:root {
      --primary-orange: #ff5e14;
      --primary-gradient: linear-gradient(135deg, #ff7a18 0%, #ff4b1f 100%);
      --accent-warm: #fff2eb;
      --accent-border: #ffd5c2;
      --dark-text: #1f242d;
      --body-text: #4a5160;
      --muted-text: #737c8c;
      --bg-light: #fafafc;
      --white: #ffffff;
      --card-shadow: 0 10px 30px rgba(255, 94, 20, 0.08);
      --card-hover: 0 16px 36px rgba(255, 94, 20, 0.16);
      --transition: all 0.28s ease;
      --container-width: 1200px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-tap-highlight-color: transparent;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-light);
      color: var(--body-text);
      line-height: 1.65;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    ul, ol {
      list-style: none;
    }
    .site-container {
      width: 100%;
      max-width: var(--container-width);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 122, 24, 0.15);
      box-shadow: 0 2px 15px rgba(0,0,0,0.03);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .brand-box img {
      max-height: 42px;
      width: auto;
      display: block;
    }
    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--dark-text);
      letter-spacing: -0.5px;
    }
    .brand-title span {
      color: var(--primary-orange);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }
    .nav-links a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--dark-text);
      padding: 8px 14px;
      border-radius: 6px;
    }
    .nav-links a:hover {
      color: var(--primary-orange);
      background: var(--accent-warm);
    }
    .nav-btn-group {
      display: flex;
      align-items: center;
      gap: 12px;
      flex-shrink: 0;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 600;
      border-radius: 8px;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      text-align: center;
    }
    .btn-primary {
      background: var(--primary-gradient);
      color: var(--white);
      box-shadow: 0 4px 14px rgba(255, 75, 31, 0.35);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(255, 75, 31, 0.45);
      color: var(--white);
    }
    .btn-outline {
      background: var(--white);
      color: var(--primary-orange);
      border-color: var(--primary-orange);
    }
    .btn-outline:hover {
      background: var(--accent-warm);
      transform: translateY(-2px);
    }
    .btn-large {
      padding: 14px 34px;
      font-size: 1.1rem;
      border-radius: 10px;
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.6rem;
      color: var(--dark-text);
      cursor: pointer;
      padding: 4px;
    }
    .hero-section {
      background: radial-gradient(circle at 80% 20%, #ffece0 0%, #ffffff 70%), #fafafc;
      padding: 70px 0 80px;
      position: relative;
      border-bottom: 1px solid #f0e6e0;
    }
    .hero-content {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }
    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #fff4ee;
      border: 1px solid #ffd2be;
      border-radius: 50px;
      color: var(--primary-orange);
      font-size: 0.9rem;
      font-weight: 600;
      margin-bottom: 24px;
    }
    .hero-title {
      font-size: 2.8rem;
      line-height: 1.25;
      font-weight: 900;
      color: var(--dark-text);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-title em {
      font-style: normal;
      color: var(--primary-orange);
      position: relative;
    }
    .hero-desc {
      font-size: 1.2rem;
      color: var(--body-text);
      margin-bottom: 34px;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 45px;
    }
    .stat-pill-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: var(--white);
      padding: 24px 30px;
      border-radius: 16px;
      box-shadow: var(--card-shadow);
      border: 1px solid var(--accent-border);
      text-align: center;
    }
    .stat-item h3 {
      font-size: 1.8rem;
      color: var(--primary-orange);
      font-weight: 800;
      margin-bottom: 4px;
    }
    .stat-item p {
      font-size: 0.9rem;
      color: var(--muted-text);
    }
    .section {
      padding: 90px 0;
      position: relative;
    }
    .section-alt {
      background-color: #fff9f6;
      border-top: 1px solid #fde4d8;
      border-bottom: 1px solid #fde4d8;
    }
    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 55px;
    }
    .section-subtitle {
      font-size: 0.9rem;
      text-transform: uppercase;
      letter-spacing: 2px;
      font-weight: 700;
      color: var(--primary-orange);
      margin-bottom: 10px;
      display: block;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--dark-text);
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--muted-text);
      line-height: 1.7;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }
    .card {
      background: var(--white);
      border-radius: 14px;
      padding: 28px;
      border: 1px solid #f2e9e4;
      box-shadow: 0 4px 16px rgba(0,0,0,0.03);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .card:hover {
      transform: translateY(-5px);
      box-shadow: var(--card-hover);
      border-color: var(--accent-border);
    }
    .card-badge {
      align-self: flex-start;
      padding: 4px 10px;
      background: var(--accent-warm);
      color: var(--primary-orange);
      font-size: 0.78rem;
      font-weight: 700;
      border-radius: 4px;
      margin-bottom: 14px;
    }
    .card h3 {
      font-size: 1.25rem;
      color: var(--dark-text);
      margin-bottom: 12px;
      font-weight: 700;
    }
    .card p {
      font-size: 0.95rem;
      color: var(--body-text);
      line-height: 1.6;
      flex-grow: 1;
    }
    .model-chip-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 30px;
    }
    .model-chip {
      background: var(--white);
      padding: 8px 18px;
      border-radius: 30px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--dark-text);
      border: 1px solid #ebd9d0;
      box-shadow: 0 2px 6px rgba(0,0,0,0.02);
      transition: var(--transition);
    }
    .model-chip:hover {
      background: var(--primary-orange);
      color: var(--white);
      border-color: var(--primary-orange);
      transform: scale(1.05);
    }
    .flow-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-box {
      background: var(--white);
      padding: 30px 24px;
      border-radius: 12px;
      border: 1px solid #f0e2da;
      text-align: center;
      position: relative;
    }
    .step-num {
      width: 42px;
      height: 42px;
      line-height: 42px;
      background: var(--primary-gradient);
      color: var(--white);
      font-weight: 800;
      border-radius: 50%;
      margin: 0 auto 16px;
      font-size: 1.1rem;
    }
    .step-box h4 {
      font-size: 1.15rem;
      margin-bottom: 8px;
      color: var(--dark-text);
    }
    .step-box p {
      font-size: 0.9rem;
      color: var(--muted-text);
    }
    .compare-container {
      background: var(--white);
      border-radius: 16px;
      border: 1px solid #edd5cb;
      overflow: hidden;
      box-shadow: var(--card-shadow);
    }
    .table-scroll {
      width: 100%;
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 680px;
    }
    .compare-table th, .compare-table td {
      padding: 18px 24px;
      border-bottom: 1px solid #f3e9e3;
    }
    .compare-table th {
      background: #fff7f2;
      color: var(--dark-text);
      font-weight: 700;
      font-size: 1rem;
    }
    .compare-table td {
      font-size: 0.95rem;
    }
    .highlight-col {
      background: rgba(255, 94, 20, 0.03);
      font-weight: 600;
      color: var(--primary-orange);
    }
    .score-badge {
      display: inline-block;
      background: var(--primary-orange);
      color: var(--white);
      padding: 4px 10px;
      border-radius: 6px;
      font-size: 0.85rem;
      font-weight: 700;
    }
    .media-card-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 30px;
      margin-top: 40px;
    }
    .media-card {
      background: var(--white);
      border-radius: 16px;
      overflow: hidden;
      border: 1px solid #f2dfd5;
      box-shadow: var(--card-shadow);
      transition: var(--transition);
    }
    .media-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--card-hover);
    }
    .media-img-wrap {
      width: 100%;
      aspect-ratio: 16 / 9;
      background: #fdf3ed;
      overflow: hidden;
    }
    .media-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }
    .media-info {
      padding: 24px;
    }
    .media-info h3 {
      font-size: 1.25rem;
      margin-bottom: 10px;
      color: var(--dark-text);
    }
    .media-info p {
      font-size: 0.95rem;
      color: var(--body-text);
      line-height: 1.6;
    }
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testimonial-card {
      background: var(--white);
      padding: 28px;
      border-radius: 14px;
      border: 1px solid #f1ded5;
      box-shadow: 0 4px 12px rgba(0,0,0,0.02);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .user-comment {
      font-size: 0.95rem;
      color: var(--dark-text);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }
    .user-comment::before {
      content: "“";
      font-size: 2.4rem;
      color: #ffbba1;
      position: absolute;
      left: -12px;
      top: -20px;
      opacity: 0.5;
    }
    .user-profile {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #faece6;
      padding-top: 14px;
    }
    .user-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-gradient);
      color: var(--white);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }
    .user-meta h4 {
      font-size: 0.95rem;
      color: var(--dark-text);
      font-weight: 700;
    }
    .user-meta span {
      font-size: 0.8rem;
      color: var(--muted-text);
    }
    .faq-accordion {
      max-width: 920px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--white);
      border: 1px solid #eedad0;
      border-radius: 12px;
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-header {
      padding: 18px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      user-select: none;
      font-weight: 700;
      color: var(--dark-text);
      font-size: 1.05rem;
    }
    .faq-icon {
      font-size: 1.4rem;
      color: var(--primary-orange);
      transition: var(--transition);
    }
    .faq-body {
      display: none;
      padding: 0 24px 20px;
      color: var(--body-text);
      font-size: 0.95rem;
      line-height: 1.7;
      border-top: 1px dashed #f5e4dc;
      padding-top: 14px;
    }
    .faq-item.active {
      border-color: var(--primary-orange);
      box-shadow: 0 4px 16px rgba(255, 94, 20, 0.08);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-item.active .faq-body {
      display: block;
    }
    .form-wrapper {
      background: var(--white);
      border-radius: 16px;
      padding: 40px;
      border: 1px solid #ffd8c7;
      box-shadow: var(--card-shadow);
      max-width: 800px;
      margin: 0 auto;
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      font-weight: 600;
      color: var(--dark-text);
      margin-bottom: 8px;
      font-size: 0.95rem;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 1px solid #e1d3cc;
      border-radius: 8px;
      outline: none;
      transition: var(--transition);
      background-color: #faf7f5;
    }
    .form-control:focus {
      border-color: var(--primary-orange);
      background-color: var(--white);
      box-shadow: 0 0 0 3px rgba(255, 94, 20, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }
    .site-footer {
      background-color: #1a1c21;
      color: #b0b6c2;
      padding: 70px 0 25px;
      border-top: 3px solid var(--primary-orange);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-brand h4 {
      color: var(--white);
      font-size: 1.3rem;
      margin-bottom: 14px;
      font-weight: 800;
    }
    .footer-brand p {
      font-size: 0.9rem;
      line-height: 1.7;
      margin-bottom: 16px;
      color: #939aa7;
    }
    .footer-heading {
      color: var(--white);
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 20px;
      position: relative;
      padding-bottom: 8px;
    }
    .footer-heading::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 28px;
      height: 2px;
      background: var(--primary-orange);
    }
    .footer-list li {
      margin-bottom: 10px;
    }
    .footer-list a {
      color: #9ba3b2;
      font-size: 0.9rem;
    }
    .footer-list a:hover {
      color: var(--primary-orange);
      padding-left: 4px;
    }
    .qr-box {
      display: flex;
      align-items: center;
      gap: 15px;
      margin-top: 15px;
    }
    .qr-box img {
      width: 95px;
      height: 95px;
      border-radius: 8px;
      background: var(--white);
      padding: 4px;
    }
    .qr-desc {
      font-size: 0.85rem;
      line-height: 1.5;
      color: #a4abb8;
    }
    .footer-links-section {
      border-top: 1px solid #2d313a;
      padding: 24px 0;
      font-size: 0.85rem;
    }
    .footer-links-title {
      font-weight: 700;
      color: #cfd5e1;
      margin-bottom: 10px;
    }
    .footer-links-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
    }
    .footer-links-cloud a {
      color: #8c93a3;
    }
    .footer-links-cloud a:hover {
      color: var(--primary-orange);
    }
    .footer-bottom {
      border-top: 1px solid #282c35;
      padding-top: 25px;
      text-align: center;
      font-size: 0.85rem;
      color: #727a89;
    }
    .floating-tool {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      background: var(--white);
      box-shadow: 0 4px 16px rgba(0,0,0,0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-orange);
      font-weight: 700;
      cursor: pointer;
      border: 1px solid #f6ded5;
      transition: var(--transition);
    }
    .float-btn:hover {
      background: var(--primary-orange);
      color: var(--white);
      transform: scale(1.08);
    }
    .float-qr-modal {
      display: none;
      position: absolute;
      right: 65px;
      bottom: 0;
      background: var(--white);
      padding: 12px;
      border-radius: 10px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.18);
      border: 1px solid #ffd8c7;
      text-align: center;
      width: 140px;
    }
    .float-qr-modal img {
      width: 100%;
      height: auto;
      border-radius: 6px;
    }
    .float-qr-modal span {
      display: block;
      font-size: 0.78rem;
      color: var(--dark-text);
      margin-top: 6px;
    }
    @media (max-width: 992px) {
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .stat-pill-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero-title {
        font-size: 2.2rem;
      }
    }
    @media (max-width: 768px) {
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.06);
        border-bottom: 1px solid #f3e5dd;
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links a {
        width: 100%;
        text-align: center;
        padding: 12px;
      }
      .grid-4, .grid-3, .testimonials-grid, .media-card-grid {
        grid-template-columns: 1fr;
      }
      .stat-pill-grid, .flow-steps-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 1.85rem;
      }
      .hero-desc {
        font-size: 1rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .form-wrapper {
        padding: 24px;
      }
      .nav-btn-group .btn-outline {
        display: none;
      }
    }