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

body {
    background-color: #ffffff;
    color: #000000;
    line-height: 1.6;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    background-color: #000;
    color: #fff;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

    .logo img {
        height: 60px;
        filter: grayscale(100%); /* Đen trắng logo nếu cần */
    }

    .logo span {
        font-size: 20px;
        font-weight: bold;
        color: #fff;
    }

nav a {
    margin-left: 30px;
    text-decoration: none;
    color: #fff;
    font-weight: 500;
}

    nav a:hover {
        color: #ffcc00;
    }

/* About Container */
.about-container {
    padding: 60px 80px;
    background-color: #fdfdfd;
}

    .about-container section {
        background-color: #fff;
        padding: 30px;
        margin-bottom: 40px;
        border-left: 5px solid #000;
        border-radius: 8px;
        box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    }

    .about-container h1,
    .about-container h2 {
        color: #000;
        margin-bottom: 15px;
    }

    .about-container p, .about-container li {
        font-size: 16px;
        color: #111;
    }

/* Footer */
footer {
    text-align: center;
    padding: 30px;
    background-color: #000;
    color: #fff;
}

.footer-line {
    height: 3px;
    width: 60px;
    background-color: #fff;
    margin: 0 auto 10px auto;
}