:root{--color-bg-primary: #0f0f1a;--color-bg-secondary: #1a1a2e;--color-bg-tertiary: #16213e;--color-bg-card: rgba(255, 255, 255, .05);--color-bg-card-hover: rgba(255, 255, 255, .08);--color-text-primary: #ffffff;--color-text-secondary: rgba(255, 255, 255, .7);--color-text-muted: rgba(255, 255, 255, .5);--color-accent-1: #667eea;--color-accent-2: #764ba2;--color-accent-gradient: linear-gradient(135deg, var(--color-accent-1) 0%, var(--color-accent-2) 100%);--color-success: #10b981;--color-error: #ef4444;--color-warning: #f59e0b;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, 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;--spacing-1: .25rem;--spacing-2: .5rem;--spacing-3: .75rem;--spacing-4: 1rem;--spacing-5: 1.25rem;--spacing-6: 1.5rem;--spacing-8: 2rem;--spacing-10: 2.5rem;--spacing-12: 3rem;--spacing-16: 4rem;--spacing-20: 5rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .2);--shadow-md: 0 4px 6px rgba(0, 0, 0, .3);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .4);--shadow-xl: 0 20px 50px rgba(0, 0, 0, .5);--shadow-glow: 0 0 40px rgba(102, 126, 234, .3);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .35s ease;--container-max: 1200px;--container-narrow: 720px}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:1.6;color:var(--color-text-primary);background:linear-gradient(135deg,var(--color-bg-primary) 0%,var(--color-bg-secondary) 50%,var(--color-bg-tertiary) 100%);background-attachment:fixed;min-height:100vh}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto}button,input,textarea{font-family:inherit;font-size:inherit}.container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 var(--spacing-4)}.container-narrow{max-width:var(--container-narrow)}.nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:var(--spacing-4) 0;background:#0f0f1acc;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.05)}.nav-container{display:flex;align-items:center;justify-content:space-between}.nav-logo{font-size:var(--font-size-xl);font-weight:700;background:var(--color-accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-links{display:flex;align-items:center;gap:var(--spacing-6);list-style:none}.nav-links a{color:var(--color-text-secondary);font-weight:500;transition:color var(--transition-fast)}.nav-links a:hover{color:var(--color-text-primary)}.nav-cta{padding:var(--spacing-2) var(--spacing-5);background:var(--color-accent-gradient);border-radius:var(--radius-full);color:#fff!important;font-weight:600;transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.nav-cta:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow)}.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:var(--spacing-2)}.nav-toggle span{width:24px;height:2px;background:var(--color-text-primary);transition:var(--transition-fast)}@media (max-width: 768px){.nav-toggle{display:flex}.nav-links{position:absolute;top:100%;left:0;right:0;flex-direction:column;background:#0f0f1af2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);padding:var(--spacing-4);gap:var(--spacing-4);border-bottom:1px solid rgba(255,255,255,.05);display:none}.nav-links.active{display:flex}}.hero{min-height:100vh;display:flex;align-items:center;padding:var(--spacing-20) 0;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 30%,rgba(102,126,234,.15) 0%,transparent 50%),radial-gradient(circle at 70% 70%,rgba(118,75,162,.1) 0%,transparent 50%);animation:pulse 15s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.1);opacity:.8}}.hero-content{position:relative;z-index:1;text-align:center;max-width:800px;margin:0 auto}.hero-badge{display:inline-flex;align-items:center;gap:var(--spacing-2);padding:var(--spacing-2) var(--spacing-4);background:var(--color-bg-card);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-full);font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-bottom:var(--spacing-6)}.hero-badge-dot{width:8px;height:8px;background:var(--color-success);border-radius:50%;animation:blink 2s infinite}@keyframes blink{0%,to{opacity:1}50%{opacity:.5}}.hero-title{font-size:clamp(var(--font-size-3xl),8vw,var(--font-size-5xl));font-weight:800;line-height:1.1;margin-bottom:var(--spacing-6)}.hero-title-accent{background:var(--color-accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-subtitle{font-size:var(--font-size-lg);color:var(--color-text-secondary);max-width:600px;margin:0 auto var(--spacing-10)}.shortlink-form{background:var(--color-bg-card);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-2xl);padding:var(--spacing-6);max-width:600px;margin:0 auto}.form-group{margin-bottom:var(--spacing-4)}.form-label{display:block;font-size:var(--font-size-sm);font-weight:500;color:var(--color-text-secondary);margin-bottom:var(--spacing-2)}.form-input{width:100%;padding:var(--spacing-4);background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);color:var(--color-text-primary);font-size:var(--font-size-base);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.form-input:focus{outline:none;border-color:var(--color-accent-1);box-shadow:0 0 0 3px #667eea33}.form-input::placeholder{color:var(--color-text-muted)}.form-row{display:flex;gap:var(--spacing-4)}.form-row .form-group{flex:1}.form-hint{font-size:var(--font-size-xs);color:var(--color-text-muted);margin-top:var(--spacing-1)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-2);padding:var(--spacing-4) var(--spacing-6);font-size:var(--font-size-base);font-weight:600;border:none;border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-fast)}.btn-primary{width:100%;background:var(--color-accent-gradient);color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-glow)}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-secondary{background:var(--color-bg-card);border:1px solid rgba(255,255,255,.1);color:var(--color-text-primary)}.btn-secondary:hover{background:var(--color-bg-card-hover)}.result{margin-top:var(--spacing-6);padding:var(--spacing-4);background:#10b9811a;border:1px solid rgba(16,185,129,.3);border-radius:var(--radius-lg);display:none}.result.show{display:block;animation:slideUp .3s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.result-label{font-size:var(--font-size-sm);color:var(--color-success);margin-bottom:var(--spacing-2)}.result-url{display:flex;align-items:center;gap:var(--spacing-3)}.result-url input{flex:1;padding:var(--spacing-3);background:#ffffff1a;border:none;border-radius:var(--radius-md);color:var(--color-text-primary);font-family:monospace}.result-url button{padding:var(--spacing-3) var(--spacing-4);background:var(--color-success);border:none;border-radius:var(--radius-md);color:#fff;font-weight:600;cursor:pointer;transition:background var(--transition-fast)}.result-url button:hover{background:#059669}.error{margin-top:var(--spacing-4);padding:var(--spacing-3);background:#ef44441a;border:1px solid rgba(239,68,68,.3);border-radius:var(--radius-md);color:var(--color-error);font-size:var(--font-size-sm);display:none}.error.show{display:block}.features{padding:var(--spacing-20) 0}.section-header{text-align:center;margin-bottom:var(--spacing-12)}.section-tag{display:inline-block;padding:var(--spacing-1) var(--spacing-3);background:#667eea26;border-radius:var(--radius-full);font-size:var(--font-size-sm);font-weight:600;color:var(--color-accent-1);margin-bottom:var(--spacing-4)}.section-title{font-size:var(--font-size-3xl);font-weight:800;margin-bottom:var(--spacing-4)}.section-subtitle{font-size:var(--font-size-lg);color:var(--color-text-secondary);max-width:600px;margin:0 auto}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-6)}.feature-card{padding:var(--spacing-8);background:var(--color-bg-card);border:1px solid rgba(255,255,255,.05);border-radius:var(--radius-xl);transition:all var(--transition-normal)}.feature-card:hover{background:var(--color-bg-card-hover);transform:translateY(-4px);box-shadow:var(--shadow-lg)}.feature-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--color-accent-gradient);border-radius:var(--radius-lg);font-size:1.5rem;margin-bottom:var(--spacing-4)}.feature-title{font-size:var(--font-size-xl);font-weight:700;margin-bottom:var(--spacing-2)}.feature-desc{color:var(--color-text-secondary);line-height:1.6}.stats{padding:var(--spacing-16) 0;background:var(--color-bg-card);border-top:1px solid rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.05)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-8);text-align:center}.stat-item{padding:var(--spacing-4)}.stat-value{font-size:var(--font-size-4xl);font-weight:800;background:var(--color-accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--spacing-2)}.stat-label{color:var(--color-text-secondary);font-size:var(--font-size-sm)}.footer{padding:var(--spacing-12) 0;border-top:1px solid rgba(255,255,255,.05)}.footer-content{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:var(--spacing-6)}.footer-logo{font-size:var(--font-size-lg);font-weight:700;background:var(--color-accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.footer-links{display:flex;gap:var(--spacing-6);list-style:none}.footer-links a{color:var(--color-text-secondary);font-size:var(--font-size-sm);transition:color var(--transition-fast)}.footer-links a:hover{color:var(--color-text-primary)}.footer-copy{width:100%;text-align:center;margin-top:var(--spacing-8);padding-top:var(--spacing-6);border-top:1px solid rgba(255,255,255,.05);color:var(--color-text-muted);font-size:var(--font-size-sm)}.page-header{padding:calc(var(--spacing-20) + 60px) 0 var(--spacing-12);text-align:center}.page-title{font-size:var(--font-size-4xl);font-weight:800;margin-bottom:var(--spacing-4)}.page-subtitle{font-size:var(--font-size-lg);color:var(--color-text-secondary);max-width:600px;margin:0 auto}.content{padding:var(--spacing-12) 0 var(--spacing-20)}.content-card{background:var(--color-bg-card);border:1px solid rgba(255,255,255,.05);border-radius:var(--radius-xl);padding:var(--spacing-8)}.content h2{font-size:var(--font-size-2xl);font-weight:700;margin:var(--spacing-8) 0 var(--spacing-4)}.content h2:first-child{margin-top:0}.content p{color:var(--color-text-secondary);margin-bottom:var(--spacing-4);line-height:1.8}.content ul,.content ol{margin:var(--spacing-4) 0;padding-left:var(--spacing-6);color:var(--color-text-secondary)}.content li{margin-bottom:var(--spacing-2);line-height:1.8}.content code{background:#667eea26;padding:.2em .4em;border-radius:var(--radius-sm);font-family:Fira Code,monospace;font-size:.9em;color:var(--color-accent-1)}.cf-turnstile{margin:var(--spacing-4) 0}.spinner{width:20px;height:20px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.text-center{text-align:center}.text-gradient{background:var(--color-accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.mt-4{margin-top:var(--spacing-4)}.mt-8{margin-top:var(--spacing-8)}.mb-4{margin-bottom:var(--spacing-4)}.mb-8{margin-bottom:var(--spacing-8)}.main-card{background:var(--color-bg-card);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-2xl);overflow:hidden;max-width:900px;margin:0 auto}.tabs-nav{display:flex;gap:var(--spacing-2);padding:var(--spacing-3);background:#ffffff08;border-bottom:1px solid rgba(255,255,255,.1)}.tab-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:var(--spacing-2);padding:var(--spacing-3) var(--spacing-5);background:transparent;border:none;border-radius:var(--radius-lg);color:var(--color-text-secondary);font-size:var(--font-size-base);font-weight:600;cursor:pointer;transition:all var(--transition-fast)}.tab-btn svg{transition:transform var(--transition-fast)}.tab-btn:hover{color:var(--color-text-primary);background:#ffffff0d}.tab-btn.active{background:var(--color-accent-gradient);color:#fff}.tab-btn.active svg{transform:scale(1.1)}.tabs-content{padding:var(--spacing-6)}.tab-pane{display:none;animation:fadeIn .3s ease}.tab-pane.active{display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.qr-container{display:grid;grid-template-columns:1fr;gap:var(--spacing-6)}@media (min-width: 768px){.qr-container{grid-template-columns:1fr 1fr}}.qr-form{display:flex;flex-direction:column}.form-checkbox{display:flex;align-items:center;gap:var(--spacing-2);cursor:pointer;-webkit-user-select:none;user-select:none}.form-checkbox input[type=checkbox]{width:18px;height:18px;cursor:pointer;accent-color:var(--color-accent-1)}.form-checkbox span{color:var(--color-text-secondary);font-size:var(--font-size-sm)}.qr-preview{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-6);background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);text-align:center}.qr-preview-title{font-size:var(--font-size-base);font-weight:600;color:var(--color-text-primary);margin-bottom:var(--spacing-4)}#qr-canvas-container{background:#fff;padding:var(--spacing-4);border-radius:var(--radius-md);margin-bottom:var(--spacing-4);width:fit-content;max-width:100%}#qr-canvas-container canvas{display:block!important;max-width:100%;height:auto!important;aspect-ratio:1 / 1}.qr-actions{display:flex;flex-direction:column;gap:var(--spacing-3);width:100%}.qr-actions .btn{width:100%}@media (max-width: 768px){.tabs-nav{gap:var(--spacing-1);padding:var(--spacing-2)}.tab-btn{padding:var(--spacing-2) var(--spacing-3);font-size:var(--font-size-sm)}.tab-btn svg{width:16px;height:16px}.tabs-content{padding:var(--spacing-4)}.qr-container{grid-template-columns:1fr}.qr-preview{order:2}}