:root {
  --bg: #ffffff;
  --text: #222222;
  --muted: #555555;
  --light: #777777;
  --border: #dddddd;
  --soft-border: #eeeeee;
  --link: #0066cc;
  --link-hover: #004b96;
  --code: #f7f7f7;
  --container: 940px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Noto Sans", sans-serif;
  font-size: 16px;
  line-height: 1.62;
  background: var(--bg);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--soft-border);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
}

.navbar {
  display: flex;
  max-width: var(--container);
  min-height: 56px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 0 auto;
  padding: 0 18px;
}

.site-title {
  color: #222222;
  font-size: 1.15rem;
  font-weight: 400;
}

.site-title:hover {
  color: #222222;
  text-decoration: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.95rem;
}

.nav-links a {
  color: #555555;
}

.nav-links a:hover,
.nav-links a.is-active {
  color: #111111;
  text-decoration: none;
}

.page-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 44px 18px 28px;
}

.about-section {
  min-height: 320px;
}

.profile {
  float: right;
  width: 265px;
  margin: 0 0 24px 38px;
}

.profile img {
  display: block;
  width: 100%;
  border-radius: 6px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

.profile-caption {
  margin-top: 10px;
  color: var(--light);
  font-size: 0.9rem;
  line-height: 1.45;
  text-align: center;
}

.profile-caption p {
  margin: 0;
}

h1,
h2,
h3 {
  font-weight: 400;
  line-height: 1.25;
}

h1 {
  margin: 0 0 4px;
  font-size: 2.55rem;
}

h2 {
  margin: 0 0 18px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--soft-border);
  font-size: 1.7rem;
}

h3 {
  margin: 0 0 4px;
  font-size: 1.04rem;
  font-weight: 600;
}

p {
  margin: 0 0 16px;
}

.subtitle {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 1.08rem;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 24px;
}

.link-row a,
.paper-links a {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 4px 9px;
  color: #333333;
  font-size: 0.9rem;
  line-height: 1.3;
  background: #fafafa;
}

.link-row a:hover,
.paper-links a:hover {
  border-color: #b7b7b7;
  color: #111111;
  text-decoration: none;
  background: #f2f2f2;
}

.section-block {
  clear: both;
  margin-top: 42px;
}

.news-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.news-list li {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 18px;
  padding: 7px 0;
  border-bottom: 1px solid #f4f4f4;
}

.news-list p {
  margin-bottom: 0;
}

.date,
.pub-meta {
  color: var(--light);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.88rem;
  white-space: nowrap;
}

.publication-list {
  display: grid;
  gap: 22px;
}

.publication-item {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 18px;
  padding-bottom: 22px;
  border-bottom: 1px solid #f0f0f0;
}

.publication-item p {
  margin-bottom: 4px;
}

.venue {
  color: var(--muted);
  font-style: italic;
}

.paper-links {
  margin-top: 8px;
}

.timeline {
  display: grid;
  gap: 22px;
}

.timeline article {
  padding-bottom: 20px;
  border-bottom: 1px solid #f0f0f0;
}

.timeline .date {
  display: block;
  margin-bottom: 5px;
}

.subsection-title {
  margin-top: 32px;
}

.footer {
  max-width: var(--container);
  margin: 32px auto 0;
  padding: 22px 18px 36px;
  border-top: 1px solid var(--soft-border);
  color: var(--light);
  font-size: 0.9rem;
  text-align: center;
}

.footer p {
  margin: 0;
}

@media (max-width: 760px) {
  .navbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .nav-links {
    width: 100%;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .page-container {
    padding-top: 28px;
  }

  .profile {
    float: none;
    width: min(280px, 100%);
    margin: 0 auto 24px;
  }

  h1 {
    font-size: 2.2rem;
  }

  .news-list li,
  .publication-item {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}