/* sizeref website (fitlens.pages.dev). Static pages: no scripts, no web fonts, no inline styles (the CSP forbids them). */
:root {
  --bg: #FAFAF9; --surface: #FFFFFF; --ink: #1C1917; --ink2: #57534E; --line: #E7E5E4; --fill: #F5F5F4;
  --accent: #0F766E; --accent-deep: #0B5E58;
  --sans: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 17px; line-height: 1.6; }
main { max-width: 42rem; margin: 0 auto; padding: 32px 20px 24px; }
header.site { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; }
header.site a { color: inherit; text-decoration: none; display: inline-flex; align-items: center; gap: 12px; font-weight: 600; }
.mark { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 9px;
  background: var(--ink); color: #FFFFFF; font-weight: 700; font-size: 15px; letter-spacing: -0.02em; }
.mark.big { width: 64px; height: 64px; border-radius: 16px; font-size: 26px; }
.mark svg { display: block; flex-shrink: 0; } /* the ruler-tick mark (R-BRAND), drawn in the page: no image request */
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 8px; letter-spacing: -0.01em; }
h2 { font-size: 1.2rem; line-height: 1.3; margin: 32px 0 8px; }
p, ul { margin: 0 0 14px; }
ul { padding-left: 1.25rem; }
li { margin: 4px 0; }
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { color: var(--accent-deep); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.meta { color: var(--ink2); font-size: 0.95rem; margin-bottom: 20px; }
.lead { font-size: 1.1rem; color: var(--ink2); }
.summary { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; margin: 20px 0 8px; }
.summary p:last-child { margin-bottom: 0; }
.links { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0; }
.links a { display: inline-block; padding: 10px 16px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface);
  color: var(--ink); text-decoration: none; font-weight: 600; }
.links a:hover { border-color: var(--ink2); }
.path { font-weight: 600; }
footer { max-width: 42rem; margin: 0 auto; padding: 24px 20px 40px; color: var(--ink2); font-size: 0.9rem; border-top: 1px solid var(--line); }
footer a { color: var(--ink2); }
@media (max-width: 480px) { body { font-size: 16px; } h1 { font-size: 1.6rem; } main { padding-top: 24px; } }