:root {
      --bg: #fdfbf7;
      --surface: #ffffff;
      --text: #1e1e2a;
      --text-soft: #4a4a5a;
      --primary: #4f46e5;
      --primary-soft: #eef2ff;
      --accent1: #f97316;
      --accent2: #06b6d4;
      --accent3: #ec4899;
      --rainbow: linear-gradient(135deg, #4f46e5, #06b6d4, #f97316, #ec4899);
      --border: #e9e8f0;
      --radius: 20px;
      --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.03);
      --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.06);
      --shadow-lg: 0 24px 48px -12px rgba(79, 70, 229, 0.18);
      --transition: all 0.25s cubic-bezier(0.2, 0, 0, 1);
      --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    }

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

    body {
      font-family: var(--font);
      background-color: var(--bg);
      background-image: radial-gradient(circle at 10% 20%, rgba(79, 70, 229, 0.04) 0%, transparent 32%),
                        radial-gradient(circle at 90% 80%, rgba(236, 72, 153, 0.04) 0%, transparent 40%),
                        linear-gradient(180deg, #fdfbf7 0%, #f8f7fc 100%);
      color: var(--text);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    header, main, footer {
      width: 100%;
    }

    /* ===== 导航 ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(253, 251, 247, 0.85);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(233, 232, 240, 0.7);
      transition: var(--transition);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 72px;
      gap: 20px;
    }

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

    .brand .logo {
      max-width: 120px;
      height: auto;
      display: block;
    }

    .brand-name {
      font-size: 1.2rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      background: var(--rainbow);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      white-space: nowrap;
    }

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

    .nav-links a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.92rem;
      color: var(--text-soft);
      text-decoration: none;
      border-radius: 8px;
      transition: var(--transition);
      font-weight: 500;
    }

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

    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 20px;
      background: var(--rainbow);
      color: #ffffff;
      font-weight: 600;
      font-size: 0.9rem;
      border: none;
      border-radius: 40px;
      text-decoration: none;
      transition: var(--transition);
      box-shadow: 0 8px 20px -6px rgba(79, 70, 229, 0.4);
      white-space: nowrap;
      cursor: pointer;
    }

    .nav-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 28px -8px rgba(79, 70, 229, 0.5);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: 1px solid var(--border);
      border-radius: 8px;
      cursor: pointer;
      padding: 8px 10px;
      color: var(--text);
      font-size: 1.3rem;
      line-height: 1;
    }

    /* ===== Hero ===== */
    .hero {
      position: relative;
      padding: 64px 0 80px;
      overflow: hidden;
    }

    .hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at 20% 30%, rgba(79, 70, 229, 0.08) 0%, transparent 45%),
                  radial-gradient(circle at 85% 70%, rgba(236, 72, 153, 0.06) 0%, transparent 40%),
                  radial-gradient(circle at 50% 100%, rgba(6, 182, 212, 0.05) 0%, transparent 50%);
      pointer-events: none;
      z-index: 0;
    }

    .hero .container {
      position: relative;
      z-index: 1;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }

    .hero-content {
      max-width: 580px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
      font-weight: 600;
      font-size: 0.85rem;
      padding: 6px 16px;
      border-radius: 40px;
      margin-bottom: 24px;
      border: 1px solid rgba(79, 70, 229, 0.12);
      letter-spacing: 0.02em;
    }

    .hero-badge::before {
      content: '';
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
      animation: pulse-dot 2s infinite;
    }

    @keyframes pulse-dot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.6; transform: scale(0.85); }
    }

    .hero h1 {
      font-size: clamp(2rem, 4.2vw, 3.2rem);
      font-weight: 800;
      line-height: 1.2;
      letter-spacing: -0.03em;
      color: var(--text);
      margin-bottom: 20px;
    }

    .hero h1 span {
      background: var(--rainbow);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .hero-desc {
      font-size: 1.1rem;
      color: var(--text-soft);
      margin-bottom: 32px;
      line-height: 1.7;
      max-width: 520px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 16px;
      margin-bottom: 28px;
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 32px;
      background: var(--rainbow);
      color: #ffffff;
      font-weight: 700;
      font-size: 1rem;
      border: none;
      border-radius: 50px;
      text-decoration: none;
      transition: var(--transition);
      box-shadow: 0 12px 28px -8px rgba(79, 70, 229, 0.45);
      cursor: pointer;
      line-height: 1.4;
    }

    .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 20px 36px -10px rgba(79, 70, 229, 0.55);
    }

    .btn-ghost {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 28px;
      background: transparent;
      color: var(--text);
      font-weight: 600;
      font-size: 1rem;
      border: 1.5px solid var(--border);
      border-radius: 50px;
      text-decoration: none;
      transition: var(--transition);
      cursor: pointer;
      line-height: 1.4;
    }

    .btn-ghost:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: var(--primary-soft);
      transform: translateY(-2px);
    }

    .hero-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      list-style: none;
      margin-top: 8px;
    }

    .hero-tags li {
      font-size: 0.82rem;
      padding: 4px 14px;
      background: #ffffff;
      border-radius: 40px;
      color: var(--text-soft);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border);
      transition: var(--transition);
    }

    .hero-tags li:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-1px);
    }

    /* Hero右侧可视化 */
    .hero-visual {
      position: relative;
      display: flex;
      flex-direction: column;
      gap: 16px;
      align-items: stretch;
    }

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

    .stat-card {
      background: #ffffff;
      border-radius: var(--radius);
      padding: 22px 20px;
      border: 1px solid rgba(233, 232, 240, 0.8);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .stat-card::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--rainbow);
      opacity: 0.8;
      border-radius: var(--radius) var(--radius) 0 0;
    }

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

    .stat-num {
      font-size: 1.8rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      background: var(--rainbow);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      line-height: 1.2;
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.85rem;
      color: var(--text-soft);
      font-weight: 500;
    }

    .visual-bar {
      background: #ffffff;
      border-radius: 16px;
      padding: 18px 22px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
      transition: var(--transition);
    }

    .visual-bar:hover {
      box-shadow: var(--shadow-md);
    }

    .visual-bar-label {
      font-size: 0.85rem;
      color: var(--text-soft);
      font-weight: 500;
    }

    .visual-bar-tags {
      display: flex;
      gap: 6px;
      flex-wrap: wrap;
    }

    .visual-bar-tags span {
      font-size: 0.72rem;
      padding: 3px 10px;
      border-radius: 40px;
      background: #f4f4ff;
      color: var(--primary);
      font-weight: 500;
    }

    /* ===== 通用 Section ===== */
    .section {
      padding: 72px 0;
      position: relative;
    }

    .section-head {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 48px;
    }

    .section-label {
      display: inline-block;
      font-size: 0.78rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--primary);
      background: var(--primary-soft);
      padding: 4px 14px;
      border-radius: 40px;
      margin-bottom: 14px;
    }

    .section-title {
      font-size: clamp(1.8rem, 3vw, 2.4rem);
      font-weight: 800;
      letter-spacing: -0.03em;
      color: var(--text);
      line-height: 1.25;
      margin-bottom: 12px;
    }

    .section-sub {
      font-size: 1rem;
      color: var(--text-soft);
      line-height: 1.7;
    }

    /* ===== 平台介绍 / 关于我们 ===== */
    .about-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 48px;
      align-items: start;
    }

    .about-text h2 {
      font-size: 1.8rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .about-text p {
      color: var(--text-soft);
      margin-bottom: 16px;
      font-size: 1rem;
      line-height: 1.75;
    }

    .about-highlights {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-top: 20px;
    }

    .about-highlight-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text);
      background: #ffffff;
      padding: 10px 14px;
      border-radius: 12px;
      border: 1px solid var(--border);
      transition: var(--transition);
    }

    .about-highlight-item:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }

    .about-highlight-item .dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--rainbow);
      flex-shrink: 0;
    }

    .about-card-box {
      background: #ffffff;
      border-radius: var(--radius);
      padding: 32px 28px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }

    .about-card-box h3 {
      font-size: 1.2rem;
      font-weight: 700;
      margin-bottom: 16px;
      color: var(--text);
    }

    .about-model-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .about-model-list span {
      font-size: 0.78rem;
      padding: 5px 12px;
      background: #f7f7fc;
      border-radius: 40px;
      color: var(--text-soft);
      border: 1px solid var(--border);
      transition: var(--transition);
    }

    .about-model-list span:hover {
      background: var(--primary-soft);
      color: var(--primary);
      border-color: var(--primary);
    }

    /* ===== 服务能力卡片 ===== */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
      gap: 20px;
    }

    .service-card {
      background: #ffffff;
      border-radius: var(--radius);
      padding: 28px 24px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: rgba(79, 70, 229, 0.2);
    }

    .service-icon {
      width: 48px;
      height: 48px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 18px;
      background: linear-gradient(135deg, #eef2ff, #fce7f3);
      color: var(--primary);
      transition: var(--transition);
    }

    .service-card:hover .service-icon {
      background: var(--rainbow);
      color: #ffffff;
    }

    .service-card h3 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text);
    }

    .service-card p {
      font-size: 0.88rem;
      color: var(--text-soft);
      line-height: 1.6;
    }

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

    .step-item {
      counter-increment: step;
      background: #ffffff;
      border-radius: var(--radius);
      padding: 30px 22px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: var(--transition);
      position: relative;
    }

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

    .step-num {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--rainbow);
      color: #ffffff;
      font-weight: 800;
      font-size: 1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      box-shadow: 0 8px 18px -6px rgba(79, 70, 229, 0.4);
    }

    .step-item h3 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .step-item p {
      font-size: 0.85rem;
      color: var(--text-soft);
      line-height: 1.55;
    }

    /* ===== 对比评测 ===== */
    .compare-wrap {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    .compare-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      padding: 24px 28px;
      background: linear-gradient(135deg, #f8f7ff 0%, #fef9f5 100%);
      border-bottom: 1px solid var(--border);
      flex-wrap: wrap;
    }

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

    .score-badge {
      font-size: 2.4rem;
      font-weight: 800;
      line-height: 1;
      background: var(--rainbow);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      letter-spacing: -0.04em;
    }

    .score-meta {
      display: flex;
      flex-direction: column;
    }

    .score-stars {
      color: #f59e0b;
      font-size: 1rem;
      letter-spacing: 2px;
    }

    .score-label {
      font-size: 0.8rem;
      color: var(--text-soft);
      font-weight: 500;
    }

    .compare-tag {
      font-size: 0.8rem;
      font-weight: 600;
      background: #ffffff;
      padding: 6px 16px;
      border-radius: 40px;
      border: 1px solid var(--border);
      color: var(--primary);
    }

    .table-scroll {
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }

    .compare-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 0.9rem;
      min-width: 680px;
    }

    .compare-table th,
    .compare-table td {
      padding: 16px 22px;
      text-align: left;
      border-bottom: 1px solid var(--border);
    }

    .compare-table th {
      background: #fafafc;
      font-weight: 700;
      color: var(--text);
      font-size: 0.85rem;
      letter-spacing: 0.02em;
      white-space: nowrap;
    }

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

    .compare-table tr:hover td {
      background: #fcfbff;
    }

    .compare-table .col-good {
      color: var(--text);
      font-weight: 600;
    }

    .compare-table .check {
      color: #16a34a;
      font-weight: 700;
    }

    /* ===== 案例中心 ===== */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }

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

    .case-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }

    .case-img {
      width: 100%;
      aspect-ratio: 16 / 10;
      object-fit: cover;
      display: block;
      background: #f3f3f8;
      transition: var(--transition);
    }

    .case-card:hover .case-img {
      transform: scale(1.03);
    }

    .case-body {
      padding: 18px 20px 22px;
    }

    .case-body h3 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .case-body p {
      font-size: 0.85rem;
      color: var(--text-soft);
      line-height: 1.6;
    }

    /* ===== 用户评论 ===== */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 20px;
    }

    .review-card {
      background: #ffffff;
      border-radius: var(--radius);
      padding: 26px 24px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

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

    .review-stars {
      color: #f59e0b;
      font-size: 0.9rem;
      letter-spacing: 2px;
    }

    .review-text {
      font-size: 0.9rem;
      color: var(--text-soft);
      line-height: 1.7;
      flex: 1;
    }

    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      padding-top: 12px;
      border-top: 1px solid var(--border);
    }

    .review-avatar {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--rainbow);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #ffffff;
      font-weight: 700;
      font-size: 0.85rem;
      flex-shrink: 0;
    }

    .review-info strong {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
    }

    .review-info span {
      font-size: 0.75rem;
      color: #8a8a9a;
    }

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

    .faq-item {
      background: #ffffff;
      border-radius: 16px;
      border: 1px solid var(--border);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: rgba(79, 70, 229, 0.2);
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      width: 100%;
      background: none;
      border: none;
      padding: 18px 24px;
      text-align: left;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      transition: var(--transition);
      font-family: var(--font);
    }

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

    .faq-question::after {
      content: '+';
      font-size: 1.3rem;
      font-weight: 400;
      color: var(--primary);
      transition: var(--transition);
      flex-shrink: 0;
      line-height: 1;
    }

    .faq-item.active .faq-question::after {
      content: '−';
      transform: rotate(180deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      padding: 0 24px;
    }

    .faq-item.active .faq-answer {
      max-height: 400px;
      padding: 0 24px 20px;
    }

    .faq-answer p {
      font-size: 0.9rem;
      color: var(--text-soft);
      line-height: 1.7;
    }

    /* ===== 文章列表 ===== */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
      gap: 18px;
    }

    .article-item {
      background: #ffffff;
      border-radius: 16px;
      padding: 22px 20px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      text-decoration: none;
      color: var(--text);
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .article-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: rgba(79, 70, 229, 0.2);
    }

    .article-item h3 {
      font-size: 0.95rem;
      font-weight: 700;
      line-height: 1.45;
    }

    .article-item p {
      font-size: 0.82rem;
      color: var(--text-soft);
      line-height: 1.6;
    }

    .article-arrow {
      margin-top: auto;
      color: var(--primary);
      font-weight: 600;
      font-size: 0.85rem;
    }

    /* ===== 表单 ===== */
    .form-wrap {
      max-width: 760px;
      margin: 0 auto;
      background: #ffffff;
      border-radius: var(--radius);
      padding: 36px 32px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-md);
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

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

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

    .form-group label {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text);
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
      padding: 12px 16px;
      border: 1px solid var(--border);
      border-radius: 10px;
      font-size: 0.9rem;
      font-family: var(--font);
      color: var(--text);
      background: #fcfbff;
      transition: var(--transition);
      outline: none;
      width: 100%;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
    }

    .form-group textarea {
      resize: vertical;
      min-height: 90px;
    }

    .form-submit {
      grid-column: 1 / -1;
      display: flex;
      justify-content: flex-start;
    }

    .form-submit .btn-primary {
      padding: 13px 40px;
    }

    /* ===== 客服入口 ===== */
    .contact-bar {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      background: linear-gradient(135deg, #f8f7ff 0%, #fef9f5 100%);
      border-radius: var(--radius);
      padding: 28px 32px;
      border: 1px solid var(--border);
      margin-top: 32px;
    }

    .contact-bar h3 {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 4px;
    }

    .contact-bar p {
      font-size: 0.88rem;
      color: var(--text-soft);
    }

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

    .contact-quick a,
    .contact-quick span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text);
      text-decoration: none;
      background: #ffffff;
      padding: 8px 16px;
      border-radius: 40px;
      border: 1px solid var(--border);
      transition: var(--transition);
    }

    .contact-quick a:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }

    /* ===== 友情链接 ===== */
    .links-box {
      text-align: center;
      margin-top: 48px;
      padding-top: 32px;
      border-top: 1px solid var(--border);
    }

    .links-box h3 {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-soft);
      margin-bottom: 14px;
      letter-spacing: 0.04em;
    }

    .links-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px 20px;
    }

    .links-list a {
      font-size: 0.85rem;
      color: var(--text-soft);
      text-decoration: none;
      transition: var(--transition);
    }

    .links-list a:hover {
      color: var(--primary);
      text-decoration: underline;
    }

    /* ===== 浮动客服 ===== */
    .floating-service {
      position: fixed;
      right: 20px;
      bottom: 100px;
      z-index: 90;
      display: flex;
      flex-direction: column;
      gap: 10px;
      align-items: flex-end;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: var(--transition);
      color: var(--primary);
      font-size: 1.2rem;
      text-decoration: none;
      position: relative;
    }

    .float-btn:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-lg);
      border-color: var(--primary);
    }

    .float-btn .tooltip {
      position: absolute;
      right: 60px;
      top: 50%;
      transform: translateY(-50%);
      background: var(--text);
      color: #ffffff;
      font-size: 0.75rem;
      padding: 5px 12px;
      border-radius: 6px;
      white-space: nowrap;
      opacity: 0;
      pointer-events: none;
      transition: var(--transition);
    }

    .float-btn:hover .tooltip {
      opacity: 1;
    }

    .back-top {
      opacity: 0;
      visibility: hidden;
      transition: var(--transition);
    }

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

    /* ===== 页脚 ===== */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border);
      padding: 48px 0 28px;
      color: var(--text);
      margin-top: 40px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 32px;
    }

    .footer-brand .logo {
      max-width: 110px;
      height: auto;
      margin-bottom: 12px;
      display: block;
    }

    .footer-brand p {
      font-size: 0.85rem;
      color: var(--text-soft);
      line-height: 1.7;
      max-width: 260px;
    }

    .footer-col h4 {
      font-size: 0.85rem;
      font-weight: 700;
      margin-bottom: 14px;
      color: var(--text);
      letter-spacing: 0.03em;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-col ul a {
      font-size: 0.82rem;
      color: var(--text-soft);
      text-decoration: none;
      transition: var(--transition);
    }

    .footer-col ul a:hover {
      color: var(--primary);
    }

    .footer-bottom {
      padding-top: 24px;
      border-top: 1px solid var(--border);
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      font-size: 0.8rem;
      color: #8a8a9a;
    }

    .footer-bottom a {
      color: var(--text-soft);
      text-decoration: none;
      transition: var(--transition);
    }

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

    /* ===== 动画类 ===== */
    .fade-up {
      opacity: 0;
      transform: translateY(24px);
      transition: opacity 0.6s cubic-bezier(0.2, 0, 0, 1), transform 0.6s cubic-bezier(0.2, 0, 0, 1);
    }

    .fade-up.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .hero-content {
        max-width: 100%;
        text-align: left;
      }
      .hero-desc {
        max-width: 100%;
      }
      .hero-visual {
        max-width: 560px;
      }
      .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .case-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px;
      }
    }

    @media (max-width: 768px) {
      .header-inner {
        min-height: 64px;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: stretch;
        padding: 12px 20px 20px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-md);
        gap: 4px;
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links a {
        padding: 10px 14px;
        font-size: 0.92rem;
        border-radius: 8px;
      }
      .menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
      }
      .nav-cta {
        display: none;
      }
      .hero {
        padding: 40px 0 56px;
      }
      .hero h1 {
        font-size: 1.8rem;
      }
      .hero-desc {
        font-size: 1rem;
      }
      .stat-card-row {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
      }
      .stat-num {
        font-size: 1.4rem;
      }
      .section {
        padding: 48px 0;
      }
      .section-head {
        margin-bottom: 32px;
      }
      .steps-grid {
        grid-template-columns: 1fr;
      }
      .case-grid {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-wrap {
        padding: 24px 20px;
      }
      .contact-bar {
        flex-direction: column;
        align-items: flex-start;
        padding: 22px 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .footer-brand p {
        max-width: 100%;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
      .floating-service {
        right: 12px;
        bottom: 80px;
      }
      .float-btn {
        width: 44px;
        height: 44px;
        font-size: 1.1rem;
      }
      .float-btn .tooltip {
        display: none;
      }
      .compare-header {
        flex-direction: column;
        align-items: flex-start;
        padding: 18px 20px;
      }
    }

    @media (max-width: 480px) {
      .hero h1 {
        font-size: 1.55rem;
      }
      .hero-actions {
        flex-direction: column;
        align-items: stretch;
      }
      .hero-actions .btn-primary,
      .hero-actions .btn-ghost {
        justify-content: center;
        width: 100%;
      }
      .stat-card-row {
        grid-template-columns: 1fr;
      }
      .about-highlights {
        grid-template-columns: 1fr;
      }
    }