:root {
  --ink: #231d19;
  --paper: #f8f3e9;
  --paper-deep: #efe4d2;
  --red: #7c2d23;
  --red-bright: #a33d2e;
  --gold: #d59a3a;
  --teal: #285d58;
  --blue: #2c536e;
  --mist: #e7efea;
  --line: rgba(35, 29, 25, 0.14);
  --shadow: 0 22px 55px rgba(64, 38, 24, 0.12);
  --radius: 22px;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --font-serif: "Songti SC", "STSong", "SimSun", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.container { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; z-index: 200; top: 10px; left: 10px; padding: 8px 14px;
  background: #fff; border: 2px solid var(--red); transform: translateY(-150%);
}
.skip-link:focus { transform: none; }

.site-header {
  position: sticky; z-index: 100; top: 0;
  background: rgba(248, 243, 233, 0.92);
  border-bottom: 1px solid rgba(35, 29, 25, 0.09);
  backdrop-filter: blur(14px);
}
.nav-shell {
  width: min(1280px, calc(100% - 32px)); min-height: 76px; margin: auto;
  display: flex; align-items: center; justify-content: space-between; gap: 28px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand-mark {
  display: grid; place-items: center; width: 42px; height: 42px; color: #fff;
  background: var(--red); border-radius: 50% 50% 44% 56%; font-family: var(--font-serif);
  font-size: 20px; box-shadow: inset 0 0 0 4px rgba(255,255,255,.12);
}
.brand strong, .brand small { display: block; }
.brand strong { font-family: var(--font-serif); font-size: 20px; letter-spacing: .08em; }
.brand small { margin-top: -3px; color: #74695f; font-size: 11px; letter-spacing: .18em; }
.site-nav { display: flex; align-items: center; justify-content: flex-end; gap: 2px; }
.site-nav a {
  padding: 9px 10px; border-radius: 9px; color: #554b43; font-size: 13px; white-space: nowrap;
}
.site-nav a:hover, .site-nav a:focus-visible { color: var(--red); background: rgba(124,45,35,.08); }
.menu-button { display: none; width: 44px; height: 44px; border: 0; background: transparent; }
.menu-button > span:not(.sr-only) { display: block; width: 23px; height: 2px; margin: 5px auto; background: var(--ink); }

.hero {
  position: relative; overflow: hidden; padding: 88px 0 34px;
  background:
    radial-gradient(circle at 72% 23%, rgba(213,154,58,.2), transparent 24%),
    linear-gradient(135deg, #f8f3e9 0%, #f4eadb 100%);
}
.hero-pattern {
  position: absolute; inset: 0; opacity: .14;
  background-image: linear-gradient(30deg, var(--red) 1px, transparent 1px), linear-gradient(150deg, var(--red) 1px, transparent 1px);
  background-size: 40px 70px; mask-image: linear-gradient(90deg, transparent 55%, #000);
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 60px; }
.eyebrow { margin: 0 0 10px; color: var(--red); font-size: 13px; font-weight: 750; letter-spacing: .24em; text-transform: uppercase; }
.hero h1, .section h2 {
  margin: 0; font-family: var(--font-serif); font-weight: 700; line-height: 1.13;
}
.hero h1 { font-size: clamp(48px, 6.2vw, 88px); letter-spacing: -.04em; }
.hero h1 span { color: var(--red); }
.lead { max-width: 620px; margin: 26px 0 0; color: #655a52; font-size: 19px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px;
  padding: 0 22px; border: 1px solid var(--red); border-radius: 999px; font-weight: 700;
}
.button-primary { color: #fff; background: var(--red); }
.button-primary:hover { background: var(--red-bright); }
.button-ghost:hover { color: #fff; background: var(--red); }
.hero-art {
  position: relative; min-height: 430px; overflow: hidden; border-radius: 52% 48% 44% 56% / 44% 42% 58% 56%;
  background: #d6c2a4; box-shadow: var(--shadow);
}
.sun { position: absolute; width: 130px; height: 130px; top: 52px; right: 65px; border-radius: 50%; background: var(--gold); }
.mountain { position: absolute; left: -5%; bottom: -20%; width: 110%; height: 78%; clip-path: polygon(0 70%, 18% 38%, 30% 52%, 51% 12%, 69% 50%, 81% 33%, 100% 70%, 100% 100%, 0 100%); }
.mountain-back { bottom: 2%; background: #7e9180; opacity: .9; }
.mountain-front { background: var(--teal); clip-path: polygon(0 72%, 15% 51%, 31% 65%, 48% 32%, 63% 61%, 77% 43%, 100% 74%, 100% 100%, 0 100%); }
.motion-ring { position: absolute; border: 4px solid rgba(255,255,255,.62); border-radius: 50%; transform: rotate(-18deg); }
.ring-one { width: 265px; height: 120px; left: 58px; top: 105px; }
.ring-two { width: 205px; height: 88px; left: 105px; top: 145px; }
.hero-seal {
  position: absolute; left: 50%; top: 43%; display: grid; place-items: center;
  width: 72px; height: 86px; color: #fff; background: var(--red); border: 3px solid rgba(255,255,255,.7);
  border-radius: 8px; font-family: var(--font-serif); font-size: 24px; line-height: 1.2; transform: translate(-50%,-50%) rotate(7deg);
}
.notice {
  position: relative; margin: 54px 0 0; padding: 17px 22px; color: #685d54;
  background: rgba(255,255,255,.55); border: 1px solid var(--line); border-radius: 14px; font-size: 14px;
}
.intro-strip { color: #f8f3e9; background: var(--red); }
.feature-row { display: grid; grid-template-columns: repeat(4,1fr); }
.feature-row div { padding: 26px 22px; border-right: 1px solid rgba(255,255,255,.17); }
.feature-row div:last-child { border-right: 0; }
.feature-row strong, .feature-row span { display: block; }
.feature-row strong { font-family: var(--font-serif); font-size: 22px; }
.feature-row span { color: rgba(255,255,255,.72); font-size: 12px; }

.section { padding: 108px 0; }
.section h2 { font-size: clamp(36px, 4.4vw, 58px); letter-spacing: -.03em; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 40px; margin-bottom: 44px; }
.section-heading > p { max-width: 470px; margin: 0 0 7px; color: #6c625b; }
.card-grid { display: grid; gap: 18px; }
.card-grid-four { grid-template-columns: repeat(4,1fr); }
.project-card {
  min-height: 350px; padding: 26px; overflow: hidden; border: 1px solid var(--line);
  border-radius: var(--radius); background: rgba(255,255,255,.48); transition: transform .25s ease, box-shadow .25s ease;
}
.project-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.card-number { color: #786e66; font-size: 12px; letter-spacing: .16em; }
.symbol { position: relative; height: 120px; margin: 18px 0 16px; }
.symbol-ring::before, .symbol-ring::after { content:""; position:absolute; border: 8px solid var(--red); border-radius: 50%; }
.symbol-ring::before { width: 78px; height: 78px; left: 17px; top: 17px; }
.symbol-ring::after { width: 54px; height: 54px; left: 55px; top: 39px; border-color: var(--gold); }
.symbol-arrow::before { content:""; position:absolute; width: 94px; height: 7px; left: 12px; top: 59px; background: var(--gold); transform: rotate(-24deg); }
.symbol-arrow::after { content:""; position:absolute; left: 76px; top: 27px; border: 18px solid transparent; border-left: 33px solid var(--red); transform: rotate(-24deg); }
.symbol-wave { background: repeating-radial-gradient(ellipse at 50% 105%, transparent 0 19px, var(--teal) 20px 24px); }
.symbol-knot::before, .symbol-knot::after { content:""; position:absolute; width: 65px; height: 95px; top: 9px; border: 7px solid var(--blue); border-radius: 50%; }
.symbol-knot::before { left: 22px; transform: rotate(37deg); }
.symbol-knot::after { left: 61px; transform: rotate(-37deg); border-color: var(--red); }
.project-card h3, .heritage-grid h3, .story-card h3, .article-list h3 { margin: 0; font-family: var(--font-serif); font-size: 23px; line-height: 1.35; }
.project-card p { color: #665c54; font-size: 14px; }
.tag { display: inline-block; margin-top: 8px; padding: 5px 10px; border-radius: 999px; background: rgba(35,29,25,.07); font-size: 11px; }

.section-warm { background: var(--paper-deep); }
.split { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 72px; }
.landscape-card { position: relative; height: 500px; overflow: hidden; border-radius: 220px 220px 28px 28px; background: #c9a969; box-shadow: var(--shadow); }
.landscape-card span { position: absolute; z-index: 3; left: 0; right: 0; bottom: 30px; color: rgba(255,255,255,.9); text-align: center; letter-spacing: .45em; }
.landscape-sun { position: absolute; top: 75px; left: 50%; width: 110px; height: 110px; border-radius: 50%; background: #a93c2d; transform: translateX(-50%); }
.ridge { position: absolute; bottom: -2px; width: 120%; height: 68%; left: -10%; }
.ridge-a { background: #788d78; clip-path: polygon(0 65%, 22% 27%, 39% 57%, 55% 16%, 74% 55%, 100% 36%, 100% 100%, 0 100%); }
.ridge-b { background: #3f7065; clip-path: polygon(0 66%, 24% 45%, 44% 70%, 61% 40%, 81% 67%, 100% 48%, 100% 100%, 0 100%); }
.ridge-c { background: #24534f; clip-path: polygon(0 70%, 17% 61%, 35% 76%, 53% 55%, 71% 72%, 86% 58%, 100% 74%, 100% 100%, 0 100%); }
.large-copy { color: #5e554e; font-size: 18px; }
.feature-list { margin: 30px 0 0; padding: 0; list-style: none; }
.feature-list li { display: grid; grid-template-columns: 120px 1fr; gap: 18px; padding: 18px 0; border-top: 1px solid var(--line); color: #625950; }
.feature-list span { color: var(--red); font-weight: 750; }

.section-dark { color: #fff; background: #1f3d39; }
.inverse .eyebrow { color: #efbd6d; }
.inverse > p { color: rgba(255,255,255,.67); }
.heritage-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.heritage-grid article { min-height: 250px; padding: 30px; border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius); background: rgba(255,255,255,.055); }
.heritage-grid article > span { display: inline-grid; place-items: center; width: 54px; height: 54px; margin-bottom: 42px; border: 1px solid #efbd6d; border-radius: 50%; color: #efbd6d; }
.heritage-grid p { color: rgba(255,255,255,.68); font-size: 14px; }
.source-note { margin: 28px 0 0; color: rgba(255,255,255,.56); font-size: 13px; text-align: right; }

.story-grid { display: grid; grid-template-columns: 1fr 1.12fr 1fr; gap: 18px; align-items: start; }
.story-card { overflow: hidden; border-radius: var(--radius); background: #fffaf2; box-shadow: 0 12px 38px rgba(64,38,24,.08); }
.story-card.featured { margin-top: 34px; }
.story-visual { position: relative; height: 235px; overflow: hidden; display: grid; place-items: end start; padding: 20px; color: #fff; }
.story-visual::before, .story-visual::after { content:""; position:absolute; border-radius: 50%; border: 18px solid rgba(255,255,255,.28); }
.story-visual::before { width: 180px; height: 180px; right: -45px; top: -35px; }
.story-visual::after { width: 90px; height: 90px; right: 55px; bottom: -28px; }
.visual-one { background: linear-gradient(145deg,#8c4036,#d28758); }
.visual-two { background: linear-gradient(145deg,#275a55,#77a181); }
.visual-three { background: linear-gradient(145deg,#2b526b,#8c7791); }
.story-visual span { position: relative; z-index: 2; padding: 5px 10px; border: 1px solid rgba(255,255,255,.55); border-radius: 999px; font-size: 11px; }
.story-content { padding: 24px; }
.meta { margin: 0 0 8px; color: var(--red); font-size: 11px; font-weight: 750; letter-spacing: .12em; }
.story-content > p:last-child { margin-bottom: 0; color: #6b6159; font-size: 14px; }

.section-mist { background: var(--mist); }
.video-layout { display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: 70px; }
.small-note { color: #6a746f; font-size: 13px; }
.video-placeholder {
  aspect-ratio: 16/9; display: grid; place-items: center; align-content: center; gap: 8px;
  color: #fff; border-radius: 26px; background:
    radial-gradient(circle at 25% 25%, rgba(213,154,58,.8), transparent 28%),
    linear-gradient(135deg, #234d49, #7c2d23); box-shadow: var(--shadow);
}
.video-placeholder span { color: rgba(255,255,255,.7); font-size: 13px; }
.play-mark { width: 72px; height: 72px; margin-bottom: 10px; border: 1px solid rgba(255,255,255,.66); border-radius: 50%; }
.play-mark::after { content:""; display:block; margin: 24px 0 0 29px; border: 12px solid transparent; border-left: 18px solid #fff; }

.article-list { border-top: 1px solid var(--line); }
.article-list article { display: grid; grid-template-columns: 70px 1fr auto; align-items: center; gap: 22px; padding: 28px 8px; border-bottom: 1px solid var(--line); }
.article-index { font-family: var(--font-serif); color: #a19589; font-size: 25px; }
.article-list h3 { font-size: clamp(20px,2.5vw,28px); }
.status { padding: 6px 12px; color: #6e645c; border: 1px solid var(--line); border-radius: 999px; font-size: 11px; }

.about-section { color: #fff; background: var(--red); }
.about-section .eyebrow { color: #efbd6d; }
.about-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 90px; }
.about-copy { color: rgba(255,255,255,.82); font-size: 17px; }
.principles { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.principles span { padding: 8px 15px; border: 1px solid rgba(255,255,255,.34); border-radius: 999px; font-size: 12px; }
.site-footer { padding: 42px 0; color: #d8ccc1; background: #1e1a17; }
.footer-grid { display: flex; justify-content: space-between; align-items: end; gap: 30px; }
.footer-grid strong { color: #fff; font-family: var(--font-serif); font-size: 23px; }
.footer-grid p { margin: 7px 0 0; font-size: 12px; }
.footer-grid > div:last-child { text-align: right; }

:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }

@media (max-width: 1080px) {
  .menu-button { display: block; }
  .site-nav {
    position: absolute; top: 76px; left: 16px; right: 16px; display: none;
    padding: 14px; background: #fffaf2; border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow);
  }
  .site-nav.is-open { display: grid; grid-template-columns: repeat(2,1fr); }
  .site-nav a { padding: 12px; }
  .card-grid-four { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 760px) {
  html { scroll-padding-top: 74px; }
  .container { width: min(100% - 28px, 1180px); }
  .nav-shell { width: calc(100% - 24px); min-height: 68px; }
  .site-nav { top: 68px; left: 12px; right: 12px; }
  .site-nav.is-open { grid-template-columns: 1fr; max-height: 72vh; overflow: auto; }
  .brand strong { font-size: 17px; }
  .brand small { font-size: 9px; }
  .brand-mark { width: 37px; height: 37px; }
  .hero { padding-top: 58px; }
  .hero-grid, .split, .video-layout, .about-grid { grid-template-columns: 1fr; gap: 42px; }
  .hero h1 { font-size: clamp(45px,14vw,66px); }
  .lead { font-size: 17px; }
  .hero-art { min-height: 330px; }
  .notice { margin-top: 35px; }
  .feature-row { grid-template-columns: repeat(2,1fr); }
  .feature-row div:nth-child(2) { border-right: 0; }
  .feature-row div { padding: 18px 14px; }
  .section { padding: 74px 0; }
  .section-heading { display: block; margin-bottom: 32px; }
  .section-heading > p { margin-top: 16px; }
  .card-grid-four, .heritage-grid, .story-grid { grid-template-columns: 1fr; }
  .project-card { min-height: 310px; }
  .landscape-card { height: 390px; }
  .story-card.featured { margin-top: 0; }
  .video-layout { gap: 34px; }
  .article-list article { grid-template-columns: 42px 1fr; gap: 12px; }
  .article-list .status { display: none; }
  .footer-grid { display: block; }
  .footer-grid > div:last-child { margin-top: 28px; text-align: left; }
}

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