:root{--bg:#f7f8f4;--ink:#16252b;--mut:#4b5d63;--line:#d5ddd6;--brand:#0f5c5a;--brand-d:#0a4341;--card:#fff;--warn:#8a4b00;--err:#a1262b;--r:10px}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:1rem/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
h1,h2,h3{font-family:"Iowan Old Style",Georgia,"Times New Roman",serif;line-height:1.2;margin:1.8rem 0 .6rem}
h1{font-size:clamp(1.8rem,5vw,2.8rem);margin-top:2rem}h2{font-size:1.5rem}
.wrap{max-width:62rem;margin:0 auto;padding:0 1rem}p,li{max-width:70ch}.lead{font-size:1.15rem;color:var(--mut)}
a{color:var(--brand)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #e0a100;outline-offset:2px}
.skip{position:absolute;left:-999px}.skip:focus{left:1rem;top:1rem;background:#fff;padding:.5rem;z-index:9}
header.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:3.5rem;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.5rem;font-weight:700;text-decoration:none;color:var(--ink)}
nav ul,footer ul{list-style:none;margin:0;padding:0;display:flex;gap:1.1rem;flex-wrap:wrap}nav a{text-decoration:none;color:var(--ink)}nav a[aria-current]{border-bottom:2px solid var(--brand)}
.menu{display:none;background:none;border:1px solid var(--line);border-radius:6px;padding:.4rem .8rem;font:inherit}
@media(max-width:640px){.menu{display:block}nav{display:none;width:100%}nav.open{display:block;padding-bottom:.8rem}nav ul{flex-direction:column;gap:.6rem}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1.25rem;margin:1.5rem 0}.card h2{margin-top:0}
.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(min(14rem,100%),1fr))}.wide{grid-column:1/-1}
label{display:block;font-weight:600;margin:.8rem 0 .3rem}
input,select,textarea{width:100%;font:inherit;padding:.65rem .75rem;border:1px solid #8a9b9a;border-radius:6px;background:#fff;color:var(--ink)}
.hint{color:var(--mut);font-size:.9rem;margin:.3rem 0}.error{color:var(--err);font-weight:600;min-height:1.2em}.warn{color:var(--warn)}
.row{display:flex;gap:.7rem;flex-wrap:wrap;margin:.5rem 0}
.btn{display:inline-block;background:var(--brand);color:#fff;border:1px solid var(--brand);border-radius:6px;padding:.65rem 1.2rem;font:inherit;font-weight:600;cursor:pointer;text-decoration:none}.btn:hover{background:var(--brand-d)}
.btn.alt{background:#fff;color:var(--brand)}.btn.alt:hover{background:#eef4f3}
.chip{background:#fff;border:1px solid var(--line);border-radius:99px;padding:.2rem .8rem;font:inherit;cursor:pointer}
.result{border-top:1px solid var(--line);margin-top:1rem;padding-top:1rem}.big{font:700 clamp(2.2rem,8vw,3.4rem)/1.1 Georgia,serif;margin:.2rem 0;color:var(--brand)}
.scroll{overflow-x:auto}table{border-collapse:collapse;width:100%;background:#fff}th,td{border:1px solid var(--line);padding:.5rem .7rem;text-align:left}th{background:#edf2ee}
details{background:#fff;border:1px solid var(--line);border-radius:8px;padding:.7rem 1rem;margin:.5rem 0}summary{cursor:pointer;font-weight:600}
.tools{padding-left:1.2rem;color:var(--mut)}footer.site{border-top:1px solid var(--line);margin-top:3rem;padding:1.5rem 0;color:var(--mut);font-size:.9rem}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}