:root {
  --bg: #f7f8fa;
  --bg-alt: #eef1f5;
  --surface: #ffffff;
  --text: #1b1f24;
  --muted: #5a6472;
  --border: #dde2e8;
  --accent: #1f7a5a;
  --accent-contrast: #ffffff;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 4px 16px rgba(16, 24, 40, .06);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, Cantarell, "Noto Sans", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "DejaVu Sans Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --bg-alt: #151a20;
    --surface: #1a2028;
    --text: #e6e9ee;
    --muted: #9aa4b2;
    --border: #2a323d;
    --accent: #4cc9a0;
    --accent-contrast: #0b1410;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
  }
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.wrap { width: min(100% - 2.5rem, 960px); margin-inline: auto; }

.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--accent); color: var(--accent-contrast);
  padding: .5rem 1rem; z-index: 10;
}
.skip:focus { left: 1rem; top: 1rem; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: .75rem; }
.brand { display: inline-flex; align-items: center; gap: .5rem; font-weight: 700; color: var(--text); text-decoration: none; font-family: var(--mono); }
.nav ul { list-style: none; display: flex; gap: 1.25rem; margin: 0; padding: 0; }
.nav a:not(.brand) { color: var(--muted); text-decoration: none; font-weight: 500; }
.nav a:not(.brand):hover { color: var(--text); }

/* Hero */
.hero { padding-block: clamp(4rem, 12vw, 8rem) clamp(3rem, 8vw, 5rem); }
.eyebrow { font-family: var(--mono); color: var(--muted); margin: 0 0 .5rem; }
.prompt { color: var(--accent); }
h1 { font-size: clamp(2.5rem, 7vw, 4.25rem); line-height: 1.05; letter-spacing: -.02em; margin: 0 0 1rem; }
.tagline { font-size: clamp(1.15rem, 2.5vw, 1.4rem); color: var(--muted); max-width: 38ch; margin: 0 0 2rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin: 0; }

.btn {
  display: inline-block; padding: .7rem 1.25rem; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text); text-decoration: none; font-weight: 600;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-contrast); }

/* Sections */
.section { padding-block: clamp(3rem, 8vw, 5rem); }
.section.alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
h2 { font-size: clamp(1.6rem, 4vw, 2.1rem); letter-spacing: -.01em; margin: 0 0 1.25rem; }
.section p { max-width: 65ch; }
.lead { color: var(--muted); margin-top: -.5rem; }

.cards {
  list-style: none; padding: 0; margin: 1.5rem 0 0;
  display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem 1.25rem 1rem;
  box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 .35rem; font-size: 1.1rem; }
.card h3::before { content: "▸ "; color: var(--accent); }
.card p { margin: 0; color: var(--muted); font-size: .975rem; }

.contact { list-style: none; padding: 0; margin: 0; display: grid; gap: .75rem; }
.contact li { display: flex; flex-wrap: wrap; gap: .25rem 1rem; align-items: baseline; }
.label { font-family: var(--mono); color: var(--muted); min-width: 6rem; font-size: .9rem; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding-block: 2rem; color: var(--muted); font-size: .9rem; }
.site-footer p { margin: 0; }

@media (max-width: 560px) {
  .nav { flex-direction: column; align-items: flex-start; gap: .4rem; }
  .nav ul { gap: 1rem; }
}