:root {
    --bg-color: #f7f3e8;
    --text-color: #2c3e50;
    --accent-color: #c0392b;
}

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

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
    font-weight: 300;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    text-align: center;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 40px 20px;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
}

header {
    margin-bottom: 0;
}

.logo-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.logo {
    max-width: 60px; /* 原来是120px，缩小一半 */
    height: auto;
    object-fit: cover;
}

h1 {
    font-size: 2.2rem;
    font-weight: normal;
    letter-spacing: 4px; /* 增加字间距，更有呼吸感 */
    color: var(--text-color);
    margin-top: 10px;
}

/* 移除 h1 下划线 */

.hero {
    margin-bottom: 80px; /* 增加留白 */
}

.slogan {
    font-size: 2.2rem;
    color: #444; /* 稍微加深一点点，增加对比度 */
    font-weight: 300;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8; /* 字体变大后，行高稍微减小一点，避免太松散 */
}

.cta-section {
    display: flex;
    justify-content: center;
    margin-bottom: 60px;
}

.qrcode-card {
    /* 移除背景和阴影 */
    text-align: center;
}

.qrcode {
    width: 180px;
    height: 180px;
    object-fit: contain;
    margin-bottom: 15px;
    /* 移除额外的padding和背景色，直接展示 */
}

.qrcode-card p {
    font-size: 0.85rem;
    color: #666;
    letter-spacing: 1px;
}

.action-btn-container {
    margin-top: 10px;
    margin-bottom: 20px;
}

.btn {
    display: inline-block;
    padding: 10px 24px;
    background-color: transparent;
    color: var(--text-color);
    text-decoration: none;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 300;
    transition: all 0.3s ease;
    letter-spacing: 1px;
    border: 1px solid var(--text-color);
}

.btn:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
    cursor: pointer;
}

footer {
    /* 移除顶部边框 */
    font-size: 0.75rem;
    color: #aaa;
    letter-spacing: 1px;
    margin-top: auto; /* 确保 footer 在底部 */
}

/* 响应式调整 */
@media (max-width: 600px) {
    .container {
        padding: 20px;
    }
    
    header {
        margin-bottom: 20px;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    .hero {
        margin-bottom: 30px;
    }
    
    .slogan {
        font-size: 1.8rem;
        padding: 0 10px;
        line-height: 1.4;
    }
    
    .qrcode {
        width: 150px;
        height: 150px;
    }
}