/* ADR-0003 */
:root {
  color-scheme:light;
  --paper:#f8f9fc;
  --ink:#171a22;
  --muted:#565d70;
  --blue:#234ce9;
  --line:#d6dae4;
  --soft:#eef1f8;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  color:var(--ink);
  background:var(--paper);
  font-synthesis:none
}
* {
  box-sizing:border-box
}
body {
  margin:0;
  font-size:1rem;
  line-height:1.85
}
a {
  color:inherit;
  text-underline-offset:.3em
}
a:hover {
  color:var(--blue)
}
a:focus-visible {
  outline:3px solid var(--blue);
  outline-offset:6px
}
p,h1,h2,h3 {
  margin:0
}
svg {
  display:block
}
.wrap {
  width:min(100% - 112px,1200px);
  margin-inline:auto
}
.skip-link {
  position:absolute;
  top:-100px;
  left:24px;
  z-index:10;
  padding:10px 20px;
  background:var(--ink);
  color:white
}
.skip-link:focus {
  top:12px;
  color:white
}
.header {
  min-height:116px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  border-bottom:1px solid var(--line)
}
.brand {
  display:flex;
  align-items:center;
  gap:14px;
  text-decoration:none;
  font-weight:800;
  font-size:1.65rem;
  line-height:1.1;
  letter-spacing:-.035em
}
.brand svg {
  color:var(--blue);
  width:36px;
  height:36px
}
.brand-name {
  display:block;
  font-size:.75rem;
  letter-spacing:0;
  font-weight:500;
  margin-top:7px
}
.header nav {
  display:flex;
  gap:32px;
  flex-wrap:wrap
}
.header nav a {
  display:flex;
  align-items:center;
  min-height:44px;
  font-size:.875rem;
  text-decoration:none;
  font-weight:600
}
.hero {
  padding-top:64px
}
.eyebrow {
  font-size:.8125rem;
  letter-spacing:.12em;
  font-weight:650
}
.hero h1 {
  margin:28px 0 32px;
  font-size:clamp(2.15rem,5.6vw,5rem);
  font-weight:750;
  letter-spacing:-.055em;
  line-height:1.4
}
.hero h1 span {
  display:block
}
.hero-bottom {
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px
}
.hero-bottom p {
  color:var(--muted)
}
.text-link {
  display:inline-flex;
  align-items:center;
  gap:40px;
  text-decoration:none;
  font-weight:600;
  min-height:44px;
  border-bottom:1px solid var(--ink)
}
.text-link span {
  color:var(--blue)
}
.zigzag {
  margin-top:38px;
  height:155px;
  overflow:hidden
}
.zigzag svg {
  width:100%;
  height:100%
}
.zigzag path {
  fill:none;
  stroke:var(--blue);
  stroke-width:2.3;
  vector-effect:non-scaling-stroke
}
.hero-caption {
  display:flex;
  justify-content:space-between;
  gap:16px;
  font-size:.75rem;
  letter-spacing:.075em;
  color:var(--muted);
  padding:16px 0 36px
}
.section {
  display:grid;
  grid-template-columns:1fr 1.45fr;
  gap:60px;
  padding-block:76px;
  border-top:1px solid var(--line);
  scroll-margin-top:24px
}
.section-label {
  display:grid;
  grid-template-columns:45px 1fr;
  align-content:start;
  align-items:baseline;
  gap:0 18px
}
.number {
  color:var(--blue);
  font-family:ui-monospace,monospace;
  font-size:.875rem
}
.section-label h2 {
  font-size:2.1rem;
  letter-spacing:-.035em;
  font-weight:600;
  line-height:1.4
}
.section-label>span:last-child {
  grid-column:2;
  color:var(--muted);
  font-size:.875rem;
  margin-top:8px
}
.section-content h3 {
  font-size:clamp(1.35rem,2.5vw,2rem);
  font-weight:650;
  letter-spacing:-.035em;
  line-height:1.65;
  margin-bottom:24px
}
.section-content p {
  max-width:34em;
  color:var(--muted)
}
.section-content p+p {
  margin-top:16px
}
.section-content .principles {
  margin-top:32px;
  color:var(--ink);
  font-weight:600
}
.principles span {
  padding-inline:16px;
  color:var(--blue)
}
.status {
  display:inline-block;
  background:var(--soft);
  color:var(--muted);
  font-size:.875rem;
  padding:2px 12px;
  margin-bottom:18px
}
.empty-state h3 {
  margin-bottom:12px
}
.github-section {
  margin-top:12px;
  background:var(--ink);
  color:#fff;
  scroll-margin-top:0
}
.github-inner {
  padding-block:64px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:32px
}
.github-inner .eyebrow {
  color:#b7c1e2
}
.github-inner h2 {
  font-size:clamp(2.5rem,5vw,4rem);
  letter-spacing:-.04em;
  font-weight:550;
  line-height:1.4;
  margin:8px 0 16px
}
.github-inner p:not(.eyebrow) {
  color:#d6dae4
}
.github-pending {
  border:1px solid #6a7182;
  padding:14px 24px;
  font-size:.875rem
}
.github-inner a {
  color:#fff
}
.github-inner a:focus-visible {
  outline-color:#b7c1ff
}
.footer {
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:16px 28px;
  padding-block:32px;
  font-size:.8125rem;
  color:var(--muted)
}
.footer a {
  display:inline-flex;
  align-items:center;
  min-height:44px;
  text-decoration:none
}
.footer-name {
  color:var(--ink);
  font-weight:650
}
.error-page {
  min-height:100vh;
  display:flex;
  flex-direction:column
}
.error-main {
  flex:1;
  padding-block:80px
}
.error-main h1 {
  font-size:clamp(2rem,6vw,4.5rem);
  letter-spacing:-.045em;
  line-height:1.4;
  margin:20px 0 24px
}
.error-main p {
  margin-bottom:32px
}
.error-code {
  color:var(--blue);
  font-family:ui-monospace,monospace;
  font-size:1.1rem
}
/* Two rows keep navigation visible without a scripted menu. */
@media(max-width:760px) {
  .wrap {
    width:calc(100% - 48px)
  }
  .header {
    align-items:flex-start;
    flex-direction:column;
    gap:18px;
    padding-block:22px
  }
  .header nav {
    width:100%;
    justify-content:space-between;
    gap:12px
  }
  .hero {
    padding-top:44px
  }
  .hero h1 {
    font-size:clamp(1.75rem,6.3vw,3rem);
    margin:24px 0
  }
  .hero-bottom {
    align-items:flex-start;
    flex-direction:column;
    gap:22px
  }
  .hero-bottom p {
    font-size:1rem
  }
  .zigzag {
    height:105px;
    margin-top:32px
  }
  .hero-caption {
    font-size:.75rem;
    padding-bottom:28px
  }
  .hero-caption span:last-child {
    display:none
  }
  .section {
    grid-template-columns:1fr;
    gap:30px;
    padding-block:44px
  }
  .section-label {
    grid-template-columns:32px 1fr;
    gap:0 12px
  }
  .section-label h2 {
    font-size:1.75rem
  }
  .section-content h3 {
    font-size:1.4rem
  }
  .github-inner {
    flex-direction:column;
    align-items:flex-start;
    padding-block:44px;
    gap:24px
  }
  .footer {
    align-items:flex-start;
    flex-direction:column;
    gap:6px;
    padding-block:24px
  }
  .error-main {
    padding-block:56px
  }
}
/* Long words and enlarged text must wrap instead of widening the page. */
@media(max-width:360px) {
  .wrap {
    width:calc(100% - 32px)
  }
  .header nav {
    gap:8px
  }
  .hero h1 {
    letter-spacing:-.065em
  }
  .section-content h3 {
    font-size:1.25rem
  }
  .principles span {
    padding-inline:10px
  }
}
h1,h2,h3,p,a {
  overflow-wrap:anywhere
}
@media(prefers-reduced-motion:reduce) {
  *,*::before,*::after {
    scroll-behavior:auto!important;
    animation:none!important;
    transition:none!important
  }
}