:root {
      --primary: #f59e0b;
      --primary-bright: #fbbf24;
      --primary-dark: #d97706;
      --primary-light: #fffbeb;
      --accent: #111827;
      --text-main: #1f2937;
      --text-sub: #4b5563;
      --text-muted: #6b7280;
      --bg-page: #fefce8;
      --bg-surface: #ffffff;
      --bg-alt: #fef3c7;
      --border-color: #fde68a;
      --shadow-sm: 0 1px 3px rgba(217, 119, 6, 0.08);
      --shadow-md: 0 4px 12px rgba(217, 119, 6, 0.12);
      --shadow-lg: 0 10px 25px -3px rgba(217, 119, 6, 0.15);
      --radius: 12px;
      --container-width: 1200px;
      --transition: all 0.25s ease-in-out;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    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);
    }
    body {
      line-height: 1.6;
      overflow-x: hidden;
      background: radial-gradient(circle at top right, #fef08a 0%, #fefce8 40%, #ffffff 100%);
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 20px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 2px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo-box {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 20px;
      color: var(--accent);
    }
    .logo-box img {
      max-height: 40px;
      width: auto;
      display: block;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links a {
      display: inline-block;
      padding: 8px 12px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-sub);
      transition: var(--transition);
      border-radius: 6px;
    }
    .nav-links a:hover {
      color: var(--primary-dark);
      background-color: var(--bg-alt);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 8px;
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
    }
    .btn-primary {
      background: linear-gradient(135deg, #fbbf24 0%, #d97706 100%);
      color: #ffffff;
      box-shadow: 0 4px 10px rgba(217, 119, 6, 0.3);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, #f59e0b 0%, #b45309 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 14px rgba(217, 119, 6, 0.4);
    }
    .btn-secondary {
      background: #ffffff;
      color: var(--text-main);
      border-color: #d1d5db;
    }
    .btn-secondary:hover {
      background: var(--bg-alt);
      border-color: var(--primary);
    }
    .btn-large {
      padding: 14px 32px;
      font-size: 16px;
      border-radius: 10px;
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-main);
    }
    .hero-section {
      padding: 70px 0 60px;
      position: relative;
    }
    .hero-container {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      background-color: #fef3c7;
      border: 1px solid #fde68a;
      color: #92400e;
      border-radius: 30px;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 20px;
    }
    .hero-title {
      font-size: 40px;
      font-weight: 900;
      line-height: 1.3;
      color: #111827;
      margin-bottom: 20px;
      max-width: 860px;
    }
    .hero-title span {
      color: #b45309;
      background: linear-gradient(120deg, #d97706, #b45309);
      -webkit-background-clip: text;
      -webkit-text-fill-color: #b45309;
    }
    .hero-desc {
      font-size: 17px;
      color: var(--text-sub);
      max-width: 780px;
      margin-bottom: 32px;
      line-height: 1.7;
    }
    .hero-btns {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
    }
    .hero-stats {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      width: 100%;
      max-width: 1000px;
    }
    .stat-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .stat-num {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary-dark);
      margin-bottom: 6px;
    }
    .stat-label {
      font-size: 13px;
      color: var(--text-sub);
      font-weight: 500;
    }
    .section-wrap {
      padding: 80px 0;
      border-top: 1px solid #fef3c7;
    }
    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 50px;
    }
    .section-subtitle {
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      color: #b45309;
      margin-bottom: 8px;
    }
    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: var(--accent);
      margin-bottom: 14px;
    }
    .section-description {
      font-size: 15px;
      color: var(--text-sub);
    }
    .platform-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }
    .platform-features {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 30px;
    }
    .pf-item {
      background: #fffbeb;
      border: 1px solid #fde68a;
      border-radius: 8px;
      padding: 20px;
      transition: var(--transition);
    }
    .pf-item:hover {
      background: #fef3c7;
    }
    .pf-item h4 {
      font-size: 16px;
      font-weight: 700;
      color: #92400e;
      margin-bottom: 8px;
    }
    .pf-item p {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.6;
    }
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .service-item:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .service-badge {
      align-self: flex-start;
      background: #fef3c7;
      color: #b45309;
      font-size: 11px;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 12px;
    }
    .service-item h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--accent);
      margin-bottom: 10px;
    }
    .service-item p {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.6;
      flex-grow: 1;
    }
    .media-card-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      margin-bottom: 40px;
    }
    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .media-img-wrap {
      width: 100%;
      background: #fef3c7;
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .media-img-wrap img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }
    .media-card:hover .media-img-wrap img {
      transform: scale(1.03);
    }
    .media-body {
      padding: 20px;
    }
    .media-body h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .media-body p {
      font-size: 13px;
      color: var(--text-sub);
    }
    .model-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }
    .model-pill {
      background: #ffffff;
      border: 1px solid #fde68a;
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 600;
      color: #78350f;
      transition: var(--transition);
    }
    .model-pill:hover {
      background: #fef3c7;
      border-color: #d97706;
    }
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      position: relative;
    }
    .step-num {
      width: 36px;
      height: 36px;
      background: #fbbf24;
      color: #ffffff;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      font-size: 16px;
    }
    .step-box h4 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--accent);
    }
    .step-box p {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.5;
    }
    .compare-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
      box-shadow: var(--shadow-sm);
    }
    .score-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
      padding: 24px 30px;
      border-radius: 8px;
      margin-bottom: 24px;
      border: 1px solid #fcd34d;
    }
    .score-left h3 {
      font-size: 20px;
      color: #78350f;
      margin-bottom: 4px;
    }
    .score-left p {
      font-size: 14px;
      color: #92400e;
    }
    .score-badge {
      text-align: right;
    }
    .score-val {
      font-size: 38px;
      font-weight: 900;
      color: #b45309;
      line-height: 1;
    }
    .score-stars {
      color: #d97706;
      font-size: 18px;
      margin-top: 4px;
    }
    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 650px;
    }
    .compare-table th, .compare-table td {
      padding: 14px 16px;
      border-bottom: 1px solid #f3f4f6;
      font-size: 13px;
    }
    .compare-table th {
      background-color: #f9fafb;
      font-weight: 700;
      color: var(--accent);
    }
    .compare-table .highlight-col {
      background-color: #fffbeb;
      font-weight: 700;
      color: #92400e;
    }
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
    }
    .testimonial-content {
      font-size: 13px;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 16px;
      flex-grow: 1;
      font-style: italic;
    }
    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #fef3c7;
      padding-top: 14px;
    }
    .user-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: #fde68a;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #b45309;
      font-size: 14px;
    }
    .user-meta h5 {
      font-size: 14px;
      font-weight: 700;
      color: var(--accent);
    }
    .user-meta span {
      font-size: 12px;
      color: var(--text-muted);
    }
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-question {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 600;
      font-size: 15px;
      color: var(--accent);
    }
    .faq-question:hover {
      background-color: #fffbeb;
    }
    .faq-icon {
      font-size: 18px;
      transition: transform 0.25s ease;
      color: #d97706;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: #fafafa;
    }
    .faq-answer-inner {
      padding: 16px 24px;
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
      border-top: 1px solid #fef3c7;
    }
    .contact-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }
    .contact-info h3 {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 12px;
      color: var(--accent);
    }
    .contact-info p {
      font-size: 14px;
      color: var(--text-sub);
      margin-bottom: 24px;
    }
    .contact-details {
      display: flex;
      flex-direction: column;
      gap: 14px;
      margin-bottom: 24px;
    }
    .contact-row {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: var(--text-main);
    }
    .contact-qr {
      display: flex;
      align-items: center;
      gap: 20px;
      background: #fffbeb;
      padding: 16px;
      border-radius: 8px;
      border: 1px solid #fde68a;
    }
    .contact-qr img {
      width: 90px;
      height: 90px;
      border-radius: 6px;
      object-fit: cover;
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid #d1d5db;
      border-radius: 6px;
      font-size: 14px;
      color: var(--text-main);
      background: #ffffff;
      outline: none;
      transition: var(--transition);
    }
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
    }
    .form-group textarea {
      resize: vertical;
      min-height: 90px;
    }
    .banner-strip {
      margin-top: 40px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
    }
    .banner-item {
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .banner-item img {
      width: 100%;
      height: auto;
      display: block;
    }
    .site-footer {
      background: #1f2937;
      color: #d1d5db;
      padding: 60px 0 30px;
      margin-top: 60px;
      font-size: 13px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      font-size: 18px;
      color: #fbbf24;
      margin-bottom: 12px;
      font-weight: 800;
    }
    .footer-brand p {
      color: #9ca3af;
      line-height: 1.6;
      max-width: 320px;
      margin-bottom: 16px;
    }
    .footer-links h5 {
      color: #ffffff;
      font-size: 14px;
      margin-bottom: 14px;
      font-weight: 700;
    }
    .footer-links ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links a {
      color: #9ca3af;
      transition: var(--transition);
    }
    .footer-links a:hover {
      color: #fbbf24;
    }
    .friend-links {
      border-top: 1px solid #374151;
      padding: 20px 0;
      margin-bottom: 20px;
    }
    .friend-links-title {
      font-weight: 700;
      color: #9ca3af;
      margin-bottom: 10px;
    }
    .friend-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
    }
    .friend-links-list a {
      color: #9ca3af;
      transition: var(--transition);
    }
    .friend-links-list a:hover {
      color: #fbbf24;
    }
    .footer-bottom {
      border-top: 1px solid #374151;
      padding-top: 20px;
      text-align: center;
      color: #6b7280;
      font-size: 12px;
    }
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      z-index: 999;
    }
    .floating-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #fbbf24;
      color: #78350f;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
      cursor: pointer;
      border: none;
      transition: var(--transition);
    }
    .floating-btn:hover {
      background: #f59e0b;
      transform: scale(1.08);
    }
    @media (max-width: 992px) {
      .hero-stats {
        grid-template-columns: repeat(2, 1fr);
      }
      .service-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .platform-features {
        grid-template-columns: repeat(2, 1fr);
      }
      .step-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .contact-container {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .media-card-grid {
        grid-template-columns: 1fr;
      }
    }
    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 16px 0;
        border-bottom: 2px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.show {
        display: flex;
      }
      .hero-title {
        font-size: 28px;
      }
      .hero-desc {
        font-size: 15px;
      }
      .service-grid {
        grid-template-columns: 1fr;
      }
      .platform-features {
        grid-template-columns: 1fr;
      }
      .step-grid {
        grid-template-columns: 1fr;
      }
      .testimonial-grid {
        grid-template-columns: 1fr;
      }
      .banner-strip {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .score-banner {
        flex-direction: column;
        text-align: center;
        gap: 14px;
      }
      .score-badge {
        text-align: center;
      }
    }