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

body {
  font-family: 'Noto Sans', sans-serif;
  color:#333;
  background:#fff;
  -webkit-font-smoothing: antialiased;
}

/* ===== 字体层级统一 ===== */
h1, h2, h3 {
  font-family: 'DM Serif Display', serif;
  font-weight: 500;
  letter-spacing: 0.3px;
}

/* ===== 导航栏 ===== */
nav {
  position: fixed;
  top:0;
  width:100%;
  background: rgba(255,255,255,0.25);
  backdrop-filter: blur(12px);
  display: flex;
  justify-content: flex-end;
  padding:15px 60px;
  z-index:1000;
}

nav ul { list-style:none; display:flex; gap:40px; }

nav a {
  text-decoration:none;
  color:#222;
  font-weight:500;
  position:relative;
  transition:0.3s;
}

nav a::after {
  content:'';
  position:absolute;
  width:0;
  height:2px;
  left:0;
  bottom:-5px;
  background:#222;
  transition:width 0.3s;
}

nav a:hover::after,
nav a.active::after {
  width:100%;
}

/* ===== Home ===== */
.home-section {
  position:relative;
  height:100vh;
  overflow:hidden;
}

#intro-video {
  width:100%;
  height:100%;
  object-fit:cover;
}

.overlay {
  position:absolute;
  top:0; left:0;
  width:100%; height:100%;
  background: rgba(0,0,0,0.35);
  color:white;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  text-align:center;
  padding:0 20px;
}

/* 标题（核心视觉） */
.overlay h1 {
  font-size:4rem;
  margin-bottom:12px;
}

/* 副标题 */
.overlay p {
  font-size:1.3rem;
  max-width:700px;
  opacity:0.9;
}

/* 滚动提示 */
.scroll-down {
  margin-top:40px;
  font-size:1.2rem;
  animation:bounce 2s infinite;
  cursor:pointer;
}

@keyframes bounce {
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(8px);}
}

/* ===== About ===== */
.about-container {
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:40px;
  margin-top:40px;
}

.about-photo { flex: 0 0 180px; }

.about-photo img {
  width:100%;
  border-radius:6px;
}

.about-text {
  flex:1;
  font-size:1.05rem;
  line-height:1.8;
}

.about-text p {
  margin-bottom:20px;
}

.link {
  color:#0077cc;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:all 0.2s ease;
}

.link:hover {
  color:#005999;
  border-bottom:1px solid #005999;
}

/* ===== Profile icon links ===== */
.profile-links {
  display:flex;
  gap:12px;
  margin-top:14px;
}

.icon-link {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;
  height:40px;
  border-radius:50%;
  background:#f4f4f4;
  transition:transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.icon-link:hover {
  transform:translateY(-2px);
  background:#fff;
  box-shadow:0 4px 12px rgba(0,0,0,0.15);
}

.icon-link img {
  width:24px;
  height:24px;
}

.icon-link.rednote img {
  width:30px;
  height:30px;
}

/* ===== Exhibition ===== */
.project-grid.exhibition-grid {
  display: grid;
  grid-template-columns: 1fr !important;
  gap: 5px;                  
  padding: 0 0px;           
  max-width: none;           
  margin: 0;
}

.video-item iframe {
  width: 100%;
  height: 100%;
}

.video-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-grid.exhibition-grid .video-item {
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

/* 覆盖默认 4:3 */
.project-grid.exhibition-grid .project-item {
  aspect-ratio: 16 / 9;
  border-radius: 5px;
  overflow: hidden;
}

/* 视频填充 */
.project-grid.exhibition-grid video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(1);
  transition: all 0.5s ease;
}

/* 标题更大 */
.project-grid.exhibition-grid .project-title {
  font-size: 1.8rem;
  letter-spacing: 0.5px;
}



/* ===== 内容区 ===== */
.content-section {
  max-width:1100px;
  margin:0 auto;
  padding:120px 30px;
  display:none;
}

.content-section h2 {
  font-size:2.3rem;
  margin-bottom:50px;
  border-left:4px solid #222;
  padding-left:12px;
}

/* ===== 项目网格 ===== */
.project-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(380px,1fr));
  gap:24px;
}

.project-item {
  position:relative;
  width:100%;
  aspect-ratio:4 / 3;
  overflow:hidden;
  border-radius:6px;
  cursor:pointer;
}

.project-item img {
  width:100%;
  height:100%;
  object-fit:cover;
  transition: transform 0.5s ease;
}

/* hover 蒙层 */
.project-item .overlay {
  position:absolute;
  top:0; left:0;
  width:100%; height:100%;
  background: rgba(0,0,0,0);
  display:flex;
  align-items:center;
  justify-content:center;
  opacity:0;
  transition:all 0.4s ease;
}

.project-item:hover img {
  transform: scale(1.06);
}

.project-item:hover .overlay {
  background: rgba(0,0,0,0.55);
  opacity:1;
}

.project-title {
  font-size:1.5rem;
  color:white;
  text-align:center;
  opacity:0;
  transform: translateY(10px);
  transition:all 0.4s ease;
}

.project-item:hover .project-title {
  opacity:1;
  transform: translateY(0);
}

/* ===== 弹出层 ===== */
.modal {
  display:none;
  position:fixed;
  z-index:2000;
  left:0;
  top:0;
  width:100%;
  height:100%;
  background:#fff;
  overflow:auto;
}

.close {
  position:fixed;
  top:30px;
  right:50px;
  font-size:40px;
  cursor:pointer;
}

/* ===== Markdown 内容 ===== */
#modalMedia {
  display:flex;
  flex-direction:column;
}

:root {
  --margin_left_right: 22%;
}

@media (max-width: 1000px) {
  :root {
    --margin_left_right: 6%;
  }
}

/* H1 */
#modalMedia h1 {
  font-size:3rem;
  margin:40px var(--margin_left_right);
  text-align:center;
}

/* H2 */
#modalMedia h2 {
  font-size:2.2rem;
  margin:60px var(--margin_left_right) 20px;
  border-left:3px solid #aaa;
  padding-left:12px;
}

/* H3 */
#modalMedia h3 {
  font-size:1.4rem;
  margin:30px var(--margin_left_right) 15px;
  color:#444;
}

/* 正文 */
#modalMedia p {
  font-size:0.9rem;
  line-height:1.6;
  margin:10px var(--margin_left_right);
  text-align:left;
}

/* 图片 */
#modalMedia img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 30px auto;
}

/* 视频 iframe：统一左右留白 */
#modalMedia iframe {
  width: calc(100% - 2 * var(--margin_left_right));
  margin: 20px var(--margin_left_right);
  aspect-ratio: 16 / 9;
  display: block;
  /* 去掉“框感” */
  border: none;
  border-radius: 0;
  box-shadow: none;
}




/* ===== Publication ===== */
.publication-list {
  display:flex;
  flex-direction:column;
  gap:44px;
}

.publication-item {
  display:flex;
  gap:28px;
  align-items:flex-start;
}

.publication-thumb {
  flex:0 0 240px;
  display:block;
}

.publication-thumb img {
  display:block;
  width:100%;
  height:auto;
  border-radius:6px;
  background:#f4f4f4;
  transition:transform 0.3s ease;
}

.publication-thumb:hover img {
  transform:scale(1.02);
}

.publication-body {
  flex:1;
  min-width:0;
}

.publication-body h3 {
  font-size:1.15rem;
  line-height:1.45;
  margin-bottom:8px;
}

.pub-bullet {
  margin-right:8px;
  color:#c0392b;
}

.publication-authors {
  font-size:0.92rem;
  color:#444;
  line-height:1.55;
}

.publication-venue {
  margin:4px 0 8px;
  font-size:0.9rem;
  font-style:italic;
  color:#777;
}

.publication-links a {
  margin-right:14px;
  font-size:0.85rem;
  color:#0077cc;
  text-decoration:none;
}

.publication-links a:hover {
  text-decoration:underline;
}

.publication-abstract {
  margin-top:10px;
  line-height:1.7;
}

@media (max-width:820px) {
  .publication-item {
    flex-direction:column;
    gap:14px;
  }

  .publication-thumb {
    flex:none;
    width:100%;
    max-width:360px;
  }
}


/* ===== About 重构 ===== */
.about-layout {
  display:grid;
  grid-template-columns:240px 1fr;
  gap:64px;
  align-items:start;
}

.about-sidebar {
  position:sticky;
  top:110px;
}

.about-avatar {
  display:block;
  width:100%;
  border-radius:10px;
}

.about-name {
  margin:18px 0 6px;
  font-size:1.45rem;
}

.about-role {
  margin-bottom:10px;
  color:#666;
  font-size:0.92rem;
  line-height:1.65;
}

.about-email {
  display:inline-block;
  color:#0077cc;
  font-size:0.88rem;
  text-decoration:none;
  word-break:break-all;
}

.about-email:hover {
  text-decoration:underline;
}

.about-main {
  max-width:720px;
}

.about-bio {
  margin-bottom:18px;
  color:#333;
  font-size:1rem;
  line-height:1.9;
}

.about-bio-en {
  color:#555;
  font-size:0.95rem;
}

.about-block {
  margin-top:34px;
}

.about-block-title {
  margin-bottom:14px;
  color:#111;
  font-size:1rem;
  letter-spacing:0.02em;
}

.tag-list {
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}

.tag {
  display:inline-block;
  padding:6px 13px;
  border-radius:999px;
  background:#f2f2f2;
  color:#444;
  font-size:0.85rem;
}

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

.edu-list li {
  display:flex;
  gap:20px;
  padding:12px 0;
  border-top:1px solid #eee;
}

.edu-list li:first-child {
  border-top:none;
}

.edu-years {
  flex:0 0 110px;
  padding-top:2px;
  color:#888;
  font-size:0.85rem;
}

.edu-detail {
  font-size:0.95rem;
  line-height:1.6;
}

/* ===== Works 重构 ===== */
.works-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:44px 28px;
}

.work-card {
  position:relative;
}

.work-media {
  position:relative;
  aspect-ratio:16 / 9;
  overflow:hidden;
  border-radius:8px;
  background:#f2f2f2;
}

.work-media img {
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform 0.6s ease;
}

.work-card.has-detail {
  cursor:pointer;
}

.work-card.has-detail:hover .work-media img {
  transform:scale(1.04);
}

.work-media iframe {
  display:block;
  width:100%;
  height:100%;
  border:none;
}

.work-info {
  padding-top:14px;
}

.work-kicker {
  margin-bottom:6px;
  color:#999;
  font-size:0.74rem;
  letter-spacing:0.08em;
  text-transform:uppercase;
}

.work-info h3 {
  margin-bottom:4px;
  font-size:1.2rem;
}

.work-en {
  color:#666;
  font-size:0.9rem;
  line-height:1.55;
}

.work-more {
  display:inline-block;
  margin-top:10px;
  color:#0077cc;
  font-size:0.85rem;
  opacity:0;
  transition:opacity 0.3s ease;
}

.work-card.has-detail:hover .work-more {
  opacity:1;
}

.work-play {
  position:absolute;
  right:14px;
  bottom:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border:none;
  border-radius:50%;
  background:rgba(255,255,255,0.92);
  cursor:pointer;
  transition:transform 0.2s ease, background 0.2s ease;
}

.work-play svg {
  width:20px;
  height:20px;
  margin-left:2px;
  fill:#111;
}

.work-play:hover {
  transform:scale(1.08);
  background:#fff;
}

.work-close {
  position:absolute;
  top:12px;
  right:12px;
  width:34px;
  height:34px;
  border:none;
  border-radius:50%;
  background:rgba(0,0,0,0.6);
  color:#fff;
  font-size:20px;
  line-height:1;
  cursor:pointer;
}

/* 首个作品通栏展示 */
.work-featured {
  grid-column:1 / -1;
  display:grid;
  grid-template-columns:1.6fr 1fr;
  gap:36px;
  align-items:center;
}

.work-featured .work-info {
  padding-top:0;
}

.work-featured .work-info h3 {
  font-size:1.6rem;
}

.work-featured .work-en {
  font-size:0.95rem;
}

@media (max-width:820px) {
  nav {
    padding:12px 20px;
  }

  nav ul {
    gap:24px;
  }

  nav a {
    font-size:0.9rem;
  }

  .about-layout {
    grid-template-columns:1fr;
    gap:32px;
  }

  .about-sidebar {
    position:static;
    max-width:220px;
  }

  .works-grid {
    grid-template-columns:1fr;
    gap:32px;
  }

  .work-featured {
    grid-template-columns:1fr;
    gap:18px;
  }

  .work-featured .work-info {
    padding-top:14px;
  }
}

/* ===== Footer ===== */
.footer {
  background: #111;
  color: #eee;
  padding: 60px 30px 30px;
  margin-top: 120px;
}

.footer-container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.footer-col h3 {
  font-family: 'DM Serif Display', serif;
  margin-bottom: 15px;
  font-size: 1.2rem;
}

.footer-col p {
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 6px;
}

.footer a {
  color: #ccc;
  text-decoration: none;
  transition: 0.2s;
}

.footer a:hover {
  color: #fff;
}

.footer-bottom {
  text-align: center;
  margin-top: 40px;
  font-size: 0.8rem;
  color: #777;
}