:root {
  --paper:#f6f8f7; --white:#fff; --ink:#172f3a; --muted:#526870; --line:#cfdbda;
  --green:#116451; --sea:#dcece7; --blue:#326d91; --sky:#e9f1f6; --amber:#8b5524;
  --font:Inter,"Segoe UI",Arial,sans-serif; --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:145px}
body{margin:0;background:radial-gradient(ellipse at 82% 1%,rgba(17,100,81,.055) 0,rgba(50,109,145,.025) 19rem,transparent 36rem),var(--paper);color:var(--ink);font:16px/1.65 var(--font);-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p,figure,dl,dd{margin:0}
h1,h2,h3,h4{line-height:1.12;font-weight:600;letter-spacing:-.035em}
h1{font-size:clamp(3.1rem,5.6vw,5rem);font-weight:650;letter-spacing:-.055em;line-height:1.08}
h2{font-size:clamp(2.25rem,4.5vw,3.65rem)}
h3{font-size:1.55rem}
h4{font-size:1.15rem;line-height:1.3}
p{margin-top:1rem}
p:first-child{margin-top:0}
a{color:inherit;text-underline-offset:.24em;text-decoration-thickness:1px}
a:hover{color:var(--green)}
button{font:inherit;color:inherit;cursor:pointer}
button,a,summary{-webkit-tap-highlight-color:transparent}
button:focus-visible,a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--blue);outline-offset:5px}
button{border:1px solid var(--line);background:var(--white)}
button[hidden],[hidden]{display:none!important}
img{display:block;max-width:100%;height:auto}
small,.small{font-size:.875rem;line-height:1.6}
.wrap{width:min(calc(100% - 96px),var(--max));margin-inline:auto}
.skip-link{position:fixed;top:-100px;left:20px;z-index:100;padding:12px 20px;background:var(--ink);color:#fff}
.skip-link:focus{top:10px}
.site-header{height:88px;padding:0 4%;display:flex;align-items:center;justify-content:space-between;gap:24px;background:rgba(246,248,247,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30}
.identity{display:flex;align-items:center;gap:13px;text-decoration:none;font-weight:650;font-size:.95rem;line-height:1.3}
.identity small{display:block;font-size:.75rem;color:var(--muted);font-weight:400;margin-top:4px}
.monogram{font-size:2rem;font-weight:700;letter-spacing:-.1em;line-height:1}.monogram span{color:var(--green);letter-spacing:0}
.site-header nav{display:flex;gap:28px;font-size:.875rem}.site-header nav a{text-decoration:none}
.header-links{display:flex;align-items:center;gap:20px}.portfolio-link{font-size:.875rem;text-decoration:none;border-left:1px solid var(--line);padding-left:25px}.language-switch{font-size:.85rem;text-decoration:none;color:var(--green);font-weight:650}
.menu-toggle{display:none;padding:8px 12px;border-radius:4px;min-height:44px}
.hero{padding-top:35px;padding-bottom:30px}
.hero-context{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:18px;font-size:.75rem;text-transform:uppercase;letter-spacing:.09em;color:var(--muted);gap:20px}
.hero-grid{display:grid;grid-template-columns:1.12fr 1fr;gap:6%;align-items:center;padding:52px 0 42px}
.hero-copy em{font-family:Georgia,"Times New Roman",serif;font-weight:400;color:var(--green);letter-spacing:-.055em}
.hero-lead{font-size:1.22rem;line-height:1.5;max-width:470px;margin-top:28px}
.hero-contribution{max-width:490px;color:var(--muted);font-size:.95rem}
.actions{display:flex;flex-wrap:wrap;gap:18px 24px;align-items:center;margin-top:28px;font-size:.875rem}
.button{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;min-height:48px;padding:12px 20px;border-radius:3px}
.button.primary{background:var(--green);color:var(--white)}.button.primary:hover{background:#0d4c3e}
.text-link{text-decoration:none;border-bottom:1px solid var(--line);padding-block:10px}
.geometry-figure{padding:24px;background:var(--white);border:1px solid var(--line);box-shadow:0 18px 50px #172f3a09;position:relative}
.geometry-figure:after{content:"";position:absolute;right:-12px;bottom:-12px;width:45%;height:45%;border-bottom:1px solid #a8c8bd;border-right:1px solid #a8c8bd;z-index:-1}
.figure-top{display:flex;justify-content:space-between;gap:15px;align-items:start;margin-bottom:20px;font-size:.8rem}
.figure-top>span:first-child{font-weight:600}.figure-top>span:last-child{color:var(--muted)}
.geometry-grid{display:grid;grid-template-columns:65px 1fr 1fr;gap:10px;align-items:stretch}
.axis{display:flex;justify-content:center;align-items:center;font-size:.875rem;color:var(--muted)}
.axis-corner{font-size:.75rem;line-height:1.4;color:var(--muted)}
.distance{justify-content:start}.geometry{text-align:left;display:flex;flex-direction:column;padding:17px;min-height:144px;border-radius:2px;position:relative;gap:6px;transition:background .18s,border-color .18s}
.geometry.source{background:#f0f5f3;border-color:#d7e3de}
.geometry .position{font-size:2rem;font-weight:500;line-height:1.1;letter-spacing:-.03em}
.geometry-role{font-size:.75rem;text-transform:uppercase;letter-spacing:.07em}
.geometry-coordinate{font-size:.8rem;margin-top:auto;color:var(--muted)}
.geometry.target{background:var(--ink);color:#fff;border:1px dashed var(--ink)}.geometry.target .geometry-coordinate{color:#d7e5e5}
.geometry[aria-pressed=true]{outline:2px solid var(--green);outline-offset:3px}.geometry.target[aria-pressed=true]{outline-color:var(--ink)}
.geometry.source:hover{background:var(--sea)}
.geometry-figure figcaption{font-size:.875rem;line-height:1.6;min-height:113px;padding-top:22px;color:var(--muted)}
.geometry-figure figcaption strong{color:var(--ink)}
.figure-bottom{border-top:1px solid var(--line);padding-top:12px;margin-top:14px;display:flex;justify-content:space-between;gap:15px;font-size:.75rem;color:var(--muted)}
.dataset-strip{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.15fr 1fr;border-block:1px solid var(--line);padding:22px 0}
.dataset-strip>div{padding-left:26px;border-left:1px solid var(--line)}.dataset-strip>div:first-child{border:0;padding-left:0}
.dataset-strip dt{font-size:2rem;line-height:1.2;font-weight:550;letter-spacing:-.04em}
.dataset-strip dd{font-size:.875rem;color:var(--muted);margin-top:5px}
.credit-line{font-size:.75rem;color:var(--muted);margin-top:18px;max-width:1000px}
.chapter-nav{position:sticky;top:88px;z-index:20;border-block:1px solid var(--line);background:var(--paper)}
.chapter-nav nav{display:flex;justify-content:space-between;gap:15px}
.chapter-nav a{padding:15px 0;color:var(--muted);font-size:.875rem;text-decoration:none;border-bottom:2px solid transparent;white-space:nowrap}
.chapter-nav a span{margin-left:8px}.chapter-nav a[aria-current=true]{border-bottom-color:var(--green);color:var(--green)}
.section{padding-block:94px}
.section-heading{display:grid;grid-template-columns:1.15fr 1fr;column-gap:8%;row-gap:19px;margin-bottom:40px;align-items:end}
.eyebrow{display:block;color:var(--green);text-transform:uppercase;letter-spacing:.1em;font-size:.75rem;line-height:1.65;font-weight:650}
.section-heading>.eyebrow{grid-column:1/-1}
.section-heading>p{color:var(--muted);margin:0;max-width:500px}
.tinted{background:#edf3f1;border-block:1px solid var(--line)}
.measurement-flow{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);background:#fff}
.measurement-flow li{padding:27px;border-right:1px solid var(--line);position:relative}
.measurement-flow li:last-child{border:0}.measurement-flow li:not(:last-child):after{content:"→";position:absolute;right:-13px;top:35px;background:#fff;padding:0 6px;color:var(--green);z-index:1}
.step-number{font-size:.875rem;color:var(--green);display:block;margin-bottom:25px;font-variant-numeric:tabular-nums}
.measurement-flow h3{font-size:1.15rem}.measurement-flow p{font-size:.9rem;color:var(--muted)}
.measurement-note{margin-top:28px;padding:24px 30px;border-left:3px solid var(--green);background:var(--sea)}
.label{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--green)}
.measurement-note p{font-size:1.25rem;margin-top:8px}.measurement-note p span{color:#6a8581;padding-inline:8px}
.measurement-note small{display:block;margin-top:7px;color:var(--muted)}
.technical{border-top:1px solid var(--line);margin-top:28px;background:transparent}
.technical+ .technical{margin-top:0}.technical:last-of-type{border-bottom:1px solid var(--line)}
summary{cursor:pointer;list-style:none;padding:20px 36px 20px 0;position:relative;font-size:.95rem;font-weight:600;line-height:1.5}
summary::-webkit-details-marker{display:none}summary:after{content:"+";position:absolute;right:4px;top:17px;font-size:1.35rem;color:var(--green);font-weight:400}details[open]>summary:after{content:"−"}
summary span{font-size:.8rem;font-weight:400;display:block;color:var(--muted);margin-top:3px}
.detail-body{padding:8px 0 28px;font-size:.95rem;max-width:100%}.detail-body p{max-width:900px}
.detail-body h3{font-size:1.2rem}.detail-body h3+p{margin-top:12px}
.shift-evidence{display:grid;grid-template-columns:1.35fr .65fr;gap:28px;align-items:center;margin-top:28px;padding:20px;background:linear-gradient(145deg,#fff,#f1f7f4);border:1px solid var(--line)}.shift-evidence img{background:#fff;border:1px solid #dbe4e1}.shift-evidence figcaption{margin:0}.shift-evidence h3{font-size:1.35rem;margin-top:10px}.shift-evidence p{font-size:.92rem;color:var(--muted)}.shift-evidence small{display:block;margin-top:10px;color:var(--muted)}
.two-column{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.two-column>*{min-width:0}
figcaption{font-size:.875rem;line-height:1.65;color:var(--muted);margin-top:16px}
.source-link{display:inline-block;margin-top:17px;font-size:.8rem;color:var(--green)}
.bridge{margin-top:35px;padding-top:17px;border-top:1px solid var(--line);color:var(--green);font-size:.95rem;max-width:none!important}
.bridge:before{content:"↳";margin-right:12px}
.question-grid{display:grid;grid-template-columns:1fr 1.1fr;border:1px solid var(--line);background:#fff}
.historical-result{padding:40px}.reframed-question{padding:40px;background:#e0ede8;border-left:1px solid var(--line)}
.regime{display:inline-block;border:1px solid #bdd4ca;color:var(--green);padding:5px 10px;font-size:.75rem;line-height:1.4;border-radius:2px;background:#f0f7f3}
.large-number{font-size:clamp(4rem,7vw,6rem);font-weight:550;letter-spacing:-.07em;line-height:1.1;margin:20px 0 12px;font-variant-numeric:tabular-nums}.large-number>span{font-size:.45em;letter-spacing:-.03em;margin-left:4px}
.historical-result h3{font-size:1.4rem}.historical-result p,.reframed-question p{color:var(--muted)}
.old-question{font-size:1rem;text-decoration:line-through;text-decoration-color:#748d83}
.pivot-line{display:block;color:var(--green);font-size:1.4rem;margin:12px 0}
.reframed-question h3{font-size:2rem;line-height:1.23;color:var(--green)}
.group-explainer{display:grid;grid-template-columns:1fr 1fr;gap:60px;margin-top:56px;align-items:center}
.group-explainer h3{margin-top:13px;font-size:1.7rem}.group-explainer p{color:var(--muted)}
.segmented{display:inline-flex;border:1px solid var(--line);padding:4px;background:#fff;border-radius:4px;gap:4px}
.segmented button{border:0;padding:9px 15px;font-size:.875rem;border-radius:2px}
.segmented button[aria-pressed=true]{background:var(--ink);color:#fff}
.sweep-grid{display:grid;grid-template-columns:repeat(10,1fr);gap:7px;margin-top:23px;padding:19px;border:1px dashed #99b9ad;transition:background .2s;min-height:176px}
.sweep-grid i{height:21px;background:#9eb9bf;border-radius:1px}
.sweep-grid.grouped{background:var(--sea);border:2px solid var(--green);padding:18px}
.sweep-grid.grouped i{background:var(--green)}
.block-demo p{font-size:.9rem;min-height:70px}.block-demo small{color:var(--muted)}
.protocol-layout{display:grid;grid-template-columns:1.25fr 1fr;border:1px solid var(--line)}
.source-zone,.target-zone{padding:34px}
.source-zone{background:#fff}.target-zone{border-left:2px dashed #759790;background:#e7f0ed}
.protocol-steps{list-style:none;padding:0;margin:30px 0 0}
.protocol-steps li{display:flex;gap:20px;padding-bottom:25px}.protocol-steps li:last-child{padding-bottom:0}
.protocol-steps li>span{flex:0 0 32px;font-size:.9rem;color:var(--green);padding-top:2px}
.protocol-steps h3{font-size:1.2rem}.protocol-steps p{font-size:.95rem;color:var(--muted);margin-top:7px}
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.target-symbol{font-size:4rem;font-weight:500;line-height:1.2;margin-block:20px;color:var(--green);letter-spacing:-.07em}
.target-zone h3{font-size:1.35rem}.target-zone p{color:var(--muted)}
.boundary-label{display:block;font-size:.8rem;border-top:1px solid #b6ccc2;padding-top:17px;margin-top:24px;color:var(--green)}
.boundary-note{font-size:.875rem;color:var(--muted)}
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.result-metrics .large-number{color:#244f6a}.result-metrics>p{margin-top:5px;font-size:.9rem}
.muted{color:var(--muted)}
.f1-result{border-top:1px solid #c1d3df;margin-top:25px;padding-top:22px}.f1-result strong{font-size:2.65rem;font-weight:550;line-height:1;letter-spacing:-.04em}.f1-result p{font-size:.9rem;margin-top:10px}
.result-metrics .reference-note{font-size:.8rem;margin-top:24px;max-width:350px}
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.chart-axis.seed-axis{margin-left:62px;margin-right:77px}
.chart-reference{font-size:.75rem;color:var(--amber);margin-top:12px}
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.collapse-number{white-space:nowrap;font-size:2.6rem;letter-spacing:-.05em}.collapse-number small{font-size:1.2rem;color:var(--muted)}
.collapse-callout h3{font-size:1.15rem}.collapse-callout p{font-size:.9rem;color:var(--muted);margin-top:6px}.collapse-callout .source-link{white-space:nowrap;margin:0}
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table{border-collapse:collapse;width:100%;font-size:.875rem;margin-bottom:18px}
caption{text-align:left;font-size:.8rem;font-weight:500;color:var(--muted);padding:12px 0}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;font-variant-numeric:tabular-nums}
th{font-weight:600}thead th{background:#e5eeea}tbody th{white-space:nowrap}
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.figure-link span{display:block;font-size:.8rem;padding:8px 12px;border-top:1px solid var(--line)}
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.validity-check>span{font-size:1.3rem;color:var(--green)}.validity-check p{margin:0;font-size:.9rem;color:var(--muted)}
.diagnostic-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
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.diagnostic-tabs button span{display:block;font-size:1rem;margin-top:5px;font-weight:600}
.diagnostic-tabs button[aria-pressed=true]{background:var(--green);border-color:var(--green);color:#fff}
.diagnostic-panel{border:1px solid var(--line);background:#fff;padding:35px;margin-top:8px}
.panel-intro{max-width:820px;margin-bottom:30px}.panel-intro h3{font-size:1.9rem;margin-top:20px}.panel-intro p{color:var(--muted)}
.representation-chart{display:grid;grid-template-columns:repeat(4,1fr);gap:25px;margin-top:26px}
.chart-legend{display:flex;flex-wrap:wrap;gap:10px 24px;font-size:.8rem;color:var(--muted)}
.chart-legend span{display:flex;align-items:center;gap:7px}.chart-legend i{width:12px;height:12px;display:inline-block}
.raw-key{background:var(--blue)}.diff-key{background:#80989c}.embed-key{background:var(--green)}
.rep-group{min-width:0;padding:14px 12px 10px;border:1px solid transparent}
.rep-group:last-child{background:#edf4f1;border-color:#b7d0c3}
.rep-heading{display:flex;justify-content:space-between;align-items:center;gap:5px;font-size:1rem;margin-bottom:18px}
.rep-heading span{font-size:.75rem;color:var(--muted)}
.rep-bars{display:flex;gap:7px;height:195px;align-items:end;border-bottom:1px solid #bccccc;background:repeating-linear-gradient(to top,transparent 0,transparent calc(25% - 1px),#e6edeb calc(25% - 1px),#e6edeb 25%)}
.rep-bar{height:var(--bar);flex:1;min-width:0;position:relative;min-height:1px}
.rep-bar:before{content:attr(data-value);position:absolute;bottom:calc(100% + 4px);left:50%;transform:translateX(-50%);font-size:.75rem;color:var(--ink);font-variant-numeric:tabular-nums}
.rep-axis{display:flex;justify-content:space-between;font-size:.75rem;color:var(--muted);margin-top:9px}
.representation-takeaway{padding:23px 25px;margin-top:25px;background:var(--sea);display:flex;gap:30px;align-items:center}
.representation-takeaway>strong{font-size:2.3rem;line-height:1.1;color:var(--green);letter-spacing:-.04em;white-space:nowrap}
.representation-takeaway strong small{display:block;font-size:.875rem;letter-spacing:0;margin-top:5px}
.representation-takeaway p{font-size:.9rem;margin:0}.representation-takeaway p span{color:var(--muted)}
.mini-bars>div{display:grid;grid-template-columns:75px 1fr 65px;gap:12px;align-items:center;margin:20px 0;font-size:.875rem}
.mini-track{height:20px;background:#edf2f0}.mini-track i{display:block;background:var(--blue);height:100%;width:var(--bar)}
.finding-value{display:block;font-size:3.3rem;letter-spacing:-.06em;color:var(--green);line-height:1.2;margin-bottom:15px}.finding-value small{font-size:1.3rem}
.finding p{font-size:.95rem;color:var(--muted)}
.position-finding{display:grid;grid-template-columns:.7fr 1.3fr;gap:60px;align-items:center;padding:32px;margin-top:30px;border-block:1px solid var(--line)}
.position-finding>div:first-child>strong{display:block;font-size:4rem;letter-spacing:-.06em;line-height:1.3}.position-finding strong small{font-size:.5em}
.position-finding>div:first-child>span:last-child{color:var(--muted);font-size:.875rem}.position-finding h3{font-size:1.5rem}.position-finding p{color:var(--muted);font-size:.95rem}
.dann-story{background:#fff;border:1px solid var(--line);padding:35px;display:grid;grid-template-columns:1fr 1fr;gap:45px}
.dann-story h3{font-size:2rem;margin-top:20px}.dann-story p{font-size:.95rem;color:var(--muted)}
.dann-story>div:last-child{padding-top:10px}.inline-detail{margin-top:20px;border-top:1px solid var(--line)}.inline-detail p{padding-bottom:20px}
.method-evidence{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-top:35px;align-items:start}
.method-evidence>figure{padding:27px;background:#fff;border:1px solid var(--line)}
.method-evidence .figure-top{flex-wrap:wrap}.method-evidence h3{font-size:1.3rem}
.effect-row{display:grid;grid-template-columns:80px 1fr;gap:12px;margin-top:25px;font-size:.875rem;align-items:center}
.effect-track{height:30px;position:relative;background:#f2f5f4}
.effect-track:before{content:"";position:absolute;top:-12px;bottom:-12px;left:50%;border-left:1px dashed #778c85}
.effect-interval{position:absolute;top:14px;left:var(--low);width:var(--width);height:2px;background:var(--blue)}
.effect-interval:before,.effect-interval:after{content:"";position:absolute;top:-4px;width:1px;height:10px;background:var(--blue)}.effect-interval:after{right:0}
.effect-dot{position:absolute;left:var(--point);top:10px;width:10px;height:10px;border-radius:50%;background:var(--green);transform:translateX(-50%)}
.effect-value{grid-column:2;font-size:.75rem;color:var(--muted);margin-top:-7px}
.effect-axis{margin-left:92px}
.method-hypotheses details{border-top:1px solid var(--line)}.method-hypotheses p{font-size:.95rem;color:var(--muted);padding-bottom:20px;margin-top:0}
.method-hypotheses table{min-width:570px}
.gate-card{margin-top:40px;border:1px solid #d7c7b5;background:#f6f2ec;padding:30px}
.stopped{background:#fff8f0;color:#785025;border-color:#cbb79e}
.gate-card h3{margin-top:18px;font-size:1.65rem}
.gate-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-top:25px}
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