:root {
  color-scheme: dark;
  --bg: #0d1117;
  --panel: #151b24;
  --text: #eef2f6;
  --muted: #9ca9b8;
  --line: #2b3543;
  --accent: #83d7b5;
}

* { box-sizing: border-box; }

html { font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 80% 0%, rgba(55, 123, 100, .22), transparent 34rem),
    var(--bg);
}

a { color: inherit; }

.shell {
  width: min(760px, calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0 48px;
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
}

.brand { font-weight: 750; text-decoration: none; letter-spacing: -.02em; }
.tag, .eyebrow { color: var(--accent); font: 700 .75rem/1.2 ui-monospace, monospace; letter-spacing: .08em; text-transform: uppercase; }
.hero { padding: 88px 0 70px; }
.eyebrow { margin: 0 0 18px; }

h1 {
  max-width: 690px;
  margin: 0;
  font-size: clamp(2.5rem, 8vw, 5.4rem);
  line-height: .98;
  letter-spacing: -.055em;
}

.lead {
  max-width: 620px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.32rem);
  line-height: 1.6;
}

h2 { margin: 0 0 18px; font-size: .82rem; color: var(--muted); text-transform: uppercase; letter-spacing: .09em; }

.project {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(21, 27, 36, .82);
  text-decoration: none;
  transition: border-color .2s, transform .2s;
}

.project:hover { border-color: var(--accent); transform: translateY(-2px); }
.project strong { display: block; margin-bottom: 7px; font-size: 1.15rem; }
.project small { color: var(--muted); font-size: .96rem; line-height: 1.5; }

.document { padding: 72px 0; }
.document h1 { font-size: clamp(2.35rem, 7vw, 4.4rem); }
.document h2 { margin-top: 48px; color: var(--text); font-size: 1.08rem; letter-spacing: 0; text-transform: none; }
.document p, .document li { color: var(--muted); line-height: 1.7; }
.document a { color: var(--accent); }
.document .updated { margin-top: 18px; font-size: .88rem; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button { padding: 12px 16px; border: 1px solid var(--line); border-radius: 10px; text-decoration: none; }
.button.primary { border-color: var(--accent); color: var(--accent); }

footer { margin-top: 80px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: .84rem; }

@media (max-width: 520px) {
  .shell { width: min(100% - 28px, 760px); padding-top: 22px; }
  .hero { padding: 64px 0 54px; }
  .tag { display: none; }
}