:root {
  color-scheme: light dark;
  --bg: #0f1419;
  --surface: #1a222c;
  --text: #e8eef5;
  --muted: #9aabbc;
  --accent: #5bb8ff;
  --accent-strong: #2f9aef;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --radius: 16px;
  --max: 920px;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fb;
    --surface: #ffffff;
    --text: #15202b;
    --muted: #5b6b7c;
    --accent: #1f7fd1;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(91, 184, 255, 0.16), transparent 32%),
    radial-gradient(circle at top right, rgba(120, 90, 255, 0.12), transparent 28%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

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

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav ul {
  display: flex;
  gap: 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav a { color: var(--muted); }
.nav a:hover, .logo:hover { color: var(--text); text-decoration: none; }

main { max-width: var(--max); margin: 0 auto; padding: 2rem 1.25rem 4rem; }

.hero {
  padding: 4rem 0 3rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 2.5rem;
}

.hero-photo {
  margin: 0;
  width: 300px;
}

.hero-photo img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: 50% 30%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

@media (max-width: 720px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .hero-photo {
    order: -1;
    width: min(260px, 70vw);
  }
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0 0 0.75rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin: 0 0 1rem;
}

.tagline {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 36rem;
  margin: 0 0 1.75rem;
}

.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.1rem;
  border-radius: 999px;
  background: var(--accent-strong);
  color: white;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}

.button:hover { filter: brightness(1.05); text-decoration: none; }

.button-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.section { padding: 2.5rem 0; border-top: 1px solid var(--border); }
.section h2 { margin: 0 0 1rem; letter-spacing: -0.03em; }
.section p { color: var(--muted); max-width: 40rem; }

.card-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.card h3 { margin: 0 0 0.5rem; }
.card p { margin: 0; }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 1.25rem 2.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 640px) {
  .nav ul { gap: 0.75rem; font-size: 0.95rem; }
  .hero { padding-top: 2.5rem; }
}

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
  color: var(--muted);
  max-width: 40rem;
}
.contact-list strong { color: var(--text); margin-right: 0.35rem; }
.section p + p { margin-top: 1rem; }

.blog-main { max-width: var(--max); margin: 0 auto; padding: 2rem 1.25rem 4rem; }
.blog-hero { padding-bottom: 1.5rem; }
.blog-hero .meta, .blog-meta { color: var(--muted); font-size: 0.95rem; }
.blog-list { display: grid; gap: 1.25rem; border-top: none; padding-top: 0; }
.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.4rem;
  box-shadow: var(--shadow);
}
.blog-card.featured { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.blog-kicker {
  margin: 0 0 0.45rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
  color: var(--accent);
}
.blog-card h2 { margin: 0 0 0.45rem; font-size: 1.25rem; letter-spacing: -0.02em; }
.blog-card h2 a { color: var(--text); text-decoration: none; }
.blog-card h2 a:hover { color: var(--accent); }
.blog-card p { color: var(--muted); }
.text-link { font-weight: 600; }
.disclaimer p { font-size: 0.9rem; color: var(--muted); max-width: 40rem; }
.nav a[aria-current="page"] { color: var(--text); font-weight: 600; }