:root {
  --bg: #f7f9fc;
  --surface: #ffffff;
  --ink: #142137;
  --muted: #5a6472;
  --line: #e1e6ee;
  --blue: #2970e3;
  --blue-ink: #1f5bc0;
  --tint: #e9f0fd;
  --navy: #142137;
  --shadow: 0 1px 2px rgba(20, 33, 55, .06), 0 8px 24px rgba(20, 33, 55, .06);
  --ctrl: #c3ccda;
  --btn-ink: #ffffff;
  --font-display: "Raleway", "Segoe UI", Arial, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1622;
    --surface: #171f2d;
    --ink: #e8edf5;
    --muted: #a3adbd;
    --line: #2a3446;
    --blue: #5b93f0;
    --blue-ink: #8db3f5;
    --tint: #1b2a44;
    --navy: #0b1220;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    --ctrl: #48566e;
    --btn-ink: #0f1622;
  }
}
:root[data-theme="dark"] {
  --bg: #0f1622;
  --surface: #171f2d;
  --ink: #e8edf5;
  --muted: #a3adbd;
  --line: #2a3446;
  --blue: #5b93f0;
  --blue-ink: #8db3f5;
  --tint: #1b2a44;
  --navy: #0b1220;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
  --ctrl: #48566e;
  --btn-ink: #0f1622;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-ink); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
h1, h2, h3 { font-family: var(--font-display); color: var(--ink); margin: 0; text-wrap: balance; line-height: 1.15; }
h1 { font-size: clamp(32px, 5vw, 52px); font-weight: 800; letter-spacing: -.01em; }
h2 { font-size: clamp(26px, 3.2vw, 34px); font-weight: 700; }
h3 { font-size: 18px; font-weight: 700; }
p { margin: 0; }
.wrap { max-width: 1120px; margin: 0 auto; padding-inline: 20px; }
.eyebrow {
  font-size: 12px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--blue-ink); margin-bottom: 12px;
}
.section { padding-block: 72px; }
.section + .section { border-top: 1px solid var(--line); }
.section-head { max-width: 62ch; margin-bottom: 36px; }
.section-head p { color: var(--muted); margin-top: 12px; font-size: 17px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 8px; }

/* Header */
.top { position: sticky; top: 0; z-index: 5; background: var(--bg); background: color-mix(in srgb, var(--bg) 88%, transparent); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 12px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-family: var(--font-display); font-weight: 700; font-size: 17px; letter-spacing: .02em; }
.brand svg { width: 26px; height: 37px; flex: none; }
.mark-blue { fill: var(--blue); }
.mark-ink { fill: var(--ink); }
.nav { margin-left: auto; display: flex; gap: 4px; }
.nav a { color: var(--ink); text-decoration: none; font-weight: 500; font-size: 15px; padding: 8px 12px; border-radius: 6px; }
.nav a:hover { background: var(--tint); color: var(--blue-ink); }

/* Hero */
.hero { padding-block: 88px 64px; }
.hero h1 { max-width: 20ch; }
.hero .lede { max-width: 56ch; color: var(--muted); font-size: 19px; margin-top: 20px; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 8px;
  font-weight: 600; font-size: 15px; text-decoration: none; border: 1px solid transparent;
}
.btn-primary { background: var(--blue); color: var(--btn-ink); }
.btn-primary:hover { background: var(--blue-ink); color: var(--btn-ink); }
.btn-secondary { background: var(--surface); color: var(--ink); border-color: var(--ctrl); }
.btn-secondary:hover { border-color: var(--blue); color: var(--blue-ink); }

/* Work grid */
.work { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.project {
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 20px;
  display: flex; flex-direction: column; gap: 10px; box-shadow: var(--shadow);
}
.project .icon { width: 48px; height: 48px; border-radius: 11px; overflow: hidden; background: var(--tint); }
.project .icon img { width: 48px; height: 48px; object-fit: cover; }
.project h3 { margin-top: 4px; }
.project p { color: var(--muted); font-size: 15px; flex: 1; }
.project .links { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.project .links a {
  font-size: 12.5px; font-weight: 600; text-decoration: none; color: var(--blue-ink);
  border: 1px solid var(--line); border-radius: 6px; padding: 4px 9px; background: var(--bg);
}
.project .links a:hover { border-color: var(--blue); }
.project .links span { font-size: 12.5px; font-weight: 600; color: var(--muted); border: 1px dashed var(--line); border-radius: 6px; padding: 4px 9px; }
.wp { margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--line); }
.wp h3 { margin-bottom: 6px; }
.wp > p { color: var(--muted); max-width: 62ch; margin-bottom: 20px; }
.sites { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.site { display: flex; align-items: center; gap: 14px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; text-decoration: none; color: var(--ink); }
.site:hover { border-color: var(--blue); }
.site img { width: 40px; height: 40px; border-radius: 8px; object-fit: cover; }
.site b { display: block; font-family: var(--font-display); font-size: 15px; }
.site small { color: var(--muted); font-size: 13px; }

/* Open source strip */
.oss { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; margin-top: 40px; padding: 20px 24px; background: var(--tint); border-radius: 12px; }
.oss p { flex: 1 1 380px; color: var(--ink); }
.oss .links { display: flex; flex-wrap: wrap; gap: 10px; }

/* Capabilities */
.caps { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.cap { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
.cap h3 { margin-bottom: 4px; }
.cap p { color: var(--muted); font-size: 14.5px; margin-bottom: 14px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tags span { font-size: 13.5px; padding: 5px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); }
.credit { color: var(--muted); font-size: 14px; margin-top: 32px; }

/* About + contact */
.about { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: start; }
.about .facts { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 20px 22px; }
.about .facts dl { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 8px 16px; margin: 0; font-size: 15px; }
.about .facts dt { color: var(--muted); }
.about .facts dd { margin: 0; overflow-wrap: anywhere; }
.about p + p { margin-top: 14px; }
.contact { background: var(--navy); color: #e8edf5; border-radius: 16px; padding: 44px 32px; display: flex; flex-wrap: wrap; gap: 20px 40px; align-items: center; justify-content: space-between; }
.contact h2 { color: #fff; }
.contact p { color: #b6c1d4; margin-top: 8px; max-width: 48ch; }
.contact .btn-primary { background: #fff; color: #142137; }
.contact .btn-primary:hover { background: #e9f0fd; color: #142137; }

/* Documents */
.doc { max-width: 72ch; min-width: 0; }
.doc h1 { margin-top: 6px; }
.doc .meta { color: var(--muted); margin-top: 10px; font-size: 15px; }
.doc h2 { font-size: 22px; margin-top: 36px; }
.doc p, .doc ul { margin-top: 12px; }
.doc ul { padding-left: 1.2em; }
.doc li + li { margin-top: 6px; }

/* Footer */
footer { padding-block: 32px 48px; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between; }
footer a { color: var(--muted); }
.theme { display: inline-flex; align-items: center; gap: 8px; }
.theme span { font-size: 13px; }
.theme-options { display: inline-flex; border: 1px solid var(--ctrl); border-radius: 8px; overflow: hidden; background: var(--surface); }
.theme-options button {
  appearance: none; border: 0; background: transparent; color: var(--muted); font: inherit; font-size: 13px; font-weight: 500;
  padding: 6px 12px; cursor: pointer; line-height: 1.4;
}
.theme-options button + button { border-left: 1px solid var(--ctrl); }
.theme-options button:hover { color: var(--ink); }
.theme-options button[aria-pressed="true"] { background: var(--tint); color: var(--blue-ink); font-weight: 600; }
.theme-options button:focus-visible { outline-offset: -3px; }

@media (max-width: 720px) {
  html { scroll-padding-top: 8px; }
  .top { position: static; }
  .top .wrap { flex-wrap: wrap; height: auto; padding-block: 10px 4px; }
  .nav { width: 100%; margin-left: -12px; overflow-x: auto; }
  .nav a { white-space: nowrap; }
  .hero { padding-block: 56px 40px; }
  .section { padding-block: 56px; }
  .about { grid-template-columns: 1fr; }
  .contact { padding: 32px 22px; }
}
.doc code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em; overflow-wrap: anywhere; }
.doc pre { max-width: 100%; margin-top: 12px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; overflow-x: auto; }
.doc pre code { font-size: 13.5px; overflow-wrap: normal; }
.doc .tests { list-style: none; padding-left: 0; }
.doc .tests li { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.doc .tests a { display: block; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13.5px; overflow-wrap: anywhere; }
.doc .tests span { display: block; color: var(--muted); font-size: 14.5px; margin-top: 6px; }