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

    :root {
      --primary: #2563eb;
      --primary-dark: #1d4ed8;
      --primary-light: #dbeafe;
      --accent: #f97316;
      --accent-light: #fff7ed;
      --bg-main: #f8fafc;
      --bg-white: #ffffff;
      --text-dark: #0f172a;
      --text-body: #334155;
      --text-muted: #64748b;
      --border-light: #e2e8f0;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
      --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
      --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
      --radius-md: 12px;
      --radius-lg: 20px;
      --radius-xl: 28px;
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }

    html {
      scroll-behavior: smooth;
      scroll-padding-top: 80px;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

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

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

    ul, ol {
      list-style: none;
    }

    /* ---------- 顶部导航 ---------- */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-light);
      transition: box-shadow 0.3s ease;
    }

    .site-header.scrolled {
      box-shadow: var(--shadow-md);
    }

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

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

    .brand img {
      width: 38px;
      height: 38px;
      border-radius: 8px;
      object-fit: contain;
    }

    .brand-name {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-dark);
      letter-spacing: 0.5px;
      white-space: nowrap;
    }

    .nav-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border-light);
      border-radius: 8px;
      padding: 8px 10px;
      cursor: pointer;
      flex-direction: column;
      gap: 4px;
      align-items: center;
      justify-content: center;
    }

    .nav-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--text-dark);
      border-radius: 2px;
      transition: all 0.3s ease;
    }

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

    .nav-links a {
      display: block;
      padding: 8px 14px;
      font-size: 14.5px;
      font-weight: 500;
      color: var(--text-body);
      border-radius: 8px;
      white-space: nowrap;
      transition: color 0.2s ease, background 0.2s ease;
    }

    .nav-links a:hover {
      color: var(--primary);
      background: var(--primary-light);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-family: var(--font-sans);
      font-weight: 600;
      border: none;
      cursor: pointer;
      border-radius: 10px;
      transition: all 0.25s ease;
      text-align: center;
      line-height: 1.4;
    }

    .btn-primary {
      background: var(--primary);
      color: #ffffff;
      padding: 10px 22px;
      font-size: 14.5px;
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
    }

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

    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 1.5px solid var(--primary);
      padding: 10px 22px;
      font-size: 14.5px;
    }

    .btn-outline:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }

    .btn-accent {
      background: var(--accent);
      color: #ffffff;
      padding: 12px 28px;
      font-size: 16px;
    }

    .btn-accent:hover {
      background: #ea580c;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(249, 115, 22, 0.35);
    }

    .btn-lg {
      padding: 14px 34px;
      font-size: 17px;
      border-radius: 12px;
    }

    /* ---------- Hero首屏 ---------- */
    .hero {
      position: relative;
      background: linear-gradient(160deg, #f0f7ff 0%, #e8f0fe 35%, #fdf6ee 100%);
      padding: 80px 0 90px;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      width: 560px;
      height: 560px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(37, 99, 235, 0.10) 0%, transparent 70%);
      top: -180px;
      right: -120px;
      animation: float 9s ease-in-out infinite;
    }

    .hero::after {
      content: '';
      position: absolute;
      width: 420px;
      height: 420px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(249, 115, 22, 0.08) 0%, transparent 70%);
      bottom: -150px;
      left: -100px;
      animation: float 11s ease-in-out infinite reverse;
    }

    @keyframes float {
      0%, 100% { transform: translate(0, 0); }
      50% { transform: translate(20px, -20px); }
    }

    .hero-inner {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(37, 99, 235, 0.10);
      color: var(--primary);
      font-size: 14px;
      font-weight: 600;
      padding: 6px 18px;
      border-radius: 100px;
      margin-bottom: 24px;
      border: 1px solid rgba(37, 99, 235, 0.18);
    }

    .hero-badge .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.35; }
    }

    .hero h1 {
      font-size: clamp(28px, 4.5vw, 46px);
      font-weight: 900;
      color: var(--text-dark);
      line-height: 1.28;
      letter-spacing: -0.02em;
      margin-bottom: 20px;
    }

    .hero h1 em {
      font-style: normal;
      color: var(--primary);
      position: relative;
    }

    .hero-sub {
      font-size: clamp(15px, 1.8vw, 18px);
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto 34px;
      line-height: 1.8;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      justify-content: center;
      margin-bottom: 50px;
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      max-width: 760px;
      margin: 0 auto;
    }

    .hero-stat {
      background: rgba(255, 255, 255, 0.7);
      border: 1px solid rgba(255, 255, 255, 0.9);
      backdrop-filter: blur(8px);
      border-radius: var(--radius-md);
      padding: 18px 10px;
      text-align: center;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

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

    .hero-stat strong {
      display: block;
      font-size: clamp(22px, 3vw, 30px);
      font-weight: 900;
      color: var(--primary);
      line-height: 1.2;
    }

    .hero-stat span {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* ---------- 通用section ---------- */
    .section {
      padding: 80px 0;
    }

    .section-alt {
      background: var(--bg-white);
    }

    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 52px;
    }

    .section-label {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 1.5px;
      text-transform: uppercase;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 14px;
      border-radius: 100px;
      margin-bottom: 16px;
    }

    .section-header h2 {
      font-size: clamp(24px, 3.2vw, 36px);
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.35;
      margin-bottom: 14px;
      letter-spacing: -0.02em;
    }

    .section-header p {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* ---------- 关于我们/平台介绍 ---------- */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: flex-start;
    }

    .about-text h2 {
      font-size: clamp(24px, 3vw, 34px);
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.35;
      margin-bottom: 20px;
    }

    .about-text p {
      font-size: 15.5px;
      color: var(--text-body);
      margin-bottom: 16px;
      line-height: 1.85;
    }

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

    .highlight-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      background: var(--bg-main);
      border-radius: 10px;
      padding: 14px 16px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-dark);
      transition: background 0.25s ease, transform 0.25s ease;
    }

    .highlight-item:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }

    .highlight-item .check {
      flex-shrink: 0;
      width: 20px;
      height: 20px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      font-weight: 700;
      margin-top: 2px;
    }

    .about-visual {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .about-visual img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      width: 100%;
      object-fit: cover;
      transition: transform 0.35s ease, box-shadow 0.35s ease;
    }

    .about-visual img:hover {
      transform: scale(1.015);
      box-shadow: var(--shadow-lg);
    }

    .about-visual .img-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .about-visual .img-row img {
      aspect-ratio: 4 / 3;
      object-fit: cover;
    }

    /* ---------- AIGC服务能力卡片 ---------- */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .service-card {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 28px 24px;
      transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(37, 99, 235, 0.25);
    }

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 18px;
      background: var(--primary-light);
      color: var(--primary);
    }

    .service-card:nth-child(3n+2) .service-icon {
      background: #fef3c7;
      color: #d97706;
    }

    .service-card:nth-child(3n+3) .service-icon {
      background: #fce7f3;
      color: #db2777;
    }

    .service-card h3 {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* ---------- 一站式制作 ---------- */
    .craft-layout {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: stretch;
    }

    .craft-steps {
      display: flex;
      flex-direction: column;
      gap: 0;
    }

    .craft-step {
      display: flex;
      gap: 18px;
      position: relative;
      padding-bottom: 32px;
    }

    .craft-step:last-child {
      padding-bottom: 0;
    }

    .craft-step::before {
      content: '';
      position: absolute;
      left: 19px;
      top: 42px;
      bottom: 0;
      width: 2px;
      background: var(--border-light);
    }

    .craft-step:last-child::before {
      display: none;
    }

    .step-num {
      flex-shrink: 0;
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 15px;
      position: relative;
      z-index: 1;
    }

    .step-body h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 4px;
    }

    .step-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .craft-visual {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .craft-visual img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      object-fit: cover;
      width: 100%;
      transition: transform 0.35s ease;
    }

    .craft-visual img:hover {
      transform: scale(1.02);
    }

    .craft-visual img.square {
      aspect-ratio: 1 / 1;
    }

    /* ---------- 行业方案 ---------- */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .solution-item {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px 22px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .solution-item:hover {
      border-color: var(--primary);
      background: #f8faff;
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }

    .solution-item h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-dark);
    }

    .solution-item p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 36px;
    }

    .tag-cloud span {
      display: inline-block;
      padding: 6px 16px;
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: 100px;
      font-size: 13px;
      font-weight: 500;
      color: var(--text-body);
      transition: all 0.25s ease;
      cursor: default;
    }

    .tag-cloud span:hover {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    /* ---------- 服务网络 ---------- */
    .network-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
    }

    .network-card {
      text-align: center;
      padding: 30px 16px;
      background: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      transition: all 0.3s ease;
    }

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

    .network-card .icon-circle {
      width: 54px;
      height: 54px;
      border-radius: 50%;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 14px;
      font-size: 22px;
    }

    .network-card h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 6px;
    }

    .network-card p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* ---------- 标准流程 ---------- */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 14px;
      position: relative;
    }

    .process-item {
      text-align: center;
      padding: 26px 12px;
      background: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      position: relative;
      transition: all 0.3s ease;
    }

    .process-item:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }

    .process-item .num-badge {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 15px;
      margin: 0 auto 12px;
    }

    .process-item h4 {
      font-size: 14.5px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 6px;
    }

    .process-item p {
      font-size: 12.5px;
      color: var(--text-muted);
      line-height: 1.6;
    }

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

    .case-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-light);
      transition: all 0.35s ease;
    }

    .case-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }

    .case-card .case-img {
      width: 100%;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: #f1f5f9;
    }

    .case-card .case-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.45s ease;
    }

    .case-card:hover .case-img img {
      transform: scale(1.06);
    }

    .case-card .case-body {
      padding: 20px 20px 24px;
    }

    .case-card .case-body h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }

    .case-card .case-body p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* ---------- 对比评测 ---------- */
    .compare-wrapper {
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      background: var(--bg-white);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 740px;
      font-size: 14.5px;
    }

    .compare-table thead th {
      background: var(--primary);
      color: #fff;
      font-weight: 700;
      padding: 16px 18px;
      text-align: left;
      font-size: 14px;
      white-space: nowrap;
    }

    .compare-table thead th:first-child {
      border-radius: var(--radius-lg) 0 0 0;
    }

    .compare-table thead th:last-child {
      border-radius: 0 var(--radius-lg) 0 0;
    }

    .compare-table tbody td {
      padding: 14px 18px;
      border-bottom: 1px solid var(--border-light);
      color: var(--text-body);
      white-space: nowrap;
    }

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

    .compare-table tbody tr:hover {
      background: #f8faff;
    }

    .compare-table .highlight-col {
      background: #eff6ff;
      font-weight: 600;
      color: var(--primary-dark);
    }

    .compare-table .star {
      color: #f59e0b;
      letter-spacing: 2px;
    }

    .compare-table .score {
      font-weight: 800;
      font-size: 16px;
      color: var(--primary);
    }

    .compare-note {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: center;
      gap: 20px;
      margin-top: 28px;
      padding: 20px 28px;
      background: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
    }

    .compare-note .score-big {
      font-size: 28px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .compare-note .score-label {
      font-size: 14px;
      color: var(--text-muted);
    }

    .compare-note .stars {
      color: #f59e0b;
      font-size: 22px;
      letter-spacing: 3px;
    }

    /* ---------- 用户评论 ---------- */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .review-card {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 26px 22px;
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

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

    .review-stars {
      color: #f59e0b;
      font-size: 15px;
      letter-spacing: 2px;
      margin-bottom: 12px;
    }

    .review-text {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.8;
      flex: 1;
      margin-bottom: 18px;
    }

    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .review-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-light), #e0e7ff);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 16px;
      color: var(--primary-dark);
      flex-shrink: 0;
    }

    .review-author-info strong {
      display: block;
      font-size: 14px;
      font-weight: 700;
      color: var(--text-dark);
    }

    .review-author-info span {
      font-size: 12.5px;
      color: var(--text-muted);
    }

    /* ---------- Token比价 + FAQ/帮助 ---------- */
    .token-price-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: flex-start;
    }

    .price-card {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
    }

    .price-card h3 {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 8px;
    }

    .price-card .sub {
      font-size: 14px;
      color: var(--text-muted);
      margin-bottom: 24px;
    }

    .price-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 14px 0;
      border-bottom: 1px dashed var(--border-light);
      font-size: 14.5px;
    }

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

    .price-row .model-name {
      font-weight: 600;
      color: var(--text-dark);
    }

    .price-row .price-tag {
      font-weight: 700;
      color: var(--primary);
      background: var(--primary-light);
      padding: 2px 12px;
      border-radius: 100px;
      font-size: 13px;
    }

    .help-card {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
    }

    .help-card h3 {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 18px;
    }

    .help-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .help-item {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.65;
    }

    .help-item .help-icon {
      flex-shrink: 0;
      width: 26px;
      height: 26px;
      border-radius: 8px;
      background: var(--accent-light);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
      font-weight: 700;
      margin-top: 2px;
    }

    /* ---------- 文章列表 ---------- */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .article-card {
      display: flex;
      flex-direction: column;
      gap: 8px;
      padding: 22px 24px;
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      transition: all 0.3s ease;
    }

    .article-card:hover {
      border-color: var(--primary);
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .article-card .article-tag {
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      letter-spacing: 0.8px;
    }

    .article-card h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-dark);
      line-height: 1.5;
    }

    .article-card p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .article-card .read-more {
      font-size: 13.5px;
      font-weight: 600;
      color: var(--primary);
      margin-top: 6px;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* ---------- FAQ ---------- */
    .faq-list {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: border-color 0.25s ease;
    }

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

    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      padding: 18px 22px;
      cursor: pointer;
      font-weight: 600;
      font-size: 15px;
      color: var(--text-dark);
      background: none;
      border: none;
      width: 100%;
      text-align: left;
      font-family: var(--font-sans);
      transition: background 0.2s ease;
    }

    .faq-question:hover {
      background: #f8faff;
    }

    .faq-question .faq-icon {
      flex-shrink: 0;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      font-weight: 700;
      transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      background: var(--primary);
      color: #fff;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 22px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.8;
    }

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

    /* ---------- 需求表单 ---------- */
    .form-layout {
      display: grid;
      grid-template-columns: 0.85fr 1.15fr;
      gap: 40px;
      align-items: flex-start;
    }

    .form-info h3 {
      font-size: clamp(22px, 2.6vw, 30px);
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 14px;
      line-height: 1.35;
    }

    .form-info p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 24px;
    }

    .contact-channels {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .contact-channel {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: var(--text-body);
      padding: 12px 16px;
      background: var(--bg-main);
      border-radius: 10px;
      transition: background 0.2s ease;
    }

    .contact-channel:hover {
      background: var(--primary-light);
    }

    .contact-channel .ch-icon {
      flex-shrink: 0;
      width: 34px;
      height: 34px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
    }

    .contact-channel strong {
      color: var(--text-dark);
      font-weight: 600;
    }

    .form-box {
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 6px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1.5px solid var(--border-light);
      border-radius: 10px;
      font-size: 14.5px;
      font-family: var(--font-sans);
      color: var(--text-dark);
      background: var(--bg-main);
      transition: border-color 0.25s ease, box-shadow 0.25s ease;
      outline: none;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
      background: #fff;
    }

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

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .form-submit {
      width: 100%;
      margin-top: 4px;
    }

    /* ---------- 页脚 ---------- */
    .site-footer {
      background: #0f172a;
      color: #cbd5e1;
      padding: 56px 0 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 36px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.10);
    }

    .footer-brand {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

    .footer-brand .brand-name {
      color: #ffffff;
      font-size: 20px;
      font-weight: 800;
    }

    .footer-brand p {
      font-size: 13.5px;
      color: #94a3b8;
      line-height: 1.8;
      max-width: 300px;
    }

    .footer-qr {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-top: 4px;
    }

    .footer-qr img {
      width: 80px;
      height: 80px;
      border-radius: 8px;
      object-fit: cover;
      border: 2px solid rgba(255, 255, 255, 0.12);
    }

    .footer-qr span {
      font-size: 12.5px;
      color: #94a3b8;
      line-height: 1.7;
    }

    .footer-col h4 {
      font-size: 14px;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
      letter-spacing: 0.5px;
    }

    .footer-col ul {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-col ul li a {
      font-size: 13.5px;
      color: #94a3b8;
      transition: color 0.2s ease;
    }

    .footer-col ul li a:hover {
      color: #ffffff;
    }

    .footer-contact-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .footer-contact-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 13.5px;
      color: #94a3b8;
    }

    .footer-contact-list .fc-icon {
      flex-shrink: 0;
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
    }

    .footer-friend-links {
      padding: 22px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-friend-links .friend-label {
      font-size: 13px;
      font-weight: 600;
      color: #ffffff;
      margin-bottom: 10px;
    }

    .footer-friend-links .links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 8px 20px;
    }

    .footer-friend-links .links-wrap a {
      font-size: 13px;
      color: #7c8ba1;
      transition: color 0.2s ease;
    }

    .footer-friend-links .links-wrap a:hover {
      color: #ffffff;
    }

    .footer-bottom {
      padding: 22px 0;
      text-align: center;
      font-size: 12.5px;
      color: #64748b;
      line-height: 1.8;
    }

    .footer-bottom a {
      color: #94a3b8;
      transition: color 0.2s ease;
    }

    .footer-bottom a:hover {
      color: #ffffff;
    }

    /* ---------- 浮动客服/返回顶部 ---------- */
    .float-tools {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 90;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--bg-white);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 18px;
      color: var(--primary);
      transition: all 0.25s ease;
    }

    .float-btn:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-3px);
      border-color: var(--primary);
    }

    .float-btn.contact {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }

    .float-btn.contact:hover {
      background: var(--primary-dark);
    }

    .contact-popup {
      position: fixed;
      right: 80px;
      bottom: 30px;
      z-index: 91;
      background: var(--bg-white);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-light);
      padding: 20px;
      width: 240px;
      display: none;
      text-align: center;
    }

    .contact-popup.active {
      display: block;
      animation: popIn 0.25s ease;
    }

    @keyframes popIn {
      from { opacity: 0; transform: translateY(8px) scale(0.96); }
      to { opacity: 1; transform: translateY(0) scale(1); }
    }

    .contact-popup h4 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 12px;
    }

    .contact-popup img {
      width: 160px;
      height: 160px;
      border-radius: 8px;
      margin: 0 auto 10px;
      object-fit: cover;
    }

    .contact-popup p {
      font-size: 12.5px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* ---------- 滚动渐入 ---------- */
    .reveal {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.65s ease, transform 0.65s ease;
    }

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

    /* ---------- 响应式 ---------- */
    @media (max-width: 1024px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--bg-white);
        border-bottom: 1px solid var(--border-light);
        box-shadow: var(--shadow-md);
        padding: 12px 20px 20px;
        gap: 2px;
        z-index: 99;
      }

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

      .nav-links a {
        padding: 10px 12px;
        font-size: 15px;
        border-radius: 8px;
        white-space: normal;
      }

      .nav-toggle {
        display: flex;
      }

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

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

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

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

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

      .process-timeline {
        grid-template-columns: repeat(3, 1fr);
      }

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

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

    @media (max-width: 768px) {
      .hero {
        padding: 60px 0 70px;
      }

      .section {
        padding: 60px 0;
      }

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

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

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

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

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

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

      .process-timeline {
        grid-template-columns: 1fr 1fr;
      }

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

      .craft-layout {
        grid-template-columns: 1fr;
      }

      .token-price-layout {
        grid-template-columns: 1fr;
      }

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

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

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

      .compare-note {
        flex-direction: column;
        text-align: center;
        gap: 12px;
      }

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

      .hero-actions .btn {
        width: 100%;
        max-width: 300px;
      }
    }

    @media (max-width: 520px) {
      .container {
        padding: 0 16px;
      }

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

      .hero-stat {
        padding: 14px 8px;
      }

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

      .process-timeline {
        grid-template-columns: 1fr;
      }

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

      .float-tools {
        right: 12px;
        bottom: 16px;
      }

      .contact-popup {
        right: 70px;
        bottom: 16px;
        width: 210px;
      }

      .compare-table {
        min-width: 640px;
        font-size: 13px;
      }

      .compare-table thead th,
      .compare-table tbody td {
        padding: 10px 12px;
      }
    }