.proekt-page__banner {
    margin: 2rem 0;
}

.banner {
    position: relative;
    background: url('../images/3d-banner-bg.jpg') center/cover no-repeat;
    color: #fff;
    padding: 80px 20px;
    text-align: center;
    border-radius: 16px;
    overflow: hidden;
}
.banner::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.6);
}
.banner-content {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    z-index: 1;
}
.banner h2 {
    font-size: 4rem;
    margin-bottom: 1rem;
}
.banner p {
    font-size: 2.2rem;
    margin-bottom: 2.5rem;
    line-height: 3rem;
    text-shadow: 0 0 8px rgba(255, 27, 27, 0.8);
}
.banner-btn {
    display: inline-block;
    padding: 12px 24px;
    background: #feb72b;
    color: #000;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: background 0.3s;
}
.banner-btn:hover {
    background: #e68900;
}
@media (max-width: 768px) {
    .proekt-page__banner {
        margin: 2rem 1rem;
    }
    .banner h2 { font-size: 2.5rem; }
    .banner p { font-size: 2rem; }
}

.product-description__content h2 {
    font-size: 2.5rem;
    line-height: 3rem;
    margin-bottom: 1.5rem;
}

.product-description__content h3 {
    font-size: 2rem;
    line-height: 2.5rem;
}

.product-description__content p {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}
.product-description__content ul {
    margin-bottom: 1.5rem;
}
.product-description__content li {
    font-size: 1.6rem;
    line-height: 2.6rem;
    padding-left: 1rem;
}

.styled-list {
    list-style: none;
    padding-left: 0;
    margin: 1em 0;
}
.styled-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 10px;
}
.styled-list li::before {
    content: "✔";
    position: absolute;
    left: 0;
    top: 0;
    color: #ff9800; /* цвет маркера */
    font-size: 1.2em;
    line-height: 1;
}

.proekt-content__item h2 {
    font-size: 2.5rem;
    line-height: 3rem;
    margin-bottom: 1.5rem;
}