:root {
  --blue: #5068b7;
  --blue-dark: #263d86;
  --blue-soft: #eef2ff;
  --red: #bb234d;
  --ink: #24262d;
  --muted: #686d7a;
  --line: #e4e7ef;
  --paper: #f7f8fb;
  --white: #fff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

.site-header {
  align-items: center;
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid rgba(228,231,239,.88);
  display: grid;
  grid-template-columns: minmax(210px,1fr) auto minmax(110px,1fr);
  min-height: 86px;
  padding: 12px clamp(22px,5vw,78px);
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(16px);
}
.brand { width: clamp(176px,17vw,226px); }
.brand img,.footer-brand img { mix-blend-mode: multiply; }
.site-nav { display: flex; gap: clamp(22px,3vw,46px); }
.site-nav a { color: #454a56; font-size: 14px; font-weight: 600; position: relative; }
.site-nav a::after {
  background: var(--red); bottom: -9px; content: ""; height: 2px; left: 0; position: absolute;
  transform: scaleX(0); transform-origin: right; transition: transform 180ms ease; width: 100%;
}
.site-nav a:hover::after,.site-nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.header-contact {
  background: var(--blue); border-radius: 999px; color: var(--white); font-size: 14px; font-weight: 700;
  justify-self: end; padding: 12px 22px; transition: background 180ms ease,transform 180ms ease;
}
.header-contact:hover,.header-contact:focus-visible,.button-primary:hover,.button-primary:focus-visible {
  background: var(--blue-dark); transform: translateY(-2px);
}

.hero {
  display: grid; gap: clamp(34px,6vw,90px); grid-template-columns: minmax(0,.8fr) minmax(460px,1.2fr);
  min-height: calc(100vh - 86px); overflow: hidden; padding: clamp(58px,8vw,116px) clamp(22px,6.5vw,108px); position: relative;
}
.hero::before {
  background: var(--blue-soft); border-radius: 50%; content: ""; height: 520px; left: -390px; position: absolute; top: -280px; width: 520px;
}
.hero-copy { align-self: center; position: relative; z-index: 1; }
.kicker {
  align-items: center; color: var(--blue); display: flex; font-size: 12px; font-weight: 800; gap: 12px;
  letter-spacing: .18em; margin: 0 0 22px; text-transform: uppercase;
}
.kicker::before { background: var(--red); border-radius: 50%; content: ""; height: 8px; width: 8px; }
.hero h1 {
  color: #30343d; font-family: "Yu Mincho","Hiragino Mincho ProN","Songti SC",serif;
  font-size: clamp(46px,5.2vw,82px); font-weight: 500; letter-spacing: .025em; line-height: 1.3; margin: 0;
}
.hero-cn { color: var(--blue); font-size: clamp(18px,1.8vw,25px); font-weight: 650; letter-spacing: .14em; margin: 20px 0 0; }
.hero-intro { color: var(--muted); font-size: 16px; line-height: 1.9; margin: 30px 0 0; max-width: 540px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.button {
  border-radius: 999px; display: inline-flex; font-size: 14px; font-weight: 750; justify-content: center;
  min-width: 146px; padding: 15px 24px; transition: background 180ms ease,color 180ms ease,transform 180ms ease;
}
.button-primary { background: var(--blue); color: var(--white); }
.button-secondary { border: 1px solid var(--line); color: #404550; }
.button-secondary:hover,.button-secondary:focus-visible { border-color: var(--blue); color: var(--blue); transform: translateY(-2px); }
.hero-visual {
  align-self: center; background: var(--blue-soft); border-radius: 42% 42% 12% 12% / 34% 34% 10% 10%;
  min-height: 660px; overflow: hidden; position: relative;
}
.hero-visual::after { background: linear-gradient(180deg,transparent 45%,rgba(17,23,43,.66)); content: ""; inset: 0; position: absolute; }
.hero-visual>img { height: 100%; object-fit: cover; position: absolute; width: 100%; }
.hero-stamp { bottom: 38px; color: var(--white); left: 40px; position: absolute; z-index: 2; }
.hero-stamp span { display: block; font-size: 14px; letter-spacing: .36em; }
.hero-stamp strong { display: block; font-family: Georgia,serif; font-size: clamp(42px,4.3vw,68px); font-weight: 400; letter-spacing: .12em; margin-top: 5px; }
.hero-orbit { border: 1px solid rgba(255,255,255,.7); border-radius: 50%; position: absolute; z-index: 2; }
.hero-orbit-one { height: 175px; right: -50px; top: 55px; width: 175px; }
.hero-orbit-two { background: var(--red); border: none; height: 34px; right: 86px; top: 87px; width: 34px; }

.intro-band {
  align-items: start; background: var(--blue); color: var(--white); display: grid; gap: 32px;
  grid-template-columns: .45fr 1.25fr .75fr; padding: 72px clamp(22px,6.5vw,108px);
}
.intro-band>p { font-size: 15px; font-weight: 750; letter-spacing: .18em; margin: 4px 0 0; }
.intro-band h2 { font-family: "Yu Mincho","Songti SC",serif; font-size: clamp(30px,3vw,46px); font-weight: 500; line-height: 1.45; margin: 0; }
.intro-tags { display: flex; flex-direction: column; gap: 12px; }
.intro-tags span { border-bottom: 1px solid rgba(255,255,255,.34); font-size: 14px; padding: 0 0 12px; }

.section { padding: 110px clamp(22px,6.5vw,108px); }
.section-heading { align-items: end; display: flex; justify-content: space-between; margin-bottom: 52px; }
.section-heading h2,.contact-copy h2 {
  font-family: "Yu Mincho","Songti SC",serif; font-size: clamp(38px,4.4vw,64px); font-weight: 500;
  letter-spacing: .03em; line-height: 1.35; margin: 0;
}
.section-heading>p { color: var(--muted); font-size: 14px; line-height: 1.8; margin: 0 0 5px; max-width: 390px; }
.course-grid { display: grid; gap: 22px; grid-template-columns: repeat(4,1fr); }
.course-card { min-width: 0; }
.course-image { aspect-ratio: 4/5; background: var(--paper); border-radius: 22px; overflow: hidden; position: relative; }
.course-image img { height: 100%; object-fit: cover; transition: transform 380ms ease; width: 100%; }
.course-card:hover .course-image img { transform: scale(1.035); }
.course-image span {
  align-items: center; background: var(--white); border-radius: 50%; bottom: 14px; color: var(--blue); display: flex;
  font-size: 12px; font-weight: 800; height: 42px; justify-content: center; position: absolute; right: 14px; width: 42px;
}
.course-card>p { color: var(--muted); font-size: 12px; letter-spacing: .11em; margin: 18px 0 7px; }
.course-card h3 { font-size: 18px; font-weight: 700; margin: 0; }
.content-entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:48px}.content-entry-grid a{border:1px solid var(--line);border-radius:16px;display:flex;justify-content:space-between;padding:20px}.content-entry-grid b{color:var(--blue);font-size:12px}

.activity-section { background: var(--paper); }
.gallery { display: grid; gap: 18px; grid-template-columns: 1.25fr .75fr; grid-template-rows: repeat(2,280px); }
.gallery figure { border-radius: 24px; margin: 0; overflow: hidden; }
.gallery img { height: 100%; object-fit: cover; transition: transform 380ms ease; width: 100%; }
.gallery figure:hover img { transform: scale(1.025); }
.gallery-main { grid-row: 1/3; }

.contact-section {
  background: #283051; color: var(--white); display: grid; gap: clamp(40px,8vw,130px);
  grid-template-columns: minmax(0,1.05fr) minmax(420px,.95fr); padding: 110px clamp(22px,6.5vw,108px);
}
.contact-copy .kicker { color: #c6d0ff; }
.contact-copy h2 { max-width: 760px; }
.contact-copy>p:last-child { color: rgba(255,255,255,.66); line-height: 1.8; margin-top: 28px; }
.contact-card { background: var(--white); border-radius: 26px; color: var(--ink); padding: 18px 36px; }
.contact-card dl { margin: 0; }
.contact-card dl>div { border-bottom: 1px solid var(--line); display: grid; gap: 20px; grid-template-columns: 70px 1fr; padding: 25px 0; }
.contact-card dl>div:last-child { border-bottom: 0; }
.contact-card dt { color: var(--blue); font-size: 13px; font-weight: 800; }
.contact-card dd { font-size: 15px; line-height: 1.8; margin: 0; }
.contact-card dd a { display: block; width: fit-content; }
.contact-card dd a:hover,.contact-card dd a:focus-visible { color: var(--blue); }
.wechat-id { font-family: ui-monospace,SFMono-Regular,Menlo,monospace; font-weight: 700; letter-spacing: .03em; }

footer { align-items: center; display: grid; gap: 30px; grid-template-columns: 1fr auto 1fr; padding: 30px clamp(22px,6.5vw,108px); }
.footer-brand { width: 170px; }
footer p,footer>a:last-child { color: var(--muted); font-size: 12px; }
footer>a:last-child { justify-self: end; }

@media (max-width:1080px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-nav { display: none; }
  .hero { grid-template-columns: 1fr 1fr; padding-left: 42px; padding-right: 42px; }
  .hero-visual { min-height: 590px; }
  .intro-band { grid-template-columns: .4fr 1.2fr; }
  .intro-tags { flex-direction: row; grid-column: 2; }
  .intro-tags span { border: 1px solid rgba(255,255,255,.3); border-radius: 999px; padding: 9px 14px; }
  .course-grid { grid-template-columns: repeat(2,1fr); row-gap: 44px; }
  .contact-section { grid-template-columns: 1fr; }
}

@media (max-width:760px) {
  .site-header { min-height: 70px; padding: 8px 20px; }
  .brand { width: 155px; }
  .header-contact { padding: 10px 16px; }
  .hero { display: flex; flex-direction: column; min-height: auto; padding: 54px 20px 70px; }
  .hero h1 { font-size: clamp(42px,13vw,58px); }
  .hero-intro { font-size: 15px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-visual { border-radius: 180px 180px 26px 26px; min-height: 470px; }
  .hero-stamp { bottom: 26px; left: 24px; }
  .intro-band { display: block; padding: 62px 20px; }
  .intro-band h2 { margin-top: 28px; }
  .intro-tags { flex-wrap: wrap; margin-top: 30px; }
  .section { padding: 80px 20px; }
  .section-heading { align-items: start; flex-direction: column; gap: 20px; margin-bottom: 34px; }
  .course-grid { gap: 34px 14px; }
  .content-entry-grid{grid-template-columns:1fr 1fr}
  .course-image { border-radius: 15px; }
  .course-card h3 { font-size: 15px; }
  .gallery { display: flex; flex-direction: column; }
  .gallery figure { border-radius: 18px; height: 240px; }
  .gallery-main { height: 360px!important; }
  .contact-section { grid-template-columns: minmax(0,1fr); padding: 80px 20px; }
  .contact-card { padding: 12px 22px; }
  .contact-card dl>div { display: block; }
  .contact-card dd { margin-top: 8px; overflow-wrap: anywhere; }
  footer { align-items: start; grid-template-columns: 1fr; padding: 28px 20px; }
  footer>a:last-child { justify-self: start; }
}

@media (prefers-reduced-motion:reduce) {
  html { scroll-behavior: auto; }
  *,*::before,*::after { transition-duration: .01ms!important; }
}