/* ====== Reset & Base ====== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-text: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-text-tertiary: #86868b;
  --color-bg: #ffffff;
  --color-bg-secondary: #f5f5f7;
  --color-bg-tertiary: #fbfbfd;
  --color-border: #d2d2d7;
  --color-border-light: #e8e8ed;
  --color-accent: #0071e3;
  --color-accent-hover: #0077ed;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  
  --nav-height: 48px;
  --content-max: 980px;
  --content-wide: 1200px;
  
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.47059;
  font-weight: 400;
  color: var(--color-text);
  background: var(--color-bg);
  letter-spacing: -0.022em;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-accent-hover);
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ====== Containers ====== */
.container-narrow {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 22px;
}

.container-wide {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 22px;
}

/* ====== Navigation Bar ====== */
.nav-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 9999;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  transition: all 0.3s var(--ease-out);
}

.nav-bar.scrolled {
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 1024px;
  margin: 0 auto;
  padding: 0 22px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.nav-logo-mark {
  width: 18px;
  height: 18px;
  background: var(--color-text);
  border-radius: 4px;
  position: relative;
}

.nav-logo-mark::after {
  content: '';
  position: absolute;
  top: 4px;
  left: 4px;
  right: 4px;
  bottom: 4px;
  background: white;
  border-radius: 2px;
}

.nav-logo-text {
  font-size: 16px;
  font-weight: 500;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 12px;
  font-weight: 400;
  color: var(--color-text);
  opacity: 0.85;
  transition: opacity 0.2s ease;
  letter-spacing: -0.01em;
}

.nav-links a:hover {
  opacity: 1;
  color: var(--color-text);
}

.nav-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 30px;
  height: 30px;
  padding: 4px;
}

.nav-menu-btn span {
  display: block;
  width: 16px;
  height: 1px;
  background: var(--color-text);
  transition: all 0.3s ease;
}

/* ====== Hero ====== */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 880px;
  overflow: hidden;
}

.hero-image {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.02);
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.15) 0%,
    rgba(0, 0, 0, 0) 30%,
    rgba(0, 0, 0, 0) 60%,
    rgba(0, 0, 0, 0.5) 100%
  );
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  height: 100%;
  display: flex;
  align-items: flex-end;
  padding-bottom: 12vh;
}

.hero-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 22px;
  color: white;
  width: 100%;
}

.hero-eyebrow {
  font-size: 14px;
  font-weight: 500;
  opacity: 0.8;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.hero-title {
  font-size: clamp(48px, 7vw, 80px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero-title-sub {
  display: block;
  background: linear-gradient(135deg, #fff 20%, rgba(255,255,255,0.7));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 400;
  opacity: 0.9;
  max-width: 500px;
  margin-bottom: 40px;
}

.hero-scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
  opacity: 0.7;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: white;
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -50%;
  left: 0;
  width: 100%;
  height: 50%;
  background: rgba(255,255,255,0.4);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0% { top: -50%; }
  100% { top: 100%; }
}

.hero-scroll-indicator span {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ====== Sections ====== */
.section {
  padding: 110px 0;
}

.section-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}

.section-heading {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.07143;
  letter-spacing: -0.005em;
  color: var(--color-text);
  margin-bottom: 24px;
}

.section-heading em {
  font-style: normal;
  font-weight: 700;
  background: linear-gradient(90deg, var(--color-accent), #5e5ce6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-lead {
  font-size: clamp(18px, 2vw, 21px);
  line-height: 1.52381;
  font-weight: 400;
  color: var(--color-text-secondary);
  letter-spacing: 0.01em;
  max-width: 720px;
}

/* ====== About Stats ====== */
.stats-row {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border-light);
  gap: 0;
}

.stat-item {
  padding-right: 40px;
}

.stat-num {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.stat-label {
  font-size: 13px;
  color: var(--color-text-tertiary);
  margin-top: 4px;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--color-border-light);
  margin: 0 40px 0 0;
}

/* ====== Honors Bar ====== */
.honors-bar {
  background: var(--color-bg-secondary);
  padding: 24px 0;
  overflow: hidden;
}

.honors-track {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

.honor-item {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  letter-spacing: 0.01em;
}

.honor-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-text-tertiary);
  opacity: 0.5;
}

/* ====== Philosophy ====== */
.section-philosophy {
  background: var(--color-bg-tertiary);
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 60px;
}

.philo-card {
  background: white;
  border-radius: 18px;
  padding: 32px 28px;
  transition: all 0.4s var(--ease-out);
  border: 1px solid var(--color-border-light);
}

.philo-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.philo-card-accent {
  background: linear-gradient(160deg, #0071e3 0%, #5e5ce6 100%);
  border: none;
  color: white;
}

.philo-card-accent .philo-num,
.philo-card-accent .philo-title,
.philo-card-accent .philo-text {
  color: white;
}

.philo-num {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-tertiary);
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

.philo-title {
  font-size: 19px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.philo-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

/* ====== Features ====== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 60px;
  border-top: 1px solid var(--color-border-light);
  border-left: 1px solid var(--color-border-light);
  border-radius: 18px;
  overflow: hidden;
}

.feature-item {
  padding: 40px 32px;
  border-right: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
  transition: all 0.3s var(--ease-out);
  background: white;
}

.feature-item:hover {
  background: var(--color-bg-secondary);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0, 113, 227, 0.1);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-item h4 {
  font-size: 19px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.feature-item p {
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text-secondary);
}

/* ====== Campus ====== */
.section-campus {
  background: var(--color-bg-secondary);
}

.campus-gallery {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 16px;
  margin-top: 60px;
  border-radius: 24px;
  overflow: hidden;
}

.gallery-item {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  background: var(--color-bg-tertiary);
}

.gallery-item-hero {
  grid-row: span 2;
}

.gallery-image {
  width: 100%;
  height: 100%;
  min-height: 400px;
}

.gallery-item-side .gallery-image {
  min-height: 300px;
}

.gallery-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
}

.gallery-item:hover .gallery-image img {
  transform: scale(1.04);
}

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px;
  color: white;
  background: linear-gradient(transparent, rgba(0,0,0,0.6));
}

.gallery-tag {
  font-size: 12px;
  font-weight: 500;
  opacity: 0.7;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
  display: block;
}

.gallery-name {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.campus-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 40px;
  background: white;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--color-border-light);
}

.campus-feat {
  padding: 32px 24px;
  text-align: center;
  border-right: 1px solid var(--color-border-light);
}

.campus-feat:last-child {
  border-right: none;
}

.campus-feat h5 {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.campus-feat p {
  font-size: 13px;
  color: var(--color-text-tertiary);
}

/* ====== News ====== */
.news-list {
  margin-top: 40px;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border-light);
  transition: all 0.3s var(--ease-out);
  color: var(--color-text);
  cursor: pointer;
}

.news-item:first-child {
  border-top: 1px solid var(--color-border-light);
}

.news-item:hover {
  padding-left: 12px;
  background: var(--color-bg-secondary);
  margin: 0 -12px;
  padding-left: 24px;
  padding-right: 12px;
  border-radius: 12px;
  border-bottom-color: transparent;
  border-top-color: transparent;
}

.news-item:hover + .news-item {
  border-top-color: transparent;
}

.news-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 56px;
  padding-right: 16px;
  border-right: 1px solid var(--color-border-light);
}

.news-day {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
  letter-spacing: -0.01em;
}

.news-month {
  font-size: 12px;
  color: var(--color-text-tertiary);
  margin-top: 4px;
}

.news-content {
  flex: 1;
}

.news-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 6px;
  letter-spacing: 0.03em;
}

.news-title {
  font-size: 19px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.news-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-arrow {
  color: var(--color-text-tertiary);
  opacity: 0;
  transform: translateX(-8px);
  transition: all 0.3s var(--ease-out);
  flex-shrink: 0;
}

.news-item:hover .news-arrow {
  opacity: 1;
  transform: translateX(0);
}

.news-more {
  margin-top: 32px;
  text-align: center;
}

.link-arrow {
  font-size: 15px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.3s ease;
}

.link-arrow::after {
  content: '→';
  transition: transform 0.3s ease;
}

.link-arrow:hover::after {
  transform: translateX(4px);
}

/* ====== Admission ====== */
.section-admission {
  background: var(--color-bg-tertiary);
}

.admission-card {
  margin-top: 48px;
  background: white;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--color-border-light);
}

.admission-row {
  display: flex;
  align-items: flex-start;
  padding: 28px 32px;
  gap: 40px;
}

.admission-row-label {
  flex-shrink: 0;
  width: 100px;
  font-size: 14px;
  color: var(--color-text-tertiary);
  padding-top: 2px;
}

.admission-row-value {
  flex: 1;
  font-size: 17px;
  color: var(--color-text);
  line-height: 1.6;
}

.admission-phone {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: -0.01em;
}

.admission-divider {
  height: 1px;
  background: var(--color-border-light);
  margin: 0 32px;
}

/* ====== Contact ====== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 60px;
}

.contact-card {
  padding: 32px 28px;
  border-radius: 18px;
  background: var(--color-bg-secondary);
  transition: all 0.3s var(--ease-out);
}

.contact-card:hover {
  background: var(--color-bg-tertiary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.contact-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: white;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.contact-card h5 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}

.contact-card p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ====== Footer ====== */
.footer {
  background: var(--color-bg-secondary);
  padding: 50px 0 30px;
  font-size: 12px;
  color: var(--color-text-tertiary);
  border-top: 1px solid var(--color-border-light);
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--color-border-light);
}

.footer-logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.footer-motto {
  font-size: 13px;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col-title {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
  font-size: 12px;
}

.footer-col a {
  color: var(--color-text-secondary);
  font-size: 12px;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  font-size: 11px;
}

/* ====== Reveal Animation ====== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ====== Responsive ====== */
@media (max-width: 1024px) {
  .philosophy-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .campus-feat:nth-child(2) {
    border-right: none;
  }

  .campus-feat:nth-child(1),
  .campus-feat:nth-child(2) {
    border-bottom: 1px solid var(--color-border-light);
  }

  .campus-feat:nth-child(3) {
    border-right: 1px solid var(--color-border-light);
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 48px;
  }

  .section {
    padding: 70px 0;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 22px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    font-size: 17px;
    font-weight: 500;
    padding: 14px 0;
    width: 100%;
    border-bottom: 1px solid var(--color-border-light);
  }

  .nav-menu-btn {
    display: flex;
  }

  .hero {
    height: 90vh;
    min-height: 500px;
    max-height: 700px;
  }

  .hero-title {
    font-size: 42px;
  }

  .stats-row {
    flex-wrap: wrap;
    gap: 24px;
  }

  .stat-item {
    padding-right: 0;
    min-width: 100px;
  }

  .stat-divider {
    display: none;
  }

  .honors-track {
    justify-content: flex-start;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .honor-dot {
    display: none;
  }

  .features-grid {
    grid-template-columns: 1fr;
    border-radius: 12px;
  }

  .feature-item {
    padding: 28px 24px;
  }

  .campus-gallery {
    grid-template-columns: 1fr;
    border-radius: 16px;
  }

  .gallery-item-hero {
    grid-row: span 1;
  }

  .gallery-image {
    min-height: 280px;
  }

  .gallery-item-side .gallery-image {
    min-height: 240px;
  }

  .news-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 24px 0;
  }

  .news-date {
    flex-direction: row;
    gap: 8px;
    border-right: none;
    padding-right: 0;
    align-items: baseline;
  }

  .news-day {
    font-size: 20px;
  }

  .news-month {
    margin-top: 0;
  }

  .news-arrow {
    display: none;
  }

  .admission-row {
    flex-direction: column;
    gap: 8px;
    padding: 24px;
  }

  .admission-row-label {
    width: auto;
    font-size: 13px;
  }

  .admission-divider {
    margin: 0 24px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .section-header.row {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

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

@media (max-width: 480px) {
  .philosophy-grid {
    grid-template-columns: 1fr;
  }

  .campus-features {
    grid-template-columns: 1fr;
  }

  .campus-feat {
    border-right: none;
    border-bottom: 1px solid var(--color-border-light);
  }

  .campus-feat:last-child {
    border-bottom: none;
  }

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