/* Reset some basics */
body, html {
    margin: 0; padding: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: #f8fafc;
    color: #1e293b; /* dark slate blue-gray */
}

.container {
    max-width: 720px;
    margin: 40px auto;
    background: #fff;
    padding: 30px 40px 40px 40px;
    border-radius: 10px;
    box-shadow: 0 8px 20px rgb(0 0 0 / 0.1);
}

header {
    text-align: center;
    border-bottom: 2px solid #e0e7ff;
    padding-bottom: 20px;
    margin-bottom: 30px;
    position: relative;
}

header h1 {
    font-weight: 700;
    font-size: 2.8rem;
    margin: 0;
    color: #1e40af; /* rich blue */
}

header p {
    font-size: 1.1rem;
    color: #334155; /* slate */
    margin-top: 5px;
}

h2 {
    font-weight: 600;
    font-size: 1.8rem;
    color: #1e40af;
    margin-bottom: 12px;
}

.description p {
    line-height: 1.6;
    margin-bottom: 15px;
    color: #475569;
    font-size: 1rem;
}

.button {
    display: inline-block;
    background-color: #2563eb;
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 12px 28px;
    border-radius: 6px;
    box-shadow: 0 4px 9px rgb(37 99 235 / 0.3);
    transition: background-color 0.3s ease;
}

.button:hover {
    background-color: #1e40af;
}

.note {
    font-size: 0.9rem;
    color: #64748b;
    margin-top: 18px;
}

.version {
    font-size: 0.9em;
    color: #555;
    margin-top: 0.5em;
}

footer {
    text-align: center;
    margin-top: 40px;
    font-size: 0.9rem;
    color: #94a3b8;
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        margin: 20px;
        padding: 20px;
    }
    header h1 {
        font-size: 2rem;
    }
    h2 {
        font-size: 1.5rem;
    }
}

.download-block {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    padding: 1em;
    border-radius: 6px;
    margin-bottom: 1em;
}

.hash-block {
    display: block;
    background-color: #f0f0f0;
    padding: 8px;
    font-family: monospace;
    border-radius: 4px;
    word-break: break-all;
    margin: 0.5em 0;
}

.hash-link {
    text-decoration: none;
    color: #0077cc;
    font-weight: 500;
}

.hash-link:hover {
    text-decoration: underline;
}