:root{--color-bg:#fcfcfa;--color-surface:#fff;--color-surface-subtle:#f5f6f8;--color-ink:#202124;--color-text:#55585f;--color-muted:#6d7077;--color-border:#e5e7eb;--color-border-strong:#c8cbd1;--color-primary:#3f5ce8;--color-primary-hover:#2948d8;--color-primary-soft:#eef1ff;--color-danger:#c83c3c;--font-sans:Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;--font-mono:"IBM Plex Mono", "SFMono-Regular", Consolas, monospace;--radius-sm:8px;--radius-md:12px;--radius-lg:18px;--radius-pill:999px;--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;--space-6:24px;--space-8:32px;--space-10:40px;--space-12:48px;--space-16:64px;--page-max:1200px;--content-narrow:640px}
*,:before,:after{box-sizing:border-box}html{background:var(--color-bg);color:var(--color-ink);font-family:var(--font-sans);overflow-x:clip}body{min-width:320px;min-height:100vh;margin:0}button,input,textarea,select{font:inherit}:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}