.tone-curve-button{background:transparent;border:0;padding:0;margin:0;display:block;width:100%;cursor:pointer;border-radius:var(--radius-sm)}.tone-curve-button:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.tone-contour-path{transition:fill .3s ease}.tone-contour-path[data-active=false]{fill:var(--color-text-tertiary);opacity:.9}.tone-contour-path[data-active=true]{fill:var(--color-accent-fill)}@media (hover:hover){.tone-curve-button:hover .tone-contour-path[data-active=false]{fill:var(--color-text-secondary);transition-duration:.14s}}.tone-panel-heading{transition:color .3s ease}.tone-panel-heading[data-active=false]{color:var(--color-text-primary)}.tone-panel-heading[data-active=true]{color:var(--color-accent)}.tone-room-stack{display:block;width:100%;max-width:1080px;margin:0 auto;padding:0 var(--space-6)}.tone-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--space-5);width:100%}.tone-room-intro{max-width:none;margin:0}.tone-room-cta,.tone-room-intro{padding:0 0 var(--space-8) 0;text-align:left}.tone-room-cta{display:flex;flex-direction:column;align-items:flex-start;gap:var(--space-2);width:100%}.tone-room-cta-btn{display:inline-block;padding:var(--space-3) var(--space-6);background:var(--color-accent-fill);color:var(--color-on-accent);border:1px solid var(--color-accent-fill);border-radius:var(--radius-button);font-family:var(--font-english-serif);font-size:15px;letter-spacing:.02em;text-decoration:none;transition:transform .25s var(--ease-standard),box-shadow .25s var(--ease-standard)}.tone-room-cta-btn:hover{transform:translateY(-1px);box-shadow:0 10px 24px color-mix(in srgb,var(--color-accent-fill) 24%,transparent)}.tone-room-cta-btn--secondary{background:transparent;color:var(--color-accent-text);border:1px solid var(--color-accent)}.tone-room-cta-btn--secondary:hover{background:color-mix(in srgb,var(--color-accent) 8%,transparent);border-color:var(--color-accent);color:var(--color-accent)}.tone-room-cta-btn--derive{background:var(--color-status-known);border-color:var(--color-status-known);color:var(--color-on-accent)}.tone-room-cta-btn--derive:hover{box-shadow:0 10px 24px color-mix(in srgb,var(--color-status-known) 24%,transparent)}.tone-room-cta-hint{font-family:var(--font-english-serif);font-style:italic;font-size:13px;color:var(--color-text-tertiary);max-width:240px;line-height:1.5}.tone-room-cta-row{gap:var(--space-5);width:100%}.tone-room-cta-item,.tone-room-cta-row{display:flex;flex-direction:column;align-items:flex-start}.tone-room-cta-item{gap:var(--space-2);text-align:left}@media (min-width:600px){.tone-room-cta-row{flex-direction:row;justify-content:flex-start;align-items:flex-start;gap:var(--space-8)}}.mt-wrap{display:block;width:100%}.mt-voicebar{display:flex;align-items:center;gap:var(--space-3);margin-top:var(--space-8);flex-wrap:wrap}.mt-voice-label{font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:var(--letter-spacing-eyebrow);text-transform:uppercase;color:var(--color-text-tertiary);margin-right:var(--space-2)}.mt-vchip{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);border:1px solid var(--color-border-strong);border-radius:var(--radius-round);background:transparent;color:var(--color-text-secondary);font-family:var(--font-english);font-size:var(--text-sm);cursor:pointer;transition:background .14s ease,color .14s ease,border-color .14s ease}.mt-vchip:hover{border-color:var(--color-text-tertiary);color:var(--color-text-primary)}.mt-vchip-th{font-size:var(--text-xs);color:var(--color-text-tertiary)}.mt-vchip[aria-pressed=true]{background:var(--color-text-primary);color:var(--color-bg);border-color:var(--color-text-primary)}.mt-vchip[aria-pressed=true] .mt-vchip-th{color:color-mix(in srgb,var(--color-bg) 70%,transparent)}.mt-constellation{margin-top:var(--space-8);background:var(--color-bg-raised);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-8) var(--space-8) var(--space-6);box-shadow:var(--shadow-lg)}.mt-const-cap{display:flex;align-items:baseline;justify-content:space-between;gap:var(--space-4);margin-bottom:var(--space-4);flex-wrap:wrap}.mt-const-lead{font-family:var(--font-reading);font-style:italic;font-size:var(--text-base);color:var(--color-text-secondary)}.mt-const-meta{font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:var(--letter-spacing-eyebrow);text-transform:uppercase;color:var(--color-text-tertiary);white-space:nowrap}.mt-const-meta.is-live{color:var(--color-accent-text);letter-spacing:0;text-transform:none}.mt-const-meta.is-live.is-muted{color:var(--color-text-tertiary)}.mt-const-frame{position:relative;width:100%}.mt-const-svg{display:block;width:100%;height:auto}.mt-const-hint{margin:var(--space-2) 0 0;font-family:var(--font-reading);font-style:italic;font-size:var(--text-sm);color:var(--color-text-tertiary);text-align:center}.mt-rows{margin-top:var(--space-10)}.mt-row{display:grid;grid-template-columns:8.5rem 7rem 1fr auto 11rem;align-items:center;gap:var(--space-5);padding:var(--space-5) var(--space-4);border-top:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:background .15s ease}.mt-row:hover,.mt-row[data-selected=true]{background:var(--color-bg-subtle)}.mt-row[data-selected=true] .mt-row-name b{color:var(--color-accent-text)}.mt-row-name{display:flex;flex-direction:column}.mt-row-name b{font-family:var(--font-display);font-weight:500;font-size:var(--text-lg);color:var(--color-text-primary)}.mt-row-th{font-size:var(--text-xs);color:var(--color-text-tertiary)}.mt-row-glyph{height:3rem;width:100%}.mt-row-teach{font-family:var(--font-reading);font-size:var(--text-base);line-height:1.4;color:var(--color-text-secondary)}.mt-anchor{color:var(--color-text-primary);font-style:italic}.mt-anchor-word{font-style:normal;margin-right:var(--space-1);font-size:1.125rem;color:var(--color-text-thai)}.mt-listen{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-4) var(--space-2) var(--space-2);border:1px solid var(--color-border-strong);border-radius:var(--radius-round);background:var(--color-bg-raised);color:var(--color-text-primary);font-family:var(--font-english);font-size:var(--text-sm);cursor:pointer;justify-self:start;transition:border-color .14s ease}.mt-listen:hover{border-color:var(--color-text-tertiary)}.mt-listen-disc{flex:none;width:1.875rem;height:1.875rem;border-radius:var(--radius-round);background:var(--color-accent-fill);color:var(--color-on-accent);display:flex;align-items:center;justify-content:center;font-size:var(--text-xs)}.mt-listen-staff{display:flex;gap:2px;align-items:center;height:1.125rem}.mt-listen-staff i{width:2.5px;height:45%;border-radius:2px;background:var(--color-text-tertiary);opacity:.5}.mt-listen-staff i:nth-child(3n+1){height:72%}.mt-listen-staff i:nth-child(3n+2){height:100%}.mt-listen-staff i:nth-child(4n){height:58%}.mt-compare{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-4);border:1px dashed var(--color-border-strong);border-radius:var(--radius-round);background:transparent;color:var(--color-text-secondary);font-family:var(--font-english);font-size:var(--text-xs);cursor:pointer;justify-self:start;transition:border-color .14s ease,color .14s ease}.mt-compare:hover{border-color:var(--color-text-tertiary);color:var(--color-text-primary)}.mt-compare b{color:var(--color-text-primary);font-weight:500}.mt-compare-swap{color:var(--color-accent-text)}.mt-footnote{margin-top:var(--space-12);padding-top:var(--space-6);border-top:1px solid var(--color-border);font-family:var(--font-reading);font-size:var(--text-base);color:var(--color-text-tertiary);display:flex;align-items:center;gap:var(--space-3)}.mt-footmini{display:inline-flex;gap:var(--space-2);flex:none}.mt-footmini svg{width:34px;height:18px}@media (max-width:820px){.mt-row{grid-template-columns:1fr auto;grid-template-areas:"name glyph" "teach teach" "listen compare";row-gap:var(--space-3)}.mt-row-name{grid-area:name}.mt-row-glyph{grid-area:glyph}.mt-row-teach{grid-area:teach}.mt-listen{grid-area:listen}.mt-compare{grid-area:compare}}.td-shell{width:100%;max-width:640px;margin:0 auto;min-height:calc(100dvh - var(--nav-height));padding:var(--space-6) var(--space-4) var(--space-10);display:flex;flex-direction:column}.td-prompt{margin:0;text-align:center;font-family:var(--font-reading);font-size:1.1rem;color:var(--color-text-secondary)}.td-options{display:grid;gap:var(--space-3);width:100%}.td-options--two{grid-template-columns:1fr 1fr}.td-options--five{grid-template-columns:repeat(5,1fr)}@media (max-width:560px){.td-options--five{grid-template-columns:1fr 1fr}}.td-option-btn{position:relative;display:flex;flex-direction:column;align-items:center;gap:var(--space-1);padding:var(--space-5) var(--space-3);background:var(--color-bg-raised);border:1px solid var(--color-border-strong);border-radius:var(--radius-lg);cursor:pointer;transition:background .15s ease,border-color .15s ease,opacity .2s ease}.td-option-btn:hover:not(:disabled){border-color:var(--color-text-tertiary)}.td-option-en{display:block;font-family:var(--font-display);font-size:var(--text-lg);font-weight:500;color:var(--color-text-primary)}.td-option-th{font-size:var(--text-sm);color:var(--color-text-secondary)}.td-option-mark{display:block;min-height:1em;line-height:1;margin-top:var(--space-1);font-size:var(--text-base)}.td-option-btn[data-variant=correct]{border-color:var(--color-success);background:color-mix(in srgb,var(--color-success) 12%,var(--color-bg-raised))}.td-option-btn[data-variant=correct] .td-option-mark{color:var(--color-success)}.td-option-btn[data-variant=wrong]{border-color:var(--color-accent);background:color-mix(in srgb,var(--color-accent) 10%,var(--color-bg-raised))}.td-option-btn[data-variant=wrong] .td-option-mark{color:var(--color-accent-text)}.td-option-btn[data-variant=muted]{opacity:.4}.td-rail{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-4) var(--space-1) var(--space-3);border-bottom:.5px solid var(--color-border)}.td-back{font-family:var(--font-english);font-size:12.5px;color:var(--color-text-secondary);text-decoration:none}.td-back:hover{color:var(--color-text-primary)}.td-counter{flex:1;text-align:center;font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--color-text-tertiary)}.td-counter b{color:var(--color-accent-text);font-weight:500}.td-card{flex:1;justify-content:center;gap:var(--space-5);width:100%;max-width:560px;margin:0 auto;padding:var(--space-8) 0;text-align:center}.td-card,.td-replay-row{display:flex;flex-direction:column;align-items:center}.td-replay-row{gap:var(--space-2)}.td-replay-btn{font-family:var(--font-english);font-size:15px;font-weight:600;color:var(--color-accent-text);background:transparent;border:1px solid var(--color-accent);padding:14px 28px;border-radius:var(--radius-round);cursor:pointer;display:inline-flex;align-items:center;gap:10px;transition:background .14s ease}.td-replay-btn:hover{background:color-mix(in srgb,var(--color-accent) 8%,transparent)}.td-replay-btn[data-loading=true]{cursor:progress;opacity:.65}.td-replay-btn[data-loading=true] .td-wave i{animation-duration:.6s}@media (prefers-reduced-motion:reduce){.td-replay-btn[data-loading=true]{opacity:.5}}.td-wave{display:inline-flex;gap:3px;align-items:center;height:16px}.td-wave i{width:2px;height:5px;background:var(--color-accent-text);border-radius:2px;animation:td-wave-bar 1s cubic-bezier(.2,.7,.2,1) infinite}@keyframes td-wave-bar{0%,to{height:5px}50%{height:15px}}.td-replay-btn:disabled .td-wave i,.td-wave--static i{animation:none;height:10px}@media (prefers-reduced-motion:reduce){.td-wave i{animation:none;height:10px}}.td-replay-hint{font-family:var(--font-english-serif);font-style:italic;font-size:12px;color:var(--color-text-tertiary)}.tp-intro{flex:none;margin:auto;width:100%;max-width:560px;gap:0;justify-content:flex-start;border:1px solid var(--color-border);border-radius:var(--radius-card);background:var(--color-bg-raised);padding:clamp(28px,4vw,44px);text-align:center}.tp-eyebrow{margin:0 0 var(--space-4);font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--color-text-tertiary)}.tp-h{margin:0;font-family:var(--font-display);font-size:clamp(1.9rem,3.4vw,2.4rem);font-weight:400;letter-spacing:-.015em;color:var(--color-text-primary)}.tp-p{margin:var(--space-4) auto 0;font-family:var(--font-reading);font-size:1.05rem;line-height:1.6;color:var(--color-text-secondary);max-width:42ch}.tp-intro .td-next-btn,.tp-meta{margin-top:var(--space-6)}.tp-meta{display:flex;justify-content:center;gap:var(--space-6);flex-wrap:wrap}.tp-meta-item{text-align:center}.tp-meta-num{display:block;font-family:var(--font-display);font-size:1.3rem;color:var(--color-text-primary);font-variant-numeric:tabular-nums}.tp-meta-label{font-family:var(--font-mono);font-size:9px;letter-spacing:.1em;text-transform:uppercase;color:var(--color-text-tertiary)}.tp-progress{width:100%;max-width:320px;margin:0 auto;display:flex;flex-direction:column;gap:var(--space-2)}.tp-progress-label{font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--color-text-tertiary);text-align:center}.tp-progress-bar{height:2px;background:var(--color-border);border-radius:2px;overflow:hidden}.tp-progress-bar>span{display:block;height:100%;background:var(--color-accent);transition:width .2s ease}.tp-readout{align-items:center;text-align:center}.tp-summary{font-family:var(--font-reading);font-size:15px;line-height:1.55;color:var(--color-text-secondary);text-align:center;max-width:44ch}.tp-leaders,.tp-summary{margin:0;align-self:center}.tp-leaders{display:flex;flex-direction:column;gap:0;width:100%;max-width:520px;padding-top:var(--space-4);border-top:1px solid var(--color-border)}.tp-leader-row{display:flex;align-items:center;gap:var(--space-3);padding:9px 0;border-bottom:1px solid var(--color-border)}.tp-leader-row:last-child{border-bottom:0}.tp-leader-label{font-family:var(--font-english);font-size:13px;color:var(--color-text-primary);min-width:120px;text-align:left}.tp-leader-meter{flex:1;height:5px;background:var(--color-border);border-radius:3px;overflow:hidden}.tp-leader-meter>span{display:block;height:100%;background:var(--color-accent);border-radius:3px}.tp-leader-value{font-family:var(--font-display);font-size:.9rem;font-variant-numeric:tabular-nums;color:var(--color-text-secondary);min-width:38px;text-align:right}.tp-leaders .tp-leader-row:first-child .tp-leader-label,.tp-leaders .tp-leader-row:first-child .tp-leader-value{color:var(--color-accent-text);font-weight:500}.tp-readout-ctas{display:flex;flex-direction:column;align-items:center;gap:var(--space-3);margin-top:var(--space-3)}@media (min-width:480px){.tp-readout-ctas{flex-direction:row;gap:var(--space-5)}}.td-next-btn{align-self:center;font-family:var(--font-english);font-size:var(--text-sm);font-weight:600;color:var(--color-on-accent);background:var(--color-accent-fill);border:1px solid var(--color-accent-fill);padding:var(--space-3) var(--space-6);border-radius:var(--radius-round);cursor:pointer;transition:background .14s ease}.td-next-btn:hover{background:var(--color-accent-strong)}.td-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-4);text-align:center;padding:var(--space-8) var(--space-4)}.td-empty-eyebrow{margin:0;font-family:var(--font-mono);font-size:var(--text-xs);letter-spacing:var(--letter-spacing-eyebrow);text-transform:uppercase;color:var(--color-text-tertiary)}.td-empty-title{font-size:var(--text-xl);font-weight:500;color:var(--color-text-primary);letter-spacing:-.01em}.td-empty-body,.td-empty-title{margin:0;font-family:var(--font-english-serif)}.td-empty-body{max-width:42ch;font-size:var(--text-sm);line-height:1.55;color:var(--color-text-secondary)}.td-empty-link{font-family:var(--font-english-serif);font-size:var(--text-sm);color:var(--color-accent-text);text-decoration:none;background:transparent;border:0;padding:0;cursor:pointer}.td-empty-link:hover{text-decoration:underline}.td-gear{font-family:var(--font-english);font-size:12.5px;color:var(--color-text-secondary);background:transparent;border:0;padding:var(--space-2) var(--space-2);cursor:pointer;border-radius:var(--radius-sm);line-height:1}.td-gear:hover{color:var(--color-text-primary)}.td-scrim{position:fixed;inset:0;background:var(--color-backdrop-scrim);z-index:15;opacity:0;pointer-events:none;transition:opacity .25s ease}.td-scrim[data-open=true]{opacity:1;pointer-events:auto}.td-drawer{position:fixed;top:0;right:0;height:100dvh;width:min(400px,90vw);background:var(--color-bg-raised);border-left:1px solid var(--color-border);box-shadow:var(--shadow-lg);z-index:20;transform:translateX(100%);transition:transform .28s cubic-bezier(.2,.7,.2,1);display:flex;flex-direction:column;overflow-y:auto}.td-drawer[data-open=true]{transform:none}@media (prefers-reduced-motion:reduce){.td-drawer,.td-scrim{transition:none}}.td-drawer-head{display:flex;align-items:center;justify-content:space-between;padding:var(--space-5) var(--space-6);border-bottom:1px solid var(--color-border);position:sticky;top:0;background:var(--color-bg-raised);z-index:1}.td-drawer-head h2{font-family:var(--font-display);font-size:1.2rem;font-weight:500;margin:0;color:var(--color-text-primary)}.td-drawer-x{background:none;border:0;font-size:18px;color:var(--color-text-secondary);cursor:pointer;line-height:1;padding:var(--space-1)}.td-drawer-x:hover{color:var(--color-text-primary)}.td-drawer-body{padding:var(--space-2) var(--space-6) var(--space-10)}.td-setgrp{padding:var(--space-5) 0;border-bottom:1px solid var(--color-border)}.td-setgrp:last-child{border-bottom:0}.td-setgrp-l{font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;margin:0 0 4px}.td-setgrp-d,.td-setgrp-l{color:var(--color-text-tertiary)}.td-setgrp-d{font-family:var(--font-reading);font-style:italic;font-size:12.5px;margin:0 0 var(--space-3);max-width:42ch}.td-segsm{display:inline-flex;background:var(--color-bg-subtle);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:2px;gap:2px;flex-wrap:wrap}.td-segsm button{font-family:var(--font-english);font-size:12.5px;padding:7px 13px;border:0;border-radius:6px;background:transparent;color:var(--color-text-secondary);cursor:pointer}.td-segsm button[aria-pressed=true]{background:var(--color-bg-raised);color:var(--color-text-primary);font-weight:500;box-shadow:var(--shadow-sm)}.td-voice-chip{display:inline-flex;align-items:center;font-family:var(--font-english);font-size:12.5px;font-weight:500;padding:7px 14px;border-radius:var(--radius-round);background:var(--color-accent-fill);color:var(--color-on-accent)}.td-voices{display:flex;flex-direction:column;gap:2px}.td-voice-row{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2) 0}.td-voice-play{flex:none;width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--color-accent);border-radius:var(--radius-round);background:transparent;color:var(--color-accent-text);font-size:10px;line-height:1;cursor:pointer;transition:background 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