/* Shared styling for BuildingsScore's static content pages (about, methodology,
   data-sources, faq, privacy). Light/dark via prefers-color-scheme. */
:root {
  --bg: #ffffff;
  --ink: #1a1d21;
  --muted: #5b636e;
  --line: #e6e8eb;
  --link: #1a73e8;
  --card: #f7f8fa;
  --accent: #1a73e8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181c;
    --ink: #e8eaed;
    --muted: #9aa3ad;
    --line: #2a2e34;
    --link: #8ab4f8;
    --card: #1d2126;
    --accent: #8ab4f8;
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.65;
  font-size: 16px;
}
.nav {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 5;
}
.nav-inner {
  max-width: 820px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 18px;
}
.nav-brand {
  font-weight: 700;
  font-size: 16px;
  text-decoration: none;
  color: var(--ink);
  margin-right: 4px;
}
.nav a:not(.nav-brand) {
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}
.nav a:not(.nav-brand):hover {
  color: var(--ink);
}
.nav .spacer {
  flex: 1;
}
.nav .cta {
  color: var(--accent);
  font-weight: 600;
}
.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}
a {
  color: var(--link);
}
h1 {
  font-size: 31px;
  margin: 0 0 8px;
  line-height: 1.2;
}
.lede {
  font-size: 18px;
  color: var(--muted);
  margin: 0 0 8px;
}
h2 {
  font-size: 21px;
  margin: 38px 0 12px;
}
h3 {
  font-size: 16px;
  margin: 24px 0 6px;
}
p {
  margin: 12px 0;
}
ul,
ol {
  padding-left: 22px;
}
li {
  margin: 7px 0;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 14.5px;
}
th,
td {
  text-align: left;
  padding: 9px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th {
  font-weight: 600;
  color: var(--muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  margin: 18px 0;
}
.note {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 13px 16px;
  font-size: 14px;
  color: var(--muted);
}
code {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 5px;
  font-size: 13.5px;
}
hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 40px 0;
}
.q {
  font-weight: 600;
  margin: 26px 0 4px;
  font-size: 17px;
}
footer.page {
  color: var(--muted);
  font-size: 13px;
  margin-top: 8px;
}