:root{--bg:#fafaf8;--panel:#fff;--ink:#16191d;--ink2:#4a525b;--line:#d9dcdf;--accent:#a8420f;--on-accent:#fff;--ok:#12663a;--bad:#a21b1b;--focus:#0b5cd5;--sans:ui-sans-serif,"Segoe UI Variable Text","Segoe UI",Roboto,"Helvetica Neue",Arial,system-ui,sans-serif;--mono:ui-monospace,"Cascadia Mono",Menlo,Consolas,monospace;color-scheme:light}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#0e1013;--panel:#161a1f;--ink:#eceff2;--ink2:#a9b2bb;--line:#2a3037;--accent:#f08a55;--on-accent:#16191d;--ok:#5fd18f;--bad:#ff8a8a;--focus:#7db1ff;color-scheme:dark}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 var(--sans)}
.wrap{max-width:46rem;margin:0 auto;padding-inline:1rem}
a{color:var(--accent)}a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:3px}
.skip{position:absolute;left:-999px;top:0;background:var(--panel);padding:.5rem 1rem;z-index:2}.skip:focus{left:0}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.top{border-bottom:1px solid var(--line)}.bar{display:flex;flex-wrap:wrap;gap:.25rem 1.5rem;align-items:center;justify-content:space-between;padding-block:.75rem}
.brand{font-weight:650;color:var(--ink);text-decoration:none}
.menu{display:flex;flex-wrap:wrap;gap:.25rem 1rem}.menu a{color:var(--ink2);text-decoration:none;padding:.25rem 0}.menu a[aria-current=page],.menu a:hover{color:var(--ink);text-decoration:underline}
main{padding-block:1.5rem 3rem}
h1{font-size:clamp(1.75rem,5vw,2.4rem);line-height:1.15;letter-spacing:-.02em;margin:.25rem 0 .75rem}
h2{font-size:1.2rem;line-height:1.3;margin:2rem 0 .6rem}
.lead{font-size:1.1rem;color:var(--ink2);max-width:40rem;margin:0 0 1.5rem}
.crumb{font-size:.9rem;color:var(--ink2)}.crumb a{color:var(--ink2)}
.tool{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:1.25rem}
.tool h2{margin:0}
label{display:block;font-weight:600}
.hint{margin:.1rem 0 .5rem;color:var(--ink2);font-size:.9rem}
.row{display:flex;gap:.5rem;flex-wrap:wrap}
input{flex:1 1 14rem;min-width:0;font:1.05rem var(--mono);padding:.7rem .8rem;border:1px solid var(--ink2);border-radius:8px;background:var(--bg);color:var(--ink)}
button{font:inherit;font-weight:650;min-height:2.75rem;padding:.6rem 1.4rem;border:0;border-radius:8px;background:var(--accent);color:var(--on-accent);cursor:pointer;white-space:nowrap}
button:active{transform:translateY(1px)}button[disabled]{opacity:.6;cursor:progress}
button.link{background:none;color:var(--accent);padding:0;min-height:0;font-weight:400;text-decoration:underline}
.err{color:var(--bad);font-weight:600;margin:.6rem 0 0}.ex{margin:.6rem 0 0;font-size:.9rem;color:var(--ink2)}
.out{margin-top:1rem;outline:none}.out:empty{display:none}
.verdict{display:flex;gap:.5rem;align-items:baseline;font-size:1.2rem;font-weight:700;margin:0 0 .5rem}
.verdict.ok{color:var(--ok)}.verdict.bad{color:var(--bad)}
.res{display:grid;grid-template-columns:minmax(7rem,12rem) minmax(0,1fr);gap:.35rem 1rem;margin:0}.res dt{color:var(--ink2)}.res dd{margin:0;overflow-wrap:anywhere;font-family:var(--mono);font-size:.95rem}
.res+h3,.out h3{font-size:1rem;margin:1rem 0 .3rem}
.issues{margin:.3rem 0 0;padding-left:1.2rem}
.facts{display:grid;gap:.6rem;margin:0}.facts div{display:grid;grid-template-columns:minmax(8rem,12rem) minmax(0,1fr);gap:.25rem 1rem}.facts dt{color:var(--ink2)}.facts dd{margin:0;overflow-wrap:anywhere}
.note{color:var(--ink2);font-size:.9rem}
ul{padding-left:1.2rem}li+li{margin-top:.3rem}
.links{display:flex;flex-wrap:wrap;gap:.5rem 1.25rem;list-style:none;padding:0}.links li+li{margin:0}
details{border-top:1px solid var(--line);padding:.6rem 0}details:last-child{border-bottom:1px solid var(--line)}
summary{cursor:pointer;font-weight:600}details p{margin:.5rem 0 0;color:var(--ink2)}
.cta{margin-top:2.5rem;padding:1.25rem;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:8px;background:var(--panel)}
.cta h2{margin-top:0}.cta p{margin:0 0 1rem}
.btn{display:inline-block;padding:.65rem 1.2rem;border-radius:8px;background:var(--accent);color:var(--on-accent);font-weight:650;text-decoration:none;min-height:2.75rem}
.foot{border-top:1px solid var(--line);color:var(--ink2);font-size:.9rem;padding-block:1.25rem}
@media (max-width:30rem){.res,.facts div{grid-template-columns:minmax(0,1fr)}button[type=submit]{flex:1 1 100%}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}