:root{--brand:#F5A623;--brand-600:#E5941A;--brand-050:#FEF4E3;--navy:#1B2A5B;--navy-700:#152142;--navy-050:#EEF0F7;--ink:#1e253f;--muted:#6b7280;--line:#ECEAF2;--bg:#FBFAFC;--card:#ffffff;--good:#16a34a;--warn:#d97706;--bad:#dc2626;--radius:16px;--maxw:820px;--wide:1080px;--shadow:0 10px 30px rgba(27,42,91,.08);--shadow-sm:0 2px 8px rgba(27,42,91,.06)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Poppins,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:var(--brand-600);text-decoration:none}a:hover{text-decoration:underline}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}.wide{max-width:var(--wide);margin:0 auto;padding:0 22px}h1{font-weight:800;letter-spacing:-.02em;line-height:1.12;margin:0 0 16px}h2{font-weight:700;letter-spacing:-.01em}header.site{position:sticky;top:0;z-index:50;background:#ffffffe0;backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line)}header.site .bar{display:flex;align-items:center;justify-content:space-between;max-width:var(--wide);margin:0 auto;padding:12px 22px}.brand{display:flex;align-items:center;gap:10px}.brand:hover{text-decoration:none}.logo{font-weight:800;font-size:20px;letter-spacing:-.02em;line-height:1;padding:8px 14px;border-radius:12px;color:#fff;background:linear-gradient(120deg,#1b2a5b,#7c86be);box-shadow:var(--shadow-sm)}.logo .n{color:#fff}.logo .o{color:var(--brand)}.tag{font-size:11px;font-weight:700;letter-spacing:.14em;color:var(--navy);background:var(--brand-050);border:1px solid #F6E3C2;border-radius:999px;padding:4px 9px}nav.main{display:flex;align-items:center;gap:22px}nav.main a{color:var(--navy);font-weight:600;font-size:14.5px}nav.main a.plain:hover{color:var(--brand-600);text-decoration:none}.navdrop{position:relative}.drop-trigger{cursor:pointer}.navdrop:after{content:"";position:absolute;top:100%;left:-10px;right:-10px;height:14px}.dropmenu{position:absolute;top:calc(100% + 12px);left:50%;transform:translate(-50%) translateY(6px);background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:8px;min-width:190px;opacity:0;visibility:hidden;transition:opacity .15s,transform .15s;z-index:60}.navdrop:hover .dropmenu,.navdrop:focus-within .dropmenu{opacity:1;visibility:visible;transform:translate(-50%) translateY(0)}.dropmenu a{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:9px;color:var(--navy);font-weight:600;font-size:14px}.dropmenu a:hover{background:var(--navy-050);text-decoration:none}.dd-dot{width:10px;height:10px;border-radius:3px;flex:0 0 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