:root {
      --primary: #ff4d00;
      --primary-light: #fff3ec;
      --secondary: #0047ff;
      --secondary-light: #e8f0fe;
      --accent: #00d084;
      --dark: #0f172a;
      --text: #1e293b;
      --muted: #64748b;
      --bg: #fafbfc;
      --card-bg: #ffffff;
      --border: #e2e8f0;
      --border-accent: #ffbba6;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(255, 77, 0, 0.08), 0 8px 10px -6px rgba(0, 71, 255, 0.05);
      --shadow-hover: 0 20px 30px -10px rgba(15, 23, 42, 0.12);
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg);
      color: var(--text);
      line-height: 1.6;
      overflow-x: hidden;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    /* 容器规范贯穿全页 */
    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }

    /* Header & 导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid #ffefe8;
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }

    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .brand-logo-slot {
      height: 44px;
      display: flex;
      align-items: center;
    }

    .brand-logo-slot img {
      max-height: 44px;
      width: auto;
      display: block;
    }

    .brand-text {
      font-size: 20px;
      font-weight: 800;
      letter-spacing: -0.5px;
      color: var(--dark);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .brand-badge {
      background: linear-gradient(135deg, var(--primary), #ff7a00);
      color: #fff;
      font-size: 11px;
      padding: 2px 8px;
      border-radius: 999px;
      font-weight: 600;
    }

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

    .nav-links li a {
      font-size: 15px;
      font-weight: 600;
      color: var(--dark);
      padding: 8px 14px;
      border-radius: 6px;
      display: inline-block;
    }

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      text-align: center;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--primary);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(255, 77, 0, 0.35);
    }

    .btn-primary:hover {
      background: #e04400;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(255, 77, 0, 0.45);
    }

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

    .btn-secondary:hover {
      background: #0036c7;
      transform: translateY(-2px);
    }

    .btn-outline {
      border: 2px solid var(--dark);
      background: #ffffff;
      color: var(--dark);
    }

    .btn-outline:hover {
      background: var(--dark);
      color: #ffffff;
      transform: translateY(-2px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .mobile-menu-btn span {
      display: block;
      width: 24px;
      height: 3px;
      background: var(--dark);
      margin: 4px 0;
      transition: var(--transition);
    }

    /* 首屏 Hero - 无图片规范，纯色+几何碰撞+明艳视觉 */
    .hero-section {
      padding: 70px 0 60px;
      background: radial-gradient(circle at 85% 15%, rgba(255, 77, 0, 0.08) 0%, transparent 40%),
                  radial-gradient(circle at 10% 90%, rgba(0, 71, 255, 0.06) 0%, transparent 40%),
                  #ffffff;
      border-bottom: 1px solid var(--border);
      position: relative;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.25fr 0.95fr;
      gap: 40px;
      align-items: center;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #fff0ea;
      border: 1px solid #ffd1c2;
      color: var(--primary);
      padding: 6px 14px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 20px;
    }

    .hero-tag .dot {
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
      animation: pulse 1.8s infinite;
    }

    @keyframes pulse {
      0% { transform: scale(0.9); opacity: 0.8; }
      50% { transform: scale(1.3); opacity: 1; }
      100% { transform: scale(0.9); opacity: 0.8; }
    }

    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 900;
      color: var(--dark);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }

    .hero-title .highlight-orange {
      color: var(--primary);
      position: relative;
      display: inline-block;
    }

    .hero-title .highlight-blue {
      color: var(--secondary);
    }

    .hero-desc {
      font-size: 17px;
      color: var(--muted);
      line-height: 1.7;
      margin-bottom: 30px;
    }

    .hero-btns {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }

    .hero-btns .btn-portal {
      font-size: 17px;
      padding: 14px 34px;
      background: linear-gradient(135deg, #ff4d00, #ff6b26);
      box-shadow: 0 8px 24px rgba(255, 77, 0, 0.4);
    }

    .hero-visual-card {
      background: #ffffff;
      border: 2px solid #eef2f6;
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: 0 16px 36px -10px rgba(0, 0, 0, 0.08);
      position: relative;
    }

    .hero-visual-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      padding-bottom: 12px;
      border-bottom: 1px solid #f1f5f9;
    }

    .model-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 20px;
    }

    .pill {
      font-size: 12px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 6px;
      background: #f1f5f9;
      color: #334155;
    }

    .pill.pill-blue { background: #e0eaff; color: #0047ff; }
    .pill.pill-orange { background: #ffece5; color: #ff4d00; }
    .pill.pill-green { background: #e6f9f0; color: #00a86b; }

    .matrix-display {
      background: #0f172a;
      color: #f8fafc;
      border-radius: var(--radius-md);
      padding: 18px;
      font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
      font-size: 13px;
      line-height: 1.6;
      margin-bottom: 18px;
    }

    .matrix-display span.key { color: #38bdf8; }
    .matrix-display span.val { color: #4ade80; }
    .matrix-display span.tag { color: #fbbf24; }

    .hero-stats-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      text-align: center;
    }

    .hero-stat-item {
      background: #f8fafc;
      padding: 12px 6px;
      border-radius: var(--radius-sm);
      border: 1px solid #edf2f7;
    }

    .hero-stat-number {
      font-size: 22px;
      font-weight: 800;
      color: var(--primary);
    }

    .hero-stat-label {
      font-size: 12px;
      color: var(--muted);
      font-weight: 600;
    }

    /* 通用章节规范 */
    .section {
      padding: 72px 0;
      position: relative;
    }

    .section-alt {
      background-color: #f4f6fb;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 52px;
    }

    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--primary);
      background: var(--primary-light);
      padding: 4px 12px;
      border-radius: 999px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }

    .section-subtitle {
      font-size: 16px;
      color: var(--muted);
      line-height: 1.6;
    }

    /* 平台介绍 */
    .intro-box {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .intro-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 24px;
      margin-top: 28px;
    }

    .intro-item {
      padding: 20px;
      border-radius: var(--radius-md);
      background: #fafbfc;
      border-left: 4px solid var(--secondary);
    }

    .intro-item h3 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--dark);
    }

    .intro-item p {
      font-size: 14px;
      color: var(--muted);
    }

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

    .service-card {
      background: #ffffff;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-md);
      padding: 28px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 20px;
      margin-bottom: 20px;
    }

    .icon-orange { background: #ffe9df; color: var(--primary); }
    .icon-blue { background: #e3ebff; color: var(--secondary); }
    .icon-green { background: #dff6ed; color: #009661; }

    .service-card h3 {
      font-size: 19px;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 12px;
    }

    .service-card p {
      font-size: 14px;
      color: var(--muted);
      line-height: 1.65;
      flex-grow: 1;
      margin-bottom: 16px;
    }

    .service-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
    }

    .service-tags span {
      font-size: 12px;
      background: #f1f5f9;
      color: #475569;
      padding: 3px 8px;
      border-radius: 4px;
    }

    /* 一站式制作场景精选 */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
      gap: 20px;
    }

    .scene-card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 22px;
      transition: var(--transition);
    }

    .scene-card:hover {
      border-color: var(--secondary);
      background: #fdfefe;
      box-shadow: 0 10px 20px rgba(0, 71, 255, 0.06);
    }

    .scene-card-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 10px;
    }

    .scene-card h3 {
      font-size: 16px;
      font-weight: 700;
      color: var(--dark);
    }

    .scene-badge {
      font-size: 11px;
      padding: 2px 6px;
      border-radius: 4px;
      background: #fff2ed;
      color: var(--primary);
      font-weight: 700;
    }

    .scene-card p {
      font-size: 13px;
      color: var(--muted);
      line-height: 1.55;
    }

    /* 支持模型生态条 */
    .models-marquee-wrap {
      background: #ffffff;
      border: 2px solid #eef2f6;
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .models-pills-list {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-chip {
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      padding: 8px 16px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 700;
      color: #334155;
      transition: var(--transition);
    }

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

    /* 标准制作流程 */
    .workflow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .step-card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }

    .step-number {
      font-size: 28px;
      font-weight: 900;
      color: #e2e8f0;
      margin-bottom: 12px;
      display: block;
    }

    .step-card h3 {
      font-size: 17px;
      font-weight: 800;
      margin-bottom: 10px;
      color: var(--dark);
    }

    .step-card p {
      font-size: 13px;
      color: var(--muted);
      line-height: 1.6;
    }

    /* 案例展示区带图 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }

    .case-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

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

    .case-media-box {
      width: 100%;
      aspect-ratio: 16/9;
      background: #edf2f7;
      overflow: hidden;
    }

    .case-media-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .case-card:hover .case-media-box img {
      transform: scale(1.04);
    }

    .case-content {
      padding: 22px;
    }

    .case-content h3 {
      font-size: 17px;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 8px;
    }

    .case-content p {
      font-size: 13px;
      color: var(--muted);
      line-height: 1.55;
      margin-bottom: 14px;
    }

    .case-footer-data {
      display: flex;
      justify-content: space-between;
      border-top: 1px dashed var(--border);
      padding-top: 10px;
      font-size: 12px;
      color: #64748b;
      font-weight: 600;
    }

    /* 综合对比评测 - 突出 9.9 分与推荐度 */
    .review-score-banner {
      background: linear-gradient(135deg, #0f172a, #1e293b);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 32px 40px;
      margin-bottom: 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
    }

    .score-left h3 {
      font-size: 24px;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .score-left p {
      color: #94a3b8;
      font-size: 14px;
    }

    .score-right {
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .score-badge-circle {
      text-align: center;
    }

    .score-big {
      font-size: 48px;
      font-weight: 900;
      color: #ff5722;
      line-height: 1;
    }

    .score-total {
      font-size: 14px;
      color: #94a3b8;
      font-weight: 600;
    }

    .stars-box {
      font-size: 20px;
      color: #f59e0b;
      letter-spacing: 2px;
      font-weight: bold;
    }

    .compare-table-wrap {
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border);
    }

    .compare-table th {
      background: #f8fafc;
      color: var(--dark);
      font-weight: 800;
    }

    .compare-table td.brand-col {
      background: #fffaf8;
      font-weight: 700;
      color: var(--primary);
    }

    .compare-table tr:hover td {
      background-color: #fcfcfd;
    }

    /* 需求匹配与联系我们表单 */
    .form-section-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 36px;
      align-items: start;
    }

    .form-card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-md);
    }

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

    .form-group label {
      display: block;
      font-size: 14px;
      font-weight: 700;
      color: var(--dark);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      font-size: 14px;
      background: #f8fafc;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(255, 77, 0, 0.12);
    }

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

    .contact-info-panel {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius-lg);
      padding: 32px;
    }

    .contact-info-panel h3 {
      font-size: 20px;
      font-weight: 800;
      color: var(--dark);
      margin-bottom: 20px;
    }

    .contact-list {
      list-style: none;
      margin-bottom: 24px;
    }

    .contact-list li {
      margin-bottom: 14px;
      font-size: 14px;
      display: flex;
      align-items: center;
      gap: 12px;
      color: var(--text);
    }

    .qr-container {
      display: flex;
      align-items: center;
      gap: 20px;
      padding: 18px;
      background: #f8fafc;
      border-radius: var(--radius-md);
      border: 1px solid #eef2f6;
    }

    .qr-box {
      width: 100px;
      height: 100px;
      background: #fff;
      padding: 4px;
      border: 1px solid #cbd5e1;
      border-radius: 6px;
      flex-shrink: 0;
    }

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

    /* 用户评论 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 22px;
    }

    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .testimonial-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 12px;
    }

    .user-profile h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--dark);
    }

    .user-profile span {
      font-size: 12px;
      color: var(--muted);
    }

    .testimonial-stars {
      color: #f59e0b;
      font-size: 13px;
    }

    .testimonial-text {
      font-size: 14px;
      color: #475569;
      line-height: 1.6;
    }

    /* FAQ 折叠面板 */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }

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

    .faq-question {
      padding: 18px 22px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 700;
      color: var(--dark);
      font-size: 16px;
      user-select: none;
    }

    .faq-icon {
      font-size: 18px;
      transition: transform 0.2s ease;
      color: var(--primary);
      font-weight: bold;
    }

    .faq-answer {
      display: none;
      padding: 0 22px 18px;
      font-size: 14px;
      color: var(--muted);
      line-height: 1.65;
      border-top: 1px solid #f1f5f9;
    }

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

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

    /* 文章资讯与外链 */
    .article-section-card {
      background: #ffffff;
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 28px;
      margin-bottom: 24px;
    }

    .article-links-box {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 14px;
    }

    .article-link-tag {
      background: #f1f5f9;
      padding: 8px 14px;
      border-radius: 6px;
      font-size: 13px;
      color: #2563eb;
      font-weight: 600;
      display: inline-block;
    }

    .article-link-tag:hover {
      background: #e0e7ff;
    }

    /* 宣传图画廊展示 */
    .banner-gallery-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }

    .banner-gallery-item {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border);
    }

    .banner-gallery-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    /* 友情链接与底部页脚 */
    .footer-section {
      background: #111827;
      color: #9ca3af;
      padding: 56px 0 24px;
      border-top: 4px solid var(--primary);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 32px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #f9fafb;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 18px;
      position: relative;
    }

    .footer-links-list {
      list-style: none;
    }

    .footer-links-list li {
      margin-bottom: 10px;
      font-size: 13px;
    }

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

    .footer-friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .footer-friend-links a {
      color: #cbd5e1;
      background: #1f2937;
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 12px;
    }

    .footer-friend-links a:hover {
      background: var(--primary);
      color: #fff;
    }

    .footer-bottom {
      border-top: 1px solid #1f2937;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 13px;
      color: #6b7280;
    }

    /* 浮动交互组件 */
    .float-service {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--dark);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 16px rgba(0,0,0,0.15);
      border: 1px solid var(--border);
      cursor: pointer;
      font-weight: bold;
      transition: var(--transition);
    }

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

    .float-btn.btn-top {
      display: none;
    }

    /* 响应式样式适配 */
    @media (max-width: 992px) {
      .hero-grid {
        grid-template-columns: 1fr;
      }
      .cards-grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .workflow-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .form-section-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 20px;
        border-bottom: 2px solid var(--border);
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
      }
      .mobile-menu-btn {
        display: block;
      }
      .cards-grid-3 {
        grid-template-columns: 1fr;
      }
      .workflow-steps {
        grid-template-columns: 1fr;
      }
      .banner-gallery-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 30px;
      }
      .score-right {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }