:root{--theme:#0B3D91;--ink:#12233f;--muted:#66748a;--line:#dbe4ef;--soft:#f4f7fb;--white:#fff;--shadow:0 16px 42px rgba(11,61,145,.12)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#fff;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.topbar{background:#092d69;color:#dbe8ff;font-size:13px}
.topbar .container{min-height:38px;display:flex;align-items:center;justify-content:space-between}
.top-contact{display:flex;gap:22px}
.top-contact a:hover{color:#fff}
.header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 4px 16px rgba(16,39,75,.04)}
.header-inner{height:78px;display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;font-size:19px;font-weight:800;color:var(--theme)}
.logo img{width:38px;height:38px;object-fit:contain}
.main-nav{flex:1}
.nav-list{display:flex;align-items:center;justify-content:center;gap:4px;margin:0;padding:0;list-style:none}
.nav-list>li{position:relative}
.nav-link{display:flex;align-items:center;gap:5px;padding:27px 13px;font-size:14px;font-weight:650;white-space:nowrap}
.nav-link:hover,.nav-link:focus{color:var(--theme)}
.has-arrow:after{content:"";width:6px;height:6px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg) translateY(-2px)}
.dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%);width:280px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
.nav-list>li:hover>.dropdown-panel,.nav-list>li:focus-within>.dropdown-panel,.nav-list>li:hover>.mega-menu,.nav-list>li:focus-within>.mega-menu{opacity:1;visibility:visible;pointer-events:auto}
.dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-10px;height:10px}
.mega-menu{width:650px}
.mega-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}
.mega-title{margin:3px 0 10px;color:var(--theme);font-size:13px;font-weight:800}
.mega-card{display:block;padding:9px 10px;border-radius:9px}
.mega-card:hover{background:#f0f5fc;color:var(--theme)}
.mega-card strong,.mega-card small{display:block}
.mega-card strong{font-size:13px}
.mega-card small,.meta{color:var(--muted);font-size:12px;line-height:1.55}
.mega-card img{display:inline-block;width:20px;height:20px;object-fit:contain;vertical-align:middle;margin-right:7px}
.mega-footer{display:inline-block;margin-top:10px;padding:8px 12px;background:var(--theme);border-radius:8px;color:#fff;font-size:12px}
.drop-item{display:block;padding:9px 10px;border-radius:8px;font-size:13px}
.drop-item:hover{background:#f0f5fc;color:var(--theme)}
.header-btns{display:flex;align-items:center;gap:9px;white-space:nowrap}
.member-btn,.account-btn{padding:8px 12px;border-radius:7px;font-size:13px}
.member-btn{color:var(--theme);border:1px solid #b8cbe8}
.account-btn{background:var(--theme);color:#fff}
.hamburger{display:none;width:40px;height:38px;border:1px solid var(--line);background:#fff;border-radius:8px;padding:8px;cursor:pointer}
.hamburger span{display:block;height:2px;margin:4px 0;background:var(--theme);transition:.2s}
.hamburger.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.drawer-overlay{position:fixed;inset:0;background:rgba(8,22,45,.45);opacity:0;visibility:hidden;z-index:40;transition:.2s}
.drawer-overlay.open{opacity:1;visibility:visible}
.mobile-drawer{position:fixed;z-index:41;top:0;right:0;width:min(370px,88vw);height:100vh;overflow:auto;background:#fff;transform:translateX(105%);transition:.25s;box-shadow:-10px 0 30px rgba(0,0,0,.15)}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;gap:12px;padding:18px 20px;border-bottom:1px solid var(--line);font-weight:800;color:var(--theme)}
.drawer-head>a{margin-left:auto;padding:5px 9px;background:var(--theme);color:#fff;border-radius:6px;font-size:12px}
.drawer-close{border:0;background:none;font-size:27px;color:var(--ink);cursor:pointer}
.drawer-menu{padding:10px 20px 30px}
.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf1f6;background:none;text-align:left;color:var(--ink);font:inherit;cursor:pointer}
.drawer-group{border-bottom:1px solid #edf1f6}
.drawer-toggle:after{content:"+";float:right;color:var(--theme);font-size:20px;line-height:1}
.drawer-toggle.active:after{content:"−"}
.drawer-submenu{display:none;padding:4px 0 8px 14px}
.drawer-submenu.open{display:block}
.drawer-submenu a{display:block;padding:7px 0;color:var(--muted);font-size:13px}
.footer{margin-top:70px;background:#0b1d39;color:#d6e0ef}
.footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:38px;padding:48px 0 38px}
.footer h3{margin:0 0 15px;color:#fff;font-size:16px}
.footer p{margin:0 0 10px;color:#aebed3;font-size:13px}
.footer-grid a{display:block;margin:7px 0;color:#b9c8dc;font-size:13px}
.footer-grid a:hover{color:#fff}
.footer-bottom{padding:18px 0;border-top:1px solid rgba(255,255,255,.12);color:#91a6c2;font-size:12px}
.tools-page{padding:0 0 10px;background:linear-gradient(180deg,#f5f8fc 0,#fff 420px)}
.tools-hero{padding:74px 0 52px;text-align:center;background:linear-gradient(135deg,#eef5ff,#fff)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:24px;height:2px;background:var(--theme)}
.tools-hero h1{margin:14px 0 12px;font-size:clamp(32px,5vw,56px);line-height:1.15;color:#102c58}
.tools-hero p{max-width:650px;margin:0 auto;color:var(--muted);font-size:16px}
.tool-filter{display:flex;justify-content:center;flex-wrap:wrap;gap:9px;margin-top:25px}
.tool-filter a{padding:7px 15px;background:#fff;border:1px solid #cfdbeb;border-radius:30px;color:#52647c;font-size:13px}
.tool-filter a.active,.tool-filter a:hover{background:var(--theme);border-color:var(--theme);color:#fff}
.tools-content{padding-top:48px}
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:22px}
.section-heading h2{margin:0;color:#142e56;font-size:26px}
.section-heading p{margin:0;color:var(--muted);font-size:13px}
.tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tool-card{display:flex;flex-direction:column;min-height:265px;padding:23px;background:#fff;border:1px solid #dfe7f1;border-radius:16px;box-shadow:0 8px 22px rgba(29,62,105,.06);transition:.2s}
.tool-card:hover{transform:translateY(-4px);border-color:#9dbbe4;box-shadow:0 16px 32px rgba(11,61,145,.13)}
.tool-icon{display:flex;align-items:center;justify-content:center;width:52px;height:52px;margin-bottom:18px;background:#edf4ff;border-radius:13px}
.tool-icon img{width:30px;height:30px;object-fit:contain}
.tool-card h3{margin:0 0 8px;color:#183963;font-size:18px}
.tool-card p{display:-webkit-box;overflow:hidden;margin:0;color:var(--muted);font-size:13px;line-height:1.75;-webkit-box-orient:vertical;-webkit-line-clamp:3}
.tool-meta{display:flex;justify-content:space-between;gap:8px;margin-top:auto;padding-top:17px;color:#8a98aa;font-size:11px}
.tool-link{color:var(--theme);font-weight:700}
.tool-link:after{content:" →"}
.tools-note{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:48px}
.note-card{padding:25px;border-radius:16px;background:#102e5c;color:#fff}
.note-card.light{background:#eef5ff;color:#183963}
.note-card h3{margin:0 0 8px;font-size:18px}
.note-card p{margin:0;color:#c6d6ed;font-size:13px}
.note-card.light p{color:#63758e}
.pagination{display:flex;justify-content:center;gap:8px;margin-top:38px}
.pagination a{min-width:34px;padding:5px 10px;text-align:center;border:1px solid var(--line);border-radius:7px;color:#52647c;font-size:13px}
.pagination a.active,.pagination a:hover{background:var(--theme);border-color:var(--theme);color:#fff}
@media(max-width:1080px){
.main-nav{display:none}
.hamburger{display:block}
.header-btns{margin-left:auto}
.tools-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:700px){
.container{width:min(100% - 28px,1180px)}
.topbar .container{align-items:flex-start;flex-direction:column;padding:8px 0;gap:2px}
.top-contact{gap:12px;flex-wrap:wrap}
.header-inner{height:66px;gap:10px}
.logo{font-size:16px}
.logo img{width:32px;height:32px}
.member-btn{display:none}
.tools-hero{padding:52px 0 38px}
.tools-hero h1{font-size:36px}
.tools-hero p{font-size:14px}
.section-heading{display:block}
.section-heading p{margin-top:5px}
.tools-grid{grid-template-columns:1fr}
.tool-card{min-height:235px}
.tools-note{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr;gap:25px;padding:35px 0}
.footer-grid>div:first-child{grid-column:1/-1}
.mega-menu,.dropdown-panel{display:none}
}
@media(max-width:430px){
.account-btn{display:none}
.footer-grid{grid-template-columns:1fr}
.footer-grid>div:first-child{grid-column:auto}
}