/* ============================================
   关于我们页面
   ============================================ */

/* ---------- 页面横幅（与首页 hero 同一渐变） ---------- */
.page-hero {
  margin-top: var(--header-height-mobile);
  padding: 48px 0;
  background: linear-gradient(135deg, #003a94 0%, #004aba 60%, #0062e0 100%);
  color: #fff;
}
@media (min-width: 768px) { .page-hero { padding: 64px 0; } }
@media (min-width: 1024px) {
  .page-hero {
    margin-top: var(--header-height-pc);
    padding: 72px 0;
  }
}

.page-hero-title {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -.5px;
  margin-bottom: 8px;
}
@media (min-width: 768px) { .page-hero-title { font-size: 34px; } }

.page-hero-desc {
  font-size: 15px;
  color: rgba(255,255,255,.8);
  margin-bottom: 16px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,.65);
  flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255,255,255,.85); }
.breadcrumb a:hover { color: #fff; }

/* ---------- 品牌介绍 ---------- */
.about-intro-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}
@media (min-width: 1024px) {
  .about-intro-layout { grid-template-columns: 1.1fr 1fr; gap: 56px; }
}

.about-intro-title {
  font-size: 26px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  letter-spacing: -.5px;
  margin: 12px 0 20px;
}
@media (min-width: 768px) { .about-intro-title { font-size: 34px; } }

.about-intro-text {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 14px;
  max-width: 560px;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}
.about-stat { text-align: left; }
.about-stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--brand-primary);
  line-height: 1.2;
  letter-spacing: -.5px;
}
@media (min-width: 768px) { .about-stat-num { font-size: 34px; } }
.about-stat-label {
  font-size: 13px;
  color: var(--text-sub);
  margin-top: 4px;
}

.about-intro-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about-intro-img img { width: 100%; height: auto; display: block; }

/* ---------- 核心优势 ---------- */
.advantage-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 768px) {
  .advantage-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; }
}

.advantage-card {
  padding: 28px 24px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}
.advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.advantage-icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  background: var(--brand-light);
  border-radius: var(--radius-md);
  margin-bottom: 18px;
}
.advantage-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
}
.advantage-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.advantage-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
}
.advantage-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brand-primary);
  opacity: .5;
}

/* ---------- 二十年成果 ---------- */
.results-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.results-tab {
  padding: 8px 24px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-sub);
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--transition);
}
.results-tab:hover { color: var(--brand-primary); border-color: var(--brand-primary); }
.results-tab.is-active {
  color: #fff;
  background: var(--brand-primary);
  border-color: var(--brand-primary);
}

.results-panel { display: none; }
.results-panel.is-active { display: block; }

.results-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 640px) { .results-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .results-grid { grid-template-columns: repeat(3, 1fr); gap: 20px; } }

.result-card {
  display: block;
  padding: 24px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}
.result-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.result-school {
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-primary);
  letter-spacing: .5px;
  margin-bottom: 10px;
}
.result-story {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
}

/* ---------- 课程体系 ---------- */
.course-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 768px) {
  .course-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; }
}

.course-card {
  padding: 28px 24px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}
.course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.course-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}
.course-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 16px;
}
.course-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.course-tags span {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 500;
  color: var(--brand-primary);
  background: var(--brand-light);
  border-radius: 100px;
}
.course-detail {
  font-size: 13px !important;
  color: var(--text-light) !important;
  line-height: 1.6 !important;
  margin-bottom: 8px !important;
}

/* ---------- 发展历程时间线 ---------- */
.timeline {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
  padding-left: 28px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px; top: 8px; bottom: 8px;
  width: 2px;
  background: var(--border-color);
}
@media (min-width: 768px) {
  .timeline { padding-left: 0; }
  .timeline::before { left: 50%; transform: translateX(-1px); }
}

.timeline-item {
  position: relative;
  padding-left: 28px;
  margin-bottom: 32px;
}
.timeline-item:last-child { margin-bottom: 0; }
@media (min-width: 768px) {
  .timeline-item {
    width: 50%;
    padding-left: 0;
    padding-right: 40px;
    text-align: right;
  }
  .timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 40px;
    text-align: left;
  }
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: 0; top: 6px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--brand-primary);
  z-index: 1;
}
@media (min-width: 768px) {
  .timeline-item::before { left: auto; right: -7px; }
  .timeline-item:nth-child(even)::before { left: -7px; right: auto; }
}

.timeline-year {
  font-size: 20px;
  font-weight: 800;
  color: var(--brand-primary);
  margin-bottom: 6px;
  letter-spacing: -.3px;
}
.timeline-content h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}
.timeline-content p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

/* ---------- 师资团队 ---------- */
.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (min-width: 768px) {
  .team-grid { grid-template-columns: repeat(4, 1fr); gap: 24px; }
}

.team-card {
  text-align: center;
  padding: 24px 16px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}
.team-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.team-avatar {
  width: 100px; height: 100px;
  margin: 0 auto 16px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--bg-gray);
}
.team-avatar img { width: 100%; height: 100%; object-fit: cover; }
.team-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}
.team-role {
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-primary);
  margin-bottom: 10px;
}
.team-desc {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.6;
}

/* ---------- 校区分布 ---------- */
.campus-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 640px) { .campus-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .campus-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; } }

.campus-card {
  padding: 24px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition);
}
.campus-card:hover {
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.campus-city {
  font-size: 18px;
  font-weight: 700;
  color: var(--brand-primary);
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}
.campus-address {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 6px;
}
.campus-phone {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}