/* 全局样式 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Montserrat', sans-serif;
    background: linear-gradient(to right, #00264d, #4d0066, #00a39e);
    color: #ffffff;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-weight: bold;
    text-align: center;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(to right, #00264d, #4d0066);
    padding: 15px 20px;
    z-index: 1000;
}

.navbar a {
    color: #ffffff;
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.3s ease;
}

.navbar a:hover {
    color: #00a39e;
}

.navbar .btn {
    background-color: #00264d;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.navbar .btn:hover {
    background-color: #00a39e;
}

/* 中央未来之门样式 */
.future-door {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: radial-gradient(circle, rgba(0, 38, 77, 0.8), transparent),
                linear-gradient(to bottom, #00264d, #4d0066);
    animation: aurora-move 15s linear infinite;
}

@keyframes aurora-move {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

.future-door h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 0 0 10px #00a39e;
}

.future-door p {
    font-size: 1.2rem;
    text-shadow: 0 0 5px #ffffff;
}

/* 卡片式模块样式 */
.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 100px;
}

.card {
    background: linear-gradient(to bottom, #00264d, #4d0066);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: scale(1.05);
}

.card img {
    width: 100%;
    height: auto;
    border-radius: 10px;
}

.card h3 {
    margin-top: 15px;
    font-size: 1.5rem;
}

.card p {
    font-size: 1rem;
    line-height: 1.6;
}

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: linear-gradient(to right, #00264d, #4d0066);
    border-radius: 10px;
    overflow: hidden;
}

table th, table td {
    padding: 10px;
    text-align: left;
    border: 1px solid #ffffff;
}

table th {
    background: #00a39e;
    color: #00264d;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .card-container {
        grid-template-columns: 1fr;
    }

    .navbar {
        flex-direction: column;
    }

    .future-door h1 {
        font-size: 2rem;
    }

    .future-door p {
        font-size: 1rem;
    }
}