.sids-embedded * {
    box-sizing: border-box;
}


.sids-embedded .SIDS-site-header,
.sids-embedded header,
.sids-embedded nav,
.sids-embedded main,
.sids-embedded footer {
    margin: 0;
    padding: 0;
}


.sids-embedded {
    font-family: "Segoe UI", Tahoma, Arial, sans-serif;
    background-color: #0b0b0b;
    color: #d0d0d0;
    line-height: 1.6;
}


.sids-embedded .SIDS-site-header {
    background: linear-gradient(180deg, #1e1e1e 0%, #0a0a0a 100%);
    border-bottom: 2px solid #8b0000;
}

.sids-embedded .SIDS-header-inner {
    max-width: 1200px;
    margin: auto;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 25px;
}

.sids-embedded .SIDS-logo img {
    width: 80px;
    filter: grayscale(100%) contrast(120%);
}

.sids-embedded .SIDS-titles h1 {
    font-size: 20px;
    letter-spacing: 2px;
    color: #cfcfcf;
}

.sids-embedded .SIDS-titles h2 {
    font-size: 14px;
    font-weight: normal;
    color: #9a9a9a;
    margin-top: 4px;
}

.sids-embedded .SIDS-titles p {
    font-size: 12px;
    color: #6f6f6f;
    margin-top: 6px;
    font-style: italic;
}

/* NAVIGATION */
.sids-embedded .SIDS-site-nav {
    background-color: #111;
    border-bottom: 1px solid #333;
}

.sids-embedded .SIDS-nav-inner {
    max-width: 1200px;
    margin: auto;
    display: flex;
}

.sids-embedded .SIDS-nav-inner a {
    padding: 12px 20px;
    color: #c0c0c0;
    text-decoration: none;
    font-size: 14px;
    border-right: 1px solid #222;
    transition: background 0.2s, color 0.2s;
}

.sids-embedded .SIDS-nav-inner a:hover {
    background-color: #8b0000;
    color: #fff;
}

/* MAIN */
.sids-embedded .SIDS-main-content {
    max-width: 1000px;
    margin: 100px auto;
    padding: 20px;
    background-color: #0f0f0f;
    border: 1px solid #222;
}

.sids-embedded .SIDS-main-content h1,
.sids-embedded .SIDS-main-content h2,
.sids-embedded .SIDS-main-content h3 {
    color: #dcdcdc;
    border-bottom: 1px solid #333;
    padding-bottom: 6px;
    margin-bottom: 15px;
}

.sids-embedded .SIDS-main-content p {
    margin-bottom: 14px;
    font-size: 15px;
}

.sids-embedded .SIDS-document {
    background-color: #121212;
    border-left: 4px solid #8b0000;
    padding: 15px;
    margin: 20px 0;
    font-family: Consolas, monospace;
    font-size: 14px;
}

/* FOOTER */
.sids-embedded .SIDS-site-footer {
    background-color: #080808;
    border-top: 1px solid #222;
    color: #666;
    text-align: center;
    padding: 15px;
    font-size: 12px;
}


/* MOBILE (scoped) */
@media (max-width: 768px) {
    .sids-embedded .SIDS-header-inner {
        flex-direction: column;
        text-align: center;
    }

    .sids-embedded .SIDS-nav-inner {
        flex-direction: column;
    }

    .sids-embedded .SIDS-nav-inner a {
        border-right: none;
        border-bottom: 1px solid #222;
    }
}

html, body {
    height: 100%;
    margin: 0;
    background: #0b0b0b; /* óáèðàåì áåëûé ôîí ÍÀÂÑÅÃÄÀ */
}

.highlightSCPP2PP {
    background-color: #0a0a0a;
    padding: 10px;
    border-left: 5px solid #8b0000;
    margin: 20px 0;
    font-weight: bold;
}

.nav-buttons4444 {
    display: flex;
    gap: 10px;
    margin-top: 20px;
    justify-content: flex-start;
}

.nav-buttons .back-button,
.nav-buttons .next-button {
    background: #0a0a0a;
    color: #fff;
    padding: 8px 12px;
    border-radius: 8px;
    text-decoration: none;
}


.image-block {
    float: left;
    margin-right: 15px;
    margin-bottom: 20px;
    padding: 0;
    max-width: 300px;
}

    .image-block img {
        width: 100%;
        border: 3px solid #000;
    }