:root{--theme:#0B3D91;--ink:#241b15;--muted:#76685a;--paper:#fffaf2;--sand:#f3e7d3;--amber:#bd791f;--line:#e8dccb;--white:#fff}
    *{box-sizing:border-box}
    body{margin:0;background:#fff;color:var(--ink);font-family:Arial,"Microsoft YaHei",sans-serif;line-height:1.65}
    a{color:inherit;text-decoration:none}
    button{font:inherit}
    .container{width:min(1160px,calc(100% - 40px));margin:0 auto}
    .topbar{background:#291e17;color:#f8efe3;font-size:13px}
    .topbar .container{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
    .topbar a{margin-left:18px;color:inherit}
    .header{position:relative;z-index:10;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:750;white-space:nowrap}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{height:100%}
    .nav-list{display:flex;align-items:center;gap:4px;margin:0;padding:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;min-height:76px;padding:0 12px;font-size:14px;font-weight:650;white-space:nowrap}
    .nav-link:hover,.nav-link:focus-visible{color:var(--amber)}
    .has-arrow:after{content:"";width:6px;height:6px;margin:0 0 3px 8px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:0;z-index:20;display:none;background:#fff;border:1px solid var(--line);box-shadow:0 14px 35px #241b1520;border-radius:4px}
    .dropdown-panel{width:270px;padding:12px}
    .dropdown-panel>a:not(.mega-footer){display:block;padding:9px;border-bottom:1px solid #f0e9df;font-size:13px}
    .nav-item:hover>.dropdown-panel,.nav-item:focus-within>.dropdown-panel,.nav-item:hover>.mega-menu,.nav-item:focus-within>.mega-menu{display:block}
    .mega-menu{width:620px;padding:20px}
    .nav-item:nth-child(4) .mega-menu,.nav-item:nth-child(5) .mega-menu,.nav-item:nth-child(6) .mega-menu{left:50%;transform:translateX(-50%)}
    .mega-title{margin:0 0 10px;font-size:14px;font-weight:750}
    .mega-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
    .mega-grid>a,.broker-mini,.video-mini,.product-mini{min-width:0;padding:10px;border:1px solid #eee5d9;border-radius:3px;background:#fff;font-size:13px}
    .broker-mini,.video-mini,.product-mini{display:flex;flex-direction:column;gap:4px}
    .mega-grid small{color:var(--muted);font-size:11px}
    .product-mini img{width:24px;height:24px;object-fit:contain}
    .mega-footer{display:inline-block;margin-top:12px;color:var(--theme);font-weight:700;font-size:13px}
    .header-btns{display:flex;align-items:center;gap:12px}
    .member-btn{font-size:13px;white-space:nowrap}
    .open-btn{padding:9px 15px;border-radius:3px;background:var(--theme);color:#fff;font-size:13px;font-weight:700;white-space:nowrap}
    .hamburger{display:none;width:42px;height:42px;padding:10px;border:1px solid var(--line);border-radius:3px;background:#fff;cursor:pointer}
    .hamburger span{display:block;height:2px;margin:4px 0;background:var(--ink);transition:transform .2s,opacity .2s}
    .hamburger.active span:first-child{transform:translateY(6px) rotate(45deg)}
    .hamburger.active span:nth-child(2){opacity:0}
    .hamburger.active span:last-child{transform:translateY(-6px) rotate(-45deg)}
    .drawer-overlay{position:fixed;inset:0;z-index:30;display:none;background:#1c1712a6}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;top:0;right:0;z-index:31;width:min(390px,88vw);height:100dvh;overflow:auto;background:#fff;transform:translateX(102%);transition:transform .25s ease}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{position:sticky;top:0;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:16px;background:#fff;border-bottom:1px solid var(--line)}
    .drawer-head>a{padding:7px 12px;background:var(--theme);border-radius:3px;color:#fff;font-size:13px}
    .drawer-close{width:36px;height:36px;border:1px solid var(--line);background:#fff;font-size:24px;line-height:1;cursor:pointer}
    .drawer-menu{padding:10px 16px 24px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 4px;text-align:left;border:0;border-bottom:1px solid var(--line);background:transparent;font-weight:650;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--muted)}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:4px 0 8px 12px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 4px;color:var(--muted);font-size:13px}
    .footer{margin-top:72px;padding:48px 0 18px;background:#291e17;color:#f6ede1}
    .footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1.1fr;gap:32px}
    .footer h3{margin:0 0 14px;font-size:14px}
    .footer p,.footer a{font-size:13px;color:#d8cabc}
    .footer p{margin:7px 0}
    .footer-grid>div>a{display:block;margin:8px 0}
    .footer-brand strong{font-size:18px}
    .footer-bottom{margin-top:32px;padding-top:16px;border-top:1px solid #ffffff26;color:#c5b6a6;font-size:12px}
    .about-page{min-height:400px}
    .about-hero{padding:68px 0 58px;background:var(--paper);text-align:center;border-bottom:1px solid var(--line)}
    .eyebrow{margin:0 0 12px;color:var(--amber);font-size:13px;font-weight:750}
    .about-hero h1{max-width:780px;margin:0 auto 16px;font-size:clamp(32px,5vw,52px);line-height:1.2}
    .about-hero .lead{max-width:720px;margin:0 auto;color:var(--muted);font-size:17px}
    .about-content{padding:54px 0 0}
    .section-heading{margin:0 0 12px;font-size:27px;line-height:1.3}
    .section-intro{max-width:760px;margin:0 0 28px;color:var(--muted)}
    .mission{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;padding:0 0 50px;border-bottom:1px solid var(--line)}
    .mission-copy p{margin:0 0 14px;color:var(--muted)}
    .mission-note{padding:22px 24px;border-left:3px solid var(--amber);background:var(--paper)}
    .mission-note strong{display:block;margin-bottom:6px}
    .principles{padding:48px 0;border-bottom:1px solid var(--line)}
    .principle-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
    .principle{padding:20px;border:1px solid var(--line);border-radius:4px;background:#fff}
    .principle-mark{display:grid;place-items:center;width:38px;height:38px;margin-bottom:14px;border-radius:50%;background:var(--sand);color:#704312;font-weight:800}
    .principle h3{margin:0 0 8px;font-size:17px}
    .principle p{margin:0;color:var(--muted);font-size:14px}
    .standards{display:grid;grid-template-columns:1fr 1fr;gap:38px;padding:48px 0}
    .standards-list{margin:0;padding:0;list-style:none}
    .standards-list li{padding:12px 0;border-bottom:1px solid var(--line);color:var(--muted)}
    .standards-list strong{color:var(--ink)}
    .about-cta{padding:28px 30px;background:#f6efe4;border-radius:4px}
    .about-cta h2{margin:0 0 8px;font-size:22px}
    .about-cta p{margin:0 0 18px;color:var(--muted)}
    .about-cta a{display:inline-block;padding:10px 16px;border-radius:3px;background:var(--theme);color:#fff;font-weight:700}
    @media(max-width:1080px){.nav-link{padding:0 8px;font-size:13px}.member-btn{display:none}}
    @media(max-width:860px){.main-nav{display:none}.hamburger{display:block}.header-inner{min-height:68px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
    @media(max-width:620px){.container{width:min(100% - 28px,1160px)}.topbar .container{min-height:34px;font-size:11px}.topbar a{margin-left:10px}.topbar a:first-child{display:none}.header-btns{gap:8px}.open-btn{padding:8px 11px}.about-hero{padding:48px 0 42px}.about-hero .lead{font-size:15px}.mission,.standards{grid-template-columns:1fr;gap:20px}.principle-grid{grid-template-columns:1fr}.about-content{padding-top:38px}.principles,.standards{padding:36px 0}.footer{margin-top:48px;padding-top:36px}.footer-grid{grid-template-columns:1fr 1fr;gap:24px 16px}}
    @media(max-width:380px){.footer-grid{grid-template-columns:1fr}.logo{font-size:16px}.logo img{width:32px;height:32px}}