/* The extension's palette (entrypoints/popup/style.css), with the system
   font: no web fonts, so the site makes no third-party requests. */
:root {
  --bg: #f6f6f6;
  --card: #ffffff;
  --fg: #0c0c0d;
  --text: rgb(12 12 13 / 0.82);
  --muted: rgb(12 12 13 / 0.56);
  --line: rgb(12 12 13 / 0.1);
  --bell: #087f8c;
  --header: rgb(246 246 246 / 0.8);
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #00111b;
    --card: #021b27;
    --fg: #ffffff;
    --text: rgb(255 255 255 / 0.82);
    --muted: rgb(255 255 255 / 0.56);
    --line: rgb(255 255 255 / 0.1);
    --bell: #7cd0e8;
    --header: rgb(0 17 27 / 0.8);
  }
}

* {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 72px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font:
    17px/1.65 -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    system-ui,
    sans-serif;
  -webkit-font-smoothing: antialiased;
}
a {
  color: var(--bell);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}
strong {
  color: var(--fg);
  font-weight: 600;
}
code {
  font: 0.88em ui-monospace, 'SF Mono', Menlo, monospace;
  padding: 1px 5px;
  border-radius: 5px;
  background: var(--line);
  color: var(--fg);
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header: stays put while reading, the page shows faintly through it. */
header.site {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--header);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--line);
}
header.site .wrap {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 52px;
}
header.site .brand {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-right: auto;
  color: var(--fg);
  font-weight: 600;
  text-decoration: none;
}
header.site nav {
  display: flex;
  gap: 20px;
  font-size: 15px;
  overflow-x: auto;
}
header.site nav a {
  color: var(--muted);
  white-space: nowrap;
  text-decoration: none;
}
header.site nav a:hover,
header.site nav a[aria-current='page'] {
  color: var(--fg);
}

main {
  padding: 56px 0 88px;
}
h1,
h2,
h3 {
  color: var(--fg);
  font-weight: 600;
  letter-spacing: -0.015em;
}
h1 {
  font-size: clamp(34px, 7vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin: 0 0 16px;
}
h2 {
  font-size: 26px;
  line-height: 1.25;
  margin: 0 0 8px;
}
h3 {
  font-size: 17px;
  margin: 28px 0 4px;
}
p {
  margin: 0 0 16px;
}
ul {
  padding-left: 20px;
}
li {
  margin: 6px 0;
}
.lead {
  font-size: 20px;
  line-height: 1.5;
  color: var(--muted);
  max-width: 600px;
}

/* Each section starts below a hairline, with room around it, so the page
   reads as a sequence of short chapters. */
section {
  padding-top: 40px;
  margin-top: 48px;
  border-top: 1px solid var(--line);
}
section > p:first-of-type {
  color: var(--muted);
}

.hero img {
  display: block;
  width: 72px;
  height: 72px;
  margin-bottom: 24px;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}
.button {
  display: inline-flex;
  align-items: center;
  height: 42px;
  padding: 0 18px;
  border-radius: 21px;
  background: var(--line);
  color: var(--fg);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}
.button:hover {
  text-decoration: none;
  opacity: 0.85;
}
.button.primary {
  background: var(--fg);
  color: var(--bg);
}
.note {
  margin-top: 12px;
  font-size: 14px;
  color: var(--muted);
}

/* A list of points: a short name, then a sentence. Two columns when there's
   room, one on a phone. */
.points {
  margin: 24px 0 0;
}
.points > div {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 4px 24px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.points > div:last-child {
  border-bottom: 0;
}
.points dt {
  color: var(--fg);
  font-weight: 600;
}
.points dd {
  margin: 0;
}
@media (max-width: 600px) {
  .points > div {
    grid-template-columns: 1fr;
  }
}

/* FAQ: native disclosure, one question per row. */
details {
  border-bottom: 1px solid var(--line);
}
details:first-of-type {
  border-top: 1px solid var(--line);
}
summary {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  color: var(--fg);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}
summary::-webkit-details-marker {
  display: none;
}
summary::after {
  content: '+';
  color: var(--muted);
  font-weight: 400;
}
details[open] summary::after {
  content: '−';
}
details p {
  margin: -4px 0 18px;
}

/* Compare: the row names stay visible while the table scrolls sideways. */
.table {
  overflow-x: auto;
  margin: 32px -16px 0;
  padding: 0 16px;
}
table {
  border-collapse: collapse;
  font-size: 15px;
  min-width: 640px;
}
th,
td {
  text-align: left;
  vertical-align: top;
  padding: 12px 12px 12px 0;
  border-bottom: 1px solid var(--line);
}
thead th {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}
tbody th {
  position: sticky;
  left: 0;
  background: var(--bg);
  color: var(--fg);
  font-weight: 600;
  width: 180px;
}
td.yes,
thead th.yes {
  color: var(--fg);
}
/* On a phone each row becomes a short block: the question, then one line
   per alternative. */
@media (max-width: 600px) {
  .table {
    margin: 32px 0 0;
    padding: 0;
  }
  table,
  tbody,
  tr,
  th,
  td {
    display: block;
    min-width: 0;
    width: auto;
  }
  thead {
    display: none;
  }
  tbody tr {
    padding: 16px 0;
    border-bottom: 1px solid var(--line);
  }
  tbody th {
    position: static;
    padding: 0 0 6px;
    border: 0;
  }
  td {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 12px;
    padding: 4px 0;
    border: 0;
  }
  td::before {
    content: attr(data-label);
    color: var(--muted);
    font-size: 13px;
  }
  td.yes::before {
    color: var(--bell);
    font-weight: 600;
  }
}

footer.site {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  font-size: 14px;
  color: var(--muted);
}
footer.site .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}
footer.site span {
  margin-right: auto;
}
@media (max-width: 600px) {
  footer.site span {
    flex-basis: 100%;
  }
  header.site .wrap {
    gap: 14px;
  }
  header.site .brand span {
    display: none;
  }
  header.site nav {
    gap: 14px;
  }
}
footer.site a {
  color: var(--muted);
}

/* The privacy policy and setup guide are Markdown: give their headings
   the section rhythm too. */
.prose h2 {
  margin-top: 48px;
}