/* Reset & Base Variables */
    :root {
      --primary: #FF5A79; /* 糖果粉 */
      --secondary: #3B82F6; /* 活力蓝 */
      --accent-yellow: #FFC000; /* 柠檬黄 */
      --accent-green: #10B981; /* 薄荷绿 */
      --accent-purple: #8B5CF6; /* 柔和紫 */
      --bg-gradient: linear-gradient(135deg, #FFF5F7 0%, #F0F7FF 50%, #F5F3FF 100%);
      --text-main: #2D3748;
      --text-muted: #718096;
      --white: #FFFFFF;
      --card-bg: rgba(255, 255, 255, 0.85);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      --radius: 20px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
      color: var(--text-main);
      background: #FAFAFC;
    }

    body {
      background: var(--bg-gradient);
      min-height: 100vh;
      overflow-x: hidden;
      line-height: 1.6;
    }

    /* Typography */
    h1, h2, h3, h4 {
      font-weight: 800;
      line-height: 1.3;
    }

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

    /* Main Container layout */
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* Header & Navigation */
    header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.8);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(255, 90, 121, 0.1);
      box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

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

    .ai-page-logo {
      height: 40px;
      width: auto;
      display: block;
    }

    .brand-name {
      font-size: 1.25rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--primary), var(--accent-purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .nav-menu {
      display: flex;
      align-items: center;
      gap: 24px;
      list-style: none;
    }

    .nav-link {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-main);
      padding: 8px 12px;
      border-radius: 30px;
    }

    .nav-link:hover {
      background: rgba(255, 90, 121, 0.08);
      color: var(--primary);
    }

    .nav-btn {
      background: linear-gradient(135deg, var(--primary), var(--accent-purple));
      color: var(--white);
      padding: 10px 24px;
      border-radius: 30px;
      font-weight: 700;
      box-shadow: 0 8px 20px rgba(255, 90, 121, 0.25);
    }

    .nav-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(255, 90, 121, 0.35);
      color: var(--white);
    }

    .menu-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }

    .menu-toggle span {
      display: block;
      width: 25px;
      height: 3px;
      background-color: var(--text-main);
      margin: 5px 0;
      transition: var(--transition);
      border-radius: 2px;
    }

    /* Section Styling */
    section {
      padding: 80px 0;
      position: relative;
    }

    .section-title {
      text-align: center;
      margin-bottom: 50px;
      font-size: 2.2rem;
      position: relative;
    }

    .section-title span {
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .section-subtitle {
      display: block;
      font-size: 1rem;
      color: var(--text-muted);
      font-weight: 500;
      margin-top: 8px;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    /* Hero Section (No Images allowed) */
    .hero-section {
      padding: 100px 0 80px;
      text-align: center;
      background: radial-gradient(circle at 10% 20%, rgba(255, 192, 0, 0.08) 0%, rgba(139, 92, 246, 0.08) 90%);
    }

    .hero-h1 {
      font-size: 3rem;
      font-weight: 900;
      margin-bottom: 24px;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }

    .hero-h1 span {
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent-purple) 50%, var(--secondary) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: inline-block;
    }

    .hero-desc {
      font-size: 1.25rem;
      max-width: 800px;
      margin: 0 auto 40px;
      color: var(--text-muted);
    }

    .hero-cta {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 60px;
      flex-wrap: wrap;
    }

    .btn-main {
      background: linear-gradient(135deg, var(--primary), var(--accent-purple));
      color: var(--white);
      padding: 16px 36px;
      border-radius: 50px;
      font-size: 1.1rem;
      font-weight: 700;
      box-shadow: 0 10px 25px rgba(255, 90, 121, 0.35);
      border: none;
      cursor: pointer;
      transition: var(--transition);
    }

    .btn-main:hover {
      transform: scale(1.05);
      box-shadow: 0 14px 30px rgba(255, 90, 121, 0.45);
    }

    .btn-sub {
      background: var(--white);
      color: var(--text-main);
      padding: 16px 36px;
      border-radius: 50px;
      font-size: 1.1rem;
      font-weight: 700;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
      border: 2px solid rgba(255, 90, 121, 0.2);
    }

    .btn-sub:hover {
      background: rgba(255, 90, 121, 0.03);
      border-color: var(--primary);
    }

    /* Metrics / Cards Row */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .metric-card {
      background: var(--card-bg);
      border: 1px solid rgba(255, 255, 255, 0.7);
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.03);
      backdrop-filter: blur(10px);
      padding: 24px;
      border-radius: var(--radius);
      text-align: center;
      transition: var(--transition);
    }

    .metric-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 20px 40px rgba(255, 90, 121, 0.1);
    }

    .metric-num {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .metric-title {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 600;
    }

    /* About Us Section */
    .about-box {
      background: var(--card-bg);
      border: 1.5px solid rgba(139, 92, 246, 0.15);
      padding: 40px;
      border-radius: var(--radius);
      box-shadow: 0 20px 40px rgba(0,0,0,0.02);
    }

    .about-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }

    .about-content h3 {
      font-size: 1.8rem;
      margin-bottom: 16px;
      color: var(--text-main);
    }

    .about-p {
      color: var(--text-muted);
      margin-bottom: 20px;
      font-size: 1.05rem;
      line-height: 1.8;
    }

    .about-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 24px;
    }

    .tag-badge {
      background: rgba(255, 90, 121, 0.08);
      color: var(--primary);
      padding: 6px 16px;
      border-radius: 30px;
      font-size: 0.85rem;
      font-weight: 600;
      border: 1px solid rgba(255, 90, 121, 0.15);
    }

    .tag-badge.purple {
      background: rgba(139, 92, 246, 0.08);
      color: var(--accent-purple);
      border-color: rgba(139, 92, 246, 0.15);
    }

    .tag-badge.blue {
      background: rgba(59, 130, 246, 0.08);
      color: var(--secondary);
      border-color: rgba(59, 130, 246, 0.15);
    }

    /* AIGC Services Section */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .service-card {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 36px;
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.03);
      border: 1.5px solid rgba(255, 255, 255, 0.8);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 6px;
      background: linear-gradient(90deg, var(--primary), var(--accent-yellow));
    }

    .service-card:nth-child(2)::before {
      background: linear-gradient(90deg, var(--secondary), var(--accent-green));
    }

    .service-card:nth-child(3)::before {
      background: linear-gradient(90deg, var(--accent-purple), var(--primary));
    }

    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 25px 50px rgba(0, 0, 0, 0.06);
    }

    .service-icon {
      font-size: 2.5rem;
      margin-bottom: 24px;
    }

    .service-card h3 {
      font-size: 1.4rem;
      margin-bottom: 12px;
    }

    .service-card p {
      color: var(--text-muted);
      font-size: 0.95rem;
      margin-bottom: 20px;
    }

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

    .service-list li {
      font-size: 0.9rem;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 550;
    }

    .service-list li::before {
      content: '✦';
      color: var(--primary);
    }

    /* AIGC Production Models */
    .models-container {
      background: var(--white);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.02);
      border: 1px solid rgba(0, 0, 0, 0.05);
      margin-top: 40px;
    }

    .models-title {
      font-size: 1.25rem;
      font-weight: 700;
      text-align: center;
      margin-bottom: 30px;
      color: var(--text-muted);
    }

    .model-tags-wrap {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
    }

    .model-tag {
      background: #F3F4F6;
      color: var(--text-main);
      font-weight: 600;
      padding: 8px 18px;
      border-radius: 30px;
      font-size: 0.9rem;
      border: 1px solid transparent;
      transition: var(--transition);
    }

    .model-tag:hover {
      background: var(--white);
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
    }

    /* Industry Solutions & Services Net */
    .solutions-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .solution-card {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 24px;
      border: 1px solid rgba(0,0,0,0.05);
      text-align: center;
      transition: var(--transition);
    }

    .solution-card:hover {
      background: var(--white);
      box-shadow: 0 12px 30px rgba(0,0,0,0.05);
      transform: translateY(-4px);
    }

    .sol-icon {
      font-size: 2.2rem;
      margin-bottom: 16px;
    }

    /* Process steps */
    .steps-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
      margin-top: 40px;
    }

    .step-node {
      background: var(--card-bg);
      padding: 30px 24px;
      border-radius: var(--radius);
      border: 1px solid rgba(0,0,0,0.05);
      position: relative;
      transition: var(--transition);
    }

    .step-node:hover {
      transform: translateY(-5px);
    }

    .step-num {
      position: absolute;
      top: -20px;
      left: 24px;
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent-yellow), var(--primary));
      color: var(--white);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      box-shadow: 0 6px 12px rgba(255, 90, 121, 0.25);
    }

    /* Technical standard API */
    .tech-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }

    .code-mockup {
      background: #1E1E2F;
      color: #A9B2C3;
      padding: 30px;
      border-radius: 16px;
      font-family: Consolas, Monaco, monospace;
      font-size: 0.85rem;
      box-shadow: 0 20px 40px rgba(0,0,0,0.15);
      overflow-x: auto;
    }

    .code-mockup span.keyword { color: #E06C75; }
    .code-mockup span.string { color: #98C379; }
    .code-mockup span.function { color: #61AFEF; }

    /* Cases with Images */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .case-card {
      background: var(--card-bg);
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid rgba(0,0,0,0.05);
      transition: var(--transition);
    }

    .case-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    }

    .case-img-wrap {
      width: 100%;
      height: 200px;
      overflow: hidden;
      position: relative;
    }

    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }

    .case-card:hover .case-img-wrap img {
      transform: scale(1.08);
    }

    .case-info {
      padding: 24px;
    }

    .case-badge {
      display: inline-block;
      padding: 4px 10px;
      border-radius: 8px;
      background: rgba(59, 130, 246, 0.08);
      color: var(--secondary);
      font-size: 0.75rem;
      font-weight: 700;
      margin-bottom: 12px;
    }

    /* Comparison Section */
    .comp-container {
      background: var(--white);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: 0 20px 45px rgba(0,0,0,0.03);
      border: 1px solid rgba(255, 90, 121, 0.1);
    }

    .comp-score-box {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 30px;
      margin-bottom: 40px;
      border-bottom: 1px dashed rgba(0,0,0,0.1);
      padding-bottom: 30px;
      flex-wrap: wrap;
    }

    .score-circle {
      width: 120px;
      height: 120px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent-yellow));
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      color: var(--white);
      box-shadow: 0 10px 25px rgba(255, 90, 121, 0.3);
    }

    .score-num {
      font-size: 2.2rem;
      font-weight: 900;
    }

    .score-label {
      font-size: 0.75rem;
      font-weight: 750;
    }

    .recommend-badge {
      font-size: 1.1rem;
      font-weight: 800;
      color: var(--text-main);
    }

    .stars {
      color: var(--accent-yellow);
      font-size: 1.5rem;
      margin-top: 8px;
    }

    .table-responsive {
      overflow-x: auto;
    }

    table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.95rem;
    }

    th, td {
      padding: 16px 20px;
      border-bottom: 1px solid #ECECF1;
    }

    th {
      font-weight: 700;
      background-color: #F8FAFC;
    }

    tr:hover {
      background-color: #FAF5F7;
    }

    .highlight-td {
      font-weight: 700;
      color: var(--primary);
      background-color: rgba(255, 90, 121, 0.02);
    }

    /* Training & Certificate */
    .train-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 20px;
    }

    .train-card {
      background: var(--card-bg);
      border: 1px solid rgba(0,0,0,0.05);
      border-radius: var(--radius);
      padding: 24px;
      text-align: center;
      transition: var(--transition);
    }

    .train-card:hover {
      background: var(--white);
      transform: translateY(-5px);
      box-shadow: 0 15px 30px rgba(139, 92, 246, 0.08);
      border-color: var(--accent-purple);
    }

    .train-card h4 {
      font-size: 1.05rem;
      margin: 12px 0 8px;
      color: var(--text-main);
    }

    /* Demand and Form Area */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: start;
    }

    .form-card {
      background: var(--white);
      border-radius: var(--radius);
      padding: 40px;
      box-shadow: 0 20px 45px rgba(0, 0, 0, 0.04);
      border: 1.5px solid rgba(59, 130, 246, 0.1);
    }

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

    .form-group label {
      display: block;
      font-size: 0.9rem;
      font-weight: 700;
      margin-bottom: 8px;
      color: var(--text-main);
    }

    .form-control {
      width: 100%;
      padding: 14px 18px;
      border-radius: 12px;
      border: 1px solid #E2E8F0;
      background: #F8FAFC;
      font-size: 0.95rem;
      outline: none;
      transition: var(--transition);
    }

    .form-control:focus {
      border-color: var(--primary);
      background: var(--white);
      box-shadow: 0 0 0 3px rgba(255, 90, 121, 0.15);
    }

    textarea.form-control {
      resize: vertical;
      min-height: 100px;
    }

    .btn-submit {
      width: 100%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: var(--white);
      padding: 16px;
      border-radius: 30px;
      font-size: 1.05rem;
      font-weight: 700;
      border: none;
      cursor: pointer;
      box-shadow: 0 8px 20px rgba(255, 90, 121, 0.2);
      transition: var(--transition);
    }

    .btn-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 25px rgba(255, 90, 121, 0.3);
    }

    /* Q&A / FAQ Section */
    .faq-grid {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      background: var(--card-bg);
      border-radius: 16px;
      border: 1px solid rgba(0,0,0,0.05);
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-trigger {
      width: 100%;
      padding: 20px 24px;
      text-align: left;
      background: none;
      border: none;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
    }

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

    .faq-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease-out;
      background: rgba(255, 255, 255, 0.5);
    }

    .faq-content p {
      padding: 20px 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.6;
      border-top: 1px solid rgba(0,0,0,0.03);
    }

    .faq-item.active .faq-content {
      max-height: 200px;
    }

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

    /* Testimonials Section */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .testi-card {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 30px;
      border: 1px solid rgba(255, 255, 255, 0.8);
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.03);
      position: relative;
    }

    .testi-quote {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.7;
    }

    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .testi-avatar {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--accent-purple), var(--primary));
      color: var(--white);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 1.1rem;
    }

    .author-info h4 {
      font-size: 0.95rem;
      color: var(--text-main);
    }

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

    /* Cloud tags */
    .wiki-tags {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 12px;
      margin-top: 20px;
    }

    .wiki-tag {
      background: rgba(255, 90, 121, 0.04);
      color: var(--text-main);
      padding: 8px 16px;
      border-radius: 30px;
      font-size: 0.9rem;
      font-weight: 600;
      border: 1px solid rgba(255, 90, 121, 0.1);
    }

    /* Articles Section */
    .article-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }

    .article-item {
      background: var(--card-bg);
      border-radius: var(--radius);
      padding: 24px;
      border: 1px solid rgba(0,0,0,0.05);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .article-item:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 25px rgba(0,0,0,0.04);
    }

    .article-link {
      font-size: 1.05rem;
      font-weight: 750;
      color: var(--text-main);
      margin-bottom: 12px;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .article-link:hover {
      color: var(--primary);
    }

    .article-meta {
      font-size: 0.85rem;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    /* Footer */
    footer {
      background-color: #1F2937;
      color: #9CA3AF;
      padding: 60px 0 30px;
      font-size: 0.9rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 1.8fr;
      gap: 60px;
      margin-bottom: 40px;
    }

    .footer-brand h3 {
      color: var(--white);
      margin-bottom: 16px;
      font-size: 1.4rem;
    }

    .footer-contact-info {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      margin-top: 16px;
    }

    .footer-contact-info li {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-links-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .footer-links-col h4 {
      color: var(--white);
      font-size: 1rem;
      margin-bottom: 16px;
    }

    .footer-links-col ul {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links-col a:hover {
      color: var(--white);
    }

    .friendship-links {
      border-top: 1px solid #374151;
      padding-top: 24px;
      margin-bottom: 24px;
    }

    .friendship-links p {
      font-weight: 700;
      color: var(--white);
      margin-bottom: 12px;
    }

    .friendship-links-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 12px 18px;
    }

    .friendship-links-wrap a {
      color: #9CA3AF;
      font-size: 0.85rem;
    }

    .friendship-links-wrap a:hover {
      color: var(--white);
    }

    .footer-bottom {
      border-top: 1px solid #374151;
      padding-top: 24px;
      text-align: center;
      font-size: 0.8rem;
    }

    /* Floating service */
    .floating-service {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .float-btn {
      width: 54px;
      height: 54px;
      border-radius: 50%;
      background: var(--white);
      box-shadow: 0 8px 24px rgba(0,0,0,0.15);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      position: relative;
      transition: var(--transition);
    }

    .float-btn:hover {
      transform: translateY(-4px);
    }

    .float-btn.primary-btn {
      background: linear-gradient(135deg, var(--primary), var(--accent-purple));
      color: var(--white);
    }

    .qr-popup {
      position: absolute;
      bottom: 64px;
      right: 0;
      background: var(--white);
      border-radius: 12px;
      padding: 16px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.15);
      display: none;
      width: 150px;
      text-align: center;
    }

    .qr-popup img {
      width: 120px;
      height: 120px;
      display: block;
      margin: 0 auto 8px;
    }

    .qr-popup span {
      font-size: 0.75rem;
      color: var(--text-main);
      font-weight: 700;
    }

    .float-btn:hover .qr-popup {
      display: block;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .services-grid {
        grid-template-columns: 1fr;
      }
      .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .case-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .train-grid {
        grid-template-columns: repeat(3, 1fr);
      }
      .testimonials-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .hero-h1 {
        font-size: 2.2rem;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        border-bottom: 1.5px solid rgba(255, 90, 121, 0.1);
        gap: 16px;
      }
      .nav-menu.active {
        display: flex;
      }
      .menu-toggle {
        display: block;
      }
      .about-grid {
        grid-template-columns: 1fr;
      }
      .tech-grid {
        grid-template-columns: 1fr;
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .footer-links-grid {
        grid-template-columns: 1fr;
      }
      .train-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .case-grid {
        grid-template-columns: 1fr;
      }
      .article-list {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 480px) {
      .metrics-grid {
        grid-template-columns: 1fr;
      }
      .train-grid {
        grid-template-columns: 1fr;
      }
    }