/* Datant LLC — shared stylesheet */
:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --text: #0b1220;
  --muted: #56607a;
  --line: #e3e7ee;
  --accent: #0891b2;
  --accent-strong: #0e7490;
  --accent-soft: #e6f6fa;
  --radius: 12px;
  --max: 1120px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0f1a;
    --surface: #111827;
    --text: #e8edf5;
    --muted: #9aa5b8;
    --line: #1f2a3c;
    --accent: #22d3ee;
    --accent-strong: #67e8f9;
    --accent-soft: #0f2a33;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: var(--accent-strong); text-underline-offset: 3px; }
a:hover { color: var(--accent); }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 .5em; }
p { margin: 0 0 1em; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: var(--surface); padding: 8px 12px; z-index: 10; }

.wrap { max-width: var(--max); margin: 0 auto; padding-inline: 20px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.15rem; letter-spacing: -0.02em; }
.brand svg { width: 28px; height: 28px; }
.brand small { font-weight: 500; color: var(--muted); font-size: .8rem; }
.nav { display: flex; gap: 4px 20px; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; font-size: .95rem; font-weight: 500; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: 999px;
  font-weight: 600; font-size: .95rem; text-decoration: none;
  border: 1px solid var(--line); color: var(--text); background: var(--surface);
}
.btn:hover { border-color: var(--accent); color: var(--text); }
.btn-primary { background: var(--text); color: var(--bg); border-color: var(--text); }
.btn-primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); color: var(--bg); }

/* Sections */
section { padding-block: 72px; }
section + section { border-top: 1px solid var(--line); }
.eyebrow { display: inline-block; font-size: .78rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-strong); margin-bottom: 12px; }
.section-head { max-width: 680px; margin-bottom: 36px; }
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
.section-head p { color: var(--muted); font-size: 1.05rem; }

.hero { padding-block: 96px 80px; }
.hero h1 { font-size: clamp(2.2rem, 5.5vw, 3.8rem); max-width: 16ch; letter-spacing: -0.035em; }
.hero h1 span { color: var(--accent-strong); }
.hero .lede { font-size: clamp(1.05rem, 2vw, 1.25rem); color: var(--muted); max-width: 58ch; margin-bottom: 28px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 36px; padding: 0; list-style: none; }
.pills li { font-size: .85rem; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; background: var(--surface); }

/* Cards */
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; display: flex; flex-direction: column;
}
.card h3 { font-size: 1.15rem; margin-bottom: .35em; }
.card p { color: var(--muted); }
.card ul { margin: 0; padding-left: 1.1em; color: var(--muted); }
.card ul li { margin-bottom: .3em; }
.card .meta { margin-top: auto; padding-top: 16px; display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: .9rem; }
a.card { text-decoration: none; color: inherit; }
a.card:hover { border-color: var(--accent); }
a.card:hover h3 { color: var(--accent-strong); }
.tag { display: inline-block; font-size: .75rem; font-weight: 600; padding: 2px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-strong); margin-bottom: 12px; align-self: flex-start; }
.tag.muted { background: transparent; border: 1px solid var(--line); color: var(--muted); }
.lang { font-family: var(--mono); font-size: .8rem; color: var(--muted); }
.note { font-size: .85rem; color: var(--muted); }

.about { display: grid; gap: 32px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); align-items: start; }
.facts { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.facts li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 18px; }
.facts strong { display: block; }
.facts span { color: var(--muted); font-size: .92rem; }

.contact-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(24px, 5vw, 48px); display: grid; gap: 28px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); align-items: center; }
.contact-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.contact-list li { display: flex; gap: 10px; flex-wrap: wrap; }
.contact-list b { min-width: 80px; color: var(--muted); font-weight: 500; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding-block: 32px; font-size: .9rem; color: var(--muted); }
.site-footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--text); }

/* Legal / document pages */
.doc { max-width: 760px; margin: 0 auto; padding: 56px 20px 80px; }
.doc h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); }
.doc .updated { color: var(--muted); font-size: .92rem; margin-bottom: 28px; }
.doc .lede { font-size: 1.1rem; color: var(--muted); }
.doc h2 { font-size: 1.35rem; margin-top: 2.2em; padding-top: .4em; }
.doc h3 { font-size: 1.08rem; margin-top: 1.6em; }
.doc ul, .doc ol { padding-left: 1.3em; }
.doc li { margin-bottom: .45em; }
.doc li > ul { margin-top: .45em; }
.doc .table-wrap { overflow-x: auto; margin: 1em 0 1.5em; }
.doc table { border-collapse: collapse; width: 100%; font-size: .93rem; }
.doc th, .doc td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc th { font-weight: 600; background: var(--surface); }
.doc .toc { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; margin-bottom: 8px; }
.doc .toc strong { display: block; margin-bottom: 6px; }
.doc .toc ol { margin: 0; columns: 2 220px; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px; margin: 16px 0; }
.panel .step { font-size: .78rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--accent-strong); margin: 0 0 4px; }
.panel h3 { margin-top: 0; }
.callout { border-left: 3px solid var(--accent); background: var(--accent-soft); padding: 12px 16px; border-radius: 0 8px 8px 0; margin: 1.2em 0; }
.breadcrumb { font-size: .9rem; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a { color: var(--muted); }
.link-list { list-style: none; padding: 0 !important; display: grid; gap: 10px; }
.link-list a { display: flex; justify-content: space-between; gap: 12px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px 18px; text-decoration: none; color: var(--text); font-weight: 500; }
.link-list a:hover { border-color: var(--accent); }
.link-list a span { color: var(--muted); font-weight: 400; font-size: .9rem; }

@media (max-width: 640px) {
  section { padding-block: 56px; }
  .hero { padding-block: 64px 56px; }
  .nav { gap: 4px 14px; }
  .site-header .wrap { padding-block: 10px; }
}