.bk{--bk-acc:#0057a8;--bk-acc2:#e30613;--bk-ink:#1b2430;--bk-mut:#647084;--bk-line:#dfe4ea;--bk-bg:#f4f6f9;--bk-card:#fff;--bk-ok:#e6f1fb;
  font:15px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--bk-ink);background:var(--bk-bg);padding:16px;box-sizing:border-box}
.bk *,.bk *::before,.bk *::after{box-sizing:border-box}
body{margin:0;background:#f4f6f9}
.bk-head{max-width:1200px;margin:0 auto 12px}.bk-head h1{margin:0 0 4px;font-size:26px;color:var(--bk-acc)}.bk-head p{margin:0;color:var(--bk-mut)}
.bk-layout{max-width:1200px;margin:auto;display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:18px;align-items:start}
.bk-step{background:var(--bk-card);border:1px solid var(--bk-line);border-radius:12px;padding:14px 16px;margin-bottom:14px}
.bk-step.off{display:none}
.bk-step h2{margin:0 0 10px;font-size:17px;display:flex;align-items:center;gap:8px}
.bk-step h2 span{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--bk-acc);color:#fff;font-size:13px}
.bk-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px}
.bk-card{border:2px solid var(--bk-line);border-radius:10px;padding:10px;background:#fff;cursor:pointer;text-align:left;font:inherit;color:inherit;display:flex;flex-direction:column;gap:4px}
.bk-card:hover{border-color:#9cc2e8}.bk-card.on{border-color:var(--bk-acc);background:var(--bk-ok)}
.bk-card b{font-size:14px}.bk-card small{color:var(--bk-mut);font-size:12px;line-height:1.35}
.bk-card svg{width:100%;height:64px}
.bk-row{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end;margin-bottom:10px}
.bk-f{display:flex;flex-direction:column;gap:3px;min-width:150px;flex:1}
.bk-f label{font-size:12px;color:var(--bk-mut)}
.bk input[type=number],.bk input[type=text],.bk input[type=email],.bk input[type=tel],.bk select,.bk textarea{font:inherit;padding:8px 10px;border:1px solid var(--bk-line);border-radius:8px;background:#fff;color:inherit;width:100%}
.bk input:focus,.bk select:focus,.bk textarea:focus{outline:2px solid #9cc2e8;border-color:var(--bk-acc)}
.bk-hint{font-size:12px;color:var(--bk-mut);margin:2px 0 0}
.bk-err{font-size:13px;color:var(--bk-acc2);margin:4px 0}
.bk-note{background:var(--bk-ok);border-radius:8px;padding:8px 10px;font-size:13px;margin:8px 0}
.bk-warn{background:#fff4e5;color:#8a4b00;border-radius:8px;padding:8px 10px;font-size:13px;margin:8px 0}
.bk-chk{display:flex;gap:8px;align-items:flex-start;padding:6px 0;border-bottom:1px dashed var(--bk-line)}
.bk-chk:last-child{border-bottom:0}.bk-chk input{margin-top:4px}.bk-chk .p{margin-left:auto;white-space:nowrap;color:var(--bk-mut);font-size:13px}
.bk-acc-g{margin:10px 0 4px;font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.03em;color:var(--bk-mut)}
.bk-acc-row{display:grid;grid-template-columns:1fr 110px 70px;gap:8px;align-items:center;padding:5px 0;border-bottom:1px solid var(--bk-line)}
.bk-acc-row .p{text-align:right;font-size:13px;white-space:nowrap}
.bk-acc-row input{padding:5px 6px!important}
.bk-btn{font:inherit;border:0;border-radius:8px;padding:10px 16px;background:var(--bk-acc);color:#fff;cursor:pointer;font-weight:600}
.bk-btn.sec{background:#fff;color:var(--bk-acc);border:1px solid var(--bk-acc)}.bk-btn.del{background:#fff;color:var(--bk-acc2);border:1px solid var(--bk-line);padding:4px 8px;font-weight:400}
.bk-btn:disabled{opacity:.45;cursor:not-allowed}
.bk-side{position:sticky;top:12px}
.bk-sum{background:var(--bk-card);border:1px solid var(--bk-line);border-radius:12px;padding:14px 16px}
.bk-sum h3{margin:0 0 8px;font-size:16px}
.bk-sum table{width:100%;border-collapse:collapse;font-size:13px}.bk-sum td{padding:3px 0;vertical-align:top}.bk-sum td:last-child{text-align:right;white-space:nowrap;padding-left:8px}
.bk-sum .tot td{border-top:2px solid var(--bk-ink);font-weight:700;font-size:15px;padding-top:6px}
.bk-sum .vat td{color:var(--bk-mut)}
.bk-big{font-size:24px;font-weight:700;color:var(--bk-acc)}
.bk-cart-item{display:flex;gap:10px;justify-content:space-between;border-bottom:1px solid var(--bk-line);padding:8px 0}
.bk-cart-item small{display:block;color:var(--bk-mut)}
.bk-dir{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:8px}
.bk-dir .bk-card{align-items:center;text-align:center}
.bk-dir svg{height:58px}
.bk-schema{max-width:520px}
@media (max-width:900px){.bk-layout{grid-template-columns:1fr}.bk-side{position:static}.bk{padding:10px}}
@media print{.bk-step:not(.bk-cart),.bk-head p,#bk-contact,.bk-btn{display:none!important}.bk-layout{display:block}.bk{background:#fff}}