@font-face{font-family:ChicagoFLF;src:url(/fonts/ChicagoFLF.ttf) format("truetype");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:Charis SIL;src:url(/fonts/Charis-Regular.ttf) format("truetype");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:Charis SIL;src:url(/fonts/Charis-Bold.ttf) format("truetype");font-weight:700;font-style:normal;font-display:swap}@font-face{font-family:Inter;src:url(/fonts/InterVariable.ttf) format("truetype");font-weight:100 900;font-style:normal;font-display:swap}@font-face{font-family:Inter;src:url(/fonts/InterVariable-Italic.ttf) format("truetype");font-weight:100 900;font-style:italic;font-display:swap}@font-face{font-family:"Source Serif 4";src:url(/fonts/SourceSerif4-Regular.ttf) format("truetype");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:"Source Serif 4";src:url(/fonts/SourceSerif4-It.ttf) format("truetype");font-weight:400;font-style:italic;font-display:swap}@font-face{font-family:JetBrains Mono;src:url(/fonts/JetBrainsMono-Regular.ttf) format("truetype");font-weight:400;font-style:normal;font-display:swap}:root{--color-desktop-sand: #E5DAB6;--color-desktop-sand-dark: #C9BE94;--color-window-gray: #C0C0C0;--color-window-gray-light: #DEDEDE;--color-window-gray-dark: #7B7B7B;--color-window-border: #000000;--color-title-active: #7E7E9F;--color-title-inactive: #B6B6B6;--color-surface: #FFFFFF;--color-text-primary: #0E0E0E;--color-text-secondary: #5C5C5C;--color-accent: #F4A12B;--color-accent-dark: #C97D14;--color-success: #2E7D32;--color-error: #B00020;--color-tooltip-bg: #FFF6BF;--font-chrome: "ChicagoFLF", "Geneva", monospace;--font-ipa: "Charis SIL", "Doulos SIL", "Gentium Plus", serif;--font-body: "Inter", sans-serif;--font-keyword: "Source Serif 4", "Charter", serif;--font-mono: "JetBrains Mono", "SF Mono", monospace;--sp-1: 2px;--sp-2: 4px;--sp-3: 8px;--sp-4: 12px;--sp-5: 16px;--sp-6: 24px;--sp-7: 32px;--sp-8: 48px;--cell-size: 46px;--cell-gap: 4px}@media (min-width: 360px){:root{--cell-size: 50px}}@media (min-width: 600px){:root{--cell-size: 56px}}@media (min-width: 1024px){:root{--cell-size: 76px}}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;min-height:100vh;overflow-x:hidden;background-color:var(--color-desktop-sand);background-image:radial-gradient(var(--color-desktop-sand-dark) 1px,transparent 1px);background-size:4px 4px;font-family:var(--font-body);color:var(--color-text-primary)}.window{background:var(--color-window-gray);border:1px solid var(--color-window-border);box-shadow:2px 2px #0006;display:flex;flex-direction:column}.window__title-bar{height:22px;background:var(--color-title-active);border-bottom:1px solid var(--color-window-border);display:flex;align-items:center;justify-content:center;position:sticky;top:0;z-index:2;flex-shrink:0;background-image:repeating-linear-gradient(to bottom,rgba(255,255,255,.18) 0px,rgba(255,255,255,.18) 1px,transparent 1px,transparent 2px)}.window__title{font-family:var(--font-chrome);font-size:14px;font-weight:700;color:var(--color-surface);line-height:1;pointer-events:none}.window__close,.window__copy{position:absolute;width:16px;height:16px;border:1px solid var(--color-window-border);background:var(--color-window-gray);display:flex;align-items:center;justify-content:center;font-size:9px;line-height:1;cursor:pointer;color:var(--color-text-primary);user-select:none}.window__close{left:6px}.window__copy{right:6px;font-size:10px}.window__copy:hover{background:var(--color-window-gray-light)}.window__content{background:var(--color-window-gray);padding:var(--sp-4);flex:1}@media (min-width: 600px){.window__content{padding:var(--sp-5)}}.window__status{height:18px;background:var(--color-window-gray);border-top:1px solid var(--color-window-border);padding:0 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var(--color-accent);outline-offset:2px}.btn:disabled{background:#d8d8d8;color:#999;cursor:not-allowed}.section-label{font-family:var(--font-chrome);font-size:13px;font-weight:700;color:var(--color-text-primary);margin:0 0 var(--sp-2) 0}.btn--primary{background:var(--color-accent);border-top:1px solid #F8C97A;border-left:1px solid #F8C97A;border-bottom:1px solid var(--color-accent-dark);border-right:1px solid var(--color-accent-dark)}.btn--primary:hover{background:#f7b64f}.tab-bar{display:grid;grid-template-columns:repeat(3,1fr);gap:0;background:var(--color-window-gray);border-top:1px solid var(--color-window-border)}.tab-bar__tab{min-height:44px;background:var(--color-window-gray);border:0;border-right:1px solid var(--color-window-border);padding:7px 4px;font-family:var(--font-chrome);font-size:10px;color:var(--color-text-primary);cursor:pointer}@media (min-width: 360px){.tab-bar__tab{min-height:46px;padding:8px 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600px){.phoneme-grid--vowels{grid-template-columns:repeat(7,var(--cell-size))}.phoneme-grid--consonants{grid-template-columns:repeat(8,var(--cell-size))}}.cell{width:var(--cell-size);height:var(--cell-size);background:var(--color-surface);border:1px solid var(--color-window-border);display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;gap:5px;box-shadow:inset 1px 1px 0 var(--color-window-gray-light),inset -1px -1px 0 var(--color-window-gray-dark);user-select:none;-webkit-tap-highlight-color:transparent}.cell:hover{background:#f8f8f8}.cell:active{box-shadow:inset 1px 1px 0 var(--color-window-gray-dark),inset -1px -1px 0 var(--color-window-gray-light)}.cell--selected{background:var(--color-accent);border-width:2px}.cell--selected:hover{background:var(--color-accent)}.cell__glyph{font-family:var(--font-ipa);font-size:24px;line-height:1;padding-bottom:6px;color:var(--color-text-primary)}@media (min-width: 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var(--color-window-border);background:var(--color-surface)}.minimal-pairs__label{font-family:var(--font-chrome);font-size:11px;font-weight:700;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.04em;width:100%}.minimal-pairs__item{font-family:var(--font-keyword);font-size:14px;font-style:italic;color:var(--color-text-primary)}.detail__train-cta{margin-top:var(--sp-4)}.detail__train-note{margin:var(--sp-3) 0 0;font-family:var(--font-body);font-size:12px;color:var(--color-text-secondary);text-align:center}.panel-overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;padding:var(--sp-3);background:#00000014;opacity:0;pointer-events:none;transition:opacity 80ms ease;z-index:12}.panel-overlay.is-open{opacity:1;pointer-events:auto}.panel-window{width:min(460px,calc(100vw - var(--sp-5)));max-height:calc(100vh - var(--sp-5));overflow-y:auto}.panel__body{background:var(--color-surface);padding:var(--sp-5) var(--sp-4)}.panel__hero{display:flex;flex-direction:column;gap:var(--sp-3);margin-bottom:var(--sp-5)}.panel__heading{margin:0;font-family:var(--font-chrome);font-size:18px;color:var(--color-text-primary)}.panel__copy{margin:0;font-family:var(--font-body);font-size:14px;line-height:1.45;color:var(--color-text-primary)}.panel__context{display:flex;flex-direction:column;gap:var(--sp-2)}.panel__context-label{font-family:var(--font-chrome);font-size:11px;color:var(--color-text-secondary);text-transform:uppercase}.panel__context-chip{display:inline-flex;align-self:flex-start;padding:4px 8px;border:1px solid var(--color-window-border);background:var(--color-tooltip-bg);font-family:var(--font-keyword);font-size:14px;color:var(--color-text-primary)}.panel__list{display:grid;gap:var(--sp-2)}.panel__list-item{padding:10px 12px;border:1px solid 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var(--sp-7));max-height:calc(100vh - var(--sp-7) * 2)}.detail__hero{padding:var(--sp-6) var(--sp-5) var(--sp-4)}.detail__glyph{font-size:72px}.panel-window{width:min(460px,calc(100vw - var(--sp-7) * 2));max-height:calc(100vh - var(--sp-7) * 2)}.panel__body{padding:var(--sp-6) var(--sp-5)}}.panel__card{border:1px solid var(--color-window-border);background:var(--color-window-gray-light);padding:var(--sp-4);text-align:left}.panel__card--button{cursor:pointer;font:inherit;color:inherit}.panel__card--button:hover:not(:disabled){background:var(--color-tooltip-bg)}.panel__card--button:disabled{cursor:not-allowed;opacity:.58}.panel__card-title{margin:0 0 var(--sp-2);font-family:var(--font-chrome);font-size:13px;color:var(--color-text-primary)}.panel__card-copy{margin:0;font-family:var(--font-body);font-size:12px;line-height:1.4;color:var(--color-text-secondary)}.panel__meta{display:flex;flex-wrap:wrap;gap:var(--sp-3);margin-top:var(--sp-5);padding-top:var(--sp-4);border-top:1px solid var(--color-window-border);font-family:var(--font-mono);font-size:11px;color:var(--color-text-secondary)}.drill-prompt{display:flex;align-items:center;gap:var(--sp-4);padding:var(--sp-4);border:1px solid var(--color-window-border);background:var(--color-window-gray-light)}.drill-prompt__play{margin-bottom:0}.drill-prompt__meta{font-family:var(--font-mono);font-size:11px;color:var(--color-text-secondary)}.drill-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-3);margin-top:var(--sp-4)}.drill-choices--compact{grid-template-columns:repeat(4,minmax(0,1fr))}@media (max-width: 460px){.drill-choices--compact{grid-template-columns:repeat(2,minmax(0,1fr))}}.drill-choice{min-height:96px;border:1px solid var(--color-window-border);background:var(--color-surface);box-shadow:inset 1px 1px 0 var(--color-window-gray-light),inset -1px -1px 0 var(--color-window-gray-dark);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--sp-2);cursor:pointer}.drill-choice:hover:not(:disabled){background:var(--color-tooltip-bg)}.drill-choice:active:not(:disabled){box-shadow:inset 1px 1px 0 var(--color-window-gray-dark),inset -1px -1px 0 var(--color-window-gray-light)}.drill-choice:disabled{cursor:default}.drill-choice__ipa{font-family:var(--font-ipa);font-size:28px;line-height:1;color:var(--color-text-primary)}.drill-choice__ipa--secondary{font-size:18px;color:var(--color-text-secondary)}.drill-choice__word{font-family:var(--font-keyword);font-size:18px;font-style:italic;color:var(--color-text-primary)}.drill-choice__word--primary{font-size:20px;text-align:center}.symbol-prompt{display:flex;flex-direction:column;align-items:center;gap:var(--sp-3);padding:var(--sp-5) var(--sp-4);border:1px solid var(--color-window-border);background:var(--color-window-gray-light)}.symbol-prompt__glyph{font-family:var(--font-ipa);font-size:64px;line-height:1;color:var(--color-text-primary)}.symbol-prompt__meta{font-family:var(--font-mono);font-size:11px;color:var(--color-text-secondary)}.drill-feedback{display:flex;align-items:center;gap:var(--sp-3);margin-top:var(--sp-4);padding:var(--sp-3) var(--sp-4);border:1px solid 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var(--color-window-border);cursor:pointer;text-align:left}.contrast-option:hover{background:#f4f4f4}.contrast-option--selected{background:#fff4dc;border-color:var(--color-accent)}.contrast-option--selected:hover{background:#ffe8b4}.contrast-option__ipa{font-family:var(--font-ipa);font-size:13px;color:var(--color-text-primary);white-space:nowrap;min-width:90px}.contrast-option__keywords{font-family:var(--font-keyword);font-size:12px;font-style:italic;color:var(--color-text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.contrast-option__count{font-family:var(--font-mono);font-size:11px;color:var(--color-text-secondary);white-space:nowrap}.contrast-option__check{font-size:13px;color:var(--color-text-secondary);width:14px;text-align:center;flex-shrink:0}.contrast-option--selected .contrast-option__check{color:var(--color-accent-dark)}