* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    :root {
      --primary: #e91e63;
      --primary-deep: #c2185b;
      --primary-light: #fce4ec;
      --gray-bg: #faf9fb;
      --gray-light: #f2f0f3;
      --text-dark: #1a1a2e;
      --text-mid: #4a4a5a;
      --text-light: #7a7a8a;
      --white: #ffffff;
      --shadow-sm: 0 2px 12px rgba(233, 30, 99, 0.08);
      --shadow-md: 0 8px 30px rgba(233, 30, 99, 0.12);
      --shadow-lg: 0 16px 48px rgba(233, 30, 99, 0.16);
      --radius: 16px;
      --radius-sm: 8px;
      --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    }
    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }
    body {
      font-family: var(--font);
      color: var(--text-dark);
      background: var(--white);
      line-height: 1.7;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    ul {
      list-style: none;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .section {
      padding: 80px 0;
    }
    .section-header {
      text-align: center;
      margin-bottom: 48px;
    }
    .section-header .eyebrow {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 2px;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 10px;
      background: var(--primary-light);
      padding: 4px 14px;
      border-radius: 20px;
    }
    .section-header h2 {
      font-size: clamp(26px, 4vw, 38px);
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
    }
    .section-header p {
      font-size: 16px;
      color: var(--text-mid);
      max-width: 680px;
      margin: 0 auto;
    }
    .gradient-text {
      background: linear-gradient(135deg, #e91e63 0%, #ff6090 60%, #ff8fb3 100%);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 32px;
      border-radius: 50px;
      font-size: 15px;
      font-weight: 700;
      cursor: pointer;
      border: none;
      transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
      white-space: nowrap;
    }
    .btn-primary {
      background: linear-gradient(135deg, #e91e63, #ff4d8d);
      color: var(--white);
      box-shadow: 0 6px 20px rgba(233, 30, 99, 0.35);
    }
    .btn-primary:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 10px 28px rgba(233, 30, 99, 0.45);
    }
    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 2px solid var(--primary);
    }
    .btn-outline:hover {
      background: var(--primary);
      color: var(--white);
      transform: translateY(-3px);
      box-shadow: 0 8px 24px rgba(233, 30, 99, 0.3);
    }
    .btn-white {
      background: var(--white);
      color: var(--primary);
      box-shadow: 0 6px 20px rgba(0,0,0,0.12);
    }
    .btn-white:hover {
      transform: translateY(-3px);
      box-shadow: 0 10px 28px rgba(0,0,0,0.18);
    }
    .btn:active {
      transform: translateY(-1px) scale(0.99);
    }

    /* Navbar */
    .navbar {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid rgba(233, 30, 99, 0.1);
      transition: box-shadow 0.3s;
    }
    .navbar.scrolled {
      box-shadow: 0 4px 24px rgba(233, 30, 99, 0.1);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 68px;
      gap: 16px;
    }
    .nav-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .nav-brand .ai-page-logo {
      max-width: 120px;
      height: 40px;
      object-fit: contain;
    }
    .nav-brand .brand-name {
      font-size: 19px;
      font-weight: 800;
      color: var(--primary);
      letter-spacing: 0.5px;
      white-space: nowrap;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      flex-wrap: nowrap;
      overflow-x: auto;
      scrollbar-width: none;
    }
    .nav-links::-webkit-scrollbar {
      display: none;
    }
    .nav-links a {
      display: block;
      padding: 8px 10px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-mid);
      white-space: nowrap;
      border-radius: 6px;
      transition: color 0.25s, background 0.25s;
    }
    .nav-links a:hover {
      color: var(--primary);
      background: var(--primary-light);
    }
    .nav-cta {
      flex-shrink: 0;
    }
    .nav-cta .btn {
      padding: 10px 22px;
      font-size: 14px;
    }
    .mobile-toggle {
      display: none;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 40px;
      height: 40px;
      border: none;
      background: transparent;
      cursor: pointer;
      padding: 8px;
      border-radius: 8px;
    }
    .mobile-toggle span {
      display: block;
      height: 2.5px;
      width: 100%;
      background: var(--primary);
      border-radius: 2px;
      transition: all 0.3s;
    }
    .mobile-toggle.active span:nth-child(1) {
      transform: translateY(7.5px) rotate(45deg);
    }
    .mobile-toggle.active span:nth-child(2) {
      opacity: 0;
    }
    .mobile-toggle.active span:nth-child(3) {
      transform: translateY(-7.5px) rotate(-45deg);
    }

    /* Hero */
    .hero {
      position: relative;
      background: linear-gradient(150deg, #fff5f9 0%, #fce4ec 40%, #fff0f6 100%);
      padding: 90px 0 90px;
      overflow: hidden;
    }
    .hero::before {
      content: '';
      position: absolute;
      top: -120px;
      right: -120px;
      width: 420px;
      height: 420px;
      background: radial-gradient(circle, rgba(233,30,99,0.16) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }
    .hero::after {
      content: '';
      position: absolute;
      bottom: -160px;
      left: -100px;
      width: 380px;
      height: 380px;
      background: radial-gradient(circle, rgba(255,96,144,0.14) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
    }
    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1.05fr 0.95fr;
      gap: 56px;
      align-items: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--white);
      border: 1px solid rgba(233,30,99,0.2);
      padding: 6px 16px;
      border-radius: 50px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 22px;
      box-shadow: var(--shadow-sm);
    }
    .hero-badge .dot {
      width: 8px;
      height: 8px;
      background: var(--primary);
      border-radius: 50%;
      animation: pulse 1.8s infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(1.35); }
    }
    .hero h1 {
      font-size: clamp(30px, 4.4vw, 48px);
      font-weight: 900;
      line-height: 1.2;
      letter-spacing: -1px;
      margin-bottom: 22px;
      color: var(--text-dark);
    }
    .hero p.lead {
      font-size: 17px;
      color: var(--text-mid);
      margin-bottom: 32px;
      max-width: 540px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-bottom: 38px;
    }
    .hero-stats {
      display: flex;
      gap: 36px;
      flex-wrap: wrap;
    }
    .hero-stat .num {
      font-size: 30px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1.1;
    }
    .hero-stat .label {
      font-size: 13px;
      color: var(--text-light);
      margin-top: 2px;
    }
    .hero-visual {
      position: relative;
    }
    .hero-panel {
      background: var(--white);
      border-radius: 24px;
      padding: 32px;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(233,30,99,0.1);
    }
    .hero-panel-title {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-light);
      letter-spacing: 1px;
      text-transform: uppercase;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .hero-panel-title::before {
      content: '';
      width: 20px;
      height: 3px;
      background: var(--primary);
      border-radius: 2px;
    }
    .model-chip-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 26px;
    }
    .model-chip {
      background: var(--gray-light);
      color: var(--text-mid);
      font-size: 13px;
      font-weight: 600;
      padding: 7px 14px;
      border-radius: 8px;
      transition: all 0.25s;
    }
    .model-chip:hover {
      background: var(--primary);
      color: var(--white);
      transform: translateY(-2px);
      box-shadow: 0 6px 14px rgba(233,30,99,0.25);
    }
    .hero-mini-stat {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 14px 0;
      border-top: 1px dashed rgba(233,30,99,0.2);
    }
    .hero-mini-stat:last-child {
      border-bottom: none;
    }
    .hero-mini-stat .k {
      font-size: 14px;
      color: var(--text-mid);
    }
    .hero-mini-stat .v {
      font-size: 16px;
      font-weight: 800;
      color: var(--primary);
    }
    .float-orb {
      position: absolute;
      border-radius: 50%;
      background: linear-gradient(135deg, rgba(233,30,99,0.12), rgba(255,143,179,0.06));
      pointer-events: none;
    }
    .orb1 { width: 90px; height: 90px; top: -30px; right: 30px; }
    .orb2 { width: 50px; height: 50px; bottom: -18px; left: 10px; }

    /* Data strip */
    .data-strip {
      background: linear-gradient(135deg, var(--primary-deep), var(--primary) 60%, #ff6090);
      padding: 48px 0;
      color: var(--white);
    }
    .data-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .data-item .num {
      font-size: clamp(28px, 3.6vw, 42px);
      font-weight: 900;
      line-height: 1.1;
      letter-spacing: -1px;
    }
    .data-item .label {
      font-size: 14px;
      opacity: 0.9;
      margin-top: 6px;
    }

    /* Cards */
    .card-grid {
      display: grid;
      gap: 24px;
    }
    .card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
    .card-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
    .service-card {
      background: var(--white);
      border-radius: var(--radius);
      padding: 32px 28px;
      border: 1px solid rgba(233,30,99,0.1);
      box-shadow: var(--shadow-sm);
      transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1.1);
      position: relative;
      overflow: hidden;
    }
    .service-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), #ff8fb3);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.35s;
    }
    .service-card:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-md);
      border-color: rgba(233,30,99,0.25);
    }
    .service-card:hover::before {
      transform: scaleX(1);
    }
    .service-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      margin-bottom: 18px;
      transition: all 0.3s;
    }
    .service-card:hover .service-icon {
      background: var(--primary);
      color: var(--white);
      transform: rotate(-6deg) scale(1.06);
    }
    .service-card h3 {
      font-size: 19px;
      font-weight: 700;
      margin-bottom: 10px;
      color: var(--text-dark);
    }
    .service-card p {
      font-size: 14.5px;
      color: var(--text-mid);
    }

    /* About / platform */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .about-content h2 {
      font-size: clamp(24px, 3.4vw, 34px);
      font-weight: 800;
      margin-bottom: 18px;
      letter-spacing: -0.5px;
    }
    .about-content p {
      font-size: 15.5px;
      color: var(--text-mid);
      margin-bottom: 16px;
    }
    .about-feature-list {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-top: 26px;
    }
    .about-feature-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14.5px;
      font-weight: 600;
      color: var(--text-dark);
    }
    .about-feature-item .check {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      font-weight: 900;
      flex-shrink: 0;
    }
    .about-media-wrap {
      display: grid;
      grid-template-columns: 1.4fr 1fr;
      gap: 16px;
      align-items: stretch;
    }
    .about-media-wrap .ai-page-image {
      width: 100%;
      height: 100%;
      object-fit: cover;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
    }
    .about-media-col {
      display: grid;
      gap: 16px;
    }
    .about-media-col img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
    }

    /* Process */
    .process-timeline {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 20px;
      position: relative;
    }
    .process-step {
      background: var(--white);
      border-radius: var(--radius);
      padding: 28px 22px;
      border: 1px solid rgba(233,30,99,0.1);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s;
      position: relative;
    }
    .process-step:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }
    .process-step .step-num {
      font-size: 40px;
      font-weight: 900;
      color: var(--primary-light);
      line-height: 1;
      margin-bottom: 10px;
      transition: color 0.3s;
    }
    .process-step:hover .step-num {
      color: var(--primary);
    }
    .process-step h4 {
      font-size: 16.5px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .process-step p {
      font-size: 13.5px;
      color: var(--text-mid);
    }

    /* Compare table */
    .compare-wrap {
      background: var(--white);
      border-radius: var(--radius);
      box-shadow: var(--shadow-md);
      overflow: hidden;
      border: 1px solid rgba(233,30,99,0.1);
    }
    .compare-scroll {
      overflow-x: auto;
    }
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      min-width: 720px;
      font-size: 14.5px;
    }
    .compare-table thead {
      background: linear-gradient(135deg, var(--primary-deep), var(--primary));
      color: var(--white);
    }
    .compare-table th, .compare-table td {
      padding: 16px 20px;
      text-align: left;
      border-bottom: 1px solid var(--gray-light);
    }
    .compare-table th {
      font-weight: 700;
      white-space: nowrap;
    }
    .compare-table td:first-child {
      font-weight: 600;
      color: var(--text-dark);
    }
    .compare-table tbody tr:hover {
      background: #fff8fb;
    }
    .compare-highlight {
      color: var(--primary);
      font-weight: 700;
    }
    .rating-badge {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: var(--primary-light);
      border-radius: 50px;
      padding: 8px 20px;
      font-weight: 800;
      color: var(--primary);
      font-size: 15px;
      margin-top: 12px;
    }
    .stars {
      color: #ffb400;
      letter-spacing: 2px;
      font-size: 16px;
    }

    /* Comments */
    .comment-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .comment-card {
      background: var(--white);
      border-radius: var(--radius);
      padding: 28px;
      border: 1px solid rgba(233,30,99,0.1);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s;
      display: flex;
      flex-direction: column;
    }
    .comment-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }
    .comment-stars {
      color: #ffb400;
      font-size: 15px;
      letter-spacing: 3px;
      margin-bottom: 14px;
    }
    .comment-text {
      font-size: 14.5px;
      color: var(--text-mid);
      flex: 1;
      margin-bottom: 20px;
    }
    .comment-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .comment-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), #ff8fb3);
      color: var(--white);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 16px;
      flex-shrink: 0;
    }
    .comment-user-info .name {
      font-size: 14.5px;
      font-weight: 700;
      color: var(--text-dark);
    }
    .comment-user-info .role {
      font-size: 12.5px;
      color: var(--text-light);
    }

    /* Case */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-card {
      background: var(--white);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      border: 1px solid rgba(233,30,99,0.1);
      transition: all 0.35s;
    }
    .case-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }
    .case-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      transition: transform 0.5s;
    }
    .case-card:hover img {
      transform: scale(1.05);
    }
    .case-card .case-body {
      padding: 22px 24px 26px;
    }
    .case-tag {
      display: inline-block;
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      background: var(--primary-light);
      padding: 3px 12px;
      border-radius: 20px;
      margin-bottom: 10px;
    }
    .case-card h4 {
      font-size: 17px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .case-card p {
      font-size: 13.5px;
      color: var(--text-mid);
    }

    /* Tag cloud */
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
    }
    .tag-cloud .tag {
      display: inline-block;
      padding: 9px 20px;
      border-radius: 50px;
      font-size: 14px;
      font-weight: 600;
      background: var(--gray-light);
      color: var(--text-mid);
      transition: all 0.25s;
      cursor: default;
    }
    .tag-cloud .tag:hover {
      background: var(--primary);
      color: var(--white);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(233,30,99,0.25);
    }

    /* Token price */
    .price-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .price-card {
      background: var(--white);
      border-radius: var(--radius);
      padding: 32px 28px;
      border: 1px solid rgba(233,30,99,0.12);
      box-shadow: var(--shadow-sm);
      text-align: center;
      transition: all 0.3s;
      position: relative;
    }
    .price-card.featured {
      border: 2px solid var(--primary);
      box-shadow: var(--shadow-md);
    }
    .price-card.featured::after {
      content: '推荐';
      position: absolute;
      top: -13px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary);
      color: var(--white);
      font-size: 12px;
      font-weight: 700;
      padding: 3px 16px;
      border-radius: 20px;
    }
    .price-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }
    .price-card h4 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .price-card .price {
      font-size: 38px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1.1;
      margin: 12px 0 4px;
    }
    .price-card .price small {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-light);
    }
    .price-card .desc {
      font-size: 13.5px;
      color: var(--text-light);
      margin-bottom: 18px;
    }
    .price-card ul {
      text-align: left;
      margin-bottom: 24px;
    }
    .price-card ul li {
      font-size: 13.5px;
      color: var(--text-mid);
      padding: 6px 0;
      padding-left: 22px;
      position: relative;
    }
    .price-card ul li::before {
      content: '✓';
      position: absolute;
      left: 0;
      color: var(--primary);
      font-weight: 800;
    }

    /* Network */
    .network-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .network-item {
      background: var(--white);
      border-radius: var(--radius);
      padding: 26px 22px;
      text-align: center;
      border: 1px solid rgba(233,30,99,0.1);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s;
    }
    .network-item:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }
    .network-item .city {
      font-size: 17px;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .network-item .desc {
      font-size: 13px;
      color: var(--text-light);
    }

    /* Articles */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .article-card {
      background: var(--white);
      border-radius: var(--radius);
      padding: 26px;
      border: 1px solid rgba(233,30,99,0.1);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s;
      display: flex;
      flex-direction: column;
    }
    .article-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
    }
    .article-card .article-meta {
      font-size: 12.5px;
      color: var(--text-light);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .article-card h4 {
      font-size: 16.5px;
      font-weight: 700;
      margin-bottom: 10px;
      line-height: 1.5;
      flex: 1;
    }
    .article-card .read-more {
      font-size: 13.5px;
      font-weight: 700;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: gap 0.25s;
    }
    .article-card:hover .read-more {
      gap: 12px;
    }

    /* FAQ */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--white);
      border-radius: var(--radius-sm);
      border: 1px solid rgba(233,30,99,0.12);
      margin-bottom: 14px;
      overflow: hidden;
      transition: box-shadow 0.3s;
    }
    .faq-item.active {
      box-shadow: var(--shadow-sm);
      border-color: rgba(233,30,99,0.3);
    }
    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 20px 24px;
      cursor: pointer;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-dark);
      user-select: none;
      transition: color 0.25s;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-icon {
      width: 26px;
      height: 26px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      font-weight: 700;
      flex-shrink: 0;
      transition: all 0.3s;
    }
    .faq-item.active .faq-icon {
      background: var(--primary);
      color: var(--white);
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      padding: 0 24px;
    }
    .faq-item.active .faq-answer {
      padding-bottom: 20px;
    }
    .faq-answer p {
      font-size: 14.5px;
      color: var(--text-mid);
      line-height: 1.75;
    }

    /* Form */
    .form-section {
      background: linear-gradient(150deg, #fff5f9 0%, #fce4ec 100%);
    }
    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 48px;
      align-items: start;
    }
    .form-info h2 {
      font-size: clamp(24px, 3.4vw, 34px);
      font-weight: 800;
      margin-bottom: 16px;
    }
    .form-info p {
      font-size: 15px;
      color: var(--text-mid);
      margin-bottom: 26px;
    }
    .contact-list {
      display: grid;
      gap: 16px;
    }
    .contact-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
      background: var(--white);
      border-radius: var(--radius-sm);
      padding: 16px 20px;
      box-shadow: var(--shadow-sm);
    }
    .contact-item .c-icon {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      flex-shrink: 0;
    }
    .contact-item .c-label {
      font-size: 12.5px;
      color: var(--text-light);
      margin-bottom: 2px;
    }
    .contact-item .c-value {
      font-size: 14.5px;
      font-weight: 600;
      color: var(--text-dark);
      word-break: break-all;
    }
    .qr-wrap {
      display: flex;
      align-items: center;
      gap: 16px;
      background: var(--white);
      border-radius: var(--radius-sm);
      padding: 16px 20px;
      box-shadow: var(--shadow-sm);
    }
    .qr-wrap img {
      width: 90px;
      height: 90px;
      object-fit: cover;
      border-radius: 8px;
      border: 1px solid var(--gray-light);
    }
    .qr-wrap .qr-text .c-label {
      font-size: 12.5px;
      color: var(--text-light);
    }
    .qr-wrap .qr-text .c-value {
      font-size: 14.5px;
      font-weight: 600;
      color: var(--text-dark);
    }
    .form-card {
      background: var(--white);
      border-radius: var(--radius);
      padding: 40px 36px;
      box-shadow: var(--shadow-lg);
      border: 1px solid rgba(233,30,99,0.1);
    }
    .form-card h3 {
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 6px;
    }
    .form-card .form-sub {
      font-size: 14px;
      color: var(--text-light);
      margin-bottom: 26px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 13.5px;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 7px;
    }
    .form-group label .req {
      color: var(--primary);
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 12px 16px;
      border-radius: var(--radius-sm);
      border: 1.5px solid #e6e2e8;
      font-size: 14.5px;
      font-family: var(--font);
      color: var(--text-dark);
      background: var(--white);
      transition: border-color 0.25s, box-shadow 0.25s;
      outline: none;
    }
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(233,30,99,0.1);
    }
    .form-group textarea {
      resize: vertical;
      min-height: 100px;
    }
    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .form-submit {
      width: 100%;
      margin-top: 6px;
    }
    .form-note {
      font-size: 12.5px;
      color: var(--text-light);
      margin-top: 12px;
      text-align: center;
    }

    /* Footer */
    .footer {
      background: #1a0a12;
      color: rgba(255,255,255,0.7);
      padding: 64px 0 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
      gap: 40px;
      padding-bottom: 48px;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .footer-brand .ai-page-logo {
      max-width: 130px;
      height: 42px;
      object-fit: contain;
      margin-bottom: 16px;
      
      opacity: 0.95;
    }
    .footer-brand p {
      font-size: 13.5px;
      line-height: 1.8;
      margin-bottom: 16px;
    }
    .footer-social {
      display: flex;
      gap: 10px;
    }
    .footer-social a {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      background: rgba(255,255,255,0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      color: rgba(255,255,255,0.8);
      transition: all 0.25s;
    }
    .footer-social a:hover {
      background: var(--primary);
      color: var(--white);
      transform: translateY(-3px);
    }
    .footer h4 {
      color: var(--white);
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 18px;
    }
    .footer-links {
      display: grid;
      gap: 10px;
    }
    .footer-links a {
      font-size: 13.5px;
      color: rgba(255,255,255,0.65);
      transition: color 0.25s;
    }
    .footer-links a:hover {
      color: #ff8fb3;
    }
    .footer-contact-item {
      font-size: 13.5px;
      margin-bottom: 10px;
      display: flex;
      gap: 8px;
    }
    .footer-contact-item .fl {
      color: rgba(255,255,255,0.45);
      flex-shrink: 0;
    }
    .footer-bottom {
      padding: 24px 0;
      text-align: center;
      font-size: 12.5px;
      color: rgba(255,255,255,0.4);
    }

    /* Float service */
    .float-service {
      position: fixed;
      right: 24px;
      bottom: 90px;
      z-index: 999;
    }
    .float-service-btn {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), #ff6090);
      color: var(--white);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      box-shadow: 0 8px 24px rgba(233,30,99,0.4);
      cursor: pointer;
      border: none;
      transition: all 0.3s;
      animation: floatBob 3s ease-in-out infinite;
    }
    @keyframes floatBob {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-6px); }
    }
    .float-service-btn:hover {
      transform: scale(1.08);
      box-shadow: 0 12px 32px rgba(233,30,99,0.55);
    }
    .float-panel {
      position: absolute;
      right: 0;
      bottom: 70px;
      width: 240px;
      background: var(--white);
      border-radius: var(--radius);
      box-shadow: var(--shadow-lg);
      padding: 20px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: all 0.3s;
      border: 1px solid rgba(233,30,99,0.12);
    }
    .float-panel.show {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }
    .float-panel h5 {
      font-size: 14px;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 12px;
      text-align: center;
    }
    .float-panel img {
      width: 140px;
      height: 140px;
      object-fit: cover;
      border-radius: 10px;
      margin: 0 auto 12px;
      border: 1px solid var(--gray-light);
    }
    .float-panel p {
      font-size: 12.5px;
      color: var(--text-light);
      text-align: center;
      line-height: 1.6;
    }
    .back-top {
      position: fixed;
      right: 24px;
      bottom: 24px;
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: var(--white);
      color: var(--primary);
      border: 1px solid rgba(233,30,99,0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      cursor: pointer;
      box-shadow: var(--shadow-sm);
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: all 0.3s;
      z-index: 999;
    }
    .back-top.show {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }
    .back-top:hover {
      background: var(--primary);
      color: var(--white);
    }

    /* Reveal animation */
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.25, 0.8, 0.25, 1);
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .hero-visual {
        order: -1;
      }
      .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .card-grid.cols-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .comment-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .case-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .price-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin: 0 auto;
      }
      .network-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .article-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .form-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
      }
    }
    @media (max-width: 860px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        align-items: stretch;
        padding: 12px 20px 20px;
        box-shadow: 0 12px 30px rgba(233,30,99,0.15);
        border-bottom: 1px solid rgba(233,30,99,0.1);
        max-height: calc(100vh - 68px);
        overflow-y: auto;
      }
      .nav-links.open {
        display: flex;
      }
      .nav-links a {
        padding: 11px 12px;
        font-size: 15px;
      }
      .mobile-toggle {
        display: flex;
      }
      .nav-cta {
        display: none;
      }
      .data-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
      }
      .about-media-wrap {
        grid-template-columns: 1fr;
      }
      .about-media-col {
        grid-template-columns: 1fr 1fr;
      }
      .about-media-wrap .ai-page-image {
        height: 220px;
      }
    }
    @media (max-width: 640px) {
      .section {
        padding: 56px 0;
      }
      .container {
        padding: 0 18px;
      }
      .hero {
        padding: 60px 0 64px;
      }
      .hero-panel {
        padding: 24px 20px;
      }
      .hero-actions {
        flex-direction: column;
        gap: 12px;
      }
      .hero-actions .btn {
        width: 100%;
      }
      .hero-stats {
        gap: 24px;
      }
      .card-grid.cols-3,
      .card-grid.cols-2,
      .comment-grid,
      .case-grid,
      .article-grid,
      .network-grid {
        grid-template-columns: 1fr;
      }
      .process-timeline {
        grid-template-columns: 1fr;
      }
      .form-row {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .float-service {
        right: 16px;
        bottom: 80px;
      }
      .float-service-btn {
        width: 50px;
        height: 50px;
        font-size: 21px;
      }
      .back-top {
        right: 16px;
        bottom: 20px;
        width: 44px;
        height: 44px;
      }
      .form-card {
        padding: 28px 22px;
      }
      .about-media-col {
        grid-template-columns: 1fr;
      }
      .model-chip-grid {
        gap: 8px;
      }
      .model-chip {
        font-size: 12px;
        padding: 6px 11px;
      }
      .qr-wrap {
        flex-direction: column;
        text-align: center;
      }
    }
    @media (prefers-reduced-motion: reduce) {
      * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
      }
      .reveal {
        opacity: 1;
        transform: none;
      }
    }