* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

/* NAVBAR */
.navbar {
    background: #fff;
    border-bottom: 1px solid #ddd;
}

.nav-container {
    max-width: 1200px;
    margin: auto;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    height: 55px;
}

nav a {
    margin-left: 25px;
    text-decoration: none;
    color: #333;
}

nav a.active {
    font-weight: bold;
    border-bottom: 2px solid #333;
}

/* BANNER */
.banner {
    height: 420px;
    background: url("images/STAINOX.jpg") no-repeat center center;
    background-size: cover;
    position: relative;
}

.banner-text {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.45);
}

.banner-text h1 {
    color: #fff;
    font-size: 44px;
}

/* CONTENT */
.csr-wrapper {
    max-width: 1200px;
    margin: 60px auto;
    padding: 0 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
}

.csr-box {
    background: #fff;
    padding: 25px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    border-radius: 6px;
}

.csr-box.full {
    width: 100%;
}

.csr-box.half {
    width: calc(50% - 12.5px);
}

.csr-box h2, 
.csr-box h3 {
    margin-bottom: 12px;
}

.csr-box p {
    margin-bottom: 10px;
    color: #444;
    line-height: 1.6;
}

.csr-box ul {
    margin-left: 20px;
}

.csr-box ul li {
    margin-bottom: 8px;
}

/* FOOTER */
.footer {
    background: #111;
    color: #aaa;
    text-align: center;
    padding: 15px;
}

/* MOBILE */
@media (max-width: 768px) {
    .csr-box.half {
        width: 100%;
    }

    .banner-text h1 {
        font-size: 30px;
        text-align: center;
        padding: 0 20px;
    }
}