:root {
      --primary: #3b82f6;
      --primary-dark: #2563eb;
      --accent: #8b5cf6;
      --bg: #0b0f1a;
      --bg-card: #121826;
      --text: #f1f5f9;
      --text-muted: #94a3b8;
      --border: rgba(148, 163, 184, 0.12);
      --gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    }

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

    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.6;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
    }

    /* ========== Header ========== */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      background: rgba(11, 15, 26, 0.85);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border);
      transition: background 0.3s;
    }

    .header-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
      height: 64px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 20px;
      letter-spacing: -0.02em;
    }

    .logo-icon {
      width: 32px;
      height: 32px;
      background: var(--gradient);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      font-weight: 800;
      color: white;
    }

    .nav {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .nav a {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      transition: color 0.2s;
    }

    .nav a:hover {
      color: var(--text);
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .lang-switch {
      font-size: 13px;
      color: var(--text-muted);
      cursor: pointer;
      padding: 6px 10px;
      border-radius: 6px;
      transition: background 0.2s;
    }

    .lang-switch:hover {
      background: rgba(255,255,255,0.05);
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 20px;
      border-radius: 10px;
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      border: none;
      transition: all 0.2s;
    }

    .btn-primary {
      background: var(--gradient);
      color: white;
      box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
    }

    .btn-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(59, 130, 246, 0.45);
    }

    .btn-outline {
      background: transparent;
      color: var(--text);
      border: 1px solid var(--border);
    }

    .btn-outline:hover {
      background: rgba(255,255,255,0.05);
      border-color: rgba(148, 163, 184, 0.25);
    }

    .btn-lg {
      padding: 14px 28px;
      font-size: 16px;
      border-radius: 12px;
    }

    /* ========== Hero ========== */
    .hero {
      padding: 140px 24px 80px;
      max-width: 1200px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: 52px;
      font-weight: 800;
      line-height: 1.15;
      letter-spacing: -0.03em;
      margin-bottom: 20px;
      background: linear-gradient(135deg, #fff 0%, #c7d2fe 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-content p {
      font-size: 18px;
      color: var(--text-muted);
      margin-bottom: 36px;
      max-width: 480px;
    }

    .hero-btns {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .hero-visual {
      position: relative;
      display: flex;
      justify-content: center;
      align-items: center;
    }

    .phone-mockup {
      width: 280px;
      height: 560px;
      background: linear-gradient(160deg, #1e293b 0%, #0f172a 100%);
      border-radius: 40px;
      border: 3px solid #334155;
      box-shadow: 0 40px 80px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.05);
      position: relative;
      overflow: hidden;
    }

    .phone-notch {
      position: absolute;
      top: 12px;
      left: 50%;
      transform: translateX(-50%);
      width: 100px;
      height: 28px;
      background: #0f172a;
      border-radius: 20px;
      z-index: 2;
    }

    .phone-screen {
      padding: 50px 20px 20px;
      height: 100%;
      display: flex;
      flex-direction: column;
    }

    .wallet-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 24px;
    }

    .wallet-balance {
      font-size: 28px;
      font-weight: 700;
      margin-bottom: 4px;
    }

    .wallet-label {
      font-size: 12px;
      color: var(--text-muted);
    }

    .token-list {
      flex: 1;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .token-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px;
      background: rgba(255,255,255,0.04);
      border-radius: 12px;
    }

    .token-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      font-weight: 700;
      color: white;
    }

    .token-info {
      flex: 1;
    }

    .token-name {
      font-size: 14px;
      font-weight: 600;
    }

    .token-amount {
      font-size: 12px;
      color: var(--text-muted);
    }

    .token-value {
      text-align: right;
      font-size: 14px;
      font-weight: 600;
    }

    .glow {
      position: absolute;
      width: 400px;
      height: 400px;
      background: radial-gradient(circle, rgba(59,130,246,0.25) 0%, transparent 70%);
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      z-index: -1;
      pointer-events: none;
    }

    /* ========== Stats ========== */
    .stats {
      max-width: 1200px;
      margin: 0 auto;
      padding: 40px 24px 80px;
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 20px;
      padding: 40px;
    }

    .stat-item {
      text-align: center;
    }

    .stat-value {
      font-size: 40px;
      font-weight: 800;
      background: var(--gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-bottom: 8px;
    }

    .stat-label {
      font-size: 15px;
      color: var(--text-muted);
    }

    /* ========== Section common ========== */
    .section {
      max-width: 1200px;
      margin: 0 auto;
      padding: 80px 24px;
    }

    .section-header {
      text-align: center;
      margin-bottom: 48px;
    }

    .section-header h2 {
      font-size: 36px;
      font-weight: 800;
      letter-spacing: -0.02em;
      margin-bottom: 12px;
    }

    .section-header p {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 560px;
      margin: 0 auto;
    }

    /* ========== Multi-chain ========== */
    .chains-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
      gap: 16px;
      margin-bottom: 40px;
    }

    .chain-item {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: 20px 12px;
      text-align: center;
      transition: all 0.2s;
      cursor: default;
    }

    .chain-item:hover {
      border-color: rgba(59, 130, 246, 0.4);
      transform: translateY(-2px);
    }

    .chain-icon {
      width: 40px;
      height: 40px;
      margin: 0 auto 10px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      font-weight: 700;
      color: white;
    }

    .chain-name {
      font-size: 13px;
      font-weight: 500;
      color: var(--text-muted);
    }

    .chain-stats {
      display: flex;
      justify-content: center;
      gap: 48px;
      margin-top: 32px;
    }

    .chain-stat {
      text-align: center;
    }

    .chain-stat-value {
      font-size: 28px;
      font-weight: 700;
      color: var(--primary);
    }

    .chain-stat-label {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* ========== Hardware ========== */
    .hardware {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 24px;
      padding: 48px;
    }

    .hardware-content h3 {
      font-size: 28px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .hardware-content p {
      color: var(--text-muted);
      margin-bottom: 24px;
      font-size: 15px;
    }

    .price {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .price span {
      font-size: 14px;
      font-weight: 500;
      color: var(--text-muted);
      margin-left: 8px;
    }

    .hardware-visual {
      display: flex;
      justify-content: center;
    }

    .hw-card {
      width: 220px;
      height: 320px;
      background: linear-gradient(145deg, #1e293b, #0f172a);
      border-radius: 20px;
      border: 1px solid #334155;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 16px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    }

    .hw-logo {
      width: 64px;
      height: 64px;
      background: var(--gradient);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      font-weight: 800;
    }

    .hw-name {
      font-size: 18px;
      font-weight: 600;
    }

    .hw-tag {
      font-size: 12px;
      color: var(--text-muted);
      background: rgba(255,255,255,0.05);
      padding: 4px 12px;
      border-radius: 20px;
    }

    /* ========== Partners ========== */
    .partners-grid {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 24px;
    }

    .partner-item {
      width: 140px;
      height: 60px;
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
      font-weight: 600;
      color: var(--text-muted);
      transition: all 0.2s;
    }

    .partner-item:hover {
      border-color: rgba(59, 130, 246, 0.3);
      color: var(--text);
    }

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

    .contact-card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 28px;
      transition: all 0.2s;
    }

    .contact-card:hover {
      border-color: rgba(59, 130, 246, 0.3);
      transform: translateY(-2px);
    }

    .contact-icon {
      width: 44px;
      height: 44px;
      background: rgba(59, 130, 246, 0.15);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 20px;
      margin-bottom: 16px;
    }

    .contact-card h4 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .contact-card p {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 12px;
    }

    .contact-card a {
      font-size: 13px;
      color: var(--primary);
      font-weight: 500;
    }

    .contact-card a:hover {
      text-decoration: underline;
    }

    /* ========== CTA ========== */
    .cta {
      text-align: center;
      padding: 80px 24px;
      background: linear-gradient(180deg, transparent 0%, rgba(59,130,246,0.08) 100%);
    }

    .cta h2 {
      font-size: 36px;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .cta p {
      color: var(--text-muted);
      margin-bottom: 32px;
    }

    /* ========== Footer ========== */
    .footer {
      border-top: 1px solid var(--border);
      padding: 60px 24px 40px;
    }

    .footer-inner {
      max-width: 1200px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
      gap: 40px;
    }

    .footer-brand p {
      font-size: 13px;
      color: var(--text-muted);
      margin-top: 12px;
      max-width: 260px;
    }

    .footer-col h5 {
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 16px;
      color: var(--text);
    }

    .footer-col a {
      display: block;
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 10px;
      transition: color 0.2s;
    }

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

    .footer-bottom {
      max-width: 1200px;
      margin: 40px auto 0;
      padding-top: 24px;
      border-top: 1px solid var(--border);
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: var(--text-muted);
    }

    /* ========== Responsive ========== */
    @media (max-width: 900px) {
      .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 120px;
      }

      .hero-content h1 {
        font-size: 36px;
      }

      .hero-content p {
        margin-left: auto;
        margin-right: auto;
      }

      .hero-btns {
        justify-content: center;
      }

      .hero-visual {
        order: -1;
      }

      .phone-mockup {
        width: 220px;
        height: 440px;
      }

      .stats-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .hardware {
        grid-template-columns: 1fr;
        text-align: center;
      }

      .contact-grid {
        grid-template-columns: 1fr;
      }

      .footer-inner {
        grid-template-columns: 1fr 1fr;
      }

      .nav {
        display: none;
      }
    }

    @media (max-width: 600px) {
      .footer-inner {
        grid-template-columns: 1fr;
      }

      .chain-stats {
        flex-direction: column;
        gap: 20px;
      }
    }