:root{--brand: #d64550;--brand-hover: #c03a44;--brand-pressed: #a93240;--brand-soft: #fdeef0;--brand-border: #f3c6cb;--bg: #f7f8fa;--surface: #ffffff;--text-strong: #1f262f;--text: #3b4652;--text-muted: #5d6874;--text-faint: #8b949d;--border: #ececf0;--border-strong: #dcdfe4;--success: #269663;--warning: #e9a85a;--info: #347fd7;--error: #dd5663;--radius-xs: 4px;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 10px;--radius-xl: 14px;--radius-2xl: 16px;--radius-full: 9999px;--radius-card: 14px;--radius-btn: 8px;--radius-tag: 6px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-7: 28px;--space-8: 32px;--shadow-card: 0 8px 24px rgba(43, 49, 63, .05);--shadow-card-strong: 0 10px 28px rgba(37, 45, 56, .08);--shadow-soft: 0 2px 10px rgba(43, 49, 63, .04)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text-strong);-webkit-font-smoothing:antialiased;touch-action:manipulation}h1,h2,h3{text-wrap:balance}