@font-face{font-family:Inter;src:url('fonts/inter-latin.woff2') format('woff2');font-style:normal;font-weight:400 700;font-display:swap}
@font-face{font-family:'Source Serif 4';src:url('fonts/source-serif-4-latin.woff2') format('woff2');font-style:normal;font-weight:400 600;font-display:swap}
:root{--paper:#faf9f5;--ink:#141413;--muted:#5b5b53;--line:#e3e0d6;--panel:#f0eee6;--accent:#914a33;--sans:Inter,Arial,sans-serif;--serif:'Source Serif 4',Georgia,serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:var(--paper);color:var(--ink);font:18px/1.7 var(--sans);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
a:hover{color:var(--accent)}
a:focus-visible,input:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:4px}
h1,h2,h3,h4,p{margin:0}
h1,h2{font-family:var(--serif);font-weight:500;letter-spacing:-.025em;line-height:1.15}
p+p{margin-top:1em}
img{display:block;max-width:100%;height:auto}
strong{font-weight:600}
.wrap{width:min(1120px,calc(100% - 64px));margin-inline:auto}
.column{width:min(720px,calc(100% - 48px));margin-inline:auto}

/* Header */
.site-header{display:flex;align-items:center;gap:32px;min-height:84px}
.identity{font-family:var(--serif);font-size:24px;font-weight:500;letter-spacing:-.02em;line-height:1.1;white-space:nowrap}
.identity span{display:block;font-family:var(--sans);font-size:13px;font-weight:400;color:var(--muted);letter-spacing:0;margin-top:5px}
.site-header nav{display:flex;margin-left:auto;gap:28px;font-size:15px;white-space:nowrap}
.site-header nav a{color:var(--muted)}
.site-header nav a:hover{color:var(--ink)}
.button{display:inline-flex;align-items:center;justify-content:center;font-size:15px;line-height:1.4;font-weight:500;padding:12px 20px;border:1px solid transparent;border-radius:8px;transition:background .15s,color .15s}
.primary{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.primary:hover{background:#3a3a33;border-color:#3a3a33;color:var(--paper)}
.secondary{background:#eeece4;border-color:#dcd8cd}
.secondary:hover{background:#e3e0d5;color:var(--ink)}
.header-link{padding:9px 16px;white-space:nowrap}
.skip-link{position:absolute;top:-100px;left:16px;background:var(--ink);color:var(--paper);padding:10px 16px;z-index:10}
.skip-link:focus{top:16px}

/* Hero */
.hero{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);align-items:center;gap:48px;padding-block:56px 96px}
.hero h1{font-size:clamp(42px,5vw,64px);line-height:1.08;letter-spacing:-.03em}
.lead{font-size:21px;line-height:1.55;max-width:600px;margin-top:26px;color:#2b2b27}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}
.project-status{font-size:15px;color:var(--muted);margin-top:24px}
.hero-mascot{position:relative;isolation:isolate;margin:0}
.hero-mascot::before{content:"";position:absolute;z-index:-1;inset:15% 6% 5%;background:#eeeade;border-radius:48% 48% 43% 43%}
.hero-mascot img{width:100%;max-width:390px;margin-inline:auto}

/* Sections: spacing separates ideas, not boxes and rules */
.section{padding-block:0 104px}
.section h2{font-size:clamp(32px,4.2vw,42px)}
.intro{font-size:20px;line-height:1.65;color:#2b2b27;margin-top:22px}
.subhead{font-family:var(--sans);font-size:20px;font-weight:600;letter-spacing:-.01em;line-height:1.4;margin:52px 0 14px}
.subhead+p,.column>p{color:#2b2b27}

/* Steps */
.steps{list-style:none;padding:0;margin:8px 0 0;display:grid;gap:28px}
.steps li{display:grid;grid-template-columns:44px 1fr;gap:20px;align-items:start}
.step-number{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--panel);font-family:var(--serif);font-size:21px;color:var(--accent)}
.steps h4{font-size:19px;font-weight:600;line-height:1.4;margin-top:8px}
.steps p{color:var(--muted);margin-top:6px;font-size:17px;line-height:1.65}
.steps.plain{margin-top:30px}

/* Results: one tinted band, one featured card */
.results-section{background:var(--panel);padding-block:96px 104px;margin-bottom:104px}
.explorer{background:var(--paper);border:1px solid #dedacd;border-radius:16px;margin-top:36px;padding:32px 36px}
.capacity-controls label{font-size:17px;font-weight:600;display:block}
.capacity-value{display:flex;align-items:baseline;gap:16px;margin:10px 0 14px}
.capacity-value output{font-family:var(--serif);font-size:52px;line-height:1.1;letter-spacing:-.02em}
.capacity-value span{font-size:15px;color:var(--muted)}
input[type=range]{width:100%;height:32px;accent-color:var(--accent);cursor:pointer;display:block;margin:0}
.range-labels{display:flex;justify-content:space-between;font-size:14px;color:var(--muted);padding-inline:4px}
.result-question{font-size:17px;font-weight:600;margin-top:34px;padding-top:30px;border-top:1px solid var(--line)}
.bars{display:grid;gap:20px;margin-top:20px}
.bar-label{display:flex;justify-content:space-between;align-items:baseline;gap:16px;margin-bottom:8px;font-size:17px}
.bar-label strong{font-family:var(--serif);font-size:32px;font-weight:500;letter-spacing:-.02em;font-variant-numeric:tabular-nums;line-height:1.1}
.bar-track{height:18px;background:#ece9df;border-radius:9px;overflow:hidden}
.bar-fill{height:100%;border-radius:9px;transition:width .35s ease}
.bar-fill.tool{background:var(--accent)}
.bar-fill.simple{background:#a9a597}
.result-story{font-size:19px;line-height:1.6;margin-top:28px;color:var(--ink)}
.result-story strong{color:var(--accent)}
.note,.data-status{font-size:15px;color:var(--muted);margin-top:20px}
.data-status:empty{display:none}
.data-status{color:var(--accent)}

/* Optional detail: one calm group */
.more{margin-top:12px}
.detail-row{border-bottom:1px solid #d5d1c5}
.more .detail-row:first-of-type{border-top:1px solid #d5d1c5}
.detail-row summary{cursor:pointer;font-size:17px;font-weight:500;padding:20px 4px;list-style-position:inside}
.detail-row summary::marker{color:var(--muted)}
.detail-row summary:hover{color:var(--accent)}
.detail-body{padding:0 4px 28px;font-size:16px;color:var(--muted);line-height:1.7}
.detail-body h4{font-size:17px;color:var(--ink);margin:28px 0 8px}
.detail-body strong{color:var(--ink)}
.inline-link{font-size:15px;text-decoration:underline;text-underline-offset:4px;color:var(--ink);display:inline-block;margin-top:16px}
.figure-grid{display:grid;gap:20px;margin-block:24px 8px}
.figure-grid figure{padding:16px;margin:0;background:#fff;border:1px solid var(--line);border-radius:10px}
.figure-grid figcaption{font-size:14px;line-height:1.6;padding-top:12px;margin-top:12px;border-top:1px solid var(--line)}
pre{padding:20px;background:#e9e5da;border-radius:10px;font-size:14px;line-height:1.8;overflow:auto;color:var(--ink);margin:16px 0 0}

/* Next steps and files */
.reading-links{font-size:16px;color:var(--muted);margin-top:36px}
.reading-links a{text-decoration:underline;text-underline-offset:4px;color:var(--ink)}
.resource-links{margin-top:32px}
.resource-links a{display:block;border-top:1px solid var(--line);padding-block:26px}
.resource-links a:last-child{border-bottom:1px solid var(--line)}
.resource-links h3{font-family:var(--serif);font-size:26px;font-weight:500;letter-spacing:-.015em;line-height:1.25}
.resource-links p{font-size:16px;line-height:1.65;color:var(--muted);margin-top:8px}
.site-footer{display:flex;justify-content:space-between;gap:24px;padding-block:28px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}

@media(max-width:860px){
  .wrap{width:calc(100% - 40px)}
  .site-header{flex-wrap:wrap;justify-content:space-between;gap:14px;padding-block:18px;min-height:0}
  .site-header nav{order:3;width:100%;margin-left:0;justify-content:space-between;gap:12px;font-size:14px;border-top:1px solid var(--line);padding-top:12px}
  .hero{grid-template-columns:1fr;gap:28px;padding-block:36px 72px}
  .hero-mascot{width:220px;justify-self:center}
  .lead{font-size:19px}
}
@media(max-width:600px){
  body{font-size:17px}
  .column{width:calc(100% - 40px)}
  .section{padding-bottom:80px}
  .intro{font-size:18px}
  .subhead{margin-top:44px;font-size:19px}
  .results-section{padding-block:72px 80px;margin-bottom:80px}
  .explorer{padding:24px 20px}
  .capacity-value output{font-size:44px}
  .bar-label strong{font-size:28px}
  .steps li{grid-template-columns:36px 1fr;gap:14px}
  .step-number{width:36px;height:36px;font-size:18px}
  .steps h4{margin-top:5px}
  .resource-links h3{font-size:23px}
  .site-footer{flex-direction:column;gap:8px}
}
@media(max-width:380px){.identity{font-size:21px}.hero h1{font-size:36px}.site-header nav{font-size:13px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button,.bar-fill{transition:none}}