:root{--theme:#0B3D91;--ink:#07152f;--night:#07132d;--silver:#aabbd5;--star:#8edcff;--line:#58729a;--paper:#f4f7fb;--muted:#66748b;--white:#fff;--radius:16px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font:15px/1.7 "Microsoft YaHei","PingFang SC",Arial,sans-serif;background:var(--paper)}a{text-decoration:none;color:inherit}button{font:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}
.topbar{height:36px;background:#06132d;color:#bac9dc;font-size:12px}.topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between}.topbar a{color:#e4f4ff;margin-left:18px}
.header{height:76px;background:#fff;border-bottom:1px solid #e6ebf2;position:relative;z-index:20}.header-inner{height:100%;display:flex;align-items:center;gap:28px}.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--theme);font-size:20px;white-space:nowrap}.logo img{width:34px;height:34px;object-fit:contain}.main-nav{flex:1}.nav-list{display:flex;align-items:center;justify-content:center;gap:4px;list-style:none;margin:0;padding:0}.nav-item{position:relative}.nav-link{display:block;padding:25px 12px;color:#25344c;font-size:14px;white-space:nowrap}.nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}.has-arrow:after{content:"⌄";font-size:12px;margin-left:5px}.header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap}.member-btn{padding:8px 13px;border:1px solid #d8e1ef;border-radius:9px;color:var(--theme);font-size:13px}.open-btn{padding:9px 15px;color:#fff;background:var(--theme);border-radius:9px;font-size:13px}.hamburger{display:none;border:0;background:none;padding:6px;cursor:pointer}.hamburger span{display:block;width:23px;height:2px;background:var(--ink);margin:4px 0}
.dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%);opacity:0;visibility:hidden;pointer-events:none;background:#fff;border:1px solid #e5ebf3;border-radius:0 0 15px 15px;box-shadow:0 18px 38px #12284d18;padding:20px;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:300px}.dropdown-panel a{display:block;padding:8px;border-bottom:1px solid #edf1f6;font-size:13px}.mega-menu{width:760px}.mega-grid{display:grid;grid-template-columns:1fr 2fr;gap:22px}.mega-menu h4{margin:0 0 9px;color:var(--theme);font-size:13px}.mega-menu a{display:block;padding:6px 0;font-size:13px}.mega-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.mega-card{padding:10px;border:1px solid #e8edf4;border-radius:10px;background:#fbfcfe}.mega-card b{display:block;font-size:13px}.mega-card small{color:var(--muted)}.mega-footer{display:block!important;border-top:1px solid #e8edf4;margin-top:12px;padding-top:10px!important;color:var(--theme)!important}
.drawer-overlay{display:none;position:fixed;inset:0;background:#03102c99;z-index:50}.drawer-overlay.open{display:block}.mobile-drawer{position:fixed;right:-360px;top:0;width:min(350px,88vw);height:100vh;overflow:auto;background:#fff;z-index:51;transition:right .25s;padding-bottom:30px}.mobile-drawer.open{right:0}.drawer-head{height:70px;display:flex;align-items:center;gap:13px;padding:0 20px;border-bottom:1px solid #e5ebf2}.drawer-head>a{color:var(--theme)}.drawer-close{margin-left:auto;border:0;background:none;font-size:28px;color:#697891}.drawer-menu{padding:12px 20px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;text-align:left;border:0;border-bottom:1px solid #edf0f5;background:none;color:var(--ink);font-size:15px}.drawer-toggle:after{content:"＋";float:right;color:var(--theme)}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding:5px 0 7px 14px;background:#f7f9fc}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:7px 0;color:#5d6b81;font-size:13px}
.hero{background:linear-gradient(180deg,#07132d,#0a214a);color:#fff;padding:72px 0 78px;overflow:hidden}.hero-head{text-align:center;max-width:800px;margin:0 auto 30px}.eyebrow{color:var(--star);letter-spacing:.18em;font-size:12px;text-transform:uppercase}.hero h1{font-size:clamp(34px,5vw,66px);line-height:1.12;margin:13px 0 16px;letter-spacing:-.04em}.hero-head p{margin:0;color:#b9c8df;font-size:17px}.hero-actions{display:flex;justify-content:center;gap:12px;margin-top:25px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:11px 20px;border-radius:10px;background:#fff;color:var(--theme);font-weight:700}.btn.alt{background:#174b98;color:#fff;border:1px solid #5d8ac8}
.graph-wrap{position:relative;width:100%;height:410px;max-width:1160px;margin:auto;border:1px solid #29466f;border-radius:22px;background:radial-gradient(circle at 50% 45%,#173b70 0,#0b2047 42%,#07152f 78%);box-shadow:inset 0 0 70px #0008;overflow:hidden}.graph-wrap:before{content:"";position:absolute;inset:0;background-image:radial-gradient(#d9f5ff 1px,transparent 1px);background-size:47px 47px;opacity:.14}.graph-lines{position:absolute;inset:0;width:100%;height:100%}.graph-lines line{stroke:var(--line);stroke-width:1.2;opacity:.8}.graph-lines line.hot{stroke:#a7d9ee;stroke-width:1.8}.node{position:absolute;transform:translate(-50%,-50%);width:12px;height:12px;border-radius:50%;background:var(--star);box-shadow:0 0 0 5px #8edcff20,0 0 18px #8edcff;color:#fff}.node:after{content:"";position:absolute;inset:-3px;border:1px solid #d9f7ff66;border-radius:50%}.node.key{width:22px;height:22px;background:#fff;box-shadow:0 0 0 7px #8edcff29,0 0 27px #b7f2ff}.node span{position:absolute;top:28px;left:50%;transform:translateX(-50%);white-space:nowrap;background:#102c58cc;border:1px solid #7192bd;color:#eaf7ff;border-radius:20px;padding:2px 9px;font-size:12px}.node.a{left:15%;top:32%}.node.b{left:28%;top:62%}.node.c{left:43%;top:23%}.node.d{left:52%;top:53%}.node.e{left:69%;top:30%}.node.f{left:83%;top:63%}.node.g{left:76%;top:82%}.node.h{left:34%;top:86%}.node.i{left:59%;top:78%}.node.j{left:91%;top:25%}
.section{padding:78px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}.section-head h2{margin:0;font-size:30px}.section-head p{margin:5px 0 0;color:var(--muted)}.text-link{color:var(--theme);font-weight:700}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:#fff;border:1px solid #e3eaf3;border-radius:var(--radius);padding:22px;box-shadow:0 8px 25px #1736600b}.card h3{margin:10px 0 7px;font-size:18px}.card p{color:var(--muted);margin:0}.icon{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:#eaf2ff;color:var(--theme);font-size:21px}.broker-card strong{color:#f29f38}.broker-card .meta{display:flex;justify-content:space-between;margin-top:16px;color:#64728a;font-size:13px}.article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.article-card{overflow:hidden;padding:0}.article-card img{display:block;width:100%;height:150px;object-fit:cover;background:#dce7f5}.article-body{padding:18px}.article-card time{color:#8793a5;font-size:12px}.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.tool-card{display:flex;gap:13px;align-items:flex-start}.tool-card img{width:38px;height:38px;object-fit:contain}.cta{background:var(--theme);color:#fff;border-radius:22px;padding:40px;text-align:center}.cta h2{margin:0 0 9px;font-size:29px}.cta p{color:#d6e4fb}
.footer{background:#06132d;color:#b9c9dd;padding:55px 0 20px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:35px}.footer h3,.footer h4{color:#fff;margin:0 0 13px}.footer p{margin:7px 0;font-size:13px}.footer a{display:block;color:#b9c9dd;padding:3px 0;font-size:13px}.footer-brand strong{font-size:20px;color:#fff}.footer-bottom{border-top:1px solid #233554;margin-top:35px;padding-top:16px;font-size:12px;display:flex;justify-content:space-between;gap:15px}
@media(max-width:1050px){.main-nav{display:none}.header-btns .member-btn{display:none}.hamburger{display:block}.cards,.article-list{grid-template-columns:repeat(2,1fr)}.tool-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:650px){.container{width:min(100% - 28px,1180px)}.topbar .container{font-size:11px}.topbar a{margin-left:7px}.header{height:66px}.header-inner{gap:12px}.logo{font-size:17px}.logo img{width:29px;height:29px}.open-btn{padding:7px 10px}.hero{padding:52px 0 55px}.hero h1{font-size:38px}.hero-head p{font-size:15px}.graph-wrap{height:310px;border-radius:16px}.node span{font-size:10px;padding:1px 5px}.node.a{left:11%}.node.j{left:87%}.section{padding:52px 0}.section-head{display:block}.section-head .text-link{display:inline-block;margin-top:10px}.cards,.article-list,.tool-grid,.footer-grid{grid-template-columns:1fr}.hero-actions{flex-wrap:wrap}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}}