:root{--bg:#f2f3f5;--card:#fff;--ink:#1a1a1a;--mut:#5c6166;--line:#e3e5e8;--brand:#0072B1;--brand2:#005C8F;--logo:#0086C9;--soft:#e8f6fd}
*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif}
a{color:var(--brand)}img{max-width:100%}
.wrap{max-width:1280px;margin:0 auto;padding:0 16px}
.bar{background:#fff;border-bottom:1px solid var(--line);font-size:13px;color:var(--mut)}.bar .wrap{display:flex;gap:20px;height:34px;align-items:center}.bar a{margin-left:auto;padding:8px 0;color:var(--ink);font-weight:600;text-decoration:none}
header.top{background:#fff;padding:14px 0;position:sticky;top:0;z-index:20;box-shadow:0 1px 0 var(--line)}
header.top .wrap{display:flex;gap:16px;align-items:center}
.logo{font-weight:800;font-size:22px;white-space:nowrap;color:var(--ink);text-decoration:none}.logo b{color:var(--logo)}
.catb{background:var(--brand);color:#fff;border-radius:10px;height:44px;padding:0 18px;display:flex;align-items:center;gap:10px;font-weight:600;white-space:nowrap;text-decoration:none}.catb:hover{background:var(--brand2)}
.catb i{width:16px;height:2px;background:#fff;box-shadow:0 -5px 0 #fff,0 5px 0 #fff;display:block}
.search{flex:1;position:relative}.search .bx{display:flex;border:2px solid var(--brand);border-radius:10px;overflow:hidden;height:44px;background:#fff}
.search input{flex:1;border:0;padding:0 14px;font:inherit;outline:0;min-width:0}.search button{border:0;background:var(--brand);color:#fff;font:600 15px -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;padding:0 20px;cursor:pointer}
#res{background:#fff;border-radius:10px;box-shadow:0 8px 30px rgba(0,0,0,.15);display:none;position:absolute;left:0;right:0;top:50px;z-index:30;overflow:hidden}
#res a{display:block;padding:10px 16px;text-decoration:none;color:var(--ink);border-top:1px solid var(--line)}#res a:first-child{border-top:0}#res a:hover{background:var(--bg)}#res small{color:var(--mut);display:block}
.hl{display:flex;gap:18px;font-size:14px;white-space:nowrap}.hl a{display:flex;flex-direction:column;align-items:center;color:var(--ink);text-decoration:none}.hl a:hover b{color:var(--brand2)}.hl small{color:var(--mut);font-size:12px}
main{padding:16px 0 40px}
.box,.doc,.item{background:var(--card);border-radius:14px;padding:20px}
.home{display:grid;grid-template-columns:260px minmax(0,1fr);gap:16px}
aside .box{padding:8px 0;position:sticky;top:150px}aside h3{margin:8px 16px 6px;font-size:15px}
aside ul{list-style:none;margin:0;padding:0}aside li a{display:flex;justify-content:space-between;gap:8px;padding:8px 16px;font-size:14px;color:var(--ink);text-decoration:none}aside li a:hover{background:var(--bg);color:var(--brand2)}aside li a span{color:var(--mut);font-size:13px}
aside .all{display:block;padding:10px 16px 6px;font-weight:600;font-size:14px;text-decoration:none}
.hero{display:grid;grid-template-columns:1.4fr 1fr;gap:16px}
.ask{background:var(--soft);border-radius:14px;padding:24px}.ask h1{margin:0 0 8px;font-size:26px;line-height:1.2}.ask p{margin:0 0 16px;color:#333}
.adv{display:grid;grid-template-columns:1fr 1fr;gap:10px}.adv div{background:#fff;border-radius:14px;padding:14px 16px}.adv b{display:block;font-size:16px}.adv span{color:var(--mut);font-size:13px}
h1{font-size:26px;line-height:1.2;margin:4px 0 12px}h2{font-size:22px;margin:24px 0 12px;line-height:1.25}
.btns{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 8px}
.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 20px;border-radius:10px;background:var(--brand);color:#fff;font-weight:600;text-decoration:none;border:1px solid var(--brand)}.btn:hover{background:var(--brand2);border-color:var(--brand2)}
.btn.ghost{background:#fff;color:var(--ink);border-color:var(--line)}.btn.ghost:hover{border-color:var(--brand);color:var(--brand2);background:#fff}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.c{background:#fff;border-radius:14px;padding:12px;display:flex;flex-direction:column;gap:6px;transition:box-shadow .15s}.c:hover{box-shadow:0 4px 18px rgba(0,0,0,.08)}
.c .im{height:170px;display:flex;align-items:center;justify-content:center}.c img{max-height:160px;object-fit:contain}
.ni{width:100%;height:160px;background:var(--bg);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--mut);font-size:13px}
.c .pr{font-size:20px;font-weight:700}.c .pr.q{font-size:15px;color:var(--mut);font-weight:600}
.c .t{font-size:14px;line-height:1.35;min-height:38px;color:var(--ink);text-decoration:none}.c .t:hover{color:var(--brand2)}.c .pn{font-size:12px;color:var(--mut)}
.c .b{margin-top:auto;border:1.5px solid var(--brand);color:var(--brand2);text-align:center;border-radius:10px;padding:9px;font-weight:600;font-size:14px;text-decoration:none}.c .b:hover{background:var(--brand);color:#fff}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}.two h2{margin-top:0}
.crumbs{font-size:13px;color:var(--mut);margin:0 0 12px}.crumbs a{color:var(--mut)}
.tag{font-size:13px;color:var(--mut)}
.note{color:var(--mut);font-size:13px}
.doc h2{font-size:20px}
.item{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:24px}
.item .ph{background:#fff;border:1px solid var(--line);border-radius:12px;display:flex;align-items:center;justify-content:center;min-height:320px;padding:16px}.item .ph img{max-height:300px;object-fit:contain}
span.pn{font-family:ui-monospace,Menlo,monospace;background:var(--bg);padding:2px 8px;border-radius:6px}
.fits{border-top:1px solid var(--line);padding:12px 0;margin:12px 0}.fits ul{margin:6px 0 0;padding-left:18px}
.price{margin:14px 0;padding:16px;background:var(--bg);border-radius:12px}.price b{font-size:30px}.price small{color:var(--mut);line-height:1.5}
.guar{font-size:14px;font-weight:600;margin:4px 0 6px}
.alist{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:0 24px;margin-bottom:22px}
.alist a{border-bottom:1px solid var(--line);padding:9px 0;text-decoration:none;color:var(--ink);font-size:15px;display:flex;justify-content:space-between;gap:8px}.alist a:hover{color:var(--brand2)}.alist small{color:var(--mut)}
table.pt{width:100%;border-collapse:collapse;margin-top:14px;font-size:14px}
table.pt th,table.pt td{text-align:left;padding:10px 12px 10px 0;border-bottom:1px solid var(--line);vertical-align:top}table.pt th{font-size:12px;color:var(--mut);font-weight:600}
table.pt td.pn{white-space:nowrap;font-family:ui-monospace,Menlo,monospace;font-size:13px}table.pt small{color:var(--mut)}table.pt a{text-decoration:none}table.pt a:hover{text-decoration:underline}table.pt td:last-child{font-weight:700;white-space:nowrap}
header.top{padding:14px 0 0}
nav.sect{border-top:1px solid var(--line);margin-top:14px}nav.sect .wrap{display:flex;gap:28px;height:44px;align-items:center;overflow-x:auto;white-space:nowrap}
nav.sect a{color:var(--ink);text-decoration:none;font-weight:600;font-size:15px}nav.sect a:hover{color:var(--brand2)}
.secs{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:16px}
.secs a{background:#fff;border-radius:14px;padding:16px;text-decoration:none;color:var(--ink);display:flex;flex-direction:column;gap:6px;border:1px solid transparent}.secs a:hover{border-color:var(--brand)}
.secs b{font-size:17px}.secs span{color:var(--mut);font-size:14px}.secs em{font-style:normal;color:var(--brand2);font-weight:600;font-size:14px;margin-top:auto}
.doc ul{padding-left:20px}.doc li{margin-bottom:6px}.doc h2{margin-top:24px}
footer{background:#fff;border-top:1px solid var(--line);padding:28px 0;font-size:13px;color:var(--mut)}
footer a{color:var(--ink);display:inline-block;padding:5px 0}footer b{color:var(--ink)}footer .cols{display:grid;gap:24px;grid-template-columns:repeat(4,1fr)}
.tm{font-size:12px;color:var(--mut);margin-top:18px}
@media(max-width:600px){table.pt td.pn{white-space:normal;word-break:break-all}table.pt th,table.pt td{padding-right:8px}}
@media(max-width:900px){.secs{grid-template-columns:1fr 1fr}nav.sect .wrap{gap:14px;height:40px}nav.sect a{font-size:13px}.home,.hero,.two,.item{grid-template-columns:1fr}aside{display:none}.hl{display:none}.bar span{display:none}
header.top .wrap{flex-wrap:wrap}.search{order:3;flex-basis:100%}.catb{margin-left:auto}.grid{grid-template-columns:1fr 1fr;gap:8px}.c .im{height:130px}.c img{max-height:120px}.c .pr{font-size:17px}
.item .ph{min-height:200px}footer .cols{grid-template-columns:1fr 1fr}h1,.ask h1{font-size:22px}}