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th:nth-child(4){color:var(--thai-red)}.class-sound-table td{vertical-align:middle}.class-sound-table td:first-child{white-space:nowrap}.prose-lesson .class-sound-table td .mini-tile [lang=th]{font-size:1.7rem}.mini-tile{background:var(--card-bg);border:1px solid var(--class-line);min-width:2.4em;height:2.4em;color:var(--class-ink);border-radius:8px;justify-content:center;align-items:center;margin:2px 5px 2px 0;display:inline-flex}.mini-tile [lang=th]{line-height:1}.prose-lesson .class-sound-table td:nth-child(2){background:color-mix(in srgb, #2e6bc4 8%, var(--card-bg))}.prose-lesson .class-sound-table td:nth-child(3){background:color-mix(in srgb, var(--thai-gold) 7%, var(--card-bg))}.prose-lesson .class-sound-table td:nth-child(4){background:color-mix(in srgb, var(--thai-red) 6%, var(--card-bg))}.prose-lesson .class-sound-table th:nth-child(2){border-top:4px solid var(--thai-blue)}.prose-lesson .class-sound-table th:nth-child(3){border-top:4px solid 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[lang=th]{font-size:1.25em;line-height:1.3;display:inline}.vowel-example .whitespace-nowrap{white-space:normal}.vowel-example{flex-direction:column;align-items:center;gap:0;display:flex}.vowel-gloss{color:var(--muted);font-size:12px}.play-tile.vowel-tile{font:inherit;cursor:pointer;width:100%;transition:transform .12s,box-shadow .12s,border-color .12s}.play-tile.vowel-tile:hover{border-color:var(--thai-gold);transform:translateY(-2px);box-shadow:0 3px 8px #0000001f}.play-tile.vowel-tile:focus-visible{outline:2px solid var(--thai-gold);outline-offset:2px}.play-tile.vowel-tile.is-playing{border-color:var(--thai-gold);box-shadow:0 0 0 3px var(--thai-gold-light)}.letter-tile.class-mid,.letter-tile.class-high,.letter-tile.class-low{border-color:var(--class-line)}.letter-tile-sm{border-radius:8px;min-width:2.6rem;padding:2px 4px}.letter-tile-sm [lang=th]{padding-bottom:.15em;font-size:1.5rem;line-height:1.35}.final-letters{flex-wrap:wrap;gap:6px;display:flex}.final-never{border:1px dashed var(--card-border);background:var(--background);border-radius:12px;margin:18px 0;padding:10px 14px 12px}.final-never-head{color:var(--muted);justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:8px;font-weight:700;display:flex}.final-never .letter-tile{opacity:.6}.final-never .letter-tile:hover,.final-never .letter-tile.is-playing{opacity:1}.final-group{border:1px solid var(--card-border);background:var(--card-bg);border-radius:12px;margin:18px 0;padding:12px 14px 6px}.final-closed{border-top:5px solid var(--thai-red)}.final-open{border-top:5px solid var(--thai-blue)}.final-group-head{justify-content:space-between;align-items:center;gap:8px;margin-bottom:6px;display:flex}.final-group-head>span:first-child{font-family:var(--font-fraunces), serif;color:var(--thai-blue);font-size:1.2rem;font-weight:700}.final-row{border-top:1px dashed var(--card-border);grid-template-columns:3.2rem 1fr auto;align-items:center;gap:12px;padding:10px 0;display:grid}.final-group-head+.final-row{border-top:0}.final-sound{text-align:center;border-radius:10px;padding:4px 0;font-size:1.6rem;font-weight:700}.final-closed .final-sound{color:var(--thai-red);background:var(--thai-red-light)}.final-open .final-sound{color:var(--thai-blue);background:var(--accent-light)}.final-example{text-align:right}.final-example [lang=th]{font-size:1.4em;line-height:1.3}@media (max-width:640px){.final-row{grid-template-columns:2.8rem 1fr}.final-example{text-align:left;grid-column:2}}.final-example{line-height:2}.tone-mid{--tone-ink:var(--tone-mid)}.tone-low{--tone-ink:var(--tone-low)}.tone-falling{--tone-ink:var(--tone-falling)}.tone-high{--tone-ink:var(--tone-high)}.tone-rising{--tone-ink:var(--tone-rising)}.tone-cards{grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin:18px 0 26px;display:grid}.tone-card{font:inherit;cursor:pointer;border:1px solid var(--card-border);border-top:5px solid var(--tone-ink);background:var(--card-bg);border-radius:12px;flex-direction:column;align-items:center;gap:4px;padding:12px 6px;transition:transform .12s,box-shadow .12s;display:flex}.tone-card:hover{transform:translateY(-2px);box-shadow:0 3px 8px #0000001f}.tone-card:focus-visible{outline:2px solid var(--tone-ink);outline-offset:2px}.tone-card.is-playing{box-shadow:0 0 0 3px color-mix(in srgb, var(--tone-ink) 30%, transparent)}.tone-card-curve{width:72px;height:36px}.tone-card-name{font-family:var(--font-fraunces), serif;text-transform:capitalize;color:var(--tone-ink);font-size:1.15rem;font-weight:700}.tone-card-mark{color:var(--muted);font-size:.85rem;font-weight:700}.tone-card-word{text-align:center;margin-top:4px;font-size:.85rem;line-height:1.35}.tone-card-word [lang=th]{font-size:1.6rem;line-height:1.3;display:block}.tone-card-word .whitespace-nowrap{white-space:normal}@media (max-width:700px){.tone-cards{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (max-width:420px){.tone-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}.mark-cards{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:16px 0;display:grid}.mark-card{border:1px solid var(--card-border);border-top:5px solid var(--thai-gold);background:var(--card-bg);text-align:center;border-radius:12px;flex-direction:column;align-items:center;gap:6px;padding:12px 8px;display:flex}.mark-card-glyph [lang=th]{font-size:2.6rem;line-height:1.4}.mark-card-name{font-size:.9rem}.mark-card-name [lang=th]{font-size:1.25rem}.mark-card-example{font-size:.85rem;line-height:1.35}.mark-card-example [lang=th]{font-size:1.25rem}.mark-card .whitespace-nowrap{white-space:normal}@media (max-width:640px){.mark-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}.tone-chip{color:var(--tone-ink);border:1px solid var(--tone-ink);background:color-mix(in srgb, var(--tone-ink) 9%, var(--card-bg));white-space:nowrap;border-radius:999px;margin-right:4px;padding:1px 8px;font-size:.8em;font-weight:700;display:inline-block}.prose-lesson .tone-rules-table td:first-child{white-space:nowrap;font-weight:700}.prose-lesson .tone-rules-table tr:first-child td:first-child{color:var(--thai-blue);border-left:4px solid #2e6bc4}.prose-lesson .tone-rules-table tr:nth-child(2) td:first-child{color:var(--thai-gold);border-left:4px solid var(--thai-gold)}.prose-lesson .tone-rules-table tr:nth-child(3) td:first-child{color:var(--thai-red);border-left:4px solid var(--thai-red)}.prose-lesson .tone-rules-table td{vertical-align:middle;line-height:2}.th-stacked{flex-direction:column;align-items:center;line-height:1.3;display:inline-flex}.th-stacked-roman{color:var(--muted);font-size:.8em}.mark-examples-mark{text-align:center;min-width:2.2rem}.mark-examples-mark [lang=th]{color:var(--thai-gold);font-size:1.8rem;line-height:1.3}.prose-lesson .tone-rules-table td,.prose-lesson .tone-rules-table th{text-align:center}.prose-lesson .tone-rules-table td:first-child,.prose-lesson .tone-rules-table th:first-child{text-align:left}.prose-lesson .tone-rules-table th [lang=th]{font-size:1.6rem;line-height:1.2}.prose-lesson .tone-rules-table td{color:var(--muted)}.prose-lesson .tone-rules-table td .tone-chip{margin:0 0 2px}.prose-lesson .tone-rules-table td [lang=th]{color:var(--foreground)}.prose-lesson .tone-rules-table td:first-child{color:inherit}.play-tile.mark-card{font:inherit;cursor:pointer;transition:transform .12s,box-shadow .12s,border-color .12s}.play-tile.mark-card:hover{transform:translateY(-2px);box-shadow:0 3px 8px #0000001f}.play-tile.mark-card:focus-visible{outline:2px solid var(--thai-gold);outline-offset:2px}.play-tile.mark-card.is-playing{box-shadow:0 0 0 3px var(--thai-gold-light);border-color:var(--thai-gold)}.mark-examples .example-row{grid-template-columns:2.4rem max-content 1fr;align-items:center;gap:4px 14px;padding:12px 0;display:grid}.mark-examples .example-row+.example-row{border-top:1px solid color-mix(in srgb, var(--card-border) 45%, transparent)}.mark-examples .example-row>.whitespace-nowrap{flex-direction:row-reverse;align-items:center;gap:6px;display:inline-flex}.mark-examples .example-row>.whitespace-nowrap .audio-play-inline{margin-left:0}@media (max-width:560px){.mark-examples .example-row{grid-template-columns:2.4rem 1fr}.mark-examples .example-row>:last-child{grid-column:2}}.tone-split{flex-wrap:wrap;justify-content:center;gap:18px;display:flex}.tone-split>span{display:inline-block}.mark-examples .example-row>:first-child{min-width:0}.mark-examples .example-row>:last-child [lang=th]{font-size:1.15em;line-height:1.4}.reading-grid{border:1px solid var(--card-border);border-top:5px solid var(--thai-blue);background:var(--card-bg);border-radius:12px;margin:20px 0;padding:12px 12px 14px}.reading-grid-bar{color:var(--muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-bottom:10px;font-size:14px;display:flex}.reading-grid-toggle{font:inherit;color:var(--accent);background:var(--accent-light);border:1px solid var(--card-border);cursor:pointer;border-radius:999px;padding:4px 12px;font-size:13px;font-weight:600}.reading-row{grid-template-columns:repeat(6,minmax(0,1fr));align-items:stretch;gap:6px;display:grid}.reading-row+.reading-row{margin-top:6px}.reading-cell{font:inherit;background:var(--background);border:1px solid var(--card-border);cursor:pointer;border-radius:9px;flex-direction:column;justify-content:center;align-items:center;gap:0;min-width:0;padding:4px 2px 6px;transition:transform .12s,border-color .12s,box-shadow .12s;display:flex}.reading-cell:hover{border-color:var(--thai-blue);transform:translateY(-2px)}.reading-cell:focus-visible{outline:2px solid var(--thai-blue);outline-offset:2px}.reading-cell.is-playing{border-color:var(--thai-blue);box-shadow:0 0 0 3px var(--accent-light)}.reading-cell [lang=th]{color:var(--foreground);font-size:1.7rem;line-height:1.5}.reading-cell small{min-height:1.3em;font-size:13px;font-weight:700}.reading-cell small.reading-hidden{visibility:hidden}@media (max-width:560px){.reading-row{gap:4px}.reading-cell [lang=th]{font-size:1.35rem}.reading-cell small{font-size:11px}}.match-pairs{border:1px solid var(--card-border);border-top:5px solid var(--thai-blue);background:var(--card-bg);border-radius:12px;margin:20px 0;padding:12px 14px 14px}.match-pairs-bar{color:var(--muted);font-size:14px;margin:0 0 10px!important}.match-cols{grid-template-columns:minmax(0,1fr) minmax(0,1.6fr);gap:14px;display:grid}.match-col{align-content:start;gap:8px;display:grid}.match-tile{font:inherit;background:var(--background);border:2px solid var(--card-border);cursor:pointer;border-radius:12px;justify-content:center;align-items:center;gap:10px;min-height:92px;padding:6px 10px;transition:transform .12s,border-color .12s,box-shadow .12s,background .12s;display:flex}.match-tile:hover:not(:disabled){border-color:var(--thai-blue);transform:translateY(-2px)}.match-tile:focus-visible{outline:2px solid var(--thai-blue);outline-offset:2px}.match-letter [lang=th]{color:var(--class-ink);font-size:2.6rem;line-height:1.3}.match-picture{justify-content:flex-start}.match-picture img{border-radius:10px;flex:none;width:76px;height:76px}.match-tile.is-picked{border-color:var(--thai-gold);box-shadow:0 0 0 3px var(--thai-gold-light);background:var(--card-bg)}.match-tile.is-wrong{border-color:var(--thai-red);background:var(--thai-red-light);animation:.3s match-shake}.match-tile.is-matched{border-color:var(--tone-high);background:color-mix(in srgb, var(--tone-high) 10%, var(--card-bg));cursor:default}.match-picture.is-matched{cursor:pointer}.match-letter.is-matched{opacity:.55}.match-name{text-align:left;flex-wrap:wrap;align-items:baseline;gap:6px;font-size:14px;line-height:1.4;display:flex}.match-name [lang=th]{font-size:1.25rem}.match-name-letter{color:var(--thai-blue);font-weight:700;font-size:1.6rem!important}.match-pairs-foot{color:var(--muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-top:12px;font-size:14px;display:flex}.match-done{color:var(--tone-high);font-weight:600}@keyframes match-shake{25%{transform:translate(-4px)}75%{transform:translate(4px)}}@media (max-width:560px){.match-tile{min-height:76px}.match-picture img{width:60px;height:60px}.match-name{font-size:12px}}.prose-lesson .letter-name-table table{display:table}.prose-lesson .letter-name-table td{vertical-align:middle}.prose-lesson .letter-name-table td .mini-tile [lang=th]{font-size:1.7rem}@media (max-width:560px){.prose-lesson .letter-name-table th,.prose-lesson .letter-name-table td{padding:.35rem .4rem}.prose-lesson .letter-name-table td:nth-child(3) .whitespace-nowrap{white-space:normal}.prose-lesson .letter-name-table .mini-tile{margin-right:0}}