:root{
  color-scheme:light;
  --bg:#ffffff;
  --paper:#ffffff;
  --ink:#141414;
  --ink-2:#4a4a4a;
  --ink-3:#8a8a8a;
  --rule:#d6d6d2;
  --rule-strong:#141414;
  --hover:#f5f5f3;
  --mark:#141414;
  --mark-ink:#ffffff;
  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,monospace;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.45 var(--sans);font-variant-numeric:tabular-nums}
button,input,select{font:inherit;color:inherit}
h1,h2{margin:0;font-weight:600}

/* шапка — как титул прайс-листа */
.masthead{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;
  padding:28px 32px 18px;border-bottom:2px solid var(--rule-strong);background:var(--paper)}
.doc-label{font:500 11px/1 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);margin-bottom:8px}
.masthead h1{font-size:26px;letter-spacing:-.01em}

.tabs{display:flex;gap:22px}
.tabs a{color:var(--ink-3);text-decoration:none;font-weight:500;padding-bottom:4px;border-bottom:2px solid transparent}
.tabs a:hover{color:var(--ink)}
.tabs a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--ink)}
.layout{display:grid;grid-template-columns:220px minmax(0,1fr) 360px;align-items:start;min-height:calc(100vh - 90px)}

/* оглавление */
.index{position:sticky;top:0;padding:20px 20px 24px 32px;max-height:100vh;overflow:auto}
.search span,.f>span,.f>label{display:block;font:500 10px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-bottom:6px}
.search input{width:100%;padding:8px 10px;border:1px solid var(--rule);background:var(--paper);border-radius:0}
.search input:focus,.f input:focus,.sheet select:focus,.qty:focus{outline:2px solid var(--ink);outline-offset:-2px}
#sections{list-style:none;margin:22px 0 18px;padding:0;border-top:1px solid var(--rule)}
#sections a{display:flex;justify-content:space-between;gap:8px;padding:9px 0;border-bottom:1px solid var(--rule);
  color:var(--ink-2);text-decoration:none}
#sections a:hover,#sections a.on{color:var(--ink)}
#sections a.on{font-weight:600}
#sections .n{font-family:var(--mono);font-size:12px;color:var(--ink-3)}
.check input{accent-color:var(--ink);width:15px;height:15px;margin:0}
.check{display:flex;gap:8px;align-items:center;color:var(--ink-2);font-size:13px;cursor:pointer}

/* лист каталога */
.sheet{background:var(--paper);border-left:1px solid var(--rule);border-right:1px solid var(--rule);min-height:100%;padding:0 0 40px}
.loading,.nothing{padding:24px 28px;color:var(--ink-3)}
.part{scroll-margin-top:8px;border-bottom:1px solid var(--rule)}
.part[open]{border-bottom:0}
summary.part-head{cursor:pointer;list-style:none;user-select:none}
summary.part-head::-webkit-details-marker{display:none}
summary.part-head h2::before{content:"";display:inline-block;width:7px;height:7px;margin:0 12px 2px 0;
  border-right:1.5px solid var(--ink);border-bottom:1.5px solid var(--ink);transform:rotate(-45deg);transition:transform .15s}
.part[open] summary.part-head h2::before{transform:rotate(45deg)}
summary.part-head:hover h2{text-decoration:underline;text-underline-offset:4px}
summary.part-head:focus-visible{outline:2px solid var(--ink);outline-offset:-2px}
.part:not([open]) summary.part-head{border-bottom:0}
.part-head{display:flex;justify-content:space-between;align-items:baseline;padding:26px 28px 10px;border-bottom:1px solid var(--rule-strong)}
.part-head h2{font-size:15px;text-transform:uppercase;letter-spacing:.08em}
.part-head .n{font:12px var(--mono);color:var(--ink-3)}
.series{padding:14px 28px 6px;font:500 11px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}

table.price{width:100%;border-collapse:collapse}
.price th{font:500 10px/1 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);text-align:left;
  padding:10px 8px;border-bottom:1px solid var(--rule)}
.price td{padding:11px 8px;border-bottom:1px solid var(--rule);vertical-align:top}
.price th:first-child,.price td:first-child{padding-left:28px}
.price .ph{width:72px;padding-right:0}
.thumb{display:block;padding:0;border:1px solid var(--rule);background:var(--paper);cursor:zoom-in;line-height:0}
.thumb:hover{border-color:var(--ink)}
.thumb img{display:block;width:44px;height:64px;object-fit:contain;background:var(--paper)}
.price th:last-child,.price td:last-child{padding-right:28px}
.price tr:hover td{background:var(--hover)}
.price .art{font:500 13px var(--mono);white-space:nowrap}
.price .code{display:block;font:11px var(--mono);color:var(--ink-3);margin-top:2px}
.price .name{min-width:220px}
.price .name b{font-weight:600}
.price .name small{display:block;color:var(--ink-3);font-size:12px;margin-top:2px}
.price .num{text-align:right;white-space:nowrap}
.price .stock{font-family:var(--mono);font-size:12px;text-align:right;white-space:nowrap}
.stock .zero{color:var(--ink-3);text-decoration:line-through}
.stock .na{color:var(--ink-3)}
.price select{width:100%;min-width:110px;padding:6px 28px 6px 8px;border:1px solid var(--rule);border-radius:0;cursor:pointer;
  -webkit-appearance:none;appearance:none;background:var(--paper) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23141414' stroke-width='1.2'/%3E%3C/svg%3E") no-repeat right 10px center}
.price select:hover{border-color:var(--ink)}
.price select:invalid,.price select:has(option[value=""]:checked){color:var(--ink-3)}
.price select option{color:var(--ink)}
.price .opts{display:flex;flex-direction:column;gap:6px;min-width:120px}
.buy{display:flex;gap:6px;justify-content:flex-end}
.qty{width:56px;padding:5px 6px;border:1px solid var(--rule);background:var(--paper);text-align:right;border-radius:0}
.btn{padding:6px 12px;border:1px solid var(--ink);background:transparent;cursor:pointer;border-radius:0;white-space:nowrap}
.btn:hover{background:var(--hover)}
.btn.solid{background:var(--mark);color:var(--mark-ink)}
.btn.solid:hover{opacity:.88}
.btn:disabled{opacity:.4;cursor:default}
.added td{animation:flash .9s ease-out}
@keyframes flash{from{background:var(--hover)}to{background:transparent}}

/* заявка */
.order{position:sticky;top:0;max-height:100vh;overflow:auto;padding:20px 32px 32px 24px}
.block{border-top:2px solid var(--rule-strong);padding-top:12px;margin-bottom:26px}
.block h2{font-size:13px;text-transform:uppercase;letter-spacing:.08em;display:flex;justify-content:space-between;margin-bottom:10px}
.count{font-family:var(--mono);font-weight:400}
.lines{width:100%;border-collapse:collapse}
.lines td{padding:8px 0;border-bottom:1px solid var(--rule);vertical-align:top;font-size:13px}
.lines .l-art{font:500 12px var(--mono);white-space:nowrap;padding-right:8px}
.lines .l-name small{display:block;color:var(--ink-3)}
.lines .l-sum{text-align:right;white-space:nowrap;padding-left:8px}
.lines .l-qty{display:flex;align-items:center;gap:4px;margin-top:4px}
.lines .l-qty input{width:48px;padding:2px 4px;border:1px solid var(--rule);background:var(--paper);text-align:right;border-radius:0}
.lines .rm{border:0;background:none;color:var(--ink-3);cursor:pointer;padding:0 0 0 6px;font-size:12px;text-decoration:underline}
.empty{color:var(--ink-3);font-size:13px;margin:4px 0 0}
.total{display:flex;justify-content:space-between;padding:10px 0 0;font-size:15px}

.f{display:block;margin-bottom:12px}
.f input,.f select{width:100%;padding:8px 10px;border:1px solid var(--rule);background:var(--paper);border-radius:0}
.f select{padding-right:30px;cursor:pointer;-webkit-appearance:none;appearance:none;
  background:var(--paper) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23141414' stroke-width='1.2'/%3E%3C/svg%3E") no-repeat right 12px center}
.f select:has(option[value=""]:checked){color:var(--ink-3)}
.f select option{color:var(--ink)}
.f select:focus{outline:2px solid var(--ink);outline-offset:-2px}
.f select[aria-invalid="true"]{border-color:var(--ink);border-width:2px}
.f input[aria-invalid="true"]{border-color:var(--ink);border-width:2px}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.wholesale .cro-only{display:none}
.wholesale .pair{grid-template-columns:1fr}
.mode{margin:-2px 0 12px;font-size:12px;color:var(--ink-2);border-left:2px solid var(--ink);padding:2px 0 2px 8px}
.combo{position:relative}
#deliveryOptions{position:absolute;z-index:5;left:0;right:0;top:100%;margin:0;padding:0;list-style:none;max-height:260px;overflow:auto;
  background:var(--paper);border:1px solid var(--ink);border-top:0}
#deliveryOptions li{padding:7px 10px;cursor:pointer;font-size:13px;border-bottom:1px solid var(--rule)}
#deliveryOptions li[aria-selected="true"],#deliveryOptions li:hover{background:var(--hover)}
#deliveryOptions li small{color:var(--ink-3);font-family:var(--mono);margin-left:6px}
.err{margin:4px 0 10px;font-size:13px;border-left:2px solid var(--ink);padding-left:8px}
.actions{display:flex;gap:8px}
.actions .btn{flex:1;padding:10px 12px}

.seg{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;border:1px solid var(--ink);margin-bottom:10px}
.seg label{display:block;text-align:center;padding:8px 6px;cursor:pointer;font-size:13px;border-left:1px solid var(--ink)}
.seg label:first-child{border-left:0}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg label:has(input:checked){background:var(--mark);color:var(--mark-ink)}
.seg label:has(input:focus-visible){outline:2px solid var(--ink);outline-offset:2px}
.btn.wide{width:100%;padding:10px 12px}
.sent{list-style:none;margin:10px 0 0;padding:0}
.sent li{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px solid var(--rule);font-size:13px}
.sent a{color:var(--ink);font-family:var(--mono);font-size:12px}
.sent .t{color:var(--ink-3);font:500 10px/1.8 var(--mono);letter-spacing:.12em;text-transform:uppercase}

.to-order{display:none}

.gallery{border:0;padding:0;background:transparent;max-width:none;max-height:none;width:100vw;height:100vh;margin:0}
.gallery::backdrop{background:rgba(255,255,255,.96)}
.gallery figure{margin:0;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:56px 72px}
.gallery img{height:calc(100dvh - 150px);width:auto;max-width:100%;object-fit:contain;border:1px solid var(--rule);background:var(--paper);touch-action:pan-y}
.g-cap{font:500 12px var(--mono);letter-spacing:.06em;color:var(--ink-2)}
.g-close{position:fixed;top:16px;right:20px;border:1px solid var(--ink);background:var(--paper);padding:6px 12px;cursor:pointer}
.g-nav{position:fixed;top:50%;transform:translateY(-50%);width:44px;height:44px;border:1px solid var(--ink);background:var(--paper);cursor:pointer;font-size:18px}
.g-prev{left:16px}.g-next{right:16px}
@media (max-width:760px){
  .gallery figure{padding:56px 12px 24px}
  .gallery img{height:auto;max-height:calc(100dvh - 140px)}
  .g-nav{top:auto;bottom:16px;transform:none}
}
.g-close:hover,.g-nav:hover{background:var(--hover)}
.g-close:focus-visible,.g-nav:focus-visible,.thumb:focus-visible,.btn:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
.gallery :focus:not(:focus-visible){outline:none}

@media (max-width:1180px){
  .layout{grid-template-columns:200px minmax(0,1fr)}
  .order{grid-column:1/-1;position:static;max-height:none;padding:24px 32px}
}
@media (max-width:760px){
  .masthead{padding:20px 16px 14px}
  .masthead h1{font-size:21px}
    .layout{display:block}
  .index{position:static;max-height:none;padding:14px 16px}
  #sections{display:flex;gap:0 14px;flex-wrap:wrap;border:0;margin:12px 0}
  #sections a{border:0;padding:4px 0;justify-content:flex-start}
  .sheet{border:0}
  .part-head,.series{padding-left:16px;padding-right:16px}
  .price thead{display:none}
  .price,.price tbody{display:block;width:100%}
  .price td{display:block;min-width:0}
  .price tr{display:grid;grid-template-columns:1fr auto;gap:4px 12px;padding:12px 16px;border-bottom:1px solid var(--rule)}
  .price td{border:0;padding:0!important}
  .price .ph{grid-column:1/-1;width:auto}
  .price .ph:empty{display:none!important}
  .price .ph + .art{grid-row:2}
  .price .ph:not(:empty) ~ .num{grid-row:2}
  .price .art{grid-column:1}
  .price .num{grid-column:2;grid-row:1}
  .price .name{grid-column:1/-1;min-width:0}
  .price .stock{grid-column:1;text-align:left;align-self:center}
  .price .stock::before{content:"Остаток ";color:var(--ink-3)}
  .price .opts{grid-column:1/-1;flex-direction:row}
  .price .buy{grid-column:2}
  .order{padding:20px 16px 80px}
  .to-order{display:block;position:fixed;left:16px;right:16px;bottom:12px;padding:12px;border:0;
    background:var(--mark);color:var(--mark-ink);font-weight:600;cursor:pointer;z-index:10}
}