body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Noto Sans JP,sans-serif}.screen{min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;padding:1.5rem;padding-bottom:env(safe-area-inset-bottom);text-align:center}button{min-height:44px;padding:0 1.5rem;font-size:1rem;border-radius:8px;border:1px solid #ccc;background:#1a2b4c;color:#fff}.error{color:#c0392b}.notice{color:#b8860b;font-size:.85rem}.segment{display:flex;gap:4px;width:100%;max-width:480px}.segment-btn{flex:1;min-height:44px;padding:0;font-size:.9rem;background:#eef1f6;color:#1a2b4c;border:1px solid #ccc}.segment-btn.active{background:#1a2b4c;color:#fff}.steps{display:flex;flex-direction:column;gap:4px;margin:4px 0}.steps-row{display:flex;gap:4px}.step-btn{flex:1;min-height:44px;padding:0;font-size:.85rem;border-radius:8px;border:1px solid #ccc}.step-plus{background:#e8f6ee;color:#1e8f4e;border-color:#bfe3cc}.step-minus{background:#fbeceb;color:#c0392b;border-color:#f0c6c3}.step-btn:active{filter:brightness(.95)}input[type=text]{border:1px solid #b8c1cf;border-radius:8px;background:#f7f9fc;padding:0 .75rem;box-sizing:border-box;color:#1a2b4c;font-size:1rem;transition:border-color .15s,box-shadow .15s}input[type=text]:focus{outline:none;border-color:#1a2b4c;box-shadow:0 0 0 3px #1a2b4c26;background:#fff}input[type=text]::placeholder{color:#9aa5b1}input[type=text].input-required-empty{border-color:#c0392b;background:#fdf3f2}