:root {
      --primary-yellow: #FFD000;
      --primary-yellow-light: #FFF4B8;
      --primary-yellow-dark: #E6B800;
      --accent-black: #111827;
      --accent-dark: #1F2937;
      --text-main: #1F2937;
      --text-muted: #4B5563;
      --bg-page: #FAF9F5;
      --bg-card: #FFFFFF;
      --bg-subtle: #FFFBE6;
      --border-color: #E5E7EB;
      --border-yellow: #FCD34D;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 18px;
      --shadow-sm: 0 2px 6px rgba(17, 24, 39, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(17, 24, 39, 0.08);
      --shadow-yellow: 0 12px 30px rgba(255, 208, 0, 0.35);
      --max-width: 1240px;
      --transition-fast: 0.25s ease;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
    }

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

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

    .container {
      width: 100%;
      max-width: var(--max-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 2px solid var(--primary-yellow);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
    }

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

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

    .brand-logo-wrap {
      max-width: 140px;
      display: flex;
      align-items: center;
    }

    .brand-badge {
      background: var(--primary-yellow);
      color: var(--accent-black);
      font-size: 12px;
      font-weight: 700;
      padding: 3px 8px;
      border-radius: var(--radius-sm);
      letter-spacing: 0.5px;
    }

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

    .nav-links li a {
      display: block;
      padding: 8px 12px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-main);
      border-radius: var(--radius-sm);
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--accent-black);
      background-color: var(--primary-yellow-light);
    }

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

    .btn-main {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
      padding: 10px 22px;
      border-radius: 30px;
      background-color: var(--primary-yellow);
      color: var(--accent-black);
      border: 2px solid var(--accent-black);
      cursor: pointer;
      box-shadow: 3px 3px 0 var(--accent-black);
      transition: all var(--transition-fast);
      white-space: nowrap;
    }

    .btn-main:hover {
      transform: translate(-2px, -2px);
      box-shadow: 5px 5px 0 var(--accent-black);
      background-color: #ffe033;
    }

    .btn-main:active {
      transform: translate(1px, 1px);
      box-shadow: 2px 2px 0 var(--accent-black);
    }

    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      font-size: 14px;
      padding: 10px 20px;
      border-radius: 30px;
      background-color: #FFFFFF;
      color: var(--accent-black);
      border: 1px solid var(--border-color);
      cursor: pointer;
      transition: all var(--transition-fast);
    }

    .btn-secondary:hover {
      border-color: var(--accent-black);
      background-color: #F9FAFB;
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    .mobile-menu-toggle span {
      display: block;
      width: 24px;
      height: 3px;
      background-color: var(--accent-black);
      margin: 4px 0;
      transition: 0.3s;
    }

    /* 首屏 Hero（严禁出现图片） */
    .hero-section {
      background: radial-gradient(circle at 10% 20%, #FFFDEB 0%, #FAF9F5 80%);
      border-bottom: 1px solid var(--border-color);
      padding: 70px 0 60px;
      position: relative;
    }

    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-badge-row {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background-color: var(--primary-yellow-light);
      border: 1px solid var(--primary-yellow);
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 700;
      color: var(--accent-black);
      margin-bottom: 20px;
    }

    .hero-title {
      font-size: 40px;
      font-weight: 900;
      color: var(--accent-black);
      line-height: 1.25;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }

    .hero-highlight {
      background: linear-gradient(120deg, transparent 0%, var(--primary-yellow) 0%);
      padding: 0 6px;
      border-radius: 4px;
    }

    .hero-desc {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 30px;
      max-width: 780px;
      margin-left: auto;
      margin-right: auto;
    }

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

    .hero-portal-btn {
      font-size: 16px;
      padding: 14px 34px;
      background-color: var(--primary-yellow);
      color: var(--accent-black);
      border: 2px solid var(--accent-black);
      border-radius: 30px;
      font-weight: 800;
      box-shadow: 4px 4px 0 var(--accent-black);
      transition: all var(--transition-fast);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .hero-portal-btn:hover {
      transform: translate(-3px, -3px);
      box-shadow: 7px 7px 0 var(--accent-black);
      background-color: #FFE14D;
    }

    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      text-align: left;
    }

    .hero-stat-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-top: 4px solid var(--primary-yellow);
      border-radius: var(--radius-md);
      padding: 20px;
      box-shadow: var(--shadow-sm);
    }

    .hero-stat-title {
      font-size: 13px;
      color: var(--text-muted);
      font-weight: 600;
      margin-bottom: 6px;
    }

    .hero-stat-value {
      font-size: 26px;
      font-weight: 900;
      color: var(--accent-black);
      line-height: 1.2;
    }

    .hero-stat-desc {
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 4px;
    }

    /* Section通用排版 */
    .section-spacing {
      padding: 70px 0;
      border-bottom: 1px solid var(--border-color);
    }

    .section-header {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-eyebrow {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      color: var(--accent-black);
      background-color: var(--primary-yellow);
      padding: 4px 12px;
      border-radius: 4px;
      margin-bottom: 12px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--accent-black);
      margin-bottom: 12px;
      line-height: 1.3;
    }

    .section-subtitle {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 680px;
      margin: 0 auto;
    }

    /* 模型矩阵徽章云 */
    .model-tags-wrapper {
      background-color: var(--bg-card);
      border: 2px solid var(--accent-black);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: 4px 4px 0 var(--accent-black);
      margin-top: 30px;
    }

    .model-tags-title {
      font-size: 15px;
      font-weight: 800;
      color: var(--accent-black);
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .model-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .model-badge {
      background: #F3F4F6;
      border: 1px solid #E5E7EB;
      color: var(--accent-black);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 20px;
      transition: all var(--transition-fast);
    }

    .model-badge:hover {
      background-color: var(--primary-yellow);
      border-color: var(--accent-black);
      transform: translateY(-2px);
    }

    /* 平台介绍 & 宣传图 */
    .about-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 36px;
      align-items: center;
    }

    .about-info-panel {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .about-info-panel h3 {
      font-size: 22px;
      font-weight: 800;
      color: var(--accent-black);
      margin-bottom: 14px;
    }

    .about-text {
      color: var(--text-muted);
      font-size: 15px;
      margin-bottom: 16px;
      text-align: justify;
    }

    .about-features-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 20px;
    }

    .about-feature-item {
      display: flex;
      align-items: flex-start;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--accent-black);
    }

    .about-feature-item::before {
      content: "✓";
      color: var(--accent-black);
      background: var(--primary-yellow);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      font-size: 11px;
      flex-shrink: 0;
      margin-top: 2px;
    }

    .about-media-stack {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .media-card {
      background: #FFFFFF;
      padding: 10px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }

    .media-card img {
      border-radius: var(--radius-sm);
      width: 100%;
      object-fit: cover;
    }

    /* 服务场景网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      transition: all var(--transition-fast);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .service-card:hover {
      transform: translateY(-5px);
      border-color: var(--primary-yellow-dark);
      box-shadow: var(--shadow-md);
    }

    .service-header {
      margin-bottom: 12px;
    }

    .service-tag {
      font-size: 11px;
      font-weight: 700;
      background-color: var(--bg-subtle);
      color: #854D0E;
      border: 1px solid var(--border-yellow);
      padding: 2px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 8px;
    }

    .service-title {
      font-size: 18px;
      font-weight: 800;
      color: var(--accent-black);
    }

    .service-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 16px;
    }

    .service-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-top: 1px dashed var(--border-color);
      padding-top: 12px;
      font-size: 13px;
      color: var(--accent-black);
      font-weight: 700;
    }

    /* 对比评测高亮专区 */
    .eval-section {
      background: linear-gradient(180deg, #FAF9F5 0%, #FFFDE8 100%);
    }

    .eval-header-card {
      background-color: var(--accent-black);
      color: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 30px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 30px;
      border: 3px solid var(--primary-yellow);
      flex-wrap: wrap;
      gap: 20px;
    }

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

    .eval-score-num {
      font-size: 48px;
      font-weight: 900;
      color: var(--primary-yellow);
      line-height: 1;
    }

    .eval-score-text p:first-child {
      font-size: 16px;
      font-weight: 700;
    }

    .eval-score-text p:last-child {
      font-size: 13px;
      color: #9CA3AF;
    }

    .eval-star {
      color: var(--primary-yellow);
      font-size: 20px;
      letter-spacing: 2px;
    }

    .table-responsive {
      overflow-x: auto;
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 650px;
    }

    .eval-table th,
    .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
    }

    .eval-table th {
      background-color: #F9FAFB;
      color: var(--accent-black);
      font-weight: 800;
    }

    .eval-table tr:hover {
      background-color: #FFFDF0;
    }

    .eval-highlight-cell {
      background-color: #FFFCE0;
      font-weight: 700;
      color: var(--accent-black);
    }

    .badge-win {
      background-color: var(--primary-yellow);
      color: var(--accent-black);
      padding: 3px 8px;
      border-radius: 4px;
      font-size: 12px;
      font-weight: 800;
      margin-right: 6px;
    }

    /* 标准交付流程 */
    .flow-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .flow-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .flow-step-idx {
      width: 36px;
      height: 36px;
      background-color: var(--primary-yellow);
      color: var(--accent-black);
      border: 2px solid var(--accent-black);
      border-radius: 50%;
      font-weight: 900;
      font-size: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 14px;
    }

    .flow-step-title {
      font-size: 17px;
      font-weight: 800;
      color: var(--accent-black);
      margin-bottom: 8px;
    }

    .flow-step-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 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-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background-color: #F3F4F6;
      overflow: hidden;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s;
    }

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

    .case-info {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .case-title {
      font-size: 17px;
      font-weight: 800;
      color: var(--accent-black);
      margin-bottom: 8px;
    }

    .case-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 14px;
    }

    .case-metrics {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 12px;
      background-color: var(--bg-subtle);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      font-weight: 700;
      color: #854D0E;
    }

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

    .review-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-left: 4px solid var(--primary-yellow);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-quote {
      font-size: 14px;
      color: var(--text-main);
      line-height: 1.7;
      margin-bottom: 18px;
      font-style: italic;
    }

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

    .review-avatar-char {
      width: 42px;
      height: 42px;
      background-color: var(--primary-yellow);
      color: var(--accent-black);
      border-radius: 50%;
      font-weight: 800;
      font-size: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--accent-black);
    }

    .review-author-name {
      font-size: 14px;
      font-weight: 800;
      color: var(--accent-black);
    }

    .review-author-role {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* FAQ折叠栏 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

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

    .faq-item.open {
      border-color: var(--primary-yellow-dark);
    }

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

    .faq-question:hover {
      background-color: var(--bg-subtle);
    }

    .faq-icon {
      font-size: 18px;
      font-weight: 800;
      transition: transform 0.25s;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out, padding 0.3s ease;
      background-color: #FAFAFA;
      padding: 0 22px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    .faq-item.open .faq-answer {
      max-height: 250px;
      padding: 16px 22px 20px;
      border-top: 1px solid var(--border-color);
    }

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

    .form-card {
      background: #FFFFFF;
      border: 2px solid var(--accent-black);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: 6px 6px 0 var(--accent-black);
    }

    .form-card h3 {
      font-size: 22px;
      font-weight: 800;
      color: var(--accent-black);
      margin-bottom: 8px;
    }

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

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

    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 700;
      color: var(--accent-black);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      font-size: 14px;
      border: 1px solid #D1D5DB;
      border-radius: var(--radius-sm);
      background-color: #FFFFFF;
      color: var(--text-main);
      outline: none;
      transition: border-color var(--transition-fast);
    }

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

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

    .form-submit-btn {
      width: 100%;
      padding: 14px;
      font-size: 16px;
      font-weight: 800;
      background-color: var(--primary-yellow);
      color: var(--accent-black);
      border: 2px solid var(--accent-black);
      border-radius: 30px;
      cursor: pointer;
      box-shadow: 3px 3px 0 var(--accent-black);
      transition: all var(--transition-fast);
    }

    .form-submit-btn:hover {
      transform: translate(-2px, -2px);
      box-shadow: 5px 5px 0 var(--accent-black);
      background-color: #FFE033;
    }

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

    .contact-info-panel h3 {
      font-size: 20px;
      font-weight: 800;
      color: var(--accent-black);
      margin-bottom: 16px;
    }

    .contact-meta-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 24px;
    }

    .contact-meta-item {
      display: flex;
      flex-direction: column;
      font-size: 14px;
    }

    .contact-meta-label {
      font-weight: 700;
      color: var(--accent-black);
      font-size: 12px;
      text-transform: uppercase;
      margin-bottom: 2px;
    }

    .contact-meta-value {
      color: var(--text-muted);
      word-break: break-all;
    }

    .qrcode-box {
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 16px;
      background-color: #FAFAFA;
      text-align: center;
      max-width: 220px;
    }

    .qrcode-box img {
      border-radius: var(--radius-sm);
      margin: 0 auto 10px;
      max-width: 160px;
    }

    .qrcode-box p {
      font-size: 12px;
      font-weight: 700;
      color: var(--accent-black);
    }

    /* 最新文章与资讯列表 */
    .news-wrapper {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }

    .news-title {
      font-size: 18px;
      font-weight: 800;
      color: var(--accent-black);
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .news-list {
      list-style: none;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }

    .news-item {
      border: 1px solid #F3F4F6;
      background: #FAFAFA;
      border-radius: var(--radius-sm);
      padding: 12px 16px;
      transition: all var(--transition-fast);
    }

    .news-item:hover {
      border-color: var(--primary-yellow);
      background: #FFFFFF;
      transform: translateX(4px);
    }

    .news-item a {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      display: block;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .news-item a:hover {
      color: #B45309;
    }

    /* 友情链接 */
    .links-section {
      background-color: #F9FAFB;
      padding: 30px 0;
      border-top: 1px solid var(--border-color);
    }

    .links-title {
      font-size: 14px;
      font-weight: 800;
      color: var(--accent-black);
      margin-bottom: 12px;
    }

    .links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }

    .links-list a {
      font-size: 13px;
      color: var(--text-muted);
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 4px 12px;
      border-radius: 4px;
      transition: all var(--transition-fast);
    }

    .links-list a:hover {
      border-color: var(--accent-black);
      background-color: var(--primary-yellow);
      color: var(--accent-black);
    }

    /* Footer 规范 */
    .site-footer {
      background-color: #111827;
      color: #D1D5DB;
      padding: 45px 0 25px;
      border-top: 4px solid var(--primary-yellow);
    }

    .footer-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid #374151;
      padding-bottom: 24px;
      margin-bottom: 24px;
      flex-wrap: wrap;
      gap: 16px;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      color: #FFFFFF;
      font-size: 18px;
      font-weight: 800;
    }

    .footer-home-link a {
      color: var(--primary-yellow);
      font-size: 14px;
      font-weight: 600;
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 13px;
      color: #9CA3AF;
      flex-wrap: wrap;
      gap: 12px;
    }

    .footer-bottom a {
      color: #D1D5DB;
    }

    .footer-bottom a:hover {
      color: var(--primary-yellow);
    }

    /* 悬浮客服面板 */
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .kefu-btn {
      width: 52px;
      height: 52px;
      background-color: var(--primary-yellow);
      color: var(--accent-black);
      border: 2px solid var(--accent-black);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 16px rgba(0,0,0,0.15);
      cursor: pointer;
      font-weight: 900;
      font-size: 12px;
      text-align: center;
      line-height: 1.1;
      transition: all var(--transition-fast);
    }

    .kefu-btn:hover {
      transform: scale(1.08);
      background-color: #FFE033;
    }

    .back-to-top {
      width: 44px;
      height: 44px;
      background-color: #FFFFFF;
      color: var(--accent-black);
      border: 1px solid var(--border-color);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: var(--shadow-sm);
      cursor: pointer;
      font-size: 18px;
      font-weight: 900;
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
    }

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

    /* 响应式样式适配 */
    @media (max-width: 1024px) {
      .services-grid,
      .cases-grid,
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .about-grid,
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .hero-title {
        font-size: 28px;
      }
      .section-title {
        font-size: 24px;
      }
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid,
      .cases-grid,
      .reviews-grid,
      .news-list {
        grid-template-columns: 1fr;
      }
      .flow-steps-grid {
        grid-template-columns: 1fr;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        padding: 16px 20px;
        border-bottom: 2px solid var(--primary-yellow);
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        padding: 12px;
        width: 100%;
      }
      .header-actions .btn-secondary {
        display: none;
      }
      .eval-header-card {
        flex-direction: column;
        align-items: flex-start;
      }
    }