:root {
    --primary: #1e90ff;
    --secondary: #ffb347;
    --background: #f6f8fa;
    --text: #222;
    --accent: #ff6347;
}

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

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
}

header {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    color: #fff;
    padding: 2rem 1rem;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

main {
    max-width: 900px;
    margin: 2rem auto;
    padding: 1rem;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(30,144,255,0.08);
}

section {
    margin-bottom: 2rem;
}

h2 {
    color: var(--primary);
    margin-bottom: 1rem;
}

h3 {
    color: var(--accent);
    margin-bottom: 0.5rem;
}

ul, ol {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--accent);
    text-decoration: underline;
}

.fase {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: #f0f8ff;
    border-left: 5px solid var(--primary);
    border-radius: 8px;
}

footer {
    text-align: center;
    padding: 1rem 0;
    background: var(--primary);
    color: #fff;
    margin-top: 2rem;
    border-radius: 0 0 12px 12px;
}

@media (max-width: 600px) {
    main {
        padding: 0.5rem;
    }
    header h1 {
        font-size: 1.5rem;
    }
}