:root {
      --primary: #FFB800;
      --primary-hover: #E5A500;
      --primary-light: #FFF8E1;
      --accent-yellow: #FFD400;
      --accent-glow: rgba(255, 184, 0, 0.28);
      --dark-title: #141416;
      --dark-body: #33363F;
      --dark-muted: #686D76;
      --bg-page: #FBFBFA;
      --bg-white: #FFFFFF;
      --bg-card: #FFFFFF;
      --border-light: #ECECEB;
      --border-yellow: #FFE082;
      --shadow-sm: 0 4px 12px rgba(20, 20, 22, 0.04);
      --shadow-md: 0 8px 24px rgba(255, 184, 0, 0.12);
      --shadow-lg: 0 16px 36px rgba(20, 20, 22, 0.08);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: var(--font-stack);
      background-color: var(--bg-page);
      color: var(--dark-body);
      line-height: 1.68;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

    ul, ol {
      list-style: none;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .nav-brand {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .logo-container {
      max-width: 160px;
      display: flex;
      align-items: center;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }

    .nav-links li {
      display: inline-block;
    }

    .nav-links a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--dark-body);
      border-radius: var(--radius-sm);
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--dark-title);
      background: var(--primary-light);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      padding: 10px 22px;
      font-size: 15px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .btn-primary {
      background-color: var(--primary);
      color: var(--dark-title);
      box-shadow: 0 4px 12px var(--accent-glow);
    }

    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(255, 184, 0, 0.35);
    }

    .btn-outline {
      background: transparent;
      border-color: var(--dark-title);
      color: var(--dark-title);
    }

    .btn-outline:hover {
      background: var(--dark-title);
      color: #FFF;
    }

    .btn-white {
      background: #FFF;
      color: var(--dark-title);
      border: 1px solid var(--border-light);
    }

    .btn-white:hover {
      background: var(--primary-light);
      border-color: var(--primary);
    }

    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .mobile-menu-toggle span {
      display: block;
      width: 24px;
      height: 2.5px;
      background: var(--dark-title);
      margin: 5px 0;
      transition: 0.3s;
    }

    .hero-section {
      padding: 70px 0 60px;
      background: radial-gradient(circle at 50% 10%, #FFFDF5 0%, #FAF8F0 100%);
      border-bottom: 1px solid var(--border-light);
      position: relative;
    }

    .hero-content {
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }

    .hero-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: #FFF;
      border: 1px solid var(--border-yellow);
      padding: 6px 16px;
      border-radius: 999px;
      font-size: 14px;
      font-weight: 600;
      color: var(--dark-title);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-tag::before {
      content: "";
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
    }

    .hero-title {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 800;
      color: var(--dark-title);
      margin-bottom: 20px;
      letter-spacing: -0.02em;
    }

    .hero-title span {
      background: linear-gradient(180deg, transparent 65%, #FFE082 65%);
      padding: 0 4px;
      display: inline-block;
    }

    .hero-desc {
      font-size: 1.15rem;
      color: var(--dark-body);
      max-width: 780px;
      margin: 0 auto 36px;
    }

    .hero-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }

    .hero-actions .btn {
      padding: 14px 34px;
      font-size: 17px;
      border-radius: var(--radius-md);
    }

    .model-badge-ticker {
      background: #FFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 18px 24px;
      box-shadow: var(--shadow-sm);
    }

    .model-badge-ticker p {
      font-size: 13px;
      font-weight: 600;
      text-transform: uppercase;
      color: var(--dark-muted);
      margin-bottom: 12px;
      letter-spacing: 0.05em;
    }

    .model-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 8px;
    }

    .model-pill {
      font-size: 12px;
      font-weight: 600;
      padding: 4px 10px;
      background: #F4F4F3;
      color: var(--dark-body);
      border-radius: 6px;
      transition: all 0.2s;
    }

    .model-pill:hover {
      background: var(--primary-light);
      color: var(--dark-title);
      border-color: var(--primary);
    }

    .metrics-bar {
      margin-top: 36px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .metric-card {
      background: #FFF;
      border: 1px solid var(--border-light);
      padding: 24px 20px;
      border-radius: var(--radius-md);
      text-align: center;
      transition: transform 0.25s, box-shadow 0.25s;
    }

    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-yellow);
    }

    .metric-num {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--dark-title);
      line-height: 1.1;
      margin-bottom: 6px;
    }

    .metric-num em {
      font-style: normal;
      color: var(--primary);
      font-size: 1.5rem;
      margin-left: 2px;
    }

    .metric-label {
      font-size: 14px;
      color: var(--dark-muted);
      font-weight: 500;
    }

    section {
      padding: 80px 0;
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 52px;
    }

    .section-eyebrow {
      display: inline-block;
      font-size: 13px;
      font-weight: 700;
      color: #996F00;
      background: var(--primary-light);
      padding: 4px 12px;
      border-radius: 4px;
      margin-bottom: 12px;
      letter-spacing: 0.06em;
      text-transform: uppercase;
    }

    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--dark-title);
      margin-bottom: 14px;
      line-height: 1.3;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--dark-muted);
    }

    .grid-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
      align-items: center;
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 30px;
      transition: all 0.28s ease;
      position: relative;
      display: flex;
      flex-direction: column;
    }

    .card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--border-yellow);
    }

    .card-icon-box {
      width: 52px;
      height: 52px;
      background: var(--primary-light);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 20px;
      color: var(--dark-title);
      border: 1px solid var(--border-yellow);
    }

    .card-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--dark-title);
      margin-bottom: 12px;
    }

    .card-text {
      font-size: 14.5px;
      color: var(--dark-body);
      line-height: 1.6;
      flex-grow: 1;
    }

    .about-image-stack {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .about-image-item {
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      background: #FFF;
    }

    .about-image-item img {
      width: 100%;
      height: 230px;
      object-fit: cover;
      transition: transform 0.3s;
    }

    .about-image-item:hover img {
      transform: scale(1.03);
    }

    .feature-list {
      margin: 24px 0 30px;
    }

    .feature-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      margin-bottom: 14px;
      font-size: 15px;
      color: var(--dark-body);
    }

    .feature-list li strong {
      color: var(--dark-title);
    }

    .feature-bullet {
      width: 18px;
      height: 18px;
      background: var(--primary);
      color: var(--dark-title);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 11px;
      font-weight: bold;
      margin-top: 3px;
      flex-shrink: 0;
    }

    .step-card {
      background: #FFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 26px;
      position: relative;
    }

    .step-badge {
      font-size: 13px;
      font-weight: 800;
      background: var(--primary);
      color: var(--dark-title);
      padding: 4px 10px;
      border-radius: 6px;
      display: inline-block;
      margin-bottom: 14px;
    }

    .review-card {
      background: #FFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .review-header {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 16px;
    }

    .review-avatar {
      width: 48px;
      height: 48px;
      background: #FFE082;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--dark-title);
      font-size: 16px;
    }

    .review-info h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--dark-title);
    }

    .review-info p {
      font-size: 13px;
      color: var(--dark-muted);
    }

    .review-stars {
      color: #FF9800;
      font-size: 14px;
      margin-bottom: 12px;
    }

    .review-content {
      font-size: 14.5px;
      color: var(--dark-body);
      font-style: normal;
      line-height: 1.65;
    }

    .eval-highlight-box {
      background: #FFF;
      border: 2px solid var(--primary);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
      margin-bottom: 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 30px;
    }

    .eval-score-wrap {
      display: flex;
      align-items: center;
      gap: 24px;
    }

    .score-circle {
      width: 105px;
      height: 105px;
      background: var(--primary-light);
      border: 3px solid var(--primary);
      border-radius: 50%;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }

    .score-big {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--dark-title);
      line-height: 1;
    }

    .score-scale {
      font-size: 12px;
      font-weight: 700;
      color: #996F00;
      margin-top: 2px;
    }

    .eval-intro h3 {
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--dark-title);
      margin-bottom: 6px;
    }

    .eval-stars-tag {
      font-size: 18px;
      color: #F57F17;
      margin-bottom: 8px;
    }

    .eval-table-container {
      background: #FFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow-x: auto;
      box-shadow: var(--shadow-sm);
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 14.5px;
    }

    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-light);
    }

    .eval-table th {
      background: #F9F9F8;
      font-weight: 700;
      color: var(--dark-title);
    }

    .eval-table td strong {
      color: var(--dark-title);
    }

    .eval-table tr.highlight-row {
      background-color: #FFFDF4;
    }

    .eval-table tr.highlight-row td {
      font-weight: 600;
      color: #8C6200;
    }

    .faq-container {
      max-width: 920px;
      margin: 0 auto;
    }

    .faq-item {
      background: #FFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color 0.2s;
    }

    .faq-item:hover {
      border-color: var(--border-yellow);
    }

    .faq-question {
      width: 100%;
      text-align: left;
      padding: 18px 22px;
      font-size: 16px;
      font-weight: 700;
      color: var(--dark-title);
      background: none;
      border: none;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }

    .faq-icon {
      font-size: 20px;
      font-weight: bold;
      color: var(--primary);
      transition: transform 0.25s;
    }

    .faq-answer {
      display: none;
      padding: 0 22px 20px 22px;
      font-size: 14.5px;
      color: var(--dark-body);
      line-height: 1.7;
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }

    .form-panel {
      background: #FFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: var(--shadow-sm);
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-label {
      display: block;
      font-size: 14.5px;
      font-weight: 600;
      color: var(--dark-title);
      margin-bottom: 8px;
    }

    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 16px;
      font-size: 15px;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      background: #FAFAFA;
      color: var(--dark-title);
      font-family: inherit;
      outline: none;
      transition: border-color 0.2s, box-shadow 0.2s;
    }

    .form-input:focus, .form-select:focus, .form-textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px var(--accent-glow);
      background: #FFF;
    }

    .form-textarea {
      resize: vertical;
      min-height: 110px;
    }

    .contact-info-card {
      background: #FFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 36px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .qr-block {
      text-align: center;
      padding: 20px;
      background: #FAFAFA;
      border-radius: var(--radius-md);
      border: 1px dashed var(--border-yellow);
      margin-bottom: 24px;
    }

    .qr-img-wrapper {
      max-width: 140px;
      margin: 0 auto 12px;
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid var(--border-light);
    }

    .info-list li {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 10px 0;
      border-bottom: 1px solid #F5F5F5;
      font-size: 14.5px;
    }

    .info-list li strong {
      color: var(--dark-title);
      min-width: 80px;
    }

    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }

    .article-item {
      background: #FFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 22px;
      transition: all 0.25s;
    }

    .article-item:hover {
      border-color: var(--border-yellow);
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
    }

    .article-tag {
      font-size: 12px;
      font-weight: 700;
      color: #996F00;
      background: var(--primary-light);
      padding: 3px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 10px;
    }

    .article-title {
      font-size: 16px;
      font-weight: 700;
      color: var(--dark-title);
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .article-link {
      font-size: 13.5px;
      font-weight: 600;
      color: #996F00;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      margin-top: 10px;
    }

    .article-link:hover {
      text-decoration: underline;
    }

    .shortcode-wrapper {
      background: #FFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 20px;
      margin-bottom: 24px;
    }

    .site-footer {
      background: #18191B;
      color: #B5B8C0;
      padding: 60px 0 24px;
      border-top: 3px solid var(--primary);
    }

    .footer-content {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      color: #FFF;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 18px;
      position: relative;
    }

    .footer-col h4::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: -6px;
      width: 24px;
      height: 2px;
      background: var(--primary);
    }

    .footer-col p {
      font-size: 14px;
      line-height: 1.65;
      margin-bottom: 14px;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a {
      font-size: 14px;
      color: #B5B8C0;
    }

    .footer-links a:hover {
      color: var(--primary);
      padding-left: 4px;
    }

    .friendly-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }

    .friendly-links a {
      background: #242629;
      color: #CFD3DC;
      padding: 6px 12px;
      border-radius: 4px;
      font-size: 13px;
      border: 1px solid #33363B;
    }

    .friendly-links a:hover {
      background: var(--primary);
      color: var(--dark-title);
      border-color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid #282A2E;
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 13px;
      color: #888C95;
      flex-wrap: wrap;
      gap: 16px;
    }

    .float-widgets {
      position: fixed;
      right: 20px;
      bottom: 40px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #FFF;
      border: 1px solid var(--border-light);
      box-shadow: 0 4px 14px rgba(0,0,0,0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      cursor: pointer;
      color: var(--dark-title);
      transition: all 0.25s;
    }

    .float-btn:hover {
      background: var(--primary);
      transform: scale(1.08);
    }

    .back-to-top {
      display: none;
    }

    @media (max-width: 1024px) {
      .grid-4 {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-content {
        grid-template-columns: 1fr 1fr;
      }
      .metrics-bar {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #FFF;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 24px;
        border-bottom: 1px solid var(--border-light);
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links a {
        width: 100%;
        padding: 12px 0;
        border-bottom: 1px solid #F5F5F5;
      }
      .hero-title {
        font-size: 2rem;
      }
      .grid-2, .grid-3 {
        grid-template-columns: 1fr;
      }
      .eval-highlight-box {
        flex-direction: column;
        text-align: center;
      }
      .eval-score-wrap {
        flex-direction: column;
      }
      .footer-content {
        grid-template-columns: 1fr;
      }
      .articles-grid {
        grid-template-columns: 1fr;
      }
    }