/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

header {
    background-color: #1a1a2e;
    color: white;
    padding: 1rem 0;
    text-align: center;
}

header h1 {
    margin-bottom: 1rem;
}

nav {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

nav a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s;
}

nav a:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.hero {
    text-align: center;
    padding: 2rem 0;
}

.hero h2 {
    margin-bottom: 2rem;
    color: #16213e;
}

.stats {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 2rem;
}

.stat-card {
    background-color: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    min-width: 200px;
    text-align: center;
}

.stat-card h3 {
    font-size: 2rem;
    color: #0f3460;
    margin-bottom: 0.5rem;
}

.error-page {
    text-align: center;
    padding: 4rem 0;
}

.error-page h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #e94560;
}

.error-page p {
    margin-bottom: 2rem;
    font-size: 1.2rem;
}

.btn {
    display: inline-block;
    background-color: #0f3460;
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #16213e;
}

footer {
    text-align: center;
    padding: 2rem 0;
    background-color: #1a1a2e;
    color: white;
    margin-top: 2rem;
}