:root{--bg: #f5f6f8;--card: #ffffff;--ink: #1a1a1a;--sub: #888;--line: #ececec;--brand: #c0392b;--brand-dark: #a93226;--ok: #27ae60;--warn: #e67e22}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.5}.app{max-width:480px;margin:0 auto;padding:16px 16px 40px}.hero{text-align:center;padding:24px 0 20px}.hero h1{font-size:24px;margin:0 0 6px;color:var(--brand)}.hero .sub{color:var(--sub);font-size:14px;margin:0}.picker{display:flex;flex-direction:column;gap:12px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;text-align:left;cursor:pointer;display:flex;flex-direction:column;gap:4px;transition:transform .1s,box-shadow .1s;font-family:inherit}.card:active{transform:scale(.98)}.card.highlight{border-color:var(--brand);border-width:2px}.card-title{font-size:17px;font-weight:600}.card-desc{font-size:13px;color:var(--sub)}.back{background:none;border:none;color:var(--sub);font-size:14px;padding:4px 0 12px;cursor:pointer;font-family:inherit}.form-block{background:var(--card);border-radius:14px;padding:18px 18px 20px;margin-bottom:16px;border:1px solid var(--line)}.form-block h2{font-size:17px;margin:0 0 14px}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.field-label{font-size:14px;font-weight:500}.field input,.field select{border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:16px;background:#fafafa;font-family:inherit;color:var(--ink)}.field input:focus,.field select:focus{outline:none;border-color:var(--brand);background:#fff}.field-hint{font-size:12px;color:var(--sub)}.calc-btn{width:100%;background:var(--brand);color:#fff;border:none;border-radius:12px;padding:14px;font-size:16px;font-weight:600;cursor:pointer;margin-top:4px;font-family:inherit}.calc-btn:active{background:var(--brand-dark)}.result h2{font-size:17px;margin:8px 0 12px}.result-card{background:var(--card);border-radius:14px;padding:18px 20px;margin-bottom:12px;border:1px solid var(--line)}.result-label{font-size:13px;color:var(--sub)}.result-num{font-size:34px;font-weight:700;color:var(--brand);margin:4px 0}.result-num span{font-size:16px;font-weight:400;color:var(--sub)}.result-break{font-size:14px;color:var(--ink)}.result-meta{font-size:12px;color:var(--sub);margin-top:8px}.ok{color:var(--ok)}.warn{color:var(--warn)}.poll{background:#fff8f7;border:1px solid var(--brand);border-radius:14px;padding:18px 20px;margin-top:16px}.poll-q{font-size:14px;margin:0 0 14px}.poll-btns{display:flex;flex-direction:column;gap:10px}.poll-btns button{padding:12px;border-radius:10px;border:1px solid var(--line);background:#fff;font-size:15px;cursor:pointer;font-family:inherit}.poll-yes{background:var(--brand);color:#fff;border-color:var(--brand);font-weight:600}.poll-thanks{text-align:center;color:var(--sub);font-size:14px;margin:0}.foot{margin-top:28px;font-size:12px;color:var(--sub);text-align:center}.foot .dim{opacity:.7;margin-top:4px}