/* 柔和蓝色系全局背景 */
body {
    background-color: #EFF6FF;
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* 导航栏：半透白+蓝边 */
.glass-nav {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #DBEAFE;
}

.glass-nav.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}

/* 紧凑间距 */
.section-compact {
    padding: 4rem 0;
}

/* 柔和卡片：纯白+轻盈阴影 */
.card {
    background-color: #FFFFFF;
    border-radius: 1.5rem;
    box-shadow: 0 8px 20px -6px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.02);
    transition: all 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 24px -8px rgba(0, 0, 0, 0.08);
}

/* 主按钮：沉稳蓝色 */
.btn-primary {
    background-color: #2563EB;
    color: white;
    border-radius: 2rem;
    padding: 0.6rem 1.5rem;
    font-weight: 500;
    transition: all 0.2s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.btn-primary:hover {
    background-color: #1D4ED8;
    transform: translateY(-1px);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid #2563EB;
    color: #2563EB;
    border-radius: 2rem;
    padding: 0.6rem 1.5rem;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-outline:hover {
    background-color: #EFF6FF;
}

/* 柔和链接 */
.link-soft {
    color: #2563EB;
    transition: color 0.2s;
}

.link-soft:hover {
    color: #1E3A8A;
}

/* 圆润元素 */
.rounded-soft {
    border-radius: 1rem;
}