/* Personal homepage — clean academic style */

:root {
  --text: #2b2b2b;
  --muted: #6b6b6b;
  --link: #2a6db0;
  --link-hover: #14457c;
  --border: #e3e3e3;
  --bg: #ffffff;
  --accent: #1f4e79;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

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

/* ---------- top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: saturate(180%) blur(6px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--accent);
}
.nav a {
  margin-left: 22px;
  color: var(--muted);
  font-size: 0.95rem;
}
.nav a:hover { color: var(--link); text-decoration: none; }

/* ---------- layout ---------- */
.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: 40px 28px 80px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 48px;
  align-items: start;
}

/* ---------- sidebar ---------- */
.sidebar {
  position: sticky;
  top: 84px;
  text-align: center;
}
.sidebar img.avatar {
  width: 200px;
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--border);
}
.sidebar .name {
  margin: 18px 0 4px;
  font-size: 1.25rem;
  font-weight: 700;
}
.sidebar .role {
  font-weight: 600;
  color: var(--text);
  margin: 0 0 2px;
  font-size: 0.95rem;
}
.sidebar .meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 2px 0;
}
.sidebar .links {
  margin-top: 14px;
  font-size: 0.9rem;
  line-height: 1.9;
}
.sidebar .links a { display: inline-block; }

/* ---------- main content ---------- */
.content { min-width: 0; }
.content section { margin-bottom: 38px; }
.content h2 {
  font-size: 1.25rem;
  color: var(--accent);
  margin: 0 0 14px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--border);
}
.content p { margin: 0 0 14px; }

/* education / interests */
.edu-item { margin-bottom: 14px; }
.edu-item .degree { font-weight: 600; }
.edu-item .where { color: var(--text); }
.edu-item .date { color: var(--muted); font-size: 0.9rem; }

ul.interests {
  margin: 0;
  padding-left: 1.2em;
}
ul.interests li { margin-bottom: 6px; }

/* publications */
.pub-year {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent);
  margin: 22px 0 10px;
}
.pub-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.pub-list li {
  margin-bottom: 16px;
  padding-left: 18px;
  position: relative;
}
.pub-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  background: var(--link);
  border-radius: 50%;
}
.pub-list .vname { font-weight: 700; color: var(--accent); margin-right: 4px; }
.pub-list .me { font-weight: 700; text-decoration: underline; }
.pub-list .title { font-style: italic; }
.pub-list .venue { color: var(--muted); }
.tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: #1a7a3c;
  background: #e8f5ec;
  border-radius: 4px;
  padding: 1px 7px;
  margin-left: 4px;
  vertical-align: middle;
}

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 24px 16px 40px;
}

/* ---------- responsive ---------- */
@media (max-width: 800px) {
  .wrap {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 28px 20px 60px;
  }
  .sidebar {
    position: static;
    top: auto;
  }
  .sidebar img.avatar { width: 160px; }
  .nav a { margin-left: 16px; }
}