:root{color-scheme:dark;--bg-start:#161b29;--bg-mid:#0b0d16;--bg-end:#05060a;--card-bg:rgba(9,12,22,.75);--border:hsla(0,0%,100%,.08);--text:#f5f7ff;--muted:#d5dcff;--primary:#89a8ff}*{box-sizing:border-box;padding:0}*,body{margin:0}body{background:radial-gradient(circle at top,var(--bg-start) 0,var(--bg-mid) 60%,var(--bg-end) 100%);color:var(--text);font-family:Segoe UI,Inter,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;min-height:100vh}.error-page,.notice-wrapper{align-items:center;display:flex;justify-content:center;min-height:100vh;padding:2rem}.error-card,.notice-card{-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:var(--card-bg);border:1px solid var(--border);border-radius:18px;box-shadow:0 18px 45px #00000073;padding:2.5rem 2.25rem;text-align:center;width:min(540px,100%)}.badge{background:#89a8ff1f;border:1px solid rgba(137,168,255,.35);border-radius:999px;display:inline-flex;font-size:.8rem;letter-spacing:.08em;margin-bottom:1rem;padding:.35rem .85rem;text-transform:uppercase}h1{font-size:clamp(1.8rem,2vw,2.2rem);letter-spacing:.04em;margin-bottom:1.25rem}p{color:var(--muted);line-height:1.6;margin-bottom:1rem}p:last-of-type{margin-bottom:0}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}