:root{--primary:#2563eb;--primary-hover:#1d4ed8;--primary-light:#eaf1fe;--text:#222222;--text-muted:#4a5568;--border:#e2e8f0;--bg:#ffffff;--bg-subtle:#f7fafc;--radius:10px;--header-h:72px;--topbar-h:40px;--max-w:1200px;--font-sans:"Pretendard",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*{box-sizing:border-box;margin:0;padding:0}body,html{max-width:100%;overflow-x:clip}body{font-family:var(--font-sans);color:var(--text);background:var(--bg)}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto}.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 20px}.btn-primary{display:inline-flex;align-items:center;justify-content:center;background:var(--primary);color:#fff;font-weight:700;border:none;border-radius:var(--radius);padding:12px 22px;cursor:pointer;transition:background .15s ease}.btn-primary:hover{background:var(--primary-hover)}