:root{--blue:#0B3D91;--ink:#12213a;--muted:#68758a;--line:#e5eaf1;--bg:#f5f8fc;--white:#fff;--shadow:0 16px 45px rgba(19,47,88,.09)}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.6}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{height:36px;background:#0d1b31;color:#b9c7d9;font-size:12px}
    .topbar .container,.topbar-links{height:100%;display:flex;align-items:center;justify-content:space-between}
    .topbar-links{gap:22px}.topbar a{color:#dce6f3}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{height:78px;display:flex;align-items:center;gap:38px}
    .logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--blue);white-space:nowrap}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{flex:1}.nav-list{display:flex;align-items:center;gap:5px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}.nav-link{display:flex;align-items:center;gap:7px;padding:28px 13px;color:#34435a;font-size:14px;white-space:nowrap}
    .nav-link:hover{color:var(--blue)}.arrow{width:6px;height:6px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg);margin-top:-4px}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translate(-50%,8px);opacity:0;visibility:hidden;transition:.2s;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:0 0 12px 12px;padding:20px;min-width:250px}
    .mega-menu{width:760px}.nav-item:hover .dropdown-panel,.nav-item:hover .mega-menu,.nav-item:focus-within .dropdown-panel,.nav-item:focus-within .mega-menu{opacity:1;visibility:visible;transform:translate(-50%,0)}
    .dropdown-panel a,.mega-list a{display:block;padding:8px 0;font-size:13px;color:#536177}.dropdown-panel a:hover,.mega-list a:hover{color:var(--blue)}
    .mega-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:28px}.mega-title{font-size:12px;color:var(--blue);font-weight:700;margin:0 0 10px}
    .mega-footer{display:block;border-top:1px solid var(--line);margin:16px -20px -20px;padding:13px 20px;color:var(--blue);font-size:13px}
    .mega-broker,.mega-video{display:flex;align-items:center;gap:9px;padding:7px 0}.mega-broker img{width:28px;height:28px;object-fit:contain}.mega-video img{width:62px;height:38px;object-fit:cover;border-radius:5px}.mega-broker strong,.mega-video strong{display:block;font-size:12px}.mega-broker small,.mega-video small{display:block;color:#8490a2;font-size:10px}
    .mega-list img{width:20px;height:20px;display:inline-block;vertical-align:middle;margin-right:6px}
    .header-btns{display:flex;align-items:center;gap:12px}.member-entry{font-size:13px;color:var(--blue)}.open-account{padding:9px 17px;background:var(--blue);color:#fff;border-radius:6px;font-size:13px}
    .hamburger{display:none;border:0;background:none;padding:6px;cursor:pointer}.hamburger span{display:block;width:22px;height:2px;background:var(--ink);margin:4px 0;transition:.2s}
    .mobile-drawer{position:fixed;z-index:60;right:-350px;top:0;width:min(350px,88vw);height:100vh;background:#fff;transition:.3s;overflow:auto;box-shadow:-15px 0 35px rgba(0,0,0,.12)}.mobile-drawer.open{right:0}
    .drawer-overlay{position:fixed;z-index:50;inset:0;background:rgba(7,20,40,.48);opacity:0;visibility:hidden;transition:.3s}.drawer-overlay.open{opacity:1;visibility:visible}
    .drawer-head{display:flex;align-items:center;gap:16px;padding:20px;border-bottom:1px solid var(--line);color:var(--blue);font-weight:700}.drawer-head a{margin-left:auto;font-size:13px}.drawer-close{border:0;background:none;font-size:28px;color:#607087;cursor:pointer}
    .drawer-menu{padding:12px 20px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf0f5;background:none;text-align:left;color:var(--ink);font-size:14px;cursor:pointer}.drawer-toggle:after{content:"＋";float:right;color:#8490a2}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding:4px 0 8px 15px}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:13px}
    .tools-page{padding:58px 0 78px}.page-heading{text-align:center;max-width:700px;margin:0 auto 40px}.eyebrow{display:inline-block;color:var(--blue);font-size:12px;font-weight:700;letter-spacing:2px;margin-bottom:8px}.page-heading h1{font-size:42px;line-height:1.2;margin:0 0 15px;color:var(--ink)}.page-heading p{margin:0;color:var(--muted);font-size:16px}
    .tools-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:22px}.tools-toolbar h2{font-size:20px;margin:0}.tool-search{display:flex;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden;width:280px}.tool-search input{min-width:0;flex:1;border:0;padding:10px 12px;outline:0;color:var(--ink)}.tool-search button{border:0;background:var(--blue);color:#fff;padding:0 15px;cursor:pointer}
    .tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.tool-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px;box-shadow:0 5px 18px rgba(20,52,90,.035);transition:.2s}.tool-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c7d5e8}.tool-icon{width:50px;height:50px;padding:10px;background:#edf3fb;border-radius:10px;object-fit:contain;margin-bottom:17px}.tool-card h3{font-size:18px;margin:0 0 8px}.tool-card p{font-size:14px;color:var(--muted);margin:0 0 18px;min-height:45px}.tool-link{font-size:13px;color:var(--blue);font-weight:700}.tool-link:after{content:" →";margin-left:5px}.tools-note{margin-top:30px;background:#eaf1fb;border-left:3px solid var(--blue);padding:16px 18px;color:#536177;font-size:13px}
    .footer{background:#0d1b31;color:#b9c7d9}.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding:46px 0}.footer .logo{color:#fff}.footer-brand p{font-size:13px;line-height:1.8;color:#94a6bd;max-width:280px}.footer h3{font-size:14px;color:#fff;margin:2px 0 15px}.footer-links,.footer-contact{display:flex;flex-direction:column;gap:8px;font-size:13px}.footer-links a:hover,.footer-contact a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:16px 0;font-size:12px;color:#8395ad}
    @media (max-width:900px){.main-nav{display:none}.hamburger{display:block}.header-inner{height:68px;justify-content:space-between}.header-btns{margin-left:auto}.tools-grid{grid-template-columns:repeat(2,1fr)}.mega-menu{display:none}}
    @media (max-width:620px){.container{width:min(100% - 28px,1180px)}.topbar{height:auto;padding:8px 0}.topbar .container{align-items:flex-start;gap:6px;flex-direction:column}.topbar-links{gap:12px}.member-entry{display:none}.open-account{padding:8px 12px}.tools-page{padding:38px 0 55px}.page-heading h1{font-size:32px}.page-heading p{font-size:14px}.tools-toolbar{align-items:stretch;flex-direction:column}.tool-search{width:100%}.tools-grid{grid-template-columns:1fr}.tool-card p{min-height:0}.footer-main{grid-template-columns:1fr 1fr;gap:28px;padding:35px 0}.footer-brand{grid-column:1/-1}}