:root{--theme:#0B3D91;--ink:#172033;--muted:#667085;--line:#e6eaf0;--paper:#fff;--red:#d91e18;--yellow:#f6c700;--blue:#1261c9;--green:#159447;--orange:#ed741d}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f7f8fa;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",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% - 36px));margin:auto}
.topbar{height:36px;background:#10203a;color:#cbd5e1;font-size:12px}.topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between}.topbar a{color:#fff;margin-left:18px}
.header{height:76px;background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}.header-inner{height:76px;display:flex;align-items:center;gap:34px}.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--theme);white-space:nowrap}.logo img{width:34px;height:34px;object-fit:contain}.main-nav{flex:1}.nav-list{display:flex;align-items:stretch;justify-content:center;gap:4px;list-style:none;margin:0;padding:0;height:76px}.nav-list>li{position:relative;display:flex;align-items:center}.nav-link{padding:26px 13px;font-size:14px;font-weight:600;white-space:nowrap}.nav-link:hover,.nav-link:focus{color:var(--theme)}.has-arrow:after{content:"⌄";margin-left:6px;color:#98a2b3}.dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);background:#fff;border:1px solid var(--line);box-shadow:0 18px 40px #1720331c;border-radius:0 0 12px 12px;opacity:0;visibility:hidden;pointer-events:none;transition:.2s;z-index:30}.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{width:310px;padding:16px}.dropdown-panel a,.mega-menu a{display:block}.drop-item{padding:10px;border-bottom:1px solid #f0f2f5;font-size:13px}.mega-menu{width:760px;padding:22px}.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.mega-title{font-weight:800;color:var(--theme);margin:0 0 12px}.mega-card{padding:9px 0;border-top:1px solid #edf0f4;font-size:13px}.mega-card img{width:32px;height:32px;float:left;margin-right:9px;object-fit:contain}.mega-card small{display:block;color:var(--muted);font-size:11px}.mega-footer{margin-top:16px;padding-top:13px;border-top:1px solid var(--line);color:var(--theme);font-size:13px;font-weight:700}.header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}.member-btn,.account-btn{border-radius:7px;padding:8px 12px;font-size:13px}.member-btn{background:#eef4ff;color:var(--theme)}.account-btn{background:var(--theme);color:#fff}.hamburger{display:none;border:0;background:transparent;padding:7px;cursor:pointer}.hamburger span{display:block;width:24px;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{display:none;position:fixed;inset:0;background:#07142680;z-index:50}.drawer-overlay.open{display:block}.mobile-drawer{position:fixed;right:0;top:0;bottom:0;width:min(360px,88vw);background:#fff;z-index:60;transform:translateX(100%);transition:.25s;overflow:auto}.mobile-drawer.open{transform:translateX(0)}.drawer-head{display:flex;align-items:center;gap:12px;padding:20px;border-bottom:1px solid var(--line);font-weight:800}.drawer-head>a{margin-left:auto;background:var(--theme);color:#fff;padding:5px 11px;border-radius:5px;font-size:13px}.drawer-close{border:0;background:transparent;font-size:28px;line-height:1;cursor:pointer}.drawer-menu{padding:10px 20px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid #edf0f3;background:none;text-align:left;font:inherit;cursor:pointer}.drawer-toggle:after{content:"＋";float:right;color:var(--theme)}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding:4px 0 8px 14px;background:#f8fafc}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:8px 0;color:#526071;font-size:13px}
.hero-layout-45{background:#fff;padding:72px 0 66px;position:relative;overflow:hidden;text-align:center;border-bottom:1px solid #e9edf3}.hero-layout-45:before{content:"";position:absolute;inset:0;background-image:linear-gradient(#e9edf3 1px,transparent 1px),linear-gradient(90deg,#e9edf3 1px,transparent 1px);background-size:34px 34px;opacity:.45}.hero-layout-45>*{position:relative}.hero-kicker{display:inline-block;background:#172033;color:#fff;border-radius:4px;padding:5px 12px;font-size:12px;font-weight:700;letter-spacing:2px}.hero-layout-45 h1{font-size:clamp(38px,6vw,72px);line-height:1.1;margin:18px 0 13px;letter-spacing:-3px}.hero-layout-45 .hero-sub{color:var(--muted);margin:0 auto;max-width:680px}.build-zone{position:relative;margin:44px auto 18px;width:min(950px,100%);min-height:250px;background:#fff;border:3px solid #1d2939;border-radius:10px;padding:48px 34px 26px;box-shadow:10px 10px 0 #d9dee7;text-align:left}.build-zone:before{content:"正在搭建";position:absolute;left:18px;top:14px;background:var(--yellow);border:2px solid #1d2939;padding:3px 13px;font-weight:900;font-size:13px;transform:rotate(-2deg)}.studs{position:absolute;right:24px;top:18px;display:flex;gap:6px}.studs i{width:10px;height:10px;border-radius:50%;background:#d9dee7;border:1px solid #98a2b3}.brick-row{display:flex;justify-content:center;align-items:end;gap:10px;flex-wrap:wrap}.brick{position:relative;min-width:130px;padding:19px 15px 13px;border:3px solid #172033;border-radius:5px;color:#fff;font-weight:800;box-shadow:0 6px 0 #172033;text-align:center}.brick:before{content:"";position:absolute;top:-9px;left:18px;width:13px;height:8px;border:2px solid #172033;background:inherit;border-radius:3px}.brick.red{background:var(--red)}.brick.blue{background:var(--blue)}.brick.green{background:var(--green)}.brick.yellow{background:var(--yellow);color:#172033}.brick.orange{background:var(--orange)}.brick small{display:block;font-size:11px;font-weight:500;margin-top:4px}.parts{position:absolute;left:-22px;bottom:-27px;display:flex;gap:8px;flex-wrap:wrap;max-width:310px}.parts span{background:#fff;border:2px solid #172033;padding:5px 9px;border-radius:3px;font-size:11px;font-weight:700;box-shadow:3px 3px 0 #172033}.parts span:nth-child(1){transform:rotate(-4deg)}.parts span:nth-child(2){background:#ffd8d6}.parts span:nth-child(3){background:#d7e7ff}.parts span:nth-child(4){background:#d8f2df}.hero-actions{margin-top:36px;display:flex;justify-content:center;gap:12px}.btn{display:inline-block;padding:11px 19px;border-radius:6px;border:2px solid var(--theme);font-weight:700;font-size:14px}.btn-primary{background:var(--theme);color:#fff}.btn-light{background:#fff;color:var(--theme)}
.section{padding:66px 0}.section-head{text-align:center;margin-bottom:30px}.section-head h2{font-size:30px;margin:0 0 8px}.section-head p{color:var(--muted);margin:0}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;box-shadow:0 7px 20px #17203308}.card h3{margin:7px 0;font-size:18px}.card p{color:var(--muted);font-size:14px}.broker-mark{width:46px;height:46px;border-radius:8px;background:#edf4ff;color:var(--theme);display:grid;place-items:center;font-weight:900}.meta{font-size:12px;color:#7a8697}.article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.article-card{display:grid;grid-template-columns:130px 1fr;gap:15px;background:#fff;border:1px solid var(--line);padding:13px;border-radius:10px}.article-card img{width:130px;height:100px;object-fit:cover;border-radius:7px}.article-card h3{font-size:16px;margin:0 0 5px}.article-card p{font-size:13px;color:var(--muted);margin:0 0 7px}.tool-icon{width:44px;height:44px;object-fit:contain}.product-card img{height:140px;width:100%;object-fit:cover;border-radius:8px}.video-card{background:#172033;color:#fff;border-radius:10px;overflow:hidden}.video-card img{height:150px;width:100%;object-fit:cover}.video-card div{padding:15px}.video-card p{color:#b8c3d5;font-size:13px}.faq{background:#edf4ff}.faq-list{max-width:850px;margin:auto}.faq-list details{background:#fff;margin:10px 0;padding:15px 18px;border-radius:8px;border:1px solid #dce7f8}.faq-list summary{font-weight:700;cursor:pointer}.cta{background:var(--theme);color:#fff;text-align:center}.cta p{color:#dbe8ff}.footer{background:#10203a;color:#c5d0df;padding:44px 0 20px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:30px}.footer h3{color:#fff;font-size:16px;margin:0 0 13px}.footer p,.footer a{font-size:13px;color:#b7c4d6}.footer a{display:block;margin:7px 0}.footer-bottom{border-top:1px solid #31415a;margin-top:28px;padding-top:17px;font-size:12px;color:#91a1b5}
@media(max-width:900px){.main-nav{display:none}.header-inner{justify-content:space-between}.header-btns .account-btn{display:none}.hamburger{display:block}.mega-menu{display:none}.cards{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.topbar .container{justify-content:center}.topbar .top-contact{display:none}.header,.header-inner{height:66px}.hero-layout-45{padding:50px 0 56px}.hero-layout-45 h1{letter-spacing:-1px}.build-zone{padding:46px 15px 28px;box-shadow:6px 6px 0 #d9dee7}.brick{min-width:105px;font-size:13px}.parts{left:8px;bottom:-54px}.hero-actions{margin-top:68px}.cards,.article-list{grid-template-columns:1fr}.article-card{grid-template-columns:105px 1fr}.article-card img{width:105px;height:105px}.footer-grid{grid-template-columns:1fr}.section{padding:48px 0}}