/* 当前栏目页横幅：各栏目页自行覆盖公共头部布局。 */
.inner-hero {
  background: none;
}

/* 学院简介首段：左侧标题、分隔线和右侧摘要组成稳定三栏。 */
.overview-main {
  padding-top: 100px;
}

.overview-intro {
  width: 1440px;
  height: 120px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 536px 4px 780px;
  gap: 60px;
}

.overview-title h2 {
  margin: 0;
  font-size: 40px;
  font-weight: 400;
  line-height: 56px;
}

.overview-title p {
  margin: 20px 0 0;
  color: #ddd;
  font-size: 24px;
  line-height: 36px;
}

.overview-intro-divider {
  width: 4px;
  height: 120px;
  background: #ddd;
}

.overview-summary {
  margin: 0;
  font-size: 16px;
  line-height: 30px;
  text-align: justify;
}

/* 学院历程：桌面端按设计稿坐标叠放主图、时间线和统计数据。 */
.history-stage {
  position: relative;
  width: 1452px;
  height: 740px;
  margin: 60px 0 0 199px;
}

.history-visual {
  position: absolute;
  top: 0;
  left: 0;
  width: 680px;
  height: 740px;
}

.history-event {
  position: absolute;
  height: 60px;
}

.history-event::before {
  position: absolute;
  top: 45px;
  left: 8px;
  width: 360px;
  height: 1px;
  content: "";
  background: #77a9cd;
}

.history-event::after {
  position: absolute;
  top: 37px;
  left: 0;
  width: 15px;
  height: 15px;
  content: "";
  background: var(--blue);
  border-radius: 50%;
}

.history-event time,
.history-event span {
  position: absolute;
  font-size: 20px;
  line-height: 30px;
  white-space: nowrap;
}

.history-event time {
  top: 0;
  left: 291px;
}

.history-event span {
  top: 30px;
  left: 428px;
  font-size: 24px;
}

.history-event:nth-of-type(1) { top: 40px; left: 487px; width: 548px; }
.history-event:nth-of-type(2) { top: 140px; left: 573px; width: 548px; }
.history-event:nth-of-type(3) { top: 240px; left: 627px; width: 620px; }
.history-event:nth-of-type(4) { top: 340px; left: 661px; width: 644px; }

.history-stat {
  position: absolute;
  width: 170px;
  height: 80px;
  display: flex;
  flex-direction: column;
}

.history-stat strong {
  font-size: 18px;
  font-weight: 400;
  line-height: 30px;
  white-space: nowrap;
}

/* 数字单独强调，单位保留正文样式，并共用基线以贴合设计稿。 */
.history-stat-number {
  color: var(--blue);
  font-size: 32px;
  font-weight: 600;
}

.history-stat strong::after {
  width: 60px;
  height: 1px;
  margin-top: 10px;
  display: block;
  content: "";
  background: var(--orange);
}

.history-stat span {
  margin-top: 9px;
  font-size: 18px;
  line-height: 30px;
  white-space: nowrap;
}

.history-stat:nth-of-type(5) { top: 460px; left: 750px; }
.history-stat:nth-of-type(6) { top: 460px; left: 1011px; }
.history-stat:nth-of-type(7) { top: 460px; left: 1289px; }
.history-stat:nth-of-type(8) { top: 580px; left: 750px; }
.history-stat:nth-of-type(9) { top: 580px; left: 1011px; }
.history-stat:nth-of-type(10) { top: 580px; left: 1290px; }

/* 学院介绍正文：保持设计稿 1440 像素正文宽度与舒适行距。 */
.overview-description {
  width: 1440px;
  min-height: 368px;
  margin: 60px auto 0;
  font-size: 16px;
  line-height: 28px;
  text-align: justify;
}

.overview-description p {
  margin: 0;
}

.overview-description p + p {
  margin-top: 28px;
}

.overview-page .site-footer {
  margin-top: 100px;
  border-top: 6px solid var(--blue);
}

/* 手机端栏目页：所有信息按阅读顺序纵向排列。 */
html.is-mobile .overview-main {
  padding: 48px 16px 0;
}

html.is-mobile .overview-intro {
  width: 100%;
  height: auto;
  display: block;
}

html.is-mobile .overview-title h2 {
  font-size: 28px;
  line-height: 40px;
}

html.is-mobile .overview-title p {
  margin-top: 8px;
  font-size: 15px;
  line-height: 24px;
}

html.is-mobile .overview-intro-divider {
  width: 60px;
  height: 3px;
  margin: 22px 0;
  display: block;
  background: var(--blue);
}

html.is-mobile .overview-summary {
  font-size: 15px;
  line-height: 28px;
}

html.is-mobile .history-stage {
  width: 100%;
  height: auto;
  margin: 42px 0 0;
  display: flex;
  flex-direction: column;
}

html.is-mobile .history-visual {
  position: static;
  width: 100%;
  height: auto;
}

html.is-mobile .history-event {
  position: relative;
  top: auto !important;
  left: auto !important;
  width: 100% !important;
  height: 72px;
  padding-left: 24px;
  border-left: 1px solid #77a9cd;
}

html.is-mobile .history-event::before {
  display: none;
}

html.is-mobile .history-event::after {
  top: 9px;
  left: -6px;
  width: 11px;
  height: 11px;
}

html.is-mobile .history-event time,
html.is-mobile .history-event span {
  position: static;
  display: block;
  font-size: 16px;
  line-height: 26px;
}

html.is-mobile .history-event span {
  color: #555;
}

html.is-mobile .history-stat {
  position: static;
  width: auto;
  height: auto;
  min-height: 94px;
  padding: 15px 10px;
  border-top: 1px solid #eee;
}

html.is-mobile .history-event:nth-of-type(4) {
  margin-bottom: 18px;
}

html.is-mobile .history-stat:nth-of-type(5) {
  margin-top: 0;
}

html.is-mobile .history-stage {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}

html.is-mobile .history-visual,
html.is-mobile .history-event {
  grid-column: 1 / -1;
}

html.is-mobile .history-stat strong {
  font-size: 18px;
}

html.is-mobile .history-stat span {
  font-size: 14px;
  line-height: 22px;
  white-space: normal;
}

html.is-mobile .overview-description {
  width: 100%;
  min-height: 0;
  margin-top: 42px;
  font-size: 15px;
  line-height: 28px;
}

html.is-mobile .overview-page .site-footer {
  margin-top: 56px;
  border-top-width: 4px;
}