:root {
  --primary: #2E5497;
  --accent: #E8A602;
  --bg: #ffffff;
  --text: #0f172a;
  --card: #f7f9fc;
  --border: #e5e7eb;
  --card-bg:rgba(255, 255, 255, 0.2);
  --card-border:rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] {
  --bg: #0c1220;
  --text: #e5e7eb;
  --card: #141b2e;
  --border: #24314b;
  --card-bg:rgba(20, 27, 46, 0.35);
  --card-border:rgba(255, 255, 255, 0.15);
}

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

body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.page {
  margin: 0 auto;
  /* max-width: 1600px; */
  max-width: 90%;
  padding: 110px 8vw 60px;
}

/*  */
/* body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: url("../files/images/logo/background.webp") center/cover no-repeat;
  filter: blur(3px) brightness(0.6);
  transform: scale(1.08);
  z-index: -2;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.4),
    rgba(255, 255, 255, 0.2)
  );
  z-index: -1;
}

[data-theme="dark"] body::after {
  background: linear-gradient(
    135deg,
    rgba(7, 12, 24, 0.60),
    rgba(7, 12, 24, 0.40)
  );
} */
/*  */


a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent);
}

bi {
  font-weight:bold;
  font-style:italic;
}

hr {
  border:0;
  margin:0;
  padding:0;
  width:100%;
  height:1.2px;
  margin-top:15px;
  margin-bottom:5px;
  background-color:var(--text);
}

ul {
  margin-bottom: 15px;
  padding-left: 20px; 
}

li {
  margin-bottom: 5px;
}

.ul-team li::marker {
  color: var(--primary);
}

[id] {
  scroll-margin-top: 300px;
}

.topbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  z-index: 1000;
  border-bottom: 2px solid #cccccc;
}

/* .topbar {
  background: rgba(46, 84, 151, 0.72);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  backdrop-filter: blur(10px) saturate(140%);
} */

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
}

.logo-mark {
  background: #fff;
  color: var(--primary);
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-weight: 700;
}

.logo-text {
  font-size: 1.1rem;
  max-width: 340px;
  justify-content: center;
}

.logo img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  display: block;
}

.nav {
  display: flex;
  gap: 18px;
  font-size: 1.2rem;
}

.nav-link{
  color:#fff;
  margin-right: 10px;
  font-weight:500;
  position:relative;
  display:inline-block;
  text-decoration:none;
}

.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-6px;
  width:100%;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:bottom right;
  transition:transform .5s ease;
}

.nav-link:hover::after{
  transform:scaleX(1);
  transform-origin:bottom left;
}

.nav-link.active{
  color:var(--accent);
}

.nav-link.active::after{
  transform:scaleX(1);
}

.nav-item {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.submenu-toggle {
  border: none;
  background: transparent;
  color: #fff;
  cursor: pointer;
  margin-left: 4px;
  padding: 0 2px;
  font-size: 1.5rem;
  line-height: 1;
  /* display: inline-flex; */
  display: none;
  align-items: center;
  justify-content: center;
  transition: transform .2s ease;
}

.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  /* min-width: 132px; */
  padding: 8px;
  border-radius: 10px;
  background: var(--primary);
  border: 1px solid rgba(255,255,255,0.25);
  box-shadow: 0 8px 18px rgba(0,0,0,0.16);
  display: none;
  z-index: 1200;
}

.submenu a {
  display: block;
  color: #fff;
  font-size: 1.1rem;
  line-height: 1.2;
  padding: 8px 10px;
  border-radius: 8px;
  white-space: nowrap;
}

.nav-item.has-submenu {
  position: relative;
}

.nav-item.has-submenu::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  height: 10px;
}

.submenu a:hover {
  color: var(--accent);
}

.has-submenu:hover .submenu,
.has-submenu:focus-within .submenu {
  display: block;
}

.card {
  padding: 20px;
  border-radius: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: 0 6px 14px rgba(0,0,0,0.04);
}

/*  */
/* .card {
  padding: 20px;
  border-radius: 18px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow:
    0 8px 30px rgba(0, 0, 0, 0.10),
    inset 0 1px 0 rgba(255, 255, 255, 0.48),
    inset 0 -1px 0 rgba(255, 255, 255, 0.12);
  -webkit-backdrop-filter: blur(5px) saturate(165%);
  backdrop-filter: blur(5px) saturate(165%);
}

[data-theme="dark"] .card {
  box-shadow:
    0 8px 30px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.14);
} */
/*  */


.actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.theme-toggle {
  background: #fff;
  color: var(--primary);
  border: none;
  margin: 0;
  padding: 4px 5px 8px 4px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.2rem;
}

.lang-toggle {
  background: #fff;
  color: var(--primary);
  border: none;
  margin: 0;
  padding: 6px 6px;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.lang-toggle img {
  width: 25px;
  height: 25px;
  object-fit: contain;
  display: block;
}

.hamburger {
  display: none;
  background: #fff;
  color: var(--primary);
  border: none;
  padding: 8px 10px 7px 10px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.1rem;
}

.hero {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: var(--card);
}

.hero img {
  width: 100%;
  display: block;
  /* height:400px; */
  max-height: 530px;
}

.hero-text {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.6), rgba(0,0,0,0.1));
  color: #fff;
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
}

.image-centered {
  display:flex;
  align-items:center;
  vertical-align:-3px;
  text-decoration:none;
  width: fit-content;
}

.image-centered img {
  margin-right:6px;
}

[data-theme="dark"] .hero-text {
  background: rgba(20,27,46,0.9);
}

.black-link {
  color:var(--text);
  text-decoration:none;
}

.section {
  margin-top: 40px;
}

.section h1 {
  font-size: 2rem;
  margin-bottom: 15px;
  color: var(--primary);
}

.section h2 {
  font-size: 1.6rem;
  margin-bottom: 14px;
  color: var(--primary);
}

p {
  font-size: 1.15rem;
}

.section h3 {
  font-size: 1.35rem;
}

.medwei {
  font-weight:500;
}

/* .grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
} */

.grid {
  gap: 16px;
  display: grid;
  align-items: stretch;
  grid-template-columns: repeat(3, minmax(0, 1fr)); 
}

.grid > .black-link {
  display: block;
  height: 100%;
  min-width: 0;
}

.grid > .black-link > .card {
  height: 100%;
}

.grid2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.research-link {
  font-weight:bold;
  font-style:italic;
  margin-right:10px;
}

jt {
  font-weight:bold;
  font-style:italic;
}

jtb {
  color: white;
  font-weight: 700;
  font-size: 0.9rem;
  font-style: italic;
  padding: 0.5px 5px 1px 5px;
  background-color: #5F5F5F;
  border-top-left-radius: 5px;
  border-bottom-left-radius: 5px;
}

ift {
  color: white;
  font-weight: 700;
  font-size: 0.9rem;
  background-color: var(--primary);
  padding: 0.5px 5px 1px 5px;
  border-top-right-radius: 5px;
  border-bottom-right-radius: 5px;
}

.leader {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
  align-items: start;
  margin-bottom: 50px;
}

.leader-photo {
  width: 50%;
  max-width: 350px;
  height: auto; 
  border-radius: 14px;
  padding: 0;margin: 0;
}

.leader-photo img {
  width:330px;
  border-radius: 14px;
  margin-top: 50px;
  margin-left: 8px;
  border: 1px solid var(--border);
}

.leader-photo-zh {
  width: 60%;
  max-width: 350px;
  height: auto; 
  border-radius: 14px;
  padding: 0;margin: 0;
}

.leader-photo-zh img {
  width:310px;
  margin-top: 20px;
  border-radius: 14px;
  border: 1px solid var(--border);
}

.leader-text {
  padding-right: 2px;
  max-width: 1000px;
  font-size: 1.15rem;;
}

.list, .pub-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.list-item {
  display: grid;
  gap: 16px;
  background: var(--card);
  padding: 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
}

/*  */
/* .list-item {
  display: grid;
  gap: 16px;
  padding: 16px;
  border-radius: 14px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: 0 8px 28px rgba(0,0,0,0.12), inset 0 1px 0 rgba(255,255,255,0.45);
  -webkit-backdrop-filter: blur(5px) saturate(160%);
  backdrop-filter: blur(5px) saturate(160%);
}

[data-theme="dark"] .list-item {
  box-shadow: 0 10px 30px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.12);
} */
/*  */

.pub-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  background: var(--card);
  padding: 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  align-items: center;
}

/*  */
/* .pub-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  background: var(--card-bg);
  padding: 16px;
  border-radius: 14px;
  border: 1px solid var(--card-border);
  align-items: center;
  box-shadow: 0 8px 28px rgba(0,0,0,0.12), inset 0 1px 0 rgba(255,255,255,0.45);
  -webkit-backdrop-filter: blur(5px) saturate(160%);
  backdrop-filter: blur(5px) saturate(160%);
}

[data-theme="dark"] .pub-item {
  box-shadow: 0 10px 30px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.12);
} */
/*  */


.list-item img, .pub-item img {
  width: 120px;
  height: auto;
  border-radius: 10px;
}

/* .footer {
  text-align: center;
  padding: 24px;
  border-top: 1px solid var(--border);
  color: var(--text);
  background: var(--bg);
} */


/*  */
.footer {
  text-align: center;
  padding: 24px;
  color: var(--text);
  background: transparent;
  border-top: none;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}

[data-theme="dark"] .footer {
  background: transparent;
  border-top: none;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
/*  */

.view-narrow{
  display: none;
}

.site-footer {
  max-width: 90%;
  margin: 20px auto 0;
  margin-bottom: 0;
  padding: 0 8vw 60px;
  /* max-width: 1600px; */
  /* padding: 110px 8vw 60px; */
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 18px;
  align-items: start;
}

.footer-brand {
  display: flex;
  gap: 10px;
  align-items: center;
}

.footer-logo {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.footer-title {
  color: var(--primary);
  font-weight: 700;
}

.footer-subtitle {
  font-size: 0.9rem;
  opacity: 0.8;
}

.footer-more {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 8px;
}

.footer-more a {
  font-size: 0.95rem;
}

.footer-copy {
  margin-top: 10px;
  font-size: 0.88rem;
  opacity: 0.8;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: 1s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 2000px) {
  .hero img {
    height:400px;
  }
}

@media (max-width: 980px) {
  .page {
    max-width: 100%;
  }
  .site-footer{
    max-width: 100%;
  }
  .topbar {
    padding: 14px 10px;
  }
  .nav {
    font-size: 1.1rem;
  }
  .grid,.grid2 {
    grid-template-columns: 1fr;
  }
  .leader {
    grid-template-columns: 1fr;
  }
  .leader-photo img {
    margin-top: 15px;
    margin-left: 0;
  }
  .leader-photo-zh img {
    margin-top: 15px;
    margin-left: 0;
  }
  .hero img {
    height:100%;
  }
}

@media (min-width: 861px) {
  .submenu-toggle {
    display: none;
  }
  .has-submenu:hover .submenu,
  .has-submenu:focus-within .submenu {
    display: block;
  }
  .has-submenu:hover .submenu-toggle,
  .has-submenu:focus-within .submenu-toggle {
    transform: rotate(180deg);
  }
  .nav-item.has-submenu {
    position: relative;
  }
  .submenu {
    top: calc(100% + 12px);
    left: 0;
  }
  .nav-item.has-submenu::after {
    content: "";
    position: absolute;
    left: 0;
    top: 100%;
    width: 100%;
    height: 12px;
    background: transparent;
  }
  .has-submenu:hover .submenu,
  .has-submenu:focus-within .submenu,
  .submenu:hover {
    display: block;
  }
}

@media (max-width: 860px) {
  .theme-toggle {
    display: none;
  }
  .nav {
    top: 75px;
    gap: 15px;
    right: 15px;
    display: none;
    position: fixed;
    padding: 18px 20px;
    border-radius: 12px;
    flex-direction: column;
    align-items: flex-start;
    background: var(--primary);
  }
  .nav.open {
    display: flex;
  }
  .nav-link {
    font-size:1.2rem;
    margin-right: 5px;
    width: fit-content;
    align-self: flex-start;
  }
  .nav-item {
    width: 100%;
  }
  .nav-item > .nav-link {
    width: fit-content;
  }
  .submenu-toggle {
    /* display: inline-flex; */
    display: none;
  }
  .submenu {
    top: 0;
    left: auto;
    right: calc(100% + 20px);
    /* min-width: 80px; */
    padding: 6px;
  }
  .submenu a {
    padding: 7px 9px;
  }
  .nav-item.has-submenu {
    position: relative;
  }
  .nav-item.has-submenu::before {
    content: "";
    position: absolute;
    top: 0;
    right: 100%;
    width: 20px;
    height: 100%;
    background: transparent;
  }
  .has-submenu:hover .submenu,
  .has-submenu:focus-within .submenu,
  .submenu:hover {
    display: block;
  }
  .nav-item.open > .submenu {
    display: block;
  }
  .nav-item.open > .submenu-toggle {
    transform: rotate(180deg);
  }
  .hamburger {
    display: block;
  }
  .hero img {
    height:100%;
  }
  .view-narrow{
    display:block;
  }
  .view-width{
    display: none;
  }
  .footer-inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .page {
    padding-left:10px;
    padding-right:10px;
  }
  .site-footer {
    padding-left:10px;
    padding-right:10px;
  }
  .list-item, .pub-item {
    grid-template-columns: 1fr;
  }
  .hero img {
    height:100%;
  }
  .hero-text h1 {
    font-size: 1.1rem;
  }
  .hero-text p {
    font-size: 0.9rem;
  }
}