:root{--ink:#224d57;--ink-2:#78939a;--muted:#8f9699;--line:#d6dcde;--soft:#eeeeee;--paper:#ffffff;--accent:#849aa0;--warn:#a7621b}
*{box-sizing:border-box}html,body{overflow-x:hidden}body{margin:0;font-family:Arial,sans-serif;color:#111;background:#f3f5f5}button,select,input{font:inherit}.shell{min-height:100vh;display:grid;grid-template-columns:minmax(0,1fr) 390px}.main{min-width:0;padding:22px clamp(14px,2.5vw,34px) 36px}.side{min-width:0;position:sticky;top:0;height:100vh;overflow:auto;background:#fff;border-left:1px solid var(--line);padding:18px}.topbar{display:flex;align-items:center;gap:14px;margin-bottom:18px}.topbar>div{min-width:0}.logo{width:74px;height:74px;object-fit:contain;background:var(--ink)}h1{margin:0;font-size:24px;color:var(--ink);line-height:1.15}.sub{color:var(--muted);margin-top:5px;font-size:13px;overflow-wrap:anywhere}.sticky-total{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:1fr auto auto;gap:12px;align-items:center;background:#fff;border:1px solid var(--line);border-top:6px solid var(--ink);padding:12px;margin-bottom:16px;box-shadow:0 7px 18px rgba(34,77,87,.08)}.total-label{color:var(--muted);font-size:12px;text-transform:uppercase}.total-value{color:var(--ink);font-size:24px;font-weight:700;white-space:nowrap}.btn{border:0;min-height:42px;padding:0 15px;background:var(--ink);color:#fff;cursor:pointer;font-weight:700}.btn.secondary{background:#e6ecee;color:var(--ink)}.btn:disabled{opacity:.45;cursor:not-allowed}.grid{display:grid;grid-template-columns:340px minmax(0,1fr);gap:18px}.panel{min-width:0;background:#fff;border:1px solid var(--line);padding:16px}.panel h2{margin:-16px -16px 14px;padding:12px 16px;background:var(--ink);color:#fff;font-size:15px;text-transform:uppercase}.field{display:grid;gap:7px;margin-bottom:12px}.field label{font-size:12px;color:var(--muted);text-transform:uppercase}select{width:100%;min-height:42px;border:1px solid #b8c4c7;padding:0 10px;background:#fff;color:#111}.model-photo{width:100%;aspect-ratio:14/9;object-fit:contain;background:#fff;display:block}.price-card{margin-top:12px;display:grid;gap:8px}.price-row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 12px;border-bottom:1px solid var(--line);padding-bottom:7px}.price-row strong{color:var(--ink)}.spec-table{width:100%;border-collapse:collapse}.spec-table td{padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}.spec-table tr:nth-child(odd) td{background:#eeeeee}.spec-table tr:nth-child(even) td{background:#fff}.spec-table td:first-child{color:#4f5d61;width:44%}.section-title{margin:22px 0 0;padding:12px 16px;background:var(--ink);color:#fff;font-size:15px;text-transform:uppercase}.base-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;background:#fff;border:1px solid var(--line);border-top:0;padding:12px}.base-item{background:#eeeeee;border-left:4px solid var(--ink);padding:9px 10px;font-size:13px}.option-group{margin-top:14px;background:#fff;border:1px solid var(--line)}.option-group h3{margin:0;padding:10px 12px;background:var(--ink);color:#fff;font-size:14px}.option-row{display:grid;grid-template-columns:34px minmax(0,1fr) 115px;gap:10px;align-items:start;padding:11px 12px;border-top:1px solid var(--line)}.option-row:nth-of-type(odd){background:#eeeeee}.option-row.selected{background:#dfe9eb;box-shadow:inset 4px 0 0 var(--ink)}.option-row input{width:20px;height:20px;accent-color:var(--ink)}.option-name{line-height:1.3}.option-price{text-align:right;font-weight:700;color:var(--ink);white-space:nowrap}.warning{color:var(--warn);font-size:12px;margin-top:4px}.side h2{margin:-18px -18px 12px;padding:14px 18px;background:var(--ink);color:#fff;font-size:18px}.summary-row{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--line)}.summary-row.big{margin:0 -8px;padding:11px 8px;background:var(--accent);color:#fff;font-size:20px;font-weight:700}.summary-note{color:var(--muted);font-size:12px;margin-top:8px}.kp-preview{margin-top:18px;border:1px solid var(--line);background:#fff;padding:13px;font-size:12px;color:#344}.kp-preview h3{margin:-13px -13px 10px;padding:9px 13px;background:var(--ink);color:#fff;font-size:13px}.hidden{display:none!important}@media(max-width:980px){.shell{display:block}.side{position:static;height:auto;border-left:0;border-top:1px solid var(--line)}.grid{grid-template-columns:1fr}.sticky-total{grid-template-columns:1fr}.total-value{font-size:22px}.base-list{grid-template-columns:1fr}}@media(max-width:560px){.main{padding:12px}.topbar{align-items:flex-start}.logo{width:56px;height:56px}h1{font-size:19px}.price-row{display:block}.price-row strong{display:block;margin-top:4px}.option-row{grid-template-columns:30px minmax(0,1fr)}.option-price{grid-column:2;text-align:left}}