.site-header{border-bottom:1px solid var(--color-border);background:var(--color-surface);}
.header-row{display:flex;align-items:center;justify-content:space-between;height:64px;}
.logo{font-family:var(--font-serif);font-weight:700;font-size:22px;}
.logo span{color:var(--color-accent);}
.main-nav a{margin:0 12px;font-size:14px;font-weight:600;}
.site-footer{border-top:1px solid var(--color-border);padding:24px 0;color:var(--color-muted);font-size:13px;}

/* Mobile */
.site-header-mobile{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--color-surface);border-bottom:1px solid var(--color-border);}
.header-actions a,.header-actions button{margin-left:16px;background:none;border:none;font-size:18px;}
.mobile-content{padding-bottom:64px;}
.bottom-nav{position:fixed;bottom:0;left:0;right:0;display:flex;justify-content:space-around;background:var(--color-surface);border-top:1px solid var(--color-border);padding:8px 0;}
.bottom-nav a{font-size:11px;font-weight:600;min-height:44px;display:flex;align-items:center;}