:root {
  --paper: #f7f6f2;
  --white: #fff;
  --ink: #0c1424;
  --muted: #657083;
  --line: rgba(12, 20, 36, 0.12);
  --blue: #3159f5;
  --navy: #101726;
  --radius: 24px;
  --max: 1440px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 100; padding: 10px 14px; background: var(--ink); color: white; border-radius: 8px; }
.skip-link:focus { top: 16px; }
.site-header { position: absolute; top: 20px; left: 50%; z-index: 20; display: flex; width: min(calc(100% - 40px), calc(var(--max) - 96px)); transform: translateX(-50%); align-items: center; justify-content: space-between; padding: 12px 20px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.78); backdrop-filter: blur(16px); }
.wordmark { font-size: 13px; font-weight: 760; letter-spacing: -.01em; }
.desktop-nav { display: flex; gap: 28px; font-size: 14px; color: var(--muted); }
.desktop-nav a:hover { color: var(--ink); }
.header-cta { padding: 9px 14px; border-radius: 999px; background: var(--ink); color: white; font-size: 12px; font-weight: 650; }
.hero { display: grid; width: min(100% - 40px, var(--max)); min-height: 100svh; margin: 0 auto; padding: 130px 48px 70px; grid-template-columns: 1.08fr .92fr; gap: clamp(48px, 7vw, 104px); align-items: center; }
.eyebrow { display: flex; align-items: center; gap: 9px; margin: 0 0 26px; color: var(--muted); font-size: 11px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
.eyebrow span { width: 7px; height: 7px; border-radius: 50%; background: var(--blue); }
h1 { max-width: 820px; margin: 0; font-size: clamp(3.6rem, 7vw, 7.35rem); font-weight: 560; line-height: .92; letter-spacing: -.067em; }
h1 em { color: var(--blue); font-style: normal; }
.hero-intro { max-width: 690px; margin: 30px 0 0; color: var(--muted); font-size: clamp(1rem, 1.5vw, 1.18rem); line-height: 1.75; }
.hero-meta { margin: 18px 0 0; font-size: 13px; font-weight: 650; }
.hero-meta span { margin: 0 6px; color: var(--blue); }
.button-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.button { display: inline-flex; align-items: center; gap: 12px; padding: 14px 22px; border: 1px solid var(--line); border-radius: 999px; font-size: 14px; font-weight: 650; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--ink); color: white; }
.button-secondary { background: white; }
.portrait-card { position: relative; padding: 24px; overflow: hidden; border: 1px solid rgba(255,255,255,.1); border-radius: 28px; background: var(--navy); color: white; box-shadow: 0 28px 80px rgba(17,24,39,.16); }
.portrait-card::before { content: ""; position: absolute; inset: 10px -12px -12px 10px; z-index: -1; border: 1px solid rgba(49,89,245,.2); border-radius: 32px; transform: rotate(2deg); }
.portrait-top { display: flex; justify-content: space-between; color: rgba(255,255,255,.48); font: 10px/1.4 ui-monospace, SFMono-Regular, monospace; letter-spacing: .14em; text-transform: uppercase; }
.portrait-frame { position: relative; display: grid; aspect-ratio: 4 / 4.25; margin: 28px 0; overflow: hidden; place-items: end center; border-radius: 18px; background: var(--blue); }
.portrait-frame::after { content: ""; position: absolute; inset: 45% 0 0; background: rgba(12,20,36,.48); border-radius: 50% 50% 0 0 / 24% 24% 0 0; }
.portrait-initials { z-index: 1; padding-bottom: 4px; color: rgba(255,255,255,.92); font-size: clamp(8rem, 21vw, 16rem); font-weight: 570; line-height: .76; letter-spacing: -.1em; }
.portrait-frame img { position: absolute; inset: 0; z-index: 2; width: 100%; height: 100%; object-fit: cover; }
.portrait-bottom { display: flex; align-items: end; justify-content: space-between; gap: 18px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.15); }
.portrait-bottom strong, .portrait-bottom span { display: block; }
.portrait-bottom strong { font-size: 19px; }
.portrait-bottom span { margin-top: 5px; color: rgba(255,255,255,.52); font-size: 12px; }
.portrait-bottom small { padding: 6px 10px; border: 1px solid rgba(255,255,255,.18); border-radius: 999px; color: rgba(255,255,255,.68); }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.section { padding: 128px 0; }
.container { width: min(calc(100% - 96px), var(--max)); margin: 0 auto; }
.section-heading { max-width: 880px; }
.section-heading h2, .baijiu-section h2 { margin: 0; font-size: clamp(2.8rem, 5.5vw, 5.8rem); font-weight: 560; line-height: .98; letter-spacing: -.058em; }
.section-heading h2 em { color: #9ba2ad; font-style: normal; }
.section-heading > p:last-child, .section-subtitle { max-width: 690px; margin: 24px 0 0; color: var(--muted); font-size: 17px; line-height: 1.7; }
.micro { color: #8b95a5; font: 700 10px/1.4 ui-monospace, SFMono-Regular, monospace; letter-spacing: .14em; }
.lead { max-width: 790px; margin: 38px 0 0; color: #4e5a6b; font-size: 18px; line-height: 1.75; }
.status { display: inline-flex; width: fit-content; padding: 9px 13px; border: 1px solid; border-radius: 999px; font-size: 10px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.status-blue { border-color: rgba(49,89,245,.25); background: white; color: var(--blue); }
.status-amber { margin-top: 28px; border-color: rgba(151,91,22,.2); background: #fff9ed; color: #855116; }

.metrics-section { padding: 94px 0; border-block: 1px solid var(--line); background: white; }
.metrics-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); }
.metric { min-height: 250px; padding: 36px; border-left: 1px solid var(--line); }
.metric:first-child { padding-left: 0; border-left: 0; }
.metric strong { display: block; font-size: clamp(4.5rem, 8vw, 8rem); font-weight: 560; line-height: .9; letter-spacing: -.07em; }
.metric p { max-width: 280px; margin: 28px 0 0; color: var(--muted); font-size: 14px; line-height: 1.65; }
.manifesto { max-width: 1020px; margin: 42px 0 0; color: #354052; font-size: clamp(1.25rem, 2.2vw, 1.75rem); line-height: 1.45; letter-spacing: -.025em; }

.timeline { margin-top: 70px; border-top: 1px solid var(--line); }
.timeline-item { display: grid; grid-template-columns: 200px 320px 1fr; gap: 36px; padding: 38px 0; border-bottom: 1px solid var(--line); }
.timeline-item time { color: var(--blue); font: 650 11px/1.6 ui-monospace, SFMono-Regular, monospace; letter-spacing: .06em; }
.timeline-item h3 { position: relative; margin: 0; padding-left: 26px; font-size: 20px; font-weight: 650; letter-spacing: -.025em; }
.timeline-item h3::before { content: ""; position: absolute; top: 7px; left: 0; width: 7px; height: 7px; border: 1px solid var(--blue); border-radius: 50%; transition: background .2s ease; }
.timeline-item:hover h3::before { background: var(--blue); }
.timeline-item p { max-width: 720px; margin: 0; color: var(--muted); font-size: 15px; line-height: 1.75; }

.venture-section { background: var(--navy); color: white; }
.venture-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 72px; align-items: start; }
.eyebrow-light { color: rgba(255,255,255,.52); }
.eyebrow-light span { background: #8ea2ff; }
.venture-identity .micro { color: #8ea2ff; }
.venture-identity h2 { margin: 22px 0 0; font-size: clamp(5rem, 10vw, 10rem); font-weight: 560; line-height: .9; letter-spacing: -.08em; }
.venture-metric { display: flex; width: fit-content; align-items: end; gap: 14px; margin: 70px 0 0; padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,.15); }
.venture-metric strong { font-size: 50px; font-weight: 560; letter-spacing: -.05em; }
.venture-metric span { padding-bottom: 7px; color: rgba(255,255,255,.5); font-size: 13px; }
.venture-card { padding: 46px; border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); background: rgba(255,255,255,.035); }
.venture-card h3 { max-width: 690px; margin: 0; font-size: clamp(2rem, 3.2vw, 3.25rem); font-weight: 540; line-height: 1.12; letter-spacing: -.045em; }
.venture-card > p { margin: 26px 0 0; color: rgba(255,255,255,.58); font-size: 16px; line-height: 1.8; }
.tag-group { margin-top: 30px; }
.tag-label { display: block; margin-bottom: 11px; color: rgba(255,255,255,.38); font-size: 9px; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.tags { display: flex; flex-wrap: wrap; gap: 7px; }
.tags span { padding: 7px 11px; border: 1px solid rgba(255,255,255,.14); border-radius: 999px; color: rgba(255,255,255,.72); font-size: 11px; }
.button-light { margin-top: 38px; background: white; color: var(--ink); }

.problem-section { background: white; }
.comparison { display: grid; grid-template-columns: 1fr 1fr; margin-top: 70px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); }
.comparison article { padding: 36px; background: var(--paper); }
.comparison article + article { border-left: 1px solid var(--line); }
.comparison .comparison-accent { background: #f3f5ff; }
.comparison-accent .micro { color: var(--blue); }
.comparison h3 { margin: 13px 0 24px; font-size: 25px; letter-spacing: -.035em; }
.dash-list, .arrow-list { margin: 0; padding: 0; list-style: none; }
.dash-list li, .arrow-list li { position: relative; padding: 14px 0 14px 28px; border-top: 1px solid var(--line); color: #475366; font-size: 14px; line-height: 1.55; }
.dash-list li:first-child, .arrow-list li:first-child { border-top: 0; }
.dash-list li::before { content: "—"; position: absolute; left: 0; color: #9da4ae; }
.arrow-list li::before { content: "→"; position: absolute; left: 0; color: var(--blue); }
.problem-statement { margin: 48px 0 0; padding: 6px 0 6px 26px; border-left: 2px solid var(--blue); font-size: clamp(1.7rem, 3.3vw, 3.35rem); font-weight: 530; line-height: 1.18; letter-spacing: -.045em; }
.problem-statement strong { font-weight: inherit; color: var(--blue); }

.intelligence-section { background: #eef1ff; }
.heading-row { display: flex; align-items: end; justify-content: space-between; gap: 32px; }
.flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr auto 1fr; gap: 8px; align-items: center; margin-top: 56px; }
.flow > div { display: flex; min-height: 132px; flex-direction: column; justify-content: space-between; padding: 19px; border: 1px solid rgba(49,89,245,.16); border-radius: 16px; background: white; box-shadow: 0 14px 34px rgba(49,89,245,.05); }
.flow small, .dimensions small, .principle small { color: var(--blue); font: 650 10px ui-monospace, SFMono-Regular, monospace; }
.flow strong { max-width: 130px; font-size: 14px; line-height: 1.3; }
.flow > span { color: var(--blue); }
.dimensions { display: grid; grid-template-columns: repeat(5, 1fr); margin: 68px 0 38px; border-top: 1px solid rgba(49,89,245,.17); }
.dimensions article { min-height: 200px; padding: 28px 20px; border-right: 1px solid rgba(49,89,245,.17); }
.dimensions article:first-child { padding-left: 0; }
.dimensions article:last-child { border-right: 0; }
.dimensions h3 { margin: 28px 0 10px; font-size: 18px; letter-spacing: -.025em; }
.dimensions p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }

.baijiu-grid { display: grid; grid-template-columns: .92fr 1.08fr; gap: 80px; }
.challenge { max-width: 690px; margin: 34px 0 0; padding: 21px; border: 1px solid var(--line); border-radius: 14px; background: white; color: var(--muted); line-height: 1.7; }
.challenge small, .core-question small { display: block; margin-bottom: 10px; color: var(--blue); font: 700 9px ui-monospace, SFMono-Regular, monospace; letter-spacing: .14em; }
.core-question { margin: 22px 0 0; padding: 6px 0 6px 24px; border-left: 2px solid var(--blue); font-size: 19px; font-weight: 600; line-height: 1.55; letter-spacing: -.02em; }
.model-card { padding: 34px; border: 1px solid var(--line); border-radius: var(--radius); background: white; }
.card-heading, .experiment-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; }
.card-heading h3, .experiment-heading h3 { margin: 0; font-size: 24px; letter-spacing: -.035em; }
.card-heading span { color: #8b95a5; font: 650 9px ui-monospace, SFMono-Regular, monospace; letter-spacing: .14em; }
.vertical-flow { display: grid; gap: 3px; margin-top: 28px; text-align: center; }
.vertical-flow div { padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); font-size: 14px; font-weight: 650; }
.vertical-flow span { z-index: 1; height: 12px; color: var(--blue); line-height: 12px; }
.experiment-card { margin-top: 74px; padding: 38px; border-radius: var(--radius); background: var(--navy); color: white; }
.experiment-heading > p { max-width: 440px; margin: 0; color: rgba(255,255,255,.5); font-size: 13px; line-height: 1.6; }
.experiment-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin: 32px 0 0; padding: 1px; overflow: hidden; border-radius: 12px; background: rgba(255,255,255,.1); list-style: none; }
.experiment-grid li { display: flex; min-height: 105px; flex-direction: column; justify-content: space-between; padding: 18px; background: #151d2e; color: rgba(255,255,255,.78); font-size: 13px; }
.experiment-grid small { color: #8ea2ff; font: 600 9px ui-monospace, SFMono-Regular, monospace; }

.principles-section { border-top: 1px solid var(--line); background: white; }
.principles-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 62px; }
.principle { display: flex; min-height: 280px; flex-direction: column; padding: 34px; border: 1px solid var(--line); border-radius: 20px; background: var(--paper); transition: transform .22s ease, box-shadow .22s ease; }
.principle:hover { transform: translateY(-4px); box-shadow: 0 20px 60px rgba(17,24,39,.07); }
.principle h3 { max-width: 560px; margin: auto 0 14px; font-size: clamp(1.5rem, 2.8vw, 2.15rem); line-height: 1.15; letter-spacing: -.04em; }
.principle p { margin: 0; color: var(--muted); line-height: 1.65; }

.experience-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 62px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--line); }
.experience { display: flex; min-height: 270px; flex-direction: column; justify-content: space-between; padding: 34px; background: white; }
.experience small { color: var(--blue); font: 650 10px ui-monospace, SFMono-Regular, monospace; }
.experience h3 { margin: 0; font-size: 30px; letter-spacing: -.04em; }
.experience p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }

.footer { padding: 58px 0 30px; background: var(--navy); color: white; }
.contact-card { padding: 52px; border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); background: rgba(255,255,255,.035); }
.contact-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 50px; align-items: end; }
.contact-grid h2 { margin: 0; font-size: clamp(4rem, 8vw, 8.8rem); font-weight: 550; line-height: .9; letter-spacing: -.075em; }
.contact-grid h2 em { color: #8ea2ff; font-style: normal; }
.email-link { display: inline-block; max-width: 100%; margin-top: 36px; padding-bottom: 4px; border-bottom: 1px solid rgba(255,255,255,.25); color: rgba(255,255,255,.72); font-size: 17px; overflow-wrap: anywhere; }
.contact-details { text-align: right; }
.contact-details h3 { margin: 0; font-size: 25px; }
.contact-details > p { color: rgba(255,255,255,.5); }
.contact-details nav { display: flex; flex-wrap: wrap; justify-content: end; gap: 8px; margin-top: 30px; }
.contact-details nav a { padding: 9px 13px; border: 1px solid rgba(255,255,255,.14); border-radius: 999px; color: rgba(255,255,255,.72); font-size: 12px; }
.contact-details nav a:hover { background: rgba(255,255,255,.08); color: white; }
.footer-line { display: flex; justify-content: space-between; margin-top: 26px; color: rgba(255,255,255,.32); font-size: 9px; font-weight: 650; letter-spacing: .16em; text-transform: uppercase; }

.js .reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
.js .reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; padding-inline: 0; }
  .hero-copy { padding-top: 30px; }
  .portrait-card { max-width: 620px; }
  .timeline-item { grid-template-columns: 150px 260px 1fr; gap: 24px; }
  .venture-grid, .baijiu-grid { grid-template-columns: 1fr; }
  .venture-identity h2 { font-size: 7rem; }
  .flow { grid-template-columns: 1fr; }
  .flow > div { min-height: 95px; }
  .flow > span { transform: rotate(90deg); text-align: center; }
  .dimensions { grid-template-columns: repeat(2, 1fr); }
  .dimensions article { border-bottom: 1px solid rgba(49,89,245,.17); }
  .experiment-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .site-header { width: calc(100% - 24px); top: 12px; padding: 10px 12px 10px 16px; }
  .desktop-nav { display: none; }
  .hero { width: calc(100% - 32px); padding-top: 112px; }
  h1 { font-size: clamp(3.3rem, 15vw, 5rem); }
  .portrait-card { padding: 18px; }
  .section { padding: 88px 0; }
  .container { width: calc(100% - 32px); }
  .metrics-grid { grid-template-columns: 1fr; }
  .metric { min-height: auto; padding: 30px 0; border-top: 1px solid var(--line); border-left: 0; }
  .metric:first-child { border-top: 0; }
  .timeline-item { grid-template-columns: 1fr; gap: 14px; padding: 30px 0; }
  .timeline-item h3 { padding-left: 22px; }
  .venture-card, .model-card, .experiment-card, .contact-card { padding: 24px; }
  .venture-identity h2 { font-size: 5.5rem; }
  .comparison { grid-template-columns: 1fr; }
  .comparison article + article { border-top: 1px solid var(--line); border-left: 0; }
  .comparison article { padding: 25px; }
  .heading-row, .card-heading, .experiment-heading { align-items: start; flex-direction: column; }
  .dimensions { grid-template-columns: 1fr; }
  .dimensions article, .dimensions article:first-child { min-height: auto; padding: 24px 0; border-right: 0; }
  .experiment-grid, .principles-grid, .experience-grid, .contact-grid { grid-template-columns: 1fr; }
  .experiment-grid li { min-height: 95px; }
  .contact-details { text-align: left; }
  .contact-details nav { justify-content: start; }
  .footer-line { align-items: start; flex-direction: column; gap: 8px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition-duration: .01ms !important; } .js .reveal { opacity: 1; transform: none; } }