:root {
  --bg: #f4f6fa;
  --surface: #ffffff;
  --surface-2: #eef2f8;
  --text: #0f172a;
  --muted: #5b6577;
  --accent: #2557d6;
  --accent-hover: #1d47b3;
  --accent-soft: #e3ebfc;
  --border: #dfe4ec;
  --shadow: 0 1px 2px rgb(15 23 42 / .05), 0 8px 24px rgb(15 23 42 / .06);
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f17;
    --surface: #131a26;
    --surface-2: #1a2333;
    --text: #e7ecf3;
    --muted: #95a1b4;
    --accent: #6b9bff;
    --accent-hover: #8db2ff;
    --accent-soft: #1b2a47;
    --border: #243045;
    --shadow: 0 1px 2px rgb(0 0 0 / .3), 0 8px 24px rgb(0 0 0 / .25);
  }
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header .inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: .85rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: .02em;
  color: var(--text);
}
.brand:hover { color: var(--text); }

.brand-mark {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #7c4dff);
  color: #fff;
  font-size: .9rem;
}

.site-header nav { display: flex; gap: .25rem; }
.site-header nav a {
  padding: .45rem .8rem;
  border-radius: 8px;
  color: var(--muted);
  font-weight: 500;
  font-size: .95rem;
  transition: background .15s, color .15s;
}
.site-header nav a:hover { background: var(--surface-2); color: var(--text); }

/* Layout */
.container {
  flex: 1;
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 3rem 1rem 4rem;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1.25rem, 5vw, 3.5rem);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 6px);
  background:
    radial-gradient(900px 300px at 100% 0%, var(--accent-soft), transparent 60%),
    var(--surface);
  box-shadow: var(--shadow);
}

.eyebrow {
  display: inline-block;
  margin-bottom: 1rem;
  padding: .25rem .7rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 .75rem;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -.02em;
}

.hero p {
  max-width: 560px;
  margin: 0 0 2rem;
  color: var(--muted);
  font-size: 1.1rem;
}

.actions { display: flex; flex-wrap: wrap; gap: .75rem; }

.button {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .7rem 1.25rem;
  border: 1px solid transparent;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: .95rem;
  transition: background .15s, transform .15s;
}
.button:hover { background: var(--accent-hover); color: #fff; transform: translateY(-1px); }

.button.secondary {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text);
}
.button.secondary:hover { background: var(--surface-2); color: var(--text); }

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.card {
  display: block;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent); color: var(--text); transform: translateY(-2px); }

.card h2 { margin: 0 0 .35rem; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); font-size: .95rem; }
.card .arrow { display: inline-block; margin-top: 1rem; color: var(--accent); font-weight: 600; font-size: .9rem; }

/* Footer */
.site-footer {
  padding: 1.5rem 1rem;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: .85rem;
}

@media (max-width: 560px) {
  .site-header nav a { padding: .4rem .55rem; font-size: .9rem; }
  .actions .button { flex: 1; justify-content: center; }
}