@font-face {
  font-family: 'Geist';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url(/fonts/geist-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Geist';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url(/fonts/geist-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Geist Mono';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url(/fonts/geist-mono-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Geist Mono';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url(/fonts/geist-mono-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --paper-white: #ffffff;
  --concrete-100: #f2f2f0;
  --concrete-200: #e3e3e0;
  --graphite-500: #5c5c5c;
  --ink-900: #141414;
  --night-400: #a3a3a0;
  --night-700: #2c2c2a;
  --night-800: #1e1e1d;
  --chrome-400: #ffd400;
  --rust-50: #fbf0e4;
  --rust-700: #8f4a0e;

  --color-bg: var(--paper-white);
  --color-desk: var(--concrete-100);
  --color-line: var(--concrete-200);
  --color-ink: var(--ink-900);
  --color-muted: var(--graphite-500);
  --color-slip: var(--paper-white);
  --color-stamp-slip: var(--ink-900);
  --color-on-stamp: var(--paper-white);
  --color-action: var(--chrome-400);
  --color-on-action: var(--ink-900);
  --color-warning: var(--rust-700);
  --color-warning-soft: var(--rust-50);
  --color-code: var(--ink-900);
  --color-on-code: var(--paper-white);
  --color-user-slip: #fff4c2;
  --color-fail: #ff6b7d;
  --color-danger: #c8102e;
  --color-danger-soft: #fbe8eb;
  --shadow-showcase: 0 0 0 1px var(--color-line), 0 40px 96px rgb(20 20 20 / 0.12), 0 6px 18px rgb(20 20 20 / 0.07);

  --font-sans: 'Geist', ui-sans-serif, system-ui, sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --spacing-1: 4px;
  --spacing-2: 8px;
  --spacing-3: 12px;
  --spacing-4: 16px;
  --spacing-5: 20px;
  --spacing-6: 24px;
  --spacing-8: 32px;
  --spacing-10: 40px;
  --spacing-12: 48px;
  --spacing-16: 64px;
  --spacing-24: 96px;
  --spacing-32: 128px;
  --gutter: max(var(--spacing-24), calc((100vw - 1248px) / 2));
  --radius: 10px;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --color-bg: #0e0e0e;
  --color-desk: #161616;
  --color-line: var(--night-700);
  --color-ink: var(--concrete-100);
  --color-muted: var(--night-400);
  --color-slip: var(--night-800);
  --color-stamp-slip: var(--concrete-100);
  --color-on-stamp: var(--ink-900);
  --color-warning: #f0b37a;
  --color-warning-soft: #33200e;
  --color-code: var(--night-800);
  --color-on-code: var(--concrete-100);
  --shadow-showcase: 0 0 0 1px var(--night-700), 0 40px 96px rgb(0 0 0 / 0.5), 0 6px 18px rgb(0 0 0 / 0.35);
  --color-user-slip: #3a3312;
  --color-danger: #ff6b7d;
  --color-danger-soft: #3a0e15;
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg: #0e0e0e;
    --color-desk: #161616;
    --color-line: var(--night-700);
    --color-ink: var(--concrete-100);
    --color-muted: var(--night-400);
    --color-slip: var(--night-800);
    --color-stamp-slip: var(--concrete-100);
    --color-on-stamp: var(--ink-900);
    --color-warning: #f0b37a;
    --color-warning-soft: #33200e;
    --color-code: var(--night-800);
    --color-on-code: var(--concrete-100);
    --shadow-showcase: 0 0 0 1px var(--night-700), 0 40px 96px rgb(0 0 0 / 0.5), 0 6px 18px rgb(0 0 0 / 0.35);
    --color-user-slip: #3a3312;
  --color-danger: #ff6b7d;
  --color-danger-soft: #3a0e15;
    color-scheme: dark;
  }
}

.showcase .dark { display: none; }
:root[data-theme="dark"] .showcase .light { display: none; }
:root[data-theme="dark"] .showcase .dark { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .showcase .light { display: none; }
  :root:not([data-theme="light"]) .showcase .dark { display: block; }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, pre, ul, figure { margin: 0; }

a { color: inherit; }

code, pre, kbd { font-family: var(--font-mono); }

:focus-visible { outline: 2px solid var(--color-ink); outline-offset: 3px; border-radius: 4px; }

.skip {
  position: absolute;
  left: var(--spacing-4);
  top: calc(-1 * var(--spacing-12));
  padding: var(--spacing-2) var(--spacing-3);
  background: var(--color-stamp-slip);
  color: var(--color-on-stamp);
  border-radius: 6px;
  z-index: 10;
}
.skip:focus { top: var(--spacing-3); }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-6);
  padding: var(--spacing-5) var(--gutter);
  border-bottom: 1px solid var(--color-line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav { display: flex; align-items: center; gap: var(--spacing-6); }
.nav a { font-weight: 500; text-decoration: none; }
.nav a:hover { text-decoration: underline; text-underline-offset: 4px; }
.nav a[aria-current="page"] { text-decoration: underline; text-underline-offset: 4px; }
.with-icon, .button { gap: var(--spacing-2); }
.nav .with-icon { display: inline-flex; align-items: center; }
.icon { flex-shrink: 0; }
.stars {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: 0 var(--spacing-2);
  border-radius: 999px;
  box-shadow: inset 0 0 0 1px var(--color-line);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  line-height: 20px;
}
.stars::before {
  content: '';
  width: 11px;
  height: 11px;
  background: currentColor;
  clip-path: polygon(50% 0%, 61.8% 35.3%, 100% 38.2%, 69.1% 61.8%, 80.9% 100%, 50% 76.4%, 19.1% 100%, 30.9% 61.8%, 0% 38.2%, 38.2% 35.3%);
}
.stars[hidden] { display: none; }
@media (prefers-reduced-motion: no-preference) {
  .stars:not([hidden]) { animation: confirm 320ms var(--ease-out); }
}

.menu { position: relative; }
.menu-button {
  appearance: none;
  border: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  height: 32px;
  padding: 0 var(--spacing-3);
  border-radius: var(--radius);
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--color-line);
  color: var(--color-ink);
  font: 600 12px var(--font-mono);
  cursor: pointer;
}
.menu-button.square { width: 32px; padding: 0; }
.menu-button::after { content: ''; position: absolute; inset: -6px -4px; }
.menu-button:hover, .menu-button[aria-expanded="true"] { background: var(--color-desk); }
.menu-list {
  position: absolute;
  top: calc(100% + var(--spacing-2));
  right: 0;
  z-index: 20;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
  min-width: 168px;
  margin: 0;
  padding: var(--spacing-1);
  list-style: none;
  border-radius: var(--radius);
  background: var(--color-slip);
  box-shadow: 0 0 0 1px var(--color-line), 0 12px 32px rgb(20 20 20 / 0.12);
}
.menu-list[hidden] { display: none; }
.menu-list [role="menuitemradio"] {
  appearance: none;
  border: 0;
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  width: 100%;
  min-height: 36px;
  padding: 0 var(--spacing-3);
  border-radius: 6px;
  background: transparent;
  color: var(--color-ink);
  font: 400 14px var(--font-sans);
  text-align: left;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}
.menu-list [role="menuitemradio"] span { flex: 1; }
.menu-list [role="menuitemradio"] svg:not(.check) { color: var(--color-muted); }
.menu-list [role="menuitemradio"]:hover, .menu-list [role="menuitemradio"]:focus-visible { background: var(--color-desk); outline: none; }
.menu-list [aria-checked="true"] { background: var(--color-desk); font-weight: 600; }
.menu-list [aria-checked="true"] svg:not(.check) { color: var(--color-ink); }
.menu-list .check { visibility: hidden; flex-shrink: 0; }
.menu-list [aria-checked="true"] .check { visibility: visible; }
:root[data-theme="dark"] .menu-list { box-shadow: 0 0 0 1px var(--color-line), 0 12px 32px rgb(0 0 0 / 0.5); }

.showcase .showcase-phone { display: none; }

.eyebrow { font-family: var(--font-mono); font-size: 14px; color: var(--color-muted); letter-spacing: 0.02em; }

.hero { display: flex; flex-direction: column; gap: var(--spacing-6); padding: var(--spacing-24) var(--gutter) var(--spacing-16); }
.hero h1 { font-size: 52px; line-height: 1.08; font-weight: 800; letter-spacing: -0.03em; max-width: 880px; text-wrap: balance; }
.lead { font-size: 18px; line-height: 1.55; color: var(--color-muted); max-width: 600px; text-wrap: pretty; }
.hero .note { font-size: 14px; color: var(--color-muted); }

.actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--spacing-4); padding-top: var(--spacing-2); }

.command {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-3);
  min-height: 52px;
  padding: 0 var(--spacing-2) 0 var(--spacing-5);
  border-radius: var(--radius);
  background: var(--color-code);
  color: var(--color-on-code);
  font-family: var(--font-mono);
  font-size: 15px;
  max-width: 100%;
}
.command code { overflow-x: auto; white-space: nowrap; }
.command .prompt { color: var(--color-action); }

.copy {
  appearance: none;
  border: 0;
  flex-shrink: 0;
  min-width: 76px;
  margin-left: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-3);
  border-radius: 6px;
  background: transparent;
  color: var(--night-400);
  font: 500 13px var(--font-sans);
  text-align: center;
  cursor: pointer;
}
.copy:hover { color: var(--paper-white); background: var(--night-700); }
.copy[data-state="copied"] { color: var(--color-action); }

.button {
  display: inline-flex;
  align-items: center;
  min-height: 52px;
  padding: 0 var(--spacing-6);
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
}
.button.primary { background: var(--color-action); color: var(--color-on-action); }
.button.primary:hover { background: #f0c800; }
.button.secondary { box-shadow: inset 0 0 0 1px var(--color-line); }
.button.secondary:hover { background: var(--color-desk); }

.showcase {
  padding: 0 var(--gutter);
  background: linear-gradient(180deg, var(--color-bg) 0 50%, var(--color-desk) 50% 100%);
}
.showcase .frame {
  max-width: 1248px;
  margin: 0 auto;
  aspect-ratio: 1248 / 528;
  overflow: hidden;
  border-radius: 16px;
  box-shadow: var(--shadow-showcase);
}
.showcase img { display: block; width: 100%; height: auto; }

.section { display: flex; flex-direction: column; gap: var(--spacing-10); padding: var(--spacing-24) var(--gutter); }
.section.desk { background: var(--color-desk); }
.section.split { flex-direction: row; gap: var(--spacing-16); }
.split .intro { width: 360px; flex-shrink: 0; }

.intro { display: flex; flex-direction: column; gap: var(--spacing-3); max-width: 760px; }
.intro h2 { font-size: 32px; line-height: 1.25; font-weight: 800; letter-spacing: -0.025em; text-wrap: balance; }
.intro p { font-size: 15px; line-height: 1.6; color: var(--color-muted); text-wrap: pretty; }

.pair { display: flex; gap: var(--spacing-6); align-items: stretch; }

.inbox-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--spacing-3);
  width: 440px;
  flex-shrink: 0;
  padding: var(--spacing-8);
  border-radius: 12px;
  background: var(--color-desk);
}
.slip { border-radius: 4px 12px 12px 12px; background: var(--color-slip); box-shadow: 0 1px 2px rgb(20 20 20 / 0.06), 0 0 0 1px var(--color-line); overflow: hidden; }
.slip-body { display: flex; flex-direction: column; gap: var(--spacing-2); padding: var(--spacing-3) var(--spacing-4) var(--spacing-2); }
.slip-title { font-size: 14px; font-weight: 700; }
.slip-meta { align-self: flex-end; font-size: 12px; color: var(--color-muted); }
.slip-button { display: flex; align-items: center; justify-content: center; gap: var(--spacing-2); min-height: 44px; border-top: 1px solid var(--color-line); font-size: 14px; font-weight: 600; }
.tap { align-self: flex-end; display: flex; align-items: baseline; gap: var(--spacing-3); padding: var(--spacing-2) var(--spacing-3); border-radius: 12px 4px 12px 12px; background: var(--color-user-slip); font-size: 15px; }
.tap span { font-size: 12px; color: var(--color-muted); }
.delivery { align-self: flex-end; font-size: 12px; color: var(--color-muted); }

.code-panel {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  border-radius: 12px;
  background: var(--night-800);
  box-shadow: 0 0 0 1px var(--night-700);
  color: var(--concrete-100);
}
.code-panel figcaption, .code-head { display: flex; justify-content: space-between; gap: var(--spacing-4); padding: var(--spacing-3) var(--spacing-5); border-bottom: 1px solid var(--night-700); font-family: var(--font-mono); font-size: 13px; color: var(--night-400); }
.code-panel .ok { color: var(--chrome-400); }
.code-panel .fail { color: var(--color-fail); }
.code-panel pre { padding: var(--spacing-5); overflow-x: auto; font-size: 13px; line-height: 1.6; }
.code-panel .out { color: var(--night-400); }
.code-panel mark { background: none; color: var(--chrome-400); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

.section-intro { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--spacing-8); }
.more { flex-shrink: 0; font-size: 14px; font-weight: 600; text-underline-offset: 4px; }

.story { display: flex; gap: var(--spacing-6); align-items: stretch; }
.story > .step { width: 600px; flex-shrink: 0; }
.steps { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: var(--spacing-6); }
.step { display: flex; flex-direction: column; gap: var(--spacing-3); min-width: 0; }
.step:last-child { flex: 1; }
.step figcaption { font-size: 14px; font-weight: 600; }
.step .code-panel { flex: 1; }

.thread { display: flex; flex-direction: column; gap: var(--spacing-2); padding: var(--spacing-5); border-radius: 12px; background: var(--color-slip); box-shadow: 0 0 0 1px var(--color-line); }
.thread-head { display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-3); padding-bottom: var(--spacing-3); border-bottom: 1px solid var(--color-line); font-size: 12px; color: var(--color-muted); }
.thread-head p { display: flex; flex-direction: column; }
.thread-head strong { font-size: 14px; color: var(--color-ink); }
.thread .origin { padding-top: var(--spacing-2); font-size: 12px; color: var(--color-muted); }
.thread .origin strong { color: var(--color-ink); font-weight: 600; }
.rejected { display: flex; flex-direction: column; gap: var(--spacing-2); padding: var(--spacing-3) var(--spacing-4); border-radius: 4px 12px 12px 12px; background: var(--color-danger-soft); box-shadow: inset 0 0 0 1px var(--color-danger); font-size: 15px; line-height: 1.5; }
.rejected-title { display: flex; justify-content: space-between; align-items: baseline; gap: var(--spacing-3); color: var(--color-danger); font-size: 14px; }
.rejected-title span { font-size: 12px; }
.rejected-details { font-family: var(--font-mono); font-size: 12px; line-height: 1.4; color: var(--color-muted); overflow-wrap: anywhere; }


.terminal {
  flex: 1;
  min-width: 0;
  align-self: flex-start;
  border-radius: 12px;
  background: var(--night-800);
  box-shadow: 0 0 0 1px var(--night-700);
}
.terminal .bar { padding: var(--spacing-3) var(--spacing-5); border-bottom: 1px solid var(--night-700); font-family: var(--font-mono); font-size: 13px; color: var(--night-400); }
.terminal pre { padding: var(--spacing-6); overflow-x: auto; font-size: 13px; line-height: 1.7; color: var(--concrete-100); }
.terminal .prompt { color: var(--chrome-400); }
.terminal .out { color: var(--night-400); }

.footer { display: flex; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; gap: var(--spacing-6); padding: var(--spacing-12) var(--gutter) var(--spacing-16); border-top: 1px solid var(--color-line); }
.footer .brand { font-size: 18px; }
.footer p { color: var(--color-muted); font-size: 14px; }
.footer .mono { font-family: var(--font-mono); font-size: 13px; color: var(--color-ink); }
.footer .about { display: flex; flex-direction: column; gap: var(--spacing-2); }
.author { display: flex; align-items: center; gap: var(--spacing-3); text-decoration: none; }
.author img { width: 36px; height: 36px; border-radius: 50%; }
.author strong { display: block; font-size: 14px; }
.author span span { display: block; font-family: var(--font-mono); font-size: 13px; color: var(--color-muted); }

.docs { display: flex; gap: var(--spacing-24); padding: var(--spacing-16) var(--gutter) var(--spacing-24); }
.toc { position: sticky; top: var(--spacing-6); align-self: flex-start; display: flex; flex-direction: column; gap: var(--spacing-1); width: 232px; flex-shrink: 0; }
.toc .eyebrow { padding-bottom: var(--spacing-3); font-size: 13px; }
.toc a { padding: var(--spacing-2) var(--spacing-3); border-left: 2px solid transparent; border-radius: 0 6px 6px 0; color: var(--color-muted); text-decoration: none; font-size: 14px; }
.toc a:hover { color: var(--color-ink); background: var(--color-desk); }
.toc a.active { border-left-color: var(--color-ink); background: var(--color-desk); color: var(--color-ink); font-weight: 600; }
.toc .llms { display: flex; flex-direction: column; gap: var(--spacing-1); margin-top: var(--spacing-5); padding: var(--spacing-4); border-radius: var(--radius); box-shadow: inset 0 0 0 1px var(--color-line); text-decoration: none; }
.toc .llms code { font-size: 14px; font-weight: 600; }
.toc .llms span { font-size: 13px; line-height: 1.45; color: var(--color-muted); }

.content { display: flex; flex-direction: column; gap: var(--spacing-5); width: 760px; min-width: 0; }
.content h1 { font-size: 32px; line-height: 1.25; font-weight: 800; letter-spacing: -0.03em; }
.content > .lead { font-size: 16px; padding-bottom: var(--spacing-6); }
.content h2 { font-size: 22px; line-height: 1.33; font-weight: 700; letter-spacing: -0.02em; }
.content h3 { padding-top: var(--spacing-2); font-size: 17px; font-weight: 700; }
.content p, .content li { line-height: 1.7; }
.content ul { padding-left: var(--spacing-5); display: flex; flex-direction: column; gap: var(--spacing-2); }
.content :not(pre) > code { font-size: 14px; padding: 0 var(--spacing-1); border-radius: 4px; background: var(--color-desk); overflow-wrap: anywhere; }

.code { position: relative; border-radius: var(--radius); background: var(--color-code); color: var(--color-on-code); }
.code pre { padding: var(--spacing-4) var(--spacing-24) var(--spacing-4) var(--spacing-5); overflow-x: auto; font-size: 14px; line-height: 1.6; }
.code .prompt { color: var(--color-action); }
.code .copy { position: absolute; top: var(--spacing-2); right: var(--spacing-2); }

.table { border-radius: var(--radius); box-shadow: inset 0 0 0 1px var(--color-line); overflow-x: auto; }
.table table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th { padding: var(--spacing-3) var(--spacing-5); background: var(--color-desk); color: var(--color-muted); font-size: 13px; font-weight: 600; text-align: left; }
.table td { padding: var(--spacing-3) var(--spacing-5); border-top: 1px solid var(--color-line); vertical-align: top; }
.table td:first-child { white-space: nowrap; }

.page-tools { display: flex; flex-wrap: wrap; gap: var(--spacing-2); }

.toc-mobile { display: none; border-radius: var(--radius); box-shadow: inset 0 0 0 1px var(--color-line); }
.toc-mobile summary { display: flex; align-items: center; gap: var(--spacing-2); min-height: 44px; padding: 0 var(--spacing-4); list-style: none; cursor: pointer; font-size: 14px; font-weight: 600; }
.toc-mobile summary::-webkit-details-marker { display: none; }
.toc-mobile summary span:first-child { flex: 1; }
.toc-mobile .current { font-weight: 400; color: var(--color-muted); }
.toc-mobile summary svg { color: var(--color-muted); }
.toc-mobile[open] summary svg { transform: rotate(180deg); }
.toc-mobile nav { display: flex; flex-direction: column; padding: 0 var(--spacing-2) var(--spacing-2); border-top: 1px solid var(--color-line); }
.toc-mobile nav a { display: flex; align-items: center; min-height: 40px; padding: 0 var(--spacing-2); border-radius: 6px; color: var(--color-ink); text-decoration: none; font-size: 14px; }
.toc-mobile nav a:hover { background: var(--color-desk); }

.md-button {
  appearance: none;
  border: 0;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  min-height: 32px;
  padding: 0 var(--spacing-3);
  border-radius: 8px;
  background: var(--color-bg);
  box-shadow: inset 0 0 0 1px var(--color-line);
  color: var(--color-ink);
  font: 500 13px var(--font-sans);
  text-decoration: none;
  cursor: pointer;
}
.md-button:hover { background: var(--color-desk); }
.md-button svg { flex-shrink: 0; color: var(--color-muted); }
.md-button[data-state="copied"] svg { color: var(--color-ink); }

.section-head { display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-4); padding-top: var(--spacing-10); scroll-margin-top: var(--spacing-6); }
.section-head h2 { padding-top: 0; }
.section-head.first { padding-top: var(--spacing-4); border-top: 1px solid var(--color-line); }
.section-head .md-button { opacity: 0.55; transition: opacity 120ms ease-out; }
.section-head:hover .md-button, .section-head .md-button:focus-visible, .section-head .md-button[data-state="copied"] { opacity: 1; }

@media (hover: none), (max-width: 720px) { .section-head .md-button { opacity: 1; } }

.callout { display: flex; flex-direction: column; gap: var(--spacing-2); padding: var(--spacing-4) var(--spacing-5); border-radius: var(--radius); background: var(--color-warning-soft); }
.callout strong { color: var(--color-warning); font-size: 14px; }

@media (max-width: 1100px) {
  :root { --gutter: var(--spacing-12); }
  .section.split, .pair, .story, .section-intro { flex-direction: column; }
  .section-intro { align-items: flex-start; }
  .split .intro, .inbox-panel, .story > .step { width: auto; }
  .terminal, .code-panel { align-self: stretch; }
  .toc { display: none; }
  .toc-mobile { display: block; }
  .content { width: auto; max-width: 760px; }
}

@media (max-width: 720px) {
  :root { --gutter: var(--spacing-4); }
  .topbar { padding-block: var(--spacing-3); gap: var(--spacing-3); }
  .brand { font-size: 18px; }
  .nav { gap: var(--spacing-3); }
  .github-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  .nav .stars { display: none; }
  .showcase .frame { display: none; }
  .showcase .showcase-phone { display: flex; }
  .hero { padding-top: var(--spacing-12); padding-bottom: var(--spacing-10); gap: var(--spacing-5); }
  .hero h1 { font-size: 38px; }
  .lead { font-size: 16px; }
  .command { width: 100%; font-size: 13px; }
  .code pre { padding-right: var(--spacing-4); -webkit-mask-image: linear-gradient(90deg, #000 calc(100% - 112px), transparent calc(100% - 72px)); mask-image: linear-gradient(90deg, #000 calc(100% - 112px), transparent calc(100% - 72px)); }
  .command code { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, #000 calc(100% - 48px), transparent); mask-image: linear-gradient(90deg, #000 calc(100% - 48px), transparent); }
  .button { flex: 1; justify-content: center; white-space: nowrap; padding: 0 var(--spacing-4); }
  .terminal pre, .code-panel pre { font-size: 12px; }
  .section { padding-block: var(--spacing-16); }
  .intro h2, .content h1 { font-size: 28px; }
  .inbox-panel { padding: var(--spacing-5); }
  .showcase .frame { border-radius: 10px; }
  .docs { padding-top: var(--spacing-10); }
}

.md-button { min-width: 0; }
.section-head .md-button { min-width: 84px; justify-content: center; }

:root {
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }

  .button, .md-button, .copy, .menu-button, .menu-list [role="menuitemradio"], .toc a, .nav a {
    transition-property: background-color, color, box-shadow, transform, opacity;
    transition-duration: 160ms;
    transition-timing-function: var(--ease-out);
  }
  .button:active, .md-button:active, .copy:active { transform: scale(0.97); }

  .copy[data-state="copied"] .label,
  .md-button[data-state="copied"] .label { animation: confirm 260ms var(--ease-out); }

  .hero > * { animation: rise 640ms var(--ease-out) both; }
  .hero > :nth-child(2) { animation-delay: 60ms; }
  .hero > :nth-child(3) { animation-delay: 120ms; }
  .hero > :nth-child(4) { animation-delay: 180ms; }
  .hero > :nth-child(5) { animation-delay: 240ms; }
  .showcase .frame { animation: lift 900ms var(--ease-out) 260ms both; }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

@keyframes lift {
  from { opacity: 0; transform: translateY(40px) scale(0.985); }
  to { opacity: 1; transform: none; }
}

@keyframes confirm {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}

.showcase-phone .you { align-self: flex-end; display: flex; flex-direction: column; gap: var(--spacing-1); max-width: 85%; padding: var(--spacing-2) var(--spacing-3); border-radius: 12px 4px 12px 12px; background: var(--color-user-slip); font-size: 15px; }
.showcase-phone .origin { font-size: 12px; color: var(--color-muted); }
.showcase-phone .origin strong { color: var(--color-ink); font-weight: 600; }
.showcase-phone .slip { max-width: 92%; }
.slip-footer { font-size: 13px; color: var(--color-muted); }