.mixer-shell { max-width: 1080px; margin: 0 auto 72px; color: var(--ink); }
.mixer-shell * { box-sizing: border-box; }
.mixer-intro { display: flex; align-items: end; justify-content: space-between; gap: 24px; padding: 6px 0 28px; }
.mixer-intro h1 { margin: 10px 0 12px; font-size: clamp(38px, 5vw, 62px); font-weight: 790; line-height: .98; letter-spacing: -.065em; }
.mixer-intro h1 em, .mixer-stage h2 em { color: var(--emerald); font-family: Georgia, serif; font-weight: 500; }
.mixer-intro p { max-width: 540px; color: var(--muted-dark); font-size: 14px; line-height: 1.65; }
.mixer-offline { flex: 0 0 auto; min-height: 44px; padding: 0 16px; border: 1.5px solid var(--line); border-radius: 12px; background: var(--paper); font-size: 12px; font-weight: 750; }
.mixer-offline:hover { border-color: var(--emerald); color: var(--emerald); }
.mixer-tabs { display: flex; gap: 10px; margin-bottom: 12px; }
.mixer-tabs button { min-height: 55px; padding: 0 19px; border: 1.5px solid var(--line); border-radius: 15px; background: var(--paper); color: var(--muted-dark); font-size: 13px; font-weight: 750; transition: background .16s, color .16s, transform .16s; }
.mixer-tabs button:hover { transform: translateY(-2px); }
.mixer-tabs button.is-active { border-color: var(--ink); background: var(--ink); color: white; box-shadow: 0 4px 0 var(--emerald); }
.mixer-tabs span { margin-right: 13px; opacity: .65; font-size: 11px; }
.mixer-volume { display: grid; grid-template-columns: minmax(0, 1fr) minmax(150px, 230px); align-items: center; gap: 10px 18px; min-width: 0; margin-bottom: 12px; padding: 9px 14px; border: 1.5px solid var(--line); border-radius: 13px; background: var(--paper); }
.mixer-volume label { display: flex; align-items: baseline; gap: 9px; color: var(--ink); font-size: 12px; font-weight: 800; }
.mixer-volume output { color: var(--emerald); font-size: 13px; font-weight: 850; }
.mixer-volume p { margin-top: 2px; color: var(--muted-dark); font-size: 11px; line-height: 1.35; }
.mixer-volume input { width: 100%; height: 44px; margin: 0; accent-color: var(--emerald); cursor: pointer; }
.mixer-progress { display: flex; align-items: center; gap: 12px; min-width: 0; margin-bottom: 12px; padding: 11px 14px; border: 1.5px solid #bfd6c8; border-radius: 14px; background: var(--emerald-soft); }
.mixer-progress .coach-avatar { width: 44px; height: 44px; border-radius: 13px; }
.mixer-progress-content { flex: 1; min-width: 0; }
.mixer-progress-content strong { display: block; color: var(--emerald-deep); font-size: 13px; line-height: 1.3; }
.mixer-progress-content p { margin-top: 2px; color: var(--muted-dark); font-size: 11px; line-height: 1.4; }
.mixer-progress-meter { height: 7px; overflow: hidden; margin-top: 8px; border-radius: 999px; background: #ccdfd3; }
.mixer-progress-meter > span { display: block; height: 100%; border-radius: inherit; background: var(--emerald); }
.mixer-lesson-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-bottom: 21px; }
.mixer-lesson-list button { display: flex; min-height: 51px; align-items: center; gap: 10px; padding: 8px 12px; border: 1.5px solid var(--line); border-radius: 12px; background: var(--paper); text-align: left; }
.mixer-lesson-list button:hover { border-color: var(--emerald); }
.mixer-lesson-list button.is-active { border-color: var(--emerald); background: var(--emerald-soft); box-shadow: inset 0 0 0 1px var(--emerald); }
.mixer-lesson-list span { color: var(--emerald); font-size: 10px; font-weight: 850; }
.mixer-lesson-list strong { flex: 1; font-size: 13px; line-height: 1.3; }
.mixer-lesson-list b { color: var(--emerald); }
.mixer-stage { overflow: hidden; padding: 26px 32px 30px; border: 2px solid var(--ink); border-radius: 23px; background: radial-gradient(circle at 90% 20%, #15846d 0, #076853 44%, #064f42 100%); color: white; box-shadow: 0 6px 0 var(--ink); }
.mixer-stage-head { display: flex; justify-content: space-between; gap: 15px; align-items: center; margin-bottom: 22px; }
.mixer-step { color: #c9eee0; font-size: 11px; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }
.mixer-badge { padding: 7px 11px; border: 1px solid #b8dccf; border-radius: 999px; color: #e8fff3; font-size: 11px; font-weight: 750; }
.mixer-stage-grid { display: grid; grid-template-columns: minmax(0, 1fr) 38%; align-items: center; gap: 18px; }
.mixer-stage h2 { max-width: 640px; margin-bottom: 13px; font-size: clamp(31px, 4vw, 48px); line-height: 1.03; letter-spacing: -.055em; }
.mixer-stage h2 em { color: var(--lime); }
.mixer-stage p { max-width: 540px; color: #d4efe3; font-size: 14px; line-height: 1.65; }
.mixer-stage .mixer-stage-instruction { margin-top: 8px; color: #f1ffdc; font-weight: 700; }
.mixer-stage .mixer-technique { max-width: 540px; margin-top: 14px; padding: 11px 13px; border: 1px solid rgba(231,255,218,.34); border-radius: 10px; background: rgba(255,255,255,.08); color: #e3f6e8; font-size: 12px; line-height: 1.5; }
.mixer-technique strong { margin-right: 5px; color: var(--lime); font-size: 10px; letter-spacing: .07em; text-transform: uppercase; }
.mixer-quote { display: grid; gap: 5px; max-width: 480px; margin-top: 22px; padding: 14px 17px; border-left: 3px solid var(--lime); border-radius: 0 10px 10px 0; background: rgba(255,255,255,.1); }
.mixer-quote span { color: #c6eddd; font-size: 10px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.mixer-quote q { font-size: 13px; line-height: 1.5; }
.mixer-wave { display: flex; align-items: center; justify-content: space-around; height: 125px; gap: 5px; padding: 0 15px; border: 1px solid rgba(255,255,255,.18); border-radius: 17px; background: rgba(255,255,255,.07); transform: rotate(-2deg); }
.mixer-wave i { width: 5px; height: 24%; border-radius: 10px; background: var(--lime); opacity: .75; }
.mixer-wave i:nth-child(3n) { height: 73%; }
.mixer-wave i:nth-child(4n) { height: 46%; }
.mixer-wave i:nth-child(5n) { height: 93%; background: #f8fff0; }
.mixer-stage-balance { margin-bottom: 0; background: radial-gradient(circle at 92% 12%, #1a826e, #064f42 65%); }
.mixer-stage-balance h2 { max-width: none; }
.mixer-dialogue-picker { display: grid; grid-template-columns: minmax(130px, 1fr) minmax(220px, 1.5fr); align-items: center; gap: 8px 20px; margin-top: 19px; padding: 17px 20px; border: 1.5px solid var(--line); border-radius: 15px; background: var(--paper); }
.mixer-dialogue-picker label { display: block; font-size: 13px; font-weight: 850; }
.mixer-dialogue-picker p { margin-top: 3px; color: var(--muted-dark); font-size: 11px; line-height: 1.4; }
.mixer-dialogue-picker select { width: 100%; min-height: 43px; padding: 0 12px; border: 1.5px solid var(--line); border-radius: 10px; background: var(--cream); color: var(--ink); font: inherit; font-size: 12px; font-weight: 700; }
.mixer-dialogue-picker .mixer-dialogue-credit { grid-column: 2; margin-top: 0; }
.mixer-card { margin-top: 20px; padding: 25px 28px 28px; border: 1.5px solid var(--line); border-radius: 20px; background: var(--paper); box-shadow: var(--shadow-tight); }
.mixer-card-heading { display: flex; gap: 14px; align-items: start; margin-bottom: 22px; }
.mixer-number { display: grid; flex: 0 0 38px; height: 38px; place-items: center; border: 2px solid var(--ink); border-radius: 11px; background: var(--lime); font-size: 11px; font-weight: 850; }
.mixer-card h3 { font-size: 22px; line-height: 1.1; }
.mixer-card-heading p, .mixer-check p { margin-top: 5px; color: var(--muted-dark); font-size: 13px; line-height: 1.5; }
.mixer-transport { display: flex; gap: 10px; flex-wrap: wrap; }
.mixer-play { display: flex; min-height: 54px; align-items: center; gap: 11px; padding: 0 18px; border: 2px solid var(--ink); border-radius: 13px; background: var(--cream); color: var(--emerald); font-size: 15px; font-weight: 850; box-shadow: 0 3px 0 var(--ink); }
.mixer-play span { color: var(--ink); font-size: 12px; }
.mixer-play:hover:not(:disabled), .mixer-play.is-playing { background: var(--lime); }
.mixer-play:disabled { opacity: .45; box-shadow: none; }
.mixer-stop { min-height: 49px; padding: 0 15px; border: 1.5px solid var(--line); border-radius: 11px; background: white; color: var(--muted-dark); font-size: 12px; font-weight: 750; }
.mixer-hint { margin-top: 16px; color: var(--muted-dark); font-size: 12px; line-height: 1.5; }
.mixer-playback-status { margin-top: 10px; color: var(--emerald-deep); font-size: 12px; font-weight: 750; line-height: 1.4; }
.mixer-playback-status + .mixer-hint { margin-top: 6px; }
.mixer-eq-layout { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: stretch; }
.mixer-frequency { min-width: 0; margin: 0; padding: 0; border: 0; }
.mixer-frequency legend, .mixer-cut label { margin-bottom: 12px; color: var(--ink); font-size: 12px; font-weight: 800; }
.mixer-frequency-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 9px; }
.mixer-frequency-choice { min-height: 52px; border: 1.5px solid var(--line); border-radius: 11px; background: var(--cream); font-size: 17px; font-weight: 800; }
.mixer-frequency-choice small { color: var(--muted); font-size: 10px; font-weight: 650; }
.mixer-frequency-choice:hover { border-color: var(--emerald); }
.mixer-frequency-choice.is-selected { border: 2px solid var(--ink); background: var(--emerald-soft); box-shadow: 0 3px 0 var(--ink); }
.mixer-cut { min-width: 0; padding: 15px 19px; border: 1.5px solid var(--line); border-radius: 14px; background: #f6f5ed; }
.mixer-cut label { display: flex; justify-content: space-between; gap: 10px; }
.mixer-cut output { color: var(--emerald); font-size: 16px; font-weight: 850; }
.mixer-cut input, .mixer-channel input { display: block; width: 100%; height: 44px; margin: 12px 0 0; accent-color: var(--emerald); cursor: pointer; }
.mixer-scale { display: flex; justify-content: space-between; color: var(--muted); font-size: 10px; font-weight: 700; }
.mixer-cut p { margin-top: 18px; color: var(--muted-dark); font-size: 11px; line-height: 1.5; }
.mixer-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.mixer-actions .button:disabled, .mixer-check .button:disabled { opacity: .45; box-shadow: none; transform: none; }
.mixer-feedback { margin-top: 20px; padding: 16px 19px; border-radius: 13px; border: 1px solid #ecc2ac; background: #fff0e8; color: var(--coral-ink); }
.mixer-feedback.is-good { border-color: #a9d7bf; background: var(--emerald-soft); color: var(--emerald-deep); }
.mixer-feedback strong { display: block; font-size: 14px; }
.mixer-feedback p { margin-top: 5px; font-size: 12px; line-height: 1.55; }
.mixer-technique-check { padding: 20px 24px 22px; border-color: #bfd6c8; background: #f5faf4; }
.mixer-technique-head { display: flex; justify-content: space-between; gap: 12px 24px; align-items: end; }
.mixer-technique-kicker { display: block; margin-bottom: 5px; color: var(--emerald); font-size: 10px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.mixer-technique-head h3 { font-size: 19px; }
.mixer-technique-head p { max-width: 270px; color: var(--muted-dark); font-size: 11px; line-height: 1.45; }
.mixer-technique-field { min-width: 0; margin: 17px 0 0; padding: 0; border: 0; }
.mixer-technique-field legend { width: 100%; margin-bottom: 10px; color: var(--ink); font-size: 13px; font-weight: 750; line-height: 1.45; }
.mixer-technique-choices { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 9px; }
.mixer-technique-choice { min-width: 0; min-height: 46px; padding: 10px 12px; border: 1.5px solid var(--line); border-radius: 10px; background: var(--paper); color: var(--ink); font: inherit; font-size: 12px; font-weight: 700; line-height: 1.35; text-align: left; overflow-wrap: anywhere; }
.mixer-technique-choice:hover:not(:disabled), .mixer-technique-choice.is-selected { border-color: var(--emerald); background: var(--emerald-soft); }
.mixer-technique-choice:disabled:not(.is-selected) { opacity: .65; }
.mixer-technique-feedback { margin-top: 12px; padding: 11px 13px; border: 1px solid #ecc2ac; border-radius: 10px; background: #fff0e8; color: var(--coral-ink); }
.mixer-technique-feedback.is-good { border-color: #a9d7bf; background: var(--emerald-soft); color: var(--emerald-deep); }
.mixer-technique-feedback strong { display: block; font-size: 13px; }
.mixer-technique-feedback p { margin-top: 4px; font-size: 12px; line-height: 1.45; }
.mixer-check-limit { display: flex; width: 100%; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 14px 16px; border: 1px solid #ecc2ac; border-radius: 12px; background: #fff0e8; color: var(--coral-ink); }
.mixer-check-limit strong { font-size: 13px; }
.mixer-check-limit p { margin-top: 4px; font-size: 11px; line-height: 1.45; }
.mixer-target { position: relative; display: flex; justify-content: space-between; margin: 0 3px 13px; color: var(--muted); font-size: 10px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.mixer-target-mark { color: var(--emerald); }
.mixer-meter-note { margin: -3px 2px 14px; color: var(--muted-dark); font-size: 11px; line-height: 1.5; }
.mixer-channels { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.mixer-channel { min-width: 0; padding: 19px; border: 1.5px solid var(--line); border-radius: 16px; background: var(--cream); }
.mixer-channel-head { display: flex; align-items: center; gap: 10px; }
.mixer-channel-avatar { display: grid; flex: 0 0 36px; height: 36px; place-items: center; border: 2px solid var(--ink); border-radius: 10px; background: var(--lime); font-size: 13px; font-weight: 850; }
.mixer-channel:nth-child(2) .mixer-channel-avatar { background: #f4dfd2; }
.mixer-channel-avatar.has-portrait { position: relative; overflow: hidden; }
.mixer-channel-avatar.has-portrait img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.mixer-channel-letter { position: absolute; right: 0; bottom: 0; z-index: 1; display: grid; width: 16px; height: 16px; place-items: center; border: 1px solid var(--paper); border-radius: 6px 0 0 0; background: var(--ink); color: var(--paper); font-size: 9px; line-height: 1; }
.mixer-channel-head div { min-width: 0; flex: 1; }
.mixer-channel-head strong, .mixer-channel-head small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mixer-channel-head strong { font-size: 13px; }
.mixer-channel-head small { margin-top: 2px; color: var(--muted); font-size: 10px; }
.mixer-channel-head output { color: var(--emerald); font-size: 15px; font-weight: 850; white-space: nowrap; }
.mixer-estimates { display: grid; gap: 6px; margin-top: 14px; padding: 10px 12px; border: 1px solid #d9ddcf; border-radius: 9px; background: var(--paper); }
.mixer-estimates span { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 4px 10px; color: var(--muted-dark); font-size: 12px; line-height: 1.35; }
.mixer-estimates output { color: var(--ink); font-size: 13px; font-weight: 850; white-space: nowrap; }
.mixer-meter-caption { display: flex; justify-content: space-between; margin-top: 14px; color: var(--muted-dark); font-size: 10px; font-weight: 800; }
.mixer-meter { position: relative; height: 11px; overflow: hidden; margin-top: 5px; border: 1px solid #c9c8bd; border-radius: 999px; background: #dddcd1; }
.mixer-meter i { display: block; width: 0; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #3cb891, var(--lime) 72%, #f5aa60); transition: width .08s linear; }
.mixer-meter b { position: absolute; top: -2px; height: 16px; width: 2px; background: var(--ink); }
.mixer-gain-note { margin-top: 14px; color: var(--muted-dark); font-size: 11px; line-height: 1.5; }
.mixer-transcript { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.mixer-transcript li { display: grid; grid-template-columns: 116px minmax(0,1fr); gap: 12px; padding: 11px 13px; border: 1px solid transparent; border-radius: 10px; background: var(--cream); transition: background .12s, border-color .12s; }
.mixer-transcript li.is-active { border-color: var(--emerald); background: var(--emerald-soft); }
.mixer-transcript span { color: var(--emerald); font-size: 11px; font-weight: 850; }
.mixer-transcript p { font-size: 14px; line-height: 1.55; }
.mixer-check { display: flex; align-items: center; gap: 13px; flex-wrap: wrap; }
.mixer-check > div:first-child { min-width: 200px; flex: 1; }
.mixer-check .mixer-feedback { width: 100%; }
.mixer-footnote { margin-top: 20px; color: var(--muted); font-size: 11px; font-style: italic; text-align: center; }
.mixer-notice { padding: 25px; border: 1.5px solid var(--line); border-radius: 16px; background: var(--paper); color: var(--ink); line-height: 1.5; }
.mixer-notice h2 { font-size: 23px; }
.mixer-notice p { margin: 8px 0 16px; color: var(--muted-dark); }
.mixer-audio-error, .mixer-offline-status { margin: 0 0 16px; padding: 12px 15px; border-radius: 11px; font-size: 12px; line-height: 1.5; }
.mixer-audio-error { background: #fff0e8; color: var(--coral-ink); }
.mixer-offline-status { background: var(--emerald-soft); color: var(--emerald-deep); }
.mixer-visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.mixer-shell button:focus-visible, .mixer-shell input:focus-visible, .mixer-shell select:focus-visible { outline: 3px solid var(--coral-ink); outline-offset: 3px; }

@media (max-width: 760px) {
  .mixer-intro { align-items: start; flex-direction: column; }
  .mixer-stage-grid { grid-template-columns: 1fr; }
  .mixer-wave { display: none; }
  .mixer-eq-layout { grid-template-columns: 1fr; gap: 18px; }
  .mixer-channels { grid-template-columns: 1fr; }
  .mixer-lesson-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mixer-dialogue-picker { grid-template-columns: 1fr; }
  .mixer-dialogue-picker .mixer-dialogue-credit { grid-column: 1; }
  .mixer-dialogue-picker select { min-height: 48px; font-size: 16px; }
  .mixer-technique-head { align-items: start; flex-direction: column; }
  .mixer-technique-head p { max-width: none; }
  .mixer-technique-choices { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .mixer-volume { grid-template-columns: 1fr; gap: 2px; }
  .mixer-stage, .mixer-card { padding: 20px; border-radius: 17px; }
  .mixer-tabs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mixer-tabs button { padding: 8px 10px; font-size: 13px; }
  .mixer-tabs span { margin-right: 5px; }
  .mixer-transport { display: grid; grid-template-columns: 1fr 1fr; }
  .mixer-play { padding: 0 10px; }
  .mixer-transcript li { grid-template-columns: 1fr; gap: 3px; }
  .mixer-lesson-list { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .mixer-shell *, .mixer-shell *::before, .mixer-shell *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}