/* CSS Reset & Variables */
    :root {
      --primary: #7c3aed;
      --primary-dark: #5b21b6;
      --primary-light: #8b5cf6;
      --primary-ultra-light: #f5f3ff;
      --accent: #d946ef;
      --accent-pink: #ec4899;
      --text-main: #1f1235;
      --text-muted: #5e5274;
      --text-light: #827599;
      --bg-page: #faf8ff;
      --bg-card: #ffffff;
      --border-color: #ede9fe;
      --shadow-sm: 0 2px 8px rgba(124, 58, 237, 0.06);
      --shadow-md: 0 8px 24px rgba(124, 58, 237, 0.08);
      --shadow-lg: 0 16px 36px rgba(124, 58, 237, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      -webkit-tap-highlight-color: transparent;
    }

    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-page);
      background-image: 
        radial-gradient(circle at 15% 10%, rgba(217, 70, 239, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 85% 60%, rgba(124, 58, 237, 0.04) 0%, transparent 45%);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

    /* Container System */
    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* Typography */
    h1, h2, h3, h4 {
      color: var(--text-main);
      font-weight: 700;
      line-height: 1.3;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: var(--transition);
    }

    /* 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: 0 2px 10px rgba(124, 58, 237, 0.03);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }

    .brand-box {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
    }

    .brand-logo-wrap {
      width: 42px;
      height: 42px;
      border-radius: var(--radius-sm);
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
      background: #fff;
    }

    .brand-name {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: 0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      display: inline-block;
      padding: 8px 14px;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      border-radius: var(--radius-sm);
    }

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

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

    .btn-header {
      padding: 8px 18px;
      font-size: 0.9rem;
      font-weight: 600;
      border-radius: 30px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      color: #fff !important;
      box-shadow: 0 4px 12px rgba(124, 58, 237, 0.25);
    }

    .btn-header:hover {
      opacity: 0.92;
      transform: translateY(-1px);
    }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 6px;
    }

    /* Hero Section (No Images Allowed) */
    .hero-section {
      padding: 80px 0 60px;
      background: linear-gradient(180deg, #fbf9ff 0%, #f4effe 100%);
      position: relative;
      border-bottom: 1px solid var(--border-color);
    }

    .hero-wrapper {
      text-align: center;
      max-width: 900px;
      margin: 0 auto;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: #ffffff;
      border: 1px solid #d8b4fe;
      border-radius: 30px;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary);
      box-shadow: var(--shadow-sm);
      margin-bottom: 24px;
    }

    .hero-badge .dot {
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--accent);
    }

    .hero-title {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      color: var(--text-main);
    }

    .hero-title .gradient-text {
      background: linear-gradient(135deg, #6d28d9 0%, #c026d3 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 36px;
    }

    .hero-cta-group {
      display: flex;
      justify-content: center;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 48px;
    }

    .btn-main-hero {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 34px;
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff !important;
      background: linear-gradient(135deg, #7c3aed 0%, #d946ef 100%);
      border-radius: 30px;
      box-shadow: 0 8px 25px rgba(124, 58, 237, 0.35);
      transition: var(--transition);
    }

    .btn-main-hero:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 30px rgba(124, 58, 237, 0.45);
    }

    .btn-secondary-hero {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 28px;
      font-size: 1.02rem;
      font-weight: 600;
      color: var(--primary);
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: 30px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .btn-secondary-hero:hover {
      background: var(--primary-ultra-light);
      border-color: var(--primary-light);
      transform: translateY(-2px);
    }

    /* Hero Stats Grid */
    .hero-stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-top: 10px;
    }

    .stat-card-clean {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 20px 16px;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: var(--transition);
    }

    .stat-card-clean:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: #d8b4fe;
    }

    .stat-number {
      font-size: 1.9rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .stat-label {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* Common Section Styles */
    .section-wrap {
      padding: 75px 0;
      border-bottom: 1px solid var(--border-color);
      position: relative;
    }

    .section-header {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 50px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: var(--primary-ultra-light);
      color: var(--primary);
      border: 1px solid #d8b4fe;
      border-radius: 20px;
      font-size: 0.82rem;
      font-weight: 600;
      margin-bottom: 12px;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* Models Wall / Chips */
    .models-chip-grid {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      margin-top: 24px;
    }

    .model-chip {
      background: #ffffff;
      border: 1px solid var(--border-color);
      padding: 8px 18px;
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .model-chip:hover {
      background: var(--primary-ultra-light);
      border-color: var(--primary-light);
      color: var(--primary);
      transform: translateY(-2px);
    }

    .model-chip .chip-dot {
      width: 6px;
      height: 6px;
      background: var(--primary);
      border-radius: 50%;
    }

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

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

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #c4b5fd;
    }

    .card-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--primary-ultra-light) 0%, #f3e8ff 100%);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      font-weight: bold;
      margin-bottom: 20px;
      border: 1px solid #ddd6fe;
    }

    .service-card h3 {
      font-size: 1.22rem;
      margin-bottom: 10px;
      color: var(--text-main);
    }

    .service-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .service-card .card-feature-list {
      margin-top: 16px;
      padding-top: 16px;
      border-top: 1px solid #f3efff;
      list-style: none;
    }

    .service-card .card-feature-list li {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 6px;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .service-card .card-feature-list li::before {
      content: "✓";
      color: var(--primary);
      font-weight: bold;
    }

    /* Media & Promo Section */
    .media-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

    .media-card:hover {
      box-shadow: var(--shadow-md);
      border-color: #c4b5fd;
    }

    .media-img-container {
      width: 100%;
      background: #f5f3ff;
      overflow: hidden;
    }

    .media-img-container img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.4s ease;
    }

    .media-card:hover .media-img-container img {
      transform: scale(1.03);
    }

    .media-content {
      padding: 20px;
    }

    .media-content h4 {
      font-size: 1.1rem;
      margin-bottom: 8px;
    }

    .media-content p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* Comparison Table / Evaluation (9.9 Points) */
    .eval-highlight-box {
      background: linear-gradient(135deg, #ffffff 0%, #fbf8ff 100%);
      border: 2px solid #ddd6fe;
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-md);
      margin-bottom: 30px;
    }

    .eval-score-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
      padding-bottom: 24px;
      border-bottom: 1px solid var(--border-color);
      margin-bottom: 24px;
    }

    .score-badge-box {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .big-score {
      font-size: 3rem;
      font-weight: 900;
      color: var(--primary);
      line-height: 1;
    }

    .stars-box {
      color: #f59e0b;
      font-size: 1.2rem;
      margin-bottom: 4px;
    }

    .eval-table-wrap {
      overflow-x: auto;
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      min-width: 600px;
    }

    .eval-table th {
      background: var(--primary-ultra-light);
      color: var(--primary-dark);
      font-weight: 700;
      padding: 14px 18px;
      font-size: 0.95rem;
      border-bottom: 2px solid var(--border-color);
    }

    .eval-table td {
      padding: 14px 18px;
      border-bottom: 1px solid #f1edff;
      font-size: 0.92rem;
      color: var(--text-main);
    }

    .eval-table tr:hover td {
      background: #faf8ff;
    }

    .eval-table .highlight-col {
      background: rgba(124, 58, 237, 0.03);
      font-weight: 600;
      color: var(--primary-dark);
    }

    /* Workflow Steps */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .step-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      box-shadow: var(--shadow-sm);
      text-align: center;
      position: relative;
    }

    .step-num {
      width: 38px;
      height: 38px;
      line-height: 38px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      color: #ffffff;
      font-weight: 800;
      margin: 0 auto 16px;
      font-size: 1rem;
    }

    .step-item h4 {
      font-size: 1.1rem;
      margin-bottom: 8px;
    }

    .step-item p {
      font-size: 0.88rem;
      color: var(--text-muted);
    }

    /* Testimonials (6 reviews) */
    .testimonial-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testimonial-text {
      font-size: 0.92rem;
      color: var(--text-main);
      line-height: 1.65;
      margin-bottom: 16px;
      font-style: normal;
    }

    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f3efff;
      padding-top: 12px;
    }

    .user-avatar-initial {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, #ddd6fe 0%, #e9d5ff 100%);
      color: var(--primary);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
    }

    .user-meta-name {
      font-weight: 700;
      font-size: 0.92rem;
      color: var(--text-main);
    }

    .user-meta-role {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* FAQ Accordion */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      box-shadow: var(--shadow-sm);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: #c4b5fd;
    }

    .faq-question {
      padding: 18px 22px;
      font-size: 1.02rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-icon {
      font-size: 1.2rem;
      color: var(--primary);
      transition: transform 0.3s ease;
    }

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

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #faf8ff;
      border-top: 1px solid transparent;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
      padding: 16px 22px;
      border-top-color: var(--border-color);
    }

    .faq-answer p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* Form Section */
    .form-box-wrapper {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: var(--shadow-md);
      max-width: 760px;
      margin: 0 auto;
    }

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

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 16px;
      font-size: 0.95rem;
      border: 1px solid #d8b4fe;
      border-radius: var(--radius-sm);
      background: #fff;
      color: var(--text-main);
      outline: none;
      transition: var(--transition);
      font-family: inherit;
    }

    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
    }

    .form-row-2 {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .btn-submit-form {
      width: 100%;
      padding: 14px;
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff;
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 6px 20px rgba(124, 58, 237, 0.3);
      transition: var(--transition);
    }

    .btn-submit-form:hover {
      opacity: 0.95;
      transform: translateY(-1px);
    }

    /* Articles / Knowledge Section */
    .articles-list-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .article-row-link {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 14px 12px;
      border-bottom: 1px solid #f3efff;
      color: var(--text-main);
      font-size: 0.95rem;
      transition: var(--transition);
    }

    .article-row-link:last-child {
      border-bottom: none;
    }

    .article-row-link:hover {
      color: var(--primary);
      background: var(--primary-ultra-light);
      border-radius: var(--radius-sm);
      padding-left: 18px;
    }

    /* Footer Section */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 30px;
      color: var(--text-muted);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-col h4 {
      font-size: 1.05rem;
      color: var(--text-main);
      margin-bottom: 18px;
      font-weight: 700;
    }

    .footer-links-list {
      list-style: none;
    }

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

    .footer-links-list li a {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    .footer-links-list li a:hover {
      color: var(--primary);
    }

    .qr-contact-box {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .qr-img-wrap {
      width: 88px;
      height: 88px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      overflow: hidden;
      background: #fff;
      padding: 4px;
    }

    .qr-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .contact-info-text {
      font-size: 0.85rem;
      line-height: 1.6;
    }

    .contact-info-text p {
      margin-bottom: 4px;
    }

    /* Friend Links Bar */
    .friend-links-bar {
      padding: 20px 0;
      border-top: 1px solid #f3efff;
      border-bottom: 1px solid #f3efff;
      margin-bottom: 24px;
      font-size: 0.88rem;
    }

    .friend-links-bar .links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }

    .friend-links-bar a {
      color: var(--text-muted);
    }

    .friend-links-bar a:hover {
      color: var(--primary);
    }

    .copyright-row {
      text-align: center;
      font-size: 0.85rem;
      color: var(--text-light);
    }

    /* Floating Contact Widget */
    .floating-widget {
      position: fixed;
      right: 20px;
      bottom: 30px;
      z-index: 990;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--primary);
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      font-size: 1.1rem;
      transition: var(--transition);
      text-decoration: none;
    }

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

    /* Responsive Queries */
    @media (max-width: 992px) {
      .hero-title {
        font-size: 2.2rem;
      }
      .grid-4, .hero-stats-grid, .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
      }
      .nav-links.show {
        display: flex;
      }
      .nav-links li {
        width: 100%;
        text-align: center;
      }
      .nav-links li a {
        display: block;
        padding: 10px;
      }
      .nav-toggle {
        display: block;
      }
      .hero-title {
        font-size: 1.8rem;
      }
      .grid-2, .grid-3, .grid-4, .hero-stats-grid, .steps-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .form-row-2 {
        grid-template-columns: 1fr;
      }
      .eval-score-header {
        flex-direction: column;
        align-items: flex-start;
      }
    }