:root {
  --bg: #fbfcfe;
  --surface: #ffffff;
  --ink: #07172f;
  --text: #273244;
  --muted: #667085;
  --line: #d8dde6;
  --line-strong: #c5ccd8;
  --accent: #1457b6;
  --accent-dark: #0b3474;
  --accent-soft: #eaf1fb;
  --shadow: 0 18px 45px rgba(7, 23, 47, 0.08);
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --container: 960px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 75% 8%, rgba(20, 87, 182, 0.05), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.58;
}

body::selection {
  background: var(--accent-soft);
  color: var(--ink);
}

a {
  color: var(--accent);
  text-decoration: none;
  text-underline-offset: 0.22em;
}

a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
}

a:focus-visible {
  outline: 3px solid rgba(20, 87, 182, 0.28);
  outline-offset: 4px;
  border-radius: 4px;
}

img {
  display: block;
  max-width: 100%;
}

.container {
  width: min(var(--container), calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 64px;
}

.brand {
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.35rem, 1.7vw, 1.7rem);
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}

.brand:hover {
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: clamp(12px, 2.2vw, 26px);
}

.nav-links a {
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.2;
}

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

.section {
  padding: 62px 0;
  scroll-margin-top: 78px;
}

.section-compact {
  padding: 48px 0;
}

.section-heading {
  margin-bottom: 24px;
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.section-heading h2 {
  position: relative;
  width: max-content;
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.55rem, 2.3vw, 2.15rem);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.05;
}

.section-heading h2::after {
  content: "";
  display: block;
  width: 38px;
  height: 2px;
  margin-top: 8px;
  background: var(--accent);
}

.section-heading p {
  max-width: 760px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(270px, 0.72fr);
  align-items: center;
  gap: clamp(34px, 6vw, 68px);
  min-height: 0;
  padding-top: 52px;
  padding-bottom: 56px;
}

.hero h1 {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(2.15rem, 4.2vw, 3.35rem);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 0.95;
}

.role {
  margin: 16px 0 0;
  color: #173f7d;
  font-size: clamp(1.05rem, 1.8vw, 1.42rem);
  font-weight: 500;
  line-height: 1.25;
}

.short-rule {
  width: 58px;
  height: 1px;
  margin: 22px 0 22px;
  background: var(--ink);
  opacity: 0.55;
}

.intro {
  max-width: 560px;
  margin: 0;
  color: var(--text);
  font-size: clamp(0.95rem, 1.2vw, 1.05rem);
  line-height: 1.75;
  hyphens: auto;
  text-align: justify;
  text-align-last: left;
}

.profile-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 30px;
}

.profile-links a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 36px;
  padding: 0 20px;
  border-right: 1px solid var(--line);
  color: var(--accent-dark);
  font-weight: 600;
}

.profile-links a:first-child {
  padding-left: 0;
}

.profile-links a:last-child {
  border-right: 0;
}

.link-icon {
  display: inline-grid;
  width: 21px;
  height: 21px;
  place-items: center;
  color: var(--accent-dark);
}

.link-icon svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.link-icon path {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.link-icon.filled path {
  fill: currentColor;
  stroke: none;
}

.portrait-frame {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.portrait-frame img {
  width: 100%;
  aspect-ratio: 4 / 4.6;
  object-fit: cover;
}

.compact-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.compact-list li {
  display: grid;
  grid-template-columns: minmax(115px, 170px) minmax(0, 1fr);
  gap: 20px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.compact-list time {
  color: var(--ink);
  font-weight: 600;
  white-space: nowrap;
}

.compact-list span {
  min-width: 0;
}

.compact-list-small li {
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  padding: 10px 0;
}

.compact-list-small time {
  color: var(--accent);
}

.publication-list {
  border-top: 1px solid var(--line);
}

.publication {
  display: grid;
  grid-template-columns: minmax(220px, 340px) minmax(0, 1fr);
  gap: clamp(22px, 4vw, 38px);
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.publication-image {
  display: block;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--surface);
  box-shadow: 0 10px 22px rgba(7, 23, 47, 0.07);
}

.publication-image:hover {
  border-color: rgba(20, 87, 182, 0.45);
  text-decoration: none;
}

.publication-image img {
  width: 100%;
  aspect-ratio: 16 / 7.4;
  background: #fff;
  object-fit: contain;
  object-position: center;
}

.publication h3 {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.08rem, 1.45vw, 1.28rem);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.18;
}

.education-main h3 {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(1.25rem, 1.8vw, 1.55rem);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.18;
}

.authors {
  margin: 10px 0 0;
  color: #40506a;
}

.authors strong {
  color: var(--accent);
}

.venue {
  margin: 6px 0 0;
  color: #3b4658;
  font-size: 0.95rem;
  font-style: italic;
}

.publication-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 14px;
}

.publication-links a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 18px;
  color: var(--accent);
  font-weight: 600;
}

.publication-links a:first-child {
  padding-left: 0;
}

.publication-links a:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  width: 1px;
  height: 18px;
  background: var(--line-strong);
}

.education-list {
  border-top: 1px solid var(--line);
}

.education-item {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr) minmax(170px, 220px);
  gap: clamp(20px, 4vw, 42px);
  align-items: center;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.school-mark {
  display: grid;
  min-height: 112px;
  place-items: center;
  border: 1px solid rgba(20, 87, 182, 0.34);
  border-radius: 8px;
  background: var(--surface);
}

.school-mark img {
  width: 82px;
  height: 82px;
  object-fit: contain;
}

.degree {
  margin: 8px 0 0;
  color: var(--accent);
  font-size: 0.98rem;
  font-weight: 600;
}

.education-main p:not(.degree) {
  margin: 7px 0 0;
  color: var(--text);
}

.education-meta {
  min-height: 92px;
  padding-left: clamp(18px, 3vw, 34px);
  border-left: 1px solid var(--line-strong);
}

.education-meta time {
  display: block;
  color: var(--accent);
  font-size: 1rem;
  font-weight: 600;
}

.education-meta span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 24px 0;
  color: var(--muted);
}

.footer-inner {
  display: flex;
  justify-content: center;
  gap: 32px;
  text-align: center;
}

.footer-inner p {
  margin: 0;
}

.footer-inner p + p {
  position: relative;
}

.footer-inner p + p::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 50%;
  width: 1px;
  height: 18px;
  transform: translateY(-50%);
  background: var(--line-strong);
}

@media (max-width: 900px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 14px 0;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 40px;
  }

  .portrait-frame {
    max-width: 300px;
    order: -1;
  }

  .publication,
  .education-item {
    grid-template-columns: 1fr;
  }

  .education-item {
    gap: 18px;
  }

  .school-mark {
    width: 126px;
  }

  .education-meta {
    min-height: auto;
    padding-left: 0;
    border-left: 0;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .site-header {
    position: static;
  }

  .nav-links {
    justify-content: flex-start;
    gap: 10px 16px;
  }

  .nav-links a {
    font-size: 0.86rem;
  }

  .section,
  .section-compact {
    padding: 42px 0;
    scroll-margin-top: 20px;
  }

  .hero {
    padding-top: 30px;
    padding-bottom: 40px;
  }

  .portrait-frame {
    max-width: 220px;
  }

  .profile-links {
    align-items: stretch;
    flex-direction: column;
    margin-top: 26px;
    border-top: 1px solid var(--line);
  }

  .intro {
    hyphens: manual;
    text-align: left;
  }

  .profile-links a {
    justify-content: flex-start;
    padding: 10px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .compact-list li,
  .compact-list-small li {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 11px 0;
  }

  .publication {
    padding: 20px 0;
  }

  .publication-links a {
    padding: 0 14px;
  }

  .publication-links a:first-child {
    padding-left: 0;
  }

  .school-mark {
    width: 112px;
    min-height: 100px;
  }

  .school-mark img {
    width: 74px;
    height: 74px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 6px;
  }

  .footer-inner p + p::before {
    display: none;
  }
}