:root {
    --blue: #264EFF;
    --orange: #F7A722;
    --ink: #0E1320;
    --muted: #6B7280;
    --bg: #F3F4FB;
    --surface: #FFFFFF;
    --line: #E5E7F0;
    --wrap: 1200px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0
}
body {
    font-family: "Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
    background: var(--bg);
    color: var(--ink);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
a {
    text-decoration: none;
    color: var(--blue);
    transition: var(--transition)
}
.container {
    text-align: center;
    max-width: 600px;
    padding: 40px;
}
.error-code {
    font-size: clamp(120px,20vw,200px);
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(135deg,var(--blue),var(--orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}
h1 {
    font-size: clamp(28px,5vw,40px);
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--ink);
}
p {
    font-size: 18px;
    color: var(--muted);
    margin-bottom: 32px;
    line-height: 1.7;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 999px;
    background: var(--blue);
    color: #fff;
    font-weight: 700;
    font-size: 16px;
    box-shadow: 0 8px 24px rgba(38,78,255,.3);
    transition: var(--transition);
    margin: 8px;
}
    .btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 12px 32px rgba(38,78,255,.4);
    }
.btn-outline {
    background: transparent;
    border: 2px solid var(--blue);
    color: var(--blue);
    box-shadow: none;
}
    .btn-outline:hover {
        background: var(--blue);
        color: #fff;
    }
.links {
    margin-top: 40px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}
    .links a {
        color: var(--muted);
        font-size: 14px;
        font-weight: 600;
    }
        .links a:hover {
            color: var(--blue);
        }
@media(max-width:768px) {
    .container {
        padding: 20px;
    }
    .error-code {
        font-size: 100px;
    }
}