/*! tailwindcss v4.2.1 | MIT License | https://tailwindcss.com */
@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,:before,:after,::backdrop{--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial}}}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-transition-duration:.15s;--default-transition-timing-function:cubic-bezier(.4, 0, .2, 1);--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.visible{visibility:visible}.relative{position:relative}.start{inset-inline-start:var(--spacing)}.end{inset-inline-end:var(--spacing)}.contents{display:contents}.hidden{display:none}.table{display:table}.blur{--tw-blur:blur(8px);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.invert{--tw-invert:invert(100%);filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}.transition{transition-property:color,background-color,border-color,outline-color,text-decoration-color,fill,stroke,--tw-gradient-from,--tw-gradient-via,--tw-gradient-to,opacity,box-shadow,transform,translate,scale,rotate,filter,-webkit-backdrop-filter,backdrop-filter,display,content-visibility,overlay,pointer-events;transition-timing-function:var(--tw-ease,var(--default-transition-timing-function));transition-duration:var(--tw-duration,var(--default-transition-duration))}}:root{--bg:#f6f5f0;--surface:#eceae3;--surface-strong:#dfdcd2;--ink:#25251f;--muted:#68675f;--line:#c9c5b9;--accent:#d56034;--accent-strong:#a84424;--on-accent:#fffaf2;--header-height:80px;--page:min(1240px, calc(100vw - 48px));--font-sans:var(--font-geist-sans), Arial, sans-serif;--font-mono:var(--font-geist-mono), "SFMono-Regular", Consolas, monospace;--font-editorial:var(--font-display), Georgia, serif}@media (prefers-color-scheme:dark){:root{--bg:#171815;--surface:#22231f;--surface-strong:#2c2d28;--ink:#f2efe7;--muted:#aaa79c;--line:#3f4039;--accent:#ed8054;--accent-strong:#ff9a70;--on-accent:#171815}}*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--bg)}body{--font-sans:var(--font-geist-sans), Arial, sans-serif;--font-mono:var(--font-geist-mono), "SFMono-Regular", Consolas, monospace;--font-editorial:var(--font-display), Georgia, serif;background:var(--bg);color:var(--ink);font-family:var(--font-sans);text-rendering:optimizelegibility;margin:0;line-height:1.55}a{color:inherit;text-underline-offset:.2em;text-decoration-thickness:1px}button,input,select,textarea{color:inherit;font:inherit}button,summary,a{-webkit-tap-highlight-color:transparent}:focus-visible{outline:3px solid var(--accent);outline-offset:3px}::selection{background:var(--accent);color:var(--on-accent)}.skip-link{z-index:100;background:var(--ink);color:var(--bg);padding:12px 18px;position:fixed;top:-80px;left:16px}.skip-link:focus-visible{top:16px}.site-header{width:var(--page);height:var(--header-height);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;margin:0 auto;display:flex}@supports (color:color-mix(in lab, red, red)){.site-header{border-bottom:1px solid color-mix(in srgb, var(--line) 72%, transparent)}}.wordmark{color:var(--ink);letter-spacing:-.035em;align-items:center;gap:11px;font-weight:650;text-decoration:none;display:inline-flex}.brand-mark{width:30px;height:22px;display:inline-block;position:relative}.brand-mark:before,.brand-mark:after{content:"";background:var(--ink);transform-origin:0;width:10px;height:1px;position:absolute;left:5px}.brand-mark:before{top:15px;transform:rotate(-32deg)}.brand-mark:after{top:9px;left:16px;transform:rotate(-29deg)}.brand-mark i{background:var(--accent);width:6px;height:6px;position:absolute}.brand-mark i:first-child{bottom:0;left:0}.brand-mark i:nth-child(2){top:8px;left:12px}.brand-mark i:nth-child(3){top:0;right:0}.desktop-nav{align-items:center;gap:28px;height:100%;font-size:.84rem;font-weight:590;display:flex}.desktop-nav a{text-decoration:none;position:relative}.desktop-nav a:not(.nav-cta):hover{color:var(--accent)}.desktop-nav a:not(.nav-cta):after{content:"";transform-origin:100%;background:currentColor;height:1px;transition:transform .22s;position:absolute;bottom:-7px;left:0;right:0;transform:scaleX(0)}.desktop-nav a:not(.nav-cta):hover:after{transform-origin:0;transform:scaleX(1)}.nav-cta{background:var(--accent);color:var(--on-accent);border-radius:999px;padding:11px 17px}.mobile-nav{display:none}main{display:block;overflow:clip}.home-hero,.page-hero,.dataset-record-hero{width:var(--page);border-bottom:1px solid var(--line);margin:0 auto}.home-hero{isolation:isolate;width:min(1480px,100vw - 32px);min-height:min(860px, calc(100dvh - var(--header-height) - 16px));color:#fffaf2;background:#273034;border-bottom:0;align-items:flex-end;padding:clamp(64px,9vw,116px);display:flex;position:relative;overflow:hidden}.home-hero-image{z-index:-3;object-fit:cover;object-position:58% center}.home-hero-scrim{z-index:-2;background:linear-gradient(90deg,#121716db 0%,#1217168f 42%,#12171614 72%),linear-gradient(#0000 55%,#12171661 100%);position:absolute;inset:0}.home-hero:after{content:"";z-index:-1;pointer-events:none;border:1px solid #fffaf238;position:absolute;inset:20px}.home-hero-copy{max-width:880px}.home-hero-copy h1,.page-hero h1,.dataset-record-hero h1,.article-header h1,.term-page h1,.contact-copy h1,.legal-page h1{max-width:960px;font-size:clamp(3.1rem,7.2vw,7.4rem);font-family:var(--font-editorial);letter-spacing:-.045em;text-wrap:balance;margin:0;font-weight:400;line-height:.96}.home-hero-copy h1{text-shadow:0 2px 28px #0000002e;max-width:850px;font-size:clamp(4.25rem,7.15vw,7.4rem)}.home-hero-copy h1 span{white-space:nowrap;display:block}.page-hero h1,.dataset-record-hero h1,.article-header h1,.contact-copy h1,.legal-page h1{font-size:clamp(2.8rem,6vw,6.4rem)}.term-page h1{font-size:clamp(4rem,10vw,9rem)}.eyebrow{color:var(--accent);font-family:var(--font-mono);letter-spacing:.025em;text-transform:none;margin:0 0 20px;font-size:.72rem;font-weight:600}.home-hero .eyebrow{color:#f3a17f}.hero-lede,.page-lede{max-width:690px;color:var(--muted);margin:32px 0 0;font-size:clamp(1.08rem,1.8vw,1.42rem);line-height:1.45}.home-hero .hero-lede{color:#fffaf2d1;max-width:590px;margin-top:28px;font-size:clamp(1.05rem,1.45vw,1.3rem)}.home-hero-index{color:#fffaf2b8;font-family:var(--font-mono);letter-spacing:.04em;gap:8px;font-size:.64rem;display:grid;position:absolute;bottom:clamp(42px,5vw,72px);right:clamp(46px,5vw,80px)}.home-hero-index span{grid-template-columns:16px auto;align-items:center;gap:9px;display:grid}.home-hero-index span:before{content:"";background:#f08a5d;height:1px}.button-row{flex-wrap:wrap;gap:12px;margin-top:36px;display:flex}.button{border:1px solid var(--ink);min-height:48px;color:var(--ink);cursor:pointer;background:0 0;border-radius:999px;justify-content:center;align-items:center;padding:12px 18px;font-size:.9rem;font-weight:720;line-height:1;text-decoration:none;transition:background-color .18s,color .18s,border-color .18s,transform .18s;display:inline-flex}.button:hover{background:var(--ink);color:var(--bg);transform:translateY(-2px)}.button-primary{border-color:var(--accent);background:var(--accent);color:var(--on-accent)}.button-primary:hover{border-color:var(--accent-strong);background:var(--accent-strong);color:var(--on-accent)}.button-secondary{border-color:var(--line)}.home-hero .button-secondary{color:#fffaf2;border-color:#fffaf285}.home-hero .button-secondary:hover{color:#25251f;background:#fffaf2;border-color:#fffaf2}.button-light{border-color:var(--on-accent);background:var(--on-accent);color:var(--accent-strong)}.text-link{color:var(--ink);font-weight:680}.text-link:hover{color:var(--accent)}.trajectory-visual{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface);margin:0;position:relative}.trajectory-visual figcaption{border-bottom:1px solid var(--line);font-family:var(--font-mono);letter-spacing:.03em;justify-content:space-between;gap:24px;padding:14px 18px;font-size:.68rem;display:flex}.trajectory-visual figcaption span{color:var(--accent);text-transform:uppercase}.trajectory-axis{padding:16px 18px}.trajectory-frame{grid-template-columns:34px 1fr;gap:12px;min-height:76px;display:grid}.frame-index{border:1px solid var(--accent);width:26px;height:26px;color:var(--accent);font-family:var(--font-mono);place-items:center;font-size:.66rem;display:grid}.trajectory-frame>div{grid-template-columns:66px 100px 1fr;align-content:start;gap:12px;padding-top:4px;display:grid;position:relative}.trajectory-frame:not(:last-child)>div:after{content:"";background:var(--accent);width:1px;height:47px;position:absolute;top:29px;left:-25px}.trajectory-frame small,.trajectory-frame code{font-family:var(--font-mono);font-size:.69rem}.trajectory-frame small{color:var(--muted)}.trajectory-frame strong{font-size:.78rem}.trajectory-frame code{overflow-wrap:anywhere;color:var(--accent)}.trajectory-visual>p{border-top:1px solid var(--line);color:var(--muted);margin:0;padding:14px 18px;font-size:.72rem}.trajectory-visual-compact .trajectory-frame{min-height:62px}.definition-section,.catalog-section,.resources-section,.operator-section,.about-statement,.operator-detail,.catalog-program{width:var(--page);border-bottom:1px solid var(--line);grid-template-columns:minmax(260px,.76fr) minmax(0,1.24fr);gap:clamp(40px,8vw,128px);margin:0 auto;padding:clamp(80px,11vw,150px) 0;display:grid}.definition-title>span,.dataset-card-topline,.record-summary dt,.record-fields dt,.article-header dt{color:var(--muted);font-family:var(--font-mono);letter-spacing:.07em;text-transform:uppercase;font-size:.7rem}.definition-title h2,.section-heading h2,.proof-statement h2,.catalog-intro h2,.resources-lead h2,.operator-section h2,.conversion-band h2,.about-statement h2,.operator-detail h2,.catalog-program h2,.contact-expectations h2{letter-spacing:-.055em;text-wrap:balance;margin:12px 0 0;font-size:clamp(2rem,4vw,4.4rem);font-weight:630;line-height:.98}.definition-copy>p:first-child,.answer-block>p:last-child{letter-spacing:-.035em;margin-top:0;font-size:clamp(1.4rem,2.8vw,2.5rem);line-height:1.28}.definition-copy>p:not(:first-child){max-width:700px;color:var(--muted)}.sequence-section,.proof-section,.reference-section,.catalog-directory,.faq-section,.related-section{width:var(--page);border-bottom:1px solid var(--line);margin:0 auto;padding:clamp(80px,10vw,140px) 0}.section-heading{max-width:820px;margin-bottom:48px}.section-heading>p{max-width:650px;color:var(--muted);font-size:1.08rem}.signal-grid{border-top:1px solid var(--line);border-left:1px solid var(--line);grid-template-columns:1.65fr 1fr;grid-template-areas:"primary second""primary third""accent accent";display:grid}.signal-grid article{border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:210px;padding:30px}.signal-grid article:nth-child(2){grid-area:second}.signal-grid article:nth-child(3){grid-area:third}.signal-primary{flex-direction:column;grid-area:primary;justify-content:flex-end;display:flex;min-height:421px!important}.signal-accent{background:var(--accent);color:var(--on-accent);grid-area:accent;grid-template-columns:130px 1fr 1fr;align-items:baseline;gap:24px;display:grid}.signal-grid span,.principles-grid span{font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;font-size:.7rem}.signal-grid h3{letter-spacing:-.04em;margin:8px 0;font-size:clamp(1.25rem,2.3vw,2rem)}.signal-grid p{color:var(--muted);margin:0}.catalog-intro>p:not(.eyebrow),.resources-lead>p:not(.eyebrow),.operator-section p,.about-statement p,.operator-detail p,.catalog-program p{color:var(--muted);font-size:1.05rem}.catalog-intro .button{margin-top:22px}.dataset-card{border:1px solid var(--line);background:var(--surface);flex-direction:column;min-height:100%;padding:28px;display:flex}.dataset-card-featured{border-color:var(--ink);background:0 0}.dataset-card-topline{justify-content:space-between;gap:20px;display:flex}.dataset-card h2{letter-spacing:-.055em;margin:52px 0 12px;font-size:clamp(2rem,4vw,4rem);line-height:.96}.dataset-card>p{color:var(--muted)}.dataset-card dl{border-top:1px solid var(--line);margin:32px 0}.dataset-card dl div,.record-summary div,.record-fields div{border-bottom:1px solid var(--line);grid-template-columns:130px 1fr;gap:16px;padding:12px 0;display:grid}.dataset-card dt{color:var(--muted);font-family:var(--font-mono);text-transform:uppercase;font-size:.68rem}.dataset-card dd,.record-summary dd,.record-fields dd{margin:0;font-size:.84rem}.dataset-card .text-link{margin-top:auto}.proof-section{grid-template-columns:minmax(260px,.72fr) minmax(0,1.28fr);gap:clamp(40px,8vw,130px);display:grid}.proof-statement p{color:var(--muted)}.proof-list article{border-top:1px solid var(--line);grid-template-columns:110px 1fr;gap:24px;padding:20px 0;display:grid}.proof-list article:last-child{border-bottom:1px solid var(--line)}.proof-list strong{color:var(--accent);font-family:var(--font-mono);text-transform:uppercase;font-size:.74rem}.proof-list p{margin:0}.reference-grid,.dataset-list{grid-template-columns:1fr 1fr;gap:18px;display:grid}.dataset-list .dataset-card:first-child{grid-column:1/-1}.resource-feature-list{border-top:1px solid var(--line)}.resource-feature-list>a{border-bottom:1px solid var(--line);grid-template-columns:.8fr 1.2fr;gap:20px;padding:21px 0;text-decoration:none;display:grid}.resource-feature-list>a:hover span{color:var(--accent)}.resource-feature-list small{color:var(--muted);font-size:.82rem}.operator-links{border-top:1px solid var(--line);align-content:start;display:grid}.operator-links a{border-bottom:1px solid var(--line);padding:18px 0;font-weight:650;text-decoration:none}.operator-links a:hover{color:var(--accent)}.conversion-band{width:var(--page);background:var(--accent);color:var(--on-accent);grid-template-columns:1fr auto;align-items:end;gap:40px;margin:clamp(80px,10vw,140px) auto;padding:clamp(40px,6vw,76px);display:grid}.conversion-band h2{margin-top:0}.conversion-band p{max-width:720px;margin-bottom:0}.breadcrumbs{width:var(--page);font-family:var(--font-mono);color:var(--muted);margin:0 auto;padding-top:22px;font-size:.68rem}.breadcrumbs ol{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.breadcrumbs li:not(:last-child):after{content:"/";margin-left:8px}.page-hero{min-height:min(760px, calc(100dvh - var(--header-height)));grid-template-columns:minmax(0,1.1fr) minmax(380px,.9fr);align-items:center;gap:clamp(42px,7vw,100px);padding:70px 0 90px;display:grid}.answer-block{width:var(--page);border-bottom:1px solid var(--line);grid-template-columns:.42fr 1.58fr;gap:40px;margin:0 auto;padding:clamp(64px,8vw,110px) 0;display:grid}.editorial-layout,.record-layout{width:var(--page);border-bottom:1px solid var(--line);grid-template-columns:minmax(0,1.45fr) minmax(260px,.55fr);gap:clamp(50px,8vw,130px);margin:0 auto;padding:clamp(72px,10vw,140px) 0;display:grid}.editorial-body section,.record-body section{padding:0 0 64px}.editorial-body h2,.record-body h2,.source-list h2,.download-list h2,.term-page h2,.legal-page h2{letter-spacing:-.04em;margin:0 0 20px;font-size:clamp(1.6rem,2.7vw,2.55rem);line-height:1.08}.editorial-body p,.record-body p,.legal-page p,.term-page p{max-width:760px;color:var(--muted);font-size:1.05rem}.editorial-body ul,.record-body ul{border-top:1px solid var(--line);margin:24px 0 0;padding:0;list-style:none}.editorial-body li,.record-body li{border-bottom:1px solid var(--line);padding:13px 8px 13px 28px;position:relative}.editorial-body li:before,.record-body li:before{content:"";background:var(--accent);width:8px;height:8px;position:absolute;top:22px;left:2px}.editorial-aside{align-self:start;gap:36px;display:grid;position:sticky;top:28px}.source-list,.download-list{border:1px solid var(--line);padding:22px}.source-list h2,.download-list h2{font-size:1.15rem}.source-list ul,.download-list{margin-top:0}.source-list ul{padding:0;list-style:none}.source-list li,.download-list a{border-top:1px solid var(--line);padding:12px 0;font-size:.84rem;display:block}.faq-list{border-top:1px solid var(--line);grid-template-columns:1fr 1fr;display:grid}.faq-list details{border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:24px}.faq-list summary{cursor:pointer;font-weight:680}.faq-list p{color:var(--muted)}.catalog-program{align-items:start}.catalog-program .button{margin-top:22px}.directory-note{width:var(--page);border-bottom:1px solid var(--line);grid-template-columns:180px 1fr;gap:20px 40px;margin:0 auto;padding:42px 0;display:grid}.directory-note strong{color:var(--accent);font-family:var(--font-mono);text-transform:uppercase;font-size:.72rem}.directory-note p{margin:0}.dataset-record-hero{grid-template-columns:minmax(0,1.25fr) minmax(320px,.75fr);gap:clamp(50px,8vw,120px);padding:100px 0;display:grid}.record-summary{border-top:1px solid var(--line);align-self:end;margin:0}.rights-notice{width:var(--page);border-bottom:1px solid var(--line);grid-template-columns:180px 1fr;gap:30px;margin:0 auto;padding:28px 0;display:grid}.rights-notice strong{color:var(--accent);font-family:var(--font-mono);text-transform:uppercase;font-size:.72rem}.rights-notice p{color:var(--muted);margin:0}.record-fields{margin:24px 0 0}.resource-index,.glossary-index,.principles-grid{width:var(--page);border-bottom:1px solid var(--line);margin:0 auto;padding:clamp(70px,9vw,130px) 0}.resource-index article,.glossary-index article{border-top:1px solid var(--line);grid-template-columns:90px 1fr;gap:30px;padding:32px 0;display:grid}.resource-index article>span,.glossary-index article>span{color:var(--accent);font-family:var(--font-mono);font-size:.72rem}.resource-index h2,.glossary-index h2{letter-spacing:-.04em;margin:3px 0 10px;font-size:clamp(1.5rem,3vw,3rem);line-height:1.04}.resource-index h2 a,.glossary-index h2 a{text-decoration:none}.resource-index h2 a:hover,.glossary-index h2 a:hover{color:var(--accent)}.resource-index p,.glossary-index p{max-width:790px;color:var(--muted);margin:0 0 5px}.resource-index-featured{background:var(--surface);padding:52px 30px!important}.article-shell,.term-page,.legal-page{width:var(--page);margin:0 auto}.article-header{max-width:1040px;padding:100px 0 64px}.article-header dl{gap:50px;margin-top:36px;display:flex}.article-header dl div{max-width:300px}.article-header dd{margin:5px 0 0}.article-answer,.article-shell .editorial-layout{width:100%}.term-page{padding:110px 0}.term-page>section{border-top:1px solid var(--line);grid-template-columns:.48fr 1.52fr;gap:40px;padding:46px 0;display:grid}.term-page>section:first-of-type{margin-top:70px}.term-definition p{color:var(--ink);letter-spacing:-.035em;font-size:clamp(1.5rem,3vw,2.6rem);line-height:1.27}.related-terms>div{flex-wrap:wrap;gap:10px;display:flex}.related-terms a{border:1px solid var(--line);padding:10px 12px;text-decoration:none}.principles-grid{border-left:1px solid var(--line);grid-template-columns:1.35fr .65fr;padding:0;display:grid}.principles-grid article{border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:270px;padding:34px}.principles-grid h2{letter-spacing:-.045em;margin:70px 0 12px;font-size:clamp(1.5rem,2.8vw,2.6rem);line-height:1.04}.principles-grid p{color:var(--muted)}.contact-layout{width:var(--page);grid-template-columns:minmax(0,.86fr) minmax(420px,1.14fr);gap:clamp(50px,8vw,120px);margin:0 auto;padding:90px 0 130px;display:grid}.contact-copy{align-self:start;position:sticky;top:32px}.contact-expectations{border-top:1px solid var(--line);margin-top:60px;padding-top:24px}.contact-expectations h2{font-size:1.45rem}.contact-expectations ol{color:var(--muted);padding-left:22px}.contact-expectations li{padding:6px 0}.contact-email{margin-top:38px}.inquiry-form{background:var(--surface);border:1px solid var(--line);grid-template-columns:1fr 1fr;gap:22px;padding:clamp(28px,5vw,58px);display:grid}.form-intro,.form-wide,.form-optional,.consent-field,.form-privacy,.form-submit,.form-status{grid-column:1/-1}.form-intro h2{letter-spacing:-.05em;margin:0;font-size:clamp(2rem,4vw,3.8rem);line-height:1}.form-intro p,.form-privacy{color:var(--muted)}.inquiry-form label:not(.consent-field){gap:7px;display:grid}.inquiry-form label>span,.form-optional summary{font-size:.8rem;font-weight:680}.inquiry-form input,.inquiry-form select,.inquiry-form textarea{border:1px solid var(--line);background:var(--bg);border-radius:0;width:100%;min-height:48px;padding:11px 12px}.inquiry-form textarea{resize:vertical;min-height:150px}.inquiry-form input:focus,.inquiry-form select:focus,.inquiry-form textarea:focus{border-color:var(--accent);outline:2px solid var(--accent);outline-offset:0}.form-optional{border-top:1px solid var(--line);padding-top:10px}.form-optional summary{cursor:pointer;padding:14px 0}.form-optional summary span{color:var(--muted);font-weight:400}.form-grid{grid-template-columns:1fr 1fr;gap:20px;padding-top:16px;display:grid}.consent-field{grid-template-columns:20px 1fr;align-items:start;gap:10px;font-size:.82rem;display:grid}.consent-field input{min-height:auto;margin-top:3px}.form-privacy,.form-status{margin:0;font-size:.77rem}.form-status{min-height:1.2em}.form-status-success{color:#18794e}.form-status-error{color:#c23831}.honeypot{width:1px;height:1px;position:absolute;left:-10000px;overflow:hidden}.legal-page{max-width:920px;padding:100px 0 130px}.legal-page>p:first-of-type:not(.eyebrow){color:var(--ink);margin-top:36px;font-size:1.3rem}.legal-page section{border-top:1px solid var(--line);padding:42px 0}.legal-page section:first-of-type{margin-top:70px}.site-footer{width:var(--page);border-top:1px solid var(--line);grid-template-columns:1.25fr .7fr .7fr .75fr 1.1fr;gap:36px;margin:0 auto;padding:68px 0 46px;font-size:.82rem;display:grid}.footer-brand p,.footer-legal{color:var(--muted)}.site-footer nav{align-content:start;gap:10px;display:grid}.site-footer nav strong{font-family:var(--font-mono);text-transform:uppercase;margin-bottom:6px;font-size:.68rem}.site-footer nav a{text-decoration:none}.site-footer nav a:hover{color:var(--accent)}@media (prefers-reduced-motion:no-preference){.home-hero-copy,.page-hero-copy,.trajectory-visual{animation:.52s both enter}.trajectory-visual{animation-delay:90ms}@keyframes enter{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}}@media (width<=980px){:root{--page:min(100% - 36px, 820px)}.desktop-nav{display:none}.mobile-nav{display:block;position:relative}.mobile-nav summary{cursor:pointer;padding:10px 0;font-size:.82rem;font-weight:700;list-style:none}.mobile-nav summary::-webkit-details-marker{display:none}.mobile-nav[open] nav{z-index:30;border:1px solid var(--line);background:var(--bg);width:min(300px,100vw - 36px);display:grid;position:absolute;top:44px;right:0}.mobile-nav nav a{border-bottom:1px solid var(--line);padding:14px 16px;text-decoration:none}.home-hero,.page-hero,.dataset-record-hero,.contact-layout{grid-template-columns:1fr}.home-hero{padding:64px 0}.page-hero{min-height:auto}.definition-section,.catalog-section,.resources-section,.operator-section,.about-statement,.operator-detail,.catalog-program,.proof-section,.editorial-layout,.record-layout{grid-template-columns:1fr}.editorial-aside,.contact-copy{position:static}.principles-grid,.site-footer{grid-template-columns:1fr 1fr}}@media (width<=680px){:root{--page:calc(100% - 28px);--header-height:64px}.wordmark{font-size:.9rem}.brand-mark{transform-origin:0;transform:scale(.86)}.home-hero-copy h1,.page-hero h1,.dataset-record-hero h1,.article-header h1,.contact-copy h1,.legal-page h1{font-size:clamp(2.7rem,15vw,4.3rem)}.home-hero-copy h1 span{white-space:normal}.home-hero,.page-hero,.dataset-record-hero,.article-header,.term-page,.legal-page,.contact-layout{padding-top:62px;padding-bottom:72px}.button-row,.button{width:100%}.trajectory-visual figcaption,.trajectory-frame>div{grid-template-columns:1fr}.trajectory-visual figcaption{gap:4px;display:grid}.trajectory-frame{min-height:104px}.trajectory-frame>div{gap:2px}.trajectory-frame:not(:last-child)>div:after{height:77px}.signal-grid,.reference-grid,.dataset-list,.faq-list,.principles-grid{grid-template-columns:1fr}.signal-grid{grid-template-areas:"primary""second""third""accent"}.signal-primary{min-height:280px!important}.signal-accent{grid-template-columns:1fr}.dataset-list .dataset-card:first-child{grid-column:auto}.dataset-card{padding:22px}.dataset-card dl div,.record-summary div,.record-fields div{grid-template-columns:1fr;gap:4px}.proof-list article,.resource-feature-list>a,.answer-block,.directory-note,.rights-notice,.term-page>section{grid-template-columns:1fr}.resource-index article,.glossary-index article{grid-template-columns:44px 1fr;gap:12px}.conversion-band{grid-template-columns:1fr;padding:30px}.inquiry-form,.form-grid{grid-template-columns:1fr}.inquiry-form{padding:22px}.form-wide,.form-optional,.consent-field,.form-privacy,.form-submit,.form-status{grid-column:auto}.article-header dl{gap:18px;display:grid}.site-footer{grid-template-columns:1fr;gap:34px}}.definition-title h2,.section-heading h2,.proof-statement h2,.catalog-intro h2,.resources-lead h2,.operator-section h2,.conversion-band h2,.about-statement h2,.operator-detail h2,.catalog-program h2,.contact-expectations h2,.dataset-card h2,.resource-index h2,.glossary-index h2,.editorial-body h2,.record-body h2,.term-page h2,.legal-page h2{font-family:var(--font-editorial);letter-spacing:-.035em;font-weight:400}.definition-section,.catalog-section,.resources-section,.operator-section,.about-statement,.operator-detail,.catalog-program,.sequence-section,.proof-section,.reference-section,.catalog-directory,.faq-section,.related-section,.editorial-layout,.record-layout{border-color:var(--line)}@supports (color:color-mix(in lab, red, red)){.definition-section,.catalog-section,.resources-section,.operator-section,.about-statement,.operator-detail,.catalog-program,.sequence-section,.proof-section,.reference-section,.catalog-directory,.faq-section,.related-section,.editorial-layout,.record-layout{border-color:color-mix(in srgb, var(--line) 78%, transparent)}}.definition-section{padding-top:clamp(110px,14vw,190px);padding-bottom:clamp(110px,14vw,190px)}.definition-title>span,.dataset-card-topline,.record-summary dt,.record-fields dt,.article-header dt,.proof-list strong,.directory-note strong,.rights-notice strong,.site-footer nav strong{letter-spacing:.025em;text-transform:none}.definition-copy>p:first-child,.answer-block>p:last-child{font-family:var(--font-editorial);letter-spacing:-.025em;font-weight:400}.sequence-section{position:relative}.sequence-section:before{content:"";z-index:-1;background-image:linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);position:absolute;inset:clamp(80px,10vw,140px) 0}@supports (color:color-mix(in lab, red, red)){.sequence-section:before{background-image:linear-gradient(color-mix(in srgb, var(--line) 32%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in srgb, var(--line) 32%, transparent) 1px, transparent 1px)}}.sequence-section:before{opacity:.42;background-size:64px 64px}.section-heading{margin-bottom:clamp(50px,7vw,86px)}.signal-grid{border-left:0;border-top-color:var(--ink);background:var(--bg)}@supports (color:color-mix(in lab, red, red)){.signal-grid{background:color-mix(in srgb, var(--bg) 76%, transparent)}}.signal-grid article{border-color:var(--line);padding:clamp(28px,4vw,54px)}@supports (color:color-mix(in lab, red, red)){.signal-grid article{border-color:color-mix(in srgb, var(--line) 80%, transparent)}}.signal-grid article{background:var(--bg)}@supports (color:color-mix(in lab, red, red)){.signal-grid article{background:color-mix(in srgb, var(--bg) 88%, transparent)}}.signal-primary{position:relative;background:var(--surface)!important;min-height:500px!important}@supports (color:color-mix(in lab, red, red)){.signal-primary{background:color-mix(in srgb, var(--surface) 72%, transparent)!important}}.signal-primary:before{content:"t₀";color:var(--muted);position:absolute;top:30px;right:34px}@supports (color:color-mix(in lab, red, red)){.signal-primary:before{color:color-mix(in srgb, var(--muted) 34%, transparent)}}.signal-primary:before{font-family:var(--font-editorial);font-size:clamp(5rem,11vw,11rem);line-height:1}.signal-accent{color:var(--bg);background:var(--ink)!important}.signal-accent p{color:var(--bg)}@supports (color:color-mix(in lab, red, red)){.signal-accent p{color:color-mix(in srgb, var(--bg) 72%, transparent)}}.signal-grid h3{max-width:520px;font-size:clamp(1.35rem,2.8vw,2.8rem);font-weight:550}.dataset-card{background:var(--surface);padding:clamp(26px,3vw,40px)}@supports (color:color-mix(in lab, red, red)){.dataset-card{background:color-mix(in srgb, var(--surface) 72%, var(--bg))}}.dataset-card{transition:border-color .18s,background-color .18s,transform .18s}.dataset-card:hover{border-color:var(--ink);background:var(--surface);transform:translateY(-3px)}.dataset-card-featured{background:var(--bg)}.dataset-card h2{font-size:clamp(2.35rem,4.3vw,4.8rem)}.proof-list article{padding:24px 0}.resource-feature-list>a,.operator-links a{transition:padding .18s,color .18s;position:relative}.resource-feature-list>a:hover,.operator-links a:hover{padding-left:8px;padding-right:8px}.conversion-band{background:var(--surface-strong);color:var(--ink);position:relative;overflow:hidden}.conversion-band:after{content:"";aspect-ratio:1;border:1px solid var(--accent);width:340px;position:absolute;top:-62%;right:-4%}@supports (color:color-mix(in lab, red, red)){.conversion-band:after{border:1px solid color-mix(in srgb, var(--accent) 56%, transparent)}}.conversion-band:after{pointer-events:none;border-radius:50%}.conversion-band p{color:var(--muted)}.conversion-band .button-light{border-color:var(--accent);background:var(--accent);color:var(--on-accent)}.page-hero{min-height:min(790px, calc(100dvh - var(--header-height)))}.page-hero .trajectory-visual{background:var(--surface)}@supports (color:color-mix(in lab, red, red)){.page-hero .trajectory-visual{background:color-mix(in srgb, var(--surface) 78%, transparent)}}.trajectory-visual{border-color:var(--line)}@supports (color:color-mix(in lab, red, red)){.trajectory-visual{border-color:color-mix(in srgb, var(--line) 82%, transparent)}}.trajectory-visual figcaption span{text-transform:none}.frame-index{border-radius:50%}.resource-index-featured,.source-list,.download-list,.inquiry-form{background:var(--surface)}@supports (color:color-mix(in lab, red, red)){.resource-index-featured,.source-list,.download-list,.inquiry-form{background:color-mix(in srgb, var(--surface) 66%, var(--bg))}}.site-footer{padding-top:86px;padding-bottom:60px}@media (prefers-reduced-motion:no-preference){.home-hero-image{animation:1.1s cubic-bezier(.2,.8,.2,1) both hero-image-enter}.home-hero-index{animation:.62s .26s both enter}@keyframes hero-image-enter{0%{opacity:.65;transform:scale(1.035)}to{opacity:1;transform:scale(1)}}}@media (width<=980px){.home-hero{width:calc(100vw - 24px);min-height:min(820px, calc(100dvh - var(--header-height) - 12px));padding:clamp(52px,9vw,78px)}.home-hero-index{bottom:clamp(32px,7vw,60px);right:clamp(32px,7vw,60px)}}@media (width<=680px){.home-hero{width:calc(100vw - 16px);min-height:calc(100svh - var(--header-height) - 8px);padding:48px 26px 38px}.home-hero:after{inset:10px}.home-hero-image{object-position:67% center}.home-hero-scrim{background:linear-gradient(90deg,#121716d1,#12171633),linear-gradient(#1217161a 32%,#121716d1 100%)}.home-hero-copy{align-self:end}.home-hero-copy h1{font-size:clamp(3.25rem,16vw,5.2rem);line-height:.94}.home-hero .hero-lede{margin-top:22px;font-size:1rem}.home-hero-index{display:none}.home-hero .button-row{margin-top:28px}.home-hero .button{min-height:46px}.signal-primary{min-height:320px!important}.conversion-band:after{right:-40%}}@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}}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}