/* ===== 基础重置 ===== */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    :root {
      --bg-base: #0b0714;
      --bg-deep: #100b1f;
      --bg-panel: #171028;
      --bg-card: #1d1436;
      --bg-card-hover: #251a44;
      --border-glow: rgba(190, 90, 255, 0.25);
      --border-subtle: rgba(150, 100, 255, 0.12);
      --text-primary: #f3eeff;
      --text-secondary: #b8a9d4;
      --text-muted: #8a7aa8;
      --accent-pink: #f04fa0;
      --accent-purple: #a855f7;
      --accent-cyan: #22d3ee;
      --accent-gradient: linear-gradient(135deg, #f04fa0 0%, #a855f7 50%, #6366f1 100%);
      --accent-gradient-soft: linear-gradient(135deg, rgba(240, 79, 160, 0.15), rgba(168, 85, 247, 0.15));
      --shadow-glow: 0 0 30px rgba(168, 85, 247, 0.15);
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-xl: 28px;
      --container-width: 1200px;
      --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
      background-color: var(--bg-base);
      background-image: 
        radial-gradient(ellipse 80% 50% at 50% -10%, rgba(168, 85, 247, 0.18) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 90% 30%, rgba(240, 79, 160, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse 50% 50% at 10% 70%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        linear-gradient(180deg, #0b0714 0%, #100b1f 40%, #120d24 70%, #0b0714 100%);
      background-attachment: fixed;
      color: var(--text-primary);
      line-height: 1.7;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

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

    ul {
      list-style: none;
    }

    /* ===== 顶部导航 ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(11, 7, 20, 0.78);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border-subtle);
      transition: background var(--transition), box-shadow var(--transition);
    }

    .site-header.scrolled {
      background: rgba(11, 7, 20, 0.94);
      box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 68px;
      gap: 16px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .brand .ai-page-logo {
      max-height: 36px;
      width: auto;
    }

    .brand-text {
      font-size: 1.15rem;
      font-weight: 700;
      letter-spacing: 1px;
      color: var(--text-primary);
      white-space: nowrap;
    }

    .brand-text .accent {
      color: var(--accent-pink);
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      flex-wrap: nowrap;
    }

    .nav-links a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.9rem;
      color: var(--text-secondary);
      border-radius: var(--radius-sm);
      transition: color var(--transition), background var(--transition);
      white-space: nowrap;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--text-primary);
      background: rgba(168, 85, 247, 0.12);
    }

    .nav-links a.ai-page-home-link {
      color: var(--accent-pink);
      font-weight: 600;
    }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      padding: 10px 22px;
      font-size: 0.9rem;
      font-weight: 600;
      border-radius: 50px;
      border: none;
      cursor: pointer;
      transition: all var(--transition);
      white-space: nowrap;
      position: relative;
      overflow: hidden;
    }

    .btn-primary {
      background: var(--accent-gradient);
      color: #fff;
      box-shadow: 0 4px 20px rgba(168, 85, 247, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 30px rgba(240, 79, 160, 0.45);
    }

    .btn-primary:active {
      transform: translateY(0);
    }

    .btn-outline {
      background: transparent;
      color: var(--text-primary);
      border: 1px solid var(--border-glow);
    }

    .btn-outline:hover {
      border-color: var(--accent-purple);
      background: rgba(168, 85, 247, 0.1);
      transform: translateY(-2px);
    }

    .btn-lg {
      padding: 14px 32px;
      font-size: 1rem;
    }

    .btn-block {
      width: 100%;
    }

    .mobile-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-glow);
      color: var(--text-primary);
      font-size: 1.4rem;
      cursor: pointer;
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      line-height: 1;
    }

    /* ===== 首屏 Hero ===== */
    .hero {
      position: relative;
      padding: 148px 0 90px;
      overflow: hidden;
      min-height: 100vh;
      display: flex;
      align-items: center;
    }

    .hero::before {
      content: '';
      position: absolute;
      top: -40%;
      left: 50%;
      transform: translateX(-50%);
      width: 900px;
      height: 900px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(168, 85, 247, 0.18) 0%, rgba(240, 79, 160, 0.06) 40%, transparent 70%);
      pointer-events: none;
      animation: heroGlow 8s ease-in-out infinite alternate;
    }

    @keyframes heroGlow {
      0% { opacity: 0.6; transform: translateX(-50%) scale(1); }
      100% { opacity: 1; transform: translateX(-50%) scale(1.15); }
    }

    .hero::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 200px;
      background: linear-gradient(180deg, transparent, var(--bg-base));
      pointer-events: none;
    }

    .hero-content {
      position: relative;
      z-index: 2;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: rgba(240, 79, 160, 0.1);
      border: 1px solid rgba(240, 79, 160, 0.3);
      border-radius: 50px;
      font-size: 0.82rem;
      color: var(--accent-pink);
      margin-bottom: 28px;
      letter-spacing: 0.5px;
      animation: fadeUp 0.8s ease both;
    }

    .hero-badge .dot {
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--accent-pink);
      box-shadow: 0 0 10px var(--accent-pink);
      animation: pulseDot 2s ease-in-out infinite;
    }

    @keyframes pulseDot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.8); }
    }

    .hero h1 {
      font-size: clamp(2rem, 5vw, 3.4rem);
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: 1px;
      margin-bottom: 20px;
      animation: fadeUp 0.8s 0.1s ease both;
    }

    .hero h1 .gradient-text {
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      display: inline-block;
    }

    /* 渐变文字安全性 */
    @supports not (-webkit-background-clip: text) {
      .hero h1 .gradient-text {
        color: var(--accent-pink);
        background: none;
        -webkit-text-fill-color: var(--accent-pink);
      }
    }

    .hero-sub {
      font-size: clamp(0.95rem, 1.6vw, 1.12rem);
      color: var(--text-secondary);
      max-width: 720px;
      margin: 0 auto 36px;
      line-height: 1.8;
      animation: fadeUp 0.8s 0.2s ease both;
    }

    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
      justify-content: center;
      margin-bottom: 56px;
      animation: fadeUp 0.8s 0.3s ease both;
    }

    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      width: 100%;
      max-width: 820px;
      animation: fadeUp 0.8s 0.4s ease both;
    }

    .metric-card {
      background: rgba(29, 20, 54, 0.7);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      padding: 20px 12px;
      text-align: center;
      transition: all var(--transition);
      backdrop-filter: blur(8px);
    }

    .metric-card:hover {
      border-color: var(--border-glow);
      transform: translateY(-4px);
      box-shadow: var(--shadow-glow);
    }

    .metric-num {
      font-size: 1.6rem;
      font-weight: 800;
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      margin-bottom: 4px;
    }

    @supports not (-webkit-background-clip: text) {
      .metric-num {
        color: var(--accent-pink);
        background: none;
        -webkit-text-fill-color: var(--accent-pink);
      }
    }

    .metric-label {
      font-size: 0.78rem;
      color: var(--text-muted);
      letter-spacing: 0.3px;
    }

    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(24px); }
      to { opacity: 1; transform: translateY(0); }
    }

    /* ===== 通用 Section ===== */
    section {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      margin-bottom: 52px;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 600;
      letter-spacing: 2px;
      color: var(--accent-pink);
      margin-bottom: 12px;
      text-transform: uppercase;
    }

    .section-header h2 {
      font-size: clamp(1.6rem, 3.2vw, 2.4rem);
      font-weight: 700;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }

    .section-header p {
      font-size: 0.95rem;
      color: var(--text-secondary);
      max-width: 680px;
      margin: 0 auto;
      line-height: 1.8;
    }

    /* 滚动渐入 */
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ===== 关于我们 ===== */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .about-text p {
      color: var(--text-secondary);
      margin-bottom: 18px;
      font-size: 0.95rem;
      line-height: 1.9;
    }

    .about-highlights {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-top: 24px;
    }

    .highlight-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      padding: 14px;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      transition: all var(--transition);
    }

    .highlight-item:hover {
      border-color: var(--border-glow);
      background: var(--bg-card-hover);
    }

    .highlight-icon {
      color: var(--accent-pink);
      font-size: 1.1rem;
      flex-shrink: 0;
      margin-top: 2px;
    }

    .highlight-item span {
      font-size: 0.88rem;
      color: var(--text-primary);
    }

    .about-visual {
      position: relative;
    }

    .about-visual .visual-box {
      background: var(--bg-panel);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-xl);
      padding: 32px;
      box-shadow: var(--shadow-glow);
      position: relative;
      overflow: hidden;
    }

    .about-visual .visual-box::before {
      content: '';
      position: absolute;
      top: -50%;
      right: -30%;
      width: 280px;
      height: 280px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(240, 79, 160, 0.15), transparent 70%);
      pointer-events: none;
    }

    .visual-stats {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      position: relative;
      z-index: 1;
    }

    .v-stat {
      text-align: center;
      padding: 16px 8px;
    }

    .v-stat .num {
      font-size: 1.8rem;
      font-weight: 800;
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    @supports not (-webkit-background-clip: text) {
      .v-stat .num {
        color: var(--accent-pink);
        background: none;
        -webkit-text-fill-color: var(--accent-pink);
      }
    }

    .v-stat .label {
      font-size: 0.78rem;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* ===== 服务能力 ===== */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      transition: all var(--transition);
      position: relative;
      overflow: hidden;
    }

    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: var(--accent-gradient);
      opacity: 0;
      transition: opacity var(--transition);
    }

    .service-card:hover {
      border-color: var(--border-glow);
      background: var(--bg-card-hover);
      transform: translateY(-6px);
      box-shadow: 0 12px 40px rgba(168, 85, 247, 0.12);
    }

    .service-card:hover::before {
      opacity: 1;
    }

    .service-icon {
      font-size: 1.8rem;
      margin-bottom: 16px;
      display: inline-block;
    }

    .service-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-primary);
    }

    .service-card p {
      font-size: 0.86rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* ===== 一站式制作 ===== */
    .workflow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .workflow-step {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 28px 20px;
      text-align: center;
      transition: all var(--transition);
      position: relative;
    }

    .workflow-step:hover {
      border-color: var(--border-glow);
      transform: translateY(-4px);
      box-shadow: var(--shadow-glow);
    }

    .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: rgba(168, 85, 247, 0.12);
      border: 1px solid var(--border-glow);
      color: var(--accent-pink);
      font-weight: 700;
      font-size: 1.05rem;
      margin-bottom: 16px;
    }

    .workflow-step h3 {
      font-size: 1rem;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .workflow-step p {
      font-size: 0.82rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* ===== 行业方案 / 标签云 ===== */
    .tags-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
    }

    .tag {
      display: inline-block;
      padding: 8px 18px;
      background: rgba(29, 20, 54, 0.8);
      border: 1px solid var(--border-subtle);
      border-radius: 50px;
      font-size: 0.85rem;
      color: var(--text-secondary);
      transition: all var(--transition);
      cursor: default;
    }

    .tag:hover {
      border-color: var(--accent-pink);
      color: var(--accent-pink);
      background: rgba(240, 79, 160, 0.08);
      transform: translateY(-2px);
    }

    /* ===== 服务网络 ===== */
    .network-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .network-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      transition: all var(--transition);
    }

    .network-card:hover {
      border-color: var(--border-glow);
      box-shadow: var(--shadow-glow);
      transform: translateY(-4px);
    }

    .network-card .region {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .network-card .region .dot-indicator {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-cyan);
      box-shadow: 0 0 8px var(--accent-cyan);
    }

    .network-card p {
      font-size: 0.85rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* ===== 标准流程时间线 ===== */
    .timeline {
      position: relative;
      max-width: 780px;
      margin: 0 auto;
      padding-left: 40px;
    }

    .timeline::before {
      content: '';
      position: absolute;
      left: 14px;
      top: 0;
      bottom: 0;
      width: 2px;
      background: linear-gradient(180deg, var(--accent-pink), var(--accent-purple), transparent);
    }

    .timeline-item {
      position: relative;
      margin-bottom: 36px;
      padding-left: 8px;
    }

    .timeline-item:last-child {
      margin-bottom: 0;
    }

    .timeline-item::before {
      content: '';
      position: absolute;
      left: -33px;
      top: 6px;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--accent-pink);
      box-shadow: 0 0 12px var(--accent-pink);
      border: 2px solid var(--bg-base);
    }

    .timeline-item h3 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .timeline-item p {
      font-size: 0.86rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* ===== 案例中心 ===== */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: all var(--transition);
    }

    .case-card:hover {
      border-color: var(--border-glow);
      transform: translateY(-6px);
      box-shadow: 0 12px 40px rgba(168, 85, 247, 0.15);
    }

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: var(--bg-panel);
      position: relative;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.05);
    }

    .case-body {
      padding: 20px;
    }

    .case-body h3 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }

    .case-body p {
      font-size: 0.84rem;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* ===== 对比评测 ===== */
    .compare-section {
      position: relative;
    }

    .compare-card {
      background: var(--bg-panel);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-xl);
      padding: 40px;
      box-shadow: var(--shadow-glow);
      max-width: 900px;
      margin: 0 auto 40px;
      text-align: center;
    }

    .compare-score {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 24px;
      flex-wrap: wrap;
      margin-bottom: 20px;
    }

    .score-big {
      font-size: 3.6rem;
      font-weight: 900;
      background: var(--accent-gradient);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      line-height: 1;
    }

    @supports not (-webkit-background-clip: text) {
      .score-big {
        color: var(--accent-pink);
        background: none;
        -webkit-text-fill-color: var(--accent-pink);
      }
    }

    .score-meta {
      text-align: left;
    }

    .score-meta .stars {
      color: #fbbf24;
      font-size: 1.2rem;
      letter-spacing: 3px;
      margin-bottom: 4px;
    }

    .score-meta .score-label {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .compare-card h2 {
      font-size: 1.4rem;
      margin-bottom: 12px;
    }

    .compare-card > p {
      color: var(--text-secondary);
      font-size: 0.92rem;
      max-width: 620px;
      margin: 0 auto;
    }

    .compare-table-wrap {
      overflow-x: auto;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-subtle);
      background: var(--bg-card);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 680px;
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      text-align: left;
      font-size: 0.88rem;
      border-bottom: 1px solid var(--border-subtle);
    }

    .compare-table thead th {
      background: rgba(168, 85, 247, 0.1);
      color: var(--text-primary);
      font-weight: 700;
      white-space: nowrap;
    }

    .compare-table tbody td {
      color: var(--text-secondary);
    }

    .compare-table tbody tr:last-child td {
      border-bottom: none;
    }

    .compare-table tbody tr:hover td {
      background: rgba(168, 85, 247, 0.04);
    }

    .compare-table .highlight-col {
      color: var(--accent-pink);
      font-weight: 600;
    }

    /* ===== 需求匹配 / 表单 ===== */
    .form-wrap {
      max-width: 720px;
      margin: 0 auto;
      background: var(--bg-panel);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-xl);
      padding: 40px;
      box-shadow: var(--shadow-glow);
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

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

    .form-group.full {
      grid-column: 1 / -1;
    }

    .form-group label {
      font-size: 0.84rem;
      color: var(--text-secondary);
      font-weight: 500;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 16px;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-sm);
      color: var(--text-primary);
      font-size: 0.9rem;
      font-family: inherit;
      transition: border-color var(--transition), box-shadow var(--transition);
      outline: none;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--accent-purple);
      box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.15);
    }

    .form-group textarea {
      resize: vertical;
      min-height: 100px;
    }

    .form-group select {
      appearance: none;
      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='%23b8a9d4' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 16px center;
      padding-right: 40px;
    }

    .form-group select option {
      background: var(--bg-card);
      color: var(--text-primary);
    }

    /* ===== Token 比价 ===== */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .token-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      transition: all var(--transition);
    }

    .token-card:hover {
      border-color: var(--border-glow);
      box-shadow: var(--shadow-glow);
      transform: translateY(-4px);
    }

    .token-card .model-name {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-primary);
    }

    .token-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 8px 0;
      border-bottom: 1px solid var(--border-subtle);
      font-size: 0.85rem;
    }

    .token-row:last-child {
      border-bottom: none;
    }

    .token-row .label {
      color: var(--text-muted);
    }

    .token-row .value {
      color: var(--accent-cyan);
      font-weight: 600;
      font-family: "SF Mono", "Fira Code", monospace;
      font-size: 0.8rem;
    }

    /* ===== 帮助中心 / FAQ ===== */
    .faq-list {
      max-width: 820px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color var(--transition);
    }

    .faq-item.active {
      border-color: var(--accent-purple);
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 22px;
      background: none;
      border: none;
      color: var(--text-primary);
      font-size: 0.95rem;
      font-weight: 600;
      text-align: left;
      cursor: pointer;
      font-family: inherit;
      transition: color var(--transition);
    }

    .faq-question:hover {
      color: var(--accent-pink);
    }

    .faq-icon {
      flex-shrink: 0;
      width: 24px;
      height: 24px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      background: rgba(168, 85, 247, 0.12);
      color: var(--accent-purple);
      font-size: 1rem;
      transition: transform var(--transition);
      line-height: 1;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.4s ease;
      padding: 0 22px;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 0 22px 20px;
    }

    .faq-answer p {
      font-size: 0.88rem;
      color: var(--text-secondary);
      line-height: 1.8;
    }

    /* ===== 用户评论 ===== */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      transition: all var(--transition);
      display: flex;
      flex-direction: column;
    }

    .review-card:hover {
      border-color: var(--border-glow);
      transform: translateY(-4px);
      box-shadow: var(--shadow-glow);
    }

    .review-stars {
      color: #fbbf24;
      font-size: 0.85rem;
      letter-spacing: 2px;
      margin-bottom: 14px;
    }

    .review-text {
      font-size: 0.88rem;
      color: var(--text-secondary);
      line-height: 1.8;
      flex: 1;
      margin-bottom: 18px;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-top: 16px;
      border-top: 1px solid var(--border-subtle);
    }

    .author-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--accent-gradient-soft);
      border: 1px solid var(--border-glow);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      flex-shrink: 0;
    }

    .author-info .name {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-primary);
    }

    .author-info .role {
      font-size: 0.76rem;
      color: var(--text-muted);
    }

    /* ===== 文章列表 ===== */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .article-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      transition: all var(--transition);
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .article-card:hover {
      border-color: var(--border-glow);
      transform: translateY(-4px);
      box-shadow: var(--shadow-glow);
    }

    .article-card .article-tag {
      display: inline-block;
      font-size: 0.72rem;
      padding: 3px 10px;
      border-radius: 50px;
      background: rgba(240, 79, 160, 0.1);
      color: var(--accent-pink);
      border: 1px solid rgba(240, 79, 160, 0.2);
      align-self: flex-start;
    }

    .article-card h3 {
      font-size: 1rem;
      font-weight: 700;
      line-height: 1.5;
    }

    .article-card p {
      font-size: 0.84rem;
      color: var(--text-secondary);
      line-height: 1.7;
      flex: 1;
    }

    .article-card .read-link {
      font-size: 0.84rem;
      color: var(--accent-pink);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: gap var(--transition);
      margin-top: 4px;
    }

    .article-card .read-link:hover {
      gap: 12px;
    }

    /* ===== 联系我们 / 加盟代理 ===== */
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: start;
    }

    .contact-info .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      margin-bottom: 22px;
    }

    .contact-item .ci-icon {
      font-size: 1.2rem;
      flex-shrink: 0;
      margin-top: 2px;
    }

    .contact-item .ci-label {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 2px;
    }

    .contact-item .ci-value {
      font-size: 0.92rem;
      color: var(--text-primary);
      font-weight: 500;
      word-break: break-all;
    }

    .contact-item .ci-value a {
      color: var(--accent-cyan);
      transition: color var(--transition);
    }

    .contact-item .ci-value a:hover {
      color: var(--accent-pink);
    }

    .qr-box {
      text-align: center;
      padding: 24px;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
    }

    .qr-box .qr-img {
      width: 160px;
      height: 160px;
      margin: 0 auto 12px;
      border-radius: var(--radius-sm);
      overflow: hidden;
      background: var(--bg-panel);
    }

    .qr-box .qr-img img {
      width: 100%;
      height: 100%;
      object-fit: contain;
    }

    .qr-box .qr-label {
      font-size: 0.82rem;
      color: var(--text-secondary);
    }

    /* ===== 友情链接 & 页脚 ===== */
    .friend-links {
      padding: 40px 0;
      border-top: 1px solid var(--border-subtle);
    }

    .friend-links-inner {
      display: flex;
      flex-wrap: wrap;
      gap: 10px 20px;
      align-items: center;
      justify-content: center;
    }

    .friend-links-inner .fl-title {
      font-size: 0.82rem;
      color: var(--text-muted);
      margin-right: 4px;
    }

    .friend-links-inner a {
      font-size: 0.82rem;
      color: var(--text-secondary);
      transition: color var(--transition);
    }

    .friend-links-inner a:hover {
      color: var(--accent-pink);
    }

    .site-footer {
      background: #08050e;
      border-top: 1px solid var(--border-subtle);
      padding: 48px 0 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 36px;
      padding-bottom: 36px;
    }

    .footer-brand .ai-page-logo {
      max-height: 32px;
      margin-bottom: 14px;
    }

    .footer-brand p {
      font-size: 0.84rem;
      color: var(--text-muted);
      line-height: 1.8;
      max-width: 320px;
    }

    .footer-col h4 {
      font-size: 0.88rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text-primary);
    }

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

    .footer-col ul li a {
      font-size: 0.84rem;
      color: var(--text-muted);
      transition: color var(--transition);
    }

    .footer-col ul li a:hover {
      color: var(--accent-pink);
    }

    .footer-bottom {
      border-top: 1px solid var(--border-subtle);
      padding: 20px 0;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
    }

    .footer-bottom p {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    .footer-bottom .footer-links {
      display: flex;
      gap: 20px;
    }

    .footer-bottom .footer-links a {
      font-size: 0.78rem;
      color: var(--text-muted);
      transition: color var(--transition);
    }

    .footer-bottom .footer-links a:hover {
      color: var(--accent-pink);
    }

    /* ===== 浮动客服 ===== */
    .float-service {
      position: fixed;
      right: 20px;
      bottom: 80px;
      z-index: 900;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      color: var(--text-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      cursor: pointer;
      transition: all var(--transition);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
      text-decoration: none;
    }

    .float-btn:hover {
      background: var(--accent-gradient);
      border-color: transparent;
      transform: translateY(-3px) scale(1.05);
      box-shadow: 0 8px 30px rgba(168, 85, 247, 0.4);
    }

    .back-top {
      position: fixed;
      right: 20px;
      bottom: 20px;
      z-index: 900;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      color: var(--text-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      cursor: pointer;
      transition: all var(--transition);
      opacity: 0;
      visibility: hidden;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    }

    .back-top.show {
      opacity: 1;
      visibility: visible;
    }

    .back-top:hover {
      background: var(--accent-gradient);
      border-color: transparent;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .services-grid,
      .cases-grid,
      .reviews-grid,
      .token-grid,
      .network-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .workflow-steps {
        grid-template-columns: repeat(2, 1fr);
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }

      .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .contact-grid {
        grid-template-columns: 1fr;
      }

      .hero-metrics {
        grid-template-columns: repeat(4, 1fr);
      }
    }

    @media (max-width: 900px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        width: 100%;
        flex-direction: column;
        background: rgba(11, 7, 20, 0.98);
        backdrop-filter: blur(18px);
        border-bottom: 1px solid var(--border-subtle);
        padding: 12px 24px;
        gap: 0;
      }

      .nav-links.open {
        display: flex;
      }

      .nav-links a {
        padding: 12px 14px;
        border-radius: var(--radius-sm);
        width: 100%;
      }

      .mobile-toggle {
        display: block;
      }

      .nav-cta .btn {
        display: none;
      }
    }

    @media (max-width: 768px) {
      section {
        padding: 56px 0;
      }

      .hero {
        padding: 120px 0 60px;
        min-height: auto;
      }

      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
      }

      .services-grid,
      .cases-grid,
      .reviews-grid,
      .token-grid,
      .network-grid,
      .workflow-steps,
      .articles-grid {
        grid-template-columns: 1fr;
      }

      .form-grid {
        grid-template-columns: 1fr;
      }

      .form-wrap {
        padding: 28px 20px;
      }

      .compare-card {
        padding: 28px 20px;
      }

      .compare-score {
        flex-direction: column;
        gap: 12px;
      }

      .score-meta {
        text-align: center;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }

      .about-highlights {
        grid-template-columns: 1fr;
      }

      .float-service {
        right: 12px;
        bottom: 72px;
      }

      .back-top {
        right: 12px;
        bottom: 16px;
      }

      .visual-stats {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 480px) {
      .container {
        padding: 0 16px;
      }

      .hero h1 {
        font-size: 1.7rem;
      }

      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }

      .hero-actions .btn {
        width: 100%;
      }

      .hero-metrics {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
      }

      .metric-card {
        padding: 14px 8px;
      }

      .metric-num {
        font-size: 1.3rem;
      }

      .timeline {
        padding-left: 30px;
      }

      .timeline-item::before {
        left: -23px;
      }
    }

    /* 减少动画偏好 */
    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
      }

      .reveal {
        opacity: 1;
        transform: none;
      }
    }