* {
    box-sizing: border-box;
}

html {
    width: 100%;
    min-height: 100%;
}

body {
    width: 100%;
    min-height: 100vh;
    margin: 0;
    padding: 0;
    color: #999;
    font-family: "Segoe UI", sans-serif;
    font-size: 1rem;
    line-height: 1.5;
    text-align: center;
    background-color: #252525;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    overflow-y: auto;
}

a {
    color: inherit;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.footer {
    width: 100%;
    margin-top: auto;
    padding: 1rem;
    background-color: #00818a;
    color: white;
    text-align: center;
    flex-shrink: 0;
}

.topnav {
    width: calc(100% - 2rem);
    max-width: 1200px;
    margin: 1rem auto;
    margin-top: 20px;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
    background-color: #00818a;
    border-radius: 10px;
    overflow: hidden;
    flex-shrink: 0;
}

.topnav a {
    flex: 0 1 auto;
    color: #f2f2f2;
    text-align: center;
    text-decoration: none;
    padding: 0.75rem 1rem;
    font-size: clamp(0.9rem, 2vw, 1.0625rem);
    transition:
        background-color 0.15s ease,
        color 0.15s ease;
}

.topnav a:hover,
.topnav a:focus-visible {
    background-color: #006a72;
}

.hero {
    width: min(calc(100% - 2rem), 1200px);
    margin: 0 auto;
    padding: clamp(2rem, 8vw, 5rem) 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: clamp(1.5rem, 4vw, 4rem);
    text-align: left;
}

.hero h1 {
    margin: 0 0 0.5rem;
    color: #00818a;
    font-size: clamp(1.75rem, 5vw, 3rem);
    line-height: 1.1;
}

.hero h2 {
    margin: 0;
    color: #005f66;
    font-size: clamp(1.2rem, 3vw, 2rem);
    line-height: 1.2;
}

.hero img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
}

@media (max-width: 600px) {
    .topnav {
        width: calc(100% - 1rem);
        margin: 0.5rem auto;
        flex-direction: column;
    }

    .topnav a {
        width: 100%;
        padding: 0.7rem 0.75rem;
    }

    .hero {
        width: calc(100% - 1rem);
        padding: 2rem 0;
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        text-align: center;
    }

    .footer {
        padding: 0.75rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 360px) {
    body {
        font-size: 0.9rem;
    }

    .hero {
        width: calc(100% - 0.75rem);
    }
}