/* 全局基底 —— 桃红艳丽风 */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    :root {
      --pink-deep: #c2185b;
      --pink-main: #e91e63;
      --pink-soft: #fce4ec;
      --pink-light: #f8bbd0;
      --pink-glow: #ff80ab;
      --text-dark: #2d1f2c;
      --text-body: #4a3a48;
      --white-warm: #fff9fb;
      --card-bg: #ffffff;
      --border-soft: #f3d9e2;
      --shadow-pink: rgba(233, 30, 99, 0.12);
      --shadow-deep: rgba(194, 24, 91, 0.18);
      --radius-card: 24px;
      --radius-btn: 50px;
      --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: var(--font-main);
      background: linear-gradient(145deg, #fff5f9 0%, #ffeef4 35%, #fff0f5 70%, #fff9fb 100%);
      color: var(--text-body);
      line-height: 1.7;
      font-size: 16px;
      min-height: 100vh;
    }

    /* 统一容器 */
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 按钮基础 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 15px;
      text-decoration: none;
      transition: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1);
      cursor: pointer;
      border: none;
      line-height: 1.4;
      white-space: nowrap;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--pink-main), var(--pink-deep));
      color: #fff;
      box-shadow: 0 8px 24px var(--shadow-pink);
    }

    .btn-primary:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 14px 32px var(--shadow-deep);
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--pink-main);
      color: var(--pink-deep);
    }

    .btn-outline:hover {
      background: var(--pink-soft);
      transform: translateY(-2px);
    }

    .btn-soft {
      background: #fff;
      color: var(--pink-deep);
      box-shadow: 0 4px 16px var(--shadow-pink);
    }

    .btn-soft:hover {
      background: var(--pink-soft);
      transform: translateY(-2px);
    }

    /* 导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 249, 251, 0.92);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-soft);
      box-shadow: 0 4px 20px rgba(233, 30, 99, 0.06);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 0;
      gap: 16px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      text-decoration: none;
      flex-shrink: 0;
    }

    .brand img {
      height: 42px;
      width: auto;
      display: block;
    }

    .brand-text {
      font-weight: 700;
      font-size: 20px;
      color: var(--pink-deep);
      letter-spacing: 1px;
    }

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

    .nav-links a {
      display: inline-block;
      padding: 8px 12px;
      color: var(--text-dark);
      text-decoration: none;
      font-size: 14px;
      font-weight: 500;
      border-radius: 30px;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .nav-links a:hover {
      background: var(--pink-soft);
      color: var(--pink-deep);
    }

    .nav-cta {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }

    .nav-cta .btn {
      padding: 10px 22px;
      font-size: 14px;
    }

    .menu-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }

    .menu-toggle span {
      width: 26px;
      height: 3px;
      background: var(--pink-deep);
      border-radius: 4px;
      transition: all 0.3s ease;
    }

    /* Hero 首屏 —— 无图片 */
    .hero {
      padding: 80px 0 64px;
      position: relative;
      overflow: hidden;
    }

    .hero::before {
      content: "";
      position: absolute;
      top: -30%;
      left: -10%;
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(233, 30, 99, 0.18) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
      animation: floatGlow 8s ease-in-out infinite alternate;
    }

    .hero::after {
      content: "";
      position: absolute;
      bottom: -20%;
      right: -8%;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(255, 128, 171, 0.22) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
      animation: floatGlow 10s ease-in-out infinite alternate-reverse;
    }

    @keyframes floatGlow {
      0% { transform: translate(0, 0) scale(1); }
      100% { transform: translate(30px, 20px) scale(1.15); }
    }

    .hero .container {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 44px;
      font-weight: 800;
      color: var(--text-dark);
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }

    .hero-content h1 em {
      font-style: normal;
      color: var(--pink-deep);
      position: relative;
    }

    .hero-content h1 em::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 4px;
      width: 100%;
      height: 8px;
      background: var(--pink-light);
      opacity: 0.6;
      z-index: -1;
      border-radius: 4px;
    }

    .hero-desc {
      font-size: 17px;
      color: var(--text-body);
      margin-bottom: 32px;
      max-width: 560px;
    }

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

    .hero-stats {
      display: flex;
      flex-wrap: wrap;
      gap: 25px 40px;
      padding-top: 24px;
      border-top: 1px solid var(--border-soft);
    }

    .hero-stat-item {
      display: flex;
      flex-direction: column;
    }

    .hero-stat-num {
      font-size: 28px;
      font-weight: 800;
      color: var(--pink-deep);
      line-height: 1.2;
    }

    .hero-stat-label {
      font-size: 13px;
      color: #8a6f7f;
      letter-spacing: 0.5px;
    }

    /* Hero 右侧装饰卡片 */
    .hero-visual {
      position: relative;
      display: flex;
      flex-direction: column;
      gap: 16px;
      align-items: stretch;
      justify-content: center;
      min-height: 300px;
    }

    .hero-float-card {
      background: #ffffff;
      border-radius: 20px;
      padding: 18px 22px;
      box-shadow: 0 12px 36px rgba(194, 24, 91, 0.12);
      border: 1px solid var(--border-soft);
      display: flex;
      align-items: center;
      gap: 14px;
      transition: transform 0.3s ease;
    }

    .hero-float-card:nth-child(1) {
      transform: translateX(-10px);
      animation: floatCard 5s ease-in-out infinite alternate;
    }

    .hero-float-card:nth-child(2) {
      transform: translateX(20px);
      animation: floatCard 6s ease-in-out infinite alternate-reverse;
    }

    .hero-float-card:nth-child(3) {
      transform: translateX(-4px);
      animation: floatCard 7s ease-in-out infinite alternate;
    }

    @keyframes floatCard {
      0% { transform: translateY(0) translateX(var(--tx, 0)); }
      100% { transform: translateY(-10px) translateX(var(--tx, 0)); }
    }

    .float-icon {
      width: 44px;
      height: 44px;
      border-radius: 14px;
      background: linear-gradient(135deg, var(--pink-light), var(--pink-soft));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      flex-shrink: 0;
    }

    .float-text strong {
      display: block;
      font-size: 15px;
      color: var(--text-dark);
    }

    .float-text span {
      font-size: 13px;
      color: #8a6f7f;
    }

    /* 通用区块 */
    .section {
      padding: 70px 0;
    }

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

    .section-head h2 {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 12px;
      letter-spacing: -0.3px;
    }

    .section-head p {
      font-size: 16px;
      color: #8a6f7f;
      max-width: 620px;
      margin: 0 auto;
    }

    /* 数据指标卡片 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .metric-card {
      background: #ffffff;
      border-radius: var(--radius-card);
      padding: 28px 20px;
      text-align: center;
      border: 1px solid var(--border-soft);
      box-shadow: 0 6px 20px rgba(233, 30, 99, 0.05);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .metric-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 20px 36px rgba(233, 30, 99, 0.12);
    }

    .metric-num {
      font-size: 38px;
      font-weight: 800;
      color: var(--pink-deep);
      line-height: 1.2;
      margin-bottom: 6px;
    }

    .metric-label {
      font-size: 14px;
      color: #8a6f7f;
    }

    /* 服务网格 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .service-card {
      background: #ffffff;
      border-radius: var(--radius-card);
      padding: 30px 24px;
      border: 1px solid var(--border-soft);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      position: relative;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 18px 36px var(--shadow-pink);
      border-color: var(--pink-light);
    }

    .service-icon {
      width: 52px;
      height: 52px;
      border-radius: 16px;
      background: linear-gradient(135deg, var(--pink-soft), #fff0f5);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 18px;
    }

    .service-card h3 {
      font-size: 19px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 10px;
    }

    .service-card p {
      font-size: 14px;
      color: var(--text-body);
      line-height: 1.65;
    }

    /* 流程步骤 */
    .steps-row {
      display: flex;
      gap: 0;
      counter-reset: step;
      flex-wrap: wrap;
      justify-content: center;
    }

    .step-item {
      flex: 1 1 0;
      min-width: 150px;
      text-align: center;
      position: relative;
      padding: 0 12px;
    }

    .step-item::after {
      content: "";
      position: absolute;
      top: 26px;
      right: -12px;
      width: 24px;
      height: 2px;
      background: var(--pink-light);
    }

    .step-item:last-child::after {
      display: none;
    }

    .step-num {
      width: 52px;
      height: 52px;
      margin: 0 auto 14px;
      border-radius: 50%;
      background: #fff;
      border: 3px solid var(--pink-main);
      color: var(--pink-deep);
      font-weight: 800;
      font-size: 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      z-index: 2;
      transition: background 0.3s ease, color 0.3s ease;
    }

    .step-item:hover .step-num {
      background: var(--pink-main);
      color: #fff;
    }

    .step-item h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 4px;
    }

    .step-item p {
      font-size: 13px;
      color: #8a6f7f;
    }

    /* 对比表格 */
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      background: #fff;
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: 0 10px 30px rgba(233, 30, 99, 0.06);
      border: 1px solid var(--border-soft);
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 20px;
      text-align: left;
      font-size: 14px;
      border-bottom: 1px solid #fce4ec;
    }

    .compare-table th {
      background: var(--pink-soft);
      color: var(--text-dark);
      font-weight: 700;
    }

    .compare-table td {
      color: var(--text-body);
    }

    .compare-table tr:last-child td {
      border-bottom: none;
    }

    .highlight-cell {
      background: #fff0f5;
      font-weight: 700;
      color: var(--pink-deep);
    }

    .rating-stars {
      color: #e91e63;
      font-size: 18px;
      letter-spacing: 2px;
    }

    .score-badge {
      display: inline-block;
      background: var(--pink-deep);
      color: #fff;
      font-weight: 800;
      padding: 4px 14px;
      border-radius: 30px;
      font-size: 14px;
    }

    /* FAQ */
    .faq-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }

    .faq-item {
      background: #fff;
      border-radius: 18px;
      border: 1px solid var(--border-soft);
      overflow: hidden;
      transition: box-shadow 0.3s ease;
    }

    .faq-item:hover {
      box-shadow: 0 8px 24px rgba(233, 30, 99, 0.08);
    }

    .faq-question {
      width: 100%;
      padding: 18px 22px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      background: none;
      border: none;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-dark);
      cursor: pointer;
      text-align: left;
      font-family: inherit;
      transition: background 0.2s;
    }

    .faq-question:hover {
      background: #fff5f9;
    }

    .faq-icon {
      font-size: 20px;
      color: var(--pink-main);
      transition: transform 0.3s ease;
      flex-shrink: 0;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.3s ease;
      padding: 0 22px;
      color: var(--text-body);
      font-size: 14px;
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      max-height: 220px;
      padding: 0 22px 20px;
    }

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

    .review-card {
      background: #fff;
      border-radius: var(--radius-card);
      padding: 26px 22px;
      border: 1px solid var(--border-soft);
      display: flex;
      flex-direction: column;
      transition: transform 0.3s ease;
    }

    .review-card:hover {
      transform: translateY(-4px);
    }

    .review-stars {
      color: #e91e63;
      font-size: 15px;
      letter-spacing: 2px;
      margin-bottom: 12px;
    }

    .review-text {
      font-size: 14px;
      color: var(--text-body);
      flex: 1;
      margin-bottom: 16px;
      line-height: 1.7;
    }

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

    .review-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: var(--pink-soft);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--pink-deep);
      font-size: 16px;
      flex-shrink: 0;
    }

    .review-user-info strong {
      display: block;
      font-size: 14px;
      color: var(--text-dark);
    }

    .review-user-info span {
      font-size: 12px;
      color: #8a6f7f;
    }

    /* 案例展示 */
    .case-gallery {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 22px;
    }

    .case-item {
      border-radius: 20px;
      overflow: hidden;
      background: #fff;
      border: 1px solid var(--border-soft);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .case-item:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 28px rgba(233, 30, 99, 0.1);
    }

    .case-img-wrap {
      width: 100%;
      aspect-ratio: 4 / 3;
      background: #fce4ec;
      overflow: hidden;
    }

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

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

    .case-label {
      padding: 14px 16px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-dark);
    }

    /* 文章列表 */
    .article-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .article-row {
      background: #fff;
      border-radius: 16px;
      padding: 20px 24px;
      border: 1px solid var(--border-soft);
      display: flex;
      align-items: center;
      gap: 16px;
      transition: all 0.25s ease;
      text-decoration: none;
    }

    .article-row:hover {
      background: #fff5f9;
      transform: translateX(6px);
    }

    .article-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--pink-main);
      flex-shrink: 0;
    }

    .article-title {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-dark);
      flex: 1;
    }

    .article-arrow {
      color: var(--pink-main);
      font-size: 18px;
      flex-shrink: 0;
    }

    /* 表单 */
    .form-section {
      background: #fff;
      border-radius: 32px;
      padding: 40px;
      box-shadow: 0 16px 48px rgba(194, 24, 91, 0.08);
      border: 1px solid var(--border-soft);
    }

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

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

    .form-group.full-width {
      grid-column: 1 / -1;
    }

    .form-group label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-dark);
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      padding: 14px 18px;
      border-radius: 16px;
      border: 1.5px solid #f0d6e0;
      background: #fffafc;
      font-family: inherit;
      font-size: 15px;
      color: var(--text-dark);
      transition: border 0.25s ease, box-shadow 0.25s ease;
      outline: none;
      width: 100%;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--pink-main);
      box-shadow: 0 0 0 4px rgba(233, 30, 99, 0.1);
    }

    .form-group textarea {
      resize: vertical;
      min-height: 120px;
    }

    .form-submit {
      grid-column: 1 / -1;
      margin-top: 8px;
    }

    .form-submit .btn {
      width: 100%;
      padding: 16px;
      font-size: 16px;
    }

    /* 页脚 */
    .site-footer {
      background: #2d1f2c;
      color: #f5e6ed;
      padding: 48px 0 28px;
      margin-top: 70px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 36px;
      margin-bottom: 36px;
    }

    .footer-brand img {
      height: 38px;
      width: auto;
      margin-bottom: 16px;
      display: block;
    }

    .footer-brand p {
      font-size: 14px;
      color: #d4bcc7;
      line-height: 1.7;
      max-width: 280px;
    }

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

    .footer-col a,
    .footer-col p {
      display: block;
      font-size: 14px;
      color: #d4bcc7;
      text-decoration: none;
      margin-bottom: 10px;
      transition: color 0.25s ease;
    }

    .footer-col a:hover {
      color: var(--pink-light);
    }

    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 8px 16px;
      margin-top: 6px;
    }

    .friend-links a {
      display: inline-block;
      font-size: 13px;
      color: #d4bcc7;
      text-decoration: none;
      margin-bottom: 0;
    }

    .friend-links a:hover {
      color: var(--pink-light);
    }

    .footer-bottom {
      border-top: 1px solid #4a3a48;
      padding-top: 20px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      font-size: 13px;
      color: #b8a0ad;
    }

    /* 浮动客服 */
    .float-kefu {
      position: fixed;
      right: 20px;
      bottom: 80px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
      align-items: center;
    }

    .kefu-btn {
      width: 54px;
      height: 54px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--pink-main), var(--pink-deep));
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      box-shadow: 0 8px 24px var(--shadow-deep);
      cursor: pointer;
      border: none;
      transition: transform 0.25s ease;
    }

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

    .kefu-qr-panel {
      background: #fff;
      border-radius: 18px;
      padding: 16px;
      box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
      text-align: center;
      display: none;
      position: absolute;
      right: 0;
      bottom: 70px;
      width: 180px;
    }

    .kefu-qr-panel img {
      width: 100%;
      height: auto;
      border-radius: 10px;
      display: block;
      margin-bottom: 8px;
    }

    .kefu-qr-panel span {
      font-size: 12px;
      color: var(--text-body);
    }

    .back-to-top {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #fff;
      border: 1.5px solid var(--border-soft);
      color: var(--pink-deep);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      cursor: pointer;
      box-shadow: 0 4px 16px var(--shadow-pink);
      transition: all 0.25s ease;
      text-decoration: none;
      opacity: 0;
      visibility: hidden;
    }

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

    .back-to-top:hover {
      background: var(--pink-soft);
      transform: translateY(-3px);
    }

    /* 滚动入场 */
    .reveal {
      opacity: 0;
      transform: translateY(28px);
      transition: opacity 0.65s ease, transform 0.65s ease;
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* 价格参考 */
    .price-tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      justify-content: center;
    }

    .price-tag {
      background: #fff;
      border-radius: 16px;
      padding: 14px 26px;
      border: 1px solid var(--border-soft);
      font-size: 15px;
      color: var(--text-dark);
      font-weight: 600;
      transition: all 0.3s ease;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .price-tag:hover {
      border-color: var(--pink-main);
      background: #fff5f9;
      transform: translateY(-3px);
    }

    .price-tag em {
      font-style: normal;
      color: var(--pink-deep);
      font-weight: 800;
    }

    /* 响应式 */
    @media (max-width: 1024px) {
      .hero .container {
        grid-template-columns: 1fr;
        gap: 36px;
      }

      .hero-content h1 {
        font-size: 36px;
      }

      .hero-visual {
        min-height: auto;
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
      }

      .hero-float-card {
        flex: 1 1 200px;
        animation: none;
      }

      .hero-float-card:nth-child(1),
      .hero-float-card:nth-child(2),
      .hero-float-card:nth-child(3) {
        transform: none;
      }

      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .service-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .case-gallery {
        grid-template-columns: repeat(2, 1fr);
      }

      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff9fb;
        flex-direction: column;
        padding: 16px 24px;
        gap: 4px;
        border-bottom: 1px solid var(--border-soft);
        box-shadow: 0 12px 24px rgba(233, 30, 99, 0.08);
      }

      .nav-links.open {
        display: flex;
      }

      .menu-toggle {
        display: flex;
      }

      .nav-cta .btn {
        display: none;
      }
    }

    @media (max-width: 768px) {
      .container {
        padding: 0 18px;
      }

      .hero {
        padding: 48px 0 40px;
      }

      .hero-content h1 {
        font-size: 30px;
      }

      .section {
        padding: 48px 0;
      }

      .section-head h2 {
        font-size: 26px;
      }

      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
      }

      .metric-num {
        font-size: 30px;
      }

      .service-grid {
        grid-template-columns: 1fr;
        gap: 20px;
      }

      .review-card {
        padding: 20px 18px;
      }

      .reviews-grid {
        grid-template-columns: 1fr;
      }

      .case-gallery {
        grid-template-columns: 1fr;
      }

      .form-section {
        padding: 24px 18px;
        border-radius: 22px;
      }

      .form-grid {
        grid-template-columns: 1fr;
      }

      .faq-grid {
        grid-template-columns: 1fr;
      }

      .steps-row {
        flex-direction: column;
        align-items: stretch;
        gap: 20px;
      }

      .step-item {
        display: flex;
        align-items: flex-start;
        text-align: left;
        gap: 16px;
        padding: 0;
      }

      .step-num {
        margin: 0;
        flex-shrink: 0;
      }

      .step-item::after {
        display: none;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .compare-table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
      }

      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }

    @media (max-width: 480px) {
      .hero-content h1 {
        font-size: 25px;
      }

      .hero-actions .btn {
        width: 100%;
        justify-content: center;
      }

      .metrics-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
      }

      .price-tag {
        padding: 12px 16px;
        font-size: 13px;
      }
    }

    /* 标签云 */
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .tag-cloud span {
      background: #fff;
      padding: 8px 18px;
      border-radius: 40px;
      font-size: 14px;
      color: var(--text-body);
      border: 1px solid var(--border-soft);
      transition: all 0.25s ease;
      cursor: default;
    }

    .tag-cloud span:hover {
      background: var(--pink-soft);
      color: var(--pink-deep);
      border-color: var(--pink-light);
      transform: translateY(-2px);
    }

    /* AI百科 */
    .encyclopedia-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 18px;
    }

    .encyclopedia-item {
      background: #fff;
      border-radius: 18px;
      padding: 22px;
      border: 1px solid var(--border-soft);
      transition: all 0.3s ease;
    }

    .encyclopedia-item:hover {
      border-color: var(--pink-light);
      box-shadow: 0 8px 24px var(--shadow-pink);
    }

    .encyclopedia-item h4 {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }

    .encyclopedia-item p {
      font-size: 14px;
      color: var(--text-body);
    }

    @media (max-width: 768px) {
      .encyclopedia-list {
        grid-template-columns: 1fr;
      }
    }