:root{--ctl-line:#808880;--bg:#fbfaf7;--fg:#1c2421;--muted:#55605c;--line:#dcdcd4;--card:#fff;--accent:#1d4f91;--accent-2:#e8f0fb;--err:#a3261b;--focus:#c26a00;color-scheme:light dark}
@media (prefers-color-scheme:dark){:root{--ctl-line:#7e8b83;--bg:#121614;--fg:#e8ece9;--muted:#a6b0ab;--line:#2c3430;--card:#1a201d;--accent:#7fb2f0;--accent-2:#1b2a40;--err:#ff8a7a;--focus:#ffb454}}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--accent);text-underline-offset:2px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.wrap{max-width:960px;margin:0 auto;padding:0 18px}
.skip{position:absolute;left:-999px;top:0;background:var(--card);padding:8px 12px;z-index:9}.skip:focus{left:8px}
.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.site-header{border-bottom:1px solid var(--line);background:var(--card)}
.site-header .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:6px 18px;padding-top:10px;padding-bottom:10px}
.brand{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:1.15rem;color:var(--fg);text-decoration:none}.logo{display:block}
.site-header ul{display:flex;flex-wrap:wrap;gap:4px 14px;list-style:none;margin:0;padding:0;font-size:.95rem}
.site-header nav a{color:var(--muted);text-decoration:none}.site-header nav a:hover{color:var(--accent);text-decoration:underline}
main{padding-top:18px;padding-bottom:40px;min-height:60vh}
h1{font-size:clamp(1.6rem,3.6vw,2.2rem);line-height:1.2;margin:.4em 0 .3em}
h2{font-size:1.35rem;margin:1.6em 0 .5em}h3{font-size:1.08rem;margin:1.2em 0 .3em}
.lead{font-size:1.08rem;color:var(--muted);max-width:70ch}
.crumbs{font-size:.9rem;color:var(--muted)}
.small{font-size:.88rem;color:var(--muted)}
.hero{padding:10px 0 4px}
#q{width:100%;max-width:560px;font:inherit;padding:12px 14px;border:1px solid var(--ctl-line);border-radius:10px;background:var(--card);color:var(--fg);margin-top:8px}
.cards{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px}
.card a{display:block;height:100%;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--card);text-decoration:none;color:var(--fg)}
.card a:hover{border-color:var(--accent)}
.card strong{display:block;color:var(--accent);margin-bottom:4px}.card span{font-size:.92rem;color:var(--muted)}
.cat h2 a{color:var(--fg);text-decoration:none}
.tool,.out{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin:16px 0 0}
.out{margin-top:-1px;border-top-left-radius:0;border-top-right-radius:0;background:var(--accent-2)}
.tool:has(+ .out){border-bottom-left-radius:0;border-bottom-right-radius:0}
.fields{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px 16px}
.field{display:flex;flex-direction:column;gap:4px}.field.wide{grid-column:1/-1}
.field label{font-weight:600;font-size:.95rem}
.ctl{display:flex;align-items:center;gap:6px}
.ctl input:not([type=checkbox]):not([type=radio]),.ctl select,.ctl textarea,.tool textarea,.tool input[type=text],.tool input[type=number],.tool input[type=date],.tool input[type=datetime-local],.tool input[type=time],.tool input[type=url],.tool input[type=email],.tool input[type=search],.tool select{width:100%;font:inherit;padding:9px 10px;border:1px solid var(--ctl-line);border-radius:8px;background:var(--bg);color:var(--fg);min-height:44px}
textarea{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92rem;resize:vertical}
[aria-invalid=true]{border-color:var(--err)!important}
.unit{color:var(--muted);font-size:.9rem;white-space:nowrap}
.help{color:var(--muted);font-size:.84rem}
.field.check{flex-direction:row;flex-wrap:wrap;align-items:flex-start;gap:4px 8px;align-self:start}.field.check input{width:20px;height:20px;flex:0 0 20px;margin-top:2px}.field.check label{flex:1 1 0;min-width:0}.field.check .help{flex:1 0 100%;padding-left:28px}
.results{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;margin:0}
.results .r{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:10px 12px}
.results dt{font-size:.85rem;color:var(--muted)}.results dd{margin:2px 0 0;font-size:1.15rem;font-weight:650;overflow-wrap:anywhere}
.results .primary{grid-column:1/-1;border-color:var(--accent)}.results .primary dd{font-size:1.6rem;color:var(--accent)}
.notes{font-size:.9rem;color:var(--muted);padding-left:18px}
.err{color:var(--err);font-weight:600;margin:0 0 8px}
.actions{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px}
.btn{font:inherit;font-size:.92rem;padding:8px 14px;min-height:40px;border-radius:8px;border:1px solid var(--accent);background:var(--accent);color:#fff;cursor:pointer}
@media (prefers-color-scheme:dark){.btn{color:#08130f}}
.btn.ghost{background:transparent;color:var(--accent)}
.tablewrap{overflow-x:auto;margin-top:12px}
table{border-collapse:collapse;width:100%;font-size:.93rem;background:var(--card)}
caption{text-align:left;font-weight:600;padding:6px 0}
th,td{border:1px solid var(--line);padding:6px 8px;text-align:left;vertical-align:top}
th{background:var(--accent-2)}
.disclaimer{font-size:.9rem;color:var(--muted);border-left:3px solid var(--line);padding-left:10px;margin:14px 0}
.prose{max-width:75ch}
.prose code,.prose pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;background:var(--accent-2);border-radius:4px}
.prose code{padding:1px 4px}.prose pre{padding:10px 12px;overflow-x:auto}
.formula{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--accent-2);padding:10px 12px;border-radius:8px;overflow-x:auto;white-space:pre-wrap}
details{border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin:8px 0;background:var(--card)}
summary{cursor:pointer;font-weight:600}
details>div{margin-top:8px}
.related{margin-top:28px}
.site-footer{border-top:1px solid var(--line);padding:18px 0;font-size:.92rem;background:var(--card)}
.drop{border:2px dashed var(--line);border-radius:12px;padding:26px;text-align:center}
.drop.over{border-color:var(--accent);background:var(--accent-2)}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
fieldset.fields{border:0;margin:0;padding:0;min-width:0}
.tool.pending .fields{opacity:.85}
.tool input[type=file]{font:inherit;max-width:100%;padding:8px;border:1px dashed var(--ctl-line);border-radius:8px;background:var(--bg);color:var(--fg)}
.tool input[type=color]{min-height:44px;width:100%;border:1px solid var(--ctl-line);border-radius:8px;background:var(--bg)}
.tool input[type=checkbox],.tool input[type=radio]{width:20px;height:20px;accent-color:var(--accent)}
.tool.custom .btn{margin:4px 8px 4px 0}
.tool.custom>*+*{margin-top:12px}
.tool.custom{min-height:240px}