:root{color-scheme:light;--bg:#ffffff;--fg:#111111;--muted:#666666;--border:#e2e2e2;--accent:#111111}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a{color:inherit}.container{max-width:880px;margin:0 auto;padding:2rem 1.25rem}.card{border:1px solid var(--border);border-radius:10px;padding:1.25rem;margin-bottom:1rem}.progress-bar{height:8px;border-radius:4px;background:var(--border);overflow:hidden}.progress-bar-fill{height:100%}.btn,.progress-bar-fill{background:var(--accent)}.btn{display:inline-block;padding:.6rem 1rem;border-radius:8px;border:1px solid var(--accent);color:#fff;cursor:pointer;font-size:.9rem}.btn.secondary{background:transparent;color:var(--accent)}input,select{padding:.5rem;border:1px solid var(--border);border-radius:6px;font-size:.9rem}.locked{color:var(--muted)}.error-text{color:#b00020;font-size:.85rem}