:root{--ink:#16212a;--muted:#65727c;--line:#dfe5e8;--brand:#153e52;--brand2:#276b7c;--bg:#f6f8f9;--card:#fff;--good:#1f6d43;--warn:#8b5d11}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:linear-gradient(180deg,#eef4f6 0,#f8f9f9 32%,#fff 100%);color:var(--ink);line-height:1.65}.wrap{max-width:960px;margin:0 auto;padding:22px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:18px 0;border-bottom:1px solid var(--line);flex-wrap:wrap}.brand{font-weight:900;color:var(--brand);text-decoration:none}.nav{display:flex;gap:14px;flex-wrap:wrap}.nav a{color:var(--brand2);text-decoration:none;font-weight:750;font-size:.9rem}.poweredby{text-align:right;color:var(--muted);font-size:.82rem;font-weight:700;margin-top:8px}.poweredby a{color:var(--brand);font-weight:850;text-decoration:none}.poweredby a:hover{text-decoration:underline}.hero{padding:52px 0 24px}.eyebrow{font-size:.76rem;letter-spacing:.08em;text-transform:uppercase;color:var(--brand2);font-weight:850}.hero h1{font-size:clamp(2rem,5vw,3.4rem);line-height:1.06;letter-spacing:-.035em;margin:.4rem 0 1rem}.lead{font-size:1.08rem;color:var(--muted);max-width:760px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px;margin:20px 0;box-shadow:0 12px 34px rgba(20,45,60,.08)}h2{margin-top:0}h3{margin-bottom:.35rem}p,li{color:#4f5e67}.callout{background:#f1f7f5;border:1px solid #cfe3d9;border-radius:14px;padding:18px;margin:20px 0}.warning{background:#fff8e9;border:1px solid #ead6a8;border-radius:14px;padding:18px;margin:20px 0}.button{display:inline-block;background:var(--brand);color:white!important;text-decoration:none;font-weight:850;padding:11px 15px;border-radius:10px}.source{font-size:.86rem;color:var(--muted)}.source a{color:var(--brand2)}.grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.field label{display:block;font-weight:800;margin-bottom:6px}.field input{width:100%;padding:12px;border:1px solid #cfd8dc;border-radius:10px;font:inherit}.result{font-size:1.25rem;font-weight:850;color:var(--good)}table{width:100%;border-collapse:collapse;margin:16px 0}th,td{text-align:left;border-bottom:1px solid var(--line);padding:10px 8px;vertical-align:top}.ad-slot{min-height:82px;border:1px dashed #b8c2c7;border-radius:14px;background:#fbfcfc;display:flex;align-items:center;justify-content:center;color:#849199;font-size:.85rem;margin:8px 0 24px;text-align:center;padding:14px}footer{border-top:1px solid var(--line);margin-top:36px;padding:24px 0 46px;color:var(--muted);font-size:.84rem}.footerlinks{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:10px}.footerlinks a{color:var(--brand2)}@media(max-width:700px){.grid{grid-template-columns:1fr}.hero{padding-top:34px}.poweredby{text-align:left}}