:root {
  --bg: #fbfaf7;
  --bg-alt: #f3f1ec;
  --surface: #ffffff;
  --ink: #13201c;
  --ink-2: #3d4a45;
  --muted: #5f6b66;
  --line: #dfe2dd;
  --accent: #12302a;
  --accent-ink: #ffffff;
  --accent-soft: #e4efe9;
  --green: #2f7a55;
  --red: #b4533a;
  --red-soft: #fbeee8;
  --amber: #b7791f;
  --code-bg: #0f231e;
  --code-ink: #d9e7e1;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(19, 32, 28, .05), 0 12px 32px -18px rgba(19, 32, 28, .25);
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c1714; --bg-alt: #101e1a; --surface: #13241f; --ink: #e8efec; --ink-2: #c2cdc8;
    --muted: #93a19b; --line: #23372f; --accent: #cfe7dc; --accent-ink: #0c1714;
    --accent-soft: #173029; --red-soft: #2a1a15; --code-bg: #07100d;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px -18px rgba(0, 0, 0, .6);
  }
  .hero-figure img, .diagram img { border-color: #23372f; }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 var(--sans); }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
code { font-family: var(--mono); font-size: .92em; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 3px; border-radius: 4px; }

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; background: var(--surface); padding: 8px 12px; z-index: 10; }

.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding-inline: 24px; }
.narrow { max-width: 760px; }
.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }

.site-header { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--line); }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -.01em; text-decoration: none; color: var(--ink); }
.nav { display: flex; align-items: center; gap: 22px; font-size: .94rem; }
.nav a { text-decoration: none; color: var(--ink-2); }
.nav a:hover { color: var(--ink); }
.nav-gh { border: 1px solid var(--line); padding: 6px 12px; border-radius: 999px; background: var(--surface); }

.eyebrow { font: 600 .74rem/1.2 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin: 0 0 14px; }
.eyebrow a { text-decoration: none; }
h1, h2, h3 { letter-spacing: -.022em; line-height: 1.15; margin: 0 0 16px; }
h1 { font-size: clamp(2.2rem, 5.2vw, 3.7rem); font-weight: 720; max-width: 17ch; }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); font-weight: 700; max-width: 24ch; }
h3 { font-size: 1.05rem; font-weight: 650; }
p { margin: 0 0 16px; color: var(--ink-2); }
.lede { font-size: clamp(1.08rem, 1.8vw, 1.25rem); color: var(--ink-2); max-width: 62ch; }
.lede-sm { max-width: 70ch; }

.hero { padding-block: 72px 56px; }
.hero-figure { margin: 48px 0 0; }
.hero-figure figcaption { font-size: .8rem; color: var(--muted); margin-top: 10px; }
.hero-figure img, .diagram img { border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); width: 100%; }

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.cta-center { justify-content: center; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 20px; border-radius: 10px; font-weight: 600; font-size: .95rem; text-decoration: none; border: 1px solid transparent; transition: transform .15s ease, background .15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-secondary { background: var(--surface); border-color: var(--line); color: var(--ink); }
.btn-ghost { color: var(--ink-2); padding-inline: 12px; }

.section { padding-block: 88px; border-top: 1px solid var(--line); }
.section-alt { background: var(--bg-alt); }
.section-quote { padding-block: 96px; }
.big-quote { font-size: clamp(1.8rem, 4vw, 2.9rem); font-weight: 700; letter-spacing: -.025em; line-height: 1.15; color: var(--ink); margin: 0 auto 20px; max-width: 20ch; }
.link { font-weight: 600; text-decoration: none; border-bottom: 1px solid var(--line); }
.link:hover { border-color: var(--ink); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
/* Grid items default to min-width:auto; wide code would otherwise push past narrow viewports. */
.two-col > *, .steps > *, .status-grid > *, .link-grid > *, .footer-grid > * { min-width: 0; }
.flow code, .diff-row, .status-col li, .card-link span { overflow-wrap: anywhere; }
.two-col-media { grid-template-columns: 5fr 6fr; }

.flows { display: grid; gap: 12px; }
.flow { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.flow code { display: block; font-size: .86rem; line-height: 1.6; color: var(--ink); white-space: normal; }
.flow-label { display: block; font: 600 .7rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.flow-warn { border-color: #e9bfae; background: var(--red-soft); }
.flow-warn strong { color: var(--red); }
.flow-key { background: var(--accent); border-color: var(--accent); }
.flow-key code, .flow-key .flow-label { color: var(--accent-ink); }
.flow-key .flow-label { opacity: .75; }

.steps { list-style: none; padding: 0; margin: 36px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.steps li { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.steps p { margin: 0; font-size: .95rem; }
.step-n { display: block; font: 600 .78rem/1 var(--mono); color: var(--green); margin-bottom: 14px; }

.diff { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin: 8px 0 22px; }
.diff-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; font: .88rem/1.5 var(--mono); }
.diff-key { color: var(--ink); }
.diff-val del { color: var(--muted); }
.diff-val ins { color: var(--red); text-decoration: none; font-weight: 700; }
.diff-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.badge { font: 600 .7rem/1 var(--mono); letter-spacing: .06em; padding: 6px 9px; border-radius: 6px; background: var(--bg-alt); color: var(--ink-2); border: 1px solid var(--line); }
.badge-red { background: var(--red-soft); color: var(--red); border-color: #e9bfae; }
.badge-green { background: var(--accent-soft); color: var(--green); border-color: #bcd9c9; }
.ticks { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.ticks li { padding-left: 22px; position: relative; color: var(--ink-2); }
.ticks li::before { content: ""; position: absolute; left: 2px; top: .62em; width: 8px; height: 8px; border-radius: 2px; background: var(--green); }

.shot { margin: 0; }
.shot img { border-radius: var(--radius); border: 1px solid var(--line); box-shadow: var(--shadow); max-height: 560px; object-fit: cover; object-position: top left; width: 100%; }
.shot figcaption { font-size: .8rem; color: var(--muted); margin-top: 10px; }
.diagram { margin: 32px 0 20px; }

.code { margin: 0; background: var(--code-bg); color: var(--code-ink); border-radius: var(--radius); padding: 22px 24px; overflow-x: auto; font: .86rem/1.7 var(--mono); box-shadow: var(--shadow); }
.code code { font-size: inherit; }
.neq { color: var(--red); }

.status-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 32px 0 20px; }
.status-col { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.status-col ul { margin: 0 0 12px; padding-left: 18px; color: var(--ink-2); font-size: .95rem; display: grid; gap: 6px; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 8px; vertical-align: 1px; }
.dot-green { background: var(--green); } .dot-amber { background: var(--amber); } .dot-grey { background: var(--muted); }

.link-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 28px; }
.card-link { display: grid; gap: 4px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; text-decoration: none; transition: border-color .15s ease, transform .15s ease; }
.card-link:hover { border-color: var(--ink-2); transform: translateY(-1px); }
.card-link span { color: var(--muted); font-size: .92rem; }

.article { padding-block: 64px 88px; }
.article h1 { max-width: 22ch; }
.prose { margin-top: 36px; }
.prose h2 { font-size: 1.5rem; margin-top: 44px; max-width: none; }
.prose h3 { margin-top: 28px; }
.prose p, .prose li { color: var(--ink-2); }
.prose ul, .prose ol { padding-left: 22px; margin: 0 0 18px; display: grid; gap: 6px; }
.prose blockquote { margin: 24px 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--green); }
.prose blockquote p { color: var(--ink); font-size: 1.1rem; font-weight: 600; }
.prose pre { background: var(--code-bg); color: var(--code-ink); padding: 18px 20px; border-radius: var(--radius); overflow-x: auto; font: .85rem/1.65 var(--mono); }
.prose :not(pre) > code { background: var(--bg-alt); border: 1px solid var(--line); padding: 1px 5px; border-radius: 5px; }
.prose table { width: 100%; border-collapse: collapse; margin: 20px 0 24px; font-size: .93rem; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose th { font-weight: 650; color: var(--ink); }
.prose a { color: var(--ink); text-decoration-color: var(--muted); text-underline-offset: 3px; }
.article-foot { margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--line); font-size: .92rem; }

.posts { list-style: none; padding: 0; margin: 36px 0 0; display: grid; gap: 14px; }
.posts a { display: grid; gap: 6px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; text-decoration: none; }
.posts a:hover { border-color: var(--ink-2); }
.post-title { font-weight: 650; font-size: 1.15rem; color: var(--ink); }
.post-desc { color: var(--ink-2); }
.posts time { font: .8rem var(--mono); color: var(--muted); }

.site-footer { border-top: 1px solid var(--line); padding-block: 48px 32px; background: var(--bg); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.footer-grid nav { display: grid; gap: 8px; align-content: start; font-size: .93rem; }
.footer-grid nav a { text-decoration: none; color: var(--ink-2); }
.footer-grid nav a:hover { color: var(--ink); }
.footer-brand { font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.footer-h { font: 600 .72rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.footer-base { margin-top: 32px; font-size: .82rem; }

@media (max-width: 900px) {
  .two-col, .two-col-media { grid-template-columns: 1fr; gap: 36px; }
  .steps, .status-grid, .link-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section { padding-block: 64px; }
}
@media (max-width: 620px) {
  .nav a:not(.nav-gh):not([href="/status/"]) { display: none; }
  .steps, .status-grid, .link-grid, .footer-grid { grid-template-columns: 1fr; }
  .hero { padding-block: 48px 40px; }
  .wrap { padding-inline: 18px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }