:root,
html[data-theme="dark"] {
  --brand: #7c6cff;
  --brand-dark: #5850e0;
  --brand-light: rgba(124, 108, 255, 0.14);
  --brand-glow: rgba(124, 108, 255, 0.35);
  --ink: #f4f4f5;
  --ink-muted: #a1a1aa;
  --ink-soft: #71717a;
  --surface: #0a0a10;
  --surface-2: #12121a;
  --surface-3: #1a1a24;
  --border: rgba(255, 255, 255, 0.08);
  --border-soft: rgba(255, 255, 255, 0.05);
  --nav-bg: rgba(10, 10, 16, 0.82);
  --hero-bg: #06060b;
  --card-bg: #12121a;
  --success: #22c55e;
  --danger: #ef4444;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.5);
  --shadow-brand: 0 20px 60px -20px var(--brand-glow);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html[data-theme="light"] {
  --brand: #6d5cff;
  --brand-dark: #4f46e5;
  --brand-light: #ede9fe;
  --brand-glow: rgba(109, 92, 255, 0.35);
  --ink: #0f172a;
  --ink-muted: #64748b;
  --ink-soft: #94a3b8;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --surface-3: #f1f5f9;
  --border: #e2e8f0;
  --border-soft: #f1f5f9;
  --nav-bg: rgba(255, 255, 255, 0.88);
  --hero-bg: #fafaff;
  --card-bg: #ffffff;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 10px 40px -12px rgba(15, 23, 42, 0.18);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
}

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

img { max-width: 100%; display: block; }

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 12px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.btn:active { transform: scale(0.98); }

.btn-primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: #fff;
  padding: 12px 20px;
  box-shadow: 0 8px 24px -8px var(--brand-glow);
}

.btn-primary:hover {
  box-shadow: 0 12px 32px -10px var(--brand-glow);
}

.btn-secondary {
  background: var(--surface);
  color: var(--ink);
  padding: 12px 20px;
  border: 1px solid var(--border);
}

.btn-secondary:hover { background: var(--surface-2); }

.btn-ghost {
  background: transparent;
  color: var(--ink-muted);
  padding: 10px 14px;
}

.btn-ghost:hover { color: var(--ink); background: var(--surface-3); }

.btn-chrome {
  background: var(--surface);
  color: var(--ink);
  padding: 12px 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.btn-chrome:hover { background: var(--surface-2); box-shadow: var(--shadow); }

.theme-toggle {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-2);
  color: var(--ink-muted);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.15s, color 0.15s;
}

.theme-toggle:hover { color: var(--ink); background: var(--surface-3); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .hidden { display: none; }

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 17px;
  box-shadow: 0 6px 18px -6px var(--brand-glow);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-pro {
  background: var(--brand-light);
  color: var(--brand-dark);
}

.badge-free {
  background: var(--surface-3);
  color: var(--ink-muted);
}

.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 14px;
}

.section-sub {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-muted);
  max-width: 620px;
}

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--card-bg);
  color: var(--ink);
  border: 1px solid var(--border);
  padding: 12px 18px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--shadow);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.25s, opacity 0.25s;
  z-index: 9999;
  max-width: min(420px, calc(100% - 32px));
  text-align: center;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}