/* =================== 全局基础与涂鸦风格色彩规范 =================== */
    :root {
      --bg-page: #fbfbf6;
      --bg-card: #ffffff;
      --bg-card-alt: #f4f6ea;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --border-dark: #1e293b;
      --primary: #4f46e5;
      --primary-light: #e0e7ff;
      --accent-yellow: #fde047;
      --accent-pink: #f472b6;
      --accent-teal: #2dd4bf;
      --accent-orange: #fb923c;
      --accent-green: #86efac;
      --shadow-doodle: 4px 4px 0px #1e293b;
      --shadow-doodle-lg: 6px 6px 0px #1e293b;
      --shadow-doodle-hover: 2px 2px 0px #1e293b;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: var(--font-stack);
      background-color: var(--bg-page);
      background-image: 
        radial-gradient(circle at 12px 12px, #e2e8f0 1.5px, transparent 0),
        radial-gradient(circle at 48px 48px, #e2e8f0 1.5px, transparent 0);
      background-size: 60px 60px;
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

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

    /* =================== 统一主容器规范 =================== */
    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    .section {
      padding: 70px 0;
      position: relative;
    }

    .section-alt {
      background-color: #faf7f2;
      border-top: 2px dashed #cbd5e1;
      border-bottom: 2px dashed #cbd5e1;
    }

    /* 标题与眉标装饰 */
    .section-header {
      text-align: center;
      margin-bottom: 45px;
    }

    .doodle-badge {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.85rem;
      font-weight: 800;
      letter-spacing: 0.5px;
      border-radius: var(--radius-full);
      border: 2px solid var(--border-dark);
      background: var(--accent-yellow);
      box-shadow: 2px 2px 0px var(--border-dark);
      margin-bottom: 12px;
      transform: rotate(-1.5deg);
    }

    .doodle-badge.pink { background: var(--accent-pink); color: #fff; transform: rotate(1.2deg); }
    .doodle-badge.teal { background: var(--accent-teal); transform: rotate(-1deg); }
    .doodle-badge.green { background: var(--accent-green); transform: rotate(1.5deg); }
    .doodle-badge.orange { background: var(--accent-orange); color: #fff; }

    .section-title {
      font-size: 2rem;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 10px;
      position: relative;
      display: inline-block;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
    }

    /* 涂鸦卡片容器与微交互 */
    .doodle-card {
      background: var(--bg-card);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-doodle);
      padding: 24px;
      transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
      position: relative;
    }

    .doodle-card:hover {
      transform: translate(-2px, -2px);
      box-shadow: var(--shadow-doodle-lg);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 800;
      font-size: 1rem;
      padding: 12px 26px;
      border-radius: var(--radius-md);
      border: 2px solid var(--border-dark);
      box-shadow: var(--shadow-doodle);
      cursor: pointer;
      transition: all 0.15s ease;
      text-align: center;
      line-height: 1;
    }

    .btn:hover {
      transform: translate(2px, 2px);
      box-shadow: var(--shadow-doodle-hover);
    }

    .btn-primary {
      background: #4f46e5;
      color: #ffffff;
    }

    .btn-yellow {
      background: var(--accent-yellow);
      color: var(--text-main);
    }

    .btn-pink {
      background: var(--accent-pink);
      color: #ffffff;
    }

    .btn-outline {
      background: #ffffff;
      color: var(--text-main);
    }

    /* =================== 顶部导航 =================== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(251, 251, 246, 0.96);
      backdrop-filter: blur(8px);
      border-bottom: 2px solid var(--border-dark);
    }

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

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

    .brand-logo-box {
      width: 44px;
      height: 44px;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-sm);
      overflow: hidden;
      background: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 2px 2px 0px var(--border-dark);
    }

    .brand-text {
      font-size: 1.35rem;
      font-weight: 900;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

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

    .nav-links li a {
      font-weight: 700;
      font-size: 0.92rem;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      color: var(--text-main);
      transition: all 0.15s ease;
      display: inline-block;
    }

    .nav-links li a:hover {
      background: var(--accent-yellow);
      border: 1.5px solid var(--border-dark);
      box-shadow: 2px 2px 0px var(--border-dark);
      transform: translateY(-2px);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .nav-toggle {
      display: none;
      background: #fff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-sm);
      padding: 6px 10px;
      font-size: 1.2rem;
      cursor: pointer;
      box-shadow: 2px 2px 0px var(--border-dark);
    }

    /* =================== 首屏 HERO (无图片) =================== */
    .hero-section {
      padding: 70px 0 50px 0;
      text-align: center;
      position: relative;
    }

    .hero-container {
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-tag-bar {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 2px solid var(--border-dark);
      box-shadow: var(--shadow-doodle);
      padding: 6px 16px;
      border-radius: var(--radius-full);
      font-size: 0.9rem;
      font-weight: 800;
      margin-bottom: 24px;
      transform: rotate(-0.5deg);
    }

    .hero-tag-bar span.badge-dot {
      width: 10px;
      height: 10px;
      background: var(--accent-teal);
      border: 1.5px solid var(--border-dark);
      border-radius: 50%;
      display: inline-block;
    }

    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-highlight {
      background: linear-gradient(120deg, var(--accent-yellow) 0%, var(--accent-yellow) 100%);
      background-repeat: no-repeat;
      background-size: 100% 40%;
      background-position: 0 88%;
      display: inline-block;
      padding: 0 4px;
    }

    .hero-subtitle {
      font-size: 1.18rem;
      color: #334155;
      font-weight: 500;
      max-width: 760px;
      margin: 0 auto 32px auto;
      line-height: 1.65;
    }

    .hero-cta-group {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 45px;
    }

    .btn-hero-main {
      font-size: 1.15rem;
      padding: 15px 36px;
      background: #4f46e5;
      color: #ffffff;
      box-shadow: var(--shadow-doodle-lg);
    }

    .btn-hero-main:hover {
      background: #4338ca;
    }

    /* 首屏数据指标卡片 (纯几何/数字排版，无图片) */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 20px;
    }

    .stat-card {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 18px 12px;
      box-shadow: var(--shadow-doodle);
      text-align: center;
      position: relative;
    }

    .stat-num {
      font-size: 1.75rem;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 4px;
      font-family: inherit;
    }

    .stat-label {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-muted);
    }

    /* =================== 平台模型矩阵 (AI百科) =================== */
    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 20px;
    }

    .model-pill {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-full);
      padding: 6px 14px;
      font-size: 0.86rem;
      font-weight: 800;
      box-shadow: 2px 2px 0px var(--border-dark);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: transform 0.15s ease;
    }

    .model-pill:hover {
      transform: translateY(-2px) rotate(1deg);
      background: var(--accent-yellow);
    }

    /* =================== 平台介绍 / 关于我们 =================== */
    .intro-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .intro-card {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-doodle);
    }

    .intro-icon-box {
      width: 52px;
      height: 52px;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      margin-bottom: 16px;
      box-shadow: 2px 2px 0px var(--border-dark);
    }

    .intro-card h3 {
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .intro-card p {
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* =================== AIGC 核心业务卡片矩阵 =================== */
    .service-cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-doodle);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-header-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 14px;
    }

    .service-tag {
      font-size: 0.75rem;
      font-weight: 800;
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      border: 1.5px solid var(--border-dark);
      background: var(--bg-card-alt);
    }

    .service-card h3 {
      font-size: 1.2rem;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.55;
      margin-bottom: 16px;
      flex-grow: 1;
    }

    .service-feature-list {
      list-style: none;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
      border-top: 1.5px dashed #e2e8f0;
      padding-top: 12px;
    }

    .service-feature-list li {
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    /* =================== 一站式制作全流程 =================== */
    .flow-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-card {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-doodle);
      position: relative;
    }

    .step-badge {
      position: absolute;
      top: -14px;
      left: 20px;
      background: var(--accent-yellow);
      border: 2px solid var(--border-dark);
      font-size: 0.8rem;
      font-weight: 900;
      padding: 2px 10px;
      border-radius: var(--radius-full);
      box-shadow: 2px 2px 0px var(--border-dark);
    }

    .step-card h3 {
      font-size: 1.15rem;
      font-weight: 800;
      margin-top: 10px;
      margin-bottom: 8px;
    }

    .step-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* =================== 案例中心与图片素材区 =================== */
    .banner-gallery-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-bottom: 24px;
    }

    .gallery-img-box {
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      background: #ffffff;
      box-shadow: var(--shadow-doodle);
    }

    .gallery-img-box img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      transition: transform 0.3s ease;
    }

    .gallery-img-box:hover img {
      transform: scale(1.05);
    }

    .case-materials-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 20px;
    }

    .material-item {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 16px;
      box-shadow: var(--shadow-doodle);
    }

    .material-item h4 {
      font-size: 1rem;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .material-item-imgs {
      display: flex;
      gap: 12px;
    }

    .material-item-imgs img {
      border-radius: var(--radius-sm);
      border: 1.5px solid var(--border-dark);
      max-height: 160px;
      object-fit: cover;
    }

    /* =================== 对比评测 (必须包含9.9分推荐) =================== */
    .review-score-banner {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-doodle-lg);
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 28px;
      flex-wrap: wrap;
      gap: 20px;
    }

    .score-left {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    .score-badge-circle {
      width: 72px;
      height: 72px;
      background: var(--accent-yellow);
      border: 2.5px solid var(--border-dark);
      border-radius: 50%;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      box-shadow: 3px 3px 0px var(--border-dark);
    }

    .score-val {
      font-size: 1.6rem;
      font-weight: 900;
      line-height: 1;
    }

    .score-scale {
      font-size: 0.65rem;
      font-weight: 800;
      color: var(--text-muted);
    }

    .score-title-box h3 {
      font-size: 1.35rem;
      font-weight: 900;
      margin-bottom: 4px;
    }

    .score-stars {
      color: #f59e0b;
      font-size: 1.2rem;
      font-weight: 900;
    }

    .compare-table-wrap {
      overflow-x: auto;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-doodle);
      background: #ffffff;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1.5px solid #e2e8f0;
    }

    .compare-table th {
      background: #f8fafc;
      font-weight: 900;
      color: var(--text-main);
      border-bottom: 2px solid var(--border-dark);
    }

    .compare-table tr:hover {
      background: #fdfdf8;
    }

    .compare-table .highlight-col {
      background: #f0fdf4;
      font-weight: 800;
      color: #166534;
    }

    /* =================== Token 比价参考 =================== */
    .token-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .token-card {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--shadow-doodle);
      text-align: center;
    }

    .token-title {
      font-size: 1.15rem;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .token-price {
      font-size: 1.6rem;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 6px;
    }

    .token-desc {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 16px;
    }

    /* =================== 需求匹配与表单 =================== */
    .form-wrapper-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 32px;
      align-items: stretch;
    }

    .form-info-box {
      background: var(--accent-yellow);
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-doodle);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .form-info-box h3 {
      font-size: 1.6rem;
      font-weight: 900;
      margin-bottom: 14px;
    }

    .form-card {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-doodle);
    }

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

    .form-label {
      display: block;
      font-weight: 800;
      font-size: 0.92rem;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 0.95rem;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-sm);
      background: #ffffff;
      font-family: inherit;
      color: var(--text-main);
      box-shadow: 2px 2px 0px #e2e8f0;
      outline: none;
      transition: all 0.15s ease;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 2px 2px 0px var(--border-dark);
    }

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

    /* =================== 6条用户评论 =================== */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

    .review-card {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 22px;
      box-shadow: var(--shadow-doodle);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-user-row {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .user-avatar-tag {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      border: 2px solid var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 1rem;
      box-shadow: 2px 2px 0px var(--border-dark);
    }

    .user-meta h4 {
      font-size: 1rem;
      font-weight: 800;
    }

    .user-meta span {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .review-content {
      font-size: 0.92rem;
      color: #334155;
      line-height: 1.6;
    }

    /* =================== FAQ 折叠面板 =================== */
    .faq-accordion-wrap {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-doodle);
      overflow: hidden;
    }

    .faq-btn {
      width: 100%;
      padding: 18px 24px;
      text-align: left;
      background: transparent;
      border: none;
      font-size: 1.05rem;
      font-weight: 800;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-btn::after {
      content: "+";
      font-size: 1.4rem;
      font-weight: 900;
      transition: transform 0.2s ease;
    }

    .faq-item.active .faq-btn::after {
      content: "−";
    }

    .faq-content {
      padding: 0 24px 20px 24px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.65;
      display: none;
    }

    .faq-item.active .faq-content {
      display: block;
    }

    /* =================== 资讯与友情链接 =================== */
    .news-links-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 24px;
    }

    .news-list-box, .friend-links-box {
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-doodle);
    }

    .article-links-container {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 14px;
    }

    .article-link-chip {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px 14px;
      background: #f8fafc;
      border: 1.5px solid var(--border-dark);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      font-weight: 700;
      transition: all 0.15s ease;
    }

    .article-link-chip:hover {
      background: var(--accent-yellow);
      transform: translateX(4px);
    }

    .friend-links-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 14px;
    }

    .friend-links-flex a {
      display: inline-block;
      padding: 6px 14px;
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-full);
      font-size: 0.88rem;
      font-weight: 800;
      box-shadow: 2px 2px 0px var(--border-dark);
      transition: all 0.15s ease;
    }

    .friend-links-flex a:hover {
      background: var(--accent-pink);
      color: #ffffff;
      transform: translateY(-2px);
    }

    /* =================== 页脚与联系方式 =================== */
    .site-footer {
      background: #ffffff;
      border-top: 2px solid var(--border-dark);
      padding: 50px 0 30px 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 1.1rem;
      font-weight: 900;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .footer-col ul {
      list-style: none;
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    .footer-col ul li {
      margin-bottom: 8px;
    }

    .footer-qr-box {
      width: 110px;
      height: 110px;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-sm);
      padding: 4px;
      background: #ffffff;
      box-shadow: var(--shadow-doodle);
      margin-top: 8px;
    }

    .footer-bottom {
      border-top: 2px dashed #cbd5e1;
      padding-top: 24px;
      text-align: center;
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 600;
    }

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

    .float-btn {
      width: 48px;
      height: 48px;
      background: #ffffff;
      border: 2px solid var(--border-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      box-shadow: var(--shadow-doodle);
      cursor: pointer;
      font-size: 1.1rem;
      transition: transform 0.15s ease;
    }

    .float-btn:hover {
      background: var(--accent-yellow);
      transform: scale(1.1);
    }

    /* =================== 响应式适配 =================== */
    @media (max-width: 992px) {
      .hero-title { font-size: 2.2rem; }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .intro-grid { grid-template-columns: 1fr; }
      .service-cards-grid { grid-template-columns: repeat(2, 1fr); }
      .flow-steps-grid { grid-template-columns: repeat(2, 1fr); }
      .banner-gallery-grid { grid-template-columns: repeat(2, 1fr); }
      .case-materials-grid { grid-template-columns: 1fr; }
      .token-grid { grid-template-columns: repeat(2, 1fr); }
      .form-wrapper-grid { grid-template-columns: 1fr; }
      .reviews-grid { grid-template-columns: 1fr; }
      .news-links-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 2px solid var(--border-dark);
        padding: 20px;
        flex-direction: column;
        align-items: flex-start;
      }
      .nav-links.active { display: flex; }
      .nav-toggle { display: block; }
      .hero-title { font-size: 1.85rem; }
      .service-cards-grid { grid-template-columns: 1fr; }
      .flow-steps-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }