:root {
      --primary-red: #d32f2f;
      --primary-red-hover: #b71c1c;
      --accent-gold: #ff6f00;
      --bg-warm: #fff9f8;
      --bg-card: #ffffff;
      --border-color: #ffd8d6;
      --text-main: #1f2329;
      --text-muted: #5f6672;
      --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --container-width: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: var(--font-family);
      background-color: var(--bg-warm);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color 0.2s ease;
    }
    img {
      display: block;
      max-width: 100%;
      height: auto;
    }
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding: 0 20px;
    }
    .section-wrap {
      padding: 70px 0;
      border-bottom: 1px solid #fae6e5;
    }
    .section-title-wrap {
      text-align: center;
      margin-bottom: 45px;
    }
    .section-tag {
      display: inline-block;
      background: #ffebee;
      color: var(--primary-red);
      font-size: 13px;
      font-weight: 600;
      padding: 4px 14px;
      border-radius: 20px;
      margin-bottom: 10px;
      border: 1px solid #ffcdd2;
    }
    .section-title {
      font-size: 28px;
      font-weight: 800;
      color: #2b1110;
      margin-bottom: 10px;
    }
    .section-desc {
      font-size: 15px;
      color: var(--text-muted);
      max-width: 700px;
      margin: 0 auto;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 12px 26px;
      font-size: 15px;
      font-weight: 600;
      border-radius: 6px;
      cursor: pointer;
      border: none;
      transition: all 0.25s ease;
      gap: 6px;
    }
    .btn-primary {
      background: linear-gradient(135deg, #e53935 0%, #c62828 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(229, 57, 53, 0.35);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, #c62828 0%, #b71c1c 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(229, 57, 53, 0.45);
      color: #ffffff;
    }
    .btn-outline {
      background: #ffffff;
      color: var(--primary-red);
      border: 1.5px solid var(--primary-red);
    }
    .btn-outline:hover {
      background: #ffebee;
      transform: translateY(-2px);
    }
    
    /* Header */
    header.site-header {
      position: sticky;
      top: 0;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      z-index: 1000;
      border-bottom: 1px solid #f8d7da;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-logo-wrap img {
      max-height: 42px;
      width: auto;
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 0;
    }
    .nav-links li a {
      padding: 8px 14px;
      font-size: 14px;
      font-weight: 500;
      color: #333;
      border-radius: 4px;
      white-space: nowrap;
    }
    .nav-links li a:hover {
      color: var(--primary-red);
      background: #fff5f5;
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    /* Hero */
    .hero-section {
      background: radial-gradient(circle at 80% 20%, #ffeae8 0%, #ffffff 60%, #fff3f2 100%);
      padding: 80px 0 60px 0;
      position: relative;
    }
    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-badge {
      display: inline-block;
      padding: 6px 16px;
      background: #ffebee;
      color: var(--primary-red);
      font-size: 13px;
      font-weight: 700;
      border-radius: 30px;
      border: 1px solid #ffcdd2;
      margin-bottom: 20px;
      letter-spacing: 0.5px;
    }
    .hero-title {
      font-size: 38px;
      line-height: 1.35;
      font-weight: 900;
      color: #1a1a1a;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-title span {
      color: var(--primary-red);
      background: linear-gradient(135deg, #d32f2f, #ff5722);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-subtitle {
      font-size: 16px;
      color: #4b5563;
      line-height: 1.7;
      margin-bottom: 35px;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .hero-metrics {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      background: #ffffff;
      padding: 24px;
      border-radius: 12px;
      border: 1px solid #fbd0ce;
      box-shadow: 0 10px 30px rgba(211, 47, 47, 0.06);
    }
    .metric-item {
      text-align: center;
      border-right: 1px solid #f0f0f0;
    }
    .metric-item:last-child {
      border-right: none;
    }
    .metric-val {
      font-size: 26px;
      font-weight: 800;
      color: var(--primary-red);
    }
    .metric-lbl {
      font-size: 13px;
      color: #666;
      margin-top: 4px;
    }

    /* Model Tags Banner */
    .model-tags-bar {
      background: #fff;
      padding: 16px;
      border-radius: 8px;
      border: 1px solid #ffdcd9;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      justify-content: center;
      align-items: center;
      margin-top: 25px;
    }
    .model-tag {
      background: #fff5f5;
      color: #8c1d18;
      font-size: 12px;
      font-weight: 600;
      padding: 4px 10px;
      border-radius: 4px;
      border: 1px solid #ffd6d4;
    }

    /* Grid layout */
    .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: 30px;
    }

    /* Cards */
    .feature-card {
      background: var(--bg-card);
      border: 1px solid #fce3e1;
      border-radius: 10px;
      padding: 24px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 24px rgba(211, 47, 47, 0.08);
      border-color: #f8b4b0;
    }
    .card-icon-title {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }
    .card-badge-num {
      width: 32px;
      height: 32px;
      background: #ffebee;
      color: var(--primary-red);
      border-radius: 6px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
    }
    .card-title {
      font-size: 17px;
      font-weight: 700;
      color: #222;
    }
    .card-desc {
      font-size: 13.5px;
      color: #555;
      line-height: 1.6;
    }

    /* Media Banner Showcase */
    .media-card {
      background: #ffffff;
      border: 1px solid #ffdcd9;
      border-radius: 10px;
      overflow: hidden;
      box-shadow: 0 4px 15px rgba(0,0,0,0.03);
    }
    .media-card-img-wrap {
      width: 100%;
      background: #fdf2f2;
    }
    .media-card-body {
      padding: 20px;
    }
    .media-card-title {
      font-size: 17px;
      font-weight: 700;
      color: #2b1110;
      margin-bottom: 8px;
    }
    .media-card-text {
      font-size: 13.5px;
      color: #666;
    }

    /* Comparison Table */
    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #fff;
      border-radius: 10px;
      border: 1px solid #ffdcd9;
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.03);
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 650px;
    }
    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #ffe8e7;
    }
    .custom-table th {
      background: #fff0ef;
      color: #333;
      font-weight: 700;
      font-size: 14px;
    }
    .custom-table tr:last-child td {
      border-bottom: none;
    }
    .custom-table tr.highlight-row {
      background: #fffafa;
    }
    .rating-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #ffebee;
      color: var(--primary-red);
      padding: 4px 10px;
      border-radius: 4px;
      font-weight: 700;
    }

    /* Steps Flow */
    .steps-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-box {
      background: #ffffff;
      border: 1px solid #ffe1df;
      padding: 24px;
      border-radius: 8px;
      text-align: center;
    }
    .step-circle {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, #e53935, #c62828);
      color: #fff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 800;
      margin: 0 auto 16px;
    }
    .step-box h4 {
      font-size: 16px;
      margin-bottom: 8px;
      color: #222;
    }
    .step-box p {
      font-size: 13px;
      color: #666;
    }

    /* FAQ Accordion */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid #fbdad8;
      border-radius: 8px;
      overflow: hidden;
    }
    .faq-question {
      padding: 16px 20px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 15px;
      font-weight: 600;
      color: #2b1110;
      background: #ffffff;
      transition: background 0.2s;
    }
    .faq-question:hover {
      background: #fff8f8;
    }
    .faq-answer {
      padding: 0 20px 16px;
      font-size: 14px;
      color: #555;
      line-height: 1.6;
      display: none;
      border-top: 1px dashed #ffe3e1;
      padding-top: 14px;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .faq-icon {
      font-size: 18px;
      color: var(--primary-red);
      font-weight: 700;
    }

    /* Testimonials */
    .testimonial-card {
      background: #fff;
      border: 1px solid #ffdcd9;
      border-radius: 10px;
      padding: 22px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .testimonial-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #ffebee;
      color: var(--primary-red);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 15px;
    }
    .testimonial-name {
      font-size: 15px;
      font-weight: 700;
      color: #222;
    }
    .testimonial-role {
      font-size: 12px;
      color: #777;
    }
    .testimonial-content {
      font-size: 13.5px;
      color: #444;
      line-height: 1.6;
      font-style: normal;
    }

    /* Form & Contact */
    .contact-form-box {
      background: #ffffff;
      border: 1px solid #fbd0ce;
      border-radius: 12px;
      padding: 30px;
      box-shadow: 0 8px 24px rgba(211, 47, 47, 0.05);
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 13.5px;
      font-weight: 600;
      color: #333;
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 10px 14px;
      font-size: 14px;
      border: 1px solid #e0c8c6;
      border-radius: 6px;
      outline: none;
      background: #fffafa;
      color: #333;
      transition: border-color 0.2s;
    }
    .form-control:focus {
      border-color: var(--primary-red);
      background: #ffffff;
    }
    textarea.form-control {
      resize: vertical;
      min-height: 90px;
    }

    /* Links Section */
    .articles-links-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 15px;
    }
    .art-link-btn {
      background: #ffffff;
      border: 1px solid #ffd0ce;
      color: #444;
      padding: 6px 14px;
      font-size: 13px;
      border-radius: 4px;
      transition: all 0.2s;
    }
    .art-link-btn:hover {
      background: #ffebee;
      color: var(--primary-red);
      border-color: var(--primary-red);
    }

    /* Footer */
    footer.site-footer {
      background: #2b1110;
      color: #f1dedd;
      padding: 50px 0 25px;
      font-size: 13.5px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 30px;
      margin-bottom: 35px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 15px;
      margin-bottom: 16px;
      font-weight: 700;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 8px;
    }
    .footer-col ul li a {
      color: #e2bebd;
    }
    .footer-col ul li a:hover {
      color: #ffffff;
    }
    .footer-qr-wrap {
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 8px;
    }
    .footer-qr-wrap img {
      width: 100px;
      height: 100px;
      background: #fff;
      padding: 4px;
      border-radius: 6px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      color: #bfa5a4;
      font-size: 12.5px;
    }
    .friendly-links {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
    }
    .friendly-links a {
      color: #e2bebd;
    }
    .friendly-links a:hover {
      color: #fff;
    }

    /* Floating Widget */
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      background: #d32f2f;
      color: #fff;
      border-radius: 50px;
      padding: 10px 18px;
      box-shadow: 0 6px 20px rgba(211, 47, 47, 0.4);
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13.5px;
      font-weight: 600;
      z-index: 999;
      cursor: pointer;
      transition: transform 0.2s;
    }
    .floating-kefu:hover {
      transform: scale(1.05);
    }
    .floating-popup {
      position: fixed;
      right: 20px;
      bottom: 85px;
      background: #fff;
      padding: 16px;
      border-radius: 10px;
      border: 1px solid #ffdcd9;
      box-shadow: 0 10px 30px rgba(0,0,0,0.15);
      display: none;
      flex-direction: column;
      align-items: center;
      z-index: 1000;
      width: 180px;
      text-align: center;
    }
    .floating-popup img {
      width: 130px;
      height: 130px;
      margin-bottom: 8px;
    }
    .floating-popup span {
      font-size: 12px;
      color: #333;
      font-weight: 600;
    }

    /* Mobile toggle */
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: #333;
      cursor: pointer;
    }

    /* Responsive */
    @media (max-width: 992px) {
      .grid-4, .steps-wrap {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-metrics {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 16px;
      }
      .metric-item:nth-child(2) {
        border-right: none;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .mobile-menu-btn {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        padding: 15px 0;
        border-bottom: 1px solid #f8d7da;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        display: block;
        padding: 10px 0;
      }
      .hero-title {
        font-size: 26px;
      }
      .grid-3, .grid-2, .steps-wrap, .grid-4 {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }