.site-header{position:sticky;top:0;z-index:50;background:var(--color-bg);border-bottom:1px solid var(--color-border)}.site-header-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:60px;padding:0 clamp(20px,4vw,48px)}.site-header-left{display:flex;align-items:baseline;gap:40px}.site-header-logo{font-family:"Noto Serif Display",serif;font-size:22px;font-weight:300;color:var(--color-text);text-decoration:none;letter-spacing:-.01em}.site-header-nav{display:flex;align-items:baseline;gap:24px}.site-header-link{font-size:13px;font-weight:300;color:var(--color-text-muted);text-decoration:none;transition:color .2s}.site-header-link:hover{color:var(--color-text)}.site-header-right{display:flex;align-items:center;gap:16px}.site-header-search{display:none;align-items:center;gap:8px;padding:6px 12px;border:1px solid var(--color-border);border-radius:9999px;background:none;font-family:Geist Mono,monospace;font-size:11px;letter-spacing:.04em;color:var(--color-text-muted);cursor:pointer;transition:all .15s}@media (min-width:640px){.site-header-search{display:flex}}.site-header-search:hover{border-color:var(--color-text-muted);color:var(--color-text)}.site-header-search-key{font-size:10px;text-transform:uppercase;letter-spacing:.15em;opacity:.5}.site-header-theme{width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:none;border:1px solid var(--color-border);border-radius:50%;color:var(--color-text-muted);cursor:pointer;transition:all .2s}.site-header-theme:hover{border-color:var(--color-text-muted);color:var(--color-text)}.site-header-gh{display:flex;align-items:center;color:var(--color-text-muted);text-decoration:none;transition:color .2s}.site-header-gh:hover{color:var(--color-text)}