:root {
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --accent-orange: #ff5722;
      --accent-amber: #f59e0b;
      --accent-teal: #0d9488;
      --accent-purple: #7c3aed;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-color: #e2e8f0;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 16px 36px rgba(15, 23, 42, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    }

    body {
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(at 0% 0%, rgba(37, 99, 235, 0.06) 0px, transparent 50%),
        radial-gradient(at 100% 10%, rgba(255, 87, 34, 0.05) 0px, transparent 50%),
        radial-gradient(at 50% 60%, rgba(13, 148, 136, 0.04) 0px, transparent 50%);
      background-attachment: fixed;
    }

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid #e0e7ff;
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
    }

    .brand-title {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    .brand-tag {
      font-size: 0.75rem;
      background: #eff6ff;
      color: var(--primary);
      padding: 2px 8px;
      border-radius: 4px;
      border: 1px solid #bfdbfe;
      font-weight: 700;
    }

    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 600;
      color: #334155;
      border-radius: 6px;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background: #f1f5f9;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 50px;
      font-weight: 700;
      font-size: 0.95rem;
      cursor: pointer;
      border: none;
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    }

    .btn-contrast-blue {
      background: var(--primary);
      color: #ffffff;
    }
    .btn-contrast-blue:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(37, 99, 235, 0.35);
    }

    .btn-contrast-orange {
      background: var(--accent-orange);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(255, 87, 34, 0.25);
    }
    .btn-contrast-orange:hover {
      background: #ea580c;
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(255, 87, 34, 0.35);
    }

    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
      border: 2px solid var(--border-color);
      box-shadow: none;
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #f8fafc;
    }

    .menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-color);
      padding: 6px 10px;
      border-radius: 6px;
      cursor: pointer;
      font-size: 1.2rem;
    }

    /* Hero 首屏：不使用任何图片 */
    .hero-section {
      padding: 68px 0 54px;
      position: relative;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 36px;
      align-items: stretch;
    }

    .hero-content {
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .hero-badge-group {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #fff;
      border: 1.5px solid #fed7aa;
      padding: 6px 14px;
      border-radius: 30px;
      box-shadow: 0 2px 8px rgba(249, 115, 22, 0.1);
      width: fit-content;
      margin-bottom: 20px;
    }

    .hero-badge-tag {
      background: var(--accent-orange);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 2px 8px;
      border-radius: 20px;
    }

    .hero-badge-text {
      font-size: 0.88rem;
      font-weight: 700;
      color: #9a3412;
    }

    .hero-title {
      font-size: 2.85rem;
      line-height: 1.2;
      font-weight: 900;
      color: #0f172a;
      letter-spacing: -1px;
      margin-bottom: 20px;
    }

    .hero-highlight {
      background: linear-gradient(120deg, var(--primary) 0%, var(--accent-orange) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-desc {
      font-size: 1.12rem;
      color: var(--text-muted);
      margin-bottom: 28px;
      max-width: 620px;
    }

    .hero-buttons {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
      margin-bottom: 34px;
    }

    .hero-tags-wrapper {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      align-items: center;
    }

    .hero-tag-item {
      font-size: 0.82rem;
      font-weight: 600;
      background: #ffffff;
      color: #334155;
      padding: 6px 12px;
      border-radius: 6px;
      border: 1px solid #cbd5e1;
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }

    .hero-card-panel {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 28px;
      border: 2px solid #e2e8f0;
      box-shadow: var(--shadow-lg);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      overflow: hidden;
    }

    .hero-card-panel::before {
      content: "";
      position: absolute;
      top: 0;
      right: 0;
      width: 140px;
      height: 140px;
      background: linear-gradient(135deg, rgba(37,99,235,0.12), rgba(255,87,34,0.12));
      border-bottom-left-radius: 100%;
    }

    .panel-header {
      margin-bottom: 20px;
    }

    .panel-header h3 {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .status-indicator {
      display: inline-block;
      width: 10px;
      height: 10px;
      background: #22c55e;
      border-radius: 50%;
      box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.2);
    }

    .panel-stat-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
      margin-bottom: 20px;
    }

    .stat-box {
      background: #f8fafc;
      border: 1.5px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 14px;
      transition: all 0.2s ease;
    }

    .stat-box:hover {
      border-color: var(--primary);
      background: #eff6ff;
      transform: translateY(-2px);
    }

    .stat-box-title {
      font-size: 0.8rem;
      color: var(--text-muted);
      font-weight: 600;
      margin-bottom: 4px;
    }

    .stat-box-value {
      font-size: 1.35rem;
      font-weight: 900;
      color: var(--text-main);
    }

    .stat-box-desc {
      font-size: 0.72rem;
      color: #64748b;
    }

    .models-marquee-label {
      font-size: 0.8rem;
      font-weight: 700;
      color: #475569;
      margin-bottom: 10px;
    }

    .model-pills-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .model-pill {
      font-size: 0.74rem;
      font-weight: 700;
      padding: 4px 8px;
      border-radius: 6px;
      background: #f1f5f9;
      color: #1e293b;
      border: 1px solid #cbd5e1;
    }
    .model-pill.pill-accent {
      background: #fff7ed;
      color: #c2410c;
      border-color: #ffedd5;
    }
    .model-pill.pill-blue {
      background: #eff6ff;
      color: #1d4ed8;
      border-color: #dbeafe;
    }

    /* 通用 Section 样式 */
    section {
      padding: 68px 0;
      position: relative;
    }

    .section-title-wrap {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 46px;
    }

    .section-badge {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 800;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .badge-blue { background: #dbeafe; color: var(--primary); }
    .badge-orange { background: #ffedd5; color: var(--accent-orange); }
    .badge-teal { background: #ccfbf1; color: var(--accent-teal); }
    .badge-purple { background: #ede9fe; color: var(--accent-purple); }

    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.25;
      margin-bottom: 12px;
    }

    .section-subtext {
      font-size: 1rem;
      color: var(--text-muted);
    }

    /* 卡片网格 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1.5px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #93c5fd;
    }

    .card-icon {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      margin-bottom: 16px;
      font-weight: bold;
    }

    .card-icon.bg-c1 { background: #eff6ff; color: #2563eb; }
    .card-icon.bg-c2 { background: #fff7ed; color: #ea580c; }
    .card-icon.bg-c3 { background: #f0fdf4; color: #16a34a; }
    .card-icon.bg-c4 { background: #faf5ff; color: #9333ea; }
    .card-icon.bg-c5 { background: #ecfeff; color: #0891b2; }
    .card-icon.bg-c6 { background: #fff1f2; color: #e11d48; }

    .service-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .service-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.55;
      margin-bottom: 14px;
    }

    .card-footer-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: auto;
    }

    .card-footer-tags span {
      font-size: 0.72rem;
      padding: 2px 7px;
      background: #f1f5f9;
      color: #475569;
      border-radius: 4px;
      font-weight: 600;
    }

    /* 平台核心能力介绍 */
    .intro-box {
      background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
      border: 2px solid #cbd5e1;
      border-radius: var(--radius-lg);
      padding: 34px;
      box-shadow: var(--shadow-md);
      margin-bottom: 30px;
    }

    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
      align-items: center;
    }

    .intro-text h3 {
      font-size: 1.6rem;
      font-weight: 800;
      margin-bottom: 14px;
      color: #0f172a;
    }

    .intro-features {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 16px;
    }

    .intro-features li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.95rem;
      color: #334155;
    }

    .check-dot {
      display: inline-flex;
      width: 20px;
      height: 20px;
      background: #2563eb;
      color: #ffffff;
      border-radius: 50%;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: bold;
      flex-shrink: 0;
      margin-top: 2px;
    }

    /* 视觉素材展示区 */
    .media-showcase-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 20px;
      margin-top: 26px;
    }

    .media-box {
      background: #fff;
      border-radius: var(--radius-md);
      border: 2px solid #e2e8f0;
      padding: 14px;
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .media-box img {
      width: 100%;
      height: auto;
      border-radius: var(--radius-sm);
      display: block;
      transition: transform 0.3s ease;
    }

    .media-box:hover img {
      transform: scale(1.015);
    }

    .media-caption {
      margin-top: 10px;
      font-size: 0.85rem;
      font-weight: 700;
      color: #334155;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    /* 流程步骤 */
    .flow-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .flow-step-card {
      background: #ffffff;
      border: 1.5px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 22px;
      position: relative;
    }

    .flow-step-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: var(--primary);
      border-top-left-radius: var(--radius-md);
      border-top-right-radius: var(--radius-md);
    }
    .flow-step-card:nth-child(2)::before { background: var(--accent-orange); }
    .flow-step-card:nth-child(3)::before { background: var(--accent-teal); }
    .flow-step-card:nth-child(4)::before { background: var(--accent-purple); }

    .step-num {
      font-size: 1.8rem;
      font-weight: 900;
      color: #cbd5e1;
      margin-bottom: 8px;
    }

    .flow-step-card h4 {
      font-size: 1.1rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .flow-step-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测表格 */
    .eval-container {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 2px solid #cbd5e1;
      box-shadow: var(--shadow-lg);
      overflow: hidden;
    }

    .eval-header-bar {
      background: linear-gradient(90deg, #1e293b, #0f172a);
      color: #ffffff;
      padding: 22px 30px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }

    .eval-score-badge {
      display: flex;
      align-items: center;
      gap: 12px;
      background: rgba(255, 255, 255, 0.1);
      padding: 8px 18px;
      border-radius: 40px;
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    .stars {
      color: #fbbf24;
      font-size: 1.15rem;
      letter-spacing: 2px;
    }

    .score-num {
      font-size: 1.35rem;
      font-weight: 900;
      color: #ffffff;
    }

    .eval-table-wrapper {
      width: 100%;
      overflow-x: auto;
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

    .eval-table th, .eval-table td {
      padding: 16px 22px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.92rem;
    }

    .eval-table th {
      background: #f8fafc;
      color: #334155;
      font-weight: 800;
    }

    .eval-table tr:hover td {
      background: #f8fafc;
    }

    .col-highlight {
      background: #eff6ff !important;
      font-weight: 700;
      color: #1d4ed8;
      border-left: 2px solid #bfdbfe;
      border-right: 2px solid #bfdbfe;
    }

    /* Token 比价卡片区 */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .token-card {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      transition: all 0.25s ease;
    }

    .token-card.featured {
      border-color: var(--accent-orange);
      box-shadow: 0 10px 25px rgba(255, 87, 34, 0.15);
    }

    .token-badge {
      position: absolute;
      top: -12px;
      right: 20px;
      background: var(--accent-orange);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 800;
      padding: 2px 10px;
      border-radius: 20px;
    }

    .token-card h4 {
      font-size: 1.2rem;
      font-weight: 800;
      margin-bottom: 6px;
    }

    .token-price-box {
      margin: 16px 0;
      padding: 12px 0;
      border-top: 1px solid #f1f5f9;
      border-bottom: 1px solid #f1f5f9;
    }

    .token-price {
      font-size: 1.85rem;
      font-weight: 900;
      color: var(--primary);
    }
    .token-card.featured .token-price {
      color: var(--accent-orange);
    }

    .token-price-unit {
      font-size: 0.85rem;
      color: #64748b;
      font-weight: normal;
    }

    .token-features {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
      font-size: 0.88rem;
      color: #475569;
      margin-bottom: 20px;
    }

    /* 客户评价卡片 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .review-card {
      background: #ffffff;
      border: 1.5px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 22px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: var(--shadow-sm);
    }

    .review-text {
      font-size: 0.92rem;
      color: #334155;
      line-height: 1.6;
      margin-bottom: 18px;
      position: relative;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .author-avatar-text {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #e0f2fe;
      color: #0369a1;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 0.95rem;
      flex-shrink: 0;
    }

    .author-info h5 {
      font-size: 0.92rem;
      font-weight: 700;
      color: #0f172a;
    }

    .author-info span {
      font-size: 0.78rem;
      color: #64748b;
    }

    /* FAQ 手风琴 */
    .faq-wrapper {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: #ffffff;
      border: 1.5px solid #e2e8f0;
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.2s ease;
    }

    .faq-item:hover {
      border-color: #cbd5e1;
    }

    .faq-header {
      padding: 18px 22px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-weight: 700;
      font-size: 1rem;
      color: #1e293b;
      user-select: none;
    }

    .faq-icon-arrow {
      font-size: 0.9rem;
      transition: transform 0.25s ease;
      color: #94a3b8;
    }

    .faq-body {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out, padding 0.3s ease;
      padding: 0 22px;
      font-size: 0.92rem;
      color: #475569;
      line-height: 1.65;
      background: #fafafa;
    }

    .faq-item.active .faq-header {
      color: var(--primary);
    }
    .faq-item.active .faq-icon-arrow {
      transform: rotate(180deg);
      color: var(--primary);
    }
    .faq-item.active .faq-body {
      padding: 16px 22px 20px;
      max-height: 250px;
      border-top: 1px solid #f1f5f9;
    }

    /* 表单与需求匹配区 */
    .form-section-inner {
      background: #ffffff;
      border: 2px solid #e2e8f0;
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-lg);
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 36px;
    }

    .form-info h3 {
      font-size: 1.7rem;
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 14px;
    }

    .form-info p {
      font-size: 0.95rem;
      color: #475569;
      margin-bottom: 24px;
      line-height: 1.6;
    }

    .contact-item-group {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-bottom: 24px;
    }

    .contact-line {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.9rem;
      color: #1e293b;
      font-weight: 600;
    }

    .contact-icon-pill {
      background: #f1f5f9;
      padding: 4px 10px;
      border-radius: 6px;
      font-size: 0.8rem;
      color: var(--primary);
      font-weight: 700;
    }

    .qr-box-wrap {
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      background: #f8fafc;
      padding: 14px;
      border-radius: var(--radius-md);
      border: 1px solid #e2e8f0;
      width: fit-content;
    }

    .qr-box-wrap img {
      width: 110px;
      height: 110px;
      border-radius: 6px;
      display: block;
    }

    .qr-box-wrap span {
      font-size: 0.78rem;
      color: #475569;
      margin-top: 6px;
      font-weight: 600;
    }

    .submit-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group label {
      font-size: 0.88rem;
      font-weight: 700;
      color: #1e293b;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1.5px solid #cbd5e1;
      border-radius: var(--radius-sm);
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.2s ease;
      background: #ffffff;
      color: #0f172a;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }

    /* 行业资讯 & AI百科 */
    .article-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .article-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 18px;
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
    }

    .article-item:hover {
      border-color: var(--primary);
      background: #eff6ff;
      transform: translateX(4px);
    }

    .article-title-link {
      font-size: 0.92rem;
      font-weight: 600;
      color: #1e293b;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    /* 页面页脚 */
    .site-footer {
      background: #0f172a;
      color: #cbd5e1;
      padding: 50px 0 24px;
      border-top: 4px solid var(--primary);
      margin-top: 50px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 36px;
    }

    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 0.88rem;
      color: #94a3b8;
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .footer-col h5 {
      color: #ffffff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 14px;
      border-left: 3px solid var(--accent-orange);
      padding-left: 8px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
      font-size: 0.88rem;
    }

    .footer-links a {
      color: #94a3b8;
    }

    .footer-links a:hover {
      color: #38bdf8;
      padding-left: 4px;
    }

    .friend-links-box {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      margin-bottom: 24px;
    }

    .friend-links-title {
      font-size: 0.85rem;
      font-weight: 700;
      color: #94a3b8;
      margin-bottom: 10px;
    }

    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.84rem;
    }

    .friend-links-list a {
      color: #64748b;
      padding: 4px 8px;
      background: #1e293b;
      border-radius: 4px;
    }

    .friend-links-list a:hover {
      color: #ffffff;
      background: #334155;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 20px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
      color: #64748b;
    }

    /* 浮动客服挂件 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .floating-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1.5px solid #cbd5e1;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-md);
      cursor: pointer;
      position: relative;
      transition: all 0.25s ease;
      color: #1e293b;
      font-size: 1.15rem;
    }

    .floating-btn:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    .floating-qr-pop {
      display: none;
      position: absolute;
      right: 58px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      border: 1px solid #e2e8f0;
      width: 140px;
      text-align: center;
    }

    .floating-qr-pop img {
      width: 100%;
      height: auto;
      border-radius: 4px;
      display: block;
    }

    .floating-btn:hover .floating-qr-pop {
      display: block;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .form-section-inner {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 20px;
        border-bottom: 2px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
        width: 100%;
      }
      .grid-3, .grid-4, .grid-2, .review-grid, .token-grid, .intro-grid, .media-showcase-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }