@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.glass-nav {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.text-shadow {
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.hero-overlay {
    background: linear-gradient(to right, rgba(0,0,0,0.4), rgba(0,0,0,0.1));
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.weixin-trigger {
    position: relative;
}
.weixin-trigger .weixin-qrcode {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 8px;
    padding: 8px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 100;
    width: 144px; /* 128px image + 16px padding */
}
.weixin-trigger .weixin-qrcode img {
    width: 100%;
    height: auto;
    display: block;
}
.weixin-trigger:hover .weixin-qrcode,
.weixin-trigger.active .weixin-qrcode {
    opacity: 1;
    visibility: visible;
}