:root{--bg: #f4f5f7;--card: #ffffff;--text: #1a1a1a;--muted: #8a8f99;--line: #ececf0;--primary: #ff6a00;--primary-dark: #e85f00;--green: #14b866;--danger: #e23b3b;--radius: 12px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Helvetica Neue,sans-serif;background:var(--bg);color:var(--text);font-size:15px;line-height:1.5}.app{max-width:480px;margin:0 auto;min-height:100vh;background:var(--bg);position:relative;padding-bottom:24px}.topbar{position:sticky;top:0;z-index:10;height:48px;display:flex;align-items:center;justify-content:center;background:var(--card);border-bottom:1px solid var(--line);font-weight:600}.topbar .back{position:absolute;left:12px;color:var(--muted);font-size:15px;background:none;border:none;padding:6px}.page{padding:12px}.card{background:var(--card);border-radius:var(--radius);padding:14px;margin-bottom:12px}.field{margin-bottom:14px}.field 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16px #ff6a0066}.fab:active{background:var(--primary-dark)}
