:root{--theme:#0B3D91;--ink:#152238;--muted:#68758a;--line:#dce5ef;--bg:#f5f8fc;--white:#fff;--shadow:0 16px 45px rgba(19,46,79,.11)}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}button{font:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:#10233e;color:#dbe7f5;font-size:13px}.topbar .container{height:36px;display:flex;align-items:center;justify-content:space-between}.topbar a{color:#fff;margin-left:18px}
    .header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(15px)}.header-inner{height:76px;display:flex;align-items:center;gap:30px}.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;white-space:nowrap;color:var(--theme)}.logo img{width:36px;height:36px;object-fit:contain}.main-nav{flex:1}.nav-list{display:flex;align-items:center;justify-content:center;gap:4px;list-style:none;padding:0;margin:0}.nav-item{position:relative}.nav-link{display:flex;align-items:center;gap:5px;padding:25px 13px;font-size:14px;font-weight:600;color:#314258}.nav-link:hover,.nav-link:focus{color:var(--theme)}.has-arrow:after{content:"⌄";font-size:12px;color:#8291a5}
    .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 var(--line);box-shadow:var(--shadow);border-radius:0 0 16px 16px;transition:.2s;z-index:40}.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:290px;padding:14px}.dropdown-panel a{display:block;padding:9px 10px;border-radius:8px;font-size:14px}.dropdown-panel a:hover{background:#eef4fb;color:var(--theme)}
    .mega-menu{width:min(850px,90vw);padding:22px}.mega-title{font-weight:800;color:var(--theme);margin-bottom:12px}.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.mega-card{padding:13px;border:1px solid var(--line);border-radius:12px;background:#fbfdff}.mega-card img{width:34px;height:34px;object-fit:contain;float:left;margin-right:9px}.mega-card strong{display:block;font-size:14px}.mega-card small{display:block;color:var(--muted);font-size:12px}.mega-footer{display:inline-block;margin-top:16px;color:var(--theme);font-weight:700;font-size:13px}.header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap}.member-btn,.open-btn{border-radius:9px;padding:9px 13px;font-size:13px;font-weight:700}.member-btn{background:#edf3fb;color:var(--theme)}.open-btn{background:var(--theme);color:#fff}.hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}.hamburger span{display:block;width:23px;height:2px;background:var(--ink);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{position:fixed;inset:0;background:rgba(7,20,37,.48);opacity:0;visibility:hidden;z-index:50;transition:.2s}.drawer-overlay.open{opacity:1;visibility:visible}.mobile-drawer{position:fixed;right:0;top:0;bottom:0;width:min(360px,88vw);background:#fff;z-index:51;transform:translateX(100%);transition:.25s;overflow:auto}.mobile-drawer.open{transform:translateX(0)}.drawer-head{height:76px;padding:0 20px;display:flex;align-items:center;gap:15px;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:29px;cursor:pointer;color:var(--muted)}.drawer-menu{padding:12px 20px 30px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf1f5;background:none;text-align:left;font-weight:700;color:var(--ink);cursor:pointer}.drawer-toggle:after{content:"＋";float:right;color:var(--theme)}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding:4px 0 8px 14px}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;color:var(--muted);font-size:14px;padding:7px 0}
    .hero{padding:72px 0 78px;overflow:hidden}.hero-layout-37{background:linear-gradient(145deg,#f8fbff 0%,#e9f2ff 100%);position:relative}.hero-layout-37 .hero-intro{text-align:center;max-width:850px;margin:0 auto 42px}.eyebrow{display:inline-flex;padding:6px 13px;border-radius:30px;background:#dce9fa;color:var(--theme);font-size:13px;font-weight:800}.hero h1{font-size:clamp(36px,5vw,66px);line-height:1.13;letter-spacing:-2px;margin:15px 0 13px}.hero-intro p{max-width:650px;margin:0 auto;color:var(--muted);font-size:17px}.puzzle-board{position:relative;width:min(1000px,100%);margin:auto;display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:10px;background:rgba(255,255,255,.65);border:1px solid #d5e2f1;border-radius:24px;box-shadow:var(--shadow)}.puzzle-piece{min-height:145px;position:relative;padding:22px 18px;display:flex;flex-direction:column;justify-content:flex-end;color:#fff;border-radius:16px;overflow:hidden;box-shadow:inset 0 -55px 70px rgba(0,0,0,.13)}.puzzle-piece:after{content:"";position:absolute;width:25px;height:25px;border-radius:50%;background:inherit;right:-12px;top:50%;box-shadow:0 0 0 1px rgba(255,255,255,.28)}.puzzle-piece h3{margin:0 0 4px;font-size:18px;position:relative;z-index:1}.puzzle-piece p{margin:0;font-size:12px;opacity:.9;position:relative;z-index:1}.piece-blue{background:#2d70c9}.piece-green{background:#3d9a83}.piece-yellow{background:#e2a52b}.piece-coral{background:#dc6f68}.piece-purple{background:#8064b7}.piece-sky{background:#42a6bf}.piece-navy{background:#35517d}.piece-light{background:#7898bd}.puzzle-gap{min-height:145px;border:3px dashed var(--theme);border-radius:16px;background:#fff;display:flex;align-items:center;justify-content:center;text-align:center;padding:16px;color:var(--theme);position:relative}.puzzle-gap:before{content:"";position:absolute;width:22px;height:22px;border-radius:50%;background:#fff;border:3px dashed var(--theme);left:-14px;top:45%}.gap-inner strong{display:block;font-size:17px}.gap-inner span{display:block;font-size:12px;color:var(--muted);margin:4px 0 12px}.gap-action{display:inline-block;background:var(--theme);color:#fff;padding:8px 14px;border-radius:8px;font-size:13px;font-weight:700}.hero-note{text-align:center;margin-top:22px;color:var(--muted);font-size:13px}
    .section{padding:72px 0}.section-head{text-align:center;margin-bottom:30px}.section-head h2{margin:0 0 8px;font-size:32px}.section-head p{margin:0;color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:0 8px 24px rgba(19,46,79,.05)}.card h3{margin:10px 0 6px;font-size:18px}.card p{margin:0;color:var(--muted);font-size:14px}.icon{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;background:#eaf2fc;color:var(--theme);font-size:21px}.article-preview{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.article-preview article{background:#fff;border-radius:15px;border:1px solid var(--line);overflow:hidden}.article-preview img{width:100%;height:145px;object-fit:cover;background:#dbe8f7}.article-preview .article-body{padding:17px}.article-preview h3{font-size:17px;margin:0 0 8px}.article-preview p{font-size:13px;color:var(--muted);margin:0 0 10px}.meta{font-size:12px;color:#8290a1}.product-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.product-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}.product-card img{width:50px;height:50px;object-fit:contain}.product-card h3{font-size:16px;margin:8px 0 4px}.product-card p{font-size:13px;color:var(--muted);margin:0}.faq{max-width:820px;margin:auto}.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin:10px 0}.faq summary{font-weight:700;cursor:pointer}.cta{background:#102b50;color:#fff;text-align:center;padding:58px 20px}.cta h2{margin:0 0 10px}.cta p{color:#c7d7ea}.cta a{display:inline-block;background:#fff;color:var(--theme);font-weight:800;padding:11px 20px;border-radius:9px;margin-top:12px}
    .footer{background:#0d1d33;color:#b8c8dc;padding:52px 0 22px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px}.footer h3{font-size:16px;color:#fff;margin:0 0 14px}.footer p{font-size:13px;margin:6px 0}.footer a{display:block;font-size:13px;margin:8px 0;color:#b8c8dc}.footer a:hover{color:#fff}.footer-brand strong{font-size:21px;color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:32px;padding-top:18px;font-size:12px;text-align:center}
    @media(max-width:900px){.main-nav{display:none}.header-inner{justify-content:space-between}.hamburger{display:block}.header-btns .open-btn{display:none}.hero{padding-top:48px}.puzzle-board{grid-template-columns:repeat(2,1fr)}.cards,.article-preview{grid-template-columns:1fr 1fr}.product-strip{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.mega-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:560px){.container{width:min(100% - 28px,1180px)}.topbar .container{height:auto;min-height:36px;padding:7px 0;display:block;text-align:center}.topbar a{margin:0 5px}.hero h1{font-size:38px;letter-spacing:-1px}.hero-intro p{font-size:15px}.puzzle-board{grid-template-columns:1fr 1fr;gap:7px;padding:7px}.puzzle-piece,.puzzle-gap{min-height:125px;padding:14px 10px}.puzzle-piece h3{font-size:15px}.puzzle-piece p{font-size:11px}.cards,.article-preview,.product-strip,.footer-grid{grid-template-columns:1fr}.section{padding:50px 0}.section-head h2{font-size:27px}.mega-grid{grid-template-columns:1fr}}