.lang-switcher{background:var(--surface);border:1px solid var(--border);border-radius:8px;gap:4px;padding:3px;display:flex}.lang-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:6px;align-items:center;gap:4px;padding:4px 8px;font-size:.8rem;font-weight:600;transition:all .2s;display:flex}.lang-btn:hover{color:var(--text);background:#ffffff0d}.lang-btn.active{color:var(--primary);background:#6366f11a}.lang-flag{font-size:.9rem}.lang-label{font-size:.75rem}:root{--bg:#0a0a0a;--surface:#141414;--border:#222;--text:#e0e0e0;--text-muted:#888;--primary:#6366f1;--primary-hover:#818cf8;--gradient-start:#6366f1;--gradient-end:#06b6d4}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.6}.page{max-width:1100px;margin:0 auto;padding:0 24px}.nav{justify-content:space-between;align-items:center;padding:24px 0;display:flex}.nav-brand{letter-spacing:-.02em;font-size:1.5rem;font-weight:700}.nav-right{align-items:center;gap:24px;display:flex}.nav-links{gap:24px;display:flex}.nav-links a{color:var(--text-muted);font-size:.9rem;text-decoration:none;transition:color .2s}.nav-links a:hover{color:var(--text)}.hero{text-align:center;padding:100px 0 60px}.hero h1{letter-spacing:-.03em;margin-bottom:24px;font-size:clamp(2.5rem,6vw,4rem);font-weight:800;line-height:1.1}.gradient-text{background:linear-gradient(135deg, var(--gradient-start), var(--gradient-end));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.hero-subtitle{color:var(--text-muted);max-width:560px;margin:0 auto 40px;font-size:1.2rem}.hero-actions{justify-content:center;gap:16px;display:flex}.btn{cursor:pointer;border:none;border-radius:8px;padding:12px 28px;font-size:1rem;font-weight:600;text-decoration:none;transition:all .2s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px)}.btn-secondary{color:var(--text);border:1px solid var(--border);background:0 0}.btn-secondary:hover{border-color:var(--text-muted)}.btn-lg{padding:16px 36px;font-size:1.1rem}.tools-hero{padding:80px 0}.tools-hero-content{background:linear-gradient(135deg,#6366f114,#06b6d40f);border:1px solid #6366f133;border-radius:24px;grid-template-columns:1fr 1fr;align-items:center;gap:64px;padding:64px;display:grid}.tools-hero-text{flex-direction:column;gap:16px;display:flex}.tools-badge{width:fit-content;color:var(--primary-hover);letter-spacing:.02em;background:#6366f126;border-radius:20px;padding:6px 14px;font-size:.85rem;font-weight:700;display:inline-block}.tools-hero-text h2{letter-spacing:-.02em;font-size:clamp(1.8rem,4vw,2.5rem);font-weight:800;line-height:1.15}.tools-hero-text p{color:var(--text-muted);font-size:1.05rem;line-height:1.6}.tools-hero-visual{justify-content:center;display:flex}.qr-demo-card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:32px;box-shadow:0 24px 48px #0000004d}.qr-demo-grid{grid-template-columns:repeat(7,1fr);gap:4px;width:180px;height:180px;display:grid}.qr-cell{background:#ffffff0f;border-radius:2px;transition:background .3s}.qr-cell.filled{background:linear-gradient(135deg, var(--gradient-start), var(--gradient-end))}.features{padding:80px 0}.features h2{text-align:center;margin-bottom:48px;font-size:2rem;font-weight:700}.features-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;display:grid}.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:32px;transition:border-color .2s}.feature-card:hover{border-color:var(--primary)}.feature-icon{margin-bottom:16px;font-size:2rem}.feature-card h3{margin-bottom:8px;font-size:1.2rem}.feature-card p{color:var(--text-muted);font-size:.95rem}.about{text-align:center;padding:80px 0}.about h2{margin-bottom:24px;font-size:2rem;font-weight:700}.about p{color:var(--text-muted);max-width:640px;margin:0 auto;font-size:1.05rem}.contact{text-align:center;padding:80px 0}.contact h2{margin-bottom:24px;font-size:2rem;font-weight:700}.contact-form{justify-content:center;gap:12px;max-width:440px;margin:0 auto;display:flex}.contact-form input{border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:8px;outline:none;flex:1;padding:12px 16px;font-size:1rem}.contact-form input:focus{border-color:var(--primary)}.success-msg{color:var(--gradient-end);font-size:1.1rem}.footer{text-align:center;border-top:1px solid var(--border);margin-top:40px;padding:48px 0}.footer p{color:var(--text-muted);font-size:.85rem}@media (width<=768px){.tools-hero-content{text-align:center;grid-template-columns:1fr;gap:40px;padding:40px 32px}.tools-hero-text{align-items:center}.tools-hero-visual{order:-1}}@media (width<=640px){.hero-actions{flex-direction:column;align-items:center}.contact-form{flex-direction:column}.nav-links{display:none}.tools-hero-content{padding:32px 24px}}.qr-page{flex-direction:column;max-width:900px;min-height:100vh;margin:0 auto;padding:0 24px;display:flex}.qr-container{flex:1;padding:60px 0 40px}.qr-container h1{letter-spacing:-.03em;text-align:center;margin-bottom:12px;font-size:clamp(2rem,5vw,3rem);font-weight:800}.qr-subtitle{text-align:center;color:var(--text-muted);margin-bottom:48px;font-size:1.1rem}.qr-layout{grid-template-columns:1fr 1fr;align-items:start;gap:48px;display:grid}.qr-controls{flex-direction:column;gap:24px;display:flex}.qr-label{color:var(--text-muted);flex-direction:column;gap:8px;font-size:.9rem;font-weight:600;display:flex}.qr-input{border:1px solid var(--border);background:var(--surface);color:var(--text);resize:vertical;border-radius:8px;outline:none;padding:12px 16px;font-family:inherit;font-size:1rem;transition:border-color .2s}.qr-input:focus{border-color:var(--primary)}.qr-range{appearance:none;background:var(--border);border-radius:3px;outline:none;width:100%;height:6px}.qr-range::-webkit-slider-thumb{appearance:none;background:var(--primary);cursor:pointer;border-radius:50%;width:18px;height:18px;transition:background .2s}.qr-range::-webkit-slider-thumb:hover{background:var(--primary-hover)}.qr-ec-group{gap:8px;display:flex}.qr-ec-btn{border:1px solid var(--border);background:var(--surface);color:var(--text-muted);cursor:pointer;border-radius:6px;flex:1;padding:8px;font-size:.9rem;font-weight:600;transition:all .2s}.qr-ec-btn:hover{border-color:var(--text-muted)}.qr-ec-btn.active{border-color:var(--primary);color:var(--primary);background:#6366f11a}.qr-color-row{gap:16px;display:flex}.qr-color-label{flex:1}.qr-color-picker{align-items:center;gap:10px;display:flex}.qr-color-picker input[type=color]{appearance:none;border:1px solid var(--border);cursor:pointer;background:0 0;border-radius:6px;width:36px;height:36px;padding:2px}.qr-color-picker input[type=color]::-webkit-color-swatch-wrapper{padding:0}.qr-color-picker input[type=color]::-webkit-color-swatch{border:none;border-radius:4px}.qr-color-picker span{color:var(--text-muted);font-family:monospace;font-size:.85rem}.qr-preview{flex-direction:column;align-items:center;gap:24px;display:flex}.qr-image-wrapper{background:var(--surface);border:1px solid var(--border);border-radius:16px;justify-content:center;align-items:center;padding:24px;display:flex}.qr-image-wrapper img{border-radius:8px;max-width:100%;height:auto}.qr-download-row{gap:12px;display:flex}.qr-placeholder{background:var(--surface);border:2px dashed var(--border);text-align:center;border-radius:16px;width:100%;padding:80px 40px}.qr-placeholder span{margin-bottom:16px;font-size:3rem;display:block}.qr-placeholder p{color:var(--text-muted);font-size:1rem}@media (width<=700px){.qr-layout{grid-template-columns:1fr}.qr-color-row{flex-direction:column}}.qr-logo-row{align-items:center;gap:12px;display:flex}.qr-logo-btn{padding:8px 16px;font-size:.9rem}.qr-logo-preview{align-items:center;gap:12px;display:flex}.qr-logo-thumb{object-fit:cover;border:1px solid var(--border);border-radius:6px;width:40px;height:40px}.qr-logo-remove{border:1px solid var(--border);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:6px;padding:4px 12px;font-size:.8rem;transition:all .2s}.qr-logo-remove:hover{color:#ef4444;border-color:#ef4444}