:root{--theme:#0B3D91;--ink:#252525;--muted:#68707b;--cream:#fff8ed;--line:#e8e4dc;--coral:#f4775d}
    *{box-sizing:border-box}html,body{margin:0;padding:0;color:var(--ink);font-family:Arial,"Microsoft YaHei",sans-serif;background:#fff}
    a{text-decoration:none;color:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:#17202b;color:#d9e0e8;font-size:13px}.topbar .container{min-height:34px;display:flex;align-items:center;justify-content:space-between}.topbar-links{display:flex;gap:22px}.topbar a{color:#fff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}.header-inner{height:78px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--theme);white-space:nowrap}.logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{margin-left:auto}.nav-list{display:flex;align-items:center;gap:3px;padding:0;margin:0;list-style:none}.nav-item{position:relative}.nav-link{display:block;padding:29px 13px;font-size:14px;font-weight:600}.has-arrow:after{content:"⌄";font-size:12px;margin-left:5px;color:var(--muted)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);width:300px;opacity:0;visibility:hidden;pointer-events:none;background:#fff;border:1px solid var(--line);box-shadow:0 18px 45px #1420331c;border-radius:0 0 14px 14px;transition:.2s}.mega-menu{width:680px}.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;transform:translateX(-50%) translateY(0)}
    .dropdown-inner,.mega-inner{padding:20px}.dropdown-inner>a:not(.mega-footer),.mega-links a{display:block;padding:10px 12px;border-radius:8px;font-size:14px}.dropdown-inner>a:hover,.mega-links a:hover{background:#f1f5fb;color:var(--theme)}
    .mega-heading{margin:0 0 12px;color:var(--theme);font-size:13px;font-weight:800}.mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.mega-card{display:flex;gap:9px;padding:10px;border:1px solid #edf0f4;border-radius:10px;background:#fff}.mega-card:hover{border-color:#b8c9e5;background:#f7faff}.mega-card img{width:34px;height:34px;object-fit:cover;border-radius:7px}.mega-card span{min-width:0}.mega-card strong,.mega-card small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mega-card strong{font-size:13px}.mega-card small{font-size:11px;color:var(--muted);margin-top:3px}.mega-columns{display:grid;grid-template-columns:170px 1fr;gap:22px}.mega-footer{display:block;margin-top:15px;padding-top:13px;border-top:1px solid var(--line);font-size:13px;font-weight:700;color:var(--theme)}
    .header-btns{display:flex;align-items:center;gap:9px}.member-btn,.open-btn{padding:10px 13px;border-radius:8px;font-size:13px}.member-btn{color:var(--theme);border:1px solid #c8d5e9}.open-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;margin:5px;background:var(--ink);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}.mobile-drawer{display:none}
    .download-page-main{background:linear-gradient(180deg,#fff8ed 0,#fff 480px);padding:76px 0 95px}.download-hero{text-align:center;max-width:760px;margin:0 auto 45px}.eyebrow{display:inline-block;padding:7px 13px;border-radius:30px;color:var(--theme);background:#e9f0fb;font-size:13px;font-weight:700}.download-hero h1{font-size:clamp(32px,5vw,58px);line-height:1.12;margin:18px 0 15px;color:#17202b}.download-hero p{max-width:650px;margin:auto;color:var(--muted);line-height:1.8}
    .download-actions{display:flex;justify-content:center;gap:13px;margin-top:25px;flex-wrap:wrap}.primary-btn,.secondary-btn{padding:13px 23px;border-radius:9px;font-size:14px;font-weight:700}.primary-btn{background:var(--theme);color:#fff;box-shadow:0 8px 20px #0b3d9130}.secondary-btn{border:1px solid #c8d5e9;color:var(--theme);background:#fff}
    .download-panel{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:0 18px 50px #26365012}.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.download-card{padding:23px;border-radius:14px;background:#f7f9fc;border:1px solid #e8edf5}.download-card .number{display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--coral);color:#fff;font-weight:800}.download-card h2{font-size:18px;margin:17px 0 9px}.download-card p{margin:0;color:var(--muted);line-height:1.7;font-size:14px}.download-note{margin-top:22px;padding:17px 20px;background:#fff8ed;border-left:4px solid var(--coral);border-radius:8px;color:#5f5145;font-size:13px;line-height:1.7}
    .faq-section{padding-top:52px}.section-title{text-align:center;margin-bottom:24px}.section-title h2{font-size:28px;margin:0 0 8px}.section-title p{color:var(--muted);margin:0}.faq-list{max-width:850px;margin:auto;display:grid;gap:10px}.faq-list details{border:1px solid var(--line);border-radius:10px;padding:17px 20px;background:#fff}.faq-list summary{cursor:pointer;font-weight:700}.faq-list p{color:var(--muted);line-height:1.7;margin:12px 0 0;font-size:14px}
    .footer{background:#17202b;color:#cbd3dd;padding:55px 0 20px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:35px}.footer .logo{color:#fff;margin-bottom:15px}.footer h3{font-size:15px;color:#fff;margin:4px 0 15px}.footer-grid>div>a{display:block;margin:10px 0;font-size:13px}.footer p{font-size:13px;line-height:1.8;color:#aeb9c6}.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid #35414f;padding-top:18px;margin-top:35px;font-size:12px;color:#9ba8b6}
    @media(max-width:900px){.main-nav{display:none}.header-inner{height:68px}.header-btns{margin-left:auto}.hamburger{display:block}.member-btn{display:none}.mega-menu{width:min(680px,calc(100vw - 30px))}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:600px){.container{width:min(100% - 28px,1180px)}.topbar .container{padding:8px 0;display:block}.topbar-links{gap:12px;margin-top:5px;flex-wrap:wrap}.open-btn{display:none}.download-page-main{padding:52px 0 65px}.download-panel{padding:18px}.download-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block;line-height:1.8}.footer-bottom span{display:block}.mega-columns{grid-template-columns:1fr}.mega-grid{grid-template-columns:1fr}
      .mobile-drawer{display:block;position:fixed;z-index:50;top:0;right:0;width:min(360px,88vw);height:100vh;background:#fff;transform:translateX(105%);transition:.25s;box-shadow:-15px 0 40px #0002;overflow:auto}.mobile-drawer.open{transform:translateX(0)}.drawer-overlay{display:block;position:fixed;inset:0;z-index:40;background:#1118;opacity:0;visibility:hidden;transition:.2s}.drawer-overlay.open{opacity:1;visibility:visible}.drawer-head{display:flex;align-items:center;gap:15px;padding:20px;border-bottom:1px solid var(--line)}.drawer-head strong{flex:1;color:var(--theme)}.drawer-head a{font-size:13px;color:var(--theme)}.drawer-close{border:0;background:transparent;font-size:29px;line-height:1;cursor:pointer}.drawer-menu{padding:10px 20px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:15px 0;border:0;border-bottom:1px solid #f0f0f0;background:transparent;text-align:left;font-size:15px;color:var(--ink)}.drawer-toggle{cursor:pointer;font-weight:600}.drawer-toggle:after{content:"＋";float:right;color:var(--theme)}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding:3px 0 8px 14px}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:10px 0;color:var(--muted);font-size:13px}}