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

body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #333;
  background: #fff;
}

a {
  color: #1a0dab;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 48px;
}

/* Navigation */
nav {
  margin-bottom: 48px;
  padding-bottom: 16px;
  border-bottom: 1px solid #e0e0e0;
  display: flex;
  justify-content: flex-end;
  align-items: baseline;
  gap: 28px;
}

nav a {
  color: #555;
  font-size: 21px;
}

nav a:hover {
  color: #111;
}

/* Hero section: photo left, name+contact right */
.hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 40px;
  padding-right: 10%;
}

.hero-photo {
  flex-shrink: 0;
}

.hero-photo img {
  width: 320px;
  height: 320px;
  object-fit: cover;
  border-radius: 8px;
}

.hero-info {
  padding-top: 16px;
}

.hero-info h1 {
  font-size: 36px;
  font-weight: 600;
  color: #111;
  margin-bottom: 16px;
}

.hero-info .contact {
  font-size: 19px;
  line-height: 2;
  color: #555;
}

.hero-info .contact a {
  color: #555;
}

.hero-info .contact a:hover {
  color: #1a0dab;
}

/* Bio below hero */
.bio {
  margin-bottom: 48px;
  font-size: 19px;
}

/* News section */
.section-title {
  font-size: 20px;
  font-weight: 600;
  color: #111;
  margin-bottom: 20px;
  padding-bottom: 8px;
  border-bottom: 1px solid #e0e0e0;
}

.news-list {
  list-style: none;
}

.news-list li {
  padding: 5px 0;
  font-size: 17px;
  line-height: 1.6;
}

/* Papers page */
.paper {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid #eee;
}

.paper:first-of-type {
  padding-top: 0;
}

.paper-thumb {
  flex-shrink: 0;
  width: 220px;
  height: 165px;
}

.paper-thumb img {
  width: 220px;
  height: 165px;
  object-fit: contain;
  border-radius: 4px;
  border: 1px solid #e0e0e0;
}

.paper-thumb .placeholder {
  width: 220px;
  height: 165px;
  background: #f0f0f0;
  border-radius: 4px;
  border: 1px solid #e0e0e0;
}

.paper-info {
  flex: 1;
  min-width: 0;
}

.paper-info .paper-title {
  font-size: 16px;
  font-weight: 600;
  color: #111;
  margin-bottom: 4px;
  line-height: 1.4;
}

.paper-info .authors {
  font-size: 14px;
  color: #555;
  margin-bottom: 4px;
}

.paper-info .venue {
  font-size: 14px;
  color: #888;
  font-style: italic;
  margin-bottom: 6px;
}

.paper-info .description {
  font-size: 14px;
  color: #444;
  margin-bottom: 6px;
  line-height: 1.5;
}

.paper-info .paper-links {
  display: flex;
  gap: 12px;
  font-size: 14px;
}

.paper-info .paper-links a {
  color: #1a0dab;
}

.year-heading {
  font-size: 18px;
  font-weight: 600;
  color: #111;
  margin-top: 32px;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 2px solid #e0e0e0;
}

.year-heading:first-of-type {
  margin-top: 0;
}

/* Notes/Blog page */
.post-list {
  list-style: none;
}

.post-list li {
  padding: 8px 0;
  border-bottom: 1px solid #f0f0f0;
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.post-list .post-date {
  color: #888;
  font-size: 14px;
  flex-shrink: 0;
  min-width: 90px;
}

.post-list .post-link {
  font-size: 15px;
}

/* Individual post page */
.post-header {
  margin-bottom: 32px;
}

.post-header h1 {
  font-size: 26px;
  font-weight: 600;
  color: #111;
  line-height: 1.3;
  margin-bottom: 8px;
}

.post-header .post-meta {
  color: #888;
  font-size: 14px;
}

.post-body {
  line-height: 1.75;
}

.post-body h2 {
  font-size: 20px;
  font-weight: 600;
  color: #111;
  margin-top: 32px;
  margin-bottom: 12px;
}

.post-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: #222;
  margin-top: 24px;
  margin-bottom: 8px;
}

.post-body p {
  margin-bottom: 16px;
}

.post-body code {
  font-family: "SF Mono", "Fira Code", "Fira Mono", Menlo, monospace;
  font-size: 14px;
  background: #f5f5f5;
  padding: 2px 6px;
  border-radius: 3px;
}

.post-body pre {
  background: #f5f5f5;
  padding: 16px;
  border-radius: 6px;
  overflow-x: auto;
  margin-bottom: 16px;
}

.post-body pre code {
  background: none;
  padding: 0;
}

.post-body .math {
  font-family: "Times New Roman", Times, serif;
  font-style: italic;
}

.post-body ul, .post-body ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.post-body li {
  margin-bottom: 4px;
}

.post-body blockquote {
  border-left: 3px solid #ddd;
  padding-left: 16px;
  color: #555;
  margin-bottom: 16px;
}

.back-link {
  display: inline-block;
  margin-bottom: 24px;
  font-size: 14px;
  color: #888;
}

.back-link:hover {
  color: #1a0dab;
}

/* Music page */
.music-intro {
  margin-bottom: 24px;
  color: #555;
  font-size: 15px;
}

.music-list {
  list-style: none;
}

.music-list li {
  padding: 6px 0;
  font-size: 15px;
  display: flex;
  align-items: baseline;
  gap: 16px;
  border-bottom: 1px solid #f5f5f5;
}

.music-list .music-date {
  color: #888;
  font-size: 13px;
  flex-shrink: 0;
  min-width: 110px;
}

.music-list .music-entry {
  color: #333;
}

/* Responsive */
@media (max-width: 600px) {
  .hero {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .hero-photo img {
    width: 220px;
    height: 220px;
  }

  .bio {
    text-align: center;
  }

  .paper {
    flex-direction: column;
  }

  .paper-thumb {
    width: 100%;
    height: auto;
  }

  .paper-thumb img,
  .paper-thumb .placeholder {
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;
  }

  .post-list li {
    flex-direction: column;
    gap: 2px;
  }

  .music-list li {
    flex-direction: column;
    gap: 2px;
  }

  nav {
    flex-wrap: wrap;
    gap: 12px 20px;
  }
}