:root{--theme:#0B3D91;--ink:#14213d;--muted:#64748b;--line:#dbe4f0;--paper:#f7f9fc;--white:#fff;--shadow:0 16px 40px rgba(14,45,91,.12)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--paper);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
button{font:inherit}
.container{width:min(1180px,calc(100% - 40px));margin:auto}
.topbar{background:#071d45;color:#d9e7ff;font-size:13px}
.topbar .container{height:36px;display:flex;align-items:center;justify-content:space-between}
.top-contact{display:flex;gap:22px}
.top-contact a:hover{color:#fff}
.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;min-width:190px;color:var(--ink);font-weight:800;letter-spacing:.02em}
.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;padding:0;margin:0;list-style:none}
.nav-list>li{position:relative}
.nav-link{display:block;padding:25px 13px;font-size:14px;font-weight:700;white-space:nowrap}
.nav-link:hover,.nav-link:focus{color:var(--theme)}
.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px;color:#8aa0bd}
.dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%);width:300px;padding:18px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:0 0 14px 14px;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
.mega-menu{width:650px}
.nav-list>li:focus-within .dropdown-panel,.nav-list>li:hover .dropdown-panel,
.nav-list>li:focus-within .mega-menu,.nav-list>li:hover .mega-menu{opacity:1;visibility:visible;pointer-events:auto}
.dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
.drop-item,.mega-card{display:block;padding:9px 10px;border-radius:8px;font-size:13px}
.drop-item:hover,.mega-card:hover{background:#eef4ff;color:var(--theme)}
.mega-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}
.mega-title{margin:0 0 9px;color:var(--theme);font-weight:800}
.mega-card{border-bottom:1px solid #edf1f6}
.mega-card img{width:23px;height:23px;object-fit:contain;vertical-align:middle;margin-right:7px}
.mega-card strong{font-size:13px}
.mega-card small,.meta{display:block;color:var(--muted);font-size:11px;line-height:1.55}
.mega-footer{display:inline-block;margin-top:12px;color:var(--theme);font-size:13px;font-weight:800}
.header-btns{display:flex;align-items:center;gap:9px;white-space:nowrap}
.member-btn,.account-btn{border-radius:7px;padding:8px 12px;font-size:13px;font-weight:800}
.member-btn{color:var(--theme);background:#e9f1ff}
.account-btn{color:#fff;background:var(--theme)}
.hamburger{display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:8px;cursor:pointer;padding:9px}
.hamburger span{display:block;height:2px;background:var(--theme);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;z-index:40;inset:0;background:rgba(3,16,39,.5)}
.drawer-overlay.open{display:block}
.mobile-drawer{position:fixed;z-index:50;top:0;right:0;width:min(390px,88vw);height:100vh;background:#fff;transform:translateX(105%);transition:.25s;overflow:auto;box-shadow:-12px 0 35px rgba(0,0,0,.18)}
.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;color:var(--theme)}
.drawer-close{border:0;background:transparent;font-size:28px;color:var(--muted);cursor:pointer}
.drawer-menu{padding:12px 20px 30px}
.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf1f6;background:transparent;text-align:left;color:var(--ink);font-weight:700;cursor:pointer}
.drawer-toggle:after{content:"＋";float:right;color:var(--theme)}
.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:14px}
.footer{margin-top:70px;background:#071d45;color:#d8e4f8}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:38px;padding:52px 0 38px}
.footer h3{margin:0 0 14px;color:#fff;font-size:16px}
.footer p{margin:7px 0;color:#aec1df;font-size:13px}
.footer a{display:block;margin:7px 0;color:#aec1df;font-size:13px}
.footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.15);padding:20px 0;color:#91a8ca;font-size:12px}
.about-page{overflow:hidden}
.about-hero{padding:78px 0 74px;text-align:center;background:linear-gradient(180deg,#eef5ff 0,#f7f9fc 100%);border-bottom:1px solid var(--line)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.12em}
.eyebrow:before{content:"";width:28px;height:3px;background:#f5c542;border-radius:3px}
.about-hero h1{max-width:820px;margin:15px auto 14px;font-size:clamp(34px,5vw,62px);line-height:1.15;letter-spacing:-.04em}
.about-hero p{max-width:680px;margin:0 auto;color:var(--muted);font-size:17px}
.about-wrap{padding:64px 0}
.section-heading{text-align:center;margin-bottom:30px}
.section-heading h2{margin:0 0 8px;font-size:30px}
.section-heading p{margin:0;color:var(--muted)}
.about-intro{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
.about-panel{padding:30px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
.about-panel h3{margin:0 0 12px;color:var(--theme);font-size:20px}
.about-panel p{margin:0;color:#52647d}
.principles{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:56px}
.principle{padding:25px;background:#fff;border:1px solid var(--line);border-radius:16px}
.principle .number{display:inline-grid;place-items:center;width:38px;height:38px;margin-bottom:16px;border-radius:10px;background:#f5c542;color:#14213d;font-weight:900}
.principle h3{margin:0 0 8px;font-size:18px}
.principle p{margin:0;color:var(--muted);font-size:14px}
.about-timeline{position:relative;max-width:820px;margin:65px auto 0;padding-left:28px}
.about-timeline:before{content:"";position:absolute;left:5px;top:10px;bottom:10px;width:2px;background:#b7cbed}
.timeline-item{position:relative;padding:0 0 28px 25px}
.timeline-item:before{content:"";position:absolute;left:-1px;top:8px;width:13px;height:13px;border:4px solid #fff;background:var(--theme);border-radius:50%;box-shadow:0 0 0 2px #b7cbed}
.timeline-item strong{display:block;color:var(--theme);font-size:14px}
.timeline-item h3{margin:3px 0 4px;font-size:19px}
.timeline-item p{margin:0;color:var(--muted);font-size:14px}
.trust-strip{margin-top:45px;padding:25px;border-radius:15px;background:var(--theme);color:#fff;text-align:center}
.trust-strip strong{display:block;font-size:20px;margin-bottom:4px}
.trust-strip span{color:#d9e7ff;font-size:14px}
@media(max-width:980px){
.main-nav{display:none}.hamburger{display:block}.header-inner{justify-content:space-between}.header-btns{margin-left:auto}
.footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:700px){
.container{width:min(100% - 28px,1180px)}.topbar .container{height:auto;min-height:36px;padding:8px 0;gap:8px;align-items:flex-start}.top-contact{gap:8px;flex-direction:column;text-align:right}.logo{min-width:0}.logo span{max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.member-btn{display:none}.about-hero{padding:56px 0}.about-hero p{font-size:15px}.about-intro,.principles{grid-template-columns:1fr}.about-wrap{padding:45px 0}.principles{margin-top:40px}.about-timeline{margin-top:45px}.footer-grid{grid-template-columns:1fr;gap:22px;padding:38px 0 25px}
}