:root {
      --primary: #4f46e5;
      --primary-light: #6366f1;
      --secondary: #06b6d4;
      --accent: #f43f5e;
      --amber: #f59e0b;
      --emerald: #10b981;
      --purple: #8b5cf6;
      --text-main: #1e293b;
      --text-muted: #64748b;
      --text-light: #94a3b8;
      --bg-page: #f8fafc;
      --bg-card: #ffffff;
      --border-color: #e2e8f0;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
      --shadow-md: 0 10px 25px -5px rgba(0,0,0,0.06), 0 8px 10px -6px rgba(0,0,0,0.03);
      --shadow-lg: 0 20px 35px -8px rgba(79, 70, 229, 0.12), 0 10px 15px -4px rgba(6, 182, 212, 0.08);
      --container-max: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      color: var(--text-main);
      line-height: 1.6;
    }

    body {
      background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.05) 0%, transparent 40%),
                  radial-gradient(circle at 90% 10%, rgba(6, 182, 212, 0.05) 0%, transparent 40%),
                  radial-gradient(circle at 50% 80%, rgba(244, 63, 94, 0.03) 0%, transparent 50%),
                  #f8fafc;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

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

    /* 顶部导航 */
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: all 0.3s ease;
    }

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

    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

    .brand-logo-box {
      max-width: 150px;
      height: 44px;
      display: flex;
      align-items: center;
    }

    .brand-name-tag {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .brand-badge {
      font-size: 0.72rem;
      padding: 2px 8px;
      background: linear-gradient(135deg, #4f46e5, #06b6d4);
      color: #ffffff;
      border-radius: 20px;
      font-weight: 600;
    }

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

    .nav-links li a {
      text-decoration: none;
      color: var(--text-main);
      font-weight: 500;
      font-size: 0.94rem;
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
      display: inline-block;
    }

    .nav-links li a:hover {
      color: var(--primary);
      background-color: rgba(79, 70, 229, 0.06);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.94rem;
      font-weight: 600;
      border-radius: 30px;
      text-decoration: none;
      transition: all 0.25s ease;
      cursor: pointer;
      border: 1px solid transparent;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(79, 70, 229, 0.45);
      color: #ffffff;
    }

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

    .btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(79, 70, 229, 0.04);
    }

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

    /* 斑斓彩调首屏 Hero (严禁出现图片) */
    .hero-section {
      padding: 80px 0 60px;
      position: relative;
      overflow: hidden;
      text-align: center;
    }

    .hero-decor-orb-1 {
      position: absolute;
      top: -100px;
      left: 10%;
      width: 320px;
      height: 320px;
      background: radial-gradient(circle, rgba(99, 102, 241, 0.25) 0%, rgba(99, 102, 241, 0) 70%);
      filter: blur(50px);
      z-index: -1;
      pointer-events: none;
    }

    .hero-decor-orb-2 {
      position: absolute;
      top: 50px;
      right: 8%;
      width: 360px;
      height: 360px;
      background: radial-gradient(circle, rgba(6, 182, 212, 0.25) 0%, rgba(244, 63, 94, 0.15) 60%, transparent 80%);
      filter: blur(60px);
      z-index: -1;
      pointer-events: none;
    }

    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #ffffff;
      border: 1px solid rgba(99, 102, 241, 0.25);
      padding: 6px 18px;
      border-radius: 50px;
      font-size: 0.85rem;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: 0 2px 10px rgba(99, 102, 241, 0.08);
    }

    .hero-pill .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10b981;
      display: inline-block;
      animation: pulseDot 2s infinite ease-in-out;
    }

    @keyframes pulseDot {
      0%, 100% { transform: scale(1); opacity: 1; }
      50% { transform: scale(1.4); opacity: 0.5; }
    }

    h1.hero-title {
      font-size: clamp(2rem, 4.5vw, 3.4rem);
      font-weight: 800;
      line-height: 1.25;
      color: #0f172a;
      letter-spacing: -1px;
      margin-bottom: 22px;
      max-width: 900px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-highlight {
      background: linear-gradient(120deg, #4f46e5 0%, #06b6d4 50%, #f43f5e 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

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

    .hero-btn-official {
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      border-radius: 35px;
      background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
      color: #ffffff;
      text-decoration: none;
      box-shadow: 0 10px 25px rgba(79, 70, 229, 0.35);
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .hero-btn-official:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 15px 30px rgba(6, 182, 212, 0.45);
      color: #ffffff;
    }

    .hero-features-chips {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 10px;
      max-width: 960px;
      margin: 0 auto;
    }

    .chip-item {
      background: rgba(255, 255, 255, 0.85);
      border: 1px solid var(--border-color);
      border-radius: 24px;
      padding: 7px 16px;
      font-size: 0.86rem;
      color: var(--text-main);
      font-weight: 500;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
      transition: all 0.2s ease;
    }

    .chip-item:hover {
      border-color: var(--primary);
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }

    /* 指标统计卡片组 */
    .stats-section {
      padding: 30px 0 60px;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .stat-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      position: relative;
      overflow: hidden;
    }

    .stat-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, #4f46e5, #06b6d4, #f43f5e);
      opacity: 0;
      transition: opacity 0.3s ease;
    }

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

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

    .stat-number {
      font-size: 2.2rem;
      font-weight: 800;
      color: #0f172a;
      line-height: 1.1;
      margin-bottom: 8px;
    }

    .stat-number span {
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--primary);
      margin-left: 2px;
    }

    .stat-title {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .stat-sub {
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    /* 通用章节容器 */
    .section-wrap {
      padding: 65px 0;
      border-top: 1px solid rgba(226, 232, 240, 0.6);
    }

    .section-header {
      text-align: center;
      max-width: 740px;
      margin: 0 auto 48px;
    }

    .section-badge {
      display: inline-block;
      font-size: 0.82rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 12px;
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
    }

    .section-title {
      font-size: clamp(1.7rem, 3vw, 2.3rem);
      font-weight: 800;
      color: #0f172a;
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .section-lead {
      font-size: 1.02rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 平台介绍 & 多模型矩阵 */
    .models-cluster {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }

    .models-tags-container {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 28px;
    }

    .model-tag {
      background: #f1f5f9;
      border: 1px solid #e2e8f0;
      color: #334155;
      font-size: 0.88rem;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 8px;
      transition: all 0.2s ease;
    }

    .model-tag.highlight {
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(6, 182, 212, 0.1));
      color: var(--primary);
      border-color: rgba(79, 70, 229, 0.3);
    }

    .model-tag:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.05);
    }

    .platform-intro-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 30px;
    }

    .intro-item {
      background: #f8fafc;
      border: 1px solid #edf2f7;
      border-radius: var(--radius-md);
      padding: 22px;
      transition: all 0.3s ease;
    }

    .intro-item:hover {
      background: #ffffff;
      border-color: var(--primary-light);
      box-shadow: var(--shadow-md);
    }

    .intro-item-title {
      font-size: 1.08rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .intro-item-title::before {
      content: "";
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: linear-gradient(135deg, #4f46e5, #06b6d4);
      display: inline-block;
    }

    .intro-item-text {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

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

    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: rgba(79, 70, 229, 0.4);
    }

    .service-top {
      margin-bottom: 18px;
    }

    .service-tag {
      font-size: 0.76rem;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 12px;
      display: inline-block;
      margin-bottom: 12px;
    }

    .service-tag.indigo { background: #e0e7ff; color: #4338ca; }
    .service-tag.cyan { background: #cffafe; color: #0e7490; }
    .service-tag.rose { background: #ffe4e6; color: #be123c; }
    .service-tag.amber { background: #fef3c7; color: #b45309; }
    .service-tag.emerald { background: #d1fae5; color: #047857; }
    .service-tag.purple { background: #f3e8ff; color: #6b21a8; }

    .service-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 10px;
    }

    .service-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 18px;
    }

    .service-features {
      list-style: none;
      padding: 0;
      margin-bottom: 20px;
    }

    .service-features li {
      font-size: 0.86rem;
      color: var(--text-main);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .service-features li::before {
      content: "✓";
      color: #10b981;
      font-weight: bold;
    }

    /* 真实素材展示区 */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      align-items: stretch;
    }

    .showcase-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;
    }

    .showcase-img-box {
      width: 100%;
      background: #f1f5f9;
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }

    .showcase-img-box img {
      width: 100%;
      max-width: 100%;
      height: 220px;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

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

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

    .showcase-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 6px;
    }

    .showcase-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 对比评测版块 */
    .compare-section {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

    .review-summary-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      padding: 24px 30px;
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.08), rgba(6, 182, 212, 0.08));
      border-radius: var(--radius-md);
      border: 1px solid rgba(79, 70, 229, 0.15);
      margin-bottom: 32px;
    }

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

    .big-score {
      font-size: 3rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .big-score span {
      font-size: 1.2rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    .stars-block {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .stars-text {
      color: #f59e0b;
      font-size: 1.4rem;
      letter-spacing: 2px;
    }

    .recommend-text {
      font-size: 0.95rem;
      font-weight: 700;
      color: #0f172a;
    }

    .table-responsive {
      width: 100%;
      overflow-x: auto;
      margin-top: 10px;
    }

    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }

    .custom-table th,
    .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.92rem;
    }

    .custom-table th {
      background: #f8fafc;
      font-weight: 700;
      color: #0f172a;
    }

    .custom-table tr:hover {
      background: #f8fafc;
    }

    .highlight-col {
      background: rgba(79, 70, 229, 0.03);
      font-weight: 600;
      color: var(--primary);
    }

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

    .process-step {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px 20px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .step-badge {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #4f46e5, #06b6d4);
      color: #ffffff;
      font-weight: 800;
      font-size: 1.15rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
    }

    .step-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 8px;
    }

    .step-desc {
      font-size: 0.86rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 客户评价板块 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .testimonial-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-quote {
      font-size: 0.94rem;
      color: #334155;
      line-height: 1.6;
      margin-bottom: 20px;
      position: relative;
    }

    .user-info-row {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 16px;
    }

    .user-avatar-tag {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, #e0e7ff, #cffafe);
      color: var(--primary);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
    }

    .user-meta-name {
      font-size: 0.95rem;
      font-weight: 700;
      color: #0f172a;
    }

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

    /* FAQ 折叠面板 */
    .faq-accordion {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 22px;
      background: none;
      border: none;
      font-size: 1.02rem;
      font-weight: 700;
      color: #0f172a;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      transition: color 0.2s ease;
    }

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

    .faq-icon {
      font-size: 1.2rem;
      font-weight: 400;
      color: var(--text-muted);
      transition: transform 0.3s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #f8fafc;
      padding: 0 22px;
    }

    .faq-answer-inner {
      padding: 16px 0 20px;
      font-size: 0.93rem;
      color: var(--text-muted);
      line-height: 1.65;
      border-top: 1px solid #edf2f7;
    }

    /* 表单与联系区 */
    .contact-container {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 36px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .contact-info-side {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-list {
      list-style: none;
      margin: 24px 0;
    }

    .contact-list li {
      margin-bottom: 16px;
      font-size: 0.95rem;
      color: #334155;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .contact-label {
      font-weight: 700;
      color: #0f172a;
      min-width: 80px;
    }

    .qrcode-box {
      background: #f8fafc;
      border: 1px solid var(--border-color);
      padding: 16px;
      border-radius: var(--radius-md);
      display: inline-flex;
      flex-direction: column;
      align-items: center;
      max-width: 170px;
    }

    .qrcode-box img {
      width: 130px;
      height: 130px;
      object-fit: contain;
      border-radius: 6px;
      margin-bottom: 8px;
    }

    .qrcode-box span {
      font-size: 0.8rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* 表单控件 */
    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: #0f172a;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      background: #f8fafc;
      color: var(--text-main);
      transition: all 0.2s ease;
      font-family: inherit;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
    }

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

    /* 行业资讯 & 资源外链 */
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-bottom: 30px;
    }

    .article-item {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px;
      transition: all 0.25s ease;
      text-decoration: none;
      color: inherit;
      display: block;
    }

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

    .article-item h4 {
      font-size: 1rem;
      color: #0f172a;
      margin-bottom: 8px;
      font-weight: 700;
    }

    .article-item p {
      font-size: 0.84rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 页脚 */
    footer.site-footer {
      background: #0f172a;
      color: #94a3b8;
      border-top: 1px solid #1e293b;
      padding: 50px 0 25px;
      margin-top: auto;
    }

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

    .footer-col h5 {
      color: #ffffff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 16px;
    }

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

    .footer-links a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 0.88rem;
      transition: color 0.2s ease;
    }

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

    .friend-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      padding: 20px 0;
      border-top: 1px solid #1e293b;
      border-bottom: 1px solid #1e293b;
      margin-bottom: 25px;
    }

    .friend-links-wrap span {
      color: #cbd5e1;
      font-size: 0.88rem;
      font-weight: 600;
    }

    .friend-links-wrap a {
      color: #94a3b8;
      text-decoration: none;
      font-size: 0.88rem;
      transition: color 0.2s ease;
    }

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

    .footer-bottom {
      text-align: center;
      font-size: 0.84rem;
      color: #64748b;
    }

    /* 浮动客服入口 */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border-color);
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(0,0,0,0.1);
      cursor: pointer;
      text-decoration: none;
      color: var(--primary);
      font-weight: 700;
      font-size: 0.9rem;
      transition: all 0.2s ease;
    }

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

    /* 响应式调整 */
    @media (max-width: 1024px) {
      .stats-grid,
      .platform-intro-grid,
      .service-grid,
      .showcase-grid,
      .process-timeline,
      .testimonial-grid,
      .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }
      .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .mobile-menu-btn {
        display: block;
      }
      .stats-grid,
      .platform-intro-grid,
      .service-grid,
      .showcase-grid,
      .process-timeline,
      .testimonial-grid,
      .articles-grid,
      .contact-container {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .review-summary-banner {
        flex-direction: column;
        align-items: flex-start;
      }
    }