/* AAB Research — www.aab-research.com */
:root {
  --bg: #ffffff;
  --alt: #f4f7f8;
  --ink: #16212b;
  --muted: #5b6a78;
  --line: #dde4e8;
  --accent: #1f6f78;
  --accent-dk: #17545b;
  --accent-soft: #e4f1f2;
  --accent-ink: #ffffff;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #11171d;
    --alt: #172029;
    --ink: #e8eef3;
    --muted: #9aa8b6;
    --line: #2a3542;
    --accent: #4fb3bd;
    --accent-dk: #7fcdd5;
    --accent-soft: #1b3236;
    --accent-ink: #0c1719;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 var(--sans); }
h1, h2, h3 { line-height: 1.2; }
a { color: var(--accent); }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 8px; top: 8px; background: var(--accent); color: var(--accent-ink); padding: 8px 12px; border-radius: 6px; z-index: 10; }

/* header */
.site-head { border-bottom: 1px solid var(--line); background: var(--bg); position: sticky; top: 0; z-index: 5; }
.bar { max-width: 1060px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.wordmark { font-size: 19px; letter-spacing: .01em; text-decoration: none; color: var(--ink); }
.wordmark b { color: var(--accent); }
.mainnav { margin-left: auto; display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.mainnav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.mainnav a:hover { color: var(--ink); }
.mainnav a.cta { color: var(--accent-ink); }

/* buttons */
.cta {
  display: inline-block; background: var(--accent); color: var(--accent-ink); text-decoration: none;
  padding: 11px 20px; border-radius: 8px; font-weight: 600; border: 1px solid var(--accent);
}
.cta:hover { background: var(--accent-dk); border-color: var(--accent-dk); }
.cta.ghost { background: transparent; color: var(--accent); }
.cta.ghost:hover { background: var(--accent-soft); }
.cta.small { padding: 7px 14px; font-size: 14px; }
.cta.big { padding: 14px 26px; font-size: 17px; }

/* hero */
.hero { background: linear-gradient(180deg, var(--accent-soft), var(--bg)); border-bottom: 1px solid var(--line); }
.hero-in { max-width: 1060px; margin: 0 auto; padding: 56px 20px 48px; }
.eyebrow { text-transform: uppercase; letter-spacing: .1em; font-size: 12.5px; font-weight: 700; color: var(--accent); margin: 0 0 10px; }
.hero h1 { font-size: clamp(28px, 4.6vw, 42px); margin: 0 0 14px; }
.lede { font-size: 17.5px; color: var(--muted); max-width: 60ch; margin: 0 0 22px; }
.hero-actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 0; }

/* sections */
.section { max-width: 1060px; margin: 0 auto; padding: 52px 20px; }
.section.alt { max-width: none; background: var(--alt); border-block: 1px solid var(--line); }
.section.alt > * { max-width: 1060px; margin-inline: auto; }
.section h2 { font-size: clamp(22px, 3vw, 28px); margin: 0 0 8px; }
.section-lede { color: var(--muted); margin: 0 0 26px; max-width: 60ch; }

/* product cards */
.grid-cards { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.prod { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 20px; display: flex; flex-direction: column; }
.prod h3 { font-size: 18px; margin: 0 0 8px; }
.prod p { margin: 0 0 14px; color: var(--muted); }
.prod .tag { display: inline-block; align-self: flex-start; background: var(--accent-soft); color: var(--accent); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; padding: 3px 9px; border-radius: 20px; margin: 0 0 10px; }
.prod-links { margin: auto 0 0; }

/* about */
.split { display: grid; gap: 28px; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); align-items: start; }
.split p { color: var(--muted); }
.split h2, .split h3 { margin-top: 0; }
.note-card { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 20px; }
.note-card h3 { font-size: 17px; margin-bottom: 8px; }
@media (max-width: 760px) { .split { grid-template-columns: minmax(0, 1fr); } }

/* contact */
.contact { text-align: center; padding-block: 60px; }
.contact .section-lede { margin-inline: auto; }

/* footer */
.site-foot { border-top: 1px solid var(--line); background: var(--alt); }
.foot-in { max-width: 1060px; margin: 0 auto; padding: 24px 20px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; color: var(--muted); font-size: 14px; }
.foot-in p { margin: 0; }

/* document pages (privacy) */
.doc-page { max-width: 760px; margin: 0 auto; padding: 36px 20px 56px; }
.doc-page h1 { font-size: clamp(24px, 3.4vw, 30px); margin: 0 0 4px; }
.doc-page h2 { font-size: 17px; margin: 26px 0 6px; }
.doc-page li { margin: 5px 0; }
.doc-page p, .doc-page li { color: var(--muted); }
.muted { color: var(--muted); }
.todo { background: #fff3d6; color: #8a5a00; border-radius: 3px; padding: 0 4px; font-weight: 600; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .todo { background: #3a3016; color: #f0c060; } }