:root {
  --green: #657064;
  --paper: #f1ede4;
  --soil: #897b6b;
  --ink: #20211d;
  --paper-muted: #e5dfd2;
  --line-dark: rgba(241, 237, 228, 0.17);
  --line-light: rgba(32, 33, 29, 0.18);
  --sans: "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", serif;
  --max: 1440px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
section[id] { scroll-margin-top: 82px; }

.site-header {
  position: fixed;
  z-index: 50;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px clamp(24px, 4.4vw, 72px);
  color: var(--ink);
  border-bottom: 1px solid var(--line-light);
  background: rgba(241, 237, 228, 0.9);
  backdrop-filter: blur(16px);
}
.brand { display: flex; gap: 18px; align-items: baseline; letter-spacing: .08em; }
.brand span { font-family: var(--serif); font-size: 16px; }
.brand small { color: rgba(32,33,29,.45); font-size: 10px; letter-spacing: .2em; }
.desktop-nav { display: flex; align-items: center; gap: 30px; font-size: 12px; color: rgba(32,33,29,.6); }
.desktop-nav a { transition: color .25s ease; }
.desktop-nav a:hover { color: var(--ink); }
.desktop-nav .nav-cta { padding: 9px 16px; border: 1px solid var(--green); color: var(--green); }

.hero {
  min-height: 88svh;
  max-width: none;
  padding: clamp(120px, 15vh, 170px) clamp(24px, 7vw, 112px) clamp(68px, 10vh, 105px);
  display: grid;
  grid-template-columns: minmax(0, 1.22fr) minmax(340px, .78fr);
  gap: clamp(42px, 7vw, 120px);
  align-items: center;
  color: var(--ink);
  background:
    radial-gradient(circle at 82% 28%, rgba(101,112,100,.18), transparent 29%),
    linear-gradient(132deg, #f4f0e8 0%, var(--paper) 62%, #e2ddd2 100%);
  overflow: hidden;
  position: relative;
}
.hero::after {
  content: "PRIVATE\A VISUAL";
  white-space: pre;
  position: absolute;
  right: -2vw;
  bottom: -5vw;
  color: rgba(101,112,100,.055);
  font: 800 clamp(100px, 17vw, 260px)/.68 var(--sans);
  letter-spacing: -.08em;
  pointer-events: none;
}
.hero-copy, .hero-ledger { position: relative; z-index: 1; }
.eyebrow, .section-kicker, .section-index {
  margin: 0 0 36px;
  text-transform: uppercase;
  letter-spacing: .19em;
  font-size: 11px;
}
.eyebrow { color: var(--soil); }
.hero h1 {
  max-width: 930px;
  margin: 0;
  font: 300 clamp(38px, 4.5vw, 68px)/1.16 var(--serif);
  letter-spacing: -.055em;
}
.hero h1 span { color: var(--green); }
.hero-intro {
  max-width: 720px;
  margin: 40px 0 0;
  color: #5c5d56;
  font-size: clamp(16px, 1.1vw, 18px);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 42px; }
.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border: 1px solid transparent;
  font-size: 13px;
  letter-spacing: .05em;
  transition: transform .25s ease, background .25s ease, color .25s ease;
}
.button:hover { transform: translateY(-2px); }
.button-solid { background: var(--green); color: var(--paper); }
.button-ghost { border-color: rgba(101,112,100,.48); color: var(--ink); }
.button-ghost:hover { background: rgba(101,112,100,.09); }

.hero-ledger {
  width: min(100%, 520px);
  justify-self: end;
  padding: clamp(24px, 3vw, 42px);
  color: var(--paper);
  border: 1px solid rgba(101,112,100,.15);
  background: var(--green);
  box-shadow: 0 34px 90px rgba(67,75,67,.2);
  backdrop-filter: blur(8px);
}
.ledger-head { display: flex; justify-content: space-between; color: rgba(241,237,228,.43); font-size: 10px; letter-spacing: .14em; }
.status { display: flex; gap: 7px; align-items: center; }
.status i { width: 6px; height: 6px; border-radius: 50%; background: #a8b8a5; box-shadow: 0 0 12px rgba(168,184,165,.8); }
.ledger-statement { margin: 56px 0 30px; font: 300 clamp(22px, 2vw, 30px)/1.4 var(--serif); }
.ledger-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line-dark); border-left: 1px solid var(--line-dark); }
.ledger-grid div { min-height: 86px; display: flex; flex-direction: column; justify-content: space-between; padding: 16px; border-right: 1px solid var(--line-dark); border-bottom: 1px solid var(--line-dark); }
.ledger-grid strong { color: rgba(241,237,228,.38); font: 400 11px/1 var(--sans); }
.ledger-grid span { font-size: 13px; }
.ledger-path { display: flex; align-items: center; gap: 10px; margin: 32px 0 0; color: rgba(241,237,228,.62); font-size: 11px; letter-spacing: .08em; }
.ledger-path b { height: 1px; flex: 1; background: rgba(241,237,228,.18); }
.ledger-note { margin: 24px 0 0; padding-top: 20px; border-top: 1px solid var(--line-dark); color: rgba(241,237,228,.48); font-size: 12px; }

.understanding {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(90px, 11vw, 155px) clamp(24px, 7vw, 112px);
  display: grid;
  grid-template-columns: .6fr 1.15fr 1fr;
  gap: clamp(30px, 5vw, 84px);
  align-items: start;
}
.understanding-signals { grid-column: 2 / -1; display: grid; grid-template-columns: repeat(3,1fr); margin-top: 22px; border-top: 1px solid var(--line-light); }
.understanding-signals div { display: grid; gap: 7px; padding: 28px 24px 0 0; }
.understanding-signals div + div { padding-left: 24px; border-left: 1px solid var(--line-light); }
.understanding-signals strong { font: 400 17px/1.3 var(--serif); }
.understanding-signals span { color: #686960; font-size: 13px; }
.section-index { color: var(--soil); }
.section-kicker { color: var(--green); margin-bottom: 26px; }
.statement-column h2 {
  margin: 0;
  font: 300 clamp(34px, 3.6vw, 54px)/1.24 var(--serif);
  letter-spacing: -.045em;
}
.prose-column { padding-top: 50px; color: #55564f; }
.prose-column p { margin: 0 0 24px; }
.prose-column .lead { color: var(--ink); font-size: 17px; font-weight: 600; }
.prose-column blockquote {
  margin: 44px 0 0;
  padding: 25px 0 0 24px;
  border-top: 1px solid var(--line-light);
  border-left: 3px solid var(--green);
  color: var(--ink);
  font: 300 20px/1.6 var(--serif);
}
.section-shell { width: min(100%, var(--max)); margin: 0 auto; padding-inline: clamp(24px, 7vw, 112px); }

.method-intro h2,
.system-head h2,
.assets-head h2,
.scenes-head h2,
.authority-layout h2,
.fit-head h2,
.apply-copy h2 {
  margin: 0;
  font: 300 clamp(34px, 3.8vw, 56px)/1.22 var(--serif);
  letter-spacing: -.05em;
}
.method-section { padding: clamp(92px, 11vw, 155px) clamp(24px, 7vw, 112px); background: var(--green); color: var(--paper); }
.method-intro { width: min(100%, calc(var(--max) - clamp(48px,14vw,224px))); margin: 0 auto 72px; display: grid; grid-template-columns: .45fr 1.3fr .55fr; gap: clamp(24px,4vw,70px); align-items: end; }
.method-intro .section-index { color: rgba(241,237,228,.38); align-self: start; }
.light-kicker { color: var(--green); }
.method-section .light-kicker { color: rgba(241,237,228,.76); }
.method-side { margin: 0 0 8px; color: rgba(241,237,228,.56); font-size: 14px; }
.method-list { width: min(100%, calc(var(--max) - clamp(48px,14vw,224px))); margin: 0 auto; border-top: 1px solid var(--line-dark); }
.method-step { display: grid; grid-template-columns: 70px minmax(170px,.75fr) minmax(280px,1.2fr) 100px; gap: 28px; align-items: start; padding: 36px 0; border-bottom: 1px solid var(--line-dark); }
.step-no { color: rgba(241,237,228,.55); font: 300 24px/1 var(--serif); }
.step-title small { color: rgba(241,237,228,.5); font-size: 9px; letter-spacing: .14em; }
.step-title h3 { margin: 10px 0 0; font: 300 25px/1.25 var(--serif); }
.step-copy p { max-width: 620px; margin: 0; color: rgba(241,237,228,.8); }
.step-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 24px; }
.step-tags span { padding: 5px 10px; border: 1px solid rgba(241,237,228,.24); color: rgba(241,237,228,.64); font-size: 11px; }
.step-output { color: rgba(241,237,228,.45); font-size: 9px; letter-spacing: .12em; text-align: right; }
.step-output strong { display: block; margin-top: 8px; color: rgba(241,237,228,.9); font: 400 13px/1.3 var(--serif); letter-spacing: 0; }
.production-step { margin-inline: -26px; padding-inline: 26px; background: rgba(32,33,29,.11); border-top: 1px solid rgba(241,237,228,.2); }

.system-section { padding: clamp(92px, 11vw, 155px) 0; background: var(--paper-muted); }
.system-head, .scenes-head { display: grid; grid-template-columns: 1.3fr .7fr; gap: clamp(40px,8vw,120px); align-items: end; }
.system-head > p, .scenes-head > p { max-width: 450px; margin: 0 0 8px; color: #63645d; }
.system-grid { display: grid; grid-template-columns: repeat(3,1fr); margin-top: 66px; border-top: 1px solid var(--line-light); border-left: 1px solid var(--line-light); }
.system-grid article { min-height: 220px; padding: 26px; border-right: 1px solid var(--line-light); border-bottom: 1px solid var(--line-light); }
.system-grid span { color: var(--soil); font-size: 11px; }
.system-grid h3 { margin: 58px 0 12px; font: 300 23px/1.25 var(--serif); }
.system-grid p { margin: 0; color: #66675f; font-size: 14px; }

.assets-section { padding: clamp(92px,11vw,160px) 0; overflow: hidden; background: var(--paper); color: var(--ink); }
.assets-head { max-width: 1040px; }
.assets-head > p:last-child { max-width: 700px; margin: 32px 0 0; color: #62635c; font-size: 16px; }
.asset-map { min-height: 650px; margin: 80px auto 58px; position: relative; }
.asset-map::before, .asset-map::after { content: ""; position: absolute; inset: 50% auto auto 50%; border: 1px solid var(--line-light); border-radius: 50%; transform: translate(-50%,-50%); }
.asset-map::before { width: 620px; height: 620px; }
.asset-map::after { width: 390px; height: 390px; }
.asset-core { position: absolute; z-index: 2; top: 50%; left: 50%; width: 250px; aspect-ratio: 1; transform: translate(-50%,-50%); border-radius: 50%; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; background: var(--green); box-shadow: 0 0 100px rgba(101,112,100,.22); }
.asset-core { color: var(--paper); }
.asset-core span { font-size: 9px; letter-spacing: .2em; opacity: .6; }
.asset-core strong { margin: 13px 0 7px; max-width: 160px; font: 300 22px/1.4 var(--serif); }
.asset-core small { opacity: .55; }
.asset-orbit { position: absolute; z-index: 3; width: 230px; padding: 20px; border: 1px solid var(--line-light); background: var(--paper-muted); }
.asset-orbit b { display: block; margin-bottom: 7px; font: 400 17px/1.25 var(--serif); }
.asset-orbit span { color: #66675f; font-size: 12px; }
.orbit-one { left: 7%; top: 16%; }.orbit-two { right: 4%; top: 19%; }.orbit-three { left: 12%; bottom: 12%; }.orbit-four { right: 9%; bottom: 10%; }
.asset-principles { display: grid; grid-template-columns: repeat(3,1fr); border-top: 1px solid var(--line-light); }
.asset-principles article { padding: 30px 30px 0 0; }
.asset-principles article + article { border-left: 1px solid var(--line-light); padding-left: 30px; }
.asset-principles b { font: 400 17px/1.25 var(--serif); }
.asset-principles p { color: #66675f; font-size: 14px; }

.scenes-section { padding: clamp(92px,11vw,155px) 0; background: var(--paper-muted); }
.scene-groups { margin-top: 70px; border-top: 1px solid var(--line-light); }
.scene-groups article { display: grid; grid-template-columns: .7fr 1.1fr .9fr; gap: 40px; align-items: center; min-height: 128px; padding: 24px 0; border-bottom: 1px solid var(--line-light); }
.scene-groups small { color: var(--green); font-size: 10px; letter-spacing: .13em; }
.scene-groups article > div { display: flex; flex-wrap: wrap; gap: 9px; }
.scene-groups span { padding: 7px 12px; color: var(--ink); border: 1px solid rgba(32,33,29,.22); font-size: 14px; }
.scene-groups p { margin: 0; color: #686960; font-size: 14px; }

.authority-section { position: relative; overflow: hidden; padding: clamp(100px,12vw,165px) 0; background: var(--paper); color: var(--ink); }
.authority-backdrop { position: absolute; left: -4vw; bottom: -17vw; font: 900 55vw/.8 var(--sans); letter-spacing: -.12em; color: rgba(101,112,100,.055); user-select: none; }
.authority-layout { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(50px,10vw,160px); }
.authority-copy { padding-top: 90px; color: #62635c; }
.authority-copy .lead { color: var(--ink); font-size: 17px; font-weight: 600; }
.authority-copy blockquote { margin: 40px 0 0; padding: 22px 0 0; border-top: 1px solid var(--line-light); color: var(--ink); font: 300 22px/1.55 var(--serif); }

.fit-section { padding: clamp(92px,11vw,155px) 0; background: var(--paper-muted); }
.fit-head { display: grid; grid-template-columns: .55fr 1.45fr; gap: 40px; }
.fit-head .section-index { grid-row: span 2; }
.fit-head .section-kicker { margin: 0 0 24px; }
.fit-list { display: grid; grid-template-columns: repeat(2,1fr); margin-top: 68px; border-top: 1px solid var(--line-light); border-left: 1px solid var(--line-light); }
.fit-list article { min-height: 145px; padding: 24px; border-right: 1px solid var(--line-light); border-bottom: 1px solid var(--line-light); display: grid; grid-template-columns: 42px 1fr; gap: 18px; align-items: start; }
.fit-list span { color: var(--soil); font-size: 11px; }
.fit-list p { margin: 28px 0 0; max-width: 520px; font: 300 18px/1.6 var(--serif); }

.apply-section { background: var(--green); color: var(--paper); }
.apply-grid { min-height: 75svh; padding: clamp(105px,13vw,180px) clamp(24px,7vw,112px) 86px; display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(60px,10vw,160px); align-items: start; background: radial-gradient(circle at 80% 28%, rgba(32,33,29,.13), transparent 27%); }
.apply-copy h2 { font-size: clamp(38px,4.6vw,68px); }
.result-lead { max-width: 600px; margin: 30px 0 0; color: rgba(241,237,228,.68); font-size: 16px; }
.result-list { border-top: 1px solid var(--line-dark); }
.result-list article { display: grid; grid-template-columns: 42px 1fr; gap: 22px; padding: 24px 0; border-bottom: 1px solid var(--line-dark); }
.result-list article > span { color: rgba(241,237,228,.45); font-size: 10px; letter-spacing: .12em; }
.result-list h3 { margin: 0 0 7px; font: 300 21px/1.3 var(--serif); }
.result-list p { margin: 0; color: rgba(241,237,228,.66); font-size: 14px; }
.result-conclusion { margin-top: 32px; padding: 26px; border: 1px solid rgba(241,237,228,.18); background: rgba(32,33,29,.12); }
.result-conclusion strong { font: 400 18px/1.4 var(--serif); }
.result-conclusion p { margin: 10px 0 16px; color: var(--paper); }
.result-conclusion small { color: rgba(241,237,228,.48); font-size: 11px; }
.apply-section .eyebrow { color: rgba(241,237,228,.68); }
.apply-section footer { min-height: 84px; padding: 24px clamp(24px,4.4vw,72px); display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; align-items: center; border-top: 1px solid var(--line-dark); color: rgba(241,237,228,.38); font-size: 11px; letter-spacing: .08em; }
.apply-section footer span:first-child { color: var(--paper); font-family: var(--serif); font-size: 16px; }
.apply-section footer a { text-align: right; }

[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
[data-reveal].is-visible { opacity: 1; transform: none; }

@media (max-width: 960px) {
  .desktop-nav a:not(.nav-cta) { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 150px; }
  .hero-ledger { justify-self: stretch; width: 100%; }
  .understanding { grid-template-columns: 1fr; }
  .understanding-signals { grid-column: auto; }
  .prose-column { padding-top: 0; max-width: 720px; }
  .section-index { margin-bottom: 0; }
  .fit-head, .system-head, .scenes-head, .authority-layout, .apply-grid { grid-template-columns: 1fr; }
  .method-intro { grid-template-columns: 1fr; }
  .method-intro .section-index { margin-bottom: 10px; }
  .method-side { max-width: 600px; }
  .method-step { grid-template-columns: 54px 190px 1fr; }
  .step-output { display: none; }
  .system-grid { grid-template-columns: repeat(2,1fr); }
  .asset-map { min-height: 620px; transform: scale(.88); margin-inline: -6%; }
  .scene-groups article { grid-template-columns: .7fr 1.3fr; }
  .scene-groups article > p { grid-column: 2; }
  .authority-copy { padding-top: 0; max-width: 700px; }
  .fit-head .section-index { grid-row: auto; }
  .result-list { max-width: 700px; }
}

@media (max-width: 620px) {
  .site-header { padding: 15px 18px; }
  .brand small { display: none; }
  .desktop-nav .nav-cta { padding: 7px 11px; }
  .hero { padding: 112px 20px 64px; gap: 48px; }
  .hero h1 { font-size: 38px; }
  .hero-intro { font-size: 16px; }
  .hero-actions { display: grid; grid-template-columns: 1fr; }
  .button { width: 100%; }
  .ledger-statement { margin-top: 50px; }
  .understanding { padding: 78px 20px; }
  .statement-column h2 { font-size: 34px; }
  .prose-column .lead { font-size: 17px; }
  .prose-column blockquote { font-size: 18px; }
  .method-section, .system-section, .assets-section, .scenes-section, .authority-section, .fit-section { padding-block: 76px; }
  .method-intro h2, .system-head h2, .assets-head h2, .scenes-head h2, .authority-layout h2, .fit-head h2 { font-size: 32px; }
  .understanding-signals, .asset-principles { grid-template-columns: 1fr; }
  .understanding-signals div + div, .asset-principles article + article { border-left: 0; padding-left: 0; }
  .understanding-signals div { padding-block: 22px; border-bottom: 1px solid var(--line-light); }
  .method-section { padding-inline: 20px; }
  .method-intro, .method-list { width: 100%; }
  .method-intro { margin-bottom: 62px; }
  .method-step { grid-template-columns: 38px 1fr; gap: 18px; padding: 34px 0; }
  .step-copy { grid-column: 2; }
  .step-title h3 { font-size: 24px; }
  .production-step { margin-inline: -14px; padding-inline: 14px; }
  .system-grid { grid-template-columns: 1fr; margin-top: 58px; }
  .system-grid article { min-height: 185px; }
  .asset-map { min-height: 770px; margin: 60px -8px 10px; transform: none; }
  .asset-map::before { width: 390px; height: 390px; }
  .asset-map::after { width: 280px; height: 280px; }
  .asset-core { width: 205px; }
  .asset-core strong { font-size: 20px; }
  .asset-orbit { width: 190px; padding: 14px; }
  .orbit-one { left: 0; top: 3%; }.orbit-two { right: 0; top: 21%; }.orbit-three { left: 0; bottom: 18%; }.orbit-four { right: 0; bottom: 2%; }
  .asset-principles { margin-top: 50px; }
  .asset-principles article { padding-block: 22px; border-bottom: 1px solid var(--line-light); }
  .scenes-head { gap: 28px; }
  .scene-groups { margin-top: 58px; }
  .scene-groups article { grid-template-columns: 1fr; gap: 16px; padding-block: 30px; }
  .scene-groups article > p { grid-column: 1; }
  .fit-list { grid-template-columns: 1fr; margin-top: 60px; }
  .fit-list p { margin-top: 18px; }
  .apply-grid { min-height: auto; padding: 100px 20px 78px; }
  .apply-copy h2 { font-size: 36px; }
  .result-list article { grid-template-columns: 32px 1fr; gap: 14px; }
  .result-conclusion { padding: 22px; }
  .apply-section footer { grid-template-columns: 1fr; }
  .apply-section footer a { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}