:root {
  --bg: #050607; --bg-elev: #0b0f10; --bg-card: #101514;
  --line: rgba(255,255,255,0.06); --line-strong: rgba(255,255,255,0.12);
  --ink: #faf2e1; --ink-mute: #b5bdb1; --ink-faint: #737c73;
  --accent: #4c7dff; --accent-strong: #9db6ff; --good: #7ef0d2; --bad: #ff6b91;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.55; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: 980px; margin: 0 auto; padding: 0 32px; }
.wrap-wide { max-width: 1180px; margin: 0 auto; padding: 0 32px; }
@media (max-width: 720px) { .wrap, .wrap-wide { padding: 0 20px; } }

header.site { position: sticky; top: 0; z-index: 60; background: rgba(8,9,8,0.78); backdrop-filter: saturate(160%) blur(14px); border-bottom: 1px solid var(--line); }
header.site .row { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 32px; }
header.site .left { display: flex; align-items: center; gap: 36px; }
header.site .brand { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); font-weight: 540; font-size: 16px; }
header.site nav { display: flex; gap: 22px; }
header.site nav a { color: var(--ink-mute); font-size: 13.5px; }
header.site nav a:hover { color: var(--ink); }
header.site .right { display: flex; align-items: center; gap: 14px; }
header.site .right .ghost { color: var(--ink-mute); font-size: 13.5px; }
header.site .right .cta { color: var(--bg); background: var(--ink); border-radius: 6px; padding: 7px 14px; font-size: 13px; font-weight: 540; }
@media (max-width: 720px) { header.site nav { display: none; } }

section.hero { padding: 72px 0 28px; }
.crumbs { font-family: var(--mono); font-size: 11px; text-transform: uppercase; color: var(--ink-faint); letter-spacing: 0.05em; margin-bottom: 16px; }
.crumbs a { color: var(--ink-mute); }
.crumbs a:hover { color: var(--ink); }
.pill { display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 11px; text-transform: uppercase; color: var(--ink-mute); border: 1px solid var(--line-strong); border-radius: 999px; padding: 5px 12px; background: var(--bg-elev); }
h1 { margin: 18px 0 14px; font-size: clamp(32px, 4.4vw, 44px); line-height: 1.08; font-weight: 500; max-width: 24ch; }
h1 .tone { color: var(--accent); }
p.lede { margin: 0 0 22px; font-size: 16.5px; line-height: 1.55; color: var(--ink-mute); max-width: 64ch; }

.meta-row { display: flex; flex-wrap: wrap; gap: 18px 28px; margin: 18px 0 0; padding: 14px 18px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg-elev); }
.meta-row .item { font-size: 13px; }
.meta-row .item .label { font-family: var(--mono); font-size: 10.5px; text-transform: uppercase; color: var(--ink-faint); letter-spacing: 0.05em; display: block; margin-bottom: 4px; }
.meta-row .item .value { color: var(--ink); font-family: var(--mono); font-size: 13px; }

.group { margin: 48px 0 0; padding-top: 28px; border-top: 1px solid var(--line); }
.group h2 { margin: 0 0 12px; font-size: clamp(20px, 2.2vw, 26px); font-weight: 540; }
.group p { margin: 0 0 12px; color: var(--ink-mute); font-size: 15px; line-height: 1.65; max-width: 64ch; }

pre.code { font-family: var(--mono); font-size: 13px; line-height: 1.55; background: var(--bg-card); border: 1px solid var(--line); border-radius: 8px; padding: 16px 18px; overflow-x: auto; color: var(--ink); margin: 14px 0; white-space: pre; }
@media (max-width: 720px) { pre.code { white-space: pre-wrap; word-break: break-word; } }
pre.code .c { color: var(--ink-faint); }
pre.code .ok { color: var(--good); }
pre.code .k { color: var(--accent-strong); }
pre.code .bad { color: var(--bad); }

.pair { margin: 14px 0 0; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.pair .pair-h { font-family: var(--mono); font-size: 11px; text-transform: uppercase; color: var(--ink-faint); padding: 8px 14px; background: var(--bg-elev); border-bottom: 1px solid var(--line); letter-spacing: 0.04em; }
.pair pre { margin: 0; border: 0; border-radius: 0; }
.pair pre + .pair-h { border-top: 1px solid var(--line); }

.lat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 14px 0 0; }
@media (max-width: 720px) { .lat-grid { grid-template-columns: repeat(2, 1fr); } }
.lat-grid .cell { padding: 14px 16px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg-elev); }
.lat-grid .cell .h { font-family: var(--mono); font-size: 10.5px; text-transform: uppercase; color: var(--ink-faint); letter-spacing: 0.05em; margin-bottom: 6px; }
.lat-grid .cell .v { font-family: var(--mono); font-size: 17px; color: var(--ink); font-weight: 540; }
.lat-grid .cell .u { font-family: var(--mono); font-size: 11px; color: var(--ink-mute); margin-left: 4px; }

.k-bar { display: flex; align-items: center; gap: 14px; margin: 14px 0 0; padding: 16px 18px; border: 1px solid var(--line-strong); border-radius: 10px; background: linear-gradient(90deg, rgba(126,240,210,0.05), rgba(126,240,210,0.01)); }
.k-bar .k-label { font-family: var(--mono); font-size: 11px; text-transform: uppercase; color: var(--ink-faint); letter-spacing: 0.05em; }
.k-bar .k-value { font-family: var(--mono); font-size: 22px; color: var(--good); font-weight: 540; }
.k-bar .k-detail { font-size: 13px; color: var(--ink-mute); margin-left: auto; }

.related { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 14px 0 0; }
@media (max-width: 720px) { .related { grid-template-columns: 1fr; } }
.related a { padding: 14px 16px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg-elev); display: block; transition: border-color 120ms ease; }
.related a:hover { border-color: var(--line-strong); }
.related a .h { font-size: 14px; color: var(--ink); font-weight: 540; margin-bottom: 4px; }
.related a .d { font-size: 12.5px; color: var(--ink-faint); }

footer.site { padding: 48px 0 36px; border-top: 1px solid var(--line); font-family: var(--mono); font-size: 11px; color: var(--ink-faint); }
footer.site .row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
footer.site a { color: var(--ink-mute); }