/* MarginKit — shared styles. System fonts only (fast LCP, no layout shift). */
:root{
  --ink:#0f1b2d; --ink-2:#3a4a5f; --muted:#6b7a8f;
  --bg:#f6f4ef; --card:#ffffff; --line:#e4e0d6;
  --accent:#e8792b; --accent-ink:#9a4510; --accent-soft:#fdf0e6;
  --good:#1f8a5b; --good-soft:#e7f5ee; --bad:#c2402e; --bad-soft:#fbeceA;
  --radius:14px; --shadow:0 1px 2px rgba(15,27,45,.06),0 8px 24px rgba(15,27,45,.06);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px}
a{color:var(--accent-ink)}
img{max-width:100%}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}

/* Header */
.site-head{background:var(--ink);color:#fff}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px;flex-wrap:wrap}
.logo{color:#fff;text-decoration:none;font-weight:800;font-size:1.15rem;letter-spacing:-.01em;display:flex;align-items:center;gap:8px}
.logo b{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--accent);color:var(--ink);font-size:.95rem}
.nav{display:flex;gap:18px;flex-wrap:wrap}
.nav a{color:#cfd8e3;text-decoration:none;font-size:.92rem}
.nav a:hover,.nav a[aria-current=page]{color:#fff}

/* Hero */
.hero{padding:36px 0 8px}
.crumbs{font-size:.85rem;color:var(--muted);margin-bottom:8px}
.crumbs a{color:var(--muted)}
h1{font-size:clamp(1.7rem,4vw,2.4rem);line-height:1.15;margin:0 0 10px;letter-spacing:-.02em}
.lede{color:var(--ink-2);font-size:1.08rem;max-width:720px;margin:0}

/* Tool layout */
.tool{display:grid;grid-template-columns:1.1fr .9fr;gap:20px;margin:24px 0 8px;align-items:start}
@media (max-width:860px){.tool{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.card h2{font-size:1.05rem;margin:0 0 14px}
.card h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:18px 0 10px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.grid2>*,.grid3>*{min-width:0}
@media (max-width:520px){.grid3{gap:8px}.grid3 label{font-size:.78rem}}
label{display:block;font-size:.85rem;font-weight:600;color:var(--ink-2);margin-bottom:5px}
.hint{font-weight:400;color:var(--muted);font-size:.78rem}
input,select{width:100%;font:inherit;font-size:1rem;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink)}
input:focus,select:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}
.field{margin-bottom:12px}
.pre{position:relative}
.pre span{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--muted);pointer-events:none}
.pre input{padding-left:26px}
.check{display:flex;align-items:center;gap:8px;font-weight:500;font-size:.9rem}
.check input{width:auto}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font:inherit;font-weight:700;padding:11px 16px;border-radius:10px;border:0;background:var(--accent);color:var(--ink);cursor:pointer}
.btn:hover{filter:brightness(.95)}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--ink-2);font-weight:600}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.chip{font:inherit;font-size:.82rem;padding:6px 11px;border-radius:999px;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--ink-2)}
.chip:hover,.chip.on{border-color:var(--accent);background:var(--accent-soft);color:var(--accent-ink)}

/* Results */
.results{position:sticky;top:16px}
.big{font-size:2.3rem;font-weight:800;letter-spacing:-.02em;line-height:1.1;margin:4px 0}
.big.good{color:var(--good)} .big.bad{color:var(--bad)}
.sub{color:var(--muted);font-size:.88rem}
.kpis{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:14px 0}
.kpi{background:var(--bg);border-radius:10px;padding:10px 12px}
.kpi .k{font-size:.75rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.kpi .v{font-size:1.2rem;font-weight:700}
table.break{width:100%;border-collapse:collapse;font-size:.92rem}
table.break td{padding:7px 0;border-bottom:1px dashed var(--line)}
table.break td:last-child{text-align:right;font-variant-numeric:tabular-nums}
table.break tr.total td{border-bottom:0;font-weight:800;padding-top:10px}
.bar{display:flex;height:12px;border-radius:999px;overflow:hidden;background:var(--line);margin:12px 0 6px}
.bar i{display:block;height:100%}
.legend{display:flex;flex-wrap:wrap;gap:10px;font-size:.78rem;color:var(--muted)}
.legend span::before{content:"";display:inline-block;width:9px;height:9px;border-radius:2px;margin-right:5px;background:var(--c)}
.note{font-size:.8rem;color:var(--muted);margin-top:12px}
.alert{border-radius:10px;padding:10px 12px;font-size:.88rem;margin-top:10px}
.alert.warn{background:var(--accent-soft);color:var(--accent-ink)}
.alert.ok{background:var(--good-soft);color:var(--good)}
.alert.err{background:#fbeceb;color:var(--bad)}
.out{font-family:var(--mono);font-size:.88rem;word-break:break-all;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:12px;min-height:60px}

/* Affiliate / CTA */
.promo{display:flex;gap:14px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:var(--ink);color:#fff;border-radius:var(--radius);padding:18px 20px;margin:20px 0}
.promo p{margin:0;max-width:640px;color:#d7dee7}
.promo strong{color:#fff}
.promo .btn{white-space:nowrap}
.disclose{font-size:.75rem;color:var(--muted);margin:-10px 0 20px}

/* Article */
.article{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px clamp(18px,4vw,40px);margin:24px 0}
.article h2{font-size:1.45rem;margin:28px 0 10px;letter-spacing:-.01em}
.article h2:first-child{margin-top:0}
.article h3{font-size:1.1rem;margin:20px 0 6px}
.article p,.article li{color:var(--ink-2)}
.article table{width:100%;border-collapse:collapse;font-size:.92rem;margin:12px 0}
.article th,.article td{border:1px solid var(--line);padding:8px 10px;text-align:left}
.article th{background:var(--bg)}
.formula{font-family:var(--mono);background:var(--bg);border-left:3px solid var(--accent);padding:10px 14px;border-radius:6px;font-size:.92rem}
details{border-bottom:1px solid var(--line);padding:12px 0}
details summary{cursor:pointer;font-weight:700;color:var(--ink)}
details p{margin:8px 0 0}

/* Related + home */
.related{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;margin:12px 0 30px}
.tile{display:block;text-decoration:none;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);transition:transform .12s}
.tile:hover{transform:translateY(-2px);border-color:var(--accent)}
.tile .tag{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:var(--accent-ink);font-weight:700}
.tile h3{margin:6px 0 4px;font-size:1.05rem}
.tile p{margin:0;color:var(--muted);font-size:.9rem}
.tile.soon{opacity:.6;pointer-events:none}
.section-title{font-size:1.25rem;margin:30px 0 4px}

/* Footer */
.site-foot{border-top:1px solid var(--line);margin-top:40px;padding:26px 0;color:var(--muted);font-size:.85rem}
.site-foot .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.site-foot a{color:var(--muted)}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* Mobile sticky result bar */
.mbar{display:none}
@media (max-width:860px){
  .results{position:static}
  .mbar{display:flex;justify-content:space-between;align-items:center;position:fixed;left:0;right:0;bottom:0;z-index:10;background:var(--ink);color:#fff;padding:12px 20px calc(12px + env(safe-area-inset-bottom));text-decoration:none;font-size:.95rem;box-shadow:0 -4px 16px rgba(0,0,0,.15)}
  .mbar b{font-size:1.15rem;color:#ffb37a}
  body.has-mbar{padding-bottom:64px}
}