:root{
  --primary:#0B3D91;
  --primary-dark:#082c68;
  --ink:#172033;
  --muted:#687386;
  --line:#e4e9f0;
  --soft:#f5f8fc;
  --white:#fff;
  --shadow:0 18px 48px rgba(19,43,78,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#f7f9fc;font-family:"Noto Sans 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:#101b2d;color:#cbd5e1;font-size:13px}
.topbar .container{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.topbar a{margin-left:20px;color:#e7edf6}
.header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
.header-inner{min-height:76px;display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:10px;min-width:188px;font-size:19px;font-weight:800;color:var(--primary)}
.logo img{width:34px;height:34px;object-fit:contain}
.main-nav{flex:1}
.nav-list{display:flex;align-items:stretch;justify-content:center;gap:3px;padding:0;margin:0;list-style:none}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:6px;padding:25px 13px;font-size:14px;font-weight:650;white-space:nowrap}
.nav-link.has-arrow:after{content:"";width:6px;height:6px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg) translateY(-2px)}
.nav-link:hover,.nav-link:focus{color:var(--primary)}
.dropdown-panel,.mega-menu{position:absolute;left:50%;top:calc(100% + 1px);transform:translate(-50%,8px);opacity:0;visibility:hidden;pointer-events:none;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);transition:.2s ease;z-index:50}
.dropdown-panel{width:250px;padding:10px;border-radius:0 0 12px 12px}
.dropdown-panel a{display:block;padding:9px 12px;border-radius:7px;font-size:13px}
.dropdown-panel a:hover{background:var(--soft);color:var(--primary)}
.mega-menu{width:690px;padding:20px;border-radius:0 0 16px 16px}
.nav-item:hover>.mega-menu,.nav-item:focus-within>.mega-menu,
.nav-item:hover>.dropdown-panel,.nav-item:focus-within>.dropdown-panel{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
.nav-item:hover:after,.nav-item:focus-within:after{content:"";position:absolute;left:0;right:0;top:100%;height:12px}
.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.mega-card{display:block;padding:11px;border:1px solid var(--line);border-radius:10px;background:#fff}
.mega-card:hover{border-color:#a7bde2;background:#f7faff}
.mega-card img{width:34px;height:34px;object-fit:contain;margin-bottom:7px}
.mega-card strong{display:block;font-size:14px;margin-bottom:3px}
.mega-card small{display:block;color:var(--muted);font-size:11px;line-height:1.55}
.mega-footer{display:inline-block;margin-top:15px;padding:7px 12px;color:var(--primary);font-size:13px;font-weight:700}
.mega-footer:hover{text-decoration:underline}
.header-btns{display:flex;align-items:center;gap:9px;white-space:nowrap}
.member-entry,.open-account{padding:8px 13px;border-radius:7px;font-size:13px}
.member-entry{color:var(--primary);border:1px solid #cddaf0}
.open-account{background:var(--primary);color:#fff}
.open-account:hover{background:var(--primary-dark)}
.hamburger{display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:8px;background:#fff;padding:9px;cursor:pointer}
.hamburger span{display:block;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{position:fixed;inset:0;background:rgba(5,18,38,.48);opacity:0;visibility:hidden;z-index:60;transition:.25s}
.drawer-overlay.open{opacity:1;visibility:visible}
.mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:min(380px,88vw);background:#fff;z-index:70;transform:translateX(100%);transition:.28s ease;overflow:auto}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;gap:13px;padding:20px;border-bottom:1px solid var(--line);font-weight:700;color:var(--primary)}
.drawer-head>a{margin-left:auto;padding:6px 10px;background:var(--primary);color:#fff;border-radius:6px;font-size:13px}
.drawer-close{border:0;background:none;font-size:28px;color:var(--muted);cursor:pointer}
.drawer-menu{padding:12px 20px 30px}
.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;color:var(--ink);font:inherit;cursor:pointer}
.drawer-toggle:after{content:"+";float:right;color:var(--primary);font-size:20px}
.drawer-toggle.active:after{content:"−"}
.drawer-submenu{display:none;padding:5px 0 7px 14px}
.drawer-submenu.open{display:block}
.drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
.footer{margin-top:80px;background:#111c2d;color:#c4cfdd}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:38px;padding:55px 0 38px}
.footer h3{margin:0 0 12px;color:#fff;font-size:20px}
.footer h4{margin:0 0 14px;color:#fff;font-size:15px}
.footer p{margin:6px 0;color:#aebbd0;font-size:13px}
.footer-grid>div>a{display:block;margin:7px 0;color:#b9c6d8;font-size:13px}
.footer-grid>div>a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:18px 0;border-top:1px solid rgba(255,255,255,.12);font-size:12px;color:#92a3bb}
.tools-page{padding:0 0 10px}
.tools-hero{padding:75px 0 66px;background:linear-gradient(135deg,#eef4ff 0%,#fff 53%,#edf5f2 100%);border-bottom:1px solid #e1e8f2;text-align:center}
.tools-hero .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 13px;border-radius:99px;background:#e2ebfa;color:var(--primary);font-size:13px;font-weight:700}
.tools-hero .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:#36a269}
.tools-hero h1{margin:18px 0 12px;font-size:clamp(32px,5vw,58px);letter-spacing:-.04em;color:#122644}
.tools-hero p{max-width:690px;margin:0 auto;color:var(--muted);font-size:16px}
.tools-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:42px 0 24px}
.tools-toolbar h2{margin:0;font-size:25px}
.tools-toolbar p{margin:0;color:var(--muted);font-size:14px}
.tools-filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:26px}
.tools-filter a{padding:7px 14px;border:1px solid #d5dfed;border-radius:99px;background:#fff;color:#536176;font-size:13px}
.tools-filter a:first-child,.tools-filter a:hover{border-color:var(--primary);background:var(--primary);color:#fff}
.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tool-card{display:flex;flex-direction:column;min-height:245px;padding:23px;background:#fff;border:1px solid var(--line);border-radius:15px;box-shadow:0 7px 25px rgba(27,50,88,.05);transition:.2s ease}
.tool-card:hover{transform:translateY(-4px);border-color:#aec3e5;box-shadow:var(--shadow)}
.tool-card-head{display:flex;align-items:center;gap:14px;margin-bottom:15px}
.tool-icon{display:grid;place-items:center;width:52px;height:52px;flex:0 0 52px;border-radius:13px;background:#edf3fc;overflow:hidden}
.tool-icon img{width:34px;height:34px;object-fit:contain}
.tool-card h3{margin:0;font-size:17px}
.tool-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.tool-card-foot{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:18px;border-top:1px solid #edf0f5}
.tool-card-foot span{font-size:12px;color:#8994a5}
.tool-card-foot a{color:var(--primary);font-size:13px;font-weight:700}
.tools-note{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px}
.tools-note>div{padding:22px 25px;border-radius:14px;background:#eaf1fb}
.tools-note>div:last-child{background:#eef6f1}
.tools-note h3{margin:0 0 5px;font-size:17px}
.tools-note p{margin:0;color:var(--muted);font-size:13px}
@media(max-width:1050px){
  .main-nav{display:none}
  .header-btns .member-entry{display:none}
  .hamburger{display:block}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:760px){
  .container{width:min(100% - 28px,620px)}
  .topbar .container{min-height:44px;display:block;padding:8px 0;font-size:11px}
  .topbar a{margin:0 12px 0 0}
  .header-inner{min-height:66px;gap:10px}
  .logo{min-width:0;font-size:16px}
  .logo img{width:30px;height:30px}
  .header-btns{margin-left:auto}
  .open-account{display:none}
  .tools-hero{padding:50px 0 46px}
  .tools-hero h1{font-size:38px}
  .tools-hero p{font-size:14px}
  .tools-toolbar{display:block;margin-top:30px}
  .tools-toolbar p{margin-top:5px}
  .tool-grid{grid-template-columns:1fr;gap:14px}
  .tool-card{min-height:220px}
  .tools-note{grid-template-columns:1fr}
  .footer{margin-top:50px}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding:38px 0 28px}
  .footer-bottom{display:block;line-height:2}
}