:root {
      --primary: #4F46E5;
      --primary-dark: #3730A3;
      --secondary: #EC4899;
      --accent: #F59E0B;
      --green: #10B981;
      --blue: #06B6D4;
      --text-main: #1F2937;
      --text-muted: #4B5563;
      --bg-page: #FFFDF9;
      --bg-card: #FFFFFF;
      --border-dark: #1E293B;
      --shadow-solid: 4px 4px 0px #1E293B;
      --shadow-hover: 6px 6px 0px #1E293B;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-page);
      background-image: 
        radial-gradient(#E2E8F0 1.2px, transparent 1.2px),
        radial-gradient(#FBCFE8 1.2px, transparent 1.2px);
      background-size: 28px 28px;
      background-position: 0 0, 14px 14px;
      color: var(--text-main);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    .main-container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    .header-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background-color: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      border-bottom: 3px solid var(--border-dark);
      padding: 12px 0;
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-wrap img {
      max-height: 40px;
      width: auto;
      display: block;
    }
    .brand-title {
      font-weight: 900;
      font-size: 1.25rem;
      letter-spacing: -0.5px;
      color: var(--border-dark);
      background: #FEF08A;
      padding: 2px 8px;
      border: 2px solid var(--border-dark);
      border-radius: 6px;
      box-shadow: 2px 2px 0px var(--border-dark);
    }
    .nav-links {
      display: flex;
      gap: 0;
      align-items: center;
      list-style: none;
    }
    .nav-links a {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text-main);
      padding: 6px 12px;
      border-radius: var(--radius-sm);
      transition: all 0.2s ease;
      display: inline-block;
    }
    .nav-links a:hover {
      background-color: #FEE2E2;
      color: #DC2626;
      transform: translateY(-2px);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .btn-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 0.9rem;
      padding: 8px 18px;
      border-radius: 10px;
      border: 2px solid var(--border-dark);
      box-shadow: 3px 3px 0px var(--border-dark);
      cursor: pointer;
      transition: all 0.15s ease;
    }
    .btn-badge:hover {
      transform: translate(-2px, -2px);
      box-shadow: 5px 5px 0px var(--border-dark);
    }
    .btn-badge:active {
      transform: translate(2px, 2px);
      box-shadow: 1px 1px 0px var(--border-dark);
    }
    .btn-primary {
      background-color: #FBBF24;
      color: #1E293B;
    }
    .btn-accent {
      background-color: #EC4899;
      color: #FFFFFF;
    }
    .btn-callout {
      background-color: #3B82F6;
      color: #FFFFFF;
      font-size: 1.05rem;
      padding: 12px 28px;
      border-radius: 12px;
      box-shadow: 4px 4px 0px var(--border-dark);
      font-weight: 900;
    }
    .mobile-menu-toggle {
      display: none;
      background: #FEF08A;
      border: 2px solid var(--border-dark);
      border-radius: 6px;
      padding: 6px 10px;
      font-weight: 900;
      cursor: pointer;
    }
    .section-wrap {
      padding: 60px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      margin-bottom: 40px;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.85rem;
      font-weight: 900;
      text-transform: uppercase;
      padding: 4px 14px;
      background-color: #C7D2FE;
      border: 2px solid var(--border-dark);
      border-radius: 20px;
      box-shadow: 2px 2px 0px var(--border-dark);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 900;
      color: var(--border-dark);
      position: relative;
      display: inline-block;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      margin-top: 10px;
      max-width: 680px;
      margin-left: auto;
      margin-right: auto;
    }
    .hero-section {
      padding: 70px 0 50px 0;
      text-align: center;
      position: relative;
    }
    .hero-pill-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: #FEF3C7;
      border: 2px solid var(--border-dark);
      box-shadow: 3px 3px 0px var(--border-dark);
      padding: 6px 18px;
      border-radius: 30px;
      font-size: 0.95rem;
      font-weight: 800;
      color: #92400E;
      margin-bottom: 24px;
      transform: rotate(-1deg);
    }
    .hero-title {
      font-size: 2.8rem;
      font-weight: 900;
      line-height: 1.25;
      color: var(--border-dark);
      max-width: 900px;
      margin: 0 auto 20px auto;
      letter-spacing: -0.5px;
    }
    .hero-highlight {
      background: linear-gradient(120deg, #FDE68A 0%, #FCA5A5 100%);
      padding: 2px 10px;
      border-radius: 8px;
      border: 2px dashed var(--border-dark);
      display: inline-block;
      margin-top: 6px;
    }
    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 760px;
      margin: 0 auto 32px auto;
      font-weight: 500;
    }
    .hero-cta-box {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 45px;
    }
    .stat-bar-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 20px;
    }
    .stat-card {
      background: #FFFFFF;
      border: 2px solid var(--border-dark);
      box-shadow: 4px 4px 0px var(--border-dark);
      padding: 20px 16px;
      border-radius: var(--radius-md);
      text-align: center;
      transition: transform 0.2s ease;
    }
    .stat-card:hover {
      transform: translateY(-4px);
    }
    .stat-card.c-yellow { background-color: #FEF9C3; }
    .stat-card.c-pink { background-color: #FCE7F3; }
    .stat-card.c-cyan { background-color: #CFFAFE; }
    .stat-card.c-green { background-color: #DCFCE7; }
    .stat-num {
      font-size: 2.1rem;
      font-weight: 900;
      color: var(--border-dark);
      display: block;
      margin-bottom: 4px;
    }
    .stat-label {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-muted);
    }
    .models-marquee-wrap {
      margin-top: 40px;
      padding: 16px;
      background: #F1F5F9;
      border: 2px dashed var(--border-dark);
      border-radius: var(--radius-md);
    }
    .models-label {
      font-weight: 900;
      font-size: 0.9rem;
      margin-bottom: 12px;
      color: var(--border-dark);
      text-transform: uppercase;
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      justify-content: center;
    }
    .model-chip {
      font-size: 0.85rem;
      font-weight: 800;
      padding: 4px 10px;
      background: #FFFFFF;
      border: 1.5px solid var(--border-dark);
      border-radius: 6px;
      box-shadow: 2px 2px 0px var(--border-dark);
      color: var(--border-dark);
    }
    .grid-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .card-item {
      background: #FFFFFF;
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-solid);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.2s ease;
      position: relative;
    }
    .card-item:hover {
      transform: translate(-3px, -3px);
      box-shadow: var(--shadow-hover);
    }
    .card-badge {
      position: absolute;
      top: -12px;
      right: 16px;
      font-size: 0.75rem;
      font-weight: 900;
      background: #FDE047;
      border: 2px solid var(--border-dark);
      padding: 2px 10px;
      border-radius: 12px;
    }
    .card-icon {
      width: 44px;
      height: 44px;
      background: #E0E7FF;
      border: 2px solid var(--border-dark);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 16px;
      box-shadow: 2px 2px 0px var(--border-dark);
    }
    .card-title {
      font-size: 1.25rem;
      font-weight: 900;
      color: var(--border-dark);
      margin-bottom: 10px;
    }
    .card-desc {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.55;
    }
    .table-container {
      background: #FFFFFF;
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-solid);
      overflow-x: auto;
      padding: 8px;
    }
    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }
    .eval-table th, .eval-table td {
      padding: 14px 18px;
      border-bottom: 2px solid #E2E8F0;
    }
    .eval-table th {
      background-color: #F8FAFC;
      font-weight: 900;
      color: var(--border-dark);
      border-bottom: 2.5px solid var(--border-dark);
    }
    .eval-table tr:last-child td {
      border-bottom: none;
    }
    .eval-badge {
      display: inline-block;
      padding: 2px 8px;
      font-weight: 800;
      border-radius: 4px;
      border: 1.5px solid var(--border-dark);
      font-size: 0.85rem;
    }
    .score-banner {
      background: #FEF08A;
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-solid);
      padding: 20px;
      margin-bottom: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
    }
    .score-details {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .score-number {
      font-size: 3rem;
      font-weight: 900;
      color: #92400E;
      line-height: 1;
    }
    .score-stars {
      color: #D97706;
      font-size: 1.4rem;
      font-weight: 900;
    }
    .media-card-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .media-card {
      background: #FFFFFF;
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-solid);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .media-img-holder {
      width: 100%;
      background: #F1F5F9;
      border-bottom: 2px solid var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .media-img-holder img {
      width: 100%;
      height: auto;
      object-fit: contain;
      display: block;
    }
    .media-body {
      padding: 20px;
    }
    .timeline-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }
    .step-box {
      background: #FFFFFF;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: 3px 3px 0px var(--border-dark);
      padding: 20px 16px;
      position: relative;
    }
    .step-num {
      width: 32px;
      height: 32px;
      background: #6366F1;
      color: #FFFFFF;
      font-weight: 900;
      border: 2px solid var(--border-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 12px;
      box-shadow: 2px 2px 0px var(--border-dark);
    }
    .faq-accordion {
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #FFFFFF;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: 3px 3px 0px var(--border-dark);
      overflow: hidden;
      transition: all 0.2s ease;
    }
    .faq-question {
      padding: 16px 20px;
      font-weight: 800;
      font-size: 1.05rem;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background-color: #FFFFFF;
      user-select: none;
    }
    .faq-question:hover {
      background-color: #F8FAFC;
    }
    .faq-answer {
      padding: 0 20px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      color: var(--text-muted);
      border-top: 1px dashed transparent;
      font-size: 0.95rem;
      line-height: 1.6;
    }
    .faq-item.active .faq-answer {
      padding: 14px 20px 18px 20px;
      max-height: 300px;
      border-top: 1px dashed #CBD5E1;
      background-color: #FAFAFA;
    }
    .faq-item.active .faq-arrow {
      transform: rotate(180deg);
    }
    .faq-arrow {
      transition: transform 0.2s ease;
      font-weight: 900;
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .review-card {
      background: #FFFFFF;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: 3px 3px 0px var(--border-dark);
      padding: 20px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-header {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 12px;
    }
    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      border: 2px solid var(--border-dark);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 1.1rem;
    }
    .review-user-name {
      font-weight: 800;
      font-size: 1rem;
      color: var(--border-dark);
    }
    .review-user-role {
      font-size: 0.8rem;
      font-weight: 600;
      color: #64748B;
    }
    .review-text {
      font-size: 0.95rem;
      color: var(--text-main);
      font-style: italic;
      line-height: 1.5;
    }
    .form-wrapper {
      background: #FFFFFF;
      border: 2.5px solid var(--border-dark);
      border-radius: var(--radius-lg);
      box-shadow: 6px 6px 0px var(--border-dark);
      padding: 36px;
      max-width: 800px;
      margin: 0 auto;
    }
    .contact-form-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-bottom: 20px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group.full-width {
      grid-column: span 2;
    }
    .form-label {
      font-weight: 800;
      font-size: 0.9rem;
      color: var(--border-dark);
    }
    .form-input, .form-select, .form-textarea {
      width: 100%;
      padding: 12px 14px;
      border: 2px solid var(--border-dark);
      border-radius: 8px;
      font-size: 0.95rem;
      background: #F8FAFC;
      box-shadow: 2px 2px 0px #E2E8F0;
      outline: none;
      font-family: inherit;
    }
    .form-input:focus, .form-select:focus, .form-textarea:focus {
      background: #FFFFFF;
      border-color: var(--primary);
    }
    .form-textarea {
      min-height: 110px;
      resize: vertical;
    }
    .articles-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .article-card {
      background: #FFFFFF;
      border: 2px solid var(--border-dark);
      border-radius: var(--radius-md);
      box-shadow: 3px 3px 0px var(--border-dark);
      padding: 20px;
      transition: all 0.2s ease;
    }
    .article-card:hover {
      transform: translateY(-3px);
      box-shadow: 5px 5px 0px var(--border-dark);
    }
    .article-tag {
      font-size: 0.75rem;
      font-weight: 800;
      background: #E0E7FF;
      border: 1px solid var(--border-dark);
      padding: 2px 8px;
      border-radius: 4px;
      display: inline-block;
      margin-bottom: 10px;
    }
    .article-link {
      font-weight: 800;
      font-size: 1.05rem;
      color: var(--border-dark);
      display: block;
      margin-bottom: 8px;
    }
    .article-link:hover {
      color: var(--primary);
      text-decoration: underline;
    }
    .site-footer {
      background-color: #FFFFFF;
      border-top: 3px solid var(--border-dark);
      padding: 48px 0 24px 0;
      margin-top: 60px;
      color: var(--border-dark);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 32px;
      margin-bottom: 36px;
    }
    .footer-col-title {
      font-weight: 900;
      font-size: 1.05rem;
      margin-bottom: 16px;
      color: var(--border-dark);
    }
    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links-list a {
      color: var(--text-muted);
      font-size: 0.9rem;
      font-weight: 600;
    }
    .footer-links-list a:hover {
      color: var(--primary);
      text-decoration: underline;
    }
    .qr-box {
      display: inline-block;
      border: 2px solid var(--border-dark);
      padding: 6px;
      background: #FFFFFF;
      border-radius: 8px;
      box-shadow: 3px 3px 0px var(--border-dark);
      max-width: 130px;
    }
    .qr-box img {
      width: 100%;
      height: auto;
      display: block;
    }
    .friend-links-box {
      border-top: 2px dashed #CBD5E1;
      padding-top: 20px;
      margin-bottom: 24px;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }
    .friend-links-label {
      font-weight: 900;
      font-size: 0.9rem;
    }
    .friend-links-box a {
      font-size: 0.85rem;
      font-weight: 700;
      background: #F1F5F9;
      border: 1px solid var(--border-dark);
      padding: 3px 10px;
      border-radius: 6px;
      color: var(--text-main);
    }
    .friend-links-box a:hover {
      background: #FEF08A;
    }
    .copyright-bar {
      text-align: center;
      font-size: 0.85rem;
      color: var(--text-muted);
      border-top: 1px solid #E2E8F0;
      padding-top: 20px;
      font-weight: 600;
    }
    .floating-tool-bar {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .floating-btn {
      width: 48px;
      height: 48px;
      background: #FFFFFF;
      border: 2px solid var(--border-dark);
      box-shadow: 3px 3px 0px var(--border-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      font-size: 1.1rem;
      cursor: pointer;
      transition: all 0.2s ease;
      color: var(--border-dark);
    }
    .floating-btn:hover {
      transform: scale(1.1);
      background: #FEF08A;
    }
    @media (max-width: 992px) {
      .grid-cards, .reviews-grid, .articles-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .stat-bar-grid, .timeline-steps {
        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;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #FFFFFF;
        border-bottom: 3px solid var(--border-dark);
        padding: 16px;
        box-shadow: 0 10px 15px rgba(0,0,0,0.1);
      }
      .nav-links.active {
        display: flex;
      }
      .grid-cards, .media-card-grid, .reviews-grid, .articles-grid, .stat-bar-grid, .timeline-steps {
        grid-template-columns: 1fr;
      }
      .contact-form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-title {
        font-size: 1.8rem;
      }
      .score-banner {
        flex-direction: column;
        align-items: flex-start;
      }
    }