/* =====================================
   公共布局：Header 导航 & Footer 页脚
===================================== */
.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 80px;
}

/* 品牌 Logo 与标题 */
.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo {
    width: 20px;
    height: 20px;
    background-color: var(--accent-red);
    border-radius: 50%;
    flex-shrink: 0;
}

.brand-title {
    font-size: 1rem;
    font-weight: 900;
    letter-spacing: 1.5px;
    color: var(--text-charcoal);
    text-transform: uppercase;
}

.brand:hover .brand-title {
    color: var(--accent-red);
}

/* 极简文本导航 */
.site-nav {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.site-nav a {
    margin: 0 12px;
}

.site-nav a:hover,
.site-nav a.active {
    color: var(--accent-red);
}

/* 极简页脚 */
.site-footer {
    border-top: 1px solid var(--text-charcoal);
    padding-top: 24px;
    margin-top: 100px;
    text-align: center;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
}