/* ============================================
   芯位人工智能学院 官方网站样式表
   Stanford-inspired Design / 斯坦福风格
   ============================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Source+Sans+3:ital,wght@0,300;0,400;0,600;0,700;0,900;1,400&family=Source+Serif+4:opsz,wght@8..60,400;8..60,600;8..60,700&display=swap');

/* ---------- CSS Variables ---------- */
:root {
  --cardinal: #8c1515;
  --cardinal-dark: #820000;
  --cardinal-bright: #b1040e;
  --black: #2e2d29;
  --black-true: #1a1a1a;
  --choco: #2f2424;
  --stone: #544948;
  --stone-light: #766963;
  --fog: #f4f4f4;
  --fog-dark: #dad8d2;
  --white: #ffffff;
  --cool-gray: #53565a;
  --text-primary: #2e2d29;
  --text-secondary: #544948;
  --text-light: #766963;
  --link-color: #006cb8;
  --link-hover: #00548f;
  --accent-blue: #0098db;
  --accent-teal: #009b76;
  --brand-primary: #8c1515;
  --brand-secondary: #2e2d29;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --transition: all 0.3s ease;
  --max-width: 1100px;
  --font-sans: 'Source Sans 3', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  --font-serif: 'Source Serif 4', 'Noto Serif SC', Georgia, 'Times New Roman', serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { text-decoration: none; color: var(--link-color); transition: var(--transition); }
a:hover { color: var(--link-hover); }

ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 30px;
}

/* ---------- Identity / Brand Bar ---------- */
.brand-bar {
  background: transparent;
  padding: 5px 0;
  font-size: 14px;
  letter-spacing: 0.3px;
}

.brand-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-bar-left {
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand-bar-left .brand-name {
  color: var(--white);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.5px;
}

.brand-bar-right {
  display: flex;
  gap: 16px;
}

.brand-bar-right a {
  color: rgba(255,255,255,0.85);
  font-size: 13px;
}

.brand-bar-right a:hover {
  color: var(--white);
}

/* ---------- Unified Sticky Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background 0.4s ease, box-shadow 0.4s ease;
}

.site-header.transparent {
  background: transparent;
}

.site-header.solid {
  background: var(--white);
  box-shadow: var(--shadow-md);
}

.site-header.solid .header {
  border-bottom: 1px solid var(--fog-dark);
}

/* Brand bar hides when solid */
.site-header.solid .brand-bar {
  background: var(--cardinal);
}

/* Header row */
.header {
  background: transparent;
  border-bottom: none;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  padding-bottom: 10px;
}

.logo {
  display: flex;
  align-items: center;
  color: var(--text-primary);
}

.logo img {
  height: 100px;
  width: auto;
  display: block;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Theme Toggle Button */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 20px;
  padding: 5px 14px;
  cursor: pointer;
  font-size: 13px;
  font-family: var(--font-sans);
  color: rgba(255,255,255,0.9);
  transition: var(--transition);
  white-space: nowrap;
}

.site-header.solid .theme-toggle {
  background: var(--fog);
  border-color: var(--fog-dark);
  color: var(--text-secondary);
}

.theme-toggle:hover {
  background: var(--cardinal);
  color: var(--white);
  border-color: var(--cardinal);
}

.theme-toggle .toggle-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--white);
  transition: var(--transition);
  flex-shrink: 0;
}

.site-header.solid .theme-toggle .toggle-dot {
  background: var(--cardinal);
}

.theme-toggle:hover .toggle-dot {
  background: var(--white);
}

.header-search {
  display: flex;
  align-items: center;
}

.header-search input {
  border: 1px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.1);
  border-radius: 4px 0 0 4px;
  padding: 8px 14px;
  font-size: 14px;
  font-family: var(--font-sans);
  width: 160px;
  outline: none;
  transition: var(--transition);
  color: var(--white);
}

.header-search input::placeholder {
  color: rgba(255,255,255,0.6);
}

.site-header.solid .header-search input {
  border-color: var(--fog-dark);
  background: var(--white);
  color: var(--text-primary);
}

.site-header.solid .header-search input::placeholder {
  color: var(--text-light);
}

.header-search input:focus {
  border-color: var(--cardinal);
}

.header-search button {
  background: var(--cardinal);
  color: var(--white);
  border: 1px solid var(--cardinal);
  border-radius: 0 4px 4px 0;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 14px;
  font-family: var(--font-sans);
  transition: var(--transition);
}

.header-search button:hover {
  background: var(--cardinal-dark);
}

/* ---------- Navigation ---------- */
.main-nav {
  background: rgba(0,0,0,0.35);
  backdrop-filter: blur(4px);
}

.site-header.solid .main-nav {
  background: var(--black);
  backdrop-filter: none;
}

.main-nav ul {
  display: flex;
  justify-content: flex-start;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 30px;
}

.main-nav > ul > li {
  position: relative;
}

.main-nav > ul > li > a {
  display: block;
  padding: 13px 22px;
  color: rgba(255,255,255,0.88);
  font-size: 16px;
  font-weight: 400;
  transition: var(--transition);
}

.main-nav > ul > li:hover > a,
.main-nav > ul > li.active > a {
  color: var(--white);
  background: rgba(255,255,255,0.08);
}

/* Dropdown */
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--white);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: var(--transition);
  z-index: 100;
  border-top: 3px solid var(--cardinal);
}

.main-nav > ul > li:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown li a {
  display: block;
  padding: 10px 20px;
  font-size: 14px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--fog);
}

.dropdown li a:hover {
  background: var(--fog);
  color: var(--cardinal);
}

.menu-toggle {
  display: none;
  background: var(--cardinal);
  color: var(--white);
  border: none;
  padding: 10px 16px;
  font-size: 20px;
  cursor: pointer;
  position: absolute;
  right: 20px;
  top: 10px;
}

/* ---------- Hero / Splash ---------- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  background: var(--choco);
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1.2s ease;
  background-size: cover;
  background-position: center;
}

.hero-slide.active {
  opacity: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(46, 45, 41, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-content {
  text-align: center;
  color: var(--white);
  max-width: 800px;
  padding: 0 30px;
}

.hero-content .hero-wordmark {
  font-family: var(--font-serif);
  font-size: 72px;
  font-weight: 700;
  letter-spacing: 6px;
  margin-bottom: 20px;
  text-shadow: 0 2px 30px rgba(0,0,0,0.4);
  line-height: 1.1;
}

.hero-content .hero-tagline {
  font-size: 22px;
  font-weight: 300;
  opacity: 0.95;
  line-height: 1.6;
  margin-bottom: 30px;
  letter-spacing: 0.5px;
}

.hero-content .hero-cta {
  display: inline-block;
  background: var(--cardinal);
  color: var(--white);
  padding: 14px 36px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: var(--transition);
  border: 2px solid transparent;
}

.hero-content .hero-cta:hover {
  background: var(--cardinal-dark);
  color: var(--white);
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--white);
  font-size: 14px;
  opacity: 0.7;
  text-align: center;
  cursor: pointer;
}

.hero-scroll span {
  display: block;
  font-size: 24px;
  margin-top: 6px;
  animation: bounceDown 2s infinite;
}

@keyframes bounceDown {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

.hero-dots {
  position: absolute;
  bottom: 40px;
  right: 40px;
  display: flex;
  gap: 8px;
  z-index: 10;
}

.hero-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: var(--transition);
}

.hero-dots span.active {
  background: var(--white);
}

/* ---------- Panel / Section System ---------- */
.panel {
  padding: 90px 0;
}

.panel--white {
  background: var(--white);
}

.panel--fog {
  background: var(--fog);
}

.panel--stone {
  background: var(--stone);
  color: var(--white);
}

.panel--choco {
  background: var(--choco);
  color: var(--white);
}

.panel--cardinal {
  background: var(--cardinal);
  color: var(--white);
}

.panel--image {
  background-size: cover;
  background-position: center;
  position: relative;
  color: var(--white);
}

.panel--image::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(46, 45, 41, 0.75);
}

.panel--image > .container {
  position: relative;
  z-index: 1;
}

.panel-header {
  margin-bottom: 50px;
}

.panel-header h2 {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 14px;
  color: inherit;
}

.panel--white .panel-header h2,
.panel--fog .panel-header h2 {
  color: var(--text-primary);
}

.panel-header p {
  font-size: 20px;
  font-weight: 300;
  line-height: 1.6;
  max-width: 700px;
  opacity: 0.85;
}

.panel--white .panel-header p,
.panel--fog .panel-header p {
  color: var(--text-secondary);
}

.panel-header .highlight-link {
  display: inline-block;
  margin-top: 20px;
  font-size: 18px;
  font-weight: 600;
  color: var(--cardinal);
  border-bottom: 2px solid var(--cardinal);
  padding-bottom: 2px;
}

.panel-header .highlight-link:hover {
  color: var(--cardinal-dark);
  border-color: var(--cardinal-dark);
}

.panel--stone .panel-header .highlight-link,
.panel--choco .panel-header .highlight-link,
.panel--cardinal .panel-header .highlight-link,
.panel--image .panel-header .highlight-link {
  color: var(--white);
  border-color: rgba(255,255,255,0.6);
}

/* ---------- Grid Layout ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* ---------- Cards ---------- */
.card {
  background: var(--white);
  transition: var(--transition);
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-img {
  height: 220px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.card-img .card-label {
  position: absolute;
  top: 16px;
  left: 0;
  background: var(--cardinal);
  color: var(--white);
  padding: 4px 16px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.card-body {
  padding: 28px;
}

.card-body h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.card-body h3 a {
  color: inherit;
}

.card-body h3 a:hover {
  color: var(--cardinal);
}

.card-body p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.card-body .card-meta {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ---------- Feature Block (Stanford style) ---------- */
.feature-block {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.feature-item {
  padding: 40px 30px;
  border-right: 1px solid rgba(255,255,255,0.15);
  transition: var(--transition);
}

.feature-item:last-child {
  border-right: none;
}

.feature-item h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 12px;
}

.feature-item p {
  font-size: 16px;
  line-height: 1.7;
  opacity: 0.85;
}

.feature-item .item-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 15px;
  font-weight: 600;
  color: inherit;
  border-bottom: 1px solid currentColor;
  opacity: 0.8;
  padding-bottom: 2px;
}

.feature-item .item-link:hover {
  opacity: 1;
}

/* White bg feature items */
.panel--white .feature-item,
.panel--fog .feature-item {
  border-right-color: var(--fog-dark);
}

.panel--white .feature-item h3,
.panel--fog .feature-item h3 {
  color: var(--text-primary);
}

.panel--white .feature-item p,
.panel--fog .feature-item p {
  color: var(--text-secondary);
}

.panel--white .feature-item .item-link,
.panel--fog .feature-item .item-link {
  color: var(--cardinal);
}

/* ---------- Stats Row ---------- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
  padding: 20px 0;
}

.stat-item h3 {
  font-family: var(--font-serif);
  font-size: 52px;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 8px;
}

.panel--white .stat-item h3,
.panel--fog .stat-item h3 {
  color: var(--cardinal);
}

.stat-item p {
  font-size: 15px;
  opacity: 0.85;
  letter-spacing: 0.3px;
}

/* ---------- Profile Quote (Stanford style) ---------- */
.profile-quote {
  display: flex;
  align-items: center;
  gap: 50px;
  padding: 40px 0;
}

.profile-quote-img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
}

.profile-quote-content blockquote {
  font-family: var(--font-serif);
  font-size: 24px;
  font-style: italic;
  line-height: 1.5;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.profile-quote-content blockquote::before {
  content: "\201C";
  font-size: 60px;
  line-height: 0;
  position: relative;
  top: 20px;
  margin-right: 6px;
  color: var(--cardinal);
}

.profile-quote-content .profile-name {
  font-weight: 700;
  font-size: 18px;
  color: var(--text-primary);
}

.profile-quote-content .profile-title {
  font-size: 15px;
  color: var(--text-secondary);
}

/* ---------- News Grid ---------- */
.news-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 30px;
}

.news-main {
  overflow: hidden;
}

.news-main .card-img {
  height: 300px;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.news-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--fog-dark);
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.news-item:first-child {
  padding-top: 0;
}

.news-item:last-child {
  border-bottom: none;
}

.news-item-date {
  min-width: 56px;
  text-align: center;
  background: var(--fog);
  padding: 8px;
}

.news-item-date .day {
  font-size: 24px;
  font-weight: 700;
  color: var(--cardinal);
  line-height: 1;
  font-family: var(--font-serif);
}

.news-item-date .month {
  font-size: 11px;
  color: var(--text-light);
  margin-top: 2px;
}

.news-item-content h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 4px;
}

.news-item-content h4 a {
  color: inherit;
}

.news-item-content h4 a:hover {
  color: var(--cardinal);
}

.news-item-content p {
  font-size: 14px;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item-content .post-category {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--cardinal);
  margin-bottom: 4px;
}

/* ---------- Page Banner (sub-pages) ---------- */
.page-banner {
  background: var(--choco);
  background-size: cover;
  background-position: center;
  padding: 100px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(46, 45, 41, 0.7);
}

.page-banner h2 {
  font-family: var(--font-serif);
  font-size: 46px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 2px;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.page-banner .breadcrumb {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  position: relative;
  z-index: 1;
}

.page-banner .breadcrumb a {
  color: rgba(255,255,255,0.9);
}

.page-banner .breadcrumb a:hover {
  color: var(--white);
}

/* ---------- Content Layout ---------- */
.content-section {
  padding: 60px 0;
}

.content-wrapper {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 50px;
}

.content-sidebar {
  position: sticky;
  top: 80px;
  align-self: start;
}

.content-card {
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--fog-dark);
}

.content-card:last-child {
  border-bottom: none;
}

.content-card h3 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.content-card p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

/* Sidebar nav */
.sidebar-nav {
  background: var(--fog);
  padding: 24px;
}

.sidebar-nav h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-primary);
  padding-bottom: 10px;
  border-bottom: 2px solid var(--cardinal);
}

.sidebar-nav ul li a {
  display: block;
  padding: 8px 0;
  font-size: 15px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--fog-dark);
}

.sidebar-nav ul li a:hover,
.sidebar-nav ul li a.active {
  color: var(--cardinal);
}

/* ---------- Tabs ---------- */
.tabs {
  margin: 24px 0;
}

.tab-nav {
  display: flex;
  border-bottom: 2px solid var(--fog-dark);
  margin-bottom: 24px;
  overflow-x: auto;
}

.tab-btn {
  padding: 12px 24px;
  background: none;
  border: none;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-light);
  cursor: pointer;
  position: relative;
  white-space: nowrap;
  transition: var(--transition);
}

.tab-btn::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  transition: var(--transition);
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--cardinal);
}

.tab-btn.active::after {
  background: var(--cardinal);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* ---------- Tables ---------- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 15px;
}

.data-table thead th {
  background: var(--choco);
  color: var(--white);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 14px;
}

.data-table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--fog-dark);
  color: var(--text-primary);
}

.data-table tbody tr:nth-child(even) {
  background: var(--fog);
}

/* ---------- Tags ---------- */
.tag {
  display: inline-block;
  padding: 4px 14px;
  font-size: 13px;
  font-weight: 600;
  background: var(--fog);
  color: var(--text-secondary);
  margin: 3px 4px 3px 0;
  border: 1px solid var(--fog-dark);
}

.tag--cardinal {
  background: var(--cardinal);
  color: var(--white);
  border-color: var(--cardinal);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 12px 30px;
  font-size: 16px;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  letter-spacing: 0.3px;
}

.btn--cardinal {
  background: var(--cardinal);
  color: var(--white);
  border-color: var(--cardinal);
}

.btn--cardinal:hover {
  background: var(--cardinal-dark);
  border-color: var(--cardinal-dark);
  color: var(--white);
}

.btn--outline {
  background: transparent;
  color: var(--cardinal);
  border-color: var(--cardinal);
}

.btn--outline:hover {
  background: var(--cardinal);
  color: var(--white);
}

.btn--white {
  background: var(--white);
  color: var(--cardinal);
  border-color: var(--white);
}

.btn--white:hover {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}

.cta-btn {
  display: inline-block;
  padding: 10px 24px;
  background: var(--cardinal);
  color: var(--white);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}

.cta-btn:hover {
  background: var(--cardinal-dark);
  color: var(--white);
}

/* ---------- Program Card ---------- */
.program-card {
  background: var(--white);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition);
}

.program-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.program-card-header {
  background: var(--choco);
  background-size: cover;
  background-position: center;
  padding: 32px 28px;
  color: var(--white);
  position: relative;
  min-height: 140px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.program-card-header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(46,45,41,0.3) 0%, rgba(46,45,41,0.8) 100%);
}

.program-card-header .icon,
.program-card-header h3,
.program-card-header p {
  position: relative;
  z-index: 1;
}

.program-card-header .icon {
  font-size: 36px;
  margin-bottom: 10px;
}

.program-card-header h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 4px;
}

.program-card-header p {
  font-size: 14px;
  opacity: 0.8;
}

.program-card-body {
  padding: 28px;
}

.program-card-body h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  margin-top: 16px;
}

.program-card-body h4:first-child {
  margin-top: 0;
}

.program-card-body p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.program-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

/* ---------- Campus Card ---------- */
.campus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.campus-card {
  overflow: hidden;
  transition: var(--transition);
}

.campus-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.campus-card-img {
  height: 200px;
  background-size: cover;
  background-position: center;
}

.campus-card-body {
  padding: 24px;
  background: var(--white);
}

.campus-card .campus-icon {
  font-size: 32px;
  margin-bottom: 10px;
}

.campus-card h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.campus-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---------- Mentor / Faculty ---------- */
.mentor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.mentor-card {
  text-align: center;
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--fog-dark);
  transition: var(--transition);
}

.mentor-card:hover {
  box-shadow: var(--shadow-md);
}

.mentor-avatar {
  font-size: 48px;
  margin-bottom: 14px;
}

.mentor-card h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.mentor-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- Badge Grid ---------- */
.badge-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.badge-item {
  text-align: center;
  padding: 24px 16px;
  background: var(--fog);
  border: 1px solid var(--fog-dark);
}

.badge-icon {
  font-size: 36px;
  margin-bottom: 10px;
}

.badge-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.badge-item p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ---------- Level Cards ---------- */
.level-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.level-card {
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--fog-dark);
  border-top: 4px solid var(--cardinal);
}

.level-card h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--cardinal);
  margin-bottom: 8px;
}

.level-card .level-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-light);
  margin-bottom: 4px;
}

.level-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- Highlight Box ---------- */
.highlight-box {
  background: var(--fog);
  border-left: 4px solid var(--cardinal);
  padding: 24px 28px;
  margin: 24px 0;
}

.highlight-box h4 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.highlight-box p {
  font-size: 15px;
  line-height: 1.8;
  text-indent: 0;
}

/* ---------- Notice ---------- */
.notice {
  background: #fff9e6;
  border-left: 4px solid #f0d860;
  padding: 16px 20px;
  margin: 16px 0;
  font-size: 14px;
  color: #8a6d00;
}

/* ---------- Timeline ---------- */
.timeline {
  position: relative;
  padding: 20px 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--fog-dark);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  width: 45%;
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--fog-dark);
  margin-bottom: 20px;
}

.timeline-item:nth-child(odd) {
  margin-left: 0;
}

.timeline-item:nth-child(even) {
  margin-left: 55%;
}

.timeline-item::before {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  background: var(--cardinal);
  border-radius: 50%;
  top: 28px;
}

.timeline-item:nth-child(odd)::before {
  right: -30px;
}

.timeline-item:nth-child(even)::before {
  left: -30px;
}

.timeline-item h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--cardinal);
  margin-bottom: 6px;
}

.timeline-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- Contact Grid ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.contact-card {
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--fog-dark);
  text-align: center;
}

.contact-card .contact-icon {
  font-size: 36px;
  margin-bottom: 14px;
}

.contact-card h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.contact-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---------- Map Placeholder ---------- */
.map-placeholder {
  width: 100%;
  height: 400px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 40px;
  position: relative;
  overflow: hidden;
}

/* ---------- FAQ ---------- */
.faq-item {
  border-bottom: 1px solid var(--fog-dark);
}

.faq-item h4 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  padding: 16px 0;
}

.faq-item p {
  font-size: 15px;
  color: var(--text-secondary);
  padding-bottom: 16px;
  line-height: 1.7;
}

/* ---------- Quick Links ---------- */
.quick-links {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  border: 1px solid var(--fog-dark);
}

.quick-link {
  text-align: center;
  padding: 28px 16px;
  color: var(--text-primary);
  border-right: 1px solid var(--fog-dark);
  transition: var(--transition);
}

.quick-link:last-child {
  border-right: none;
}

.quick-link:hover {
  background: var(--fog);
  color: var(--cardinal);
}

.quick-link-icon {
  font-size: 28px;
  margin-bottom: 8px;
}

.quick-link span {
  font-size: 14px;
  font-weight: 600;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--choco);
  color: rgba(255,255,255,0.8);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-about h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 14px;
}

.footer-about p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 16px;
  opacity: 0.8;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 14px;
}

.footer-contact-item .fci-icon {
  flex-shrink: 0;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--cardinal);
}

.footer-col ul li a {
  display: block;
  padding: 5px 0;
  font-size: 14px;
  color: rgba(255,255,255,0.7);
}

.footer-col ul li a:hover {
  color: var(--white);
}

.footer-bottom {
  text-align: center;
  padding: 20px 0;
  margin-top: 20px;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

.footer-bottom a {
  color: rgba(255,255,255,0.6);
}

.footer-bottom a:hover {
  color: var(--white);
}

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  background: var(--cardinal);
  color: var(--white);
  border: none;
  font-size: 20px;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--cardinal-dark);
}

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.animate-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Scroll-triggered fly-in from different directions */
.fly-in {
  opacity: 0;
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fly-in.from-left {
  transform: translateX(-100px) rotate(-3deg);
}

.fly-in.from-right {
  transform: translateX(100px) rotate(3deg);
}

.fly-in.from-top {
  transform: translateY(-80px) scale(0.8);
}

.fly-in.from-bottom {
  transform: translateY(80px) scale(0.8);
}

.fly-in.zoom-in {
  transform: scale(0.3);
}

.fly-in.visible {
  opacity: 1;
  transform: translateX(0) translateY(0) rotate(0deg) scale(1);
}

/* Staggered delays for grid items */
.fly-in.delay-1 { transition-delay: 0.1s; }
.fly-in.delay-2 { transition-delay: 0.2s; }
.fly-in.delay-3 { transition-delay: 0.3s; }
.fly-in.delay-4 { transition-delay: 0.4s; }

/* Sub-pages: header isn't transparent */
.page-header .site-header {
  position: relative;
}

body.has-hero .site-header {
  position: fixed;
}

/* Collision entrance for stats */
@keyframes collisionIn {
  0% { opacity: 0; transform: scale(0.3) translateY(60px); }
  60% { opacity: 1; transform: scale(1.08) translateY(-8px); }
  80% { transform: scale(0.95) translateY(3px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}

.stat-item.collision-enter {
  animation: collisionIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  opacity: 0;
}

/* News fade-in cycling */
@keyframes newsFade {
  0% { opacity: 0; transform: translateY(10px); }
  100% { opacity: 1; transform: translateY(0); }
}

.news-fade-in {
  animation: newsFade 0.5s ease forwards;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .grid-3, .feature-block, .mentor-grid, .campus-grid, .level-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4, .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .news-grid {
    grid-template-columns: 1fr;
  }

  .content-wrapper {
    grid-template-columns: 1fr;
  }

  .content-sidebar {
    position: static;
  }

  .program-cards {
    grid-template-columns: 1fr;
  }

  .quick-links {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }

  .badge-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero-content .hero-wordmark {
    font-size: 52px;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 16px;
  }

  .brand-bar {
    display: none;
  }

  .header-search {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .main-nav ul {
    display: none;
    flex-direction: column;
  }

  .main-nav ul.open {
    display: flex;
  }

  .main-nav > ul > li > a {
    padding: 12px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }

  .main-nav .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: rgba(0,0,0,0.15);
    border-top: none;
  }

  .hero {
    height: 70vh;
    min-height: 400px;
  }

  .hero-content .hero-wordmark {
    font-size: 36px;
    letter-spacing: 3px;
  }

  .hero-content .hero-tagline {
    font-size: 17px;
  }

  .panel {
    padding: 60px 0;
  }

  .panel-header h2 {
    font-size: 30px;
  }

  .grid-3, .feature-block, .mentor-grid, .campus-grid, .level-cards, .contact-grid {
    grid-template-columns: 1fr;
  }

  .grid-4, .stats-row {
    grid-template-columns: 1fr 1fr;
  }

  .feature-item {
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    padding: 24px 0;
  }

  .panel--white .feature-item,
  .panel--fog .feature-item {
    border-bottom-color: var(--fog-dark);
  }

  .profile-quote {
    flex-direction: column;
    text-align: center;
    gap: 24px;
  }

  .profile-quote-img {
    width: 140px;
    height: 140px;
  }

  .quick-links {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .page-banner h2 {
    font-size: 32px;
  }

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

  .timeline::before {
    left: 20px;
  }

  .timeline-item,
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    width: calc(100% - 50px);
    margin-left: 40px;
  }

  .timeline-item::before,
  .timeline-item:nth-child(odd)::before,
  .timeline-item:nth-child(even)::before {
    left: -28px;
  }

  .stat-item h3 {
    font-size: 36px;
  }
}

@media (max-width: 480px) {
  .quick-links {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-row {
    grid-template-columns: 1fr;
  }

  .badge-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-content .hero-wordmark {
    font-size: 28px;
  }
}