body.is-404 #sidebar,
body.is-404 #toc,
body.is-404 #mobile-bar,
body.is-404 .footer-nav {
    display: none !important;
}

body.is-404 #content-wrapper {
    padding: 0 !important;
    margin: 0 auto !important;
    max-width: 100% !important;
    width: 100% !important;
}

body.is-404 #content-col,
body.is-404 #main-wrap,
body.is-404 #main-content {
    max-width: 100% !important;
    width: 100% !important;
    margin: 0 !important;
}

body.is-404 .error-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(80vh - 120px);
    padding: 40px 20px;
    box-sizing: border-box;
    text-align: center;
}

body.is-404 .error-code {
    margin: 0 0 16px;
    color: var(--text);
    font-size: clamp(74px, 14vw, 112px);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -2px;
}

body.is-404 .error-title {
    margin: 0 0 24px;
    color: var(--text);
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

body.is-404 .error-desc {
    max-width: 440px;
    margin: 0 0 32px;
    color: var(--muted);
    font-size: 15.5px;
    line-height: 1.6;
}

body.is-404 .btn-home {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 28px;
    border-radius: 9999px;
    background: var(--btn-home-bg);
    color: var(--btn-home-text) !important;
    font-size: 14.5px;
    font-weight: 500;
    text-decoration: none !important;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}