/* ===== Base ===== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", -sans-serif;
    background-color: #f8f8f8;
    
    color: #111827;
    line-height: 1.7;
  }
  
  a {
    color: inherit;
    text-decoration: none;
  }
  
  img {
    max-width: 100%;
    display: block;
  }
  
  /* ===== Layout ===== */
  .page-wrapper {
    max-width: 960px;
    margin: 0 auto;
    padding: 32px 20px 48px;
  }
  
    /* Favorite quote on index */
  .page-quote {
    font-size: 13px;
    color: #6b7280;
    font-style: italic;
    margin-bottom: 22px;
  }

  .page-quote-author {
    font-size: 11px;
    color: #9ca3af;
  }
  
  /* Make content links blue but keep nav style */
  main a {
    color: #2563eb;
    text-decoration: none;
  }

  main a:hover {
    text-decoration: underline;
  }


  /* ===== Top Nav ===== */
  .navbar {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 32px;
    border-bottom: 1px solid #e5e7eb;
    padding-bottom: 16px;
  }
  
  .nav-left {
    font-size: 18px;
    font-weight: 500;
    letter-spacing: 0.02em;
  }
  
  .nav-subtitle {
    font-size: 12px;
    color: #9ca3af;
    margin-top: 2px;
  }
  
  .nav-links {
    display: flex;
    gap: 18px;
    font-size: 14px;
  }
  
  .nav-links a {
    padding-bottom: 4px;
    border-bottom: 1px solid transparent;
    color: #6b7280;
  }
  
  .nav-links a:hover {
    color: #111827;
    border-color: #d1d5db;
  }
  
  .nav-links a.active {
    color: #111827;
    border-color: #111827;
  }
  
  /* ===== Section Titles ===== */
  .page-title {
    font-size: 26px;
    font-weight: 500;
    margin-bottom: 8px;
  }
  
  .page-tagline {
    font-size: 13px;
    color: #6b7280;
    margin-bottom: 24px;
  }
  
  /* ===== About Page ===== */
  .about-intro {
    font-size: 15px;
    margin-bottom: 16px;
  }
  
  .highlight {
    color: #2563eb;       /* 柔和的 UCSD 蓝调 */
    font-weight: 500;     /* 中等粗体，清晰但不厚重 */

  }
  
  .about-grid {
    display: grid;
    grid-template-columns: 2fr 1.4fr;
    gap: 28px;
    margin-top: 12px;
  }
  
  .section-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: #9ca3af;
    margin-bottom: 4px;
  }
  
  .about-block {
    margin-bottom: 14px;
  }
  
  .about-list {
    list-style: none;
    font-size: 13px;
    color: #4b5563;
  }
  
  .about-list li + li {
    margin-top: 3px;
  }
  
  .tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 4px;
  }
  
  .tag {
    font-size: 10px;
    padding: 3px 7px;
    border-radius: 999px;
    border: 1px solid #e5e7eb;
    color: #4b5563;
  }
  
  /* ===== Research Page ===== */
  .research-list {
    margin-top: 12px;
  }
  
  .research-item {
    display: grid;
    grid-template-columns: 260px 1fr;   /* 左边区域更宽，让图放大 */
    gap: 22px;
    padding: 18px 0;
    border-bottom: 1px solid #f3f4f6;
  }
  
  .research-thumb {
    width: 100%;
    height: 170px;                     /* 高度明显加大 */
    object-fit: contain;               /* 不裁剪，整张图可见 */
    background-color: #f9fafb;
    padding: 8px;
    border-radius: 10px;
    border: 1px solid #e5e7eb;
    display: block;
  }
  
  
  
  .research-title {
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 4px;
  }
  
  .research-meta {
    font-size: 11px;
    color: #9ca3af;
    margin-bottom: 4px;
  }
  
  .research-desc {
    font-size: 13px;
    color: #4b5563;
  }
  
  /* ===== Blog Page ===== */
  .blog-list {
    margin-top: 12px;
  }
  
  .blog-card {
    padding: 12px 0;
    border-bottom: 1px solid #f3f4f6;
  }
  
  .blog-title {
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 2px;
  }
  
  .blog-meta {
    font-size: 11px;
    color: #9ca3af;
    margin-bottom: 4px;
  }
  
  .blog-excerpt {
    font-size: 13px;
    color: #4b5563;
  }
  
  /* ===== Hobbies Page ===== */
  .hobby-intro {
    font-size: 14px;
    color: #4b5563;
    margin-bottom: 14px;
  }
  
  .photo-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }
  
  .photo-placeholder {
    background-color: #f3f4f6;
    height: 90px;
    border-radius: 6px;
    font-size: 9px;
    color: #9ca3af;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  /* ===== Responsive ===== */
  @media (max-width: 720px) {
    .page-wrapper {
      padding: 20px 16px 32px;
    }
  
    .navbar {
      flex-direction: column;
      align-items: flex-start;
      gap: 6px;
    }
  
    .about-grid {
      grid-template-columns: 1fr;
    }
  
    .research-item {
      grid-template-columns: 1fr;
    }
  
    .photo-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
  }
  

  /* ===== Hobbies images ===== */

.photo-grid img {
    width: 100%;
    height: 110px;
    object-fit: cover;
    border-radius: 6px;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
  }
  
  .photo-grid img:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(15, 23, 42, 0.10);
    opacity: 0.96;
  }
  
  /* ===== Lightbox ===== */
  
  .lightbox-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.82);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 60;
  }
  
  .lightbox-backdrop.active {
    display: flex;
  }
  
  .lightbox-image {
    max-width: 92vw;
    max-height: 92vh;
    border-radius: 10px;
    box-shadow: 0 14px 40px rgba(15, 23, 42, 0.55);
  }
  
  .lightbox-caption {
    margin-top: 10px;
    font-size: 12px;
    color: #e5e7eb;
    text-align: center;
    max-width: 80vw;
  }
  
  .lightbox-close {
    position: fixed;
    top: 18px;
    right: 24px;
    font-size: 24px;
    color: #e5e7eb;
    cursor: pointer;
  }
  
/* ===== Hobbies: horizontal strips (Instagram-style) ===== */

.photo-strip {
  display: flex;
  gap: 10px;
  margin-top: 12px;
  padding-bottom: 4px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
}

.photo-strip img {
  height: 300px;              /* 统一高度，尺寸稍大一点 */
  width: auto;
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
  scroll-snap-align: start;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
}

.photo-strip img:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.16);
  opacity: 0.97;
}

/* 可选：让滚动条更低调一点 */
.photo-strip::-webkit-scrollbar {
  height: 4px;
}
.photo-strip::-webkit-scrollbar-track {
  background: transparent;
}
.photo-strip::-webkit-scrollbar-thumb {
  background: #e5e7eb;
  border-radius: 999px;
}

/* Lightbox（如果之前已经有，可以复用） */
.lightbox-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.82);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 60;
}

.lightbox-backdrop.active {
  display: flex;
}

.lightbox-image {
  max-width: 92vw;
  max-height: 92vh;
  border-radius: 10px;
  box-shadow: 0 14px 40px rgba(15, 23, 42, 0.55);
}

.lightbox-caption {
  margin-top: 10px;
  font-size: 12px;
  color: #e5e7eb;
  text-align: center;
  max-width: 80vw;
}

.lightbox-close {
  position: fixed;
  top: 18px;
  right: 24px;
  font-size: 24px;
  color: #e5e7eb;
  cursor: pointer;
}

@media (max-width: 720px) {
  .research-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .research-thumb {
    width: 100%;
    height: auto;
    max-height: 220px;
    padding: 6px;
  }
}