.not-found{--nf-accent:#15598c;--nf-navy:#16456e;--nf-navy-dark:#0f3354;--nf-orange:#e8730c;--nf-ink:#28323c;--nf-mut:#7b8894;--nf-line:#e4e9ee;--nf-bg:#f5f6f9;background:var(--nf-bg);min-height:60vh;color:var(--nf-ink);font-family:var(--font-be-vietnam), "Be Vietnam Pro", system-ui, -apple-system, sans-serif;justify-content:center;align-items:center;padding:64px 20px;display:flex}.not-found a{color:inherit;text-decoration:none}.nf-container{text-align:center;width:100%;max-width:560px}.nf-icon{width:72px;height:72px;color:var(--nf-accent);background:#eaf3fb;border-radius:50%;justify-content:center;align-items:center;margin-bottom:20px;font-size:32px;display:inline-flex}.nf-eyebrow{letter-spacing:1px;text-transform:uppercase;color:var(--nf-orange);margin-bottom:8px;font-size:12px;font-weight:800;display:inline-block}.nf-code{color:var(--nf-navy);letter-spacing:-2px;margin:0;font-size:96px;font-weight:900;line-height:1}.nf-title{margin:10px 0 12px;font-size:24px;font-weight:800}.nf-subtitle{color:var(--nf-mut);max-width:440px;margin:0 auto 32px;font-size:15px;line-height:1.7}.nf-actions{flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:40px;display:flex}.nf-btn{border-radius:10px;align-items:center;gap:8px;height:48px;min-height:44px;padding:0 22px;font-size:14.5px;font-weight:700;transition:background .15s,border-color .15s,color .15s;display:inline-flex}.nf-btn-primary{background:var(--nf-navy);color:#fff!important}.nf-btn-primary:hover{background:var(--nf-navy-dark)}.nf-btn-secondary{border:1px solid var(--nf-line);color:var(--nf-ink);background:#fff}.nf-btn-secondary:hover{border-color:var(--nf-accent);color:var(--nf-accent)}.nf-quick{border-top:1px solid var(--nf-line);padding-top:28px}.nf-quick-title{color:var(--nf-mut);margin:0 0 14px;font-size:13px;font-weight:700}.nf-quick-list{flex-wrap:wrap;justify-content:center;gap:10px;margin:0;padding:0;list-style:none;display:flex}.nf-quick-list a{border:1px solid var(--nf-line);background:#fff;border-radius:20px;align-items:center;gap:6px;height:40px;padding:0 16px;font-size:13.5px;font-weight:600;display:inline-flex}.nf-quick-list a:hover{border-color:var(--nf-accent);color:var(--nf-accent)}@media (max-width:1000px){.nf-code{font-size:80px}}@media (max-width:600px){.not-found{padding:48px 16px}.nf-quick-list a{border-radius:22px;height:44px}.nf-code{font-size:64px}.nf-title{font-size:20px}.nf-subtitle{font-size:14px}.nf-actions{flex-direction:column;align-items:stretch}.nf-btn{justify-content:center}.nf-quick-list{gap:8px}}