*, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      background: #050914;
      color: #e5e7eb;
      font-family: 'Noto Sans SC', 'Inter', system-ui, sans-serif;
      min-height: 100vh;
      overflow-x: hidden;
    }
    /* Background gradient */
    .bg-hero-gradient {
      background:
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0,240,255,0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 20%, rgba(189,0,255,0.06) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 20% 80%, rgba(0,240,255,0.04) 0%, transparent 50%),
        linear-gradient(180deg, #050914 0%, #0A1128 50%, #050914 100%);
    }
    /* Glass card */
    .glass-card {
      background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.06);
      backdrop-filter: blur(12px);
      border-radius: 16px;
    }
    /* Tier cards */
    .tier-card {
      background: rgba(255,255,255,0.02);
      border: 1px solid rgba(255,255,255,0.06);
      border-radius: 16px;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
    }
    .tier-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 2px;
    }
    .tier-creator::before {
      background: linear-gradient(90deg, #BD00FF, #00F0FF, #BD00FF);
    }
    .tier-maker::before {
      background: linear-gradient(90deg, #00F0FF, #3B82F6, #00F0FF);
    }
    .tier-eco::before {
      background: linear-gradient(90deg, #10B981, #06B6D4, #10B981);
    }
    .tier-card:hover {
      border-color: rgba(255,255,255,0.12);
      transform: translateY(-2px);
      box-shadow: 0 8px 32px rgba(0,0,0,0.3);
    }
    /* Benefit item */
    .benefit-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255,255,255,0.04);
    }
    .benefit-item:last-child { border-bottom: none; }
    /* Glow text */
    .glow-cyan { text-shadow: 0 0 20px rgba(0,240,255,0.4); }
    .glow-purple { text-shadow: 0 0 20px rgba(189,0,255,0.4); }
    .glow-amber { text-shadow: 0 0 20px rgba(245,158,11,0.4); }
    /* Advantage card */
    .advantage-card {
      background: rgba(255,255,255,0.02);
      border: 1px solid rgba(255,255,255,0.06);
      border-radius: 12px;
      padding: 20px 16px;
      text-align: center;
      transition: all 0.3s ease;
    }
    .advantage-card:hover {
      border-color: rgba(0,240,255,0.2);
      background: rgba(0,240,255,0.03);
    }
    /* CTA button */
    .cta-btn {
      background: linear-gradient(135deg, #BD00FF 0%, #00F0FF 100%);
      color: #fff;
      font-weight: 600;
      padding: 14px 36px;
      border-radius: 50px;
      font-size: 16px;
      border: none;
      cursor: pointer;
      transition: all 0.3s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .cta-btn:hover {
      transform: scale(1.03);
      box-shadow: 0 0 24px rgba(189,0,255,0.3), 0 0 48px rgba(0,240,255,0.2);
    }
    .cta-btn:active { transform: scale(0.97); }
    /* Back button */
    .back-btn {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #9ca3af;
      font-size: 14px;
      cursor: pointer;
      transition: color 0.2s;
      background: none;
      border: none;
      padding: 4px 0;
    }
    .back-btn:hover { color: #e5e7eb; }
    /* Badge */
    .price-badge {
      display: inline-flex;
      align-items: baseline;
      gap: 2px;
      padding: 4px 14px;
      border-radius: 20px;
      font-weight: 700;
      font-size: 20px;
    }
    .price-badge span { font-size: 13px; font-weight: 400; }
    /* Section fade in */
    .section-fade {
      opacity: 0;
      transform: translateY(20px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .section-fade.visible {
      opacity: 1;
      transform: translateY(0);
    }
    /* Compare highlight */
    .compare-highlight {
      background: linear-gradient(135deg, rgba(189,0,255,0.1), rgba(0,240,255,0.1));
      border: 1px solid rgba(189,0,255,0.2);
      border-radius: 12px;
      padding: 16px;
    }