.error-page{min-height:100vh;padding:0;background:radial-gradient(circle at 15% 20%,rgba(226,163,180,.18),transparent 28%),radial-gradient(circle at 88% 75%,rgba(143,41,72,.09),transparent 30%),var(--cream)}
.error-page .header-inner{justify-content:space-between}.error-page .theme-toggle{display:flex}
.error-main{display:grid;place-items:center;min-height:calc(100vh - 82px);padding:54px 24px}
.error-card{width:min(720px,100%);padding:58px 46px;border:1px solid var(--line);border-radius:28px;background:var(--white);box-shadow:0 24px 80px rgba(76,25,43,.09);text-align:center}
.error-visual{display:flex;align-items:center;justify-content:center;color:var(--wine)}
.error-visual span{font:clamp(76px,14vw,126px)/1 "DM Serif Display",serif}
.error-visual svg{width:clamp(86px,14vw,126px);height:auto;margin:0 -4px;fill:none;stroke:currentColor;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.error-kicker{display:block;margin-top:20px;color:var(--wine);font-size:11px;font-weight:700;letter-spacing:1.8px}
.error-card h1{margin:10px 0 12px;font:clamp(34px,6vw,50px)/1.12 "DM Serif Display",serif}
.error-card>p{max-width:560px;margin:0 auto;color:var(--muted);font-size:15px;line-height:1.75}
.error-actions{display:flex;justify-content:center;gap:12px;margin-top:30px}
.error-actions a{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:999px;font-size:13px;font-weight:700;text-decoration:none}
.error-primary{background:var(--wine);color:#fff}.error-secondary{border:1px solid var(--line);color:var(--ink);background:var(--cream)}
html[data-theme="dark"] .error-page{background:radial-gradient(circle at 15% 20%,rgba(240,142,170,.1),transparent 28%),var(--cream)}
@media(max-width:600px){.error-main{min-height:calc(100vh - 68px);padding:28px 16px}.error-card{padding:42px 20px;border-radius:22px}.error-actions{flex-direction:column}.error-actions a{width:100%}.error-visual span{font-size:72px}.error-visual svg{width:78px}}