:root {
      --bg-base: #0a0614;
      --bg-surface: #140d28;
      --bg-card: rgba(27, 18, 52, 0.7);
      --bg-card-hover: rgba(39, 26, 75, 0.85);
      --border-color: rgba(255, 42, 162, 0.2);
      --border-bright: rgba(255, 42, 162, 0.6);
      --text-main: #f5f2fa;
      --text-muted: #b8afcb;
      --text-sub: #867c9c;
      --neon-pink: #ff2aa2;
      --neon-purple: #9d3bff;
      --neon-cyan: #00f0ff;
      --gradient-brand: linear-gradient(135deg, #ff2aa2 0%, #9d3bff 50%, #00f0ff 100%);
      --container-max: 1200px;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      background-color: var(--bg-base);
      background-image: 
        radial-gradient(circle at 10% 15%, rgba(157, 59, 255, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 90% 85%, rgba(255, 42, 162, 0.12) 0%, transparent 45%),
        linear-gradient(to bottom, #0a0614, #120924, #080510);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      line-height: 1.6;
      overflow-x: hidden;
      min-height: 100vh;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(10, 6, 20, 0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .brand-logo-area {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .brand-logo-area img.ai-page-logo {
      height: 38px;
      width: auto;
      display: block;
    }

    .brand-title-badge {
      font-size: 1.15rem;
      font-weight: 700;
      letter-spacing: 0.5px;
      background: var(--gradient-brand);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

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

    .nav-links a {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 500;
      padding: 6px 12px;
      border-radius: 6px;
    }

    .nav-links a:hover {
      color: #fff;
      background: rgba(255, 42, 162, 0.1);
    }

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

    .btn-glow {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 9px 20px;
      border-radius: 8px;
      background: var(--gradient-brand);
      color: #fff;
      font-weight: 600;
      font-size: 0.95rem;
      box-shadow: 0 0 16px rgba(255, 42, 162, 0.4);
      border: none;
      cursor: pointer;
    }

    .btn-glow:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 24px rgba(255, 42, 162, 0.7);
      color: #fff;
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 8px 18px;
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-color);
      color: var(--text-main);
      font-weight: 500;
      font-size: 0.95rem;
      cursor: pointer;
    }

    .btn-outline:hover {
      border-color: var(--neon-pink);
      color: #fff;
      background: rgba(255, 42, 162, 0.08);
    }

    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: none;
      color: var(--text-main);
      font-size: 1.5rem;
      cursor: pointer;
    }

    .section-wrap {
      padding: 72px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    }

    .section-head {
      text-align: center;
      max-width: 760px;
      margin: 0 auto 48px;
    }

    .section-tag {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 20px;
      background: rgba(255, 42, 162, 0.12);
      border: 1px solid rgba(255, 42, 162, 0.3);
      color: var(--neon-pink);
      font-size: 0.85rem;
      font-weight: 600;
      letter-spacing: 1px;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.1rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .section-desc {
      color: var(--text-muted);
      font-size: 1.05rem;
    }

    /* Hero */
    .hero-section {
      padding: 88px 0 64px;
      text-align: center;
      position: relative;
    }

    .hero-chip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(157, 59, 255, 0.15);
      border: 1px solid rgba(157, 59, 255, 0.4);
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 0.9rem;
      color: var(--text-main);
      margin-bottom: 24px;
    }

    .hero-chip span {
      display: inline-block;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--neon-cyan);
      box-shadow: 0 0 8px var(--neon-cyan);
    }

    .hero-h1 {
      font-size: 2.8rem;
      line-height: 1.25;
      font-weight: 900;
      margin-bottom: 24px;
      background: linear-gradient(135deg, #ffffff 10%, #f0c3ff 60%, #ff82cb 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      max-width: 900px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-subtitle {
      font-size: 1.15rem;
      color: var(--text-muted);
      max-width: 780px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }

    .hero-btn-group {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
      margin-bottom: 56px;
    }

    .hero-btn-group .btn-glow {
      padding: 12px 28px;
      font-size: 1.05rem;
    }

    .stats-matrix {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px;
      backdrop-filter: blur(8px);
    }

    .stat-item {
      text-align: center;
      border-right: 1px solid rgba(255, 255, 255, 0.06);
    }

    .stat-item:last-child {
      border-right: none;
    }

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

    .stat-lbl {
      font-size: 0.85rem;
      color: var(--text-sub);
    }

    /* Cards Grid */
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 20px;
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 24px;
    }

    .grid-2 {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
      gap: 24px;
    }

    .feature-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 14px;
      padding: 24px;
      transition: all 0.25s ease;
      display: flex;
      flex-direction: column;
    }

    .feature-card:hover {
      border-color: var(--border-bright);
      background: var(--bg-card-hover);
      transform: translateY(-4px);
    }

    .feature-icon-box {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: rgba(255, 42, 162, 0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      color: var(--neon-pink);
      font-weight: bold;
      font-size: 1.2rem;
    }

    .feature-card h3 {
      font-size: 1.15rem;
      color: #fff;
      margin-bottom: 10px;
    }

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

    /* Model Badges */
    .model-tags-container {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      margin-top: 24px;
    }

    .model-tag {
      padding: 6px 14px;
      background: rgba(157, 59, 255, 0.1);
      border: 1px solid rgba(157, 59, 255, 0.25);
      border-radius: 20px;
      font-size: 0.85rem;
      color: var(--text-muted);
      transition: all 0.2s;
    }

    .model-tag:hover {
      background: var(--gradient-brand);
      color: #fff;
      border-color: transparent;
    }

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

    .step-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      position: relative;
    }

    .step-num {
      font-size: 2rem;
      font-weight: 900;
      color: rgba(255, 42, 162, 0.3);
      line-height: 1;
      margin-bottom: 12px;
    }

    .step-card h3 {
      font-size: 1.1rem;
      color: #fff;
      margin-bottom: 8px;
    }

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

    /* Image Gallery Cards */
    .media-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 14px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    .media-thumb-container {
      width: 100%;
      background: #000;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }

    .media-thumb-container img {
      width: 100%;
      height: auto;
      display: block;
      transition: transform 0.3s ease;
    }

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

    .media-info {
      padding: 20px;
    }

    .media-info h3 {
      font-size: 1.15rem;
      color: #fff;
      margin-bottom: 8px;
    }

    .media-info p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* Comparison Table */
    .table-container {
      width: 100%;
      overflow-x: auto;
      border: 1px solid var(--border-color);
      border-radius: 14px;
      background: var(--bg-card);
    }

    .eval-score-banner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 20px 24px;
      background: linear-gradient(90deg, rgba(255, 42, 162, 0.15), rgba(157, 59, 255, 0.15));
      border-bottom: 1px solid var(--border-color);
    }

    .eval-score-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: #fff;
    }

    .eval-score-digits {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.1rem;
    }

    .score-badge {
      background: var(--neon-pink);
      color: #fff;
      padding: 4px 12px;
      border-radius: 8px;
      font-weight: 800;
      font-size: 1.15rem;
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }

    .eval-table th, .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .eval-table th {
      background: rgba(0, 0, 0, 0.2);
      color: var(--text-sub);
      font-weight: 600;
    }

    .eval-table td {
      color: var(--text-muted);
    }

    .eval-table tr:hover td {
      background: rgba(255, 42, 162, 0.04);
    }

    .table-highlight {
      color: #fff;
      font-weight: 600;
    }

    .eval-tag-good {
      color: var(--neon-cyan);
      font-weight: 600;
    }

    /* FAQ */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .faq-card {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 10px;
      overflow: hidden;
    }

    .faq-btn {
      width: 100%;
      padding: 18px 20px;
      background: transparent;
      border: none;
      color: #fff;
      font-size: 1.05rem;
      font-weight: 600;
      text-align: left;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .faq-btn:hover {
      background: rgba(255, 255, 255, 0.02);
    }

    .faq-icon {
      font-size: 1.2rem;
      color: var(--neon-pink);
      transition: transform 0.25s ease;
    }

    .faq-body {
      padding: 0 20px 18px;
      color: var(--text-muted);
      font-size: 0.92rem;
      line-height: 1.65;
      display: none;
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      padding-top: 14px;
    }

    .faq-card.active .faq-body {
      display: block;
    }

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

    /* Testimonials */
    .review-author {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-top: 16px;
      padding-top: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--gradient-brand);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #fff;
      font-size: 0.95rem;
    }

    .author-meta h4 {
      font-size: 0.95rem;
      color: #fff;
    }

    .author-meta span {
      font-size: 0.8rem;
      color: var(--text-sub);
    }

    /* Form & Contact */
    .contact-container {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 36px;
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 36px;
    }

    .contact-info-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .contact-info-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
    }

    .info-icon {
      color: var(--neon-pink);
      font-size: 1.1rem;
      font-weight: 700;
    }

    .qrcode-box {
      margin-top: 20px;
      background: rgba(0, 0, 0, 0.3);
      padding: 16px;
      border-radius: 12px;
      border: 1px solid var(--border-color);
      display: inline-block;
      text-align: center;
    }

    .qrcode-box img {
      width: 140px;
      height: 140px;
      display: block;
      margin: 0 auto 8px;
      border-radius: 6px;
    }

    .qrcode-box p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .contact-form {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .form-group label {
      font-size: 0.9rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    .form-control {
      background: rgba(10, 6, 20, 0.6);
      border: 1px solid var(--border-color);
      padding: 12px 14px;
      border-radius: 8px;
      color: #fff;
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.2s;
    }

    .form-control:focus {
      border-color: var(--neon-pink);
    }

    /* Article List */
    .article-links-wrap {
      background: var(--bg-card);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      padding: 24px;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .article-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 14px;
      border-radius: 6px;
      background: rgba(255, 255, 255, 0.02);
      font-size: 0.92rem;
    }

    .article-item:hover {
      background: rgba(255, 42, 162, 0.08);
      color: #fff;
    }

    /* Footer */
    .site-footer {
      background: #06040d;
      border-top: 1px solid var(--border-color);
      padding: 48px 0 24px;
      font-size: 0.88rem;
      color: var(--text-sub);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 36px;
    }

    .footer-brand h4 {
      font-size: 1.15rem;
      color: #fff;
      margin-bottom: 12px;
    }

    .footer-brand p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    .footer-col h5 {
      color: #fff;
      font-size: 0.95rem;
      margin-bottom: 14px;
      font-weight: 600;
    }

    .footer-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-col a:hover {
      color: var(--neon-pink);
    }

    .footer-friend-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      padding: 20px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      margin-bottom: 24px;
      font-size: 0.85rem;
    }

    .footer-friend-links a {
      color: var(--text-sub);
    }

    .footer-friend-links a:hover {
      color: var(--neon-pink);
    }

    .footer-bottom {
      text-align: center;
      color: var(--text-sub);
      font-size: 0.82rem;
    }

    /* Floating Widget */
    .float-service-widget {
      position: fixed;
      right: 20px;
      bottom: 24px;
      z-index: 99;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .float-btn {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
      cursor: pointer;
      font-size: 0.9rem;
    }

    .float-btn:hover {
      border-color: var(--neon-pink);
      color: var(--neon-pink);
    }

    /* Responsive */
    @media (max-width: 992px) {
      .steps-flow {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-matrix {
        grid-template-columns: repeat(2, 1fr);
      }
      .stat-item:nth-child(2) {
        border-right: none;
      }
      .stat-item {
        margin-bottom: 12px;
      }
      .contact-container {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links, .nav-actions .btn-outline {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .mobile-nav-active .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: var(--bg-surface);
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
      }
      .hero-h1 {
        font-size: 2rem;
      }
      .section-title {
        font-size: 1.65rem;
      }
      .steps-flow {
        grid-template-columns: 1fr;
      }
      .stats-matrix {
        grid-template-columns: 1fr;
      }
      .stat-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        padding-bottom: 12px;
      }
      .stat-item:last-child {
        border-bottom: none;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }