:root{--bg:#F7F7F7;--surface:#fff;--warm:#FCFBF9;--warm-line:#E4E0D8;--fg:#1A202C;--muted:#4A5568;--line:rgba(0,0,0,.1);
--hero:#181818;--hero-fg:#fff;--hero-muted:rgba(255,255,255,.72);--cta:#01300a;--cta-hover:#005a15;--gold:#E6CC80;--link:#01300a;
--ok:#1d7a3e;--bad:#b42318;--shadow:0 10px 30px rgba(16,24,40,.08)}
@media (prefers-color-scheme:dark){:root{--bg:#181818;--surface:#1A1A1A;--warm:#202020;--warm-line:#2E2E2E;--fg:#fff;--muted:#A3A3A3;
--line:rgba(255,255,255,.1);--hero:#101010;--cta:#2F7A3E;--cta-hover:#3C9750;--link:#E6CC80;--ok:#5bd28a;--bad:#ff8a80;--shadow:0 10px 30px rgba(0,0,0,.4)}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 "IBM Plex Sans",system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
a{color:var(--link);text-underline-offset:2px}
.hero{background:var(--hero);color:var(--hero-fg);padding:0 16px 72px}
.bar{max-width:960px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 0}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--hero-fg);text-decoration:none;font:500 18px/1 Inter,system-ui,sans-serif;letter-spacing:-.02em}
.brand svg{width:28px;height:28px;flex:none}
.pill{display:inline-block;font:500 14px/1 "IBM Plex Sans",system-ui,sans-serif;padding:10px 16px;border-radius:9999px;text-decoration:none;white-space:nowrap}
.pill.light{background:#F7F7F7;color:#181818}.pill.light:hover{background:#fff}
.hero-in{max-width:760px;margin:0 auto;padding-top:28px}
.hero h1{font:400 clamp(2rem,5.2vw,3.1rem)/1.05 Inter,system-ui,sans-serif;letter-spacing:-.04em;margin:0 0 16px}
.hero .lead{font:400 1.15rem/1.5 Inter,system-ui,sans-serif;letter-spacing:-.01em;color:var(--hero-muted);margin:0;max-width:640px}
.langs{font-size:14px;color:var(--hero-muted);margin:0 0 14px}.langs a{color:var(--gold);margin-right:12px}
main{max-width:792px;margin:-44px auto 0;padding:0 16px}
h2{font:400 1.6rem/1.2 Inter,system-ui,sans-serif;letter-spacing:-.03em;margin:2.2em 0 .6em}
h3{font:500 1.05rem/1.4 Inter,system-ui,sans-serif;letter-spacing:-.01em;margin:1.4em 0 .3em}
p,li{color:var(--muted)}main ul{padding-left:20px}
.tool{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow);position:relative}
.tool label{font:500 15px/1.4 Inter,system-ui,sans-serif;display:block;margin-bottom:10px;color:var(--fg)}
.row{display:flex;gap:8px}
.row input{flex:1;min-width:0;font:17px/1.4 "IBM Plex Mono",ui-monospace,monospace;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--fg)}
.row input:focus{outline:2px solid var(--gold);outline-offset:1px}
.row button,.gen .make{font:500 15px/1 "IBM Plex Sans",system-ui,sans-serif;padding:12px 20px;border:0;border-radius:9999px;background:var(--cta);color:#fff;cursor:pointer}
.row button:hover,.gen .make:hover{background:var(--cta-hover)}
.result{margin-top:12px;font-weight:500}.result:empty{margin-top:0}.result.ok{color:var(--ok)}.result.bad{color:var(--bad)}
.result dl{color:var(--fg);font-weight:400;display:grid;grid-template-columns:auto 1fr;gap:2px 14px;margin:10px 0 0}.result dt{color:var(--muted)}.result dd{margin:0}
.note{font-size:14px;color:var(--muted)}
.gen{background:var(--warm);border:1px solid var(--warm-line);border-radius:16px;padding:4px 20px 12px;margin:20px 0}
.gen h2{font-size:1.25rem;margin:.9em 0 .3em}.gen ul{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 6px}
.num{font:15px "IBM Plex Mono",ui-monospace,monospace;padding:7px 12px;border:1px solid var(--warm-line);border-radius:9999px;background:var(--surface);color:var(--fg);cursor:copy}
.num:hover{border-color:var(--gold)}
.math{font:14.5px/1.6 "IBM Plex Mono",ui-monospace,monospace;overflow-wrap:anywhere;background:var(--warm);border:1px solid var(--warm-line);padding:12px 14px;border-radius:12px;color:var(--fg)}
code{font:.92em "IBM Plex Mono",ui-monospace,monospace;background:var(--warm);border:1px solid var(--warm-line);padding:1px 6px;border-radius:6px;color:var(--fg)}
.cta{background:var(--warm);border:1px solid var(--warm-line);border-top:3px solid var(--gold);border-radius:16px;padding:16px 20px;margin:32px 0;color:var(--muted)}
.cta strong{color:var(--fg)}
.cards{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.cards a{display:block;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:14px 16px;text-decoration:none;color:var(--fg);font:500 15px/1.4 Inter,system-ui,sans-serif}
.cards a:hover{border-color:var(--gold)}.cards small{display:block;color:var(--muted);font:400 13px/1.4 "IBM Plex Sans",system-ui,sans-serif;margin-top:2px}
ul.links{columns:2;padding-left:18px}
footer{background:var(--hero);color:var(--hero-muted);font-size:14px;margin-top:56px;padding:28px 16px 40px}footer .in{max-width:760px;margin:0 auto}footer a{color:var(--gold)}
@media (max-width:560px){ul.links{columns:1}.row{flex-direction:column}.row button{width:100%}.bar .pill{display:none}}
textarea{width:100%;min-height:150px;font:15px/1.5 "IBM Plex Mono",ui-monospace,monospace;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--fg);resize:vertical}
textarea:focus{outline:2px solid var(--gold);outline-offset:1px}
.demo-actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:10px}.demo-actions .count{margin-left:auto}
.sample{font:500 13px/1 "IBM Plex Sans",system-ui,sans-serif;padding:8px 12px;border:1px solid var(--warm-line);border-radius:9999px;background:var(--warm);color:var(--fg);cursor:pointer}
.sample:hover{border-color:var(--gold)}
.submit{font:500 15px/1 "IBM Plex Sans",system-ui,sans-serif;padding:12px 20px;border:0;border-radius:9999px;background:var(--cta);color:#fff;cursor:pointer}.submit:hover{background:var(--cta-hover)}
pre{white-space:pre-wrap;overflow-wrap:anywhere;font:14px/1.6 "IBM Plex Mono",ui-monospace,monospace;background:var(--warm);border:1px solid var(--warm-line);border-radius:12px;padding:14px 16px;color:var(--fg)}
pre code{background:none;border:0;padding:0}
mark{background:rgba(230,204,128,.45);color:var(--fg);border-radius:4px;padding:0 2px}
table.map{width:100%;border-collapse:collapse;font-size:15px}table.map th{text-align:left;font-weight:500;color:var(--muted);border-bottom:1px solid var(--line);padding:8px 6px}
table.map td{border-bottom:1px solid var(--line);padding:8px 6px;vertical-align:top}
#out .bad{color:var(--bad)}
.pagelinks{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 0}.pagelinks a{color:var(--hero-fg);border:1px solid rgba(255,255,255,.25);border-radius:9999px;padding:8px 14px;text-decoration:none;font-size:14px}
.pagelinks a:hover{border-color:var(--gold)}