:root{--color-primary:#2563eb;--color-primary-hover:#1d4ed8;--color-primary-active:#3b82f6;--color-primary-bg:#dbeafe;--text-primary:#0f172a;--text-secondary:#334155;--text-auxiliary:#64748b;--text-placeholder:#94a3b8;--border-color:#cbd5e1;--border-light:#e2e8f0;--bg-card:#fff;--bg-page:#f1f5f9;--bg-hover:#f8fafc;--bg-input:#fff;--color-success:#10b981;--color-warning:#f59e0b;--color-danger:#ef4444;--color-info:#8b5cf6;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--space-2xl:48px;--space-3xl:64px;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-full:9999px;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 6px -1px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a;--shadow-xl:0 20px 25px -5px #0000001a;--font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--font-h1:28px;--font-h2:22px;--font-h3:18px;--font-body:15px;--font-small:13px;--font-caption:11px;--font-weight-regular:400;--font-weight-medium:500;--font-weight-semibold:600;--line-height-h1:1.3;--line-height-h2:1.4;--line-height-body:1.6;--navbar-height:56px;--tabbar-height:64px}[data-theme=dark]{--text-primary:#d1d5db;--text-secondary:#9ca3af;--text-auxiliary:#6b7280;--text-placeholder:#4b5563;--border-color:#374151;--border-light:#1f2937;--bg-card:#111827;--bg-page:#0b1120;--bg-hover:#1f2937;--bg-input:#1f2937;--shadow-sm:0 1px 2px #0000004d;--shadow-md:0 4px 6px -1px #0006;--shadow-lg:0 10px 15px -3px #0006;--shadow-xl:0 20px 25px -5px #0006}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--text-primary:#d1d5db;--text-secondary:#9ca3af;--text-auxiliary:#6b7280;--text-placeholder:#4b5563;--border-color:#374151;--border-light:#1f2937;--bg-card:#111827;--bg-page:#0b1120;--bg-hover:#1f2937;--bg-input:#1f2937;--shadow-sm:0 1px 2px #0000004d;--shadow-md:0 4px 6px -1px #0006;--shadow-lg:0 10px 15px -3px #0006;--shadow-xl:0 20px 25px -5px #0006}}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}body{font-family:var(--font-family);font-size:var(--font-body);font-weight:var(--font-weight-regular);line-height:var(--line-height-body);color:var(--text-primary);background:var(--bg-page);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--color-primary);text-decoration:none}button{font-family:var(--font-family);cursor:pointer;border:none;outline:none}input,textarea,select{font-family:var(--font-family);font-size:var(--font-body);outline:none}#app{flex-direction:column;min-height:100vh;display:flex}