:root{--bg: #f4f1ea;--panel: #fffdf9;--panel-2: #f8f5ee;--line: #d9d2c3;--text: #1f1c17;--muted: #6f685d;--accent: #0f766e;--accent-2: #115e59;--danger: #b42318;--success: #166534;--shadow: 0 12px 40px rgba(31, 28, 23, .08)}*{box-sizing:border-box}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--text);background:radial-gradient(circle at 10% 10%,rgba(15,118,110,.08),transparent 40%),radial-gradient(circle at 90% 0%,rgba(180,35,24,.06),transparent 35%),var(--bg)}button,select{font:inherit}.app-shell{max-width:980px;margin:0 auto;padding:24px 16px 40px}.app-header,.app-topbar{display:grid;gap:16px;grid-template-columns:1fr;margin-bottom:16px}.app-header h1,.app-topbar h1{margin:4px 0 6px;font-size:clamp(1.4rem,2.2vw,2rem);line-height:1.1}.topbar-actions{display:flex;align-items:center;justify-content:flex-start;gap:10px}.install-state{color:var(--muted);font-size:.9rem}.route-tabs{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:16px}.route-tab{text-align:left;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:12px 14px;display:grid;gap:4px;box-shadow:var(--shadow)}.route-tab.active{border-color:#0f766e59;background:#0f766e14}.route-tab span{font-weight:700;color:var(--text)}.route-tab small{color:var(--muted);font-size:.82rem}.module-stack{display:grid;gap:0}.module-header-row{display:grid;gap:14px;grid-template-rows:1fr;margin-bottom:16px}@media screen and (max-width: 768px){.module-header-row{grid-template-columns:1fr}}.module-title{margin:4px 0 6px;font-size:1.25rem;line-height:1.15}.eyebrow{margin:0;color:var(--accent-2);font-weight:700;letter-spacing:.02em;font-size:.9rem}.subtle{margin:0;color:var(--muted);line-height:1.4}.header-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:end}.mode-toggle{display:flex;gap:8px;align-items:center}.select-wrap{display:grid;gap:6px;color:var(--muted);font-size:.9rem}.select-wrap select{min-width:180px;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--panel)}button{border:1px solid transparent;border-radius:10px;padding:10px 14px;cursor:pointer;transition:transform .06s ease,background-color .15s ease,border-color .15s ease}button:active{transform:translateY(1px)}button:disabled{opacity:.55;cursor:not-allowed;transform:none}button.primary{background:var(--accent);color:#fff}button.primary:hover:not(:disabled){background:var(--accent-2)}button.ghost{background:var(--panel);border-color:var(--line);color:var(--text)}button.ghost:hover:not(:disabled){background:var(--panel-2)}button.ghost.danger{color:var(--danger)}.stats-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-bottom:16px}.stat-box{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:12px 14px;box-shadow:var(--shadow)}.stat-box span{display:block;color:var(--muted);font-size:.85rem;margin-bottom:6px}.stat-box strong{font-size:1.35rem}.quiz-card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow)}.quiz-card-head{display:flex;justify-content:space-between;gap:12px;align-items:start}.quiz-card-head h2{margin:8px 0 0;font-size:1.05rem}.badge{display:inline-flex;align-items:center;border:1px solid rgba(15,118,110,.25);color:var(--accent-2);background:#0f766e14;border-radius:999px;padding:4px 10px;font-weight:700;font-size:.8rem}.badge-text{padding:0 0 8px}.source-hint{color:var(--muted);font-size:.85rem;white-space:nowrap}.quiz-card-head-tools{display:flex;align-items:center;gap:8px}.tts-btn{min-width:38px;padding:6px 10px;line-height:1}.tts-rate-wrap{display:inline-flex;align-items:center}.tts-rate-wrap select{min-width:72px;padding:6px 8px;border-radius:8px;border:1px solid var(--line);background:var(--panel);color:var(--text)}.question-prompt{margin:16px 0;background:var(--panel-2);border:1px solid var(--line);border-radius:14px;padding:14px;line-height:1.5}.options-grid{display:grid;grid-template-columns:1fr;gap:10px}.match-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:10px;margin-top:12px;align-items:start}.match-column{display:grid;gap:8px;min-width:0}.match-item{text-align:left;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;min-height:48px;width:100%;min-width:0;white-space:normal;overflow-wrap:anywhere;word-break:break-word;line-height:1.3}.match-item:hover:not(:disabled){background:#fcfaf4;border-color:#bfb5a0}.match-item.selected{border-color:#8fb7b3;background:#0f766e14}.match-item.matched{border-color:#16653459;background:#16653414}.match-item.wrong{border-color:#b4231859;background:#b4231814}.option-btn{text-align:left;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px;display:grid;gap:4px}.option-btn:hover:not(:disabled){background:#fcfaf4;border-color:#bfb5a0}.option-btn.selected{border-color:#8fb7b3}.option-btn.correct{border-color:#16653459;background:#16653414}.option-btn.wrong{border-color:#b4231859;background:#b4231814}.option-term{font-weight:600;line-height:1.35}.option-meta{font-size:.82rem;color:var(--muted)}.quiz-footer{margin-top:14px;display:grid;gap:12px}.feedback{color:var(--muted);line-height:1.4}.feedback strong{color:var(--text)}.feedback-secondary{display:inline-block;margin-top:4px}@media (max-width: 640px){.match-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px}.match-column{gap:6px}.match-item{padding:9px 10px;min-height:44px;font-size:.92rem}}.source-details{margin-top:12px;color:var(--muted)}.source-details summary{cursor:pointer;-webkit-user-select:none;user-select:none}.source-details code{display:block;margin-top:8px;padding:8px 10px;border-radius:10px;background:#f2eee4;border:1px solid var(--line);color:#473f32;overflow-wrap:anywhere}.source-details p{margin:10px 0 0;line-height:1.45;color:var(--text)}@media (min-width: 700px){.app-header,.app-topbar{grid-template-columns:1fr auto;align-items:end}.module-header-row{grid-template-rows:1fr auto;align-items:end}@media screen and (max-width: 768px){.module-header-row{grid-template-columns:1fr}}.stats-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.english-stats-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.options-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.quiz-footer{grid-template-columns:1fr auto;align-items:center}}@media (max-width: 520px){.route-tabs{grid-template-columns:1fr}}