:root{--bg:#f5f4ed;--surface:#faf9f5;--warm:#e8e6dc;--ink:#141413;--text:#3d3d3a;--muted:#78776f;--line:#e3e1d7;--accent:#c96442;--focus:#3898ec}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font-family:Arial,system-ui,sans-serif;line-height:1.55}button,input,select,textarea{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid color-mix(in srgb, var(--focus) 35%, transparent);outline-offset:2px}.container{width:min(1200px,100% - 32px);margin:auto}.hero{grid-template-columns:1fr 380px;align-items:start;gap:48px;padding:34px 0 28px;display:grid}.brand{align-items:center;gap:12px;padding-top:10px;display:flex}.brand-mark{background:var(--ink);width:42px;height:42px;color:var(--bg);border-radius:50%;place-items:center;font:24px Georgia,serif;display:grid}.brand h1,h2{letter-spacing:-.03em;margin:0;font-family:Georgia,serif;font-weight:500}.brand h1{font-size:28px}.brand p{color:var(--muted);text-transform:uppercase;letter-spacing:.1em;margin:0;font-size:12px}.date-card,.form-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:0 5px 24px #0000000c}.date-card{grid-template-columns:1fr auto;gap:8px 18px;padding:20px;display:grid}.date-card h2{font-size:20px}.eyebrow,.badge{color:var(--muted);letter-spacing:.09em;text-transform:uppercase;font-size:11px}.date-card p{color:var(--muted);grid-column:1/-1;margin:6px 0 0;font-size:13px}.date-card strong{color:var(--text)}.date-controls{gap:8px;display:flex}.date-controls button,.stepper button{border:1px solid var(--line);width:42px;height:42px;color:var(--ink);background:var(--surface);border-radius:8px;font-size:20px}.date-controls button:hover,.stepper button:hover{background:var(--warm)}.progress{background:var(--warm);border-radius:99px;grid-column:1/-1;height:7px;overflow:hidden}.progress span{border-radius:inherit;background:var(--text);height:100%;transition:width 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0);border-radius:50%;place-items:center;width:100px;display:grid}.ring:before{content:"";aspect-ratio:1;background:var(--ink);border-radius:50%;width:78px;position:absolute}.ring span{z-index:1;font:22px Georgia,serif}.efficiency div:last-child span{color:#c5c2b8;font-size:12px}.efficiency strong{font:28px Georgia,serif;display:block}.summary dl{margin:0}.summary dl div{grid-template-columns:1fr auto;gap:12px;padding:9px 0;font-size:14px;display:grid}.summary dt{color:#c5c2b8}.summary dd{margin:0;font-family:ui-monospace,monospace}.summary .total{border-top:1px solid #ffffff21;margin-top:4px;padding-top:14px}.summary .total dd{font-weight:700}.interpretation{background:#ffffff12;border-radius:8px;padding:12px;color:#edeae1!important;margin:18px 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