/* Cardinal, shared shell for the written pages.
   The landing page keeps its CSS inline, because it is one page and a
   render-blocking request would cost it more than the cache saves. Every page
   past the first shares this file instead, so the second one is free. */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  color-scheme: light;

  --red: #BD2630;
  --red-ink: #A81C26;
  --red-soft: #FBF0EE;

  --ink: #1F1F1F;
  --ink-2: #47382E;
  --ink-3: #5C5C5C;
  --muted: #706962;

  --bg: #FAF7F2;
  --card: #FCFAF5;
  --border: #E6E0D5;
  --border-soft: #EFEAE0;
  --band-bg: #F2EADC;
  --band-border: #E2D7C4;
  --icon: #96763F;

  --ok: #2F6B4F;
  --ok-soft: #EAF3EE;

  --s-1: 0.25rem; --s-2: 0.5rem;  --s-3: 0.75rem; --s-4: 1rem;
  --s-5: 1.5rem;  --s-6: 2rem;    --s-7: 3rem;    --s-8: 4rem;

  --r-sm: 12px; --r-md: 16px; --r-lg: 24px; --r-xl: 28px; --r-full: 999px;

  --font-display: ui-serif, 'New York', 'Iowan Old Style', 'Palatino Linotype', Palatino, 'Charter', Georgia, serif;
  --font-text: ui-serif, 'New York', 'Iowan Old Style', 'Palatino Linotype', Palatino, 'Charter', Georgia, serif;
  --font-ui: ui-rounded, 'SF Pro Rounded', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Cardinal's marker: the same amber at the same 26% the app lays down while
     the stroke is still under your finger. Drag across any sentence here and
     the page marks it the way the reader does. */
  --marker: 245, 184, 87;
  --marker-drag: rgba(var(--marker), 0.26);
}

body {
  font-family: var(--font-text);
  font-optical-sizing: auto;
  background: var(--bg);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='260' height='260'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.68' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.10  0 0 0 0 0.075  0 0 0 0 0.03  0 0 0 0.105 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  background-size: 260px 260px;
  mix-blend-mode: multiply;
}

::selection { background: var(--marker-drag); color: var(--ink); }
::-moz-selection { background: var(--marker-drag); color: var(--ink); }

a { color: var(--red-ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--red); outline-offset: 3px; border-radius: 4px; }

html { scrollbar-color: var(--border) transparent; }
::-webkit-scrollbar { width: 12px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; border: 3px solid var(--bg); }

img { max-width: 100%; height: auto; display: block; }

/* For text a screen reader needs and the page does not show, such as a table
   caption whose heading already says the same thing to a sighted reader. */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  padding: 0 max(var(--s-5), env(safe-area-inset-left));
}
.wrap-wide { max-width: 1100px; }

.skip {
  position: fixed;
  top: 10px; left: 10px;
  z-index: 99;
  transform: translateY(-160%);
  background: var(--ink); color: #fff;
  padding: 10px 16px; border-radius: var(--r-sm);
  font-family: var(--font-ui); font-size: 14px;
}
.skip:focus { transform: translateY(0); text-decoration: none; }

/* ---------- Header ---------- */
header.top {
  padding: var(--s-6) 0 var(--s-5);
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s-4); flex-wrap: wrap;
}
.brand {
  display: inline-flex; align-items: center;
  min-height: 44px;
  font-family: var(--font-display);
  font-weight: 600; font-size: 21px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.brand:hover { text-decoration: none; color: var(--red-ink); }

/* ---------- Breadcrumb ---------- */
.crumb {
  font-family: var(--font-ui);
  font-size: 13.5px;
  color: var(--muted);
  margin-bottom: var(--s-5);
}
.crumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: var(--s-2); }
.crumb li { display: flex; align-items: center; gap: var(--s-2); }
.crumb li + li::before { content: "/"; color: var(--band-border); }
.crumb a { color: var(--ink-3); }
.crumb [aria-current] { color: var(--muted); }

/* ---------- Type ---------- */
h1 {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5.6vw, 3.1rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin-bottom: var(--s-4);
  text-wrap: balance;
}
h1 em { font-style: italic; }
.lede {
  font-size: 1.15rem;
  line-height: 1.62;
  color: var(--ink-2);
  max-width: 62ch;
  text-wrap: pretty;
}
.byline {
  font-family: var(--font-ui);
  font-size: 13.5px;
  color: var(--muted);
  margin-top: var(--s-5);
  padding-top: var(--s-4);
  border-top: 1px solid var(--border-soft);
}

article { padding-top: var(--s-7); }
article h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.022em;
  line-height: 1.22;
  margin: var(--s-8) 0 var(--s-4);
  text-wrap: balance;
}
article h3 {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.2vw, 1.35rem);
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: var(--s-6) 0 var(--s-3);
}
article p { margin-bottom: var(--s-4); max-width: 68ch; text-wrap: pretty; }
article ul, article ol { margin: 0 0 var(--s-5) 0; padding-left: 0; list-style: none; max-width: 68ch; }
article li { margin-bottom: var(--s-3); padding-left: var(--s-5); position: relative; }
article li::before {
  content: "";
  position: absolute; left: 0; top: 0.72em;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--icon);
}
article ol { counter-reset: step; }
article ol li::before {
  counter-increment: step;
  content: counter(step);
  width: auto; height: auto;
  top: 0;
  background: none;
  font-family: var(--font-ui);
  font-size: 14px; font-weight: 600;
  color: var(--icon);
}
article strong { color: var(--ink); font-weight: 600; }

/* Marked words, the way the app marks them. */
mark {
  background: none;
  color: var(--ink);
  background-image: linear-gradient(var(--marker-drag), var(--marker-drag));
  background-repeat: no-repeat;
  background-size: 100% 100%;
  padding: 0.08em 0.16em;
  margin: 0 -0.06em;
  border-radius: 0.28em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

/* The one piece of motion this site owns, and the only one worth carrying
   across every page: the mark draws itself left to right, once, at the speed
   of a drag, which is how the highlight is actually made in the app. It runs
   when the sentence it marks has settled on screen, so it reads as a hand
   passing over the words rather than as a page loading.

   Scoped to the absence of .no-js so a blocked script leaves the phrase
   marked rather than unmarked. */
html:not(.no-js) .marker { background-size: 0% 100%; }
html:not(.no-js) .marker.drawn {
  background-size: 100% 100%;
  transition: background-size 0.62s cubic-bezier(0.32, 0.72, 0.3, 1);
}

/* ---------- Legal ----------------------------------------------------
   Privacy and Terms carried their own stylesheet from before the site was
   redesigned: system sans, cool grey, a different red. They read as a
   different product. The text is untouched; only the shell around it moved. */
.legal .meta {
  font-family: var(--font-ui);
  font-size: 13.5px;
  color: var(--muted);
  margin: calc(-1 * var(--s-2)) 0 var(--s-6);
}
.legal .intro {
  background: var(--band-bg);
  border-radius: var(--r-lg);
  padding: var(--s-5) clamp(1.25rem, 3vw, 1.75rem);
  margin-bottom: var(--s-7);
  color: var(--ink-2);
  max-width: none;
}
/* Numbered clause headings, smaller than an article's and set in the UI face
   so the long ordered run reads as a contents list rather than as prose. */
.legal h2 {
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--muted);
  margin: var(--s-7) 0 var(--s-3);
  padding-bottom: var(--s-3);
  border-bottom: 1px solid var(--border-soft);
}
.legal p { font-size: 16.5px; color: var(--ink-3); }
.legal li { font-size: 16.5px; color: var(--ink-3); }
.legal code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.88em;
  background: var(--band-bg);
  border-radius: 5px;
  padding: 0.1em 0.35em;
}
.legal h1 + .meta { margin-top: calc(-1 * var(--s-2)); }

/* ---------- Callout ---------- */
.note {
  background: var(--band-bg);
  border-radius: var(--r-lg);
  padding: var(--s-5) clamp(1.25rem, 3vw, 2rem);
  margin: var(--s-6) 0;
  max-width: 68ch;
}
.note p:last-child { margin-bottom: 0; }
.note h3 { margin-top: 0; }

/* ---------- Screenshot pair ---------- */
/* Two captures side by side, or stacked once the pair would be too narrow to
   read. Unframed with a soft drop-shadow, matching the home page: the corner
   mask is baked into the asset's alpha, so the shadow has to follow the alpha
   rather than the box. */
.shots {
  display: flex;
  gap: clamp(1rem, 4vw, 2.5rem);
  align-items: flex-start;
  justify-content: center;
  margin: var(--s-7) 0;
  max-width: 68ch;
}
.shots figure { flex: 1 1 0; min-width: 0; margin: 0; }
.shots img {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 18px 34px rgba(62, 39, 25, 0.16))
          drop-shadow(0 2px 6px rgba(62, 39, 25, 0.10));
}
.shots figcaption {
  margin-top: var(--s-4);
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--ink-2);
}
@media (max-width: 560px) {
  .shots { flex-direction: column; align-items: stretch; }
  .shots figure { max-width: 320px; width: 100%; margin: 0 auto; }
  .shots figcaption { text-align: center; }
}

/* ---------- Table ---------- */
.table-scroll { overflow-x: auto; margin: var(--s-5) 0 var(--s-6); }
table {
  border-collapse: collapse;
  width: 100%;
  min-width: 480px;
  font-size: 16px;
  font-variant-numeric: tabular-nums;
}
th, td {
  text-align: left;
  padding: var(--s-3) var(--s-4);
  border-bottom: 1px solid var(--border-soft);
  vertical-align: top;
}
th {
  font-family: var(--font-ui);
  font-size: 13px; font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}
td { color: var(--ink-3); }
td:first-child { color: var(--ink); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s-2);
  min-height: 52px;
  padding: 14px 28px;
  border-radius: var(--r-full);
  font-family: var(--font-ui);
  font-size: 16px; font-weight: 600;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}
.btn svg { width: 18px; height: 18px; flex: none; }
.btn-primary {
  background: var(--red); color: #fff;
  box-shadow: 0 8px 22px -8px rgba(189, 38, 48, 0.55);
}
.btn-primary:hover,
.btn-primary:focus-visible {
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -10px rgba(189, 38, 48, 0.6);
}
.btn-primary:active { transform: translateY(0); }

/* ---------- Closing call ---------- */
.cta {
  margin: var(--s-8) 0 0;
  padding: clamp(1.75rem, 5vw, 2.75rem);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  text-align: center;
}
.cta h2 { margin-top: 0; }
.cta p { margin-left: auto; margin-right: auto; }
.cta .fine {
  font-family: var(--font-ui);
  font-size: 13.5px;
  color: var(--muted);
  margin-top: var(--s-4);
  margin-bottom: 0;
}

/* ---------- Read next ---------- */
.next { margin-top: var(--s-8); }
.next h2 { font-size: 1.15rem; margin-bottom: var(--s-4); }
.next ul { display: grid; gap: var(--s-3); list-style: none; padding: 0; max-width: none; }
.next li { padding-left: 0; margin: 0; }
.next li::before { display: none; }
.next a {
  display: block;
  padding: var(--s-4) var(--s-5);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  color: var(--ink);
  transition: border-color 0.2s ease, transform 0.25s var(--ease-out);
}
.next a:hover,
.next a:focus-visible { text-decoration: none; border-color: var(--band-border); transform: translateY(-2px); }
.next strong { display: block; font-family: var(--font-display); font-size: 17px; margin-bottom: 2px; }
.next span { font-family: var(--font-ui); font-size: 14px; color: var(--ink-3); }

/* ---------- Footer ---------- */
footer.site {
  margin-top: var(--s-8);
  padding: var(--s-7) 0 var(--s-8);
  border-top: 1px solid var(--border-soft);
  font-family: var(--font-ui);
  font-size: 14.5px;
}
.foot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--s-6) var(--s-5);
  margin-bottom: var(--s-7);
}
.foot-grid h2 {
  font-family: var(--font-ui);
  font-size: 12.5px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--muted);
  margin: 0 0 var(--s-3);
}
.foot-grid ul { list-style: none; display: grid; gap: var(--s-2); margin: 0; padding: 0; max-width: none; }
.foot-grid li { margin: 0; padding: 0; }
.foot-grid li::before { display: none; }
.foot-grid a { color: var(--ink-3); display: inline-flex; align-items: center; min-height: 30px; }
.foot-grid a:hover { color: var(--red-ink); }
.foot-base {
  display: flex; flex-wrap: wrap; gap: var(--s-3) var(--s-5);
  justify-content: space-between; align-items: center;
  padding-top: var(--s-5);
  border-top: 1px solid var(--border-soft);
  color: var(--muted);
  font-size: 13.5px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }

  /* Reduced motion means gentler, not absent: the phrase still ends up
     marked, it simply does not draw. */
  html:not(.no-js) .marker { background-size: 100% 100% !important; }
}