:root {
  --accent: #2563eb;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: #f3f4f6;
  line-height: 1.7;
}

.page {
  max-width: 820px;
  margin: 32px auto;
  background: #fff;
  padding: 48px 56px;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 16px;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 20px;
}

.header h1 { font-size: 32px; }
.tagline { color: var(--muted); margin-top: 4px; }
.contact { list-style: none; font-size: 14px; color: var(--muted); text-align: right; }
.contact a { color: var(--accent); text-decoration: none; }

section { margin-top: 32px; }
h2 {
  font-size: 18px;
  color: var(--accent);
  border-left: 4px solid var(--accent);
  padding-left: 10px;
  margin-bottom: 14px;
}

.item { margin-bottom: 18px; }
.item-head { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.role { color: var(--muted); font-size: 14px; margin-left: 8px; text-decoration: none; }
.date { color: var(--muted); font-size: 14px; }
.item ul { margin: 6px 0 0 20px; font-size: 15px; }
.tech { color: var(--muted); font-size: 14px; list-style: none; margin-left: -20px; }

.skills { display: flex; flex-wrap: wrap; gap: 8px; }
.skills span {
  background: #eff6ff;
  color: var(--accent);
  border: 1px solid #bfdbfe;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 14px;
}

ul.plain { margin-left: 20px; font-size: 15px; }

/* 论文 / 专利列表 */
.pubs { margin-left: 22px; font-size: 15px; }
.pubs li { margin-bottom: 14px; }
.authors { color: var(--text); font-size: 14px; }
.venue { color: var(--muted); font-size: 14px; font-style: italic; }
.doi { font-size: 13px; color: var(--accent); text-decoration: none; margin-left: 6px; }
.tag {
  display: inline-block;
  font-size: 12px;
  font-style: normal;
  color: var(--accent);
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 4px;
  padding: 0 6px;
  margin-left: 6px;
  vertical-align: 1px;
}
.tag-hl { color: #b45309; background: #fffbeb; border-color: #fde68a; }
.tag-ok { color: #047857; background: #ecfdf5; border-color: #a7f3d0; }
.tag-pending { color: #b45309; background: #fffbeb; border-color: #fde68a; }
.note { color: var(--muted); font-size: 13px; margin-bottom: 10px; }
.en { font-size: 20px; color: var(--muted); font-weight: 400; margin-left: 6px; }

footer {
  margin-top: 40px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

@media (max-width: 640px) {
  .page { margin: 0; padding: 28px 20px; border-radius: 0; }
  .contact { text-align: left; }
}

@media print {
  body { background: #fff; }
  .page { box-shadow: none; margin: 0; max-width: none; }
}