:root {
  color-scheme: light;
  --bg: #ffffff;
  --ink: #111111;
  --muted: #6a6762;
  --line: #ded8cf;
  --soft: #f5f1ea;
  --card: #ffffff;
  --accent: #b9966c;
  --accent-2: #5f6d6a;
  --max: 1120px;
  --radius: 18px;
  --serif-cn: "Source Han Serif SC", "Noto Serif SC", "Songti SC", serif;
  --serif-en: "Cormorant Garamond", "Times New Roman", serif;
  --sans-cn: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --sans-en: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--sans-cn);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

body::before {
  background: transparent;
}

body::after {
  background: transparent;
}

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

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(90%, var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  flex-wrap: nowrap;
}

.brand {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.brand-title {
  font-family: var(--serif-cn);
  font-size: 1.2rem;
  letter-spacing: 0.9px;
}

.brand-sub {
  font-size: 0.9rem;
  color: var(--muted);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 8px;
  background: rgba(247, 244, 239, 0.8);
  font-size: 0.75rem;
  margin-left: auto;
  flex-shrink: 0;
}

.lang-divider {
  width: 1px;
  height: 12px;
  background: var(--line);
}

.lang-toggle {
  border: 0;
  background: none;
  font: inherit;
  color: var(--muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 999px;
}

.lang-toggle.active,
.lang-toggle:hover {
  color: var(--ink);
}

[data-lang-block] {
  display: none;
}

body[data-lang="zh"] [data-lang-block="zh"],
body[data-lang="en"] [data-lang-block="en"] {
  display: block;
}

body[data-lang="zh"] [data-lang-inline="zh"],
body[data-lang="en"] [data-lang-inline="en"] {
  display: inline;
}

[data-lang-inline] {
  display: none;
}

.hero {
  padding: 110px 0 60px;
  min-height: 60vh;
  display: flex;
  align-items: center;
}

.hero-inner {
  display: grid;
  gap: 56px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  align-items: center;
}

.hero-tagline {
  font-size: 1rem;
  color: var(--muted);
  margin: 0 0 22px;
  letter-spacing: 0.12em;
}


.hero h1 {
  font-family: var(--serif-cn);
  font-size: clamp(2.2rem, 4vw, 3.8rem);
  margin: 0 0 20px;
  line-height: 1.12;
}

.hero .lead {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 560px;
}

.hero-aside {
  display: grid;
  gap: 12px;
  justify-items: start;
}

.hero-note {
  font-family: var(--serif-en);
  font-size: 1.05rem;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
}

.section {
  padding: 90px 0;
}

.section-header {
  display: grid;
  gap: 14px;
  margin-bottom: 42px;
}

.section-header h2 {
  font-family: var(--serif-cn);
  font-size: clamp(2rem, 3.2vw, 3rem);
  margin: 0;
}

.section-header p {
  margin: 0;
  color: var(--muted);
}

.programs {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.program {
  padding: 28px 0;
  border-top: 1px solid var(--line);
}

.program:hover {
  color: var(--ink);
}

.program h3 {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.program h3::after {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--accent);
  opacity: 0.7;
}

.program h3 {
  margin: 0 0 10px;
  font-family: var(--serif-cn);
  font-size: 1.2rem;
}

.program p {
  margin: 0;
  color: var(--muted);
}

.detail-block {
  padding: 42px 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 22px;
}

.detail-block + .detail-block {
  margin-top: 18px;
}

.detail-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.detail-head h3 {
  margin: 0;
  font-size: 1.35rem;
  font-family: var(--serif-cn);
}

.detail-head span {
  font-family: var(--serif-en);
  color: var(--muted);
  letter-spacing: 0.09em;
}

.detail-body {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.detail-block.full-rows .detail-body {
  grid-template-columns: 1fr;
}

.detail-column {
  padding-right: 12px;
}

.detail-label {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 12px;
}

.detail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.detail-list li {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.detail-list li:hover {
  color: var(--ink);
}

.detail-row {
  display: grid;
  grid-template-columns: minmax(90px, 120px) 1fr;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.detail-row:last-child,
.detail-list li:last-child {
  border-bottom: 0;
}

.detail-row.no-border {
  border-bottom: 0;
}

.age {
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.principles {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.principle {
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.principle:hover {
  color: var(--ink);
}

.principle h3 {
  font-family: var(--serif-cn);
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.principle p {
  margin: 0;
  color: var(--muted);
}

.contact {
  padding-bottom: 120px;
}

.contact-card {
  margin: 0 auto;
  width: min(340px, 90%);
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card);
  text-align: center;
  box-shadow: 0 16px 40px rgba(17, 17, 17, 0.06);
}

.contact-card img {
  border-radius: 12px;
  border: 1px solid var(--line);
  width: 220px;
  margin: 0 auto;
}

.contact-caption {
  margin-top: 14px;
  font-size: 0.9rem;
  color: var(--muted);
}

.footer {
  border-top: 1px solid var(--line);
  padding: 36px 0 52px;
  color: var(--muted);
  font-size: 0.85rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

[data-reveal] {
  animation: fadeUp 0.8s ease both;
  animation-delay: var(--delay, 0ms);
}

.program,
.detail-list li,
.detail-row,
.principle,
.contact-card,
.lang-toggle {
  transition: color 0.35s ease, border-color 0.35s ease, transform 0.35s ease, box-shadow 0.35s ease;
}

.detail-row:hover,
.program:hover,
.detail-list li:hover,
.principle:hover {
  color: var(--ink);
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 44px rgba(17, 17, 17, 0.1);
}

.lang-toggle:hover {
  color: var(--ink);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    animation: none;
  }
}

@media (max-width: 720px) {
  .header-inner {
    flex-direction: row;
    align-items: center;
    gap: 12px;
    position: relative;
  }

  .brand {
    max-width: 100%;
    padding-right: 96px;
  }

  .lang-switch {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
  }

  .hero {
    padding-top: 70px;
  }

  .hero-aside {
    justify-items: stretch;
  }

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

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}