:root[data-theme="light"] {
  --bg: #F4F7FA; --surface: #FFFFFF; --surface-2: #EEF2F6;
  --text: #0E1622; --text-muted: #5A6573;
  --accent: #0066FF; --accent-2: #B14BFF; --accent-soft: rgba(0,102,255,0.10);
  --aurora-1: #0066FF; --aurora-2: #B14BFF; --aurora-3: #00E5C7;
  --border: #DCE3EC;
  --shadow: 0 1px 3px rgba(14,22,34,0.04), 0 8px 24px rgba(0,102,255,0.06);
  --radius: 14px;
}
:root[data-theme="dark"] {
  --bg: #070A14; --surface: #0E1424; --surface-2: #141B30;
  --text: #E6ECF5; --text-muted: #8593AB;
  --accent: #00C2FF; --accent-2: #B14BFF; --accent-soft: rgba(0,194,255,0.14);
  --aurora-1: #00C2FF; --aurora-2: #B14BFF; --aurora-3: #00E5C7;
  --border: #1A2240;
  --shadow: 0 0 0 1px rgba(0,194,255,0.06), 0 0 24px rgba(0,194,255,0.12), 0 8px 32px rgba(177,75,255,0.10);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Inter", sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; font-size: 15px; overflow-x: hidden; transition: background 0.25s, color 0.25s; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.aurora-bg { position: fixed; inset: 0; z-index: -1; background: radial-gradient(ellipse 600px 400px at 20% 0%, var(--aurora-1) 0%, transparent 60%), radial-gradient(ellipse 500px 400px at 80% 20%, var(--aurora-2) 0%, transparent 60%), radial-gradient(ellipse 700px 500px at 50% 100%, var(--aurora-3) 0%, transparent 70%); opacity: 0.18; filter: blur(40px); pointer-events: none; }
:root[data-theme="light"] .aurora-bg { opacity: 0.10; }
:root[data-theme="dark"] .aurora-bg { opacity: 0.32; }
.toggle-panel { position: fixed; top: 18px; right: 18px; z-index: 100; display: flex; gap: 4px; background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 4px; box-shadow: var(--shadow); backdrop-filter: blur(20px); }
.toggle-btn { border: 0; background: transparent; color: var(--text-muted); padding: 6px 12px; border-radius: 999px; font-size: 12px; font-weight: 600; cursor: pointer; transition: all 0.15s; }
.toggle-btn:hover { color: var(--text); }
.toggle-btn.active { background: var(--accent); color: white; }
.site-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid var(--border); padding: 18px 32px; display: flex; align-items: center; justify-content: space-between; background: rgba(255,255,255,0.6); backdrop-filter: blur(20px); }
:root[data-theme="dark"] .site-header { background: rgba(7,10,20,0.6); }
.brand { font-size: 19px; font-weight: 800; letter-spacing: -0.02em; }
.brand .dot { color: var(--accent-2); }
.nav { display: flex; gap: 28px; font-size: 14px; }
.nav a { color: var(--text-muted); font-weight: 500; }
.nav a.active { color: var(--accent); }
.nav a:hover { text-decoration: none; color: var(--text); }
.container { max-width: 1120px; margin: 0 auto; padding: 64px 32px; }
h1 { font-size: 56px; font-weight: 800; letter-spacing: -0.03em; line-height: 1.05; margin-bottom: 24px; }
h1 .grad { background: linear-gradient(135deg, var(--aurora-1), var(--aurora-2), var(--aurora-3)); -webkit-background-clip: text; background-clip: text; color: transparent; }
h2 { font-size: 32px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 12px; }
h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.lead { font-size: 19px; color: var(--text-muted); max-width: 620px; line-height: 1.55; }
p { color: var(--text-muted); margin-bottom: 16px; }
.hero { padding: 80px 0 48px; }
.hero-cta { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 12px 24px; border-radius: 999px; font-weight: 600; font-size: 14px; cursor: pointer; border: 1px solid var(--border); background: var(--surface); color: var(--text); transition: all 0.2s; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: linear-gradient(135deg, var(--aurora-1), var(--aurora-2)); color: white; border-color: transparent; box-shadow: 0 4px 24px rgba(0, 102, 255, 0.25); }
.btn-primary:hover { box-shadow: 0 8px 32px rgba(177, 75, 255, 0.35); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 768px) { .grid-3, .grid-4 { grid-template-columns: 1fr; } h1 { font-size: 40px; } }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); transition: all 0.2s; position: relative; overflow: hidden; }
.card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--accent-soft), transparent); opacity: 0; transition: opacity 0.2s; }
.card:hover { transform: translateY(-2px); border-color: var(--accent-soft); }
.card:hover::before { opacity: 1; }
.card-icon { width: 44px; height: 44px; border-radius: 12px; background: linear-gradient(135deg, var(--aurora-1), var(--aurora-2)); display: grid; place-items: center; font-size: 22px; margin-bottom: 16px; }
.tag { display: inline-block; padding: 4px 10px; border-radius: 999px; font-size: 11px; font-weight: 600; background: var(--accent-soft); color: var(--accent); text-transform: uppercase; letter-spacing: 0.05em; }
.stat { padding: 24px; }
.stat-value { font-size: 36px; font-weight: 800; letter-spacing: -0.02em; }
.stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; text-transform: uppercase; letter-spacing: 0.05em; }
.pricing-tier { padding: 32px; }
.pricing-tier.featured { border-color: var(--accent); border-width: 2px; background: linear-gradient(180deg, var(--surface), var(--surface-2)); }
.price { font-size: 44px; font-weight: 800; letter-spacing: -0.02em; margin: 16px 0 4px; }
.price-period { color: var(--text-muted); font-size: 14px; }
.pricing-features { list-style: none; margin: 24px 0; }
.pricing-features li { padding: 8px 0; color: var(--text-muted); font-size: 14px; display: flex; align-items: center; gap: 8px; }
.pricing-features li::before { content: "✦"; color: var(--accent); }
.orb { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent), 0 0 16px var(--accent); display: inline-block; margin-right: 6px; vertical-align: middle; animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
footer { border-top: 1px solid var(--border); padding: 40px 32px; text-align: center; color: var(--text-muted); font-size: 13px; }