/* ============================================================
   Mousemi Electronics — Global Design System
   主色 #1B3D6E（Logo蓝）· 辅色银灰 · 页面底 #F2F3F5
   ============================================================ */
:root{
  --blue:#1B3D6E;
  --blue-lt:#2E5FA3;
  --blue-bg:#EAF0F8;
  --blue-line:#C9D6E8;
  --ink:#22262E;
  --ink-2:#3A4250;
  --ink-3:#7A8290;
  --ink-4:#A6ACB8;
  --line:#E2E4E9;
  --line-2:#EDEEF1;
  --bg:#F2F3F5;
  --bg-top:#FBFBFC;
  --card:#FFFFFF;
  --eol:#B4530A;
  --eol-bg:#F7F3EC;
  --eol-line:#E5D9C4;
  --ok:#3B6D11;
  --ok-bg:#EAF3DE;
  --ok-line:#C0DD97;
  --low:#B4530A;
  --low-bg:#FAEEDA;
  --low-line:#F0D9A8;
  --none:#7A8290;
  --none-bg:#EFF0F2;
  --none-line:#D8DAE0;
  --radius:10px;
  --radius-sm:8px;
  --shadow:0 1px 3px rgba(20,30,50,.06);
  --shadow-lg:0 6px 24px rgba(20,30,50,.10);
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:"Segoe UI","Helvetica Neue",Arial,"Microsoft YaHei","PingFang SC",sans-serif;
  background:var(--bg);color:var(--ink);font-size:14px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}
.hidden{display:none !important;}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);}

/* ---------- Topbar ---------- */
.topbar{display:flex;justify-content:space-between;align-items:center;padding:8px 0;font-size:12px;color:var(--ink-3);border-bottom:1px solid var(--line);background:var(--bg-top);}
.topbar .container{display:flex;justify-content:space-between;align-items:center;}
.topbar a{color:var(--ink-3);margin-left:16px;}
.topbar a:hover{color:var(--blue);}
.topbar a.hl{color:var(--blue);font-weight:600;}

/* ---------- Header ---------- */
.header{background:var(--bg-top);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;}
.header .container{display:flex;align-items:center;gap:22px;padding-top:18px;padding-bottom:18px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo .mark{background:var(--blue);color:#fff;padding:10px 14px;border-radius:6px;line-height:1;text-align:center;}
.logo .mark b{font-size:18px;letter-spacing:2.5px;display:block;}
.logo .mark span{font-size:8.5px;letter-spacing:4.5px;opacity:.85;display:block;margin-top:3px;}
.logo .logo-img{height:42px;width:auto;max-width:230px;object-fit:contain;display:block;}
.logo .logo-img-foot{height:38px;}
.searchbox{flex:1;display:flex;border:1.5px solid var(--blue);border-radius:var(--radius-sm);overflow:hidden;background:#fff;}
.searchbox select{border:none;border-right:1px solid var(--line);padding:0 12px;font-size:12.5px;color:var(--ink-2);background:#FAFBFC;outline:none;}
.searchbox input{flex:1;border:none;padding:12px 16px;font-size:13.5px;outline:none;color:var(--ink);min-width:0;}
.searchbox input::placeholder{color:var(--ink-4);}
.searchbox button{background:var(--blue);color:#fff;border:none;padding:0 30px;font-size:13.5px;}
.searchbox button:hover{background:var(--blue-lt);}
.btn-quote{background:var(--blue);color:#fff;font-size:13px;padding:10px 20px;border-radius:var(--radius-sm);white-space:nowrap;font-weight:600;text-align:center;line-height:1.25;}
.btn-quote small{display:block;font-weight:400;font-size:10px;opacity:.8;}
.btn-quote:hover{background:var(--blue-lt);}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:6px;padding:8px 12px;font-size:18px;color:var(--blue);}

/* ---------- Nav ---------- */
.nav{background:var(--bg-top);border-bottom:1px solid var(--line);}
.nav .container{display:flex;gap:2px;font-size:13.5px;flex-wrap:wrap;}
.nav a{padding:11px 16px;border-radius:var(--radius-sm) var(--radius-sm) 0 0;color:var(--ink-2);}
.nav a:hover{color:var(--blue);background:#F4F7FB;}
.nav a.on{color:var(--blue);font-weight:600;box-shadow:inset 0 -2px 0 var(--blue);}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:var(--radius-sm);font-size:13.5px;font-weight:600;padding:11px 22px;transition:.15s;}
.btn-primary{background:var(--blue);color:#fff;}
.btn-primary:hover{background:var(--blue-lt);}
.btn-outline{background:#fff;color:var(--blue);border:1.5px solid var(--blue);}
.btn-outline:hover{background:var(--blue-bg);}
.btn-ghost{background:#fff;color:var(--ink-2);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--blue-line);color:var(--blue);}
.btn-sm{padding:7px 14px;font-size:12.5px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.5;cursor:not-allowed;}

/* ---------- Cards / Sections ---------- */
.section{padding:30px 0;}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:16px;}
.sec-head h2{font-size:19px;font-weight:600;}
.sec-head h2 small{display:block;font-size:12.5px;color:var(--ink-3);font-weight:400;margin-top:3px;}
.sec-head a{font-size:12.5px;color:var(--blue);font-weight:600;}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;}
.card-h{font-size:15px;font-weight:600;margin-bottom:12px;}

/* ---------- Badges / Status ---------- */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:11.5px;font-weight:600;padding:3px 10px;border-radius:20px;}
.badge .dot{width:6px;height:6px;border-radius:50%;}
.b-ok{background:var(--ok-bg);color:var(--ok);}
.b-ok .dot{background:var(--ok);}
.b-low{background:var(--low-bg);color:var(--low);}
.b-low .dot{background:var(--low);}
.b-none{background:var(--none-bg);color:var(--none);}
.b-none .dot{background:var(--none);}
.b-eol{background:var(--eol-bg);color:var(--eol);border:1px solid var(--eol-line);}
.b-blue{background:var(--blue-bg);color:var(--blue);border:1px solid var(--blue-line);}

/* ---------- Category side ---------- */
.cats{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.cats .cat-h{padding:12px 18px;font-size:11.5px;letter-spacing:1px;color:var(--ink-3);border-bottom:1px solid var(--line);background:#FAFBFC;font-weight:600;}
.cats a{display:flex;justify-content:space-between;align-items:center;padding:10px 18px;font-size:13px;color:var(--ink-2);border-bottom:1px solid var(--line-2);}
.cats a:last-child{border-bottom:none;}
.cats a:hover{color:var(--blue);background:#F7F9FC;}
.cats a em{font-style:normal;font-size:10.5px;color:var(--ink-4);margin-left:auto;margin-right:6px;}
.cats a i{font-style:normal;color:#C2C7D0;font-size:11px;}

/* ---------- Hero (home) ---------- */
.hero{display:grid;grid-template-columns:250px 1fr;gap:16px;padding:24px 0 6px;}
.hero-card{background:var(--blue-bg);border:1px solid var(--blue-line);border-radius:var(--radius);padding:34px 38px;position:relative;overflow:hidden;}
.hero-card .grid-bg{position:absolute;inset:0;background-image:radial-gradient(#C9D8EC 1px,transparent 1px);background-size:20px 20px;opacity:.5;}
.hero-card>*{position:relative;}
.hero-card .kicker{font-size:11px;letter-spacing:2px;color:var(--blue-lt);font-weight:600;margin-bottom:10px;}
.hero-card h1{font-size:28px;font-weight:600;color:var(--blue);line-height:1.28;margin-bottom:10px;}
.hero-card h1 span{color:var(--ink);font-weight:400;}
.hero-card p{font-size:13px;color:var(--ink-3);margin-bottom:18px;max-width:440px;}
.chips{display:flex;gap:8px;flex-wrap:wrap;}
.chips span{background:#fff;border:1px solid var(--blue-line);color:var(--blue);font-size:11.5px;padding:6px 14px;border-radius:16px;cursor:pointer;}
.chips span:hover{background:var(--blue);color:#fff;border-color:var(--blue);}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:14px;}
.hero-stats .stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px;}
.hero-stats .stat b{font-size:18px;color:var(--blue);display:block;}
.hero-stats .stat span{font-size:11px;color:var(--ink-3);}

/* ---------- Brand grid ---------- */
.brands{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;}
.brands a{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);text-align:center;padding:18px 4px;font-size:11.5px;font-weight:600;color:var(--ink-2);letter-spacing:.3px;}
.brands a:hover{border-color:var(--blue-lt);color:var(--blue);box-shadow:var(--shadow);}
.brands a.brand-more{background:var(--blue);border-color:var(--blue);color:#fff;font-weight:700;}
.brands a.brand-more:hover{opacity:.9;color:#fff;}

/* ---------- Feature cards ---------- */
.feats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;}
.feat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;}
.feat .num{font-size:11px;font-weight:700;color:var(--blue-lt);letter-spacing:1px;margin-bottom:8px;}
.feat b{display:block;font-size:14px;margin-bottom:5px;}
.feat p{font-size:12px;color:var(--ink-3);}

/* ---------- EOL strip ---------- */
.eol-strip{background:var(--card);border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:var(--radius);padding:20px 24px;display:flex;align-items:center;gap:20px;}
.eol-strip .eb{background:var(--eol-bg);border:1px solid var(--eol-line);color:var(--eol);font-size:11px;font-weight:700;letter-spacing:1px;padding:6px 12px;border-radius:6px;white-space:nowrap;}
.eol-strip .txt{flex:1;}
.eol-strip .txt b{font-size:14px;display:block;margin-bottom:3px;}
.eol-strip .txt span{font-size:12px;color:var(--ink-3);}
.eol-strip .go{color:var(--blue);font-size:13px;font-weight:600;white-space:nowrap;}

/* ---------- Tables ---------- */
.tbl{width:100%;border-collapse:collapse;background:var(--card);font-size:13px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;}
.tbl th{background:#FAFBFC;color:var(--ink-3);text-align:left;padding:10px 14px;font-weight:600;font-size:12px;border-bottom:1px solid var(--line);white-space:nowrap;}
.tbl td{padding:11px 14px;border-bottom:1px solid var(--line-2);}
.tbl tr:last-child td{border-bottom:none;}
.tbl tbody tr:hover{background:#F7F9FC;}
.tbl .mpn{color:var(--blue);font-weight:600;}

/* ---------- Forms ---------- */
.field{margin-bottom:16px;}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--ink-2);margin-bottom:6px;}
.field label .req{color:#C0392B;}
.input,.select,.textarea{width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);padding:11px 14px;font-size:13.5px;color:var(--ink);background:#fff;outline:none;}
.input:focus,.select:focus,.textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-bg);}
.textarea{min-height:110px;resize:vertical;}
.field .hint{font-size:11.5px;color:var(--ink-4);margin-top:5px;}

/* ---------- Footer ---------- */
.footer{background:var(--bg-top);border-top:1px solid var(--line);margin-top:40px;padding:34px 0 24px;}
.footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr 1.3fr;gap:26px;padding-bottom:22px;border-bottom:1px solid var(--line);}
.footer h4{font-size:13px;color:var(--ink);margin-bottom:12px;}
.footer a,.footer p{font-size:12.5px;color:var(--ink-3);display:block;margin-bottom:7px;}
.footer a:hover{color:var(--blue);}
.footer .bottom{display:flex;justify-content:space-between;align-items:center;padding-top:18px;font-size:11.5px;color:var(--ink-3);}
.footer .langs span{margin-left:12px;cursor:pointer;}
.footer .langs span.on{color:var(--blue);font-weight:600;}

/* ---------- Breadcrumb / Page head ---------- */
.crumb{font-size:12.5px;color:var(--ink-3);padding:16px 0 0;}
.crumb a:hover{color:var(--blue);}
.page-head{padding:18px 0 6px;}
.page-head h1{font-size:22px;font-weight:600;}
.page-head p{color:var(--ink-3);font-size:13px;margin-top:4px;}

/* ---------- Product grid ---------- */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
.prod-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.15s;}
.prod-card:hover{border-color:var(--blue-line);box-shadow:var(--shadow-lg);transform:translateY(-2px);}
.prod-img{height:150px;background:#EEF1F5;position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;border-bottom:1px solid var(--line-2);}
.prod-body{padding:13px 15px;flex:1;display:flex;flex-direction:column;gap:6px;}
.prod-body .brand{font-size:11px;color:var(--ink-3);letter-spacing:.4px;font-weight:600;text-transform:uppercase;}
.prod-body .mpn{font-size:13.5px;font-weight:600;color:var(--ink);}
.prod-body .desc{font-size:11.5px;color:var(--ink-3);}
.prod-foot{padding:11px 15px;border-top:1px solid var(--line-2);display:flex;justify-content:space-between;align-items:center;gap:8px;}
.prod-foot .qty{font-size:12px;color:var(--ink-2);}
.prod-foot .qty b{color:var(--blue);}

/* ---------- Watermark overlay (产品图) ---------- */
.wm{position:relative;width:100%;height:100%;background:#EEF1F5;}
.wm .tile{position:absolute;inset:-30%;display:flex;flex-direction:column;justify-content:center;gap:26px;transform:rotate(-22deg);pointer-events:none;}
.wm .tile div{font-size:12px;letter-spacing:9px;color:rgba(27,61,110,.16);font-weight:700;white-space:nowrap;text-align:center;}
.wm .corner{position:absolute;right:8px;bottom:6px;font-size:9px;color:rgba(27,61,110,.5);font-weight:700;letter-spacing:.4px;}
.wm .chip-icon{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:46px;height:46px;border:2px solid #B9C2CE;border-radius:7px;background:#DDE2E9;}
.wm .prod-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#fff;}

/* ---------- Member gate ---------- */
.gate{position:absolute;inset:0;background:rgba(242,243,245,.72);backdrop-filter:blur(3px);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;padding:10px;}
.gate .lock{width:34px;height:34px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px;}
.gate b{font-size:12.5px;color:var(--ink);}
.gate .btn{padding:7px 16px;font-size:12px;}

/* ---------- Toggle switch ---------- */
.switch{position:relative;display:inline-block;width:46px;height:25px;flex-shrink:0;}
.switch input{opacity:0;width:0;height:0;}
.switch .track{position:absolute;inset:0;background:#C9CDD6;border-radius:25px;transition:.2s;}
.switch .track:before{content:"";position:absolute;width:19px;height:19px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s;}
.switch input:checked + .track{background:var(--blue);}
.switch input:checked + .track:before{transform:translateX(21px);}

/* ---------- Admin ---------- */
.admin-wrap{display:grid;grid-template-columns:220px 1fr;gap:20px;padding:24px 0 50px;}
.admin-nav{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:10px;height:fit-content;position:sticky;top:90px;}
.admin-nav a{display:block;padding:10px 14px;border-radius:var(--radius-sm);font-size:13px;color:var(--ink-2);margin-bottom:2px;}
.admin-nav a:hover{background:#F4F7FB;color:var(--blue);}
.admin-nav a.on{background:var(--blue);color:#fff;font-weight:600;}
.admin-main .card{margin-bottom:16px;}
.kv-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px solid var(--line-2);}
.kv-row:last-child{border-bottom:none;}
.kv-row .info b{font-size:13.5px;display:block;}
.kv-row .info span{font-size:12px;color:var(--ink-3);}

/* ---------- Utility ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
.flex{display:flex;}
.between{justify-content:space-between;}
.center{align-items:center;}
.gap8{gap:8px;}.gap12{gap:12px;}.gap16{gap:16px;}
.mt8{margin-top:8px;}.mt12{margin-top:12px;}.mt16{margin-top:16px;}.mt24{margin-top:24px;}
.muted{color:var(--ink-3);}
.small{font-size:12.5px;}
.strong{font-weight:600;}
.pagination{display:flex;gap:6px;justify-content:center;margin-top:24px;}
.pagination a{min-width:36px;height:36px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:var(--radius-sm);font-size:13px;color:var(--ink-2);background:#fff;padding:0 8px;}
.pagination a.on{background:var(--blue);color:#fff;border-color:var(--blue);}
.pagination a:hover:not(.on){border-color:var(--blue-line);color:var(--blue);}

/* ---------- Toast ---------- */
.toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;font-size:13px;padding:12px 22px;border-radius:var(--radius-sm);opacity:0;transition:.25s;z-index:200;box-shadow:var(--shadow-lg);}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .hero{grid-template-columns:1fr;}
  .cats{display:none;}
  .brands{grid-template-columns:repeat(3,1fr);}
  .prod-grid{grid-template-columns:repeat(2,1fr);}
  .feats{grid-template-columns:1fr;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .footer .cols{grid-template-columns:1fr 1fr;}
  .admin-wrap{grid-template-columns:1fr;}
  .admin-nav{position:static;display:flex;gap:4px;overflow-x:auto;}
  .admin-nav a{white-space:nowrap;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:680px){
  .header .container{flex-wrap:wrap;gap:12px;}
  .searchbox{order:3;width:100%;flex:1 0 100%;}
  .burger{display:block;margin-left:auto;}
  .nav .container{display:none;}
  .nav.open .container{display:flex;flex-direction:column;padding:8px 24px 14px;}
  .nav.open a{border-radius:var(--radius-sm);}
  .footer .cols{grid-template-columns:1fr;}
  .prod-grid{grid-template-columns:1fr;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .eol-strip{flex-direction:column;align-items:flex-start;}
  .hero-card{padding:24px 22px;}
  .hero-card h1{font-size:22px;}
}