:root {
  --ink: #0d0d0d;
  --gray: #6e6e6e;
  --gray-light: #a3a3a3;
  --border: #ececec;
  --violet: #6427c9;
  --bg: #fafafa;
  --pill: 9999px;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  color: var(--ink);
  font-family: 'Inter', -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background: var(--bg);
}
.top {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  display: flex; align-items: center; gap: 8px;
  font-weight: 600; font-size: 1.02rem;
  color: var(--ink); text-decoration: none; letter-spacing: -0.02em;
}
.orb { width: 26px; height: 26px; display: block; }
.orb .p { transform-origin: center; animation: orb-pulse 2s ease-in-out infinite; }
.orb .p1 { animation-delay: 0s; } .orb .p2 { animation-delay: .12s; }
.orb .p3 { animation-delay: .24s; } .orb .p4 { animation-delay: .36s; }
.orb .p5 { animation-delay: .48s; } .orb .p6 { animation-delay: .60s; }
.orb .p7 { animation-delay: .72s; } .orb .p8 { animation-delay: .84s; }
.orb .p9 { animation-delay: .96s; } .orb .p10 { animation-delay: 1.08s; }
.orb .p11 { animation-delay: 1.2s; } .orb .p12 { animation-delay: 1.32s; }
@keyframes orb-pulse { 0%,100% { opacity: 1; } 50% { opacity: .4; } }
@media (prefers-reduced-motion: reduce) { .orb .p { animation: none; } }
.signin {
  font-size: 0.85rem; color: var(--ink); font-weight: 500;
  padding: 6px 14px; border-radius: var(--pill); text-decoration: none;
}
.signin:hover { background: rgba(13,13,13,0.06); }
article {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}
h1 { font-size: 2rem; letter-spacing: -0.03em; font-weight: 600; margin-bottom: 8px; }
.meta { color: var(--gray-light); font-size: 0.85rem; margin-bottom: 36px; }
h2 { font-size: 1.05rem; font-weight: 600; margin: 28px 0 8px; }
p, li { color: #2b2b2b; font-size: 0.97rem; }
ul { padding-left: 1.15rem; margin: 8px 0 0; }
li { margin: 4px 0; }
a { color: var(--violet); }
.foot {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px 40px;
  font-size: 0.7rem;
  color: var(--gray-light);
  font-family: var(--mono);
}
.foot a { color: var(--gray); text-decoration: none; }
.foot a:hover { color: var(--ink); }