body {
  margin: 0;
  font-family: "Inter", sans-serif;
  background: #ffffff;
  color: #222;
}

.nav-bar {
  width: 100%;
  height: 72px;
  background: #ffffff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 30px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo {
  width: 42px;
  height: 42px;
  background: url("/static/img/logo.png") no-repeat center/contain;
}

.nav-title {
  font-size: 26px;
  font-weight: 600;
  margin-top: 6px;
}

.nav-menu {
  display: flex;
  gap: 50px;
  font-size: 18px;
  align-items: center;
  white-space: nowrap;
  margin-right: 60px;
}

.nav-menu a,
.dropdown-main {
  color: #333;
  text-decoration: none;
  height: 25px;
  display: flex;
  align-items: center;
  cursor: pointer;
}

.nav-menu a:hover,
.dropdown-main:hover {
  color: #000;
}

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-content {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: #ffffff;
  display: none;
  padding: 6px 0;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
  z-index: 999;
  width: max-content;
  min-width: 0;
}

.dropdown-content a {
  padding: 8px 16px;
  display: block;
  white-space: nowrap;
  text-decoration: none;
  color: #333;
  font-size: 16px;
}

.dropdown-content a:hover {
  background: #f3f3f3;
}

.dropdown:hover .dropdown-content {
  display: block;
}

.team {
  margin-top: 72px;
  width: 100%;
  height: 200px;
  background: rgba(106, 111, 179, 0.45) no-repeat center/cover;
  position: relative;
}

.team-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
}

.team-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: white;
  max-width: 760px;
  padding: 0 20px;
}

.team-text h1 {
  font-size: 40px;
  margin-bottom: 8px;
  font-weight: 700;
}

.team-text h2 {
  font-size: 20px;
  font-weight: 400;
  margin-bottom: 0;
  opacity: 0.9;
}

.main-wrapper {
  max-width: 1120px;
  margin: 40px auto 60px;
  padding: 0 24px;
}

.year-header {
  margin-top: 32px;
  margin-bottom: 8px;
  font-size: 20px;
  font-weight: 700;
}

.section-divider {
  height: 1px;
  background: #ddd;
  margin-bottom: 6px;
}

.pub-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 10px 10px 14px;
  border-bottom: 1px solid #eee;
  font-size: 14px;
}
.pub-main {
  flex: 1;
  padding-right: 16px;
}
.pub-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}

.pub-authors {
  font-size: 12px;
  color: #555;
  margin-bottom: 2px;
}

.pub-meta {
  font-size: 12px;
  color: #777;
}
.publication-year {
  width: 90px;
  text-align: right;
  font-size: 12px;
  color: #777;
  flex-shrink: 0;
}
.down_btn button {
  background: #f9f1ea;
  font-size: 12px;
  color: #000000;
  cursor: pointer;
  padding: 5px 20px;
  line-height: 20px;
  border-radius: 5px;
  border: none;
  letter-spacing: -1px;
}
.down_btn button:hover {
  box-shadow: 1px 1px 1px rgba(164, 164, 164, 0.4);
}

.professor-footer {
  display: block;
  width: 100vw;
  background: rgba(106, 111, 179, 0.47);
  padding: 48px 0;
  margin-top: 60px;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
}

.footer-inner {
  max-width: 1130px;
  margin: 0 auto;
  padding: 0 20px;
  color: #333;
}

.footer-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.footer-info {
  font-size: 12px;
  line-height: 1.7;
  color: #333;
  margin-bottom: 24px;
}

.footer-divider {
  width: 100%;
  border-top: 1px solid #444;
  margin: 20px 0;
}

.footer-copy {
  font-size: 10px;
  color: #666;
}

@media (max-width: 768px) {
  .nav-menu {
    gap: 24px;
    font-size: 16px;
    margin-right: 0;
  }
  .team {
    height: 220px;
  }
  .team-text h1 {
    font-size: 40px;
  }
  .team-text h2 {
    font-size: 22px;
  }
  .pub-row {
    flex-direction: column;
  }
  .publication-year {
    width: 100%;
    text-align: left;
    margin-bottom: 4px;
  }

  .pub-center {
    padding: 0;
  }
}