:root {
  --bg-color: #fff;
  --text-color: #2d3748;
  --text-secondary: #4a5568;
  --accent-color: #224b8d;
  --accent-hover: #16386d;
  --border-color: #e2e8f0;
  --soft-bg: #f7f9fc;
  --shadow-color: rgba(0, 0, 0, 0.06);
  --transition-time: 0.2s;
  --content-width: 900px;
  --content-half-width: 450px;
  --side-nav-width: 10.25rem;
  --side-nav-gap: 2.2rem;
}

[data-theme="dark"] {
  --bg-color: #111827;
  --text-color: #e5e7eb;
  --text-secondary: #cbd5e1;
  --accent-color: #8bb7ff;
  --accent-hover: #b7d2ff;
  --border-color: #334155;
  --soft-bg: #1f2937;
  --shadow-color: rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

body {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 2.4rem 1.5rem 1.5rem;
  color: var(--text-color);
  background-color: var(--bg-color);
  font-family: "Merriweather", Georgia, "Times New Roman", serif;
  font-weight: 300;
  line-height: 1.6;
  color-scheme: light;
}

[data-theme="dark"] body,
body[data-theme="dark"] {
  color-scheme: dark;
}

.vertical-nav,
.external-nav {
  position: fixed;
  top: 50%;
  z-index: 20;
  transform: translateY(-50%);
}

.vertical-nav {
  left: 2.2rem;
}

.external-nav {
  right: 2.2rem;
  display: none;
}

.vertical-nav ul,
.external-nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.vertical-nav li,
.external-nav li {
  margin: 0.8rem 0;
}

.vertical-nav a,
.vertical-nav button,
.external-nav a,
.external-nav button {
  display: flex;
  align-items: center;
  gap: 0.48rem;
  width: var(--side-nav-width);
  padding: 0.44rem 0.68rem;
  border: 1px solid rgba(34, 75, 141, 0.18);
  border-radius: 999px;
  color: var(--accent-color);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 6px 18px rgba(20, 35, 55, 0.08);
  font-family: "Trebuchet MS", Arial, sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--transition-time) ease, background var(--transition-time) ease, border-color var(--transition-time) ease, box-shadow var(--transition-time) ease, transform var(--transition-time) ease;
}

.vertical-nav button,
.external-nav button {
  appearance: none;
}

.vertical-nav a:hover,
.vertical-nav a.is-active,
.vertical-nav button:hover,
.vertical-nav button:focus-visible,
.external-nav a:hover,
.external-nav button:hover,
.external-nav button:focus-visible {
  color: #fff;
  background: var(--accent-color);
  border-color: var(--accent-color);
  box-shadow: 0 8px 20px rgba(34, 75, 141, 0.2);
}

.vertical-nav a:hover,
.vertical-nav button:hover,
.vertical-nav button:focus-visible {
  transform: translateX(3px);
}

.external-nav a:hover,
.external-nav button:hover,
.external-nav button:focus-visible {
  transform: translateX(-3px);
}

.vertical-nav a.is-active {
  background: #0f2f63;
  border-color: #0f2f63;
  box-shadow: 0 6px 16px rgba(15, 47, 99, 0.22);
}

[data-theme="dark"] .vertical-nav a,
[data-theme="dark"] .vertical-nav button,
[data-theme="dark"] .external-nav a,
[data-theme="dark"] .external-nav button {
  background: rgba(17, 24, 39, 0.9);
  border-color: rgba(139, 183, 255, 0.22);
}

[data-theme="dark"] .vertical-nav a:hover,
[data-theme="dark"] .vertical-nav a.is-active,
[data-theme="dark"] .vertical-nav button:hover,
[data-theme="dark"] .vertical-nav button:focus-visible,
[data-theme="dark"] .external-nav a:hover,
[data-theme="dark"] .external-nav button:hover,
[data-theme="dark"] .external-nav button:focus-visible {
  color: #0f172a;
  background: var(--accent-color);
  border-color: var(--accent-color);
}

.side-icon,
.external-nav i {
  width: 1rem;
  text-align: center;
}

.copy-toast {
  position: fixed;
  right: 2.2rem;
  bottom: 2rem;
  z-index: 1001;
  padding: 0.55rem 0.8rem;
  border: 1px solid rgba(15, 47, 99, 0.18);
  border-radius: 999px;
  color: #fff;
  background: #0f2f63;
  box-shadow: 0 8px 20px rgba(15, 47, 99, 0.2);
  font-family: "Trebuchet MS", Arial, sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1;
  opacity: 0;
  pointer-events: none;
  transform: translateY(0.35rem);
  transition: opacity var(--transition-time) ease, transform var(--transition-time) ease;
}

.copy-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.copy-toast.is-preparing {
  transition: none;
}

.copy-toast.is-positioned {
  right: auto;
  bottom: auto;
  transform: translate(-50%, 0.35rem);
}

.copy-toast.is-positioned.is-visible {
  transform: translate(-50%, 0);
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.header-content {
  flex: 1;
}

.header-image img {
  width: 165px;
  height: 165px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  transition: transform var(--transition-time) ease, box-shadow var(--transition-time) ease;
}

.header-image img:hover {
  transform: scale(1.02);
  box-shadow: 0 5px 15px var(--shadow-color);
}

h1 {
  margin: 0 0 0.25rem;
  font-size: 2.2rem;
  font-weight: 500;
  letter-spacing: 0;
}

h2 {
  margin: 1.75rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 1.4rem;
  font-weight: 500;
  letter-spacing: 0;
}

.social-links-header {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin: 1.2rem 0 0;
}

.social-links-header a,
.social-links-header span,
.social-links-header button {
  color: var(--text-secondary);
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  text-decoration: none;
  font-weight: 400;
  cursor: pointer;
}

.social-links-header a:hover,
.social-links-header button:hover {
  color: var(--accent-color);
}

.social-links-header i {
  margin-right: 0.4rem;
  color: var(--accent-color);
}

section {
  width: 100%;
  margin-bottom: 2rem;
  scroll-margin-top: 1rem;
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color var(--transition-time) ease;
}

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

strong,
.highlight-name {
  color: var(--accent-color);
  font-weight: 600;
}

ul {
  padding-left: 1.25rem;
}

p {
  margin: 0.5rem 0 0.75rem;
}

.news-container {
  max-height: 300px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(34, 75, 141, 0.45) rgba(34, 75, 141, 0.08);
}

.news-container::-webkit-scrollbar {
  width: 8px;
}

.news-container::-webkit-scrollbar-track {
  background: rgba(34, 75, 141, 0.08);
  border-radius: 999px;
}

.news-container::-webkit-scrollbar-thumb {
  background: rgba(34, 75, 141, 0.45);
  border-radius: 999px;
}

.news-list {
  margin: 0.5rem 0;
  padding-left: 0;
  list-style-type: none;
}

.news-list li {
  margin-bottom: 0.9rem;
  padding-left: 0.9rem;
  padding-bottom: 0.7rem;
  border-left: 2px solid rgba(34, 75, 141, 0.2);
}

.publications-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.3rem;
}

.publications-header h2 {
  flex: 1;
  margin: 1.75rem 0 1rem;
}

.publication-item {
  display: grid;
  grid-template-columns: minmax(200px, 36%) minmax(0, 1fr);
  gap: 1.35rem;
  align-items: center;
  padding: 1.45rem 0;
  border-bottom: 1px solid var(--border-color);
}

.pub-thumbnail {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  background: #fff;
  box-shadow: 3px 3px 8px rgba(20, 35, 55, 0.22);
  cursor: zoom-in;
}

.pub-thumbnail img {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
  transition: transform var(--transition-time) ease;
}

.pub-thumbnail:hover img {
  transform: scale(1.025);
}

.pub-badge {
  position: absolute;
  top: 0.55rem;
  left: -0.45rem;
  z-index: 2;
  max-width: calc(100% - 0.8rem);
  padding: 0.25rem 0.7rem;
  color: #fff;
  background: #00369f;
  box-shadow: 0 4px 10px rgba(0, 34, 90, 0.22);
  font-family: "Trebuchet MS", Arial, sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1.15;
}

.pub-title {
  margin-bottom: 0.45rem;
  color: var(--text-color);
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.35;
}

.pub-title-icon {
  width: 1.35rem;
  height: 1.35rem;
  margin-right: 0.42rem;
  object-fit: contain;
  vertical-align: text-bottom;
}

.pub-meta {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.author-note {
  margin: -0.35rem 0 0.4rem;
  color: var(--text-secondary);
  font-size: 0.86rem;
}

.corresponding-marker {
  margin-left: 0.08rem;
  color: #8a3a00;
  font-size: 0.75em;
  font-weight: 700;
}

[data-theme="dark"] .corresponding-marker {
  color: #ffd8a8;
}

.pub-meta-separator {
  margin: 0 0.45rem;
  color: rgba(74, 85, 104, 0.62);
  font-weight: 700;
}

[data-theme="dark"] .pub-meta-separator {
  color: rgba(203, 213, 225, 0.62);
}

.pub-venue {
  font-style: italic;
}

.ccf-badge {
  display: inline-flex;
  align-items: center;
  margin-left: 0.5rem;
  padding: 0.12rem 0.38rem;
  border-radius: 4px;
  font-family: "Trebuchet MS", Arial, sans-serif;
  font-size: 0.72rem;
  font-style: normal;
  font-weight: 700;
  line-height: 1;
  vertical-align: 0.08rem;
}

.ccf-badge.ccf-a {
  color: #8a3a00;
  background: #fff1df;
  border: 1px solid #f6b15e;
}

.ccf-badge.ccf-b {
  color: #17633a;
  background: #e6f6ed;
  border: 1px solid #83d4a4;
}

[data-theme="dark"] .ccf-badge.ccf-a {
  color: #ffd8a8;
  background: rgba(245, 158, 11, 0.16);
  border-color: rgba(245, 158, 11, 0.45);
}

[data-theme="dark"] .ccf-badge.ccf-b {
  color: #b6f0ca;
  background: rgba(34, 197, 94, 0.14);
  border-color: rgba(34, 197, 94, 0.4);
}

.pub-award {
  display: inline-block;
  margin-top: 0.45rem;
  color: #b42318;
  font-weight: 700;
}

.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  font-size: 0.85rem;
}

.pub-links a,
.pub-links button {
  padding: 0.2rem 0.5rem;
  border: 0;
  border-radius: 999px;
  background: #edf4ff;
  color: var(--accent-color);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.pub-links a:hover,
.pub-links button:hover,
.pub-links button.is-copied {
  color: #fff;
  background: var(--accent-color);
}

.award-item {
  display: flex;
  align-items: baseline;
  margin-bottom: 0.1rem;
}

.award-year {
  flex: 0 0 80px;
  color: var(--accent-color);
  font-weight: 500;
}

.award-desc {
  flex: 1;
}

.service-title {
  margin-bottom: 0.35rem;
  color: var(--accent-color);
  font-weight: 500;
}

.service-category p,
.misc-item p {
  margin: 0.25rem 0 0.75rem;
}

footer {
  margin-top: 2.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-align: center;
}

.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  inset: 0;
  padding: 4rem 1.5rem;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.85);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.modal.show {
  opacity: 1;
}

.modal-content {
  display: block;
  max-width: 92%;
  max-height: 86vh;
  margin: auto;
  border-radius: 4px;
  background: #fff;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.modal-close {
  position: fixed;
  top: 1rem;
  right: 1.8rem;
  color: #fff;
  font-size: 2.2rem;
  cursor: pointer;
}

@media (min-width: 769px) and (max-width: 1359px) {
  body {
    max-width: calc(100vw - 16rem);
    margin-left: 13.8rem;
    margin-right: 2rem;
  }
}

@media (min-width: 1360px) {
  .vertical-nav {
    left: calc(50% - var(--content-half-width) - var(--side-nav-width) - var(--side-nav-gap));
  }

  .external-nav {
    position: fixed;
    top: 50%;
    right: calc(50% - var(--content-half-width) - var(--side-nav-width) - var(--side-nav-gap));
    z-index: 20;
    display: block;
    transform: translateY(-50%);
  }
}

@media (max-width: 768px) {
  body {
    padding-bottom: 4rem;
  }

  .vertical-nav {
    top: auto;
    right: 0.65rem;
    bottom: 0.65rem;
    left: 0.65rem;
    transform: none;
    padding: 0.42rem 0.35rem;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 8px 24px rgba(20, 35, 55, 0.14);
    backdrop-filter: blur(8px);
  }

  [data-theme="dark"] .vertical-nav {
    background: rgba(17, 24, 39, 0.94);
  }

  body::after {
    content: "";
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 19;
    height: 0.65rem;
    background: var(--bg-color);
    pointer-events: none;
  }

  .copy-toast {
    right: auto;
    bottom: 6.2rem;
    left: 50%;
    max-width: calc(100vw - 2rem);
    text-align: center;
    transform: translate(-50%, 0.35rem);
  }

  .copy-toast.is-visible {
    transform: translate(-50%, 0);
  }

  .vertical-nav ul {
    display: flex;
    gap: 0.15rem;
  }

  .vertical-nav li {
    flex: 1;
    margin: 0;
    min-width: 0;
  }

  .vertical-nav a,
  .vertical-nav button {
    flex-direction: column;
    width: 100%;
    min-width: 0;
    height: 3rem;
    padding: 0.32rem 0.1rem;
    justify-content: center;
    gap: 0.22rem;
    border: 0;
    background: transparent;
    box-shadow: none;
    font-size: 0.56rem;
  }

  .vertical-nav .side-icon {
    width: auto;
    font-size: 0.95rem;
  }

  .vertical-nav a:hover,
  .vertical-nav a.is-active,
  .vertical-nav button:hover,
  .vertical-nav button:focus-visible {
    color: #fff;
    background: var(--accent-color);
    box-shadow: none;
    transform: none;
  }

  .nav-label {
    display: block;
    max-width: 100%;
    overflow: hidden;
    line-height: 1;
    text-align: center;
    text-overflow: ellipsis;
  }

  header {
    flex-direction: column-reverse;
    align-items: center;
    text-align: center;
    gap: 1rem;
  }

  .social-links-header {
    justify-content: center;
  }

  .publication-item {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

}