* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
.section-about {
background-image: url(https://www.thedetailingmafia.com/assets/images/our-services/advanced-chemistry/Banner.webp);
background-repeat: no-repeat;
background-size: cover;
background-position: center center;
}
@media (max-width: 500px){
.section-about {
background-color: black;
background-image: none;
}
.about-us h1 {
text-align: center;
}
}
.about-us h1 {
color: white;
padding: 150px 0px;
font-size: 40px;
font-weight: 800;
font-family: "Montserrat", Sans-serif;
font-style: italic;
}
.about-us h1 span{
color: #f00;
}
.section {
margin: 20px 0px;
padding: 20px 0px;
}
@media (max-width:768px){
.about-us h1 {
font-size: 30px;
padding: 90px 0px;
}  
}
/*banner css close*/
/* =========================
   Advanced Chemistry Section
========================= */
.advanced-chemistry-section {
    padding: 60px 10px 30px 10px;
}

.advanced-chemistry-section2 {
    padding: 50px 10px 30px 10px !important;
}

.advanced-heading {
    text-align: center;
    max-width: 1100px;
    margin: 0 auto;
}


.advanced-heading h3 {
    color: black;
    font-weight: 700;
    font-size: 35px;
    margin-bottom: 10px;
}
.advanced-heading h3 span{
    color: red;
}

.advanced-heading h4 {
    font-weight: 600;
    font-size: 25px;
    margin-bottom: 20px;
}

.advanced-heading p {
    font-size: 15px;
    line-height: 1.9;
    text-align: justify;
    margin-bottom: 15px;
}

/* =========================
   Common Grid Section
========================= */
.features-grid-section,
.testing-grid-section {
    padding: 20px 10px 60px;
}

.custom-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.12);
}

.feature-image img {
    width: 100%;
    height: 260px;
    object-fit: cover;
    display: block;
}

.feature-content {
    padding: 24px 22px;
}

.feature-content h2 {
    font-weight: 700;
    color: red;
    font-size: 24px;
    margin-bottom: 15px;
    line-height: 1.3;
}

.feature-content p {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 12px;
    text-align: justify;
}

.feature-content ul {
    margin: 0;
    padding-left: 20px;
}

.feature-content ul li {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 8px;
}

/* =========================
   Heading Section
========================= */
.roll-heading h2 {
    font-weight: 700;
    text-align: center;
    font-size: 37px;
    text-transform: uppercase;
    margin-bottom: 3rem;
}
.roll-heading h2 span{
    color:red;
}

/* =========================
   Responsive
========================= */
@media (max-width: 991px) {
    .custom-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-image img {
        height: 240px;
    }

    .advanced-heading h3 {
        font-size: 30px;
    }

    .roll-heading h2 {
        font-size: 28px;
    }
}

@media (max-width: 767px) {
    .custom-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .advanced-chemistry-section {
        padding: 40px 10px 20px 10px;
    }

    .advanced-chemistry-section2 {
        padding: 30px 10px 20px 10px !important;
    }

    .advanced-heading h3 {
        font-size: 25px;
    }

    .advanced-heading h4 {
        font-size: 22px;
    }

    .advanced-heading p,
    .feature-content p,
    .feature-content ul li {
        font-size: 14px;
    }

    .feature-content h2 {
        font-size: 21px;
    }

    .roll-heading h2 {
        font-size: 24px;
        margin-bottom: 2rem;
    }

    .feature-image img {
        height: 220px;
    }
}