:root {
  color-scheme: light dark;
  --bg: #f5f8fc; --panel: #ffffff; --fg: #111827; --muted: #556070; --line: rgba(60,90,150,.20); --soft: #eaf1fb;
  --accent: #1d4ed8; --accent2: #0f766e; --accent-fg: #ffffff;
  --ok: #15803d; --exp: #b45309; --no: #6b7280;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0d1117; --panel: #161c26; --fg: #eef2f8; --muted: #a2adbd; --line: rgba(140,170,230,.22); --soft: #1b2433;
    --accent: #60a5fa; --accent2: #2dd4bf; --accent-fg: #0c0c14; --ok: #4ade80; --exp: #fbbf24; --no: #9ca3af; }
}
* { box-sizing: border-box; }
html { background: var(--bg); }
body { margin: 0; overflow-wrap: anywhere; background: var(--bg); color: var(--fg); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
.top { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid var(--line); background: var(--panel); }
html { scroll-padding-top: 72px; }
.top .wrap { display: flex; align-items: center; gap: 10px; height: 56px; }
.top a.brand { display: flex; align-items: center; gap: 8px; color: var(--fg); text-decoration: none; font-weight: 700; }
.top nav { margin-left: auto; display: flex; align-items: center; gap: 16px; font-size: 14px; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--fg); }
/* Buy Me a Coffee's own button colours: yellow, black text, black outline (no script, nothing loaded from them) */
.top nav a.nav-coffee { background: #FFDD00; color: #000000; border: 1px solid #000000; }
.top nav a.nav-coffee:hover { background: #FFE433; color: #000000; }
.top nav a.nav-coffee { border-radius: 999px; padding: 2px 10px; font-weight: 600; }
.hero { padding: 72px 0 40px; }
.hero h1 { font-size: clamp(30px, 5.5vw, 50px); line-height: 1.1; margin: 0 0 16px; letter-spacing: -.02em; max-width: 18ch;
  background: linear-gradient(90deg, var(--accent), var(--accent2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lede { font-size: 19px; color: var(--muted); max-width: 46ch; margin: 0 0 28px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.btn { display: inline-block; border-radius: 10px; padding: 12px 20px; font-weight: 600; text-decoration: none; border: 1px solid var(--line); color: var(--fg); background: var(--panel); }
.btn.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.small { font-size: 14px; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin: 48px 0; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 22px; }
.card h2, .card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); }
.projects { margin: 0 0 48px; }
.projects h2 { font-size: 20px; margin: 0 0 16px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card.proj { display: flex; flex-direction: column; gap: 8px; text-decoration: none; color: var(--fg); }
.card.proj p { flex: 1; }
.card.proj .go { font-size: 14px; color: var(--accent); }
.card.proj:hover { border-color: var(--accent); }
.shot { margin: 0 0 8px; }
.shot img { width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--line); display: block; }
.doc { padding-top: 48px; padding-bottom: 64px; max-width: 760px; }
.doc h1 { font-size: 34px; line-height: 1.2; margin: 0 0 8px; }
.doc h2 { font-size: 20px; margin: 32px 0 8px; }
.doc code { font: 14px ui-monospace, Menlo, monospace; background: var(--soft); padding: 1px 4px; border-radius: 4px; }
footer { border-top: 1px solid var(--line); padding: 24px 0 40px; font-size: 14px; color: var(--muted); }
footer p { margin: 0 0 8px; }
@media (max-width: 640px) { .grid, .grid3 { grid-template-columns: 1fr; } }
@media (max-width: 520px) { .hero { padding-top: 40px; } .top nav { gap: 12px; } .top nav .wide { display: none; } }

/* FollowSight: two-column hero with an illustrated panel */
.hero { display: grid; grid-template-columns: 1.15fr 1fr; gap: 40px; align-items: center; }
.hero h1 { max-width: 14ch; }
.hero .small { margin: 16px 0 0; }
.sec { font-size: 24px; margin: 0 0 16px; letter-spacing: -.01em; }
main > section { margin: 0 0 56px; }
.grid, .grid3 { margin: 0; }
.grid2x2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.mock { margin: 0; background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 14px; box-shadow: 0 18px 50px -24px rgba(29,78,216,.45); font-size: 14px; }
.mock b { display: block; font-weight: 600; }
.mock span { color: var(--muted); }
.mock .av { flex: none; width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent2)); }
.mock .av.a1 { background: #f59e0b; } .mock .av.a2 { background: #10b981; } .mock .av.a3 { background: #8b5cf6; } .mock .av.a4 { background: #ef4444; }
.mock-head { display: flex; align-items: center; gap: 10px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.mock-head div { flex: 1; min-width: 0; } .mock-head div span { font-size: 12px; }
.mock .scan { background: var(--accent); color: var(--accent-fg); border-radius: 8px; padding: 4px 12px; font-weight: 600; }
.mock-tabs { display: flex; gap: 6px; padding: 10px 0; overflow: hidden; white-space: nowrap; }
.mock-tabs span { border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px; font-size: 13px; }
.mock-tabs span.on { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.mock-tabs i { font-style: normal; opacity: .7; }
.mock-list { list-style: none; margin: 0; padding: 0; }
.mock-list li { display: flex; align-items: center; gap: 10px; padding: 8px 0; }
.mock-list li div { flex: 1; min-width: 0; } .mock-list li div span { font-size: 12px; }
.mock .b { border: 1px solid var(--line); border-radius: 8px; padding: 3px 10px; font-size: 13px; color: var(--fg); font-weight: 600; }
.mock figcaption { font-size: 12px; color: var(--muted); text-align: center; padding-top: 6px; }
.btn.soon { cursor: default; opacity: .85; }
.faq details { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin: 0 0 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { margin: 10px 0 0; color: var(--muted); }
@media (max-width: 800px) { .hero { grid-template-columns: 1fr; } }
@media (max-width: 640px) { .grid2x2 { grid-template-columns: 1fr; } }