:root{--navy:#1F3A5F;--teal:#2A9D8F;--ink:#1d2733;--mute:#5b6878;--bg:#f6f8fb;--line:#d9e0e8;--warn:#b42318}
*{box-sizing:border-box}body{margin:0;font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
a{color:#1f6f66}header.top{background:var(--navy);color:#fff}header.top .w{display:flex;gap:1rem;align-items:center;justify-content:space-between;flex-wrap:wrap}
header.top a{color:#fff;text-decoration:none}.brand{font-weight:700;font-size:1.1rem}.brand span{color:#7fd6cb}nav a{margin-left:.9rem;font-size:.92rem;opacity:.9}
.w{max-width:880px;margin:0 auto;padding:1rem}h1{color:var(--navy);font-size:1.75rem;line-height:1.2;margin:.6rem 0}h2{color:var(--navy);font-size:1.25rem;margin-top:2rem}
.lede{color:var(--mute);font-size:1.05rem}.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:1rem 1.1rem;margin:1rem 0}
label{display:block;font-weight:600;font-size:.92rem;margin:.6rem 0 .2rem}input,select{width:100%;padding:.55rem .6rem;border:1px solid #b9c4d0;border-radius:6px;font-size:1rem;background:#fff}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:0 1rem}.hint{font-size:.82rem;color:var(--mute);font-weight:400}
button{background:var(--teal);color:#fff;border:0;border-radius:6px;padding:.65rem 1.1rem;font-size:1rem;font-weight:600;cursor:pointer;margin-top:.9rem}
.result{border-left:5px solid var(--teal);background:#eef8f6}.big{font-size:1.6rem;font-weight:700;color:var(--navy)}.bad{color:var(--warn);font-weight:700}
table{border-collapse:collapse;width:100%;font-size:.9rem}th,td{border-bottom:1px solid var(--line);padding:.35rem .4rem;text-align:right}th:first-child,td:first-child{text-align:left}
th{background:var(--navy);color:#fff;font-weight:600}.scroll{overflow-x:auto}tr.over td{background:#fde2e1}
.cta{background:var(--navy);color:#fff;border-radius:10px;padding:1rem 1.2rem}.cta a.btn{display:inline-block;background:var(--teal);color:#fff;padding:.6rem 1rem;border-radius:6px;text-decoration:none;font-weight:700;margin-top:.4rem}
.cta ul{margin:.4rem 0 .6rem 1.1rem;padding:0}details{background:#fff;border:1px solid var(--line);border-radius:8px;padding:.6rem .9rem;margin:.5rem 0}summary{font-weight:600;cursor:pointer}
.disc{font-size:.85rem;color:var(--mute);border-top:1px solid var(--line);margin-top:2rem;padding-top:1rem}footer{background:#e9eef4;font-size:.85rem;color:var(--mute);margin-top:2rem}
.tools{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem}.tools a{display:block;background:#fff;border:1px solid var(--line);border-top:4px solid var(--teal);border-radius:8px;padding:1rem;text-decoration:none;color:var(--ink)}
.tools a b{color:var(--navy);display:block;margin-bottom:.3rem}.row2{display:grid;grid-template-columns:2fr 1fr 1fr 1fr 1fr;gap:.4rem;margin:.25rem 0}.row2 input,.row2 select{padding:.4rem}
@media(max-width:560px){nav a{margin:0 .7rem 0 0}.row2{grid-template-columns:1fr 1fr}}
.cta a.alt{color:#fff;margin-left:.8rem;font-size:.95rem;text-decoration:underline;white-space:nowrap}