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

body {
    background-color: #f8fafc; 
    color: #1e293b;
    font-family: 'Inter', sans-serif;
    -webkit-font-smoothing: antialiased;
}

header {
    background-color: #ffffff;
    padding: 4rem 2rem;
    text-align: center;
    border-bottom: 1px solid #e2e8f0;
}

header h1 {
    font-size: 2.2rem;
    font-weight: 600;
    letter-spacing: -1px;
    color: #0f172a;
    margin-bottom: 10px;
}

header p {
    color: #64748b;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

nav {
    display: flex;
    justify-content: center;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px); 
    padding: 1rem;
    position: sticky;
    top: 0;
    border-bottom: 1px solid #e2e8f0;
    z-index: 100;
}

nav a {
    color: #475569;
    text-decoration: none;
    margin: 0 1.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    transition: 0.2s;
}

nav a:hover {
    color: #3b82f6;
}

main {
    max-width: 800px;
    margin: 3rem auto;
    padding: 0 20px;
}

section {
    background: white;
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    margin-bottom: 2rem;
    border: 1px solid #f1f5f9;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #0f172a;
    display: flex;
    align-items: center;
}

h2::before {
    content: "";
    width: 4px;
    height: 24px;
    background: #3b82f6;
    margin-right: 12px;
    border-radius: 2px;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 2rem 0;
    filter: saturate(0.8); 
    transition: 0.3s;
}

img:hover {
    filter: saturate(1.1);
}

p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: #334155;
}

ul {
    list-style: none;
    margin-top: 1.5rem;
}

ul li {
    padding: 12px 15px;
    background: #f8fafc;
    border-radius: 6px;
    margin-bottom: 8px;
    font-family: 'JetBrains Mono', monospace; 
    font-size: 0.9rem;
    color: #3b82f6;
    border: 1px solid #e2e8f0;
}

footer {
    text-align: center;
    padding: 3rem;
    color: #94a3b8;
    font-size: 0.8rem;
}