/* The public site (DESIGN.md §89.1): warm paper, near-black type, small precise text, one accent for actions. */

:root {
  color-scheme: light dark;
  --paper: #f4f2ee;
  --ink: #111111;
  --dim: #66645f;
  --line: rgba(17, 17, 17, 0.16);
  --line-strong: rgba(17, 17, 17, 0.42);
  --raised: rgba(17, 17, 17, 0.05);
  --accent: #b22d19;
  --on-accent: #f4f2ee;
  --warn-bg: rgba(178, 45, 25, 0.08);
  --error: #b22d19;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --u: 0.5rem;
  --page: 1.25rem;
  --gutter: 1.5rem;
  --max: 96rem;
}
@media (min-width: 46rem) {
  :root { --page: 2.5rem; }
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #151412;
    --ink: #ece8e1;
    --dim: #a39f97;
    --line: rgba(236, 232, 225, 0.16);
    --line-strong: rgba(236, 232, 225, 0.4);
    --raised: rgba(236, 232, 225, 0.07);
    --accent: #ff8f74;
    --on-accent: #151412;
    --warn-bg: rgba(255, 143, 116, 0.1);
    --error: #ff8f74;
  }
}
@media (prefers-contrast: more) {
  :root { --dim: #3f3d3a; --line: rgba(17, 17, 17, 0.4); --line-strong: rgba(17, 17, 17, 0.7); --accent: #8e2010; }
}
@media (prefers-contrast: more) and (prefers-color-scheme: dark) {
  :root { --dim: #d6d2cb; --line: rgba(236, 232, 225, 0.4); --line-strong: rgba(236, 232, 225, 0.7); --accent: #ffb3a0; }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; -webkit-font-smoothing: antialiased; }
body {
  margin: 0;
  font: 0.9375rem/1.5 var(--font);
  color: var(--ink);
  background: var(--paper);
  overflow-wrap: break-word;
  font-feature-settings: "kern", "cv05";
}
::selection { background: var(--accent); color: var(--on-accent); }
a { color: inherit; text-decoration: underline; text-decoration-color: var(--line-strong); text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { text-decoration-color: currentColor; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }
img { max-width: 100%; height: auto; display: block; }
code { font: 0.9em var(--mono); background: var(--raised); padding: 0.1em 0.3em; border-radius: 2px; }
h1, h2, h3, h4 { font-weight: 500; line-height: 1.25; letter-spacing: -0.01em; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(1.5rem, 1.25rem + 1vw, 2rem); letter-spacing: -0.02em; margin-bottom: 1rem; }
h2 { font-size: clamp(1.25rem, 1.1rem + 0.6vw, 1.625rem); letter-spacing: -0.015em; }
h3 { font-size: 1rem; }
p, ul, ol, dl { margin: 0 0 1rem; }
li { margin: 0.25rem 0; }
li::marker { color: var(--dim); }
strong, b { font-weight: 500; }
[hidden] { display: none !important; }
[tabindex="-1"]:focus { outline: none; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* MARK: Small text */

.small { font-size: 0.8125rem; line-height: 1.5; color: var(--dim); letter-spacing: 0.01em; }
.label { font-size: 0.75rem; line-height: 1.5; letter-spacing: 0.02em; color: var(--dim); text-transform: uppercase; }
.meta { margin: 0; }
.meta p { margin: 0; font-size: 0.75rem; line-height: 1.5; letter-spacing: 0.02em; color: var(--dim); text-transform: uppercase; }
.meta p + p { margin-top: 1rem; }
.meta b { display: block; font-size: 0.8125rem; font-weight: 500; color: var(--ink); letter-spacing: 0; text-transform: none; }
.num { font-size: 0.75rem; font-weight: 500; letter-spacing: 0.02em; color: var(--accent); font-variant-numeric: tabular-nums; }

/* MARK: Chrome */

.skip { position: absolute; left: var(--page); top: -4rem; background: var(--paper); padding: 0.5rem 0.75rem; z-index: 1; font-size: 0.8125rem; }
.skip:focus { top: 0.5rem; }

.top, main, .foot { width: 100%; max-width: var(--max); margin: 0 auto; padding-left: max(var(--page), env(safe-area-inset-left)); padding-right: max(var(--page), env(safe-area-inset-right)); }
.top { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 0.25rem 1.5rem; padding-top: 1.25rem; padding-bottom: 1.25rem; }
.name { font-weight: 600; font-size: 0.9375rem; letter-spacing: -0.01em; text-decoration: none; display: inline-flex; align-items: center; min-height: 2.75rem; }
.top nav { display: flex; gap: 0 2rem; flex-wrap: wrap; }
.top nav a { font-size: 0.8125rem; letter-spacing: 0.02em; color: var(--dim); text-decoration: none; display: inline-flex; align-items: center; min-height: 2.75rem; border-bottom: 1px solid transparent; }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--ink); }
@media (max-width: 30rem) {
  .top nav { gap: 0 1.25rem; }
}
main { padding-top: calc(var(--u) * 6); padding-bottom: calc(var(--u) * 12); }
@media (min-width: 46rem) {
  main { padding-top: calc(var(--u) * 11); }
}

.foot { border-top: 1px solid var(--line); padding-top: 2.5rem; padding-bottom: 3rem; display: grid; gap: 1.5rem var(--gutter); font-size: 0.75rem; letter-spacing: 0.02em; color: var(--dim); line-height: 1.6; }
.foot p { margin: 0; }
.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin: 0; }
.foot a { color: var(--dim); text-decoration: none; display: inline-flex; align-items: center; min-height: 1.75rem; }
.foot a:hover { color: var(--ink); }
@media (min-width: 46rem) {
  .foot { grid-template-columns: repeat(12, 1fr); }
  .foot .a { grid-column: 1 / span 4; }
  .foot .b { grid-column: 5 / span 4; }
  .foot .c { grid-column: 9 / span 4; text-align: right; }
}

/* MARK: Grid */

.grid { display: grid; gap: 1.5rem var(--gutter); }
@media (min-width: 60rem) {
  .grid { grid-template-columns: repeat(12, 1fr); }
}

/* MARK: Actions */

.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem 2rem; margin: 1.5rem 0 0; }
.act { font-size: 0.8125rem; font-weight: 500; letter-spacing: 0.02em; color: var(--accent); text-decoration: none; display: inline-flex; align-items: center; min-height: 2.75rem; border-bottom: 1px solid currentColor; padding-bottom: 0; line-height: 1; }
.act:hover { color: var(--ink); }
.act.quiet { color: var(--dim); border-bottom-color: var(--line-strong); }
.act.quiet:hover { color: var(--ink); border-bottom-color: var(--ink); }
.button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 2.875rem; padding: 0.625rem 1.25rem;
  border: 1px solid var(--ink); border-radius: 2px; background: transparent; color: var(--ink);
  font: 500 0.875rem/1.2 var(--font); letter-spacing: 0.01em; text-decoration: none; cursor: pointer; -webkit-tap-highlight-color: transparent;
}
.button:hover { background: var(--ink); color: var(--paper); }
.button[disabled] { opacity: 0.45; cursor: default; }
.button.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.button.primary:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.button.block { width: 100%; max-width: 24rem; min-height: 3.25rem; font-size: 0.9375rem; }
.link-button { background: none; border: 0; padding: 0; font: inherit; font-size: 0.8125rem; letter-spacing: 0.02em; color: var(--dim); text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 0.2em; cursor: pointer; min-height: 2.75rem; }
.link-button:hover { color: var(--ink); text-decoration-color: currentColor; }

/* MARK: Pictures */

figure { margin: 0; }
figcaption, .cap { font-size: 0.75rem; line-height: 1.5; letter-spacing: 0.02em; color: var(--dim); margin-top: 0.75rem; text-wrap: pretty; }
.phone img { width: 100%; border: 1px solid var(--line); border-radius: 1.25rem; }
.screen img { width: 100%; border: 1px solid var(--line); border-radius: 0.375rem; }
.shot.phone { max-width: 15rem; }
.shot.screen { max-width: 64rem; }
.shot { margin: 1.5rem 0 1rem; }
.phones { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gutter); max-width: 52rem; }
.phones .phone { max-width: 16rem; margin: 0; }
.phones.two { grid-template-columns: repeat(2, minmax(0, 1fr)); max-width: 34rem; }
@media (max-width: 40rem) {
  /* On a phone, a strip to swipe through, bleeding into the gutters so the next one shows. */
  .phones, .phones.two {
    display: flex; gap: 1rem; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none;
    margin-left: calc(-1 * var(--page)); margin-right: calc(-1 * var(--page)); padding: 0 var(--page) 0.25rem; max-width: none;
  }
  .phones::-webkit-scrollbar { display: none; }
  .phones .phone { flex: 0 0 min(15rem, 70%); scroll-snap-align: start; scroll-margin-left: var(--page); }
}

/* MARK: Home */

.hero { padding-bottom: calc(var(--u) * 10); }
.hero .tag { margin: 1.5rem 0 0; font-size: clamp(1.125rem, 1rem + 0.9vw, 1.625rem); line-height: 1.3; letter-spacing: -0.015em; font-weight: 400; max-width: 30ch; }
.hero .actions { margin-top: 1rem; }
.hero .idx p { margin: 0; font-size: 0.75rem; line-height: 1.6; letter-spacing: 0.02em; color: var(--dim); max-width: 24rem; }
.hero .idx b { display: block; font-size: 0.8125rem; font-weight: 500; color: var(--ink); letter-spacing: 0; }
@media (min-width: 60rem) {
  .hero .meta { grid-column: 1 / span 3; }
  .hero .tag { grid-column: 1 / span 7; margin-top: 2.5rem; }
  .hero .actions { grid-column: 1 / span 7; }
  .hero .idx { grid-column: 10 / span 3; align-self: end; text-align: right; }
}

.sec { border-top: 1px solid var(--line-strong); padding-top: calc(var(--u) * 5); padding-bottom: calc(var(--u) * 8); }
@media (min-width: 46rem) {
  .sec { padding-top: calc(var(--u) * 7); padding-bottom: calc(var(--u) * 12); }
}
.sec-head { display: grid; gap: 0.5rem var(--gutter); align-items: baseline; margin-bottom: 2rem; }
.sec-head .num { grid-column: 1; }
.sec-head h2 { grid-column: 1; margin: 0; }
.sec-head .say { grid-column: 1; margin: 0; font-size: 0.8125rem; line-height: 1.5; letter-spacing: 0.01em; color: var(--dim); }
@media (min-width: 60rem) {
  .sec-head { grid-template-columns: repeat(12, 1fr); margin-bottom: 2.5rem; }
  .sec-head .num { grid-column: 1 / span 1; }
  .sec-head h2 { grid-column: 2 / span 6; }
  .sec-head .say { grid-column: 9 / span 4; text-align: right; }
}
.sec-body { display: grid; gap: 2rem var(--gutter); align-items: start; }
.sec-body .copy { max-width: 36rem; }
.sec-body .copy p { margin: 0 0 1rem; }
.sec-body .copy p:last-child { margin-bottom: 0; }
@media (min-width: 60rem) {
  .sec-body { grid-template-columns: repeat(12, 1fr); }
  .sec-body .copy { grid-column: 2 / span 4; }
  .sec-body .show { grid-column: 7 / span 6; }
  .sec-body.wide .copy { grid-column: 2 / span 5; }
  .sec-body.wide .show { grid-column: 1 / -1; order: 2; margin-top: 1rem; }
}
.sec-body .show { min-width: 0; }
.sec-body .show .shot { margin: 0; }
.sec-body .show .screen { max-width: none; }
.closing .actions { margin-top: 1.25rem; }

/* MARK: Articles (how it works, legal, guide, app, mcp) */

.article { display: grid; gap: 2rem var(--gutter); }
.article .meta { align-self: start; }
.article .body { min-width: 0; }
@media (min-width: 60rem) {
  .article { grid-template-columns: repeat(12, 1fr); }
  .article .meta { grid-column: 1 / span 3; position: sticky; top: 2rem; }
  .article .body { grid-column: 4 / span 7; }
  .article.wide .body { grid-column: 4 / span 9; }
}
.prose { max-width: 38rem; }
.prose .lead { font-size: 1.0625rem; line-height: 1.5; margin-bottom: 1.5rem; max-width: 32rem; }
.prose h2 { margin: 2.75rem 0 0.75rem; padding-top: 1.25rem; border-top: 1px solid var(--line); font-size: 1.125rem; }
.prose h3 { margin: 1.75rem 0 0.375rem; font-size: 0.9375rem; }
.prose ul, .prose ol { padding-left: 1.25rem; }
.prose li { margin: 0.375rem 0; }
.prose .updated { font-size: 0.75rem; letter-spacing: 0.02em; color: var(--dim); text-transform: uppercase; margin: -0.5rem 0 1.5rem; }
.prose blockquote { margin: 1rem 0; padding-left: 1rem; border-left: 1px solid var(--line-strong); color: var(--dim); }
.prose .shot.phone { max-width: 13rem; }
.draft { margin: 0 0 1.5rem; padding: 0.625rem 0.875rem; border-left: 2px solid var(--accent); background: var(--warn-bg); font-size: 0.8125rem; }

.toc { list-style: none; padding: 0; margin: 0 0 1.5rem; font-size: 0.8125rem; letter-spacing: 0.01em; }
.toc li { margin: 0; display: flex; gap: 0.75rem; align-items: baseline; padding: 0.375rem 0; border-top: 1px solid var(--line); }
.toc li:last-child { border-bottom: 1px solid var(--line); }
.toc .num { min-width: 1.5rem; }
.toc a { text-decoration: none; color: var(--ink); }
.toc a:hover { text-decoration: underline; }
.toc h3 { font-size: 0.75rem; letter-spacing: 0.02em; color: var(--dim); text-transform: uppercase; font-weight: 400; margin: 1.5rem 0 0.5rem; }

.concepts section, .guide .part { padding-top: 1.5rem; margin-top: 2.5rem; border-top: 1px solid var(--line-strong); display: grid; gap: 0.5rem var(--gutter); }
.concepts section > h2, .guide .part > h2 { margin: 0; border: 0; padding: 0; font-size: clamp(1.25rem, 1.1rem + 0.6vw, 1.625rem); }
.concepts section > *:not(h2), .guide .part > *:not(h2) { max-width: 38rem; }
.concepts section .num, .guide .part .num { order: -1; }
.concepts .actions, .guide .actions { margin-top: 2.5rem; }
.guide .step { margin-top: 1.75rem; }
.guide .step h3 { margin: 0 0 0.25rem; }
.guide .step p { margin: 0 0 0.75rem; }
.guide .step ol, .guide .step ul { margin: 0 0 0.75rem; padding-left: 1.25rem; }
.guide .step .shot { margin: 0.75rem 0 0.5rem; }
.guide .step .phones { margin-top: 0.75rem; }

/* MARK: Forms (/start) */

.step h1 { font-size: clamp(1.375rem, 1.2rem + 0.8vw, 1.75rem); }
.form { max-width: 24rem; }
.form label, .form .label { display: block; font-size: 0.8125rem; font-weight: 500; letter-spacing: 0.01em; margin: 1.5rem 0 0.375rem; text-transform: none; color: var(--ink); }
.form .hint { display: block; color: var(--dim); font-size: 0.75rem; font-weight: 400; letter-spacing: 0.02em; margin-top: 0.125rem; }
.form input[type="email"], .form input[type="text"], .form select {
  width: 100%; min-height: 2.875rem; padding: 0.5rem 0.75rem; font: inherit; color: var(--ink);
  background: var(--paper); border: 1px solid var(--line-strong); border-radius: 2px;
}
.form input:focus-visible, .form select:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.form input.code { font-size: 1.5rem; letter-spacing: 0.2em; font-variant-numeric: tabular-nums; max-width: 12rem; }
.form .check { display: flex; gap: 0.75rem; align-items: flex-start; font-weight: 400; font-size: 0.9375rem; letter-spacing: 0; margin-top: 1.25rem; line-height: 1.45; }
.form .check input { width: 1.125rem; height: 1.125rem; margin: 0.2rem 0 0; flex: none; accent-color: var(--accent); }
.form .actions { margin-top: 1.5rem; }
.error { color: var(--error); font-size: 0.8125rem; font-weight: 500; }
.error::before { content: "⚠︎ "; }
.status { color: var(--dim); font-size: 0.8125rem; }
.turnstile { margin-top: 1.25rem; min-height: 4.25rem; }
.aside { margin-top: 3rem; font-size: 0.8125rem; color: var(--dim); }

/* MARK: Invite (/i/:token) */

.invite { max-width: 26rem; }
.invite h1 { font-size: clamp(1.375rem, 1.2rem + 0.8vw, 1.75rem); }
.invite .lead { margin-bottom: 1.5rem; }
.invite .then { margin: 2rem 0 0.25rem; font-size: 0.75rem; letter-spacing: 0.02em; text-transform: uppercase; color: var(--dim); }
.invite-code { font-size: 2.25rem; font-weight: 500; line-height: 1.2; font-variant-numeric: tabular-nums; letter-spacing: 0.1em; margin: 0 0 0.75rem; padding: 0.625rem 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); }
.invite .ends { font-size: 0.8125rem; color: var(--dim); }
.invite .shot.phone { max-width: 12rem; margin-top: 2.5rem; }

/* MARK: Use Claude (/mcp) */

.address { display: block; overflow-x: auto; padding: 0.75rem 0.875rem; background: var(--raised); border-radius: 2px; white-space: pre; font: 0.875rem var(--mono); }

/* MARK: Motion, print */

@media (prefers-reduced-motion: no-preference) {
  a, .button, .act, .top nav a { transition: color 0.15s, background-color 0.15s, border-color 0.15s; }
}
@media print {
  .top nav, .foot, .skip, .actions { display: none; }
}