@font-face {
  font-family: "Josefin Local";
  src: url("assets/JosefinSans.ttf") format("truetype");
  font-display: swap;
}

:root {
  --ink: oklch(23% 0.035 195);
  --ink-soft: oklch(39% 0.026 194);
  --navy: oklch(25% 0.04 196);
  --navy-deep: oklch(18% 0.035 196);
  --ivory: oklch(97% 0.016 84);
  --paper: oklch(99% 0.007 83);
  --warm: oklch(94% 0.027 74);
  --gold: oklch(72% 0.14 56);
  --coral: oklch(69% 0.15 35);
  --mint: oklch(69% 0.072 183);
  --line: oklch(84% 0.025 79);
  --muted: oklch(58% 0.02 190);
  --sans: "Avenir Next", "Helvetica Neue", "PingFang SC", "Noto Sans CJK SC", system-ui, sans-serif;
  --display: "Josefin Local", "Avenir Next", sans-serif;
  --serif: "Songti SC", "STSong", "Source Han Serif SC", Georgia, serif;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  line-height: 1.55;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 1000; padding: 10px 14px; background: white; transform: translateY(-150%); }
.skip-link:focus { transform: none; }

.topbar {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  height: 72px;
  padding: 0 clamp(22px, 4vw, 64px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid color-mix(in oklch, var(--ink) 12%, transparent);
  background: color-mix(in oklch, var(--paper) 88%, transparent);
  backdrop-filter: blur(18px);
}
.brand-lockup { display: flex; align-items: center; gap: 12px; text-decoration: none; font: 700 .76rem var(--display); letter-spacing: .13em; }
.brand-lockup img { width: 28px; height: 28px; object-fit: contain; }
.brand-lockup i { color: var(--coral); font-style: normal; margin: 0 3px; }
.topbar-meta { display: flex; align-items: center; gap: 24px; }
.edition { color: var(--muted); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }
.language-switch { display: flex; border: 1px solid var(--line); border-radius: 100px; padding: 3px; background: var(--paper); }
.language-switch button { border: 0; background: transparent; min-width: 38px; min-height: 30px; border-radius: 100px; color: var(--muted); font: 700 .7rem var(--sans); cursor: pointer; }
.language-switch button[aria-pressed="true"] { background: var(--navy); color: white; }

.section { position: relative; padding: clamp(104px, 12vw, 180px) clamp(22px, 5vw, 76px); }
.section > * { max-width: var(--max); margin-left: auto; margin-right: auto; }
.section-dark { color: var(--ivory); background: var(--navy-deep); }
.section-warm { background: var(--warm); }
.section-number { max-width: var(--max); margin: 0 auto clamp(60px, 8vw, 110px); color: var(--muted); font-size: .66rem; letter-spacing: .22em; }
.section-number.light { color: color-mix(in oklch, var(--ivory) 52%, transparent); }
.eyebrow { margin: 0 0 24px; color: var(--coral); font-size: .7rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-family: var(--serif); font-weight: 500; letter-spacing: -.035em; line-height: 1.08; }
h1 { font-size: clamp(3.4rem, 7.8vw, 8.2rem); }
h2 { font-size: clamp(2.5rem, 5vw, 5.3rem); }
.section-intro { max-width: 890px; margin-left: 0; }
.section-intro p:not(.eyebrow) { max-width: 620px; color: var(--ink-soft); font-size: clamp(1rem, 1.5vw, 1.24rem); }
.section-intro.light p:not(.eyebrow) { color: color-mix(in oklch, var(--ivory) 72%, transparent); }
.lead { font-family: var(--serif); font-size: clamp(1.45rem, 2.2vw, 2.25rem); line-height: 1.5; }

.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; padding: 0 24px; border-radius: 100px; text-decoration: none; font-size: .78rem; font-weight: 700; letter-spacing: .04em; transition: transform .25s ease, background-color .25s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: white; background: var(--navy); }
.section-dark .button-primary { color: var(--navy-deep); background: var(--ivory); }
.text-link { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; border-bottom: 1px solid var(--line); padding: 13px 2px 9px; font-size: .8rem; font-weight: 700; }

.hero { min-height: 100svh; padding-top: clamp(130px, 17vh, 190px); padding-bottom: 86px; display: flex; align-items: center; background: linear-gradient(115deg, var(--paper) 0 65%, var(--warm) 65%); }
.hero-grid { width: 100%; display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(350px, .82fr); align-items: center; gap: clamp(40px, 7vw, 120px); }
.hero-copy { max-width: 850px; margin: 0; }
.hero-copy h1 { max-width: 850px; margin-bottom: 38px; }
.hero-lede { max-width: 680px; color: var(--ink-soft); font-size: clamp(1.08rem, 1.55vw, 1.34rem); line-height: 1.72; }
.hero-actions { display: flex; gap: 28px; align-items: center; margin-top: 42px; }
.hero-visual { position: relative; width: min(100%, 520px); aspect-ratio: .9; justify-self: end; margin: 0; }
.orbit { position: absolute; border: 1px solid color-mix(in oklch, var(--navy) 22%, transparent); border-radius: 50%; }
.orbit-one { inset: 9%; }
.orbit-two { inset: 23%; border-style: dashed; transform: rotate(-18deg); }
.hero-visual::before, .hero-visual::after { content: ""; position: absolute; border-radius: 50%; }
.hero-visual::before { width: 15px; height: 15px; background: var(--coral); left: 13%; top: 39%; box-shadow: 0 0 0 10px color-mix(in oklch, var(--coral) 10%, transparent); }
.hero-visual::after { width: 10px; height: 10px; background: var(--mint); right: 20%; bottom: 24%; }
.bridge-mark { position: absolute; inset: 36%; border-radius: 50%; background: var(--paper); display: grid; place-items: center; box-shadow: 0 22px 80px color-mix(in oklch, var(--navy) 16%, transparent); }
.bridge-mark img { width: 72%; height: 72%; object-fit: contain; }
.hero-signal { position: absolute; display: flex; flex-direction: column; padding: 20px 22px; min-width: 160px; background: color-mix(in oklch, var(--paper) 92%, transparent); border: 1px solid color-mix(in oklch, var(--navy) 10%, transparent); box-shadow: 0 18px 50px color-mix(in oklch, var(--navy) 9%, transparent); }
.hero-signal strong { font: 400 clamp(1.8rem, 3vw, 3.2rem)/1 var(--sans); letter-spacing: -.06em; }
.hero-signal strong span { color: var(--coral); }
.hero-signal small { margin-top: 8px; color: var(--muted); font-size: .7rem; }
.signal-revenue { top: 5%; right: 1%; }
.signal-market { bottom: 7%; left: 0; }
.hero-caption { position: absolute; bottom: -10px; right: 0; color: var(--muted); font-size: .65rem; letter-spacing: .1em; }
.scroll-cue { position: absolute; left: 50%; bottom: 28px; width: 1px; height: 44px; background: var(--line); overflow: hidden; }
.scroll-cue span { display: block; width: 100%; height: 45%; background: var(--ink); animation: scroll 2s infinite ease-in-out; }
@keyframes scroll { 0% { transform: translateY(-100%); } 60%, 100% { transform: translateY(240%); } }

.proof { overflow: hidden; }
.proof::after { content: ""; position: absolute; width: 620px; height: 620px; right: -280px; top: -300px; border: 1px solid color-mix(in oklch, var(--ivory) 12%, transparent); border-radius: 50%; }
.metric-grid { margin-top: clamp(70px, 9vw, 120px); display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid color-mix(in oklch, var(--ivory) 18%, transparent); }
.metric { position: relative; padding: 46px 40px 0 0; min-height: 310px; border-right: 1px solid color-mix(in oklch, var(--ivory) 18%, transparent); }
.metric:not(:first-child) { padding-left: 40px; }
.metric:last-child { border-right: 0; }
.metric-index { color: color-mix(in oklch, var(--ivory) 44%, transparent); font-size: .68rem; letter-spacing: .14em; }
.metric strong { display: block; margin: 55px 0 18px; color: var(--gold); font-size: clamp(3.2rem, 6vw, 6rem); font-weight: 400; line-height: .9; letter-spacing: -.07em; }
.metric h3 { margin-bottom: 12px; font-size: 1rem; }
.metric p { max-width: 320px; color: color-mix(in oklch, var(--ivory) 61%, transparent); font-family: system-ui, sans-serif; font-size: .82rem; line-height: 1.65; }

.thesis-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: clamp(50px, 10vw, 150px); }
.thesis-body { padding-top: 72px; }
.thesis-body > p:not(.lead) { max-width: 650px; color: var(--ink-soft); font-family: system-ui, sans-serif; line-height: 1.85; }
.thesis-equation { margin-top: 70px; display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.thesis-equation span { padding: 11px 16px; border: 1px solid var(--line); border-radius: 100px; font-size: .78rem; }
.thesis-equation b { color: var(--coral); font-weight: 400; }
.thesis-equation .equation-result { color: white; background: var(--navy); border-color: var(--navy); }

.journey-layout { margin-top: 88px; display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(50px, 8vw, 110px); align-items: end; }
.stage { display: grid; grid-template-columns: 46px 1fr; gap: 18px; padding: 26px 0; border-top: 1px solid var(--line); }
.stage > span { color: var(--coral); font-size: .72rem; }
.stage-date { margin-bottom: 8px; color: var(--muted); font-size: .65rem; letter-spacing: .08em; }
.stage h3 { margin-bottom: 8px; font-family: var(--serif); font-size: 1.3rem; }
.stage div > p:last-child { margin-bottom: 0; color: var(--ink-soft); font-family: system-ui, sans-serif; font-size: .84rem; line-height: 1.65; }
.chart-panel { padding: clamp(25px, 4vw, 50px); background: var(--paper); box-shadow: 0 35px 80px color-mix(in oklch, var(--navy) 10%, transparent); }
.chart-head { display: flex; justify-content: space-between; align-items: end; gap: 20px; }
.chart-kicker { margin-bottom: 7px; color: var(--muted); font-size: .62rem; letter-spacing: .14em; }
.chart-head h3 { margin-bottom: 0; font-family: var(--serif); font-size: 1.75rem; }
.legend { display: flex; gap: 16px; color: var(--muted); font-size: .66rem; }
.legend span { display: flex; align-items: center; gap: 6px; }
.legend i { width: 9px; height: 9px; border-radius: 50%; }
.legend-revenue { background: var(--navy); }
.legend-spend { background: var(--coral); }
.economics-chart { min-height: 330px; margin-top: 28px; }
.economics-chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart-note { margin: 18px 0 0; color: var(--muted); font: .68rem/1.5 system-ui, sans-serif; }

.product-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(60px, 11vw, 160px); align-items: center; }
.value-layers { margin: 65px 0 0; padding: 0; list-style: none; }
.value-layers li { display: grid; grid-template-columns: 45px 1fr; gap: 12px; padding: 22px 0; border-top: 1px solid var(--line); }
.value-layers li > span { color: var(--coral); font-size: .65rem; }
.value-layers h3 { margin-bottom: 7px; font-size: .95rem; }
.value-layers p { margin-bottom: 0; color: var(--ink-soft); font-family: system-ui, sans-serif; font-size: .82rem; }
.value-architecture { position: relative; min-height: 630px; display: flex; flex-direction: column; justify-content: center; padding: clamp(28px, 5vw, 72px); background: var(--warm); }
.value-architecture::before { content: ""; position: absolute; width: 360px; height: 360px; right: -90px; top: -100px; border: 1px solid color-mix(in oklch, var(--coral) 25%, transparent); border-radius: 50%; }
.architecture-line { position: relative; z-index: 1; display: grid; grid-template-columns: 110px 1fr; align-items: baseline; gap: 24px; padding: 28px 0; border-top: 1px solid var(--line); }
.architecture-line > span { color: var(--coral); font: .65rem var(--display); letter-spacing: .15em; }
.architecture-line strong { font-family: var(--serif); font-size: clamp(1.5rem, 2.4vw, 2.45rem); font-weight: 500; }
.architecture-line small { grid-column: 2; margin-top: -16px; color: var(--muted); font-size: .72rem; }
.architecture-relationship { color: var(--ivory); margin: 0 -32px; padding-left: 32px; padding-right: 32px; background: var(--navy); border-color: var(--navy); }
.architecture-relationship small { color: color-mix(in oklch, var(--ivory) 62%, transparent); }
.architecture-arrow { position: relative; z-index: 1; width: 1px; height: 30px; margin-left: 34px; color: var(--coral); }

.retention-grid { display: grid; grid-template-columns: .92fr 1.08fr; gap: clamp(55px, 9vw, 130px); align-items: center; }
.retention-viz { padding: clamp(26px, 4vw, 50px); border: 1px solid color-mix(in oklch, var(--ivory) 15%, transparent); }
.retention-head { display: flex; justify-content: space-between; gap: 20px; padding-bottom: 28px; border-bottom: 1px solid color-mix(in oklch, var(--ivory) 14%, transparent); }
.retention-head span { font-family: var(--serif); font-size: 1.35rem; }
.retention-head small { color: color-mix(in oklch, var(--ivory) 48%, transparent); font-size: .65rem; }
#retention-chart { min-height: 290px; padding: 35px 0 20px; }
#retention-chart svg { width: 100%; height: auto; display: block; overflow: visible; }
.retention-callout { display: grid; grid-template-columns: auto 1fr; gap: 25px; align-items: baseline; padding-top: 26px; border-top: 1px solid color-mix(in oklch, var(--ivory) 14%, transparent); }
.retention-callout div { display: flex; align-items: baseline; gap: 10px; }
.retention-callout strong { color: var(--gold); font-size: 2.1rem; font-weight: 400; letter-spacing: -.05em; }
.retention-callout span { color: color-mix(in oklch, var(--ivory) 60%, transparent); font-size: .7rem; }
.retention-callout p { margin: 0; color: color-mix(in oklch, var(--ivory) 42%, transparent); font-size: .62rem; }

.referral-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(50px, 10vw, 150px); align-items: center; }
.ring-group { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.ring-stat { position: relative; aspect-ratio: 1; border-radius: 50%; display: grid; place-items: center; background: conic-gradient(var(--navy) calc(var(--p) * 1%), var(--warm) 0); }
.ring-stat::after { content: ""; position: absolute; inset: 11px; border-radius: inherit; background: var(--paper); }
.ring-stat.coral { background: conic-gradient(var(--coral) calc(var(--p) * 1%), var(--warm) 0); }
.ring-stat > div { position: relative; z-index: 1; text-align: center; display: flex; flex-direction: column; }
.ring-stat strong { font-size: clamp(2.4rem, 4vw, 4.5rem); font-weight: 400; letter-spacing: -.07em; }
.ring-stat span { max-width: 130px; color: var(--muted); font-size: .72rem; }
.ring-note { grid-column: 1/-1; margin: 10px 0 0; color: var(--muted); font: .67rem/1.6 system-ui, sans-serif; text-align: center; }

.platform .section-intro { max-width: 920px; }
.platform-map { margin-top: 90px; display: grid; grid-template-columns: 1fr .7fr 1fr; align-items: stretch; }
.platform-inputs, .platform-outputs { display: flex; flex-direction: column; justify-content: center; }
.platform-inputs div, .platform-outputs div { min-height: 86px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); }
.platform-inputs span, .platform-outputs span { color: var(--coral); font-size: .65rem; }
.platform-inputs b, .platform-outputs b { font-family: var(--serif); font-size: 1rem; font-weight: 500; }
.platform-core { position: relative; aspect-ratio: 1; margin: 0 30px; border-radius: 50%; display: grid; place-items: center; align-content: center; text-align: center; background: var(--navy); color: white; }
.platform-core img { width: 80px; margin-bottom: 16px; }
.platform-core strong { font-size: .72rem; line-height: 1.5; letter-spacing: .15em; }
.core-pulse { position: absolute; inset: -18px; border: 1px dashed var(--coral); border-radius: 50%; animation: spin 20s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.platform-note { max-width: 680px; margin: 65px auto 0; color: var(--ink-soft); font: .8rem/1.8 system-ui, sans-serif; text-align: center; }

.global { overflow: hidden; }
.global-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(50px, 9vw, 130px); align-items: center; }
.global-copy h2 { margin-bottom: 38px; }
.global-copy .lead { max-width: 620px; }
.translation-table { margin-top: 60px; }
.translation-table div { display: grid; grid-template-columns: 120px 1fr; gap: 30px; padding: 18px 0; border-top: 1px solid var(--line); }
.translation-table span { color: var(--muted); font-size: .68rem; }
.translation-table b { font-family: var(--serif); font-weight: 500; }
.global-bridge { position: relative; min-height: 690px; display: flex; flex-direction: column; justify-content: center; gap: 22px; padding: clamp(28px, 5vw, 70px); background: var(--warm); overflow: hidden; }
.bridge-brand { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr auto; align-items: baseline; padding: 25px 0; border-top: 1px solid var(--line); }
.bridge-brand > span { grid-column: 1/-1; margin-bottom: 14px; color: var(--coral); font: .62rem var(--display); letter-spacing: .17em; }
.bridge-brand strong { font-family: var(--serif); font-size: clamp(2rem, 4vw, 4.5rem); font-weight: 500; line-height: 1; }
.bridge-brand small { color: var(--muted); font-size: .72rem; }
.bridge-engine { position: relative; z-index: 1; width: 190px; aspect-ratio: 1; align-self: center; display: grid; place-items: center; align-content: center; color: white; background: var(--navy); border-radius: 50%; }
.bridge-engine img { width: 66px; margin-bottom: 12px; }
.bridge-engine span { font: .56rem/1.4 var(--display); letter-spacing: .12em; text-align: center; }
.bridge-orbit { position: absolute; inset: -16px; border: 1px dashed var(--coral); border-radius: 50%; animation: spin 20s linear infinite; }
.bridge-dao { text-align: right; }

.roadmap-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: clamp(50px, 9vw, 130px); }
.roadmap-list article { position: relative; padding: 30px 0 30px 100px; border-top: 1px solid color-mix(in oklch, var(--ivory) 15%, transparent); }
.roadmap-list article > span { position: absolute; left: 0; top: 28px; color: var(--gold); font-size: 1.25rem; }
.roadmap-list small { position: absolute; left: 58px; top: 35px; color: color-mix(in oklch, var(--ivory) 40%, transparent); font-size: .6rem; }
.roadmap-list h3 { margin-bottom: 9px; font-family: var(--serif); font-size: 1.4rem; }
.roadmap-list p { margin: 0; color: color-mix(in oklch, var(--ivory) 61%, transparent); font: .82rem/1.7 system-ui, sans-serif; }

.closing { min-height: 92svh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; background: var(--ivory); }
.closing-mark { width: 78px; margin-bottom: 40px; }
.closing-mark img { width: 100%; }
.closing h2 { max-width: 970px; }
.closing-lede { max-width: 680px; margin: 0 auto 38px; color: var(--ink-soft); font-size: 1rem; line-height: 1.8; }

footer { padding: 50px clamp(22px, 5vw, 76px); display: grid; grid-template-columns: .7fr 1.3fr auto; gap: 60px; align-items: start; color: color-mix(in oklch, var(--ivory) 65%, transparent); background: var(--navy-deep); font: .66rem/1.7 system-ui, sans-serif; }
footer > div:first-child { display: flex; flex-direction: column; gap: 7px; }
footer strong { color: var(--ivory); font-family: var(--sans); letter-spacing: .12em; }
footer p { margin-bottom: 7px; }
.methodology p:first-child { color: var(--ivory); font-weight: 700; }

.reveal { opacity: 1; transform: none; }
.reveal.is-visible { animation: reveal-in .7s both ease; }
@keyframes reveal-in {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
  .edition { display: none; }
  .hero { background: linear-gradient(160deg, var(--paper) 0 69%, var(--warm) 69%); }
  .hero-grid, .thesis-grid, .journey-layout, .product-grid, .retention-grid, .referral-grid, .global-grid, .roadmap-grid { grid-template-columns: 1fr; }
  .hero-visual { width: min(100%, 470px); justify-self: center; margin-top: 30px; }
  .metric-grid { grid-template-columns: 1fr; }
  .metric { min-height: auto; padding: 30px 0 38px !important; border-right: 0; border-bottom: 1px solid color-mix(in oklch, var(--ivory) 18%, transparent); }
  .metric strong { margin-top: 30px; }
  .thesis-body { padding-top: 0; }
  .value-architecture { min-height: 600px; }
  .platform-map { grid-template-columns: 1fr; gap: 45px; }
  .platform-core { width: min(280px, 72vw); margin: auto; }
  .platform-inputs, .platform-outputs { max-width: 600px; width: 100%; margin: auto; }
  .global-bridge { min-height: 650px; }
  footer { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 580px) {
  .topbar { height: 64px; padding: 0 18px; }
  .brand-lockup { font-size: .62rem; gap: 8px; }
  .brand-lockup img { width: 24px; height: 24px; }
  .section { padding: 96px 20px; }
  .hero { padding-top: 110px; }
  .hero-actions { flex-direction: column; align-items: flex-start; gap: 14px; }
  .hero-visual { aspect-ratio: .82; }
  .hero-signal { min-width: 130px; padding: 15px; }
  .signal-revenue { top: 6%; }
  .signal-market { bottom: 10%; }
  .hero-caption { display: none; }
  .metric-grid { margin-top: 55px; }
  .section-number { margin-bottom: 55px; }
  .chart-head { align-items: flex-start; flex-direction: column; }
  .economics-chart { min-height: 250px; }
  .value-architecture { min-height: 560px; padding: 28px 22px; }
  .architecture-line { grid-template-columns: 86px 1fr; gap: 12px; }
  .architecture-relationship { margin-left: -10px; margin-right: -10px; padding-left: 10px; padding-right: 10px; }
  .retention-viz { padding: 22px 16px; }
  .retention-head { flex-direction: column; }
  .retention-callout { grid-template-columns: 1fr; }
  .retention-callout p { grid-column: auto; }
  .ring-group { grid-template-columns: 1fr; max-width: 330px; margin: auto; }
  .translation-table div { grid-template-columns: 90px 1fr; gap: 15px; }
  .global-bridge { min-height: 580px; padding: 28px 22px; }
  .roadmap-list article { padding-left: 88px; }
}

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