.zt-audio-tool { padding: 42px 0 64px; color: #163025; }
.zt-audio-hero { max-width: 760px; margin: 0 auto 26px; text-align: center; }
.zt-audio-hero h1 { margin: 10px 0; font-size: clamp(30px, 4vw, 44px); letter-spacing: -.04em; }
.zt-audio-hero p { margin: 0 auto; color: #587064; line-height: 1.75; }
.zt-audio-local { display: inline-block; margin-top: 15px; padding: 6px 11px; border-radius: 999px; background: #e9f8ef; color: #207446; font-size: 13px; font-weight: 700; }
.zt-audio-workspace { max-width: 940px; margin: 0 auto; }
.zt-audio-file-card, .zt-audio-preview, .zt-audio-export-card, .zt-audio-status-card, .zt-audio-result { box-sizing: border-box; margin-top: 16px; border: 1px solid #dceae1; border-radius: 16px; background: #fff; box-shadow: 0 7px 22px rgba(27, 77, 49, .045); }
.zt-audio-upload { display: grid; gap: 7px; min-height: 150px; padding: 28px; border: 1.5px dashed #a8cdb3; border-radius: 16px; background: linear-gradient(135deg, #f6fff8, #fcfffc); text-align: center; cursor: pointer; }
.zt-audio-upload:hover { border-color: #2e9560; background: #f3fff7; }
.zt-audio-upload input { position: absolute; inline-size: 1px; block-size: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.zt-audio-upload strong { color: #185c36; font-size: 18px; }
.zt-audio-upload span, .zt-audio-upload small { color: #60776b; }
.zt-audio-upload small { font-size: 12px; }
.zt-audio-file-info { margin: 12px 18px 18px; padding: 10px 12px; border-radius: 9px; background: #f3f8f5; color: #476356; font-size: 14px; overflow-wrap: anywhere; }
.zt-audio-preview { padding: 22px; }
.zt-audio-panel-heading { display: flex; gap: 20px; align-items: start; justify-content: space-between; margin-bottom: 16px; }
.zt-audio-panel-heading h2, .zt-audio-export-card h2, .zt-audio-result h2 { margin: 0 0 5px; font-size: 19px; }
.zt-audio-panel-heading p, .zt-audio-export-card p, .zt-audio-result p { margin: 0; color: #60776b; font-size: 14px; line-height: 1.65; }
.zt-audio-panel-heading > span { padding: 5px 9px; border-radius: 7px; background: #eff8f2; color: #31704c; font: 700 13px/1.1 ui-monospace, SFMono-Regular, Consolas, monospace; white-space: nowrap; }
.zt-audio-preview audio, .zt-audio-preview video { width: 100%; display: block; border-radius: 10px; background: #14241b; }
.zt-video-preview video { max-height: 440px; }
.zt-audio-timeline { display: grid; gap: 14px; margin-top: 20px; }
.zt-audio-timeline label { display: grid; grid-template-columns: 46px minmax(58px, auto) 1fr; align-items: center; gap: 11px; color: #315645; font-size: 14px; font-weight: 700; }
.zt-audio-timeline output { color: #61766b; font: 13px/1 ui-monospace, SFMono-Regular, Consolas, monospace; }
.zt-audio-timeline input { accent-color: #238554; min-width: 0; }
.zt-audio-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.zt-audio-export-card { display: grid; grid-template-columns: minmax(0, 1fr) minmax(190px, 240px); gap: 18px; padding: 22px; align-items: start; }
.zt-audio-export-card label { display: grid; gap: 8px; color: #365e4a; font-size: 14px; font-weight: 700; }
.zt-audio-export-card select { min-height: 40px; padding: 0 10px; border: 1px solid #b9d6c2; border-radius: 8px; background: #fff; color: #244b38; }
.zt-audio-export-card .zt-audio-actions { grid-column: 1 / -1; margin-top: 0; }
.zt-audio-status-card { display: grid; grid-template-columns: minmax(0, 1fr) minmax(110px, 260px) 44px; gap: 14px; align-items: center; padding: 17px 20px; }
.zt-audio-status-card strong, .zt-audio-status-card span { display: block; }
.zt-audio-status-card strong { color: #26553b; font-size: 14px; }
.zt-audio-status-card span { margin-top: 4px; color: #667d70; font-size: 13px; line-height: 1.5; }
.zt-audio-status-card progress { width: 100%; height: 9px; overflow: hidden; border: 0; border-radius: 999px; appearance: none; }
.zt-audio-status-card progress::-webkit-progress-bar { background: #e8f1eb; }
.zt-audio-status-card progress::-webkit-progress-value { background: #2f9a61; }
.zt-audio-status-card progress::-moz-progress-bar { background: #2f9a61; }
.zt-audio-status-card output { color: #397151; font: 700 13px/1 ui-monospace, SFMono-Regular, Consolas, monospace; text-align: right; }
.zt-audio-result { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 22px; border-color: #b9dfc4; background: #f5fff8; }
.zt-audio-result .zt-section-kicker { color: #2d8552; }
.zt-audio-open-source { margin: 18px 2px 0; color: #718378; font-size: 12px; text-align: center; }
.zt-audio-open-source a { color: #357752; }
.zt-audio-exact-range { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 16px; }
.zt-audio-exact-range label { display: grid; gap: 6px; font-size: 14px; }
.zt-audio-exact-range input { width: 160px; max-width: 100%; padding: 8px; border: 1px solid #b9d6c2; border-radius: 8px; }
.zt-audio-result { flex-wrap: wrap; }
.zt-audio-result audio { width: 100%; order: 3; }
@media (max-width: 680px) {
    .zt-audio-tool { padding-top: 27px; }
    .zt-audio-preview, .zt-audio-export-card { padding: 17px; }
    .zt-audio-export-card, .zt-audio-status-card { grid-template-columns: 1fr; }
    .zt-audio-status-card output { text-align: left; }
    .zt-audio-result { align-items: flex-start; flex-direction: column; }
    .zt-audio-result .button { width: 100%; text-align: center; }
    .zt-audio-timeline label { grid-template-columns: 43px 56px 1fr; gap: 8px; }
}