-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
      margin-top: 1.5rem;
    }
    .about-spec-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.925rem;
      font-weight: 600;
      color: var(--text-main);
      background: var(--bg-light);
      padding: 10px 14px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
    }
    .about-spec-item i {
      color: var(--primary);
    }
    .about-media-box {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    /* Section 3: 核心功能优势六卡片 (#features) */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .feature-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.25rem;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      position: relative;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: var(--primary-light);
    }
    .feature-icon-wrapper {
      width: 58px;
      height: 58px;
      border-radius: 14px;
      background: rgba(15, 82, 186, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      margin-bottom: 1.5rem;
    }
    .feature-card:nth-child(2) .feature-icon-wrapper { background: rgba(16, 185, 129, 0.1); color: var(--accent); }
    .feature-card:nth-child(3) .feature-icon-wrapper { background: rgba(245, 158, 11, 0.1); color: var(--accent-warn); }
    .feature-card:nth-child(4) .feature-icon-wrapper { background: rgba(99, 102, 241, 0.1); color: #6366F1; }
    .feature-card:nth-child(5) .feature-icon-wrapper { background: rgba(239, 68, 68, 0.1); color: var(--accent-danger); }
    .feature-card:nth-child(6) .feature-icon-wrapper { background: rgba(14, 165, 233, 0.1); color: #0EA5E9; }
    .feature-title {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 0.85rem;
      color: var(--text-main);
    }
    .feature-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 1.25rem;
    }
    .feature-badge-tag {
      align-self: flex-start;
      font-size: 0.775rem;
      padding: 3px 10px;
      border-radius: 9999px;
      background: var(--bg-light);
      color: var(--text-muted);
      font-weight: 600;
      border: 1px solid var(--border-color);
    }

    /* Section 4: 业务场景演示与产品矩阵 (#solutions) */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .solution-card {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .solution-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }
    .solution-img-box {
      height: 200px;
      overflow: hidden;
      position: relative;
    }
    .solution-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .solution-card:hover .solution-img-box img {
      transform: scale(1.05);
    }
    .solution-body {
      padding: 2rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .solution-tag {
      color: var(--primary);
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 0.5rem;
    }
    .solution-title {
      font-size: 1.35rem;
      font-weight: 800;
      margin-bottom: 0.75rem;
      color: var(--text-main);
    }
    .solution-desc {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.5rem;
    }
    .solution-checklist {
      list-style: none;
      margin-bottom: 1.75rem;
      flex-grow: 1;
    }
    .solution-checklist li {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.8875rem;
      color: #334155;
      margin-bottom: 8px;
    }
    .solution-checklist li i {
      color: var(--accent);
      font-size: 0.85rem;
    }

    /* Section 5: 深色对比板块 - 法务风控理念 (#philosophy) */
    .dark-section {
      background: var(--bg-dark);
      color: #FFFFFF;
      padding: 6rem 0;
      position: relative;
    }
    .dark-inner {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 4rem;
      align-items: center;
    }
    .dark-header .section-badge {
      background: rgba(59, 130, 246, 0.15);
      color: #60A5FA;
      border-color: rgba(59, 130, 246, 0.3);
    }
    .dark-title {
      font-size: 2.25rem;
      font-weight: 800;
      margin-bottom: 1.5rem;
      line-height: 1.3;
    }
    .dark-desc {
      color: #94A3B8;
      font-size: 1.05rem;
      line-height: 1.8;
      margin-bottom: 2rem;
    }
    .dark-metric-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1.5rem;
    }
    .dark-metric-box {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 1.5rem;
    }
    .dark-metric-num {
      font-size: 2rem;
      font-weight: 900;
      color: #38BDF8;
      margin-bottom: 0.25rem;
      font-family: var(--font-stack);
    }
    .dark-metric-label {
      font-size: 0.875rem;
      color: #CBD5E1;
    }
    .dark-compare-box {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-xl);
      padding: 2.5rem;
    }
    .compare-item {
      margin-bottom: 1.5rem;
      padding-bottom: 1.5rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }
    .compare-item:last-child {
      margin-bottom: 0;
      padding-bottom: 0;
      border-bottom: none;
    }
    .compare-head {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      margin-bottom: 0.5rem;
      font-size: 1.05rem;
    }
    .compare-head.traditional { color: #F87171; }
    .compare-head.system { color: #34D399; }
    .compare-detail {
      font-size: 0.9rem;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* Section 6: 落地案例与数字化实践故事 (#cases) */
    .cases-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2.5rem;
    }
    .case-card {
      background: #FFFFFF;
      border-radius: var(--radius-xl);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .case-img-box {
      height: 240px;
      position: relative;
    }
    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-tag-overlay {
      position: absolute;
      top: 16px;
      left: 16px;
      background: rgba(15, 23, 42, 0.85);
      color: #fff;
      font-size: 0.8125rem;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 6px;
      backdrop-filter: blur(4px);
    }
    .case-content {
      padding: 2.25rem;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .case-title {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 1rem;
    }
    .case-summary {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 1.75rem;
    }
    .case-stat-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
      padding-top: 1.25rem;
      border-top: 1px solid var(--border-color);
    }
    .case-stat-item strong {
      display: block;
      font-size: 1.5rem;
      font-weight: 800;
      color: var(--primary);
    }
    .case-stat-item span {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* Section 7: 关键效能统计条 (#metrics) */
    .metrics-bar-section {
      background: linear-gradient(135deg, #0F52BA, #1E40AF);
      color: #fff;
      padding: 3.5rem 0;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }
    .metric-item-large .num {
      font-size: 2.75rem;
      font-weight: 900;
      margin-bottom: 0.35rem;
      letter-spacing: -0.02em;
    }
    .metric-item-large .label {
      font-size: 1rem;
      color: #BFDBFE;
      font-weight: 600;
      margin-bottom: 0.25rem;
    }
    .metric-item-large .desc {
      font-size: 0.8125rem;
      color: #93C5FD;
    }

    /* Section 8: 客户评价与法务总监口碑 (#testimonials) */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .testimonial-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.25rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .stars-row {
      color: #F59E0B;
      font-size: 0.875rem;
      margin-bottom: 1.25rem;
      display: flex;
      gap: 4px;
    }
    .quote-text {
      font-size: 0.95rem;
      color: #334155;
      line-height: 1.75;
      margin-bottom: 1.75rem;
      font-style: italic;
    }
    .author-info {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .author-avatar {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: #EEF2FF;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.15rem;
      font-weight: 700;
    }
    .author-name {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text-main);
    }
    .author-role {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* Section 9: 资讯与风控法规动态 (#news) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .news-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-light);
    }
    .news-card-img {
      height: 180px;
      overflow: hidden;
    }
    .news-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .news-body {
      padding: 1.75rem;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-meta {
      font-size: 0.8125rem;
      color: var(--text-muted);
      margin-bottom: 0.65rem;
      display: flex;
      justify-content: space-between;
    }
    .news-title {
      font-size: 1.15rem;
      font-weight: 700;
      line-height: 1.45;
      margin-bottom: 0.75rem;
      color: var(--text-main);
    }
    .news-summary {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 1.25rem;
      flex-grow: 1;
    }
    .news-link-btn {
      color: var(--primary);
      font-weight: 700;
      font-size: 0.875rem;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* Section 10: 常见问题手风琴 (#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: 1rem;
      overflow: hidden;
      transition: border-color 0.2s ease;
    }
    .faq-item[open] {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-sm);
    }
    .faq-summary {
      padding: 1.25rem 1.5rem;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      list-style: none;
      user-select: none;
    }
    .faq-summary::-webkit-details-marker {
      display: none;
    }
    .faq-summary i {
      color: var(--primary);
      transition: transform 0.25s ease;
    }
    .faq-item[open] .faq-summary i {
      transform: rotate(180deg);
    }
    .faq-answer {
      padding: 0 1.5rem 1.25rem;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
      padding-top: 1rem;
    }

    /* Section 11: 安全与合规资质保障条 (#guarantee) */
    .guarantee-bar {
      background: #FFFFFF;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
      padding: 2.5rem 0;
    }
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
    }
    .guarantee-item {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .guarantee-icon {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: rgba(16, 185, 129, 0.1);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      flex-shrink: 0;
    }
    .guarantee-info strong {
      display: block;
      font-size: 1rem;
      color: var(--text-main);
      font-weight: 700;
    }
    .guarantee-info span {
      font-size: 0.8125rem;
      color: var(--text-muted);
    }

    /* Section 12: 转化预约表单收口区 (#contact) */
    .contact-card-box {
      background: linear-gradient(135deg, #0F172A, #0F3B66);
      border-radius: var(--radius-xl);
      padding: 4rem;
      color: #fff;
      box-shadow: var(--shadow-lg);
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 4rem;
      align-items: center;
    }
    .contact-left h2 {
      font-size: 2.35rem;
      font-weight: 900;
      margin-bottom: 1.25rem;
      line-height: 1.3;
    }
    .contact-left p {
      color: #CBD5E1;
      font-size: 1.05rem;
      line-height: 1.8;
      margin-bottom: 2rem;
    }
    .contact-bullets {
      list-style: none;
    }
    .contact-bullets li {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 1rem;
      font-size: 0.95rem;
      color: #E2E8F0;
    }
    .contact-bullets li i {
      color: var(--accent);
    }
    .contact-form-panel {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 2.5rem;
      color: var(--text-main);
      box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
    }
    .contact-form-panel h3 {
      font-size: 1.35rem;
      font-weight: 800;
      margin-bottom: 0.5rem;
      text-align: center;
    }
    .contact-form-panel p {
      font-size: 0.875rem;
      color: var(--text-muted);
      text-align: center;
      margin-bottom: 1.75rem;
    }
    .form-group {
      margin-bottom: 1.25rem;
    }
    .form-label {
      display: block;
      font-size: 0.875rem;
      font-weight: 700;
      margin-bottom: 0.4rem;
      color: #334155;
    }
    .form-input, .form-select {
      width: 100%;
      padding: 12px 14px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      font-size: 0.9375rem;
      transition: all 0.2s ease;
      background: #F8FAFC;
    }
    .form-input:focus, .form-select:focus {
      border-color: var(--primary);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(15, 82, 186, 0.15);
    }
    .form-submit-btn {
      width: 100%;
      padding: 14px;
      background: linear-gradient(135deg, var(--primary), #1D4ED8);
      color: #fff;
      font-weight: 700;
      font-size: 1.05rem;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      margin-top: 0.5rem;
      transition: all 0.25s ease;
    }
    .form-submit-btn:hover {
      background: linear-gradient(135deg, #1D4ED8, #0D3B66);
      box-shadow: 0 6px 18px rgba(15, 82, 186, 0.35);
    }
    .form-privacy-hint {
      font-size: 0.75rem;
      color: #94A3B8;
      text-align: center;
      margin-top: 1rem;
    }

    /* Site Footer */
    .site-footer {
      background: #060E1A;
      color: #94A3B8;
      padding: 5rem 0 2rem;
      font-size: 0.9rem;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
    }
    .footer-top-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-brand h4 {
      font-size: 1.35rem;
      font-weight: 800;
      color: #FFFFFF;
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-brand p {
      line-height: 1.75;
      font-size: 0.875rem;
      margin-bottom: 1.5rem;
      color: #64748B;
    }
    .footer-col-title {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 1.25rem;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 0.75rem;
    }
    .footer-links a:hover {
      color: #38BDF8;
    }
    .footer-contact-item {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 0.85rem;
      font-size: 0.875rem;
    }
    .footer-bottom-bar {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.8125rem;
    }
    .footer-bottom-bar a:hover {
      color: #FFFFFF;
    }

    /* Responsive Media Queries */
    @media (max-width: 1024px) {
      .features-grid, .solutions-grid, .testimonials-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
      .metrics-grid, .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-title {
        font-size: 2.6rem;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-menu {
        position: fixed;
        top: 74px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--border-color);
        clip-path: polygon(0 0, 100 0, 100% 0, 0 0);
        transition: clip-path 0.3s ease-in-out;
        pointer-events: none;
      }
      .nav-menu.open {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
        pointer-events: auto;
      }
      .nav-actions {
        display: none;
      }
      .about-grid, .dark-inner, .cases-grid, .contact-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
      .features-grid, .solutions-grid, .testimonials-grid, .news-grid, .guarantee-grid, .metrics-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .hero-section {
        padding: 3.5rem 0 5rem;
      }
      .section-py {
        padding: 3.5rem 0;
      }
      .about-card-wrap, .contact-card-box {
        padding: 2rem 1.5rem;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
      }
      .hero-floating-badge {
        display: none;
      }
    }