:root{--bg:#fbf7f2;--panel:#fff;--ink:#0f172a;--muted:#64748b;--ring:#e5e7eb;--brand:#d97706;--shadow:0 1px 2px rgba(0,0,0,.04),0 12px 30px rgba(2,6,23,.06)}
*{box-sizing:border-box}
.container{max-width:1200px;margin:32px auto;padding:0 16px}
h1{font-size:28px;font-weight:800;margin:0 0 6px}
.sub{color:var(--muted);margin:0 0 22px;font-size:14px}
.columns{display:grid;grid-template-columns:1fr;gap:22px;align-items:start}
@media(min-width:980px){.columns{grid-template-columns:520px minmax(0,1fr)}}
.section{background:var(--panel);border:1px solid var(--ring);border-radius:18px;box-shadow:var(--shadow)}
.section-body{padding:18px}
.section-title{font-size:16px;font-weight:700;margin:0 0 12px}
.grid2{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:680px){.grid2{grid-template-columns:1fr 1fr}}
label{font-size:13px;color:var(--muted);display:block;margin-bottom:6px}
input[type=number],select{width:100%;padding:10px 12px;border:1px solid var(--ring);border-radius:12px;background:#fff;color:#111}
.btns{display:flex;gap:10px;margin-top:14px}
.btn{appearance:none;border:0;padding:12px 16px;border-radius:14px;font-weight:800;cursor:pointer}
.btn-primary{background:#0ea5e9;color:#fff}
.btn-outline{background:#fff;border:1px solid var(--ring);color:#0f172a}
.chips{display:grid;grid-template-columns:1fr;gap:10px;margin-top:12px}
@media(min-width:680px){.chips{grid-template-columns:1fr 1fr}}
.chip{display:flex;align-items:center;gap:12px;border:1px solid var(--ring);border-radius:12px;padding:10px 12px;background:#fff;cursor:pointer;user-select:none}
.chip input{appearance:none;width:18px;height:18px;border:2px solid #cbd5e1;border-radius:5px;background:#fff;position:relative}
.chip input:checked{background:#22c55e;border-color:#22c55e}
.chip input:checked::after{content:'';position:absolute;left:4px;top:1px;width:6px;height:10px;border:2px solid #fff;border-top:0;border-left:0;transform:rotate(45deg)}
.chip .chip-text{font-size:13px}
.counter{display:flex;align-items:center;gap:8px;margin-top:8px}
.step{width:36px;height:36px;border-radius:10px;border:1px solid var(--ring);background:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;cursor:pointer}
.count{width:26px;text-align:center;font-weight:800}
.cards{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:900px){.cards{grid-template-columns:1fr 1fr}}
.card{background:#fff;border:1px solid var(--ring);border-radius:16px;padding:14px}
.full{grid-column:1/-1}
.label{font-size:12px;font-weight:700;color:#64748b;letter-spacing:.02em;text-transform:uppercase}
.metric{font-size:24px;font-weight:800;margin-top:4px}
.muted{color:#64748b;font-size:12px}
.review{background:linear-gradient(180deg,#fffaf1,#fff);border:1px solid var(--ring);border-left:6px solid var(--brand);border-radius:16px;padding:18px;box-shadow:var(--shadow)}
.review h3{margin:0 0 6px;font-size:18px}
/* Sustainable Choice slider */
.sc-control{display:flex;align-items:center;gap:10px;margin-top:8px}
.sc-btn{background:#fff;border:1px solid var(--ring);border-radius:10px;padding:8px 12px;font-weight:800;cursor:pointer}
#scSlider{flex:1;height:34px}
#scSlider::-webkit-slider-runnable-track{height:8px;background:#e5e7eb;border-radius:999px}
#scSlider::-webkit-slider-thumb{-webkit-appearance:none;margin-top:-8px;height:22px;width:22px;border-radius:999px;background:#d97706;border:2px solid #fff}
#scSlider::-moz-range-track{height:8px;background:#e5e7eb;border-radius:999px}
#scSlider::-moz-range-thumb{height:22px;width:22px;border:2px solid #fff;border-radius:999px;background:#d97706}
.sc-ticks{display:grid;gap:0 6px;margin-top:8px;margin-bottom:6px;font-size:12px;color:#64748b;user-select:none}
.sc-ticks .tick{display:block;text-align:center;cursor:pointer;padding:2px 0;border-radius:6px}
.sc-ticks .tick.active{color:#b45309;font-weight:700;background:#fff7ed}
/* plan cards */
.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:12px}
.plan-card{background:#fff;border:1px solid var(--ring);border-radius:14px;padding:14px 16px;text-align:center}
.plan-title{font-weight:700;font-size:12px;text-transform:uppercase;color:#475569}
.plan-price{font-size:22px;font-weight:900;line-height:1.1;margin-top:6px}
.plan-unit{font-size:12px;color:#64748b;margin-top:4px}
.hydrowind{border-top:5px solid #059669}
.solarwind{border-top:5px solid #d97706}
.allsolar{border-top:5px solid #dc2626}
canvas{max-height:260px}