:root { --paper: #f5f7f1; --ink: #10242b; --soft: #405258; --teal: #0b5d55; --line: #c9d2ca; --mint: #d5e9dc; }
* { box-sizing: border-box; }
html { scroll-padding-top: 1.5rem; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 1rem/1.6 Inter, ui-sans-serif, system-ui, sans-serif; }
a { color: var(--teal); text-underline-offset: .2em; }
a, summary { touch-action: manipulation; }
:focus-visible { outline: 3px solid var(--teal); outline-offset: 4px; }
.skip { position: absolute; left: 1rem; top: -6rem; background: var(--ink); color: white; padding: .7rem 1rem; z-index: 10; }
.skip:focus { top: 1rem; }
header { display: flex; justify-content: space-between; gap: 1rem; align-items: center; min-height: 5rem; padding: 1rem max(1.25rem, calc((100% - 1160px) / 2)); border-bottom: 1px solid var(--line); }
.brand { color: var(--ink); text-decoration: none; font-weight: 750; }
.brand > span:first-child { color: var(--teal); font-size: 1.7rem; vertical-align: middle; }
.brand-label { color: var(--soft); font-weight: 400; }
header nav { display: flex; gap: 1.5rem; font-size: .9rem; }
main, footer { width: min(1160px, calc(100% - 2.5rem)); margin: auto; }
main:focus { outline: none; }
.intro { padding: 3.6rem 0 1rem; }
.eyebrow { font-weight: 750; text-transform: uppercase; letter-spacing: .1em; font-size: .72rem; margin: 0 0 .8rem; }
h1 { max-width: 930px; font-size: clamp(2.7rem, 6vw, 4.6rem); line-height: 1.08; letter-spacing: -.05em; margin: 0; overflow-wrap: anywhere; }
h2 { font-size: 2rem; line-height: 1.2; letter-spacing: -.035em; margin: .7rem 0 1rem; }
h3 { font-size: 1.05rem; margin: 1.7rem 0 .7rem; }
h4 { font-size: .9rem; margin: 1.3rem 0 .5rem; }
.lede { font-size: 1.18rem; color: var(--soft); max-width: 780px; }
.badge { display: inline-block; padding: .2rem .6rem; background: #eaf2e9; border: 1px solid #a9c4b4; border-radius: 4px; font-size: .75rem; font-weight: 650; }
.facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.2rem; margin: 1.5rem 0; }
.intro > .facts { grid-template-columns: 1.2fr .6fr 1.6fr .6fr; padding: 1.5rem 0; border-block: 1px solid var(--line); }
.facts dt { font-size: .75rem; color: var(--soft); }
.facts dd { font-size: .9rem; font-weight: 600; margin: .3rem 0 0; overflow-wrap: anywhere; }
.actions { display: flex; gap: .8rem 1.4rem; flex-wrap: wrap; align-items: center; font-size: .9rem; }
.actions a { padding: .4rem 0; }
.downloads { margin: 1.7rem 0; }
.download-note { margin-top: -.8rem; max-width: 700px; font-size: .78rem; }
.actions .button { display: inline-block; padding: .7rem 1rem; border-radius: .4rem; background: var(--ink); color: white; text-decoration: none; }
.feature-nav { display: flex; gap: .7rem; flex-wrap: wrap; padding: 1rem 0 1.5rem; }
.feature-nav a { text-decoration: none; padding: .4rem .8rem; border: 1px solid var(--line); background: #e8eee5; border-radius: 2rem; font-size: .85rem; }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 285px; gap: 3rem; }
.feature { padding: 2rem 0; border-top: 1px solid var(--line); }
.notice { padding: .9rem 1.1rem; border-left: 3px solid var(--teal); background: var(--mint); font-size: .9rem; }
details { border-top: 1px solid var(--line); margin: 1rem 0; overflow-wrap: anywhere; }
summary { cursor: pointer; padding: .9rem 0; color: var(--teal); font-size: .95rem; font-weight: 650; }
details[open] > summary { margin-bottom: .4rem; }
.decision { background: white; border: 1px solid var(--line); border-radius: .5rem; padding: 0 1rem; }
.decision[open] { padding-bottom: .7rem; }
.decision p, .decision li, .evidence li { font-size: .9rem; }
.contribute { margin-top: 1.5rem; }
.contribute p { font-size: .85rem; color: var(--soft); }
aside { align-self: start; margin: 2rem 0; padding: 1.4rem; background: #e8eee5; border-radius: .6rem; }
aside h2 { font-size: 1.35rem; }
aside p, aside li { font-size: .85rem; }
.section { margin-top: 2rem; padding: 2rem 0; border-top: 1px solid var(--line); }
.section > p { max-width: 800px; color: var(--soft); }
.record { background: white; border: 1px solid var(--line); padding: 0 1.2rem; border-radius: .5rem; scroll-margin-top: 1rem; }
.record:target { border-color: var(--teal); outline: 2px solid var(--teal); outline-offset: 2px; }
.record > summary { font-size: 1rem; }
.record[open] { padding-bottom: .8rem; }
.record p, .record li { font-size: .9rem; }
.comparison-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.4rem; }
.comparison { border: 1px solid var(--line); padding: 1rem; border-radius: .4rem; }
.comparison h4 { margin-top: 0; }
.meta { display: block; font-size: .78rem !important; color: var(--soft); overflow-wrap: anywhere; }
.muted { color: var(--soft); font-size: .85rem; }
ul, ol { padding-left: 1.3rem; }
li + li { margin-top: .6rem; }
p, li, small { overflow-wrap: anywhere; }
code, pre { font-family: "SFMono-Regular", Consolas, monospace; font-size: .78rem; }
code { overflow-wrap: anywhere; }
pre { white-space: pre-wrap; overflow-wrap: anywhere; background: #f0f3ed; padding: 1rem; border-radius: .4rem; }
.credits { padding-left: 0; list-style: none; }
.credits li { padding: .8rem 0; border-top: 1px solid var(--line); }
.credits small { font-size: .75rem; }
footer { padding: 2rem 0 3rem; border-top: 1px solid var(--line); font-size: .8rem; color: var(--soft); }
@media (max-width: 850px) {
  .layout { grid-template-columns: 1fr; gap: 0; }
  aside { margin-top: 0; }
  .intro > .facts { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 540px) {
  header { flex-wrap: wrap; gap: .5rem; padding: .8rem 1.25rem; }
  header nav { gap: 1.2rem; font-size: .8rem; }
  .brand-label { display: none; }
  .intro { padding-top: 2.5rem; }
  .comparison-grid { grid-template-columns: 1fr; }
  .facts { grid-template-columns: 1fr; }
  .record { padding-inline: .9rem; }
  h2 { font-size: 1.8rem; }
}
@media print {
  header, .downloads, .feature-nav, .contribute { display: none; }
  body { background: white; }
  main, footer { width: 100%; }
  .layout { display: block; }
  .feature, .record { break-inside: avoid; }
}