/* 全局样式 */
:root {
    --primary-color: #005CAF;
    --secondary-color: #0078D7;
    --accent-color: #00A0E9;
    --text-color: #333333;
    --light-text: #ffffff;
    --dark-bg: #1A1A1A;
    --light-bg: #F5F8FA;
    --grey-color: #ECECEC;
    --border-color: #E1E4E8;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

section {
    padding: 80px 0;
}

/* 通用标题样式 */
.section-title {
    position: relative;
    margin-bottom: 50px;
    text-align: center;
}

.section-title h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2:after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -10px;
    width: 60px;
    height: 3px;
    background: var(--accent-color);
    transform: translateX(-50%);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 25px;
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: #fff;
}

/* 响应式样式 */
@media screen and (max-width: 991px) {
    section {
        padding: 60px 0;
    }
    .section-title h2 {
        font-size: 28px;
    }
}

@media screen and (max-width: 767px) {
    section {
        padding: 40px 0;
    }
    .section-title h2 {
        font-size: 24px;
    }
}