:root {
  --bg: #ffffff;
  --bg-soft: #f6f7fb;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #55607a;
  --border: #e4e7ef;
  --accent: #4f46e5;
  --accent-2: #0d9488;
  --accent-soft: #eef0ff;
  --radius: 16px;
  --max: 1080px;
  --shadow: 0 1px 2px rgb(15 23 42 / 0.04), 0 8px 24px rgb(15 23 42 / 0.06);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f1a;
    --bg-soft: #111726;
    --surface: #141b2d;
    --text: #e8ebf4;
    --muted: #9aa4bd;
    --border: #232c42;
    --accent: #8b85ff;
    --accent-2: #2dd4bf;
    --accent-soft: #1c2140;
    --shadow: none;
  }
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.02em;
}
.brand:hover { text-decoration: none; }
.brand img { width: 30px; height: 30px; }
.nav { display: flex; gap: 28px; }
.nav a { color: var(--muted); font-size: 15px; font-weight: 500; }
.nav a:hover { color: var(--text); text-decoration: none; }

/* Hero */
.hero { padding: 96px 0 80px; }
.eyebrow {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.hero h1 {
  margin: 20px 0 16px;
  max-width: 14ch;
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.035em;
}
.gradient-text {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p.lead {
  max-width: 560px;
  margin: 0 0 32px;
  color: var(--muted);
  font-size: 20px;
}
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  padding: 0 22px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 15px;
}
.button:hover { text-decoration: none; }
.button.primary { background: var(--text); color: var(--bg); }
.button.primary:hover { opacity: 0.88; }
.button.secondary { border-color: var(--border); color: var(--text); background: var(--surface); }
.button.secondary:hover { border-color: var(--muted); }

/* Sections */
section { padding: 80px 0; }
section.alt { background: var(--bg-soft); border-block: 1px solid var(--border); }
.section-head { max-width: 620px; margin-bottom: 40px; }
.section-head h2 {
  margin: 0 0 12px;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.15;
  letter-spacing: -0.025em;
}
.section-head p { margin: 0; color: var(--muted); font-size: 18px; }

.grid { display: grid; gap: 20px; grid-template-columns: repeat(3, 1fr); }

.card {
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card h3 { margin: 18px 0 8px; font-size: 20px; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
}
.icon svg { width: 24px; height: 24px; }

.principles { display: grid; gap: 32px; grid-template-columns: repeat(3, 1fr); }
.principles h3 { margin: 0 0 6px; font-size: 18px; }
.principles p { margin: 0; color: var(--muted); font-size: 16px; }

/* Products */
.product-group + .product-group { margin-top: 48px; }
.group-title {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.group-title:has(+ .group-desc) { margin-bottom: 4px; }
.group-desc { margin: 0 0 16px; color: var(--muted); font-size: 16px; }
.product-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.product h3 { margin-bottom: 4px; }
.badge {
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.contact-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 40px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
}
.contact-box h2 { margin: 0 0 6px; font-size: 30px; letter-spacing: -0.02em; }
.contact-box p { margin: 0; opacity: 0.9; }
.contact-box .button { background: #fff; color: #111; }

/* Prose pages (privacy, support) */
.prose { max-width: 720px; padding: 64px 0 96px; }
.prose h1 { font-size: clamp(32px, 5vw, 44px); letter-spacing: -0.03em; line-height: 1.1; margin: 0 0 8px; }
.prose .updated { color: var(--muted); margin: 0 0 40px; font-size: 15px; }
.prose h2 { font-size: 22px; margin: 40px 0 10px; letter-spacing: -0.01em; }
.prose p, .prose li { color: var(--text); }
.prose ul { padding-left: 22px; }

/* Footer */
.site-footer { padding: 40px 0; border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; }
.site-footer .container { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; }
.site-footer nav { display: flex; gap: 20px; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--text); }

/* 404 */
.not-found { padding: 120px 0; text-align: center; }
.not-found h1 { font-size: 72px; margin: 0; letter-spacing: -0.04em; }
.not-found p { color: var(--muted); margin: 8px 0 32px; }

@media (max-width: 860px) {
  .grid, .principles { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  .container { padding: 0 16px; }
  .nav { gap: 18px; }
  .nav a.hide-sm { display: none; }
  .hero { padding: 64px 0 56px; }
  .hero p.lead { font-size: 18px; }
  section { padding: 56px 0; }
  .card { padding: 22px; }
  .contact-box { padding: 28px; }
}