@font-face{font-family:Inter;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/inter-400.woff2)format("woff2")}@font-face{font-family:Inter;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/inter-500.woff2)format("woff2")}@font-face{font-family:Inter;font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/inter-600.woff2)format("woff2")}@font-face{font-family:Inter;font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/inter-700.woff2)format("woff2")}:root{--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", system-ui, sans-serif;--bg-color:#fff;--bg-secondary:#f5f5f7;--bg-tertiary:#fbfbfd;--bg-card:#fff;--bg-card-hover:#fff;--text-main:#1d1d1f;--text-secondary:#424245;--text-muted:#86868b;--primary:#6c3ce9;--primary-hover:#8257f0;--primary-light:#6c3ce90f;--accent:#7c4dff;--gradient-primary:linear-gradient(135deg, #5b2de0, #7c4dff, #9b6dff);--border-color:#0000000a;--border-strong:#00000014;--shadow-sm:0 1px 3px #0000000a;--shadow-md:0 4px 16px #0000000f;--shadow-lg:0 12px 40px #00000014;--shadow-card:0 2px 12px #0000000f;--radius-sm:12px;--radius-md:16px;--radius-lg:20px;--radius-xl:980px;--nav-height:48px;--transition:cubic-bezier(.25, .1, .25, 1)}[data-theme=dark]{--bg-color:#000;--bg-secondary:#1c1c1e;--bg-tertiary:#0a0a0a;--bg-card:#1c1c1e;--bg-card-hover:#2c2c2e;--text-main:#f5f5f7;--text-secondary:#a1a1a6;--text-muted:#6e6e73;--primary:#7c4dff;--primary-hover:#9b6dff;--primary-light:#7c4dff1a;--accent:#7c4dff;--gradient-primary:linear-gradient(135deg, #5b2de0, #7c4dff, #9b6dff);--border-color:#ffffff0f;--border-strong:#ffffff1a;--shadow-sm:0 1px 3px #0000004d;--shadow-md:0 4px 16px #0006;--shadow-lg:0 12px 40px #00000080;--shadow-card:0 2px 12px #0006}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-color);color:var(--text-main);transition:background-color .3s var(--transition), color .3s var(--transition);letter-spacing:-.022em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;font-weight:400;line-height:1.47059;overflow-x:hidden}a{color:var(--primary);transition:color .2s var(--transition);text-decoration:none}a:hover{color:var(--primary-hover)}button{font-family:var(--font-sans);cursor:pointer;transition:all .3s var(--transition);background:0 0;border:none}.app-container{min-height:100vh;position:relative}.container{max-width:1080px;margin:0 auto;padding:0 22px}@keyframes wave-bounce{0%,to{transform:scaleY(.3)}50%{transform:scaleY(1)}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes fade-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.app-header{z-index:100;-webkit-backdrop-filter:saturate(180%)blur(20px);border-bottom:1px solid var(--border-color);height:var(--nav-height);background:#ffffffb8;align-items:center;display:flex;position:sticky;top:0}[data-theme=dark] .app-header{background:#1d1d1fb8}.header-content{justify-content:space-between;align-items:center;gap:1rem;width:100%;display:flex}.logo{color:var(--text-main);letter-spacing:-.03em;flex-shrink:0;align-items:center;gap:.4rem;font-size:1.1rem;font-weight:700;text-decoration:none;display:flex}.logo-img{object-fit:contain;width:110px;height:38px}.logo-dark{display:block}.logo-light,[data-theme=light] .logo-dark{display:none}[data-theme=light] .logo-light{display:block}.logo-img-sm{width:90px;height:32px}.search-bar{flex:1;max-width:400px;position:relative}.search-bar input{background:var(--bg-secondary);width:100%;color:var(--text-main);font-size:14px;font-family:var(--font-sans);transition:all .2s var(--transition);border:none;border-radius:8px;padding:8px 12px 8px 36px;font-weight:400;line-height:1.4}.search-bar input:focus{box-shadow:0 0 0 4px var(--primary-light);background:var(--bg-color);border:1px solid var(--primary);outline:none}.search-bar input::placeholder{color:var(--text-muted)}.search-icon{color:var(--text-muted);pointer-events:none;position:absolute;top:50%;left:10px;transform:translateY(-50%)}.header-upload-btn{width:36px;height:36px;color:var(--text-secondary);transition:all .2s var(--transition);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.header-upload-btn:hover{color:var(--primary);background:var(--primary-light)}.theme-toggle{width:36px;height:36px;color:var(--text-secondary);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.theme-toggle:hover{color:var(--text-main);background:var(--bg-secondary)}.header-categories-bar{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);padding:0;overflow:hidden}.header-cat-scroll{scrollbar-width:none;gap:0;padding:0;display:flex;overflow-x:auto}.header-cat-scroll::-webkit-scrollbar{display:none}.header-cat-btn{white-space:nowrap;color:var(--text-muted);transition:all .2s var(--transition);border:none;border-radius:0;padding:10px 16px;font-size:12px;font-weight:400;text-decoration:none;display:block}.header-cat-btn:hover{color:var(--text-main);background:var(--primary-light)}.header-cat-btn.active{color:var(--primary);font-weight:600}.main-content-padding{padding-top:48px;padding-bottom:48px}.section-title{font-family:var(--font-sans);color:var(--text-main);letter-spacing:-.03em;margin-bottom:20px;font-size:28px;font-weight:700;line-height:1.14}.back-btn{color:var(--primary);background:0 0;border:none;align-items:center;gap:4px;width:fit-content;margin-bottom:8px;padding:0;font-size:14px;font-weight:400;display:inline-flex}.back-btn:hover{text-decoration:underline}.intro-section{margin-bottom:40px}.intro-text{color:var(--text-secondary);max-width:720px;margin-bottom:32px;font-size:15px;line-height:1.7}.section-intro-text{color:var(--text-muted);max-width:720px;margin-bottom:24px;font-size:14px;line-height:1.7}.how-it-works{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:24px}.how-it-works-title{color:var(--text-main);letter-spacing:-.01em;margin-bottom:16px;font-size:17px;font-weight:600}.how-it-works-steps{grid-template-columns:repeat(3,1fr);gap:16px;display:grid}.how-step{align-items:flex-start;gap:10px;display:flex}.how-step-num{background:var(--gradient-primary);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:13px;font-weight:700;display:flex}.how-step p{color:var(--text-secondary);font-size:13px;line-height:1.5}.related-section{margin-top:48px}.category-cards-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;margin-bottom:48px;display:grid}.category-card{aspect-ratio:1;border-radius:var(--radius-sm);cursor:pointer;transition:all .3s var(--transition);text-decoration:none;position:relative;overflow:hidden}.category-card:hover{box-shadow:var(--shadow-lg);transform:scale(1.03)}.cat-bg{transition:transform .5s var(--transition);z-index:1;background-position:50%;background-size:cover;position:absolute;inset:0}.category-card:hover .cat-bg{transform:scale(1.08)}.cat-content{z-index:10;background:linear-gradient(#0000 40%,#000000b3 100%);flex-direction:column;justify-content:flex-end;align-items:flex-start;padding:16px;display:flex;position:absolute;inset:0}.cat-content h3{color:#fff;font-family:var(--font-sans);margin-bottom:2px;font-size:14px;font-weight:600;line-height:1.2}.cat-count{color:#ffffffb3;font-size:11px;font-weight:400}.ringtone-grid{border-radius:var(--radius-sm);border:1px solid var(--border-color);grid-template-columns:1fr;gap:0;display:grid}.ringtone-card{background:var(--bg-card);transition:background .2s var(--transition);border-bottom:1px solid var(--border-color);content-visibility:auto;contain-intrinsic-size:auto 88px;flex-direction:column;gap:12px;padding:16px 20px;display:flex;position:relative}.ringtone-card:last-child{border-bottom:none}.ringtone-card:hover{background:var(--bg-secondary)}.ringtone-card.playing-card{background:var(--primary-light)}.card-header{justify-content:space-between;align-items:center;gap:12px;width:100%;display:flex}.ringtone-title{letter-spacing:-.01em;white-space:nowrap;text-overflow:ellipsis;width:100%;color:var(--text-main);margin-bottom:1px;font-size:15px;font-weight:600;line-height:1.3;display:block;overflow:hidden}.ringtone-cat{color:var(--text-muted);text-transform:capitalize;font-size:12px;font-weight:400;text-decoration:none}.ringtone-cat:hover{color:var(--primary)}.audio-controls{align-items:center;gap:12px;display:flex}.play-btn{background:var(--primary);color:#fff;width:36px;height:36px;transition:all .2s var(--transition);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.play-btn:hover{background:var(--primary-hover);transform:scale(1.08)}.waveform{flex:1;align-items:center;gap:2px;height:24px;display:flex}.wave-bar{transform-origin:bottom;background:var(--text-muted);opacity:.2;border-radius:2px;flex:1;transition:all .15s}.wave-bar.active{background:var(--primary);opacity:.7}.duration{color:var(--text-muted);align-items:center;gap:4px;font-size:12px;font-weight:400;display:flex}.download-btn{border-radius:var(--radius-sm);background:var(--bg-secondary);color:var(--text-main);border:1px solid var(--border-strong);align-items:center;gap:8px;padding:8px 16px;font-size:13px;font-weight:500;display:flex}.download-btn:hover{background:var(--primary);color:#fff;border-color:#0000}.app-store-btn{transition:opacity .2s var(--transition);border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:100px;height:33px;display:flex;overflow:hidden;background:0 0!important;border:none!important;padding:0!important}.app-store-btn:hover{opacity:.7}.app-store-svg{object-fit:contain;width:115%;height:auto;min-height:185%}.app-store-btn .light-svg{display:none}.app-store-btn .dark-svg,[data-theme=dark] .app-store-btn .light-svg{display:block}[data-theme=dark] .app-store-btn .dark-svg{display:none}.gradient-download-btn{background:var(--gradient-primary);color:#fff;white-space:nowrap;transition:all .2s var(--transition);border:none;border-radius:980px;flex-shrink:0;align-items:center;gap:6px;padding:8px 16px;font-size:13px;font-weight:600;display:flex}.gradient-download-btn:hover{opacity:.85;transform:scale(1.03)}.card-actions{flex-shrink:0;align-items:center;gap:8px;display:flex}.share-btn{width:32px;height:32px;color:var(--text-muted);background:var(--bg-secondary);border:1px solid var(--border-color);transition:all .2s var(--transition);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.share-btn:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-light)}.detail-share-btn{border-radius:var(--radius-xl);color:var(--text-secondary);border:1px solid var(--border-strong);background:0 0;align-items:center;gap:6px;padding:12px 24px;font-size:14px;font-weight:500;transition:all .2s;display:flex}.detail-share-btn:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-light)}.open-in-app-btn{background:var(--primary);color:#fff;white-space:nowrap;border:none;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;padding:8px 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var(--border-strong);border-radius:50%;justify-content:center;align-items:center;width:22px;height:22px;font-size:11px;font-weight:700;display:flex}.tool-step-item.active .tool-step-num{background:var(--primary);color:#fff;border-color:#0000}.tool-step-item.completed .tool-step-num{color:#fff;background:#34c759;border-color:#0000}.tool-step-arrow{color:var(--text-muted);opacity:.4}.tool-info h2{color:var(--text-main);letter-spacing:-.01em;margin-bottom:16px;font-size:17px;font-weight:600}.tool-bpm-result{justify-content:center;padding:24px 0;display:flex}.tool-bpm-detecting{color:var(--text-muted);flex-direction:column;align-items:center;gap:12px;font-size:14px;display:flex}.tool-bpm-display{text-align:center}.tool-bpm-number{background:var(--gradient-primary);-webkit-text-fill-color:transparent;letter-spacing:-.04em;-webkit-background-clip:text;background-clip:text;font-size:72px;font-weight:800;line-height:1}.tool-bpm-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.1em;margin-top:4px;font-size:16px;font-weight:600}.tool-bpm-desc{color:var(--text-secondary);margin-top:12px;font-size:14px}.tool-add-file-btn{border-radius:var(--radius-sm);border:2px dashed var(--border-strong);background:var(--bg-secondary);width:100%;color:var(--text-secondary);font-size:14px;font-weight:500;font-family:var(--font-sans);cursor:pointer;transition:all .2s 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0;display:flex}.tool-recorder-live{flex-direction:column;align-items:center;gap:16px;width:100%;display:flex}.tool-recorder-timer{color:var(--text-main);font-variant-numeric:tabular-nums;letter-spacing:-.02em;align-items:center;gap:8px;font-size:28px;font-weight:700;display:flex}.tool-recorder-dot{color:#ff3b30;animation:1s ease-in-out infinite recorder-pulse}@keyframes recorder-pulse{0%,to{opacity:1}50%{opacity:.3}}.tool-recorder-levels{background:var(--bg-secondary);border-radius:10px;align-items:center;gap:3px;width:100%;max-width:300px;height:48px;padding:8px;display:flex}.tool-recorder-bar{background:var(--primary);border-radius:2px;flex:1;min-width:3px;transition:height .1s}.tool-recorder-controls{gap:16px;display:flex}.tool-record-btn{border-radius:var(--radius-xl);color:#fff;font-size:14px;font-weight:600;font-family:var(--font-sans);cursor:pointer;transition:all .2s var(--transition);background:#ff3b30;border:none;align-items:center;gap:8px;padding:14px 28px;display:flex}.tool-record-btn:hover{opacity:.9;transform:scale(1.02)}.tool-stop-btn{border-radius:var(--radius-xl);background:var(--bg-secondary);color:var(--text-main);font-size:14px;font-weight:600;font-family:var(--font-sans);border:1px solid var(--border-strong);cursor:pointer;transition:all .2s var(--transition);align-items:center;gap:8px;padding:14px 28px;display:flex}.tool-stop-btn:hover{color:#ff3b30;border-color:#ff3b30}@media (width<=768px){.tools-grid{grid-template-columns:1fr}.tool-format-grid{grid-template-columns:1fr 1fr}.tool-steps{flex-wrap:wrap;justify-content:center;gap:6px}.tool-step-arrow{display:none}.tool-header{flex-direction:column;align-items:flex-start;gap:12px}}@media (width<=480px){.tool-card{padding:16px}.tool-card-icon{border-radius:10px;width:40px;height:40px}.tool-format-grid{grid-template-columns:1fr}.tool-presets{flex-direction:column;align-items:flex-start}.tool-bpm-number{font-size:56px}}.section-spacing{margin-top:48px}.content-spacing{margin-top:24px}.subsection-spacing{margin-top:32px}.tight-spacing{margin-top:16px}.category-section,.ringtones-section{margin-top:48px}.tool-info{margin-top:32px}.tool-page-content{max-width:900px;margin:4rem auto 0}.faq-section{margin-top:3rem}