/* --- Base & Theme --- */
:root {
  --bg: #0b1020;
  --bg-2: #0e172a;
  --text: #e6e8ee;
  --muted: #b5bed4;
  --brand: #6ad3ff;
  --brand-2: #a78bfa;
  --card: #0f1a31cc;
  --border: #24314f;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f8fafc;
    --bg-2: #eef2ff;
    --text: #0b1020;
    --muted: #3c4258;
    --card: #ffffffcc;
    --border: #e2e8f0;
    --shadow: 0 10px 25px rgba(2,6,23,.08);
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Inter, Helvetica, Arial, Noto Sans, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 80% -10%, rgba(106,211,255,.25), transparent 60%),
              radial-gradient(900px 500px at -10% 10%, rgba(167,139,250,.22), transparent 60%),
              linear-gradient(180deg, var(--bg), var(--bg-2));
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

.wrap { max-width: 1100px; margin: 0 auto; padding: 24px; }

/* --- Header --- */
header { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: inline-flex; align-items: center; gap: 14px; text-decoration: none; }
.brand .wordmark { font-weight: 700; font-size: 20px; letter-spacing: .2px; color: var(--text); }
nav { display: flex; gap: 18px; align-items: center; }
nav a { color: var(--muted); font-weight: 600; }
nav a:hover { color: var(--text); }

/* --- Hero --- */
.hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: center; padding: 40px 0 24px; }
.hero h1 { font-size: clamp(32px, 5vw, 54px); line-height: 1.1; margin: 0 0 12px; }
.hero p { margin: 0; color: var(--muted); font-size: clamp(16px, 1.4vw, 18px); }
.cta { margin-top: 22px; display: flex; gap: 12px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 12px 16px; border-radius: 12px; border: 1px solid var(--border); background: var(--card); color: var(--text); box-shadow: var(--shadow); }
.btn:hover { transform: translateY(-1px); transition: transform .15s ease; text-decoration: none; }
.btn.primary { background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #0b1020; border-color: transparent; }

/* --- Card grid --- */
.grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 16px; margin-top: 40px; }
.card { grid-column: span 12; background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 20px; box-shadow: var(--shadow); }
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); }
@media (min-width: 740px) { .card { grid-column: span 6; } }
@media (min-width: 980px) { .card { grid-column: span 4; } }

/* --- Footer --- */
footer { margin: 56px 0 16px; color: var(--muted); font-size: 14px; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }

/* --- Logo wrapper --- */
.logo-wrap { display: grid; place-items: center; }
.logo { width: min(420px, 90%); height: auto; filter: drop-shadow(0 10px 20px rgba(0,0,0,.25)); }

/* --- Utilities --- */
.muted { color: var(--muted); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }