:root{color-scheme:light dark;font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7;color:#252132;background:#f7f5fa}*{box-sizing:border-box}body{margin:0}main{max-width:780px;margin:auto;padding:32px 22px 64px}h1{font-size:clamp(26px,5vw,36px);line-height:1.3}h2{font-size:20px;margin-top:0}section{margin-top:28px;padding:24px;border:1px solid #ded8e8;border-radius:16px;background:#fff}a{color:#4c3fd6;text-underline-offset:3px}.back{display:inline-flex;min-height:44px;align-items:center}li+li{margin-top:10px}.choice{display:flex;gap:12px;min-height:44px;align-items:center;cursor:pointer}input{width:22px;height:22px;flex-shrink:0}:focus-visible{outline:3px solid #6d5df6;outline-offset:4px}#metricsStatus{font-size:14px;color:#5a536a}@media(prefers-color-scheme:dark){:root{color:#eeeaf5;background:#15121d}section{background:#211d2b;border-color:#494054}a{color:#c4baff}#metricsStatus{color:#c5bdcf}}@media(max-width:480px){main{padding:20px 16px 48px}section{padding:18px}}