/* Halvsies — "Paper & Blade" letterpress system.
   Shared by index / support / privacy. Zero dependencies, no build.
   Binding rules (see the app's .impeccable.md):
   warm kinari paper, warm ink, vermilion reserved for the cut only;
   New York (system serif) for the wordmark + numerals, SF Pro for the
   tracked-uppercase microcaps labels; no button chrome, no bounce. */

:root {
  --paper:    #f6f1e7;   /* warm kinari, never pure white */
  --paper-2:  #efe8d8;
  --ink:      #26211b;   /* warm near-black */
  --ink-soft: #5c5346;   /* body ink, a touch lifted */
  --faded:    #726a5b;   /* secondary ink — microcaps, captions. brief's
                            #8b8170 only hits 3.4:1 on paper; nudged deeper to
                            clear WCAG AA (4.75:1) for the small tracked labels */
  --rule:     #ddd2bf;   /* hairline */
  --rule-2:   #e7ddcc;   /* fainter hairline */
  --vermilion:#d74b27;   /* THE cut. nothing else wears it. */

  /* washi swatches — the paper a shape is cut from */
  --sumi:   #2b2620;
  --indigo: #3f5573;
  --moss:   #5f6f52;
  --clay:   #b5654a;
  --ochre:  #c2913e;
  --plum:   #6e4a5e;

  --serif: ui-serif, 'New York', Georgia, 'Times New Roman', serif;
  --sans:  -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);   /* exponential ease-out — no bounce */
  --measure: 33rem;
  --gutter: clamp(1.25rem, 5vw, 2rem);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background-color: var(--paper);
  /* a near-invisible ink stipple, so the paper is never flat */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.0625rem, 0.98rem + 0.35vw, 1.15rem);
  line-height: 1.72;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-kerning: normal;
}

main { max-width: var(--measure); margin: 0 auto; padding: clamp(3rem, 9vw, 5.5rem) var(--gutter) 4rem; }

p { margin: 0 0 1.1rem; color: var(--ink-soft); }
p strong { color: var(--ink); font-weight: 600; }
em { font-style: italic; }

a { color: var(--ink); text-decoration-color: var(--rule); text-underline-offset: 0.18em; }
a:hover { text-decoration-color: var(--faded); }

.microcaps {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--faded);
}

/* the wordmark — serif, the slash IS the cut */
.wordmark {
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: 0.005em;
  line-height: 1;
  margin: 0;
}
.wordmark a { color: inherit; text-decoration: none; }
.wordmark .blade {
  color: var(--vermilion);
  font-style: italic;
  font-weight: 400;
  padding: 0 0.02em;
}

hr { border: 0; border-top: 1px solid var(--rule); margin: clamp(2.75rem, 7vw, 3.75rem) 0; }
hr.faint { border-top-color: var(--rule-2); }

/* ----- hero: the cut leads, the wordmark supports ----- */
.hero { text-align: center; }
.hero .wordmark { font-size: clamp(2.2rem, 1.6rem + 3vw, 3rem); margin: 1.5rem 0 0.55rem; }
.hero .tagline { margin: 0 0 1.5rem; }
.lede {
  font-size: clamp(1.15rem, 1.02rem + 0.7vw, 1.4rem);
  line-height: 1.5;
  color: var(--ink);
  margin: 0 auto 2.1rem;
  max-width: 28rem;
  text-wrap: balance;
}

/* the halved shape, cut on load — large enough to be the subject, not a logo */
.mark { display: block; margin: 0 auto; width: clamp(176px, 52vw, 296px); height: auto; overflow: visible; }
.mark .half { transform-box: fill-box; transform-origin: center; }
.mark .half-l { transform: translateX(-5px) rotate(-2deg); }
.mark .half-r { transform: translateX(5px)  rotate(2deg); }
.mark .cut { stroke: var(--vermilion); stroke-width: 2.5; stroke-dasharray: 122; stroke-dashoffset: 0; }
@media (prefers-reduced-motion: no-preference) {
  .mark .cut    { animation: cut-draw 620ms var(--ease) 240ms both; }
  .mark .half-l { animation: drift-l 900ms var(--ease) 760ms both; }
  .mark .half-r { animation: drift-r 900ms var(--ease) 760ms both; }
}
@keyframes cut-draw { from { stroke-dashoffset: 122; } to { stroke-dashoffset: 0; } }
@keyframes drift-l { from { transform: translateX(0) rotate(0); } to { transform: translateX(-5px) rotate(-2deg); } }
@keyframes drift-r { from { transform: translateX(0) rotate(0); } to { transform: translateX(5px) rotate(2deg); } }

/* ----- quiet affordances (text, never button chrome) ----- */
.affordances {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: 0.6rem 2.2rem; margin: 0;
}
.affordances.repeat { margin-top: clamp(2rem, 6vw, 2.75rem); }
.affordance {
  font-family: var(--sans);
  font-size: 0.74rem; font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase; text-decoration: none;
  color: var(--ink);
  display: inline-flex; align-items: center; gap: 0.55ch;
  min-height: 44px; padding: 0.4rem 0;          /* a real touch target, no chrome */
}
.affordance .label {
  border-bottom: 1px solid var(--ink); padding-bottom: 0.3rem;
  transition: border-color 200ms var(--ease), color 200ms var(--ease);
}
.affordance .arrow { font-family: var(--serif); font-weight: 400; font-size: 1.05em; transition: transform 240ms var(--ease); }
.affordance:hover .arrow { transform: translateX(0.22em); }
.affordance.secondary { color: var(--faded); }
.affordance.secondary .label { border-bottom-color: var(--rule); }
.affordance.secondary:hover, .affordance.secondary:hover .label { color: var(--ink); border-bottom-color: var(--faded); }

/* ----- editorial sections ----- */
.kicker { display: block; margin: 0 0 0.4rem; }
section h2.title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.55rem, 1.2rem + 1.6vw, 2rem);
  line-height: 1.15; letter-spacing: 0.01em;
  margin: 0 0 0.7rem; color: var(--ink);
}
.entry + .entry { margin-top: clamp(2.5rem, 6vw, 3.25rem); }

/* ----- facts — serif numerals, microcaps labels, left-aligned ----- */
.facts {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 1.8rem 1.5rem; justify-items: start;
  margin: 0; padding: 0; list-style: none; text-align: left;
}
@media (min-width: 34rem) { .facts { grid-template-columns: repeat(4, 1fr); gap: 1.5rem; } }
.facts li { display: flex; flex-direction: column; gap: 0.4rem; align-items: flex-start; }
.facts .microcaps { max-width: 7rem; }
.facts .n {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 1.5rem + 2.4vw, 2.8rem);
  font-weight: 500; line-height: 1; color: var(--ink);
  font-variant-numeric: lining-nums;
}

.closing {
  font-family: var(--serif);
  font-size: clamp(1.3rem, 1.1rem + 1vw, 1.7rem);
  line-height: 1.4; text-align: center; color: var(--ink);
  text-wrap: balance; margin: 0;
}

/* ----- FAQ: the web-standard disclosure (details/summary) accordion ----- */
.faq { margin: 0; }
.faq details { border-top: 1px solid var(--rule); }
.faq details:last-of-type { border-bottom: 1px solid var(--rule); }
.faq summary {
  display: flex; align-items: baseline; justify-content: space-between; gap: 1.25rem;
  cursor: pointer; list-style: none; padding: 1.15rem 0;
  font-family: var(--serif); font-size: 1.12rem; font-weight: 500; color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; border-radius: 2px; }
/* a hairline "+" drawn in ink; on open it turns 45° into "×" — the cut, made quiet */
.faq summary .sign {
  position: relative; flex: 0 0 auto; align-self: center;
  width: 13px; height: 13px;
  transition: transform 280ms var(--ease);
}
.faq summary .sign::before, .faq summary .sign::after {
  content: ""; position: absolute; left: 50%; top: 50%; background: var(--faded);
  transition: background 200ms var(--ease);
}
.faq summary .sign::before { width: 13px; height: 1px; transform: translate(-50%, -50%); }
.faq summary .sign::after  { width: 1px; height: 13px; transform: translate(-50%, -50%); }
.faq details[open] summary .sign { transform: rotate(45deg); }
.faq details[open] summary .sign::before, .faq details[open] summary .sign::after { background: var(--ink); }
.faq .answer { padding: 0 0 1.3rem; }
.faq .answer p:last-child { margin-bottom: 0; }
@media (prefers-reduced-motion: no-preference) {
  .faq details[open] .answer { animation: answer-in 320ms var(--ease) both; }
}
@keyframes answer-in { from { opacity: 0; transform: translateY(-0.35rem); } to { opacity: 1; transform: translateY(0); } }

/* ----- footer ----- */
footer { color: var(--faded); margin-top: clamp(3rem, 8vw, 4rem); }
footer p { color: var(--faded); font-size: 0.9rem; margin: 0; }
.footer-nav {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center;
  gap: 0.6rem 0.9rem; text-align: center;
}
.footer-nav .dot { color: var(--rule); }
.footer-nav a { font-family: var(--sans); font-size: 0.7rem; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; text-decoration: none; color: var(--faded); }
.footer-nav a:hover { color: var(--ink); }

/* ----- document pages (support / privacy) ----- */
.doc h1.wordmark { font-size: clamp(2.2rem, 7vw, 2.9rem); margin: 0 0 0.4rem; }
.doc header .microcaps { margin-top: 0.5rem; }
.doc .lede { text-align: left; margin-left: 0; max-width: var(--measure); }
.doc section + section { margin-top: clamp(2.5rem, 6vw, 3.5rem); }
.doc h2.title { font-size: clamp(1.35rem, 1.15rem + 1vw, 1.7rem); margin: 0 0 0.7rem; }