:root { color-scheme: dark; --ink: #f4f1e9; --muted: #b9c3cb; --paper: #101e2a; --surface: #172734; --line: #42515c; --accent: #d6eb76; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; color: var(--ink); background: var(--paper); line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-underline-offset: .25em; }
a:hover { color: var(--accent); }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 6px; }
::selection { background: var(--accent); color: var(--paper); }
.skip { position: absolute; z-index: 5; left: 1rem; top: -10rem; padding: .6rem; background: var(--paper); }
.skip:focus { top: 1rem; }
.wrap { width: min(1240px, calc(100% - 96px)); margin: auto; }
header { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 96px; border-bottom: 1px solid var(--line); }
.wordmark { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-size: 1.25rem; font-weight: 650; letter-spacing: -.035em; }
.wordmark img { width: 40px; height: 40px; border-radius: 8px; }
nav { display: flex; gap: 28px; font-size: .9rem; }
nav a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; }
.hero { padding: clamp(64px, 8vw, 112px) 0 88px; }
.eyebrow { font-size: .8rem; letter-spacing: .035em; color: var(--accent); font-weight: 600; margin: 0 0 24px; }
h1, h2, h3 { font-weight: 500; }
h1 { max-width: 1100px; font-size: clamp(3.25rem, 9.5vw, 9rem); line-height: .99; letter-spacing: -.065em; margin: 0 0 42px; }
.hero-bottom { display: flex; align-items: flex-end; justify-content: space-between; gap: 48px; }
.hero-bottom p { max-width: 550px; margin: 0; color: var(--muted); font-size: clamp(1.05rem, 1.7vw, 1.25rem); }
.actions { display: flex; flex-direction: column; align-items: flex-start; flex-shrink: 0; gap: 20px; }
.button { display: inline-flex; align-items: center; gap: 36px; min-height: 52px; background: var(--accent); color: var(--paper); font-weight: 650; padding: 12px 22px; text-decoration: none; border-radius: 4px; transition: background .2s, transform .2s; }
.button:hover { background: var(--ink); color: var(--paper); transform: translateY(-2px); }
.text-link { display: inline-flex; gap: 16px; align-items: center; min-height: 44px; font-size: .95rem; }
.overview { display: grid; grid-template-columns: 1.1fr 1fr; gap: 12%; padding: 64px 0; border-block: 1px solid var(--line); }
h2 { font-size: clamp(2rem, 3.6vw, 3.5rem); line-height: 1.12; letter-spacing: -.04em; margin: 0 0 24px; }
.overview h2 { font-size: clamp(1.8rem, 2.8vw, 2.6rem); }
.overview p, .closing p, .check-copy p { max-width: 560px; color: var(--muted); }
.workflow { list-style: none; counter-reset: workflow; margin: 0; padding: 0; display: grid; gap: 26px; }
.workflow li { counter-increment: workflow; position: relative; padding-left: 42px; }
.workflow li::before { content: counter(workflow, decimal-leading-zero); position: absolute; left: 0; top: 3px; color: var(--accent); font-size: .8rem; }
.workflow strong, .workflow span { display: block; }
.workflow strong { font-weight: 550; margin-bottom: 4px; }
.workflow span { color: var(--muted); font-size: .94rem; }
.section { padding-block: clamp(72px, 9vw, 128px); }
.section-heading { max-width: 650px; margin-bottom: 64px; }
.section-heading > p:last-child { max-width: 500px; color: var(--muted); }
.skill-groups { display: grid; gap: 64px; }
.skill-group { display: grid; grid-template-columns: 1fr 1.5fr; gap: 12%; }
.group-heading h3 { font-size: 1.5rem; letter-spacing: -.035em; margin: 12px 0; }
.group-heading p { max-width: 270px; color: var(--muted); font-size: .95rem; }
details { border-bottom: 1px solid var(--line); }
summary { display: flex; align-items: center; justify-content: space-between; gap: 24px; cursor: pointer; list-style: none; padding: 20px 0; }
summary::-webkit-details-marker { display: none; }
summary code { color: var(--accent); font-size: .78rem; }
summary strong { display: block; font-weight: 500; font-size: 1.08rem; margin-top: 4px; }
.expand { font-size: 1.65rem; font-weight: 300; transition: transform .2s; }
details[open] .expand { transform: rotate(45deg); }
details > p { margin: 0 38px 24px 0; color: var(--muted); font-size: .95rem; }
.note { color: var(--muted); font-size: .88rem; }
.availability { margin-top: 52px; }
.check-section { border-block: 1px solid var(--line); display: grid; grid-template-columns: 1fr 1fr; gap: 12%; align-items: center; }
.check-copy .note { margin-top: 28px; }
.contrast-example { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; margin: 0; padding: clamp(24px, 3vw, 40px); }
.contrast-example figcaption { font-size: .9rem; }
.type-sample { background: #fff; color: #777; text-align: center; font-size: 4.5rem; letter-spacing: -.06em; padding: 12px; margin: 28px 0 12px; border-radius: 4px; }
.color-values { display: flex; justify-content: center; align-items: center; gap: 12px; font-size: .8rem; color: var(--muted); }
.contrast-result { display: flex; justify-content: space-between; align-items: baseline; margin-top: 28px; }
.contrast-result strong { font-size: 2.6rem; letter-spacing: -.05em; font-weight: 500; }
.contrast-result span, .contrast-example dl { font-size: .85rem; }
.contrast-example dl { margin-block: 12px 0; }
.contrast-example dl > div { display: flex; justify-content: space-between; gap: 12px; padding-block: 10px; border-top: 1px solid var(--line); }
.contrast-example dd { margin: 0; text-align: right; color: var(--accent); }
.contrast-example > p { color: var(--muted); font-size: .76rem; line-height: 1.55; margin: 20px 0 0; }
.closing { display: grid; grid-template-columns: 1.2fr 1fr; gap: 16%; align-items: center; }
.closing aside { border-left: 1px solid var(--line); padding-left: 40px; }
.closing h3 { font-size: 1.4rem; line-height: 1.3; margin: 0; }
code { font-family: ui-monospace, "SFMono-Regular", Consolas, monospace; overflow-wrap: anywhere; }
.prose { max-width: 760px; padding-block: 64px; }
.prose h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); }
.prose h2 { font-size: 1.5rem; margin-top: 2em; line-height: 1.3; }
.prose a { overflow-wrap: anywhere; }
footer { padding-block: 28px 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: .88rem; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
footer > a { max-width: 280px; }
@media (prefers-reduced-motion: no-preference) {
  @keyframes enter { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
  .hero h1, .hero-bottom { animation: enter .65s ease-out both; }
  .hero-bottom { animation-delay: .1s; }
}
@media (max-width: 800px) {
  .wrap { width: calc(100% - 48px); }
  .hero-bottom { align-items: flex-start; flex-direction: column; gap: 28px; }
  .actions { flex-direction: row; align-items: center; gap: 24px; }
  .overview, .check-section { grid-template-columns: 1fr; gap: 40px; }
  .skill-group { gap: 8%; grid-template-columns: 1fr 1.5fr; }
  .closing { gap: 8%; }
}
@media (max-width: 540px) {
  .wrap { width: calc(100% - 40px); }
  header { min-height: 80px; gap: 12px; }
  .wordmark { gap: 8px; font-size: 1.05rem; }
  .wordmark img { width: 32px; height: 32px; }
  nav { gap: 16px; font-size: .85rem; }
  .hero { padding-block: 56px 64px; }
  h1 { font-size: clamp(3rem, 13.5vw, 4.4rem); margin-bottom: 28px; }
  .actions { align-items: flex-start; flex-direction: column; gap: 8px; }
  .eyebrow { font-size: .74rem; }
  .overview { padding-block: 48px; }
  .section { padding-block: 64px; }
  .section-heading { margin-bottom: 40px; }
  .skill-group, .closing { grid-template-columns: 1fr; gap: 20px; }
  .skill-groups { gap: 44px; }
  .group-heading p { max-width: none; }
  .closing aside { border-left: 0; border-top: 1px solid var(--line); padding: 28px 0 0; margin-top: 20px; }
  footer { gap: 16px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }