.sg-404 {
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    text-align: center;
}

.sg-404__container {
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
}

.sg-404__code {
    display: block;
    margin-bottom: 15px;
    font-size: clamp(90px, 18vw, 180px);
    font-weight: 800;
    line-height: 0.9;
    opacity: 0.12;
}

.sg-404 h1 {
    margin: 0 0 20px;
    font-size: clamp(32px, 5vw, 54px);
    line-height: 1.1;
}

.sg-404 p {
    max-width: 600px;
    margin: 0 auto 35px;
    font-size: 18px;
    line-height: 1.7;
}

.sg-404__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.sg-404__button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 12px 28px;
    border-radius: 6px;
    background: #000;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
}

.sg-404__button:hover {
    color: #fff;
    opacity: 0.85;
}

.sg-404__link {
    color: inherit;
    font-weight: 600;
    text-decoration: underline;
}

@media (max-width: 600px) {
    .sg-404 {
        padding: 60px 20px;
    }

    .sg-404__actions {
        flex-direction: column;
    }
}