:root {
      --primary: #6c5ce7;
      --primary-dark: #5a4bd1;
      --primary-light: #a29bfe;
      --accent: #00cec9;
      --accent-dark: #00b894;
      --bg-dark: #0a0a1a;
      --bg-light: #f8f9fe;
      --text-dark: #1a1a2e;
      --text-mid: #4a4a6a;
      --text-light: #8888aa;
      --white: #ffffff;
      --border-light: #e8e8f0;
      --shadow-sm: 0 2px 8px rgba(108, 92, 231, 0.08);
      --shadow-md: 0 8px 30px rgba(108, 92, 231, 0.12);
      --shadow-lg: 0 20px 60px rgba(108, 92, 231, 0.15);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --container-width: 1200px;
      --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
      color: var(--text-dark);
      background: var(--bg-light);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    ul {
      list-style: none;
    }
    .container {
      width: 100%;
      max-width: var(--container-width);
      margin: 0 auto;
      padding-left: 20px;
      padding-right: 20px;
    }
    /* Navigation */
    .site-header {
      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(108, 92, 231, 0.08);
      transition: var(--transition);
    }
    .site-header.scrolled {
      box-shadow: 0 4px 20px rgba(108, 92, 231, 0.1);
    }
    .nav-wrap {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 72px;
      gap: 16px;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .brand-logo {
      max-width: 120px;
      height: auto;
    }
    .brand-name {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-dark);
      white-space: nowrap;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .nav-links li {
      margin: 0;
    }
    .nav-links a {
      display: block;
      padding: 8px 14px;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-mid);
      border-radius: 6px;
      transition: var(--transition);
      white-space: nowrap;
      position: relative;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 2px;
      left: 50%;
      width: 0;
      height: 2px;
      background: var(--primary);
      transition: var(--transition);
      transform: translateX(-50%);
      border-radius: 2px;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .nav-links a:hover::after {
      width: 60%;
    }
    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 22px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: var(--white) !important;
      border-radius: 50px;
      font-weight: 600;
      font-size: 0.9rem;
      transition: var(--transition);
      white-space: nowrap;
      flex-shrink: 0;
      box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
    }
    .nav-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(108, 92, 231, 0.4);
    }
    .nav-cta::after {
      display: none !important;
    }
    .menu-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .menu-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-dark);
      border-radius: 2px;
      transition: var(--transition);
    }
    .menu-toggle.active span:nth-child(1) {
      transform: rotate(45deg) translate(5px, 5px);
    }
    .menu-toggle.active span:nth-child(2) {
      opacity: 0;
    }
    .menu-toggle.active span:nth-child(3) {
      transform: rotate(-45deg) translate(5px, -5px);
    }
    .mobile-menu {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      background: var(--white);
      border-bottom: 1px solid var(--border-light);
      box-shadow: 0 10px 30px rgba(0,0,0,0.08);
      padding: 12px 0;
    }
    .mobile-menu.open {
      display: block;
      animation: fadeSlideDown 0.3s ease;
    }
    @keyframes fadeSlideDown {
      from { opacity: 0; transform: translateY(-8px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .mobile-menu a {
      display: block;
      padding: 12px 24px;
      font-size: 0.95rem;
      color: var(--text-mid);
      transition: var(--transition);
    }
    .mobile-menu a:hover {
      background: var(--bg-light);
      color: var(--primary);
    }
    .mobile-menu .nav-cta {
      margin: 8px 24px 4px;
      display: inline-flex;
      justify-content: center;
    }
    /* Hero */
    .hero {
      position: relative;
      background: linear-gradient(135deg, #0a0a1a 0%, #16162e 30%, #1e1a4a 60%, #0a0a1a 100%);
      overflow: hidden;
      padding: 100px 0 90px;
      color: var(--white);
    }
    .hero::before {
      content: '';
      position: absolute;
      top: -50%;
      left: -20%;
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(108, 92, 231, 0.35) 0%, transparent 70%);
      border-radius: 50%;
      animation: floatGlow 8s ease-in-out infinite;
    }
    .hero::after {
      content: '';
      position: absolute;
      bottom: -40%;
      right: -10%;
      width: 500px;
      height: 500px;
      background: radial-gradient(circle, rgba(0, 206, 201, 0.25) 0%, transparent 70%);
      border-radius: 50%;
      animation: floatGlow 10s ease-in-out infinite reverse;
    }
    @keyframes floatGlow {
      0%, 100% { transform: translate(0, 0) scale(1); }
      50% { transform: translate(30px, -20px) scale(1.1); }
    }
    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .hero-content {
      animation: fadeUp 0.8s ease forwards;
    }
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(30px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      background: rgba(108, 92, 231, 0.18);
      border: 1px solid rgba(108, 92, 231, 0.4);
      border-radius: 50px;
      font-size: 0.82rem;
      color: var(--primary-light);
      margin-bottom: 24px;
      letter-spacing: 0.5px;
    }
    .hero-badge .dot {
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(1.3); }
    }
    .hero h1 {
      font-size: 2.8rem;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      letter-spacing: -0.5px;
    }
    .hero h1 .highlight {
      background: linear-gradient(135deg, var(--primary-light), var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .hero-desc {
      font-size: 1.05rem;
      color: rgba(255, 255, 255, 0.75);
      margin-bottom: 32px;
      line-height: 1.8;
      max-width: 520px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      align-items: center;
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 32px;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: var(--white);
      border: none;
      border-radius: 50px;
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      box-shadow: 0 6px 25px rgba(108, 92, 231, 0.4);
      text-decoration: none;
    }
    .btn-primary:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 35px rgba(108, 92, 231, 0.5);
    }
    .btn-outline {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 32px;
      background: transparent;
      color: var(--white);
      border: 1.5px solid rgba(255, 255, 255, 0.3);
      border-radius: 50px;
      font-size: 1rem;
      font-weight: 500;
      cursor: pointer;
      transition: var(--transition);
      text-decoration: none;
    }
    .btn-outline:hover {
      border-color: var(--accent);
      color: var(--accent);
      background: rgba(0, 206, 201, 0.08);
      transform: translateY(-3px);
    }
    .hero-stats {
      display: flex;
      gap: 36px;
      margin-top: 44px;
      flex-wrap: wrap;
    }
    .hero-stat-item {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .hero-stat-value {
      font-size: 1.6rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--primary-light), var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .hero-stat-label {
      font-size: 0.82rem;
      color: rgba(255, 255, 255, 0.55);
    }
    .hero-visual {
      position: relative;
      z-index: 1;
      display: flex;
      justify-content: center;
      align-items: center;
      animation: fadeUp 0.8s 0.2s ease forwards;
      opacity: 0;
    }
    .hero-orb {
      position: relative;
      width: 380px;
      height: 380px;
      max-width: 100%;
    }
    .orb-ring {
      position: absolute;
      inset: 0;
      border-radius: 50%;
      border: 1px solid rgba(108, 92, 231, 0.2);
      animation: spinRing 18s linear infinite;
    }
    .orb-ring:nth-child(2) {
      inset: 30px;
      border-color: rgba(0, 206, 201, 0.15);
      animation-duration: 14s;
      animation-direction: reverse;
    }
    .orb-ring:nth-child(3) {
      inset: 60px;
      border-color: rgba(162, 155, 254, 0.12);
      animation-duration: 22s;
    }
    @keyframes spinRing {
      to { transform: rotate(360deg); }
    }
    .orb-center {
      position: absolute;
      inset: 90px;
      border-radius: 50%;
      background: linear-gradient(135deg, rgba(108, 92, 231, 0.25), rgba(0, 206, 201, 0.15));
      border: 1px solid rgba(108, 92, 231, 0.3);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      gap: 8px;
      backdrop-filter: blur(8px);
      animation: breathe 4s ease-in-out infinite;
    }
    @keyframes breathe {
      0%, 100% { transform: scale(1); box-shadow: 0 0 40px rgba(108, 92, 231, 0.15); }
      50% { transform: scale(1.04); box-shadow: 0 0 70px rgba(0, 206, 201, 0.2); }
    }
    .orb-center-icon {
      font-size: 2.4rem;
      font-weight: 800;
      color: var(--white);
      letter-spacing: -1px;
    }
    .orb-center-sub {
      font-size: 0.75rem;
      color: rgba(255,255,255,0.6);
      letter-spacing: 2px;
    }
    .orb-tag {
      position: absolute;
      padding: 6px 14px;
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.12);
      border-radius: 50px;
      font-size: 0.72rem;
      color: rgba(255,255,255,0.8);
      backdrop-filter: blur(6px);
      animation: tagFloat 5s ease-in-out infinite;
    }
    .orb-tag:nth-child(4) { top: 10px; right: 30px; animation-delay: 0s; }
    .orb-tag:nth-child(5) { bottom: 40px; left: -10px; animation-delay: 1.5s; }
    .orb-tag:nth-child(6) { top: 50%; right: -20px; animation-delay: 3s; }
    .orb-tag:nth-child(7) { bottom: 10px; right: 60px; animation-delay: 4s; }
    @keyframes tagFloat {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-8px); }
    }
    /* Section Common */
    .section {
      padding: 80px 0;
    }
    .section-alt {
      background: var(--white);
    }
    .section-header {
      text-align: center;
      max-width: 700px;
      margin: 0 auto 56px;
    }
    .section-tag {
      display: inline-block;
      padding: 5px 16px;
      background: rgba(108, 92, 231, 0.08);
      color: var(--primary);
      border-radius: 50px;
      font-size: 0.8rem;
      font-weight: 600;
      letter-spacing: 1px;
      margin-bottom: 14px;
    }
    .section-title {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 14px;
      letter-spacing: -0.3px;
      line-height: 1.3;
    }
    .section-desc {
      font-size: 1rem;
      color: var(--text-mid);
      line-height: 1.8;
    }
    /* Reveal Animation */
    .reveal {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }
    /* About / Platform Intro */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .about-content .section-header {
      text-align: left;
      margin: 0 0 28px;
    }
    .about-text {
      font-size: 1rem;
      color: var(--text-mid);
      line-height: 1.9;
      margin-bottom: 24px;
    }
    .about-features {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }
    .about-feature {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      padding: 14px 16px;
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }
    .about-feature:hover {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
    }
    .about-feature-icon {
      width: 32px;
      height: 32px;
      border-radius: 8px;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      color: var(--white);
      font-size: 0.85rem;
      font-weight: 700;
    }
    .about-feature-text {
      font-size: 0.88rem;
      font-weight: 500;
      color: var(--text-dark);
    }
    .about-visual {
      position: relative;
      display: flex;
      justify-content: center;
    }
    .about-image-wrap {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      transition: var(--transition);
    }
    .about-image-wrap:hover {
      transform: translateY(-5px) scale(1.01);
    }
    .about-image-wrap img {
      width: 100%;
      height: auto;
      object-fit: cover;
    }
    /* Data Metrics */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .metric-card {
      text-align: center;
      padding: 32px 20px;
      background: var(--white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .metric-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      transform: scaleX(0);
      transition: var(--transition);
    }
    .metric-card:hover::before {
      transform: scaleX(1);
    }
    .metric-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .metric-value {
      font-size: 2rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-bottom: 6px;
    }
    .metric-label {
      font-size: 0.88rem;
      color: var(--text-mid);
    }
    /* Service Cards */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .service-card {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px 26px;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .service-card::after {
      content: '';
      position: absolute;
      top: -50%;
      right: -50%;
      width: 200px;
      height: 200px;
      background: radial-gradient(circle, rgba(108, 92, 231, 0.04) 0%, transparent 70%);
      border-radius: 50%;
      transition: var(--transition);
    }
    .service-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-6px);
      border-color: rgba(108, 92, 231, 0.2);
    }
    .service-card:hover::after {
      transform: scale(2);
    }
    .service-icon {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-sm);
      background: linear-gradient(135deg, rgba(108, 92, 231, 0.1), rgba(0, 206, 201, 0.1));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
      position: relative;
      z-index: 1;
    }
    .service-card h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 10px;
      position: relative;
      z-index: 1;
    }
    .service-card p {
      font-size: 0.9rem;
      color: var(--text-mid);
      line-height: 1.7;
      position: relative;
      z-index: 1;
    }
    /* Process Steps */
    .process-steps {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      counter-reset: step;
    }
    .process-step {
      text-align: center;
      padding: 32px 20px;
      background: var(--white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      transition: var(--transition);
      position: relative;
    }
    .process-step:hover {
      box-shadow: var(--shadow-sm);
      transform: translateY(-4px);
    }
    .process-num {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: var(--white);
      font-weight: 700;
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 16px;
      box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
    }
    .process-step h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .process-step p {
      font-size: 0.85rem;
      color: var(--text-mid);
      line-height: 1.6;
    }
    /* Comparison Table */
    .comparison-wrap {
      overflow-x: auto;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
    }
    .comparison-table {
      width: 100%;
      border-collapse: collapse;
      background: var(--white);
      min-width: 700px;
    }
    .comparison-table thead th {
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: var(--white);
      padding: 16px 20px;
      font-size: 0.9rem;
      font-weight: 600;
      text-align: left;
      white-space: nowrap;
    }
    .comparison-table tbody td {
      padding: 14px 20px;
      font-size: 0.88rem;
      color: var(--text-mid);
      border-bottom: 1px solid var(--border-light);
      vertical-align: middle;
    }
    .comparison-table tbody tr:last-child td {
      border-bottom: none;
    }
    .comparison-table tbody tr:hover td {
      background: rgba(108, 92, 231, 0.03);
    }
    .comparison-table .highlight-cell {
      color: var(--primary);
      font-weight: 600;
    }
    .rating-stars {
      color: #f5a623;
      font-size: 0.9rem;
      letter-spacing: 1px;
    }
    .score-big {
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--primary);
    }
    /* FAQ */
    .faq-list {
      max-width: 820px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .faq-item {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item:hover {
      border-color: rgba(108, 92, 231, 0.25);
    }
    .faq-question {
      padding: 18px 22px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--text-dark);
      transition: var(--transition);
      user-select: none;
      gap: 16px;
    }
    .faq-question:hover {
      color: var(--primary);
    }
    .faq-arrow {
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--bg-light);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
      font-size: 0.7rem;
      color: var(--text-mid);
      transition: var(--transition);
    }
    .faq-item.open .faq-question {
      color: var(--primary);
      background: rgba(108, 92, 231, 0.03);
    }
    .faq-item.open .faq-arrow {
      background: var(--primary);
      color: var(--white);
      transform: rotate(180deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease, padding 0.3s ease;
      padding: 0 22px;
      font-size: 0.9rem;
      color: var(--text-mid);
      line-height: 1.8;
    }
    .faq-item.open .faq-answer {
      max-height: 300px;
      padding: 0 22px 18px;
    }
    /* Testimonials */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .testimonial-card {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      transition: var(--transition);
      position: relative;
    }
    .testimonial-card::before {
      content: '"';
      position: absolute;
      top: 12px;
      right: 20px;
      font-size: 3rem;
      color: rgba(108, 92, 231, 0.08);
      font-family: Georgia, serif;
      line-height: 1;
    }
    .testimonial-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .testimonial-stars {
      color: #f5a623;
      font-size: 0.85rem;
      letter-spacing: 2px;
      margin-bottom: 12px;
    }
    .testimonial-text {
      font-size: 0.9rem;
      color: var(--text-mid);
      line-height: 1.8;
      margin-bottom: 18px;
      position: relative;
      z-index: 1;
    }
    .testimonial-user {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .testimonial-avatar {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--white);
      font-weight: 700;
      font-size: 0.9rem;
      flex-shrink: 0;
    }
    .testimonial-info strong {
      display: block;
      font-size: 0.88rem;
      color: var(--text-dark);
    }
    .testimonial-info span {
      font-size: 0.78rem;
      color: var(--text-light);
    }
    /* Case Gallery */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-card {
      border-radius: var(--radius-md);
      overflow: hidden;
      position: relative;
      background: var(--white);
      border: 1px solid var(--border-light);
      transition: var(--transition);
    }
    .case-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .case-img {
      width: 100%;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: var(--bg-light);
    }
    .case-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: var(--transition);
    }
    .case-card:hover .case-img img {
      transform: scale(1.05);
    }
    .case-body {
      padding: 20px 20px 22px;
    }
    .case-body h3 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .case-body p {
      font-size: 0.85rem;
      color: var(--text-mid);
      line-height: 1.6;
    }
    /* Articles */
    .articles-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }
    .article-card {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      padding: 22px 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .article-card:hover {
      border-color: rgba(108, 92, 231, 0.25);
      box-shadow: var(--shadow-sm);
      transform: translateX(4px);
    }
    .article-card h3 {
      font-size: 0.95rem;
      font-weight: 600;
      color: var(--text-dark);
      line-height: 1.5;
    }
    .article-card p {
      font-size: 0.82rem;
      color: var(--text-light);
      line-height: 1.6;
    }
    .article-link {
      font-size: 0.82rem;
      color: var(--primary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      margin-top: auto;
    }
    .article-link:hover {
      gap: 8px;
    }
    /* Contact Form */
    .contact-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: start;
    }
    .contact-info h2 {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--text-dark);
      margin-bottom: 16px;
    }
    .contact-info > p {
      font-size: 0.95rem;
      color: var(--text-mid);
      line-height: 1.8;
      margin-bottom: 28px;
    }
    .contact-channels {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .contact-channel {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 16px 18px;
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      transition: var(--transition);
    }
    .contact-channel:hover {
      border-color: var(--primary-light);
      box-shadow: var(--shadow-sm);
    }
    .contact-channel-icon {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: linear-gradient(135deg, rgba(108, 92, 231, 0.1), rgba(0, 206, 201, 0.1));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1rem;
      flex-shrink: 0;
    }
    .contact-channel-text strong {
      display: block;
      font-size: 0.85rem;
      color: var(--text-dark);
      margin-bottom: 2px;
    }
    .contact-channel-text span {
      font-size: 0.82rem;
      color: var(--text-light);
    }
    .contact-qr {
      display: flex;
      align-items: center;
      gap: 16px;
      padding: 16px 18px;
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      margin-top: 16px;
    }
    .contact-qr img {
      width: 80px;
      height: 80px;
      object-fit: cover;
      border-radius: 8px;
    }
    .contact-qr-text strong {
      display: block;
      font-size: 0.85rem;
      color: var(--text-dark);
      margin-bottom: 4px;
    }
    .contact-qr-text span {
      font-size: 0.8rem;
      color: var(--text-light);
    }
    .form-wrap {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }
    .form-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 22px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-group label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-dark);
      margin-bottom: 6px;
    }
    .form-group input,
    .form-group select,
    .form-group textarea {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      color: var(--text-dark);
      background: var(--bg-light);
      transition: var(--transition);
      font-family: inherit;
      outline: none;
    }
    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
      border-color: var(--primary);
      background: var(--white);
      box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.1);
    }
    .form-group textarea {
      resize: vertical;
      min-height: 90px;
    }
    .form-submit {
      width: 100%;
      padding: 14px;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: var(--white);
      border: none;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
    }
    .form-submit:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(108, 92, 231, 0.4);
    }
    .form-submit:active {
      transform: translateY(0);
    }
    /* Token Pricing */
    .pricing-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .pricing-card {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 32px 26px;
      text-align: center;
      transition: var(--transition);
      position: relative;
    }
    .pricing-card.featured {
      border-color: var(--primary);
      box-shadow: 0 8px 30px rgba(108, 92, 231, 0.15);
    }
    .pricing-card.featured::before {
      content: '推荐';
      position: absolute;
      top: 0;
      left: 50%;
      transform: translate(-50%, -50%);
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: var(--white);
      padding: 4px 16px;
      border-radius: 50px;
      font-size: 0.75rem;
      font-weight: 600;
    }
    .pricing-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .pricing-name {
      font-size: 1rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .pricing-price {
      font-size: 2rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .pricing-price small {
      font-size: 0.8rem;
      font-weight: 400;
      color: var(--text-light);
    }
    .pricing-desc {
      font-size: 0.82rem;
      color: var(--text-light);
      margin-bottom: 20px;
    }
    .pricing-features {
      text-align: left;
      display: flex;
      flex-direction: column;
      gap: 10px;
      margin-bottom: 24px;
    }
    .pricing-features li {
      font-size: 0.85rem;
      color: var(--text-mid);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .pricing-features li::before {
      content: '✓';
      color: var(--accent-dark);
      font-weight: 700;
      font-size: 0.85rem;
    }
    /* Service Network / Timeline */
    .network-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .network-item {
      padding: 24px;
      background: var(--white);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-light);
      transition: var(--transition);
    }
    .network-item:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-sm);
    }
    .network-item h3 {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-dark);
      margin-bottom: 8px;
    }
    .network-item p {
      font-size: 0.85rem;
      color: var(--text-mid);
      line-height: 1.7;
    }
    /* Tags */
    .tags-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }
    .tag-item {
      padding: 8px 18px;
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: 50px;
      font-size: 0.82rem;
      color: var(--text-mid);
      transition: var(--transition);
      cursor: default;
    }
    .tag-item:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }
    /* Footer */
    .site-footer {
      background: #0f0f23;
      color: #a0a0c0;
      padding: 56px 0 0;
      margin-top: 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 40px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .footer-brand {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .footer-brand img {
      max-width: 120px;
      height: auto;
      opacity: 0.9;
    }
    .footer-brand p {
      font-size: 0.85rem;
      line-height: 1.8;
      color: #8888aa;
    }
    .footer-col h3 {
      font-size: 0.95rem;
      font-weight: 700;
      color: #ffffff;
      margin-bottom: 16px;
    }
    .footer-col ul {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-col a {
      font-size: 0.85rem;
      color: #a0a0c0;
      transition: var(--transition);
    }
    .footer-col a:hover {
      color: var(--primary-light);
    }
    .footer-links-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .footer-links-cloud a {
      font-size: 0.8rem;
      padding: 4px 12px;
      background: rgba(255,255,255,0.05);
      border-radius: 50px;
      color: #a0a0c0;
      transition: var(--transition);
    }
    .footer-links-cloud a:hover {
      background: rgba(108,92,231,0.2);
      color: var(--primary-light);
    }
    .footer-bottom {
      padding: 20px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-copyright {
      font-size: 0.8rem;
      color: #666688;
    }
    .footer-bottom-links {
      display: flex;
      gap: 20px;
    }
    .footer-bottom-links a {
      font-size: 0.8rem;
      color: #8888aa;
      transition: var(--transition);
    }
    .footer-bottom-links a:hover {
      color: var(--primary-light);
    }
    /* Floating Customer Service */
    .float-service {
      position: fixed;
      right: 24px;
      bottom: 100px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .float-btn {
      width: 52px;
      height: 52px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: var(--white);
      border: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      box-shadow: 0 6px 20px rgba(108, 92, 231, 0.35);
      transition: var(--transition);
      position: relative;
    }
    .float-btn:hover {
      transform: scale(1.1);
      box-shadow: 0 10px 30px rgba(108, 92, 231, 0.5);
    }
    .float-tooltip {
      position: absolute;
      right: 62px;
      top: 50%;
      transform: translateY(-50%);
      background: var(--text-dark);
      color: var(--white);
      padding: 6px 12px;
      border-radius: 6px;
      font-size: 0.75rem;
      white-space: nowrap;
      opacity: 0;
      pointer-events: none;
      transition: var(--transition);
    }
    .float-btn:hover .float-tooltip {
      opacity: 1;
    }
    .back-top {
      position: fixed;
      right: 24px;
      bottom: 36px;
      z-index: 999;
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--white);
      color: var(--primary);
      border: 1px solid var(--border-light);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1rem;
      box-shadow: var(--shadow-md);
      opacity: 0;
      visibility: hidden;
      transition: var(--transition);
    }
    .back-top.show {
      opacity: 1;
      visibility: visible;
    }
    .back-top:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
    }
    /* Responsive */
    @media (max-width: 1100px) {
      .hero h1 { font-size: 2.3rem; }
      .hero-visual { display: none; }
      .hero-grid { grid-template-columns: 1fr; }
      .services-grid { grid-template-columns: repeat(2, 1fr); }
      .process-steps { grid-template-columns: repeat(2, 1fr); }
      .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
      .case-grid { grid-template-columns: repeat(2, 1fr); }
      .pricing-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .metrics-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 900px) {
      .nav-links { display: none; }
      .nav-cta { display: none; }
      .menu-toggle { display: flex; }
      .nav-wrap { min-height: 64px; }
      .about-grid { grid-template-columns: 1fr; gap: 32px; }
      .contact-layout { grid-template-columns: 1fr; gap: 32px; }
      .hero { padding: 70px 0 60px; }
      .hero h1 { font-size: 2rem; }
      .section { padding: 60px 0; }
      .section-title { font-size: 1.6rem; }
      .network-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 640px) {
      .hero h1 { font-size: 1.65rem; }
      .hero-desc { font-size: 0.95rem; }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .btn-primary, .btn-outline { justify-content: center; }
      .services-grid { grid-template-columns: 1fr; }
      .process-steps { grid-template-columns: 1fr; }
      .testimonials-grid { grid-template-columns: 1fr; }
      .case-grid { grid-template-columns: 1fr; }
      .pricing-grid { grid-template-columns: 1fr; }
      .articles-list { grid-template-columns: 1fr; }
      .network-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 28px; }
      .footer-bottom { flex-direction: column; text-align: center; }
      .about-features { grid-template-columns: 1fr; }
      .metrics-grid { grid-template-columns: 1fr 1fr; }
      .hero-stats { gap: 24px; }
      .form-wrap { padding: 24px 20px; }
      .section-header { margin-bottom: 36px; }
      .section { padding: 48px 0; }
      .comparison-table thead th,
      .comparison-table tbody td { padding: 12px 14px; font-size: 0.82rem; }
    }