:root{--blue:#0B3D91;--ink:#18243a;--muted:#667085;--line:#e5eaf1;--bg:#f5f7fb;--amber:#d99a24}
    *{box-sizing:border-box}html,body{margin:0;padding:0;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",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:#102341;color:#dce7f8;font-size:13px}.topbar-inner{height:38px;display:flex;align-items:center;justify-content:space-between}.topbar-contact{display:flex;gap:22px}.header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}.header-inner{height:78px;display:flex;align-items:center;gap:28px}.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--blue);white-space:nowrap}.logo img{width:36px;height:36px;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:26px 13px;font-size:14px;font-weight:600;white-space:nowrap}.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px;color:#8290a6}.dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);background:#fff;border:1px solid var(--line);box-shadow:0 18px 45px rgba(15,35,70,.14);border-radius:0 0 12px 12px;padding:20px;opacity:0;visibility:hidden;pointer-events:none;transition:.2s;z-index:30}.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;pointer-events:auto}.dropdown-panel{width:250px}.dropdown-panel a{display:block;padding:8px 4px;border-bottom:1px solid #f0f2f6;font-size:13px}.dropdown-all,.mega-footer{display:block!important;color:var(--blue);font-weight:700;margin-top:12px}.mega-menu{width:730px}.mega-title{font-size:16px;font-weight:800;margin:0 0 14px}.mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.mega-card{display:flex;gap:10px;padding:11px;border:1px solid #edf0f5;border-radius:9px;background:#fbfcfe}.mega-card img{width:42px;height:42px;object-fit:contain;border-radius:7px}.mega-card strong{display:block;font-size:13px}.mega-card small,.mega-card p{display:block;margin:2px 0;color:var(--muted);font-size:11px;line-height:1.5}.mega-categories{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:15px}.mega-categories a{background:#f0f4fa;padding:4px 9px;border-radius:20px;font-size:12px}.header-btns{display:flex;align-items:center;gap:12px}.member-entry{color:var(--blue);font-size:13px;font-weight:700}.header-account{background:var(--blue);color:#fff;border-radius:6px;padding:7px 14px;font-size:13px}.hamburger{display:none;border:0;background:none;width:40px;height:40px;padding:8px;cursor:pointer}.hamburger span{height:2px;background:var(--ink);display:block;margin:5px 0;transition:.2s}.drawer-overlay{display:none}.mobile-drawer{display:none}
    .tool-detail-page{padding:54px 0 75px}.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:22px}.breadcrumb a{color:var(--blue)}.tool-layout{display:grid;grid-template-columns:minmax(0,1fr) 315px;gap:28px;align-items:start}.tool-main,.tool-side{background:#fff;border:1px solid var(--line);border-radius:16px}.tool-main{padding:36px}.tool-heading{display:flex;gap:22px;align-items:center;border-bottom:1px solid var(--line);padding-bottom:25px;margin-bottom:26px}.tool-icon{width:82px;height:82px;border-radius:18px;background:#edf3ff;padding:13px;object-fit:contain}.tool-heading h1{font-size:32px;line-height:1.25;margin:0 0 8px}.tool-summary{color:var(--muted);margin:0}.tool-meta{display:flex;flex-wrap:wrap;gap:18px;color:var(--muted);font-size:13px;margin-top:14px}.tool-content{min-width:0;max-width:100%;overflow-x:auto;font-size:15px}.tool-content img,.tool-content table{max-width:100%}.tool-content h2,.tool-content h3{color:var(--blue);margin-top:30px}.tool-actions{display:flex;gap:12px;margin:30px 0}.btn{display:inline-block;border-radius:7px;padding:10px 20px;background:var(--blue);color:#fff;font-weight:700}.btn-light{background:#edf3ff;color:var(--blue)}.tool-side{padding:23px;position:sticky;top:20px}.tool-side h2{font-size:18px;margin:0 0 15px}.related-tool{display:flex;gap:10px;padding:13px 0;border-bottom:1px solid var(--line)}.related-tool img{width:42px;height:42px;object-fit:contain;border-radius:8px;background:#f0f4fa;padding:6px}.related-tool strong{display:block;font-size:14px}.related-tool p{font-size:12px;color:var(--muted);margin:2px 0;line-height:1.5}.footer{background:#102341;color:#dbe5f2}.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:38px;padding:45px 0 35px}.footer .logo{color:#fff}.footer-brand p,.footer-contact p{color:#aebed4;font-size:13px}.footer h3{color:#fff;font-size:15px;margin:0 0 13px}.footer-links{display:grid;gap:8px;color:#b8c7da;font-size:13px}.footer-links a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:16px 0;display:flex;justify-content:space-between;gap:20px;color:#9fb0c7;font-size:12px}
    @media(max-width:900px){.container{width:min(100% - 28px,680px)}.main-nav{display:none}.header-inner{height:68px}.header-btns{margin-left:auto}.member-entry{display:none}.hamburger{display:block}.mega-menu{display:none}.mobile-drawer{display:block;position:fixed;z-index:60;right:-350px;top:0;width:min(350px,88vw);height:100vh;background:#fff;transition:.25s;overflow:auto}.mobile-drawer.open{right:0}.drawer-overlay{position:fixed;inset:0;background:rgba(8,20,40,.45);z-index:55;display:block;opacity:0;visibility:hidden;transition:.25s}.drawer-overlay.open{opacity:1;visibility:visible}.drawer-head{height:68px;padding:0 18px;display:flex;align-items:center;gap:15px;border-bottom:1px solid var(--line)}.drawer-head .member-drawer{font-weight:800;color:var(--blue);margin-right:auto}.drawer-head a{background:var(--blue);color:#fff;padding:4px 10px;border-radius:5px;font-size:12px}.drawer-close{font-size:27px;border:0;background:none;color:var(--ink)}.drawer-menu{padding:12px 18px}.drawer-link,.drawer-toggle{width:100%;display:block;text-align:left;padding:13px 4px;border:0;border-bottom:1px solid var(--line);background:none;font:inherit;color:var(--ink)}.drawer-toggle:after{content:"＋";float:right}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding:4px 13px;background:#f7f9fc}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:8px 0;font-size:13px;color:var(--muted)}.tool-layout{grid-template-columns:1fr}.tool-side{position:static}.footer-main{grid-template-columns:1fr 1fr}.tool-main{padding:24px}.tool-heading h1{font-size:26px}}
    @media(max-width:560px){.topbar-inner{height:auto;min-height:38px;padding:7px 0;display:block}.topbar-contact{gap:12px;flex-wrap:wrap}.tool-heading{align-items:flex-start;flex-direction:column}.footer-main{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}}