:root {
  --bg: #f3f0e8;
  --bg-elev: #fffcf7;
  --ink: #1c1915;
  --muted: #5e584e;
  --faint: #8a8174;
  --line: #e3dcd0;
  --accent: #0e5c56;
  --accent-ink: #084743;
  --accent-soft: #e5f3f1;
  --warn: #8a4510;
  --warn-bg: #fbf1e4;
  --info-bg: #eef3f8;
  --info: #1d4e72;
  --shadow: 0 18px 40px rgba(48, 38, 22, 0.06);
  --serif: "Fraunces", "Iowan Old Style", Palatino, serif;
  --sans: "Source Sans 3", "Segoe UI", sans-serif;
  --mono: "ui-monospace", "Cascadia Mono", "Segoe UI Mono", monospace;
  --header: 4.25rem;
  --measure: 42rem;
  --wide: 72rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.75;
  background:
    radial-gradient(900px 420px at 0% -10%, rgba(14, 92, 86, 0.08), transparent 55%),
    radial-gradient(700px 380px at 100% 0%, rgba(176, 122, 62, 0.1), transparent 50%),
    var(--bg);
}
img { max-width: 100%; }
a { color: var(--accent-ink); }
a:hover { color: var(--accent); }
:focus-visible {
  outline: 3px solid #c9862a;
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--ink);
  color: white;
  padding: 0.5rem 0.8rem;
  z-index: 20;
}
.skip:focus { top: 0.6rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(243, 240, 232, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.brand-mark {
  width: 2rem;
  height: 2rem;
  border-radius: 0.55rem;
  background:
    radial-gradient(circle at 70% 30%, transparent 0 18%, #f4e2c4 19% 100%),
    linear-gradient(145deg, #14756d, #0b3f3b);
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.2);
  flex: none;
}
.brand small {
  display: block;
  font-weight: 500;
  color: var(--faint);
  letter-spacing: 0;
  font-size: 0.75rem;
}
.nav-toggle {
  margin-left: auto;
  border: 1px solid var(--line);
  background: var(--bg-elev);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  font: inherit;
  cursor: pointer;
}
.site-nav {
  display: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--line);
  padding: 0.5rem 1.25rem 1rem;
}
.site-nav.is-open { display: block; }
.site-nav a {
  display: block;
  text-decoration: none;
  padding: 0.45rem 0;
  color: var(--ink);
}
.site-nav a[aria-current="page"] {
  color: var(--accent);
  font-weight: 700;
}
.nav-drop { margin-top: 0.35rem; border-top: 1px solid var(--line); padding-top: 0.35rem; }
.nav-drop summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  padding: 0.45rem 0;
}
.nav-drop summary::-webkit-details-marker { display: none; }
.nav-drop-panel a { padding-left: 0.15rem; }

@media (min-width: 960px) {
  .nav-toggle { display: none; }
  .site-nav {
    display: flex;
    position: static;
    background: transparent;
    border: 0;
    padding: 0;
    margin-left: auto;
    align-items: center;
    gap: 0.2rem 1.05rem;
  }
  .site-nav a { padding: 0.2rem 0; }
  .nav-drop {
    position: relative;
    margin: 0;
    border: 0;
    padding: 0;
  }
  .nav-drop summary { padding: 0.2rem 0; }
  .nav-drop-panel {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 0.55rem);
    min-width: 12rem;
    padding: 0.35rem;
    background: var(--bg-elev);
    border: 1px solid var(--line);
    border-radius: 0.8rem;
    box-shadow: var(--shadow);
    z-index: 20;
  }
  .nav-drop[open] .nav-drop-panel { display: block; }
  .nav-drop-panel a {
    padding: 0.35rem 0.7rem;
    border-radius: 0.45rem;
  }
  .nav-drop-panel a:hover { background: var(--accent-soft); }
}

.wrap {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}
.hero {
  display: grid;
  gap: 1.5rem;
  padding: 1.5rem 0 0.5rem;
}
.kicker {
  margin: 0 0 0.6rem;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.86rem;
  letter-spacing: 0.04em;
}
h1, h2, h3 { line-height: 1.35; letter-spacing: -0.03em; }
h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.35rem);
  font-weight: 700;
}
.lede {
  max-width: 40rem;
  color: var(--muted);
  font-size: 1.12rem;
}
.trust {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}
.trust li {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.92rem;
}
.cover {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  box-shadow: var(--shadow);
  padding: 1.25rem;
}
.cover ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.35rem;
}
.cover a {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--ink);
  padding: 0.55rem 0.3rem;
  border-radius: 0.6rem;
}
.cover a:hover { background: var(--accent-soft); }
.cover .num {
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  font-weight: 700;
}
.cover small { display: block; color: var(--muted); font-size: 0.86rem; }

.section { margin-top: 3rem; }
.section h2 {
  font-family: var(--serif);
  font-size: 1.7rem;
  margin: 0 0 0.8rem;
}
.grid {
  display: grid;
  gap: 0.9rem;
}
.card {
  display: block;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1rem 1.05rem 1.05rem;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
}
a.card:hover { border-color: #b7ddd8; }
.card h3 { margin: 0.2rem 0 0.35rem; font-size: 1.15rem; }
.card p { margin: 0; color: var(--muted); }
.mono {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--accent);
  font-weight: 700;
}
.facts {
  display: grid;
  gap: 0.9rem;
}
.fact {
  background: var(--bg-elev);
  border-left: 4px solid var(--accent);
  border-radius: 0 0.9rem 0.9rem 0;
  padding: 0.9rem 1rem;
}
.fact h3 { margin: 0 0 0.3rem; font-size: 1.05rem; }
.fact p { margin: 0; color: var(--muted); }

@media (min-width: 800px) {
  .hero { grid-template-columns: 1.3fr 0.9fr; align-items: end; }
  .grid.browsers { grid-template-columns: repeat(3, 1fr); }
  .facts { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1.2fr 0.8fr; }
}

.prose { max-width: var(--measure); }
.prose h2 { margin-top: 2.2rem; }
.prose h3 { margin-top: 1.4rem; font-size: 1.12rem; }
.crumbs {
  color: var(--faint);
  font-size: 0.92rem;
  margin-bottom: 0.8rem;
}
.crumbs a { color: inherit; }
.meta-line { color: var(--faint); font-size: 0.92rem; }

.note {
  border-radius: 0.9rem;
  padding: 0.9rem 1rem;
  margin: 1rem 0;
}
.note p:last-child { margin-bottom: 0; }
.note-title { margin: 0 0 0.25rem; font-weight: 700; }
.note-caution { background: var(--warn-bg); color: #5d3814; }
.note-info { background: var(--info-bg); color: #17384f; }
.note-plain { background: var(--accent-soft); color: var(--accent-ink); }

.steps {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  counter-reset: step;
}
.steps > li {
  position: relative;
  padding: 0 0 1.15rem 3.1rem;
  border-left: 1px solid var(--line);
  margin-left: 0.85rem;
}
.steps > li:last-child { border-left-color: transparent; }
.steps > li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: -0.85rem;
  top: 0;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--accent);
  color: white;
  font-size: 0.85rem;
  font-weight: 700;
  display: grid;
  place-items: center;
}
.steps h3 { margin: 0 0 0.25rem; font-size: 1.05rem; }
.steps p { margin: 0.2rem 0; }
kbd, code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: #efeae1;
  border-radius: 0.35rem;
  padding: 0.05rem 0.35rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-elev);
  border-radius: 0.8rem;
  overflow: hidden;
  font-size: 0.98rem;
}
th, td {
  text-align: left;
  padding: 0.7rem 0.8rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th { background: #f6f1e7; font-weight: 700; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 0.8rem; }

.faq details {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  padding: 0.8rem 1rem;
  margin: 0.6rem 0;
}
.faq summary { cursor: pointer; font-weight: 700; }
.faq details p { margin: 0.55rem 0 0.2rem; color: var(--muted); }

.site-footer {
  border-top: 1px solid var(--line);
  background: #ebe6dc;
}
.footer-inner {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2rem;
  display: grid;
  gap: 1rem;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
}
.footer-links a { color: var(--ink); }
.fine { color: var(--muted); font-size: 0.92rem; margin: 0; }
.related {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  list-style: none;
}
.related a {
  display: inline-block;
  text-decoration: none;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
  color: var(--ink);
}

@media print {
  .site-header, .site-footer, .nav-toggle, .related { display: none; }
  body { background: white; }
  a { text-decoration: none; }
}