:root {
  color-scheme: dark;
  --ink: #171024;
  --paper: #f0eef6;
  --lavender: #c6b5f4;
  --accent: #d5ff59;
  --line: #493d60;
  font: 16px/1.5 system-ui, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; color: var(--paper); background: var(--ink); }
a { color: inherit; }
img { display: block; max-width: 100%; }
a:focus-visible, summary:focus-visible { outline: 3px solid #aa78ff; outline-offset: 4px; }
.wrap { width: min(1320px, 100% - clamp(2rem, 9vw, 10rem)); margin-inline: auto; }
.skip { position: absolute; top: .5rem; left: .5rem; z-index: 5; padding: .7rem 1rem; background: var(--accent); color: var(--ink); transform: translateY(-160%); }
.skip:focus { transform: none; }
.masthead { border-bottom: 1px solid var(--line); }
.header-inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .65rem; font-weight: 830; font-size: 1.3rem; text-decoration: none; letter-spacing: -.055em; }
.brand-period { color: var(--accent); }
details summary { list-style: none; cursor: pointer; }
details summary::-webkit-details-marker { display: none; }
.language { position: relative; z-index: 1; }
.language summary { display: flex; align-items: center; gap: .65rem; min-height: 42px; padding: .45rem .8rem; border: 1px solid var(--line); border-radius: 5px; }
.language svg { width: 1.15rem; height: 1.15rem; }
.chevron { width: .55rem; height: .55rem; display: inline-block; margin: -.25rem .15rem 0 .3rem; border: solid currentColor; border-width: 0 1.5px 1.5px 0; transform: rotate(45deg); }
details[open] > summary .chevron { transform: rotate(225deg); margin-top: .25rem; }
.language ul { position: absolute; inset: calc(100% + .45rem) 0 auto auto; min-width: 10.5rem; margin: 0; padding: .35rem; list-style: none; background: #211730; border: 1px solid var(--line); border-radius: 5px; box-shadow: 0 10px 28px #0006; }
.language a { display: block; padding: .48rem .65rem; text-decoration: none; }
.language a:hover, .language a[aria-current] { color: var(--accent); background: #332446; }
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; gap: clamp(1.5rem, 5vw, 6rem); padding-block: clamp(2.8rem, 6vw, 7.4rem); }
.kicker, figcaption { font: 700 .76rem/1.4 ui-monospace, monospace; letter-spacing: .12em; text-transform: uppercase; }
.kicker { display: flex; align-items: center; gap: .65rem; margin: 0 0 1.25rem; }
.kicker > span { background: var(--accent); width: .62rem; height: .62rem; flex: none; box-shadow: 0 0 15px #d5ff5950; }
h1, h2 { font-weight: 860; letter-spacing: -.075em; line-height: .96; margin: 0; }
h1 { font-size: clamp(2.7rem, 5.85vw, 6.25rem); }
h1 em { display: block; color: var(--accent); font-style: normal; }
.intro { max-width: 38ch; color: #d8cee9; margin-block: 1.45rem 1.7rem; font-size: clamp(1rem, 1.3vw, 1.15rem); }
.actions { display: flex; gap: .65rem; flex-wrap: wrap; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: .9rem; padding: .7rem 1rem; min-height: 46px; border: 1px solid var(--line); border-radius: 4px; font-weight: 730; font-size: .875rem; text-decoration: none; }
.button span { font-size: 1.05rem; line-height: 1; }
.primary { color: var(--ink); background: var(--accent); border-color: var(--accent); }
.primary:hover { background: #e5ff9c; }
.secondary:hover { border-color: var(--lavender); }
.study { margin: 0; background: #211530; border: 1px solid var(--line); padding: .55rem .55rem 0; }
.study img { width: 100%; height: auto; }
figcaption { display: flex; gap: .65rem; min-height: 43px; align-items: center; padding: .45rem .25rem; color: #d8cee9; }
figcaption span { color: var(--accent); flex: none; }
.directory { color-scheme: light; color: var(--ink); background: var(--paper); border-top: 5px solid var(--accent); }
.directory-inner { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; gap: 2rem; padding-block: clamp(2.6rem, 5vw, 4.5rem); }
.directory .kicker { margin-bottom: .9rem; }
.directory .kicker > span { background: #673ccb; }
h2 { font-size: clamp(2.15rem, 4vw, 4rem); }
.directory-copy { max-width: 39ch; margin: 1rem 0 0; color: #49405b; }
.category-menu { border: 1px solid #a59bb7; border-radius: 5px; background: #faf9fe; margin-top: .5rem; }
.category-menu summary { min-height: 58px; display: flex; gap: .9rem; align-items: center; padding: .7rem 1rem; font-weight: 780; }
.category-menu summary:hover { background: #e9e2f8; }
.category-menu .chevron { margin-left: auto; flex: none; }
.category-icon { display: grid; place-items: center; width: 1.9rem; height: 1.9rem; border-radius: 3px; background: #e7def8; color: #3f2380; font: 700 1.25rem/1 ui-monospace, monospace; flex: none; }
.category-menu ol { list-style: none; margin: 0; padding: 0; }
.category-menu li { border-top: 1px solid #ded5ee; }
.category-menu li a { display: grid; grid-template-columns: 1.6rem 1fr auto; gap: .65rem; align-items: center; padding: .7rem 1rem; min-height: 44px; font-weight: 620; text-decoration: none; }
.category-menu li a:hover { background: #ece5f9; }
.row-no { font: .75rem/1 ui-monospace, monospace; color: #55486a; }
.row-arrow { color: #673ccb; }
.site-footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem; padding-block: 1.75rem; }
.site-footer p { margin: 0; }
.site-footer p span { display: block; color: #c6bbd8; font-size: .875rem; }
@media (max-width: 790px) {
  .hero, .directory-inner { grid-template-columns: 1fr; }
  .hero { gap: 2rem; }
  h1 { font-size: clamp(2.35rem, 11vw, 5.5rem); }
  .directory-inner { gap: 1rem; }
  .study { max-width: 650px; }
}