:root {
  --bg: #f7f8fa;
  --card: #ffffff;
  --text: #1f2328;
  --sub: #59636e;
  --brand: #2563eb;
  --line: #e5e7eb;
  --max: 980px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

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

.container {
  width: min(var(--max), 92%);
  margin: 0 auto;
}

.nav {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 56px;
}
.nav-links a {
  margin-left: 16px;
  color: var(--text);
}
.nav-links a.active {
  color: var(--brand);
  font-weight: 600;
}

.hero {
  padding: 42px 0 20px;
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 20px;
  align-items: center;
}
.avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid #fff;
  box-shadow: 0 4px 18px rgba(0,0,0,.08);
}
h1, h2, h3 { margin: 0 0 12px; }
p { margin: 0 0 12px; color: var(--sub); }

.section { padding: 18px 0 6px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 18px;
  margin: 14px 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
}

.tag {
  display: inline-block;
  margin: 0 8px 8px 0;
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--sub);
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--brand);
  color: var(--brand);
  font-weight: 600;
  margin-right: 10px;
}
.btn.primary {
  background: var(--brand);
  color: #fff;
}
.cover, .shot {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
}

.footer {
  padding: 28px 0 40px;
  color: var(--sub);
  font-size: 14px;
}
.small { font-size: 14px; color: var(--sub); }