/* LW Laser 产品页下拉导航样式（仅 .dd/.lw-sb 相关） */
.dd{position:relative}
.dd-t{display:flex;align-items:center;gap:5px;border:0;background:transparent;font:inherit;font-size:15px;font-weight:600;color:var(--steel);cursor:pointer;padding:6px 0}
.dd-t svg{width:12px;height:12px;transition:.2s}
.dd:hover .dd-t{color:var(--acc)}
.dd:hover .dd-t svg{transform:rotate(180deg)}
.dd-m{position:absolute;top:calc(100% + 8px);left:-16px;min-width:300px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 32px rgba(14,42,67,.14);padding:8px;opacity:0;visibility:hidden;transform:translateY(-6px);transition:.2s;z-index:70}
.dd:hover .dd-m{opacity:1;visibility:visible;transform:translateY(0)}
.dd-m a{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--txt)}
.dd-m a:hover{background:var(--bg);color:var(--acc)}
.dd-m a.on{background:var(--bg);color:var(--navy);font-weight:700}
.dd-m a b{color:var(--txt-2);font-weight:600;font-size:12px}
.dd-m .sep{height:1px;background:var(--line);margin:6px 4px}
.dd-m{min-width:340px}
.dd-br{border-top:1px solid rgba(148,163,184,.18)}
.dd-br:first-child{border-top:0}
.dd-br>summary{cursor:pointer;list-style:none;display:flex;align-items:center;gap:7px;
  padding:9px 12px;font-size:11px;letter-spacing:1px;text-transform:uppercase;
  color:#7c8da3;font-weight:800;border-radius:8px}
.dd-br>summary::-webkit-details-marker{display:none}
.dd-br>summary::before{content:"B8";font-size:10px;color:#2b93bf;transition:.15s}
.dd-br[open]>summary::before{content:"BE"}
.dd-br>summary:hover{background:rgba(43,147,191,.09)}
.dd-br[open]>summary{background:rgba(43,147,191,.06);color:#0e2a43}
.dd-lv2{padding:1px 0 7px;background:rgba(148,163,184,.06);border-radius:0 0 8px 8px}
.dd-ser{border-top:1px solid rgba(148,163,184,.14)}
.dd-ser>summary{cursor:pointer;list-style:none;display:flex;align-items:center;gap:8px;
  padding:7px 14px;font-size:13px;font-weight:600;color:#0e2a43}
.dd-ser>summary::-webkit-details-marker{display:none}
.dd-ser>summary::before{content:"B8";font-size:10px;color:#2b93bf;flex:0 0 auto}
.dd-ser[open]>summary::before{content:"BE"}
.dd-ser>summary:hover{background:rgba(43,147,191,.1)}
.dd-ser[open]>summary{color:#1e7ea8}
.dd-cat2>summary{font-weight:700;padding-left:10px}
.dd-lv3{padding:2px 0 6px 10px;background:rgba(255,255,255,.6)}
.dd-m .dd-lk{font-size:13px;padding:6px 14px}
.dd-m .dd-go{font-size:12.5px;font-weight:700;color:#1e7ea8;padding:5px 14px}
.dd-cnt{margin-left:auto;color:#64748b;font-weight:700;font-size:11.5px}
.dd-cnt0{margin-left:auto;color:#cbd5e1;font-weight:700;font-size:11.5px}
.dd-ml-l{max-height:300px;overflow:auto;overscroll-behavior:contain}
.dd-ml-l a{font-size:12.5px;font-weight:500;padding:4px 14px;border-radius:0;color:#334155}
.dd-ml-l a:hover{background:rgba(43,147,191,.12);color:#1e7ea8}
.dd-st{padding:6px 14px;font-size:12.5px;color:#64748b}
.dd-fam{padding:8px 12px 3px;font-size:10.5px;letter-spacing:1.2px;text-transform:uppercase;color:#94a3b8;font-weight:800;border-top:1px solid rgba(148,163,184,.18)}
.dd-sub>summary{padding-left:24px;font-size:12.5px;font-weight:500}
.dd-lv4{padding:2px 0 6px 20px;background:rgba(255,255,255,.6)}
.dd-pend{display:block;padding:5px 14px;font-size:12.5px;color:#475569}
.dd-fl{width:calc(100% - 20px);margin:4px 10px 6px;padding:6px 9px;font:inherit;font-size:12.5px;
  border:1px solid rgba(148,163,184,.5);border-radius:7px;outline:none;box-sizing:border-box}
.dd-fl:focus{border-color:#2b93bf}
#ddProd .dd-m{max-height:min(78vh,780px);overflow-y:auto;overscroll-behavior:contain}
@media(max-width:900px){#ddProd .dd-m{max-height:70vh;min-width:0}}
.dd.open .dd-m{opacity:1;visibility:visible;transform:translateY(0)}
.dd.open .dd-t{color:var(--acc)}
.dd.open .dd-t svg{transform:rotate(180deg)}