:root{--bg-base: #191816;--bg-surface: #22201e;--bg-elevated: #2c2927;--bg-glass: #22201e;--bg-glass-hover: #2c2927;--bg-glass-border: #3c3835;--gradient-primary: linear-gradient(to right, #D97752 33.3%, #E0B880 33.3% 66.6%, #F9F6F0 66.6%);--gradient-accent: linear-gradient(135deg, #D97752 0%, #E0B880 100%);--gradient-glow: none;--gradient-text: linear-gradient(135deg, #F9F6F0 0%, #c7c1ba 100%);--text-primary: #F9F6F0;--text-secondary: #c7c1ba;--text-tertiary: #7c756e;--text-accent: #E0B880;--color-success: #0fa336;--color-success-bg: rgba(15, 163, 54, .1);--color-error: #D97752;--color-error-bg: rgba(217, 119, 82, .1);--color-warning: #E0B880;--color-warning-bg: rgba(224, 184, 128, .1);--color-info: #D97752;--color-info-bg: rgba(217, 119, 82, .1);--radius-sm: 0px;--radius-md: 0px;--radius-lg: 0px;--radius-xl: 0px;--radius-full: 9999px;--shadow-sm: none;--shadow-md: none;--shadow-lg: none;--shadow-glow: none;--ease-out: cubic-bezier(.16, 1, .3, 1);--ease-spring: cubic-bezier(.34, 1.56, .64, 1);--duration-fast: .15s;--duration-normal: .25s;--duration-slow: .4s;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--space-16: 64px;--font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;color-scheme:dark}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;scroll-behavior:smooth;color-scheme:dark}body{background-color:var(--bg-base);color:var(--text-primary);min-height:100dvh;overflow-x:hidden;position:relative;font-weight:300}.skip-link{position:absolute;top:-100%;left:var(--space-4);z-index:10000;padding:var(--space-2) var(--space-4);background:var(--gradient-primary);color:#fff;border-radius:var(--radius-sm);font-weight:600;font-size:.875rem;text-decoration:none;transition:top var(--duration-fast) var(--ease-out)}.skip-link:focus{top:var(--space-4);outline:2px solid var(--text-accent);outline-offset:2px}#app{position:relative;z-index:1;max-width:880px;margin:0 auto;padding:var(--space-6) var(--space-4);min-height:100dvh;display:flex;flex-direction:column}.app-header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-4) 0;margin-bottom:var(--space-8);flex-wrap:wrap;gap:var(--space-3)}.app-logo{display:flex;align-items:center;gap:var(--space-3);text-decoration:none}.app-logo-icon{font-size:1.75rem;line-height:1;width:1.75rem;height:1.75rem;object-fit:contain}.app-logo-text{font-size:1.375rem;font-weight:700;letter-spacing:-.02em;background:var(--gradient-text);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.app-badges{display:flex;gap:var(--space-2);flex-wrap:wrap}.badge{display:inline-flex;align-items:center;gap:var(--space-1);padding:var(--space-1) var(--space-3);border-radius:var(--radius-full);font-size:.6875rem;font-weight:600;letter-spacing:.02em;text-transform:uppercase;border:1px solid;white-space:nowrap}.badge--success{color:var(--color-success);background:var(--color-success-bg);border-color:#10b98133}.badge--warning{color:var(--color-warning);background:var(--color-warning-bg);border-color:#f59e0b33}.badge--error{color:var(--color-error);background:var(--color-error-bg);border-color:#ef444433}.badge--info{color:var(--color-info);background:var(--color-info-bg);border-color:#3b82f633}.hero-pane{display:flex;flex-direction:column;align-items:center;text-align:center;padding:var(--space-10) var(--space-6);margin-bottom:var(--space-8);background:var(--bg-glass);border:1px solid var(--bg-glass-border);position:relative}.hero-badge{font-family:var(--font-sans);font-size:.6875rem;font-weight:700;letter-spacing:2px;color:var(--text-accent);background:var(--color-warning-bg);border:1px solid rgba(224,184,128,.15);padding:var(--space-1) var(--space-3);margin-bottom:var(--space-4);text-transform:uppercase}.hero-title{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:800;line-height:1.25;letter-spacing:-.02em;color:var(--text-primary);max-width:800px;margin-bottom:var(--space-4)}.hero-title .text-gradient{background:var(--gradient-accent);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:inline-block}.hero-subtitle{font-size:1rem;color:var(--text-secondary);max-width:640px;margin-bottom:var(--space-8);line-height:1.6}.hero-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--space-4);width:100%;max-width:1000px}.hero-feature-card{display:flex;flex-direction:column;align-items:flex-start;text-align:left;padding:var(--space-4);background:#ffffff04;border:1px solid var(--bg-glass-border);transition:border-color var(--duration-normal) var(--ease-out),background var(--duration-normal) var(--ease-out),transform var(--duration-normal) var(--ease-out)}.hero-feature-card:hover{border-color:var(--text-accent);background:#ffffff08;transform:translateY(-2px)}.hero-feature-icon{font-size:1.375rem;margin-bottom:var(--space-2)}.hero-feature-title{font-size:.875rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--space-1)}.hero-feature-desc{font-size:.78125rem;color:var(--text-secondary);line-height:1.5}@media(max-width:640px){.hero-pane{padding:var(--space-6) var(--space-4)}.hero-features{grid-template-columns:1fr}}.glass-card{background:var(--bg-glass);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--bg-glass-border);border-radius:var(--radius-lg);padding:var(--space-6);transition:border-color var(--duration-normal) var(--ease-out),box-shadow var(--duration-normal) var(--ease-out)}.glass-card:focus-within{border-color:#7c3aed4d;box-shadow:var(--shadow-glow)}.section-label{display:flex;align-items:center;gap:var(--space-2);font-size:.6875rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--text-tertiary);margin-bottom:var(--space-3)}.text-input-wrapper{margin-bottom:var(--space-6)}.text-input{width:100%;min-height:160px;max-height:400px;padding:var(--space-4) var(--space-5);background:var(--bg-surface);border:1px solid var(--bg-glass-border);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font-sans);font-size:.9375rem;line-height:1.7;resize:vertical;transition:border-color var(--duration-fast) var(--ease-out),box-shadow var(--duration-fast) var(--ease-out);touch-action:manipulation}.text-input::placeholder{color:var(--text-tertiary)}.text-input:focus{outline:none;border-color:#7c3aed80;box-shadow:0 0 0 3px #7c3aed1a}.text-input:focus-visible{outline:2px solid var(--text-accent);outline-offset:2px}.char-counter{display:flex;justify-content:flex-end;margin-top:var(--space-2);font-size:.75rem;color:var(--text-tertiary);font-variant-numeric:tabular-nums}.char-counter--warning{color:var(--color-warning)}.char-counter--error{color:var(--color-error)}.controls-row{display:flex;gap:var(--space-4);margin-bottom:var(--space-6);flex-wrap:wrap}.control-group{flex:1;min-width:180px}.control-label{display:block;font-size:.75rem;font-weight:500;color:var(--text-secondary);margin-bottom:var(--space-2)}.select-wrapper{position:relative}.select-input{width:100%;padding:var(--space-3) var(--space-10) var(--space-3) var(--space-4);background-color:var(--bg-surface);color:var(--text-primary);border:1px solid var(--bg-glass-border);border-radius:var(--radius-sm);font-family:var(--font-sans);font-size:.875rem;cursor:pointer;appearance:none;-webkit-appearance:none;transition:border-color var(--duration-fast) var(--ease-out);touch-action:manipulation}.select-input:hover{border-color:#ffffff26}.select-input:focus-visible{outline:2px solid var(--text-accent);outline-offset:2px}.select-arrow{position:absolute;right:var(--space-3);top:50%;transform:translateY(-50%);pointer-events:none;color:var(--text-tertiary);font-size:.75rem}.select-input optgroup{background:var(--bg-elevated);color:var(--text-secondary);font-weight:600}.select-input option{background:var(--bg-surface);color:var(--text-primary);padding:var(--space-2)}.speed-control{display:flex;align-items:center;gap:var(--space-3)}.speed-slider{flex:1;height:4px;-webkit-appearance:none;appearance:none;background:var(--bg-elevated);border-radius:var(--radius-full);outline:none;cursor:pointer}.speed-slider::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--gradient-primary);border:2px solid var(--bg-base);box-shadow:var(--shadow-sm);cursor:pointer;transition:transform var(--duration-fast) var(--ease-spring)}.speed-slider::-webkit-slider-thumb:hover{transform:scale(1.15)}.speed-slider::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--gradient-primary);border:2px solid var(--bg-base);box-shadow:var(--shadow-sm);cursor:pointer}.speed-slider:focus-visible{outline:2px solid var(--text-accent);outline-offset:4px}.speed-value{font-size:.8125rem;font-weight:600;color:var(--text-accent);font-variant-numeric:tabular-nums;min-width:35px;text-align:right}.actions-row{display:flex;gap:var(--space-3);margin-bottom:var(--space-8);flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);border:1px solid transparent;border-radius:var(--radius-sm);font-family:var(--font-sans);font-size:.875rem;font-weight:700;text-transform:uppercase;letter-spacing:1.5px;cursor:pointer;white-space:nowrap;transition:opacity var(--duration-fast) var(--ease-out),background-color var(--duration-fast) var(--ease-out),border-color var(--duration-fast) var(--ease-out),color var(--duration-fast) var(--ease-out);touch-action:manipulation;-webkit-tap-highlight-color:rgba(28,105,212,.15);min-height:48px}.btn:active{transform:none}.btn:focus-visible{outline:2px solid var(--text-accent);outline-offset:2px}.btn--primary{background-color:var(--bg-base);color:var(--text-primary);border-color:var(--text-primary);box-shadow:none}.btn--primary:hover{background-color:var(--text-primary);color:var(--bg-base);box-shadow:none;opacity:1}.btn--primary:disabled{opacity:.4;cursor:not-allowed;background-color:var(--bg-base);color:var(--text-tertiary);border-color:var(--bg-glass-border)}.btn--secondary{background-color:var(--bg-base);color:var(--text-secondary);border-color:var(--bg-glass-border)}.btn--secondary:hover{background-color:var(--bg-surface);border-color:var(--text-primary)}.btn--secondary:disabled{opacity:.4;cursor:not-allowed;border-color:var(--bg-glass-border);color:var(--text-tertiary)}.btn--danger{background-color:var(--bg-base);color:var(--color-error);border-color:var(--color-error)}.btn--danger:hover{background-color:var(--color-error);color:var(--bg-base)}.btn-spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.25);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite}.progress-section{margin-bottom:var(--space-6)}.progress-bar-wrapper{width:100%;height:6px;background:var(--bg-elevated);border-radius:var(--radius-full);overflow:hidden;margin-bottom:var(--space-2)}.progress-bar{height:100%;background:var(--gradient-primary);border-radius:var(--radius-full);transition:width var(--duration-normal) var(--ease-out);min-width:0%}.progress-text{font-size:.75rem;color:var(--text-secondary);text-align:center;font-variant-numeric:tabular-nums}.output-panel{margin-bottom:var(--space-8)}.waveform-container{width:100%;height:120px;background:var(--bg-surface);border-radius:var(--radius-md);overflow:hidden;margin-bottom:var(--space-4);position:relative;border:1px solid var(--bg-glass-border)}.waveform-canvas{width:100%;height:100%;display:block}.waveform-overlay{position:absolute;bottom:0;left:0;right:0;padding:var(--space-2) var(--space-4);display:flex;justify-content:space-between;align-items:center;background:linear-gradient(to top,rgba(7,7,12,.8) 0%,transparent 100%);font-size:.75rem;color:var(--text-secondary);font-variant-numeric:tabular-nums}.playback-controls{display:flex;gap:var(--space-2);align-items:center}.playback-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--bg-glass-border);border-radius:var(--radius-sm);background:var(--bg-glass);color:var(--text-primary);font-size:1rem;cursor:pointer;transition:background-color var(--duration-fast) var(--ease-out),border-color var(--duration-fast) var(--ease-out);touch-action:manipulation;-webkit-tap-highlight-color:rgba(124,58,237,.15)}.playback-btn:hover{background:var(--bg-glass-hover);border-color:#ffffff26}.playback-btn:focus-visible{outline:2px solid var(--text-accent);outline-offset:2px}.playback-btn:disabled{opacity:.3;cursor:not-allowed}.download-row{display:flex;gap:var(--space-3);flex-wrap:wrap}.app-footer{margin-top:auto;padding-top:var(--space-8);padding-bottom:var(--space-4);display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:var(--space-3);border-top:1px solid var(--bg-glass-border)}.footer-status{display:flex;align-items:center;gap:var(--space-4);flex-wrap:wrap}.status-dot{display:inline-flex;align-items:center;gap:var(--space-1);font-size:.75rem;color:var(--text-tertiary)}.status-dot:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--text-tertiary)}.status-dot--active:before{background:var(--color-success);box-shadow:0 0 6px #10b98180}.status-dot--warning:before{background:var(--color-warning)}.status-dot--error:before{background:var(--color-error)}.footer-credit{font-size:.6875rem;color:var(--text-tertiary)}.footer-credit a{color:var(--text-secondary);text-decoration:none;transition:color var(--duration-fast) var(--ease-out)}.footer-credit a:hover{color:var(--text-accent)}.footer-credit a:focus-visible{outline:2px solid var(--text-accent);outline-offset:2px}#toast-container{position:fixed;bottom:var(--space-6);right:var(--space-6);z-index:9999;display:flex;flex-direction:column;gap:var(--space-3);pointer-events:none;max-width:400px}.toast{padding:var(--space-3) var(--space-5);border-radius:var(--radius-md);font-size:.8125rem;font-weight:500;display:flex;align-items:center;gap:var(--space-3);pointer-events:auto;box-shadow:var(--shadow-lg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);animation:toast-in var(--duration-normal) var(--ease-out);border:1px solid}.toast--success{background:#10b9811f;color:#6ee7b7;border-color:#10b98133}.toast--error{background:#ef44441f;color:#fca5a5;border-color:#ef444433}.toast--info{background:#3b82f61f;color:#93c5fd;border-color:#3b82f633}.toast--warning{background:#f59e0b1f;color:#fcd34d;border-color:#f59e0b33}.toast--exit{animation:toast-out var(--duration-normal) var(--ease-out) forwards}.toast-icon{font-size:1rem;flex-shrink:0}.model-load-overlay{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-4);padding:var(--space-12) var(--space-6);text-align:center}.model-load-overlay .loader-ring{width:48px;height:48px;border:3px solid rgba(255,255,255,.08);border-top-color:#7c3aed;border-right-color:#06b6d4;border-radius:50%;animation:spin 1s linear infinite}.model-load-title{font-size:1.125rem;font-weight:600;color:var(--text-primary)}.model-load-subtitle{font-size:.8125rem;color:var(--text-secondary);max-width:400px;line-height:1.5}.faq-section{margin-top:var(--space-8);margin-bottom:var(--space-8)}.faq-title{font-size:1.125rem;font-weight:700;margin-bottom:var(--space-6);color:var(--text-primary);scroll-margin-top:var(--space-8)}.faq-item{border-bottom:1px solid var(--bg-glass-border);padding:var(--space-4) 0}.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;background:none;border:none;color:var(--text-primary);font-family:var(--font-sans);font-size:.9375rem;font-weight:500;cursor:pointer;text-align:left;padding:var(--space-2) 0;min-height:44px;touch-action:manipulation;-webkit-tap-highlight-color:rgba(124,58,237,.15)}.faq-question:hover{color:var(--text-accent)}.faq-question:focus-visible{outline:2px solid var(--text-accent);outline-offset:2px}.faq-chevron{font-size:.75rem;color:var(--text-tertiary);transition:transform var(--duration-normal) var(--ease-out);flex-shrink:0;margin-left:var(--space-4)}.faq-item--open .faq-chevron{transform:rotate(180deg)}.faq-answer{font-size:.875rem;color:var(--text-secondary);line-height:1.6;max-height:0;overflow:hidden;transition:max-height var(--duration-slow) var(--ease-out),padding var(--duration-slow) var(--ease-out);padding:0}.faq-item--open .faq-answer{max-height:300px;padding:var(--space-2) 0 var(--space-4)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.hidden{display:none!important}@keyframes spin{to{transform:rotate(360deg)}}@keyframes toast-in{0%{opacity:0;transform:translate(40px) scale(.95)}to{opacity:1;transform:translate(0) scale(1)}}@keyframes toast-out{0%{opacity:1;transform:translate(0) scale(1)}to{opacity:0;transform:translate(40px) scale(.95)}}@keyframes fade-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse-glow{0%,to{opacity:.6}50%{opacity:1}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.speed-slider::-webkit-slider-thumb:hover{transform:none}.btn:active{transform:none}}.seo-section{margin-top:var(--space-8);margin-bottom:var(--space-8)}.seo-title{font-size:1.25rem;font-weight:700;margin-bottom:var(--space-6);color:var(--text-primary);background:var(--gradient-primary);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;display:inline-block;scroll-margin-top:var(--space-8)}.seo-content-container{display:flex;flex-direction:column;gap:var(--space-4);color:var(--text-secondary);font-size:.9375rem;line-height:1.7}.seo-subtitle{font-size:1.05rem;font-weight:600;color:var(--text-primary);margin-top:var(--space-4);margin-bottom:var(--space-2)}.seo-paragraph{margin-bottom:var(--space-2)}.seo-list{list-style-type:disc;padding-left:var(--space-6);margin-bottom:var(--space-4);display:flex;flex-direction:column;gap:var(--space-2)}.seo-list li{line-height:1.6}.seo-list li strong{color:var(--text-primary)}@media(max-width:640px){#app{padding:var(--space-4) var(--space-3)}.app-header{margin-bottom:var(--space-6)}.glass-card{padding:var(--space-4);border-radius:var(--radius-md)}.text-input{min-height:120px;font-size:1rem}.controls-row{flex-direction:column;gap:var(--space-3)}.control-group{min-width:100%}.actions-row{flex-direction:column}.btn{width:100%}#toast-container{right:var(--space-3);left:var(--space-3);max-width:none}.waveform-container{height:80px}}@media(min-width:641px)and (max-width:1024px){.text-input{font-size:1rem}}.m-stripe-divider{width:100%;height:4px;background:linear-gradient(to right,#d97752 33.3%,#e0b880 33.3% 66.6%,#f9f6f0 66.6%);border:none;margin:0;padding:0}.footer-nav{display:flex;gap:var(--space-4);flex-wrap:wrap;margin-top:var(--space-2)}.footer-link{font-size:.75rem;color:var(--text-tertiary);text-decoration:none;transition:color var(--duration-fast) var(--ease-out);font-family:var(--font-sans);font-weight:700;text-transform:uppercase;letter-spacing:.5px}.footer-link:hover{color:var(--text-accent)}.header-nav{display:flex;gap:var(--space-4);align-items:center;flex-wrap:wrap}.header-link{font-size:.75rem;color:var(--text-secondary);text-decoration:none;font-family:var(--font-sans);font-weight:700;text-transform:uppercase;letter-spacing:1px;transition:color var(--duration-fast) var(--ease-out)}.header-link:hover{color:var(--text-accent)}@media(max-width:640px){.header-nav{width:100%;order:3;justify-content:center;margin-top:var(--space-3);gap:var(--space-3)}}