/* ========================================
   学校概况 · 内容页样式
   ======================================== */

.about-page-header .hero-banner {
  display: none;
}

/* 内容页头部：去掉园林线稿与纹理，logo 更干净 */
.about-page-header .header-garden-deco {
  display: none;
}

.about-page-header::after {
  display: none;
}

.about-page-header .logo-mark {
  border: none;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 学校概况页：主导航高亮 */
.about-page-header .nav-item.has-dropdown > a.active {
  color: #fff;
  background: rgba(0, 0, 0, 0.15);
}

.about-page-header .nav-item.has-dropdown > a.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 3px;
  background: var(--color-gold);
  display: block;
}

/* 页面 Banner */
.about-banner {
  position: relative;
  height: 300px;
  background: var(--color-primary) center 40% / cover no-repeat;
  margin-top: 0;
}

.college-banner-brand {
  position: absolute;
  top: 20px;
  left: var(--hero-gutter, 24px);
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: calc(100% - 48px);
}

.college-banner-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.25));
}

.college-banner-name {
  color: #fff;
  font-family: var(--font-serif);
  font-size: clamp(16px, 2.2vw, 22px);
  letter-spacing: 0.06em;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.35);
  line-height: 1.3;
  display: block;
}

.college-banner-motto {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--color-gold, #c9a227);
}

.about-banner:has(.college-banner-brand) .about-banner-inner {
  padding-top: 72px;
  box-sizing: border-box;
}

.about-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(107, 20, 20, 0.82), rgba(140, 28, 28, 0.65));
}

.about-banner-inner {
  position: relative;
  z-index: 1;
  max-width: var(--site-max-width);
  margin: 0 auto;
  padding: 0 var(--hero-gutter);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-sizing: border-box;
}

.about-banner:has(.college-banner-brand) .about-banner-inner {
  padding-top: 64px;
}

.about-banner h1 {
  font-family: var(--font-serif);
  font-size: 32px;
  color: #fff;
  letter-spacing: 4px;
  margin-bottom: 12px;
}

.about-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
}

.about-breadcrumb a:hover {
  color: #fff;
}

.about-breadcrumb span {
  opacity: 0.5;
}

/* 主体布局 */
.about-body {
  padding: 40px 0 64px;
  background: #fff;
}

.about-layout {
  max-width: var(--site-max-width);
  margin: 0 auto;
  padding: 0 var(--hero-gutter);
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  align-items: start;
  box-sizing: border-box;
}

.about-sidenav {
  position: sticky;
  top: 24px;
  background: var(--color-bg-pink);
  border: 1px solid #eee5e2;
  border-radius: 4px;
  overflow: hidden;
}

.about-sidenav-title {
  padding: 14px 18px;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-serif);
  font-size: 16px;
  letter-spacing: 2px;
}

.about-sidenav a {
  display: block;
  padding: 13px 18px;
  font-size: 14px;
  color: #555;
  border-bottom: 1px solid #eee5e2;
  transition: background 0.2s, color 0.2s, padding-left 0.2s;
}

.about-sidenav a:last-child {
  border-bottom: none;
}

.about-sidenav a:hover {
  color: var(--color-primary);
  background: rgba(140, 28, 28, 0.05);
  padding-left: 22px;
}

.about-sidenav a.active {
  color: var(--color-primary);
  background: #fff;
  font-weight: bold;
  border-left: 3px solid var(--color-primary);
  padding-left: 15px;
}

.about-content {
  min-width: 0;
}

.about-section-title {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--color-primary);
  letter-spacing: 2px;
  padding-bottom: 12px;
  margin-bottom: 24px;
  border-bottom: 2px solid var(--color-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.about-section-title::before {
  content: "";
  width: 6px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 1px;
}

/* ========== 概况入口页 ========== */
.about-hub-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.about-hub-card {
  display: flex;
  flex-direction: column;
  padding: 28px;
  background: linear-gradient(180deg, #faf7f5 0%, #fff 100%);
  border: 1px solid #eee5e2;
  border-radius: 4px;
  transition: box-shadow 0.25s, border-color 0.25s, transform 0.25s;
}

.about-hub-card:hover {
  border-color: rgba(140, 28, 28, 0.25);
  box-shadow: 0 8px 24px rgba(140, 28, 28, 0.1);
  transform: translateY(-3px);
  color: inherit;
}

.about-hub-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.about-hub-card h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--color-primary);
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.about-hub-card p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.75;
  flex: 1;
}

.about-hub-more {
  margin-top: 16px;
  font-size: 13px;
  color: var(--color-primary);
}

/* ========== 图文简介 ========== */
.intro-lead {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
  align-items: center;
}

.intro-lead-img {
  border-radius: 4px;
  overflow: hidden;
  line-height: 0;
}

.intro-lead-img img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.intro-lead-text h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--color-primary);
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.intro-lead-text p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

.intro-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.intro-stat {
  text-align: center;
  padding: 20px 12px;
  background: var(--color-bg-pink);
  border-radius: 4px;
}

.intro-stat strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 28px;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.intro-stat span {
  font-size: 12px;
  color: var(--color-text-muted);
}

.intro-blocks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.intro-block {
  padding: 24px;
  background: #fafafa;
  border-top: 3px solid var(--color-primary);
  border-radius: 0 0 4px 4px;
}

.intro-block h4 {
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.intro-block p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.75;
}

.intro-timeline {
  margin-bottom: 40px;
}

.intro-timeline-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 24px;
  padding-bottom: 28px;
  position: relative;
}

.intro-timeline-item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 49px;
  top: 28px;
  bottom: 0;
  width: 2px;
  background: #eee5e2;
}

.intro-timeline-year {
  text-align: right;
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--color-primary);
  font-weight: bold;
  padding-top: 2px;
}

.intro-timeline-year::after {
  content: "";
  position: absolute;
  left: 44px;
  top: 8px;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 2px var(--color-primary);
}

.intro-timeline-body h4 {
  font-size: 16px;
  margin-bottom: 8px;
  color: #333;
}

.intro-timeline-body p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.75;
}

.intro-video {
  margin-bottom: 40px;
}

.intro-video-wrap {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #111;
  border-radius: 4px;
  overflow: hidden;
}

.intro-video-wrap video,
.intro-video-wrap iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

.intro-video-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #2a2a2a, #111);
  color: rgba(255, 255, 255, 0.7);
  gap: 12px;
  cursor: pointer;
}

.intro-video-placeholder svg {
  color: var(--color-gold);
}

.intro-split-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.intro-split-row img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 4px;
}

.intro-split-row p {
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-text-light);
}

/* ========== VR 全景 ========== */
.vr-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
}

.vr-scene-btn,
.vr-tool-btn {
  padding: 8px 18px;
  font-size: 13px;
  border: 1px solid #ddd;
  background: #fff;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s;
  color: #555;
}

.vr-scene-btn:hover,
.vr-tool-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.vr-scene-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.vr-viewer-wrap {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid #eee;
  margin-bottom: 20px;
}

#vrPanorama {
  width: 100%;
  height: 520px;
}

.vr-hint {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.7;
  padding: 12px 16px;
  background: var(--color-bg-gray);
  border-radius: 4px;
}

.vr-hint strong {
  color: var(--color-primary);
}

/* ========== 领导展示 ========== */
.leader-section {
  margin-bottom: 40px;
}

.leader-section h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: #333;
  margin-bottom: 20px;
  padding-left: 12px;
  border-left: 3px solid var(--color-primary);
}

.leader-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.leader-card {
  text-align: center;
  padding: 20px 16px;
  background: var(--color-bg-pink);
  border: 1px solid #eee5e2;
  border-radius: 4px;
  cursor: pointer;
  transition: box-shadow 0.25s, transform 0.25s;
}

.leader-card:hover {
  box-shadow: 0 6px 20px rgba(140, 28, 28, 0.1);
  transform: translateY(-3px);
}

.leader-avatar {
  width: 100px;
  height: 130px;
  margin: 0 auto 14px;
  border-radius: 50% 50% 0 0;
  overflow: hidden;
  border: 3px solid rgba(140, 28, 28, 0.15);
}

.leader-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.leader-card h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--color-primary);
  margin-bottom: 4px;
}

.leader-card .leader-role {
  font-size: 12px;
  color: var(--color-text-muted);
}

.org-chart {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.org-node {
  padding: 16px;
  text-align: center;
  background: #fafafa;
  border: 1px solid #eee;
  border-radius: 4px;
  font-size: 14px;
}

.org-node.highlight {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* 领导详情弹窗 */
.leader-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

.leader-modal.open {
  opacity: 1;
  visibility: visible;
}

.leader-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
}

.leader-modal-panel {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 640px;
  max-height: 85vh;
  overflow-y: auto;
  background: #fff;
  border-radius: 6px;
  padding: 32px;
}

.leader-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border: none;
  background: #f5f5f5;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  color: #666;
}

.leader-modal-head {
  display: flex;
  gap: 24px;
  margin-bottom: 20px;
}

.leader-modal-head img {
  width: 120px;
  height: 156px;
  object-fit: cover;
  border-radius: 50% 50% 0 0;
  flex-shrink: 0;
}

.leader-modal-head h3 {
  font-family: var(--font-serif);
  font-size: 26px;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.leader-modal-head .role {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.leader-modal-body h4 {
  font-size: 15px;
  color: var(--color-primary);
  margin: 16px 0 8px;
}

.leader-modal-body p,
.leader-modal-body li {
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-text-light);
}

.leader-modal-body ul {
  padding-left: 18px;
  list-style: disc;
}

/* ========== 校园相册 ========== */
.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.gallery-filter-btn {
  padding: 7px 16px;
  font-size: 13px;
  border: 1px solid #ddd;
  background: #fff;
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s;
  color: #666;
}

.gallery-filter-btn:hover,
.gallery-filter-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.gallery-item {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 4px;
  cursor: pointer;
  background: #eee;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s, opacity 0.4s;
  opacity: 0;
}

.gallery-item img.loaded {
  opacity: 1;
}

.gallery-item:hover img.loaded {
  transform: scale(1.05);
}

.gallery-item-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 8px 12px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.65));
  color: #fff;
  font-size: 12px;
  opacity: 0;
  transition: opacity 0.3s;
}

.gallery-item:hover .gallery-item-label {
  opacity: 1;
}

.gallery-skeleton {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #eee 25%, #f5f5f5 50%, #eee 75%);
  background-size: 200% 100%;
  animation: gallery-shimmer 1.2s infinite;
}

.gallery-item img.loaded + .gallery-skeleton,
.gallery-item .gallery-skeleton.hidden {
  display: none;
}

@keyframes gallery-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

.lightbox.open {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  border: none;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  cursor: pointer;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255, 255, 255, 0.3);
}

.lightbox-close {
  top: 20px;
  right: 20px;
  font-size: 24px;
}

.lightbox-prev {
  left: 20px;
}

.lightbox-next {
  right: 20px;
}

.lightbox-caption {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  text-align: center;
}

/* ========== Responsive ========== */
@media (max-width: 992px) {
  .about-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .about-sidenav {
    position: static;
    display: flex;
    flex-wrap: wrap;
  }

  .about-sidenav-title {
    width: 100%;
  }

  .about-sidenav a {
    flex: 1 1 auto;
    text-align: center;
    border-bottom: none;
    border-right: 1px solid #eee5e2;
  }

  .intro-lead,
  .intro-blocks,
  .intro-split-row,
  .about-hub-grid {
    grid-template-columns: 1fr;
  }

  .intro-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .leader-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  #vrPanorama {
    height: 360px;
  }
}

@media (max-width: 640px) {
  .about-banner {
    height: 240px;
    background-position: center 35%;
  }

  .about-banner h1 {
    font-size: 24px;
  }

  .intro-stats,
  .leader-grid,
  .gallery-grid,
  .org-chart {
    grid-template-columns: 1fr;
  }

  .intro-timeline-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .intro-timeline-item::before,
  .intro-timeline-year::after {
    display: none;
  }

  .intro-timeline-year {
    text-align: left;
  }
}