.heat-load-article{background:#fff;max-width:1220px;margin:0 auto}.intro-section{background:linear-gradient(145deg,#f0f5f7,#dfe9ee)}.lead-text{font-size:1.08rem;max-width:78ch}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:24px}.info-card{background:#fff;border:1px solid #c8d8df;border-radius:10px;padding:18px 20px}.info-card h3{margin:0 0 8px;color:var(--ranheat-teal);font-size:1rem}.section{padding:40px 0}.layout-two-col{display:grid;grid-template-columns:minmax(300px,420px) 1fr;gap:40px;align-items:start}@media (max-width: 760px){.layout-two-col{grid-template-columns:1fr}}.controls-panel h2,.results-panel h2{margin-top:0;color:var(--ranheat-navy)}fieldset{border:1px solid #c8d8df;border-radius:8px;padding:14px 16px;margin-bottom:16px}legend{font-weight:700;font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ranheat-teal);padding:0 6px}label{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:14px;font-size:.92rem;font-weight:600}label:last-child{margin-bottom:0}.unit{font-weight:400;color:#5a7a87;font-size:.82rem}output{margin-left:auto;font-variant-numeric:tabular-nums;color:var(--ranheat-orange-deep);font-weight:700;min-width:60px;text-align:right}input[type=range]{width:100%;accent-color:var(--ranheat-teal);cursor:pointer}.result-status{font-size:.88rem;color:#5a7a87;min-height:1.2em}.result-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:20px}.result-card{background:#f4f8fa;border:1px solid #c8d8df;border-radius:10px;padding:16px 18px}.result-card.total{grid-column:1 / -1;background:var(--ranheat-navy);color:#fff;border-color:var(--ranheat-navy)}.result-card.total .result-label,.result-card.total .result-unit{color:#a0c4d0}.result-card.total .result-value{color:#fff;font-size:2.2rem}.result-label{font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--ranheat-teal);margin-bottom:6px}.result-value{font-size:1.7rem;font-weight:800;font-variant-numeric:tabular-nums;color:var(--ranheat-navy);line-height:1.1}.result-unit{font-size:.8rem;color:#5a7a87}.result-bar-track{height:4px;background:#dde8ed;border-radius:2px;margin-top:8px;overflow:hidden}.result-bar{height:100%;border-radius:2px;background:var(--ranheat-teal);width:0%;transition:width .2s ease}.result-card.conduction .result-bar{background:var(--ranheat-teal)}.result-card.air-exchange .result-bar{background:#4a9ab5}.result-card.forced-vent .result-bar{background:var(--ranheat-orange)}.disclaimer{font-size:.82rem;color:#7a9aaa;margin-top:4px}.weather-preview{margin-top:28px;padding:20px;border:1px solid #c8d8df;border-radius:14px;background:radial-gradient(circle at top right,rgba(245,160,76,.16),transparent 28%),linear-gradient(160deg,#f8fbfc,#eef5f8)}.weather-preview-header{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.weather-preview-kicker{margin:0 0 4px;font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--ranheat-teal)}.weather-preview-header h3{margin:0;color:var(--ranheat-navy)}.weather-preview-badge{display:inline-flex;align-items:center;white-space:nowrap;padding:6px 10px;border-radius:999px;background:#0a5c7817;color:var(--ranheat-teal);font-size:.78rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase}.weather-preview-copy{margin:12px 0 18px;max-width:70ch;color:#476573}.weather-preview-chart{padding:18px 14px 12px;border-radius:12px;background:#ffffffb8;border:1px solid rgba(200,216,223,.95)}.weather-preview-bars{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:8px;align-items:end;min-height:180px}.weather-bar{position:relative;display:flex;align-items:flex-end;justify-content:center;min-height:52px;border-radius:10px 10px 4px 4px;background:linear-gradient(180deg,#9fd0df,#0f6f8a);box-shadow:inset 0 1px #ffffff59}.weather-bar:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit;background:linear-gradient(180deg,rgba(255,255,255,.25),transparent 45%)}.weather-bar span{position:absolute;bottom:-28px;font-size:.72rem;font-weight:700;color:#587482;text-transform:uppercase;letter-spacing:.04em}.weather-bar.jan,.weather-bar.dec{height:88%}.weather-bar.feb,.weather-bar.nov{height:82%}.weather-bar.mar,.weather-bar.oct{height:68%}.weather-bar.apr,.weather-bar.sep{height:52%}.weather-bar.may{height:34%}.weather-bar.jun,.weather-bar.jul,.weather-bar.aug{height:22%;background:linear-gradient(180deg,#f5c279,#d96f2d)}.weather-preview-notes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:38px}.weather-note-card{padding:14px 16px;border-radius:12px;background:#ffffffc7;border:1px solid rgba(200,216,223,.95)}.weather-note-card h4{margin:0 0 6px;color:var(--ranheat-navy);font-size:.92rem}.weather-note-card p{margin:0;color:#55717d;font-size:.88rem}@media (max-width: 760px){.weather-preview-header{flex-direction:column}.weather-preview-bars{gap:6px;min-height:150px}.weather-preview-notes{grid-template-columns:1fr}}