:root {
  --ink: #172018;
  --ink-soft: #526056;
  --paper: #f2f0e9;
  --paper-deep: #e7e5dc;
  --night: #101210;
  --night-soft: #191d19;
  --line: rgba(23, 32, 24, .15);
  --line-light: rgba(242, 240, 233, .16);
  --accent: #f3a657;
  --accent-strong: #ee7d45;
  --blue: #8dc7bd;
  --mono: "SFMono-Regular", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --shell: min(1160px, calc(100% - 48px));
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

button, a { -webkit-tap-highlight-color: transparent; }

button { font: inherit; }

code, .eyebrow, .kicker, .terminal-body, .terminal-title, .terminal-state, .install-card, .diagram-node code, .mini-terminal, .footer-meta { font-family: var(--mono); }

.shell { width: var(--shell); margin-inline: auto; }

.sr-only, .skip-link:not(:focus) { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.skip-link:focus { position: fixed; z-index: 20; top: 12px; left: 12px; padding: 8px 12px; color: var(--night); background: var(--accent); }

:focus-visible { outline: 3px solid var(--accent-strong); outline-offset: 4px; }

.site-header { position: absolute; z-index: 10; top: 0; right: 0; left: 0; }

.nav { display: flex; align-items: center; justify-content: space-between; min-height: 76px; }

.brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 1.05rem; font-weight: 700; letter-spacing: -.03em; }

.brand-mark { display: grid; width: 29px; height: 29px; place-items: center; color: var(--night); background: var(--accent); font-size: .83rem; letter-spacing: -.12em; }

.nav-links { display: flex; align-items: center; gap: 26px; color: var(--ink-soft); font-size: .9rem; }

.nav-links a, .footer-links a { transition: color .2s ease; }
.nav-links a:hover, .footer-links a:hover, .text-link:hover { color: var(--accent-strong); }

.nav-toggle { display: none; color: var(--ink); background: transparent; border: 0; cursor: pointer; }

.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(420px, .9fr); align-items: center; gap: clamp(48px, 8vw, 112px); min-height: 790px; padding-top: 112px; padding-bottom: 92px; }

.eyebrow, .kicker { margin: 0 0 18px; color: var(--ink-soft); font-size: .73rem; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }

.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--accent-strong); }

.signal-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: currentColor; box-shadow: 0 0 0 4px color-mix(in srgb, currentColor 16%, transparent); }

h1, h2, h3, p { margin-top: 0; }

h1, h2, h3 { letter-spacing: -.055em; line-height: 1.02; }

h1 { max-width: 680px; margin-bottom: 26px; font-size: clamp(4.1rem, 8vw, 7.5rem); font-weight: 650; }
h1 em, h2 em { color: var(--accent-strong); font-style: normal; }

.hero-lede { max-width: 550px; margin-bottom: 30px; color: var(--ink-soft); font-size: clamp(1.15rem, 1.8vw, 1.35rem); line-height: 1.45; }

.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }

.button { display: inline-flex; align-items: center; justify-content: center; gap: 12px; min-height: 46px; padding: 0 18px; border: 1px solid transparent; font-family: var(--mono); font-size: .8rem; font-weight: 700; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--night); background: var(--accent); }
.button-primary:hover { background: #ffc071; }
.button-quiet { color: var(--ink); border-color: var(--line); }
.button-quiet:hover { border-color: var(--ink-soft); }

.hero-note { max-width: 480px; margin: 25px 0 0; color: var(--ink-soft); font-family: var(--mono); font-size: .72rem; }
.hero-model { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; max-width: 580px; margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); }
.model-item { display: grid; grid-template-columns: auto 1fr; gap: 9px; align-items: start; }
.model-item svg { width: 21px; height: 21px; flex: 0 0 auto; color: var(--accent-strong); fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.6; }
.model-item strong { display: block; color: var(--ink); font-family: var(--mono); font-size: .7rem; font-weight: 700; text-transform: uppercase; }
.model-item small { display: block; margin-top: 3px; color: var(--ink-soft); font-size: .72rem; line-height: 1.25; }

.terminal-window { overflow: hidden; color: #dce5d9; background: var(--night); box-shadow: 18px 20px 0 rgba(23, 32, 24, .08); }

.terminal-bar { display: flex; align-items: center; gap: 12px; min-height: 43px; padding: 0 16px; border-bottom: 1px solid rgba(242, 240, 233, .12); color: #929e93; font-family: var(--mono); font-size: .68rem; }
.terminal-lights { display: flex; gap: 5px; }
.terminal-lights i { width: 7px; height: 7px; border-radius: 50%; background: #59665a; }
.terminal-title { flex: 1; }
.terminal-state { display: inline-flex; align-items: center; gap: 7px; color: var(--blue); }
.terminal-body { min-height: 365px; padding: 25px 23px 30px; font-size: .78rem; line-height: 1.9; }
.prompt { color: var(--accent); }
.terminal-muted { color: #879386; }
.terminal-dim { color: #a4b19f; }
.terminal-ok { color: var(--blue); }
.terminal-recover { color: var(--accent); }
.cursor { display: inline-block; width: 7px; height: 15px; vertical-align: -3px; background: var(--accent); animation: blink 1.1s steps(2, jump-none) infinite; }

@keyframes blink { 50% { opacity: 0; } }

.rule { border-top: 1px solid var(--line); }

.section { padding-top: clamp(88px, 12vw, 156px); padding-bottom: clamp(88px, 12vw, 156px); }

.section-intro { max-width: 640px; }
.section-intro h2, .boundary-copy h2 { margin-bottom: 22px; font-size: clamp(2.6rem, 5vw, 5rem); font-weight: 650; }
.section-intro > p:last-child, .boundary-copy > p { max-width: 580px; color: var(--ink-soft); font-size: 1.05rem; }

.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; margin-top: 64px; background: var(--line); border: 1px solid var(--line); }
.feature-card { min-height: 270px; padding: 32px; background: var(--paper); }
.feature-card-wide { grid-row: span 2; min-height: 542px; }
.feature-card-accent { background: var(--paper-deep); }
.feature-number { display: block; margin-bottom: 62px; color: var(--accent-strong); font-family: var(--mono); font-size: .72rem; }
.feature-card h3 { margin-bottom: 13px; font-size: 1.65rem; font-weight: 650; }
.feature-card p { max-width: 440px; margin-bottom: 0; color: var(--ink-soft); }
.mini-terminal { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 70px; color: var(--ink); font-size: .7rem; }
.mini-terminal span { padding: 7px 9px; border: 1px solid var(--line); background: rgba(255,255,255,.3); }

.text-link { display: inline-flex; gap: 8px; margin-top: 24px; color: var(--accent-strong); font-family: var(--mono); font-size: .78rem; font-weight: 700; }

.section-dark, .install-section { color: var(--paper); background: var(--night); }
.section-intro-light .kicker { color: var(--blue); }
.section-intro-light > p:last-child { color: #aeb8ad; }

.how-grid, .install-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(50px, 10vw, 150px); align-items: start; }

.flow-list { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line-light); }
.flow-list li { display: grid; grid-template-columns: 45px 1fr; gap: 20px; padding: 27px 0; border-bottom: 1px solid var(--line-light); }
.flow-index { color: var(--accent); font-family: var(--mono); font-size: .76rem; }
.flow-list strong { display: block; margin-bottom: 8px; font-size: 1.2rem; letter-spacing: -.03em; }
.flow-list p { max-width: 490px; margin: 0; color: #aeb8ad; }
.flow-list code { color: var(--blue); }
.how-link { margin-top: 28px; }

.boundary-section { display: grid; grid-template-columns: minmax(0, .8fr) minmax(420px, 1.2fr); gap: clamp(50px, 9vw, 130px); align-items: center; }
.boundary-diagram { position: relative; display: grid; gap: 18px; padding: 28px; border: 1px solid var(--line); background: var(--paper-deep); }
.diagram-node { display: grid; gap: 8px; padding: 20px; border: 1px solid var(--line); background: var(--paper); }
.diagram-node-server { border-color: rgba(238, 125, 69, .5); }
.diagram-label { color: var(--ink-soft); font-family: var(--mono); font-size: .67rem; letter-spacing: .08em; text-transform: uppercase; }
.diagram-node code { font-size: .82rem; }
.diagram-line { display: flex; justify-content: space-between; padding: 0 20px; color: var(--accent-strong); font-family: var(--mono); font-size: .66rem; text-transform: uppercase; }
.diagram-pulse { display: flex; align-items: center; justify-content: space-between; padding: 12px 20px; color: var(--ink-soft); font-family: var(--mono); font-size: .67rem; border-top: 1px dashed var(--line); }
.diagram-pulse b { color: var(--accent-strong); font-size: 1.1rem; }

.install-section { padding-top: clamp(88px, 12vw, 140px); padding-bottom: clamp(88px, 12vw, 140px); }
.install-card { padding: 30px; color: var(--paper); background: var(--night-soft); border: 1px solid var(--line-light); }
.install-card-head { display: flex; justify-content: space-between; padding-bottom: 19px; border-bottom: 1px solid var(--line-light); color: var(--blue); font-size: .7rem; text-transform: uppercase; }
.install-label { margin: 27px 0 9px; color: #aeb8ad; font-size: .7rem; }
.command-row { display: flex; align-items: center; gap: 10px; padding: 12px 12px 12px 15px; border: 1px solid var(--line-light); background: #101310; }
.command-row code { overflow: auto; flex: 1; color: var(--paper); font-size: .77rem; white-space: nowrap; }
.copy-button { flex: 0 0 auto; padding: 6px 8px; color: var(--blue); background: transparent; border: 1px solid rgba(141, 199, 189, .4); cursor: pointer; font-family: var(--mono); font-size: .65rem; }
.copy-button:hover { color: var(--night); background: var(--blue); }
.button-full { width: 100%; margin-top: 28px; }
.install-footnote { margin: 18px 0 0; color: #89958b; font-family: var(--sans); font-size: .75rem; }
.install-footnote code { color: var(--blue); }
.support-note { display: grid; gap: 5px; margin-top: 34px; padding-left: 15px; border-left: 2px solid var(--accent); color: #aeb8ad; font-size: .8rem; }
.support-note strong { color: var(--paper); font-family: var(--mono); font-size: .72rem; text-transform: uppercase; }

.site-footer { padding: 33px 0; color: #aeb8ad; background: var(--night); }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr auto; gap: 30px; align-items: end; }
.site-footer .brand { color: var(--paper); }
.site-footer .brand-mark { color: var(--night); }
.site-footer p { margin: 12px 0 0; font-size: .78rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; font-family: var(--mono); font-size: .7rem; }
.footer-meta { margin: 0 !important; font-size: .68rem !important; text-align: right; }

.article-page { background: var(--paper); }
.article-page .site-header { position: relative; }
.article-hero { max-width: 900px; padding-top: 92px; padding-bottom: 76px; }
.article-hero h1 { max-width: 860px; margin-bottom: 28px; font-size: clamp(3.4rem, 7vw, 6.8rem); }
.article-dek { max-width: 680px; margin-bottom: 28px; color: var(--ink-soft); font-size: clamp(1.12rem, 2vw, 1.4rem); line-height: 1.45; }
.article-meta { display: flex; flex-wrap: wrap; gap: 18px; color: var(--ink-soft); font-family: var(--mono); font-size: .7rem; text-transform: uppercase; }
.article-meta span:first-child { color: var(--accent-strong); }
.article-content { max-width: 760px; padding-bottom: 130px; }
.article-content h2 { margin: 78px 0 20px; font-size: clamp(2rem, 4vw, 3.1rem); font-weight: 650; }
.article-content p, .article-content li { color: var(--ink-soft); font-size: 1.04rem; }
.article-content p { margin-bottom: 20px; }
.article-content ul, .article-content ol { margin: 0 0 24px; padding-left: 24px; }
.article-content li { margin: 10px 0; padding-left: 4px; }
.article-content strong { color: var(--ink); }
.article-lead { color: var(--ink) !important; font-size: 1.3rem !important; line-height: 1.5; }
.article-callout { margin: 48px 0 10px; padding: 25px; background: var(--paper-deep); border: 1px solid var(--line); }
.article-callout .kicker { margin-bottom: 20px; color: var(--accent-strong); }
.article-flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; gap: 10px; align-items: center; }
.article-flow div { display: grid; gap: 5px; min-width: 0; padding: 13px 10px; border: 1px solid var(--line); background: var(--paper); }
.article-flow span { color: var(--ink-soft); font-family: var(--mono); font-size: .62rem; text-transform: uppercase; }
.article-flow code { overflow: hidden; font-size: .7rem; text-overflow: ellipsis; white-space: nowrap; }
.article-flow b { color: var(--accent-strong); font-family: var(--mono); font-size: .9rem; }
.article-steps { counter-reset: steps; padding-left: 0 !important; list-style: none; }
.article-steps li { display: grid; grid-template-columns: 28px 1fr; gap: 12px; margin: 0; padding: 16px 0; border-bottom: 1px solid var(--line); }
.article-steps li::before { counter-increment: steps; content: counter(steps, decimal-leading-zero); color: var(--accent-strong); font-family: var(--mono); font-size: .72rem; }
.article-steps strong { display: block; margin-bottom: 4px; }
.article-code { overflow: auto; margin: 35px 0; padding: 23px; color: #dce5d9; background: var(--night); font-family: var(--mono); font-size: .76rem; line-height: 1.8; }
.article-code code { color: inherit; }
.architecture-figure { margin: 42px 0 54px; }
.architecture-svg { display: block; width: 100%; height: auto; border: 1px solid var(--line); background: var(--paper-deep); }
.architecture-svg text { dominant-baseline: alphabetic; }
.arch-frame { fill: transparent; stroke: var(--line); }
.arch-node { fill: var(--paper); stroke: var(--line); }
.arch-bootstrap { stroke: rgba(141, 199, 189, .7); }
.arch-transport { stroke: rgba(238, 125, 69, .65); }
.arch-server { fill: var(--night); }
.arch-server-node { fill: var(--night-soft); stroke: rgba(242, 240, 233, .2); }
.arch-kicker, .arch-edge-label { fill: var(--accent-strong); font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: 1.3px; }
.arch-kicker-dark { fill: var(--blue); }
.arch-title { fill: var(--ink); font-family: var(--sans); font-size: 19px; font-weight: 650; }
.arch-title-dark { fill: var(--paper); }
.arch-copy { fill: var(--ink-soft); font-family: var(--mono); font-size: 12px; }
.arch-copy-dark { fill: #aeb8ad; }
.arch-edge { fill: none; stroke: var(--accent-strong); stroke-width: 2; }
.arch-edge-recovery { stroke: var(--blue); stroke-dasharray: 7 7; }
.arch-arrowhead { fill: var(--accent-strong); }
.arch-edge-recovery + .arch-edge-label { fill: var(--blue); }
.arch-note { fill: var(--ink-soft); font-family: var(--mono); font-size: 11px; }
.architecture-caption { margin-top: 12px; color: var(--ink-soft); font-family: var(--mono); font-size: .7rem; }
.inline-link { color: var(--accent-strong); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.article-boundaries { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin: 28px 0; background: var(--line); border: 1px solid var(--line); }
.article-boundaries div { display: grid; gap: 8px; min-height: 130px; padding: 22px; background: var(--paper-deep); }
.article-boundaries span { color: var(--ink-soft); font-size: .9rem; }
.article-footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 18px; margin-top: 92px; padding-top: 22px; border-top: 1px solid var(--line); }

@media (max-width: 900px) {
  :root { --shell: min(100% - 36px, 680px); }
  .hero, .how-grid, .boundary-section, .install-grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; gap: 56px; padding-top: 140px; }
  .terminal-window { max-width: 650px; }
  .boundary-section { gap: 44px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-meta { text-align: left; }
}

@media (max-width: 640px) {
  :root { --shell: calc(100% - 32px); }
  .site-header { position: absolute; }
  .nav { min-height: 68px; }
  .nav-toggle { display: block; padding: 7px 0; font-family: var(--mono); font-size: .72rem; }
  .nav-links { position: absolute; top: 61px; right: 16px; left: 16px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 8px; color: var(--paper); background: var(--night); box-shadow: 8px 8px 0 rgba(23, 32, 24, .12); }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 11px 12px; }
  h1 { font-size: clamp(3.35rem, 17vw, 5.2rem); }
  .hero { padding-top: 118px; padding-bottom: 62px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .terminal-body { min-height: 330px; padding: 20px 15px 24px; font-size: .68rem; }
  .terminal-state { display: none; }
  .hero-model { grid-template-columns: 1fr 1fr; gap: 16px 12px; }
  .hero-model .model-item:last-child { grid-column: 1 / -1; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card-wide { grid-row: auto; min-height: 300px; }
  .feature-card { min-height: 240px; padding: 25px; }
  .feature-number { margin-bottom: 40px; }
  .mini-terminal { margin-top: 40px; }
  .boundary-diagram { padding: 15px; }
  .diagram-line, .diagram-pulse { padding-inline: 10px; font-size: .58rem; }
  .install-card { padding: 20px 15px; }
  .command-row code { font-size: .67rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 20px; }
  .article-hero { padding-top: 62px; padding-bottom: 52px; }
  .article-hero h1 { font-size: clamp(3rem, 15vw, 4.8rem); }
  .article-flow { grid-template-columns: 1fr; }
  .article-flow b { display: none; }
  .article-content h2 { margin-top: 58px; }
  .article-content p, .article-content li { font-size: .98rem; }
  .architecture-figure { margin-top: 30px; }
  .architecture-svg { min-width: 650px; }
  .architecture-figure { overflow-x: auto; }
  .article-boundaries { grid-template-columns: 1fr; }
  .article-footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}