@font-face { font-family: "Source Serif 4"; font-style: normal; font-weight: 200 900; font-display: swap; src: url("../fonts/source-serif-4-var.woff2") format("woff2"); }

:root {
  color-scheme: light;
  --bg: #f4f5f7;
  --bg-2: #eaedf1;
  --surface: #ffffff;
  --surface-2: #f8f9fb;
  --rule: #d8dce3;
  --rule-2: #bfc6d0;
  --ink: #12161d;
  --ink-2: #444b58;
  --ink-3: #5c6471;
  --signal: #b4450e;
  --signal-fill: #ff7a2f;
  --signal-tint: #fcebe0;
  --ok: #1b7a4c;
  --quiet: #8a5300;
  --shade: 0 1px 2px rgb(16 22 32 / .06);
  --serif: "Source Serif 4", "Iowan Old Style", Charter, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --gutter: clamp(16px, 4vw, 40px);
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0c0f14; --bg-2: #10141a; --surface: #151a21; --surface-2: #11151c;
  --rule: #252b35; --rule-2: #39414e;
  --ink: #e7eaef; --ink-2: #a9b0bc; --ink-3: #8b93a0;
  --signal: #ff8c4d; --signal-fill: #ff7a2f; --signal-tint: #2b1b11;
  --ok: #4cc38a; --quiet: #e3a54d;
  --shade: 0 0 0 1px rgb(255 255 255 / .02);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 76px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.6 var(--sans); -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { margin: 0; font-family: var(--serif); font-weight: 600; font-optical-sizing: auto; text-wrap: balance; }
p { margin: 0 0 1em; }
::selection { background: var(--signal-tint); }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 4px; }

.wrap { width: 100%; max-width: 1160px; margin-inline: auto; padding-inline: var(--gutter); }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--ink); color: var(--bg); padding: 8px 12px; border-radius: 4px; }
.skip:focus { left: 12px; }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

h1 { font-size: clamp(34px, 4.2vw, 54px); line-height: 1.1; letter-spacing: -0.012em; }
h2 { font-size: clamp(28px, 2.9vw, 38px); line-height: 1.15; letter-spacing: -0.008em; margin-bottom: 20px; }
h3 { font-size: 22px; line-height: 1.3; margin-bottom: 10px; }
.lede { font-size: clamp(18px, 1.5vw, 20px); line-height: 1.55; color: var(--ink-2); }
.muted { color: var(--ink-2); }
.note { font-size: 14px; color: var(--ink-3); }

.btn { display: inline-flex; align-items: center; padding: 11px 18px; border-radius: 6px; background: var(--ink); color: var(--bg); font: 600 15px/1.2 var(--sans); text-decoration: none; transition: background-color .15s; }
.btn:hover { background: var(--ink-2); }
.btn--sm { padding: 7px 13px; font-size: 14px; }
.link { color: var(--ink); font-weight: 500; text-decoration: underline; text-decoration-color: var(--rule-2); text-underline-offset: 4px; text-decoration-thickness: 1px; }
.link:hover { text-decoration-color: currentColor; }

.nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50; background: var(--bg); border-bottom: 1px solid var(--rule); }
.nav__in { display: flex; align-items: center; gap: 24px; height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 9px; text-decoration: none; color: var(--ink); }
.brand__mark { width: 28px; height: 28px; }
.brand__word { font: 700 19px/1 var(--sans); letter-spacing: .02em; }
.brand__word b { color: var(--signal-fill); font-weight: 700; }
.nav__links { display: flex; gap: 22px; margin-left: auto; }
.nav__links a { color: var(--ink-2); font-size: 15px; text-decoration: none; }
.nav__links a:hover { color: var(--ink); }
.nav__home { margin-left: auto; font-size: 15px; }
.theme-btn { display: inline-grid; place-items: center; width: 34px; height: 34px; padding: 0; border-radius: 6px; border: 1px solid var(--rule); background: transparent; color: var(--ink-2); cursor: pointer; }
.theme-btn:hover { color: var(--ink); border-color: var(--rule-2); }
.theme-btn svg { width: 16px; height: 16px; }
.theme-btn .i-sun { display: none; }
:root[data-theme="dark"] .theme-btn .i-sun { display: block; }
:root[data-theme="dark"] .theme-btn .i-moon { display: none; }
@media (max-width: 860px) { .nav__links { display: none; } .theme-btn { margin-left: auto; } }

.sec { padding-block: clamp(64px, 8vw, 104px); }
.sec + .sec { border-top: 1px solid var(--rule); }
.band { background: var(--bg-2); border-block: 1px solid var(--rule); }
.band + .sec, .sec + .band { border-top: 0; }
.g { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 40px; row-gap: 40px; align-items: start; }
.c-text { grid-column: 1 / span 6; }
.c-text > p { max-width: 62ch; }
.c-fig { grid-column: 8 / span 5; margin: 0; }
.c-head { grid-column: 1 / span 5; }
.c-rest { grid-column: 6 / span 7; }
.narrow { max-width: 760px; }
@media (max-width: 900px) {
  .g { grid-template-columns: minmax(0, 1fr); row-gap: 32px; }
  .c-text, .c-fig, .c-head, .c-rest { grid-column: 1; }
}

figure { margin: 0; }
figcaption { font-size: 13.5px; color: var(--ink-3); margin-top: 10px; }
.panel { background: var(--surface); border: 1px solid var(--rule); border-radius: 8px; }

.hero { padding-block: clamp(56px, 8vw, 104px) clamp(56px, 7vw, 88px); }
.hero .c-text { grid-column: 1 / span 7; }
.hero .c-fig { grid-column: 8 / span 5; margin-top: 8px; }
.hero h1 { margin-bottom: 24px; max-width: 20ch; }
.hero .lede { max-width: 54ch; margin-bottom: 30px; }
.hero__cta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 26px; margin: 0; }
@media (max-width: 900px) { .hero .c-text, .hero .c-fig { grid-column: 1; margin-top: 0; } }

.sit { padding: 22px 24px 18px; }
.sit__kind { font-size: 14px; font-weight: 500; color: var(--signal); margin: 0 0 8px; }
.sit__line { font: 600 23px/1.32 var(--serif); margin: 0 0 6px; }
.sit__meta { font-size: 14px; color: var(--ink-3); margin: 0 0 16px; }
.lines { list-style: none; margin: 0; padding: 14px 0 0; border-top: 1px solid var(--rule); font: 400 12.5px/1.85 var(--mono); color: var(--ink-2); }
.lines li { display: grid; grid-template-columns: 8ch 15ch 1fr; gap: 0 12px; }
.lines time { color: var(--ink-3); }
.lines .more { display: block; color: var(--ink-3); }
@media (max-width: 480px) { .lines li { grid-template-columns: 8ch 1fr; } .lines li > :nth-child(n+2) { grid-column: 2; } }

.night__cap { margin-top: 18px; }

.ledger { width: 100%; border-collapse: collapse; margin-top: clamp(32px, 4vw, 44px); font-size: 16px; }
.ledger caption { caption-side: top; text-align: left; font-size: 14px; color: var(--ink-3); padding-bottom: 10px; }
.ledger th, .ledger td { padding: 14px 0; border-top: 1px solid var(--rule); text-align: left; vertical-align: top; font-weight: 400; }
.ledger th { color: var(--ink-2); padding-right: 32px; }
.ledger td { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.ledger tr:first-child > * { border-top-color: var(--rule-2); }
.ledger .to td { color: var(--signal); font-weight: 600; }
.ledger .no td { color: var(--ink-3); }
.ledger .sum > * { border-top: 1px solid var(--rule-2); border-bottom: 1px solid var(--rule-2); color: var(--ink); font-weight: 600; }
.after { margin-top: clamp(48px, 6vw, 72px); }

.trail { list-style: none; margin: 4px 0 0; padding: 0; border-top: 1px solid var(--rule-2); }
.trail li { display: grid; grid-template-columns: 9ch 1fr; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--rule); font-size: 15.5px; }
.trail time { font: 400 12.5px/1.9 var(--mono); color: var(--ink-3); }
.trail s { color: var(--ink-3); text-decoration-color: var(--ink-3); }

.kind__name { font: 600 20px/1.35 var(--serif); margin: 4px 0 12px; }
.kind table { width: 100%; border-collapse: collapse; font-size: 15.5px; }
.kind th, .kind td { padding: 10px 0; border-top: 1px solid var(--rule); font-weight: 400; text-align: left; }
.kind tr:last-child > * { border-bottom: 1px solid var(--rule); }
.kind th { color: var(--ink-2); }
.kind td { text-align: right; font-variant-numeric: tabular-nums; }

.devices { padding: 6px 20px 14px; }
.devices table { width: 100%; border-collapse: collapse; font-size: 15px; }
.devices th, .devices td { padding: 10px 12px 10px 0; border-bottom: 1px solid var(--rule); text-align: left; font-weight: 400; }
.devices thead th { font-size: 13px; color: var(--ink-3); }
.devices tbody tr:last-child td { border-bottom: 0; }
.devices td:first-child, .devices td:last-child { font: 400 13.5px/1.5 var(--mono); }
.devices td:last-child, .devices thead th:last-child { color: var(--ink-3); text-align: right; padding-right: 0; }
.st { display: inline-flex; align-items: center; gap: 7px; font-size: 14.5px; white-space: nowrap; color: var(--ink-2); }
.st::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--rule-2); }
.st--ok::before { background: var(--ok); }
.st--quiet { color: var(--quiet); font-weight: 500; }
.st--quiet::before { background: var(--quiet); }

.raven__h3 { margin-top: 36px; }
.tr { overflow: hidden; }
.tr__bar { display: flex; gap: 10px; align-items: baseline; padding: 12px 18px; border-bottom: 1px solid var(--rule); font-size: 13.5px; color: var(--ink-3); }
.tr__bar b { color: var(--ink); font-weight: 600; }
.tr__q { padding: 16px 18px 0; margin: 0; }
.chip { display: inline-block; font-size: 13px; padding: 5px 10px; border-radius: 6px; border: 1px solid var(--ink); color: var(--ink); font-weight: 500; }
.tr__a { padding: 14px 18px 4px; font-size: 15.5px; }
.tr__a sup { font: 500 11px/1 var(--mono); color: var(--ink-3); margin-left: 1px; }
.tr__next { font-size: 14.5px; color: var(--ink-2); padding-top: 10px; border-top: 1px dashed var(--rule-2); }
.tr__cites { list-style: none; margin: 0; padding: 12px 18px 16px; background: var(--surface-2); border-top: 1px solid var(--rule); font: 400 12px/1.8 var(--mono); color: var(--ink-2); }
.tr__cites span { color: var(--ink-3); margin-right: 8px; }

.netfig svg { width: 100%; height: auto; }
.nf-zone { fill: var(--surface); stroke: var(--rule-2); stroke-width: 1.2; }
.nf-dev { fill: var(--surface-2); stroke: var(--rule-2); }
.nf-app { fill: var(--signal-tint); stroke: var(--signal); stroke-width: 1.4; }
.nf-wire { fill: none; stroke: var(--ink-3); stroke-width: 1.2; }
.nf-out { fill: none; stroke: var(--rule-2); stroke-width: 1.2; stroke-dasharray: 4 5; }
.nf-x { stroke: var(--ink-2); stroke-width: 1.8; stroke-linecap: round; }
.nf-t { fill: var(--ink-2); font: 400 12px var(--mono); }
.nf-label { fill: var(--ink-3); font: 500 13px var(--sans); }
.nf-app-t { fill: var(--ink); font: 700 17px var(--sans); }
.nf-app-s { fill: var(--ink-2); font: 400 12px var(--sans); }
.spec { margin: 26px 0 0; }
.spec div { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 4px 24px; padding: 11px 0; border-top: 1px solid var(--rule); font-size: 15.5px; }
.spec div:last-child { border-bottom: 1px solid var(--rule); }
.spec dt { color: var(--ink-3); }
.spec dd { margin: 0; }
@media (max-width: 520px) { .spec div { grid-template-columns: minmax(0, 1fr); } }

.end h2 { font-size: clamp(28px, 3.2vw, 40px); }
.end p { max-width: 56ch; }
.end__cta { margin-top: 24px; }

.foot { border-top: 1px solid var(--rule); padding-block: 48px calc(28px + env(safe-area-inset-bottom, 0px)); font-size: 14.5px; color: var(--ink-2); }
.foot__grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.foot__h { font: 500 13px/1.4 var(--sans); color: var(--ink-3); margin: 0 0 10px; }
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.foot a { text-decoration: none; color: var(--ink-2); }
.foot a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.foot__about p { margin: 12px 0 0; }
.foot__base { margin-top: 40px; padding-top: 18px; border-top: 1px solid var(--rule); color: var(--ink-3); font-size: 13.5px; }
@media (max-width: 720px) { .foot__grid { grid-template-columns: 1fr 1fr; } .foot__about { grid-column: 1 / -1; } }

.prose { max-width: 720px; }
.prose h1 { font-size: clamp(30px, 3.6vw, 42px); margin-bottom: 20px; }
.prose h2 { font-size: 22px; margin: 34px 0 8px; }
.prose p { color: var(--ink-2); }
.prose a { color: var(--ink); text-underline-offset: 3px; }
.prose .btn { color: var(--bg); }

@media print {
  .nav, .theme-btn, .cs-play { display: none !important; }
  body { background: #fff; color: #000; }
}