:root{--ink:#14213d;--muted:#5b6475;--line:#e3e1da;--bg:#faf8f3;--card:#fff;--acc:#0f766e;--acc2:#e6f3f1;--hi:#f2b705;--r:14px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--acc)}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
header.top{background:var(--ink);color:#fff}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;min-height:60px;gap:12px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-weight:800;font-size:21px;letter-spacing:-.02em}
.logo b{font-weight:800}.logo b span{font-weight:400;color:#c9d2e3}.logo b i{font-style:normal;color:#2dd4bf}
nav.main a{color:#dfe5f2;text-decoration:none;margin-left:20px;font-size:15px}
nav.main a:hover{color:#fff}
#nav-toggle{display:none;background:none;border:1px solid #ffffff55;color:#fff;border-radius:8px;padding:6px 10px;font-size:15px}
.hero{padding:36px 0 8px}
.crumbs{font-size:14px;color:var(--muted);margin-bottom:6px}
.crumbs a{color:var(--muted)}
h1{font-size:clamp(28px,4.5vw,42px);line-height:1.15;letter-spacing:-.025em;margin:0 0 10px}
h2{font-size:24px;letter-spacing:-.015em;margin:44px 0 12px}
h3{font-size:18px;margin:24px 0 8px}
.lead{font-size:18px;color:var(--muted);max-width:720px;margin:0}
.grid{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;margin-top:24px;align-items:start}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
#calc label{display:block;font-size:14px;font-weight:600;margin:14px 0 6px}
.seg{display:flex;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:4px;gap:4px}
.seg button{flex:1;border:0;background:none;padding:10px;border-radius:7px;font:inherit;font-weight:600;color:var(--muted);cursor:pointer}
.seg button.on{background:var(--ink);color:#fff}
.rates{display:flex;flex-wrap:wrap;gap:8px}
.rates button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 14px;font:inherit;font-weight:600;cursor:pointer;font-variant-numeric:tabular-nums}
.rates button.on{border-color:var(--acc);background:var(--acc2);color:var(--acc)}
.inrow{display:flex;gap:10px}
input,select{width:100%;font:inherit;font-size:20px;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);font-variant-numeric:tabular-nums}
input:focus,select:focus{outline:2px solid var(--acc);border-color:var(--acc)}
.small input,.small select{font-size:16px;padding:9px 12px}
.out{display:grid;gap:10px}
.out div{display:flex;justify-content:space-between;align-items:baseline;border-bottom:1px dashed var(--line);padding:10px 0}
.out span{color:var(--muted)}
.out strong{font-size:22px;font-variant-numeric:tabular-nums}
.out .total strong{font-size:28px;color:var(--acc)}
#out-share{font-size:14px;color:var(--muted);margin:12px 0}
.btn{display:inline-block;border:1px solid var(--ink);background:var(--ink);color:#fff;border-radius:10px;padding:10px 16px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none}
.btn.ghost{background:none;color:var(--ink)}
table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;font-variant-numeric:tabular-nums}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:#f3f1ea;font-size:14px}
tr:last-child td{border-bottom:0}
.tw{overflow-x:auto;-webkit-overflow-scrolling:touch}
.formula{background:#fff;border-left:4px solid var(--hi);padding:14px 18px;border-radius:0 10px 10px 0;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:15px}
.note{background:var(--acc2);border-radius:var(--r);padding:16px 20px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.chips a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 12px;text-decoration:none;color:var(--ink);font-size:15px}
.chips a:hover{border-color:var(--acc)}
.search{max-width:380px;margin:12px 0 16px}
.cols{columns:3 220px;column-gap:24px}
.cols a{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink);break-inside:avoid}
.cols a em{font-style:normal;color:var(--acc);font-weight:700;font-variant-numeric:tabular-nums}
details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 18px;margin-bottom:10px}
summary{font-weight:600;cursor:pointer}
footer{margin-top:64px;border-top:1px solid var(--line);padding:28px 0;font-size:14px;color:var(--muted)}
footer a{color:var(--muted);margin-right:14px}
.muted{color:var(--muted);font-size:14px}
@media(max-width:820px){
 .grid{grid-template-columns:1fr}
 #nav-toggle{display:block}
 nav.main{display:none;position:absolute;top:60px;left:0;right:0;background:var(--ink);padding:8px 16px 16px;z-index:5}
 .nav-open nav.main{display:block}
 nav.main a{display:block;margin:0;padding:10px 0}
 h2{margin-top:36px}
}