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

    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
      background: #050816;
      color: white;
      overflow-x: hidden;
    }

    .hero-bg {
      background:
        radial-gradient(circle at top left, rgba(34,211,238,0.15), transparent 30%),
        radial-gradient(circle at top right, rgba(168,85,247,0.15), transparent 30%),
        #050816;
    }

    .glass {
      background: rgba(255,255,255,0.05);
      backdrop-filter: blur(20px);
      border: 1px solid rgba(255,255,255,0.08);
    }

    .gradient-text {
      background: linear-gradient(135deg,#67E8F9,#A855F7);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .grid-line {
      background-image:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
      background-size: 60px 60px;
    }

    .plan-card {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      transition: all 0.3s ease;
    }

    .plan-card .card-content {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .plan-card .card-content > div {
      text-align: center;
    }

    .plan-card ul {
      text-align: left;
      width: 100%;
    }

    .plan-card .card-action {
      margin-top: auto;
      width: 100%;
    }

    .plan-card:hover {
      transform: translateY(-8px);
      border-color: rgba(34,211,238,0.3);
    }

    .plan-card.selected {
      border-color: rgba(34,211,238,0.6);
      box-shadow: 0 0 30px rgba(34,211,238,0.2);
    }

    .plan-card.selected .plan-btn {
      background: linear-gradient(135deg, #22D3EE, #A855F7) !important;
      color: white !important;
      border: none !important;
    }

    .plan-btn {
      transition: all 0.3s ease;
    }

    .plan-btn:hover {
      transform: scale(1.02);
    }

    .popular-badge {
      position: absolute;
      top: -12px;
      right: 20px;
      background: linear-gradient(135deg, #22D3EE, #A855F7);
      color: white;
      padding: 4px 16px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 700;
    }

    .qr-container {
      background: white;
      padding: 20px;
      border-radius: 16px;
      display: inline-block;
    }

    .qr-container img {
      display: block;
    }

    .loading-spinner {
      border: 3px solid rgba(255,255,255,0.1);
      border-top: 3px solid #22D3EE;
      border-radius: 50%;
      width: 40px;
      height: 40px;
      animation: spin 1s linear infinite;
    }

    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }

    .pulse {
      animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.5; }
    }

    /* Countdown Ring */
    .countdown-ring-wrapper {
      position: relative;
      width: 80px;
      height: 80px;
      margin: 0 auto;
    }
    .countdown-ring {
      width: 100%;
      height: 100%;
    }
    .countdown-ring-progress {
      transition: stroke-dashoffset 1s linear;
    }
    .countdown-inner {
      position: absolute;
      inset: 0;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .countdown-time {
      font-size: 16px;
      font-weight: 900;
      background: linear-gradient(135deg, #67E8F9, #A855F7);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    /* Confirm Button with gradient */
    .confirm-btn {
      background: linear-gradient(135deg, #67E8F9, #A855F7);
      color: white;
      border: none;
    }
    .confirm-btn:hover {
      opacity: 0.9;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .plans-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .plans-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px !important;
      }
      .hero-title {
        font-size: 2.5rem !important;
      }
      .plan-card {
        padding: 16px !important;
        border-radius: 16px !important;
      }
      .plan-card h3 {
        font-size: 14px !important;
        margin-bottom: 4px !important;
      }
      .plan-card .text-gray-400.text-sm {
        font-size: 11px !important;
      }
      .plan-card .text-4xl {
        font-size: 22px !important;
      }
      .plan-card .text-gray-500.line-through {
        font-size: 11px !important;
      }
      .plan-card ul {
        margin-bottom: 12px !important;
      }
      .plan-card ul li {
        font-size: 11px !important;
        gap: 4px !important;
        margin-bottom: 4px !important;
      }
      .plan-card ul li i {
        font-size: 10px !important;
      }
      .plan-card .plan-btn {
        padding: 10px !important;
        font-size: 12px !important;
        border-radius: 12px !important;
      }
      .popular-badge {
        top: -8px !important;
        right: 10px !important;
        padding: 2px 10px !important;
        font-size: 10px !important;
      }
      .countdown-ring-wrapper {
        width: 70px;
        height: 70px;
      }
      .countdown-time {
        font-size: 14px !important;
      }
    }

    @media (max-width: 480px) {
      .plans-grid {
        gap: 8px !important;
      }
      .plan-card {
        padding: 12px !important;
        border-radius: 12px !important;
      }
      .plan-card h3 {
        font-size: 12px !important;
      }
      .plan-card .text-gray-400.text-sm {
        font-size: 10px !important;
      }
      .plan-card .text-4xl {
        font-size: 18px !important;
      }
      .plan-card ul li {
        font-size: 10px !important;
      }
      .plan-card .plan-btn {
        padding: 8px !important;
        font-size: 11px !important;
      }
      .hero-title {
        font-size: 2rem !important;
      }
    }