/* Ink on paper: warm paper, near-black ink, one tattoo-red accent. */
:root {
  --paper: #faf7f2;
  --card: #ffffff;
  --ink: #161412;
  --muted: #6b645b;
  --line: #e6dfd4;
  --line-strong: #cfc6b8;
  --accent: #a3202a;
  --accent-hi: #8a1821;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max: 760px;
  --wide: 1080px;
  --r: 10px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 17px/1.7 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-hi); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
img { max-width: 100%; height: auto; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.wrap.wide { max-width: var(--wide); }
.skip { position: absolute; left: 12px; top: -48px; background: var(--ink); color: #fff; padding: 8px 12px; border-radius: 6px; z-index: 10; }
.skip:focus { top: 12px; }

.site-header { border-bottom: 1px solid var(--line); background: var(--paper); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px 22px; padding-top: 14px; padding-bottom: 14px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 700 19px/1 var(--serif); letter-spacing: 0.01em; }
.brand img { width: 30px; height: 30px; }
.site-nav { display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: 15px; }
.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav a[aria-current="page"] { text-decoration: underline 2px var(--accent); text-underline-offset: 6px; }

main { padding: 40px 0 72px; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.2; color: var(--ink); }
h1 { font-size: 46px; margin: 0 0 10px; letter-spacing: -0.01em; }
h2 { font-size: 30px; margin: 56px 0 14px; }
h3 { font-size: 21px; margin: 30px 0 8px; }
p, ul, ol { margin: 0 0 16px; }
li { margin-bottom: 6px; }
.lede { font-size: 19px; color: var(--muted); max-width: 640px; margin-bottom: 26px; }
.note { font-size: 14px; color: var(--muted); }

/* tool */
.tool { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 22px; box-shadow: 0 1px 0 var(--line); }
.tool-form { display: grid; grid-template-columns: 1fr 1fr auto; gap: 10px; align-items: end; }
.tool-form label { display: grid; gap: 5px; font-size: 13px; font-weight: 600; color: var(--muted); }
.tool-form input { font: 18px/1.3 var(--sans); padding: 11px 13px; border: 1px solid var(--line-strong); border-radius: 8px; background: #fff; color: var(--ink); }
.btn { font: 600 16px/1 var(--sans); padding: 13px 18px; border-radius: 8px; border: 1px solid var(--line-strong); background: #fff; color: var(--ink); cursor: pointer; touch-action: manipulation; }
.btn:hover { border-color: var(--ink); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hi); border-color: var(--accent-hi); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0 0; }
.chips button { font: 14px/1 var(--sans); padding: 7px 11px; border-radius: 999px; border: 1px solid var(--line); background: var(--paper); color: var(--ink); cursor: pointer; }
.chips button:hover { border-color: var(--line-strong); }
.tool-note { min-height: 1.5em; margin: 12px 0 0; font-size: 15px; color: var(--muted); }
.result { margin-top: 16px; text-align: center; border-top: 1px solid var(--line); padding-top: 22px; }
.result canvas { display: block; margin: 0 auto; max-width: 100%; height: auto; transition: transform 0.9s cubic-bezier(0.6, 0, 0.3, 1); }
.result canvas.flipped { transform: rotate(180deg); }
.result-meta { margin: 10px 0 0; font-size: 14px; color: var(--muted); }
.result-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 14px; }
.styles-head { margin: 30px 0 10px; font: 700 20px/1.2 var(--serif); }
.style-grid, .partner-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
.partners { margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--line); }
.partners-head { margin: 0 0 4px; font: 700 20px/1.25 var(--serif); }
.partners-note { margin: 0 0 12px; font-size: 15px; color: var(--muted); }
.style-card { display: grid; gap: 4px; padding: 10px 10px 9px; text-align: center; background: #fff; border: 1px solid var(--line); border-radius: var(--r); cursor: pointer; font: inherit; color: var(--ink); }
.style-card:hover { border-color: var(--line-strong); }
.style-card[aria-pressed="true"] { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.style-card canvas { width: 100%; height: auto; transition: transform 0.7s cubic-bezier(0.6, 0, 0.3, 1); }
@media (hover: hover) { .style-card:hover canvas { transform: rotate(180deg); } }
.style-name { font-weight: 600; font-size: 14px; }
.style-rating { font-size: 12.5px; color: var(--muted); }

/* content */
.steps { counter-reset: s; list-style: none; padding: 0; }
.steps li { counter-increment: s; position: relative; padding-left: 40px; margin-bottom: 12px; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: 1px; width: 26px; height: 26px; border-radius: 50%; background: var(--ink); color: #fff; font: 700 14px/26px var(--sans); text-align: center; }
.pairs { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; list-style: none; }
.pairs li { margin: 0; padding: 6px 12px; background: #fff; border: 1px solid var(--line); border-radius: 8px; font: 600 16px/1.3 var(--serif); }
.examples { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin: 0 0 18px; }
.examples figure { margin: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 12px; text-align: center; }
.examples img { display: block; width: 100%; }
.examples figcaption { margin-top: 6px; font-size: 14px; color: var(--muted); }
.examples a { text-decoration: none; color: inherit; }
.table-scroll { overflow-x: auto; margin: 0 0 18px; }
table { width: 100%; border-collapse: collapse; font-size: 15.5px; }
th, td { text-align: left; padding: 10px 12px 10px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
details { border-bottom: 1px solid var(--line); }
details:first-of-type { border-top: 1px solid var(--line); }
summary { cursor: pointer; padding: 14px 0; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--accent); font-size: 22px; line-height: 1; }
details[open] summary::after { content: "–"; }
details p { margin: 0 0 16px; color: #3d3833; }
.cta-box { margin: 40px 0 0; padding: 22px; background: #fff; border: 1px solid var(--line); border-radius: 14px; }
.cta-box p { margin-bottom: 12px; }
.cta-link { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; font-weight: 600; padding: 11px 16px; border-radius: 8px; }
.cta-link:hover { background: var(--accent-hi); color: #fff; }

.site-footer { border-top: 1px solid var(--line); padding: 26px 0 44px; font-size: 14px; color: var(--muted); }
.site-footer p { margin: 0 0 8px; }
.site-footer a { color: var(--muted); }

@media (max-width: 720px) {
  h1 { font-size: 36px; }
  h2 { font-size: 26px; }
  .tool { padding: 16px; }
  .tool-form { grid-template-columns: 1fr; }
  .style-grid, .partner-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
}
@media (prefers-reduced-motion: reduce) {
  .result canvas, .style-card canvas { transition: none; }
}