body {
margin: 0;
font-family: "Inter", system-ui, sans-serif;
background: radial-gradient(circle at top, #1a1a2e, #0b0b12 70%);
color: #eaeaf0;
}


header {
padding: 3rem 1rem 2rem;
text-align: center;
}


header h1 {
font-size: 2.6rem;
letter-spacing: 0.04em;
}


.subtitle {
margin-top: 0.5rem;
opacity: 0.75;
font-style: italic;
}


nav {
display: flex;
justify-content: center;
gap: 1.5rem;
padding: 0.8rem 0 1.2rem;
backdrop-filter: blur(6px);
}


nav a {
text-decoration: none;
color: #cdd3ff;
padding: 0.45rem 0.9rem;
border-radius: 8px;
transition: background 0.2s ease, color 0.2s ease;
}


nav a:hover {
background: rgba(255,255,255,0.12);
color: #ffffff;
}


nav a.active {
background: linear-gradient(135deg, #6a7cff, #8b5dff);
color: #ffffff;
}


main {
max-width: 900px;
margin: auto;
padding: 1rem 1.2rem 3rem;
}


.card {
background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
border: 1px solid rgba(255,255,255,0.15);
border-radius: 16px;
padding: 1.8rem 1.6rem;
margin-bottom: 1.8rem;
box-shadow: 0 10px 30px rgba(0,0,0,0.35);
}


.card h2 {
margin-top: 0;
color: #f1f3ff;
letter-spacing: 0.03em;
}


.link-list {
list-style: none;
padding: 0;
}


.link-list li {
margin: 0.6rem 0;
}


.link-list a {
color: #d6dbff;
text-decoration: none;
}


.link-list a:hover {
text-decoration: underline;
}


.log {
font-family: "Courier New", monospace;
}


.log.unstable {
border-color: #ff6b6b;
background: linear-gradient(180deg, rgba(255,107,107,0.15), rgba(255,107,107,0.05));
}


footer {
text-align: center;
padding: 2.5rem 1rem 2rem;
opacity: 0.55;
font-size: 0.9rem;
}