.tracks-shell{max-width:1120px;color:var(--foreground);margin:0 auto;padding:32px 24px 64px;line-height:1.65}.tracks-shell *{box-sizing:border-box}.tracks-shell h1{letter-spacing:-.035em;margin:20px 0;font-size:clamp(24px,4vw,32px);font-weight:800;line-height:1.25}.tracks-shell h1 span{color:var(--primary)}.tracks-shell h2{margin:12px 0;font-size:21px;font-weight:700;line-height:1.4}.tracks-shell h3{font-size:var(--text-title-sm);margin:24px 0 10px;font-weight:700}.tracks-shell p{margin:12px 0}.tracks-shell small{color:var(--muted-foreground)}.tracks-shell a,.tracks-shell button,.tracks-shell summary,.tracks-shell input{touch-action:manipulation}.tracks-shell :focus-visible{outline:3px solid var(--ring);outline-offset:4px}.track-breadcrumb{font-size:var(--text-label);color:var(--muted-foreground);flex-wrap:wrap;gap:10px;display:flex}.track-breadcrumb a:hover,.track-pagination a:hover{color:var(--primary)}.track-eyebrow{font:700 12px/1.7 var(--font-sans);letter-spacing:.02em;color:var(--primary);margin-top:30px!important}.track-lead{max-width:750px;color:var(--muted-foreground);font-size:17px}.track-stats{color:var(--muted-foreground);font-size:var(--text-label);flex-wrap:wrap;gap:28px;margin:30px 0 36px;display:flex}.track-stats strong{color:var(--foreground);font-size:22px;display:block}.track-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;display:grid}.track-card{border:1px solid var(--border);background:linear-gradient(145deg, color-mix(in srgb, var(--primary) 7%, var(--card)), var(--card));border-radius:18px;flex-direction:column;padding:24px;display:flex}.track-icon{color:var(--primary)}.track-card p{color:var(--muted-foreground);font-size:var(--text-label);flex:1}.track-card small{font-size:var(--text-meta)}.track-levels{flex-wrap:wrap;gap:7px;margin-top:18px;display:flex}.track-levels a{border:1px solid var(--border);min-width:35px;min-height:44px;color:var(--foreground);font:600 12px var(--font-sans);border-radius:8px;flex:1;justify-content:center;align-items:center;display:flex}.track-levels a:hover,.track-levels a[aria-current=page]{background:var(--accent);border-color:var(--primary);color:var(--primary)}.track-level-picker{max-width:480px;margin:24px 0}.track-note{border-left:2px solid var(--input);color:var(--muted-foreground);font-size:var(--text-label);padding:8px 16px;margin:24px 0!important}.track-progress{color:var(--primary);font-size:var(--text-label)}.track-unit-list{gap:12px;display:grid;padding:0!important;list-style:none!important}.track-unit{border:1px solid var(--border);background:var(--card);border-radius:14px;align-items:center;gap:18px;padding:20px;display:flex}.track-unit:hover{border-color:var(--primary);background:var(--accent)}.track-unit>div{flex:1;min-width:0}.track-unit h2{margin:0;font-size:17px}.track-unit p{font-size:var(--text-label);color:var(--muted-foreground);margin:5px 0}.track-unit small{font-size:var(--text-meta)}.track-unit-number{font:600 18px var(--font-sans);color:var(--primary);flex-shrink:0}.track-tag{font-size:var(--text-meta);letter-spacing:.02em;color:var(--ai);margin-bottom:7px;display:inline-block}.track-lesson{max-width:860px;margin:auto}.track-lesson h1{font-size:clamp(28px,3.4vw,40px)}.track-panel{border:1px solid var(--border);background:var(--card);overflow-wrap:anywhere;border-radius:16px;margin:24px 0;padding:28px;scroll-margin-top:80px}.track-panel h2{color:var(--primary);margin-top:0}.track-panel ul,.track-panel ol{margin:12px 0;padding-left:24px}.track-panel ul{list-style:outside}.track-panel ol{list-style:decimal}.track-panel li{margin:8px 0}.track-panel details{border-bottom:1px solid var(--border);font-size:var(--text-label);padding:12px 0}.track-panel summary{cursor:pointer;color:var(--muted-foreground)}.track-vocabulary>div{border-bottom:1px solid var(--border);padding:14px 0}.track-vocabulary dt{font:600 15px var(--font-sans);color:var(--ai)}.track-vocabulary dd{color:var(--muted-foreground);font-size:var(--text-label);margin:6px 0 0}.track-vocabulary blockquote{color:var(--foreground);margin:8px 0 0;font-style:italic}.track-example{border-left:3px solid var(--ai);margin:15px 0;padding:4px 18px}.track-reading{white-space:pre-line;line-height:1.9;font-size:var(--text-study)}.track-dialogue .track-speaker{font-weight:700}.track-speaker-0{color:#059669}.track-speaker-1{color:#0284c7}.track-speaker-2{color:#7c3aed}.track-speaker-3{color:#d97706}.track-speaker-4{color:#db2777}.track-speaker-5{color:#dc2626}.dark .track-speaker-0{color:#34d399}.dark .track-speaker-1{color:#38bdf8}.dark .track-speaker-2{color:#a78bfa}.dark .track-speaker-3{color:#fbbf24}.dark .track-speaker-4{color:#f472b6}.dark .track-speaker-5{color:#f87171}.track-field{margin:24px 0 14px;font-weight:600;display:block}.track-field textarea{resize:vertical;background:var(--background);border:1px solid var(--input);width:100%;color:var(--foreground);font-family:inherit;font-size:var(--text-study);border-radius:10px;margin:10px 0;padding:14px;font-weight:400;line-height:1.6;display:block}.track-button{border:1px solid var(--primary);background:var(--primary);min-height:44px;color:var(--primary-foreground);font-weight:700;font-size:var(--text-label);cursor:pointer;border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:10px 18px;display:inline-flex}.track-button.secondary{background:var(--secondary);border-color:var(--input);color:var(--foreground)}.track-button:disabled{opacity:.45;cursor:not-allowed}.track-hint{color:var(--muted-foreground);font-size:var(--text-meta);margin:12px 0;display:block}.track-question{border:0;min-width:0;margin:26px 0;padding:0}.track-question legend{margin-bottom:12px;font-weight:600}.track-option{border:1px solid var(--input);cursor:pointer;font-size:var(--text-label);border-radius:12px;align-items:flex-start;gap:12px;margin:8px 0;padding:12px;display:flex}.track-option.selected{background:var(--accent);border-color:var(--primary)}.track-option input,.track-check input{accent-color:var(--primary);flex-shrink:0;width:16px;height:16px;margin-top:5px}.track-feedback{background:var(--card);border:1px solid var(--success);font-size:var(--text-label);border-radius:10px;margin:15px 0;padding:16px;font-weight:400;display:block}.track-feedback p{margin:6px 0}.track-result{color:var(--primary)}.track-check{font-size:var(--text-label);cursor:pointer;align-items:flex-start;gap:12px;margin:14px 0;display:flex}.track-warning{background:var(--card);color:var(--warning);border-radius:10px;padding:16px}.track-pagination{font-size:var(--text-label);justify-content:space-between;gap:18px;margin:30px 0;display:flex}.track-pagination a{align-items:center;gap:8px;min-height:44px;display:flex}.track-jump{flex-wrap:wrap;gap:8px;margin:24px 0;display:flex}.track-jump a{border:1px solid var(--input);font-size:var(--text-label);color:var(--ai);border-radius:8px;padding:8px 12px}.track-jump a:hover{background:var(--secondary)}@media (width<=1100px){.track-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=600px){.tracks-shell{padding:20px 16px 40px}.track-grid{grid-template-columns:1fr}.track-card{padding:22px}.track-panel{padding:20px 16px}.track-unit{gap:12px;padding:16px}.track-unit>svg{display:none}.track-stats{gap:22px}.track-lesson h1{overflow-wrap:anywhere}.track-reading{font-size:15px}}.track-jump button{border:1px solid var(--border);color:var(--primary);background:var(--card);cursor:pointer;border-radius:12px;padding:12px 18px}.track-jump button:hover{background:var(--accent)}.lesson-popup{border-radius:18px;flex-direction:column;gap:0;width:calc(100vw - 24px);max-width:960px;max-height:calc(100dvh - 24px);padding:0;display:flex;overflow:hidden}.lesson-popup-header{border-bottom:1px solid var(--border);padding:20px 48px 16px 20px}.lesson-popup-header p{margin-top:6px}.tracks-shell.lesson-popup-body{overscroll-behavior:contain;width:100%;min-height:0;padding:16px;overflow-y:auto}.lesson-popup-body .track-panel{margin:0}.lesson-popup-close{color:var(--primary);background:var(--card);border-top:1px solid var(--border);padding:14px}.track-mode{font:12px/1.6 var(--font-sans);color:var(--muted-foreground);border:1px solid var(--border);border-radius:12px;padding:12px}.track-locked-level{color:var(--muted-foreground);opacity:.7;align-items:center;gap:4px;padding:8px;display:inline-flex}.track-path{max-width:680px;margin:24px auto;padding:32px 0;list-style:none;position:relative}.track-path:before{content:"";background:var(--border);width:2px;position:absolute;top:60px;bottom:70px;left:50%}.track-path li{text-align:center;padding:20px 12px 38px;position:relative}.track-path h2{font-size:var(--text-study);max-width:320px;margin:12px auto 4px}.track-path li>p{color:var(--muted-foreground);font-size:var(--text-label);margin:0}.track-path-node{border:2px solid var(--border);width:68px;height:68px;color:var(--foreground);background:var(--card);font:700 20px var(--font-sans);box-shadow:0 5px 0 var(--border);cursor:pointer;border-radius:22px;place-items:center;margin:0 auto;display:grid}.track-path li.current .track-path-node{color:var(--primary-foreground);background:var(--primary);border-color:var(--primary);box-shadow:0 5px 0 color-mix(in srgb, var(--primary) 55%, var(--background)), 0 0 0 7px color-mix(in srgb, var(--primary) 12%, transparent)}.track-path li.completed .track-path-node{color:var(--primary);border-color:var(--primary)}.track-path-node:disabled{color:var(--muted-foreground);cursor:not-allowed}.track-path li>.track-path-module{background:var(--background);border:1px solid var(--border);max-width:420px;color:var(--foreground);border-radius:10px;margin:0 auto 24px;padding:12px}.lesson-runner{background:var(--background);border:0;grid-template-rows:auto minmax(0,1fr) auto;gap:0;width:100vw;height:100dvh;padding:0;display:grid;position:fixed;inset:0;transform:none;border-radius:0!important;max-width:none!important;translate:none!important}.lesson-runner>button{display:none}.lesson-runner-header{width:min(100%,1040px);padding:max(24px, env(safe-area-inset-top)) 28px 20px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:24px 12px;margin:0 auto;display:grid}.lesson-exit{color:var(--muted-foreground);border-radius:10px;justify-self:start;padding:6px}.lesson-exit:hover{background:var(--muted)}.lesson-runner-progress{min-width:0}.lesson-runner-progress progress{width:100%;height:12px;accent-color:var(--primary);border:0;border-radius:99px;overflow:hidden}.lesson-runner-progress progress::-webkit-progress-bar{background:var(--muted)}.lesson-runner-progress progress::-webkit-progress-value{background:var(--primary);border-radius:99px;transition:width .2s}.lesson-runner-title{font-size:var(--text-label);color:var(--foreground);grid-area:2/1/auto/2}.lesson-runner-level{color:var(--primary);font-family:var(--font-sans);font-weight:700}.tracks-shell.lesson-runner-body{overscroll-behavior:contain;width:100%;max-width:960px;min-height:0;margin:0 auto;padding:28px;overflow-y:auto}.lesson-stage .track-panel{background:0 0;border:0;margin:0;padding:0}.lesson-stage .track-panel>h2{margin-bottom:24px}.lesson-stage:has(.vocabulary-session){min-height:100%}.lesson-stage:has(.vocabulary-session) .vocabulary-session{background:0 0;border:0;border-radius:0;margin:0;padding:0}.lesson-runner-footer{border-top:1px solid var(--border);padding:20px max(28px, calc((100vw - 984px) / 2)) max(20px, env(safe-area-inset-bottom));background:var(--background);justify-content:space-between;align-items:center;gap:18px;display:flex}.lesson-runner-footer p{font-size:var(--text-meta);color:var(--muted-foreground)}.lesson-runner-footer .track-button{justify-content:center;min-width:180px}.lesson-runner-footer.vocabulary-hidden-footer{display:none}.lesson-complete{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:20px;min-height:60vh;display:flex}.lesson-complete>svg{color:var(--primary)}.lesson-exit-confirm{z-index:2;background:color-mix(in srgb, var(--background) 90%, transparent);place-items:center;padding:24px;display:grid;position:absolute;inset:0}.lesson-exit-confirm>div{border:1px solid var(--border);background:var(--card);border-radius:20px;width:min(100%,440px);padding:28px}.lesson-exit-confirm h2{margin-bottom:16px;font-size:24px}.lesson-exit-confirm p{color:var(--muted-foreground);margin-bottom:24px}.lesson-exit-confirm button{margin-bottom:12px;margin-right:12px}@media (width<=640px){.lesson-runner-header{padding:max(16px, env(safe-area-inset-top)) 16px 12px;gap:12px 8px}.lesson-exit{padding:6px}.lesson-exit svg{width:16px;height:16px}.lesson-runner-progress progress{height:8px}.lesson-runner-title{font-size:var(--text-meta)}.tracks-shell.lesson-runner-body{padding:20px}.lesson-runner-footer{padding:16px 20px max(16px, env(safe-area-inset-bottom))}.lesson-runner-footer p{max-width:100px}.lesson-runner-footer .track-button{min-width:150px}}@media (prefers-reduced-motion:reduce){.lesson-runner-progress progress::-webkit-progress-value{transition:none}}.track-reading,.track-lead,.track-panel>p,.speaking-target,.speaking-script p{max-width:70ch;font-family:var(--font-sans);font-size:var(--text-study);line-height:1.6}.track-button:hover:not(:disabled){background:var(--primary-hover)}.track-button.secondary:hover:not(:disabled){background:var(--accent)}.track-question legend,.track-option{font-size:var(--text-study);line-height:1.6}@media (width>=768px){.track-reading,.speaking-target{font-size:var(--text-study-lg)}}@media (width<=360px){.lesson-runner-header{gap:8px;padding-inline:12px}.tracks-shell.lesson-runner-body{min-width:0;padding:16px}.lesson-runner-footer{flex-wrap:wrap;gap:8px;padding-inline:16px}.lesson-runner-footer p{max-width:none;margin:0}.lesson-runner-footer .track-button{width:100%;min-width:0}}.study-path-shell{min-width:0;max-width:760px;margin:0 auto}.study-path-header{z-index:20;border:1px solid var(--border);background:var(--card);border-radius:16px;justify-content:space-between;align-items:center;gap:12px;padding:16px;display:flex;position:sticky;top:0}@media (width<=767px){.study-path-header{top:12px}}.study-path-meta{color:var(--primary);font-size:var(--text-label);margin:0 0 4px}.study-path-header h1{font-size:var(--text-title-sm);overflow-wrap:anywhere;margin:0;line-height:1.25}.study-path-status{min-height:44px;color:var(--muted-foreground);font-size:var(--text-meta);cursor:pointer;background:0 0;border-radius:10px;flex-shrink:0;align-items:center;gap:6px;padding:8px;display:flex}.study-path-status:hover{background:var(--accent);color:var(--foreground)}.study-path-map{max-width:380px;margin:0 auto;padding:24px 0 100px}.study-path-map:before{display:none}.study-path-map li{min-height:122px;padding:24px 0}.study-path-node-wrap{flex-direction:column;align-items:center;gap:12px;width:80px;margin:0 auto;display:flex;position:relative}.study-path-offset-1{transform:translate(48px)}.study-path-offset-3{transform:translate(-48px)}.study-path-map .track-path-node{border-color:var(--input);border-radius:24px;width:72px;height:72px}.study-path-map .track-path-node[data-state=locked]{color:var(--muted-foreground);background:var(--muted)}.study-path-map .track-path-node:hover{filter:brightness(1.08)}.study-path-map li.current{padding-top:24px}.study-path-lesson-title{text-align:center;overflow-wrap:anywhere;width:min(240px,100vw - 128px);color:var(--muted-foreground);font-size:var(--text-label);line-height:1.5}.study-path-callout{font-size:var(--text-label);background:var(--primary);color:var(--primary-foreground);border-radius:8px;padding:5px 12px;font-weight:600}.study-path-map li>.study-path-divider{color:var(--muted-foreground);font-size:var(--text-label);background:var(--background);margin:0 0 12px;padding:0 12px 24px}.study-path-more{text-align:center;padding:0 0 32px}.study-path-end{color:var(--muted-foreground);font-size:var(--text-study);padding:16px;line-height:1.6}.study-path-dialog{max-height:85dvh;overflow-y:auto}@media (width<=639px){.study-path-dialog[data-state]{width:100%;max-width:none;padding:24px 20px max(24px, env(safe-area-inset-bottom));border-radius:20px 20px 0 0;inset:auto 0 0;transform:none;translate:none!important}}@media (width<=359px){.study-path-header{flex-wrap:wrap;padding:12px}.study-path-header h1{font-size:var(--text-study-lg)}.study-path-offset-1{transform:translate(24px)}.study-path-offset-3{transform:translate(-24px)}.study-path-status{min-height:32px}}@media (prefers-reduced-motion:reduce){.study-path-shell *,.study-path-dialog{scroll-behavior:auto;transition:none;animation:none}}.track-gloss{font:inherit;color:inherit;cursor:pointer;-webkit-text-decoration:underline dotted;text-decoration:underline dotted;-webkit-text-decoration-color:var(--primary);-webkit-text-decoration-color:var(--primary);text-decoration-color:var(--primary);text-underline-offset:4px;background:0 0;border:0;padding:0;text-decoration-thickness:2px}.track-gloss-popover{gap:4px;width:auto;max-width:260px;padding:10px 12px;font-size:14px;display:grid}.track-gloss-popover small{color:var(--muted-foreground)}.track-word-active{border-radius:4px;transition:background-color .12s}.track-speaker-bg-0{background:#10b98140}.track-speaker-bg-1{background:#0ea5e940}.track-speaker-bg-2{background:#8b5cf640}.track-speaker-bg-3{background:#f59e0b40}.track-speaker-bg-4{background:#ec489940}.track-speaker-bg-5{background:#ef444440}.dark .track-speaker-bg-0{background:#34d3994d}.dark .track-speaker-bg-1{background:#38bdf84d}.track-semantic{border-radius:10px;gap:4px;margin-top:6px;padding:10px 12px;font-size:14px;display:grid}.track-semantic.passed{color:var(--foreground);background:#10b9811f}.track-semantic.missing{color:var(--foreground);background:#f59e0b24;display:block}