:root{--bg: #f3f5f7;--surface: #ffffff;--surface-soft: #f7fafc;--text: #1f2937;--muted: #6b7280;--line: #e5e7eb;--brand: #0f766e;--brand-weak: #ccfbf1;--danger: #b91c1c;--danger-weak: #fee2e2;font-family:Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at top right,#d1fae5 0%,var(--bg) 35%);color:var(--text)}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button{cursor:pointer}