:root{--bg:#080808;--panel:#111;--line:#2a2a2a;--text:#f5f5f5;--muted:#8b8b8b}
*{box-sizing:border-box}html{background:var(--bg);color:var(--text)}body{margin:0;background:linear-gradient(180deg,#070707,#0b0b0b);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Helvetica Neue",Arial,sans-serif;line-height:1.55}
a{color:inherit;text-decoration:none}.wrap{width:min(980px,calc(100% - 28px));margin:auto}
header{position:sticky;top:0;z-index:20;background:rgba(8,8,8,.9);backdrop-filter:blur(18px);border-bottom:1px solid #202020}.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:14px}.brand{display:flex;align-items:baseline;gap:9px;font-weight:900}.brand .main{font-size:24px}.brand .jp{font-size:11px;color:#8c8c8c}.nav nav{display:flex;gap:17px;font-size:11px;letter-spacing:.12em;color:#aaa}
.hero{padding:72px 0 40px}.kicker,.mode{font-size:11px;letter-spacing:.16em;color:#858585;font-weight:900}.hero h1{font-size:clamp(72px,14vw,132px);line-height:.78;letter-spacing:-.075em;margin:18px 0 28px}.lead{font-size:20px;color:#b8b8b8;max-width:780px}
.mix-shell{display:grid;gap:14px;padding-bottom:72px}.mix-card{background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:24px}.mix-card h2{font-size:34px;letter-spacing:-.04em;margin:7px 0 18px}
.source-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.dropzone{display:grid;place-items:center;text-align:center;min-height:190px;border:1px dashed #555;border-radius:18px;background:#0a0a0a;padding:22px;cursor:pointer;transition:.18s}.dropzone:hover,.dropzone.drag{border-color:#eee;background:#131313}.dropzone input{display:none}.dropzone strong{font-size:25px;letter-spacing:-.03em}.dropzone span{margin-top:7px;color:#858585;font-size:12px}.file-meta{margin-top:10px;padding:12px;border:1px solid #262626;border-radius:12px;background:#090909;color:#aaa;overflow-wrap:anywhere}.file-meta.ready{border-color:#ddd;color:#eee}.mini-note{margin-top:12px;color:#747474;font-size:11px}
.style-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.style{appearance:none;text-align:left;background:#090909;color:#fff;border:1px solid #2d2d2d;border-radius:15px;padding:16px;min-height:100px;cursor:pointer}.style:hover{border-color:#555}.style.active{border-color:#f1f1f1;box-shadow:inset 0 0 0 1px #f1f1f1;background:#161616}.style strong{display:block;font-size:17px}.style span{display:block;color:#858585;font-size:11px;margin-top:7px}
.engine-note{margin-top:16px;padding:16px;border:1px solid #292929;border-radius:14px;background:#0a0a0a}.engine-note strong{display:block}.engine-note span,.engine-note small{display:block;color:#858585;margin-top:5px}.engine-note span{font-size:12px}.engine-note small{font-size:10px}
.btn{display:flex;align-items:center;justify-content:center;width:100%;min-height:56px;border:1px solid #f3f3f3;border-radius:13px;background:#f3f3f3;color:#090909;font-weight:950;letter-spacing:.04em;font-size:14px;cursor:pointer}.btn.secondary{background:#0a0a0a;color:#fff;border-color:#343434}.btn:disabled{opacity:.4;cursor:default}
.job-progress{margin-top:18px;padding:16px;border:1px solid #292929;border-radius:14px;background:#090909}.progress-track{height:10px;background:#202020;border-radius:999px;overflow:hidden}.progress-track span{display:block;height:100%;width:0;background:#f4f4f4;transition:width .3s}.progress-copy{display:flex;justify-content:space-between;gap:14px;margin-top:10px}.progress-copy strong{font-size:12px;letter-spacing:.08em}.progress-copy span{font-size:12px;color:#898989;text-align:right}.status-text{min-height:20px;color:#aaa;font-size:12px;margin-top:10px}
.result-card h2{font-size:54px;margin:7px 0 20px;letter-spacing:-.05em}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-bottom:16px}.metrics div{background:#090909;border:1px solid #282828;border-radius:14px;padding:14px}.metrics span{display:block;color:#777;font-size:9px;letter-spacing:.1em}.metrics strong{display:block;margin-top:5px;font-size:18px}.download-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.next-step{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:14px;border:1px solid #292929;border-radius:14px;padding:16px;background:#0a0a0a}.next-step small{display:block;color:#777;font-size:9px;letter-spacing:.12em}.next-step strong{display:block;font-size:18px;margin-top:3px}.next-step a{font-size:12px;font-weight:900}.expire{text-align:center;color:#707070;font-size:11px;margin:11px 0 0}
footer{border-top:1px solid #202020;padding:30px 0 48px;color:#696969;font-size:11px}
@media(max-width:700px){.nav{gap:10px}.nav nav{display:flex;gap:9px;font-size:10px}.brand .main{font-size:17px}.brand .jp{display:none}.hero{padding-top:48px}.hero h1{font-size:82px}.lead{font-size:16px}.mix-card{padding:18px;border-radius:18px}.source-grid,.style-grid,.download-grid{grid-template-columns:1fr}.metrics{grid-template-columns:1fr 1fr}.progress-copy{display:block}.progress-copy span{display:block;text-align:left;margin-top:5px}.next-step{align-items:flex-start;flex-direction:column}}

.control-list{display:grid;gap:10px}.control-row{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;padding:15px;border:1px solid #2b2b2b;border-radius:15px;background:#090909}.control-row>span strong{display:block;font-size:15px}.control-row>span small{display:block;color:#777;font-size:10px;margin-top:3px}.control-row output,.eq-grid output{font-size:12px;font-weight:900;color:#f2f2f2;font-variant-numeric:tabular-nums}.control-row input{grid-column:1/-1;width:100%}
.eq-title{margin:18px 0 9px;color:#818181;font-size:10px;font-weight:900;letter-spacing:.14em}.eq-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.eq-grid label{display:grid;gap:9px;padding:14px;border:1px solid #2b2b2b;border-radius:14px;background:#090909}.eq-grid label>span{font-size:12px;font-weight:900}.eq-grid small{color:#6f6f6f;font-weight:700}.eq-grid input{width:100%}
input[type="range"]{accent-color:#f4f4f4}
@media(max-width:700px){.eq-grid{grid-template-columns:1fr}.control-row{grid-template-columns:1fr auto}}

.master-handoff{display:grid;grid-template-columns:1fr;align-items:stretch}.master-choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px;width:100%;margin-top:12px}.master-choice{appearance:none;text-align:left;background:#090909;color:#fff;border:1px solid #373737;border-radius:13px;padding:14px;cursor:pointer}.master-choice:hover{border-color:#777}.master-choice:disabled{opacity:.45;cursor:default}.master-choice strong{display:block;font-size:14px}.master-choice small{display:block;color:#818181;font-size:10px;margin-top:4px}.handoff-status{min-height:18px;color:#9a9a9a;font-size:11px;margin-top:9px}.handoff-status.error{color:#d0d0d0}.handoff-status.success{color:#f2f2f2;font-weight:800}
@media(max-width:700px){.master-choice-grid{grid-template-columns:1fr}}

.auto-balance-panel{margin:0 0 14px;padding:15px;border:1px solid #343434;border-radius:15px;background:#0c0c0c}.auto-balance-toggle{display:flex;align-items:center;justify-content:space-between;gap:18px;cursor:pointer}.auto-balance-toggle span strong{display:block;font-size:15px;letter-spacing:.02em}.auto-balance-toggle span small{display:block;color:#858585;font-size:10px;line-height:1.5;margin-top:3px}.auto-balance-toggle input{appearance:none;width:52px;height:30px;flex:0 0 52px;border-radius:999px;border:1px solid #444;background:#222;padding:0;position:relative;transition:.18s}.auto-balance-toggle input:before{content:"";position:absolute;width:22px;height:22px;left:3px;top:3px;border-radius:50%;background:#777;transition:.18s}.auto-balance-toggle input:checked{background:#f2f2f2;border-color:#f2f2f2}.auto-balance-toggle input:checked:before{left:25px;background:#090909}.auto-balance-hint{margin-top:10px;color:#d0d0d0;font-size:10px;font-weight:800;letter-spacing:.04em}.auto-balance-hint.manual{color:#858585}.control-row input:disabled{opacity:.35;cursor:not-allowed}.auto-balance-result{margin-top:10px;padding:13px 15px;border:1px solid #343434;border-radius:14px;background:#0a0a0a;display:grid;grid-template-columns:1fr auto;gap:3px 14px;align-items:center}.auto-balance-result[hidden]{display:none}.auto-balance-result span{font-size:10px;color:#929292;letter-spacing:.12em;font-weight:900}.auto-balance-result strong{font-size:18px}.auto-balance-result small{grid-column:1/-1;color:#6f6f6f;font-size:9px}

.preview-ab{margin-top:14px;padding:16px;border:1px solid #353535;border-radius:16px;background:#090909}.preview-ab[hidden],.preview-gate[hidden]{display:none}.preview-ab-head span,.preview-gate small{display:block;color:#878787;font-size:9px;font-weight:900;letter-spacing:.12em}.preview-ab-head strong{display:block;font-size:20px;margin-top:3px}.preview-ab-head small{display:block;color:#6e6e6e;font-size:10px;margin-top:2px}.preview-audio-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.preview-audio-grid label{display:block;padding:13px;border:1px solid #292929;border-radius:13px;background:#0d0d0d}.preview-audio-grid label strong{font-size:11px}.preview-audio-grid audio{width:100%;margin-top:9px}.preview-gate{margin-top:14px;padding:18px;border:1px solid #555;border-radius:16px;background:linear-gradient(135deg,#171717,#0b0b0b)}.preview-gate>div:first-child>strong{display:block;font-size:22px;margin-top:2px}.preview-gate>div:first-child>span{display:block;color:#929292;font-size:11px;margin-top:4px}.preview-unlock-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:14px}
@media(max-width:700px){.preview-audio-grid,.preview-unlock-grid{grid-template-columns:1fr}}


.preflight-panel{margin-top:16px;padding:17px;border:1px solid #343434;border-radius:16px;background:#0a0a0a}
.preflight-panel[hidden]{display:none}.preflight-head>span{display:block;color:#858585;font-size:9px;font-weight:900;letter-spacing:.13em}.preflight-head>strong{display:block;font-size:22px;margin-top:3px}.preflight-head>small{display:block;color:#858585;font-size:10px;margin-top:3px}
.preflight-panel.pass{border-color:#4b4b4b}.preflight-panel.warning{border-color:#8a7450;background:linear-gradient(135deg,#17140e,#0a0a0a)}
.preflight-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:13px}.preflight-metrics>div{padding:12px;border:1px solid #292929;border-radius:12px;background:#0d0d0d}.preflight-metrics span{display:block;color:#777;font-size:8px;letter-spacing:.1em}.preflight-metrics strong{display:block;font-size:16px;margin-top:3px}.preflight-metrics small{display:block;color:#777;font-size:9px;margin-top:2px}
.preflight-warnings{display:grid;gap:8px;margin-top:12px}.preflight-warning{padding:12px;border:1px solid #4f4635;border-radius:12px;background:#11100c}.preflight-warning strong{display:block;font-size:11px;letter-spacing:.05em}.preflight-warning span{display:block;color:#aaa;font-size:10px;margin-top:4px}
.preflight-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:13px}.preflight-actions[hidden]{display:none}
@media(max-width:700px){.preflight-metrics,.preflight-actions{grid-template-columns:1fr}}


/* ZASU AUDIO Feedback v1 */
.feedback-v1{margin-top:14px;padding:18px;border:1px solid #303030;border-radius:16px;background:#0a0a0a}.feedback-v1[hidden]{display:none}.feedback-v1 h3{font-size:22px;margin:5px 0 3px}.feedback-v1>p{color:#858585;font-size:10px;margin:0}
.feedback-sentiment{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:14px}.feedback-vote{appearance:none;display:flex;align-items:center;justify-content:center;gap:9px;min-height:62px;border:1px solid #353535;border-radius:13px;background:#0d0d0d;color:#fff;cursor:pointer}.feedback-vote span{font-size:23px}.feedback-vote strong{font-size:13px}.feedback-vote.active{border-color:#eee;box-shadow:inset 0 0 0 1px #eee;background:#171717}
.feedback-details{margin-top:13px;padding-top:13px;border-top:1px solid #292929}.feedback-details[hidden],.feedback-tags[hidden]{display:none}.feedback-label{color:#858585;font-size:9px;font-weight:900;letter-spacing:.06em;margin-bottom:8px}.feedback-tags{display:flex;flex-wrap:wrap;gap:7px}.feedback-tags button{appearance:none;border:1px solid #343434;border-radius:999px;background:#0a0a0a;color:#aaa;padding:8px 11px;font-size:10px;cursor:pointer}.feedback-tags button.active{border-color:#eee;color:#fff;background:#191919}.feedback-details textarea{width:100%;min-height:88px;margin-top:12px;padding:12px;border:1px solid #303030;border-radius:12px;background:#090909;color:#fff;resize:vertical}.feedback-details .btn{margin-top:10px}.feedback-status.success{color:#eee;font-weight:800}
@media(max-width:700px){.feedback-sentiment{grid-template-columns:1fr}}


/* ZASU AUDIO Queue Status v1 */
.queue-status{margin-top:12px;padding:13px 14px;border:1px solid #303030;border-radius:13px;background:#0b0b0b;display:flex;justify-content:space-between;gap:14px;align-items:center}
.queue-status[hidden]{display:none}.queue-status>div{display:flex;align-items:baseline;gap:9px;min-width:0}.queue-status span{color:#737373;font-size:8px;font-weight:900;letter-spacing:.13em}.queue-status strong{font-size:15px;letter-spacing:.02em}.queue-status small{color:#858585;font-size:10px;text-align:right}
.queue-status.ready{border-color:#555}.queue-status.processing{border-color:#666;background:#101010}.queue-status.waiting{border-color:#4a4030;background:#100e0a}
@media(max-width:620px){.queue-status{align-items:flex-start;flex-direction:column}.queue-status small{text-align:left}}