.exercise-diagnostics{margin-top:12px;font-size:.7rem;color:var(--muted);overflow-wrap:anywhere}.exercise-diagnostics summary{cursor:pointer}.exercise-diagnostics small{display:block;margin-top:8px;line-height:1.4}
.topic-screen{position:relative;isolation:isolate;min-height:100svh;padding:0 14px;color:var(--text);overflow:hidden}.topic-screen-backdrop{position:absolute;z-index:-1;inset:0;background:linear-gradient(180deg,rgba(4,17,42,.76),#07162d 38%),url("/learn-assets/map/assets/academy-learning-path.png") center top/cover fixed no-repeat}.topic-screen-header{position:sticky;z-index:5;top:0;max-width:900px;margin:0 auto;min-height:78px;display:grid;grid-template-columns:46px 1fr auto;align-items:center;gap:12px;padding:10px 0;background:rgba(7,22,45,.92);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.topic-back-button{width:42px;height:42px;border:1px solid var(--line);border-radius:50%;background:#153967;color:var(--text);font-size:1.35rem;cursor:pointer}.topic-screen-header small{display:block;color:var(--teal);font-size:.66rem;font-weight:800;text-transform:uppercase}.topic-screen-header h1{margin:3px 0 0;font-size:clamp(1.05rem,3vw,1.55rem);line-height:1.15;letter-spacing:0}.topic-header-actions{display:flex;align-items:center;gap:9px}.topic-header-actions>button{width:38px;height:38px;border:1px solid var(--line);border-radius:50%;background:#153967;color:var(--gold);font-size:1rem;cursor:pointer}.topic-screen-progress{display:grid;text-align:right}.topic-screen-progress strong{color:var(--gold);font-size:1.1rem}.topic-screen-progress span{color:var(--muted);font-size:.64rem}.topic-screen-content{max-width:820px;margin:0 auto}.topic-screen-content>section{padding:28px 4px;border-bottom:1px solid rgba(144,217,240,.18)}.topic-section-heading{margin-bottom:14px}.topic-section-heading p{margin:0;color:var(--teal);font-size:.67rem;font-weight:900;text-transform:uppercase}.topic-section-heading h2{margin:3px 0 0;font-size:1.18rem;letter-spacing:0}.topic-section-heading small{display:block;margin-top:5px;color:var(--muted);font-size:.72rem}.topic-rule{display:grid;gap:7px}.topic-rule p{margin:0;color:#e5f2fb;line-height:1.55;font-size:.88rem}.topic-rule .rule-bullet{position:relative;padding-left:17px}.topic-rule .rule-bullet:before{content:"";position:absolute;left:2px;top:.65em;width:6px;height:6px;border-radius:50%;background:var(--gold)}.example-list{display:grid;gap:8px}.example-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;padding:11px 0;border-bottom:1px solid rgba(144,217,240,.14)}.example-row strong{font-size:.86rem}.example-row span{color:var(--muted);font-size:.82rem}.topic-table-wrap{overflow:auto;border:1px solid var(--line);border-radius:8px}.topic-table{width:100%;border-collapse:collapse;background:rgba(8,28,58,.86);font-size:.78rem}.topic-table th,.topic-table td{padding:10px;border-bottom:1px solid rgba(144,217,240,.14);text-align:left;white-space:nowrap}.topic-table th{color:var(--teal);background:#10294d}.topic-table tr.know{background:rgba(102,224,209,.1)}.topic-table tr.no{background:rgba(255,139,123,.08)}.knowledge-toggle{min-width:72px;border:1px solid var(--line);border-radius:7px;padding:6px;background:#153967;color:var(--text);font-size:.68rem;cursor:pointer}.topic-exercise-list{display:grid;gap:12px}.topic-exercise-card{padding:15px;border:1px solid var(--line);border-radius:8px;background:rgba(8,28,58,.92);box-shadow:0 8px 22px rgba(0,0,0,.22)}.topic-exercise-card.correct{border-color:rgba(102,224,209,.72)}.topic-exercise-card.wrong{border-color:rgba(255,139,123,.72)}.topic-exercise-card>header{display:flex;justify-content:space-between;gap:10px;margin-bottom:12px}.topic-exercise-card>header span{color:var(--gold);font-size:.66rem;font-weight:900;text-transform:uppercase}.topic-exercise-card>header em{color:var(--muted);font-size:.66rem;font-style:normal}.exercise-question{font-size:1.02rem;font-weight:800;line-height:1.4}.question-blank{display:inline-block;width:44px;border-bottom:2px solid var(--gold);vertical-align:baseline}.exercise-subtitle,.exercise-tip{margin-top:5px;color:var(--muted);font-size:.76rem}.exercise-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:13px}.exercise-options button,.order-bank button,.order-built button,.order-actions button{min-height:42px;border:1px solid var(--line);border-radius:7px;background:#153967;color:var(--text);font:inherit;font-size:.8rem;font-weight:750;cursor:pointer}.exercise-options button.correct{border-color:var(--teal);background:#174a4b}.exercise-options button.wrong{border-color:var(--coral);background:#532d3a}.exercise-options button:disabled{opacity:.84;cursor:default}.exercise-feedback{min-height:20px;margin-top:10px;font-size:.78rem;font-weight:800}.exercise-feedback.correct{color:var(--teal)}.exercise-feedback.wrong{color:var(--coral)}.order-built,.order-bank{display:flex;flex-wrap:wrap;gap:7px;min-height:54px;margin-top:10px;padding:8px;border:1px dashed rgba(144,217,240,.3);border-radius:7px}.order-built{background:rgba(102,224,209,.06)}.order-bank button,.order-built button{min-height:36px;padding:0 10px}.order-actions{display:flex;gap:8px;margin-top:10px}.order-actions button{padding:0 14px;background:var(--gold);color:#14213a;border-color:var(--gold)}.order-actions button.secondary{background:#153967;color:var(--text);border-color:var(--line)}.topic-empty{display:grid;gap:5px;padding:18px;text-align:center;border:1px solid var(--line);border-radius:8px;color:var(--muted)}.topic-empty strong{color:var(--text)}@media(max-width:620px){.topic-screen{padding-inline:10px}.topic-screen-header{grid-template-columns:42px 1fr auto}.topic-screen-header h1{font-size:1rem}.topic-header-actions{gap:5px}.topic-header-actions>button{width:34px;height:34px}.topic-screen-progress strong{font-size:.92rem}.example-row{grid-template-columns:1fr;gap:4px}.exercise-options{grid-template-columns:1fr}.topic-screen-content>section{padding-block:23px}.topic-exercise-card{padding:13px}}

.map-pronunciation-guide{display:grid;gap:4px;margin-bottom:10px;padding:13px;border:1px solid rgba(102,224,209,.36);border-radius:10px;background:rgba(102,224,209,.08)}
.map-pronunciation-guide strong{color:var(--teal);font-size:.86rem}
.map-pronunciation-guide span{color:var(--muted);font-size:.78rem;line-height:1.5}
.map-pronunciation-actions{display:flex;justify-content:flex-end;margin-bottom:10px}
.map-pronunciation-actions button,.map-pronunciation-card-actions button{min-height:40px;border:1px solid var(--gold);border-radius:8px;background:var(--gold);color:#14213a;padding:8px 12px;font:inherit;font-size:.76rem;font-weight:900;cursor:pointer}
.map-pronunciation-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.map-pronunciation-card{display:grid;align-content:start;gap:11px;min-width:0;padding:14px;border:1px solid var(--line);border-radius:11px;background:rgba(8,28,58,.92)}
.map-pronunciation-card>header{display:flex;align-items:start;justify-content:space-between;gap:9px}
.map-pronunciation-card>header div{display:grid;gap:4px}
.map-pronunciation-card>header strong{color:var(--teal);font-size:.9rem}
.map-pronunciation-card>header span,.map-pronunciation-card>header small{color:var(--muted);font-size:.7rem;line-height:1.4}
.map-pronunciation-card>header small{flex:0 0 auto;padding:3px 6px;border-radius:999px;background:rgba(102,224,209,.1)}
.map-pronunciation-words{display:flex;flex-wrap:wrap;gap:6px}
.map-pronunciation-words button{display:inline-flex;align-items:center;gap:5px;max-width:100%;min-height:36px;border:1px solid var(--line);border-radius:999px;background:#153967;color:var(--text);padding:6px 9px;font:inherit;font-size:.75rem;font-weight:800;cursor:pointer}
.map-pronunciation-words button:hover{border-color:var(--gold);color:var(--gold)}
.map-pronunciation-card-actions{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.map-pronunciation-card-actions button.secondary{border-color:var(--line);background:#153967;color:var(--text)}
.map-pronunciation-pairs{display:grid;gap:8px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.map-pronunciation-pairs .topic-section-heading{margin-bottom:3px}
.map-pronunciation-pairs h3{margin:3px 0 0;font-size:1rem}
.map-pronunciation-pairs>article{display:grid;gap:9px;padding:12px;border:1px solid rgba(144,217,240,.15);border-radius:9px;background:rgba(8,28,58,.64)}
.map-pronunciation-pairs>article>div:first-child{display:grid;gap:3px}
.map-pronunciation-pairs>article strong{color:var(--teal);font-size:.84rem}
.map-pronunciation-pairs>article span{color:var(--muted);font-size:.74rem;line-height:1.4}
.map-pronunciation-words button.sentence{flex-basis:100%;border-radius:8px;justify-content:flex-start;color:var(--gold)}
.map-pronunciation-status{min-height:20px;margin:12px 0 0;color:var(--teal);font-size:.76rem}
@media(max-width:620px){.map-pronunciation-grid{grid-template-columns:1fr}.map-pronunciation-actions button{width:100%}.map-pronunciation-card-actions{grid-template-columns:1fr}}

.structured-lesson{display:grid;gap:14px}.lesson-narration-status{min-height:18px;margin:0;color:var(--teal);font-size:.7rem}
.shadowing-focus-card.english-explanation{border-color:rgba(102,224,209,.8);background:radial-gradient(circle at 50% 0,rgba(102,224,209,.14),transparent 50%),linear-gradient(145deg,rgba(24,62,103,.98),rgba(10,34,67,.98))}.english-explanation .shadowing-language-badge{border-color:rgba(102,224,209,.55);color:var(--teal)}.shadowing-focus-card.english-explanation h1{font-size:clamp(1.3rem,3.5vw,2.45rem);line-height:1.4}
.topic-screen-backdrop{background-image:linear-gradient(180deg,rgba(4,17,42,.76),#07162d 38%),url("/learn-assets/map/assets/academy-learning-path.png?v=academy-learning-path-2026-07-11")}

.written-answer{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:8px;margin-top:13px}.written-answer label{display:grid;gap:5px;color:var(--muted);font-size:.72rem}.written-answer input{min-height:42px;border:1px solid var(--line);border-radius:7px;padding:0 11px;background:#0b2448;color:var(--text);font:inherit}.written-answer input:focus{outline:2px solid var(--teal);outline-offset:1px}.written-answer button{min-height:42px;border:1px solid var(--gold);border-radius:7px;padding:0 14px;background:var(--gold);color:#14213a;font:inherit;font-size:.8rem;font-weight:750;cursor:pointer}@media(max-width:620px){.written-answer{grid-template-columns:1fr}.written-answer button{width:100%}}
.exercise-followup{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:10px}.exercise-followup:empty{display:none}.exercise-followup strong{flex-basis:100%;color:var(--teal);font-size:.86rem}.exercise-followup button{min-height:40px;border:1px solid var(--gold);border-radius:7px;padding:0 14px;background:var(--gold);color:#14213a;font:inherit;font-size:.78rem;font-weight:800;cursor:pointer}.exercise-followup button[data-open-exercise],.exercise-followup button[data-session-back]{border-color:var(--line);background:#153967;color:var(--text)}
.oral-answer{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:13px}.oral-answer button{min-height:44px;border:1px solid var(--gold);border-radius:8px;padding:8px 12px;background:var(--gold);color:#14213a;font:inherit;font-size:.8rem;font-weight:800;cursor:pointer}.oral-answer button.secondary{border-color:var(--line);background:#153967;color:var(--text)}.oral-answer button:disabled{opacity:.48;cursor:not-allowed}.oral-transcript{min-height:42px;margin-top:9px;padding:9px 11px;border:1px solid rgba(144,217,240,.2);border-radius:8px;background:rgba(7,22,45,.72);color:var(--muted);font-size:.75rem;line-height:1.45}@media(max-width:620px){.oral-answer{grid-template-columns:1fr}}
.exercise-card-heading{display:flex;align-items:center;gap:8px;min-width:0}.topic-exercise-card>header .exercise-track{display:inline-flex;align-items:center;min-height:22px;padding:2px 7px;border:1px solid rgba(102,224,209,.52);border-radius:999px;background:rgba(102,224,209,.1);color:var(--teal);font-size:.58rem;line-height:1}.topic-exercise-card>header .exercise-track.practice{border-color:rgba(255,204,92,.55);background:rgba(255,204,92,.1);color:var(--gold)}.exercise-card-heading strong{color:var(--text);font-size:.68rem;text-transform:uppercase}
.lexicon-term{display:inline;margin:0;padding:0 1px;border:0;border-bottom:1px dashed var(--gold);background:transparent;color:inherit;font:inherit;font-weight:inherit;cursor:pointer}.lexicon-term:hover,.lexicon-term:focus{color:var(--gold);outline:none}.lexicon-modal[hidden]{display:none}.lexicon-modal{position:fixed;z-index:30;inset:0;display:grid;place-items:center;padding:18px}.lexicon-modal-backdrop{position:absolute;inset:0;border:0;background:rgba(1,9,24,.82);backdrop-filter:blur(5px)}.lexicon-modal>section{position:relative;width:min(460px,100%);max-height:85svh;overflow:auto;padding:23px;border:1px solid var(--line);border-radius:14px;background:linear-gradient(145deg,#102c53,#081b38);box-shadow:0 24px 80px rgba(0,0,0,.55)}.lexicon-modal-close{position:absolute;right:12px;top:10px;width:36px;height:36px;border:1px solid var(--line);border-radius:50%;background:#153967;color:var(--text);font-size:1.35rem;cursor:pointer}.lexicon-modal small{color:var(--teal);font-size:.7rem;font-weight:850;text-transform:uppercase}.lexicon-modal h2{margin:5px 42px 4px 0;font-size:1.7rem}.lexicon-translation{display:block;margin:10px 0;color:var(--gold);font-size:1.05rem}.lexicon-forms{display:flex;align-items:center;flex-wrap:wrap;gap:7px;margin:13px 0}.lexicon-forms button,.lexicon-audio,.lexicon-examples button{border:1px solid var(--line);border-radius:8px;background:#153967;color:var(--text);font:inherit;cursor:pointer}.lexicon-forms button{padding:7px 10px;font-weight:850}.lexicon-forms span{color:var(--muted)}.lexicon-audio{width:100%;min-height:42px;margin:5px 0 13px;border-color:var(--gold);background:var(--gold);color:#14213a;font-weight:850}.lexicon-examples{display:grid;gap:7px}.lexicon-examples button{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px;text-align:left}.lexicon-examples button span{line-height:1.4}.lexicon-examples button em{font-style:normal}
.knowledge-help{margin:0 0 12px;padding:9px 11px;border:1px solid rgba(144,217,240,.2);border-radius:8px;background:rgba(7,22,45,.62);color:var(--muted);font-size:.72rem;line-height:1.45}.knowledge-help strong,.knowledge-help b{color:var(--text)}.lexicon-translation small,.lexicon-translation strong{display:block}.lexicon-translation strong{margin-top:3px;color:var(--gold);font-size:1.05rem}.lexicon-forms>div{display:grid;gap:4px}.lexicon-forms>div small{font-size:.58rem}.lexicon-examples>small{margin-bottom:2px}.lexicon-examples button span{display:grid;gap:3px}.lexicon-examples button span small{font-size:.58rem}.lexicon-examples button span strong{font-size:.82rem;line-height:1.4}

/* Each topic section is a single viewport card. Touch keeps native horizontal
   momentum; desktop users can drag the empty card surface or use the tabs. */
.topic-screen{height:100svh;min-height:0}
.topic-screen-content{display:grid;grid-template-rows:auto minmax(0,1fr) auto;max-width:1040px;height:calc(100svh - 78px);min-height:0}
.topic-pager-tabs{display:flex;gap:7px;min-width:0;margin:0;padding:9px 2px 8px;overflow-x:auto;scrollbar-width:none}
.topic-pager-tabs::-webkit-scrollbar,.topic-section-pager::-webkit-scrollbar{display:none}
.topic-pager-tabs button{flex:1 0 auto;min-height:36px;padding:7px 13px;border:1px solid rgba(144,217,240,.24);border-radius:999px;background:rgba(13,43,82,.82);color:var(--muted);font:inherit;font-size:.72rem;font-weight:850;cursor:pointer;transition:border-color .18s ease,background .18s ease,color .18s ease,transform .18s ease}
.topic-pager-tabs button:hover{border-color:var(--teal);color:var(--text)}
.topic-pager-tabs button[aria-selected="true"]{border-color:var(--gold);background:var(--gold);color:#14213a;transform:translateY(-1px)}
.topic-section-pager{display:flex;gap:14px;min-width:0;min-height:0;padding:2px;overflow-x:auto;overflow-y:hidden;scroll-behavior:smooth;scroll-snap-type:x mandatory;scrollbar-width:none;overscroll-behavior-x:contain;cursor:grab}
.topic-section-pager{overflow-anchor:none}
.topic-section-pager.dragging{cursor:grabbing;scroll-behavior:auto;scroll-snap-type:none;user-select:none}
.topic-panel{flex:0 0 calc(100% - 4px);width:calc(100% - 4px);height:100%;min-width:0;padding:clamp(17px,3vw,28px);overflow-x:hidden;overflow-y:auto;border:1px solid rgba(144,217,240,.25);border-radius:18px;background:linear-gradient(145deg,rgba(13,43,82,.97),rgba(6,26,54,.97));box-shadow:0 16px 38px rgba(0,0,0,.28);scroll-snap-align:start;scroll-snap-stop:always;overscroll-behavior:contain;outline:none}
.topic-panel:focus-visible{border-color:var(--teal);box-shadow:0 0 0 2px rgba(102,224,209,.3),0 16px 38px rgba(0,0,0,.28)}
.topic-panel>section{padding:0;border:0}
.topic-panel>section+section{margin-top:26px;padding-top:24px;border-top:1px solid rgba(144,217,240,.18)}

.topic-panel .topic-sequence-nav{margin-top:24px}.topic-pager-controls{display:grid;grid-template-columns:42px minmax(0,1fr) 42px;align-items:center;gap:10px;padding:8px 2px 4px}
.topic-pager-controls strong{color:var(--muted);font-size:.72rem;text-align:center}
.topic-pager-controls [data-topic-panel-label]{color:var(--gold)}
.topic-pager-controls button{width:42px;height:38px;border:1px solid var(--line);border-radius:10px;background:#153967;color:var(--text);font:inherit;font-weight:900;cursor:pointer;transition:transform .18s ease,border-color .18s ease}
.topic-pager-controls button:hover:not(:disabled){border-color:var(--teal);transform:translateX(2px)}
.topic-pager-controls button:first-child:hover:not(:disabled){transform:translateX(-2px)}
.topic-pager-controls button:disabled{opacity:.3;cursor:default}
@media(max-width:620px){.topic-screen-content{height:calc(100svh - 78px)}.topic-pager-tabs{gap:6px;padding-top:7px}.topic-pager-tabs button{min-height:34px;padding:6px 11px}.topic-section-pager{gap:9px}.topic-panel{flex-basis:calc(100% - 2px);width:calc(100% - 2px);padding:15px;border-radius:14px}.topic-panel>section+section{margin-top:20px;padding-top:19px}.topic-pager-controls{padding-top:6px}}
@media(prefers-reduced-motion:reduce){.topic-section-pager{scroll-behavior:auto}.topic-pager-tabs button,.topic-pager-controls button{transition:none}}
.exercise-sync-status{display:block;min-height:16px;margin-top:4px;color:var(--muted);font-size:.68rem}.exercise-sync-status.error{color:var(--coral)}
.exercise-task{margin-bottom:8px;color:var(--muted);font-size:.78rem;font-weight:750;line-height:1.35}.exercise-response-instruction{display:flex;align-items:center;gap:8px;margin-top:13px;padding:8px 10px;border:1px solid rgba(102,224,209,.28);border-radius:8px;background:rgba(102,224,209,.07);color:#dcebf7;font-size:.76rem}.exercise-response-instruction strong{flex:0 0 auto;padding:3px 7px;border-radius:999px;background:var(--teal);color:#07162d;font-size:.66rem;text-transform:uppercase}.exercise-response-instruction span{line-height:1.3}.exercise-feedback .answer-expected{color:var(--teal)}.review-summary{margin:0 0 14px;color:var(--muted);font-size:.78rem}
.topic-screen-content.adaptive-session-content{display:block;padding:9px 2px 14px}.adaptive-exercise-focus{width:100%;height:100%;max-height:calc(100svh - 96px)}