*{box-sizing:border-box}html,body{max-width:100%;overflow-x:clip}body{margin:0;font-family:'Hind Siliguri','Noto Sans Bengali',system-ui,-apple-system,sans-serif;color:var(--text);line-height:1.75;background:radial-gradient(circle at 12% 0%,rgba(239,68,68,.28),transparent 32%),radial-gradient(circle at 88% 12%,rgba(249,115,22,.2),transparent 30%),linear-gradient(180deg,#020617 0%,#0b1220 52%,#020617 100%)}a{color:inherit}.error-section{padding:4.5rem 0}.error-card,.help-card{height:auto;border-radius:28px;background:linear-gradient(145deg,rgba(17,24,39,.96),rgba(2,6,23,.9));border:1px solid var(--line);box-shadow:0 24px 60px rgba(0,0,0,.38);overflow-wrap:anywhere}.error-card{padding:2.2rem}.help-card{padding:1.35rem}.error-code{display:inline-flex;align-items:center;gap:.6rem;color:var(--text-light);background:linear-gradient(135deg,var(--deep),var(--primary),var(--orange));border-radius:999px;padding:.45rem 1rem;font-weight:700;box-shadow:0 12px 28px rgba(239,68,68,.28)}h1,h2,h3{font-weight:700;letter-spacing:-.02em}h1{font-size:clamp(2.2rem,6vw,4.6rem);line-height:1.12;margin-top:1rem}h2{font-size:clamp(1.45rem,3vw,2.1rem);color:var(--text-light)}h3{font-size:1.15rem;color:var(--text-light)}.text-soft{color:var(--muted)}.btn-red{background:linear-gradient(135deg,var(--primary),var(--orange));color:var(--text-light);border:none;border-radius:999px;padding:.9rem 1.35rem;font-weight:700;box-shadow:0 14px 30px rgba(239,68,68,.28);white-space:normal}.btn-red:hover,.btn-red:focus{color:var(--text-light);background:linear-gradient(135deg,var(--deep),var(--primary))}.btn-outline-red{color:#fecaca;border:1px solid rgba(239,68,68,.7);border-radius:999px;padding:.9rem 1.35rem;font-weight:700;background:rgba(17,24,39,.68);white-space:normal}.btn-outline-red:hover,.btn-outline-red:focus{color:var(--text-light);background:rgba(185,28,28,.78)}.icon-box{width:48px;min-width:48px;aspect-ratio:1/1;display:inline-flex;align-items:center;justify-content:center;border-radius:16px;background:linear-gradient(135deg,var(--deep),var(--primary));color:var(--text-light);font-size:1.35rem;margin-bottom:.85rem}.note{border-left:4px solid var(--primary);background:rgba(239,68,68,.12);border-radius:18px;padding:1rem 1.1rem;color:#fee2e2}@media (max-width:991.98px){.error-section{padding:3rem 0}.error-card{padding:1.35rem}}