/* ============================================================
   总裁商学院 · Presidents Business School
   全站样式 —— 对标哈佛商学院 / 耶鲁管理学院官网视觉规范
   极简 · 留白 · 庄重 · 低饱和 · 无特效
   ============================================================ */

:root {
  --navy: #0e2240;          /* 哈佛藏蓝 / 耶鲁深蓝 */
  --navy-deep: #081527;
  --navy-soft: #1a3055;
  --gold: #b3924f;          /* 哑光金 */
  --gold-light: #c9ae78;
  --ink: #1e1e1e;           /* 深灰正文 */
  --gray: #666a70;
  --gray-light: #9aa0a8;
  --paper: #faf8f3;         /* 米白 */
  --paper-warm: #f3efe7;
  --line: #e2ddd2;
  --serif-cn: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --serif-en: "Times New Roman", "Georgia", serif;
}

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

html { scroll-behavior: smooth; }

/* 全局禁止横向拖动：任何超宽元素都不会再把页面撑出白框 */
html, body { max-width: 100%; overflow-x: hidden; }

body {
  font-family: var(--serif-cn);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.9;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 40px; }

/* ---------- 排版 ---------- */
h1, h2, h3, h4 { font-weight: 600; letter-spacing: 0.04em; }

.section { padding: 110px 0; }
.section.warm { background: var(--paper-warm); }
.section.navy-bg { background: var(--navy); color: #f5f2ea; }

.kicker {
  font-family: var(--serif-en);
  font-size: 13px;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 18px;
}

.section-title {
  font-size: 34px;
  color: var(--navy);
  margin-bottom: 14px;
  line-height: 1.4;
}
.section-title .en {
  display: block;
  font-family: var(--serif-en);
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.2em;
  color: var(--gray-light);
  margin-top: 10px;
  text-transform: uppercase;
}
.navy-bg .section-title { color: #f5f2ea; }

.section-lede {
  max-width: 720px;
  color: var(--gray);
  font-size: 17px;
  margin-bottom: 56px;
}
.navy-bg .section-lede { color: #b8c0cc; }

.gold-rule {
  width: 56px; height: 2px;
  background: var(--gold);
  margin: 26px 0 40px;
}

/* ---------- 顶部导航（浅色版） ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(250, 248, 243, 0.93);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}
.site-header.scrolled {
  background: rgba(250, 248, 243, 0.98);
  box-shadow: 0 2px 14px rgba(14, 34, 64, 0.08);
}

.header-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 40px;
  height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand { display: flex; align-items: center; gap: 16px; color: #fff; flex: 0 0 auto; }

.brand .crest {
  width: 46px; height: 46px;
  border: 1px solid var(--gold);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif-en);
  font-size: 17px;
  color: var(--gold-light);
  letter-spacing: 0.05em;
}
.brand .crest img { width: 42px; height: 42px; object-fit: contain; }
/* logo 固定比例：宽高都不压缩，避免菜单变多时被 flex 挤压变形 */
.brand .brand-logo {
  height: 56px;
  width: auto;
  max-width: none;
  flex: 0 0 auto;
  object-fit: contain;
  display: block;
}

/* ---------- 文章详情页（学术动态） ---------- */
.article-hero {
  position: relative;
  padding: 180px 0 72px;
  text-align: center;
  color: #fff;
  background: var(--navy-deep) center/cover no-repeat;
}
.article-hero::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(8,21,39,.78), rgba(8,21,39,.9));
}
.article-hero .container { position: relative; z-index: 2; }
.article-crumb {
  font-size: 13px;
  letter-spacing: .1em;
  color: rgba(255,255,255,.55);
  margin-bottom: 22px;
}
.article-crumb a { color: rgba(255,255,255,.72); }
.article-crumb a:hover { color: var(--gold-light); }
.article-title {
  font-size: 34px;
  line-height: 1.55;
  letter-spacing: .04em;
  font-weight: 600;
  margin: 0 auto;
  max-width: 860px;
}
.article-meta {
  margin-top: 24px;
  font-size: 13.5px;
  letter-spacing: .12em;
  color: rgba(255,255,255,.6);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px 26px;
}
.article-meta .dot { width: 3px; height: 3px; background: var(--gold); border-radius: 50%; display: inline-block; }

.article-wrap { max-width: 880px; margin: 0 auto; padding: 0 40px; }
.article-body {
  padding: 62px 0 20px;
  font-size: 16.5px;
  line-height: 2.1;
  color: #2b2b2b;
}
.article-body p { margin: 0 0 26px; }
.article-body h2 { font-size: 22px; color: var(--navy); margin: 46px 0 18px; letter-spacing: .06em; }
.article-body h3 { font-size: 18.5px; color: var(--navy); margin: 34px 0 14px; letter-spacing: .05em; }
.article-body h4 { font-size: 17px; color: var(--navy); margin: 28px 0 12px; }
.article-body a { color: var(--gold); border-bottom: 1px solid rgba(179,146,79,.4); }
.article-body img { max-width: 100%; height: auto; margin: 32px auto; display: block; }
.article-body blockquote {
  margin: 32px 0;
  padding: 18px 26px;
  border-left: 3px solid var(--gold);
  background: var(--paper-warm);
  color: var(--gray);
  font-size: 15.5px;
}
.article-body ul, .article-body ol { margin: 0 0 26px; padding-left: 1.4em; }
.article-body ul li { list-style: disc; margin-bottom: 10px; }
.article-body ol li { list-style: decimal; margin-bottom: 10px; }
.article-body table { width: 100%; border-collapse: collapse; margin: 28px 0; font-size: 15px; }
.article-body th, .article-body td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.article-body th { background: var(--paper-warm); font-weight: 600; color: var(--navy); }
.article-body strong { font-weight: 600; color: var(--navy); }

/* 上一篇 / 下一篇 */
.article-pager {
  border-top: 1px solid var(--line);
  margin-top: 34px;
  padding: 28px 0 0;
  font-size: 14.5px;
  color: var(--gray);
}
.article-pager .row { padding: 9px 0; }
.article-pager .row span.lbl { color: var(--gray-light); letter-spacing: .12em; margin-right: 12px; }
.article-pager a { color: var(--navy); }
.article-pager a:hover { color: var(--gold); }

/* 相关阅读 */
.related-band { background: var(--paper-warm); padding: 80px 0; margin-top: 80px; }
.related-list { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 0 60px; }
.related-list li {
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
  font-size: 15.5px;
  line-height: 1.7;
}
.related-list a { color: var(--navy); transition: color .2s; }
.related-list a:hover { color: var(--gold); }
.related-list .date {
  display: block;
  font-family: var(--serif-en);
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--gray-light);
  margin-top: 6px;
}

/* 文章页底部 CTA */
.article-cta { background: var(--navy); color: #f5f2ea; padding: 86px 0; text-align: center; }
.article-cta h3 { font-size: 26px; letter-spacing: .1em; margin-bottom: 14px; }
.article-cta p { color: rgba(255,255,255,.66); font-size: 15px; letter-spacing: .12em; margin-bottom: 32px; }

@media (max-width: 820px) {
  .article-hero { padding: 138px 0 50px; }
  .article-title { font-size: 24px; line-height: 1.6; }
  .article-wrap { padding: 0 24px; }
  .article-body { padding: 40px 0 10px; font-size: 16px; line-height: 2; }
  .article-body h2 { font-size: 19px; }
  .related-band { padding: 56px 0; margin-top: 56px; }
  .related-list { grid-template-columns: minmax(0,1fr); gap: 0; }
  .article-cta { padding: 60px 24px; }
  .article-cta h3 { font-size: 21px; }
}

/* ---------- 回到顶部 ---------- */
.back-to-top {
  position: fixed;
  right: 36px; bottom: 36px;
  z-index: 90;
  width: 52px; height: 52px;
  background: var(--navy);
  border: 1px solid var(--gold);
  color: var(--gold-light);
  cursor: pointer;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 2px;
  font-family: var(--serif-cn);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity .3s, visibility .3s, transform .3s, background .25s, color .25s;
}
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--gold); color: #fff; border-color: var(--gold); }
.back-to-top svg { width: 16px; height: 16px; }
.back-to-top .txt { font-size: 11px; letter-spacing: .18em; text-indent: .18em; }
@media (max-width: 820px) { .back-to-top { right: 20px; bottom: 20px; width: 46px; height: 46px; } }

.brand .cn { font-size: 22px; letter-spacing: 0.28em; font-weight: 600; }
.brand .en {
  font-family: var(--serif-en);
  font-size: 10.5px;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,0.62);
  text-transform: uppercase;
  margin-top: 3px;
}

.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav > li { position: relative; display: flex; align-items: center; height: 84px; }
.main-nav > li > a {
  color: var(--navy);
  font-size: 15.5px;
  letter-spacing: 0.14em;
  padding: 8px 14px;
  border-bottom: 1px solid transparent;
  display: block;
  white-space: nowrap;
  transition: color .2s, border-color .2s;
}
.main-nav > li > a:hover {
  color: var(--gold-light);
  border-bottom-color: var(--gold);
}
/* 当前栏目：金色文字 + 金色下划线（常驻标记，不随鼠标离开消失） */
.main-nav > li.active > a,
.main-nav > li.is-current > a {
  color: var(--gold);
  border-bottom-color: var(--gold);
  box-shadow: inset 0 -2px 0 var(--gold);
  font-weight: 600;
}
/* 当前栏目有父级时（打开二/三级栏目页），父级菜单也做标记 */
.main-nav > li.is-current-parent > a,
.main-nav > li:has(.sub-menu li.active) > a {
  color: var(--gold);
  border-bottom-color: var(--gold);
}
.main-nav > li.has-sub > a::after {
  content: "⌄";
  font-size: 12px;
  margin-left: 6px;
  color: var(--gold);
  vertical-align: 1px;
}

/* 二级 / 三级下拉菜单 */
.sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 212px;
  padding: 8px 0;
  background: #fff;
  border: 1px solid var(--line);
  border-top: 2px solid var(--gold);
  box-shadow: 0 16px 36px rgba(14, 34, 64, 0.10);
  display: none;
  z-index: 120;
}
.main-nav li:hover > .sub-menu { display: block; }
.sub-menu li { position: relative; display: block; height: auto; }
.sub-menu a {
  display: block;
  padding: 11px 22px;
  font-size: 14.5px;
  color: var(--navy);
  letter-spacing: 0.08em;
  white-space: nowrap;
  transition: background .2s, color .2s;
}
.sub-menu a:hover,
.sub-menu li.active > a,
.sub-menu li.is-current > a {
  background: var(--paper-warm);
  color: var(--gold);
  font-weight: 600;
  box-shadow: inset 3px 0 0 var(--gold);
}
.sub-menu .has-sub > a::after {
  content: "›";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gold);
  font-size: 15px;
}
.sub-level3 { top: -9px; left: 100%; }

/* ---------- 多语言切换（联系我们之后） ---------- */
.nav-lang { position: relative; }
.lang-toggle {
  display: flex; align-items: center; gap: 6px;
  background: none; border: none; cursor: pointer;
  font-family: var(--serif-cn); font-size: 14.5px;
  letter-spacing: 0.12em; color: var(--navy);
  padding: 8px 12px; line-height: 1;
}
.lang-toggle .globe { width: 15px; height: 15px; flex: 0 0 auto; }
.lang-toggle .caret { font-size: 11px; color: var(--gold); display: inline-block; transition: transform .25s; }
.lang-toggle:hover { color: var(--gold); }
.nav-lang.open .lang-toggle { color: var(--gold); }
.nav-lang.open .lang-toggle .caret { transform: rotate(180deg); }
.lang-panel {
  position: absolute; top: 100%; right: 0;
  min-width: 224px; padding: 6px 0 8px;
  background: #fff; border: 1px solid var(--line); border-top: 2px solid var(--gold);
  box-shadow: 0 16px 36px rgba(14, 34, 64, 0.10);
  display: none; z-index: 130;
}
.nav-lang.open .lang-panel { display: block; }
.lang-panel-title {
  font-size: 11px; letter-spacing: .12em; color: rgba(14,34,64,.42);
  padding: 8px 16px 9px; margin: 0; border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.lang-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 16px; font-size: 14px; color: var(--navy);
  letter-spacing: .04em; white-space: nowrap;
}
.lang-item:hover { background: var(--paper-warm); color: var(--gold); }
.lang-item.is-active { background: #f3efe7; color: var(--gold); font-weight: 600; box-shadow: inset 3px 0 0 var(--gold); }
.lang-item .flag { width: 20px; height: 20px; flex: 0 0 auto; display: block; }
.lang-item .lang-native { font-size: 12px; color: rgba(14,34,64,.45); margin-left: 4px; }

/* ---------- 会员入口（翻译之后） ---------- */
.nav-user { display: flex; align-items: center; }
.nav-user .user-link {
  display: inline-flex; align-items: center;
  padding: 7px 16px; border: none;
  color: var(--gold); font-family: var(--serif-cn);
  font-size: 13.5px; letter-spacing: .12em; line-height: 1;
  white-space: nowrap; transition: all .25s;
}
.nav-user .user-link:hover,
.nav-user .user-link.is-login { background: var(--gold); color: #fff; }
.main-nav > li.nav-user > a { border-bottom: none !important; }
@media (max-width: 1080px) {
  .nav-user { display: block; }
  .nav-user .user-link { display: block; padding: 14px 40px; font-size: 15px; border: none; }
}

/* 隐藏 Google 翻译自带的横幅/提示层，避免挤压版式 */
.goog-te-banner-frame, #goog-gt-tt, .goog-te-balloon-frame, .skiptranslate > iframe { display: none !important; }
body { top: 0 !important; }
.goog-text-highlight { background: none !important; box-shadow: none !important; }
#google_translate_element, .gt-hidden { position: absolute !important; left: -9999px !important; top: -9999px !important; height: 0; overflow: hidden; }

/* 翻译不可用时的底部提示条 */
.lang-tip {
  position: fixed; left: 50%; bottom: 26px; transform: translateX(-50%);
  z-index: 2000; display: flex; align-items: center; gap: 14px;
  max-width: min(92vw, 640px); padding: 13px 44px 13px 20px;
  background: rgba(14, 34, 64, 0.96); color: rgba(255,255,255,.9);
  font-size: 13.5px; line-height: 1.7; letter-spacing: .02em;
  box-shadow: 0 14px 34px rgba(14,34,64,.28);
}
.lang-tip-btn {
  flex: 0 0 auto; background: none; border: 1px solid var(--gold);
  color: var(--gold); font-size: 12.5px; letter-spacing: .1em;
  padding: 6px 12px; cursor: pointer; font-family: var(--serif-cn);
}
.lang-tip-btn:hover { background: var(--gold); color: var(--navy); }
.lang-tip-close {
  position: absolute; right: 12px; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: rgba(255,255,255,.55);
  font-size: 20px; line-height: 1; cursor: pointer; padding: 0 4px;
}
.lang-tip-close:hover { color: #fff; }
@media (max-width: 820px) {
  .lang-tip { left: 16px; right: 16px; bottom: 84px; transform: none; max-width: none; font-size: 12.5px; padding: 12px 40px 12px 16px; }
}

.nav-toggle {
  display: none;
  align-items: center; gap: 9px;
  background: none; border: 1px solid var(--navy);
  color: var(--navy); font-size: 13px; letter-spacing: .2em;
  padding: 9px 14px; cursor: pointer; font-family: var(--serif-cn);
  flex: 0 0 auto; line-height: 1;
}
.nav-toggle .bars { display: inline-flex; flex-direction: column; justify-content: center; gap: 4px; width: 18px; height: 14px; }
.nav-toggle .bars i { display: block; height: 1.6px; background: currentColor; transition: transform .25s, opacity .2s; }
.nav-toggle.active .bars i:nth-child(1) { transform: translateY(5.6px) rotate(45deg); }
.nav-toggle.active .bars i:nth-child(2) { opacity: 0; }
.nav-toggle.active .bars i:nth-child(3) { transform: translateY(-5.6px) rotate(-45deg); }

/* 中等宽度：收紧 logo 与菜单间距，避免菜单挤占导致挤压 */
@media (max-width: 1280px) {
  .header-inner { padding: 0 24px; }
  .brand { gap: 12px; }
  .brand .brand-logo { height: 48px; }
  .main-nav { gap: 0; }
  .main-nav > li > a { font-size: 14.5px; padding: 8px 10px; letter-spacing: 0.1em; }
}

/* ---------- 首屏 Hero ---------- */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #fff;
  background-size: cover;
  background-position: center;
  background-color: var(--navy-deep);
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(8,21,39,.62) 0%, rgba(8,21,39,.55) 55%, rgba(8,21,39,.82) 100%);
}
.hero-inner { position: relative; padding: 0 30px; max-width: 980px; }

.hero .school-en {
  font-family: var(--serif-en);
  font-size: 14px;
  letter-spacing: 0.55em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-bottom: 30px;
}
.hero h1 {
  font-size: 62px;
  letter-spacing: 0.18em;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 30px;
}
.hero .slogan {
  font-size: 20px;
  letter-spacing: 0.32em;
  color: rgba(255,255,255,0.85);
  font-weight: 400;
}
.hero .divider {
  width: 72px; height: 1px;
  background: var(--gold);
  margin: 38px auto;
}
.hero .hero-actions { margin-top: 14px; display: flex; gap: 22px; justify-content: center; flex-wrap: wrap; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  padding: 14px 42px;
  font-size: 15px;
  letter-spacing: 0.22em;
  border: 1px solid var(--gold);
  transition: background .25s, color .25s;
  font-family: var(--serif-cn);
  cursor: pointer;
}
.btn-gold { background: var(--gold); color: #fff; }
.btn-gold:hover { background: transparent; color: var(--gold-light); }
.btn-ghost { background: transparent; color: var(--gold-light); }
.btn-ghost:hover { background: var(--gold); color: #fff; }
.btn-dark { border-color: var(--navy); background: transparent; color: var(--navy); }
.btn-dark:hover { background: var(--navy); color: #fff; }

/* ---------- 数据条 ---------- */
.stats-band { background: var(--navy-deep); color: #e9e4d8; padding: 58px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 30px; text-align: center; }
.stat .num {
  font-family: var(--serif-en);
  font-size: 40px;
  color: var(--gold-light);
  letter-spacing: 0.05em;
}
.stat .num span { font-size: 17px; margin-left: 4px; }
.stat .label { font-size: 14.5px; letter-spacing: 0.22em; margin-top: 8px; color: rgba(255,255,255,.72); }

/* ---------- 图文分栏 ---------- */
.split { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 80px; align-items: center; }
.split .visual {
  position: relative;
  overflow: hidden;
}
.split .visual img { width: 100%; height: 520px; object-fit: cover; filter: saturate(.72) contrast(.98); }
.split .visual::after {
  content: "";
  position: absolute; inset: 0;
  border: 1px solid rgba(179,146,79,.35);
  transform: translate(16px, 16px);
  pointer-events: none;
}
.split h3 { font-size: 26px; color: var(--navy); margin-bottom: 20px; }
.split p { color: var(--gray); margin-bottom: 16px; text-align: justify; }

/* ---------- 卡片 ---------- */
.grid-2 { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 40px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 40px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 32px; }
.grid-2 > *, .grid-3 > *, .grid-4 > * { min-width: 0; }

.card {
  background: #fff;
  border: 1px solid var(--line);
  padding: 46px 40px;
  transition: box-shadow .25s, transform .25s;
}
.card:hover { box-shadow: 0 18px 44px rgba(14,34,64,.09); transform: translateY(-3px); }
.card .no {
  font-family: var(--serif-en);
  font-size: 14px;
  color: var(--gold);
  letter-spacing: 0.25em;
  margin-bottom: 18px;
}
.card h4 { font-size: 20px; color: var(--navy); margin-bottom: 14px; letter-spacing: 0.08em; }
.card p { font-size: 15px; color: var(--gray); }

.card.gold-top { border-top: 3px solid var(--gold); }

/* 项目卡 */
.program-card { background: #fff; border: 1px solid var(--line); display: flex; flex-direction: column; }
.program-card .ph {
  padding: 44px 40px 36px;
  border-bottom: 1px solid var(--line);
}
.program-card .ph .en {
  font-family: var(--serif-en);
  font-size: 13px; letter-spacing: .3em;
  color: var(--gold); text-transform: uppercase; margin-bottom: 12px;
}
.program-card .ph h4 { font-size: 24px; color: var(--navy); letter-spacing: .1em; }
.program-card .pb { padding: 34px 40px 40px; flex: 1; }
.program-card .pb p { color: var(--gray); font-size: 15px; margin-bottom: 14px; }
.program-card .pb ul { margin: 18px 0 26px; }
.program-card .pb li {
  font-size: 14.5px; color: var(--ink);
  padding: 9px 0 9px 22px;
  border-bottom: 1px dashed var(--line);
  position: relative;
}
.program-card .pb li::before {
  content: "";
  position: absolute; left: 0; top: 50%;
  width: 8px; height: 8px;
  background: var(--gold);
  transform: translateY(-50%) rotate(45deg);
}

/* 师资卡 */
.faculty-card { text-align: center; background: #fff; border: 1px solid var(--line); padding: 42px 30px 38px; }
.faculty-card .avatar {
  width: 120px; height: 120px;
  margin: 0 auto 26px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--gold-light);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif-en);
  font-size: 34px;
  letter-spacing: 0.06em;
  border: 3px solid var(--gold);
}
.faculty-card h4 { font-size: 20px; color: var(--navy); letter-spacing: .1em; }
.faculty-card .title-en {
  font-family: var(--serif-en);
  font-size: 12px; color: var(--gray-light);
  letter-spacing: .12em; margin: 6px 0 14px;
}
.faculty-card .role { font-size: 14px; color: var(--gold); letter-spacing: .08em; margin-bottom: 14px; }
.faculty-card p { font-size: 13.8px; color: var(--gray); text-align: left; }

/* 引言块 */
.quote-block {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}
.quote-block .mark { font-family: var(--serif-en); font-size: 60px; color: var(--gold); line-height: 1; }
.quote-block p { font-size: 22px; color: var(--navy); letter-spacing: 0.1em; margin: 18px 0 10px; line-height: 2; }
.quote-block .who { font-size: 14px; color: var(--gray-light); letter-spacing: .2em; }

/* ---------- 页面头图（子页） ---------- */
.page-hero {
  background: var(--navy-deep);
  color: #fff;
  padding: 210px 0 100px;
  text-align: center;
  position: relative;
  background-size: cover;
  background-position: center;
}
.page-hero::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(8,21,39,.72), rgba(8,21,39,.86));
}
.page-hero .container { position: relative; }
.page-hero .kicker { color: var(--gold-light); }
.page-hero h1 { font-size: 42px; letter-spacing: .2em; font-weight: 600; }
.page-hero .sub {
  margin-top: 20px;
  font-size: 16px;
  letter-spacing: .18em;
  color: rgba(255,255,255,.7);
}

/* ---------- 列表条目（学术动态/荣誉） ---------- */
.news-item {
  display: grid;
  grid-template-columns: 130px minmax(0,1fr) auto;
  gap: 40px;
  align-items: center;
  padding: 38px 0;
  border-bottom: 1px solid var(--line);
}
.news-item .date { font-family: var(--serif-en); color: var(--gray-light); font-size: 15px; letter-spacing: .08em; }
.news-item h4 { font-size: 19px; color: var(--navy); letter-spacing: .06em; margin-bottom: 8px; }
.news-item p { font-size: 14.5px; color: var(--gray); }
.news-item .tag {
  font-size: 12.5px; color: var(--gold);
  border: 1px solid var(--gold);
  padding: 5px 16px; letter-spacing: .18em; white-space: nowrap;
}
.news-item h4 a { color: var(--navy); text-decoration: none; transition: color .2s; }
.news-item h4 a:hover { color: var(--gold); }

/* ---------- 分类切换标签（列表页） ---------- */
.cat-tabs {
  display: flex; flex-wrap: wrap; justify-content: center;
  gap: 0; border-bottom: 1px solid var(--line);
}
.cat-tab {
  font-size: 15.5px; color: var(--gray);
  letter-spacing: .14em; padding: 16px 30px 14px;
  text-decoration: none; border-bottom: 2px solid transparent;
  margin-bottom: -1px; transition: color .2s, border-color .2s;
  white-space: nowrap;
}
.cat-tab:hover { color: var(--navy); }
.cat-tab.active {
  color: var(--gold); border-bottom-color: var(--gold); font-weight: bold;
}

/* 列表空状态 */
.list-empty {
  padding: 70px 0; text-align: center;
  color: var(--gray-light); font-size: 15px; letter-spacing: .2em;
}

/* 分页 */
.page-nav { margin-top: 50px; text-align: center; }
.page-nav ul { list-style: none; display: inline-flex; gap: 8px; padding: 0; margin: 0; }
.page-nav li { display: inline-block; }
.page-nav li a, .page-nav li span {
  display: inline-block; min-width: 40px; padding: 9px 14px;
  font-family: var(--serif-en); font-size: 14.5px;
  color: var(--gray); text-decoration: none;
  border: 1px solid var(--line); background: #fff;
  transition: color .2s, border-color .2s;
}
.page-nav li a:hover { color: var(--gold); border-color: var(--gold); }
.page-nav li.active span { color: #fff; background: var(--navy); border-color: var(--navy); }
.page-nav li.disabled span { color: #ccc; background: #faf9f6; cursor: default; }

/* ---------- 证书查询 ---------- */
.cert-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 70px;
  align-items: start;
}
.cert-form-card {
  background: #fff;
  border: 1px solid var(--line);
  border-top: 2px solid var(--gold);
  padding: 50px 48px 46px;
}
.cert-form .field { margin-bottom: 34px; }
.cert-form label {
  display: block;
  font-size: 14px;
  letter-spacing: 0.16em;
  color: var(--navy);
  margin-bottom: 8px;
}
.cert-form input {
  width: 100%;
  padding: 12px 2px;
  border: none;
  border-bottom: 1px solid var(--line);
  background: transparent;
  font-family: var(--serif-cn);
  font-size: 16.5px;
  color: var(--ink);
  letter-spacing: 0.04em;
  outline: none;
  transition: border-color .2s;
  border-radius: 0;
}
.cert-form input:focus { border-bottom-color: var(--gold); }
.cert-form input::placeholder { color: var(--gray-light); font-size: 14.5px; }
.cert-submit {
  width: 100%;
  margin-top: 10px;
  padding: 15px;
  background: var(--gold);
  border: 1px solid var(--gold);
  color: #fff;
  font-family: var(--serif-cn);
  font-size: 15.5px;
  letter-spacing: 0.26em;
  cursor: pointer;
  transition: background .25s, border-color .25s;
}
.cert-submit:hover { background: var(--navy); border-color: var(--navy); }
.cert-submit:disabled { opacity: .65; cursor: default; background: var(--gold); border-color: var(--gold); }

.cert-aside { border-left: 2px solid var(--gold); padding-left: 34px; }
.cert-aside h3 {
  font-size: 19px; color: var(--navy);
  letter-spacing: .08em; margin-bottom: 18px;
}
.cert-aside ul { list-style: none; }
.cert-aside li {
  position: relative; padding-left: 18px;
  font-size: 14.5px; color: var(--gray);
  line-height: 2; margin-bottom: 8px;
}
.cert-aside li::before {
  content: ""; position: absolute; left: 0; top: 14px;
  width: 5px; height: 5px; background: var(--gold);
}
.cert-aside .cert-contact {
  margin-top: 24px; padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 14px; color: var(--gray);
  line-height: 2;
}
.cert-aside .cert-contact strong { color: var(--navy); letter-spacing: .06em; }

.cert-result { margin-top: 64px; }
.cert-result .no-data {
  text-align: center; padding: 66px 20px;
  border: 1px dashed var(--line);
  color: var(--gray-light);
  font-size: 14.5px; letter-spacing: .18em;
  background: #fff;
}
.result-card {
  background: #fff;
  border: 1px solid var(--line);
  border-top: 2px solid var(--gold);
  padding: 44px 48px 40px;
}
.cert-title {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  font-size: 22px; color: var(--navy); letter-spacing: .06em;
  padding-bottom: 20px; margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.cert-badge {
  font-size: 12px; letter-spacing: .16em;
  padding: 3px 13px; border: 1px solid currentColor;
  font-style: normal;
}
.detail-row {
  display: flex; flex-wrap: wrap;
  padding: 11px 0; font-size: 15.5px;
}
.detail-label { width: 132px; color: var(--gray); letter-spacing: .08em; }
.detail-value { flex: 1; color: var(--ink); word-break: break-word; }
.result-card hr { border: 0; height: 1px; background: var(--line); margin: 22px 0 18px; }
.result-foot {
  display: flex; justify-content: space-between; flex-wrap: wrap;
  gap: 10px; font-size: 13px; color: var(--gray-light); letter-spacing: .1em;
}
.result-msg { font-size: 16px; color: var(--navy); line-height: 2; }
.result-hint { margin-top: 12px; font-size: 13.5px; color: var(--gray-light); letter-spacing: .06em; }

.loader {
  display: inline-block; width: 13px; height: 13px;
  border: 2px solid rgba(255,255,255,.4); border-top-color: #fff;
  border-radius: 50%; animation: certspin .6s linear infinite;
  margin-right: 8px; vertical-align: -1px;
}
@keyframes certspin { to { transform: rotate(360deg); } }

/* 荣誉徽章 */
.honor-item {
  text-align: center;
  padding: 44px 28px;
  border: 1px solid var(--line);
  background: #fff;
}
.honor-item .badge {
  width: 72px; height: 72px;
  margin: 0 auto 22px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif-en);
  font-size: 22px;
  color: var(--gold);
}
.honor-item h4 { font-size: 17px; color: var(--navy); letter-spacing: .08em; margin-bottom: 8px; }
.honor-item p { font-size: 13.5px; color: var(--gray); }

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--line); padding: 30px 0; }
.faq-item h4 { font-size: 18px; color: var(--navy); margin-bottom: 12px; letter-spacing: .05em; }
.faq-item h4::before { content: "Q. "; color: var(--gold); font-family: var(--serif-en); }
.faq-item p { color: var(--gray); font-size: 15px; padding-left: 34px; }

/* ---------- 课程大纲 ---------- */
.syllabus { counter-reset: mod; }
.module {
  display: grid;
  grid-template-columns: 90px 260px minmax(0,1fr);
  gap: 34px;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}
.module .idx { font-family: var(--serif-en); font-size: 30px; color: var(--gold); }
.module h4 { font-size: 19px; color: var(--navy); letter-spacing: .06em; line-height: 1.6; }
.module p { font-size: 14.5px; color: var(--gray); }

/* ---------- 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 70px; }
.contact-row { display: flex; gap: 22px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.contact-row .ic {
  font-family: var(--serif-en);
  font-size: 13px; letter-spacing: .1em;
  color: var(--gold);
  border: 1px solid var(--gold);
  width: 52px; height: 52px; flex: none;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
}
.contact-row h4 { font-size: 16px; color: var(--navy); letter-spacing: .1em; margin-bottom: 6px; }
.contact-row p { font-size: 15px; color: var(--gray); }
.contact-row p a { color: var(--gold); border-bottom: 1px solid rgba(179,146,79,.45); padding-bottom: 1px; transition: color .2s, border-color .2s; }
.contact-row p a:hover { color: var(--navy); border-bottom-color: var(--navy); }

.inquiry-form { background: #fff; border: 1px solid var(--line); padding: 50px 46px; }
.inquiry-form h3 { font-size: 22px; color: var(--navy); margin-bottom: 8px; letter-spacing: .1em; }
.inquiry-form .note { font-size: 13.5px; color: var(--gray-light); margin-bottom: 30px; }
.inquiry-form label { display: block; font-size: 14px; color: var(--ink); letter-spacing: .12em; margin: 18px 0 8px; }
.inquiry-form input, .inquiry-form select, .inquiry-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 13px 16px;
  font-family: var(--serif-cn);
  font-size: 15px;
  color: var(--ink);
  outline: none;
}
.inquiry-form input:focus, .inquiry-form select:focus, .inquiry-form textarea:focus { border-color: var(--gold); }
.inquiry-form .btn { width: 100%; margin-top: 28px; text-align: center; }

/* ---------- CTA 预约条 ---------- */
.cta-band {
  background: var(--navy);
  color: #fff;
  text-align: center;
  padding: 100px 0;
}
.cta-band h2 { font-size: 30px; letter-spacing: .18em; margin-bottom: 16px; }
.cta-band p { color: rgba(255,255,255,.65); letter-spacing: .14em; font-size: 15.5px; margin-bottom: 42px; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--navy-deep); color: rgba(255,255,255,.62); padding: 80px 0 0; font-size: 14.5px; }
.footer-grid { display: grid; grid-template-columns: minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1fr); gap: 50px; padding-bottom: 60px; }
.footer-grid h5 {
  color: rgba(255,255,255,.92);
  font-size: 15.5px;
  letter-spacing: .2em;
  margin-bottom: 22px;
  font-weight: 600;
}
.footer-grid li { margin-bottom: 12px; }
.footer-grid a:hover { color: var(--gold-light); }
.footer-brand .cn { color: #fff; font-size: 20px; letter-spacing: .24em; margin-bottom: 6px; }
.footer-brand .en {
  font-family: var(--serif-en);
  font-size: 10.5px; letter-spacing: .28em;
  color: rgba(255,255,255,.45); text-transform: uppercase;
  margin-bottom: 22px;
}
.footer-brand p { line-height: 2; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 26px 0;
  text-align: center;
  font-size: 13px;
  letter-spacing: .1em;
  color: rgba(255,255,255,.38);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 84px; left: 0; right: 0;
    background: rgba(250, 248, 243, 0.99);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 0 26px;
    max-height: calc(100vh - 84px);
    overflow-y: auto;
  }
  .main-nav.open { display: flex; }
  .main-nav > li { display: block; height: auto; }
  .main-nav > li > a { padding: 14px 40px; border-bottom: none; }
  /* 折叠箭头：默认向下，展开后旋转 180° */
  .main-nav > li.has-sub > a::after,
  .sub-menu .has-sub > a::after {
    float: right;
    position: static;
    transform: none;
    display: inline-block;
    margin: 0 40px 0 6px;
    content: "⌄";
    transition: transform .25s;
  }
  /* 触屏上取消 hover 直开：子菜单默认收缩，点击后再展开 */
  .main-nav li:hover > .sub-menu { display: none; }
  .sub-menu {
    position: static;
    display: none;
    min-width: 0;
    background: rgba(14, 34, 64, 0.035);
    border: none;
    box-shadow: none;
    padding: 0;
  }
  .main-nav li.sub-open > .sub-menu { display: block; }
  .main-nav li.sub-open > a::after { transform: rotate(180deg); }
  .sub-menu a { padding: 11px 40px 11px 58px; font-size: 14px; }
  .sub-level3 { top: auto; left: auto; background: rgba(14, 34, 64, 0.035); }
  .sub-level3 a { padding-left: 76px; }
  /* 语言切换：移动端改为菜单内整行，面板就地展开 */
  .nav-lang { display: block; border-top: 1px solid var(--line); margin-top: 6px; padding-top: 6px; }
  .lang-toggle { width: 100%; padding: 14px 40px; font-size: 15px; letter-spacing: .14em; justify-content: flex-start; }
  .lang-toggle .caret { margin-left: auto; margin-right: 0; }
  .lang-panel {
    position: static; min-width: 0; width: auto;
    border: none; box-shadow: none; border-radius: 0;
    background: rgba(14, 34, 64, 0.035); padding: 0;
  }
  .lang-panel-title { padding: 10px 40px; border-bottom: none; }
  .lang-item { padding: 11px 40px 11px 58px; }
  .nav-toggle { display: inline-flex; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .footer-grid { grid-template-columns: minmax(0,1fr) minmax(0,1fr); }
}

@media (max-width: 820px) {
  .container { padding: 0 24px; }
  .section { padding: 80px 0; }
  .hero h1 { font-size: 38px; letter-spacing: .12em; }
  .hero .slogan { font-size: 16px; letter-spacing: .2em; }
  .split { grid-template-columns: minmax(0,1fr); gap: 44px; }
  .split .visual img { height: 320px; }
  .grid-2, .grid-3 { grid-template-columns: minmax(0,1fr); }
  .stats-grid { grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 40px 20px; }
  .news-item { grid-template-columns: minmax(0,1fr); gap: 10px; }
  .cat-tabs { border-bottom: none; }
  .cat-tab { padding: 10px 18px 9px; font-size: 14px; border: 1px solid var(--line); margin: 0 8px 10px 0; }
  .cat-tab.active { background: var(--navy); color: #fff; border-color: var(--navy); }
  .cert-layout { grid-template-columns: minmax(0,1fr); gap: 46px; }
  .cert-form-card { padding: 34px 26px 32px; }
  .cert-aside { border-left: none; border-top: 1px solid var(--line); padding: 30px 0 0; }
  .result-card { padding: 30px 24px 26px; }
  .cert-title { font-size: 18px; }
  .detail-row { flex-direction: column; gap: 4px; }
  .detail-label { width: auto; font-size: 13px; }
  .module { grid-template-columns: minmax(0,1fr) !important; gap: 10px; }
  .contact-grid { grid-template-columns: minmax(0,1fr); gap: 50px; }
  .page-hero h1 { font-size: 30px; }
  .page-hero { padding: 170px 0 80px; }
  .header-inner { padding: 0 16px; gap: 10px; }
  .brand { flex: 0 1 auto; min-width: 0; }
  .brand .brand-logo { height: 40px; max-width: calc(100vw - 130px); }
  .nav-toggle { flex: 0 0 auto; white-space: nowrap; }
  /* 小屏（≤480px）进一步收紧：按钮只留图标、logo 再缩一档，360px 也不溢出 */
  @media (max-width: 480px) {
    .nav-toggle { padding: 9px 10px; }
    .nav-toggle .nav-toggle-txt { display: none; }
    .brand .brand-logo { height: 36px; max-width: calc(100vw - 96px); }
  }
  .section-title { font-size: 27px; }
}

/* ---------- 手机竖屏精修（≤640px）：四列网格改单列，卡片全宽舒展 ---------- */
@media (max-width: 640px) {
  .section { padding: 62px 0; }
  .section-title { font-size: 24px; }
  .section-title .en { font-size: 11px; letter-spacing: .22em; }

  /* 四列卡片（师资 / 教学体系 / 荣誉）改单列全宽，杜绝竖排一字一行 */
  .grid-4 { grid-template-columns: minmax(0,1fr); gap: 20px; }

  /* 师资卡：全宽舒展，头像与内边距收紧 */
  .faculty-card { padding: 32px 26px 30px; }
  .faculty-card .avatar { width: 100px; height: 100px; font-size: 38px; margin-bottom: 18px; }
  .faculty-card h4 { font-size: 19px; }
  .faculty-card .title-en { margin-bottom: 10px; }
  .faculty-card .role { margin-bottom: 10px; }
  .faculty-card p { text-align: center; }

  /* 教学体系深蓝卡：全宽单卡，标题一行，正文两行 */
  .card { padding: 30px 26px; }
  .card .no { margin-bottom: 12px; }
  .card h4 { font-size: 19px; margin-bottom: 10px; }

  /* 荣誉卡：徽章居左、文字居右的横向布局，更紧凑 */
  .honor-item {
    display: flex; align-items: center; gap: 20px;
    text-align: left; padding: 24px 22px;
  }
  .honor-item .badge { width: 56px; height: 56px; margin: 0; flex: 0 0 auto; font-size: 22px; }
  .honor-item h4 { font-size: 16.5px; margin-bottom: 5px; }
  .honor-item p { font-size: 13.5px; }

  /* 课程项目卡（全宽后收紧内边距） */
  .program-card .ph { padding: 32px 26px 26px; }
  .program-card .ph h4 { font-size: 21px; }
  .program-card .pb { padding: 26px 26px 30px; }

  /* 数据条：数字略收 */
  .stat .num { font-size: 34px; }

  /* 内页：头图留白收紧 */
  .page-hero { padding: 138px 0 60px; }
  .page-hero h1 { font-size: 26px; letter-spacing: .08em; }
  .page-hero .sub, .page-hero p { font-size: 13.5px; letter-spacing: .12em; }

  /* 课程大纲行（MBA/EMBA/关于/校友页）：编号与标题同行，描述整行在下 */
  .module { grid-template-columns: auto minmax(0,1fr) !important; gap: 4px 16px; padding: 24px 0; }
  .module .idx { font-size: 20px; line-height: 1.5; }
  .module h4 { grid-column: 2; font-size: 18px; }
  .module p { grid-column: 1 / -1; }

  /* 留言表单 / FAQ */
  .inquiry-form { padding: 32px 22px; }
  .faq-item p { padding-left: 0; }

  /* 学员感悟等引言卡 */
  .grid-3 { gap: 20px; }
  .card.gold-top { padding: 32px 26px; }
}