.swiper {
    margin-left: 0;
}
.swiper .btn2 {
    z-index: 2;
}
.swiper-slide {
    height: auto;
}
/* ---------- ОБЩИЕ СТИЛИ ДЛЯ КНОПОК НАВИГАЦИИ (круглые, жёлтые) ---------- */
.swiper-button-next.btn2,
.swiper-button-prev.btn2,
.b-about__slider .swiper-button-next,
.b-about__slider .swiper-button-prev,
.b-materials__slider .swiper-button-next,
.b-materials__slider .swiper-button-prev {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #fab800;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: 0.4s ease;
    box-shadow: none;
}

/* SVG внутри кнопок */
.swiper-button-next.btn2 svg,
.swiper-button-prev.btn2 svg,
.b-about__slider .swiper-button-next svg,
.b-about__slider .swiper-button-prev svg,
.b-materials__slider .swiper-button-next svg,
.b-materials__slider .swiper-button-prev svg {
    width: 14px;
    height: 24px;
    display: block;
    fill: #fff;
    margin: 0 auto;
}

/* Ховеры для кнопок */
.b-about__slider .swiper-button-next:hover,
.b-about__slider .swiper-button-prev:hover,
.b-materials__slider .swiper-button-next:hover,
.b-materials__slider .swiper-button-prev:hover {
    background: #fff;
}
.b-about__slider .swiper-button-next:hover svg,
.b-about__slider .swiper-button-prev:hover svg,
.b-materials__slider .swiper-button-next:hover svg,
.b-materials__slider .swiper-button-prev:hover svg {
    fill: #212121;
}

/* Скрываем стандартные иконки Swiper */
.swiper-button-next:after,
.swiper-button-prev:after {
    display: none;
}

/* Смещение для стрелки "вперёд" (опционально) */
.swiper-button-next.btn2 svg {
    transform: translateX(1px);
}

/* ---------- СЛАЙДЕР .b-about__slider ---------- */
.b-about__slider {
    width: 100%;
    max-width: 350px;
    border-radius: 14px;
}

.b-about__slider-slide {
    box-shadow: 5px 15px 40px rgba(30,35,66,0.15);
    background-size: cover;
    background-position: 50%;
}

/* Кнопки навигации внутри .b-about__slider (позиционирование) */
.b-about__slider .swiper-button-next {
    right: 0;
}
.b-about__slider .swiper-button-prev {
    left: 0;
}
.b-about__slider .swiper-button-next,
.b-about__slider .swiper-button-prev {
    top: 50%;
    margin: 0;
    transform: translateY(-50%);
}

/* Слайды: по умолчанию на всю ширину, 16:9 */
.b-about__slider .swiper-slide {
    aspect-ratio: 16 / 9;
    width: 100%;
    background-color: #000;
    flex-shrink: 0;
}
.b-about__slider img.swiper-slide {
    object-fit: cover;
}

/* Медиа внутри слайдов */
.b-about__slider .swiper-slide img,
.b-about__slider .swiper-slide video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Десктопная версия (≥992px) – фиксированная ширина 350px */
@media (min-width: 992px) {
    .b-about__slider .swiper-slide {
        width: 350px;
        max-width: 350px;
        min-width: 0;
    }
}

/* ---------- СЛАЙДЕР .b-materials__slider ---------- */
.b-materials__slider {
    overflow: inherit;
    margin-bottom: 60px;
}

/* Кнопки навигации внутри .b-materials__slider */
.b-materials__slider .swiper-button-next {
    right: -20px;
}
.b-materials__slider .swiper-button-prev {
    left: -20px;
}
.b-materials__slider .swiper-button-next,
.b-materials__slider .swiper-button-prev {
    top: calc(50% - 20px);
    margin: 0;
}

/* Слайды материалов */
.b-materials__slide {
    height: auto;
    opacity: 0;
    visibility: hidden;
    transition: 0.4s ease;
    background: #000;
    box-shadow: 5px 15px 40px rgba(30,35,66,0.15);
    border-radius: 14px;
    overflow: hidden;
}

/* Видимость активного и соседних слайдов */
.b-materials__slide.swiper-slide-active,
.b-materials__slide.swiper-slide-active + .swiper-slide,
.b-materials__slide.swiper-slide-active + .swiper-slide + .swiper-slide,
.b-materials__slide.swiper-slide-active + .swiper-slide + .swiper-slide + .swiper-slide {
    opacity: 1;
    visibility: visible;
}

/* Эффект масштаба для соседних слайдов */
.b-materials__slide.swiper-slide-active + .swiper-slide,
.b-materials__slide.swiper-slide-prev {
    transform: scale(0.9);
    opacity: 0.8 !important;
    visibility: visible !important;
    box-shadow: none;
}

.b-materials__slide-img {
    display: flex;
    width: 100%;
    background-size: cover;
    background-position: 50%;
    object-fit: cover;
    object-position: center;
}
.b-materials__slide-img:before {
    content: '';
    display: block;
    padding-top: 70%;
}

.b-materials__slide-in {
    padding: 29px 24px;
}
.b-materials__slide-title {
    color: #fff;
    font-weight: 800;
    font-size: 18px;
    margin-bottom: 20px;
}
.b-materials__slide-text {
    color: #fff;
    font-size: 14px;
}
.b-materials__slide-text p {
    text-align: justify;
    margin: 0 0 15px;
}
.b-materials__slide-text p:last-child {
    margin: 0;
}
.b-materials__slide-text ul {
    margin: 0;
}
.b-materials__title {
    margin-bottom: 60px;
    font-size: 34px;
    font-weight: 800;
    line-height: 1.2;
    text-transform: uppercase;
    color: #fff;
}