:root {
      --primary: #ff5757;
      --primary-light: #fff0f0;
      --secondary: #ff8b3d;
      --accent-blue: #4f75fe;
      --accent-purple: #8b5cf6;
      --accent-green: #10b981;
      --accent-pink: #ec4899;
      --accent-yellow: #f59e0b;
      --bg-cream: #faf9f6;
      --bg-gradient: linear-gradient(135deg, #fff5f5 0%, #fffbf0 50%, #f0f7ff 100%);
      --text-main: #1f2937;
      --text-muted: #4b5563;
      --border-color: #fce7e7;
      --card-bg: #ffffff;
      --shadow-sm: 0 4px 14px rgba(255, 87, 87, 0.08);
      --shadow-md: 0 8px 24px rgba(244, 63, 94, 0.12);
      --shadow-hover: 0 14px 30px rgba(79, 117, 254, 0.16);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-full: 9999px;
      --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background: var(--bg-cream);
      background-image: radial-gradient(#ffdfdf 1px, transparent 1px), radial-gradient(#e0ecff 1px, var(--bg-cream) 1px);
      background-size: 40px 40px;
      background-position: 0 0, 20px 20px;
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid #ffebeb;
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .brand-wrap .ai-page-logo {
      height: 42px;
      width: auto;
    }
    .brand-title {
      font-size: 20px;
      font-weight: 800;
      color: #ff4757;
      letter-spacing: -0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .nav-links a {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-muted);
      padding: 8px 10px;
      border-radius: var(--radius-full);
      display: inline-block;
    }
    .nav-links a:hover {
      color: #ff4757;
      background: #fff1f2;
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      padding: 9px 20px;
      border-radius: var(--radius-full);
      font-size: 14px;
      font-weight: 700;
      cursor: pointer;
      border: 2px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, #ff4d6d 0%, #ff758c 100%);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(255, 77, 109, 0.35);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(255, 77, 109, 0.45);
      color: #fff;
    }
    .btn-outline {
      background: #ffffff;
      border-color: #ffb3c1;
      color: #ff4d6d;
    }
    .btn-outline:hover {
      background: #fff5f7;
      border-color: #ff4d6d;
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 24px;
      color: var(--text-main);
      cursor: pointer;
    }
    .hero-section {
      padding: 60px 0 40px;
      position: relative;
    }
    .hero-card {
      background: linear-gradient(135deg, #ffffff 0%, #fff7f7 50%, #f4f8ff 100%);
      border: 2px solid #ffd6de;
      border-radius: var(--radius-lg);
      padding: 50px 36px;
      box-shadow: 0 12px 36px rgba(255, 138, 160, 0.15);
      text-align: center;
      position: relative;
    }
    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: #ffe4e6;
      border: 1px solid #fecdd3;
      border-radius: var(--radius-full);
      margin-bottom: 20px;
    }
    .hero-badge-dot {
      width: 8px;
      height: 8px;
      background: #e11d48;
      border-radius: 50%;
      animation: pulse 1.8s infinite;
    }
    .hero-badge-text {
      font-size: 13px;
      font-weight: 700;
      color: #be123c;
    }
    h1.hero-h1 {
      font-size: 38px;
      line-height: 1.35;
      font-weight: 900;
      color: #111827;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .hero-h1 span.highlight {
      background: linear-gradient(135deg, #ff4757, #ff9f43);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      max-width: 840px;
      margin: 0 auto 30px;
      font-size: 17px;
      color: #4b5563;
      line-height: 1.7;
    }
    .hero-btns {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .btn-hero-main {
      padding: 14px 34px;
      font-size: 16px;
      background: linear-gradient(135deg, #ff3838 0%, #ff9f1a 100%);
      color: #ffffff;
      box-shadow: 0 6px 20px rgba(255, 56, 56, 0.35);
      border-radius: var(--radius-full);
    }
    .btn-hero-main:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 10px 24px rgba(255, 56, 56, 0.45);
      color: #ffffff;
    }
    .btn-hero-sub {
      padding: 14px 28px;
      font-size: 15px;
      background: #ffffff;
      color: #4f46e5;
      border: 2px solid #c7d2fe;
      border-radius: var(--radius-full);
    }
    .btn-hero-sub:hover {
      background: #eef2ff;
      border-color: #6366f1;
    }
    .hero-pill-list {
      display: flex;
      justify-content: center;
      flex-wrap: wrap;
      gap: 8px;
      max-width: 980px;
      margin: 0 auto;
    }
    .model-chip {
      background: #ffffff;
      border: 1px solid #ffd8a8;
      color: #d9480f;
      padding: 5px 12px;
      border-radius: var(--radius-full);
      font-size: 12px;
      font-weight: 600;
      transition: var(--transition);
    }
    .model-chip:hover {
      background: #ffe8cc;
      transform: translateY(-2px);
    }
    .metrics-bar {
      margin-top: 30px;
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }
    .metric-card {
      background: #ffffff;
      border: 1px solid #fed7aa;
      border-radius: var(--radius-md);
      padding: 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .metric-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: #f97316;
    }
    .metric-num {
      font-size: 28px;
      font-weight: 800;
      color: #ea580c;
      margin-bottom: 4px;
    }
    .metric-label {
      font-size: 13px;
      color: #6b7280;
      font-weight: 600;
    }
    .section-wrap {
      padding: 60px 0;
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 40px;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: #fdf2f8;
      border: 1px solid #fbcfe8;
      color: #db2777;
      font-size: 12px;
      font-weight: 700;
      border-radius: var(--radius-full);
      margin-bottom: 10px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }
    h2.section-title {
      font-size: 30px;
      font-weight: 800;
      color: #1f2937;
      margin-bottom: 12px;
    }
    .section-subtitle {
      font-size: 15px;
      color: #4b5563;
      line-height: 1.6;
    }
    .intro-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .candy-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid #fee2e2;
      padding: 26px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }
    .candy-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: #fca5a5;
    }
    .card-icon {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 18px;
    }
    .card-icon.red { background: #ffe4e6; color: #e11d48; }
    .card-icon.blue { background: #e0e7ff; color: #4338ca; }
    .card-icon.green { background: #dcfce7; color: #15803d; }
    .card-icon.yellow { background: #fef3c7; color: #b45309; }
    .card-icon.purple { background: #f3e8ff; color: #7e22ce; }
    .card-icon.cyan { background: #cffafe; color: #0e7490; }
    h3.card-title {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 10px;
      color: #111827;
    }
    .card-text {
      font-size: 14px;
      color: #4b5563;
      line-height: 1.6;
      flex-grow: 1;
    }
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .scene-item {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid #fed7aa;
      padding: 20px;
      box-shadow: 0 3px 10px rgba(0,0,0,0.02);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .scene-item:hover {
      border-color: #f97316;
      box-shadow: 0 8px 20px rgba(249, 115, 22, 0.12);
      transform: translateY(-3px);
    }
    .scene-item-badge {
      align-self: flex-start;
      padding: 3px 8px;
      font-size: 11px;
      font-weight: 700;
      border-radius: var(--radius-sm);
      background: #fff7ed;
      color: #c2410c;
      margin-bottom: 10px;
      border: 1px solid #ffedd5;
    }
    .media-card-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 24px;
      align-items: stretch;
    }
    .media-box {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid #e2e8f0;
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .media-box .img-holder {
      background: #f8fafc;
      overflow: hidden;
      width: 100%;
    }
    .media-box .img-holder img {
      width: 100%;
      height: 240px;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .media-box:hover .img-holder img {
      transform: scale(1.03);
    }
    .media-content {
      padding: 20px;
      flex-grow: 1;
    }
    .compare-container {
      background: #ffffff;
      border-radius: var(--radius-lg);
      border: 2px solid #fecdd3;
      padding: 30px;
      box-shadow: 0 10px 30px rgba(254, 205, 211, 0.25);
    }
    .rating-banner {
      background: linear-gradient(135deg, #fff1f2 0%, #fffbeb 100%);
      border: 1px dashed #f43f5e;
      border-radius: var(--radius-md);
      padding: 20px;
      display: flex;
      align-items: center;
      justify-content: space-around;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 30px;
    }
    .rating-item {
      text-align: center;
    }
    .rating-item .score-val {
      font-size: 32px;
      font-weight: 900;
      color: #e11d48;
    }
    .rating-item .score-stars {
      color: #f59e0b;
      font-size: 18px;
    }
    .rating-item .score-desc {
      font-size: 13px;
      color: #64748b;
      margin-top: 2px;
    }
    .table-responsive {
      width: 100%;
      overflow-x: auto;
    }
    .styled-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      font-size: 14px;
      text-align: left;
    }
    .styled-table th, .styled-table td {
      padding: 16px 14px;
      border-bottom: 1px solid #f1f5f9;
    }
    .styled-table th {
      background: #f8fafc;
      color: #334155;
      font-weight: 700;
    }
    .styled-table th.highlight-col {
      background: #fff1f2;
      color: #e11d48;
      border-top: 2px solid #f43f5e;
    }
    .styled-table td.highlight-col {
      background: #fff8f8;
      color: #9f1239;
      font-weight: 600;
    }
    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: #ffffff;
      border: 1px solid #e0e7ff;
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      position: relative;
      transition: var(--transition);
    }
    .step-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 10px 20px rgba(99, 102, 241, 0.1);
      border-color: #818cf8;
    }
    .step-badge {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, #4f46e5, #9333ea);
      color: #fff;
      font-weight: 800;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
    }
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border-radius: var(--radius-md);
      border: 1px solid #fecdd3;
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }
    .review-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, #f43f5e, #fb923c);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      font-size: 16px;
    }
    .review-role {
      font-size: 12px;
      color: #6b7280;
    }
    .review-quote {
      font-size: 14px;
      color: #4b5563;
      line-height: 1.6;
      font-style: italic;
    }
    .faq-accordion {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid #fed7aa;
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item.active {
      border-color: #ea580c;
      box-shadow: 0 4px 12px rgba(234, 88, 12, 0.1);
    }
    .faq-header {
      padding: 16px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      cursor: pointer;
      user-select: none;
      background: #fff;
      font-weight: 700;
      font-size: 15px;
      color: #1f2937;
    }
    .faq-header:hover {
      background: #fff7ed;
    }
    .faq-toggle-icon {
      font-size: 16px;
      color: #f97316;
      transition: transform 0.2s ease;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }
    .faq-body {
      padding: 0 20px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
      background: #fffcf9;
      color: #4b5563;
      font-size: 14px;
      line-height: 1.6;
    }
    .faq-item.active .faq-body {
      padding: 16px 20px;
      max-height: 250px;
      border-top: 1px dashed #fed7aa;
    }
    .form-box {
      background: linear-gradient(135deg, #ffffff 0%, #fff5f5 100%);
      border: 2px solid #fecdd3;
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
      max-width: 850px;
      margin: 0 auto;
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      margin-bottom: 18px;
    }
    .form-group.full-width {
      grid-column: span 2;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 700;
      color: #374151;
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border: 1.5px solid #d1d5db;
      border-radius: var(--radius-sm);
      font-size: 14px;
      outline: none;
      transition: var(--transition);
      background: #ffffff;
    }
    .form-control:focus {
      border-color: #ff4757;
      box-shadow: 0 0 0 3px rgba(255, 71, 87, 0.15);
    }
    textarea.form-control {
      min-height: 100px;
      resize: vertical;
    }
    .btn-submit {
      width: 100%;
      padding: 14px;
      font-size: 16px;
      font-weight: 700;
      background: linear-gradient(135deg, #ff4757 0%, #ff6b81 100%);
      color: #fff;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 6px 16px rgba(255, 71, 87, 0.3);
      transition: var(--transition);
    }
    .btn-submit:hover {
      background: linear-gradient(135deg, #ee3545 0%, #ff5252 100%);
      box-shadow: 0 8px 22px rgba(255, 71, 87, 0.45);
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 30px;
      align-items: center;
      background: #ffffff;
      border: 1px solid #ffd8a8;
      border-radius: var(--radius-lg);
      padding: 36px;
    }
    .contact-info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 15px;
      color: #374151;
    }
    .contact-qr-wrap {
      text-align: center;
      padding: 20px;
      background: #fffaf0;
      border: 2px dashed #fbd38d;
      border-radius: var(--radius-md);
    }
    .contact-qr-wrap img {
      max-width: 160px;
      margin: 0 auto 12px;
      border-radius: 8px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.06);
    }
    .article-chips-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 14px;
    }
    .article-chip {
      background: #ffffff;
      border: 1px solid #bfdbfe;
      color: #1d4ed8;
      padding: 8px 14px;
      border-radius: var(--radius-sm);
      font-size: 13px;
      transition: var(--transition);
    }
    .article-chip:hover {
      background: #eff6ff;
      border-color: #3b82f6;
    }
    footer.site-footer {
      background: #ffffff;
      border-top: 2px solid #fed7aa;
      padding: 50px 0 30px;
      color: #4b5563;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 30px;
    }
    .footer-brand p {
      font-size: 14px;
      line-height: 1.6;
      color: #6b7280;
      margin-top: 10px;
      max-width: 400px;
    }
    .footer-links-title {
      font-size: 15px;
      font-weight: 700;
      color: #1f2937;
      margin-bottom: 12px;
    }
    .footer-links-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links-list a {
      font-size: 13px;
      color: #6b7280;
    }
    .footer-links-list a:hover {
      color: #ff4757;
    }
    .friend-links-box {
      border-top: 1px solid #f3f4f6;
      padding: 20px 0;
      font-size: 13px;
    }
    .friend-links-box a {
      margin-right: 14px;
      color: #6b7280;
      display: inline-block;
      margin-bottom: 6px;
    }
    .friend-links-box a:hover {
      color: #ea580c;
    }
    .footer-bottom {
      border-top: 1px solid #f3f4f6;
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 13px;
      color: #9ca3af;
    }
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: linear-gradient(135deg, #ff4757, #ff6b81);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 6px 16px rgba(255, 71, 87, 0.4);
      cursor: pointer;
      font-size: 20px;
      transition: var(--transition);
      border: none;
    }
    .float-btn:hover {
      transform: scale(1.1);
    }
    @keyframes pulse {
      0% { transform: scale(0.95); opacity: 0.8; }
      50% { transform: scale(1.2); opacity: 1; }
      100% { transform: scale(0.95); opacity: 0.8; }
    }
    @media (max-width: 992px) {
      .intro-grid, .scene-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-bar, .process-steps {
        grid-template-columns: repeat(2, 1fr);
      }
      .media-card-grid {
        grid-template-columns: 1fr;
      }
      .contact-grid {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .mobile-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        border-bottom: 2px solid #ffd6de;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.active {
        display: flex;
      }
      h1.hero-h1 {
        font-size: 26px;
      }
      h2.section-title {
        font-size: 24px;
      }
      .intro-grid, .scene-grid, .reviews-grid, .metrics-bar, .process-steps {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full-width {
        grid-column: span 1;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
      .hero-card {
        padding: 30px 16px;
      }
    }