:root {
  color-scheme: dark;
  --paper: #111310;
  --surface: #181b17;
  --ink: #f1efe7;
  --muted: #a4a79d;
  --faint: #73786f;
  --line: #30352d;
  --accent: #c7ef65;
  --display: Georgia, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 82% 6%, rgba(199, 239, 101, .065), transparent 26rem),
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 10;
  padding: .65rem 1rem;
  background: var(--accent);
  color: #12150e;
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform .2s ease;
}

.skip-link:focus { transform: translateY(0); }

.site-header,
main,
.site-footer {
  width: min(1160px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 88px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .09em;
  text-decoration: none;
  text-transform: uppercase;
}

.brand-mark {
  position: relative;
  width: 30px;
  height: 30px;
  border: 1px solid var(--accent);
  border-radius: 50%;
}

.brand-mark::after {
  position: absolute;
  inset: 9px;
  background: var(--accent);
  border-radius: 50%;
  content: "";
}

nav { display: flex; gap: clamp(1.25rem, 3vw, 2.8rem); }
nav a { color: var(--muted); font-size: .78rem; text-decoration: none; transition: color .2s ease; }
nav a:hover { color: var(--accent); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(270px, .65fr);
  gap: clamp(3rem, 8vw, 8rem);
  align-items: end;
  min-height: min(730px, calc(100vh - 88px));
  padding: clamp(5rem, 11vw, 9rem) 0 clamp(5rem, 9vw, 8rem);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: .7rem;
  margin: 0 0 1.8rem;
  color: var(--accent);
  font: 700 .67rem/1.2 var(--mono);
  letter-spacing: .13em;
  text-transform: uppercase;
}

.eyebrow > span { width: 1.4rem; height: 1px; background: currentColor; }

h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-family: var(--display); font-weight: 400; letter-spacing: -.045em; }
h1 { margin-bottom: 2rem; font-size: clamp(4rem, 8.5vw, 8rem); line-height: .88; }
h1 em { color: var(--muted); font-weight: 400; }

.hero-intro {
  max-width: 680px;
  margin-bottom: 2.5rem;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
}

.text-link {
  display: inline-flex;
  gap: .75rem;
  align-items: center;
  padding-bottom: .3rem;
  border-bottom: 1px solid var(--accent);
  font-size: .78rem;
  font-weight: 700;
  text-decoration: none;
}

.text-link span { color: var(--accent); transition: transform .2s ease; }
.text-link:hover span { transform: translate(.2rem, .2rem); }

.desk-card {
  padding: 1.5rem;
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(255, 255, 255, .025), transparent 70%);
}

.desk-card-top { display: flex; justify-content: space-between; color: var(--faint); font: .61rem var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.status { color: var(--accent); }
.status::before { margin-right: .4rem; content: "●"; font-size: .5rem; }
blockquote { margin: 4.5rem 0 3rem; font: italic 1.6rem/1.3 var(--display); letter-spacing: -.02em; }
.desk-card > p { margin: 0; color: var(--muted); font-size: .8rem; }

.section { padding: clamp(5.5rem, 10vw, 9rem) 0; border-top: 1px solid var(--line); }

.section-heading {
  display: grid;
  grid-template-columns: 1fr .65fr;
  gap: 4rem;
  align-items: end;
  margin-bottom: clamp(4rem, 8vw, 7rem);
}

.section-heading h2,
.about h2 { margin-bottom: 0; font-size: clamp(3.2rem, 6.4vw, 6.2rem); line-height: .96; }
.section-heading > p { max-width: 430px; margin-bottom: .3rem; color: var(--muted); }

.note {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr) 70px;
  gap: clamp(1.5rem, 5vw, 5rem);
  padding: 2.8rem 0;
  border-top: 1px solid var(--line);
}

.note:last-child { border-bottom: 1px solid var(--line); }
.note-meta { display: flex; flex-direction: column; color: var(--faint); font: .64rem/1.5 var(--mono); letter-spacing: .06em; text-transform: uppercase; }
.note-meta span:first-child { color: var(--accent); }
.note h3 { margin-bottom: .7rem; font: 400 clamp(1.75rem, 3vw, 2.65rem)/1.1 var(--display); letter-spacing: -.025em; }
.note h3 + p, details > p { max-width: 670px; color: var(--muted); }
.note-number { justify-self: end; color: var(--line); font: italic 2.5rem var(--display); }

details { margin-top: 1.3rem; }
summary { width: fit-content; cursor: pointer; font-size: .74rem; font-weight: 700; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary span { display: inline-block; margin-left: .5rem; color: var(--accent); }
details[open] summary span { transform: rotate(45deg); }
details > p { margin-top: 1rem; }

.topics > h2 { max-width: 700px; margin-bottom: clamp(3rem, 7vw, 6rem); font-size: clamp(3rem, 5.5vw, 5.4rem); line-height: 1; }
.topic-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.topic-grid article { min-height: 280px; padding: 1.8rem; border: 1px solid var(--line); border-right: 0; transition: background .2s ease, transform .2s ease; }
.topic-grid article:last-child { border-right: 1px solid var(--line); }
.topic-grid article:hover { background: var(--surface); transform: translateY(-4px); }
.topic-grid article > span { color: var(--accent); font: .62rem var(--mono); letter-spacing: .07em; text-transform: uppercase; }
.topic-grid h3 { margin: 6rem 0 .5rem; font: 400 2rem var(--display); }
.topic-grid p { max-width: 280px; margin: 0; color: var(--muted); font-size: .88rem; }

.about { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(3rem, 10vw, 10rem); }
.about-copy { padding-top: 3rem; color: var(--muted); }
.about-copy .about-lead { color: var(--ink); font: 1.55rem/1.45 var(--display); }

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 130px;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: .69rem;
}

.site-footer > p { margin: 0; }
.domain { justify-self: end; font-family: var(--mono); }

.error-page { display: grid; min-height: 100vh; place-items: center; padding: 1.5rem; }
.error-shell { width: min(720px, 100%); }
.error-code { margin: 2.2rem 0 .6rem; color: var(--accent); font: 700 .68rem var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.error-shell h1 { margin-bottom: 1.5rem; font-size: clamp(4rem, 14vw, 8rem); }
.error-shell > p:not(.error-code) { max-width: 520px; margin-bottom: 2rem; color: var(--muted); }

@media (max-width: 880px) {
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .desk-card { max-width: 470px; }
  .section-heading { grid-template-columns: 1fr; gap: 2rem; }
  .note { grid-template-columns: 130px minmax(0, 1fr) 45px; gap: 2rem; }
  .topic-grid { grid-template-columns: 1fr; }
  .topic-grid article, .topic-grid article:last-child { min-height: auto; border-right: 1px solid var(--line); border-bottom: 0; }
  .topic-grid article:last-child { border-bottom: 1px solid var(--line); }
  .topic-grid h3 { margin-top: 3.5rem; }
  .about { grid-template-columns: 1fr; gap: 1rem; }
  .about-copy { padding-top: 0; }
}

@media (max-width: 620px) {
  .site-header, main, .site-footer { width: min(100% - 30px, 1160px); }
  .site-header { min-height: 74px; }
  .brand > span:last-child { display: none; }
  nav { gap: 1rem; }
  .hero { gap: 3.5rem; padding: 4.5rem 0 5rem; }
  h1 { font-size: clamp(3.5rem, 17vw, 5.4rem); }
  .section { padding: 5rem 0; }
  .note { grid-template-columns: 1fr; gap: 1rem; padding: 2.2rem 0; }
  .note-meta { flex-direction: row; justify-content: space-between; }
  .note-number { display: none; }
  .site-footer { grid-template-columns: 1fr auto; min-height: 110px; }
  .site-footer > p:nth-child(2) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}