:root {
      --primary-red: #d32f2f;
      --deep-red: #9a0007;
      --bright-red: #ff3d00;
      --accent-gold: #ffb300;
      --bg-light: #fff8f8;
      --bg-card: #ffffff;
      --text-main: #1f1f1f;
      --text-sub: #555555;
      --text-muted: #888888;
      --border-color: #f3d4d4;
      --container-max: 1200px;
      --shadow-sm: 0 4px 12px rgba(211, 47, 47, 0.06);
      --shadow-md: 0 8px 24px rgba(211, 47, 47, 0.12);
      --shadow-lg: 0 16px 36px rgba(211, 47, 47, 0.18);
      --radius: 12px;
      --transition: all 0.3s ease;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    .site-container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 20px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 20px;
      color: var(--deep-red);
    }
    .brand-logo img {
      max-height: 42px;
      width: auto;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links a {
      padding: 8px 12px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-main);
      border-radius: 6px;
      white-space: nowrap;
    }
    .nav-links a:hover {
      color: var(--primary-red);
      background-color: rgba(211, 47, 47, 0.05);
    }
    .nav-cta {
      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;
      text-align: center;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--bright-red), var(--primary-red));
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(211, 47, 47, 0.35);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-red), var(--deep-red));
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(211, 47, 47, 0.45);
      color: #ffffff;
    }
    .btn-outline {
      border-color: var(--primary-red);
      color: var(--primary-red);
      background: #ffffff;
    }
    .btn-outline:hover {
      background: var(--primary-red);
      color: #ffffff;
    }
    .btn-gold {
      background: linear-gradient(135deg, var(--accent-gold), #ff8f00);
      color: #ffffff;
    }
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--primary-red);
      cursor: pointer;
    }

    .hero-section {
      padding: 80px 0 60px;
      background: radial-gradient(circle at 50% 20%, #ffebee 0%, #fff8f8 70%);
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 16px;
      background: rgba(211, 47, 47, 0.08);
      border: 1px solid var(--border-color);
      border-radius: 50px;
      color: var(--deep-red);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 40px;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      background: linear-gradient(135deg, var(--bright-red), var(--deep-red));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      max-width: 820px;
      margin: 0 auto 36px;
      font-size: 17px;
      color: var(--text-sub);
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      max-width: 960px;
      margin: 0 auto;
    }
    .stat-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      padding: 20px 16px;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      text-align: center;
    }
    .stat-num {
      font-size: 28px;
      font-weight: 800;
      color: var(--primary-red);
      margin-bottom: 4px;
    }
    .stat-label {
      font-size: 13px;
      color: var(--text-muted);
    }

    .section {
      padding: 70px 0;
      border-bottom: 1px solid #fce8e8;
    }
    .section-header {
      text-align: center;
      margin-bottom: 48px;
    }
    .section-tag {
      font-size: 13px;
      font-weight: 700;
      text-transform: uppercase;
      color: var(--bright-red);
      letter-spacing: 1px;
      margin-bottom: 8px;
      display: block;
    }
    .section-title {
      font-size: 30px;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .section-subtitle {
      font-size: 15px;
      color: var(--text-sub);
      max-width: 680px;
      margin: 0 auto;
    }

    .platform-intro-card {
      background: linear-gradient(135deg, #ffffff, #fff5f5);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: var(--shadow-sm);
      margin-bottom: 30px;
    }
    .platform-features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 30px;
    }
    .feature-item {
      background: #ffffff;
      padding: 24px;
      border-radius: 10px;
      border: 1px solid #f6dede;
      border-left: 4px solid var(--primary-red);
    }
    .feature-item h4 {
      font-size: 17px;
      color: var(--deep-red);
      margin-bottom: 8px;
    }
    .feature-item p {
      font-size: 14px;
      color: var(--text-sub);
    }

    .model-tags-wrapper {
      background: #ffffff;
      padding: 30px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      text-align: center;
    }
    .tags-container {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 20px;
    }
    .model-tag {
      padding: 6px 14px;
      background: #fff0f0;
      color: var(--deep-red);
      border-radius: 6px;
      font-size: 13px;
      font-weight: 600;
      border: 1px solid #fcdada;
      transition: var(--transition);
    }
    .model-tag:hover {
      background: var(--primary-red);
      color: #ffffff;
    }

    .card-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .card-grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--bright-red);
    }
    .service-icon {
      width: 44px;
      height: 44px;
      background: #ffebee;
      color: var(--primary-red);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 18px;
      margin-bottom: 18px;
    }
    .service-card h3 {
      font-size: 18px;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .service-card p {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
    }

    .process-timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }
    .process-step {
      background: #ffffff;
      padding: 24px 16px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      text-align: center;
      position: relative;
    }
    .step-badge {
      width: 32px;
      height: 32px;
      background: var(--primary-red);
      color: #fff;
      border-radius: 50%;
      margin: 0 auto 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }
    .process-step h4 {
      font-size: 15px;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .process-step p {
      font-size: 12px;
      color: var(--text-sub);
    }

    .media-gallery-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 20px;
      margin-top: 24px;
    }
    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .media-card img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }
    .media-info {
      padding: 18px;
    }
    .media-info h4 {
      font-size: 16px;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .media-info p {
      font-size: 13px;
      color: var(--text-sub);
    }

    .banner-showcase {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
      margin-top: 30px;
    }
    .banner-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
    }
    .banner-card img {
      width: 100%;
      height: auto;
      display: block;
    }

    .table-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f6dede;
    }
    .custom-table th {
      background: #fff5f5;
      color: var(--deep-red);
      font-weight: 700;
      font-size: 14px;
    }
    .custom-table td {
      font-size: 14px;
      color: var(--text-main);
    }
    .highlight-col {
      background: #fffcfc;
      font-weight: 600;
      color: var(--primary-red);
    }
    .badge-star {
      background: #ffebee;
      color: var(--primary-red);
      padding: 4px 10px;
      border-radius: 4px;
      font-weight: 700;
      display: inline-block;
    }

    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-stars {
      color: #ff9800;
      margin-bottom: 10px;
      font-size: 14px;
    }
    .review-text {
      font-size: 14px;
      color: var(--text-sub);
      line-height: 1.6;
      margin-bottom: 16px;
      font-style: italic;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #fce8e8;
      padding-top: 12px;
    }
    .author-avatar {
      width: 40px;
      height: 40px;
      background: #ffebee;
      color: var(--primary-red);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }
    .author-info h5 {
      font-size: 14px;
      color: var(--text-main);
    }
    .author-info span {
      font-size: 12px;
      color: var(--text-muted);
    }

    .faq-list {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 8px;
      margin-bottom: 12px;
      overflow: hidden;
    }
    .faq-question {
      padding: 18px 22px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 600;
      font-size: 15px;
      color: var(--text-main);
      background: #ffffff;
      transition: var(--transition);
    }
    .faq-question:hover {
      background: #fff8f8;
      color: var(--primary-red);
    }
    .faq-icon {
      font-size: 18px;
      color: var(--primary-red);
      transition: var(--transition);
    }
    .faq-answer {
      padding: 0 22px;
      max-height: 0;
      overflow: hidden;
      transition: all 0.3s cubic-bezier(0, 1, 0, 1);
      background: #fffafa;
      color: var(--text-sub);
      font-size: 14px;
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      padding: 18px 22px;
      max-height: 500px;
      transition: all 0.3s cubic-bezier(1, 0, 1, 0);
      border-top: 1px solid #f6dede;
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    .contact-form-layout {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 36px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }
    .contact-info-panel h3 {
      font-size: 22px;
      color: var(--deep-red);
      margin-bottom: 16px;
    }
    .contact-info-panel p {
      font-size: 14px;
      color: var(--text-sub);
      margin-bottom: 24px;
    }
    .contact-methods-list {
      list-style: none;
      margin-bottom: 24px;
    }
    .contact-methods-list li {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .contact-qr {
      text-align: center;
      width: 140px;
    }
    .contact-qr img {
      width: 100%;
      height: auto;
      border-radius: 8px;
      border: 1px solid #f6dede;
    }
    .contact-qr span {
      font-size: 12px;
      color: var(--text-muted);
      margin-top: 6px;
      display: block;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid var(--border-color);
      border-radius: 6px;
      font-size: 14px;
      color: var(--text-main);
      outline: none;
      background: #fffdfd;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--primary-red);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.1);
    }

    .news-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .news-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 20px;
    }
    .news-card h4 {
      font-size: 16px;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .news-links-box {
      margin-top: 14px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .news-links-box a {
      font-size: 12px;
      padding: 4px 10px;
      background: #fff5f5;
      border: 1px solid #fcdada;
      border-radius: 4px;
      color: var(--deep-red);
    }
    .news-links-box a:hover {
      background: var(--primary-red);
      color: #fff;
    }

    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 48px 0 24px;
      color: var(--text-sub);
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 30px;
      margin-bottom: 36px;
    }
    .footer-brand h4 {
      color: var(--deep-red);
      font-size: 18px;
      margin-bottom: 12px;
    }
    .footer-brand p {
      font-size: 13px;
      line-height: 1.6;
    }
    .footer-col h5 {
      color: var(--text-main);
      font-size: 15px;
      margin-bottom: 14px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 8px;
    }
    .footer-col ul li a {
      font-size: 13px;
      color: var(--text-sub);
    }
    .footer-col ul li a:hover {
      color: var(--primary-red);
    }
    .friend-links {
      border-top: 1px solid #f6dede;
      padding-top: 20px;
      margin-bottom: 20px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 12px;
      font-size: 13px;
    }
    .friend-links span {
      font-weight: 600;
      color: var(--text-main);
    }
    .friend-links a {
      color: var(--text-sub);
    }
    .friend-links a:hover {
      color: var(--primary-red);
    }
    .footer-bottom {
      border-top: 1px solid #f6dede;
      padding-top: 20px;
      text-align: center;
      font-size: 13px;
      color: var(--text-muted);
    }

    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: var(--primary-red);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      box-shadow: 0 4px 12px rgba(211, 47, 47, 0.3);
      cursor: pointer;
      border: none;
      transition: var(--transition);
    }
    .float-btn:hover {
      transform: scale(1.08);
      background: var(--deep-red);
    }
    .float-qr-box {
      position: absolute;
      right: 56px;
      bottom: 0;
      background: #ffffff;
      padding: 12px;
      border-radius: 8px;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      display: none;
      width: 130px;
      text-align: center;
    }
    .float-qr-box img {
      width: 100%;
      height: auto;
    }
    .float-qr-box span {
      font-size: 12px;
      color: var(--text-sub);
      display: block;
      margin-top: 4px;
    }
    .float-service:hover .float-qr-box {
      display: block;
    }

    @media (max-width: 992px) {
      .hero-title { font-size: 32px; }
      .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
      .card-grid-3 { grid-template-columns: repeat(2, 1fr); }
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .process-timeline { grid-template-columns: repeat(2, 1fr); }
      .media-gallery-grid { grid-template-columns: 1fr; }
      .contact-form-layout { grid-template-columns: 1fr; }
      .reviews-grid { grid-template-columns: 1fr; }
      .footer-top { grid-template-columns: 1fr 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: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        border-bottom: 1px solid var(--border-color);
      }
      .nav-links.active { display: flex; }
      .nav-links a { width: 100%; text-align: center; padding: 10px; }
      .nav-cta { display: none; }
      .card-grid-3, .card-grid-4, .banner-showcase { grid-template-columns: 1fr; }
      .platform-features-grid { grid-template-columns: 1fr; }
      .process-timeline { grid-template-columns: 1fr; }
      .footer-top { grid-template-columns: 1fr; }
      .hero-stats-grid { grid-template-columns: 1fr; }
    }