* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

#vanta-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background-color: black;
    overflow-x: hidden;
}

.navbar {
    position: fixed;              
    top: 0;                      
    left: 0;
    width: 100%;                 
    z-index: 10;                 
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: black;
    padding: 0 20px;
    height: 60px;
}

.logo-button {
    display: inline-block;
    color: white;
    font-size: 40px;
    font-family: Arial, sans-serif;
    text-decoration: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    margin: 0;
}

.logo-button:hover {
    color: #29fa1e;
}

.defaultNav {
    list-style: none;
    display: flex;
    margin: 0;
    padding: 0;
}

.defaultNav li {
    margin-left: 20px;
}

.defaultNav li a {
    color: white;
    text-decoration: none;
    font-size: 25px;
    transition: color 0.3s ease;
}

.defaultNav li a:hover, .defaultNav li a.active-page {
    color: #29fa1e;
}

.defaultNav li a.active-page {
    text-decoration: underline;
    text-underline-offset: 10px;
    color: #29fa1e;
}

.content {
    max-width: 1200px;
    margin: 100px auto;
    padding: 20px;
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    gap: 40px;
    align-items: center;
    color: white;
}

.about-photo {
    margin: 0;
}

.about-photo img {
    width: 100%;
    max-width: 420px;
    height: auto;
    display: block;
    border-radius: 14px;
    border: 2px solid #29fa1e;
}

.summary {
    color: white;
    font-size: 22px;
    line-height: 1.6;
    max-width: 600px;
    display: flex;
    align-items: center;
}

.summary p {
    margin-bottom: 1.2rem;
}

@media (max-width: 900px) {
    .navbar {
        height: 54px;
        padding: 0 14px;
    }
    body {
        padding-top: 54px;
    }
    .logo-button {
        font-size: 28px;
    }
    .defaultNav {
        flex-wrap: wrap;
        gap: 10px 14px;
    }
    .defaultNav li {
        margin-left: 0;
    }
    .defaultNav li a {
        font-size: 18px;
    }
    .content {
        grid-template-columns: 1fr;
        text-align: left;
        gap: 22px;
        margin: 90px auto;
    }
    .about-photo {
        display: flex;
        justify-content: center;
    }
    .about-photo img {
        max-width: 320px;
    }
    .summary {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .logo-button {
        font-size: 22px;
    }
    .defaultNav li a {
        font-size: 16px;
    }
}