:root{--blue:#0B3D91;--ink:#17243b;--muted:#667085;--line:#e5eaf1;--bg:#f5f7fb;--white:#fff;--gold:#c58a32}
    *{box-sizing:border-box}html,body{margin:0;padding:0;color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg);line-height:1.7}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:#111d33;color:#dbe5f4;font-size:13px}.topbar .container{min-height:36px;display:flex;justify-content:space-between;align-items:center}.top-contact a{color:#fff}
    .header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}.header-inner{height:78px;display:flex;align-items:center;gap:30px}.logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--blue);white-space:nowrap}.logo img{width:38px;height:38px;object-fit:contain}.main-nav{margin-left:auto}.nav-list{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}.nav-item{position:relative}.nav-link{display:block;padding:27px 13px;font-size:14px;font-weight:700;white-space:nowrap}.nav-link:hover,.nav-link:focus{color:var(--blue)}.has-arrow:after{content:"⌄";font-size:12px;margin-left:5px;color:#8793a6}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%) translateY(8px);width:310px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:0 18px 45px #14213d1c;opacity:0;visibility:hidden;transition:.2s;z-index:50}.mega-menu{width:690px}.nav-item:hover .dropdown-panel,.nav-item:focus-within .dropdown-panel,.nav-item:hover .mega-menu,.nav-item:focus-within .mega-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}.nav-item:before{content:"";position:absolute;left:0;right:0;top:100%;height:12px}.drop-title,.mega-title{display:block;margin-bottom:12px;font-size:15px;color:var(--blue)}.drop-list{display:grid;gap:8px}.drop-list a{font-size:13px;color:#4d5a70}.drop-list a:hover{color:var(--blue)}.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mega-card{display:grid;gap:4px;padding:10px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe;min-width:0}.mega-card:hover{border-color:#9eb4d9;background:#f2f6fc}.mega-card img{width:100%;height:72px;object-fit:contain;border-radius:7px}.mega-card strong{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mega-card small{font-size:11px;line-height:1.45;color:var(--muted);display:block}.mega-footer{display:block;margin-top:15px;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--blue);font-weight:700}.header-btns{display:flex;align-items:center;gap:10px}.member-link{font-size:13px;color:var(--blue);white-space:nowrap}.open-account{background:var(--blue);color:#fff;padding:8px 15px;border-radius:7px;font-size:13px;font-weight:700;white-space:nowrap}.hamburger{display:none;border:0;background:none;padding:7px;cursor:pointer}.hamburger span{display:block;width:23px;height:2px;background:var(--ink);margin:5px 0;transition:.2s}.hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}.hamburger.active span:nth-child(2){opacity:0}.hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
    .drawer-overlay{display:none}.mobile-drawer{display:none}
    .product-page{padding:42px 0 70px}.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:22px}.breadcrumb a{color:var(--blue)}.product-hero{background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px;display:grid;grid-template-columns:330px minmax(0,1fr);gap:42px;align-items:center;box-shadow:0 12px 35px #193b6810}.product-cover{height:270px;border-radius:14px;background:linear-gradient(145deg,#eef4ff,#fff);border:1px solid #dbe5f3;display:flex;align-items:center;justify-content:center;padding:28px}.product-cover img{max-height:215px;object-fit:contain}.product-info h1{font-size:clamp(27px,4vw,42px);line-height:1.25;margin:0 0 12px;color:#13284c}.product-summary{font-size:17px;color:#526176;margin:0 0 22px}.product-meta{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}.meta-chip{background:#f0f5fd;color:var(--blue);padding:6px 12px;border-radius:999px;font-size:13px}.product-action{display:inline-block;background:var(--blue);color:#fff;padding:12px 24px;border-radius:8px;font-weight:700}.product-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:26px;margin-top:28px}.content-card,.related-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px}.section-title{font-size:22px;margin:0 0 22px;color:#152b50;border-left:4px solid var(--gold);padding-left:12px}.product-body{min-width:0;max-width:100%;overflow-x:auto;color:#46546b}.product-body img,.product-body table{max-width:100%}.product-body table{border-collapse:collapse}.product-body td,.product-body th{border:1px solid var(--line);padding:8px}.product-footnote{border-top:1px solid var(--line);margin-top:26px;padding-top:15px;color:#8590a1;font-size:13px}.related-list{display:grid;gap:13px}.related-item{display:grid;grid-template-columns:62px 1fr;gap:11px;padding-bottom:13px;border-bottom:1px solid var(--line)}.related-item:last-child{border-bottom:0;padding-bottom:0}.related-item img{width:62px;height:62px;border-radius:8px;object-fit:contain;background:#f3f6fb}.related-item strong{font-size:14px;display:block;line-height:1.4}.related-item small{display:block;color:var(--muted);font-size:12px;margin-top:4px}.product-label{font-size:12px;color:var(--gold);letter-spacing:1px;font-weight:800;margin-bottom:8px}.footer{background:#111d33;color:#c8d2e1;padding:46px 0 0}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:35px}.footer h3{color:#fff;font-size:15px;margin:0 0 13px}.footer p{font-size:13px;margin:5px 0;color:#aebbd0}.footer-grid>div>a{display:block;font-size:13px;margin:5px 0;color:#b9c5d8}.footer-grid>div>a:hover{color:#fff}.footer-brand strong{font-size:20px;color:#fff}.footer-bottom{border-top:1px solid #30405b;margin-top:35px;padding:17px 0;font-size:12px;color:#93a2bb}
    @media(max-width:980px){.main-nav{display:none}.hamburger{display:block}.header-btns{margin-left:auto}.mega-menu{width:min(690px,calc(100vw - 40px))}.product-layout{grid-template-columns:1fr 270px}}
    @media(max-width:720px){.container{width:min(100% - 28px,600px)}.topbar .container{display:block;padding:7px 0}.top-contact{display:block;margin-top:2px}.header-inner{height:68px;gap:10px}.member-link{display:none}.product-page{padding:25px 0 45px}.product-hero{grid-template-columns:1fr;padding:22px;gap:20px}.product-cover{height:210px}.product-layout{grid-template-columns:1fr}.content-card,.related-card{padding:21px}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.mobile-drawer{display:block;position:fixed;z-index:100;right:0;top:0;width:min(88vw,360px);height:100vh;background:#fff;transform:translateX(105%);transition:.25s;box-shadow:-10px 0 35px #07152c33;overflow:auto}.mobile-drawer.open{transform:translateX(0)}.drawer-overlay{position:fixed;inset:0;background:#07152c80;z-index:90;display:block;opacity:0;visibility:hidden;transition:.25s}.drawer-overlay.open{opacity:1;visibility:visible}.drawer-head{height:70px;padding:0 18px;display:flex;align-items:center;gap:14px;border-bottom:1px solid var(--line);font-weight:700}.drawer-head span{margin-right:auto;color:var(--blue)}.drawer-head a{font-size:13px;color:var(--blue)}.drawer-close{font-size:27px;border:0;background:none;color:#57657a;cursor:pointer}.drawer-menu{padding:12px 18px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf0f5;background:none;text-align:left;font:inherit;color:var(--ink);font-size:15px}.drawer-toggle:after{content:"＋";float:right;color:#8b98aa}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding:5px 0 8px 15px}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:8px 0;color:#66748a;font-size:13px}.mega-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:430px){.footer-grid{grid-template-columns:1fr}.open-account{padding:7px 10px}.product-info h1{font-size:28px}}