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th[data-astro-cid-xgwhr3fs][data-active=column]{background:#d9edf5;box-shadow:inset 0 -4px #146c9485,inset 2px 0 #146c9447,inset -2px 0 #146c9447;color:#103f57}.tone-chart__table[data-astro-cid-xgwhr3fs] thead[data-astro-cid-xgwhr3fs] th[data-astro-cid-xgwhr3fs][data-active=column] strong[data-astro-cid-xgwhr3fs]{color:#103f57}.tone-chart__table[data-astro-cid-xgwhr3fs] tr[data-astro-cid-xgwhr3fs][data-active=row]>th[data-astro-cid-xgwhr3fs],.tone-chart__table[data-astro-cid-xgwhr3fs] tr[data-astro-cid-xgwhr3fs][data-active=row]>td[data-astro-cid-xgwhr3fs]{background:#eaf6fa;box-shadow:inset 0 2px #146c9461,inset 0 -2px #146c9461}.tone-chart__table[data-astro-cid-xgwhr3fs] tr[data-astro-cid-xgwhr3fs][data-active=row] .tone-chart__row-heading[data-astro-cid-xgwhr3fs]{background:#dff1f7;box-shadow:inset 4px 0 #146c94ad,inset 0 2px #146c9461,inset 0 -2px #146c9461}.tone-chart__table[data-astro-cid-xgwhr3fs] tr[data-astro-cid-xgwhr3fs][data-active=row] .tone-chart__cell[data-astro-cid-xgwhr3fs]{border-color:#146c943d;box-shadow:inset 0 0 0 2px #146c941a}.tone-chart__cell[data-astro-cid-xgwhr3fs][data-active=true]{border-color:#103f5780;box-shadow:0 0 0 3px #146c9438,inset 0 0 0 2px #103f571f!important}.tone-chart__table[data-astro-cid-xgwhr3fs] [data-astro-cid-xgwhr3fs][data-dimmed=true]{opacity:.38}.tone-chart__clear[data-astro-cid-xgwhr3fs]:focus-visible,.tone-chart__cell[data-astro-cid-xgwhr3fs]:focus-visible,.tone-chart__viewport[data-astro-cid-xgwhr3fs]:focus-visible{outline:3px solid rgba(20,108,148,.24);outline-offset:2px}.tone-chart__detail[data-astro-cid-xgwhr3fs]{background:#f8fbfc;border:1px solid rgba(16,63,87,.12);border-radius:8px;margin-top:12px;padding:14px}.tone-chart__detail-label[data-astro-cid-xgwhr3fs]{color:var(--color-muted);display:block;font-size:.74rem;font-weight:900;letter-spacing:.04em;margin-bottom:6px;text-transform:uppercase}.tone-chart__detail[data-astro-cid-xgwhr3fs] h3[data-astro-cid-xgwhr3fs]{margin:0 0 5px}@media(max-width:720px){.tone-chart__panel[data-astro-cid-xgwhr3fs]{padding:14px}.tone-chart__toolbar[data-astro-cid-xgwhr3fs]{align-items:flex-start;flex-direction:column}}.vowel-practice[data-astro-cid-f4ylbsnz]{margin:34px 0}.vowel-practice__heading[data-astro-cid-f4ylbsnz]{margin-bottom:16px}.vowel-practice__heading[data-astro-cid-f4ylbsnz] h2[data-astro-cid-f4ylbsnz]{margin-bottom:8px}.vowel-practice__heading[data-astro-cid-f4ylbsnz] p[data-astro-cid-f4ylbsnz]:last-child,.interactive-card[data-astro-cid-f4ylbsnz] p[data-astro-cid-f4ylbsnz]{color:var(--color-muted);margin:0}.interactive-card[data-astro-cid-f4ylbsnz]{border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface);padding:20px}.interactive-card[data-astro-cid-f4ylbsnz]+.interactive-card[data-astro-cid-f4ylbsnz]{margin-top:14px}.interactive-card__top[data-astro-cid-f4ylbsnz]{align-items:flex-start;display:flex;gap:14px;justify-content:space-between;margin-bottom:16px}.interactive-card[data-astro-cid-f4ylbsnz] h3[data-astro-cid-f4ylbsnz]{margin:0 0 6px}.mini-button[data-astro-cid-f4ylbsnz]{border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface-raised);color:var(--color-text);cursor:pointer;font:inherit;font-weight:800;min-height:40px;padding:0 12px;white-space:nowrap}.vowel-position-grid[data-astro-cid-f4ylbsnz],.pattern-grid[data-astro-cid-f4ylbsnz]{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}.length-pair-grid[data-astro-cid-f4ylbsnz]{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:10px}.vowel-position-card[data-astro-cid-f4ylbsnz],.length-card[data-astro-cid-f4ylbsnz]{appearance:none;border:1px solid var(--color-border);border-radius:8px;background:linear-gradient(180deg,#fff,#f8fbfc);color:var(--color-text);cursor:pointer;font:inherit;text-align:center}.vowel-position-card[data-astro-cid-f4ylbsnz]{display:grid;gap:6px;min-height:150px;padding:14px}.vowel-position-card__display[data-astro-cid-f4ylbsnz],.length-card__display[data-astro-cid-f4ylbsnz],.length-pair-card[data-astro-cid-f4ylbsnz] span[data-astro-cid-f4ylbsnz]{color:#103f57;display:block;font-family:Noto Sans Thai,Thonburi,Leelawadee UI,Tahoma,sans-serif;font-size:2.8rem;font-weight:850;line-height:1}.vowel-position-card__arrow[data-astro-cid-f4ylbsnz]{color:var(--color-muted);font-weight:850}.vowel-position-card__example[data-astro-cid-f4ylbsnz]{font-family:Noto Sans Thai,Thonburi,Leelawadee UI,Tahoma,sans-serif;font-size:1.55rem;font-weight:850;line-height:1}.vowel-position-card__meta[data-astro-cid-f4ylbsnz],.length-card__hint[data-astro-cid-f4ylbsnz],.length-pair-card[data-astro-cid-f4ylbsnz] small[data-astro-cid-f4ylbsnz],.pattern-card[data-astro-cid-f4ylbsnz] p[data-astro-cid-f4ylbsnz]{color:var(--color-muted);font-size:.86rem;font-weight:750}.length-stage[data-astro-cid-f4ylbsnz]{align-items:center;display:grid;grid-template-columns:180px minmax(0,1fr);gap:18px}.length-card[data-astro-cid-f4ylbsnz]{min-height:170px;padding:18px}.length-card__display[data-astro-cid-f4ylbsnz]{font-size:4rem}.length-card__example[data-astro-cid-f4ylbsnz]{display:block;font-family:Noto Sans Thai,Thonburi,Leelawadee UI,Tahoma,sans-serif;font-size:1.8rem;font-weight:850;margin-top:10px}.length-card__hint[data-astro-cid-f4ylbsnz]{display:block;margin-top:4px}.length-stage__meta[data-astro-cid-f4ylbsnz]{display:grid;gap:6px}.length-stage__meta[data-astro-cid-f4ylbsnz] strong[data-astro-cid-f4ylbsnz]{font-size:1.5rem}.length-stage__meta[data-astro-cid-f4ylbsnz] span[data-astro-cid-f4ylbsnz]{color:var(--color-muted)}.length-buttons[data-astro-cid-f4ylbsnz]{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:16px}.length-button[data-astro-cid-f4ylbsnz]{border:1px solid rgba(16,63,87,.22);border-radius:8px;background:#eef6fb;color:#103f57;cursor:pointer;font:inherit;font-size:1.08rem;font-weight:900;min-height:58px;padding:10px}.length-pair-card[data-astro-cid-f4ylbsnz],.pattern-card[data-astro-cid-f4ylbsnz]{border:1px solid var(--color-border);border-radius:8px;background:var(--color-soft);padding:14px}.length-pair-card[data-astro-cid-f4ylbsnz]{display:grid;gap:10px;grid-template-columns:1fr 1fr}.length-pair-card[data-astro-cid-f4ylbsnz] div[data-astro-cid-f4ylbsnz]{min-width:0}.length-pair-card[data-astro-cid-f4ylbsnz] span[data-astro-cid-f4ylbsnz]{font-size:2.35rem;overflow-wrap:normal;white-space:nowrap;word-break:keep-all}.length-pair-card[data-astro-cid-f4ylbsnz] strong[data-astro-cid-f4ylbsnz]{border-top:1px solid var(--color-border);grid-column:1 / -1;padding-top:10px}.pattern-card[data-astro-cid-f4ylbsnz]{display:grid;gap:8px}.pattern-card__forms[data-astro-cid-f4ylbsnz]{align-items:center;display:flex;flex-wrap:wrap;gap:8px}.pattern-card__forms[data-astro-cid-f4ylbsnz] span[data-astro-cid-f4ylbsnz]{font-family:Noto Sans Thai,Thonburi,Leelawadee UI,Tahoma,sans-serif;font-size:1.35rem;font-weight:850}@media(max-width:720px){.length-stage[data-astro-cid-f4ylbsnz]{grid-template-columns:1fr}.interactive-card__top[data-astro-cid-f4ylbsnz]{flex-direction:column}}.lesson[data-astro-cid-bzovgbji]{padding:42px 0 28px}.breadcrumb[data-astro-cid-bzovgbji]{color:var(--color-muted);display:flex;gap:8px;font-size:.9rem;font-weight:700;margin-bottom:38px}.breadcrumb[data-astro-cid-bzovgbji] a[data-astro-cid-bzovgbji]{color:var(--color-muted);text-decoration:none}article[data-astro-cid-bzovgbji]{min-width:0}.lesson-layout[data-astro-cid-bzovgbji]{display:grid;grid-template-columns:minmax(0,780px) 260px;gap:34px;align-items:start}.lesson-sidebar[data-astro-cid-bzovgbji]{position:sticky;top:98px}.lesson__mobile-promo[data-astro-cid-bzovgbji]{display:none;margin:0 0 22px}.lesson__header[data-astro-cid-bzovgbji]{margin-bottom:38px}.eyebrow[data-astro-cid-bzovgbji]{color:var(--color-warm);font-size:.88rem;font-weight:800;margin:0 0 12px;text-transform:uppercase}h1[data-astro-cid-bzovgbji]{font-size:clamp(2.4rem,7vw,4.8rem);line-height:1;letter-spacing:0;margin:0 0 18px}.lesson__header[data-astro-cid-bzovgbji] p[data-astro-cid-bzovgbji]{color:var(--color-muted);font-size:1.14rem;margin:0}h2[data-astro-cid-bzovgbji]{font-size:1.38rem;line-height:1.25;letter-spacing:0;margin:0 0 16px}h3[data-astro-cid-bzovgbji]{font-size:1.08rem;line-height:1.35;letter-spacing:0;margin:0 0 8px}.panel[data-astro-cid-bzovgbji],.idea[data-astro-cid-bzovgbji],.reference-card[data-astro-cid-bzovgbji],.drill-card[data-astro-cid-bzovgbji]{border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface);padding:20px}.tool-callout[data-astro-cid-bzovgbji]{align-items:center;background:var(--color-surface-raised);border:1px solid var(--color-border);border-radius:8px;display:flex;gap:18px;justify-content:space-between;margin-bottom:18px;padding:18px}.tool-callout[data-astro-cid-bzovgbji] h2[data-astro-cid-bzovgbji]{font-size:1.2rem;margin-bottom:6px}.tool-callout[data-astro-cid-bzovgbji] p[data-astro-cid-bzovgbji]:last-child{color:var(--color-muted);margin:0}.tool-callout[data-astro-cid-bzovgbji] a[data-astro-cid-bzovgbji]{align-items:center;background:var(--color-accent);border-radius:8px;color:#fff;display:inline-flex;flex:0 0 auto;font-weight:800;justify-content:center;min-height:44px;padding:0 16px;text-decoration:none}.panel--soft[data-astro-cid-bzovgbji]{background:var(--color-soft);margin-top:14px}.panel[data-astro-cid-bzovgbji] ul[data-astro-cid-bzovgbji],.panel[data-astro-cid-bzovgbji] ol[data-astro-cid-bzovgbji]{margin:0;padding-left:1.25rem}li[data-astro-cid-bzovgbji]{margin-bottom:8px}.ideas[data-astro-cid-bzovgbji]{margin:34px 0}.ideas[data-astro-cid-bzovgbji]>h2[data-astro-cid-bzovgbji]{margin-bottom:14px}.idea[data-astro-cid-bzovgbji]+.idea[data-astro-cid-bzovgbji]{margin-top:12px}.idea[data-astro-cid-bzovgbji] p[data-astro-cid-bzovgbji]{color:var(--color-muted);margin:0}.idea__note[data-astro-cid-bzovgbji]{border-left:3px solid rgba(16,63,87,.28);margin-top:14px!important;padding-left:12px}.examples[data-astro-cid-bzovgbji]{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:16px 0 0;padding:0}.examples[data-astro-cid-bzovgbji] li[data-astro-cid-bzovgbji]{border:1px solid var(--color-border);border-radius:8px;margin:0;padding:8px 10px;background:var(--color-soft);color:var(--color-text);font-weight:700}.examples--cards[data-astro-cid-bzovgbji]{display:grid;background:#fff;border:1px solid rgba(16,63,87,.14);border-radius:8px;gap:0;overflow:hidden}.examples--cards[data-astro-cid-bzovgbji] li[data-astro-cid-bzovgbji]{padding:0}.example-card[data-astro-cid-bzovgbji]{align-items:center;background:#fff!important;border:0!important;border-radius:0!important;border-top:1px solid rgba(16,63,87,.1)!important;box-shadow:none;display:grid;gap:12px;grid-template-columns:88px minmax(220px,.95fr) minmax(0,1fr);min-height:0;padding:12px 14px!important}.example-card[data-astro-cid-bzovgbji]:first-child{border-top:0!important}.example-card--compact[data-astro-cid-bzovgbji]{grid-template-columns:88px minmax(0,1fr)}.example-card__label[data-astro-cid-bzovgbji]{color:color-mix(in srgb,var(--color-muted) 88%,var(--color-text));font-size:.72rem;font-weight:900;letter-spacing:.02em;text-transform:uppercase}.example-card__cells[data-astro-cid-bzovgbji]{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0}.example-card__cell[data-astro-cid-bzovgbji]{background:transparent;border-left:1px solid rgba(16,63,87,.1);display:grid;gap:4px;min-width:0;padding:4px 14px}.example-card__cell[data-astro-cid-bzovgbji]:first-child{border-left:0;padding-left:0}.example-card__cell[data-astro-cid-bzovgbji]:last-child{text-align:right}.example-card__cell--result[data-astro-cid-bzovgbji]{justify-items:end;text-align:right}.example-card__cell-label[data-astro-cid-bzovgbji]{color:var(--color-muted);font-size:.72rem;font-weight:850;text-transform:uppercase}.example-card__cell[data-astro-cid-bzovgbji] strong[data-astro-cid-bzovgbji],.example-card__detail[data-astro-cid-bzovgbji]{font-family:Noto Sans Thai,Thonburi,Leelawadee UI,Tahoma,sans-serif}.example-card__cell[data-astro-cid-bzovgbji] strong[data-astro-cid-bzovgbji]{color:var(--color-text);font-size:1.28rem;font-weight:850;line-height:1.1}.example-card__detail[data-astro-cid-bzovgbji]{color:var(--color-muted);font-size:1.06rem;font-weight:760;line-height:1.2}.example-card__row[data-astro-cid-bzovgbji]{align-items:center;display:flex;flex-wrap:wrap;gap:8px}.example-card__row[data-astro-cid-bzovgbji] strong[data-astro-cid-bzovgbji]{color:var(--color-text);font-family:Noto Sans Thai,Thonburi,Leelawadee UI,Tahoma,sans-serif;font-size:1.22rem;line-height:1.25}.example-card__row[data-astro-cid-bzovgbji] span[data-astro-cid-bzovgbji]{color:var(--color-muted);font-weight:900}.example-card__note[data-astro-cid-bzovgbji]{color:var(--color-muted);font-size:.86rem;font-weight:650;line-height:1.35}@media(max-width:720px){.example-card[data-astro-cid-bzovgbji]{align-items:stretch;grid-template-columns:1fr}.example-card__cells[data-astro-cid-bzovgbji]{border-top:1px solid rgba(16,63,87,.08);padding-top:8px}}.reference[data-astro-cid-bzovgbji],.drills[data-astro-cid-bzovgbji]{margin:34px 0}.reference-grid[data-astro-cid-bzovgbji]{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))!important;gap:10px}.reference-card[data-astro-cid-bzovgbji] ul[data-astro-cid-bzovgbji],.drill-card[data-astro-cid-bzovgbji] ol[data-astro-cid-bzovgbji]{margin:0;padding:0}.reference-card[data-astro-cid-bzovgbji]{background:#fff}.reference-card[data-astro-cid-bzovgbji] h3[data-astro-cid-bzovgbji]{color:var(--color-text);margin-bottom:12px}.reference-card[data-astro-cid-bzovgbji] ul[data-astro-cid-bzovgbji]{display:flex;flex-wrap:wrap;gap:8px;list-style:none}.reference-card[data-astro-cid-bzovgbji] li[data-astro-cid-bzovgbji]{background:var(--color-soft);border:1px solid rgba(16,63,87,.1);border-radius:8px;font-weight:700;line-height:1.35;margin:0;padding:8px 10px}.reference-card[data-astro-cid-bzovgbji] li[data-astro-cid-bzovgbji]:first-child{padding-top:8px}.reference-card--long-items[data-astro-cid-bzovgbji] ul[data-astro-cid-bzovgbji]{display:grid;gap:8px}.reference-card--long-items[data-astro-cid-bzovgbji] li[data-astro-cid-bzovgbji]{width:100%}.reference-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))!important}.reference-list{display:flex!important;flex-wrap:wrap;gap:8px!important;list-style:none;margin:0;padding:0}.reference-list li{background:var(--color-soft);border:1px solid rgba(16,63,87,.1);border-radius:8px;font-weight:700;line-height:1.35;margin:0;padding:8px 10px}.reference-card--long-items .reference-list{display:grid!important;gap:8px!important}.reference-card--middle[data-astro-cid-bzovgbji]{border-color:#24804a6b;background:#eef8f1}.reference-card--middle[data-astro-cid-bzovgbji] h3[data-astro-cid-bzovgbji]{color:#1f7a45}.reference-card--high[data-astro-cid-bzovgbji]{border-color:#c53d346b;background:#fff0ee}.reference-card--high[data-astro-cid-bzovgbji] h3[data-astro-cid-bzovgbji]{color:#b43a31}.reference-card--low[data-astro-cid-bzovgbji]{border-color:#146c946b;background:#eef6fb}.reference-card--low[data-astro-cid-bzovgbji] h3[data-astro-cid-bzovgbji]{color:#146c94}.script-dotted-cluster{color:color-mix(in srgb,var(--color-text) 68%,transparent);display:inline-block;font-family:Noto Sans Thai,Thonburi,Leelawadee UI,Tahoma,Segoe UI Symbol,"Noto Sans Symbols 2",sans-serif;font-weight:760;line-height:1;text-shadow:none;unicode-bidi:isolate;vertical-align:baseline}.drill-card[data-astro-cid-bzovgbji]+.drill-card[data-astro-cid-bzovgbji]{margin-top:12px}.lesson-nav[data-astro-cid-bzovgbji]{border-top:1px solid var(--color-border);display:flex;justify-content:space-between;gap:16px;margin-top:44px;max-width:780px;padding-top:20px}.lesson-nav[data-astro-cid-bzovgbji] a[data-astro-cid-bzovgbji]{font-weight:800}@media(max-width:980px){.lesson-layout[data-astro-cid-bzovgbji]{grid-template-columns:1fr}.lesson-sidebar[data-astro-cid-bzovgbji]{display:none}.lesson__mobile-promo[data-astro-cid-bzovgbji]{display:block}.tool-callout[data-astro-cid-bzovgbji]{align-items:flex-start;flex-direction:column}}@media(max-width:640px){.lesson-nav[data-astro-cid-bzovgbji]{flex-direction:column}}