@font-face {
  font-family: "Yueyuan Headline";
  src: url("assets/hero-type.woff2") format("woff2");
  font-weight: 800;
  font-display: swap;
  unicode-range: U+00B7, U+5171, U+547D, U+7136, U+751F, U+81EA;
}
:root {
  color-scheme: light;
  --paper: #faf8ee;
  --paper-bright: #fffdf7;
  --ink: #203d30;
  --muted: #526156;
  --pine: #173c2e;
  --line: #d9ddcd;
  --gold: #efc86b;
  --wrap: 1216px;
}
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font: 16px/1.75 "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button { color: inherit; font: inherit; }
a:focus-visible, button:focus-visible, video:focus-visible {
  outline: 3px solid #9b5819;
  outline-offset: 5px;
}
.mast a:focus-visible, .mast button:focus-visible, .hero a:focus-visible, .hero button:focus-visible { outline-color: #fff1ad; }
svg, img, video { display: block; }
img, video { max-width: 100%; }
h1, h2, h3, p, figure { margin: 0; }
.wrap { width: min(var(--wrap), calc(100% - 100px)); margin-inline: auto; }
.section { scroll-margin-top: 22px; }
.skip-link {
  position: fixed;
  z-index: 10;
  inset: 10px auto auto 10px;
  transform: translateY(-160%);
  border-radius: 6px;
  padding: 9px 16px;
  color: var(--ink);
  background: var(--paper-bright);
}
.skip-link:focus { transform: none; }
.mast {
  position: absolute;
  z-index: 3;
  inset: 0 0 auto;
  color: var(--paper-bright);
  border-bottom: 1px solid #f5f4df40;
}
.mast-inner { min-height: 94px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 13px; min-width: 0; text-decoration: none; }
.brand-emblem {
  display: grid;
  flex: 0 0 auto;
  width: 57px;
  height: 57px;
  place-items: center;
  border: 1px solid #e7dec797;
  border-radius: 50%;
  background: #fffdf2;
}
.brand-emblem img { width: 42px; height: 42px; object-fit: contain; }
.brand-name { max-width: 460px; font-weight: 710; font-size: clamp(1rem, 1.55vw, 1.22rem); letter-spacing: .03em; line-height: 1.42; }
.mast-nav { display: flex; align-items: center; gap: clamp(15px, 2.65vw, 37px); }
.mast-nav a { display: block; padding: 9px 0; font-size: .92rem; white-space: nowrap; text-decoration: none; font-weight: 600; }
.mast-nav a:hover { text-decoration: underline; text-underline-offset: 6px; }
.mast-nav a:last-child { color: #fff1bc; }
.mast-nav a span { padding-left: 2px; }
.menu-toggle { display: none; }
.hero {
  position: relative;
  display: grid;
  isolation: isolate;
  min-height: max(655px, 92vh);
  min-height: max(655px, 92svh);
  overflow: hidden;
  background: #193d2e;
  color: #fffdf3;
}
.hero-still, .hero-video { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
.hero-still img, .hero-video { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-still { z-index: 1; opacity: 1; transition: opacity .4s cubic-bezier(.4,0,.2,1); }
.hero.has-hero-video .hero-still { opacity: 0; }
.hero::after {
  position: absolute;
  z-index: 2;
  inset: 0;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(180deg, #13271ded 0%, #13271d53 19%, transparent 36%, transparent 72%, #142b207d 100%),
    linear-gradient(92deg, #11291ed9 0%, #11291e98 38%, #172d2259 65%, #102c211a 100%);
}
.hero-inner { position: relative; z-index: 3; display: grid; align-items: center; min-height: inherit; padding-block: 122px 62px; }
.hero-inner::after {
  position: absolute;
  inset-inline: 0;
  bottom: clamp(37px, 7svh, 68px);
  border-top: 1px solid #f0eed454;
  pointer-events: none;
  content: "";
}
.hero-play { position: absolute; right: 0; bottom: clamp(88px, 13svh, 145px); z-index: 4; display: flex; align-items: center; gap: 13px; padding: 12px 19px 12px 13px; border: 1px solid #f2e6bc77; border-radius: 60px; background: #143424ae; color: #fff7df; backdrop-filter: blur(8px); text-align: left; cursor: pointer; }
.hero-play-icon { display: grid; width: 39px; height: 39px; border: 1px solid #f4e5b2a6; border-radius: 50%; place-items: center; }
.hero-play-icon svg { width: 20px; height: 20px; fill: currentColor; }
.hero-play strong { display: block; font-size: .88rem; font-weight: 650; letter-spacing: .05em; }
.hero-play small { display: block; color: #d2ddc7; font-size: .65rem; margin-top: 2px; letter-spacing: .12em; }
.hero-play:hover { background: #214b35e8; }
@media (max-width: 680px) { .hero-play { bottom: 83px; padding: 9px 15px 9px 9px; gap: 9px; } .hero-play-icon { width: 34px; height: 34px; } .hero-play strong { font-size: .8rem; } }
.hero-copy { padding: 46px 0; }
.hero-eyebrow { display: flex; align-items: center; gap: 13px; margin-bottom: 19px; color: #fff2ca; font-size: .89rem; font-weight: 650; letter-spacing: .28em; }
.hero-eyebrow span { width: 34px; height: 1px; background: #eed49c; }
.hero h1 {
  font: 800 clamp(3.55rem, 8vw, 7.15rem)/1.13 "Yueyuan Headline", "Noto Serif SC", "Songti SC", SimSun, serif;
  letter-spacing: .034em;
  text-shadow: 0 4px 26px #15281988;
  white-space: nowrap;
}
.hero h1 span { padding: 0 .07em; color: #f5d785; }
.hero-subtitle { margin-top: 17px; color: #fff9e9; font-size: clamp(1rem, 2vw, 1.34rem); font-weight: 500; letter-spacing: .16em; }
.hero-action {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-height: 48px;
  margin-top: 34px;
  border: 1px solid #fffae1a5;
  border-radius: 4px;
  padding: 9px 19px;
  color: #fffdf3;
  background: #173a2b60;
  font-weight: 650;
  text-decoration: none;
  transition: color .18s ease, background-color .18s ease;
}
.hero-action:hover { color: var(--pine); background: #fff7dd; }
.campus { padding: clamp(66px, 8.9vw, 129px) 0 clamp(58px, 7vw, 96px); }
.section-heading { display: grid; align-items: end; }
.campus-heading { grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); gap: 60px; }
.section-index {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 13px;
  color: #54705a;
  font-size: .79rem;
  font-weight: 750;
  letter-spacing: .12em;
}
.section-index span { border-bottom: 1px solid currentColor; font: 600 .81rem/1.4 Georgia, serif; letter-spacing: .035em; }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); line-height: 1.23; letter-spacing: -.055em; font-weight: 780; text-wrap: balance; }
.campus-heading > p, .course-copy > p:not(.section-index), .showcase-heading div > p:last-child, .brochure-copy > p:not(.section-index) {
  color: var(--muted);
  font-size: 1.01rem;
  line-height: 1.9;
}
.campus-heading > p { max-width: 525px; padding-bottom: 3px; }
.course { padding: clamp(52px, 7vw, 92px) 0; background: #eaf0df; }
.course-layout { display: grid; grid-template-columns: minmax(0, .74fr) minmax(0, 1.26fr); align-items: center; gap: clamp(30px, 6.5vw, 95px); }
.course-copy h2 { margin-bottom: 15px; }
.course-film { padding: 9px 9px 0; border: 1px solid #bdc9b0; border-radius: 14px; background: #f9fbf4; }
.course-film video { width: 100%; aspect-ratio: 16 / 9; border-radius: 8px; background: #19392d; object-fit: contain; }
.course-film figcaption { padding: 8px 8px 9px; color: #4d6250; font-size: .78rem; letter-spacing: .055em; }
.showcase { padding: clamp(59px, 8vw, 102px) 0 clamp(55px, 6.8vw, 83px); }
.showcase-heading { grid-template-columns: minmax(0, 1fr) auto; gap: 10px; margin-bottom: 20px; }
.showcase-heading div > p:last-child { margin-top: 10px; }
.showcase-mascot { width: 116px; height: 116px; object-fit: contain; mix-blend-mode: multiply; }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 17px; }
.result-card {
  display: flex;
  flex-direction: column;
  min-height: 227px;
  min-width: 0;
  padding: 22px 23px 18px;
  border: 1px solid #dbe1d0;
  border-top: 3px solid #73956c;
  border-radius: 7px;
  background: var(--paper-bright);
}
.demo-card { border-top-color: #bd9138; }
.sel-card { border-top-color: #be8268; }
.card-label { display: flex; justify-content: space-between; align-items: center; color: #546f59; font-size: .76rem; font-weight: 720; letter-spacing: .10em; }
.card-label span { color: #68846d; font: 600 .95rem/1 Georgia, serif; }
.result-card h3 { margin: 12px 0 7px; font-size: clamp(1.13rem, 1.7vw, 1.37rem); line-height: 1.4; }
.result-card p { margin-bottom: 14px; color: var(--muted); font-size: .9rem; }
.card-link { align-self: flex-start; margin-top: auto; padding-block: 5px; color: #245739; font-size: .9rem; font-weight: 750; text-underline-offset: 4px; }
.card-link span { display: inline-block; margin-left: 4px; }
.card-link:hover { text-decoration-thickness: 2px; }
.brochure { padding: 0 0 clamp(53px, 7.2vw, 104px); }
.brochure-panel {
  display: grid;
  grid-template-columns: 1fr .94fr;
  min-height: 345px;
  align-items: center;
  gap: 18px;
  padding: clamp(28px, 4.7vw, 63px);
  overflow: hidden;
  border-radius: 18px;
  background: linear-gradient(110deg, #ebefd9, #f6f0d9);
}
.brochure-copy h2 { font-size: clamp(1.8rem, 3.4vw, 2.87rem); }
.brochure-copy > p:not(.section-index) { margin-top: 12px; }
.book-link { display: inline-flex; align-items: center; gap: 13px; margin-top: 21px; border-radius: 4px; padding: 10px 14px; color: #fffdf3; background: #315f43; font-size: .9rem; font-weight: 690; text-decoration: none; }
.book-link:hover { background: #214b34; }
.brochure-art {
  --cover-width: 29%;
  --cover-center: 50%;
  --cover-top: 4%;
  position: relative;
  display: block;
  width: min(100%, 500px);
  aspect-ratio: 960 / 492;
  justify-self: center;
  isolation: isolate;
  border-radius: 8px;
}
.book-cover {
  position: absolute;
  z-index: 1;
  top: var(--cover-top);
  left: var(--cover-center);
  width: var(--cover-width);
  height: auto;
  transform: translateX(-50%);
  border-radius: 3px;
  box-shadow: 0 10px 22px #37482d36;
}
.book-mascots {
  position: absolute;
  z-index: 2;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.footer { color: #edf2de; background: #173b2d; }
.footer-top { display: grid; grid-template-columns: 1.25fr .65fr 1fr; gap: clamp(24px, 5vw, 72px); padding-block: 47px 35px; }
.footer-brand { display: flex; align-items: center; gap: 13px; text-decoration: none; font-size: .82rem; line-height: 1.6; }
.footer-brand img { flex: 0 0 auto; padding: 7px; border-radius: 50%; background: #fffdf0; object-fit: contain; }
.footer-brand strong { display: block; color: #fffdf0; font-size: 1.36rem; letter-spacing: .08em; }
.footer-identity > p { margin-top: 17px; color: #e4d59d; font-size: .87rem; letter-spacing: .13em; }
.footer-identity > p.footer-motto { margin-top: 5px; color: #bdceba; font-size: .78rem; letter-spacing: .02em; }
.footer-nav { display: grid; align-content: start; gap: 6px; }
.footer-nav h3, .footer-contact h3 { margin: 0 0 8px; color: #fff9dc; font-size: .9rem; font-weight: 700; }
.footer-nav a { justify-self: start; color: #cad8c5; font-size: .82rem; text-decoration: none; padding: 2px 0; }
.footer-nav a:hover { text-decoration: underline; text-underline-offset: 4px; }
.footer-contact { color: #cad8c5; font-size: .82rem; font-style: normal; line-height: 1.85; }
.footer-contact > a { display: inline-block; margin-top: 8px; color: #fff4cd; text-underline-offset: 4px; font-size: 1rem; font-variant-numeric: tabular-nums; }
.footer-bottom { display: grid; justify-items: center; gap: 5px; padding-block: 16px 20px; border-top: 1px solid #bed0ac33; color: #bacbb6; text-align: center; }
.footer-bottom p { font-size: .73rem; line-height: 1.65; }
.filing { padding: 4px 6px; color: #f0efd9; font-size: .8rem; text-underline-offset: 3px; }
@media (max-width: 680px) {
  .footer-top { grid-template-columns: .8fr 1.2fr; gap: 27px 24px; padding-block: 30px 26px; }
  .footer-identity { grid-column: 1 / -1; }
  .footer-brand strong { font-size: 1.24rem; }
  .footer-contact { font-size: .78rem; }
}
@media (max-width: 1040px) {
  .wrap { width: calc(100% - 68px); }
  .campus-heading { gap: 38px; }
  .mast-nav { gap: 20px; }
  .mast-nav a { font-size: .85rem; }
  .mast-inner { gap: 18px; }
}
@media (max-width: 830px) {
  .wrap { width: calc(100% - 44px); }
  .mast-inner { min-height: 78px; }
  .brand-name { font-size: .95rem; }
  .brand-emblem { width: 46px; height: 46px; }
  .brand-emblem img { width: 34px; height: 34px; }
  .mast-nav { gap: 15px; }
  .hero h1 { font-size: clamp(2.75rem, 8.8vw, 5.65rem); }
  .cards { gap: 12px; }
  .result-card { padding-inline: 15px; }
}
@media (max-width: 680px) {
  .wrap { width: calc(100% - 36px); }
  .mast-inner { min-height: 72px; }
  .brand-name { font-size: .85rem; line-height: 1.4; }
  .brand { gap: 8px; max-width: 290px; }
  .brand-emblem { width: 43px; height: 43px; }
  .brand-emblem img { width: 31px; height: 31px; }
  .mast-nav {
    position: absolute;
    top: 100%;
    inset-inline: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2px 14px;
    padding: 11px 18px;
    border-bottom: 1px solid #e5edd444;
    background: #183b2ff5;
  }
  .mast.is-enhanced .mast-nav { display: none; }
  .mast.is-enhanced .menu-toggle {
    display: inline-flex;
    align-items: center;
    flex-direction: column;
    justify-content: center;
    gap: 1px;
    width: 46px;
    min-height: 46px;
    flex: 0 0 auto;
    border: 0;
    border-radius: 5px;
    padding: 2px;
    background: #162e2455;
    font-size: .64rem;
    cursor: pointer;
  }
  .mast.is-enhanced .menu-toggle[aria-expanded="true"] + .mast-nav { display: grid; }
  .hero { min-height: max(560px, 86vh); min-height: max(560px, 86svh); }
  .hero-inner { padding-block: 91px 40px; }
  .hero-copy { padding-block: 22px; }
  .hero h1 { font-size: clamp(1.94rem, 9.15vw, 3.93rem); }
  .hero-subtitle { margin-top: 12px; font-size: .9rem; letter-spacing: .095em; }
  .hero-eyebrow { margin-bottom: 12px; font-size: .75rem; }
  .hero-action { margin-top: 26px; min-height: 43px; padding: 7px 14px; font-size: .88rem; }
  .campus-heading, .course-layout { grid-template-columns: 1fr; gap: 17px; }
  .campus-heading > p, .course-copy > p:not(.section-index), .showcase-heading div > p:last-child, .brochure-copy > p:not(.section-index) { font-size: .94rem; line-height: 1.8; }
  .course-layout { gap: 22px; }
  .showcase-heading { align-items: center; }
  .showcase-mascot { width: 78px; height: 78px; }
  .result-card { padding: 16px 17px 14px; min-height: auto; }
  .result-card h3 { margin-top: 9px; }
  .result-card p { margin-bottom: 8px; }
  .brochure-panel { grid-template-columns: 1fr; gap: 14px; padding: 24px 21px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0s !important; }
}

.age-curriculum {
  --age-ink: #234634;
  --age-muted: #506454;
  --age-line: #cbd7c2;
  --age-accent: #56764d;
  margin-top: clamp(28px, 4.8vw, 62px);
  color: var(--age-ink);
}
.age-curriculum [hidden] { display: none !important; }
.age-curriculum .age-heading { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px; align-items: center; margin-bottom: 20px; }
.age-curriculum .age-eyebrow { margin: 0 0 6px; color: #55704f; font-size: .76rem; font-weight: 740; letter-spacing: .12em; }
.age-curriculum .age-heading h3 { margin: 0 0 7px; font-size: clamp(1.36rem, 2.5vw, 2.02rem); line-height: 1.3; }
.age-curriculum .age-heading p:last-child { margin: 0; color: var(--age-muted); font-size: .91rem; }
.age-curriculum .age-mascot { width: clamp(50px, 7.5vw, 88px); height: auto; mix-blend-mode: multiply; }
.age-curriculum .age-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-bottom: 13px; }
.age-curriculum .age-tab {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-content: center;
  min-height: 76px;
  gap: 3px 8px;
  width: 100%;
  padding: 11px 15px;
  border: 1px solid #c4d2b8;
  border-radius: 11px;
  background: #f8faef;
  color: var(--age-ink);
  text-align: start;
  cursor: pointer;
}
.age-curriculum .age-tab:hover { background: #f0f5e6; border-color: #87a17a; }
.age-curriculum .age-tab[aria-selected="true"] { background: #294c37; border-color: #294c37; color: #fffcec; }
.age-curriculum .age-tab > span { grid-column: 1; font-size: 1.08rem; font-weight: 780; line-height: 1.3; }
.age-curriculum .age-tab > strong { grid-column: 1; font-size: .8rem; font-weight: 540; line-height: 1.4; }
.age-curriculum .age-tab > small { grid-column: 2; grid-row: 1 / span 2; align-self: center; opacity: .68; font: 500 1.18rem/1 Georgia, serif; }
.age-curriculum .age-tab:focus-visible, .age-curriculum .age-panel:focus-visible, .age-curriculum summary:focus-visible { outline: 2px solid #875a29; outline-offset: 3px; }
.age-curriculum .age-panels { display: grid; gap: 13px; }
.age-curriculum .age-panel { --age-accent: #56764d; min-width: 0; padding: clamp(15px, 3vw, 32px); border: 1px solid var(--age-line); border-radius: 13px; background: #fffdf5; }
.age-curriculum #age-panel-middle { --age-accent: #46786b; }
.age-curriculum #age-panel-large { --age-accent: #8b693f; }
.age-curriculum .age-panel-header { display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; padding-bottom: 19px; }
.age-curriculum .age-category { margin: 0 0 6px; color: var(--age-accent); font-size: .78rem; font-weight: 730; letter-spacing: .055em; }
.age-curriculum .age-panel h4 { margin: 0 0 8px; font-size: clamp(1.24rem, 2.2vw, 1.72rem); line-height: 1.35; }
.age-curriculum .age-description { max-width: 49rem; margin: 0; color: var(--age-muted); font-size: .91rem; line-height: 1.78; }
.age-curriculum .age-core { display: grid; align-content: center; gap: 4px; margin: 0; padding: 10px 13px; border-inline-start: 2px solid var(--age-accent); background: #eef3e7; }
.age-curriculum .age-core > span { color: var(--age-accent); font-size: .73rem; }
.age-curriculum .age-core > strong { font-size: .86rem; line-height: 1.65; font-weight: 650; }
.age-curriculum .age-map { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; margin-bottom: 20px; }
.age-curriculum .age-map-block { min-width: 0; }
.age-curriculum .age-map h5 { margin: 0 0 8px; color: #48634d; font-size: .79rem; font-weight: 760; }
.age-curriculum .age-places, .age-curriculum .age-projects { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.age-curriculum .age-places li { padding: 3px 8px; border: 1px solid #d3ddc8; border-radius: 4px; background: #f6f8ed; color: #38583f; font-size: .8rem; line-height: 1.65; }
.age-curriculum .age-projects li { padding-block: 3px; color: var(--age-muted); font-size: .79rem; line-height: 1.65; }
.age-curriculum .age-example { border: 1px solid #d5dfcd; border-radius: 9px; background: #f7f9ef; }
.age-curriculum .age-example summary { display: flex; align-items: center; justify-content: space-between; min-height: 49px; gap: 8px; padding: 10px 13px; list-style: none; cursor: pointer; }
.age-curriculum .age-example summary::-webkit-details-marker { display: none; }
.age-curriculum .age-example summary > span:first-child { color: #2e513a; font-size: .9rem; font-weight: 750; }
.age-curriculum .age-example summary small { display: inline-block; margin-inline-end: 6px; color: var(--age-accent); font-size: .72rem; font-weight: 550; }
.age-curriculum .age-expand { display: grid; flex: 0 0 auto; width: 24px; height: 24px; place-items: center; border-radius: 50%; color: var(--age-accent); background: #e6eddb; font-size: 1rem; }
.age-curriculum .age-example[open] .age-expand { transform: rotate(45deg); }
.age-curriculum .age-example-body { padding: 0 13px 13px; }
.age-curriculum .age-example-body h5 { margin: 0 0 3px; font-size: 1rem; line-height: 1.6; }
.age-curriculum .age-sample-note { margin: 0 0 10px; color: #61705c; font-size: .72rem; }
.age-curriculum .age-steps { display: grid; grid-template-columns: minmax(0, 1fr); gap: 11px 20px; margin: 0; padding: 0; list-style: none; }
.age-curriculum .age-steps li { min-width: 0; border-top: 1px solid #dbe3d2; padding-top: 7px; }
.age-curriculum .age-steps li > span { color: var(--age-accent); font-size: .73rem; }
.age-curriculum .age-steps li strong { margin-inline-start: 4px; font-weight: 750; }
.age-curriculum .age-steps li p { margin: 3px 0 0; color: #3d5546; font-size: .83rem; line-height: 1.7; }
.age-curriculum .age-shared { display: grid; grid-template-columns: minmax(0, 1fr); gap: 18px; margin-top: 15px; padding: clamp(15px, 2.8vw, 26px); border: 1px solid #c6d3bc; border-radius: 12px; background: #e4ecd7; }
.age-curriculum .age-shared h4 { margin: 0 0 6px; font-size: 1.05rem; line-height: 1.5; }
.age-curriculum .age-shared p { margin: 0; color: #50634f; font-size: .85rem; line-height: 1.7; }
.age-curriculum .age-shared dl { display: grid; gap: 11px; margin: 0; }
.age-curriculum .age-shared dl div { display: grid; gap: 3px; }
.age-curriculum .age-shared dt { color: #4b6948; font-size: .73rem; font-weight: 750; }
.age-curriculum .age-shared dd { margin: 0; font-size: .82rem; line-height: 1.75; }
.age-curriculum .age-shared dd span { display: inline-block; }
@media (min-width: 760px) {
  .age-curriculum .age-panel-header { grid-template-columns: minmax(0, 1.7fr) minmax(0, .8fr); gap: 26px; }
  .age-curriculum .age-map { grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr); gap: 26px; }
  .age-curriculum .age-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .age-curriculum .age-shared { grid-template-columns: minmax(0, .94fr) minmax(0, 1.06fr); gap: 32px; }
}
@media (max-width: 390px) {
  .age-curriculum .age-tabs { gap: 6px; }
  .age-curriculum .age-tab { padding: 10px 9px; }
  .age-curriculum .age-tab > small { display: none; }
  .age-curriculum .age-tab { grid-template-columns: minmax(0, 1fr); }
  .age-curriculum .age-tab > span { font-size: .97rem; }
  .age-curriculum .age-tab > strong { font-size: .73rem; }
}

@media (max-width: 820px) {
  .mast-nav { position: absolute; top: 100%; inset-inline: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px 14px; padding: 11px 18px; border-bottom: 1px solid #e5edd444; background: #183b2ff5; }
  .mast.is-enhanced .mast-nav { display: none; }
  .mast.is-enhanced .menu-toggle { display: inline-flex; align-items: center; flex-direction: column; justify-content: center; gap: 1px; width: 46px; min-height: 46px; flex: 0 0 auto; padding: 5px; border: 0; color: inherit; background: transparent; font-size: .66rem; }
  .mast.is-enhanced .menu-toggle[aria-expanded="true"] + .mast-nav { display: grid; }
}



.dayanshan-section { background: #f6f4e9; padding-block: clamp(44px, 6vw, 76px); }
.sr-status { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.nature-experience { margin-top: clamp(34px, 5vw, 64px); }
.nature-heading { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 24px; }
.nature-heading > div > p { color: #788265; font-size: .74rem; letter-spacing: .22em; }
.nature-heading h3 { margin: 8px 0 0; font: 600 clamp(1.8rem, 3.9vw, 3.4rem)/1.25 "Songti SC", SimSun, serif; letter-spacing: -.04em; }
.nature-heading > p { color: #65735f; font-size: .85rem; line-height: 1.9; }
.nature-gallery { background: #102f24; color: #fff9e8; overflow: hidden; border-radius: 5px; }
.nature-stage { position: relative; isolation: isolate; display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); overflow: hidden; --gaze-x: 62%; --gaze-y: 36%; --pan-x: 0px; --pan-y: 0px; }
.nature-photo-area { position: relative; min-width: 0; aspect-ratio: 3 / 2; overflow: hidden; isolation: isolate; background: #193b2d; }
.nature-images, .nature-static, .nature-shade, .nature-light, .nature-atmosphere { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.nature-images { z-index: -3; transform: translate3d(var(--pan-x), var(--pan-y), 0) scale(1.045); will-change: transform; }
.nature-images img, .nature-static { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; object-position: center; }
.nature-images img { opacity: 0; transform: scale(1.045); transition: opacity .8s cubic-bezier(.4,0,.2,1), transform 1.6s cubic-bezier(.4,0,.2,1); filter: saturate(.86); }
.nature-images img.is-selected { opacity: 1; transform: scale(1); }
.nature-static { z-index: -3; }
.nature-shade { z-index: -2; background: linear-gradient(180deg, #09251c22, transparent 25%); }
.nature-light { z-index: -1; background: radial-gradient(ellipse 42% 68% at var(--gaze-x) var(--gaze-y), #f5df9c2b, transparent 75%); mix-blend-mode: screen; }
.nature-atmosphere { z-index: 0; opacity: .8; }
.nature-topline { position: absolute; top: 22px; inset-inline: 24px; display: flex; color: #fffbed; font-size: .67rem; letter-spacing: .12em; }
.nature-topline > span { padding: 6px 10px; background: #163b2dbb; border-radius: 3px; }
.nature-hint { opacity: .75; font-size: .64rem; letter-spacing: .08em; }
.nature-mobile-hint { display: none; }
.nature-story { position: relative; display: flex; flex-direction: column; justify-content: center; padding: clamp(25px, 3vw, 43px); min-width: 0; }
.nature-chapter { color: #e3ce97; font: 500 .74rem/1.6 Georgia, "Songti SC", serif; letter-spacing: .14em; }
.nature-story h4 { margin: 15px 0 17px; color: #fffced; font: 500 clamp(1.75rem, 2.7vw, 2.55rem)/1.35 "Songti SC", SimSun, serif; letter-spacing: -.015em; }
.nature-description { max-width: 405px; color: #d4deca; font-size: .84rem; line-height: 1.85; }
.nature-practices { display: flex; flex-wrap: wrap; gap: 7px 15px; margin: 21px 0 0; padding: 16px 0 0; border-top: 1px solid #b8cbb12e; list-style: none; color: #e3d3a9; font-size: .72rem; }
.nature-practices li::before { content: '·'; margin-right: 6px; }
.nature-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); padding-inline: 27px; border-top: 1px solid #c1d0b930; }
.nature-tabs button { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 6px 14px; min-height: 100px; margin-top: -1px; padding: 19px 24px; border: 0; border-top: 2px solid transparent; color: #b5c6ad; background: transparent; text-align: left; cursor: pointer; transition: color .4s cubic-bezier(.4,0,.2,1), border-color .4s cubic-bezier(.4,0,.2,1); }
.nature-tabs button { -webkit-tap-highlight-color: transparent; }
.nature-tabs button + button { border-left: 1px solid #c1d0b91f; }
.nature-tabs button > span { grid-row: span 2; font: .8rem Georgia, serif; color: #8da68a; }
.nature-tabs button strong { font-size: 1.05rem; font-weight: 600; letter-spacing: .1em; }
.nature-tabs button small { grid-column: 2; font-size: .7rem; letter-spacing: .06em; }
.nature-tabs button svg { grid-column: 3; grid-row: 1 / span 2; width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.2; transition: transform .4s cubic-bezier(.4,0,.2,1); }
.nature-tabs button[aria-selected="true"] { border-top-color: #d9c58e; color: #fff4cf; }
.nature-tabs button:hover { color: #fff4cf; }
.nature-tabs button:hover svg { transform: translateX(4px); }
.nature-tabs button:focus-visible, .nature-story:focus-visible { outline: 2px solid #edda9c; outline-offset: -5px; }
.nature-signature { display: flex; align-items: center; gap: 13px; padding-top: 17px; color: #69795f; font-size: .7rem; }
.nature-signature > p:last-child { margin-left: auto; color: #8a927b; font-size: .65rem; }
.nature-companions { display: flex; align-items: center; flex: 0 0 auto; }
.nature-companions img { width: 33px; height: 33px; object-fit: contain; mix-blend-mode: multiply; }
.nature-companions img + img { margin-left: 2px; }
@media (max-width: 820px) {
  .nature-heading { display: block; margin-bottom: 20px; }
  .nature-heading > p { margin-top: 13px; font-size: .82rem; }
  .nature-heading > p br { display: none; }
  .nature-stage { display: block; }
  .nature-photo-area { aspect-ratio: 3 / 2; }
  .nature-topline { top: 22px; inset-inline: 22px; font-size: .59rem; letter-spacing: .11em; }
  .nature-desktop-hint { display: none; }
  .nature-mobile-hint { display: inline; }
  .nature-hint { font-size: .55rem; }
  .nature-story { padding: 24px 25px 27px; min-height: 248px; }
  .nature-story h4 { font-size: clamp(1.7rem, 6.2vw, 2.6rem); margin-block: 14px; }
  .nature-description { font-size: .78rem; line-height: 1.85; }
  .nature-practices { margin-top: 16px; padding-top: 13px; font-size: .69rem; }
  .nature-tabs { padding-inline: 12px; }
  .nature-tabs button { grid-template-columns: 1fr auto; gap: 7px 4px; padding: 17px 12px 19px; min-height: 86px; }
  .nature-tabs button > span { display: none; }
  .nature-tabs button strong { font-size: .93rem; }
  .nature-tabs button small { grid-column: 1; font-size: .61rem; letter-spacing: 0; }
  .nature-tabs button svg { grid-column: 2; width: 15px; height: 15px; }
  .nature-signature { flex-wrap: wrap; gap: 7px; padding-top: 12px; font-size: .65rem; }
  .nature-signature > p:last-child { flex-basis: 100%; margin-left: 0; font-size: .6rem; }
}
@media (prefers-reduced-motion: reduce) {
  .nature-images { transform: none; }
  .nature-images img { transition: none; transform: none; }
  .nature-atmosphere, .nature-light { display: none; }
}
.dayanshan-section [hidden] { display: none !important; }
.dayanshan-section .dayanshan-heading { max-width: 1000px; margin-bottom: 25px; }
.dayanshan-section .dayanshan-eyebrow { margin: 0 0 11px; color: #5b7656; font-size: .75rem; font-weight: 740; letter-spacing: .08em; }
.dayanshan-section .dayanshan-heading h2 { margin: 0 0 14px; font-size: clamp(1.7rem, 3.8vw, 2.95rem); line-height: 1.3; letter-spacing: -.045em; }
.dayanshan-section .dayanshan-heading > p:last-child { max-width: 890px; margin: 0; color: #506250; font-size: .92rem; line-height: 1.85; }
.dayanshan-section .dayanshan-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 22px; align-items: start; }
.dayanshan-section .dayanshan-landscape { min-width: 0; margin: 0; }
.dayanshan-section .dayanshan-landscape > svg { display: block; width: 100%; height: auto; }
.dayanshan-section .dayanshan-landscape figcaption { display: flex; justify-content: space-between; gap: 10px; margin-top: 6px; color: #6a795e; font-size: .68rem; }
.dayanshan-section .dayanshan-marker-halo { fill: #fff9e4; opacity: 0; transition: opacity 150ms ease; }
.dayanshan-section .dayanshan-marker-dot { fill: #e5ebd6; stroke: #698568; stroke-width: 1.4; transition: fill 150ms ease; }
.dayanshan-section .dayanshan-marker text { fill: #496b4e; font: 600 13px Georgia, serif; text-anchor: middle; }
.dayanshan-section .dayanshan-marker.is-active .dayanshan-marker-halo { opacity: .74; }
.dayanshan-section .dayanshan-marker.is-active .dayanshan-marker-dot { fill: #315a3e; stroke: #315a3e; }
.dayanshan-section .dayanshan-marker.is-active text { fill: #fff7d6; }
.dayanshan-section .dayanshan-cycle { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; margin: 17px 0 0; padding: 0; list-style: none; }
.dayanshan-section .dayanshan-cycle li { color: #5a6b50; font-size: .7rem; line-height: 1.6; }
.dayanshan-section .dayanshan-cycle span { display: block; margin-bottom: 1px; color: #35593e; font-size: .8rem; font-weight: 760; }
.dayanshan-section .dayanshan-explorer { min-width: 0; }
.dayanshan-section .dayanshan-tabs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; margin-bottom: 13px; }
.dayanshan-section .dayanshan-tabs button { display: flex; flex-wrap: wrap; justify-content: center; align-content: center; align-items: center; gap: 2px 6px; min-height: 44px; padding: 7px 5px; border: 1px solid #d0d8c4; border-radius: 7px; background: #fffdf3; color: #35563d; font: inherit; font-size: .8rem; font-weight: 650; line-height: 1.45; cursor: pointer; -webkit-tap-highlight-color: transparent; }
.dayanshan-section .dayanshan-tabs button span { opacity: .7; font: 600 .72rem/1 Georgia, serif; }
.dayanshan-section .dayanshan-tabs button:hover { border-color: #7d9874; }
.dayanshan-section .dayanshan-tabs button[aria-selected="true"] { border-color: #355c40; background: #355c40; color: #fff9df; }
.dayanshan-section .dayanshan-tabs button:focus-visible, .dayanshan-section .dayanshan-panel:focus-visible { outline: 2px solid #88602f; outline-offset: 3px; }
.dayanshan-section .dayanshan-panel { padding: clamp(14px, 2.5vw, 24px); border: 1px solid #d0dac5; border-radius: 11px; background: #fffdf5; }
.dayanshan-section .dayanshan-panel + .dayanshan-panel { margin-top: 12px; }
.dayanshan-section .dayanshan-topic-name { margin: 0 0 5px; color: #6a7b5d; font-size: .73rem; font-weight: 700; }
.dayanshan-section .dayanshan-panel h3 { margin: 0 0 16px; color: #294d35; font-size: clamp(1.06rem, 1.7vw, 1.35rem); line-height: 1.5; }
.dayanshan-section .dayanshan-steps { display: grid; gap: 13px; margin: 0; padding: 0; list-style: none; }
.dayanshan-section .dayanshan-steps li { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 9px; }
.dayanshan-section .dayanshan-steps li > span { padding-top: 3px; color: #829371; font: 500 .75rem/1.6 Georgia, serif; }
.dayanshan-section .dayanshan-steps h4 { margin: 0 0 3px; color: #3d5d40; font-size: .83rem; line-height: 1.5; }
.dayanshan-section .dayanshan-steps p { margin: 0; color: #566651; font-size: .82rem; line-height: 1.7; }
@media (min-width: 800px) {
  .dayanshan-section .dayanshan-layout { grid-template-columns: minmax(0, 1.03fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 50px); }
  .dayanshan-section .dayanshan-landscape { padding-top: 13px; }
}
@media (max-width: 390px) {
  .dayanshan-section .dayanshan-tabs button { font-size: .76rem; }
  .dayanshan-section .dayanshan-tabs button span { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .dayanshan-section .dayanshan-marker-halo, .dayanshan-section .dayanshan-marker-dot { transition: none; }
}