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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem 2rem;
    text-align: center;
}

header h1 { font-size: 2.5rem; margin: 1rem 0; }
header .tagline { font-size: 1.1rem; opacity: 0.95; }
header .badges { margin-top: 1.5rem; }
header .badges img { margin: 0 0.5rem; }
header .logo { width: 140px; height: 140px; }

nav { background: #f5f5f5; padding: 1rem; }
nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: #667eea;
    font-weight: 500;
}

nav a:hover { text-decoration: underline; }

main { max-width: 900px; margin: 0 auto; padding: 2rem; }

section { margin-bottom: 3rem; }
section h2 { font-size: 1.8rem; margin-bottom: 1rem; color: #667eea; }
section h3 { font-size: 1.3rem; margin: 1.5rem 0 0.75rem; color: #555; }

p { margin-bottom: 1rem; }
ul, ol { margin: 0 0 1rem 1.5rem; }
li { margin-bottom: 0.35rem; }

code { background: #f5f5f5; padding: 0.2rem 0.5rem; border-radius: 3px; font-size: 0.92em; }
pre { background: #f5f5f5; padding: 1rem; border-radius: 5px; overflow-x: auto; margin-bottom: 1rem; }
pre code { padding: 0; background: none; }

table { border-collapse: collapse; width: 100%; margin-bottom: 1rem; }
th, td { border: 1px solid #ddd; padding: 0.5rem 0.75rem; text-align: left; vertical-align: top; }
th { background: #f0f0f8; }

.feature-sig { background: #eef0fb; border-left: 4px solid #667eea; padding: 0.6rem 1rem; margin: 1rem 0 0.5rem; border-radius: 0 5px 5px 0; font-family: Consolas, Monaco, monospace; font-size: 0.95em; }
.note { background: #fff8e6; border-left: 4px solid #e6b422; padding: 0.75rem 1rem; margin-bottom: 1rem; border-radius: 0 5px 5px 0; }

footer {
    text-align: center;
    padding: 2rem;
    background: #f5f5f5;
    margin-top: 3rem;
    border-top: 1px solid #ddd;
}

footer a { color: #667eea; text-decoration: none; }