:root{--bg-primary:#06090f;--bg-secondary:#0c1220;--bg-tertiary:#111827;--bg-card:#0f172a99;--bg-card-hover:#141e37bf;--bg-glass:#0f172a73;--bg-glass-border:#38bdf81f;--text-primary:#f0f6ff;--text-secondary:#94a3b8;--text-muted:#64748b;--text-accent:#38bdf8;--accent-cyan:#00d4ff;--accent-blue:#3b82f6;--accent-purple:#7b2fff;--accent-pink:#ec4899;--accent-green:#10b981;--accent-orange:#f59e0b;--gradient-main:linear-gradient(135deg, #00d4ff 0%, #7b2fff 100%);--gradient-subtle:linear-gradient(135deg, #00d4ff26 0%, #7b2fff26 100%);--gradient-glow:linear-gradient(135deg, #00d4ff4d 0%, #7b2fff4d 100%);--gradient-card:linear-gradient(145deg, #0f172acc 0%, #0f172a66 100%);--glow-cyan:0 0 20px #00d4ff4d, 0 0 60px #00d4ff1a;--glow-purple:0 0 20px #7b2fff4d, 0 0 60px #7b2fff1a;--glow-btn:0 4px 30px #00d4ff40, 0 0 60px #00d4ff14;--shadow-sm:0 1px 3px #0000004d;--shadow-md:0 4px 20px #0006;--shadow-lg:0 10px 40px #00000080;--shadow-xl:0 20px 60px #0009;--space-xs:.25rem;--space-sm:.5rem;--space-md:1rem;--space-lg:1.5rem;--space-xl:2rem;--space-2xl:3rem;--space-3xl:4rem;--space-4xl:6rem;--font-family:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs:.75rem;--font-size-sm:.875rem;--font-size-base:1rem;--font-size-lg:1.125rem;--font-size-xl:1.25rem;--font-size-2xl:1.5rem;--font-size-3xl:2rem;--font-size-4xl:2.5rem;--font-size-5xl:3.5rem;--font-size-6xl:4.5rem;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--ease-out:cubic-bezier(.16, 1, .3, 1);--ease-in-out:cubic-bezier(.65, 0, .35, 1);--transition-fast:.15s var(--ease-out);--transition-base:.25s var(--ease-out);--transition-slow:.4s var(--ease-out);--max-width:1200px;--nav-height:72px}[data-theme=light]{--bg-primary:#f8fafc;--bg-secondary:#f1f5f9;--bg-tertiary:#e2e8f0;--bg-card:#ffffffb3;--bg-card-hover:#ffffffe6;--bg-glass:#fff9;--bg-glass-border:#3b82f633;--text-primary:#0f172a;--text-secondary:#475569;--text-muted:#94a3b8;--shadow-sm:0 1px 3px #00000014;--shadow-md:0 4px 20px #00000014;--shadow-lg:0 10px 40px #0000001a;--shadow-xl:0 20px 60px #0000001f;--gradient-card:linear-gradient(145deg, #ffffffe6 0%, #ffffff80 100%);--glow-btn:0 4px 30px #3b82f633}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;font-size:16px}body{font-family:var(--font-family);background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.6;overflow-x:hidden}a{color:inherit;text-decoration:none}button{cursor:pointer;color:inherit;background:0 0;border:none;font-family:inherit}input,select,textarea{color:inherit;font-family:inherit}.bg-animation{z-index:0;pointer-events:none;width:100%;height:100%;position:fixed;top:0;left:0;overflow:hidden}.grid-overlay{background-image:linear-gradient(#38bdf808 1px,#0000 1px),linear-gradient(90deg,#38bdf808 1px,#0000 1px);background-size:60px 60px;width:100%;height:100%;position:absolute;top:0;left:0;mask-image:radial-gradient(80% 50% at 50% 0,#000 40%,#0000 100%)}[data-theme=light] .grid-overlay{background-image:linear-gradient(#3b82f60f 1px,#0000 1px),linear-gradient(90deg,#3b82f60f 1px,#0000 1px)}.glow-orb{filter:blur(100px);opacity:.4;border-radius:50%;position:absolute}.glow-orb-1{background:radial-gradient(circle,#00d4ff26,#0000 70%);width:600px;height:600px;animation:15s ease-in-out infinite orbFloat1;top:-200px;right:-100px}.glow-orb-2{background:radial-gradient(circle,#7b2fff1f,#0000 70%);width:500px;height:500px;animation:18s ease-in-out infinite orbFloat2;bottom:20%;left:-150px}.glow-orb-3{background:radial-gradient(circle,#ec489914,#0000 70%);width:400px;height:400px;animation:20s ease-in-out infinite orbFloat3;top:50%;right:10%}[data-theme=light] .glow-orb{opacity:.25}@keyframes orbFloat1{0%,to{transform:translate(0)scale(1)}33%{transform:translate(40px,60px)scale(1.1)}66%{transform:translate(-30px,30px)scale(.95)}}@keyframes orbFloat2{0%,to{transform:translate(0)scale(1)}33%{transform:translate(50px,-40px)scale(1.05)}66%{transform:translate(-20px,-60px)scale(.9)}}@keyframes orbFloat3{0%,to{transform:translate(0)scale(1)}50%{transform:translate(-60px,40px)scale(1.15)}}.navbar{height:var(--nav-height);z-index:1000;transition:background var(--transition-base), box-shadow var(--transition-base), backdrop-filter var(--transition-base);position:fixed;top:0;left:0;right:0}.navbar.scrolled{-webkit-backdrop-filter:blur(20px)saturate(180%);box-shadow:0 1px 0 #38bdf814, var(--shadow-md);background:#06090fd9}[data-theme=light] 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var(--transition-base);border-radius:2px;position:absolute;bottom:-4px;left:0}.nav-link:hover{color:var(--text-primary)}.nav-link:hover:after{width:100%}.mobile-nav-toggle{border-radius:var(--radius-sm);border:1px solid var(--bg-glass-border);background:var(--bg-glass);width:40px;height:40px;color:var(--text-secondary);transition:all var(--transition-fast);justify-content:center;align-items:center;display:none}.mobile-nav-toggle:hover{color:var(--text-primary);background:var(--bg-card-hover)}.nav-right-controls{align-items:center;gap:var(--space-sm);display:flex}.theme-toggle{border-radius:var(--radius-full);background:var(--bg-glass);border:1px solid var(--bg-glass-border);width:40px;height:40px;transition:all var(--transition-fast);justify-content:center;align-items:center;display:flex}.theme-toggle:hover{background:var(--bg-card-hover);transform:rotate(15deg)}.theme-icon{width:18px;height:18px;color:var(--text-secondary)}.theme-icon.moon,[data-theme=light] .theme-icon.sun{display:none}[data-theme=light] .theme-icon.moon{display:block}.lang-selector-wrapper{align-items:center;display:inline-flex;position:relative}.lang-select-dropdown{appearance:none;background:var(--bg-glass);border:1px solid var(--bg-glass-border);color:var(--text-secondary);border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);text-transform:uppercase;letter-spacing:.05em;outline:none;padding:8px 32px 8px 16px;font-size:.8rem;font-weight:600}.lang-select-dropdown:hover{color:var(--text-primary);border-color:var(--accent-cyan);background:var(--bg-card-hover);box-shadow:0 0 12px #00d4ff26}.lang-select-dropdown option{background:var(--bg-secondary);color:var(--text-primary);padding:8px;font-weight:500}.lang-selector-wrapper:after{content:"";border-right:1.5px solid var(--text-secondary);border-bottom:1.5px solid var(--text-secondary);pointer-events:none;width:6px;height:6px;transition:border-color var(--transition-fast);position:absolute;top:50%;right:14px;transform:translateY(-60%)rotate(45deg)}.lang-selector-wrapper:hover:after{border-color:var(--accent-cyan)}[data-theme=light] .lang-select-dropdown{color:var(--text-secondary);background:#ffffffb3;border-color:#0000001a}[data-theme=light] .lang-select-dropdown:hover{border-color:var(--accent-blue);color:var(--text-primary);background:#fffffff2}[data-theme=light] .lang-select-dropdown option{color:var(--text-primary);background:#fff}[data-theme=light] .lang-selector-wrapper:after{border-color:var(--text-secondary)}[data-theme=light] .lang-selector-wrapper:hover:after{border-color:var(--accent-blue)}.gradient-text{background:var(--gradient-main);-webkit-text-fill-color:transparent;background-clip:text}.glass-card{background:var(--gradient-card);-webkit-backdrop-filter:blur(16px)saturate(180%);border:1px solid var(--bg-glass-border);border-radius:var(--radius-lg);transition:all var(--transition-base)}.glass-card:hover{box-shadow:var(--shadow-lg);border-color:#38bdf833}.btn{justify-content:center;align-items:center;gap:var(--space-sm);font-weight:600;font-size:var(--font-size-sm);border-radius:var(--radius-md);transition:all var(--transition-fast);white-space:nowrap;padding:10px 20px;display:inline-flex;position:relative;overflow:hidden}.btn-lg{font-size:var(--font-size-base);border-radius:var(--radius-md);padding:14px 28px}.btn-primary{background:var(--gradient-main);color:#fff;box-shadow:var(--glow-btn)}.btn-primary:before{content:"";opacity:0;transition:opacity var(--transition-fast);background:linear-gradient(135deg,#fff3 0%,#0000 50%);position:absolute;inset:0}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 40px #00d4ff59,0 0 80px #00d4ff1f}.btn-primary:hover:before{opacity:1}.btn-primary:active{transform:translateY(0)}.btn-ghost{color:var(--text-secondary);border:1px solid 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var(--transition-base)}.result-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}.result-icon{width:44px;height:44px;margin:0 auto var(--space-sm);border-radius:var(--radius-md);background:var(--gradient-subtle);justify-content:center;align-items:center;display:flex}.result-icon svg{width:22px;height:22px;color:var(--accent-cyan)}.result-icon.savings svg{color:var(--accent-green)}.result-icon.savings{background:#10b9811a}.result-icon.download svg{color:var(--accent-blue)}.result-icon.download{background:#3b82f61a}.result-icon.quality 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