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28px}.page-stack{gap:16px}.lesson-switcher{margin-bottom:14px;padding:0 2px}.lesson-switcher button{background:0 0;border-radius:10px;min-height:38px;padding:5px 11px 5px 6px}.lesson-switcher button b{border-radius:7px;width:26px;height:26px}.lesson-switcher button.active{box-shadow:none;background:#fff;border-color:#e1c2ba}.lesson-hero{border-color:var(--line);background:var(--paper);min-height:168px;box-shadow:none;border-radius:18px;padding:30px 34px}.lesson-hero h1{margin:7px 0;font-family:inherit;font-size:clamp(27px,3.4vw,40px);font-weight:750;line-height:1.2}.lesson-hero p{line-height:1.55}.progress-ring{width:92px;height:92px;margin-left:24px}.progress-ring:before{inset:7px}.section-card,.dictation-card,.empty-state,.mistake-list article{box-shadow:none;border-radius:16px}.section-card{padding:22px}.section-heading{margin-bottom:14px}.section-heading h2{font-size:18px}.today-focus{border-color:#dddcd7}.task-list{gap:5px}.task-row{background:var(--surface-muted);border-radius:11px;min-height:58px;padding:10px 12px}.task-row:hover{background:#eaece8}.task-row.done{background:#f1f6f2}.ability-panel,.reinforcement-panel{border:1px solid var(--line);box-shadow:none;background:#fffffdc7;border-radius:14px;padding:0}.ability-panel summary,.reinforcement-panel summary{cursor:pointer;justify-content:space-between;align-items:center;gap:16px;min-height:66px;padding:12px 18px;list-style:none;display:flex}.ability-panel summary::-webkit-details-marker{display:none}.reinforcement-panel summary::-webkit-details-marker{display:none}.ability-panel summary>div,.reinforcement-panel summary>div{gap:3px;min-width:0;display:grid}.ability-panel summary div>span,.reinforcement-panel summary div>span{color:var(--muted);font-size:12px}.ability-panel summary strong,.reinforcement-panel summary strong{text-overflow:ellipsis;white-space:nowrap;font-size:14px;overflow:hidden}.ability-panel summary>span,.reinforcement-panel summary>span{color:var(--accent);flex:none;font-size:12px;font-weight:700}.ability-panel[open] summary,.reinforcement-panel[open] summary{border-bottom:1px solid var(--line)}.ability-panel-body,.reinforcement-panel-body{padding:17px 18px 18px}.ability-panel-heading{align-items:center}.ability-metrics{margin:14px 0}.ability-metrics span{background:var(--surface-muted);padding:10px}.ability-metrics b{font-size:19px}.quick-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.quick-card{min-height:128px;box-shadow:none;border-radius:15px;transform:none}.quick-card:hover{transform:translateY(-1px)}.mobile-more-panel,.mobile-more-backdrop{display:none}@media (width<=760px){body{background:#f5f6f3}.topbar{padding:0 14px}.workspace{padding:12px 10px 88px}.lesson-switcher{gap:6px;margin-bottom:10px}.lesson-switcher>span{display:none}.lesson-switcher button{min-height:40px}.page-stack{gap:10px}.lesson-hero{border-radius:15px;min-height:154px;padding:22px 18px}.lesson-hero h1{max-width:245px;font-size:27px}.lesson-hero p{max-width:235px}.progress-ring{width:72px;height:72px;margin-left:-30px;transform:translate(5px,42px)}.section-card{border-radius:14px;padding:16px 12px}.task-row{min-height:55px;padding:9px 8px}.ability-panel summary,.reinforcement-panel summary{min-height:60px;padding:10px 13px}.ability-panel-body,.reinforcement-panel-body{padding:14px 13px}.ability-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.quick-grid{grid-template-columns:1fr 1fr}.quick-card{min-height:118px;padding:15px}.mobile-nav{background:#fffffdf7;border-radius:16px;grid-template-columns:repeat(5,1fr);padding:6px 4px;bottom:8px;left:8px;right:8px;box-shadow:0 8px 30px #22211f1f}.mobile-nav button{min-width:0}.mobile-nav button span{font-family:Noto Sans JP,Yu Gothic,sans-serif;font-size:16px}.mobile-more-backdrop{z-index:27;background:#22211f2e;border:0;width:100%;display:block;position:fixed;inset:0}.mobile-more-panel{z-index:29;border:1px solid var(--line);opacity:0;pointer-events:none;background:#fff;border-radius:16px;grid-template-columns:repeat(5,1fr);gap:5px;padding:12px 8px;transition:opacity .15s,transform .15s;display:grid;position:fixed;bottom:79px;left:10px;right:10px;transform:translateY(8px);box-shadow:0 14px 40px #22211f29}.mobile-more-panel.open{opacity:1;pointer-events:auto;transform:translateY(0)}.mobile-more-panel button{min-width:0;min-height:58px;color:var(--muted);background:0 0;border:0;border-radius:10px;place-items:center;gap:3px;padding:6px 2px;font-size:11px;display:grid}.mobile-more-panel button span{font-family:Noto Sans JP,Yu Gothic,sans-serif;font-size:17px}.mobile-more-panel button.active{background:var(--accent-soft);color:var(--accent);font-weight:700}.mobile-more-panel button:disabled{opacity:.38}}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}