:root{color-scheme:light dark;--bg: #0b0c10;--fg: #eaf2f8;--accent: #61dafb;--muted: #9aa4ad}*,*:before,*:after{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji;background:var(--bg);color:var(--fg)}.container{max-width:920px;padding:32px 20px 80px;margin:0 auto}h1{margin:0 0 8px;font-weight:800;letter-spacing:.2px}.card{margin-top:24px;padding:16px;border-radius:12px;background:#ffffff0a;border:1px solid rgba(255,255,255,.08)}.code{white-space:pre-wrap;word-break:break-word;line-height:1.4;padding:12px;border-radius:8px;background:#ffffff0f}.hint{color:var(--muted);font-size:.9rem}