:root{--color-bg: #141414;--color-surface: #1e1e1e;--color-surface-alt: #282828;--color-border: #333;--color-text-primary: #e8e8e8;--color-text-secondary: #999;--color-text-muted: #666;--color-accent: #5aa87e;--color-accent-hover: #6fc296;--color-highlight: #d4a853;--color-danger: #a04040;--color-danger-hover: #b85555;color-scheme:dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.6;font-weight:400;color:var(--color-text-primary);background-color:var(--color-bg);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}:root[data-theme=light]{--color-bg: #f5f5f5;--color-surface: #ffffff;--color-surface-alt: #ededed;--color-border: #d0d0d0;--color-text-primary: #222;--color-text-secondary: #555;--color-text-muted: #7a7a7a;--color-accent: #3f7f61;--color-accent-hover: #2f664d;--color-highlight: #9b6b22;--color-danger: #b24747;--color-danger-hover: #9d3e3e;color-scheme:light}*,*:before,*:after{box-sizing:border-box}a{font-weight:500;color:var(--color-accent);text-decoration:none}a:hover{color:var(--color-accent-hover)}body{margin:0;min-width:320px;min-height:100vh;background:var(--color-bg);color:var(--color-text-primary)}.theme-toggle{background:none;border:1px solid var(--color-border);color:var(--color-text-secondary);font-size:.9rem;font-weight:500;cursor:pointer;padding:.5rem 1.25rem;border-radius:6px;transition:all .15s ease}.theme-toggle:hover{color:var(--color-text-primary);background:var(--color-surface-alt);border-color:var(--color-accent)}h1{font-size:2rem;font-weight:600;line-height:1.2;letter-spacing:-.02em;margin:0 0 .5rem}h2{font-size:1.4rem;font-weight:600;line-height:1.3;margin:0 0 .5rem}h3{font-size:1.1rem;font-weight:600;line-height:1.4;margin:0 0 .5rem}p{margin:0 0 .5rem}button{border-radius:6px;border:1px solid var(--color-border);padding:.5em 1em;font-size:.9rem;font-weight:500;font-family:inherit;background-color:var(--color-surface-alt);color:var(--color-text-primary);cursor:pointer;transition:background-color .15s ease,border-color .15s ease}button:hover{background-color:var(--color-border);border-color:var(--color-text-muted)}button:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}#app{max-width:1200px;margin:0 auto;padding:0}.ascii-art{font-family:Courier New,Courier,monospace;font-size:1.2rem;line-height:1.15;margin:0;white-space:pre;color:var(--color-text-primary);pointer-events:none}.upgrade-icon,.achievement-icon{font-family:Courier New,Courier,monospace;font-weight:700;letter-spacing:.02em}