@import url('https://fonts.googleapis.com/css2?family=Sora:wght@600;700&display=swap');

/* 全局样式 */
:root {
  --primary-color: #e36a25;
  --text-color: #1E1F24;
  --background-color: #d3d3d3;
  --secondary-color: #f5f5f5;
  --card-bg: #FFFFFF;
  --card-shadow: rgba(0, 0, 0, 0.05);
  --link-color: #666666;
  --link-hover-color: #3C56F4;
}

html {
  scrollbar-gutter: stable;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  margin: 0;
  padding: 0;
  background: #fff;
}

h1, h2, h3, h4, h5, h6 {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-weight: 600;
  margin: 0;
  line-height: 1.3;
}

/* 头部样式 */
.header-container {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-top: 60px;
  padding: 40px 0;
  background: #000000;
  --spot-x: 50%;
  --spot-y: 50%;
  --spot-size: 350px;
  user-select: none;
  -webkit-user-select: none;
}

.header-mask-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: url('images/bkg.png');
  background-color: #000000;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: opacity 0.25s ease;
  overflow: hidden;
}

.header-pattern {
  position: absolute;
  inset: -20%;
  display: flex;
  flex-direction: column;
  gap: 24px;
  pointer-events: none;
  transform: translate3d(var(--pattern-x, 0px), var(--pattern-y, 0px), 0);
  transition: transform 0.2s ease;
  z-index: 0;
}

.header-pattern-base {
  z-index: 1;
}

.header-pattern-row {
  display: flex;
  gap: 36px;
  white-space: nowrap;
}

.header-pattern-text {
  font-size: clamp(72px, 2.4vw, 172px);
  letter-spacing: 0.35em;
  color: rgba(255, 255, 255, 0.06);
  font-weight: 700;
}

.header-pattern-base .header-pattern-text {
  color: rgba(200, 200, 200, 0.06);
}

.header-container.header-pattern-dragging {
  cursor: grabbing;
}

.header-container.header-spotlight-active {
  cursor: grab;
}

.header-container.header-spotlight-active .header-content-masked .header-image {
  opacity: 1;
  transform: translateY(0);
}

.header-container.header-spotlight-active .header-mask-layer {
  opacity: 1;
  pointer-events: auto;
}

.header-container.header-motion-off .header-mask-layer {
  opacity: 0;
  pointer-events: none;
}

/* Circle mask open/close animation */
.header-mask-layer.header-mask-layer--circle {
  transition: clip-path 0.35s ease-out;
  -webkit-transition: -webkit-clip-path 0.35s ease-out;
}

/* Disable opacity transition when hiding mask at end of close (avoids flash) */
.header-mask-layer.header-mask-layer--closing {
  transition: none;
  -webkit-transition: none;
}

/* Wavy circle animation: no CSS transition, path is updated in JS every frame */
.header-mask-layer.header-mask-layer--wavy {
  transition: none;
  -webkit-transition: none;
}

.header-motion-controls {
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 5;
}

.header-motion-toggle {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(0, 0, 0, 0.55);
  color: #f5f5f5;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
}

.header-motion-toggle:hover {
  background: rgba(0, 0, 0, 0.7);
}

.header-motion-hint {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 12px;
  background: #000000;
  border-radius: 6px;
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.02em;
  user-select: none;
  pointer-events: none;
  z-index: 5;
}

.header-motion-hint-top {
  top: 18px;
}

.header-motion-hint-bottom {
  bottom: 18px;
}

/* When mask/spotlight is active: yellow background, black text */
.header-container.header-spotlight-active .header-motion-hint {
  background: #f5e642;
  color: #000000;
}

.header-container .header-text {
  color: #f5f5f5;
}

.header-container .header-title,
.header-container .header-subtitle,
.header-container .header-description,
.header-container .header-description a,
.header-container .header-link {
  color: #f5f5f5;
  font-weight: 350;
}

.header-content-masked .header-title,
.header-content-masked .header-subtitle,
.header-content-masked .header-description,
.header-content-masked .header-description a,
.header-content-masked .header-link {
  color: #4a2a04;
  font-weight: 350;
}

.header-subtitle {
  color: rgba(245, 245, 245, 0.85);
}

.header-description {
  color: rgba(245, 245, 245, 0.78);
}

.header-content-masked .header-link:hover {
  color: #0b0b0b;
}

/* 可选：如果需要更柔和的混合效果，可以使用伪元素叠加
.header-background::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 228, 196, 0.4);
  z-index: 1;
} */

.header-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  width: 90%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  flex: 1;
  min-height: 0;
}

.header-content-stack {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  z-index: 2;
}

.header-content-base {
  position: relative;
}

.header-content-masked {
  position: relative;
  z-index: 1;
}

.header-text {
  flex: 1;
  max-width: 600px;
}

.header-title {
  font-family: 'Sora', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.header-subtitle {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 2rem;
  line-height: 1.5;
  color: rgba(30, 31, 36, 0.8);
}

.header-description {
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 2rem;
  color: rgba(30, 31, 36, 0.7);
}

.header-links {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
}

.header-link {
  color: #6b3b6b;
  text-decoration: none;
  font-size: 1.1rem;
  position: relative;
  padding: 0.5rem 0;
  transition: color 0.3s ease;
}

.header-link:hover {
  color: #f0f0f0;
}

.header-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--link-hover-color);
  transition: width 0.3s ease;
}

.header-link:hover::after {
  width: 100%;
}

.header-image {
  flex: 1;
  max-width: 500px;
  margin-left: 60px;
  align-items: center;
  justify-content: center;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.header-content-masked .header-image {
  opacity: 0;
}

/* Default layer (dark version) is visible; masked layer images show only when spotlight is active */
.header-content-base .header-image {
  opacity: 1;
  transform: translateY(0);
}

.image-center {
  width: 100%;
  height: auto;
  border-radius: 24px;
  margin: 0 auto;
  display: block;
}
.header-image img {
  width: 100%;
  height: auto;
  border-radius: 24px;
  margin: 0 auto;
  display: block;
}

.header-image img:hover {
  transform: scale(1.02);
}

.header-image img[alt="research interests"] {
  box-shadow: none !important;
  width: 100%;
  max-width: 800px;
  margin-top: 18px;
  margin-bottom: 0;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

/* Landscape: scale header photos (2755 and interests) 1.3x, shift right */
@media (orientation: landscape) {
  .header-container .header-image {
    margin-left: 130px;
  }
  .header-container .header-image img {
    transform: scale(1.3);
    transform-origin: center center;
  }
  .header-container .header-image img:last-of-type {
    margin-top: 48px;
  }
  .header-container .header-image img:hover {
    transform: scale(1.326);
  }
}

.header-research-interests {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1200px;
  padding: 0 10px 0px 10px;
  margin-top: auto;
  text-align: center;
}

.research-interests-text {
  font-size: 1.1rem;
  line-height: 1.8;
  color: rgba(30, 31, 36, 0.85);
  margin: 0;
  font-style: italic;
}

.research-interests-text strong {
  color: "#000000";
  font-weight: 600;
  font-style: normal;
}

.header-bottom-image {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1200px;
  padding: 0 40px 20px 40px;
  margin-bottom: 20px;
}

.header-bottom-image .image-center {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 24px;
  margin: 0 auto;
}

/* 横屏时显示横版图片，竖屏时显示竖版图片 */
.header-bottom-image .image-landscape {
  display: block;
}

.header-bottom-image .image-portrait {
  display: none !important;
}

/* Portrait (vertical screen): height > width.
   - Header layout: compact padding, portrait image shown.
   - Motion toggle and double-click hint hidden (JS turns motion off on init and on orientation/resize).
   - Representative Works: no carousel, vertical list (no scroll cards). */
@media (orientation: portrait) {
  .header-container {
    min-height: auto;
    padding: 20px 20px 40px 20px;
  }

  .header-motion-controls,
  .header-motion-hint {
    display: none !important;
  }

  .header-content {
    padding: 0 20px;
    margin-bottom: 20px;
  }

  .header-research-interests {
    padding: 0 20px 20px 20px;
    margin-bottom: 20px;
  }

  .header-bottom-image {
    padding: 0 20px 20px 20px;
  }

  .header-bottom-image .image-landscape {
    display: none !important;
  }
  
  .header-bottom-image .image-portrait {
    display: block !important;
  }

  /* Representative Works: vertical list, no carousel */
  .works-carousel-prev,
  .works-carousel-next,
  .works-carousel-nav {
    display: none !important;
  }
  .works-carousel-stage {
    overflow: visible;
  }
  .works-carousel-track {
    flex-direction: column;
    align-items: center;
    gap: 24px;
    transform: none !important;
  }
  .works-carousel .works-card {
    width: 100%;
    max-width: 360px;
    transform: none !important;
  }
  .works-carousel .works-card-inner {
    width: 100%;
  }
  .works-carousel .works-card-abstract {
    display: none !important;
  }
  .works-carousel .works-card.is-expanded {
    width: 100%;
    max-width: 360px;
    display: flex;
    flex-direction: column;
  }
}

/* Fallback for portrait: max-aspect-ratio 1/1 (height >= width).
   Same layout as orientation: portrait for browsers that support aspect-ratio but not orientation. */
@media (max-aspect-ratio: 1/1) {
  .header-container {
    min-height: auto;
    padding: 20px 20px 40px 20px;
  }

  .header-motion-controls,
  .header-motion-hint {
    display: none !important;
  }

  .header-content {
    padding: 0 20px;
    margin-bottom: 20px;
  }

  .header-research-interests {
    padding: 0 20px 20px 20px;
    margin-bottom: 20px;
  }

  .header-bottom-image {
    padding: 0 20px 20px 20px;
  }

  .header-bottom-image .image-landscape {
    display: none !important;
  }
  
  .header-bottom-image .image-portrait {
    display: block !important;
  }

  /* Representative Works: vertical list, no carousel */
  .works-carousel-prev,
  .works-carousel-next,
  .works-carousel-nav {
    display: none !important;
  }
  .works-carousel-stage {
    overflow: visible;
  }
  .works-carousel-track {
    flex-direction: column;
    align-items: center;
    gap: 24px;
    transform: none !important;
  }
  .works-carousel .works-card {
    width: 100%;
    max-width: 360px;
    transform: none !important;
  }
  .works-carousel .works-card-inner {
    width: 100%;
  }
  .works-carousel .works-card-abstract {
    display: none !important;
  }
  .works-carousel .works-card.is-expanded {
    width: 100%;
    max-width: 360px;
    display: flex;
    flex-direction: column;
  }
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .header-container {
    min-height: auto;
    padding: 20px 20px;
  }

  .header-content {
    flex-direction: column;
    text-align: center;
    padding: 40px 20px;
    flex: 0 0 auto;
    margin-bottom: 20px;
  }

  .header-text {
    margin-bottom: 40px;
  }

  .header-image {
    margin-left: 0;
    max-width: 500px;
    padding-bottom: 20px;
  }

  .header-research-interests {
    padding: 0 20px 15px 20px;
    margin-bottom: 15px;
  }

  .research-interests-text {
    font-size: 1rem;
  }

  .header-bottom-image {
    padding: 0 20px 20px 20px;
    margin-bottom: 20px;
  }

  .header-title {
    font-size: 2.5rem;
  }

  .header-subtitle {
    font-size: 1.2rem;
  }
}

@media (max-width: 768px) {
  .header-container {
    min-height: auto;
    padding: 15px 15px 30px 15px;
  }

  .header-content {
    padding: 20px 15px;
    margin-bottom: 15px;
  }

  .header-research-interests {
    padding: 0 15px 10px 15px;
    margin-bottom: 10px;
  }

  .research-interests-text {
    font-size: 0.95rem;
    line-height: 1.6;
  }

  .header-bottom-image {
    padding: 0 15px 15px 15px;
    margin-bottom: 15px;
  }

  .header-title {
    font-size: 2rem;
  }

  .header-subtitle {
    font-size: 1rem;
  }

  .header-description {
    font-size: 0.9rem;
  }
}

/* 图片hover效果 */
.image-container {
  position: relative;
  width: 100%;
  max-width: 420px;
  border-radius: 18px;
  overflow: hidden;
  background: transparent;
  box-shadow: none;
  border: none;
  min-width: 320px;
  flex-shrink: 0;
}
.image-container::before {
  content: '';
  display: block;
  padding-top: 56.25%; /* 16:9 */
}
.image-default,
.image-hover {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: opacity 0.3s;
  box-shadow: none;
  border: none;
  display: block;
  background: transparent;
}

.image-hover {
  opacity: 0;
  z-index: 2;
}

.image-container:hover .image-hover {
  opacity: 1;
}
.image-container:hover .image-default {
  opacity: 0;
}

/* 作者名字样式 */
.author-name {
  font-weight: 700;
  color: #000;
}

/* Representative Works 部分 */
.works-section {
  width: 100%;
  padding: 72px 0 100px;
  overflow: hidden;
  background: linear-gradient(180deg, #000000 0%, #080810 50%, #000000 100%);
}

.section-header {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px 32px;
  position: relative;
  z-index: 11;
}

.section-header:not(.section-header--dark) .section-sub {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: rgba(0, 0, 0, 0.5);
  margin-bottom: 8px;
  text-align: left;
}

.section-header:not(.section-header--dark) .section-title {
  font-family: 'Sora', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: #111;
  text-align: left;
  margin: 0 0 2rem 0;
}

.section-header--dark .section-sub {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 8px;
  text-align: left;
}

.section-header--dark .section-title {
  font-family: 'Sora', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: #ffffff;
  text-align: left;
  margin: 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 2rem;
  color: #333;
  text-align: center;
}

.works-carousel {
  position: relative;
  width: 100%;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding: 0 24px 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.works-carousel-stage {
  perspective: 1800px;
  min-height: 520px;
  position: relative;
  cursor: grab;
  user-select: none;
  width: 100%;
  overflow: visible;
}

.works-carousel-stage:active {
  cursor: grabbing;
}

.works-carousel-track {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 16px;
  min-height: 520px;
  transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  transform-style: preserve-3d;
}

.works-carousel-track.is-dragging {
  transition: none;
}

.works-card {
  flex-shrink: 0;
  width: 480px;
  height: 560px;
  cursor: pointer;
  display: flex;
  flex-direction: row;
  transition: width 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    opacity 0.45s ease,
    box-shadow 0.45s ease,
    filter 0.45s ease;
  border-radius: 18px;
  overflow: hidden;
  background: #1a1a1a;
  position: relative;
  transform-style: preserve-3d;
  backface-visibility: hidden;
}

.works-card.is-expanded {
  width: 1060px;
  cursor: default;
  z-index: 10;
}

.works-card-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  flex-shrink: 0;
  width: 480px;
}

.works-card.is-expanded .works-card-inner {
  width: 480px;
}

/* Center: pulled-out photo */
.works-card.works-card--center {
  transform: rotateY(0deg) translateZ(60px) scale(1.06);
  opacity: 1;
  z-index: 3;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.5);
  filter: brightness(1.02);
}

/* One step left */
.works-card.works-card--left-1 {
  transform: rotateY(36deg) translateZ(-25px) scale(0.92);
  opacity: 0.82;
  z-index: 2;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

/* One step right */
.works-card.works-card--right-1 {
  transform: rotateY(-36deg) translateZ(-25px) scale(0.92);
  opacity: 0.82;
  z-index: 2;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

/* Two steps left */
.works-card.works-card--left-2 {
  transform: rotateY(52deg) translateZ(-60px) scale(0.82);
  opacity: 0.45;
  z-index: 1;
  pointer-events: none;
}

/* Two steps right */
.works-card.works-card--right-2 {
  transform: rotateY(-52deg) translateZ(-60px) scale(0.82);
  opacity: 0.45;
  z-index: 1;
  pointer-events: none;
}

/* Farther: recede into stack */
.works-card.works-card--far {
  transform: rotateY(62deg) translateZ(-95px) scale(0.72);
  opacity: 0.22;
  z-index: 0;
  pointer-events: none;
}

.works-card.works-card--far.works-card--right-far {
  transform: rotateY(-62deg) translateZ(-95px) scale(0.72);
}

.works-card .bigcard-content,
.works-card .bigcard-title,
.works-card .bigcard-authors,
.works-card .bigcard-venue,
.works-card .bigcard-desc,
.works-card .bigcard-link {
  color: rgba(255, 255, 255, 0.9);
}

.works-card .bigcard-authors,
.works-card .bigcard-desc {
  color: rgba(255, 255, 255, 0.65);
}

.works-card .bigcard-authors .author-name {
  color: #f5eab8;
}

.works-card .bigcard-link {
  color: rgba(255, 255, 255, 0.85);
  position: relative;
  padding-bottom: 2px;
}

.works-card .bigcard-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background: rgba(255, 255, 255, 0.6);
  transition: width 0.3s ease;
}

.works-card .bigcard-link:hover {
  color: #fff;
}

.works-card .bigcard-link:hover::after {
  width: 100%;
}

/* Collapse transitions: text fades out first, then panel shrinks */
.works-card-abstract {
  flex: 0 0 0;
  min-width: 0;
  max-width: 0;
  opacity: 0;
  overflow: hidden;
  background: #0d0d0d;
  padding: 0;
  overflow-y: auto;
  transition: flex 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.18s,
    min-width 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.18s,
    max-width 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.18s,
    opacity 0.2s ease,
    padding 0.4s ease 0.18s;
  font-size: 0.8rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.88);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Expand transitions: panel opens first, then text fades in */
.works-card.is-expanded .works-card-abstract {
  flex: 1 1 580px;
  min-width: 400px;
  max-width: 580px;
  opacity: 1;
  padding: 28px 28px 28px 24px;
  transition: flex 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    min-width 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    max-width 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    opacity 0.35s ease 0.1s,
    padding 0.35s ease;
}

.works-card-abstract::before {
  content: 'ABSTRACT';
  position: absolute;
  bottom: 16px;
  right: 20px;
  font-family: 'Sora', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 4rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.08);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  z-index: 0;
  line-height: 1;
}

.works-card-abstract-text,
.works-card-abstract-close {
  position: relative;
  z-index: 1;
}

/* Close button: fade out immediately on collapse */
.works-card-abstract-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity 0.15s ease, background 0.2s ease;
}

/* Close button: fade in with delay on expand */
.works-card.is-expanded .works-card-abstract-close {
  opacity: 1;
  transition: opacity 0.3s ease 0.35s, background 0.2s ease;
}

.works-card-abstract-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Text: fade out quickly on collapse */
.works-card-abstract-text {
  margin-right: 20px;
  white-space: pre-line;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.15s ease, transform 0.15s ease;
}

/* Text: fade in with delay on expand */
.works-card.is-expanded .works-card-abstract-text {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.4s ease 0.3s, transform 0.4s ease 0.3s;
}

.works-carousel-prev,
.works-carousel-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  border-radius: 50%;
  transition: background 0.25s, color 0.25s, border-color 0.25s, transform 0.25s;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
}

.works-carousel-prev {
  left: 10%;
}

.works-carousel-next {
  right: 10%;
}

.works-carousel-prev:hover,
.works-carousel-next:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-50%) scale(1.08);
}

.works-carousel-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 24px;
}

.works-carousel-dots {
  display: flex;
  gap: 10px;
  align-items: center;
}

.works-carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.25);
  cursor: pointer;
  padding: 0;
  transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94),
    background 0.3s ease,
    width 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.works-carousel-dot:hover {
  background: rgba(255, 255, 255, 0.5);
}

.works-carousel-dot.is-active {
  background: #fff;
  width: 24px;
  border-radius: 4px;
}

.works-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 0px;
  justify-content: center;
}

.work-item {
  display: flex;
  align-items: center;
  gap: 56px;
  background: var(--card-bg);
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 4px 20px var(--card-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  padding: 40px 56px;
  max-width: 1400px;
  margin: 0 auto;
}

.work-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px var(--card-shadow);
}

.work-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 16px;
}

.image-container {
  position: relative;
  width: 200px;
  aspect-ratio: 16/9;
  border-radius: 18px;
  overflow: hidden;
  background: transparent;
  box-shadow: none;
  border: none;
  margin: 0;
  padding: 0;
}

.image-default,
.image-hover {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 18px;
  transition: opacity 0.3s;
  box-shadow: none;
  border: none;
  margin: 0;
  background: transparent;
}

.image-hover { opacity: 0; z-index: 2; }
.image-container:hover .image-hover { opacity: 1; }
.image-container:hover .image-default { opacity: 0; }

.work-content {
  padding: 0 0 0 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  background: transparent;
  margin: 0;
}

.work-title {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.4;
}

.work-authors {
  font-size: 1rem;
  color: rgba(30, 31, 36, 0.8);
  margin-bottom: 12px;
}

.work-venue {
  font-size: 0.9rem;
  color: #000;
  margin-bottom: 15px;
  font-style: italic;
  font-family: 'Sora', 'Aptos', 'Lato', sans-serif;
  font-weight: 700;
}

.work-description {
  font-size: 0.95rem;
  line-height: 1.6;
  color: rgba(30, 31, 36, 0.7);
  margin-bottom: 20px;
  flex: 1;
}

.work-links {
  display: flex;
  gap: 15px;
}

.work-link {
  color: #000;
  text-decoration: none;
  font-size: 0.9rem;
  position: relative;
  padding: 0.3rem 0;
  transition: color 0.3s ease;
}

.work-link:hover {
  color: var(--link-hover-color);
}

.work-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 1px;
  bottom: 0;
  left: 0;
  background-color: var(--link-hover-color);
  transition: width 0.3s ease;
}

.work-link:hover::after {
  width: 100%;
}

/* 响应式设计 */
@media (max-width: 1024px) {
  .work-item {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 10px;
    gap: 18px;
  }
  .header-links {
    display: flex;
    justify-content: center;
    gap: 18px;
    margin-top: 12px;
  }
  .image-container {
    width: 100%;
    min-width: 0;
    max-width: 100%;
    height: 220px;
    margin-bottom: 18px;
  }
}

@media (max-width: 768px) {
  .section-title {
    font-size: 2rem;
  }
  .header-links {
    display: flex;
    justify-content: center;
    gap: 18px;
    margin-top: 12px;
  }
  .work-item {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 0;
    gap: 18px;
  }
  .image-container {
    height: 180px;
    min-width: 0;
    max-width: 100%;
  }
}

.large-banner {
  display: flex;
  align-items: stretch;
  background: #fff;
  border-radius: 32px;
  overflow: hidden;
  box-shadow: none;
  padding: 0;
  min-height: 400px;
  max-width: 1800px;
  margin: 40px auto;
}

.work-image-banner {
  flex: 2 2 0;
  min-width: 0;
  position: relative;
  background: #f6f8fa;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 32px 0 0 32px;
  overflow: hidden;
}

.work-image-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 32px 0 0 32px;
  display: block;
}

.work-content-banner {
  flex: 1 1 0;
  min-width: 0;
  padding: 60px 48px 48px 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: #fff;
}

.work-content-banner h2 {
  font-size: 2.6rem;
  font-weight: 700;
  margin-bottom: 1.2rem;
}

.work-content-banner .desc {
  font-size: 1.3rem;
  color: #222;
  margin-bottom: 2.5rem;
}

.more-link {
  color: #3C56F4;
  font-size: 1.1rem;
  text-decoration: none;
  align-self: flex-end;
  margin-top: auto;
}

@media (max-width: 900px) {
  .large-banner {
    flex-direction: column;
    border-radius: 24px;
    min-height: 0;
  }
  .work-image-banner,
  .work-image-banner img {
    border-radius: 24px 24px 0 0;
    height: 220px;
  }
  .work-content-banner {
    border-radius: 0 0 24px 24px;
    padding: 32px 18px;
  }
}

.rep-card {
  display: flex;
  background: #fff;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(60,86,244,0.06);
  margin-bottom: 40px;
  border: none;
}

.rep-img-wrap {
  width: 420px;
  min-width: 320px;
  max-width: 520px;
  background: #f6f8fa;
  border-radius: 24px 0 0 24px;
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
}

.ratio-16-9 {
  width: 100%;
  padding-top: 56.25%; /* 16:9 */
  position: relative;
}

.rep-img {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: 0;
  transition: transform 0.35s cubic-bezier(.4,1.6,.6,1), box-shadow 0.3s;
}

.rep-content {
  flex: 1 1 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 48px 40px;
  overflow: auto;
}

.rep-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.rep-authors {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}
.author-name {
  font-weight: 700;
  color: #222;
}

.rep-venue a {
  color: #3C56F4;
  font-size: 1rem;
  text-decoration: none;
  margin-bottom: 1rem;
  display: inline-block;
}

.rep-desc {
  color: #444;
  font-size: 1.1rem;
  margin: 1.2rem 0 1.5rem 0;
}

.rep-links a {
  color: #3C56F4;
  margin-right: 24px;
  font-size: 1rem;
  text-decoration: none;
  transition: color 0.2s;
}
.rep-links a:hover {
  color: #1a2bb8;
}

@media (max-width: 900px) {
  .rep-card {
    flex-direction: column;
    border-radius: 16px;
  }
  .rep-img-wrap {
    width: 100%;
    min-width: 0;
    max-width: 100%;
    aspect-ratio: 16/9;
    height: auto;
  }
  .rep-content {
    padding: 24px 16px;
  }
}

.bigcard {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 0px 0px var(--card-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
}

.bigcard:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px var(--card-shadow);
}

.works-card .bigcard:hover {
  transform: none;
  box-shadow: none;
}

.bigcard-img-wrap {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 比例 */
  overflow: hidden;
}

.bigcard-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.35s cubic-bezier(.4,1.6,.6,1), transform 0.35s cubic-bezier(.4,1.6,.6,1);
}

.img-default {
  opacity: 1;
  z-index: 1;
}

.img-hover {
  opacity: 0;
  z-index: 2;
}

.bigcard-img-wrap:hover .img-default {
  opacity: 0;
  transform: scale(1.04);
}

.bigcard-img-wrap:hover .img-hover {
  opacity: 1;
  transform: scale(1.04);
}

.bigcard-content {
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  justify-content: space-between;
}

.bigcard-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  line-height: 1.38;
}

.bigcard-authors {
  font-size: 0.88rem;
  color: rgba(30, 31, 36, 0.8);
  margin-bottom: 6px;
  line-height: 1.38;
}

.bigcard-venue {
  font-size: 0.9rem;
  color: #000;
  margin-bottom: 12px;
  font-weight: 700;
  font-family: 'Sora', 'Aptos', 'Lato', sans-serif;
}

.bigcard-desc {
  font-size: 1rem;
  line-height: 1.45;
  color: rgba(30, 31, 36, 0.7);
  margin-bottom: 20px;
}

.author-name {
  font-weight: 600;
  color: var(--text-color);
}

.bigcard-links {
  display: flex;
  gap: 16px;
  margin-top: auto;
}

.bigcard-link {
  color: #000;
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.3s ease;
}

.bigcard-link:hover {
  color: var(--link-hover-color);
}

/* 响应式布局 */
@media (max-width: 1200px) {
  .works-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .works-list {
    grid-template-columns: 1fr;
  }

  .works-section {
    padding: 40px 0 60px;
  }

  .section-header {
    padding: 0 20px 24px;
  }

  .section-header--dark .section-title {
    font-size: 1.85rem;
  }

  .works-carousel {
    padding: 0 12px 32px;
  }

  .works-card {
    width: min(80vw, 340px);
    height: auto;
  }

  .works-card.is-expanded {
    width: min(80vw, 340px);
    height: auto;
  }

  .works-card-inner {
    width: 100%;
  }

  .works-card-abstract {
    display: none !important;
  }

  .works-carousel-stage {
    min-height: 400px;
  }

  .works-carousel-track {
    min-height: 400px;
  }

  .works-card.works-card--center {
    transform: rotateY(0deg) translateZ(40px) scale(1.04);
  }

  .works-card.works-card--left-1,
  .works-card.works-card--right-1 {
    transform: rotateY(36deg) translateZ(-25px) scale(0.88);
  }

  .works-card.works-card--right-1 {
    transform: rotateY(-36deg) translateZ(-25px) scale(0.88);
  }

  .works-card.works-card--left-2,
  .works-card.works-card--right-2,
  .works-card.works-card--far {
    transform: rotateY(52deg) translateZ(-60px) scale(0.76);
  }

  .works-card.works-card--right-2,
  .works-card.works-card--right-far {
    transform: rotateY(-52deg) translateZ(-60px) scale(0.76);
  }

  .bigcard{
    margin: 20px;
  }

  .bigcard-content {
    padding: 16px;
  }

  .bigcard-title {
    font-size: 0.95rem;
  }

  .bigcard-desc {
    font-size: 0.82rem;
  }
}

/* Full Publications 部分 */
.publications-section {
  padding: 80px 40px;
  max-width: 1400px;
  margin: 0 auto;
}

.publications-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.publications-category {
  margin-bottom: 2rem;
}

.publications-category:last-child {
  margin-bottom: 0;
}

.publications-category-title {
  font-family: 'Sora', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1.35rem;
  font-weight: 600;
  color: #222;
  margin: 0 0 1rem 0;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid rgba(0, 0, 0, 0.08);
}

.publication-item {
  display: flex;
  gap: 30px;
  align-items: flex-start;
  padding: 20px 16px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 12px;
  transition: transform 0.3s ease, background 0.3s ease;
}

.publication-item:hover {
  transform: translateY(-2px);
  background: rgba(0, 0, 0, 0.02);
}

.publication-item:last-child {
  border-bottom: none;
}

.publication-image {
  width: 200px;
  height: 120px;
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  transition: box-shadow 0.3s ease;
}

.publication-item:hover .publication-image {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.14);
}

.pub-img-default,
.pub-img-hover {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.3s ease;
}

.pub-img-hover {
  opacity: 0;
}

.publication-image:hover .pub-img-default {
  opacity: 0;
}

.publication-image:hover .pub-img-hover {
  opacity: 1;
}

.publication-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.publication-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.publication-authors {
  font-size: 0.95rem;
  color: rgba(30, 31, 36, 0.8);
  line-height: 1.4;
}

.publication-venue {
  font-size: 0.9rem;
  color: #000;
  font-weight: 700;
  font-family: 'Sora', 'Aptos', 'Lato', sans-serif;
}

.publication-links {
  display: flex;
  gap: 12px;
  margin-top: 4px;
}

.publication-links a {
  color: #000;
  text-decoration: none;
  font-size: 0.9rem;
  position: relative;
  padding-bottom: 2px;
  transition: color 0.3s ease;
}

.publication-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--link-hover-color);
  transition: width 0.3s ease;
}

.publication-links a:hover {
  color: var(--link-hover-color);
}

.publication-links a:hover::after {
  width: 100%;
}

.github-stars {
  color: #000;
  font-size: 0.85rem;
  margin-left: 4px;
  display: none;
  font-weight: 500;
}

@media (max-width: 768px) {
  .publications-section {
    padding: 40px 20px;
  }

  .publication-item {
    flex-direction: column;
    gap: 20px;
  }

  .publication-image {
    width: 100%;
    height: 180px;
  }

  .publication-title {
    font-size: 1.1rem;
  }

  .publication-authors {
    font-size: 0.9rem;
  }
}

/* 快速导航栏样式 */
.fast-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 1000;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
  transition: box-shadow 0.3s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #000;
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  gap: 40px;
}

.nav-link {
  color: #000;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

.nav-link:hover {
  color: var(--link-hover-color);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: #000;
  transition: width 0.3s ease;
}

.nav-link:hover::after {
  width: 100%;
}

/* 响应式设计 */
@media (max-width: 900px) {
  .nav-container {
    flex-direction: column;
    align-items: center;
    padding: 10px 20px;
  }
  .nav-title {
    font-size: 0.9rem;
    margin-bottom: 6px;
  }
  .nav-links {
    display: flex;
    gap: 20px;
    justify-content: center;
    width: 100%;
  }
  .nav-link {
    font-size: 0.9rem;
  }
}

.education-section {
  max-width: 1400px;
  margin: 0 auto 40px auto;
  padding: 60px 40px 20px 40px;
}

.education-list, .work-list {
  margin-bottom: 30px;
}

.edu-block, .work-block {
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  padding: 20px 0 14px 0;
}

.edu-header, .work-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-weight: 600;
  font-size: 1.08rem;
}

.edu-school, .work-company {
  color: #000;
  font-weight: 700;
}

.edu-location, .work-location {
  color: #888;
  font-size: 0.98rem;
  font-weight: 400;
}

.edu-detail, .work-detail {
  display: flex;
  justify-content: space-between;
  font-size: 1rem;
  margin: 2px 0 0 0;
  font-style: italic;
}

.edu-degree, .work-title {
  color: #333;
}

.edu-time, .work-time {
  color: #000;
  font-size: 0.98rem;
  margin-left: 10px;
}

.edu-desc, .work-desc {
  color: #444;
  font-size: 0.97rem;
  margin-top: 2px;
  margin-bottom: 2px;
}

@media (max-width: 900px) {
  .education-section {
    padding: 40px 8px 8px 8px;
  }
  .edu-header, .work-header, .edu-detail, .work-detail {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
  }
}

.awards-section {
  max-width: 1400px;
  margin: 0 auto 60px auto;
  padding: 60px 40px 20px 40px;
}

.awards-list {
  margin-top: 18px;
  padding-left: 24px;
}

.awards-list li {
  font-size: 1rem;
  color: #444;
  margin-bottom: 8px;
  line-height: 1.7;
  list-style-type: circle;
}

@media (max-width: 900px) {
  .awards-section {
    padding: 40px 8px 8px 8px;
  }
  .awards-list li {
    font-size: 0.97rem;
  }
}

/* Portrait / vertical screen: all sections use 100% viewport width */
@media (orientation: portrait) {
  body {
    overflow-x: hidden;
  }

  .header-container,
  .works-section,
  .publications-section,
  .education-section,
  .awards-section {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .section-header {
    max-width: 100%;
  }

  .works-carousel,
  .works-carousel-stage {
    max-width: 100%;
  }

  /* Left padding for Full pub and Experience */
  .publications-section {
    padding-left: 24px;
    padding-right: 24px;
  }

  .education-section {
    padding-left: 24px;
    padding-right: 24px;
  }

  /* Portrait: image switch on click instead of hover (Representative works) */
  .bigcard-img-wrap {
    cursor: pointer;
  }

  .bigcard-img-wrap:hover .img-default {
    opacity: 1;
    transform: none;
  }

  .bigcard-img-wrap:hover .img-hover {
    opacity: 0;
    transform: none;
  }

  .bigcard-img-wrap.img-revealed .img-default {
    opacity: 0;
    transform: scale(1.04);
  }

  .bigcard-img-wrap.img-revealed .img-hover {
    opacity: 1;
    transform: scale(1.04);
  }

  /* Portrait: image switch on click instead of hover (Full pub) */
  .publication-image {
    cursor: pointer;
  }

  .publication-image:hover .pub-img-default {
    opacity: 1;
  }

  .publication-image:hover .pub-img-hover {
    opacity: 0;
  }

  .publication-image.img-revealed .pub-img-default {
    opacity: 0;
  }

  .publication-image.img-revealed .pub-img-hover {
    opacity: 1;
  }
}