@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&display=swap');

.doc-single {
    font-family: 'Roboto', sans-serif;
    max-width: 960px;
    margin: 0 auto;
    padding: 40px 20px 64px;
    color: #21272A;
    box-sizing: border-box;
}

.doc-single *,
.doc-single *::before,
.doc-single *::after { box-sizing: border-box; }

.doc-single__back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #697077;
    text-decoration: none;
    margin-bottom: 24px;
    transition: color .15s;
}
.doc-single__back:hover { color: #21272A; }

.doc-single__title {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.15;
    color: #21272A;
    margin: 0 0 24px;
}

.doc-single__video {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
    margin-bottom: 32px;
}
.doc-single__video iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.doc-single__poster { margin-bottom: 32px; }
.doc-single__poster img { width: 100%; height: auto; display: block; }

.doc-single__content {
    font-size: 16px;
    line-height: 1.8;
    color: #21272A;
}
.doc-single__content p { margin: 0 0 1em; }

@media (max-width: 768px) {
    .doc-single { padding: 28px 20px 48px; }
    .doc-single__title { font-size: 26px; }
}