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h3{margin-bottom:4px;font-size:1.1rem}.subject-card-head{display:flex;align-items:flex-start;gap:10px;margin-bottom:4px;min-width:0}.subject-card-head h3{margin:0;min-width:0;overflow-wrap:anywhere;line-height:1.3}.subject-folder-icon{width:22px;height:22px;object-fit:contain;filter:brightness(0) invert(1);opacity:.92}.card p{color:var(--muted);font-size:.85rem;overflow-wrap:anywhere}.view-btn{margin-top:auto;margin-bottom:0;width:100%;padding:10px;background:var(--panel-strong);border:1px solid var(--stroke);border-radius:var(--radius-sm);color:var(--text);font-weight:600;font-size:.85rem;transition:color .22s var(--ease-out),border-color .22s var(--ease-out),transform .16s var(--ease-out);--hover-fill-color: var(--button-accent);--hover-text-color: var(--bg);--hover-border-color: var(--button-accent)}.view-btn:focus-visible{outline:2px solid 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forwards}.viewer-meta{min-width:0}.viewer-title{font-size:1.16rem;line-height:1.2}.viewer-subtitle{margin-top:4px;font-size:.82rem;color:var(--muted)}.viewer-header h2,.viewer-header p{overflow-wrap:anywhere}.viewer-controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}.zoom-control{display:flex;align-items:center;gap:8px;background:#0f0f0feb;border:1px solid var(--stroke);border-radius:999px;padding:5px 8px;box-shadow:inset 0 0 0 1px #ffffff0a}.zoom-button{width:28px;height:28px;border-radius:50%;background:#ffffff0a;color:var(--text);border:1px solid rgba(255,255,255,.14);font-size:.9rem;font-weight:700;display:inline-flex;align-items:center;justify-content:center;transition:transform .16s var(--ease-out),color .2s var(--ease-out),border-color .2s var(--ease-out);--hover-fill-color: var(--panel-soft);--hover-border-color: var(--stroke-strong)}.zoom-button:active{transform:scale(.94)}.zoom-slider{width:170px;-webkit-appearance:none;-moz-appearance:none;appearance:none;height:6px;border-radius:999px;background:linear-gradient(90deg,rgba(245,245,245,.92) 0%,rgba(245,245,245,.92) var(--zoom-progress, 18%),rgba(255,255,255,.18) var(--zoom-progress, 18%),rgba(255,255,255,.18) 100%);border:1px solid rgba(255,255,255,.08);outline:none}.zoom-slider::-webkit-slider-runnable-track{height:6px;border-radius:999px;background:transparent}.zoom-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:14px;height:14px;margin-top:-4px;border-radius:50%;background:#fff;border:2px solid #0f0f0f;box-shadow:0 0 0 2px #ffffff3d}.zoom-slider::-moz-range-track{height:6px;border-radius:999px;background:#ffffff2e}.zoom-slider::-moz-range-progress{height:6px;border-radius:999px;background:#f5f5f5eb}.zoom-slider::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:#fff;border:2px solid #0f0f0f;box-shadow:0 0 0 2px #ffffff3d}.zoom-value{min-width:36px;text-align:center;font-size:.72rem;font-weight:700;color:#f5f5f5e0;letter-spacing:.02em}@keyframes slideDown{to{transform:translateY(0)}}.viewer-content{flex:1;overflow-y:auto;padding:18px 20px 36px;display:flex;flex-direction:column;align-items:center;gap:10px;--viewer-page-max: min(520px, calc(100vw - 40px) )}@media (min-width: 769px){.viewer-content{scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.28) transparent}.viewer-content::-webkit-scrollbar{width:7px}.viewer-content::-webkit-scrollbar-track{background:transparent}.viewer-content::-webkit-scrollbar-thumb{background:#ffffff42;border-radius:999px;border:1px solid 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