:root {
      --primary: #ff5500;
      --primary-hover: #e04b00;
      --primary-light: #fff3ec;
      --primary-glow: rgba(255, 85, 0, 0.18);
      --dark-text: #1a1e24;
      --body-text: #374151;
      --muted-text: #6b7280;
      --border-color: #fee2d5;
      --card-border: #fce7db;
      --bg-main: #faf8f5;
      --bg-card: #ffffff;
      --bg-section: #f5f2eb;
      --shadow-sm: 0 2px 8px rgba(255, 85, 0, 0.05);
      --shadow-md: 0 8px 24px rgba(255, 85, 0, 0.08);
      --shadow-lg: 0 16px 36px rgba(255, 85, 0, 0.12);
      --radius: 12px;
      --transition: all 0.28s ease-in-out;
    }
    * {
      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(--body-text);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    ul, ol {
      list-style: none;
    }
    .site-container {
      max-width: 1200px;
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
      width: 100%;
    }
    .text-center { text-align: center; }
    .text-primary { color: var(--primary); }
    .bold { font-weight: 700; }

    /* Header & Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
    }
    .brand-title {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--dark-text);
      letter-spacing: -0.5px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
    }
    .nav-links li a {
      padding: 10px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--dark-text);
      border-radius: 6px;
      display: block;
    }
    .nav-links li a:hover {
      color: var(--primary);
      background-color: var(--primary-light);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .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: linear-gradient(135deg, #ff6a00, #ff4500);
      color: #ffffff !important;
      box-shadow: 0 4px 14px rgba(255, 69, 0, 0.3);
    }
    .btn-primary:hover {
      background: linear-gradient(135deg, #ff5500, #d93a00);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(255, 69, 0, 0.4);
    }
    .btn-outline {
      border-color: var(--primary);
      color: var(--primary);
      background: #ffffff;
    }
    .btn-outline:hover {
      background: var(--primary-light);
      border-color: var(--primary-hover);
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--dark-text);
      cursor: pointer;
    }

    /* Hero Section (No Images Allowed) */
    .hero-section {
      padding: 80px 0 60px;
      background: linear-gradient(180deg, #fff7f2 0%, #faf8f5 100%);
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: var(--primary-light);
      border: 1px solid var(--border-color);
      border-radius: 30px;
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 24px;
    }
    .hero-badge span.pulse-dot {
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
      display: inline-block;
      box-shadow: 0 0 0 4px rgba(255, 85, 0, 0.2);
    }
    .hero-title {
      font-size: 2.75rem;
      line-height: 1.25;
      font-weight: 850;
      color: var(--dark-text);
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--body-text);
      max-width: 800px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }
    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }
    .hero-cta-group .btn-lg {
      padding: 14px 34px;
      font-size: 1.1rem;
      border-radius: 10px;
    }
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 10px;
    }
    .stat-card {
      background: #ffffff;
      padding: 24px 20px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: var(--transition);
    }
    .stat-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .stat-number {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .stat-label {
      font-size: 0.9rem;
      color: var(--muted-text);
      font-weight: 500;
    }

    /* Section Common Styles */
    .section-wrap {
      padding: 70px 0;
      position: relative;
    }
    .section-wrap.alt-bg {
      background-color: var(--bg-section);
    }
    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }
    .section-tag {
      display: inline-block;
      color: var(--primary);
      font-weight: 700;
      font-size: 0.85rem;
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 8px;
    }
    .section-heading {
      font-size: 2.1rem;
      font-weight: 800;
      color: var(--dark-text);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--muted-text);
      line-height: 1.6;
    }

    /* Model Pill Tags */
    .model-pills-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-bottom: 40px;
    }
    .model-pill {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--dark-text);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .model-pill:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    /* Cards Grid */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: var(--bg-card);
      border-radius: var(--radius);
      border: 1px solid var(--card-border);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .feature-icon-box {
      width: 52px;
      height: 52px;
      background: var(--primary-light);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
      color: var(--primary);
      font-size: 1.5rem;
      font-weight: bold;
    }
    .feature-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 12px;
    }
    .feature-text {
      font-size: 0.92rem;
      color: var(--body-text);
      line-height: 1.65;
      flex-grow: 1;
    }

    /* Comparison Table Component */
    .comparison-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      overflow: hidden;
      margin-bottom: 30px;
    }
    .score-banner {
      background: linear-gradient(135deg, #ff5500, #ff3300);
      color: #ffffff;
      padding: 24px 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
    }
    .score-left h3 {
      font-size: 1.4rem;
      font-weight: 800;
      margin-bottom: 6px;
    }
    .score-left p {
      font-size: 0.95rem;
      opacity: 0.9;
    }
    .score-badge-group {
      display: flex;
      align-items: center;
      gap: 16px;
      background: rgba(255, 255, 255, 0.15);
      padding: 10px 20px;
      border-radius: 10px;
    }
    .score-number {
      font-size: 2.2rem;
      font-weight: 900;
      line-height: 1;
    }
    .stars {
      color: #ffdc33;
      font-size: 1.2rem;
      letter-spacing: 2px;
    }
    .table-container {
      width: 100%;
      overflow-x: auto;
    }
    .custom-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }
    .custom-table th, .custom-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f0e9e2;
    }
    .custom-table th {
      background: #faf6f0;
      color: var(--dark-text);
      font-weight: 700;
    }
    .custom-table tr:hover td {
      background-color: #fff9f5;
    }
    .table-check {
      color: #ff5500;
      font-weight: bold;
    }
    .table-cross {
      color: #9ca3af;
    }

    /* Workflow Steps Component */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .step-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      position: relative;
      transition: var(--transition);
    }
    .step-card:hover {
      border-color: var(--primary);
      transform: translateY(-4px);
      box-shadow: var(--shadow-sm);
    }
    .step-number {
      font-size: 1.5rem;
      font-weight: 900;
      color: var(--primary);
      margin-bottom: 10px;
      display: inline-block;
      background: var(--primary-light);
      padding: 4px 14px;
      border-radius: 8px;
    }
    .step-title {
      font-size: 1.1rem;
      font-weight: 750;
      color: var(--dark-text);
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 0.88rem;
      color: var(--muted-text);
      line-height: 1.6;
    }

    /* Visual Media Showcase Section */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      margin-bottom: 30px;
    }
    .media-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }
    .media-card:hover {
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .media-card-img-wrap {
      width: 100%;
      height: 240px;
      background-color: #eee;
      overflow: hidden;
    }
    .media-card-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }
    .media-card:hover .media-card-img-wrap img {
      transform: scale(1.03);
    }
    .media-card-body {
      padding: 20px;
    }
    .media-card-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 6px;
    }
    .media-card-desc {
      font-size: 0.88rem;
      color: var(--muted-text);
    }
    .banner-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 24px;
    }
    .banner-thumb {
      border-radius: 8px;
      overflow: hidden;
      border: 1px solid var(--border-color);
      background: #fff;
    }
    .banner-thumb img {
      width: 100%;
      height: 140px;
      object-fit: cover;
      display: block;
    }

    /* Reviews Grid */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: #ffffff;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-quote {
      font-size: 0.94rem;
      color: var(--body-text);
      line-height: 1.7;
      margin-bottom: 20px;
      position: relative;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px dashed #f0e6dd;
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
    }
    .author-info h4 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--dark-text);
    }
    .author-info p {
      font-size: 0.82rem;
      color: var(--muted-text);
    }

    /* FAQ Accordion */
    .faq-container {
      max-width: 900px;
      margin: 0 auto;
    }
    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 10px;
      margin-bottom: 12px;
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark-text);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-question:hover {
      background-color: var(--primary-light);
      color: var(--primary);
    }
    .faq-icon {
      font-size: 1.2rem;
      font-weight: 400;
      transition: transform 0.25s ease;
      color: var(--primary);
    }
    .faq-item.active .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background-color: #ffffff;
      padding: 0 24px;
    }
    .faq-answer p {
      padding: 16px 0 20px;
      font-size: 0.93rem;
      color: var(--body-text);
      line-height: 1.7;
      border-top: 1px solid #f9efe8;
    }
    .faq-item.active .faq-answer {
      max-height: 300px;
    }

    /* Form & Contact Section */
    .form-layout-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 36px;
      align-items: start;
    }
    .contact-info-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: var(--shadow-sm);
    }
    .contact-info-title {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--dark-text);
      margin-bottom: 20px;
    }
    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      margin-bottom: 18px;
      font-size: 0.95rem;
    }
    .contact-label {
      font-weight: 700;
      color: var(--dark-text);
      min-width: 90px;
    }
    .contact-value {
      color: var(--body-text);
    }
    .qr-block {
      margin-top: 24px;
      text-align: center;
      background: var(--primary-light);
      padding: 20px;
      border-radius: 12px;
      border: 1px dashed var(--primary);
    }
    .qr-block img {
      width: 140px;
      height: 140px;
      display: block;
      margin: 0 auto 10px;
      border-radius: 6px;
      background: #fff;
    }
    .qr-text {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--dark-text);
    }
    .form-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: var(--shadow-md);
    }
    .form-group {
      margin-bottom: 20px;
    }
    .form-label {
      display: block;
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--dark-text);
      margin-bottom: 8px;
    }
    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 1px solid #d1d5db;
      border-radius: 8px;
      background-color: #faf8f6;
      color: var(--dark-text);
      transition: var(--transition);
      outline: none;
    }
    .form-control:focus {
      border-color: var(--primary);
      background-color: #ffffff;
      box-shadow: 0 0 0 3px rgba(255, 85, 0, 0.15);
    }
    textarea.form-control {
      resize: vertical;
      min-height: 110px;
    }

    /* Article List Section */
    .article-section {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 50px 0;
    }
    .article-link-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 20px;
    }
    .article-tag-item {
      background: var(--bg-main);
      border: 1px solid var(--border-color);
      padding: 8px 18px;
      border-radius: 8px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--dark-text);
    }
    .article-tag-item:hover {
      background: var(--primary-light);
      color: var(--primary);
      border-color: var(--primary);
    }

    /* Footer */
    .site-footer {
      background-color: #201a18;
      color: #e5ded9;
      padding: 60px 0 30px;
      border-top: 3px solid var(--primary);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-col h4 {
      color: #ffffff;
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 20px;
      position: relative;
      padding-bottom: 8px;
    }
    .footer-col h4::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 28px;
      height: 2px;
      background-color: var(--primary);
    }
    .footer-desc {
      font-size: 0.9rem;
      line-height: 1.7;
      color: #b5aba4;
      margin-bottom: 20px;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a {
      color: #c7beba;
      font-size: 0.9rem;
    }
    .footer-links a:hover {
      color: #ff8533;
      padding-left: 4px;
    }
    .friendly-links-wrap {
      border-top: 1px solid #382f2c;
      padding-top: 24px;
      margin-bottom: 24px;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 14px;
      font-size: 0.88rem;
    }
    .friendly-links-wrap a {
      color: #d1c7c2;
    }
    .friendly-links-wrap a:hover {
      color: #ff7722;
      text-decoration: underline;
    }
    .footer-bottom {
      border-top: 1px solid #332b28;
      padding-top: 20px;
      text-align: center;
      font-size: 0.85rem;
      color: #9c918b;
    }

    /* Floating Widget */
    .floating-kefu {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .float-btn {
      width: 50px;
      height: 50px;
      background: #ff5500;
      color: #ffffff;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      font-weight: bold;
      box-shadow: 0 4px 16px rgba(255, 85, 0, 0.4);
      cursor: pointer;
      transition: var(--transition);
      border: 2px solid #ffffff;
    }
    .float-btn:hover {
      transform: scale(1.08);
      background: #e04b00;
    }

    /* Responsive Queries */
    @media (max-width: 1024px) {
      .hero-stats-grid { grid-template-columns: repeat(2, 1fr); }
      .feature-grid { grid-template-columns: repeat(2, 1fr); }
      .steps-grid { grid-template-columns: repeat(2, 1fr); }
      .review-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: repeat(2, 1fr); }
      .banner-strip { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .mobile-menu-btn { display: block; }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #ffffff;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        border-bottom: 1px solid var(--border-color);
        padding: 20px;
      }
      .nav-menu.show { display: block; }
      .nav-links {
        flex-direction: column;
        align-items: flex-start;
      }
      .nav-links li { width: 100%; }
      .nav-links li a { width: 100%; padding: 12px 0; border-bottom: 1px solid #f3ece6; }
      .hero-title { font-size: 2rem; }
      .hero-stats-grid { grid-template-columns: 1fr; }
      .feature-grid { grid-template-columns: 1fr; }
      .showcase-grid { grid-template-columns: 1fr; }
      .steps-grid { grid-template-columns: 1fr; }
      .review-grid { grid-template-columns: 1fr; }
      .form-layout-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .banner-strip { grid-template-columns: 1fr; }
      .score-banner { flex-direction: column; text-align: center; }
      .score-badge-group { width: 100%; justify-content: center; }
    }