/* =========================================
   Global page styling
========================================= */

* {
  transition: all 0.15s ease;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  font-size: 16px;
  color: #222;
  margin: 0;
  background: #ffffff;
}

a {
  color: #2a5db0;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: 900px;
  margin: auto;
  padding: 30px 0 60px 0;
}
.container {
  width: 920px;
}

/* =========================================
   Header
========================================= */

.header {
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding-top: 14px;
}

.header img {
  width: 160px;
  border-radius: 10px;
  margin-right: 30px;
  object-fit: cover;
}

.name {
  font-size: 34px;
  font-weight: 700;
}

.hero-tag {
  font-size: 20px;
  font-weight: 600;
  margin-top: 8px;
}

.hero-sub {
  opacity: 0.85;
  margin-top: 5px;
  font-size: 15px;
}

/* =========================================
   Vision Banner
========================================= */

.vision-banner {
  text-align: center;
  font-size: 18px;
  font-weight: 500;
  max-width: 800px;
  margin: 25px auto 45px auto;
  color: #333;
  line-height: 1.7;
  border-top: 1px solid #eee;
  border-bottom: 1px solid #eee;
  padding: 18px 0;
}

/* =========================================
   Links bar
========================================= */

.links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  margin-top: 10px;
}

.links a {
  text-decoration: none;
  font-weight: 500;
}

.links a:hover {
  text-decoration: underline;
}

.divider {
  color: #aaa;
}

/* =========================================
   Section titles
========================================= */

.section-title {
  font-size: 26px;
  font-weight: 700;
  margin-top: 50px;
  margin-bottom: 22px;
}

.subsection-title {
  font-size: 20px;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 18px;
}

/* =========================================
   Publication layout
========================================= */

.publication {
  display: flex;
  gap: 20px;
  margin-bottom: 28px;
  padding: 10px;
  border-radius: 8px;
}

.publication:hover {
  background: #f7f7f7;
  transform: translateY(-2px);
}

.publication img {
  width: 190px;
  height: 120px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
}

.paper-text {
  max-width: 660px;
}

.paper-title {
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
}

.paper-authors {
  font-size: 14px;
  margin-bottom: 4px;
}

.paper-venue {
  font-size: 14px;
  color: #666;
  margin-top: 3px;
}

.paper-desc {
  font-weight: 400;
  font-size: 15px;
  color: #555;
  margin-left: 6px;
}

.paper-links {
  font-size: 14px;
  margin-top: 4px;
}

.paper-links a {
  margin-right: 6px;
}

/* =========================================
   Research ladder
========================================= */

.research-ladder {
  border-left: 3px solid #e0e0e0;
  padding-left: 22px;
  margin-left: 10px;
}

.ladder-level {
  margin-bottom: 40px;
  padding-bottom: 18px;
  border-bottom: 1px solid #eee;
}

.ladder-level:last-child {
  border-bottom: none;
}

.ladder-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.ladder-desc {
  font-size: 15px;
  color: #555;
  margin-bottom: 18px;
}

/* =========================================
   Badges
========================================= */

.badge {
  font-size: 13px;
  padding: 2px 7px;
  border-radius: 4px;
  background: #f1f1f1;
  margin-left: 6px;
}

/* =========================================
   Foldable research sections
========================================= */

details {
  margin-top: 15px;
}

summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
}

/* =========================================
   Industry / Experience
========================================= */

.experience-block {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.exp-item {
  padding-bottom: 20px;
  border-bottom: 1px solid #eee;
}

.exp-title {
  font-weight: 700;
  font-size: 18px;
}

.exp-date {
  float: right;
  font-weight: 400;
  font-size: 14px;
  color: #666;
}

.exp-item ul {
  margin-top: 10px;
  padding-left: 18px;
  font-size: 15px;
  color: #444;
}

/* =========================================
   Footer
========================================= */

.footer {
  margin-top: 50px;
  font-size: 14px;
  color: #666;
}