:root{--blue:#0B3D91;--ink:#172235;--muted:#667085;--line:#dfe5ee;--bg:#f5f7fb;--card:#fff;--shadow:0 14px 40px rgba(24,48,85,.1)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--bg);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1200px,calc(100% - 40px));margin:auto}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:20px;top:10px;z-index:100;background:#fff;padding:8px 14px}.topbar{background:#10213c;color:#dce7f8;font-size:13px}.topbar-inner{height:36px;display:flex;align-items:center;justify-content:space-between}.topbar-contact{display:flex;gap:24px}.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:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:19px;white-space:nowrap;color:var(--blue)}.logo img{width:38px;height:38px;object-fit:contain}.main-nav{margin-left:auto}.nav-list{display:flex;list-style:none;margin:0;padding:0;gap:4px}.nav-item{position:relative}.nav-link{display:block;padding:27px 13px;font-size:14px;font-weight:700;white-space:nowrap}.has-arrow:after{content:"";display:inline-block;width:6px;height:6px;border-right:1px solid;border-bottom:1px solid;transform:rotate(45deg);margin:0 0 3px 8px}.dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s;z-index:30}.dropdown-panel{width:270px;padding:12px}.dropdown-panel a{display:block;padding:9px 12px;border-bottom:1px solid #eef1f5;font-size:13px}.dropdown-panel .dropdown-more,.mega-footer{color:var(--blue);font-weight:700}.mega-menu{width:680px}.mega-wide{width:min(900px,calc(100vw - 30px))}.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}.mega-inner{padding:22px}.mega-heading{display:flex;justify-content:space-between;gap:15px;margin-bottom:17px;border-bottom:1px solid var(--line);padding-bottom:13px}.mega-heading strong{font-size:16px}.mega-heading span{font-size:12px;color:var(--muted)}.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mega-card{border:1px solid var(--line);padding:12px;border-radius:8px;min-width:0}.mega-card:hover{border-color:var(--blue);background:#f6f9ff}.mega-card img{width:34px;height:34px;object-fit:contain;margin-bottom:7px}.mega-card strong{display:block;font-size:13px}.mega-card p{font-size:12px;color:var(--muted);margin:4px 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.mega-meta{display:flex;flex-wrap:wrap;gap:5px;color:var(--muted);font-size:11px}.mega-categories{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.mega-categories a{padding:5px 10px;background:#f0f4fa;border-radius:20px;font-size:12px}.mega-footer{display:block;padding:12px 22px;border-top:1px solid var(--line);font-size:13px}.header-btns{display:flex;align-items:center;gap:12px}.open-account{border-radius:4px;background:var(--blue);color:#fff;font-size:13px;padding:9px 15px}.hamburger{display:none;border:0;background:none;padding:8px;cursor:pointer}.hamburger span{display:block;width:24px;height:2px;margin:5px;background:var(--ink);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;position:fixed;inset:0;background:rgba(10,22,42,.5);z-index:40}.drawer-overlay.open{display:block}.mobile-drawer{position:fixed;right:0;top:0;width:min(360px,88vw);height:100vh;background:#fff;z-index:50;transform:translateX(105%);transition:.25s;overflow:auto;box-shadow:-10px 0 30px rgba(0,0,0,.15)}.mobile-drawer.open{transform:translateX(0)}.drawer-head{display:flex;align-items:center;gap:14px;padding:20px;border-bottom:1px solid var(--line);font-weight:700}.drawer-head>a{margin-left:auto;color:var(--blue)}.drawer-close{border:0;background:none;font-size:26px;cursor:pointer}.drawer-menu{padding:12px 20px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf0f4;background:none;text-align:left;font:inherit;cursor:pointer}.drawer-toggle:after{content:"+";float:right;color:var(--blue)}.drawer-toggle.active:after{content:"−"}.drawer-submenu{display:none;padding-left:14px;background:#f6f8fb}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:9px 4px;font-size:13px}.footer{margin-top:70px;background:#101d32;color:#ccd7e8}.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:42px;padding:48px 0 38px}.footer .logo{color:#fff}.footer-brand p{font-size:13px;color:#aebbd0;max-width:300px}.footer h2{font-size:15px;color:#fff;margin:4px 0 15px}.footer-links{display:grid;gap:8px;font-size:13px}.footer-links a:hover,.footer-contact a:hover{color:#fff}.footer-contact{display:grid;gap:8px;font-size:13px}.footer-bottom{border-top:1px solid #2c3a50;padding:17px 0;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#9eacc1}.footer-bottom-links{display:flex;gap:18px}.tools-page{padding:54px 0 10px}.tools-hero{text-align:center;max-width:760px;margin:0 auto 38px}.eyebrow{display:inline-block;color:var(--blue);font-weight:800;font-size:13px;letter-spacing:2px;margin-bottom:8px}.tools-hero h1{font-size:clamp(30px,5vw,52px);line-height:1.2;margin:0 0 14px;color:#102b55}.tools-hero p{color:var(--muted);margin:0 auto;max-width:660px}.tool-filter{display:flex;justify-content:space-between;align-items:center;gap:20px;border:1px solid var(--line);background:#fff;border-radius:10px;padding:16px 20px;margin-bottom:24px;box-shadow:0 5px 18px rgba(24,48,85,.04)}.tool-filter strong{font-size:17px}.tool-filter span{font-size:13px;color:var(--muted)}.tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.tool-card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px;display:flex;flex-direction:column;min-height:220px;transition:.2s;box-shadow:0 4px 16px rgba(30,51,80,.04)}.tool-card:hover{transform:translateY(-4px);border-color:#9eb7df;box-shadow:var(--shadow)}.tool-icon{width:52px;height:52px;object-fit:contain;padding:9px;border-radius:10px;background:#eef4ff;margin-bottom:15px}.tool-card h2{font-size:18px;margin:0 0 8px;color:#183d76}.tool-card p{font-size:14px;color:var(--muted);margin:0 0 17px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.tool-card-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:13px;border-top:1px solid #edf0f5;color:#8792a4;font-size:12px}.tool-card .tool-link{color:var(--blue);font-weight:700;font-size:13px}.tools-page .pagination{display:flex;justify-content:center;gap:8px;margin:36px 0}.tools-page .pagination a{background:#fff;border:1px solid var(--line);padding:7px 12px;border-radius:5px;font-size:13px}.tools-page .pagination a.active,.tools-page .pagination a:hover{background:var(--blue);color:#fff;border-color:var(--blue)}@media(max-width:1050px){.main-nav{display:none}.hamburger{display:block}.header-btns{margin-left:auto}.footer-main{grid-template-columns:repeat(2,1fr)}}@media(max-width:680px){.container{width:min(100% - 28px,1200px)}.topbar-inner{height:auto;min-height:36px;gap:8px}.topbar-contact{gap:10px}.topbar-contact a:first-child{display:none}.header-inner{height:68px}.logo{font-size:16px}.logo img{width:32px;height:32px}.open-account{padding:7px 10px}.tools-page{padding-top:36px}.tools-grid{grid-template-columns:1fr}.tool-filter{align-items:flex-start;flex-direction:column;gap:4px}.footer-main{grid-template-columns:1fr;gap:25px;padding:35px 0 28px}.footer-bottom{display:block}.footer-bottom-links{margin-top:10px}.mega-grid{grid-template-columns:1fr}.mega-menu{width:calc(100vw - 30px)}}