:root {
  --ink: #14291f;
  --forest: #163f30;
  --green: #2d6a4f;
  --sage: #9baa86;
  --paper: #f3f0e7;
  --cream: #e8e2d2;
  --orange: #dc6d3a;
  --line: rgba(20, 41, 31, 0.18);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.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; }
.noise { position: fixed; inset: 0; pointer-events: none; z-index: 20; opacity: .035; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E"); }
.section-shell { width: min(1240px, calc(100% - 80px)); margin: 0 auto; }

.site-header { width: min(1400px, calc(100% - 72px)); height: 96px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; position: relative; z-index: 30; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-family: "Noto Serif SC", "Songti SC", serif; font-size: 23px; font-weight: 700; letter-spacing: .08em; }
.brand-mark { width: 36px; height: 36px; display: grid; place-items: center; color: var(--forest); }
.brand-mark svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.8; }
.site-nav { display: flex; align-items: center; gap: 38px; font-size: 14px; }
.site-nav > a:not(.nav-cta) { position: relative; }
.site-nav > a:not(.nav-cta)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -7px; height: 1px; background: var(--ink); transition: right .25s ease; }
.site-nav > a:hover::after { right: 0; }
.nav-cta { border: 1px solid var(--ink); border-radius: 999px; padding: 11px 20px; transition: color .25s, background .25s; }
.nav-cta:hover { color: var(--paper); background: var(--ink); }
.menu-button { display: none; border: 0; background: transparent; padding: 10px; }

.hero { min-height: calc(100vh - 96px); display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 7vw; padding: 48px 0 105px; }
.eyebrow { display: flex; align-items: center; gap: 12px; color: var(--green); font-size: 11px; letter-spacing: .2em; font-weight: 700; }
.eyebrow span { width: 30px; height: 1px; background: currentColor; }
.hero h1 { margin: 26px 0 30px; font-family: "Noto Serif SC", "Songti SC", STSong, serif; font-size: clamp(66px, 7.2vw, 108px); font-weight: 600; line-height: 1.08; letter-spacing: -.055em; }
.hero h1 em { color: var(--orange); font-style: normal; }
.hero h1 .dot { color: var(--green); }
.hero-lead { max-width: 620px; margin: 0; font-size: 17px; line-height: 1.95; letter-spacing: .02em; color: rgba(20, 41, 31, .72); }
.hero-actions { margin-top: 42px; display: flex; align-items: center; gap: 32px; }
.button { min-height: 54px; display: inline-flex; align-items: center; justify-content: space-between; gap: 34px; padding: 0 24px; border: 1px solid; font-size: 14px; letter-spacing: .08em; transition: transform .25s, background .25s; }
.button:hover { transform: translateY(-3px); }
.button-primary { color: var(--paper); background: var(--forest); border-color: var(--forest); }
.button-primary:hover { background: var(--green); }
.text-link { font-size: 14px; border-bottom: 1px solid var(--line); padding: 15px 0 8px; }

.hero-visual { aspect-ratio: 1; position: relative; display: grid; place-items: center; }
.hero-visual::before { content: ""; position: absolute; inset: 8%; border-radius: 50%; background: radial-gradient(circle at 38% 35%, #fffdf4 0, #d9dfc9 40%, #afbea1 70%, #78947b 100%); box-shadow: inset -20px -20px 50px rgba(21, 61, 46, .16), 0 35px 80px rgba(22, 63, 48, .13); }
.hero-visual::after { content: ""; position: absolute; inset: 5%; border: 1px solid rgba(20, 41, 31, .18); border-radius: 48% 52% 45% 55%; transform: rotate(-12deg); }
.orbit { position: absolute; z-index: 2; border: 1px solid rgba(20, 41, 31, .35); border-radius: 50%; }
.orbit-one { width: 104%; height: 36%; transform: rotate(22deg); }
.orbit-two { width: 102%; height: 41%; transform: rotate(-49deg); }
.visual-core { z-index: 3; text-align: center; display: flex; flex-direction: column; align-items: center; }
.core-label { width: 50px; height: 50px; display: grid; place-items: center; margin-bottom: 14px; border: 1px solid var(--ink); border-radius: 50%; font: 600 12px Georgia, serif; letter-spacing: .12em; }
.visual-core strong { font-family: "Noto Serif SC", "Songti SC", serif; font-size: clamp(40px, 5vw, 72px); font-weight: 500; letter-spacing: .2em; margin-right: -.2em; }
.visual-core small { margin-top: 13px; font-size: 11px; letter-spacing: .25em; opacity: .65; }
.satellite { position: absolute; z-index: 4; width: 54px; height: 54px; display: grid; place-items: center; border-radius: 50%; background: var(--orange); color: white; font-size: 12px; box-shadow: 0 12px 30px rgba(77, 52, 35, .2); }
.satellite-a { top: 10%; left: 25%; }
.satellite-b { right: 2%; top: 54%; background: var(--forest); }
.satellite-c { bottom: 5%; left: 20%; background: #d9d1bd; color: var(--ink); }
.coordinate { position: absolute; bottom: 7%; right: 15%; z-index: 3; font: 9px/1.5 monospace; letter-spacing: .1em; opacity: .48; }

.manifesto { padding: 150px 0; background: var(--forest); color: var(--paper); }
.manifesto-grid { display: grid; grid-template-columns: 1fr 3fr; gap: 40px; }
.section-index { margin: 7px 0 0; color: var(--orange); font: 700 11px/1.4 monospace; letter-spacing: .16em; text-transform: uppercase; }
.manifesto h2, .section-heading h2, .pathway h2, .contact h2 { font-family: "Noto Serif SC", "Songti SC", serif; font-weight: 500; }
.manifesto h2 { margin: 0; max-width: 900px; font-size: clamp(38px, 4.6vw, 67px); line-height: 1.45; letter-spacing: -.03em; }
.manifesto h2 span { color: #b7c49c; }
.manifesto-detail { display: flex; gap: 70px; margin-top: 58px; padding-top: 28px; border-top: 1px solid rgba(243, 240, 231, .2); color: rgba(243, 240, 231, .65); font-size: 14px; }

.agents { padding: 150px 0; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 60px; margin-bottom: 72px; }
.section-heading h2 { margin: 20px 0 0; font-size: clamp(42px, 4.7vw, 68px); line-height: 1.3; }
.section-heading > p { max-width: 370px; margin: 0 0 10px; color: rgba(20, 41, 31, .62); font-size: 15px; line-height: 1.9; }
.agent-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.agent-card { min-height: 390px; padding: 29px; display: flex; flex-direction: column; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); position: relative; overflow: hidden; transition: color .35s, background .35s, transform .35s; }
.agent-card:hover { z-index: 2; color: var(--paper); background: var(--forest); transform: translateY(-6px); }
.agent-card.featured { background: #ded9c9; }
.agent-card.featured:hover { background: var(--forest); }
.card-number { font: 10px monospace; letter-spacing: .15em; opacity: .55; }
.card-icon { width: 58px; height: 58px; margin: 45px 0 28px; }
.card-icon svg { width: 100%; height: 100%; fill: none; stroke: var(--orange); stroke-width: 1.35; stroke-linecap: round; stroke-linejoin: round; }
.agent-card h3 { margin: 0 0 14px; font: 500 27px "Noto Serif SC", "Songti SC", serif; }
.agent-card p { margin: 0; max-width: 310px; color: rgba(20, 41, 31, .62); font-size: 14px; line-height: 1.85; transition: color .35s; }
.agent-card:hover p { color: rgba(243, 240, 231, .68); }
.card-tag { margin-top: auto; padding-top: 24px; font: 10px monospace; letter-spacing: .18em; opacity: .55; }

.pathway { padding: 135px 0; background: #ded8c7; }
.pathway-title { display: flex; justify-content: space-between; align-items: flex-start; gap: 40px; }
.pathway h2 { max-width: 700px; margin: 0; font-size: clamp(38px, 4.4vw, 62px); line-height: 1.3; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 90px; border-top: 1px solid var(--ink); }
.step { padding: 22px 18px 0 0; position: relative; display: flex; flex-direction: column; }
.step::before { content: ""; width: 9px; height: 9px; position: absolute; top: -5px; left: 0; border-radius: 50%; background: var(--orange); }
.step b { font: 10px monospace; opacity: .5; }
.step span { margin-top: 36px; font: 500 23px "Noto Serif SC", "Songti SC", serif; }
.step small { margin-top: 10px; font-size: 12px; letter-spacing: .08em; opacity: .55; }

.contact { padding: 120px 0; }
.contact-panel { min-height: 570px; padding: 82px 9%; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; position: relative; overflow: hidden; color: var(--paper); background: var(--orange); }
.contact .eyebrow { color: var(--paper); opacity: .7; }
.contact h2 { margin: 24px 0; font-size: clamp(42px, 5vw, 70px); line-height: 1.35; position: relative; z-index: 2; }
.contact-panel > p:not(.eyebrow) { max-width: 650px; margin: 0 0 36px; font-size: 15px; line-height: 1.9; opacity: .76; position: relative; z-index: 2; }
.button-light { background: var(--paper); color: var(--ink); border-color: var(--paper); position: relative; z-index: 2; }
.contact-orbit { width: 500px; height: 500px; position: absolute; right: -90px; top: 30px; border: 1px solid rgba(243, 240, 231, .28); border-radius: 50%; }
.contact-orbit::before, .contact-orbit::after { content: ""; position: absolute; border: 1px solid rgba(243, 240, 231, .22); border-radius: 50%; }
.contact-orbit::before { inset: 65px -100px; transform: rotate(42deg); }
.contact-orbit::after { inset: 140px -170px; transform: rotate(-35deg); }

.site-footer { min-height: 150px; display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: center; border-top: 1px solid var(--line); font-size: 11px; letter-spacing: .08em; color: rgba(20, 41, 31, .6); }
.footer-brand { color: var(--ink); }
.site-footer p:nth-child(2) { text-align: center; }
.site-footer p:last-child { text-align: right; }
.footer-record { line-height: 2; }
.footer-record a { transition: color .2s; }
.footer-record a:hover { color: var(--orange); }

.reveal { opacity: 0; transform: translateY(26px); transition: opacity .75s ease, transform .75s cubic-bezier(.2,.7,.2,1); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal-delay { transition-delay: .14s; }

@media (max-width: 900px) {
  .section-shell { width: min(100% - 40px, 680px); }
  .site-header { width: calc(100% - 40px); height: 80px; }
  .menu-button { width: 44px; height: 44px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 7px; position: relative; z-index: 2; }
  .menu-button span:not(.sr-only) { display: block; width: 24px; height: 1px; background: var(--ink); transition: transform .25s; }
  .menu-open .menu-button span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-open .menu-button span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }
  .site-nav { display: none; position: fixed; inset: 0; padding: 120px 30px 50px; flex-direction: column; align-items: flex-start; background: var(--paper); font: 500 30px "Noto Serif SC", "Songti SC", serif; }
  .menu-open .site-nav { display: flex; }
  .nav-cta { margin-top: auto; font: 400 15px sans-serif; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 70px; padding: 70px 0 110px; }
  .hero h1 { font-size: clamp(56px, 17vw, 82px); }
  .hero-visual { width: min(100%, 570px); margin: 0 auto; }
  .manifesto { padding: 100px 0; }
  .manifesto-grid { grid-template-columns: 1fr; gap: 35px; }
  .manifesto-detail { flex-direction: column; gap: 6px; }
  .agents { padding: 100px 0; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .agent-grid { grid-template-columns: repeat(2, 1fr); }
  .pathway { padding: 100px 0; }
  .pathway-title { flex-direction: column; }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 45px 0; }
  .contact { padding: 60px 0; }
  .contact-panel { min-height: 570px; padding: 60px 40px; }
  .contact-orbit { right: -300px; }
}

@media (max-width: 560px) {
  .brand { font-size: 20px; }
  .brand-mark { width: 31px; height: 31px; }
  .hero { padding-top: 48px; }
  .hero h1 { margin-top: 20px; font-size: 54px; letter-spacing: -.06em; }
  .hero-lead { font-size: 15px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 10px; }
  .hero-visual { width: calc(100% - 4px); }
  .satellite { width: 46px; height: 46px; font-size: 11px; }
  .manifesto h2 { font-size: 34px; }
  .section-heading h2, .pathway h2 { font-size: 38px; }
  .agent-grid { grid-template-columns: 1fr; }
  .agent-card { min-height: 365px; }
  .steps { grid-template-columns: 1fr; border-top: 0; margin-top: 60px; }
  .step { padding: 20px 0; border-top: 1px solid var(--ink); }
  .contact { width: 100%; }
  .contact-panel { min-height: 600px; padding: 55px 24px; }
  .contact h2 { font-size: 37px; }
  .site-footer { width: calc(100% - 40px); grid-template-columns: 1fr; gap: 15px; padding: 38px 0; }
  .site-footer p { margin: 0; }
  .site-footer p:nth-child(2), .site-footer p:last-child { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation: none !important; }
}