:root {
  --bg: #f6f8fc;
  --surface: rgba(255,255,255,0.78);
  --surface-strong: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --line: rgba(15, 23, 42, 0.1);
  --accent: #0ea5e9;
  --accent-2: #4f46e5;
  --shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

body.dark {
  --bg: #020617;
  --surface: rgba(255,255,255,0.05);
  --surface-strong: #0b1220;
  --text: #f8fafc;
  --muted: #cbd5e1;
  --line: rgba(255,255,255,0.1);
  --shadow: 0 18px 40px rgba(2, 6, 23, 0.45);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  background:
    radial-gradient(circle at top, rgba(14,165,233,.16), transparent 26%),
    radial-gradient(circle at top right, rgba(79,70,229,.12), transparent 20%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
.container { width: min(1120px, calc(100% - 2rem)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 40;
  backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--line);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 78px; gap: 1rem; }
.brand { font-weight: 700; letter-spacing: -0.03em; }
.nav { display: flex; align-items: center; gap: 1.1rem; }
.nav a { color: var(--muted); }
.nav a.active, .nav a:hover { color: var(--text); }
.theme-toggle, .menu-toggle {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  border-radius: 16px;
  height: 42px; min-width: 42px; cursor: pointer;
}
.menu-toggle { display: none; }
.hero { padding: 5rem 0 2rem; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 3rem; align-items: center; }
.eyebrow { text-transform: uppercase; letter-spacing: .22em; font-size: .76rem; font-weight: 700; color: var(--accent); }
.hero h1, .section-heading h1 { font-size: clamp(2.5rem, 6vw, 4.8rem); line-height: 1.02; letter-spacing: -0.05em; margin: .8rem 0 1.2rem; }
.hero .lead, .section-heading p { font-size: 1.07rem; color: var(--muted); max-width: 760px; }
.hero-actions, .cta-actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .95rem 1.25rem; border-radius: 18px; font-weight: 600;
  border: 1px solid transparent;
}
.btn-primary { background: var(--text); color: var(--bg); }
.btn-secondary { border-color: var(--line); background: transparent; }
.pill-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .85rem; margin-top: 2rem; }
.pill-grid span, .chip-row span {
  border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: .7rem .9rem; font-size: .9rem;
}
.card {
  background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow);
  border-radius: 28px; padding: 1.6rem;
}
.hero-card { padding: 1.4rem; }
.portrait-block {
  min-height: 430px; border-radius: 24px; padding: 2rem; display: flex; align-items: end;
  background: linear-gradient(135deg, rgba(14,165,233,.18), rgba(79,70,229,.08), transparent);
  border: 1px solid var(--line);
}
.small-label, .card-tag { color: var(--muted); font-size: .85rem; }
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1rem; }
.stats-grid > div { background: color-mix(in srgb, var(--surface-strong) 85%, transparent); border: 1px solid var(--line); border-radius: 20px; padding: 1rem; display: grid; gap: .3rem; }
.stats-grid strong { font-size: 1.25rem; }
.section { padding: 4rem 0; }
.section-tight { padding-top: 2rem; }
.alt-section { border-top: 1px solid var(--line); }
.section-heading h2 { font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.05; letter-spacing: -0.04em; margin: .6rem 0 1rem; }
.split-heading { display: flex; justify-content: space-between; align-items: end; gap: 1rem; }
.text-link { color: var(--accent); font-weight: 600; }
.cards { display: grid; gap: 1.25rem; }
.four-up { grid-template-columns: repeat(4, 1fr); }
.three-up { grid-template-columns: repeat(3, 1fr); }
.two-up { grid-template-columns: repeat(2, 1fr); }
.five-up { grid-template-columns: repeat(5, 1fr); }
.single-stack { grid-template-columns: 1fr; }
.feature-card h3, .project-card h3, .post-card h3, .case-study h2 { margin-top: 0; font-size: 1.3rem; letter-spacing: -0.03em; }
.feature-card p, .project-card p, .post-card p, .case-study p, .site-footer p { color: var(--muted); }
.chip-row { display: flex; flex-wrap: wrap; gap: .55rem; margin-top: 1rem; }
.cta { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.site-footer { border-top: 1px solid var(--line); padding: 1.5rem 0 2rem; }
.footer-wrap { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.footer-links { display: flex; gap: 1rem; flex-wrap: wrap; color: var(--muted); }
.page-main { padding-top: 1rem; }
.narrow { max-width: 840px; }

@media (max-width: 980px) {
  .hero-grid, .four-up, .three-up, .five-up, .two-up, .cta, .split-heading { grid-template-columns: 1fr; display: grid; }
  .pill-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav { display: none; position: absolute; top: 79px; left: 0; right: 0; padding: 1rem; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 96%, transparent); }
  .nav.open { display: flex; flex-direction: column; align-items: flex-start; }
  .footer-wrap { flex-direction: column; align-items: flex-start; }
  .pill-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 3.5rem; }
}