/* shared_css: 网站全局共享样式 */
body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f7f6;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

h1, h2, h3, h4, h5, h6 {
    color: #2c3e50;
    margin-top: 20px;
    margin-bottom: 10px;
}

p {
    margin-bottom: 10px;
}

a {
    color: #007bff;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #0056b3;
    text-decoration: underline;
}

.button {
    display: inline-block;
    background-color: #007bff;
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    transition: background-color 0.3s ease;
    border: none;
    cursor: pointer;
}

.button:hover {
    background-color: #0056b3;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2.5em;
    color: #2c3e50;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: #007bff;
    margin: 10px auto 0;
    border-radius: 2px;
}

/* 响应式设计基础 */
@media (max-width: 768px) {
    .container {
        padding: 0 10px;
    }
    .section-title {
        font-size: 2em;
    }
}

/* 常用工具类 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mb-20 { margin-bottom: 20px; }
.mt-20 { margin-top: 20px; }
.py-40 { padding-top: 40px; padding-bottom: 40px; }

/* Card styles */
.card {
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    padding: 25px;
    margin-bottom: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.card-title {
    font-size: 1.5em;
    color: #007bff;
    margin-bottom: 15px;
}

.card-text {
    font-size: 0.95em;
    color: #666;
}

/* Flexbox helpers */
.d-flex { display: flex; }
.justify-content-center { justify-content: center; }
.align-items-center { align-items: center; }
.flex-wrap { flex-wrap: wrap; }

/* Grid System (simple) */
.row {
    display: flex;
    flex-wrap: wrap;
    margin-left: -15px;
    margin-right: -15px;
}

.col-md-4 {
    flex: 0 0 33.333333%;
    max-width: 33.333333%;
    padding-left: 15px;
    padding-right: 15px;
}

@media (max-width: 768px) {
    .col-md-4 {
        flex: 0 0 100%;
        max-width: 100%;
    }
}
/* 移动端内容区防溢出（系统追加，请勿删除） */
@media (max-width: 768px) {
  .page-content img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
  .page-content {
    overflow-x: hidden;
    max-width: 100%;
  }
  body {
    overflow-x: hidden;
  }
}