:root{--bg:#fafaf7;--surface:#fff;--ink:#1a1a1a;--ink-muted:#5c5c5c;--ink-faint:#8a8a85;--rule:#e5e2d8;--rule-soft:#efede5;--brand-primary:#2e4a5f;--brand-primary-ink:#1f3344;--brand-primary-soft:#e8eef2;--brand-accent:#4a6b3a;--brand-accent-soft:#ecf1e5;--warn:#b5562b;--warn-soft:#fbede3;--shadow-card:0 1px 2px rgba(0,0,0,.04),0 4px 14px rgba(0,0,0,.04);--radius-card:12px;--radius-input:6px;--radius-button:6px}.calc{background:var(--bg);color:var(--ink);font:16px/1.5 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;margin:0 auto;max-width:480px}.calc *,.calc :after,.calc :before{box-sizing:border-box}.calc__head{margin-bottom:16px}.calc__crumbs{color:var(--ink-faint);font-size:12px;letter-spacing:.06em;margin:0 0 8px;text-transform:uppercase}.calc__title{color:var(--ink);font-size:24px;font-weight:600;letter-spacing:-.01em;margin:0 0 6px}.calc__sub{color:var(--ink-muted);font-size:15px;line-height:1.45;margin:0}.calc__time{color:var(--ink-faint);font-size:13px;margin-top:8px}.section{background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius-card);margin-top:14px;padding:16px}.section.is-editing{background:var(--brand-accent-soft);border-color:var(--brand-accent)}.section__label{color:var(--ink-faint);font-size:12px;font-weight:600;letter-spacing:.06em;margin:0 0 6px;text-transform:uppercase}.section__label .editing-tag{color:var(--brand-accent);margin-left:6px}.section__title{color:var(--ink);font-size:17px;font-weight:600;margin:0 0 4px}.section__hint{color:var(--ink-muted);font-size:14px;line-height:1.4;margin:0 0 14px}.seg{display:grid;gap:6px}.seg,.seg--six{grid-template-columns:repeat(3,1fr)}.seg button{appearance:none;background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius-button);color:var(--ink);cursor:pointer;font:500 14px/1.2 inherit;min-height:44px;padding:10px 8px}.seg button.is-active{background:var(--brand-primary-soft);border-color:var(--brand-primary);color:var(--brand-primary-ink)}.seg button:focus-visible{outline:2px solid var(--brand-primary);outline-offset:2px}.stepper{align-items:center;background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius-button);display:inline-flex;overflow:hidden}.stepper button{appearance:none;background:transparent;border:0;color:var(--ink);cursor:pointer;font-size:18px;height:44px;width:44px}.stepper button:focus-visible{outline:2px solid var(--brand-primary);outline-offset:-2px}.stepper input{-moz-appearance:textfield;background:transparent;border:0;border-left:1px solid var(--rule);border-right:1px solid var(--rule);color:var(--ink);font:500 16px/1.2 inherit;height:44px;text-align:center;width:56px}.stepper input::-webkit-inner-spin-button,.stepper input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.appliances{display:flex;flex-direction:column;gap:8px}.appliance{align-items:center;background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius-input);cursor:pointer;display:flex;gap:12px;min-height:44px;padding:12px;user-select:none}.appliance.is-on{background:var(--brand-accent-soft);border-color:var(--brand-accent)}.appliance__check{align-items:center;background:var(--surface);border:1.5px solid var(--ink-faint);border-radius:4px;color:transparent;display:flex;flex:none;height:22px;justify-content:center;width:22px}.appliance.is-on .appliance__check{background:var(--brand-accent);border-color:var(--brand-accent);color:#fff}.appliance__check svg{height:14px;width:14px}.appliance__name{flex:1;font-size:15px;font-weight:500}.appliance__amps{color:var(--ink-muted);font-size:13px;white-space:nowrap}.tweak-link{background:none;border:0;cursor:pointer;font:500 13px inherit;padding:8px 0 0;text-decoration:underline}.tweak-link,.tweak-link.is-collapsed{color:var(--brand-primary)}.tweak-link.is-expanded{color:var(--brand-accent)}.slider-row{align-items:center;display:flex;gap:12px;margin-top:4px}.slider-row input[type=range]{accent-color:var(--brand-primary);flex:1}.slider-val{font:600 15px/1 inherit;min-width:64px;text-align:right}.slider-scale{color:var(--ink-faint);display:flex;font-size:12px;justify-content:space-between;margin-top:4px}.submit{appearance:none;background:var(--brand-primary);border:0;border-radius:var(--radius-button);color:#fff;cursor:pointer;font:600 16px/1 inherit;letter-spacing:.01em;margin-top:18px;min-height:48px;padding:16px;width:100%}.submit:hover{background:var(--brand-primary-ink)}.submit:active{transform:scale(.99)}.submit:focus-visible{outline:2px solid var(--ink);outline-offset:2px}.submit[disabled]{cursor:not-allowed;opacity:.55}.from-upstream{align-items:center;background:var(--brand-accent-soft);border:1px solid var(--brand-accent);border-radius:var(--radius-input);display:flex;gap:14px;padding:14px}.from-upstream__num{color:var(--ink);font-size:26px;font-weight:600;letter-spacing:-.01em;line-height:1}.from-upstream__num .unit{color:var(--ink-muted);font-size:14px;font-weight:500;margin-left:4px}.from-upstream__src{color:var(--ink-muted);flex:1;font-size:13px;line-height:1.4}.from-upstream__src strong{color:var(--ink);font-weight:600}.override-link{background:none;border:0;color:var(--brand-primary);cursor:pointer;font:500 13px inherit;padding:8px 0 0;text-decoration:underline}.climate-foot{color:var(--ink-muted);font-size:13px;line-height:1.45;margin-top:10px}.climate-foot strong{color:var(--ink);font-weight:600}.reserve-picker{display:grid;gap:6px;grid-template-columns:repeat(3,1fr);margin-top:14px}.reserve-picker button{appearance:none;background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius-button);color:var(--ink);cursor:pointer;font:500 13px/1.2 inherit;min-height:56px;padding:10px 6px;text-align:center}.reserve-picker button.is-active{background:var(--surface);border-color:var(--brand-accent);box-shadow:0 0 0 1px var(--brand-accent) inset;color:var(--ink)}.reserve-picker__lbl{color:var(--ink);display:block;font-size:14px;font-weight:600}.reserve-picker__sub{color:var(--ink-muted);display:block;font-size:12px;margin-top:2px}.recompute{align-items:center;background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius-input);display:flex;gap:12px;justify-content:space-between;margin-top:14px;padding:12px 14px}.recompute__lbl{color:var(--ink-faint);font-size:12px;letter-spacing:.05em;margin:0;text-transform:uppercase}.recompute__val{color:var(--ink);font-size:20px;font-weight:600;letter-spacing:-.01em;margin:0}.recompute__val.has-changed{color:var(--brand-accent)}.recompute__val .unit{color:var(--ink-muted);font-size:14px;font-weight:500;margin-left:4px}.recompute__delta{color:var(--brand-accent);font-size:12px;font-weight:600;margin:2px 0 0}.reset-row{align-items:center;border:1px dashed var(--rule);border-radius:var(--radius-input);color:var(--ink-muted);display:flex;font-size:13px;gap:12px;justify-content:space-between;margin-top:10px;padding:10px 12px}.reset-row.is-clean{display:none}.reset-row button{appearance:none;background:transparent;border:0;color:var(--brand-primary);cursor:pointer;font:500 13px inherit;padding:0;text-decoration:underline}.result{margin-top:0}.result__progress{align-items:center;background:var(--brand-accent-soft);border-radius:999px;color:var(--brand-accent);display:inline-flex;font-size:12px;font-weight:600;gap:6px;letter-spacing:.06em;padding:6px 10px;text-transform:uppercase}.result__dots{display:inline-flex;gap:3px}.result__dots span{background:rgba(0,0,0,.18);border-radius:50%;height:6px;width:6px}.result__dots span.is-on{background:var(--brand-accent)}.result__hero{background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius-card);margin-top:12px;padding:20px 18px}.result__answer{color:var(--ink);font-size:30px;font-weight:600;letter-spacing:-.02em;line-height:1.15;margin:0}.result__answer .unit{color:var(--ink-muted);font-size:22px;font-weight:500;margin-left:4px}.result__answer+.result__answer{color:var(--brand-primary-ink);margin-top:4px}.result__rig{color:var(--ink-faint);font-size:13px;letter-spacing:.06em;margin:14px 0 0;text-transform:uppercase}.result__interp{color:var(--ink);font-size:15px;line-height:1.5;margin:6px 0 0}.compare-link{background:none;border:0;color:var(--brand-primary);cursor:pointer;display:inline-block;font:500 13px inherit;margin:12px 0 0;padding:0;text-decoration:underline}.flow{background:var(--bg);border:1px solid var(--rule-soft);border-radius:var(--radius-input);margin-top:14px;padding:14px}.flow__row{align-items:center;display:flex;gap:10px;margin-bottom:6px}.flow__row:last-child{margin-bottom:0}.flow__lbl{color:var(--ink-muted);font-size:12px;letter-spacing:.05em;text-transform:uppercase;width:92px}.flow__bar{background:var(--rule-soft);border-radius:999px;flex:1;height:10px;overflow:hidden}.flow__fill{border-radius:999px;height:100%}.flow__fill--in{background:var(--brand-accent)}.flow__fill--out{background:var(--brand-primary)}.flow__num{font-size:13px;font-weight:600;text-align:right;width:70px}.next{background:var(--brand-primary-soft);border:1px solid var(--brand-primary);border-radius:var(--radius-card);margin-top:14px;padding:18px}.next__crumb{font-size:12px;letter-spacing:.06em;margin:0 0 4px;text-transform:uppercase}.next__crumb,.next__title{color:var(--brand-primary-ink);font-weight:600}.next__title{font-size:18px;margin:0 0 6px}.next__why{color:var(--brand-primary-ink);font-size:14px;line-height:1.5;margin:0 0 14px}.next__cta{align-items:center;background:var(--brand-primary);border:0;border-radius:var(--radius-button);color:#fff;cursor:pointer;display:flex;font:600 15px/1 inherit;gap:8px;justify-content:center;min-height:48px;padding:14px;text-decoration:none;width:100%}.next__cta:active,.next__cta:focus,.next__cta:hover,.next__cta:link,.next__cta:visited{color:#fff}.next__cta:hover{background:var(--brand-primary-ink)}.next__cta:focus-visible{outline:2px solid var(--ink);outline-offset:2px}.actions{display:grid;gap:6px;grid-template-columns:1fr 1fr;margin-top:12px}.actions--three{grid-template-columns:1fr 1fr 1fr}.actions button{appearance:none;background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius-button);color:var(--ink-muted);cursor:pointer;font:500 13px/1.1 inherit;min-height:44px;padding:10px 6px}.readout-teaser{color:var(--ink-muted);font-size:13px;line-height:1.5;margin-top:14px;text-align:center}.readout-teaser strong{color:var(--ink);font-weight:600}.keep-inputs{align-items:center;background:var(--surface);border:1px solid var(--rule);border-radius:var(--radius-card);color:var(--ink-muted);display:flex;font-size:13px;gap:12px;justify-content:space-between;margin-top:12px;padding:12px 14px}.keep-inputs__sum{line-height:1.4}.keep-inputs button{appearance:none;background:transparent;border:1px solid var(--rule);border-radius:var(--radius-button);color:var(--brand-primary);cursor:pointer;font:500 13px inherit;padding:8px 10px;white-space:nowrap}.sticky-cta{background:var(--brand-primary);border:0;border-radius:var(--radius-button);bottom:12px;box-shadow:0 -2px 12px rgba(0,0,0,.12);color:#fff;cursor:pointer;display:none;font:600 15px/1 inherit;left:12px;min-height:48px;padding:14px;position:fixed;right:12px;text-align:center;text-decoration:none;z-index:50}.sticky-cta.is-visible{display:block}@media (min-width:768px){.sticky-cta.is-visible{display:none}}.calc__form,.calc__result{transition:opacity .25s ease,transform .25s ease}.calc__form[hidden],.calc__result[hidden]{display:none}.calc__result.is-revealing{animation:result-reveal .28s ease forwards}@keyframes result-reveal{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion:reduce){.calc__form,.calc__result{transition:none}.calc__result.is-revealing{animation:none}}.calc__error{align-items:flex-start;background:var(--warn-soft);border:1px solid var(--warn);border-radius:var(--radius-input);color:var(--warn);display:flex;font-size:13px;gap:8px;margin-top:8px;padding:10px 12px}.calc__error[hidden]{display:none}.calc__field-error{color:var(--warn);font-size:12px;margin-top:6px}@media (max-width:374px){.calc{padding:0 4px}.section{padding:12px}}