:root{color-scheme:light dark;--bg: #fafaf9;--fg: #1c1c1a;--muted: #6b6b66;--accent: #1f6f54;--card: #ffffff;--border: #e4e2dd;font-family:system-ui,-apple-system,Segoe UI,sans-serif}@media(prefers-color-scheme:dark){:root{--bg: #17181a;--fg: #f1f1ee;--muted: #a0a09a;--accent: #4cc9a0;--card: #202225;--border: #33352f}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);min-height:100vh}#app{max-width:480px;margin:0 auto;padding:32px 20px 60px}h1{font-size:1.4rem;margin:0 0 4px}p.tagline{color:var(--muted);margin:0 0 28px;font-size:.95rem}form{display:flex;gap:8px;margin-bottom:28px}input[type=number]{flex:2;min-width:0;padding:12px 14px;font-size:1.05rem;border:1px solid var(--border);border-radius:10px;background:var(--card);color:var(--fg)}select{flex:1;padding:12px 8px;font-size:1.05rem;border:1px solid var(--border);border-radius:10px;background:var(--card);color:var(--fg)}button{padding:12px 18px;font-size:1.05rem;border:none;border-radius:10px;background:var(--accent);color:#fff;cursor:pointer}button:active{opacity:.85}.result-heading{font-size:1.1rem;margin:0 0 16px}.result-heading .metric{color:var(--muted);font-weight:400;font-size:.9rem}.comparisons{list-style:none;padding:0;margin:0 0 24px;display:flex;flex-direction:column;gap:10px}.comparisons li{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:14px 16px;font-size:1.05rem}.share-link{display:block;font-size:.85rem;color:var(--muted);word-break:break-all;text-decoration:none}.share-link:hover{color:var(--accent)}.empty-state{color:var(--muted);font-size:.95rem}