:root {
  --bg: #101827;
  --panel: #172236;
  --text: #eef6ff;
  --muted: #9aabc0;
  --line: #2a3850;
  --accent: #5eead4;
  --accent-dark: #092e2b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 75% 10%, rgba(94, 234, 212, .1), transparent 28rem),
    var(--bg);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

.site-header,
main,
footer {
  width: min(calc(100% - 40px), 1080px);
  margin-inline: auto;
}

.site-header {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 12px; font-weight: 750; }
.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: var(--accent-dark);
  background: var(--accent);
  font-size: .8rem;
  font-weight: 900;
}

.main-site { color: var(--muted); font-size: .9rem; }
.main-site:hover { color: var(--accent); }

.intro { padding: 110px 0 90px; }
.eyebrow, .status { color: var(--accent); font-size: .72rem; font-weight: 800; letter-spacing: .14em; }
h1 { max-width: 800px; margin: 10px 0 20px; font-size: clamp(2.8rem, 8vw, 6.2rem); line-height: 1.02; letter-spacing: -.06em; }
.intro > p:last-child { max-width: 680px; margin: 0; color: var(--muted); font-size: 1.05rem; }

.projects { padding: 50px 0 100px; }
.section-title { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 28px; }
.section-title h2, .rules h2 { margin: 0; font-size: clamp(1.5rem, 4vw, 2.3rem); }
.section-title span { color: var(--muted); font-size: .85rem; }
.project-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.project-card {
  min-height: 260px;
  padding: 28px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: end;
  gap: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(23, 34, 54, .82);
  transition: transform .2s ease, border-color .2s ease;
}
.project-card:hover { transform: translateY(-4px); border-color: var(--accent); }
.number { align-self: start; color: var(--muted); font-family: monospace; }
.project-card h3 { margin: 5px 0; font-size: 1.8rem; }
.project-card p:last-child { margin: 0; color: var(--muted); font-size: .9rem; }
.arrow { color: var(--accent); font-size: 1.8rem; }

.rules { padding: 70px 0 110px; border-top: 1px solid var(--line); }
.rules ol { margin: 35px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.rules li { padding: 20px 0; display: grid; grid-template-columns: 180px 1fr; border-bottom: 1px solid var(--line); }
.rules li::before { counter-increment: item; }
.rules span { color: var(--muted); }

footer { min-height: 110px; padding: 30px 0; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: .78rem; }

@media (max-width: 700px) {
  .site-header, main, footer { width: min(calc(100% - 28px), 1080px); }
  .intro { padding: 80px 0 60px; }
  .project-grid { grid-template-columns: 1fr; }
  .project-card { min-height: 220px; }
  .rules li { grid-template-columns: 1fr; gap: 5px; }
  footer { align-items: start; flex-direction: column; justify-content: center; }
}