:root {
      --primary: #4f46e5;
      --primary-hover: #4338ca;
      --accent-cyan: #06b6d4;
      --accent-pink: #ec4899;
      --accent-amber: #f59e0b;
      --bg-main: #f8fafc;
      --bg-card: #ffffff;
      --text-main: #0f172a;
      --text-muted: #475569;
      --text-light: #64748b;
      --border-color: rgba(226, 232, 240, 0.8);
      --border-hover: rgba(99, 102, 241, 0.4);
      --iridescent-gradient: linear-gradient(135deg, rgba(238, 242, 255, 0.95) 0%, rgba(240, 253, 250, 0.9) 35%, rgba(253, 242, 248, 0.9) 70%, rgba(245, 243, 255, 0.95) 100%);
      --iridescent-border: linear-gradient(90deg, #6366f1, #06b6d4, #ec4899, #8b5cf6);
      --shadow-sm: 0 2px 8px -2px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
      --shadow-lg: 0 20px 35px -10px rgba(99, 102, 241, 0.12), 0 1px 3px 0 rgba(0, 0, 0, 0.05);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    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-main);
      color: var(--text-main);
      line-height: 1.65;
      overflow-x: hidden;
      background-image: radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.08) 0px, transparent 50%), radial-gradient(at 100% 0%, rgba(6, 182, 212, 0.08) 0px, transparent 50%), radial-gradient(at 50% 50%, rgba(236, 72, 153, 0.04) 0px, transparent 50%);
      background-attachment: fixed;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      box-shadow: 0 4px 20px -2px rgba(0,0,0,0.03);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
    }
    .brand-text {
      display: flex;
      flex-direction: column;
    }
    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: #1e1b4b;
    }
    .brand-subtitle {
      font-size: 0.75rem;
      color: var(--text-light);
      font-weight: 500;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links a {
      font-size: 0.935rem;
      font-weight: 600;
      color: var(--text-muted);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      display: inline-block;
    }
    .nav-links a:hover {
      color: var(--primary);
      background: rgba(79, 70, 229, 0.05);
    }
    .nav-cta {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-hologram {
      position: relative;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 0.95rem;
      font-weight: 700;
      color: #ffffff;
      background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
      border: none;
      border-radius: var(--radius-full);
      box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
      cursor: pointer;
      transition: var(--transition);
    }
    .btn-hologram:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
      color: #ffffff;
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      background: #ffffff;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-full);
      cursor: pointer;
      transition: var(--transition);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(79, 70, 229, 0.04);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      padding: 6px 10px;
      font-size: 1.25rem;
      cursor: pointer;
      color: var(--text-main);
    }
    section {
      padding: 80px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      max-width: 800px;
      margin: 0 auto 52px auto;
    }
    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      font-size: 0.8125rem;
      font-weight: 700;
      letter-spacing: 0.05em;
      text-transform: uppercase;
      color: var(--primary);
      background: rgba(79, 70, 229, 0.1);
      border: 1px solid rgba(79, 70, 229, 0.2);
      border-radius: var(--radius-full);
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.02em;
      margin-bottom: 14px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .hero-section {
      padding: 90px 0 70px 0;
      background: var(--iridescent-gradient);
      border-bottom: 1px solid rgba(226, 232, 240, 0.8);
      position: relative;
      overflow: hidden;
    }
    .hero-section::before {
      content: "";
      position: absolute;
      top: -50%;
      left: -50%;
      width: 200%;
      height: 200%;
      background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, rgba(6, 182, 212, 0.05) 30%, transparent 70%);
      pointer-events: none;
      animation: rotateIridescent 20s linear infinite;
    }
    @keyframes rotateIridescent {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }
    .hero-wrapper {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 960px;
      margin: 0 auto;
    }
    .hero-badge-group {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid rgba(99, 102, 241, 0.3);
      border-radius: var(--radius-full);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }
    .hero-badge-tag {
      font-size: 0.75rem;
      font-weight: 700;
      background: linear-gradient(90deg, #4f46e5, #06b6d4);
      color: #fff;
      padding: 2px 8px;
      border-radius: 4px;
    }
    .hero-badge-txt {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-muted);
    }
    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 900;
      line-height: 1.25;
      color: #0f172a;
      letter-spacing: -0.03em;
      margin-bottom: 20px;
    }
    .hero-subtitle {
      font-size: 1.2rem;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto 36px auto;
      line-height: 1.7;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }
    .hero-btn-primary {
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff;
      background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
      border-radius: var(--radius-full);
      box-shadow: 0 6px 20px rgba(79, 70, 229, 0.35);
      border: none;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      transition: var(--transition);
    }
    .hero-btn-primary:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 10px 25px rgba(6, 182, 212, 0.45);
      color: #fff;
    }
    .hero-btn-secondary {
      padding: 13px 30px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--text-main);
      background: rgba(255, 255, 255, 0.95);
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-full);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .hero-btn-secondary:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #ffffff;
      transform: translateY(-2px);
    }
    .hero-stats-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: rgba(255, 255, 255, 0.85);
      border: 1px solid rgba(226, 232, 240, 0.9);
      padding: 24px 28px;
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      backdrop-filter: blur(12px);
    }
    .stat-item {
      text-align: center;
    }
    .stat-val {
      font-size: 1.85rem;
      font-weight: 800;
      color: var(--primary);
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    }
    .stat-lbl {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-light);
      margin-top: 4px;
    }
    .model-pills {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 36px;
    }
    .model-pill {
      font-size: 0.8125rem;
      font-weight: 600;
      padding: 5px 12px;
      background: rgba(255, 255, 255, 0.8);
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-full);
      color: var(--text-muted);
      transition: var(--transition);
    }
    .model-pill:hover {
      border-color: var(--accent-cyan);
      color: var(--primary);
      transform: translateY(-2px);
      background: #ffffff;
    }
    .card-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
      gap: 24px;
    }
    .holo-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .holo-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--iridescent-border);
      opacity: 0;
      transition: var(--transition);
    }
    .holo-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
      border-color: var(--border-hover);
    }
    .holo-card:hover::before {
      opacity: 1;
    }
    .card-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      font-weight: 800;
      margin-bottom: 18px;
    }
    .holo-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .holo-card p {
      font-size: 0.935rem;
      color: var(--text-muted);
      line-height: 1.65;
    }
    .card-tag-list {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-top: 16px;
    }
    .card-tag {
      font-size: 0.75rem;
      background: #f1f5f9;
      color: var(--text-light);
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: 500;
    }
    .table-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      overflow-x: auto;
      margin: 24px 0;
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
      min-width: 640px;
    }
    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f1f5f9;
    }
    .custom-table th {
      background: #f8fafc;
      color: var(--text-main);
      font-weight: 700;
      font-size: 0.9rem;
      text-transform: uppercase;
      letter-spacing: 0.03em;
    }
    .custom-table tbody tr:hover {
      background: rgba(248, 250, 252, 0.7);
    }
    .custom-table .highlight-cell {
      color: var(--primary);
      font-weight: 700;
    }
    .badge-success {
      background: #dcfce7;
      color: #15803d;
      padding: 3px 8px;
      border-radius: 4px;
      font-size: 0.75rem;
      font-weight: 700;
    }
    .eval-highlight-box {
      background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
      border: 1px solid rgba(99, 102, 241, 0.2);
      border-radius: var(--radius-lg);
      padding: 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 24px;
      margin-bottom: 36px;
    }
    .eval-score-num {
      font-size: 3.5rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
      font-family: ui-monospace, SFMono-Regular, monospace;
    }
    .eval-stars {
      color: #f59e0b;
      font-size: 1.5rem;
      margin-top: 6px;
    }
    .workflow-steps {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      position: relative;
    }
    .step-number {
      font-size: 1.5rem;
      font-weight: 900;
      color: rgba(79, 70, 229, 0.2);
      margin-bottom: 8px;
    }
    .step-card h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .step-card p {
      font-size: 0.875rem;
      color: var(--text-muted);
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-user {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .user-avatar-initial {
      width: 44px;
      height: 44px;
      border-radius: var(--radius-full);
      background: linear-gradient(135deg, #4f46e5, #06b6d4);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1.1rem;
    }
    .user-info h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .user-info span {
      font-size: 0.8rem;
      color: var(--text-light);
    }
    .review-text {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
      font-style: italic;
    }
    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item.active {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 18px 22px;
      font-size: 1.025rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
    }
    .faq-toggle-icon {
      font-size: 1.25rem;
      color: var(--text-light);
      transition: transform 0.3s ease;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(180deg);
      color: var(--primary);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease-out;
      background: #fafafa;
    }
    .faq-answer-inner {
      padding: 0 22px 18px 22px;
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .media-gallery-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 20px;
    }
    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .media-wrapper {
      width: 100%;
      position: relative;
      background: #e2e8f0;
    }
    .media-wrapper img {
      width: 100%;
      height: auto;
      display: block;
      object-fit: cover;
    }
    .media-info {
      padding: 16px;
    }
    .media-info h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .media-info p {
      font-size: 0.85rem;
      color: var(--text-light);
    }
    .articles-container {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 28px;
      box-shadow: var(--shadow-sm);
    }
    .article-links-list {
      list-style: none;
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 16px;
      margin-top: 18px;
    }
    .article-links-list a {
      display: block;
      padding: 12px 16px;
      background: #f8fafc;
      border: 1px solid #e2e8f0;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      transition: var(--transition);
    }
    .article-links-list a:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #ffffff;
      transform: translateX(4px);
    }
    .form-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
      max-width: 720px;
      margin: 0 auto;
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 1px solid #cbd5e1;
      border-radius: var(--radius-sm);
      outline: none;
      background: #f8fafc;
      color: var(--text-main);
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--primary);
      background: #ffffff;
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }
    .form-submit-btn {
      width: 100%;
      padding: 14px;
      font-size: 1.05rem;
      font-weight: 700;
      color: #fff;
      background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
      transition: var(--transition);
    }
    .form-submit-btn:hover {
      box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
      transform: translateY(-2px);
    }
    footer.site-footer {
      background: #0f172a;
      color: #cbd5e1;
      padding: 64px 0 32px 0;
      border-top: 1px solid #1e293b;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 36px;
      margin-bottom: 48px;
    }
    .footer-col h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 18px;
    }
    .footer-col p {
      font-size: 0.9rem;
      color: #94a3b8;
      line-height: 1.65;
      margin-bottom: 12px;
    }
    .footer-col ul {
      list-style: none;
    }
    .footer-col ul li {
      margin-bottom: 8px;
    }
    .footer-col ul li a {
      color: #94a3b8;
      font-size: 0.9rem;
    }
    .footer-col ul li a:hover {
      color: #ffffff;
    }
    .qr-box {
      background: #ffffff;
      padding: 10px;
      border-radius: var(--radius-sm);
      display: inline-block;
      max-width: 130px;
    }
    .qr-box img {
      width: 100%;
      height: auto;
      display: block;
    }
    .friend-links-area {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      margin-bottom: 24px;
      font-size: 0.85rem;
    }
    .friend-links-area a {
      color: #94a3b8;
      margin-right: 14px;
      display: inline-block;
      margin-bottom: 6px;
    }
    .friend-links-area a:hover {
      color: #38bdf8;
    }
    .footer-bottom {
      border-top: 1px solid #1e293b;
      padding-top: 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      font-size: 0.85rem;
      color: #64748b;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-bottom a {
      color: #94a3b8;
    }
    .float-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .widget-btn {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-full);
      background: #ffffff;
      box-shadow: 0 6px 18px rgba(0,0,0,0.15);
      border: 1px solid #e2e8f0;
      color: var(--text-main);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      cursor: pointer;
      transition: var(--transition);
      text-decoration: none;
    }
    .widget-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: scale(1.08);
    }
    @media (max-width: 992px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero-h1 {
        font-size: 2.2rem;
      }
      .hero-stats-bar {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        border-bottom: 1px solid #e2e8f0;
      }
      .nav-links.show {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-h1 {
        font-size: 1.85rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-stats-bar {
        grid-template-columns: 1fr 1fr;
      }
      .eval-highlight-box {
        flex-direction: column;
        text-align: center;
      }
    }