/* ===== 全局与变量 ===== */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    :root {
      --bg-page: #f5f7fc;
      --bg-card: #ffffff;
      --bg-soft: #eef2fa;
      --text-main: #121a2b;
      --text-sub: #3e4a62;
      --text-muted: #6b7a93;
      --primary: #4c6ef5;
      --primary-glow: #7c4dff;
      --accent: #00d4ff;
      --accent-soft: #e0f0ff;
      --border: #dbe2f0;
      --shadow-sm: 0 2px 12px rgba(20, 30, 80, 0.06);
      --shadow-md: 0 12px 32px rgba(20, 30, 80, 0.10);
      --shadow-glow: 0 8px 40px rgba(76, 110, 245, 0.18);
      --radius: 16px;
      --radius-sm: 10px;
      --container: 1200px;
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: var(--font);
      background-color: var(--bg-page);
      background-image:
        radial-gradient(ellipse 80% 50% at 50% -10%, rgba(76, 110, 245, 0.08), transparent),
        radial-gradient(ellipse 60% 40% at 85% 20%, rgba(0, 212, 255, 0.05), transparent),
        radial-gradient(ellipse 50% 40% at 10% 60%, rgba(124, 77, 255, 0.05), transparent);
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    img {
      display: block;
      max-width: 100%;
      height: auto;
    }
    ul, ol {
      list-style: none;
    }
    .container {
      width: 100%;
      max-width: var(--container);
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .section {
      padding: 72px 0;
    }
    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 44px;
    }
    .section-eyebrow {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 1.5px;
      color: var(--primary);
      background: rgba(76, 110, 245, 0.08);
      padding: 6px 16px;
      border-radius: 20px;
      margin-bottom: 14px;
    }
    .section-title {
      font-size: 30px;
      font-weight: 700;
      line-height: 1.3;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-sub);
      line-height: 1.7;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 15px;
      font-weight: 600;
      padding: 13px 28px;
      border-radius: 12px;
      border: 1px solid transparent;
      cursor: pointer;
      transition: all 0.25s ease;
      line-height: 1.4;
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-glow) 100%);
      color: #ffffff;
      box-shadow: 0 6px 20px rgba(76, 110, 245, 0.32);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 28px rgba(76, 110, 245, 0.42);
    }
    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
      border-color: var(--border);
      box-shadow: var(--shadow-sm);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }
    .btn-ghost {
      background: rgba(255, 255, 255, 0.7);
      color: var(--text-main);
      border: 1px solid rgba(255, 255, 255, 0.9);
      backdrop-filter: blur(6px);
    }
    .btn-ghost:hover {
      background: #ffffff;
      transform: translateY(-2px);
    }

    /* ===== 顶部导航 ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(245, 247, 252, 0.85);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(219, 226, 240, 0.6);
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 68px;
      gap: 24px;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .brand img {
      height: 34px;
      width: auto;
      max-width: 120px;
      object-fit: contain;
    }
    .brand-name {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: 0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      flex: 1;
      justify-content: center;
      flex-wrap: wrap;
    }
    .nav-links a {
      font-size: 14px;
      color: var(--text-sub);
      font-weight: 500;
      padding: 8px 12px;
      border-radius: 8px;
      transition: all 0.2s ease;
      white-space: nowrap;
    }
    .nav-links a:hover {
      color: var(--primary);
      background: rgba(76, 110, 245, 0.07);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .nav-actions .btn {
      padding: 9px 18px;
      font-size: 13px;
      border-radius: 9px;
    }
    .mobile-toggle {
      display: none;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 40px;
      height: 40px;
      background: transparent;
      border: 1px solid var(--border);
      border-radius: 9px;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-toggle span {
      display: block;
      height: 2px;
      width: 100%;
      background: var(--text-main);
      border-radius: 2px;
      transition: 0.25s ease;
    }
    .mobile-toggle.active span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }
    .mobile-toggle.active span:nth-child(2) {
      opacity: 0;
    }
    .mobile-toggle.active span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    /* ===== 首屏 Hero ===== */
    .hero {
      position: relative;
      padding: 84px 0 96px;
      overflow: hidden;
      background: linear-gradient(180deg, #eef3ff 0%, #f5f7fc 60%, var(--bg-page) 100%);
    }
    .hero::before {
      content: "";
      position: absolute;
      top: -30%;
      right: -10%;
      width: 640px;
      height: 640px;
      background: radial-gradient(circle, rgba(76, 110, 245, 0.16) 0%, transparent 65%);
      border-radius: 50%;
      pointer-events: none;
    }
    .hero::after {
      content: "";
      position: absolute;
      bottom: -20%;
      left: -8%;
      width: 520px;
      height: 520px;
      background: radial-gradient(circle, rgba(0, 212, 255, 0.12) 0%, transparent 65%);
      border-radius: 50%;
      pointer-events: none;
    }
    .hero-inner {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background: rgba(255, 255, 255, 0.8);
      border: 1px solid rgba(76, 110, 245, 0.2);
      padding: 7px 16px;
      border-radius: 30px;
      margin-bottom: 22px;
      backdrop-filter: blur(6px);
    }
    .hero-badge .dot {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 0 4px rgba(76, 110, 245, 0.2);
      animation: pulseDot 2s infinite;
    }
    @keyframes pulseDot {
      0%, 100% { box-shadow: 0 0 0 4px rgba(76, 110, 245, 0.2); }
      50% { box-shadow: 0 0 0 8px rgba(76, 110, 245, 0.08); }
    }
    .hero h1 {
      font-size: 46px;
      line-height: 1.22;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--text-main);
      margin-bottom: 20px;
    }
    .hero h1 .highlight {
      background: linear-gradient(120deg, #4c6ef5 0%, #7c4dff 50%, #00d4ff 100%);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
      color: var(--primary);
    }
    .hero-sub {
      font-size: 16px;
      color: var(--text-sub);
      line-height: 1.75;
      margin-bottom: 18px;
      max-width: 520px;
    }
    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 32px;
    }
    .hero-tags span {
      font-size: 12.5px;
      font-weight: 500;
      color: var(--text-sub);
      background: rgba(255, 255, 255, 0.7);
      border: 1px solid var(--border);
      padding: 6px 13px;
      border-radius: 8px;
      transition: all 0.2s ease;
    }
    .hero-tags span:hover {
      border-color: var(--primary);
      color: var(--primary);
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }
    .hero-visual {
      position: relative;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .stat-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .stat-card {
      background: rgba(255, 255, 255, 0.85);
      border: 1px solid rgba(219, 226, 240, 0.9);
      border-radius: var(--radius);
      padding: 22px 20px;
      box-shadow: var(--shadow-sm);
      backdrop-filter: blur(10px);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-glow);
    }
    .stat-card .stat-value {
      font-size: 30px;
      font-weight: 800;
      line-height: 1.2;
      background: linear-gradient(135deg, #4c6ef5, #7c4dff);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .stat-card .stat-label {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }
    .hero-note-card {
      background: linear-gradient(135deg, rgba(76, 110, 245, 0.08), rgba(0, 212, 255, 0.06));
      border: 1px dashed rgba(76, 110, 245, 0.3);
      border-radius: var(--radius);
      padding: 20px 22px;
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .hero-note-card .icon {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background: linear-gradient(135deg, #4c6ef5, #7c4dff);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 18px;
      font-weight: 700;
      flex-shrink: 0;
    }
    .hero-note-card p {
      font-size: 13.5px;
      color: var(--text-sub);
      line-height: 1.6;
    }
    .hero-note-card strong {
      color: var(--text-main);
    }

    /* ===== 关于我们 ===== */
    .about-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: stretch;
    }
    .about-text {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 36px 34px;
      box-shadow: var(--shadow-sm);
    }
    .about-text h3 {
      font-size: 22px;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-main);
    }
    .about-text p {
      font-size: 14.5px;
      color: var(--text-sub);
      line-height: 1.8;
      margin-bottom: 14px;
    }
    .about-text p:last-child {
      margin-bottom: 0;
    }
    .about-features {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .feature-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 18px 20px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .feature-item:hover {
      transform: translateX(4px);
      box-shadow: var(--shadow-md);
    }
    .feature-item .f-icon {
      width: 38px;
      height: 38px;
      border-radius: 10px;
      background: rgba(76, 110, 245, 0.1);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      font-weight: 700;
      flex-shrink: 0;
    }
    .feature-item h4 {
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 3px;
      color: var(--text-main);
    }
    .feature-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* ===== 服务能力 ===== */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }
    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px 20px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
      position: relative;
      overflow: hidden;
    }
    .service-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      opacity: 0;
      transition: opacity 0.28s ease;
    }
    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-glow);
      border-color: rgba(76, 110, 245, 0.35);
    }
    .service-card:hover::before {
      opacity: 1;
    }
    .service-card .s-icon {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(76, 110, 245, 0.12), rgba(0, 212, 255, 0.12));
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .service-card h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .service-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* ===== 流程步骤 ===== */
    .steps-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      counter-reset: step;
    }
    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 28px 22px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .step-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .step-num {
      width: 48px;
      height: 48px;
      margin: 0 auto 16px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--primary-glow));
      color: #fff;
      font-size: 18px;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 16px rgba(76, 110, 245, 0.3);
    }
    .step-card h4 {
      font-size: 15.5px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .step-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* ===== 案例展示 ===== */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .case-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .case-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-glow);
    }
    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: var(--bg-soft);
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .case-card:hover .case-img-wrap img {
      transform: scale(1.04);
    }
    .case-body {
      padding: 18px 20px 22px;
    }
    .case-body h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .case-body p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 12px;
    }
    .case-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 500;
      color: var(--primary);
      background: rgba(76, 110, 245, 0.08);
      padding: 4px 12px;
      border-radius: 6px;
    }

    /* ===== 对比评测 ===== */
    .compare-wrap {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 32px;
      align-items: start;
    }
    .rating-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 34px 30px;
      box-shadow: var(--shadow-sm);
      text-align: center;
    }
    .rating-card .score {
      font-size: 64px;
      font-weight: 800;
      line-height: 1;
      background: linear-gradient(135deg, #4c6ef5, #7c4dff);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
      color: var(--primary);
    }
    .rating-card .score-total {
      font-size: 16px;
      color: var(--text-muted);
      margin-left: 4px;
      font-weight: 500;
    }
    .rating-card .stars {
      color: #ffb400;
      font-size: 22px;
      letter-spacing: 3px;
      margin: 12px 0 6px;
    }
    .rating-card .rating-label {
      font-size: 14px;
      color: var(--text-sub);
      font-weight: 600;
      margin-bottom: 24px;
    }
    .rating-detail {
      display: flex;
      flex-direction: column;
      gap: 12px;
      text-align: left;
    }
    .rating-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13.5px;
      color: var(--text-sub);
      padding: 8px 0;
      border-bottom: 1px dashed var(--border);
    }
    .rating-item:last-child {
      border-bottom: none;
    }
    .rating-item span:last-child {
      font-weight: 700;
      color: var(--primary);
    }
    .compare-table-wrap {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 6px;
      box-shadow: var(--shadow-sm);
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 13.5px;
      min-width: 480px;
    }
    .compare-table thead th {
      text-align: left;
      padding: 14px 16px;
      font-weight: 700;
      color: var(--text-main);
      background: var(--bg-soft);
      font-size: 13.5px;
    }
    .compare-table thead th:first-child {
      border-radius: 10px 0 0 10px;
    }
    .compare-table thead th:last-child {
      border-radius: 0 10px 10px 0;
      color: var(--primary);
    }
    .compare-table tbody td {
      padding: 13px 16px;
      border-bottom: 1px solid var(--border);
      color: var(--text-sub);
    }
    .compare-table tbody tr:last-child td {
      border-bottom: none;
    }
    .compare-table tbody td:last-child {
      color: var(--primary);
      font-weight: 600;
    }

    /* ===== 评论卡片 ===== */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .review-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px 22px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      gap: 14px;
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .review-stars {
      color: #ffb400;
      font-size: 15px;
      letter-spacing: 2px;
    }
    .review-text {
      font-size: 13.5px;
      color: var(--text-sub);
      line-height: 1.75;
      flex: 1;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-top: 12px;
      border-top: 1px solid var(--border);
    }
    .review-avatar {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--primary-glow));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 700;
      flex-shrink: 0;
    }
    .review-user-info h4 {
      font-size: 13.5px;
      font-weight: 600;
      color: var(--text-main);
    }
    .review-user-info p {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* ===== Token 比价 & 表格 ===== */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .token-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px 22px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .token-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .token-model {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .token-model .tag {
      font-size: 11px;
      font-weight: 600;
      background: rgba(0, 212, 255, 0.14);
      color: #007a9e;
      padding: 2px 8px;
      border-radius: 5px;
    }
    .token-price-row {
      display: flex;
      justify-content: space-between;
      font-size: 13px;
      color: var(--text-muted);
      padding: 7px 0;
      border-bottom: 1px dashed var(--border);
    }
    .token-price-row:last-child {
      border-bottom: none;
    }
    .token-price-row span:last-child {
      font-weight: 700;
      color: var(--primary);
    }

    /* ===== FAQ ===== */
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .faq-item.active {
      border-color: rgba(76, 110, 245, 0.4);
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 22px;
      cursor: pointer;
      font-size: 14.5px;
      font-weight: 600;
      color: var(--text-main);
      user-select: none;
      transition: color 0.2s ease;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-question .faq-arrow {
      flex-shrink: 0;
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: var(--bg-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      color: var(--text-muted);
      transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
    }
    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
      background: var(--primary);
      color: #fff;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease;
    }
    .faq-answer-inner {
      padding: 0 22px 20px;
      font-size: 13.5px;
      color: var(--text-sub);
      line-height: 1.75;
    }

    /* ===== 文章 & 资讯 ===== */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .article-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 22px 20px;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .article-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .article-card .art-cat {
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      background: rgba(76, 110, 245, 0.08);
      padding: 3px 10px;
      border-radius: 5px;
      align-self: flex-start;
    }
    .article-card h3 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
      line-height: 1.5;
    }
    .article-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.65;
      flex: 1;
    }
    .article-card .art-link {
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 4px;
      transition: gap 0.2s ease;
    }
    .article-card .art-link:hover {
      gap: 8px;
    }

    /* ===== 表单 ===== */
    .form-wrap {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: start;
    }
    .form-info h3 {
      font-size: 24px;
      font-weight: 700;
      margin-bottom: 14px;
      color: var(--text-main);
    }
    .form-info p {
      font-size: 14.5px;
      color: var(--text-sub);
      line-height: 1.8;
      margin-bottom: 20px;
    }
    .contact-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: var(--text-sub);
    }
    .contact-item .c-icon {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: rgba(76, 110, 245, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 700;
      flex-shrink: 0;
    }
    .contact-item a {
      color: var(--primary);
      font-weight: 500;
    }
    .contact-item a:hover {
      text-decoration: underline;
    }
    .form-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 32px 30px;
      box-shadow: var(--shadow-sm);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 7px;
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 14px;
      font-size: 14px;
      font-family: var(--font);
      color: var(--text-main);
      background: var(--bg-page);
      border: 1px solid var(--border);
      border-radius: 10px;
      outline: none;
      transition: border-color 0.25s ease, box-shadow 0.25s ease;
      -webkit-appearance: none;
      appearance: none;
    }
    .form-group select {
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7a93' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 14px center;
      padding-right: 36px;
    }
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(76, 110, 245, 0.12);
      background: #fff;
    }
    .form-group textarea {
      resize: vertical;
      min-height: 100px;
    }
    .form-submit {
      width: 100%;
      padding: 14px;
      font-size: 15px;
      font-weight: 700;
      border: none;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--primary), var(--primary-glow));
      color: #fff;
      cursor: pointer;
      transition: all 0.25s ease;
      box-shadow: 0 6px 20px rgba(76, 110, 245, 0.3);
    }
    .form-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 28px rgba(76, 110, 245, 0.4);
    }

    /* ===== 二维码 & 联系方式 ===== */
    .qr-section {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 40px;
    }
    .qr-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 26px 22px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .qr-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .qr-card .qr-img-wrap {
      width: 140px;
      height: 140px;
      margin: 0 auto 14px;
      border-radius: 12px;
      overflow: hidden;
      border: 1px solid var(--border);
      background: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .qr-card .qr-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }
    .qr-card h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .qr-card p {
      font-size: 12.5px;
      color: var(--text-muted);
    }

    /* ===== 友情链接 & 页脚 ===== */
    .footer {
      background: #0f172a;
      color: #e2e8f0;
      padding: 48px 0 0;
      margin-top: 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 36px;
      padding-bottom: 36px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .footer-brand .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 14px;
    }
    .footer-brand .footer-logo img {
      height: 30px;
      width: auto;
      max-width: 110px;
      object-fit: contain;
      filter: brightness(1.1);
    }
    .footer-brand .footer-logo span {
      font-size: 17px;
      font-weight: 700;
      color: #ffffff;
    }
    .footer-brand p {
      font-size: 13px;
      color: #94a3b8;
      line-height: 1.7;
      margin-bottom: 10px;
    }
    .footer-brand .footer-email {
      font-size: 13px;
      color: #94a3b8;
    }
    .footer-brand .footer-email a {
      color: var(--accent);
    }
    .footer h4 {
      font-size: 14px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 14px;
    }
    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 9px;
    }
    .footer-links a {
      font-size: 13px;
      color: #94a3b8;
      transition: color 0.2s ease;
    }
    .footer-links a:hover {
      color: var(--accent);
    }
    .footer-bottom {
      padding: 20px 0;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      font-size: 12.5px;
      color: #64748b;
    }
    .footer-bottom p {
      color: #64748b;
    }
    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 8px 18px;
      padding: 16px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .friend-links a {
      font-size: 12.5px;
      color: #94a3b8;
      transition: color 0.2s ease;
    }
    .friend-links a:hover {
      color: var(--accent);
    }

    /* ===== 浮动客服 & 返回顶部 ===== */
    .float-contact {
      position: fixed;
      right: 20px;
      bottom: 88px;
      z-index: 200;
    }
    .float-contact-btn {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--primary-glow));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      border: none;
      cursor: pointer;
      box-shadow: 0 8px 24px rgba(76, 110, 245, 0.4);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .float-contact-btn:hover {
      transform: scale(1.08);
      box-shadow: 0 12px 32px rgba(76, 110, 245, 0.5);
    }
    .contact-pop {
      position: absolute;
      right: 64px;
      bottom: 0;
      width: 200px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: 14px;
      box-shadow: var(--shadow-md);
      opacity: 0;
      pointer-events: none;
      transform: translateY(8px);
      transition: all 0.25s ease;
    }
    .float-contact.open .contact-pop {
      opacity: 1;
      pointer-events: auto;
      transform: translateY(0);
    }
    .contact-pop p {
      font-size: 12.5px;
      color: var(--text-sub);
      margin-bottom: 10px;
      line-height: 1.5;
    }
    .contact-pop img {
      width: 100%;
      border-radius: 8px;
    }
    .back-top {
      position: fixed;
      right: 20px;
      bottom: 24px;
      z-index: 200;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--bg-card);
      border: 1px solid var(--border);
      color: var(--text-sub);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      cursor: pointer;
      box-shadow: var(--shadow-sm);
      opacity: 0;
      pointer-events: none;
      transform: translateY(8px);
      transition: all 0.3s ease;
    }
    .back-top.show {
      opacity: 1;
      pointer-events: auto;
      transform: translateY(0);
    }
    .back-top:hover {
      color: var(--primary);
      border-color: var(--primary);
    }

    /* ===== 滚动渐入 ===== */
    .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .hero h1 { font-size: 38px; }
      .hero-inner { grid-template-columns: 1fr; gap: 40px; }
      .hero-visual { max-width: 560px; }
      .about-grid { grid-template-columns: 1fr; }
      .service-grid { grid-template-columns: repeat(2, 1fr); }
      .steps-row { grid-template-columns: repeat(2, 1fr); }
      .case-grid { grid-template-columns: repeat(2, 1fr); }
      .compare-wrap { grid-template-columns: 1fr; }
      .review-grid { grid-template-columns: repeat(2, 1fr); }
      .token-grid { grid-template-columns: repeat(2, 1fr); }
      .article-grid { grid-template-columns: repeat(2, 1fr); }
      .form-wrap { grid-template-columns: 1fr; }
      .qr-section { grid-template-columns: repeat(3, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
      .nav-links { display: none; }
      .nav-links.open {
        display: flex;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--border);
        padding: 16px 20px;
        gap: 4px;
        box-shadow: var(--shadow-md);
        align-items: flex-start;
        z-index: 99;
      }
      .nav-links.open a {
        width: 100%;
        padding: 11px 14px;
        font-size: 14.5px;
        border-radius: 8px;
      }
      .mobile-toggle { display: flex; }
      .nav-actions .btn-outline { display: none; }
    }
    @media (max-width: 768px) {
      .section { padding: 52px 0; }
      .hero { padding: 56px 0 64px; }
      .hero h1 { font-size: 30px; }
      .hero-sub { font-size: 14.5px; }
      .section-title { font-size: 24px; }
      .service-grid { grid-template-columns: 1fr 1fr; }
      .steps-row { grid-template-columns: 1fr 1fr; }
      .case-grid { grid-template-columns: 1fr; }
      .review-grid { grid-template-columns: 1fr; }
      .token-grid { grid-template-columns: 1fr; }
      .article-grid { grid-template-columns: 1fr; }
      .qr-section { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 28px; }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .hero-actions .btn { width: 100%; }
      .form-card { padding: 24px 20px; }
      .stat-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
      .stat-card { padding: 16px 14px; }
      .stat-card .stat-value { font-size: 24px; }
      .footer-bottom { flex-direction: column; align-items: flex-start; }
    }
    @media (max-width: 480px) {
      .hero h1 { font-size: 26px; }
      .service-grid { grid-template-columns: 1fr; }
      .steps-row { grid-template-columns: 1fr; }
      .stat-grid { grid-template-columns: 1fr 1fr; }
      .brand-name { font-size: 16px; }
      .nav-wrap { gap: 12px; }
      .nav-actions .btn { padding: 8px 12px; font-size: 12px; }
    }