:root{
  --p-mint: oklch(0.944 0.018 162);
  --p-paper: oklch(0.988 0.004 162);
  --p-ink: oklch(0.235 0.012 162);
  --p-olive: oklch(0.47 0.026 112);
  --p-line: oklch(0.72 0.018 130);
  --surface: var(--p-mint);
  --surface-paper: var(--p-paper);
  --surface-dark: var(--p-ink);
  --text: var(--p-ink);
  --text-muted: oklch(0.39 0.018 140);
  --line: var(--p-line);
  --accent: var(--p-ink);
  --focus: oklch(0.47 0.026 112);
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --sans: "IBM Plex Sans", sans-serif;
  --max: 1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:92px}
body{font:16px/1.68 var(--sans);color:var(--text);background:var(--surface);-webkit-font-smoothing:antialiased;overflow-x:hidden}
body,button,a{-webkit-tap-highlight-color:transparent}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
button,a,summary{touch-action:manipulation}
button{cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.45}
:focus-visible{outline:3px solid var(--focus);outline-offset:4px}
::selection{background:var(--p-ink);color:var(--p-paper)}
svg{display:block;max-width:100%}
p{max-width:72ch}
h1,h2,h3{line-height:1.08;text-wrap:balance;font-weight:600}
h2{font-size:clamp(2rem,4.2vw,4rem);max-width:16ch;letter-spacing:-.045em}
h3{font-size:1.22rem;letter-spacing:-.015em}
ul{padding-left:1.2rem}
[hidden]{display:none!important}
.skip-link{position:fixed;top:8px;left:8px;z-index:20;padding:10px 14px;background:var(--p-paper);border:1px solid var(--p-ink);transform:translateY(-150%)}
.skip-link:focus{transform:translateY(0)}
.site-header{position:sticky;top:0;z-index:10;background:color-mix(in oklab,var(--p-mint) 88%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.header-inner{max-width:var(--max);margin:auto;min-height:76px;padding:10px 24px;display:flex;align-items:center;gap:26px}
.brand{display:flex;align-items:center;gap:12px;font-size:.88rem;font-weight:600;white-space:nowrap}
.brand-mark{display:inline-grid;place-items:center;border:1px solid currentColor;min-width:48px;height:32px;padding:0 8px;font:600 .72rem var(--mono);letter-spacing:.06em}
.main-nav{display:flex;align-items:center;gap:20px;margin-left:auto;font:500 .73rem var(--mono)}
.main-nav a{position:relative;padding:12px 0;white-space:nowrap}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:7px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out}
.main-nav a:hover::after,.main-nav a:focus-visible::after{transform:scaleX(1)}
.text-button{min-height:44px;padding:8px 12px;background:transparent;border:1px solid currentColor;font:500 .7rem var(--mono);transition:transform .2s ease-out,opacity .2s ease-out}
.text-button:hover{transform:translateY(-2px)}
.print-button{white-space:nowrap}
.hero{position:relative;min-height:calc(100dvh - 76px);display:flex;flex-direction:column;justify-content:space-between;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-inner{position:relative;z-index:1;max-width:var(--max);width:100%;margin:auto;padding:80px 24px 60px;display:grid;grid-template-columns:minmax(0,1.45fr) minmax(300px,.75fr);gap:64px;align-items:center}
.hero-copy{transform:translateY(var(--plax,0px))}
.mono-label,.section-index{font:500 .7rem/1.5 var(--mono);letter-spacing:.1em;text-transform:uppercase}
.hero h1{font-size:clamp(4rem,8.7vw,8rem);letter-spacing:-.075em;line-height:.88;margin:26px 0 34px;max-width:9ch}
.hero-lead{font-size:clamp(1.05rem,1.5vw,1.28rem);line-height:1.55;max-width:55ch}
.hero-actions{display:flex;align-items:center;gap:28px;flex-wrap:wrap;margin-top:42px}
.primary-action{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:12px 20px;background:var(--p-ink);color:var(--p-paper);border:1px solid var(--p-ink);font:500 .76rem var(--mono);transition:transform .2s ease-out,opacity .2s ease-out}
.primary-action:hover{transform:translateY(-3px);opacity:.88}
.line-link{display:inline-flex;align-items:center;gap:10px;min-height:44px;font:500 .78rem var(--mono);border-bottom:1px solid currentColor}
.line-link span{transition:transform .2s ease-out}
.line-link:hover span{transform:translateX(4px)}
.mission-panel{position:relative;background:var(--p-paper);border:1px solid var(--p-ink);font-family:var(--mono);transform:translateY(calc(var(--plax,0px) * -.45));box-shadow:14px 14px 0 color-mix(in oklab,var(--p-olive) 25%,transparent)}
.panel-head{display:flex;justify-content:space-between;gap:12px;padding:14px 16px;border-bottom:1px solid var(--p-ink);font-size:.67rem;font-weight:600}
.mission-list>div{padding:20px 16px;border-bottom:1px solid var(--line)}
.mission-list dt{font-size:.63rem;letter-spacing:.08em;margin-bottom:7px;color:var(--text-muted)}
.mission-list dd{font-size:.79rem;line-height:1.5}
.mission-status{padding:16px;font-size:.62rem;display:flex;align-items:center;gap:10px}
.status-dot{width:8px;height:8px;background:var(--p-olive);display:inline-block}
.hero-foot{position:relative;z-index:1;border-top:1px solid var(--line);padding:18px 24px;text-align:center;font:400 .72rem/1.5 var(--mono)}
.hero-orbit{position:absolute;right:-140px;top:-70px;width:min(65vw,740px);opacity:.14;pointer-events:none;transform:translateY(var(--plax,0px))}
.hero-orbit svg{fill:none;stroke:var(--p-olive);stroke-width:1}
.section{max-width:var(--max);margin:auto;padding:110px 24px;border-bottom:1px solid var(--line)}
.section-dark{max-width:none;background:var(--surface-dark);color:var(--p-paper);border-bottom:0;padding-left:max(24px,calc((100vw - var(--max))/2 + 24px));padding-right:max(24px,calc((100vw - var(--max))/2 + 24px))}
.section-paper{max-width:none;background:var(--surface-paper);padding-left:max(24px,calc((100vw - var(--max))/2 + 24px));padding-right:max(24px,calc((100vw - var(--max))/2 + 24px))}
.section-heading{margin-bottom:56px}
.section-index{margin-bottom:18px;color:var(--text-muted)}
.section-dark .section-index{color:var(--p-line)}
.section-intro{margin-top:24px;font-size:1.08rem;line-height:1.65;max-width:66ch;color:var(--text-muted)}
.section-dark .section-intro{color:var(--p-line)}
.formula-board{border-top:1px solid var(--p-ink)}
.formula-board>div{display:grid;grid-template-columns:220px 1fr;gap:32px;padding:24px 0;border-bottom:1px solid var(--line);align-items:baseline}
.formula-board span{font:500 .68rem var(--mono);letter-spacing:.08em;color:var(--text-muted)}
.formula-board strong{font-size:1.16rem;font-weight:500}
.method-grid{display:grid;grid-template-columns:1.4fr .8fr;gap:64px;margin:64px 0}
.prose p+p{margin-top:18px}
.principle-note{border-top:2px solid var(--p-ink);padding-top:18px}
.principle-note p{margin-top:16px;font-size:1.04rem}
.ai-levels{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--p-ink);border-bottom:1px solid var(--p-ink)}
.ai-levels>div{padding:26px 22px 28px 0}
.ai-levels>div+div{border-left:1px solid var(--line);padding-left:22px}
.ai-levels span{font:500 .66rem var(--mono);color:var(--text-muted)}
.ai-levels h3{margin:18px 0 12px}
.ai-levels p{font-size:.9rem;line-height:1.55;color:var(--text-muted)}
.principles-strip{margin-top:36px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.principles-strip>div{display:flex;flex-direction:column;gap:6px}
.principles-strip strong{font:600 .83rem var(--mono)}
.principles-strip span,.principles-strip p{font-size:.82rem;color:var(--text-muted)}
.principles-strip p{grid-column:1/-1;border-top:1px solid var(--line);padding-top:16px;font-family:var(--mono)}
.scheme-tabs,.timeline-nav{display:flex;gap:0;flex-wrap:wrap;border-bottom:1px solid currentColor;margin-bottom:40px}
.scheme-tabs button,.timeline-nav button{min-height:48px;padding:12px 20px;background:transparent;border:0;border-bottom:4px solid transparent;font:500 .76rem var(--mono);opacity:.65;transition:opacity .2s ease-out,transform .2s ease-out}
.scheme-tabs button:hover,.timeline-nav button:hover{opacity:1;transform:translateY(-2px)}
.scheme-tabs button[aria-selected="true"],.timeline-nav button[aria-selected="true"]{opacity:1;border-bottom-color:currentColor}
.scheme-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:28px;align-items:start}
.diagram-frame{border:1px solid var(--p-line);padding:12px;background:color-mix(in oklab,var(--p-ink) 65%,transparent)}
.diagram{width:100%;height:auto}
.diagram-node{cursor:pointer;outline:none}
.diagram-node rect{fill:var(--p-paper);stroke:var(--p-paper);stroke-width:1.5;transition:opacity .18s ease-out,transform .18s ease-out;transform-box:fill-box;transform-origin:center}
.diagram-node:hover rect,.diagram-node:focus-visible rect{opacity:.72;transform:scale(.98)}
.diagram-node.selected rect{stroke:var(--p-olive);stroke-width:4}
.diagram-node .node-inverted,.diagram-node .node-strong{fill:var(--p-olive)}
.node-text{font:600 16px var(--mono);text-anchor:middle;fill:var(--p-ink)}
.node-sub{font:400 14px var(--mono);text-anchor:middle;fill:var(--p-ink)}
.node-text.light,.node-sub.light{fill:var(--p-paper)}
.context-label{font:500 12px var(--mono);fill:var(--p-line);letter-spacing:.06em}
.flow-line{fill:none;stroke:var(--p-line);stroke-width:1.5}
.arrow-head{fill:var(--p-line)}
.flow-line.dashed{stroke-dasharray:7 6}
.node-detail{border-top:1px solid var(--p-paper);padding-top:18px;min-height:280px}
.node-detail h3{font-size:1.6rem;margin:16px 0}
.node-detail>p:not(.mono-label){color:var(--p-line);font-size:.94rem}
.detail-question{margin-top:32px;border-top:1px solid var(--p-olive);padding-top:18px}
.detail-question span{font:500 .62rem var(--mono);letter-spacing:.08em;color:var(--p-line)}
.detail-question p{margin-top:12px;font-size:.9rem}
.accordion-list{border-top:1px solid var(--p-ink)}
.accordion-list details{border-bottom:1px solid var(--line)}
.accordion-list summary{list-style:none;display:flex;align-items:center;gap:24px;min-height:72px;padding:18px 0;font-size:1.08rem;font-weight:600;cursor:pointer;position:relative}
.accordion-list summary::-webkit-details-marker{display:none}
.accordion-list summary::after{content:"+";position:absolute;right:4px;font:400 1.5rem var(--mono)}
.accordion-list details[open] summary::after{content:"−"}
.accordion-list summary span{font:500 .7rem var(--mono);color:var(--text-muted)}
.details-body{padding:0 52px 28px;max-width:850px;color:var(--text-muted)}
.details-body p+p{margin-top:14px}
.moderator-line{font-family:var(--mono);font-size:.82rem;border-left:1px solid var(--p-olive);padding-left:16px}
.hypothesis-card{margin-top:56px;padding:32px;border:1px solid var(--p-ink);background:var(--surface-paper)}
.hypothesis-card p{margin-top:18px;font-size:1.02rem}
.case-thesis{display:grid;grid-template-columns:1.3fr .7fr;gap:64px;margin-bottom:56px}
.case-thesis>div>p{margin-top:18px;font-size:1.25rem;line-height:1.55}
.case-basis{border-top:1px solid var(--p-ink);padding-top:18px}
.case-basis ul{margin-top:16px;display:grid;gap:8px;font-size:.9rem;color:var(--text-muted)}
.table-wrap{max-width:100%;overflow-x:auto;border-top:1px solid var(--p-ink)}
.comparison-table{width:100%;border-collapse:collapse;text-align:left;font-size:.88rem;min-width:720px}
.comparison-table th,.comparison-table td{padding:18px 18px 18px 0;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.5}
.comparison-table thead th{font:500 .65rem var(--mono);letter-spacing:.07em;text-transform:uppercase;color:var(--text-muted);padding-top:14px;padding-bottom:14px}
.comparison-table tbody th{font-weight:600;width:18%}
.contours{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;margin-top:56px}
.contours article{border-top:2px solid var(--p-ink);padding-top:18px}
.contours article>span{font:500 .66rem var(--mono);color:var(--text-muted)}
.contours h3{margin:16px 0 12px}
.contours p{font-size:.9rem;color:var(--text-muted)}
.algorithm-list pre{font:400 .8rem/1.7 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere;color:var(--text);margin-bottom:18px}
.timeline-nav{margin-bottom:0}
.timeline-track{display:grid;grid-template-columns:repeat(4,1fr);margin:22px 0 44px;border-top:1px solid var(--p-olive)}
.timeline-track span{position:relative}
.timeline-track span::before{content:"";position:absolute;width:9px;height:9px;top:-5px;left:0;background:var(--p-paper);border:1px solid var(--p-olive)}
.timeline-stage{display:grid;grid-template-columns:230px 1fr;gap:48px;align-items:center;padding:24px 0 44px}
.year-display{display:flex;align-items:baseline;gap:12px}
.year-display>span{font:500 clamp(5rem,10vw,8rem)/.9 var(--mono);letter-spacing:-.08em}
.year-display small{font:500 .66rem var(--mono);color:var(--p-line)}
.stage-content h3{font-size:clamp(1.8rem,3.2vw,3rem);margin:12px 0 18px}
.stage-content>p:last-child{color:var(--p-line);font-size:1rem}
.time-detail-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-bottom:64px}
.time-detail-grid>div{border-top:1px solid var(--p-olive);padding-top:18px}
.time-detail-grid span{font:500 .62rem var(--mono);letter-spacing:.08em;color:var(--p-line)}
.time-detail-grid p{margin-top:14px;font-size:.88rem;line-height:1.6}
.capability-wrap{border-top-color:var(--p-paper)}
.section-dark .comparison-table th,.section-dark .comparison-table td{border-bottom-color:var(--p-olive);padding-right:16px}
.section-dark .comparison-table thead th{color:var(--p-line)}
.capability-table{min-width:900px;font-size:.8rem}
.print-timeline{display:none}
.timeline-all{display:grid;gap:24px;margin-bottom:56px}
.timeline-all article{border-top:1px solid var(--p-olive);padding-top:18px}
.timeline-all h3{margin-bottom:12px}
.timeline-all p{color:var(--p-line)}
.process-list{list-style:none;border-top:1px solid var(--p-ink)}
.process-list li{display:grid;grid-template-columns:50px 1fr 260px;gap:24px;padding:26px 0;border-bottom:1px solid var(--line);align-items:start}
.process-list li>span{font:500 .72rem var(--mono);color:var(--text-muted)}
.process-list h3{margin-bottom:8px}
.process-list p{font-size:.9rem;color:var(--text-muted)}
.process-list strong{font:500 .7rem/1.5 var(--mono);text-align:right}
.metrics-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;margin:64px 0}
.metrics-grid>div{border-top:1px solid var(--p-ink);padding-top:18px}
.metrics-grid p{margin-top:12px;font-size:.9rem;color:var(--text-muted)}
.final-thesis{padding:36px;border:1px solid var(--p-ink);background:var(--surface-paper)}
.final-thesis p{margin-top:16px;font-size:1.25rem;line-height:1.55;max-width:65ch}
.sources-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:64px}
.source-links{display:flex;flex-direction:column;border-top:1px solid var(--p-ink)}
.source-links h3{padding:18px 0 24px}
.source-links a{display:flex;justify-content:space-between;gap:20px;padding:16px 0;border-top:1px solid var(--line);font-size:.88rem}
.source-links a span{font-family:var(--mono)}
.source-links a:hover{text-decoration:underline;text-underline-offset:4px}
.site-footer{max-width:var(--max);margin:auto;padding:52px 24px;display:flex;align-items:center;justify-content:space-between;gap:32px}
.site-footer>div{display:flex;align-items:center;gap:18px}
.site-footer p{font-size:.8rem;color:var(--text-muted)}
@media (max-width:1000px){
  .header-inner{gap:16px}.main-nav{gap:14px}.brand>span:last-child{display:none}
  .hero-inner{grid-template-columns:1.2fr .8fr;gap:32px}
  .scheme-layout{grid-template-columns:1fr}.node-detail{min-height:0;max-width:680px}
  .time-detail-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  html{scroll-padding-top:120px}
  .header-inner{flex-wrap:wrap;padding:8px 16px;gap:4px 12px;min-height:66px}
  .brand{min-height:40px}.print-button{margin-left:auto}
  .main-nav{order:3;width:100%;overflow-x:auto;gap:18px;margin:0;padding-bottom:2px}
  .main-nav a{min-height:40px;display:inline-flex;align-items:center}
  .hero{min-height:auto}.hero-inner{padding:64px 18px 48px;grid-template-columns:1fr;gap:48px}
  .hero h1{font-size:clamp(3rem,13vw,5rem);max-width:100%;letter-spacing:-.065em}
  .hero-actions{gap:18px}.mission-panel{max-width:480px;box-shadow:8px 8px 0 color-mix(in oklab,var(--p-olive) 25%,transparent)}
  .hero-foot{padding:16px 18px;text-align:left}
  .hero-orbit{width:800px;right:-420px;top:60px}
  .section,.section-dark,.section-paper{padding:76px 18px}
  .section-heading{margin-bottom:40px}h2{font-size:2.4rem}.section-intro{font-size:1rem}
  .formula-board>div{grid-template-columns:1fr;gap:8px;padding:20px 0}
  .method-grid,.case-thesis,.sources-grid{grid-template-columns:1fr;gap:36px;margin:44px 0}
  .ai-levels{grid-template-columns:1fr 1fr}.ai-levels>div+div{border-left:0;padding-left:0}.ai-levels>div:nth-child(even){border-left:1px solid var(--line);padding-left:18px}.ai-levels>div{border-bottom:1px solid var(--line)}
  .principles-strip,.contours,.metrics-grid{grid-template-columns:1fr;gap:24px}
  .scheme-tabs button,.timeline-nav button{padding:10px 12px;font-size:.68rem;min-height:46px}
  .diagram-frame{padding:4px;overflow-x:auto}.diagram{min-width:650px}
  .node-detail{margin-top:20px}.accordion-list summary{gap:14px;font-size:1rem}.details-body{padding-left:0;padding-right:20px}
  .hypothesis-card,.final-thesis{padding:24px 20px}.case-thesis>div>p{font-size:1.1rem}
  .timeline-stage{grid-template-columns:1fr;gap:24px}.year-display>span{font-size:5rem}
  .time-detail-grid{grid-template-columns:1fr;gap:24px;margin-bottom:44px}
  .process-list li{grid-template-columns:36px 1fr;gap:16px}.process-list strong{grid-column:2;text-align:left}
  .site-footer{padding:40px 18px;align-items:flex-start;flex-direction:column}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}.hero-copy,.mission-panel,.hero-orbit{transform:none!important}
}
@media print{
  @page{margin:16mm}
  body{background:#fff;color:#111;font-size:10pt}
  .site-header,.hero-actions,.hero-orbit,.scheme-tabs,.timeline-nav,.timeline-track,.timeline-stage,.time-detail-grid,.timeline-all,.site-footer,.skip-link{display:none!important}
  .hero{min-height:0;display:block;border:0}.hero-inner{display:block;padding:20px 0}.hero h1{font-size:44pt;margin:16px 0}.mission-panel{box-shadow:none;margin-top:24px;max-width:none}.hero-foot{text-align:left;padding:12px 0}
  .section,.section-dark,.section-paper{max-width:none;padding:24px 0;background:#fff;color:#111;break-inside:auto}
  .section-heading{margin-bottom:24px}h2{font-size:24pt}.section-intro,.section-dark .section-intro{color:#333}
  .scheme-layout{display:block}.scheme-view[hidden]{display:block!important}.scheme-view{margin-bottom:28px}.diagram-frame{background:#fff;border-color:#666}.node-detail{display:none}
  .diagram{min-width:0;max-height:170mm}.node-text,.node-sub{fill:#111}.node-text.light,.node-sub.light{fill:#fff}.context-label{fill:#555}.flow-line{stroke:#555}
  .method-grid,.case-thesis,.sources-grid{gap:24px}.ai-levels,.principles-strip,.contours,.metrics-grid{break-inside:avoid}
  .accordion-list details{break-inside:avoid}.accordion-list details:not([open]) .details-body{display:block}.accordion-list summary::after{display:none}
  .hypothesis-card,.final-thesis{break-inside:avoid}.process-list li{break-inside:avoid}
  .capability-wrap{display:none}.print-timeline{display:block!important}.print-timeline article{break-inside:avoid;border-top:1px solid #777;padding:14px 0}
  a{text-decoration:none}.source-links a span{display:none}
}