:root{--bg: #f4ede1;--surface-1: #ece2d0;--surface-2: #e2d5bd;--ink: #241f1a;--ink-muted: #6b6153;--accent: #b3311f;--accent-support: #2b5a63;--success: #3f7a4e;--radius-control: 4px;--radius-panel: 10px;--shadow: 0 2px 8px rgba(36, 31, 26, .12);--shadow-raised: 0 6px 20px rgba(36, 31, 26, .16);--hairline: rgba(36, 31, 26, .14);--font-display: "Fraunces", Georgia, "Times New Roman", serif;--font-ui: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;--sp-1: 8px;--sp-2: 16px;--sp-3: 24px;--sp-4: 32px;--sp-6: 48px;color-scheme:light}*{box-sizing:border-box}html,body{margin:0;min-height:100%}body{background-color:var(--bg);background-image:radial-gradient(120% 80% at 50% -10%,rgba(255,250,240,.7),transparent 60%),radial-gradient(140% 120% at 100% 120%,rgba(43,90,99,.06),transparent 55%),repeating-linear-gradient(0deg,rgba(36,31,26,.015) 0,rgba(36,31,26,.015) 1px,transparent 1px,transparent 3px);color:var(--ink);font-family:var(--font-ui);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}.app{display:grid;grid-template-rows:auto 1fr;gap:var(--sp-3);min-height:100vh;max-width:1440px;margin:0 auto;padding:var(--sp-3) var(--sp-4) var(--sp-4)}.masthead{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--sp-3);padding-bottom:var(--sp-2);border-bottom:2px solid var(--ink)}.masthead__brand{min-width:0}.wordmark{margin:0;font-family:var(--font-display);font-weight:900;font-size:clamp(2rem,5vw,3.05rem);line-height:1;letter-spacing:-.01em;color:var(--ink)}.wordmark__letter{display:inline-block;white-space:pre}.wordmark__letter--intro{opacity:0;animation:letter-set .52s cubic-bezier(.2,.8,.2,1) both}@keyframes letter-set{0%{opacity:0;transform:translateY(.18em);font-stretch:60%}60%{opacity:1;transform:translateY(-.03em)}to{opacity:1;transform:translateY(0)}}.strapline{margin:var(--sp-1) 0 0;font-size:1rem;font-style:italic;color:var(--ink-muted)}.masthead__actions{display:flex;align-items:center;gap:var(--sp-1);flex-shrink:0}.status{font-size:.8125rem;color:var(--success);min-width:0;font-variant:small-caps;letter-spacing:.03em}.btn{font-family:var(--font-ui);font-size:.875rem;font-weight:600;padding:10px 16px;min-height:44px;border-radius:var(--radius-control);cursor:pointer;transition:transform .15s ease-out,background-color .15s ease-out,box-shadow .15s ease-out,border-color .15s ease-out}.btn--ghost{background:transparent;color:var(--ink);border:1px solid var(--hairline)}.btn--ghost:hover{border-color:var(--ink);background:#241f1a0a}.btn--solid{background:var(--accent);color:#fdf6ea;border:1px solid transparent;box-shadow:var(--shadow)}.btn--solid:hover{background:#9a2a1a;box-shadow:var(--shadow-raised)}.btn:active{transform:translateY(1px);box-shadow:none}.btn:focus-visible,.preset:focus-visible,.control__input:focus-visible{outline:2px solid var(--accent-support);outline-offset:2px}.stage{display:grid;grid-template-columns:1fr 320px;gap:var(--sp-4);align-items:stretch;min-height:0}.chart-panel{display:flex;flex-direction:column;gap:var(--sp-2);min-width:0}.chart{position:relative;flex:1 1 auto;min-height:65vh;background:var(--surface-1);border:1px solid var(--hairline);border-radius:var(--radius-panel);box-shadow:var(--shadow);overflow:hidden}.chart__canvas{display:block;width:100%;height:100%}.chart__axis{position:absolute;top:var(--sp-2);left:var(--sp-2);pointer-events:none}.chart__axis-unit{font-size:.8125rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-muted);background:#f4ede1b8;padding:2px 8px;border-radius:var(--radius-control)}.caption{margin:0;max-width:70ch;font-family:var(--font-display);font-size:1.25rem;font-weight:400;line-height:1.35;color:var(--ink)}.caption:before{content:"";display:inline-block;width:28px;height:3px;margin-right:10px;vertical-align:middle;background:var(--accent)}.rail{display:flex;flex-direction:column;gap:var(--sp-3);padding:var(--sp-3);background:var(--surface-1);border:1px solid var(--hairline);border-radius:var(--radius-panel);box-shadow:var(--shadow)}.rail__title{margin:0 0 var(--sp-2);font-family:var(--font-ui);font-size:.75rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-muted)}.presets__row{display:flex;flex-wrap:wrap;gap:var(--sp-1)}.preset{font-family:var(--font-ui);font-size:.8125rem;font-weight:500;padding:8px 12px;min-height:44px;color:var(--ink);background:var(--surface-2);border:1px solid transparent;border-radius:var(--radius-control);cursor:pointer;transition:transform .15s ease-out,background-color .15s ease-out,border-color .15s ease-out}.preset:hover{border-color:var(--ink-muted)}.preset--active{background:var(--ink);color:var(--bg);border-color:var(--ink)}.controls{display:flex;flex-direction:column;gap:var(--sp-3)}.control__head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:6px}.control__label{font-size:.9375rem;font-weight:600}.control__value{font-family:var(--font-display);font-size:1.25rem;font-weight:600;color:var(--accent);font-variant-numeric:tabular-nums}.control__input{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:44px;background:transparent;cursor:pointer}.control__input::-webkit-slider-runnable-track{height:6px;border-radius:3px;background:var(--surface-2);border:1px solid var(--hairline)}.control__input::-moz-range-track{height:6px;border-radius:3px;background:var(--surface-2);border:1px solid var(--hairline)}.control__input::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:24px;height:24px;margin-top:-10px;border-radius:50%;background:var(--accent);border:2px solid var(--bg);box-shadow:var(--shadow);transition:transform .12s ease-out,box-shadow .12s ease-out}.control__input::-moz-range-thumb{width:24px;height:24px;border-radius:50%;background:var(--accent);border:2px solid var(--bg);box-shadow:var(--shadow)}.control__input:hover::-webkit-slider-thumb,.control__input:active::-webkit-slider-thumb{transform:scale(1.12);box-shadow:var(--shadow-raised)}.control__input:active::-moz-range-thumb{transform:scale(1.12)}.readout{display:grid;gap:var(--sp-2);padding-top:var(--sp-2);border-top:1px solid var(--hairline)}.readout__cell{display:flex;align-items:baseline;justify-content:space-between;gap:var(--sp-2)}.readout__label{font-size:.8125rem;color:var(--ink-muted)}.readout__value{font-family:var(--font-display);font-size:1.0625rem;font-weight:600;text-align:right;font-variant-numeric:tabular-nums}.rail__actions{margin-top:auto}.rail__actions .btn{width:100%}@media(max-width:900px){.app{padding:var(--sp-2) var(--sp-2) var(--sp-3);gap:var(--sp-2)}.masthead{flex-wrap:wrap;align-items:center}.stage{grid-template-columns:1fr;gap:var(--sp-2)}.chart{min-height:50vh}.rail{padding:var(--sp-2)}}@media(max-width:480px){.masthead__actions{width:100%;justify-content:flex-start}.caption{font-size:1.0625rem}}.explainer{border-top:2px solid var(--ink);padding:var(--sp-6) var(--sp-4)}.explainer__inner{max-width:68ch;margin:0 auto}.explainer__title{font-family:var(--font-display);font-weight:600;font-size:1.75rem;line-height:1.15;margin:var(--sp-4) 0 var(--sp-2)}.explainer__inner>.explainer__title:first-child{margin-top:0}.explainer p{margin:0 0 var(--sp-2);color:var(--ink)}.faq{margin:0}.faq__q{font-weight:600;font-size:1.0625rem;margin-top:var(--sp-3);color:var(--ink)}.faq__a{margin:var(--sp-1) 0 0;color:var(--ink-muted)}.site-footer{display:flex;flex-wrap:wrap;gap:var(--sp-3);justify-content:center;padding:var(--sp-4);border-top:1px solid var(--hairline);font-size:.875rem}.site-footer__link{color:var(--accent);text-decoration:none;font-weight:600;border-bottom:1px solid transparent;transition:border-color .15s ease-out}.site-footer__link:hover,.site-footer__link:focus-visible{border-bottom-color:var(--accent)}.site-footer__link:focus-visible{outline:2px solid var(--accent-support);outline-offset:3px}@media(prefers-reduced-motion:reduce){.wordmark__letter--intro{animation:none;opacity:1}*{transition-duration:.01ms!important}}