.banner {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-Marcellus);
    background-image: url(../../images/banner.webp);
    background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;
    overflow: hidden;
}

/* Animated Gradient Background Overlay */
.banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.3) 0%,
        rgba(255, 255, 255, 0.2) 25%,
        rgba(22, 29, 39, 0.3) 50%,
        rgba(22, 29, 39, 0.2) 75%,
        rgba(255, 255, 255, 0.3) 100%
    );
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    z-index: 1;
    pointer-events: none;
}

/* Gradient Animation */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* Ensure content is above gradient */
.banner > * {
    position: relative;
    z-index: 2;
}

.banner .title {
    color: #d9d9d9;
    text-align: center;
    -webkit-text-stroke-width: 0.5;
    -webkit-text-stroke-color: #fff;
    font-size: 100px;
}

.banner .des {
    color: #ffffff;
    font-size: 50px;
    line-height: 60px; /* 120% */
}

.home-about {
    position: relative;
}

.home-about .mb {
    display: none;
}

.home-about-text {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
}

.home-about-text .col-12 {
    max-width: 552px;
    color: #d1dae6;
}

.home-about-text .col-12 p {
    margin: 12px 0;
}

.home-about-text .col-12 h3 {
    margin: 33px 0 0;
    font-size: 36px;
    font-family: var(--font-Marcellus);
}

.home-section {
    display: flex;
    flex-wrap: wrap;
}

.home-section .item {
    position: relative;
}

.home-section .item .item-text {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    color: #d1dae6;
    font-family: var(--font-Marcellus);
    font-size: 70px;
    font-weight: 400;
    line-height: 24px; /* 34.286% */
}

.home-product .item {
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
}

.home-product .item .img {
    width: 56.25%;
}

.home-product .item .text {
    width: 43.75%;
    background: #ebeef3;
    padding: 0 56px;
    display: flex;
    align-items: center;
    color: #212540;
}

.home-product .text .name {
    font-family: var(--font-Marcellus);
    font-size: 60px;
}

.home-product .text .excerpt {
    margin-top: 32px;
    color: #212540;
    font-size: 20px;
    line-height: 160%; /* 32px */
    letter-spacing: 0.2px;
}

.home-product .btn-catalysis {
    margin-top: 48px;
}

.home-section .item:nth-child(2n + 1) .item-text .row {
    text-align: right;
}

@media (min-width: 820px) {
}

@media (max-width: 820px) {
    .home-about .dt {
        display: none;
    }
    .home-about .mb {
        display: block;
    }
    .banner .title {
        font-size: 50px;
    }
    .banner .des {
        font-size: 20px;
    }
    .home-product,
    .home-section,
    .home-about {
        margin-top: 30px;
    }
    .home-about-text {
        text-align: center;
        position: relative;
        background: #1e181c;
        padding: 37px 29px;
    }
    .home-about-text::before {
        content: "";
        position: absolute;
        top: -59px;
        left: 0;
        width: 100%;
        height: 59px;
        background: linear-gradient(
            0deg,
            #1e181c 0%,
            rgba(30, 24, 28, 0) 111.11%
        );
    }
    .home-about-text .col-12 p {
        font-size: 12px;
    }
    .home-about-text .col-12 h3 {
        font-size: 20px;
    }
    .home-section .item .item-text {
        font-size: 30px;
        padding-right: 50px;
    }
    .home-section .item:nth-child(2n + 2) .item-text {
        padding-left: 50px;
    }
    .contact-catalysis .two > div,
    .home-product .item .text,
    .home-product .item .img {
        width: 100%;
    }
    .home-product .item .text {
        text-align: center;
        justify-content: center;
        padding-top: 44px;
        padding-bottom: 41px;
    }
    .home-product .text .name {
        font-size: 40px;
    }
    .home-product .text .excerpt {
        margin-top: 15px;
    }
    .home-product .btn-catalysis {
        margin-top: 40px;
        padding: 10.135px 22.847px;
        font-size: 15.231px;
        letter-spacing: 0.457px;
    }
    #contact.container .row > * {
        padding-left: 0;
        padding-right: 0;
    }
}