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

html {
    scroll-behavior: smooth;
}

body {
    line-height: 1.6;
    color: #e0e0e0;
    background: #111111;
    height: 100vh;
}

header {
    background: #111111;
    padding: 20px 0;
    border-bottom: 1px solid #333;
    position: sticky;
    top: 0;
    z-index: 999;
    opacity: 0.8;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 90%;
    max-width: 1600px;
    margin: auto;
}

header h1 {
    font-size: 2rem;
    color: #ffffff;
}

nav a {
    color: #b6b6b6;
    text-decoration: none;
    margin-left: 20px;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: #ffffff;
}

.hero {
    background:
        linear-gradient(180deg,
            #111111,
            #4bbea2
        );
    color: #fff;
    height: 20vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
}

.hero::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
}

.hero div {
    position: relative;
    z-index: 1;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: #ddd;
}

footer {
    color: #ccc;
    padding: 40px 0 20px 0;
    border-top: 1px solid #333;
}

.footer-bottom {
    text-align: center;
    margin-top: 20px;
    font-size: 0.9rem;
    color: #ffffff;
    opacity: 0.3;
    transition: opacity 0.5s;
}

.footer-bottom:hover {
    opacity: 1;  
}

.version-label {
    position: fixed;
    bottom: 10px; 
    right: 10px;  
    background: #333;  
    color: #ffffff; 
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 0.9rem;
    font-weight: bold;
    opacity: 0.4;
    z-index: 1000;   
    transition: opacity 0.5s;
}

.version-label:hover {
    opacity: 1;  
}