:root{--bg:#f8fafc;--surface:#ffffff;--surface-card:#ffffff;--border:#e2e8f0;--text:#0f172a;--text-muted:#64748b;--primary:#2563eb;--primary-hover:#1d4ed8;--primary-light:#eff6ff;--accent:#059669;--danger:#dc2626;--warning:#d97706;--radius:10px;--shadow:0 4px 6px -1px rgba(0,0,0,0.07),0 2px 4px -2px rgba(0,0,0,0.05);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -4px rgba(0,0,0,0.07);--font-sans:'Inter',sans-serif;--font-heading:'Outfit',sans-serif}[data-theme="dark"]{--bg:#0b0f19;--surface:#111827;--surface-card:#1e293b;--border:#334155;--text:#f1f5f9;--text-muted:#94a3b8;--primary:#3b82f6;--primary-hover:#60a5fa;--primary-light:rgba(59,130,246,0.15);--accent:#10b981;--danger:#ef4444;--warning:#f59e0b;--shadow:0 4px 6px -1px rgba(0,0,0,0.3);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.4)}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);background-color:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;min-height:100vh;display:flex;flex-direction:column}a{color:inherit;text-decoration:none}button,input,select,textarea{font-family:inherit;font-size:inherit}img{max-width:100%;height:auto}code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace}.container{width:100%;max-width:1280px;margin:0 auto;padding:0 20px}.site-header{position:sticky;top:0;z-index:100;background:var(--surface);border-bottom:1px solid 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24px;font-size:.875rem}.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:32px;margin-bottom:40px}.footer-col h4{font-family:var(--font-heading);font-size:.95rem;margin-bottom:16px;color:var(--text);font-weight:700;letter-spacing:.02em}.footer-links{list-style:none;display:flex;flex-direction:column;gap:8px}.footer-links a{color:var(--text-muted);transition:color .15s}.footer-links a:hover{color:var(--primary)}.footer-bottom{border-top:1px solid var(--border);padding-top:24px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;font-size:.8rem;color:var(--text-muted)}.footer-legal-links{display:flex;flex-wrap:wrap;gap:16px}.trademark-note{font-size:.75rem;color:var(--text-muted);margin-top:12px;line-height:1.4}.cookie-banner{position:fixed;bottom:20px;right:20px;max-width:420px;background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow-lg);padding:18px;z-index:999;display:none;font-size:.85rem;line-height:1.5}.cookie-banner.show{display:block}.cookie-buttons{display:flex;gap:8px;margin-top:12px}.cookie-btn{padding:6px 14px;border-radius:6px;font-size:.8rem;font-weight:600;cursor:pointer;border:none}.cookie-accept{background:var(--primary);color:#fff}.cookie-dismiss{background:var(--border);color:var(--text)}.toast-msg{position:fixed;top:20px;right:20px;background:#0f172a;color:#fff;padding:12px 20px;border-radius:8px;box-shadow:var(--shadow-lg);font-size:.875rem;z-index:10000;opacity:0;pointer-events:none;transition:opacity .2s;display:flex;align-items:center;gap:8px}.toast-msg.show{opacity:1}@media (max-width:992px){.dropdown-mega,.dropdown-mega-3{min-width:auto;grid-template-columns:1fr;position:static;box-shadow:none;border:none;padding:8px 0}.nav-menu{display:none;position:absolute;top:100%;left:0;width:100%;background:var(--surface);border-bottom:1px solid var(--border);flex-direction:column;align-items:flex-start;padding:16px 20px;gap:8px;max-height:80vh;overflow-y:auto}.nav-menu.open{display:flex}.nav-item{width:100%}.nav-dropdown{position:static;display:none;width:100%;border:none;box-shadow:none;padding:8px 12px}.nav-item.open .nav-dropdown{display:block}.mobile-menu-btn{display:block}.editor-grid{grid-template-columns:1fr}.editor-panel{border-right:none;border-bottom:1px solid var(--border)}}@media (max-width:640px){.hero-title{font-size:1.85rem}.converter-toolbar{flex-direction:column;align-items:stretch}.toolbar-group{justify-content:space-between}.settings-bar{flex-direction:column;align-items:flex-start}.footer-bottom{flex-direction:column;align-items:flex-start;text-align:left}.cookie-banner{left:16px;right:16px;bottom:16px}}