.navbar ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
}

.navbar ul li {
    margin: 0 15px;
}

.navbar ul li a {
    color: white;
    text-decoration: none;
    font-size: 18px;
    transition: color 0.3s ease;
}

.navbar ul li a:hover {
    color: #ff6347;
}

.navbar ul li a.active {
    color: #ff6347;
}

main {
    padding: 20px;
    text-align: center;
}

.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('background.jpg') no-repeat center center/cover;
    color: white;
    padding: 100px 20px;
    text-align: center;
    animation: fadeIn 2s;
}

.hero h1 {
    font-size: 36px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
}

.hero .btn {
    display: inline-block;
    background-color: #ff6347;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    font-size: 18px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.hero .btn:hover {
    background-color: #e0543b;
}

.pricing-table {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    margin-top: 30px;
}

.plan {
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 20px;
    width: 300px;
    margin: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    animation: slideIn 1s;
}

.plan h3 {
    font-size: 24px;
    margin-bottom: 10px;
}

.plan p {
    font-size: 18px;
    margin-bottom: 20px;
}

.plan ul {
    list-style: none;
    padding: 0;
    margin-bottom: 20px;
}

.plan ul li {
    margin-bottom: 10px;
}

.plan .btn {
    display: inline-block;
    background-color: #ff6347;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    font-size: 18px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.plan .btn:hover {
    background-color: #e0543b;
}

.documentation {
    margin-top: 30px;
}

.doc-section {
    margin-bottom: 20px;
}

.doc-section h3 {
    font-size: 24px;
    margin-bottom: 10px;
}

.doc-section p {
    font-size: 18px;
}


/* 动画 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}