/* ClearAlt — the site is itself a demonstration: every colour pair passes
   WCAG AA, focus is always visible, and nothing depends on colour alone. */
:root{
  --bg:#F6F7F5; --surface:#FFFFFF; --surface-2:#ECEFEC;
  --ink:#14181A;      /* 16.4:1 on --surface */
  --ink-2:#454F4C;    /* 8.6:1  on --surface */
  --ink-3:#5F6A67;    /* 5.9:1  on --surface */
  --line:#D6DCD9; --line-strong:#A8B2AF;
  --accent:#0B5D4E;   /* 7.6:1  on --surface */
  --accent-soft:#DDEDE8;
  --mark:#FFD166;     /* decorative only, never carries text meaning */
  --radius:10px;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0E1211; --surface:#161C1A; --surface-2:#1F2725;
    --ink:#EAEFEC; --ink-2:#C0C9C6; --ink-3:#98A29F;
    --line:#2B3432; --line-strong:#485351;
    --accent:#5FD3B6; --accent-soft:#14322C; --mark:#E0B44E;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"Public Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:17px;line-height:1.62;-webkit-font-smoothing:antialiased;
}
.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:#fff;padding:10px 16px;z-index:10}
.skip:focus{left:8px;top:8px;border-radius:6px}
a{color:var(--accent);text-underline-offset:3px;text-decoration-thickness:1.5px}
a:hover{text-decoration-thickness:2.5px}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:3px}
.wrap{max-width:760px;margin:0 auto;padding:0 22px 88px}
header.site{border-bottom:1px solid var(--line);margin-bottom:8px}
nav.site{max-width:760px;margin:0 auto;padding:18px 22px;display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.brand{font-weight:800;letter-spacing:-.02em;font-size:19px;color:var(--ink);text-decoration:none}
.brand span{color:var(--accent)}
nav.site .spacer{margin-left:auto}
nav.site a:not(.brand){font-size:15px;color:var(--ink-2);text-decoration:none;font-weight:500}
nav.site a:not(.brand):hover{color:var(--ink);text-decoration:underline}
h1{font-size:clamp(30px,5.2vw,44px);line-height:1.08;letter-spacing:-.025em;font-weight:800;margin:44px 0 14px;text-wrap:balance}
h2{font-size:22px;line-height:1.2;letter-spacing:-.015em;font-weight:700;margin:40px 0 10px;text-wrap:balance}
h3{font-size:17px;font-weight:700;margin:26px 0 6px}
p{margin:0 0 15px;max-width:66ch}
.lead{font-size:19.5px;color:var(--ink-2)}
strong{font-weight:700}
ul,ol{max-width:66ch;padding-left:22px;margin:0 0 16px}
li{margin-bottom:8px;color:var(--ink-2)}
li strong{color:var(--ink)}
.meta{font-family:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-3)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;margin:24px 0}
.card h2,.card h3{margin-top:0}
.card p:last-child,.card ul:last-child{margin-bottom:0}
.note{background:var(--accent-soft);border-left:4px solid var(--accent);border-radius:0 var(--radius) var(--radius) 0;padding:16px 20px;margin:24px 0}
.note p:last-child{margin-bottom:0}
table{width:100%;border-collapse:collapse;font-size:15px;margin:18px 0}
th{text-align:left;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3);padding:9px 12px;border-bottom:2px solid var(--line-strong)}
td{padding:11px 12px;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:top}
td:first-child{color:var(--ink);font-weight:600}
tr:last-child td{border-bottom:none}
.scroller{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.scroller table{margin:0;min-width:480px}
.demo{display:flex;flex-wrap:wrap;gap:14px;margin:20px 0}
.chip{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;min-width:210px;flex:1}
.chip .band{padding:16px;font-size:16px;font-weight:600}
.chip .foot{padding:8px 12px;background:var(--surface-2);border-top:1px solid var(--line);font-size:13px;color:var(--ink-2);display:flex;justify-content:space-between;gap:10px}
.chip .foot b{font-variant-numeric:tabular-nums;color:var(--ink)}
footer.site{border-top:1px solid var(--line);margin-top:56px;padding:24px 0 40px}
footer.site .wrap{padding-bottom:0}
footer.site p{font-size:14px;color:var(--ink-3);margin:0}
code{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:.9em;background:var(--surface-2);border:1px solid var(--line);border-radius:4px;padding:1px 5px}
@media (max-width:560px){body{font-size:16px}h1{margin-top:30px}}