:root{--bg: #ffffff;--bg-subtle: #f7f7f8;--bg-panel: #fafafa;--border: #e3e3e6;--border-strong: #c8c8cc;--text: #1a1a1a;--text-muted: #6a6a72;--accent: #2858d6;--accent-bg: #eaf0ff;--error: #b3261e;--font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace}*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;font-family:var(--font-body);font-size:14px;color:var(--text);background:var(--bg)}body{overflow:hidden}button,select,input{font-family:inherit;font-size:inherit}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}