:root{--background:#f5f7ff;--foreground:#0f172a;--color-primary:#1d64ff;--color-primary-dark:#1550d4;--color-primary-light:#e8f0ff;--color-primary-gradient:linear-gradient(135deg, #4a7fd4 0%, #1d64ff 100%);--color-success:#22c55e;--color-warning:#f59e0b;--color-danger:#ef4444;--color-bg:#f5f7ff;--color-surface:#fff;--color-border:#e2e8f0;--color-text:#0f172a;--color-text-secondary:#64748b;--color-text-muted:#94a3b8;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-full:9999px;--shadow-card:0 2px 12px #0f172a0f;--shadow-elevated:0 8px 30px #0f172a1a;--shadow-tab:0 -4px 20px #0f172a0f;--font-size-xs:12px;--font-size-sm:13px;--font-size-base:15px;--font-size-lg:17px;--font-size-xl:20px;--font-size-2xl:24px}*{box-sizing:border-box}body{background:var(--background);color:var(--foreground);min-height:100vh;font-family:var(--font-noto), "Hiragino Sans", "Yu Gothic", sans-serif;margin:0;font-size:16px}button{font-family:inherit}input,select,textarea{font-family:inherit;font-size:16px}