/* ============================================================
   V4 模板样式 ·「墨咖书院」人文淡色主题
   ----------------------------------------------------------------
   设计语言（综合 sign 设计方案一/二的全屏叙事骨架，
   视觉语言完全独立于 V3 深空科技风）：
     · 色调：宣纸米白 (#F6F0E4) 为底，深咖 (#5C4433) 为骨，
       青瓷绿 (#4E6B5A) 为息，哑金 (#B0915A) 为饰；
       Hero / Banner / 页脚使用深咖→墨绿暖深色块，如原木与墨
     · 字体：标题一律衬线（宋体/Georgia），书卷气、画册感
     · 卡片：暖纸实卡 + 细咖边 + 顶部哑金双线，弃用玻璃拟态
       与霓虹发光；圆角收小（6px），挺括如精装书页
     · 细节：印章式章节签、方形进度刻度、菱形时间轴节点
   结构/类名与 V3 全屏叙事一致（复用 v3-app.js 全部交互）
   ============================================================ */

:root {
  /* 纸面底色 */
  --v3-bg: #F6F0E4;        /* 宣纸米白（主底） */
  --v3-bg2: #EFE5D1;       /* 浅麻纸（次底） */
  --v3-card: #FCF8EF;      /* 暖白卡片纸 */
  /* 头像/封面占位 */
  --v3-purple1: #E9DDC6;
  --v3-purple2: #D8C5A2;
  /* 主色：咖 */
  --v3-navy: #5C4433;      /* 深咖（主色，承旧变量名） */
  --v3-navy2: #4A3626;
  --v3-deep: #334034;      /* 墨绿（深色块收尾） */
  --v3-blue: #7A5C42;      /* 摩卡咖（交互/链接） */
  --v3-blue2: #4E6B5A;     /* 青瓷绿（hover/强调） */
  --v3-violet: #B0915A;    /* 哑金（点缀，承旧变量名） */
  --v3-cyan: #6E8C79;      /* 浅青瓷（标签） */
  --v3-cyan2: #8A6D3F;     /* 棕金（章节签/分类字） */
  /* 文字 */
  --v3-text: #3E2F22;      /* 咖墨 */
  --v3-text-2: #5F4E3C;
  --v3-text-3: #97836A;
  /* 纸卡 */
  --v3-glass-bg: rgba(252, 248, 239, 0.96);
  --v3-glass-bg-hover: #FDFAF2;
  --v3-glass-border: rgba(92, 68, 51, 0.18);
  --v3-header-h: 64px;
  /* 字体栈：标题用粗黑（Windows 雅黑渲染扎实，不发虚）；
     院训/印章节点用楷体保留书卷气；数字与英文用 Georgia */
  --v3-serif: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --v3-kai: 'KaiTi', 'STKaiti', 'Kaiti SC', 'Noto Serif SC', 'SimSun', serif;
  --v3-serif-en: Georgia, 'Times New Roman', 'Noto Serif SC', serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--v3-bg);
  color: var(--v3-text-2);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3 {
  color: var(--v3-text);
  line-height: 1.35;
  font-family: var(--v3-serif);
  font-weight: 700;
}

/* ============ 纸卡（替代玻璃拟态：暖白实底 + 细咖边 + 柔暖影） ============ */
.glass {
  background: var(--v3-glass-bg);
  border: 1px solid var(--v3-glass-border);
  border-radius: 6px;
  box-shadow: 0 10px 30px rgba(92, 68, 51, 0.10);
}

/* ============ 顶部导航（暖白磨砂，咖色文字） ============ */
.v3-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--v3-header-h);
  transition: background 0.3s, box-shadow 0.3s;
  background: rgba(250, 245, 235, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(92, 68, 51, 0.14);
}
.v3-header.is-scrolled {
  background: rgba(252, 248, 239, 0.97);
  box-shadow: 0 4px 20px rgba(92, 68, 51, 0.12);
}
.v3-header-inner {
  max-width: 1400px;
  margin: 0 auto;
  height: 100%;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.v3-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--v3-navy);
  font-weight: 700;
  font-size: 18px;
  font-family: var(--v3-serif);
  letter-spacing: 1px;
  white-space: nowrap;
}
.v3-brand-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 5px;
  background: var(--v3-navy);
  color: #E8C98A;
  font-family: var(--v3-serif-en);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 1px;
  border: 1px solid rgba(232, 201, 138, 0.45);
  box-shadow: 0 4px 12px rgba(92, 68, 51, 0.30);
}
.v3-nav { display: flex; align-items: center; gap: 4px; }
.v3-nav-item { position: relative; }
.v3-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 16px;
  color: var(--v3-text-2);
  font-size: 15px;
  border-radius: 4px;
  transition: color 0.25s, background 0.25s;
  white-space: nowrap;
}
.v3-nav-link:hover { color: var(--v3-navy); background: rgba(176, 145, 90, 0.14); }
.v3-nav-caret { font-size: 10px; opacity: 0.7; }
.v3-nav-sub {
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 160px;
  background: rgba(252, 248, 239, 0.98);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--v3-glass-border);
  border-top: 2px solid var(--v3-violet);
  border-radius: 6px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s;
  box-shadow: 0 14px 36px rgba(92, 68, 51, 0.18);
}
.v3-nav-item:hover .v3-nav-sub,
.v3-nav-item:focus-within .v3-nav-sub {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
/* 桥接 hover 间隙 */
.v3-nav-item:hover::after {
  content: '';
  position: absolute;
  top: 100%; left: -10px; right: -10px;
  height: 14px;
  z-index: 999;
}
.v3-nav-sub a {
  display: block;
  padding: 9px 14px;
  border-radius: 4px;
  font-size: 14px;
  color: var(--v3-text-2);
  transition: all 0.2s;
  white-space: nowrap;
}
.v3-nav-sub a:hover { color: var(--v3-navy); background: rgba(176, 145, 90, 0.14); }
.v3-nav-actions { display: flex; align-items: center; gap: 10px; }
.v3-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--v3-navy);
  font-size: 24px;
  cursor: pointer;
  padding: 4px 8px;
}
.v3-nav-mobile {
  display: none;
  position: fixed;
  top: var(--v3-header-h);
  left: 0; right: 0;
  z-index: 999;
  background: rgba(252, 248, 239, 0.99);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--v3-glass-border);
  padding: 12px 24px 20px;
  max-height: calc(100vh - var(--v3-header-h));
  overflow-y: auto;
  box-shadow: 0 16px 40px rgba(92, 68, 51, 0.16);
}
.v3-nav-mobile.is-open { display: block; }
.v3-nav-mobile .v3-nav-link { display: block; padding: 12px 8px; font-size: 16px; }
.v3-nav-mobile .v3-nav-sub {
  position: static;
  transform: none;
  opacity: 1;
  visibility: visible;
  background: rgba(176, 145, 90, 0.10);
  box-shadow: none;
  border-top: none;
  padding: 4px 0 4px 16px;
  margin: 4px 0;
}
.v3-nav-mobile .v3-nav-item:hover::after { content: none; }

/* ============ 全屏章节容器 ============ */
.v3-snap {
  height: 100vh;
  overflow-y: auto;
  scroll-snap-type: y proximity;
  scroll-behavior: smooth;
}
.v3-chapter {
  position: relative;
  min-height: 100vh;
  scroll-snap-align: start;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.v3-chapter-screen { height: 100vh; }
.v3-chapter-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}
/* 内容章节：暖纸遮罩（纸卡深字） */
.v3-chapter-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(246, 240, 228, 0.60) 0%, rgba(246, 240, 228, 0.80) 55%, rgba(246, 240, 228, 0.93) 100%);
}
.v3-overlay-strong {
  background: linear-gradient(180deg, rgba(246, 240, 228, 0.92) 0%, rgba(239, 229, 209, 0.97) 100%);
}
/* 首屏 Hero：深咖→墨绿暖深色块（如原木与墨） */
.v3-hero .v3-chapter-overlay {
  background:
    radial-gradient(circle at 78% 16%, rgba(203, 167, 107, 0.22), transparent 55%),
    radial-gradient(circle at 12% 88%, rgba(110, 140, 121, 0.20), transparent 52%),
    linear-gradient(125deg, rgba(62, 45, 30, 0.94) 0%, rgba(52, 42, 31, 0.91) 48%, rgba(48, 58, 47, 0.90) 100%);
}
/* 内页 Banner：深咖墨绿暖色块 */
.v3-page-banner .v3-chapter-overlay {
  background:
    radial-gradient(circle at 82% 18%, rgba(203, 167, 107, 0.18), transparent 55%),
    linear-gradient(135deg, rgba(62, 45, 30, 0.94) 0%, rgba(48, 58, 47, 0.90) 100%);
}
.v3-chapter-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 100px 32px 60px;
}
/* 章节签：印章式（金色短竖线 + 疏朗字距） */
.v3-chapter-index {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--v3-cyan2);
  margin-bottom: 16px;
  font-weight: 600;
  font-family: var(--v3-serif);
  padding-left: 14px;
  position: relative;
}
.v3-chapter-index::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 4px; height: 15px;
  background: var(--v3-violet);
  border-radius: 1px;
}
.v3-chapter-title {
  font-size: clamp(32px, 4.5vw, 50px);
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 30px;
  color: var(--v3-navy);
  position: relative;
  padding-bottom: 18px;
}
.v3-chapter-title::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 56px; height: 3px;
  background: var(--v3-violet);
  border-radius: 1px;
}
.v3-faculty-inner .v3-chapter-title::after,
.v3-news-inner .v3-chapter-title::after,
.v3-join-inner .v3-chapter-title::after {
  left: 50%; transform: translateX(-50%);
}

/* Ken Burns 缓慢缩放 */
.v3-kenburns { animation: v3KenBurns 18s ease-in-out infinite alternate; }
@keyframes v3KenBurns {
  from { transform: scale(1); }
  to { transform: scale(1.12); }
}

/* ============ 按钮（挺括直角微圆，实底无辉光） ============ */
.v3-btn-primary,
.v3-btn-glass {
  display: inline-block;
  padding: 13px 34px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.3s;
  border: 1px solid transparent;
}
.v3-btn-primary {
  background: var(--v3-navy);
  color: #F3E9D6;
  box-shadow: 0 6px 18px rgba(62, 45, 30, 0.28);
}
.v3-btn-primary:hover {
  background: var(--v3-blue2);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(78, 107, 90, 0.32);
}
.v3-btn-glass {
  background: rgba(252, 248, 239, 0.92);
  border-color: rgba(92, 68, 51, 0.35);
  color: var(--v3-navy);
}
.v3-btn-glass:hover {
  background: var(--v3-card);
  border-color: var(--v3-violet);
  color: var(--v3-blue2);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(92, 68, 51, 0.16);
}
.v3-link { color: var(--v3-blue2); }

/* ============ 第一章：Hero（深咖暖块 + 宣纸金饰卡） ============ */
.v3-hero .v3-chapter-inner { display: flex; justify-content: center; text-align: center; }
.v3-hero-card {
  max-width: 760px;
  padding: 56px 48px 52px;
  text-align: center;
  background: rgba(252, 248, 239, 0.97);
  border: 1px solid rgba(92, 68, 51, 0.22);
  border-top: 4px double var(--v3-violet);
  border-bottom: 4px double var(--v3-violet);
  box-shadow: 0 30px 80px rgba(20, 12, 4, 0.45);
}
.v3-hero-logo {
  width: 80px; height: 80px;
  margin: 0 auto 24px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 8px;
  font-size: 30px;
  font-weight: 700;
  font-family: var(--v3-serif-en);
  letter-spacing: 2px;
  color: #E8C98A;
  background: var(--v3-navy);
  border: 1px solid rgba(232, 201, 138, 0.5);
  box-shadow: 0 12px 30px rgba(62, 45, 30, 0.4);
  animation: v3Float 4s ease-in-out infinite;
}
@keyframes v3Float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.v3-hero-title {
  font-size: clamp(40px, 6vw, 68px);
  font-weight: 700;
  letter-spacing: 8px;
  margin-bottom: 18px;
  min-height: 1.2em;
  color: var(--v3-navy);
  font-family: var(--v3-serif);
}
.v3-hero-title::after {
  content: '|';
  color: var(--v3-violet);
  animation: v3Blink 1s step-end infinite;
  font-weight: 300;
}
@keyframes v3Blink { 50% { opacity: 0; } }
.v3-hero-sub {
  font-size: clamp(17px, 2.2vw, 22px);
  color: var(--v3-blue2);
  margin-bottom: 18px;
  letter-spacing: 3px;
  font-weight: 600;
  font-family: var(--v3-serif);
}
.v3-hero-meta {
  font-size: 14px;
  color: var(--v3-text-3);
  margin-bottom: 36px;
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}
.v3-hero-meta i { color: var(--v3-violet); opacity: 0.8; font-style: normal; }
.v3-hero-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
/* 滚动提示位于深色 Hero 上，使用米白 */
.v3-scroll-hint {
  position: absolute;
  bottom: 28px; left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  color: rgba(243, 233, 214, 0.88);
  font-size: 13px;
  letter-spacing: 3px;
  font-family: var(--v3-serif);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.v3-scroll-arrow {
  width: 20px; height: 20px;
  border-right: 2px solid rgba(232, 201, 138, 0.9);
  border-bottom: 2px solid rgba(232, 201, 138, 0.9);
  transform: rotate(45deg);
  animation: v3ScrollDown 1.8s ease-in-out infinite;
}
@keyframes v3ScrollDown {
  0% { opacity: 0; transform: rotate(45deg) translate(-4px, -4px); }
  50% { opacity: 1; }
  100% { opacity: 0; transform: rotate(45deg) translate(4px, 4px); }
}

/* ============ 第二章：全屏轮播（暖调大图 + 宣纸卡） ============ */
.v3-carousel { position: absolute; inset: 0; }
.v3-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1s ease;
}
.v3-slide.is-active { opacity: 1; visibility: visible; }
.v3-slide .v3-chapter-inner { display: flex; align-items: center; }
.v3-slide-card {
  max-width: 620px;
  padding: 44px 40px 40px;
  background: rgba(252, 248, 239, 0.95);
  border: 1px solid rgba(92, 68, 51, 0.20);
  border-top: 4px double var(--v3-violet);
  box-shadow: 0 24px 60px rgba(40, 26, 12, 0.25);
}
.v3-slide-card p { font-size: 17px; line-height: 1.95; color: var(--v3-text-2); }
.v3-slide-card strong { color: var(--v3-navy); font-weight: 700; }
.v3-slide-stats { max-width: 720px; }
.v3-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 28px;
}
.v3-stat-num {
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 700;
  font-family: var(--v3-serif-en);
  color: var(--v3-navy);
  letter-spacing: 1px;
}
.v3-stat-label { font-size: 14px; color: var(--v3-text-3); margin-top: 6px; letter-spacing: 1px; }
.v3-carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  width: 50px; height: 50px;
  border-radius: 6px;
  border: 1px solid rgba(92, 68, 51, 0.30);
  background: rgba(252, 248, 239, 0.92);
  color: var(--v3-navy);
  font-size: 26px;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  box-shadow: 0 6px 18px rgba(40, 26, 12, 0.16);
}
.v3-carousel-arrow:hover { background: var(--v3-navy); border-color: var(--v3-navy); color: #E8C98A; }
.v3-carousel-prev { left: 28px; }
.v3-carousel-next { right: 28px; }
.v3-carousel-dots {
  position: absolute;
  bottom: 36px; left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  gap: 10px;
}
.v3-carousel-dots button {
  width: 26px; height: 3px;
  border-radius: 0;
  border: none;
  background: rgba(62, 47, 34, 0.25);
  cursor: pointer;
  transition: all 0.3s;
  padding: 0;
}
.v3-carousel-dots button.is-active {
  background: var(--v3-violet);
  width: 44px;
}

/* ============ 第三章：科研滚动叙事 ============ */
.v3-research-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
  max-width: 1280px;
}
.v3-research-sticky {
  position: sticky;
  top: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.v3-research-lead { color: var(--v3-text-3); margin-bottom: 36px; font-size: 16px; line-height: 1.9; }
.v3-research-visual {
  padding: 32px;
  border-radius: 6px;
  border-top: 3px solid var(--v3-violet);
}
.v3-research-progress {
  height: 4px;
  border-radius: 0;
  background: rgba(92, 68, 51, 0.12);
  overflow: hidden;
  margin-bottom: 20px;
}
.v3-research-progress i {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--v3-navy), var(--v3-violet), var(--v3-blue2));
  transition: width 0.5s ease;
}
.v3-research-visual-label {
  font-size: 22px;
  font-weight: 700;
  font-family: var(--v3-serif);
  letter-spacing: 2px;
  color: var(--v3-navy);
}
.v3-research-stories { display: flex; flex-direction: column; gap: 28px; padding: 40px 0; }
.v3-story {
  padding: 30px 30px 28px;
  border-radius: 6px;
  opacity: 0.45;
  transform: translateY(20px);
  transition: all 0.5s ease;
  display: block;
  background: var(--v3-glass-bg);
  border: 1px solid var(--v3-glass-border);
  border-left: 3px solid transparent;
  box-shadow: 0 8px 26px rgba(92, 68, 51, 0.08);
}
.v3-story.is-active {
  opacity: 1;
  transform: translateY(0);
  border-left-color: var(--v3-violet);
  box-shadow: 0 12px 36px rgba(92, 68, 51, 0.16);
}
.v3-story:hover { opacity: 1; border-left-color: var(--v3-blue2); transform: translateY(-4px); }
.v3-story-num {
  font-family: var(--v3-serif-en);
  font-size: 15px;
  color: var(--v3-violet);
  letter-spacing: 2px;
  font-weight: 700;
}
.v3-story h3 { font-size: 20px; margin: 10px 0 12px; color: var(--v3-navy); letter-spacing: 0.5px; }
.v3-story p { font-size: 15px; color: var(--v3-text-3); line-height: 1.9; }
.v3-story-tag {
  display: inline-block;
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 3px;
  background: rgba(78, 107, 90, 0.10);
  color: var(--v3-blue2);
  border: 1px solid rgba(78, 107, 90, 0.30);
  letter-spacing: 1px;
}
.v3-story-cta {
  text-align: center;
  background: linear-gradient(135deg, rgba(176, 145, 90, 0.12), rgba(78, 107, 90, 0.08));
  border-color: rgba(176, 145, 90, 0.40);
  border-left-color: var(--v3-violet);
}
.v3-story-cta h3 { color: var(--v3-navy); font-size: 23px; letter-spacing: 1px; }
.v3-story-cta:hover h3 { color: var(--v3-blue2); }

/* ============ 第四章：师资 ============ */
.v3-faculty-inner { text-align: center; }
.v3-faculty-inner .v3-chapter-index,
.v3-faculty-inner .v3-chapter-title { display: block; }
.v3-faculty-inner .v3-chapter-index::before { display: none; }
.v3-faculty-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
  margin: 36px 0 32px;
}
.v3-faculty-card {
  padding: 26px 16px 22px;
  text-align: center;
  border-radius: 6px;
  transition: all 0.35s;
  display: block;
  background: var(--v3-glass-bg);
  border: 1px solid var(--v3-glass-border);
  box-shadow: 0 6px 20px rgba(92, 68, 51, 0.08);
}
.v3-faculty-card:hover {
  transform: translateY(-6px);
  border-color: rgba(176, 145, 90, 0.55);
  box-shadow: 0 14px 34px rgba(92, 68, 51, 0.18);
}
.v3-faculty-img {
  width: 72px; height: 72px;
  border-radius: 50%;
  margin: 0 auto 14px;
  object-fit: cover;
  border: 2px solid rgba(176, 145, 90, 0.55);
  box-shadow: 0 4px 14px rgba(92, 68, 51, 0.18);
}
.v3-faculty-img-ph {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--v3-purple1), var(--v3-purple2));
  color: var(--v3-navy);
  font-size: 26px;
  font-weight: 700;
  font-family: var(--v3-serif);
}
.v3-faculty-name { font-size: 17px; margin-bottom: 6px; color: var(--v3-navy); letter-spacing: 1px; }
.v3-faculty-meta { font-size: 12.5px; color: var(--v3-text-3); line-height: 1.6; }
.v3-faculty-page-grid { grid-template-columns: repeat(4, 1fr); }
.v3-faculty-card-link { text-decoration: none; color: inherit; cursor: pointer; }

/* ============ 师资详情名片 ============ */
.v4-faculty-detail-head {
  display: flex; gap: 28px; align-items: center;
  padding-bottom: 26px; margin-bottom: 30px;
  border-bottom: 1px dashed rgba(176, 145, 90, 0.4);
}
.v4-faculty-detail-avatar {
  width: 112px; height: 112px; flex-shrink: 0;
  border-radius: 50%; object-fit: cover;
  border: 3px solid rgba(176, 145, 90, 0.55);
  box-shadow: 0 6px 22px rgba(92, 68, 51, 0.2);
  font-size: 42px;
}
.v4-faculty-detail-name {
  font-size: 28px; color: var(--v3-navy);
  letter-spacing: 2px; margin-bottom: 14px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.v4-faculty-detail-field { font-size: 15px; color: var(--v3-text-2); margin-bottom: 10px; letter-spacing: 1px; }
.v4-faculty-detail-email { font-size: 14px; color: var(--v3-text-3); }
.v4-faculty-detail-email a { color: var(--v3-purple2); text-decoration: none; }
.v4-faculty-detail-achievement {
  background: rgba(176, 145, 90, 0.09);
  border-left: 3px solid var(--v3-purple2);
  padding: 16px 20px; margin-bottom: 10px;
  border-radius: 0 6px 6px 0;
  font-size: 14px; line-height: 2; color: var(--v3-text-2);
  white-space: pre-line;
}
@media (max-width: 640px) {
  .v4-faculty-detail-head { flex-direction: column; text-align: center; gap: 16px; }
  .v4-faculty-detail-name { justify-content: center; font-size: 23px; }
}

/* ============ 第五章：时间轴（咖线 + 菱形金节点） ============ */
.v3-edu-inner { max-width: 900px; }
.v3-timeline {
  position: relative;
  padding-left: 40px;
}
.v3-timeline::before {
  content: '';
  position: absolute;
  left: 8px; top: 8px; bottom: 8px;
  width: 2px;
  background: rgba(92, 68, 51, 0.28);
}
.v3-tl-item { position: relative; margin-bottom: 36px; }
.v3-tl-item:last-child { margin-bottom: 0; }
.v3-tl-dot {
  position: absolute;
  left: -39px; top: 26px;
  width: 14px; height: 14px;
  transform: rotate(45deg);
  background: var(--v3-card);
  border: 2px solid var(--v3-violet);
  box-shadow: 0 0 0 4px rgba(176, 145, 90, 0.14);
}
.v3-tl-card { padding: 26px 28px 24px; border-radius: 6px; border-top: 3px solid var(--v3-violet); }
.v3-tl-card h3 { font-size: 20px; color: var(--v3-navy); margin-bottom: 10px; letter-spacing: 1px; }
.v3-tl-card p { color: var(--v3-text-3); font-size: 15px; line-height: 1.9; }
.v3-timeline-static { max-width: 860px; margin: 0 auto; }
.v3-center-btn { text-align: center; margin-top: 40px; }

/* ============ 第六章：Bento 新闻 ============ */
.v3-news-inner { text-align: center; }
.v3-bento {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 180px;
  gap: 18px;
  margin-top: 36px;
  text-align: left;
}
.v3-bento-item {
  border-radius: 6px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  position: relative;
  overflow: hidden;
  transition: all 0.35s;
  background-color: var(--v3-glass-bg);
  border: 1px solid var(--v3-glass-border);
  box-shadow: 0 6px 20px rgba(92, 68, 51, 0.08);
}
.v3-bento-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--v3-violet);
  opacity: 0;
  transition: opacity 0.3s;
}
.v3-bento-item:hover {
  transform: translateY(-5px);
  border-color: rgba(176, 145, 90, 0.55);
  box-shadow: 0 16px 40px rgba(92, 68, 51, 0.18);
}
.v3-bento-item:hover::before { opacity: 1; }
.v3-bento-lg { grid-column: span 2; grid-row: span 2; }
.v3-bento-md { grid-column: span 2; }
.v3-bento-cat {
  font-size: 12px;
  color: var(--v3-blue2);
  letter-spacing: 2px;
  margin-bottom: 8px;
  font-weight: 600;
  font-family: var(--v3-serif);
}
.v3-bento-title {
  font-size: 16px;
  line-height: 1.6;
  color: var(--v3-navy);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.v3-bento-lg .v3-bento-title { font-size: 23px; -webkit-line-clamp: 3; letter-spacing: 0.5px; }
.v3-bento-date { font-size: 12.5px; color: var(--v3-text-3); margin-top: 10px; font-family: var(--v3-serif-en); }
.v3-bento-more {
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, rgba(176, 145, 90, 0.12), rgba(78, 107, 90, 0.08));
  border-color: rgba(176, 145, 90, 0.40);
}
.v3-bento-more::before { display: none; }
.v3-bento-more h3 { color: var(--v3-navy); font-size: 20px; letter-spacing: 1px; }
.v3-bento-more:hover h3 { color: var(--v3-blue2); }
.v3-bento-more p { color: var(--v3-text-3); font-size: 13px; margin-top: 8px; }

/* ============ 第七章：合作与加入 ============ */
.v3-join-inner { text-align: center; }
.v3-logo-wrap {
  overflow: hidden;
  margin: 36px 0 44px;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.v3-logo-inner {
  display: flex;
  gap: 18px;
  width: max-content;
  animation: v3Marquee 28s linear infinite;
}
.v3-logo-wrap:hover .v3-logo-inner { animation-play-state: paused; }
@keyframes v3Marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.v3-logo-item {
  flex: 0 0 auto;
  min-width: 170px;
  padding: 22px 20px;
  border-radius: 6px;
  text-align: center;
  color: var(--v3-text-2);
  font-weight: 600;
  font-size: 15px;
  font-family: var(--v3-serif);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--v3-glass-bg);
  border: 1px solid var(--v3-glass-border);
  box-shadow: 0 6px 18px rgba(92, 68, 51, 0.08);
}
.v3-logo-item img { max-height: 44px; width: auto; margin: 0 auto; opacity: 0.9; }
.v3-join-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  max-width: 860px;
  margin: 0 auto;
  text-align: left;
}
.v3-join-card { padding: 32px 32px 30px; border-radius: 6px; border-top: 4px double var(--v3-violet); }
.v3-join-card h3 { font-size: 20px; margin-bottom: 18px; color: var(--v3-navy); letter-spacing: 2px; }
.v3-join-card p { color: var(--v3-text-3); font-size: 15px; line-height: 2.1; }
.v3-join-btns { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 18px; }

/* ============ 页脚（深咖墨绿暖色块，如书院夜色） ============ */
.v3-footer {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  background: linear-gradient(160deg, #433322 0%, #382C20 55%, #2C382E 100%);
  scroll-snap-align: start;
}
.v3-snap .v3-footer { min-height: 100vh; }
.v3-footer-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 26% 20%, rgba(203, 167, 107, 0.18), transparent 55%),
    radial-gradient(circle at 74% 80%, rgba(110, 140, 121, 0.16), transparent 55%),
    radial-gradient(circle at 50% 100%, rgba(203, 167, 107, 0.10), transparent 60%);
}
.v3-footer-inner { position: relative; z-index: 2; padding: 60px 24px; }
.v3-footer-slogan {
  font-size: clamp(28px, 4vw, 46px);
  font-weight: 700;
  letter-spacing: 8px;
  margin-bottom: 30px;
  color: #F0E4CE;
  font-family: var(--v3-serif);
}
.v3-footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 700;
  font-family: var(--v3-serif);
  letter-spacing: 1px;
  color: #F6F0E4;
  margin-bottom: 20px;
}
.v3-footer-line { color: rgba(240, 228, 206, 0.68); font-size: 14px; letter-spacing: 1px; }
.v3-footer-sub { margin-top: 8px; font-size: 13px; color: rgba(240, 228, 206, 0.42); }

/* ============ 章节进度指示（方形书刻，自适应深浅） ============ */
.v3-chapter-dots {
  position: fixed;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.v3-chapter-dots a {
  width: 10px; height: 10px;
  border-radius: 2px;
  background: #FFFFFF;
  mix-blend-mode: difference;
  position: relative;
  transition: all 0.3s;
}
.v3-chapter-dots a.is-active {
  background: var(--v3-violet);
  mix-blend-mode: normal;
  border: 1px solid #F6F0E4;
  box-shadow: 0 0 0 3px rgba(246, 240, 228, 0.45), 0 0 12px rgba(176, 145, 90, 0.7);
  transform: scale(1.25) rotate(45deg);
}
.v3-chapter-dots a i {
  position: absolute;
  right: 22px; top: 50%;
  transform: translateY(-50%);
  font-style: normal;
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--v3-navy);
  background: rgba(252, 248, 239, 0.97);
  border: 1px solid var(--v3-glass-border);
  padding: 3px 10px;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
  box-shadow: 0 4px 14px rgba(92, 68, 51, 0.16);
}
.v3-chapter-dots a:hover i,
.v3-chapter-dots a.is-active i { opacity: 1; }

/* ============ AI 悬浮按钮（咖底金字） ============ */
.v3-ai-btn {
  position: fixed;
  right: 22px;
  bottom: 28px;
  z-index: 900;
  width: 54px; height: 54px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: var(--v3-serif-en);
  letter-spacing: 1px;
  color: #E8C98A;
  background: var(--v3-navy);
  border: 1px solid rgba(232, 201, 138, 0.4);
  box-shadow: 0 8px 24px rgba(62, 45, 30, 0.38);
  cursor: pointer;
  animation: v3Float 3.5s ease-in-out infinite;
}

/* ============ 滚动揭示 ============ */
.v3-chapter [class*="-card"],
.v3-chapter .v3-tl-item,
.v3-chapter .v3-bento-item,
.v3-chapter .v3-stat,
.v3-chapter .v3-story {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.v3-chapter.is-in [class*="-card"],
.v3-chapter.is-in .v3-tl-item,
.v3-chapter.is-in .v3-bento-item,
.v3-chapter.is-in .v3-stat,
.v3-chapter.is-in .v3-story,
.is-in {
  opacity: 1 !important;
  transform: translateY(0) !important;
}
.v3-chapter.is-in .v3-tl-item:nth-child(1) { transition-delay: 0.05s; }
.v3-chapter.is-in .v3-tl-item:nth-child(2) { transition-delay: 0.18s; }
.v3-chapter.is-in .v3-tl-item:nth-child(3) { transition-delay: 0.31s; }
.v3-chapter.is-in .v3-tl-item:nth-child(4) { transition-delay: 0.44s; }
.v3-chapter.is-in .v3-faculty-card:nth-child(2) { transition-delay: 0.08s; }
.v3-chapter.is-in .v3-faculty-card:nth-child(3) { transition-delay: 0.16s; }
.v3-chapter.is-in .v3-faculty-card:nth-child(4) { transition-delay: 0.24s; }
.v3-chapter.is-in .v3-faculty-card:nth-child(5) { transition-delay: 0.32s; }
.v3-chapter.is-in .v3-faculty-card:nth-child(6) { transition-delay: 0.4s; }
.v3-chapter.is-in .v3-bento-item:nth-child(2) { transition-delay: 0.08s; }
.v3-chapter.is-in .v3-bento-item:nth-child(3) { transition-delay: 0.16s; }
.v3-chapter.is-in .v3-bento-item:nth-child(4) { transition-delay: 0.24s; }
.v3-chapter.is-in .v3-bento-item:nth-child(5) { transition-delay: 0.32s; }
.v3-chapter.is-in .v3-bento-item:nth-child(6) { transition-delay: 0.4s; }
/* 轮播幻灯片内的卡片不受章节揭示影响 */
.v3-slide .v3-slide-card { opacity: 1; transform: none; }
/* 科研故事由滚动叙事单独控制透明度 */
.v3-research .v3-story { opacity: 0.45; }
.v3-research.is-in .v3-story { opacity: 0.45 !important; transform: translateY(20px) !important; }
.v3-research .v3-story.is-active { opacity: 1 !important; transform: translateY(0) !important; }
.v3-research .v3-story:hover { opacity: 1 !important; }

/* ============ 内页 ============ */
.v3-container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.v3-page-banner {
  position: relative;
  min-height: 52vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 100px 24px 50px;
}
.v3-page-banner-sm { min-height: 42vh; }
.v3-page-banner-inner { position: relative; z-index: 2; max-width: 900px; }
.v3-page-banner .v3-chapter-index { color: #EFD9A7; }
.v3-page-banner .v3-chapter-index::before { background: #EFD9A7; }
.v3-page-banner h1 {
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 700;
  letter-spacing: 5px;
  margin-bottom: 14px;
  color: #F6F0E4;
  font-family: var(--v3-serif);
}
.v3-page-banner p { color: rgba(240, 228, 206, 0.85); font-size: 17px; letter-spacing: 1.5px; }
.v3-page-body {
  padding: 64px 0 80px;
  background: linear-gradient(180deg, var(--v3-bg) 0%, var(--v3-bg2) 100%);
  position: relative;
}
.v3-block-title {
  font-size: 26px;
  margin: 56px 0 24px;
  color: var(--v3-navy);
  letter-spacing: 2px;
}

/* 筛选标签 */
.v3-tags { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 40px; justify-content: center; }
.v3-tag {
  padding: 8px 22px;
  border-radius: 4px;
  border: 1px solid rgba(92, 68, 51, 0.25);
  color: var(--v3-text-2);
  font-size: 14px;
  letter-spacing: 1px;
  transition: all 0.25s;
  background: rgba(252, 248, 239, 0.85);
}
.v3-tag:hover, .v3-tag.active {
  border-color: var(--v3-navy);
  color: #F3E9D6;
  background: var(--v3-navy);
  box-shadow: 0 4px 14px rgba(62, 45, 30, 0.22);
}

/* 新闻列表 */
.v3-news-list { display: flex; flex-direction: column; gap: 20px; }
.v3-news-item {
  display: grid;
  grid-template-columns: 280px 1fr;
  border-radius: 6px;
  overflow: hidden;
  transition: all 0.3s;
  background: var(--v3-glass-bg);
  border: 1px solid var(--v3-glass-border);
  box-shadow: 0 6px 20px rgba(92, 68, 51, 0.08);
}
.v3-news-item:hover { border-color: rgba(176, 145, 90, 0.55); transform: translateY(-3px); box-shadow: 0 14px 34px rgba(92, 68, 51, 0.16); }
.v3-news-cover { height: 100%; min-height: 180px; object-fit: cover; }
.v3-news-cover-ph {
  background: linear-gradient(135deg, var(--v3-purple1), var(--v3-purple2));
  min-height: 180px;
}
.v3-news-body { padding: 26px 28px; }
.v3-news-cat { font-size: 13px; color: var(--v3-blue2); letter-spacing: 2px; font-weight: 600; font-family: var(--v3-serif); }
.v3-news-title { font-size: 19px; margin: 10px 0; color: var(--v3-navy); letter-spacing: 0.5px; }
.v3-news-summary { color: var(--v3-text-3); font-size: 14.5px; line-height: 1.85; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.v3-news-list-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.v3-news-list-2 .v3-news-item { grid-template-columns: 1fr; }

/* 卡片网格（科研） */
.v3-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.v3-card {
  padding: 28px 26px 26px;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s;
  background: var(--v3-glass-bg);
  border: 1px solid var(--v3-glass-border);
  border-top: 3px solid transparent;
  box-shadow: 0 6px 20px rgba(92, 68, 51, 0.08);
}
.v3-card:hover { transform: translateY(-5px); border-color: rgba(176, 145, 90, 0.55); border-top-color: var(--v3-violet); box-shadow: 0 16px 38px rgba(92, 68, 51, 0.16); }
.v3-card-tag {
  align-self: flex-start;
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 3px;
  background: rgba(78, 107, 90, 0.10);
  color: var(--v3-blue2);
  border: 1px solid rgba(78, 107, 90, 0.30);
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.v3-card-title { font-size: 18px; margin-bottom: 10px; color: var(--v3-navy); letter-spacing: 0.5px; }
.v3-card-desc { color: var(--v3-text-3); font-size: 14px; line-height: 1.85; flex: 1; }
.v3-card-more { margin-top: 16px; font-size: 13px; color: var(--v3-blue2); font-weight: 600; letter-spacing: 1px; }

/* 文章 */
.v3-article-wrap { max-width: 860px; }
.v3-article { padding: 44px 48px; border-radius: 8px; background: var(--v3-glass-bg); border: 1px solid var(--v3-glass-border); border-top: 4px double var(--v3-violet); }
.v3-article-cover { width: 100%; border-radius: 6px; margin-bottom: 32px; box-shadow: 0 12px 32px rgba(92, 68, 51, 0.16); }
.v3-article-content { font-size: 16.5px; line-height: 2.05; color: var(--v3-text-2); }
.v3-article-content p { margin-bottom: 1.2em; }
.v3-article-content img { border-radius: 6px; margin: 16px auto; }
.v3-article-content h2, .v3-article-content h3 { margin: 1.2em 0 0.6em; color: var(--v3-navy); letter-spacing: 1px; }
.v3-article-btns { display: flex; gap: 14px; margin-top: 40px; flex-wrap: wrap; }

/* 单页侧边栏布局 */
.v3-page-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 28px;
  align-items: start;
}
.v3-sidebar { padding: 24px 20px; border-radius: 6px; position: sticky; top: 88px; background: var(--v3-glass-bg); border: 1px solid var(--v3-glass-border); border-top: 3px solid var(--v3-violet); }
.v3-sidebar-title { font-size: 17px; color: var(--v3-navy); margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--v3-glass-border); letter-spacing: 2px; }
.v3-sidebar-link {
  display: block;
  padding: 10px 14px;
  border-radius: 4px;
  font-size: 14.5px;
  color: var(--v3-text-2);
  transition: all 0.2s;
  margin-bottom: 4px;
}
.v3-sidebar-link:hover, .v3-sidebar-link.active {
  color: #F3E9D6;
  background: var(--v3-navy);
}
.v3-page-content { min-width: 0; }

/* 联系页 */
.v3-contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 960px;
}
.v3-form { display: flex; flex-direction: column; gap: 12px; }
.v3-form input, .v3-form textarea {
  padding: 12px 16px;
  border-radius: 4px;
  border: 1px solid rgba(92, 68, 51, 0.25);
  background: #FDFAF2;
  color: var(--v3-text);
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
}
.v3-form input::placeholder, .v3-form textarea::placeholder { color: #B3A28A; }
.v3-form input:focus, .v3-form textarea:focus {
  outline: none;
  border-color: var(--v3-violet);
  box-shadow: 0 0 0 3px rgba(176, 145, 90, 0.18);
}
.v3-form button { border: none; font-family: inherit; }

/* 分页 */
.v3-pagination { margin-top: 48px; text-align: center; }
.v3-pagination ul { display: inline-flex; gap: 6px; list-style: none; }
.v3-pagination a, .v3-pagination span {
  display: inline-block;
  padding: 8px 15px;
  border-radius: 4px;
  border: 1px solid var(--v3-glass-border);
  color: var(--v3-text-2);
  font-size: 14px;
  transition: all 0.2s;
  background: rgba(252, 248, 239, 0.85);
}
.v3-pagination a:hover { border-color: var(--v3-navy); color: var(--v3-navy); }
.v3-pagination .active span { background: var(--v3-navy); border-color: var(--v3-navy); color: #F3E9D6; }
.v3-pagination .disabled span { opacity: 0.4; }

.v3-empty { padding: 80px 0; text-align: center; color: var(--v3-text-3); }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .v3-faculty-grid { grid-template-columns: repeat(3, 1fr); }
  .v3-faculty-page-grid { grid-template-columns: repeat(3, 1fr); }
  .v3-card-grid { grid-template-columns: repeat(2, 1fr); }
  .v3-bento { grid-template-columns: repeat(2, 1fr); }
  .v3-bento-lg { grid-column: span 2; grid-row: span 2; }
  .v3-bento-md { grid-column: span 2; }
  .v3-research-inner { grid-template-columns: 1fr; gap: 20px; }
  .v3-research-sticky { position: relative; min-height: auto; padding: 60px 0 0; }
}

@media (max-width: 768px) {
  .v3-nav { display: none; }
  .v3-menu-toggle { display: block; }
  .v3-header-inner { padding: 0 18px; }
  .v3-chapter-inner { padding: 88px 20px 48px; }
  .v3-container { padding: 0 20px; }
  .v3-hero-card { padding: 40px 24px 38px; }
  .v3-hero-title { letter-spacing: 4px; }
  .v3-slide-card { padding: 32px 24px; }
  .v3-stat-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .v3-faculty-grid, .v3-faculty-page-grid { grid-template-columns: repeat(2, 1fr); }
  .v3-card-grid { grid-template-columns: 1fr; }
  .v3-bento { grid-template-columns: 1fr; grid-auto-rows: 160px; }
  .v3-bento-lg, .v3-bento-md { grid-column: span 1; grid-row: span 1; }
  .v3-bento-lg { grid-row: span 2; }
  .v3-join-cards, .v3-contact-wrap { grid-template-columns: 1fr; }
  .v3-news-item { grid-template-columns: 1fr; }
  .v3-news-cover { min-height: 200px; }
  .v3-news-list-2 { grid-template-columns: 1fr; }
  .v3-page-layout { grid-template-columns: 1fr; }
  .v3-sidebar { position: static; }
  .v3-article { padding: 28px 22px; }
  .v3-carousel-arrow { width: 40px; height: 40px; font-size: 22px; }
  .v3-carousel-prev { left: 10px; }
  .v3-carousel-next { right: 10px; }
  .v3-chapter-dots { display: none; }
  .v3-ai-btn { width: 46px; height: 46px; right: 16px; bottom: 20px; }
  .v3-timeline { padding-left: 32px; }
  .v3-tl-dot { left: -31px; }
}

@media (prefers-reduced-motion: reduce) {
  .v3-kenburns, .v3Float, .v3Marquee, .v3-scroll-arrow { animation: none !important; }
  html { scroll-behavior: auto; }
}

/* ============================================================
   V4 首页专属模块：「书院长卷」自然长滚动
   （与 V3 全屏幻灯片/轮播/打字机/sticky/Bento 结构不同）
   ============================================================ */
:root {
  --v3-seal: #9C4A38;          /* 印泥赭红：印章标签 */
  --v3-gold: #E7CB92;          /* 亮金：深块上的金色文字/装饰（保证对比度） */
}

.v4-page { background: var(--v3-bg); }

/* ---------- 卷首 Hero：深咖暖块 + 左右分栏 + 装裱画框 ---------- */
.v4-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--v3-header-h);
}
.v4-hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 32px 80px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: center;
}
.v4-hero-kicker {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 3.5px;
  color: #F9F1DC;
  margin-bottom: 22px;
  font-family: var(--v3-serif-en);
  font-weight: 700;
  padding: 7px 0 7px 16px;
  border-left: 3px solid #F9F1DC;
  text-shadow: 0 1px 10px rgba(20, 12, 4, 0.5);
  background: linear-gradient(90deg, rgba(249, 241, 220, 0.10), transparent);
}
.v4-hero-title {
  font-size: clamp(42px, 5.6vw, 66px);
  font-weight: 700;
  letter-spacing: 10px;
  color: #F6F0E4;
  margin-bottom: 16px;
  font-family: var(--v3-serif);
}
.v4-hero-motto {
  font-size: clamp(20px, 2.6vw, 27px);
  color: #F5E6C4;
  letter-spacing: 6px;
  margin-bottom: 22px;
  font-family: var(--v3-kai);
  font-weight: 700;
  text-shadow: 0 2px 12px rgba(20, 12, 4, 0.4);
}
.v4-hero-desc {
  font-size: 15.5px;
  line-height: 2;
  color: rgba(246, 238, 224, 0.92);
  margin-bottom: 36px;
  max-width: 560px;
}
.v4-hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.v4-btn-gold {
  display: inline-block;
  padding: 13px 36px;
  border-radius: 4px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 3px;
  background: linear-gradient(135deg, #E6CB8F, #D4B578);
  color: #3E2D1E;
  border: 1px solid rgba(240, 221, 168, 0.8);
  box-shadow: 0 8px 22px rgba(20, 12, 4, 0.35);
  transition: all 0.3s;
  cursor: pointer;
}
.v4-btn-gold:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(20, 12, 4, 0.45); background: linear-gradient(135deg, #F0D89E, #E0C384); }
/* 次按钮：宣纸白实心（深咖底上同样醒目，与金按钮一金一白） */
.v4-btn-outline-light {
  background: #F6EFDD;
  border: 1px solid #F6EFDD;
  color: #43321F;
  box-shadow: 0 8px 22px rgba(20, 12, 4, 0.35);
}
.v4-btn-outline-light:hover {
  background: linear-gradient(135deg, #F0D89E, #E0C384);
  border-color: #F0D89E;
  color: #3E2D1E;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(20, 12, 4, 0.45);
}
.v4-btn-ink { background: var(--v3-navy); color: #F3E9D6; border: none; box-shadow: 0 6px 18px rgba(62, 45, 30, 0.25); }
.v4-btn-ink:hover { background: var(--v3-blue2); box-shadow: 0 10px 24px rgba(78, 107, 90, 0.30); transform: translateY(-2px); }

/* 装裱画框 */
.v4-hero-visual { position: relative; }
.v4-hero-frame {
  position: relative;
  padding: 12px;
  background: rgba(252, 248, 239, 0.95);
  border: 1px solid var(--v3-gold);
  box-shadow: 0 30px 70px rgba(20, 12, 4, 0.5);
  transform: rotate(1.5deg);
  transition: transform 0.5s;
}
.v4-hero-frame:hover { transform: rotate(0deg); }
.v4-hero-frame img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  filter: sepia(0.12) saturate(1.02);
}
.v4-hero-frame::before,
.v4-hero-frame::after {
  content: '';
  position: absolute;
  width: 26px; height: 26px;
  border: 2px solid var(--v3-gold);
}
.v4-hero-frame::before { top: -7px; left: -7px; border-right: none; border-bottom: none; }
.v4-hero-frame::after { bottom: -7px; right: -7px; border-left: none; border-top: none; }
.v4-hero-seal {
  position: absolute;
  left: -26px;
  bottom: -24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 22px;
  background: rgba(62, 45, 30, 0.92);
  border: 1px solid rgba(231, 203, 146, 0.75);
  border-radius: 4px;
  box-shadow: 0 14px 34px rgba(20, 12, 4, 0.45);
  transform: rotate(-2deg);
}
.v4-hero-seal-year { font-family: var(--v3-serif-en); font-size: 13px; letter-spacing: 3px; color: var(--v3-gold); font-weight: 700; }
.v4-hero-seal-place { font-size: 12.5px; letter-spacing: 2px; color: rgba(240, 228, 206, 0.85); }

/* ---------- 通用章节（自然高度，非全屏） ---------- */
.v4-section { min-height: auto; display: block; padding: 96px 0; }
.v4-section-alt { background: var(--v3-bg2); }
.v4-section-inner { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.v4-section-head { text-align: center; margin-bottom: 52px; }
.v4-section-head .v3-chapter-index { padding-left: 0; }
.v4-section-head .v3-chapter-index::before { display: none; }
.v4-section-head .v3-chapter-title::after { left: 50%; transform: translateX(-50%); }
.v4-section-lead { color: var(--v3-text-3); font-size: 15.5px; line-height: 1.9; margin-top: 6px; }
.v4-center-btn { text-align: center; margin-top: 44px; }

/* ---------- 壹 · 学院概况 ---------- */
.v4-about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.v4-about-text p { font-size: 15.5px; line-height: 2.05; color: var(--v3-text-2); margin-bottom: 18px; }
.v4-about-text strong { color: var(--v3-navy); font-weight: 700; }
.v4-motto { display: flex; align-items: center; gap: 16px; margin: 30px 0 34px; }
.v4-motto-line { flex: 1; height: 1px; background: linear-gradient(90deg, transparent, rgba(176, 145, 90, 0.6)); }
.v4-motto-line:last-child { background: linear-gradient(90deg, rgba(176, 145, 90, 0.6), transparent); }
.v4-motto-text { font-family: var(--v3-kai); font-size: 18px; color: var(--v3-navy); letter-spacing: 3px; white-space: nowrap; font-weight: 700; }
.v4-about-side { display: flex; flex-direction: column; gap: 22px; }
.v4-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.v4-stat-card {
  padding: 28px 24px;
  text-align: center;
  background: var(--v3-glass-bg);
  border: 1px solid var(--v3-glass-border);
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(92, 68, 51, 0.08);
  transition: all 0.3s;
}
.v4-stat-card:hover { transform: translateY(-4px); border-color: rgba(176, 145, 90, 0.55); box-shadow: 0 14px 34px rgba(92, 68, 51, 0.15); }
.v4-stat-num { font-family: var(--v3-serif-en); font-size: 40px; font-weight: 700; color: var(--v3-navy); line-height: 1.1; }
.v4-stat-num i { font-family: var(--v3-kai); font-style: normal; font-size: 16px; color: var(--v3-cyan2); margin-left: 4px; font-weight: 700; }
.v4-stat-label { font-size: 13.5px; color: var(--v3-text-3); margin-top: 8px; letter-spacing: 2px; }
.v4-about-figure { padding: 8px; background: var(--v3-card); border: 1px solid var(--v3-glass-border); border-radius: 4px; box-shadow: 0 10px 28px rgba(92, 68, 51, 0.12); }
.v4-about-figure img { width: 100%; height: 190px; object-fit: cover; border-radius: 2px; filter: sepia(0.1); }

/* ---------- 贰 · 科研方向（三列图文卡） ---------- */
.v4-research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  counter-reset: v4rc;
}
.v4-research-card {
  display: flex;
  flex-direction: column;
  background: var(--v3-glass-bg);
  border: 1px solid var(--v3-glass-border);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(92, 68, 51, 0.08);
  transition: all 0.35s;
  counter-increment: v4rc;
}
.v4-research-card:hover { transform: translateY(-6px); border-color: rgba(176, 145, 90, 0.6); box-shadow: 0 18px 44px rgba(92, 68, 51, 0.18); }
.v4-research-cover { position: relative; height: 210px; overflow: hidden; }
.v4-research-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.v4-research-card:hover .v4-research-cover img { transform: scale(1.06); }
.v4-research-cover-ph {
  position: absolute;
  inset: 0;
  display: block;
  background: linear-gradient(135deg, #6B4F3A, #8A6D4B);
}
.v4-research-card:nth-child(2) .v4-research-cover-ph { background: linear-gradient(135deg, #4E6B5A, #6E8C79); }
.v4-research-card:nth-child(3) .v4-research-cover-ph { background: linear-gradient(135deg, #8A6D3F, #B0915A); }
.v4-research-cover-ph::after {
  content: 'AI';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--v3-serif-en);
  font-size: 72px;
  font-weight: 700;
  letter-spacing: 4px;
  color: rgba(252, 248, 239, 0.28);
}
.v4-research-cover::before {
  content: counter(v4rc, decimal-leading-zero);
  position: absolute;
  top: 12px;
  right: 14px;
  z-index: 2;
  font-family: var(--v3-serif-en);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 2px;
  color: rgba(252, 248, 239, 0.85);
}
.v4-research-tag {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 2;
  font-size: 12px;
  letter-spacing: 1.5px;
  padding: 4px 12px;
  border-radius: 3px;
  background: rgba(252, 248, 239, 0.94);
  color: var(--v3-seal);
  border: 1px solid rgba(156, 74, 56, 0.4);
  font-weight: 600;
}
.v4-research-body { padding: 22px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.v4-research-title { font-size: 17.5px; line-height: 1.6; color: var(--v3-navy); margin-bottom: 10px; letter-spacing: 0.5px; }
.v4-research-meta { font-size: 13px; color: var(--v3-text-3); margin-bottom: 16px; }
.v4-card-arrow { margin-top: auto; font-size: 13.5px; color: var(--v3-blue2); font-weight: 600; letter-spacing: 1px; }
.v4-research-card:hover .v4-card-arrow { color: var(--v3-seal); }

/* ---------- 叁 · 师资名片名录 ---------- */
.v4-faculty-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.v4-faculty-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 22px;
  background: var(--v3-glass-bg);
  border: 1px solid var(--v3-glass-border);
  border-radius: 6px;
  box-shadow: 0 6px 20px rgba(92, 68, 51, 0.08);
  transition: all 0.3s;
}
.v4-faculty-card:hover { transform: translateY(-4px); border-color: rgba(176, 145, 90, 0.6); box-shadow: 0 14px 32px rgba(92, 68, 51, 0.16); }
.v4-faculty-avatar { flex: 0 0 auto; width: 64px; height: 64px; }
.v4-faculty-avatar img,
.v4-faculty-avatar-ph {
  width: 64px; height: 64px;
  border-radius: 50%;
  object-fit: cover;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(176, 145, 90, 0.55);
  box-shadow: 0 4px 12px rgba(92, 68, 51, 0.16);
}
.v4-faculty-avatar-ph {
  background: linear-gradient(135deg, var(--v3-purple1), var(--v3-purple2));
  color: var(--v3-navy);
  font-size: 24px;
  font-weight: 700;
  font-family: var(--v3-serif);
}
.v4-faculty-info { min-width: 0; }
.v4-faculty-name { font-size: 18px; color: var(--v3-navy); letter-spacing: 1px; display: inline-block; margin-right: 8px; }
.v4-title-seal {
  display: inline-block;
  font-size: 11.5px;
  color: var(--v3-seal);
  border: 1px solid rgba(156, 74, 56, 0.55);
  padding: 1px 8px;
  border-radius: 3px;
  letter-spacing: 1px;
  vertical-align: 2px;
}
.v4-faculty-research { font-size: 13px; color: var(--v3-text-3); margin-top: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---------- 肆 · 横向培养路径 ---------- */
.v4-path {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.v4-path::before {
  content: '';
  position: absolute;
  top: 31px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(176, 145, 90, 0.55) 12%, rgba(156, 74, 56, 0.35) 88%, transparent);
}
.v4-path-item { display: flex; flex-direction: column; align-items: center; position: relative; }
.v4-path-dot {
  z-index: 2;
  width: 62px; height: 62px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #A85440, var(--v3-seal));
  color: #F6EBDD;
  font-family: var(--v3-kai);
  font-size: 24px;
  font-weight: 700;
  border: 3px solid var(--v3-card);
  box-shadow: 0 6px 18px rgba(156, 74, 56, 0.35), 0 0 0 2px rgba(156, 74, 56, 0.35);
  margin-bottom: 22px;
}
.v4-path-card {
  width: 100%;
  padding: 24px 22px;
  background: var(--v3-glass-bg);
  border: 1px solid var(--v3-glass-border);
  border-top: 3px solid var(--v3-violet);
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(92, 68, 51, 0.08);
  flex: 1;
}
.v4-path-stage {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--v3-cyan2);
  font-weight: 700;
  font-family: var(--v3-serif);
  margin-bottom: 8px;
}
.v4-path-card h3 { font-size: 18px; color: var(--v3-navy); margin-bottom: 10px; letter-spacing: 1px; }
.v4-path-card p { font-size: 13.5px; line-height: 1.9; color: var(--v3-text-3); }

/* ---------- 伍 · 报刊式新闻 ---------- */
.v4-news-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 32px;
  align-items: stretch;
}
.v4-news-feature-card {
  display: flex;
  flex-direction: column;
  background: var(--v3-glass-bg);
  border: 1px solid var(--v3-glass-border);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 10px 28px rgba(92, 68, 51, 0.10);
  transition: all 0.35s;
}
.v4-news-feature-card:hover { transform: translateY(-5px); border-color: rgba(176, 145, 90, 0.6); box-shadow: 0 18px 44px rgba(92, 68, 51, 0.18); }
.v4-news-feature-cover { position: relative; height: 280px; overflow: hidden; }
.v4-news-feature-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s; }
.v4-news-feature-card:hover .v4-news-feature-cover img { transform: scale(1.05); }
.v4-news-cover-ph {
  position: absolute;
  inset: 0;
  display: block;
  background:
    radial-gradient(circle at 78% 20%, rgba(201, 167, 107, 0.35), transparent 55%),
    linear-gradient(135deg, #5C4433, #4E6B5A);
}
.v4-news-cover-ph::after {
  content: '新论';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--v3-serif);
  font-size: 64px;
  font-weight: 700;
  letter-spacing: 12px;
  color: rgba(252, 248, 239, 0.30);
}
.v4-seal-tag {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 2;
  font-size: 12px;
  letter-spacing: 2px;
  padding: 4px 12px;
  border-radius: 3px;
  background: rgba(252, 248, 239, 0.94);
  color: var(--v3-seal);
  border: 1px solid rgba(156, 74, 56, 0.4);
  font-weight: 600;
}
.v4-news-feature-body { padding: 24px 26px 26px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.v4-news-feature-title { font-size: 22px; line-height: 1.6; color: var(--v3-navy); letter-spacing: 0.5px; }
.v4-news-feature-date { font-size: 13px; color: var(--v3-text-3); margin-top: auto; font-family: var(--v3-serif); letter-spacing: 1px; }

.v4-news-lines { display: flex; flex-direction: column; }
.v3-chapter .v4-news-line { opacity: 0; transform: translateY(20px); transition: opacity 0.7s ease, transform 0.7s ease; }
.v3-chapter.is-in .v4-news-line { opacity: 1; transform: translateY(0); }
.v3-chapter.is-in .v4-news-line:nth-child(1) { transition-delay: 0.05s; }
.v3-chapter.is-in .v4-news-line:nth-child(2) { transition-delay: 0.15s; }
.v3-chapter.is-in .v4-news-line:nth-child(3) { transition-delay: 0.25s; }
.v3-chapter.is-in .v4-news-line:nth-child(4) { transition-delay: 0.35s; }
.v3-chapter.is-in .v4-news-line:nth-child(5) { transition-delay: 0.45s; }
.v4-news-line {
  display: flex;
  gap: 18px;
  padding: 18px 10px;
  border-bottom: 1px solid rgba(92, 68, 51, 0.14);
  align-items: flex-start;
  transition: background 0.25s;
}
.v4-news-line:hover { background: rgba(176, 145, 90, 0.10); }
.v4-news-line-date { flex: 0 0 64px; text-align: center; padding-right: 16px; border-right: 1px solid rgba(176, 145, 90, 0.45); }
.v4-news-line-date b { display: block; font-family: var(--v3-serif-en); font-size: 30px; font-weight: 700; color: var(--v3-navy); line-height: 1.1; }
.v4-news-line-date span { font-size: 12px; color: var(--v3-text-3); font-family: var(--v3-serif-en); }
.v4-news-line-body { min-width: 0; }
.v4-news-line-cat { font-size: 11.5px; letter-spacing: 2px; color: var(--v3-seal); font-weight: 600; }
.v4-news-line-title { font-size: 16px; line-height: 1.65; color: var(--v3-text); margin-top: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; font-family: var(--v3-serif); font-weight: 700; }
.v4-news-line:hover .v4-news-line-title { color: var(--v3-seal); }
.v4-news-line-more { border-bottom: none; align-items: center; justify-content: center; }
.v4-news-line-more .v4-news-line-title { font-size: 15px; color: var(--v3-blue2); text-align: center; }
.v4-news-line-more:hover .v4-news-line-title { color: var(--v3-seal); }

/* ---------- 合作章节微调 ---------- */
.v4-join-inner { text-align: center; }
.v4-join-inner .v3-logo-wrap { margin: 44px 0; }
.v4-join-inner .v3-join-cards { margin-top: 40px; }

/* ---------- V4 首页响应式 ---------- */
@media (max-width: 1024px) {
  .v4-hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .v4-hero-frame { transform: none; max-width: 520px; margin: 0 auto; }
  .v4-hero-seal { left: auto; right: 0; }
  .v4-about-grid { grid-template-columns: 1fr; gap: 40px; }
  .v4-research-grid { grid-template-columns: repeat(2, 1fr); }
  .v4-faculty-grid { grid-template-columns: repeat(2, 1fr); }
  .v4-path { grid-template-columns: repeat(2, 1fr); }
  .v4-path::before { display: none; }
  .v4-news-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .v4-section { padding: 64px 0; }
  .v4-section-inner { padding: 0 20px; }
  .v4-hero-inner { padding: 40px 20px 70px; }
  .v4-hero-title { letter-spacing: 5px; }
  .v4-hero-frame img { height: 300px; }
  .v4-research-grid, .v4-faculty-grid { grid-template-columns: 1fr; }
  .v4-stats { gap: 14px; }
  .v4-stat-num { font-size: 32px; }
  /* 培养路径转纵向 */
  .v4-path { grid-template-columns: 1fr; gap: 26px; }
  .v4-path-item { flex-direction: row; align-items: flex-start; gap: 16px; }
  .v4-path-dot { width: 48px; height: 48px; font-size: 18px; margin-bottom: 0; flex: 0 0 auto; }
  .v4-path-card { border-top: none; border-left: 3px solid var(--v3-violet); }
  .v4-news-feature-cover { height: 220px; }
  .v4-news-line { gap: 14px; }
  .v4-news-line-date { flex-basis: 52px; padding-right: 12px; }
}