:root{--color-bg:#f7f8fb;--color-bg-elevated:#fff;--color-bg-subtle:#eef0f5;--color-border:#e2e6ee;--color-border-strong:#cbd2e0;--color-text:#1a1d29;--color-text-muted:#5c6478;--color-text-subtle:#8a91a3;--color-primary:#4f46e5;--color-primary-hover:#4338ca;--color-primary-bg:#eef2ff;--color-success:#16a34a;--color-error:#dc2626;--color-warning:#d97706;--shadow-sm:0 1px 2px #0f172a0d;--shadow-md:0 4px 12px #0f172a14;--radius-sm:6px;--radius-md:10px;--radius-lg:16px}[data-theme=dark]{--color-bg:#0f1117;--color-bg-elevated:#181b25;--color-bg-subtle:#21242f;--color-border:#2a2e3c;--color-border-strong:#3a3f50;--color-text:#e8eaf0;--color-text-muted:#a8aebd;--color-text-subtle:#6f7588;--color-primary:#818cf8;--color-primary-hover:#a5b4fc;--color-primary-bg:#1e1f3d;--color-success:#22c55e;--color-error:#f87171;--color-warning:#fbbf24;--shadow-sm:0 1px 2px #0000004d;--shadow-md:0 4px 12px #0006}*{box-sizing:border-box}html{font-size:62.5%}body{color:var(--color-text);background-color:var(--color-bg);flex-direction:column;min-height:100vh;margin:0;font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Yu Gothic,Meiryo,sans-serif;font-size:1.5rem;line-height:1.7;transition:background-color .2s,color .2s;display:flex}code{background:var(--color-bg-subtle);border-radius:var(--radius-sm);padding:.2rem .6rem;font-family:SF Mono,Menlo,Consolas,monospace;font-size:.9em}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}.l-inner{width:100%;max-width:880px;margin:0 auto;padding:0 2rem}.l-header{background:var(--color-bg-elevated);border-bottom:1px solid var(--color-border);z-index:10;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:1.6rem 0;position:sticky;top:0}.l-header .l-inner{justify-content:space-between;align-items:center;gap:2rem;display:flex}.l-header__title{letter-spacing:.02em;align-items:center;gap:.8rem;margin:0;font-size:2rem;font-weight:700;display:flex}.l-header__logo{font-size:2.4rem}.l-header__theme-tabs{background:var(--color-bg-subtle);border-radius:var(--radius-md);gap:.2rem;padding:.4rem;display:inline-flex}.l-header__theme-tab{appearance:none;color:var(--color-text-muted);cursor:pointer;border-radius:var(--radius-sm);background:0 0;border:none;padding:.7rem 1.4rem;font-family:inherit;font-size:1.3rem;font-weight:500;transition:all .15s}.l-header__theme-tab:hover{color:var(--color-text)}.l-header__theme-tab.is-active{background:var(--color-bg-elevated);color:var(--color-text);box-shadow:var(--shadow-sm)}.l-main{flex:auto;padding:4rem 0 6rem}.l-footer{background:var(--color-bg-elevated);border-top:1px solid var(--color-border);text-align:center;padding:2.4rem 0}.l-footer__text{color:var(--color-text-muted);margin:0 0 .4rem;font-size:1.4rem}.l-footer__note{color:var(--color-text-subtle);margin:0;font-size:1.2rem}.p-privacy{background:var(--color-primary-bg);border:1px solid var(--color-border);border-left:4px solid var(--color-primary);border-radius:var(--radius-md);margin-bottom:3.2rem;padding:1.6rem 2rem}.p-privacy__lead{color:var(--color-text);margin:0;font-size:1.4rem;line-height:1.7}.p-privacy__lead strong{color:var(--color-primary)}.p-converter{background:var(--color-bg-elevated);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);margin-bottom:3.2rem;padding:3.2rem}.p-converter__title{margin:0 0 .8rem;font-size:2.2rem;font-weight:700}.p-converter__desc{color:var(--color-text-muted);margin:0 0 2.4rem;font-size:1.4rem}.p-dropzone{border:2px dashed var(--color-border-strong);border-radius:var(--radius-md);text-align:center;cursor:pointer;background:var(--color-bg-subtle);padding:4.8rem 2rem;transition:all .2s;position:relative}.p-dropzone:hover,.p-dropzone:focus-visible,.p-dropzone.is-dragover{border-color:var(--color-primary);background:var(--color-primary-bg);outline:none}.p-dropzone__icon{opacity:.7;margin-bottom:1.2rem;font-size:4.8rem}.p-dropzone__text{color:var(--color-text);margin:0 0 .8rem;font-size:1.5rem}.p-dropzone__note{color:var(--color-text-subtle);margin:0;font-size:1.2rem}.p-settings{border-top:1px solid var(--color-border);margin-top:2.4rem;padding-top:2.4rem}.p-settings__row{flex-direction:column;gap:.8rem;display:flex}.p-settings__label{color:var(--color-text);font-size:1.4rem;font-weight:600}.p-settings__label #quality-value{min-width:3em;color:var(--color-primary);font-variant-numeric:tabular-nums;display:inline-block}.p-settings__slider{appearance:none;background:var(--color-bg-subtle);cursor:pointer;border-radius:3px;outline:none;width:100%;height:6px}.p-settings__slider::-webkit-slider-thumb{appearance:none;background:var(--color-primary);cursor:pointer;border:3px solid var(--color-bg-elevated);width:22px;height:22px;box-shadow:var(--shadow-sm);border-radius:50%;transition:transform .1s}.p-settings__slider::-webkit-slider-thumb:hover{transform:scale(1.1)}.p-settings__slider::-moz-range-thumb{background:var(--color-primary);cursor:pointer;border:3px solid var(--color-bg-elevated);width:22px;height:22px;box-shadow:var(--shadow-sm);border-radius:50%}.p-settings__hint{color:var(--color-text-subtle);justify-content:space-between;margin-top:.2rem;font-size:1.1rem;display:flex}.p-files{background:var(--color-bg-elevated);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);margin-bottom:3.2rem;padding:2.4rem 3.2rem}.p-files__header{border-bottom:1px solid var(--color-border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1.2rem;margin-bottom:2rem;padding-bottom:1.6rem;display:flex}.p-files__title{margin:0;font-size:1.8rem;font-weight:700}.p-files__count{background:var(--color-primary-bg);color:var(--color-primary);border-radius:999px;margin-left:.6rem;padding:.2rem 1rem;font-size:1.3rem;display:inline-block}.p-files__actions{gap:.8rem;display:flex}.p-files__list{flex-direction:column;gap:1rem;margin:0;padding:0;list-style:none;display:flex}.c-btn{appearance:none;border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;background:0 0;border:1px solid #0000;padding:1rem 1.8rem;font-family:inherit;font-size:1.4rem;font-weight:600;transition:all .15s}.c-btn:disabled{opacity:.4;cursor:not-allowed}.c-btn--primary{background:var(--color-primary);color:#fff}.c-btn--primary:hover:not(:disabled){background:var(--color-primary-hover)}[data-theme=dark] .c-btn--primary{color:#0f1117}.c-btn--secondary{background:var(--color-bg-subtle);color:var(--color-text);border-color:var(--color-border)}.c-btn--secondary:hover:not(:disabled){background:var(--color-border)}.c-btn--small{padding:.6rem 1.2rem;font-size:1.2rem}.c-file{background:var(--color-bg-subtle);border-radius:var(--radius-md);border:1px solid var(--color-border);align-items:center;gap:1.6rem;padding:1.4rem 1.6rem;display:flex}.c-file__main{flex:auto;min-width:0}.c-file__name{color:var(--color-text);white-space:nowrap;text-overflow:ellipsis;margin-bottom:.2rem;font-size:1.4rem;font-weight:600;overflow:hidden}.c-file__meta{color:var(--color-text-muted);gap:1.2rem;font-size:1.2rem;display:flex}.c-file__status{font-weight:500}.c-file.is-pending .c-file__status{color:var(--color-text-muted)}.c-file.is-converting .c-file__status{color:var(--color-warning)}.c-file.is-done .c-file__status{color:var(--color-success)}.c-file.is-error .c-file__status{color:var(--color-error)}.c-file__progress{background:var(--color-border);border-radius:2px;height:4px;margin-top:.6rem;overflow:hidden}.c-file__progress-bar{background:var(--color-primary);width:0%;height:100%;transition:width .3s}.c-file.is-done .c-file__progress-bar{background:var(--color-success);width:100%!important}.c-file.is-error .c-file__progress-bar{background:var(--color-error)}.c-file__actions{flex-shrink:0;gap:.6rem;display:flex}.c-file__download{border-color:var(--color-primary);color:var(--color-primary);background:var(--color-bg-elevated)}.c-file__download:hover:not(:disabled){background:var(--color-primary);color:#fff}[data-theme=dark] .c-file__download:hover:not(:disabled){color:#0f1117}.c-file__remove{width:3.2rem;padding:.6rem 0;font-size:1.6rem;line-height:1}.p-info{flex-direction:column;gap:1rem;display:flex}.p-info__block{background:var(--color-bg-elevated);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:0;overflow:hidden}.p-info__summary{cursor:pointer;-webkit-user-select:none;user-select:none;padding:1.4rem 2rem;font-size:1.4rem;font-weight:600}.p-info__summary:hover{background:var(--color-bg-subtle)}.p-info__body{color:var(--color-text-muted);padding:0 2rem 1.6rem;font-size:1.3rem;line-height:1.8}.p-info__body ul{margin:0;padding-left:1.8rem}.p-info__body li{margin-bottom:.4rem}@media (max-width:640px){.l-header .l-inner{flex-direction:column;gap:1rem}.l-header__title{font-size:1.8rem}.l-main{padding:2.4rem 0 4rem}.p-converter,.p-files{padding:2rem}.p-dropzone{padding:3.2rem 1.6rem}.p-files__header{flex-direction:column;align-items:stretch}.p-files__actions{flex-direction:column}.c-file{flex-direction:column;align-items:stretch}}