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var(--speed)}.stack-legend{display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--text-secondary);margin-top:8px}.stack-legend .li{display:inline-flex;align-items:center;gap:6px}.toggle-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px solid var(--border);font-size:14.5px}.toggle-row:last-child{border-bottom:none}.toggle{position:relative;width:42px;height:24px;flex:0 0 auto;cursor:pointer}.toggle input{opacity:0;position:absolute;top:0;right:0;bottom:0;left:0;cursor:pointer}.toggle .knob{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--border-strong);border-radius:999px;transition:background .15s ease}.toggle .knob:after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;background:#fff;border-radius:50%;transition:transform .15s ease}.toggle input:checked+.knob{background:var(--accent)}.toggle input:checked+.knob:after{transform:translate(18px)}.guide-section{margin:22px 0}.guide-section h3{font-size:18px;margin-bottom:8px}.guide-section p{font-size:16px;margin:8px 0}.s1-table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius-sm);margin-top:10px}table.s1{width:100%;border-collapse:collapse;min-width:460px;background:var(--card)}table.s1 th{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint);padding:10px 12px;border-bottom:1px solid var(--border);text-align:left;cursor:help;background:#fbfaf8;white-space:nowrap}table.s1 td{padding:9px 12px;border-bottom:1px solid var(--border);font-size:14px;cursor:help}table.s1 td.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap}.glossary-list{display:grid;gap:12px;margin-top:16px}.glossary-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow)}.glossary-item h4{font-size:16px;margin-bottom:4px}.glossary-item p{font-size:15px;color:var(--text);margin:4px 0}.glossary-item .ex{font-family:var(--font-mono);font-size:13px;color:var(--text-secondary);background:var(--neutral-soft);border-radius:6px;padding:8px 10px;margin-top:8px}.search-box{margin:14px 0 4px}.delta-table{width:100%;border-collapse:collapse;font-size:14px}.delta-table th{text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-faint);padding:6px 8px;border-bottom:1px solid var(--border)}.delta-table td{padding:6px 8px;border-bottom:1px solid var(--border)}.delta-table td.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap}.notice{border:1px solid var(--border);border-left:4px solid var(--amber, #b7791f);background:#fbf7ec;border-radius:var(--radius-sm);padding:12px 16px;font-size:14px;color:var(--text);margin:12px 0}.notice.info{border-left-color:var(--accent);background:var(--accent-soft)}.footer-links{margin-top:34px;padding-top:16px;border-top:1px solid var(--border);font-size:13px;color:var(--text-secondary)}.src-list{list-style:none;margin:8px 0}.src-list li{margin:4px 0}.src-list a{font-size:13.5px;word-break:break-all}.empty{color:var(--text-secondary);font-size:15px;padding:18px 0}@media (max-width: 480px){body{font-size:17px}.reading .scene-body p,.reading .lesson-body p,.reading .card>p,.reading .guide-section p{font-size:24px;line-height:1.45}.terms-grid{grid-template-columns:1fr}.topbar-inner{padding:10px 14px;gap:10px}.mode-nav{order:3;width:100%}.resume-chip{margin-left:auto}.card{padding:16px}}