.layout-container:has(.not-found-page):before{z-index:0;pointer-events:none;content:"";background-color:#0000;background-image:linear-gradient(#12141694 0%,#121416b3 48%,#121416d6 100%),url(/404.png);background-position:50%;background-repeat:no-repeat;background-size:100% 100%;background-attachment:scroll,scroll;background-origin:padding-box,padding-box;background-clip:border-box,border-box;position:fixed;inset:0}:is(.layout-container:has(.not-found-page) .site-header,.layout-container:has(.not-found-page) .layout-main,.layout-container:has(.not-found-page) .layout-footer){z-index:1;position:relative}.not-found-page{place-items:center;width:100vw;min-height:100vh;margin:-28px calc(50% - 50vw) -44px;padding:30px 20px;display:grid}.not-found-card{background:linear-gradient(180deg, #ffffff0f, #ffffff05), var(--bg-panel);width:min(100%,760px);box-shadow:var(--shadow-xl);border-radius:12px;padding:42px;position:relative;overflow:hidden}.not-found-card:before{pointer-events:none;content:"";border:1px solid #58708214;border-radius:8px;position:absolute;inset:18px}.not-found-code{color:var(--accent-blue);letter-spacing:.08em;margin-bottom:12px;font-family:Georgia,Times New Roman,serif;font-size:clamp(4rem,12vw,7rem);display:inline-block}.not-found-kicker{color:var(--accent-terracotta);text-transform:uppercase;letter-spacing:.14em;margin-bottom:16px;font-size:12px}.not-found-card h1{max-width:16ch;margin-bottom:16px;font-family:Georgia,Times New Roman,serif;font-size:clamp(2rem,5vw,3.4rem);line-height:1}.not-found-text{max-width:48ch;color:var(--text-muted);line-height:1.8}.not-found-divider{background:linear-gradient(90deg, var(--accent-terracotta), var(--accent-sage), transparent);width:140px;height:1px;margin:26px 0 22px}.back-button{color:#1d2022;cursor:pointer;background:linear-gradient(135deg, var(--accent-stone), #b8a48f);border:none;border-radius:10px;min-height:52px;padding:0 20px;font-weight:600;transition:transform .4s,box-shadow .4s,filter .4s}.back-button:hover{filter:brightness(1.03);transform:translateY(-2px);box-shadow:0 18px 34px #090b0d3d}@media (max-width:640px){.not-found-card{padding:24px 18px}}