/* 基础样式 - 所有页面共用 */
:root {
    --primary-color: #4285f4;
    --secondary-color: #34a853;
    --accent-color: #ea4335;
    --light-color: #f8f9fa;
    --dark-color: #202124;
    --gray-color: #5f6368;
    --border-radius: 8px;
    --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    }
body {
    background-color: #f5f5f5;
    color: var(--dark-color);
    line-height: 1.6;
}
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
header {
    background-color: white;
    box-shadow: var(--box-shadow);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
}
.nav-links {
    display: flex;
    gap: 20px;
}
.nav-links a {
    text-decoration: none;
    color: var(--gray-color);
    font-weight: 500;
    transition: color 0.3s;
}
.nav-links a:hover {
    color: var(--primary-color);
}
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
}
.btn-primary {
    background-color: var(--primary-color);
    color: white;
}
.btn-primary:hover {
    background-color: #3367d6;
}
.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}
.btn-secondary:hover {
    background-color: #2d9249;
}
.card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 20px;
    margin-bottom: 20px;
}
.card-title {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--dark-color);
    font-weight: 600;
}
.form-group {
    margin-bottom: 15px;
}
.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 16px;
}
.form-group textarea {
    min-height: 80px;
    resize: vertical;
}
footer {
    text-align: center;
    padding: 20px 0;
    color: var(--gray-color);
    font-size: 14px;
}
/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .container {
        width: 95%;
    }
}