:root{--bg:#ffffff;--bg-rgb:255,255,255;--panel:#f8f9fa;--text:#111827;--text-secondary:#4b5563;--muted:#9ca3af;--line:#e5e7eb;--brand:#2563eb;--brand-soft:#eff6ff;--shadow:0 4px 20px rgba(0,0,0,0.08)}@media (prefers-color-scheme:dark){:root{--bg:#0b0f19;--bg-rgb:11,15,25;--panel:#111827;--text:#f9fafb;--text-secondary:#d1d5db;--muted:#6b7280;--line:#1f2937;--brand:#3b82f6;--brand-soft:rgba(59,130,246,0.12);--shadow:0 4px 24px rgba(0,0,0,0.35)}}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,PingFang SC,Microsoft YaHei,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}button,input,textarea{font-family:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}.app-wrapper{min-height:100vh;display:flex;flex-direction:column}.app-main{flex:1 1}.app-footer{padding:16px;text-align:center;font-size:13px;color:var(--text-secondary);border-top:1px solid var(--line);background:var(--bg)}.app-footer-inner{display:inline-flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:center}.app-footer a{color:var(--text-secondary);transition:color .2s}.app-footer a:hover{color:var(--brand);text-decoration:underline}.app-footer-divider{color:var(--muted)}