:root{--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;--sat: env(safe-area-inset-top, 0px);--sab: env(safe-area-inset-bottom, 0px);--sal: env(safe-area-inset-left, 0px);--sar: env(safe-area-inset-right, 0px);--bg-page: #090d16;--bg-surface: #0f172a;--bg-elevated: #1e293b;--bg-input: #0b1120;--border-color: rgba(255, 255, 255, .14);--border-hover: rgba(255, 255, 255, .28);--border-focus: #38bdf8;--text-main: #ffffff;--text-muted: #e2e8f0;--text-subtle: #cbd5e1;--accent: #38bdf8;--accent-hover: #0284c7;--accent-gradient: linear-gradient(135deg, #ffffff 10%, #38bdf8 60%, #818cf8 100%);--accent-light: rgba(56, 189, 248, .15);--success: #10b981;--success-light: rgba(16, 185, 129, .15);--warning: #f59e0b;--error: #ef4444;--error-light: rgba(239, 68, 68, .15);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 20px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 4px 14px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 30px rgba(0, 0, 0, .5);--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.5rem;--space-6: 2rem;--space-7: 3rem}[data-theme=light]{--bg-page: #f8fafc;--bg-surface: #ffffff;--bg-elevated: #f1f5f9;--bg-input: #ffffff;--border-color: #e2e8f0;--border-hover: #cbd5e1;--border-focus: #0284c7;--text-main: #0f172a;--text-muted: #475569;--text-subtle: #64748b;--accent: #0284c7;--accent-hover: #0369a1;--accent-gradient: linear-gradient(135deg, #0284c7, #6366f1);--accent-light: rgba(2, 132, 199, .1);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);--shadow-md: 0 4px 14px rgba(0, 0, 0, .08);--shadow-lg: 0 10px 30px rgba(0, 0, 0, .12)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0;scrollbar-width:thin;scrollbar-color:var(--border-hover) 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var(--border-color);padding:2px 5px;border-radius:4px;color:var(--text-subtle);margin-left:2px}.theme-toggle-btn{background:var(--bg-surface);border:1px solid var(--border-color);width:40px;height:40px;min-width:40px;min-height:40px;border-radius:var(--radius-md);color:var(--text-main);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s ease}.theme-toggle-btn:hover{background:var(--border-color);transform:scale(1.04)}.theme-icon-sun{display:none}.theme-icon-moon,[data-theme=light] .theme-icon-sun{display:block}[data-theme=light] .theme-icon-moon{display:none}.mobile-toggle{display:none;flex-direction:column;justify-content:center;align-items:center;gap:5px;width:44px;height:44px;min-width:44px;min-height:44px;background:var(--bg-surface);border:1px solid 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-1}}@media(max-width:540px){.footer-container{grid-template-columns:1fr;gap:1.75rem}}.footer-brand{font-weight:800;font-size:1.15rem;margin-bottom:.5rem;display:flex;align-items:center}.footer-desc{color:var(--text-muted);font-size:.9rem;margin:0;max-width:440px;line-height:1.5}.footer-heading{display:block;font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--text-subtle);margin-bottom:.75rem}.footer-link{color:var(--text-muted);text-decoration:none;font-size:.9rem;padding:4px 0;display:inline-block;transition:color .15s ease}.footer-link:hover{color:var(--accent)}.shortcut-list{display:flex;flex-direction:column;gap:.6rem;font-size:.85rem;color:var(--text-muted)}.shortcut-list kbd{font-family:var(--font-mono);font-size:.75rem;background:var(--bg-surface);border:1px solid var(--border-color);padding:2px 6px;border-radius:4px;color:var(--text-main)}.footer-bottom{max-width:1440px;width:min(94%,1440px);margin:1.5rem auto 0;text-align:center;color:var(--text-subtle);font-size:.85rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.65rem 1.25rem;min-height:42px;border-radius:var(--radius-md);font-weight:600;font-size:.9rem;cursor:pointer;text-decoration:none;transition:all .15s ease;border:1px solid transparent;touch-action:manipulation}.btn.primary{background:var(--accent);color:#090d16;font-weight:700}.btn.primary:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px);box-shadow:0 4px 12px #38bdf859}.btn.secondary{background:var(--bg-surface);border-color:var(--border-color);color:var(--text-main)}.btn.secondary:hover{background:var(--bg-elevated);border-color:var(--border-hover)}.alert{padding:.85rem 1.25rem;border-radius:var(--radius-md);font-size:.9rem;margin-bottom:1.5rem;word-break:break-word}.alert.error{background:var(--error-light);border:1px solid rgba(239,68,68,.3);color:#fca5a5}.alert.success{background:var(--success-light);border:1px 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