:root{--primary:hsl(221,100%,60%);--primary-hover:hsl(221,100%,55%);--bg:#f4f6fb;--surface:#ffffff;--text:#1a1f36;--text-muted:#5c6378;--border:#e2e6ef;--radius:14px;--shadow:0 8px 28px rgba(26,31,54,0.08)}*{box-sizing:border-box}body,html{margin:0;padding:0;min-height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}a{color:inherit}