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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: #e0e0e0;
  background: #1a1a1a;
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

h1 {
  color: #4fc3f7;
  border-bottom: 3px solid #4fc3f7;
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
  font-size: 2rem;
}

h2 {
  color: #81c784;
  margin-top: 2rem;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

h3 {
  color: #ffb74d;
  margin-top: 1.5rem;
  margin-bottom: 0.8rem;
  font-size: 1.2rem;
}

p {
  margin-bottom: 1rem;
}

strong {
  color: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  background: #2a2a2a;
  border-radius: 8px;
  overflow: hidden;
}

th {
  background: #333;
  color: #4fc3f7;
  padding: 0.8rem;
  text-align: left;
  font-weight: 600;
}

td {
  padding: 0.8rem;
  border-top: 1px solid #444;
}

tr:hover {
  background: #333;
}

code {
  background: #2a2a2a;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-family: "Monaco", "Menlo", "Courier New", monospace;
  color: #ce93d8;
  font-size: 0.9em;
}

pre {
  background: #2a2a2a;
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
  margin: 1rem 0;
  border-left: 4px solid #4fc3f7;
}

pre code {
  background: none;
  padding: 0;
}

hr {
  border: none;
  border-top: 2px solid #444;
  margin: 2rem 0;
}

a {
  color: #4fc3f7;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

ul, ol {
  margin-left: 2rem;
  margin-bottom: 1rem;
}

li {
  margin-bottom: 0.5rem;
}

.mermaid {
  background: #fff;
  padding: 2rem;
  border-radius: 8px;
  margin: 1rem 0;
}

nav {
  background: #2a2a2a;
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 2rem;
}

nav a {
  margin-right: 1.5rem;
  font-weight: 600;
}

.score-badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.9em;
}

.score-high {
  background: #2e7d32;
  color: #fff;
}

.score-medium {
  background: #f57c00;
  color: #fff;
}

.score-low {
  background: #c62828;
  color: #fff;
}

footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid #444;
  color: #888;
  font-size: 0.9em;
  text-align: center;
}