/* 全局样式 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa, #c3cfe2);
    color: #000;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

section {
    margin-bottom: 40px;
    padding: 20px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h1, h2, h3 {
    color: #0A74DA;
    text-align: center;
}

h1 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
}

h2 {
    font-size: 32px;
    margin-bottom: 15px;
}

p {
    font-size: 18px;
    line-height: 1.6;
    color: #333;
    text-align: justify;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 8px;
}

button {
    display: inline-block;
    padding: 12px 24px;
    font-size: 18px;
    color: #fff;
    background-color: #0A74DA;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

button:hover {
    background-color: #A3AAAE;
    transform: scale(1.05);
}

a {
    color: #0A74DA;
    text-decoration: none;
}

a:hover {
    color: #A3AAAE;
}

@media (max-width: 768px) {
    h1 {
        font-size: 36px;
    }

    h2 {
        font-size: 28px;
    }

    p {
        font-size: 16px;
    }

    button {
        padding: 10px 20px;
        font-size: 16px;
    }
}

.hero {
    background: linear-gradient(135deg, #0A74DA, #A3AAAE);
    color: #fff;
    text-align: center;
    padding: 60px 20px;
    border-radius: 8px;
    margin-bottom: 40px;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.feature-item {
    text-align: center;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 8px;
}

.footer {
    background: #0A74DA;
    color: #fff;
    text-align: center;
    padding: 20px;
    border-radius: 8px;
}