:root{--theme:#0B3D91;--ink:#172033;--muted:#647084;--line:#e5eaf1;--soft:#f5f8fc;--white:#fff;--shadow:0 16px 40px rgba(15,35,65,.1)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;background:#fff;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{height:38px;background:#10243e;color:#dfe9f7;font-size:13px}
.topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between}
.topbar a{margin-left:20px;color:#dfe9f7}
.header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{min-height:76px;display:flex;align-items:center;gap:28px}
.logo{display:flex;align-items:center;gap:10px;flex:none;font-size:19px;font-weight:800;color:#13294b}
.logo img{width:38px;height:38px;object-fit:contain}
.main-nav{flex:1}
.nav-list{display:flex;align-items:center;justify-content:center;gap:4px;margin:0;padding:0;list-style:none}
.nav-item{position:relative}
.nav-link{display:block;padding:27px 13px;font-size:14px;font-weight:600;white-space:nowrap}
.nav-link:hover,.nav-link:focus{color:var(--theme)}
.has-arrow:after{content:"";display:inline-block;width:6px;height:6px;margin:0 0 3px 7px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg)}
.dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);width:260px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
.dropdown-panel a{display:block;padding:9px 11px;border-radius:8px;font-size:13px}
.dropdown-panel a:hover{background:var(--soft);color:var(--theme)}
.mega-menu{width:700px}
.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}
.mega-menu:before,.dropdown-panel:before{content:"";position:absolute;left:0;right:0;height:14px;top:-14px}
.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.mega-card{min-height:118px;padding:11px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe}
.mega-card:hover{border-color:#9ab0d2;background:#f4f7fc}
.mega-card img{width:32px;height:32px;object-fit:contain;margin-bottom:7px}
.mega-card strong{display:block;font-size:13px;margin-bottom:3px}
.mega-card small{display:block;color:var(--muted);font-size:11px;line-height:1.5}
.mega-footer{display:inline-block;margin-top:12px;padding:8px 12px;color:var(--theme);font-size:12px;border:1px solid #d9e3f3;border-radius:8px}
.product-menu{width:700px}
.header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
.member-entry,.open-account{padding:8px 13px;border-radius:7px;font-size:13px}
.member-entry{color:var(--theme);border:1px solid #cbd8eb}
.open-account{color:#fff;background:var(--theme)}
.hamburger{display:none;width:42px;height:40px;border:1px solid var(--line);background:#fff;border-radius:8px;padding:9px;cursor:pointer}
.hamburger span{display:block;height:2px;margin:4px 0;background:var(--ink);transition:.2s}
.hamburger.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.drawer-overlay{position:fixed;inset:0;background:rgba(9,22,40,.45);opacity:0;visibility:hidden;z-index:30;transition:.2s}
.drawer-overlay.open{opacity:1;visibility:visible}
.mobile-drawer{position:fixed;z-index:31;top:0;right:0;width:min(380px,88vw);height:100vh;background:#fff;transform:translateX(100%);transition:.25s;overflow:auto;box-shadow:-15px 0 35px rgba(0,0,0,.16)}
.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:700}
.drawer-head a{margin-left:auto;color:var(--theme);font-size:13px}
.drawer-close{border:0;background:none;font-size:28px;line-height:1;cursor:pointer;color:var(--muted)}
.drawer-menu{padding:12px 20px 30px}
.drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;font:inherit;color:var(--ink);cursor:pointer}
.drawer-toggle:after{content:"+";float:right;color:var(--theme);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:13px}

.target-page-main{background:linear-gradient(180deg,#f5f8fc 0,#fff 48%);padding-bottom:90px}
.download-hero{padding:76px 0 54px;text-align:center}
.download-hero .eyebrow{display:inline-block;padding:5px 12px;border-radius:20px;background:#e7eef9;color:var(--theme);font-size:12px;font-weight:700}
.download-hero h1{margin:15px 0 10px;font-size:clamp(32px,5vw,58px);line-height:1.16;letter-spacing:-1px}
.download-hero p{max-width:690px;margin:0 auto;color:var(--muted);font-size:16px}
.download-actions{display:flex;justify-content:center;gap:12px;margin-top:25px;flex-wrap:wrap}
.download-actions a{padding:12px 22px;border-radius:8px;font-size:14px;font-weight:700}
.download-actions .primary{background:var(--theme);color:#fff;box-shadow:0 8px 18px rgba(11,61,145,.2)}
.download-actions .secondary{border:1px solid #cbd8eb;background:#fff;color:var(--theme)}
.download-panel{padding:30px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow)}
.download-panel h2,.download-faq h2{margin:0 0 8px;font-size:26px}
.section-lead{margin:0 0 24px;color:var(--muted)}
.download-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.download-step{position:relative;padding:24px;border:1px solid var(--line);border-radius:14px;background:#fbfcfe}
.step-number{display:flex;align-items:center;justify-content:center;width:35px;height:35px;margin-bottom:15px;border-radius:50%;background:var(--theme);color:#fff;font-weight:800}
.download-step h3{margin:0 0 8px;font-size:17px}
.download-step p{margin:0;color:var(--muted);font-size:14px}
.download-features{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:30px}
.feature-card{padding:20px;background:#f6f8fb;border-radius:12px}
.feature-card strong{display:block;margin-bottom:5px}
.feature-card span{display:block;color:var(--muted);font-size:13px}
.download-faq{margin-top:42px}
.faq-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.faq-item{padding:19px 21px;border:1px solid var(--line);border-radius:12px;background:#fff}
.faq-item h3{margin:0 0 7px;font-size:15px}
.faq-item p{margin:0;color:var(--muted);font-size:13px}
.download-notice{margin-top:28px;padding:15px 18px;border-left:3px solid var(--theme);background:#eef4fc;color:#53637b;font-size:13px}

.footer{background:#101d31;color:#d4deec;padding:55px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:35px}
.footer h3,.footer h4{margin:0 0 14px;color:#fff}
.footer h3{font-size:20px}
.footer h4{font-size:15px}
.footer p{margin:7px 0;color:#aebcd0;font-size:13px}
.footer-grid>div>a{display:block;margin:7px 0;color:#aebcd0;font-size:13px}
.footer-grid>div>a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:40px;padding:18px 0;border-top:1px solid rgba(255,255,255,.13);color:#9babc1;font-size:12px}

@media(max-width:1050px){
.main-nav{display:none}
.hamburger{display:block}
.header-btns{margin-left:auto}
.download-steps,.download-features{grid-template-columns:1fr}
}
@media(max-width:700px){
.container{width:min(100% - 28px,1180px)}
.topbar{height:auto;padding:8px 0}
.topbar .container{align-items:flex-start;gap:5px;flex-direction:column}
.topbar a{margin:0 12px 0 0}
.header-inner{min-height:66px}
.logo span{font-size:16px}
.member-entry{display:none}
.open-account{padding:7px 10px}
.download-hero{padding:53px 0 35px}
.download-hero h1{font-size:34px}
.download-hero p{font-size:14px}
.download-panel{padding:21px}
.download-panel h2,.download-faq h2{font-size:23px}
.faq-list{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr;gap:24px}
.footer-grid>div:first-child{grid-column:1/-1}
.footer-bottom{align-items:flex-start;flex-direction:column;gap:5px}
}