:root{--navy:#0d354f;--ink:#203f54;--teal:#128f94;--muted:#627d8f;--line:#dce6eb;--pale:#f3f7f9;--white:#fff;--focus:#0c738b;font-family:Arial,Helvetica,sans-serif;color:var(--ink);font-synthesis:none;scroll-behavior:smooth}
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@media(max-width:1150px){.wrap{width:calc(100% - 48px)}.header-inner{width:calc(100% - 40px)}nav{gap:14px;font-size:10px}.brand-info{display:none}.hero{gap:38px}.grammar-guide{padding:22px}.formula-symbol{font-size:27px}.formula-symbol small{font-size:14px}.dataset-meta{font-size:10px}.detail-content{grid-template-columns:1.15fr 1fr;gap:25px}.about-grid{gap:55px}.docs-grid{gap:24px}.doc-block+.doc-block{padding-left:22px}}
@media(max-width:850px){.header-inner{min-height:77px}.brand img{height:63px;width:112px}.nav-toggle{display:block}nav{display:none;position:absolute;left:0;right:0;top:100%;background:white;border-bottom:1px solid var(--line);padding:14px 24px;box-shadow:0 8px 15px #16384d08;flex-wrap:wrap;gap:8px 24px;font-size:12px}nav.open{display:flex}.hero{grid-template-columns:1fr;gap:30px;padding-block:38px 43px}.hero-description{max-width:680px}.grammar-guide{max-width:680px}.formula-row{justify-content:space-around;padding-block:24px}.guide-views{gap:22px}.guide-foot{margin-top:19px}.section-heading{align-items:flex-start}.workspace-toolbar{align-items:flex-start}.dataset-meta{gap:7px}.separator{display:none}#dataset-counts{flex-basis:100%}.charts-grid{grid-template-columns:1fr}.chart-card+.chart-card{border-left:0;border-top:1px solid var(--line)}.chart-container>svg{max-width:700px;margin-inline:auto;min-width:320px}.chart-card{padding:17px 15px 20px}.component-key{max-width:650px;margin:auto}.chart-footnote{max-width:650px;margin:auto}.chart-context{max-width:650px;margin:0 auto 6px}.detail-content{grid-template-columns:1fr}.specific-effects{border-top:1px solid var(--line);padding-top:18px}.local-note{display:none}.docs-grid{grid-template-columns:1fr;gap:20px}.doc-block+.doc-block{border-left:0;border-top:1px solid var(--line);padding:21px 0 0}.doc-block p{max-width:760px}.doc-number{margin-bottom:9px}.docs-grid{margin-top:26px}.survey-card{gap:20px}.about-grid{grid-template-columns:1fr;gap:30px}.citation-actions .text-link{margin:0}.site-footer{font-size:9px}.site-footer>span:nth-child(2){display:none}}
@media(max-width:540px){.wrap{width:calc(100% - 32px)}.header-inner{width:calc(100% - 32px)}h1{font-size:40px;letter-spacing:-1.5px}h2{font-size:25px}.hero{padding-top:29px;gap:24px}.hero-description{font-size:14px}.eyebrow{font-size:9px;letter-spacing:1.5px}.signature-line{font-size:12px}.hero-actions{gap:20px;flex-wrap:wrap}.button{font-size:11px;padding:10px 14px}.grammar-guide{padding:21px 16px}.guide-header{font-size:8px;letter-spacing:1.1px}.formula-caption{font-size:8px}.formula-symbol{font-size:27px}.formula-symbol small{font-size:12px}.formula-plus{font-size:18px}.guide-views{gap:10px}.guide-views p{font-size:10px}.guide-views p span{font-size:9px}.view-letter{width:22px;height:22px}.guide-views>div{gap:7px}.section-heading{flex-direction:column;gap:15px}.workspace-toolbar{flex-direction:column;padding:13px 14px;gap:13px}.toolbar-actions{align-self:flex-end}.dataset-meta{font-size:10px}.chart-card{padding:13px 5px 17px}.chart-context{padding:0 10px}.panel-label{font-size:7px;letter-spacing:.6px}.chart-hint{font-size:8px}.chart-container>svg{min-width:300px}.component-key{padding:7px 14px}.component-key button{font-size:9px}.detail-panel{padding:19px 17px}.detail-heading{align-items:flex-start;flex-direction:column;gap:14px}.select-component-label{width:100%;justify-content:space-between}.detail-heading h3{font-size:21px}.effect-metrics{gap:7px}.effect-metrics span{font-size:8px}.effect-metrics strong{font-size:23px}.effect-metrics>div{padding:0}.detail-content{gap:22px}.workspace{padding-bottom:35px}.data-section{padding-block:34px 39px}.section-lead{font-size:12px}.data-tabs{padding:0 8px;gap:0}.data-tabs button{padding:13px 12px;font-size:11px}.data-settings{padding:17px 15px 0}.settings-main{gap:13px}.settings-main>label:first-child{flex-direction:column;align-items:flex-start;gap:4px;width:100%}.settings-main input[type=text]{width:100%}.entry-panel{padding:18px 15px 20px}.upload-zone{padding-block:25px}.upload-zone strong{font-size:12px}.upload-zone span{font-size:10px}.template-row{align-items:flex-start;flex-direction:column;gap:12px}.entry-actions{align-items:flex-start;flex-direction:column;gap:14px}.entry-actions .button{align-self:flex-end}.manual-heading{align-items:flex-start;flex-direction:column;gap:12px}.manual-heading .button{align-self:flex-end}.field-hint{display:block;margin:8px 0}.validation{padding:12px 15px;font-size:11px}.docs-section{padding-block:32px 38px}.docs-grid{gap:17px}.doc-block h3{font-size:17px}.method-note{padding:18px 16px;gap:12px}.method-note svg{width:21px}.survey-card{flex-direction:column;gap:13px;padding:18px}.about-section{padding:32px 0}.citation-actions{gap:8px}.site-footer{padding-block:18px}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*{transition:none!important}}

/* Distinct pages; the landing page gives the visuals room to lead. */
.page-home .header-inner,.page-code .header-inner,.page-survey .header-inner,.page-documentation .header-inner,.page-about .header-inner,.page-platform .header-inner{min-height:86px}
.home-hero{text-align:center;padding-block:52px 0}.home-hero>.eyebrow{justify-content:center;font-size:10px;letter-spacing:2px;margin-bottom:17px}.home-hero h1{font-size:clamp(42px,4.6vw,61px);letter-spacing:-2.3px;line-height:1.04;margin-bottom:20px}.home-hero h1 span,.page-title span{color:var(--teal)}.home-intro{max-width:660px;margin:0 auto;font-size:15px;color:var(--muted);line-height:1.7}.home-actions{display:flex;justify-content:center;align-items:center;gap:25px;margin-top:25px}.signature-visual{margin:40px 0 0;padding:17px;background:#f0f6f8;border:1px solid #dce8ed;border-radius:8px}.visual-caption{display:flex;align-items:center;justify-content:space-between;gap:15px;text-align:left;padding:2px 12px 17px;font-size:8px;letter-spacing:1.4px;font-weight:700;color:var(--muted)}.signature-visual img{display:block;width:100%;height:auto}.signature-visual figcaption{font-size:11px;color:var(--muted);padding:12px 15px 0;line-height:1.7}.routes-section{padding-block:46px 54px}.routes-heading{text-align:center;margin-bottom:27px}.routes-heading h2{font-size:25px}.routes-heading p{font-size:12px;color:var(--muted);margin:10px 0 0}.route-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.route-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-top:3px solid #abc3d2;border-radius:5px;padding:24px 25px;transition:background .15s,border-color .15s}.route-card:hover{background:#f6fafb;border-color:#93b7c7}.route-card.route-primary{border-top-color:var(--teal);background:#f3f9f8}.route-icon{width:43px;height:43px;color:#467d99;display:block;margin-bottom:19px}.route-primary .route-icon{color:var(--teal)}.route-icon svg{width:100%;height:100%}.route-title{display:flex;justify-content:space-between;align-items:center;gap:10px}.route-title h3{font-size:18px}.route-title>span{font-size:17px;color:#80a0b1}.route-card p{font-size:12px;line-height:1.75;color:var(--muted);margin:13px 0 21px;max-width:320px;flex:1}.route-action{border-top:1px solid var(--line);padding-top:14px;display:flex;align-items:center;justify-content:space-between;font-size:11px;font-weight:600;color:var(--teal)}.development-label{display:inline-block;background:#eef2f4;border:1px solid #d8e1e6;border-radius:4px;padding:3px 8px;font-size:9px;font-weight:600;color:#687d8b;letter-spacing:.3px;white-space:nowrap}.development-label.prominent{font-size:10px;padding:5px 11px;margin-bottom:18px}
.page-platform .workspace{padding-top:38px}.workspace-title{font-size:30px;letter-spacing:-.8px;margin:0}.page-platform .data-section{padding-bottom:44px}.page-intro{padding-block:45px 35px}.page-title{font-size:clamp(32px,3.7vw,46px);line-height:1.15;letter-spacing:-1.3px;margin:0 0 19px}.page-lead{font-size:15px;color:var(--muted);max-width:660px;line-height:1.8;margin:0}.code-section{padding-bottom:52px}.code-downloads{display:grid;grid-template-columns:1fr 1fr;gap:26px}.download-card{position:relative;border:1px solid var(--line);border-radius:6px;padding:31px;background:#f7fafb}.download-card:first-child{border-top:3px solid var(--teal);padding-top:29px}.download-card .eyebrow{font-size:8px;letter-spacing:1.4px;margin-top:25px}.download-icon{display:block;width:49px;height:49px;color:var(--teal)}.download-icon svg{width:100%;height:100%}.file-icon{display:flex;align-items:center;justify-content:center;font-family:ui-monospace,Consolas,monospace;font-size:22px;font-weight:700;color:#668ba4;border:1px solid #adc4d2;border-radius:5px}.download-card h2{font-size:23px;letter-spacing:-.5px;margin-bottom:14px}.download-card>p:not(.eyebrow){font-size:13px;color:var(--muted);max-width:440px;line-height:1.8;min-height:47px}.download-card .button{margin-top:12px}.download-hint{font-size:10px;display:block;color:var(--muted);margin-top:11px}.code-quickstart{display:grid;grid-template-columns:1fr 1fr;gap:45px;padding-top:39px;align-items:center}.code-quickstart h2{font-size:25px;margin-bottom:14px}.code-quickstart p{font-size:12px;color:var(--muted);line-height:1.85}.code-quickstart .entry-hint{font-size:10px}.code-terminal{background:#11344a;color:#d6e4eb;border-radius:6px;padding:24px;overflow:auto}.terminal-label{font-size:9px;color:#9cb8c9;letter-spacing:.8px}.code-terminal pre{font-size:12px;line-height:2;padding:17px 0;margin:0;white-space:pre}.code-terminal code{font-size:inherit;background:transparent;color:#ecf6fa;padding:0}.terminal-output{font-size:9px;border-top:1px solid #426175;padding-top:13px;display:flex;justify-content:space-between;gap:20px;color:#9acdcf}.page-links{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-top:27px}.page-documentation .docs-section{padding-top:45px;border-top:0}.page-documentation .page-title{font-size:36px}.page-about .about-section{border-top:0;min-height:calc(100vh - 144px);display:flex;align-items:center}.page-about .about-grid{width:min(1280px,calc(100% - 80px))}.page-about .page-title{font-size:43px}
.survey-intro{display:grid;grid-template-columns:1fr 1fr;gap:75px;align-items:center;padding-block:53px 51px}.survey-intro-copy>.eyebrow{font-size:9px}.survey-intro .page-title{font-size:54px;line-height:1.08}.survey-intro .page-lead{font-size:15px;margin-bottom:15px}.survey-intro-copy>p:not(.eyebrow):not(.page-lead){font-size:12px;color:var(--muted);max-width:485px}.survey-intro .home-actions{justify-content:flex-start;flex-wrap:wrap;gap:18px}.survey-illustration{background:#edf5f7;border-radius:7px;padding:30px;display:flex;justify-content:center}.survey-preview-card{width:100%;max-width:425px;border:1px solid #c8dce5;background:white;border-radius:7px;padding:22px}.preview-topline{display:flex;align-items:center;gap:13px;color:var(--muted);font-size:8px;letter-spacing:1.4px;font-weight:700;margin-bottom:20px}.preview-topline>span:first-child{width:31px;height:31px;flex-shrink:0;color:#7ba3b7}.preview-topline svg{width:100%;height:100%}.street-illustration{border-radius:4px;overflow:hidden;margin-bottom:21px}.street-illustration svg{width:100%;height:auto}.preview-question-line{height:6px;background:#dce7ec;border-radius:2px;width:80%;margin:8px 0}.preview-question-line.short{width:55%;height:5px}.preview-rating{display:flex;justify-content:space-between;margin:23px 0 15px;max-width:290px;gap:12px}.preview-rating span{width:27px;height:27px;border:1px solid #bbd4df;background:#f8fbfc;border-radius:50%}.survey-preview-card p{font-size:8px;text-align:center;color:#8197a4;margin:18px 0 0;line-height:1.6}.survey-plan{border-top:1px solid var(--line);padding-block:35px 49px}.survey-plan h2{font-size:26px}.survey-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.survey-feature-grid article+article{border-left:1px solid var(--line);padding-left:29px}.survey-feature-grid h3{font-size:17px;margin-bottom:12px}.survey-feature-grid p{font-size:12px;color:var(--muted);line-height:1.85}.survey-status-note{background:#f5f8fa;border-left:2px solid #96b3c2;padding:17px 21px;margin-top:25px;display:flex;align-items:flex-start;gap:20px}.survey-status-note p{font-size:11px;color:var(--muted);line-height:1.85;margin:0}
@media(max-width:1000px){.route-card{padding:20px}.route-title h3{font-size:16px}.code-quickstart{gap:30px}.survey-intro{gap:35px}.survey-illustration{padding:20px}.survey-intro .page-title{font-size:47px}.page-about .about-grid{width:calc(100% - 48px)}}
@media(max-width:850px){.home-hero{padding-top:35px}.signature-visual{margin-top:30px;padding:12px}.route-grid{gap:15px}.route-card{padding:18px 15px}.route-title h3{font-size:15px}.route-card p{font-size:11px}.route-icon{width:36px;height:36px;margin-bottom:16px}.visual-caption{font-size:7px;letter-spacing:.8px;padding:2px 6px 12px}.code-downloads{gap:20px}.download-card{padding:24px}.download-card:first-child{padding-top:22px}.download-card h2{font-size:21px}.code-quickstart{grid-template-columns:1fr;gap:18px;padding-top:30px}.code-quickstart>div:first-child{max-width:650px}.survey-intro{grid-template-columns:1fr;gap:27px;padding-block:35px}.survey-intro-copy{max-width:650px}.survey-illustration{max-width:620px;width:100%}.survey-preview-card{max-width:430px}.survey-feature-grid{grid-template-columns:1fr;gap:20px}.survey-feature-grid article+article{border-left:0;border-top:1px solid var(--line);padding:20px 0 0}.survey-feature-grid p{margin-bottom:0}.page-about .about-section{min-height:auto;padding-block:36px}}
@media(max-width:600px){.route-grid{grid-template-columns:1fr;gap:15px}.route-card{padding:22px;display:grid;grid-template-columns:43px 1fr;gap:0 17px}.route-icon{grid-row:1/4;margin:0;width:39px;height:39px}.route-title h3{font-size:17px}.route-card p{margin:9px 0 17px;font-size:12px;max-width:none}.route-action{grid-column:2}.code-downloads{grid-template-columns:1fr}.download-card>p:not(.eyebrow){min-height:0}.page-links{flex-direction:column;gap:17px}.survey-status-note{flex-direction:column;gap:11px}.visual-caption{flex-direction:column;align-items:center;gap:8px}.signature-visual{padding:12px 5px}.signature-visual figcaption{font-size:10px;padding:12px 10px 0}}
@media(max-width:540px){.home-hero h1{font-size:43px;letter-spacing:-1.6px}.home-hero>.eyebrow{font-size:8px;letter-spacing:1.5px}.home-intro{font-size:13px;max-width:340px}.home-actions{flex-wrap:wrap;gap:17px;margin-top:22px}.home-actions .text-link{font-size:11px}.home-hero{padding-top:29px}.routes-section{padding-block:31px 37px}.routes-heading h2{font-size:23px}.routes-heading p{font-size:11px}.page-title{font-size:34px;letter-spacing:-1px}.page-intro{padding-block:30px 25px}.page-lead{font-size:13px}.page-platform .workspace{padding-top:27px}.workspace-title{font-size:25px}.page-documentation .docs-section{padding-top:29px}.page-documentation .page-title{font-size:30px}.download-card{padding:23px}.download-card:first-child{padding-top:21px}.download-card h2{font-size:23px}.code-terminal{padding:20px 16px}.code-terminal pre{font-size:10px}.code-section{padding-bottom:38px}.survey-intro .page-title{font-size:45px}.survey-intro .page-lead{font-size:14px}.survey-illustration{padding:18px 14px}.survey-preview-card{padding:19px}.survey-plan h2{font-size:24px}.survey-plan{padding-block:28px 35px}.survey-feature-grid{gap:16px}.page-about .about-grid{width:calc(100% - 32px)}.page-about .page-title{font-size:36px}.page-home .brand-info{display:block;font-size:9px}.page-home .brand-info .version{display:block;max-width:max-content;margin-bottom:5px}}