:root {
      --primary-color: #ff3366;
      --primary-hover: #e02456;
      --secondary-color: #00d2ff;
      --accent-color: #ffaa00;
      --accent-violet: #7928ca;
      --text-main: #1e2229;
      --text-muted: #5a6474;
      --text-light: #8a96a8;
      --bg-page: #fbfbfe;
      --bg-card: #ffffff;
      --bg-card-alt: #f4f6fc;
      --border-color: #e2e8f0;
      --border-focus: #ff3366;
      --shadow-sm: 0 4px 12px rgba(255, 51, 102, 0.06);
      --shadow-md: 0 10px 30px rgba(121, 40, 202, 0.08);
      --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.08);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 24px;
      --transition-base: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.65;
      font-size: 16px;
      overflow-x: hidden;
      position: relative;
    }

    /* 艳彩高饱和背景氛围层 */
    body::before {
      content: "";
      position: fixed;
      top: -150px;
      left: 50%;
      transform: translateX(-50%);
      width: 1200px;
      height: 800px;
      background: radial-gradient(circle at 50% 30%, rgba(255, 51, 102, 0.08) 0%, rgba(0, 210, 255, 0.06) 40%, rgba(121, 40, 202, 0.04) 70%, transparent 85%);
      pointer-events: none;
      z-index: 0;
    }

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

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
      position: relative;
      z-index: 1;
    }

    .section-wrap {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 780px;
      margin: 0 auto 50px;
    }

    .section-tag {
      display: inline-block;
      padding: 6px 16px;
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary-color), var(--accent-violet));
      border-radius: 30px;
      margin-bottom: 16px;
      box-shadow: 0 4px 14px rgba(255, 51, 102, 0.3);
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      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-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .brand-logo-wrap {
      height: 40px;
      display: flex;
      align-items: center;
    }

    .ai-page-logo {
      height: 38px;
      width: auto;
      object-fit: contain;
    }

    .brand-title-box {
      display: flex;
      flex-direction: column;
    }

    .brand-name {
      font-size: 19px;
      font-weight: 800;
      line-height: 1.2;
      background: linear-gradient(90deg, var(--primary-color), var(--accent-violet));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .brand-sub {
      font-size: 11px;
      font-weight: 600;
      color: var(--text-light);
      letter-spacing: 0.5px;
    }

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

    .nav-item a {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-muted);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      position: relative;
    }

    .nav-item a:hover {
      color: var(--primary-color);
      background-color: rgba(255, 51, 102, 0.06);
    }

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

    .btn-portal {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 14px;
      font-weight: 700;
      color: #fff !important;
      background: linear-gradient(135deg, var(--primary-color), #ff5e3a);
      border-radius: 30px;
      box-shadow: 0 4px 16px rgba(255, 51, 102, 0.35);
      transition: var(--transition-base);
    }

    .btn-portal:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 22px rgba(255, 51, 102, 0.45);
    }

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

    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-main);
      margin: 5px 0;
      transition: var(--transition-base);
    }

    /* 首屏 Hero 区：无图纯色渐变几何动效 */
    .hero-section {
      padding: 90px 0 80px;
      background: linear-gradient(180deg, rgba(255, 255, 255, 0.9) 0%, rgba(244, 246, 252, 0.6) 100%);
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-content {
      text-align: center;
      max-width: 920px;
      margin: 0 auto;
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 20px;
      background: #ffffff;
      border: 1px solid rgba(255, 51, 102, 0.25);
      border-radius: 40px;
      box-shadow: 0 4px 15px rgba(255, 51, 102, 0.1);
      margin-bottom: 24px;
    }

    .badge-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: var(--primary-color);
      box-shadow: 0 0 10px var(--primary-color);
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0% { transform: scale(0.9); opacity: 0.8; }
      50% { transform: scale(1.2); opacity: 1; }
      100% { transform: scale(0.9); opacity: 0.8; }
    }

    .badge-text {
      font-size: 13px;
      font-weight: 700;
      color: var(--text-main);
    }

    .badge-highlight {
      color: var(--primary-color);
      font-weight: 800;
    }

    .hero-title {
      font-size: 46px;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 24px;
      letter-spacing: -1px;
    }

    .hero-title span {
      background: linear-gradient(120deg, var(--primary-color) 0%, var(--accent-violet) 50%, var(--secondary-color) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-subtitle {
      font-size: 18px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 40px;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .btn-hero-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 16px 36px;
      font-size: 16px;
      font-weight: 800;
      color: #fff !important;
      background: linear-gradient(135deg, var(--primary-color), var(--accent-violet));
      border-radius: 40px;
      box-shadow: 0 8px 28px rgba(255, 51, 102, 0.4);
      transition: var(--transition-base);
    }

    .btn-hero-primary:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 12px 36px rgba(255, 51, 102, 0.55);
    }

    .btn-hero-outline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 16px 32px;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 40px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-base);
    }

    .btn-hero-outline:hover {
      border-color: var(--primary-color);
      color: var(--primary-color);
      transform: translateY(-2px);
    }

    /* 核心数据看板 */
    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 1040px;
      margin: 0 auto;
    }

    .metric-card {
      background: #ffffff;
      border: 1px solid rgba(226, 232, 240, 0.9);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-base);
      position: relative;
      overflow: hidden;
    }

    .metric-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
      opacity: 0;
      transition: var(--transition-base);
    }

    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(255, 51, 102, 0.3);
    }

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

    .metric-num {
      font-size: 32px;
      font-weight: 900;
      color: var(--primary-color);
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .metric-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .metric-sub {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 支持模型标签云 */
    .model-tag-strip {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px 30px;
      margin-top: 40px;
      box-shadow: var(--shadow-sm);
    }

    .tag-strip-title {
      font-size: 13px;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: var(--text-muted);
      margin-bottom: 16px;
      text-align: center;
    }

    .tags-container {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
    }

    .model-chip {
      display: inline-block;
      padding: 6px 14px;
      background: var(--bg-card-alt);
      border: 1px solid #e1e7f0;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 600;
      color: var(--text-main);
      transition: var(--transition-base);
    }

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

    /* 平台介绍板块 */
    .about-box {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 48px;
      box-shadow: var(--shadow-sm);
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .about-text h3 {
      font-size: 26px;
      font-weight: 800;
      margin-bottom: 20px;
      color: var(--text-main);
      line-height: 1.4;
    }

    .about-text p {
      font-size: 15px;
      color: var(--text-muted);
      margin-bottom: 16px;
      line-height: 1.8;
    }

    .about-feature-list {
      list-style: none;
      margin-top: 24px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }

    .about-feature-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

    .about-check-icon {
      width: 18px;
      height: 18px;
      background: rgba(0, 210, 255, 0.15);
      color: #0088cc;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 11px;
    }

    .about-media-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }

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

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      transition: var(--transition-base);
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: rgba(255, 51, 102, 0.4);
    }

    .service-icon-box {
      width: 54px;
      height: 54px;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(255, 51, 102, 0.1), rgba(121, 40, 202, 0.1));
      color: var(--primary-color);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: 900;
      margin-bottom: 20px;
    }

    .service-title {
      font-size: 19px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .service-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }

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

    .service-mini-tag {
      font-size: 11px;
      padding: 4px 10px;
      background: var(--bg-card-alt);
      color: var(--text-muted);
      border-radius: 12px;
      font-weight: 600;
    }

    /* 一站式制作全场景 */
    .production-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

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

    .prod-card:hover {
      transform: translateY(-4px);
      border-color: var(--secondary-color);
      box-shadow: 0 10px 25px rgba(0, 210, 255, 0.15);
    }

    .prod-badge {
      font-size: 11px;
      font-weight: 800;
      padding: 3px 8px;
      border-radius: 4px;
      background: #e6f9ff;
      color: #0088cc;
      display: inline-block;
      margin-bottom: 12px;
    }

    .prod-title {
      font-size: 16px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 8px;
    }

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

    /* 行业解决方案与素材图 */
    .solutions-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }

    .solution-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .solution-img-wrap {
      border-radius: var(--radius-md);
      overflow: hidden;
      aspect-ratio: 16 / 9;
      background: var(--bg-card-alt);
    }

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

    .solution-item:hover .solution-img-wrap img {
      transform: scale(1.04);
    }

    .solution-title {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-main);
    }

    .solution-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 对比评测板块 */
    .evaluation-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .rating-summary-box {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
      padding: 24px 32px;
      background: linear-gradient(135deg, rgba(255, 51, 102, 0.04), rgba(121, 40, 202, 0.05));
      border: 1px solid rgba(255, 51, 102, 0.2);
      border-radius: var(--radius-md);
      margin-bottom: 36px;
    }

    .rating-score-area {
      display: flex;
      align-items: baseline;
      gap: 10px;
    }

    .rating-big-score {
      font-size: 52px;
      font-weight: 900;
      color: var(--primary-color);
      line-height: 1;
    }

    .rating-scale {
      font-size: 18px;
      color: var(--text-muted);
      font-weight: 700;
    }

    .rating-stars {
      color: #ffaa00;
      font-size: 20px;
      margin-left: 8px;
    }

    .rating-summary-text h4 {
      font-size: 18px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .rating-summary-text p {
      font-size: 14px;
      color: var(--text-muted);
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14px;
      min-width: 720px;
    }

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

    .eval-table th {
      background: var(--bg-card-alt);
      font-weight: 800;
      color: var(--text-main);
    }

    .eval-table tr:hover td {
      background-color: rgba(255, 51, 102, 0.02);
    }

    .badge-highlight-win {
      display: inline-block;
      padding: 3px 10px;
      border-radius: 12px;
      background: rgba(255, 51, 102, 0.12);
      color: var(--primary-color);
      font-weight: 800;
    }

    .badge-gray {
      display: inline-block;
      padding: 3px 10px;
      border-radius: 12px;
      background: #eef1f6;
      color: var(--text-muted);
      font-size: 12px;
    }

    /* 流程与网络 */
    .flow-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .flow-step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      position: relative;
    }

    .step-index {
      font-size: 28px;
      font-weight: 900;
      color: rgba(0, 210, 255, 0.6);
      margin-bottom: 12px;
      line-height: 1;
    }

    .step-name {
      font-size: 17px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 10px;
    }

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

    /* 客户真实评价 6条 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition-base);
    }

    .review-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(121, 40, 202, 0.3);
    }

    .review-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
      font-style: italic;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px dashed var(--border-color);
      padding-top: 16px;
    }

    .reviewer-avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 15px;
    }

    .reviewer-info-box h5 {
      font-size: 15px;
      font-weight: 800;
      color: var(--text-main);
    }

    .reviewer-info-box span {
      font-size: 12px;
      color: var(--text-light);
    }

    /* 案例中心与Banner宣传图 */
    .case-banner-area {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-bottom: 30px;
    }

    .banner-box {
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-color);
    }

    .ai-page-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    /* FAQ 折叠面板 (不少于10条) */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition-base);
    }

    .faq-item.active {
      border-color: var(--primary-color);
      box-shadow: 0 4px 16px rgba(255, 51, 102, 0.08);
    }

    .faq-question {
      padding: 20px 24px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
    }

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

    .faq-icon {
      font-size: 20px;
      transition: transform 0.3s ease;
      color: var(--text-light);
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 24px;
      background: #fafbff;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 24px 24px;
      border-top: 1px solid #f0f3f9;
    }

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

    /* 需求匹配与联系我们表单 */
    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 40px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 48px;
      box-shadow: var(--shadow-md);
    }

    .contact-info-panel h3 {
      font-size: 26px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .contact-info-panel p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .contact-details-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 30px;
    }

    .contact-detail-row {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: var(--text-main);
    }

    .detail-tag {
      font-weight: 800;
      color: var(--primary-color);
      min-width: 80px;
    }

    .qr-card {
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      padding: 16px;
      background: var(--bg-card-alt);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
    }

    .qr-image-container {
      width: 140px;
      height: 140px;
      background: #ffffff;
      border-radius: 8px;
      overflow: hidden;
      margin-bottom: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .qr-text {
      font-size: 12px;
      font-weight: 700;
      color: var(--text-muted);
    }

    .form-panel form {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

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

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

    .form-group label {
      font-size: 13px;
      font-weight: 700;
      color: var(--text-main);
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      font-size: 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      background: var(--bg-card-alt);
      color: var(--text-main);
      outline: none;
      transition: var(--transition-base);
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--primary-color);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(255, 51, 102, 0.15);
    }

    .form-textarea {
      resize: vertical;
      min-height: 110px;
    }

    .btn-submit {
      padding: 14px 28px;
      background: linear-gradient(135deg, var(--primary-color), var(--accent-violet));
      color: #ffffff;
      font-size: 15px;
      font-weight: 800;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 6px 20px rgba(255, 51, 102, 0.35);
      transition: var(--transition-base);
    }

    .btn-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 25px rgba(255, 51, 102, 0.45);
    }

    /* 行业资讯与文章模块 */
    .article-section-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .article-links-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
      gap: 14px;
      margin-top: 20px;
    }

    .article-chip {
      display: flex;
      align-items: center;
      padding: 12px 16px;
      background: var(--bg-card-alt);
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-sm);
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      transition: var(--transition-base);
    }

    .article-chip:hover {
      background: #ffffff;
      border-color: var(--primary-color);
      color: var(--primary-color);
      transform: translateX(4px);
    }

    /* 友情链接与页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 30px;
      margin-top: 60px;
    }

    .footer-top-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-brand p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-top: 12px;
      max-width: 320px;
    }

    .footer-col h5 {
      font-size: 15px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links-list a {
      font-size: 13px;
      color: var(--text-muted);
    }

    .footer-links-list a:hover {
      color: var(--primary-color);
    }

    .friend-links-box {
      border-top: 1px solid var(--border-color);
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friend-title {
      font-size: 13px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .friend-links-row {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }

    .friend-links-row a {
      font-size: 13px;
      color: var(--text-muted);
    }

    .friend-links-row a:hover {
      color: var(--primary-color);
    }

    .footer-bottom-bar {
      border-top: 1px solid #f0f3f9;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 12px;
      color: var(--text-light);
    }

    /* 浮动客服入口 */
    .floating-service {
      position: fixed;
      right: 24px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-main);
      cursor: pointer;
      transition: var(--transition-base);
      font-size: 18px;
    }

    .float-btn:hover {
      background: var(--primary-color);
      color: #ffffff;
      border-color: var(--primary-color);
      transform: scale(1.08);
    }

    .btn-top {
      display: none;
    }

    /* 响应式样式规范 */
    @media (max-width: 1024px) {
      .hero-title {
        font-size: 38px;
      }
      .service-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .production-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-top-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-item {
        width: 100%;
        text-align: center;
      }
      .nav-item a {
        display: block;
        padding: 12px;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-subtitle {
        font-size: 15px;
      }
      .about-grid, .solutions-layout, .contact-layout, .case-banner-area {
        grid-template-columns: 1fr;
      }
      .service-grid, .production-grid, .reviews-grid, .flow-steps, .hero-metrics-grid {
        grid-template-columns: 1fr;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .footer-top-grid {
        grid-template-columns: 1fr;
      }
      .about-box, .contact-layout, .evaluation-card {
        padding: 24px;
      }
    }