:root{--border:#e5e7eb;--text:#111827;--muted:#6b7280;--bg:#fff}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);margin:0;padding:0}a{color:inherit;text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1000px;margin:0 auto;padding:0 16px}.main{padding:24px 0 48px}.site-header{border-bottom:1px solid var(--border);background:#fff;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;height:56px;display:flex}.brand{font-weight:700}.nav{gap:16px;display:flex}.nav-link{color:var(--muted)}.nav-link:hover{color:var(--text)}.site-footer{border-top:1px solid var(--border);padding:20px 0}.footer-inner{justify-content:space-between;align-items:center;gap:16px;display:flex}.footer-links{color:var(--muted);gap:16px;display:flex}.muted{color:var(--muted)}h1{margin:0 0 8px;font-size:28px}h2{margin:20px 0 8px;font-size:18px}p,li{color:var(--text);line-height:1.6}.small{color:var(--muted);font-size:14px}.card{border:1px solid var(--border);background:#fff;border-radius:10px;padding:16px}