/* 壳层:顶栏 / 大下拉 / 抽屉 / 页脚 / cookie / 悬浮 / 弹窗.源自原型 */
.top{position:sticky;top:0;z-index:50;background:#000;color:#fff;height:56px}
.top .c{height:100%;display:flex;align-items:center;gap:10px}
.logo{font-weight:700;font-size:20px;letter-spacing:.2px;white-space:nowrap;display:inline-flex;align-items:center;gap:7px}
.logo small{font-weight:500;font-size:12px;color:#bbb;margin-left:6px}
.top .sp{flex:1}
.tools{display:flex;align-items:center;gap:2px}
.tools .tx{font-size:13px;font-weight:500;color:#ddd;padding:0 8px;height:36px;display:none;align-items:center;gap:4px;border-radius:8px;white-space:nowrap}
.tools .tx:hover{background:rgba(255,255,255,.1);color:#fff}
.tools .tx svg{width:12px;height:12px}
@media(min-width:768px){.tools .tx{display:inline-flex}}
.nav{display:none;height:100%;margin-left:14px}
/* 1260–1599 收紧顶栏(原型原样;#themeBtn → .hb.theme) */
@media(min-width:1440px) and (max-width:1599px){.nav{margin-left:6px}.nav .g>a{padding:0 5px;font-size:13.5px}.tools{gap:0}.tools .tx{padding:0 5px}.tools .hb{width:32px}}
@media(min-width:1260px) and (max-width:1439px){.nav{margin-left:6px}.nav .g>a{padding:0 4px;font-size:13px}.nav .g>a svg{width:9px;height:9px}.tools{gap:0}.tools .tx{padding:0 5px}.tools .tx span{display:none}.tools .hb.theme{display:none}}
.nav .g{position:relative;height:100%;display:flex;align-items:center}
.nav .g>a{padding:0 10px;height:100%;display:flex;align-items:center;gap:3px;font-size:14px;font-weight:500;color:var(--topbar-ink);white-space:nowrap}
.nav .g>a svg{width:11px;height:11px;opacity:.7;transition:transform .26s cubic-bezier(.22,.61,.36,1)}
.nav .g:hover>a svg,.nav .g:has(:focus-visible)>a svg{transform:rotate(180deg);opacity:1}
.nav .g:hover>a{color:#fff}.nav .g.on>a{color:#fff;font-weight:600;box-shadow:inset 0 -2px 0 #fff}  /* 交互状态统一(260927):黑顶栏悬停白字、选中白字 + 白下划线 */
/* 开合动效照原型 L44-48;限高 = 视口剩余高度并可滚动(第 4 稿两条储能路线 6 张卡,内容 812px) */
.mm{position:fixed;left:0;right:0;top:56px;background:var(--surface);color:var(--ink);border-bottom:1px solid var(--line);box-shadow:0 14px 34px rgba(0,0,0,.14);z-index:55;overflow:hidden;max-height:0;opacity:0;visibility:hidden;padding:0 0;transition:max-height .28s cubic-bezier(.22,.61,.36,1),padding .28s cubic-bezier(.22,.61,.36,1),opacity .16s ease,visibility 0s .28s}
.nav .g:hover .mm,.nav .g:has(:focus-visible) .mm{max-height:calc(100vh - 56px);overflow-y:auto;overscroll-behavior:contain;opacity:1;visibility:visible;padding:28px 0 34px;transition:max-height .3s cubic-bezier(.22,.61,.36,1),padding .3s cubic-bezier(.22,.61,.36,1),opacity .2s ease .04s,visibility 0s}
.mm .c{transform:translateY(-6px);opacity:.6;transition:transform .3s cubic-bezier(.22,.61,.36,1),opacity .24s ease}
.nav .g:hover .mm .c,.nav .g:has(:focus-visible) .mm .c{transform:none;opacity:1}
@media(prefers-reduced-motion:reduce){.mm,.mm .c,.nav .g>a svg{transition:none}}
.mm .c{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:30px;align-items:start}
.mm h5{font-size:12px;font-weight:600;color:var(--ink-3);margin-bottom:10px;letter-spacing:.3px}
.mm .d{font-size:13px;line-height:1.55;color:var(--ink-2);white-space:pre-line;margin-bottom:8px}
.mm a.it{display:block;padding:6px 0;font-size:14px;font-weight:500;line-height:1.4}
.mm a.it small{display:block;font-size:12px;color:var(--ink-3);font-weight:400}
.mm a.it:hover{color:var(--accent)}
.mm a.it.more{color:var(--accent)}
/* 安全准则链接(第 4 稿 A4 D4.1:产品详情页 + 购买弹层) */
.sgl{font-size:12.5px;margin-top:2px}.sgl-store{margin-top:8px}
/* 下拉图卡(第 4 稿 A1 D3 / A2 D3 / A3 D3,原型 cards3) */
.mm .cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px 8px;margin-bottom:10px}
.mm .cards3 .noimg{display:flex;align-items:center;justify-content:center;width:100%;aspect-ratio:4/3;background:var(--surface-2);border:1px dashed var(--line-strong);border-radius:4px;font-size:11px;color:var(--ink-3)}
.mm .cards3 a{display:flex;flex-direction:column;min-width:0}
.mm .cards3 img{width:100%;aspect-ratio:4/3;object-fit:contain;background:var(--surface-2);border-radius:4px;mix-blend-mode:multiply;display:block}  /* 统一缩略图(app/site/nav_thumbs.py)整张显示,不裁 */
.mm .cards3 b{font-size:13px;font-weight:500;margin-top:6px;line-height:1.3}
.mm .cards3 span{font-size:11px;color:var(--ink-3);line-height:1.35;margin-top:2px}  /* 第 4 稿 A1 D4:卖点和参数行都露出,不截断 */
.mm .cards3 a:hover b{color:var(--accent)}
.nav .g[data-id="products"] .mm .c,.nav .g[data-id="accessories"] .mm .c,.nav .g[data-id="consumables"] .mm .c{grid-template-columns:repeat(3,1fr);row-gap:26px}
.dd{position:relative}
.dd .pn{display:none;position:absolute;right:0;top:100%;margin-top:4px;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:8px;min-width:190px;box-shadow:0 12px 30px rgba(0,0,0,.14);z-index:60;transform:translateY(-6px);opacity:0;visibility:hidden;transition:opacity .16s ease,transform .22s cubic-bezier(.22,.61,.36,1),visibility 0s .22s}
.dd:hover .pn,.dd:has(:focus-visible) .pn{opacity:1;visibility:visible;transform:none;transition:opacity .18s ease,transform .22s cubic-bezier(.22,.61,.36,1),visibility 0s}
.dd>a svg:last-child{transition:transform .26s cubic-bezier(.22,.61,.36,1)}
.dd:hover>a svg:last-child,.dd:has(:focus-visible)>a svg:last-child{transform:rotate(180deg)}.dd:hover .pn{display:block}
.dd .pn a{display:flex;justify-content:space-between;gap:14px;padding:8px 10px;border-radius:6px;font-size:13px}
.dd .pn a:hover{background:var(--state-hover)}
.dd .pn a small{color:var(--ink-3)}
.sbar{display:none;position:absolute;left:0;right:0;top:56px;background:var(--surface);color:var(--ink);border-bottom:1px solid var(--line);padding:12px 0;z-index:54}
.sbar.open{display:block}
.sbar .c{display:flex;gap:8px;align-items:center}
.sbar input{flex:1;height:42px;border:1px solid var(--line-strong);border-radius:6px;padding:0 14px;font:inherit;font-size:15px;background:var(--surface);color:var(--ink)}
.sbar .hint{display:none;font-size:12px;color:var(--ink-3)}
@media(min-width:768px){.sbar .hint{display:block}}
@media(min-width:1100px){.nav{display:flex}.hb.menu{display:none}}
/* 导航放不下容器时由脚本量宽收起为汉堡(中英共用一套,按实际宽度自适应) */
html.nav-tight .nav{display:none}
html.nav-tight .hb.menu{display:flex}
.drawer{position:fixed;inset:0;z-index:60;display:none}
.drawer.open{display:block}
.drawer .mask{position:absolute;inset:0;background:rgba(0,0,0,.45)}
.drawer .panel{position:absolute;top:0;left:0;bottom:0;width:86%;max-width:360px;background:var(--surface);padding:14px 16px 40px;overflow:auto}
.drawer .grp>button{width:100%;display:flex;justify-content:space-between;align-items:center;padding:13px 4px;border-bottom:1px solid var(--line);font-size:15px;font-weight:600;text-align:left}
.drawer .grp>button svg{transition:transform .2s}
.drawer .grp.open>button svg{transform:rotate(180deg)}
.drawer .grp .sub{display:block;max-height:0;overflow:hidden;padding:0;border-bottom:1px solid var(--line);opacity:0;transition:max-height .28s cubic-bezier(.22,.61,.36,1),padding .28s,opacity .2s}.drawer .grp.open .sub{max-height:2400px;padding:6px 0 10px;opacity:1}
.drawer .sub h6{font-size:11px;font-weight:600;color:var(--ink-3);padding:8px 4px 2px}
.drawer .sub a{display:block;padding:8px 4px 8px 14px;font-size:14px;color:var(--ink-2)}
.drawer .sub a .dek{display:block;font-size:12px;color:var(--ink-3)}  /* 抽屉卡片卖点(原型 dCard small) */
.drawer .quick{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 6px}
footer{background:#000;color:#9E9E9E;padding:40px 0 24px;font-size:13px}
footer h4{color:#fff;font-size:14px;margin-bottom:8px}
.fcols{padding:8px 0}
.fcol{border-bottom:1px solid #2A2A2A}
.fcol>button{width:100%;display:flex;justify-content:space-between;padding:12px 0;color:#fff;font-weight:600;font-size:14px}
.fcol ul{display:block;list-style:none;max-height:0;overflow:hidden;padding-bottom:0;opacity:0;transition:max-height .28s cubic-bezier(.22,.61,.36,1),padding .28s,opacity .2s}
.fcol.open ul{max-height:520px;padding-bottom:10px;opacity:1}
.fcol>button svg{transition:transform .26s cubic-bezier(.22,.61,.36,1)}
.fcol.open>button svg{transform:rotate(180deg)}
.fcol li{padding:5px 0}
.fcol li a:hover{color:#fff}
.fcol.brand{border:0;padding:14px 0 6px}
.fcol.brand b{color:#fff;font-size:15px;display:block}
.fcol.brand p{margin:6px 0 12px;line-height:1.6}
.fcol.brand form{display:flex}
.fcol.brand input{flex:1;height:34px;border:1px solid #333;background:#111;color:#fff;border-radius:4px 0 0 4px;padding:0 10px;font:inherit;min-width:0}
.fcol.brand button{height:34px;padding:0 10px;background:#222;color:#fff;border-radius:0 4px 4px 0}
.flegal{display:flex;flex-wrap:wrap;gap:6px 18px;padding:16px 0 10px;border-top:1px solid #2A2A2A}
.flegal a:hover{color:#fff}
.fsoc{display:flex;flex-wrap:wrap;gap:6px 14px;padding-bottom:12px}
.fsoc span{color:#666}
.fsoc a:hover{color:#fff}
.fbot{display:flex;flex-direction:column;gap:8px;padding-top:14px;border-top:1px solid #2A2A2A;font-size:12px;color:#8a8a8a}
.fbot .warn{color:#b9b9b9}
@media(min-width:768px){.fcols{display:grid;grid-template-columns:repeat(4,1fr);gap:20px 16px;padding:26px 0 18px}.fcol{border:0}.fcol>button{pointer-events:none;padding:0 0 8px}.fcol>button svg{display:none}.fcol ul{display:block;max-height:none;opacity:1;overflow:visible}.fcol.brand{grid-column:span 4;padding:0}}
@media(min-width:1100px){.fcols{grid-template-columns:2fr repeat(7,1fr)}.fcol.brand{grid-column:span 1;padding-right:20px}}
.cookie{position:fixed;left:12px;right:12px;bottom:12px;z-index:40;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:0 8px 28px rgba(0,0,0,.18);font-size:12px}
.cookie b{display:block;margin-bottom:6px;font-size:14px;font-weight:600}
.cookie .btn-sm{height:34px;border-radius:999px;font-size:12.5px;font-weight:500;padding:0 16px}
.cookie .row{display:flex;justify-content:flex-end;gap:8px;align-items:center;margin-top:8px}
.cookie .row a{text-decoration:underline;color:var(--ink-2)}
@media(min-width:768px){.cookie{left:24px;right:auto;top:auto;bottom:24px;width:400px;padding:18px}}
.float{position:fixed;right:14px;bottom:20px;z-index:40;display:flex;flex-direction:column;gap:8px;align-items:flex-end}
.float button{display:flex;align-items:center;gap:8px;height:44px;padding:0 13px;border-radius:22px;background:var(--ink);color:var(--bg);font-size:13px;font-weight:500;box-shadow:0 6px 20px rgba(0,0,0,.18);transition:transform .15s}
.float button:hover{transform:translateY(-2px)}
.float button span{display:none}
@media(min-width:768px){.float button span{display:inline}}
.float button.top{background:var(--surface);color:var(--ink);display:none}
.float.scrolled button.top{display:flex}
.float .cp{position:absolute;right:0;bottom:calc(100% + 8px);width:280px;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px;font-size:13px;display:none;box-shadow:0 12px 30px rgba(0,0,0,.16);text-align:left}
.float .cp.open{display:block}
.float .cp b{display:block;font-size:14px;margin-bottom:6px}
.float .cp div{padding:6px 0;border-top:1px solid var(--line);color:var(--ink-2)}
.float .cp div a{color:var(--accent)}
.modal{position:fixed;inset:0;z-index:80;display:none;align-items:center;justify-content:center;padding:16px}
.modal.open{display:flex}
.modal .mask{position:absolute;inset:0;background:rgba(0,0,0,.5)}
.modal .box{position:relative;width:100%;max-width:560px;max-height:92vh;overflow:auto;background:var(--surface);border-radius:12px;padding:22px}
.modal .box>.hd{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;margin-bottom:12px}
.modal h3{font-size:18px}
.modal .box .faint{display:block;margin-top:2px}
/* 原型行内样式转类 */
.tools .tx .ico.u{width:16px;height:16px}
.hb.lang{font-size:12px;font-weight:600}  /* 260927:文字 ZH 换成地球图标(与社区一致),点开仍是语言下拉 */
.lang-wrap{position:relative}
.lang-menu{display:none;position:absolute;right:0;top:calc(100% + 6px);min-width:132px;margin:0;padding:6px 0;list-style:none;background:var(--bg);border:1px solid var(--line);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.08);z-index:60}
.lang-wrap.open .lang-menu{display:block}
.lang-menu a{display:block;padding:8px 14px;font-size:13px;color:var(--ink);text-decoration:none;white-space:nowrap}
.lang-menu a:hover{background:var(--state-hover)}.lang-menu a[aria-current="true"],.lang-menu a[aria-current="true"]:hover{background:var(--state-selected);font-weight:600}
.sbar .hb{color:var(--ink)}
.drawer .hd{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}
.drawer .hd .logo{color:var(--ink)}
.drawer .hd .logo small{color:var(--ink-3)}
.drawer .hd .hb{color:var(--ink)}
.drawer .sub a.into{color:var(--accent);padding-left:4px}
.modal .stores{gap:10px}
.modal .box .chan{margin-top:14px}
.modal .done{margin-top:18px}