:root {
  color-scheme: light;
  font-family: Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --navy: #0b2f3a;
  --navy-deep: #07242d;
  --teal: #0f7180;
  --teal-pale: #e7f2f1;
  --sand: #f5f0e5;
  --ink: #142e35;
  --muted: #63777b;
  --line: #dce5e4;
  --white: #fff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; color: var(--ink); background: var(--white); }
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; }
button { font: inherit; cursor: pointer; }
.icon { display: inline-flex; width: 17px; height: 17px; flex: 0 0 auto; }
.icon svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.site-header {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between;
  height: 84px; padding: 0 clamp(24px, 5vw, 80px); border-bottom: 1px solid rgba(220,229,228,.85);
  background: rgba(255,255,255,.94); backdrop-filter: blur(16px);
}
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid; width: 44px; height: 44px; place-items: center; background: var(--navy); color: white;
  font-family: Georgia, serif; font-size: 24px;
}
.brand strong, .brand small { display: block; }
.brand strong { color: var(--navy); font-size: 18px; letter-spacing: .12em; }
.brand small { margin-top: 4px; color: var(--muted); font-size: 9px; letter-spacing: .17em; }
.header-actions { display: flex; align-items: center; gap: 14px; margin-left: auto; }
.nav { display: flex; align-items: center; gap: 30px; color: #425b60; font-size: 14px; }
.nav a:hover { color: var(--teal); }
.language-switcher { display: inline-flex; align-items: center; gap: 2px; padding: 3px; border: 1px solid var(--line); }
.language-switcher button {
  min-width: 28px; height: 26px; padding: 0 5px; border: 0; background: transparent; color: var(--muted);
  font-size: 10px; font-weight: 800; letter-spacing: .04em;
}
.language-switcher button:hover, .language-switcher button.active { background: var(--teal-pale); color: var(--navy); }
.nav-mail, .primary-button {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 43px; padding: 0 17px;
  background: var(--navy); color: white !important; font-size: 14px; font-weight: 700; transition: .25s ease;
}
.nav-mail:hover, .primary-button:hover { background: var(--teal); transform: translateY(-1px); }
.menu-button { display: none; border: 0; background: transparent; color: var(--navy); }

.section { padding: clamp(74px, 9vw, 132px) clamp(24px, 7vw, 112px); }
.hero {
  display: grid; grid-template-columns: minmax(0, .9fr) minmax(430px, 1.1fr); align-items: center; gap: clamp(40px, 6vw, 88px);
  min-height: calc(100vh - 84px); padding-top: 70px; padding-bottom: 84px; overflow: hidden;
}
.section-label { margin: 0 0 22px; color: var(--teal); font-size: 12px; font-weight: 800; letter-spacing: .2em; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-family: Georgia, "Noto Serif SC", "Songti SC", serif; color: var(--navy); font-weight: 500; }
h1 { margin-bottom: 26px; font-size: clamp(52px, 5.9vw, 88px); line-height: 1.12; letter-spacing: -.06em; }
h2 { margin-bottom: 24px; font-size: clamp(38px, 4vw, 60px); line-height: 1.18; letter-spacing: -.045em; }
.hero-text, .section-intro > p:last-child, .about-copy > p, .contact > p {
  max-width: 620px; color: var(--muted); font-size: 17px; line-height: 1.9;
}
.button-row { display: flex; align-items: center; gap: 24px; margin-top: 38px; }
.primary-button { min-height: 50px; padding: 0 21px; }
.text-button { color: var(--navy); font-size: 14px; font-weight: 800; border-bottom: 1px solid var(--navy); padding-bottom: 4px; }
.hero-media { position: relative; margin: 0; }
.hero-media::before { content: ""; position: absolute; inset: -20px 20px 20px -20px; border: 1px solid #b9d2d2; z-index: -1; }
.hero-media img { aspect-ratio: 1.06; object-fit: cover; }
.hero-media figcaption { position: absolute; right: -1px; bottom: -1px; padding: 16px 20px; color: white; background: var(--navy); font-size: 10px; letter-spacing: .15em; }

.statement { padding: 28px 7vw; text-align: center; background: var(--navy); color: white; }
.statement p { margin: 0; font-family: Georgia, serif; font-size: clamp(19px, 2vw, 27px); letter-spacing: .03em; }
.statement span { display: block; margin-top: 9px; color: rgba(255,255,255,.64); font-size: 12px; letter-spacing: .12em; }

.learning { display: grid; grid-template-columns: minmax(300px, .85fr) minmax(520px, 1.15fr); gap: 8vw; background: #fbfcfa; }
.resource-list { border-top: 1px solid var(--line); }
.resource { position: relative; padding: 27px 42px 27px 54px; border-bottom: 1px solid var(--line); }
.resource > .icon { position: absolute; left: 0; top: 29px; width: 25px; height: 25px; color: var(--teal); }
.resource-number { position: absolute; top: 30px; right: 0; color: #a9b9b9; font-family: Georgia, serif; font-size: 15px; }
.resource h3 { margin-bottom: 7px; color: var(--navy); font-family: Georgia, "Noto Serif SC", serif; font-size: 25px; font-weight: 500; }
.resource p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }

.about { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(320px, .88fr); gap: 8vw; align-items: center; background: var(--sand); }
.about-media { position: relative; }
.about-media::after { content: ""; position: absolute; right: -16px; bottom: -16px; width: 46%; height: 44%; border-right: 2px solid var(--teal); border-bottom: 2px solid var(--teal); }
.about-media img { aspect-ratio: 1.45; object-fit: cover; }
.about-copy > p { font-size: 15px; line-height: 1.9; }
.arrow-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 12px; }

.values { display: grid; grid-template-columns: repeat(3, 1fr); padding: 0 clamp(24px, 7vw, 112px); background: var(--sand); }
.values div { display: grid; grid-template-columns: auto 1fr; column-gap: 20px; padding: 34px 6px; border-top: 1px solid #d6cfc2; }
.values div + div { padding-left: 30px; border-left: 1px solid #d6cfc2; }
.values strong { grid-row: span 2; color: var(--teal); font-family: Georgia, serif; font-size: 22px; font-weight: 500; }
.values span { color: var(--navy); font-size: 18px; font-weight: 800; }
.values small { margin-top: 7px; color: var(--muted); font-size: 13px; }

.news { display: grid; grid-template-columns: minmax(240px, .66fr) minmax(560px, 1.34fr); gap: 8vw; background: #fbfcfa; }
.news-heading h2 { margin-bottom: 16px; }
.news-heading > p:last-child { color: var(--muted); font-size: 15px; line-height: 1.8; }
.news-list { border-top: 1px solid var(--line); }
.news-list article { display: grid; grid-template-columns: 112px 84px 1fr; column-gap: 18px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.news-list time { color: var(--muted); font-family: Georgia, serif; font-size: 14px; }
.news-list span { color: var(--teal); font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.news-list h3 { margin-bottom: 8px; color: var(--navy); font-family: Georgia, "Noto Serif SC", serif; font-size: 20px; font-weight: 500; }
.news-list p { grid-column: 3; margin-bottom: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }

.contact { color: white; background: var(--navy); text-align: center; }
.contact .section-label { color: #92d1cf; }
.contact h2 { color: white; }
.contact > p { margin-right: auto; margin-left: auto; color: rgba(255,255,255,.7); }
.contact-actions { display: flex; align-items: center; justify-content: center; gap: 26px; margin-top: 34px; }
.primary-button.light { color: var(--navy) !important; background: white; }
.primary-button.light:hover { color: white !important; background: var(--teal); }
.contact-email { color: white; font-size: 14px; border-bottom: 1px solid rgba(255,255,255,.6); padding-bottom: 4px; }

footer { display: flex; align-items: center; gap: 28px; padding: 28px clamp(24px, 5vw, 80px); background: var(--navy-deep); color: rgba(255,255,255,.58); font-size: 11px; }
.footer-brand .brand-mark { width: 35px; height: 35px; background: white; color: var(--navy); font-size: 19px; }
.footer-brand strong { color: white; font-size: 14px; }
.footer-brand small { color: rgba(255,255,255,.56); font-size: 8px; }
footer p { margin: 0; }
footer p:last-child { margin-left: auto; }

@media (max-width: 900px) {
  .site-header { height: 74px; }
  .header-actions { order: 3; }
  .menu-button { display: inline-flex; }
  .nav { position: absolute; top: 74px; right: 0; left: 0; display: none; align-items: stretch; padding: 20px 24px 24px; background: white; border-bottom: 1px solid var(--line); flex-direction: column; gap: 18px; }
  .nav.open { display: flex; }
  .nav-mail { width: max-content; }
  .language-switcher { width: max-content; }
  .hero, .learning, .about, .news { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 64px; }
  .hero-media { max-width: 680px; margin: 18px auto 0; }
  .learning { gap: 42px; }
  .about { gap: 46px; }
}

@media (max-width: 620px) {
  h1 { font-size: 54px; }
  .section { padding: 72px 24px; }
  .hero { padding-top: 56px; }
  .hero-media::before { inset: -10px 10px 10px -10px; }
  .button-row, .contact-actions { align-items: flex-start; flex-direction: column; gap: 20px; }
  .contact-actions { align-items: center; }
  .values { grid-template-columns: 1fr; padding: 0 24px; }
  .values div + div { padding-left: 6px; border-left: 0; }
  .news-list article { grid-template-columns: 1fr; row-gap: 8px; }
  .news-list p { grid-column: auto; }
  footer { align-items: flex-start; flex-direction: column; gap: 16px; }
  footer p:last-child { margin-left: 0; }
}