/* Metrology Atlas, home site. Brand: navy #0F2A44, ECG orange #F26B1D, sea #D4E8F5, land #DCEBD2. */
:root {
  --ink: #0F2A44;
  --ink-2: #3D5266;
  --ink-3: #66788A;
  --accent: #F26B1D;
  --accent-ink: #B4480A;
  --sea: #D4E8F5;
  --land: #DCEBD2;
  --paper: #F7F6F2;
  --card: #FFFFFF;
  --line: #DCDCD4;
  --head: "Sora", system-ui, sans-serif;
  --body: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #E8EEF4;
    --ink-2: #B8C6D3;
    --ink-3: #8C9CAB;
    --accent: #F58A4B;
    --accent-ink: #F7A26F;
    --sea: #1C3550;
    --land: #23382A;
    --paper: #0C1724;
    --card: #12212F;
    --line: #253646;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 17px/1.6 var(--body);
}
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
main.wrap { padding-top: 8px; padding-bottom: 48px; }
a { color: var(--ink); text-decoration-color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-ink); }
h1, h2, h3 { font-family: var(--head); font-weight: 600; line-height: 1.2; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.9rem, 4.5vw, 2.8rem); margin: 0.3em 0 0.4em; }
h2 { font-size: 1.35rem; margin: 2.2em 0 0.7em; }
h3 { font-size: 1.1rem; margin: 0 0 0.4em; }
p { margin: 0 0 1em; }
.kicker { font-family: var(--head); font-weight: 500; font-size: 0.8rem; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--accent-ink); margin: 0; }
.kicker a { color: inherit; text-decoration: none; }
.lede { font-size: 1.15rem; color: var(--ink-2); max-width: 46em; }
.note { color: var(--ink-3); font-size: 0.95rem; }

/* header and footer */
.top { border-bottom: 1px solid var(--line); background: var(--paper); }
.top-in { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding-top: 14px; padding-bottom: 14px; }
.brand img { display: block; height: 36px; width: auto; }
nav { display: flex; gap: 20px; flex-wrap: wrap; }
nav a { font-family: var(--head); font-weight: 500; font-size: 0.92rem; text-decoration: none; color: var(--ink-2); }
nav a:hover, nav a[aria-current] { color: var(--ink); box-shadow: inset 0 -2px 0 var(--accent); }
.foot { border-top: 1px solid var(--line); color: var(--ink-3); font-size: 0.9rem; }
.foot-in { padding-top: 20px; padding-bottom: 28px; }
.foot-in p { margin: 0.2em 0; }
.foot a { color: var(--ink-2); }

/* home */
.hero { display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center; padding: 40px 0 8px; }
.hero-mark { width: 200px; height: 200px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 1.4em; }
.btn { display: inline-block; font-family: var(--head); font-weight: 500; font-size: 0.95rem; padding: 10px 18px;
  border-radius: 8px; background: var(--ink); color: var(--paper); text-decoration: none; }
.btn:hover { background: var(--accent-ink); color: #fff; }
.btn-quiet { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--ink); }
.btn-quiet:hover { background: var(--sea); color: var(--ink); }
.grid3 { list-style: none; padding: 0; margin: 0 0 1.2em; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid3 li { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; }
.grid3 strong { display: block; font-family: var(--head); font-weight: 600; margin-bottom: 0.3em; }
.states { margin-top: 1em; }
.cards { display: grid; gap: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-left: 5px solid var(--accent);
  border-radius: 10px; padding: 20px 22px; }
.card h3 a { text-decoration: none; }
.card .meta { color: var(--ink-3); font-size: 0.92rem; margin-bottom: 0.6em; }
.tag { display: inline-block; font-size: 0.78rem; font-weight: 600; padding: 1px 8px; margin-right: 6px;
  border-radius: 999px; background: var(--land); color: var(--ink); }
.counts { font-size: 0.92rem; color: var(--ink-2); }
.links { font-size: 0.95rem; margin: 0; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.plain { list-style: none; padding: 0; margin: 0; }
.plain li { margin-bottom: 0.9em; }

/* news */
.news { list-style: none; padding: 0; margin: 0 0 1em; }
.news li { display: grid; grid-template-columns: 7.5em 1fr; column-gap: 12px; padding: 10px 0;
  border-bottom: 1px solid var(--line); }
.news time { color: var(--ink-3); font-variant-numeric: tabular-nums; }
.news .sum { grid-column: 2; color: var(--ink-2); font-size: 0.95rem; }
.post { max-width: 44em; }
.post h1 { font-size: clamp(1.6rem, 3.6vw, 2.2rem); }

/* prose pages */
main ul:not(.grid3):not(.plain):not(.news) { padding-left: 1.2em; }
code { font-size: 0.9em; background: var(--sea); padding: 0 4px; border-radius: 4px; }

@media (max-width: 760px) {
  body { font-size: 16px; }
  .hero { grid-template-columns: 1fr; padding-top: 24px; }
  .hero-mark { display: none; }
  .grid3, .two { grid-template-columns: 1fr; }
  .news li { grid-template-columns: 1fr; }
  .news .sum { grid-column: 1; }
  nav { gap: 14px; }
}