:root {
      --primary-orange: #FF5A00;
      --deep-flame: #E03E00;
      --bright-amber: #FFA133;
      --soft-peach: #FFF5EE;
      --warm-bg: #FCFBF9;
      --text-dark: #1E2024;
      --text-muted: #585D69;
      --border-color: #EFECE6;
      --card-bg: #FFFFFF;
      --shadow-sm: 0 4px 12px rgba(255, 90, 0, 0.05);
      --shadow-md: 0 10px 24px rgba(224, 62, 0, 0.08);
      --shadow-lg: 0 16px 36px rgba(25, 20, 15, 0.08);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --container-max: 1200px;
    }
    * {
      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;
      color: var(--text-dark);
      background-color: var(--warm-bg);
      line-height: 1.6;
    }
    body {
      overflow-x: hidden;
      display: flex;
      flex-direction: column;
      min-height: 100vh;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.25s ease;
    }
    .page-container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-wrap img {
      max-height: 40px;
      width: auto;
      object-fit: contain;
    }
    .brand-text {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--deep-flame);
      letter-spacing: 0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links a {
      padding: 8px 14px;
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-dark);
      border-radius: var(--radius-sm);
    }
    .nav-links a:hover {
      color: var(--primary-orange);
      background-color: var(--soft-peach);
    }
    .header-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.92rem;
      font-weight: 600;
      border-radius: 999px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      white-space: nowrap;
    }
    .btn-flame {
      background: linear-gradient(135deg, var(--bright-amber) 0%, var(--primary-orange) 50%, var(--deep-flame) 100%);
      color: #FFFFFF;
      box-shadow: 0 4px 14px rgba(255, 90, 0, 0.3);
    }
    .btn-flame:hover {
      box-shadow: 0 6px 20px rgba(255, 90, 0, 0.45);
      transform: translateY(-2px);
      color: #FFFFFF;
    }
    .btn-outline {
      border-color: var(--primary-orange);
      color: var(--deep-flame);
      background: #FFFFFF;
    }
    .btn-outline:hover {
      background-color: var(--soft-peach);
      transform: translateY(-2px);
    }
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 6px;
    }
    .nav-toggle span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--text-dark);
      margin: 5px 0;
      transition: 0.3s;
    }
    .hero-section {
      background: radial-gradient(circle at 80% 20%, rgba(255, 161, 51, 0.18) 0%, rgba(255, 245, 238, 0.7) 45%, var(--warm-bg) 100%);
      padding: 80px 0 64px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-content {
      text-align: center;
      max-width: 860px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-block;
      padding: 6px 16px;
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--deep-flame);
      background: rgba(255, 90, 0, 0.1);
      border: 1px solid rgba(255, 90, 0, 0.25);
      border-radius: 999px;
      margin-bottom: 20px;
    }
    .hero-title {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-dark);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      color: var(--primary-orange);
    }
    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 36px;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 18px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }
    .stat-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 20px 16px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: transform 0.25s ease, box-shadow 0.25s ease;
    }
    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--bright-amber);
    }
    .stat-num {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary-orange);
      margin-bottom: 4px;
    }
    .stat-label {
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .section-wrap {
      padding: 80px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 50px auto;
    }
    .section-tag {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--deep-flame);
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
      display: inline-block;
    }
    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }
    .card {
      background: var(--card-bg);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
    }
    .card:hover {
      box-shadow: var(--shadow-md);
      border-color: rgba(255, 90, 0, 0.3);
      transform: translateY(-3px);
    }
    .card-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: var(--soft-peach);
      color: var(--deep-flame);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .card-title {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-dark);
    }
    .card-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }
    .model-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 30px;
      justify-content: center;
    }
    .model-badge {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: 999px;
      font-size: 0.85rem;
      color: var(--text-dark);
      font-weight: 500;
      transition: all 0.2s ease;
    }
    .model-badge:hover {
      border-color: var(--primary-orange);
      color: var(--deep-flame);
      background: var(--soft-peach);
    }
    .step-flow {
      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-md);
      padding: 24px 20px;
      position: relative;
    }
    .step-index {
      font-size: 1.8rem;
      font-weight: 900;
      color: rgba(255, 90, 0, 0.2);
      line-height: 1;
      margin-bottom: 12px;
    }
    .step-title {
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 0.88rem;
      color: var(--text-muted);
    }
    .media-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .media-img-wrap {
      width: 100%;
      background: #F0EEEA;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }
    .media-img-wrap.aspect-banner {
      aspect-ratio: 16 / 9;
    }
    .media-img-wrap.aspect-square {
      aspect-ratio: 1 / 1;
    }
    .media-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.3s ease;
    }
    .media-card:hover .media-img-wrap img {
      transform: scale(1.03);
    }
    .media-body {
      padding: 20px;
    }
    .table-container {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
    }
    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
      font-size: 0.92rem;
    }
    .custom-table th {
      background: var(--soft-peach);
      color: var(--deep-flame);
      font-weight: 700;
    }
    .custom-table tr:hover {
      background: #FDFCF9;
    }
    .rating-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #FFF0E6;
      border: 1px solid #FFD1B3;
      padding: 4px 10px;
      border-radius: 6px;
      color: var(--deep-flame);
      font-weight: 700;
    }
    .faq-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: border-color 0.2s ease;
    }
    .faq-item.active {
      border-color: var(--primary-orange);
    }
    .faq-question {
      padding: 18px 24px;
      cursor: pointer;
      font-weight: 600;
      font-size: 1rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }
    .faq-question:hover {
      color: var(--primary-orange);
    }
    .faq-toggle-icon {
      font-size: 1.2rem;
      transition: transform 0.25s ease;
      color: var(--primary-orange);
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 24px;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.6;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding-bottom: 18px;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--bright-amber), var(--deep-flame));
      color: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }
    .user-name {
      font-weight: 700;
      font-size: 0.95rem;
    }
    .user-role {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .form-wrap {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-md);
      max-width: 680px;
      margin: 0 auto;
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-dark);
    }
    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      background: #FAFAF8;
      outline: none;
      transition: border-color 0.2s;
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--primary-orange);
      background: #FFFFFF;
    }
    .form-textarea {
      min-height: 100px;
      resize: vertical;
    }
    .form-submit-btn {
      width: 100%;
      padding: 14px;
      font-size: 1rem;
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
    }
    .contact-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
    }
    .contact-qr-wrap {
      text-align: center;
      padding: 20px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
    }
    .contact-qr-wrap img {
      max-width: 160px;
      height: auto;
      border-radius: 8px;
      margin-bottom: 8px;
      border: 1px solid var(--border-color);
    }
    .site-footer {
      background: #18191B;
      color: #E1E3E8;
      padding: 60px 0 24px 0;
      border-top: 1px solid #282A2E;
      font-size: 0.88rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 2fr;
      gap: 36px;
      margin-bottom: 40px;
    }
    .footer-title {
      font-size: 1rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 16px;
    }
    .footer-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-list a {
      color: #A3A8B5;
    }
    .footer-list a:hover {
      color: var(--primary-orange);
    }
    .footer-bottom {
      border-top: 1px solid #2B2E34;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      color: #8C91A0;
      flex-wrap: wrap;
      gap: 12px;
    }
    .friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 20px;
      padding-bottom: 20px;
      border-bottom: 1px solid #2B2E34;
    }
    .friend-links a {
      color: #A3A8B5;
    }
    .friend-links a:hover {
      color: var(--primary-orange);
    }
    .fixed-kefu {
      position: fixed;
      right: 20px;
      bottom: 80px;
      z-index: 990;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 10px 14px;
      box-shadow: var(--shadow-lg);
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 6px;
      cursor: pointer;
      transition: transform 0.25s ease;
    }
    .fixed-kefu:hover {
      transform: scale(1.05);
      border-color: var(--primary-orange);
    }
    .fixed-kefu span {
      font-size: 0.78rem;
      font-weight: 700;
      color: var(--deep-flame);
    }
    .back-to-top {
      position: fixed;
      right: 20px;
      bottom: 24px;
      z-index: 990;
      width: 40px;
      height: 40px;
      background: var(--text-dark);
      color: #FFFFFF;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      opacity: 0;
      visibility: hidden;
      transition: all 0.25s ease;
    }
    .back-to-top.show {
      opacity: 1;
      visibility: visible;
    }
    .back-to-top:hover {
      background: var(--primary-orange);
    }
    @media (max-width: 992px) {
      .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3, .grid-4, .step-flow {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
    }
    @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 var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-toggle {
        display: block;
      }
      .header-cta .btn-outline {
        display: none;
      }
      .hero-title {
        font-size: 2rem;
      }
      .grid-2, .grid-3, .grid-4, .step-flow {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .form-wrap {
        padding: 24px 16px;
      }
    }