:root {
  --ink: #0d1b2a;
  --text: #1c2733;
  --muted: #56636f;
  --paper: #f5f6f3;
  --surface: #ffffff;
  --line: #dde1dc;
  --go: #0e8a55;
  --go-bg: #e3f3eb;
  --warn: #b25e00;
  --warn-bg: #fff1dc;
  --bad: #b3261e;
  --bad-bg: #fce9e7;
  --fold: #8a97a3;
  --accent: #0d1b2a;
  --on-accent: #ffffff;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(13,27,42,.06), 0 8px 24px rgba(13,27,42,.06);
  --display: "Bricolage Grotesque", "Avenir Next Condensed", "Helvetica Neue", Arial, sans-serif;
  --body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink: #e8edf1; --text: #d9e0e6; --muted: #9aa7b2; --paper: #0b141d; --surface: #111d28;
    --line: #22313e; --go: #3ccf8e; --go-bg: #0f2c20; --warn: #ffb35c; --warn-bg: #33230d;
    --bad: #ff8a80; --bad-bg: #3a1512; --accent: #e8edf1; --on-accent: #0b141d; --shadow: none;
  }
}
:root[data-theme="dark"] {
  --ink: #e8edf1; --text: #d9e0e6; --muted: #9aa7b2; --paper: #0b141d; --surface: #111d28;
  --line: #22313e; --go: #3ccf8e; --go-bg: #0f2c20; --warn: #ffb35c; --warn-bg: #33230d;
  --bad: #ff8a80; --bad-bg: #3a1512; --accent: #e8edf1; --on-accent: #0b141d; --shadow: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--text); font: 16px/1.6 var(--body); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
h1, h2, h3 { color: var(--ink); line-height: 1.15; margin: 0 0 .5em; }
h1, h2 { font-family: var(--display); letter-spacing: -0.025em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 800; }
h1 em { font-style: normal; color: var(--go); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.small { font-size: .875rem; color: var(--muted); }
.mono, code, pre { font-family: var(--mono); font-weight: 500; }
.dim { color: var(--muted); font-weight: 500; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; background: var(--surface); padding: 8px 12px; z-index: 10; }
:focus-visible { outline: 3px solid var(--go); outline-offset: 2px; border-radius: 4px; }

.nav { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.nav-in { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 8px; font: 800 1.3rem/1 var(--display); letter-spacing: -0.02em; text-decoration: none; color: var(--ink); }
.logo .dim { font-weight: 500; }
.nav nav { display: flex; gap: 22px; align-items: center; }
.nav nav a { text-decoration: none; font-size: .95rem; color: var(--muted); }
.nav nav a:hover { color: var(--ink); }
.nav nav a.btn { color: var(--on-accent); }

.btn { display: inline-block; background: var(--accent); color: var(--on-accent); border: 0; border-radius: 10px; padding: 13px 20px; font: 600 1rem var(--body); text-decoration: none; cursor: pointer; }
.btn:hover { opacity: .9; }
.btn:disabled { opacity: .5; cursor: wait; }
.btn-sm { padding: 8px 14px; font-size: .9rem; }
.btn-ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--line); }

.hero { padding: 72px 0 56px; }
.hero-in { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.eyebrow { font: 500 .8rem var(--mono); letter-spacing: .08em; color: var(--muted); text-transform: uppercase; }
.lede { font-size: 1.15rem; color: var(--muted); max-width: 36em; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 24px 0 12px; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; }
.fc-head { display: flex; justify-content: space-between; align-items: start; gap: 12px; margin-bottom: 12px; }
.fc-name { font-weight: 700; color: var(--ink); }
.pill { font-size: .78rem; font-weight: 600; padding: 4px 10px; border-radius: 999px; white-space: nowrap; }
.pill-go { background: var(--go-bg); color: var(--ink); }
.pill-warn { background: var(--warn-bg); color: var(--ink); }
.pill-bad { background: var(--bad-bg); color: var(--ink); }
.fc-list { list-style: none; margin: 0; padding: 0; }
.fc-list li { display: grid; grid-template-columns: 12px 1fr auto; column-gap: 10px; align-items: center; padding: 9px 0; border-top: 1px solid var(--line); font-size: .92rem; }
.fc-list .mono { grid-column: 2; font-size: .75rem; color: var(--muted); }
.fc-list .st { grid-column: 3; grid-row: 1 / span 2; font-size: .82rem; font-weight: 600; color: var(--muted); }
.dot { width: 9px; height: 9px; border-radius: 50%; grid-row: 1 / span 2; }
.dot.go { background: var(--go); }
.dot.warn { background: var(--warn); }
.dot.bad { background: var(--bad); }
li:has(.dot.warn) .st { color: var(--warn); }
li:has(.dot.bad) .st { color: var(--bad); }
.fc-foot { margin-top: 10px; }

.alert-band { background: var(--warn-bg); border-block: 1px solid var(--line); }
.alert-in { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: baseline; padding-block: 14px; color: var(--text); }
.alert-in strong { color: var(--warn); }
.cite { font-family: var(--mono); font-weight: 500; }

.section { padding: 80px 0; }
.section.alt { background: var(--surface); border-block: 1px solid var(--line); }
.sub { color: var(--muted); max-width: 44em; margin-bottom: 36px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 24px; }
.step { border-top: 2px solid var(--ink); padding-top: 16px; }
.num { font: 500 .85rem var(--mono); color: var(--muted); margin-bottom: 8px; }
.step p, .grid3 p { color: var(--muted); font-size: .95rem; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.checks { list-style: none; padding: 0; margin: 20px 0 0; }
.checks li { padding: 8px 0 8px 30px; position: relative; }
.checks li::before { content: ""; position: absolute; left: 2px; top: 12px; width: 8px; height: 14px; border-right: 2.5px solid var(--ink); border-bottom: 2.5px solid var(--ink); transform: rotate(45deg); }
.quote .big { font: 600 1.45rem/1.35 var(--display); letter-spacing: -0.015em; color: var(--ink); }
.quote em { font-style: normal; color: var(--go); }
.mono-card pre { margin: 0; font-size: .88rem; line-height: 1.9; overflow-x: auto; color: var(--text); }

.foot { padding: 36px 0; border-top: 1px solid var(--line); font-size: .9rem; }
.foot-in { display: flex; gap: 24px; justify-content: space-between; align-items: center; flex-wrap: wrap; }
.foot-in .small { max-width: 34em; }
.foot nav { display: flex; gap: 18px; }

.prose { max-width: 720px; padding-block: 56px; }
.prose h1 { font-size: 2.2rem; }
.prose h2 { font-family: var(--body); }
.prose h2 { font-size: 1.3rem; margin-top: 1.6em; }

@media (max-width: 900px) {
  .hero-in, .two { grid-template-columns: 1fr; gap: 32px; }
  .grid4 { grid-template-columns: 1fr 1fr; }
  .grid3 { grid-template-columns: 1fr; }
  .nav nav a:not(.btn) { display: none; }
}
@media (max-width: 520px) {
  .grid4 { grid-template-columns: 1fr; }
  .hero { padding-top: 40px; }
  .section { padding: 56px 0; }
}