:root{color-scheme:light;--bg-start:#ffffff;--bg-end:#f4f8fb;--text-main:#0f172a;--text-subtle:#475569;--brand:#14b8a6;--brand-deep:#0f766e;--brand-accent:#0891b2;--line:#d7e4f0;--line-strong:#c6d5e4}*{box-sizing:border-box}body,html{margin:0;padding:0;min-height:100%}body{font-family:Avenir Next,Helvetica Neue,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;color:var(--text-main);background:radial-gradient(circle at top left,rgba(20,184,166,.12),transparent 34%),radial-gradient(circle at 100% 0,rgba(8,145,178,.12),transparent 28%),linear-gradient(180deg,var(--bg-start) 0,var(--bg-end) 100%)}button,input,textarea{font:inherit}a{color:inherit;text-decoration:none}