:root{--ink:#1a1626;--ink-soft:#4a4458;--paper:#f7f5f0;--card:#fff;--line:#e4e0d8;--spark:#ffb03a;--spark-deep:#d98a10;--truth:#3ec28f;--truth-deep:#2a9970;--alert:#e4593c;--header:#1a1626;--header-text:#f7f5f0;--radius:14px;--tap:48px}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{background:var(--paper);color:var(--ink);min-height:100dvh;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,sans-serif;line-height:1.45}button{font:inherit;cursor:pointer;color:inherit;background:0 0;border:none}a{color:inherit}:focus-visible{outline:3px solid var(--spark-deep);outline-offset:2px;border-radius:4px}.app-header{background:var(--header);color:var(--header-text);z-index:20;justify-content:space-between;align-items:center;padding:10px 16px;display:flex;position:sticky;top:0}.app-header .brand{letter-spacing:.02em;font-size:1.05rem;font-weight:800;text-decoration:none}.app-header .brand span{color:var(--spark)}.header-actions{align-items:center;gap:6px;display:flex}.header-btn{background:#ffffff1a;border-radius:999px;align-items:center;gap:4px;min-height:36px;padding:4px 10px;font-size:.85rem;text-decoration:none;display:inline-flex}main.screen{max-width:480px;padding:12px 16px calc(96px + env(safe-area-inset-bottom));flex-direction:column;gap:12px;margin:0 auto;display:flex}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}.item-card{align-items:center;gap:14px;display:flex}.item-card .emoji{font-size:2.4rem;line-height:1}.item-card .qty{font-variant-numeric:tabular-nums;font-size:1.35rem;font-weight:800}.item-card .name{color:var(--ink-soft);font-size:.95rem}.vs-divider{text-align:center;color:var(--ink-soft);letter-spacing:.06em;text-transform:uppercase;font-size:.85rem}.log-axis{background:linear-gradient(90deg,#eee9df,#d9d2c4);border-radius:999px;height:10px;position:relative}.log-axis .tick{background:var(--line);border-radius:1px;width:2px;height:16px;position:absolute;top:-3px}.log-axis .marker{border:3px solid var(--card);border-radius:50%;width:18px;height:18px;position:absolute;top:50%;transform:translate(-50%,-50%);box-shadow:0 1px 4px #1a162659}.log-axis .marker.guess{background:var(--spark)}.log-axis .marker.truth{background:var(--truth)}@media (prefers-reduced-motion:no-preference){.log-axis .marker.truth{animation:.5s cubic-bezier(.2,1.4,.4,1) drop-in}@keyframes drop-in{0%{opacity:0;transform:translate(-50%,-220%)}to{opacity:1;transform:translate(-50%,-50%)}}}.readout{text-align:center;font-variant-numeric:tabular-nums;letter-spacing:-.02em;font-size:3rem;font-weight:800;line-height:1.1}.readout .unit{color:var(--ink-soft);margin-left:6px;font-size:1.1rem;font-weight:600}.slider-block{padding:18px 8px 8px}input[type=range].log-slider{appearance:none;width:100%;height:var(--tap);touch-action:none;background:0 0}input[type=range].log-slider::-webkit-slider-runnable-track{background:linear-gradient(90deg,#eee9df,#d9d2c4);border-radius:999px;height:10px}input[type=range].log-slider::-webkit-slider-thumb{-webkit-appearance:none;background:var(--spark);border:4px solid var(--card);border-radius:50%;width:34px;height:34px;margin-top:-12px;box-shadow:0 2px 8px #1a16264d}input[type=range].log-slider::-moz-range-track{background:linear-gradient(90deg,#eee9df,#d9d2c4);border-radius:999px;height:10px}input[type=range].log-slider::-moz-range-thumb{background:var(--spark);border:4px solid var(--card);border-radius:50%;width:34px;height:34px;box-shadow:0 2px 8px #1a16264d}.slider-labels{color:var(--ink-soft);font-variant-numeric:tabular-nums;justify-content:space-between;padding:0 4px;font-size:.8rem;display:flex}.bottom-bar{padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:linear-gradient(to top, var(--paper) 70%, transparent);z-index:10;justify-content:center;display:flex;position:fixed;bottom:0;left:0;right:0}.bottom-bar .primary{border-radius:var(--radius);background:var(--ink);width:100%;max-width:448px;min-height:54px;color:var(--paper);font-size:1.05rem;font-weight:700}.bottom-bar .primary:disabled{opacity:.4;cursor:default}.co2-badge{font-variant-numeric:tabular-nums;color:var(--spark-deep);white-space:nowrap;text-align:right;margin-left:auto;font-size:1.15rem;font-weight:800}.co2-badge .verdict{font-size:.8rem;font-weight:700;display:block}.co2-badge .verdict.win{color:var(--truth-deep)}.co2-badge .verdict.lose{color:var(--alert)}.score-pill{font-variant-numeric:tabular-nums;background:var(--ink);color:var(--paper);border-radius:999px;align-items:center;gap:6px;padding:4px 12px;font-weight:800;display:inline-flex}.score-pill.good{background:var(--truth-deep)}.score-pill.bad{background:var(--alert)}details.breakdown{border-top:1px solid var(--line);margin-top:10px;padding-top:10px}details.breakdown summary{cursor:pointer;min-height:var(--tap);align-items:center;font-weight:600;display:flex}.breakdown-item{margin:8px 0}.breakdown-item .step{border-bottom:1px dashed var(--line);flex-direction:column;padding:4px 0;display:flex}.breakdown-item .step .math{color:var(--ink-soft);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.82rem}.breakdown-item .step .label{font-size:.85rem;font-weight:600}.assumption{color:var(--ink-soft);margin-top:6px;font-size:.8rem}.conversion-row{border-bottom:1px solid var(--line);grid-template-columns:2rem 1fr auto;align-items:center;gap:8px;padding:7px 0;font-size:.95rem;display:grid}.conversion-row:last-child{border-bottom:none}.conversion-row.own{background:linear-gradient(90deg,#ffb03a24,#0000);border-radius:8px;margin-left:-6px;padding-left:6px}.conversion-row .bar-track{background:#eee9df;border-radius:999px;height:8px;margin-top:4px;position:relative}.conversion-row .bar{background:var(--truth);border-radius:999px;min-width:4px;position:absolute;inset:0 auto 0 0}.conversion-row .value{font-variant-numeric:tabular-nums;white-space:nowrap;font-weight:700}.takeaway{border-left:4px solid var(--spark);background:#ffb03a1a;border-radius:0 8px 8px 0;padding:10px 12px;font-size:.95rem;font-weight:600}.muted{color:var(--ink-soft);font-size:.88rem}.binary-choice{gap:10px;display:grid}.binary-choice .card{text-align:left;width:100%;min-height:84px}.binary-choice .card[aria-pressed=true]{border-color:var(--spark-deep);box-shadow:0 0 0 2px var(--spark)}@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}