@import url("https://fonts.googleapis.com/css2?family=Inter:wght@500;700;800&family=Poppins:ital,wght@0,300;0,400;0,500;0,600;1,400&display=swap");

:root {
  --blue: #0037ff;
  --navy: #051e41;
  --white: #ffffff;
  --paper: #f7fafc;
  --cyan: #28ffff;
  --green: #05fab9;
  --pink: #fca9e6;
  --ink: #051e41;
  --muted: #53627a;
  --line: rgba(5, 30, 65, .16);
  --line-inverse: rgba(255, 255, 255, .25);
  --display: "Inter", sans-serif;
  --text: "Poppins", sans-serif;
  --data: "Inter", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--text); font-weight: 300; }
body, button, a { -webkit-font-smoothing: antialiased; }
a { color: inherit; }
button { color: inherit; font: inherit; }
img { display: block; max-width: 100%; }

.skip-link { position: fixed; z-index: 100; left: 12px; top: 12px; padding: 10px 14px; color: var(--white); background: var(--navy); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }

.site-header { position: sticky; z-index: 50; top: 0; display: grid; grid-template-columns: minmax(250px, 1fr) auto auto; align-items: center; gap: 28px; min-height: 72px; padding: 0 3.5vw; border-bottom: 1px solid transparent; background: rgba(247, 250, 252, .92); backdrop-filter: blur(18px); transition: border-color 180ms ease; }
.site-header.is-scrolled { border-color: var(--line); }
.brand { display: flex; align-items: center; gap: 12px; width: fit-content; text-decoration: none; }
.brand img { width: 104px; }
.brand > span { width: 1px; height: 18px; background: var(--line); }
.brand strong { font-size: 10px; font-weight: 500; letter-spacing: .02em; }
.main-nav { display: flex; gap: 22px; }
.main-nav a { position: relative; font-size: 10px; font-weight: 500; text-decoration: none; }
.main-nav a::after { position: absolute; right: 0; bottom: -7px; left: 0; height: 1px; background: var(--blue); content: ""; transform: scaleX(0); transform-origin: right; transition: transform 160ms ease; }
.main-nav a:hover::after, .main-nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.header-cta { padding: 11px 14px; color: var(--white); background: var(--blue); font-size: 10px; font-weight: 500; text-decoration: none; }

.hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(420px, .95fr); min-height: calc(100vh - 72px); border-bottom: 1px solid var(--line); }
.hero-copy { display: flex; flex-direction: column; justify-content: center; min-height: 650px; padding: clamp(72px, 10vw, 142px) 7vw 70px; border-right: 1px solid var(--line); }
.kicker { display: flex; justify-content: space-between; gap: 20px; margin: 0 0 52px; font: 500 9px var(--data); letter-spacing: .09em; text-transform: uppercase; }
.kicker span:last-child { color: var(--muted); text-align: right; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 790px; margin-bottom: 32px; font: 800 clamp(68px, 8.6vw, 144px)/.82 var(--display); letter-spacing: -.09em; }
h1 em { color: var(--blue); font-family: var(--text); font-weight: 400; letter-spacing: -.075em; }
.hero-lede { max-width: 670px; margin-bottom: 38px; font-size: clamp(17px, 1.45vw, 23px); line-height: 1.48; letter-spacing: -.025em; }
.hero-actions { display: flex; align-items: center; gap: 28px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 49px; padding: 0 18px; font-size: 11px; font-weight: 500; text-decoration: none; transition: filter 150ms ease, transform 100ms ease; }
.button:hover { filter: brightness(.93); }
.button:active { transform: scale(.97); }
.button-blue { color: var(--white); background: var(--blue); }
.button-light { color: var(--blue); background: var(--white); }
.text-link { padding-bottom: 5px; border-bottom: 1px solid var(--line); font-size: 11px; font-weight: 500; text-decoration: none; }

.value-orbit { position: relative; min-height: 650px; overflow: hidden; color: var(--white); background: radial-gradient(circle at 49% 49%, #1655ff 0, var(--blue) 38%, #06266a 100%); }
.orbit-grid { position: absolute; inset: 0; opacity: .24; background-image: linear-gradient(var(--line-inverse) 1px, transparent 1px), linear-gradient(90deg, var(--line-inverse) 1px, transparent 1px); background-size: 72px 72px; }
.orbit-line { position: absolute; top: 50%; left: 50%; border: 1px solid rgba(255, 255, 255, .46); border-radius: 50%; transform: translate(-50%, -50%) rotate(-24deg); }
.orbit-line-a { width: 76%; height: 38%; }
.orbit-line-b { width: 110%; height: 66%; border-style: dashed; opacity: .6; }
.orbit-core { position: absolute; top: 50%; left: 50%; display: grid; place-content: center; width: 190px; aspect-ratio: 1; padding: 24px; border: 1px solid rgba(255,255,255,.75); border-radius: 50%; text-align: center; transform: translate(-50%, -50%); }
.orbit-core::before { position: absolute; inset: 22px; border-radius: 50%; background: radial-gradient(circle at 32% 28%, var(--green), var(--blue) 58%, #001c84); content: ""; }
.orbit-core > * { position: relative; }
.orbit-core small, .orbit-node small { font: 500 8px var(--data); letter-spacing: .08em; text-transform: uppercase; }
.orbit-core strong { font-size: 26px; font-weight: 500; letter-spacing: -.05em; }
.orbit-core span { font-size: 10px; }
.orbit-node { position: absolute; width: 142px; padding: 15px; border: 1px solid var(--line-inverse); background: rgba(0, 27, 111, .55); backdrop-filter: blur(8px); }
.orbit-node span { display: block; margin-bottom: 22px; color: var(--cyan); font: 500 9px var(--data); }
.orbit-node strong, .orbit-node small { display: block; }
.orbit-node strong { margin-bottom: 4px; font-size: 14px; font-weight: 500; }
.orbit-node small { opacity: .66; }
.node-output { top: 16%; left: 10%; }
.node-judgment { top: 18%; right: 9%; }
.node-action { right: 13%; bottom: 14%; }
.orbit-note { position: absolute; right: 8%; bottom: 7%; left: 8%; margin: 0; padding-top: 13px; border-top: 1px solid var(--line-inverse); font-size: 11px; }

.hero-metrics { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); background: var(--white); }
.hero-metrics a { min-height: 180px; padding: 26px 3.5vw; border-right: 1px solid var(--line); text-decoration: none; transition: color 160ms ease, background 160ms ease; }
.hero-metrics a:last-child { border-right: 0; }
.hero-metrics a:hover { color: var(--white); background: var(--blue); }
.hero-metrics strong, .hero-metrics span, .hero-metrics small { display: block; }
.hero-metrics strong { margin-bottom: 22px; font: 800 clamp(34px, 3.6vw, 58px)/1 var(--display); letter-spacing: -.07em; }
.hero-metrics span { font-size: 12px; font-weight: 500; }
.hero-metrics small { margin-top: 6px; font-size: 9px; line-height: 1.4; opacity: .65; }
.hero-source-note { grid-column: 1 / -1; margin: 0; padding: 10px 3.5vw; border-top: 1px solid var(--line); font: 500 8px var(--data); letter-spacing: .04em; text-align: right; text-transform: uppercase; }

.thesis-section, .sectors-section, .contract-section, .sources-section, .theses-section { padding: 110px 7vw; }
.section-index { display: flex; gap: 16px; align-items: center; margin-bottom: 74px; font: 500 9px var(--data); letter-spacing: .08em; text-transform: uppercase; }
.section-index span:first-child { display: grid; place-items: center; width: 28px; height: 28px; border: 1px solid currentColor; }
.thesis-copy { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr); gap: 8vw; align-items: end; }
.eyebrow { margin-bottom: 18px; font: 500 9px var(--data); letter-spacing: .09em; text-transform: uppercase; }
.thesis-copy .eyebrow { grid-column: 1 / -1; }
h2 { margin-bottom: 0; font-size: clamp(42px, 5.4vw, 84px); font-weight: 400; line-height: .98; letter-spacing: -.07em; }
.section-lede { margin: 0; color: var(--muted); font-size: 15px; line-height: 1.7; }
.era-contrast { display: grid; grid-template-columns: 1fr 130px 1fr; margin-top: 84px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.era-contrast article { min-height: 330px; padding: 28px; }
.era-contrast article:first-child { border-left: 1px solid var(--line); }
.era-contrast article:last-child { border-right: 1px solid var(--line); }
.era-contrast article > span { font: 500 9px var(--data); letter-spacing: .08em; text-transform: uppercase; }
.era-contrast h3 { margin: 110px 0 16px; font-size: clamp(24px, 2.5vw, 40px); font-weight: 400; line-height: 1.05; letter-spacing: -.05em; }
.era-contrast p { max-width: 520px; margin-bottom: 0; font-size: 12px; line-height: 1.65; }
.era-active { color: var(--white); background: var(--blue); }
.contrast-arrow { position: relative; display: grid; place-items: center; border-right: 1px solid var(--line); border-left: 1px solid var(--line); }
.contrast-arrow i { position: absolute; width: 1px; height: 100%; background: var(--line); transform: rotate(20deg); }
.contrast-arrow b { z-index: 1; display: grid; place-items: center; width: 42px; height: 42px; color: var(--white); background: var(--navy); font-weight: 400; }
.thesis-turn { display: grid; grid-template-columns: 60px 1fr; gap: 28px; max-width: 950px; margin: 72px 0 0 auto; }
.thesis-turn > span { color: var(--blue); font: 500 52px/1 var(--display); }
.thesis-turn p { margin: 0; font-size: clamp(20px, 2.2vw, 34px); line-height: 1.35; letter-spacing: -.04em; }

.shift-section { padding: 110px 7vw; color: var(--white); background: var(--blue); }
.section-heading { display: grid; grid-template-columns: 160px minmax(0, 1fr) minmax(240px, .42fr); gap: 4vw; align-items: end; }
.section-heading .section-index { align-self: start; margin: 0; }
.heading-aside { margin: 0; font-size: 12px; line-height: 1.65; }
.shift-lab { margin-top: 80px; border: 1px solid var(--line-inverse); }
.shift-tabs { display: grid; grid-template-columns: repeat(4, 1fr); }
.shift-tabs button { min-height: 124px; padding: 18px; border: 0; border-right: 1px solid var(--line-inverse); border-bottom: 1px solid var(--line-inverse); color: var(--white); background: transparent; text-align: left; cursor: pointer; }
.shift-tabs button:last-child { border-right: 0; }
.shift-tabs button[aria-selected="true"] { color: var(--blue); background: var(--white); }
.shift-tabs span, .shift-tabs strong, .shift-tabs small { display: block; }
.shift-tabs span { margin-bottom: 30px; font: 500 9px var(--data); }
.shift-tabs strong { font-size: 16px; font-weight: 500; }
.shift-tabs small { margin-top: 4px; font-size: 8px; text-transform: uppercase; }
.shift-panel { position: relative; min-height: 465px; padding: 42px; background: #042a9e; }
.shift-panel::after { position: absolute; top: 42px; right: 42px; width: 13px; height: 13px; border-radius: 50%; background: var(--shift-accent, var(--cyan)); content: ""; }
.shift-cyan { --shift-accent: var(--cyan); }
.shift-green { --shift-accent: var(--green); }
.shift-pink { --shift-accent: var(--pink); }
.shift-white { --shift-accent: var(--white); }
.shift-question { display: grid; grid-template-columns: 160px minmax(0, 820px); gap: 3vw; }
.shift-question span, .shift-detail-grid span { font: 500 8px var(--data); letter-spacing: .08em; text-transform: uppercase; }
.shift-question h3 { margin: 0; font-size: clamp(30px, 4vw, 58px); font-weight: 400; line-height: 1.05; letter-spacing: -.055em; }
.shift-detail-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 72px; border-top: 1px solid var(--line-inverse); border-left: 1px solid var(--line-inverse); }
.shift-detail-grid > div { min-height: 185px; padding: 20px; border-right: 1px solid var(--line-inverse); border-bottom: 1px solid var(--line-inverse); }
.shift-detail-grid p { margin: 38px 0 0; font-size: 10px; line-height: 1.6; }
.shift-proof { color: var(--navy); background: var(--shift-accent); }
.value-equation { display: grid; grid-template-columns: 1fr 44px 1fr 44px 1fr 44px 1.25fr; align-items: stretch; margin-top: 42px; border: 1px solid var(--line-inverse); }
.value-equation > div { min-height: 116px; padding: 20px; }
.value-equation span, .value-equation small { display: block; }
.value-equation span { margin-top: 32px; font-size: 15px; font-weight: 500; }
.value-equation small { margin-top: 4px; font-size: 8px; text-transform: uppercase; }
.value-equation b { display: grid; place-items: center; border-right: 1px solid var(--line-inverse); border-left: 1px solid var(--line-inverse); font-weight: 300; }
.value-equation .equation-result { color: var(--blue); background: var(--green); }

.sectors-section { background: var(--paper); }
.sector-explorer { display: grid; grid-template-columns: 230px 1fr; margin-top: 80px; border: 1px solid var(--line); background: var(--white); }
.sector-tabs { display: flex; flex-direction: column; border-right: 1px solid var(--line); }
.sector-tabs button { flex: 1; min-height: 58px; padding: 12px 16px; border: 0; border-bottom: 1px solid var(--line); background: transparent; font-size: 10px; text-align: left; cursor: pointer; }
.sector-tabs button:last-child { border-bottom: 0; }
.sector-tabs button span { display: inline-block; width: 34px; color: var(--muted); font: 500 8px var(--data); }
.sector-tabs button[aria-selected="true"] { color: var(--white); background: var(--navy); }
.sector-tabs button[aria-selected="true"] span { color: var(--cyan); }
.sector-panel { position: relative; min-height: 650px; padding: 46px; --sector-accent: var(--cyan); }
.sector-cyan { --sector-accent: var(--cyan); }
.sector-green { --sector-accent: var(--green); }
.sector-pink { --sector-accent: var(--pink); }
.sector-panel::after { position: absolute; top: 0; right: 0; width: 13px; height: 100%; background: var(--sector-accent); content: ""; }
.sector-title > span { font: 500 9px var(--data); letter-spacing: .08em; text-transform: uppercase; }
.sector-title h3 { max-width: 890px; margin: 18px 0 48px; font-size: clamp(34px, 4vw, 62px); font-weight: 400; line-height: 1.02; letter-spacing: -.06em; }
.sector-map { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.sector-map > div { min-height: 155px; padding: 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sector-map span, .sector-question span { font: 500 8px var(--data); letter-spacing: .08em; text-transform: uppercase; }
.sector-map p { margin: 28px 0 0; font-size: 10px; line-height: 1.6; }
.sector-question { display: grid; grid-template-columns: 150px 1fr; gap: 24px; margin: 34px 0 0; padding-top: 24px; border-top: 1px solid var(--line); font-size: clamp(17px, 1.8vw, 27px); line-height: 1.35; letter-spacing: -.035em; }
.noscript-card { margin-top: 30px; padding: 24px; border: 1px solid var(--line); }

.system-section { padding: 110px 7vw 0; color: var(--white); background: var(--navy); }
.system-intro { display: grid; grid-template-columns: 160px minmax(0, 1.1fr) minmax(260px, .5fr); gap: 4vw; align-items: end; }
.system-intro .section-index { align-self: start; margin: 0; }
.system-intro .eyebrow { grid-column: 2 / -1; margin-bottom: 0; }
.system-intro h2 { grid-column: 2; }
.system-intro > p:last-child { grid-column: 3; margin: 0; font-size: 12px; line-height: 1.65; }
.system-steps { margin: 90px 0 0; padding: 0; border-top: 1px solid var(--line-inverse); list-style: none; }
.system-steps li { display: grid; grid-template-columns: 100px 1fr 140px; gap: 32px; align-items: center; min-height: 160px; padding: 28px 0; border-bottom: 1px solid var(--line-inverse); }
.system-steps li > span { color: var(--green); font: 500 11px var(--data); }
.system-steps strong { display: block; margin-bottom: 9px; font-size: 25px; font-weight: 400; letter-spacing: -.04em; }
.system-steps p { max-width: 760px; margin: 0; font-size: 11px; line-height: 1.6; opacity: .74; }
.system-steps small { font: 500 8px var(--data); letter-spacing: .08em; text-align: right; text-transform: uppercase; }
.junior-question { display: grid; grid-template-columns: 1.25fr .75fr; gap: 7vw; margin: 100px -7vw 0; padding: 90px 7vw; color: var(--navy); background: var(--green); }
.junior-question h3 { max-width: 800px; margin: 0; font-size: clamp(36px, 4.2vw, 66px); font-weight: 400; line-height: 1.02; letter-spacing: -.065em; }
.junior-question > p { align-self: end; margin-bottom: 46px; font-size: 12px; line-height: 1.7; }
.junior-question a { grid-column: 2; width: fit-content; padding-bottom: 7px; border-bottom: 1px solid currentColor; font-size: 10px; font-weight: 500; text-decoration: none; }

.contract-section { background: var(--white); }
.contract-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 80px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.contract-grid article { display: flex; flex-direction: column; min-height: 320px; padding: 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.contract-grid article > span { margin-bottom: 52px; color: var(--blue); font: 500 9px var(--data); }
.contract-grid article > small { font: 500 8px var(--data); letter-spacing: .08em; text-transform: uppercase; }
.contract-grid strong { margin: 8px 0 26px; font-size: 14px; font-weight: 400; text-decoration: line-through; text-decoration-thickness: 1px; text-decoration-color: var(--pink); }
.contract-grid h3 { margin: 8px 0 14px; font-size: 25px; font-weight: 400; line-height: 1.1; letter-spacing: -.045em; }
.contract-grid p { margin: auto 0 0; font-size: 10px; line-height: 1.55; }
.contract-grid .contract-question { justify-content: space-between; color: var(--white); background: var(--blue); }
.contract-question p { margin: 0; font-size: clamp(22px, 2.4vw, 36px); line-height: 1.2; letter-spacing: -.05em; }

.principles-section { display: grid; grid-template-columns: .75fr 1.25fr; gap: 8vw; padding: 110px 7vw; color: var(--white); background: var(--blue); }
.principles-intro { position: sticky; top: 112px; align-self: start; }
.principles-intro h2 { font-size: clamp(40px, 4.4vw, 70px); }
.principles-list { margin: 0; padding: 0; border-top: 1px solid var(--line-inverse); list-style: none; }
.principles-list li { display: grid; grid-template-columns: 58px 1fr; gap: 22px; padding: 27px 0; border-bottom: 1px solid var(--line-inverse); }
.principles-list li > span { color: var(--cyan); font: 500 9px var(--data); }
.principles-list strong { display: block; margin-bottom: 8px; font-size: 22px; font-weight: 400; letter-spacing: -.04em; }
.principles-list p { margin: 0; font-size: 10px; line-height: 1.6; opacity: .74; }

.conversation-section { display: grid; grid-template-columns: 1.1fr .9fr; min-height: 620px; color: var(--white); background: radial-gradient(circle at 82% 42%, #1758ff 0, var(--blue) 37%, #06266a 100%); }
.conversation-copy { display: flex; flex-direction: column; justify-content: center; padding: 90px 7vw; }
.conversation-copy h2 { max-width: 780px; font-size: clamp(46px, 5.2vw, 82px); }
.conversation-copy > p:not(.eyebrow) { max-width: 650px; margin: 32px 0; font-size: 13px; line-height: 1.7; }
.conversation-copy .button { width: fit-content; }
.conversation-wave { position: relative; min-height: 500px; overflow: hidden; }
.conversation-wave span { position: absolute; z-index: 2; top: 50%; left: 50%; font: 800 clamp(50px, 7vw, 110px)/1 var(--display); letter-spacing: -.08em; transform: translate(-50%, -50%); }
.conversation-wave i { position: absolute; top: 50%; left: 50%; border: 1px solid rgba(255,255,255,.42); border-radius: 50%; transform: translate(-50%, -50%) rotate(-17deg); }
.wave-one { width: 36%; height: 17%; }
.wave-two { width: 74%; height: 38%; }
.wave-three { width: 118%; height: 62%; border-style: dashed !important; }
.conversation-wave b { position: absolute; width: 14px; height: 14px; border-radius: 50%; }
.planet-one { top: 29%; left: 19%; background: var(--cyan); }
.planet-two { right: 17%; bottom: 22%; background: var(--green); }
.planet-three { top: 17%; right: 28%; background: var(--pink); }

.sources-section { background: var(--paper); }
.source-list { margin-top: 78px; border-top: 1px solid var(--line); }
.source-link { display: grid; grid-template-columns: 64px 1fr 120px; gap: 24px; align-items: start; min-height: 145px; padding: 24px 0; border-bottom: 1px solid var(--line); text-decoration: none; transition: padding 160ms ease, color 160ms ease; }
.source-link:hover { padding-right: 18px; padding-left: 18px; color: var(--blue); }
.source-link > span { font: 500 9px var(--data); }
.source-link small, .source-link strong { display: block; }
.source-link small { margin-bottom: 8px; font: 500 8px var(--data); letter-spacing: .08em; text-transform: uppercase; }
.source-link strong { font-size: 18px; font-weight: 400; letter-spacing: -.035em; }
.source-link p { max-width: 820px; margin: 12px 0 0; color: var(--muted); font-size: 10px; line-height: 1.55; }
.source-link b { font-size: 9px; font-weight: 500; text-align: right; }

.theses-section { display: grid; grid-template-columns: .65fr 1.35fr; gap: 7vw; color: var(--white); background: var(--navy); }
.theses-section h2 { font-size: clamp(38px, 4.1vw, 66px); }
.theses-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line-inverse); border-left: 1px solid var(--line-inverse); }
.theses-grid > * { display: flex; flex-direction: column; min-height: 205px; padding: 22px; border-right: 1px solid var(--line-inverse); border-bottom: 1px solid var(--line-inverse); text-decoration: none; }
.theses-grid a { transition: color 160ms ease, background 160ms ease; }
.theses-grid a:hover { color: var(--blue); background: var(--white); }
.theses-grid span { font: 500 8px var(--data); letter-spacing: .08em; text-transform: uppercase; opacity: .7; }
.theses-grid strong { margin-top: auto; font-size: 20px; font-weight: 500; letter-spacing: -.04em; }
.theses-grid small { margin-top: 8px; font-size: 9px; line-height: 1.45; opacity: .7; }
.theses-grid article { color: var(--navy); background: var(--green); }

.site-footer { display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: center; min-height: 112px; padding: 0 3.5vw; color: var(--white); background: #03142e; }
.site-footer img { width: 104px; }
.site-footer p { margin: 0; font-size: 11px; text-align: center; }
.site-footer a:last-child { font-size: 9px; text-align: right; text-decoration: none; }

:focus-visible { outline: 2px solid var(--pink); outline-offset: 4px; }

@media (max-width: 1120px) {
  .main-nav { display: none; }
  .site-header { grid-template-columns: 1fr auto; }
  .hero { grid-template-columns: 1fr 1fr; }
  .section-heading, .system-intro { grid-template-columns: 130px 1fr; }
  .heading-aside, .system-intro > p:last-child { grid-column: 2; margin-top: 24px; }
  .system-intro .eyebrow { grid-column: 2; }
  .system-intro h2 { grid-column: 2; }
  .shift-detail-grid { grid-template-columns: repeat(2, 1fr); }
  .value-equation { grid-template-columns: 1fr 34px 1fr 34px 1fr; }
  .value-equation > :nth-last-child(-n+2) { display: none; }
  .contract-grid { grid-template-columns: repeat(2, 1fr); }
  .theses-section { grid-template-columns: 1fr; }
}

@media (max-width: 780px) {
  .site-header { min-height: 62px; padding: 0 18px; }
  .brand img { width: 90px; }
  .brand strong { max-width: 90px; line-height: 1.2; }
  .header-cta { padding: 10px; font-size: 0; }
  .header-cta span { font-size: 12px; }
  .hero { display: block; min-height: 0; }
  .hero-copy { min-height: 630px; padding: 72px 22px 52px; border-right: 0; }
  .kicker { margin-bottom: 42px; }
  h1 { font-size: clamp(66px, 21vw, 100px); }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .value-orbit { min-height: 540px; }
  .orbit-node { width: 118px; padding: 12px; }
  .node-output { left: 5%; }
  .node-judgment { right: 4%; }
  .node-action { right: 8%; }
  .orbit-core { width: 160px; }
  .hero-metrics { grid-template-columns: 1fr; }
  .hero-metrics a { min-height: 150px; border-right: 0; border-bottom: 1px solid var(--line); }
  .hero-source-note { text-align: left; }
  .thesis-section, .sectors-section, .contract-section, .sources-section, .theses-section, .shift-section { padding: 78px 22px; }
  .section-index { margin-bottom: 50px; }
  .thesis-copy { grid-template-columns: 1fr; gap: 28px; }
  .era-contrast { grid-template-columns: 1fr; margin-top: 54px; }
  .era-contrast article { min-height: 290px; border-right: 1px solid var(--line); border-left: 1px solid var(--line); }
  .contrast-arrow { min-height: 80px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .contrast-arrow i { width: 100%; height: 1px; transform: rotate(-8deg); }
  .thesis-turn { grid-template-columns: 36px 1fr; gap: 12px; }
  .section-heading, .system-intro { display: block; }
  .section-heading .section-index, .system-intro .section-index { margin-bottom: 50px; }
  .heading-aside, .system-intro > p:last-child { margin-top: 30px; }
  .shift-tabs { grid-template-columns: repeat(2, 1fr); }
  .shift-tabs button:nth-child(2) { border-right: 0; }
  .shift-panel { padding: 24px; }
  .shift-question { display: block; }
  .shift-question h3 { margin-top: 18px; }
  .shift-detail-grid { grid-template-columns: 1fr; margin-top: 50px; }
  .shift-detail-grid > div { min-height: 150px; }
  .value-equation { grid-template-columns: 1fr; }
  .value-equation b, .value-equation > :nth-last-child(-n+2) { display: none; }
  .value-equation > div { min-height: 95px; border-bottom: 1px solid var(--line-inverse); }
  .sector-explorer { grid-template-columns: 1fr; margin-top: 54px; }
  .sector-tabs { display: grid; grid-template-columns: repeat(2, 1fr); border-right: 0; border-bottom: 1px solid var(--line); }
  .sector-tabs button { border-right: 1px solid var(--line); }
  .sector-tabs button:nth-child(2n) { border-right: 0; }
  .sector-panel { min-height: 0; padding: 28px 24px 42px; }
  .sector-map { grid-template-columns: 1fr; }
  .sector-question { grid-template-columns: 1fr; }
  .system-section { padding: 78px 22px 0; }
  .system-steps li { grid-template-columns: 44px 1fr; gap: 12px; }
  .system-steps small { grid-column: 2; text-align: left; }
  .junior-question { display: block; margin: 72px -22px 0; padding: 72px 22px; }
  .junior-question > p { margin-top: 34px; }
  .junior-question a { display: inline-block; margin-top: 20px; }
  .contract-grid { grid-template-columns: 1fr; }
  .principles-section { display: block; padding: 78px 22px; }
  .principles-intro { position: static; margin-bottom: 58px; }
  .conversation-section { grid-template-columns: 1fr; }
  .conversation-copy { padding: 78px 22px 36px; }
  .conversation-wave { min-height: 360px; }
  .source-link { grid-template-columns: 34px 1fr; }
  .source-link b { grid-column: 2; text-align: left; }
  .theses-grid { grid-template-columns: 1fr; }
  .site-footer { grid-template-columns: 1fr auto; gap: 20px; padding: 30px 22px; }
  .site-footer p { grid-column: 1 / -1; grid-row: 2; text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}