:root {
  --bg: #ffffff;
  --bg-alt: #f6f7f9;
  --text: #16181d;
  --text-muted: #5a6170;
  --border: #e3e5e9;
  --accent: #6c5ce7;
  --accent-text: #ffffff;
  --tile-bg: #ffffff;
  --shadow: 0 1px 2px rgba(16,18,22,0.04), 0 8px 24px rgba(16,18,22,0.06);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1115;
    --bg-alt: #15181e;
    --text: #e8eaed;
    --text-muted: #9aa0ab;
    --border: #262a33;
    --accent: #9b8cff;
    --accent-text: #0f1115;
    --tile-bg: #181b22;
    --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.35);
  }
}

:root[data-theme="dark"] {
  --bg: #0f1115;
  --bg-alt: #15181e;
  --text: #e8eaed;
  --text-muted: #9aa0ab;
  --border: #262a33;
  --accent: #9b8cff;
  --accent-text: #0f1115;
  --tile-bg: #181b22;
  --shadow: 0 1px 2px rgba(0,0,0,0.3), 0 8px 24px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

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

.nav {
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
}
.logo .accent { color: var(--accent); }
.logo:hover { text-decoration: none; }

.nav-links { display: flex; gap: 24px; }
.nav-links a { color: var(--text-muted); font-size: 0.95rem; }
.nav-links a:hover { color: var(--text); text-decoration: none; }

.hero {
  max-width: 960px;
  margin: 0 auto;
  padding: 96px 24px 64px;
}

.eyebrow {
  color: var(--accent);
  font-weight: 600;
  margin: 0 0 8px;
  letter-spacing: 0.02em;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  margin: 0 0 4px;
  letter-spacing: -0.02em;
}

.role {
  font-size: 1.3rem;
  color: var(--text-muted);
  margin: 0 0 20px;
  font-weight: 600;
}

.tagline {
  max-width: 560px;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.cta-row { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
}
.btn:hover { text-decoration: none; }

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
}
.btn-primary:hover { opacity: 0.9; }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { background: var(--bg-alt); }

.section {
  max-width: 960px;
  margin: 0 auto;
  padding: 56px 24px;
  border-top: 1px solid var(--border);
}

.section h2 {
  font-size: 1.6rem;
  margin: 0 0 8px;
}

.section-sub {
  color: var(--text-muted);
  margin: 0 0 28px;
}

.about-grid {
  display: grid;
  gap: 16px;
  color: var(--text-muted);
  max-width: 720px;
}

.tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 20px 0 0;
}

.tags li {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.tile-grid, .card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.tile, .card {
  background: var(--tile-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow);
}

.tile h3, .card h3 {
  font-size: 1.02rem;
  margin: 0 0 10px;
  line-height: 1.4;
}

.tile-meta {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  margin: 0;
}

.card p { color: var(--text-muted); font-size: 0.92rem; margin: 0 0 12px; }
.card-link { font-weight: 600; font-size: 0.9rem; }

.section-footer {
  margin-top: 24px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.contact-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 24px 64px;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
}

@media (max-width: 600px) {
  .nav-links { gap: 14px; font-size: 0.85rem; }
  .hero { padding-top: 64px; }
}