/* Groupify website: one reading column, Chrome tab-group colours as accents. No external resources (see _headers). */
:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --fg: #1d232b;
  --muted: #5b6573;
  --line: #e1e5ea;
  --accent: #1a73e8;
  --accent-soft: #e8f0fe;
  --code-bg: #eef1f5;
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'PingFang HK', 'Microsoft JhengHei', 'Noto Sans', sans-serif;
  --mono: ui-monospace, 'SFMono-Regular', Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11151a;
    --surface: #181d24;
    --fg: #e6e9ee;
    --muted: #9aa4b2;
    --line: #2a313b;
    --accent: #8ab4f8;
    --accent-soft: #1c2a40;
    --code-bg: #20262f;
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
}
img {
  max-width: 100%;
  height: auto;
}
a {
  color: var(--accent);
  text-underline-offset: 2px;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
[id] {
  scroll-margin-top: 5rem;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding-inline: 20px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
}
.brand img {
  border-radius: 6px;
}
@media (prefers-color-scheme: dark) {
  .brand img {
    background: #fff;
    padding: 2px;
  }
}
.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 999px;
}
.nav a:hover,
.nav a[aria-current='page'] {
  color: var(--fg);
  background: var(--surface);
}
.nav a.btn,
.nav a.btn:hover {
  color: #fff;
  background: var(--accent);
}
@media (prefers-color-scheme: dark) {
  .nav a.btn,
  .nav a.btn:hover {
    color: #11151a;
  }
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
}
@media (prefers-color-scheme: dark) {
  .btn {
    color: #11151a;
  }
}
.btn.small {
  padding: 6px 14px;
  font-size: 14px;
}

main {
  padding-block: 48px 72px;
}
h1 {
  font-size: clamp(30px, 6vw, 42px);
  line-height: 1.2;
  margin: 0 0 12px;
  text-wrap: balance;
  letter-spacing: -0.01em;
}
h2 {
  font-size: 21px;
  line-height: 1.35;
  margin: 44px 0 10px;
  text-wrap: balance;
}
h3 {
  font-size: 16px;
  margin: 28px 0 6px;
}
p,
ul {
  margin: 12px 0;
}
ul {
  padding-left: 1.3em;
}
li + li {
  margin-top: 6px;
}
.eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 6px;
}
.meta {
  font-size: 14px;
  color: var(--muted);
}
.lede {
  font-size: 18px;
  color: var(--muted);
  max-width: 60ch;
}
code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 1px 6px;
  border-radius: 4px;
}

.summary {
  margin-top: 28px;
  padding: 6px 22px;
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  border-radius: 14px;
}
.summary h2 {
  margin-top: 16px;
}

.table-wrap {
  overflow-x: auto;
  margin: 14px 0;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
th,
td {
  text-align: left;
  vertical-align: top;
  padding: 10px 12px 10px 0;
  border-bottom: 1px solid var(--line);
}
th {
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
}

.hero {
  display: grid;
  gap: 28px;
  align-items: center;
  grid-template-columns: 1fr;
}
@media (min-width: 720px) {
  .hero {
    grid-template-columns: 1.2fr 1fr;
  }
}
.hero img {
  border-radius: 14px;
  border: 1px solid var(--line);
  box-shadow: 0 12px 40px rgb(0 0 0 / 0.12);
  max-width: 320px;
  justify-self: center;
}
.features {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
  margin-top: 36px;
  padding: 0;
  list-style: none;
}
.features li {
  margin: 0;
  padding: 16px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: inset 4px 0 0 var(--strip, var(--accent));
}
@media (min-width: 600px) {
  .features {
    grid-template-columns: repeat(2, 1fr);
  }
}
.features .strip-blue {
  --strip: #1a73e8;
}
.features .strip-orange {
  --strip: #e8710a;
}
.features .strip-green {
  --strip: #1e8e3e;
}
.features .strip-purple {
  --strip: #9334e6;
}
.features b {
  display: block;
}
.features span {
  color: var(--muted);
  font-size: 15px;
}

.site-footer {
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 22px;
}
.site-footer a {
  color: inherit;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}