:root {
    --primary-color: #0066cc;
    --text-color: #333;
    --bg-light: #f8f9fa;
    --white: #ffffff;
}

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

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* Sections */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 32px;
    margin-bottom: 10px;
}

.section-title span {
    color: #999;
    font-size: 14px;
    text-transform: uppercase;
}

/* Utilities */
.bg-light {
    background-color: var(--bg-light);
}

/* Floating WeChat Widget */
.floating-wechat {
    position: fixed;
    top: 33%;
    right: 20px;
    z-index: 9999;
}

.wechat-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background-color: #99C44F; /* Light Green */
    color: #fff;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: all 0.3s;
}

.wechat-btn:hover {
    background-color: #8ab346;
}

.wechat-btn i {
    font-size: 32px;
    margin-bottom: 5px;
}

.wechat-btn span {
    font-size: 12px;
}

.wechat-qr-panel {
    position: absolute;
    top: 50%;
    transform: translateY(-50%) translateX(20px); /* Center vertically relative to btn */
    right: 90px; /* Left of the button */
    background: #fff;
    padding: 10px;
    border-radius: 4px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

/* Show panel on hover of the container */
.floating-wechat:hover .wechat-qr-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

.wechat-qr-panel img {
    width: 150px;
    height: 150px;
    display: block;
}

@media (max-width: 768px) {
    .floating-wechat {
        display: none; /* Hide on mobile usually, or adjust */
    }
}