:root{--paper:#e7e3d7;--ink:#16191c;--graphite:#50565a;--rod:#d59b00;--line:rgba(22,25,28,.2);color-scheme:light}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Archivo,system-ui,sans-serif;line-height:1.55}
a{color:inherit}
a:focus-visible,button:focus-visible{outline:3px solid var(--rod);outline-offset:3px}
.skip{position:absolute;left:-9999px;top:10px;background:var(--ink);color:#fff;padding:10px;z-index:10}.skip:focus{left:10px}
.site-head{border-bottom:1px solid var(--line)}
.head-inner,.wrap{width:min(1120px,calc(100% - 40px));margin:auto}
.head-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{font-size:22px;font-weight:800;text-decoration:none;letter-spacing:-.03em}
.nav{display:flex;align-items:center;gap:22px;font-size:14px;font-weight:700}.nav a{text-decoration:none}.nav a:hover{text-decoration:underline;text-decoration-color:var(--rod);text-decoration-thickness:2px}
.button{display:inline-flex;align-items:center;justify-content:center;background:var(--ink);color:#fff;padding:12px 18px;text-decoration:none;font-weight:800;font-size:14px;border:1px solid var(--ink)}
.button.accent{background:var(--rod);color:var(--ink);border-color:var(--rod)}.button.ghost{background:transparent;color:var(--ink)}
.hero{padding:88px 0 70px;border-bottom:1px solid var(--line)}
.eyebrow,.mono{font-family:"IBM Plex Mono",monospace;text-transform:uppercase;letter-spacing:.14em;font-size:12px;font-weight:600}
h1{max-width:900px;font-size:clamp(42px,7vw,78px);letter-spacing:-.055em;line-height:.98;margin:16px 0 24px}
.lede{max-width:760px;font-size:clamp(18px,2.4vw,24px);color:var(--graphite)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.proof{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border-bottom:1px solid var(--line)}
.proof div{background:var(--paper);padding:24px 6vw}.proof strong{display:block;font-size:28px}.proof span{color:var(--graphite)}
.section{padding:70px 0}.section.alt{border-block:1px solid var(--line);background:rgba(255,255,255,.18)}
h2{font-size:clamp(30px,4.5vw,48px);letter-spacing:-.04em;line-height:1.05;margin:0 0 16px}.section-intro{max-width:720px;color:var(--graphite);font-size:18px;margin:0 0 32px}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.card{border:1px solid var(--line);padding:24px;display:flex;flex-direction:column;min-height:220px;background:rgba(255,255,255,.12)}.card h3{font-size:21px;line-height:1.15;margin:0 0 12px}.card p{color:var(--graphite);margin:0 0 22px}.card a{margin-top:auto;font-weight:800;text-decoration-color:var(--rod);text-decoration-thickness:2px;text-underline-offset:4px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;counter-reset:step}.steps article{counter-increment:step}.steps article:before{content:"0" counter(step);font-family:"IBM Plex Mono",monospace;color:var(--rod);font-weight:700}.steps h3{margin:10px 0 8px}.steps p{color:var(--graphite)}
.tool-page .hero{padding:64px 0 54px}.tool-page h1{font-size:clamp(38px,6vw,66px)}
.prose{max-width:820px}.prose h2{font-size:30px;margin-top:46px}.prose h3{font-size:20px;margin-top:30px}.prose p,.prose li{color:var(--graphite)}.formula{overflow:auto;background:var(--ink);color:#fff;padding:22px;font:600 18px/1.6 "IBM Plex Mono",monospace}.note{border-left:4px solid var(--rod);padding:3px 0 3px 18px}.crumbs{font-size:13px;margin-bottom:28px}.crumbs a{font-weight:700}
.site-foot{border-top:1px solid var(--line);padding:34px 0 48px;color:var(--graphite);font-size:13px}.foot-inner{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}.foot-links{display:flex;gap:18px;flex-wrap:wrap}
.validation-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:28px 0}.validation-grid article{border:1px solid var(--line);padding:20px}.validation-grid h3{margin:0 0 8px}.validation-grid p{margin:0}
.selector-page .hero{padding:54px 0 42px}.selector-page .hero h1{max-width:1020px}.selector-page .lede{max-width:860px}.selector-flow{display:flex;align-items:center;gap:13px;margin-top:30px;font:600 11px/1.2 "IBM Plex Mono",monospace;text-transform:uppercase;letter-spacing:.11em}.selector-flow span{display:flex;align-items:center;gap:7px}.selector-flow b{color:var(--rod);font-size:12px}.selector-flow i{display:block;width:38px;height:1px;background:var(--line)}
.selector-section{padding-top:46px}.selector-controls{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(290px,.55fr);gap:16px;align-items:stretch}.selector-step{min-width:0;border:1px solid var(--line);padding:24px;margin:0;background:rgba(255,255,255,.12)}.selector-step legend{padding:0 6px 0 0;font-size:21px;font-weight:800;letter-spacing:-.02em}.selector-step legend span{color:var(--rod);font:700 12px "IBM Plex Mono",monospace;letter-spacing:.08em;margin-right:8px}.step-help{color:var(--graphite);font-size:13.5px;margin:0 0 18px}.evidence-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.evidence-options label,.goal-options label{position:relative;cursor:pointer;border:1px solid var(--line);background:rgba(255,255,255,.18);font-weight:700;transition:background .12s,border-color .12s,transform .12s}.evidence-options label{min-height:78px;padding:12px;display:grid;grid-template-columns:30px 1fr;align-items:center;gap:10px;font-size:13px;line-height:1.3}.evidence-options svg{width:28px;height:28px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}.evidence-options input,.goal-options input{position:absolute;opacity:0;pointer-events:none}.evidence-options label:hover,.goal-options label:hover{border-color:var(--ink);transform:translateY(-1px)}.evidence-options label:has(input:focus-visible),.goal-options label:has(input:focus-visible){outline:3px solid var(--rod);outline-offset:2px}.evidence-options label:has(input:checked),.goal-options label:has(input:checked){background:var(--ink);color:#fff;border-color:var(--ink)}.evidence-options label:has(input:checked)::after{content:"✓";position:absolute;right:7px;top:5px;color:var(--rod);font:800 13px Archivo,sans-serif}.goal-options{display:grid;gap:8px}.goal-options label{min-height:42px;padding:10px 12px 10px 38px;display:flex;align-items:center;font-size:13px}.goal-options label::before{content:"";position:absolute;left:13px;width:10px;height:10px;border:1px solid currentColor;border-radius:50%}.goal-options label:has(input:checked)::before{background:var(--rod);border-color:var(--rod);box-shadow:inset 0 0 0 2px var(--ink)}
.selector-toolbar{display:flex;align-items:center;gap:10px;margin:16px 0 0}.selector-toolbar button{background:transparent;border:0;padding:6px 0;color:var(--graphite);font:700 11px "IBM Plex Mono",monospace;text-transform:uppercase;letter-spacing:.08em;text-decoration:underline;text-decoration-color:var(--rod);text-underline-offset:4px;cursor:pointer}.selector-toolbar button:hover{color:var(--ink)}.selector-toolbar button[disabled]{opacity:.45;cursor:not-allowed}.selector-toolbar span{color:var(--graphite);font-size:12px;margin-left:auto}
.selector-summary{margin:48px 0 24px}.summary-line{display:flex;align-items:end;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line);padding-bottom:14px}.selector-summary h2{margin:8px 0 0}.summary-line span{flex:0 0 auto;background:var(--ink);color:#fff;padding:6px 9px;font:600 10.5px "IBM Plex Mono",monospace;text-transform:uppercase;letter-spacing:.08em}.selector-summary>p:last-child{color:var(--graphite);max-width:820px;margin-top:14px}.result-group{margin-top:34px}.result-group[hidden]{display:none}.result-group-head{display:grid;grid-template-columns:130px 1fr;align-items:baseline;border-bottom:1px solid var(--line);padding-bottom:9px;margin-bottom:14px}.result-group-head .result-type{margin:0;color:var(--rod);font:700 11px "IBM Plex Mono",monospace;text-transform:uppercase;letter-spacing:.12em}.result-group-head h3{font-size:18px;margin:0}.selector-results{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.compact-results{grid-template-columns:repeat(3,minmax(0,1fr))}.selector-card{position:relative;border:1px solid var(--line);border-top:4px solid var(--ink);padding:22px;background:rgba(255,255,255,.16);display:flex;flex-direction:column;min-width:0}.selector-card::after{content:attr(data-rank);position:absolute;right:18px;top:16px;color:var(--rod);font:700 11px "IBM Plex Mono",monospace}.selector-card[hidden]{display:none}.selector-card .card-badge{color:var(--graphite);font:700 10px "IBM Plex Mono",monospace;text-transform:uppercase;letter-spacing:.11em;margin:0 34px 13px 0}.selector-card h3{font-size:22px;line-height:1.15;margin:0 0 9px}.selector-card>p:not(.card-badge){color:var(--graphite);margin:0 0 16px}.selector-card .fit-reason{font-size:13px;border-left:3px solid var(--rod);padding-left:10px}.card-inputs{font-size:12.5px}.card-inputs strong,.card-inputs span{display:block}.card-inputs strong{color:var(--ink);font-size:10px;text-transform:uppercase;letter-spacing:.1em;margin-bottom:5px}.card-actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:auto;padding-top:5px}.card-actions a{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--ink);padding:9px 11px;font-size:12px;font-weight:800;text-decoration:none}.card-actions .card-primary{background:var(--ink);color:#fff}.card-actions a:hover{background:var(--rod);color:var(--ink);border-color:var(--rod)}.selector-empty{border:1px dashed var(--line);padding:30px;margin-top:26px}.selector-empty[hidden]{display:none}.selector-empty h3{margin:0 0 6px}.selector-empty p{margin:0;color:var(--graphite)}.selector-caveat{max-width:900px;margin-top:34px}
.methodology-page .hero{padding:54px 0 44px}.methodology-page .hero h1{max-width:940px}.methodology-page .lede{max-width:850px}.method-flow{display:flex;align-items:center;gap:13px;margin-top:30px;font:600 11px/1.2 "IBM Plex Mono",monospace;text-transform:uppercase;letter-spacing:.11em}.method-flow span{display:flex;align-items:center;gap:7px}.method-flow b{color:var(--rod);font-size:12px}.method-flow i{display:block;width:44px;height:1px;background:var(--line)}
.method-status{background:var(--ink);color:#fff;padding:38px 0}.status-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:24px}.status-heading .eyebrow{color:var(--rod);margin:0 0 7px}.status-heading h2{font-size:30px;margin:0}.status-pass{border:1px solid rgba(255,255,255,.32);padding:8px 11px;font:600 10px "IBM Plex Mono",monospace;text-transform:uppercase;letter-spacing:.1em}.status-pass::before{content:"✓";color:var(--rod);margin-right:7px}.status-metrics{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid rgba(255,255,255,.2)}.status-metrics div{padding:20px;border-right:1px solid rgba(255,255,255,.2)}.status-metrics div:last-child{border-right:0}.status-metrics strong,.status-metrics span{display:block}.status-metrics strong{font-size:24px;letter-spacing:-.025em}.status-metrics span{color:rgba(255,255,255,.64);font-size:12px;margin-top:3px}.status-caveat{color:rgba(255,255,255,.64);font-size:12.5px;margin:15px 0 0;max-width:900px}
.method-index{border-bottom:1px solid var(--line)}.method-index .wrap{display:flex;align-items:center;gap:24px;min-height:60px;overflow-x:auto}.method-index span{flex:0 0 auto;color:var(--graphite);font:600 10px "IBM Plex Mono",monospace;text-transform:uppercase;letter-spacing:.1em}.method-index a{flex:0 0 auto;font-size:13px;font-weight:800;text-decoration:none}.method-index a:hover{text-decoration:underline;text-decoration-color:var(--rod);text-decoration-thickness:2px;text-underline-offset:4px}.method-section{scroll-margin-top:18px}.method-section.alt{background:rgba(255,255,255,.18);border-block:1px solid var(--line)}.method-split{display:grid;grid-template-columns:minmax(260px,.8fr) minmax(0,1.2fr);gap:80px}.method-split .eyebrow,.section-heading-row .eyebrow,.limitations-section .eyebrow{color:var(--rod);margin:0 0 14px}.method-copy>p:first-child{margin-top:0}.method-copy p{color:var(--graphite)}.method-callout{border-left:4px solid var(--rod);padding:3px 0 3px 18px;margin-top:26px}.method-callout strong,.method-callout span{display:block}.method-callout span{color:var(--graphite);margin-top:4px}.source-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);margin:24px 0}.source-fields span{background:var(--paper);padding:13px 15px;font-size:13px;font-weight:700}.method-section.alt .source-fields span{background:#ebe8de}.small-copy{font-size:13px}
.section-heading-row{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(260px,.6fr);align-items:end;gap:70px;margin-bottom:30px}.section-heading-row h2{margin:0}.section-heading-row>p{color:var(--graphite);margin:0}.method-layers{margin:0}.method-layers article{position:relative;background:rgba(255,255,255,.13);padding:24px;min-height:190px}.method-layers .layer-number{display:block;color:var(--rod);font:700 11px "IBM Plex Mono",monospace;margin-bottom:30px}.method-layers h3{font-size:21px}.coverage-panel{border:1px solid var(--line);margin-top:18px}.coverage-head{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line)}.coverage-head h3{margin:0;font-size:18px}.coverage-head span{font:600 10px "IBM Plex Mono",monospace;text-transform:uppercase;letter-spacing:.1em;color:var(--graphite)}.coverage-groups{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.coverage-groups div{padding:18px 20px;border-bottom:1px solid var(--line)}.coverage-groups div:nth-child(odd){border-right:1px solid var(--line)}.coverage-groups div:nth-last-child(-n+2){border-bottom:0}.coverage-groups strong,.coverage-groups span{display:block}.coverage-groups strong{font-size:13px}.coverage-groups span{color:var(--graphite);font-size:12.5px;margin-top:4px}.meaning-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:34px}.meaning-grid article{border-top:4px solid var(--ink);padding:20px;background:rgba(255,255,255,.13)}.meaning-grid article:last-child{border-top-color:var(--rod)}.meaning-grid .eyebrow{margin:0 0 13px}.meaning-grid ul{margin:0;padding-left:19px}.meaning-grid li{color:var(--graphite);margin:7px 0}.verification-action{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-top:26px;padding:20px 0;border-block:1px solid var(--line)}.verification-action strong,.verification-action span{display:block}.verification-action span{color:var(--graphite);font-size:13px;margin-top:3px}
.review-steps{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));counter-reset:review}.review-steps li{counter-increment:review;border-top:4px solid var(--ink);padding:18px 14px 0 0}.review-steps li::before{content:"0" counter(review);display:block;color:var(--rod);font:700 11px "IBM Plex Mono",monospace;margin-bottom:23px}.review-steps strong,.review-steps span{display:block}.review-steps strong{font-size:15px}.review-steps span{color:var(--graphite);font-size:12.5px;margin-top:6px}.record-card{display:grid;grid-template-columns:minmax(220px,.65fr) minmax(0,1.35fr);gap:40px;background:var(--ink);color:#fff;padding:30px;margin-top:46px}.record-card .eyebrow{color:var(--rod);margin:0 0 8px}.record-card h3{font-size:24px;margin:0;line-height:1.15}.record-card dl{margin:0}.record-card dl div{display:grid;grid-template-columns:110px 1fr;gap:16px;padding:9px 0;border-bottom:1px solid rgba(255,255,255,.18)}.record-card dl div:last-child{border-bottom:0}.record-card dt{font-weight:800;font-size:12px}.record-card dd{margin:0;color:rgba(255,255,255,.68);font-size:12px}.precision-strip{display:grid;grid-template-columns:280px 1fr;gap:30px;margin-top:30px}.precision-strip h3{font-size:18px;margin:3px 0}.precision-strip ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 30px;margin:0;padding-left:18px}.precision-strip li{color:var(--graphite);font-size:13px}.report-issue{border:1px solid var(--line);border-left:4px solid var(--rod);padding:18px;margin-top:24px}.report-issue strong,.report-issue span,.report-issue small{display:block}.report-issue span{color:var(--graphite);margin:4px 0}.report-issue small{color:var(--graphite)}.limitations-section{background:var(--ink);color:#fff}.limitations-section h2{max-width:820px}.limitations-lede{color:rgba(255,255,255,.7);font-size:18px;max-width:820px}.limitation-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}.limitation-tags span{border:1px solid rgba(255,255,255,.25);padding:8px 11px;color:rgba(255,255,255,.72);font-size:12px}.limitations-section .button.ghost{color:#fff;border-color:rgba(255,255,255,.5)}
@media(max-width:900px){.selector-controls{grid-template-columns:1fr}.compact-results{grid-template-columns:repeat(2,minmax(0,1fr))}.method-split,.section-heading-row{grid-template-columns:1fr;gap:20px}.review-steps{grid-template-columns:repeat(3,minmax(0,1fr))}.record-card{grid-template-columns:1fr}.precision-strip{grid-template-columns:1fr}}
@media(max-width:780px){.nav>a:not(.button){display:none}.hero{padding-top:62px}.grid,.steps,.proof,.validation-grid,.selector-results,.compact-results{grid-template-columns:1fr}.proof div{padding:20px}.card{min-height:0}.selector-page .hero{padding:42px 0 34px}.selector-flow{gap:8px}.selector-flow i{width:18px}.selector-section{padding-top:34px}.selector-step{padding:18px}.evidence-options{grid-template-columns:repeat(2,minmax(0,1fr))}.evidence-options label{min-height:82px;padding:10px;grid-template-columns:25px 1fr;font-size:12.5px}.evidence-options svg{width:24px;height:24px}.summary-line{display:block}.summary-line span{display:inline-block;margin-top:12px}.result-group-head{grid-template-columns:1fr;gap:4px}.selector-toolbar{flex-wrap:wrap}.selector-toolbar span{width:100%;margin-left:0}}
@media(max-width:780px){.methodology-page .hero{padding:42px 0 34px}.method-flow{gap:8px}.method-flow i{width:18px}.status-heading{display:block}.status-pass{display:inline-block;margin-top:14px}.status-metrics,.coverage-groups,.meaning-grid{grid-template-columns:1fr}.status-metrics div{border-right:0;border-bottom:1px solid rgba(255,255,255,.2)}.status-metrics div:last-child{border-bottom:0}.method-index .wrap{width:calc(100% - 24px)}.coverage-groups div,.coverage-groups div:nth-child(odd),.coverage-groups div:nth-last-child(-n+2){border-right:0;border-bottom:1px solid var(--line)}.coverage-groups div:last-child{border-bottom:0}.verification-action{align-items:stretch;flex-direction:column}.review-steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 12px}.record-card{padding:24px 20px}.record-card dl div{grid-template-columns:1fr;gap:2px}.precision-strip ul{grid-template-columns:1fr}.methodology-page .section{padding:54px 0}}
@media(max-width:480px){.review-steps{grid-template-columns:1fr}.method-flow i{width:10px}.method-flow{font-size:9.5px}.source-fields{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}