:root {
  --bg: #0c1416;
  --surface: #131c1e;
  --surface-2: #1a2a2e;
  --border: #20343a;
  --text: #eaf6f8;
  --text-dim: #9bb3b9;
  --cyan: #25d0e5;
  --red: #ff3b30;
  --maxw: 880px;
}

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

html { scroll-behavior: smooth; }

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

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

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* Header */
header {
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0;
  background: rgba(12, 20, 22, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  z-index: 10;
}
.nav { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; max-width: var(--maxw); margin: 0 auto; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 18px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.nav-links a { color: var(--text-dim); margin-left: 22px; font-size: 15px; }
.nav-links a:hover { color: var(--text); text-decoration: none; }

/* Hero */
.hero { text-align: center; padding: 84px 0 64px; }
.hero img.appicon { width: 104px; height: 104px; border-radius: 24px; box-shadow: 0 10px 40px rgba(37, 208, 229, 0.18); }
.hero h1 { font-size: clamp(32px, 6vw, 52px); line-height: 1.1; margin: 28px 0 14px; letter-spacing: -0.02em; }
.hero h1 .accent { color: var(--cyan); }
.hero p.tagline { font-size: clamp(17px, 3vw, 21px); color: var(--text-dim); max-width: 620px; margin: 0 auto 32px; }
.cta { display: inline-flex; align-items: center; gap: 10px; background: var(--cyan); color: #04181b; font-weight: 700; padding: 14px 26px; border-radius: 12px; font-size: 16px; }
.cta:hover { text-decoration: none; filter: brightness(1.06); }

/* Sections */
section { padding: 56px 0; border-top: 1px solid var(--border); }
section h2 { font-size: 26px; margin-bottom: 8px; letter-spacing: -0.01em; }
section .lead { color: var(--text-dim); margin-bottom: 28px; max-width: 640px; }

/* Feature grid */
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 22px; }
.card h3 { font-size: 17px; margin-bottom: 6px; display: flex; align-items: center; gap: 9px; }
.card h3 .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); flex: none; }
.card h3 .dot.red { background: var(--red); }
.card p { color: var(--text-dim); font-size: 15px; }

/* Privacy callout */
.privacy-box { background: var(--surface-2); border: 1px solid var(--border); border-radius: 14px; padding: 26px; }
.privacy-box strong { color: var(--text); }

/* Footer */
footer { border-top: 1px solid var(--border); padding: 36px 0 60px; color: var(--text-dim); font-size: 14px; }
.foot-links a { color: var(--text-dim); margin-right: 18px; }
.foot-links { margin-bottom: 14px; }

/* Legal page */
.legal { padding: 56px 0; }
.legal h1 { font-size: 34px; margin-bottom: 6px; }
.legal .updated { color: var(--text-dim); margin-bottom: 32px; }
.legal h2 { font-size: 20px; margin: 32px 0 10px; color: var(--cyan); }
.legal p, .legal li { color: var(--text); margin-bottom: 12px; }
.legal ul { padding-left: 22px; }
.legal li { margin-bottom: 8px; }

@media (max-width: 640px) {
  .grid { grid-template-columns: 1fr; }
  .nav-links a { margin-left: 14px; }
  .hero { padding: 56px 0 44px; }
}