:root{--teal:#14b8a6;--teal-dark:#0f766e;--amber:#f59e0b;--amber-dark:#b45309;--night:#0b1220;--night-2:#101a30;--paper:#f3f6f9;--ink:#17202e;--ink-soft:#58657a;--card:#ffffff;--border:#e2e8f0;--green:#15803d;--red:#b91c1c;--max:1060px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.65}a{color:var(--teal-dark)}.container{max-width:var(--max);margin:0 auto;padding:0 20px}.site-header{background:var(--night);color:#fff;padding:14px 0;position:-webkit-sticky;position:sticky;top:0;z-index:50;border-bottom:2px solid var(--teal)}.site-header .container{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}.brand{color:#fff;text-decoration:none;font-weight:800;font-size:1.05rem;letter-spacing:.2px}.brand span{color:var(--teal)}.nav{display:flex;gap:16px;flex-wrap:wrap}.nav a{color:#bcc8dd;text-decoration:none;font-size:.92rem}.nav a:hover{color:#fff;text-decoration:underline}.hero{background:radial-gradient(900px 420px at 85% -10%,rgba(20,184,166,.35),transparent 60%),linear-gradient(160deg,var(--night) 0,#0d2a33 100%);color:#fff;padding:44px 0 52px}.hero h1{margin:0 0 10px;font-size:clamp(1.6rem,4vw,2.4rem);line-height:1.2}.hero p{margin:0;max-width:720px;color:#c9d6e6}.hero .updated{display:inline-block;margin-top:14px;font-size:.85rem;background:rgba(20,184,166,.15);border:1px solid rgba(20,184,166,.5);color:#8ef0e2;border-radius:999px;padding:4px 12px}main{padding:32px 0 56px}.section{margin:28px 0}.section h2{font-size:1.35rem;margin:0 0 12px}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px}.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));grid-gap:16px;gap:16px}.calc-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}.calc-tabs button{border:1px solid var(--border);background:var(--card);border-radius:999px;padding:8px 16px;font-size:.95rem;cursor:pointer;color:var(--ink)}.calc-tabs button.active{background:var(--night);color:#fff;border-color:var(--night)}.calc-row{display:flex;gap:12px;flex-wrap:wrap;align-items:end}.field{display:flex;flex-direction:column;gap:6px;min-width:220px;flex:1 1}.field label{font-size:.85rem;font-weight:600;color:var(--ink-soft)}.field input,.field select{padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:1rem;background:#fff;color:var(--ink)}.result-box{margin-top:18px;padding:18px;border-radius:10px;background:#eefbf7;border:1px solid #b8e8dc}.result-box.big{font-size:1.15rem}.result-child{font-size:1.4rem;font-weight:800}.badge{display:inline-block;font-size:.75rem;font-weight:700;border-radius:999px;padding:2px 10px;vertical-align:middle}.badge.verified{background:#dcfce7;color:var(--green);border:1px solid #86efac}.badge.pre10{background:#fef3c7;color:var(--amber-dark);border:1px solid #fcd34d}.badge.unconfirmed{background:#fee2e2;color:var(--red);border:1px solid #fca5a5}.badge.new10{background:#ccfbf1;color:var(--teal-dark);border:1px solid #5eead4}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:.95rem;background:var(--card)}td,th{border:1px solid var(--border);padding:8px 12px;text-align:left}th{background:var(--night);color:#fff;font-weight:600}tr:nth-child(2n) td{background:#f8fafc}.chain{list-style:none;padding:0;margin:12px 0 0}.chain li{padding:10px 14px;background:var(--card);border:1px solid var(--border);border-left:3px solid var(--teal);margin-bottom:8px;border-radius:0 8px 8px 0}.prose h2{margin-top:28px}.prose li,.prose p{color:var(--ink)}.note{font-size:.9rem;color:var(--ink-soft)}.site-footer{background:var(--night);color:#aebacd;padding:28px 0 36px;font-size:.9rem}.site-footer a{color:#8ef0e2}.site-footer .disclaimer{font-size:.8rem;color:#74809a}@media (max-width:560px){.calc-row{flex-direction:column;align-items:stretch}}