/* Shared styles for blog pages. Tokens match index.html. */
:root{
  --bg:#EEF2F1; --surface:#FFFFFF; --ink:#12201E; --muted:#56655F; --line:#D3DCD9;
  --accent:#0E7C66; --accent-ink:#FFFFFF; --signal:#E8A317; --loss:#B4432F;
  --display:"Bricolage Grotesque",ui-sans-serif,system-ui,sans-serif;
  --body:"Figtree",ui-sans-serif,system-ui,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Menlo,monospace;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0D1614; --surface:#15211E; --ink:#E6EFEC; --muted:#93A59F; --line:#26352F;
  --accent:#3CC9A6; --accent-ink:#06201A; --signal:#F2B84B; --loss:#E57860; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0D1614; --surface:#15211E; --ink:#E6EFEC; --muted:#93A59F; --line:#26352F;
  --accent:#3CC9A6; --accent-ink:#06201A; --signal:#F2B84B; --loss:#E57860; color-scheme:dark}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.0625rem/1.7 var(--body);padding-inline:16px}
.wrap{max-width:1080px;margin-inline:auto}
h1,h2,h3{font-family:var(--display);text-wrap:balance;line-height:1.1}
a{color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.eyebrow{font:600 .75rem/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}

nav{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-block:22px}
.logo{font:800 1.5rem/1 var(--display);letter-spacing:-.02em;display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none}
.logo svg{width:28px;height:28px}
nav .links{display:flex;gap:20px}
nav .links a{color:var(--muted);font-weight:500;text-decoration:none}
nav .links a:hover,nav .links a[aria-current]{color:var(--ink)}

/* Blog index */
.index-head{padding-block:40px 24px}
.index-head h1{font-size:clamp(2.4rem,5.5vw,3.6rem);font-weight:800;letter-spacing:-.035em;margin:12px 0 0}
.index-head p{color:var(--muted);font-size:1.15rem;max-width:34em;margin:16px 0 0}
.posts{list-style:none;margin:0 0 72px;padding:0;border-top:1px solid var(--line)}
.posts li{border-bottom:1px solid var(--line)}
.posts a{display:grid;gap:8px;padding-block:28px;text-decoration:none;color:var(--ink)}
.posts h2{font-size:clamp(1.4rem,3vw,1.8rem);font-weight:800;letter-spacing:-.02em;margin:0}
.posts a:hover h2{color:var(--accent)}
.posts p{margin:0;color:var(--muted);max-width:44em}

/* Article */
article{max-width:720px;margin-inline:auto;padding-block:32px 72px}
article > header h1{font-size:clamp(2.2rem,5vw,3.2rem);font-weight:800;letter-spacing:-.03em;margin:14px 0 0}
article > header .dek{color:var(--muted);font-size:1.2rem;line-height:1.55;margin:16px 0 0}
article > header .meta{margin:18px 0 0;color:var(--muted);font:500 .85rem/1.4 var(--mono)}
article h2{font-size:1.65rem;font-weight:800;letter-spacing:-.02em;margin:52px 0 12px}
article h3{font-size:1.2rem;font-weight:800;margin:32px 0 8px}
article p,article ul,article ol{margin:0 0 18px}
article li{margin-block:6px}
article strong{font-weight:600}

.tldr{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:12px;padding:18px 22px;margin:32px 0}
.tldr p:last-child,.tldr ul:last-child{margin-bottom:0}

.table{overflow-x:auto;margin:20px 0 24px}
table{width:100%;min-width:460px;border-collapse:collapse;font-size:.98rem;background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden}
th,td{text-align:left;vertical-align:top;padding:11px 14px;border-bottom:1px solid var(--line)}
td.r,th.r{text-align:right}
tr:last-child td{border-bottom:0}
th{color:var(--muted);font:600 .75rem/1.3 var(--mono);letter-spacing:.08em;text-transform:uppercase}
tfoot td{font-weight:600}

/* Inline calculator */
.calc{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:24px;margin:28px 0 32px}
.calc .fields{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.calc .field{display:grid;gap:6px;min-width:0}
.calc label{font-size:.85rem;color:var(--muted);font-weight:500}
.calc input{font:600 1.15rem var(--mono);color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:12px 14px;width:100%}
.calc input:focus{outline:2px solid var(--accent);border-color:transparent}
.calc .out{margin-top:20px;padding-top:18px;border-top:1px dashed var(--line);display:grid;gap:10px}
.calc .line{display:flex;justify-content:space-between;gap:12px}
.calc .line span:first-child{color:var(--muted)}
.calc .line.total{align-items:end}
.calc .line.total b{font:600 2rem/1 var(--mono);color:var(--accent);letter-spacing:-.02em}
.calc .warn{font-size:.92rem;color:var(--muted);background:var(--bg);border-radius:8px;padding:10px 12px;margin:4px 0 0}
.calc .warn b{color:var(--ink)}

.cta{background:var(--ink);color:var(--bg);border-radius:14px;padding:28px;margin:48px 0 0;display:grid;gap:12px}
.cta h2{margin:0;font-size:1.5rem;color:inherit}
.cta p{margin:0;opacity:.85}
.cta a{color:inherit}

.fine{font-size:.9rem;color:var(--muted)}
.sources{font-size:.92rem;color:var(--muted)}
.sources li{margin-block:4px}

footer{padding-block:28px 40px;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
footer a{color:var(--muted)}

@media (max-width:520px){
  nav .links{gap:14px}
  table{min-width:0;font-size:.9rem}
  th,td{padding:10px 8px}
  th{letter-spacing:.04em;font-size:.68rem}
  .calc .fields{grid-template-columns:1fr}
  .calc .line.total b{font-size:1.7rem}
}