:root {
  color-scheme: dark;
  --bg: #0B0F19;
  --bg-soft: #111827;
  --surface: #151c2c;
  --line: rgba(255,255,255,0.08);
  --text: #e8edf6;
  --muted: #9aa7bd;
  --accent: #8b5cf6;
  --accent-2: #22d3ee;
  --green: #34d399;
  --amber: #fbbf24;
  --red: #f87171;
  --radius: 14px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Outfit', ui-sans-serif, system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 600px at 50% -10%, rgba(139,92,246,0.12), transparent), var(--bg);
  line-height: 1.7;
}
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 22px 90px; }
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px; backdrop-filter: blur(12px);
  background: rgba(11,15,25,0.72); border-bottom: 1px solid var(--line);
}
nav .brand { font-weight: 800; letter-spacing: .5px; }
nav .links a { color: var(--muted); margin-left: 18px; font-size: .9rem; }
nav .links a:hover { color: var(--text); }
section { padding: 56px 0 0; }
h1 { font-size: 2.6rem; line-height: 1.15; margin: 0 0 14px; }
h2 { font-size: 1.5rem; margin: 0 0 18px; }
h3 { font-size: 1.05rem; margin: 0 0 6px; }
.lead { color: var(--muted); font-size: 1.1rem; max-width: 640px; }
.hero { padding-top: 72px; }
.badge {
  display: inline-block; font-size: .72rem; padding: 3px 9px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--muted); margin-bottom: 18px;
}
.badge.conditional { color: var(--amber); border-color: rgba(251,191,36,.4); background: rgba(251,191,36,.08); }
.badge.featured { color: var(--green); border-color: rgba(52,211,153,.4); background: rgba(52,211,153,.08); }
.grid { display: grid; gap: 18px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cards { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; display: flex; flex-direction: column; gap: 10px;
}
.card .tag { font-size: .78rem; color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag-chip { font-size: .72rem; padding: 2px 8px; border-radius: 6px; background: rgba(139,92,246,.12); color: #c4b5fd; border: 1px solid rgba(139,92,246,.25); }
.highlights { margin: 4px 0 0; padding-left: 18px; color: var(--muted); font-size: .86rem; }
.highlights li { margin: 3px 0; }
.limit { font-size: .76rem; color: var(--red); border-top: 1px dashed var(--line); padding-top: 8px; }
.ev { font-size: .78rem; color: var(--green); }
.path-chip { font-size: .74rem; color: var(--muted); background: rgba(255,255,255,.04); border: 1px solid var(--line); padding: 2px 8px; border-radius: 6px; font-family: ui-monospace, Menlo, monospace; }
.project-links { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; padding-top: 4px; }
.project-link { font-size: .78rem; color: var(--accent-2); border: 1px solid rgba(34,211,238,.26); border-radius: 7px; padding: 5px 9px; }
.project-link:hover { color: var(--text); border-color: var(--accent-2); text-decoration: none; }
.notice { font-size: .8rem; color: var(--muted); border-left: 3px solid var(--accent); padding: 8px 14px; background: rgba(139,92,246,.06); border-radius: 0 8px 8px 0; }
.footer { margin-top: 70px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; }
.cta { display: inline-block; margin-top: 22px; padding: 12px 22px; border-radius: 10px; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #06121f; font-weight: 700; }
@media (max-width: 760px) { .grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; } h1 { font-size: 2rem; } }