:root {
  --text: #111;
  --muted: #555;
  --muted-light: #9aa0a6;
  --rule: #e6e6e6;
  --link: #1a57ff;
  --bg: #fff;
  --max: 980px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 40px 20px; }

.grid {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 32px;
  align-items: start;
}

.site-header {
  display: flex;
  gap: 18px;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  margin-bottom: 18px;
}

.header-text {
  min-width: 0;
}

.avatar {
  width: 112px;
  height: 112px;
  border-radius: 12px;
  object-fit: cover;
  border: 1px solid var(--rule);
}

h1 {
  margin: 0;
  font-size: 52px;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.tagline {
  margin-top: 8px;
  color: var(--muted);
  font-size: 18px;
}

.rule { height: 1px; background: var(--rule); margin: 18px 0 26px; }

h2 {
  margin: 0 0 10px;
  font-size: 26px;
  letter-spacing: -0.01em;
}

p { margin: 0 0 14px; max-width: 70ch; }

.links ul,
.now-list {
  margin: 10px 0 0 20px;
  padding: 0;
}

.links li,
.now-list li {
  margin: 8px 0;
}

footer {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 14px;
}

/* Sidebar */
.sidebar { position: relative; }
.sidebar .sticky { position: sticky; top: 20px; }

/* Mobile: stack */
@media (max-width: 820px) {
  .grid { grid-template-columns: 1fr; }
  h1 { font-size: 42px; }
  header { align-items: flex-start; }
}