.tadaoto-narration-bgm-mix-page .nbm-app{margin:40px auto 0;max-width:960px}.tadaoto-narration-bgm-mix-page [hidden]{display:none!important}.tadaoto-narration-bgm-mix-page .tool-panel+.tool-panel{margin-top:20px}.tadaoto-narration-bgm-mix-page .nbm-drops{display:grid;gap:16px;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:24px}.tadaoto-narration-bgm-mix-page .nbm-drop-block h3{font-size:14px;margin:0 0 10px}.tadaoto-narration-bgm-mix-page .nbm-drop{background:var(--tool-panel);border:2px dashed #aeb5bc;border-radius:12px;cursor:pointer;padding:26px 16px 24px;text-align:center}.tadaoto-narration-bgm-mix-page .nbm-drop:hover,.tadaoto-narration-bgm-mix-page .nbm-drop.is-over{background:#edf4fc;border-color:var(--tool-accent)}.tadaoto-narration-bgm-mix-page .nbm-drop.is-disabled{cursor:wait;opacity:.55}.tadaoto-narration-bgm-mix-page .nbm-drop__icon{color:var(--tool-accent);display:inline-block;height:40px;margin-bottom:8px;width:40px}.tadaoto-narration-bgm-mix-page .nbm-drop__icon svg{fill:none;height:100%;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:2;width:100%}.tadaoto-narration-bgm-mix-page .nbm-drop__main{font-size:15px;font-weight:700;margin:0 0 5px}.tadaoto-narration-bgm-mix-page .nbm-drop__sub,.tadaoto-narration-bgm-mix-page .nbm-file-info,.tadaoto-narration-bgm-mix-page .nbm-status{color:var(--tool-muted);font-size:13px;line-height:1.65}.tadaoto-narration-bgm-mix-page .nbm-file-info{margin:10px 0 0;overflow-wrap:anywhere}.tadaoto-narration-bgm-mix-page audio{display:block;margin-top:10px;width:100%}.tadaoto-narration-bgm-mix-page fieldset{border:0;border-top:1px solid var(--tool-line);margin:24px 0 0;padding:22px 0 0}.tadaoto-narration-bgm-mix-page legend{font-size:16px;font-weight:700;padding:0}.tadaoto-narration-bgm-mix-page .nbm-mode-list{display:grid;gap:10px;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:16px}.tadaoto-narration-bgm-mix-page .nbm-mode-list label{align-items:flex-start;background:#fff;border:1px solid #b8bec5;border-radius:10px;cursor:pointer;display:flex;gap:9px;padding:14px}.tadaoto-narration-bgm-mix-page .nbm-mode-list label.is-selected{background:#edf4fc;border-color:var(--tool-accent);box-shadow:inset 0 0 0 1px var(--tool-accent)}.tadaoto-narration-bgm-mix-page .nbm-mode-list input{accent-color:var(--tool-accent);margin-top:4px}.tadaoto-narration-bgm-mix-page .nbm-mode-list strong,.tadaoto-narration-bgm-mix-page .nbm-mode-list small{display:block}.tadaoto-narration-bgm-mix-page .nbm-mode-list small{color:var(--tool-muted);font-size:11px;margin-top:3px}.tadaoto-narration-bgm-mix-page .nbm-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.tadaoto-narration-bgm-mix-page .nbm-button{border:1px solid #b8bec5;border-radius:999px;cursor:pointer;font:inherit;font-size:14px;font-weight:700;min-height:46px;padding:11px 22px}.tadaoto-narration-bgm-mix-page .nbm-button--primary{background:var(--tool-accent);border-color:var(--tool-accent);color:#fff}.tadaoto-narration-bgm-mix-page .nbm-button--secondary{background:#fff;color:var(--tool-ink)}.tadaoto-narration-bgm-mix-page .nbm-button:disabled{cursor:wait;opacity:.55}.tadaoto-narration-bgm-mix-page .nbm-progress{background:#dfe5e9;border-radius:999px;height:8px;margin-top:18px;overflow:hidden}.tadaoto-narration-bgm-mix-page .nbm-progress span{background:var(--tool-accent);display:block;height:100%;transition:width .3s ease;width:0}.tadaoto-narration-bgm-mix-page .nbm-status{margin:14px 0 -.3em}.tadaoto-narration-bgm-mix-page .nbm-status.is-error{color:#a33a34;font-weight:700}.tadaoto-narration-bgm-mix-page .nbm-result{border-color:#b7ddcb}.tadaoto-narration-bgm-mix-page .nbm-result audio{margin-top:20px}.tadaoto-narration-bgm-mix-page .nbm-download{background:var(--tool-accent);border-radius:999px;color:#fff;display:block;font-size:15px;font-weight:700;margin-top:18px;max-width:320px;padding:13px 20px;text-align:center;text-decoration:none}.tadaoto-narration-bgm-mix-page .nbm-note{background:var(--tool-panel);border-radius:12px;margin-top:22px;padding:22px 24px}.tadaoto-narration-bgm-mix-page .nbm-note h2{font-size:16px;margin:0 0 10px}.tadaoto-narration-bgm-mix-page .nbm-note ul{color:var(--tool-muted);font-size:13px;line-height:1.75;margin:0;padding-left:1.3em}.tadaoto-narration-bgm-mix-page :focus-visible{outline:3px solid rgba(6,147,205,.32);outline-offset:3px}@media(max-width:640px){.tadaoto-narration-bgm-mix-page .nbm-drops,.tadaoto-narration-bgm-mix-page .nbm-mode-list{grid-template-columns:1fr}.tadaoto-narration-bgm-mix-page .nbm-actions{display:grid}.tadaoto-narration-bgm-mix-page .nbm-button{width:100%}}