:root {
      --bg-base: #f8fafc;
      --bg-surface: #ffffff;
      --bg-card: rgba(255, 255, 255, 0.85);
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-sub: #64748b;
      --brand-primary: #4f46e5;
      --brand-accent: #06b6d4;
      --brand-pink: #ec4899;
      --brand-amber: #f59e0b;
      --laser-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 35%, #ec4899 70%, #06b6d4 100%);
      --laser-glow: 0 10px 30px -10px rgba(168, 85, 247, 0.35);
      --laser-border: linear-gradient(135deg, rgba(99, 102, 241, 0.4), rgba(236, 72, 153, 0.4), rgba(6, 182, 212, 0.4));
      --card-border: rgba(226, 232, 240, 0.8);
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 8px 24px -4px rgba(15, 23, 42, 0.08);
      --shadow-hover: 0 16px 36px -6px rgba(99, 102, 241, 0.18);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --container-width: 1240px;
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 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, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
      position: relative;
    }

    body::before {
      content: "";
      position: fixed;
      top: -10vw;
      left: -10vw;
      width: 50vw;
      height: 50vw;
      background: radial-gradient(circle, rgba(168, 85, 247, 0.12) 0%, rgba(6, 182, 212, 0.08) 50%, transparent 70%);
      pointer-events: none;
      z-index: -1;
      filter: blur(80px);
    }

    body::after {
      content: "";
      position: fixed;
      bottom: -15vw;
      right: -10vw;
      width: 60vw;
      height: 60vw;
      background: radial-gradient(circle, rgba(236, 72, 153, 0.09) 0%, rgba(99, 102, 241, 0.08) 50%, transparent 70%);
      pointer-events: none;
      z-index: -1;
      filter: blur(90px);
    }

    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 24px;
    }

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

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      transition: var(--transition);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
      gap: 16px;
    }

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

    .brand-wrap .ai-page-logo {
      height: 40px;
      width: auto;
      object-fit: contain;
      display: block;
    }

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

    .nav-links li a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      display: block;
      white-space: nowrap;
    }

    .nav-links li a:hover {
      color: var(--brand-primary);
      background: rgba(99, 102, 241, 0.06);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      font-size: 15px;
      padding: 10px 22px;
      border-radius: var(--radius-full);
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-laser {
      background: var(--laser-gradient);
      color: #ffffff;
      box-shadow: 0 4px 18px rgba(168, 85, 247, 0.35);
    }

    .btn-laser:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 24px rgba(168, 85, 247, 0.5);
      color: #ffffff;
    }

    .btn-outline {
      background: #ffffff;
      color: var(--brand-primary);
      border-color: rgba(99, 102, 241, 0.4);
    }

    .btn-outline:hover {
      background: rgba(99, 102, 241, 0.04);
      border-color: var(--brand-primary);
      transform: translateY(-2px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
      color: var(--text-main);
    }

    /* 首屏纯CSS与排版打造科技镭射感，零图片配置 */
    .hero-section {
      padding: 72px 0 60px;
      position: relative;
    }

    .hero-container {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 40px;
      align-items: center;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: rgba(255, 255, 255, 0.8);
      border: 1px solid rgba(168, 85, 247, 0.3);
      border-radius: var(--radius-full);
      font-size: 13px;
      font-weight: 600;
      color: #7c3aed;
      box-shadow: 0 2px 10px rgba(168, 85, 247, 0.1);
      margin-bottom: 20px;
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10b981;
      box-shadow: 0 0 10px #10b981;
      animation: pulseDot 2s infinite;
    }

    @keyframes pulseDot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(1.2); }
    }

    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 18px;
      letter-spacing: -0.02em;
    }

    .hero-highlight {
      background: var(--laser-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-desc {
      font-size: 17px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 32px;
      max-width: 580px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      margin-bottom: 36px;
    }

    .hero-cta-main {
      font-size: 17px;
      padding: 14px 34px;
      border-radius: var(--radius-full);
      box-shadow: 0 8px 24px rgba(99, 102, 241, 0.35);
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .hero-tag {
      font-size: 12px;
      color: var(--text-sub);
      background: #ffffff;
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      border: 1px solid rgba(226, 232, 240, 0.9);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 首屏纯 CSS 幻彩虚拟视窗卡片 */
    .hero-visual-card {
      background: linear-gradient(145deg, #ffffff, #f1f5f9);
      border-radius: var(--radius-lg);
      border: 1px solid rgba(168, 85, 247, 0.35);
      padding: 30px;
      box-shadow: 0 20px 40px -12px rgba(99, 102, 241, 0.15), inset 0 0 20px rgba(236, 72, 153, 0.05);
      position: relative;
      overflow: hidden;
    }

    .hero-visual-card::before {
      content: "";
      position: absolute;
      top: -50%;
      left: -50%;
      width: 200%;
      height: 200%;
      background: conic-gradient(from 0deg, rgba(99, 102, 241, 0.08), rgba(236, 72, 153, 0.08), rgba(6, 182, 212, 0.08), rgba(99, 102, 241, 0.08));
      animation: rotateLaser 15s linear infinite;
      z-index: 0;
      pointer-events: none;
    }

    @keyframes rotateLaser {
      100% { transform: rotate(360deg); }
    }

    .visual-content {
      position: relative;
      z-index: 1;
    }

    .console-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid rgba(226, 232, 240, 0.9);
      padding-bottom: 14px;
      margin-bottom: 20px;
    }

    .console-dots {
      display: flex;
      gap: 6px;
    }

    .dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
    }
    .dot-red { background: #ef4444; }
    .dot-yellow { background: #f59e0b; }
    .dot-green { background: #10b981; }

    .console-status {
      font-size: 12px;
      font-weight: 600;
      color: #6366f1;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .radar-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-bottom: 20px;
    }

    .radar-item {
      background: #ffffff;
      padding: 16px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: var(--shadow-sm);
    }

    .radar-num {
      font-size: 24px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.2;
    }

    .radar-num span {
      font-size: 14px;
      color: #ec4899;
      margin-left: 2px;
    }

    .radar-label {
      font-size: 12px;
      color: var(--text-sub);
      margin-top: 4px;
    }

    .model-spectrum {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 16px;
      border: 1px solid rgba(226, 232, 240, 0.8);
    }

    .spectrum-title {
      font-size: 13px;
      font-weight: 700;
      color: var(--text-muted);
      margin-bottom: 10px;
      display: flex;
      justify-content: space-between;
    }

    .spectrum-bars {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .spectrum-bar-wrap {
      display: flex;
      align-items: center;
      font-size: 12px;
      color: var(--text-muted);
      gap: 10px;
    }

    .spectrum-name {
      width: 75px;
      white-space: nowrap;
    }

    .spectrum-track {
      flex: 1;
      height: 6px;
      background: #e2e8f0;
      border-radius: 4px;
      overflow: hidden;
    }

    .spectrum-fill {
      height: 100%;
      border-radius: 4px;
      background: var(--laser-gradient);
    }

    /* 模块通用样式 */
    section {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }

    .section-badge {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      color: var(--brand-primary);
      background: rgba(99, 102, 241, 0.08);
      padding: 4px 14px;
      border-radius: var(--radius-full);
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.35;
      margin-bottom: 14px;
    }

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

    /* 平台核心卡片与网格 */
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

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

    .card {
      background: var(--bg-surface);
      border-radius: var(--radius-md);
      border: 1px solid var(--card-border);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(168, 85, 247, 0.4);
    }

    .card-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(99, 102, 241, 0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--brand-primary);
      font-size: 22px;
      border: 1px solid rgba(99, 102, 241, 0.2);
    }

    .card-title {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .card-text {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }

    /* 场景与能力网格 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 20px;
    }

    .scenario-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid rgba(226, 232, 240, 0.85);
      padding: 24px;
      transition: var(--transition);
      position: relative;
    }

    .scenario-card::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--laser-gradient);
      opacity: 0;
      transition: var(--transition);
    }

    .scenario-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: rgba(99, 102, 241, 0.3);
    }

    .scenario-card:hover::after {
      opacity: 1;
    }

    .scenario-tag {
      font-size: 12px;
      font-weight: 600;
      color: #6366f1;
      margin-bottom: 8px;
      display: block;
    }

    .scenario-title {
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

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

    /* 模型阵列徽章栏 */
    .model-pills-wrap {
      background: #ffffff;
      border: 1px solid var(--card-border);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }

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

    .model-pill {
      font-size: 13px;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: var(--radius-full);
      background: #f1f5f9;
      color: var(--text-muted);
      border: 1px solid #e2e8f0;
      transition: var(--transition);
    }

    .model-pill:hover {
      background: #ffffff;
      border-color: #a855f7;
      color: #7c3aed;
      transform: scale(1.05);
      box-shadow: 0 4px 12px rgba(168, 85, 247, 0.15);
    }

    /* 对比评测板块 */
    .review-score-board {
      display: grid;
      grid-template-columns: 280px 1fr;
      gap: 30px;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(168, 85, 247, 0.3);
      padding: 36px;
      box-shadow: var(--shadow-md);
      margin-bottom: 30px;
      align-items: center;
    }

    .score-summary {
      text-align: center;
      border-right: 1px solid #e2e8f0;
      padding-right: 30px;
    }

    .stars-box {
      color: #f59e0b;
      font-size: 24px;
      letter-spacing: 4px;
      margin-bottom: 8px;
    }

    .big-score {
      font-size: 56px;
      font-weight: 900;
      color: var(--text-main);
      line-height: 1;
    }

    .big-score span {
      font-size: 20px;
      color: var(--text-sub);
      font-weight: 500;
    }

    .score-grade {
      font-size: 14px;
      font-weight: 700;
      color: #10b981;
      margin-top: 8px;
      background: rgba(16, 185, 129, 0.1);
      display: inline-block;
      padding: 3px 12px;
      border-radius: var(--radius-full);
    }

    .review-highlights {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .rh-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
    }

    .rh-check {
      color: #10b981;
      font-weight: 800;
      font-size: 16px;
      margin-top: 2px;
    }

    .rh-text h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-main);
    }

    .rh-text p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 对比表格 */
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--card-border);
      box-shadow: var(--shadow-sm);
    }

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

    .compare-table th, .compare-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
      font-size: 14px;
    }

    .compare-table th {
      background: #f8fafc;
      font-weight: 700;
      color: var(--text-main);
    }

    .compare-table th.highlight-col {
      background: rgba(99, 102, 241, 0.06);
      color: var(--brand-primary);
      font-size: 15px;
    }

    .compare-table td.highlight-col {
      background: rgba(99, 102, 241, 0.02);
      font-weight: 600;
      color: var(--brand-primary);
    }

    /* 流程步骤 */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

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

    .step-badge {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--laser-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 14px;
      margin-bottom: 16px;
    }

    /* 案例中心展示（含宣传图与真实素材容器） */
    .cases-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 28px;
      align-items: center;
    }

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

    .case-banner-box img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.5s ease;
    }

    .case-banner-box:hover img {
      transform: scale(1.02);
    }

    .case-sub-gallery {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

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

    .case-sub-item img {
      width: 100%;
      height: auto;
      display: block;
    }

    .case-sub-info {
      padding: 12px 14px;
    }

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

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid var(--card-border);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-quote {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      position: relative;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1f5f9;
      padding-top: 14px;
    }

    .reviewer-avatar-box {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--laser-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }

    .reviewer-name {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-main);
    }

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

    /* FAQ 手风琴 */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

    .faq-question {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-size: 16px;
      font-weight: 700;
      color: var(--text-main);
      user-select: none;
    }

    .faq-toggle-icon {
      font-size: 20px;
      font-weight: 400;
      color: #6366f1;
      transition: transform 0.3s ease;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      background: #fafafa;
      transition: max-height 0.35s ease, padding 0.35s ease;
    }

    .faq-item.active {
      border-color: rgba(99, 102, 241, 0.4);
    }

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

    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 16px 24px 20px;
      border-top: 1px solid #f1f5f9;
    }

    /* 需求表单模块 */
    .form-wrapper {
      max-width: 720px;
      margin: 0 auto;
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 1px solid var(--card-border);
      padding: 40px;
      box-shadow: var(--shadow-md);
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 20px;
    }

    .form-group-full {
      grid-column: span 2;
    }

    .form-label {
      display: block;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      font-size: 14px;
      color: var(--text-main);
      background: #ffffff;
      transition: var(--transition);
      outline: none;
    }

    .form-control:focus {
      border-color: var(--brand-primary);
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    }

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

    .form-submit-btn {
      width: 100%;
      font-size: 16px;
      padding: 14px;
      border: none;
      cursor: pointer;
    }

    /* 资讯与友情链接 */
    .article-links-box, .friend-links-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--card-border);
      box-shadow: var(--shadow-sm);
    }

    .links-flex {
      display: flex;
      flex-wrap: wrap;
      gap: 12px 20px;
      align-items: center;
    }

    .links-flex a {
      font-size: 13px;
      color: var(--text-muted);
      background: #f1f5f9;
      padding: 6px 14px;
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }

    .links-flex a:hover {
      background: #e0e7ff;
      color: var(--brand-primary);
    }

    /* 底部专属模块 */
    .site-footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 30px;
      border-top: 1px solid #1e293b;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }

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

    .footer-col p {
      font-size: 14px;
      line-height: 1.7;
      margin-bottom: 8px;
    }

    .footer-qr-card {
      width: 120px;
      background: #ffffff;
      padding: 8px;
      border-radius: var(--radius-sm);
      text-align: center;
    }

    .footer-qr-card img {
      width: 100%;
      height: auto;
      display: block;
    }

    .footer-qr-card span {
      font-size: 11px;
      color: var(--text-main);
      display: block;
      margin-top: 4px;
    }

    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: #64748b;
    }

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

    .kefu-trigger-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--laser-gradient);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 16px rgba(168, 85, 247, 0.4);
      cursor: pointer;
      border: none;
      transition: var(--transition);
    }

    .kefu-trigger-btn:hover {
      transform: scale(1.1);
    }

    .kefu-popover {
      position: absolute;
      right: 56px;
      bottom: 0;
      background: #ffffff;
      padding: 16px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      border: 1px solid var(--card-border);
      width: 180px;
      text-align: center;
      display: none;
    }

    .kefu-popover.active {
      display: block;
    }

    .kefu-popover img {
      width: 100%;
      height: auto;
      display: block;
      margin-bottom: 8px;
    }

    .kefu-popover p {
      font-size: 12px;
      color: var(--text-main);
      font-weight: 600;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-container {
        grid-template-columns: 1fr;
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .cases-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .review-score-board {
        grid-template-columns: 1fr;
      }
      .score-summary {
        border-right: none;
        border-bottom: 1px solid #e2e8f0;
        padding-right: 0;
        padding-bottom: 20px;
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid #e2e8f0;
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title {
        font-size: 28px;
      }
      .section-title {
        font-size: 24px;
      }
      .grid-3, .grid-4, .reviews-grid, .steps-grid {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group-full {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .review-highlights {
        grid-template-columns: 1fr;
      }
    }