.demo-shell{max-width:704px;padding-bottom:48px}.demo-shell>h1{font-size:1.5rem;margin-top:20px}.demo-shell>.scope{margin:12px 0 24px}.demo-toolbar{display:flex;justify-content:space-between;gap:8px;align-items:center;flex-wrap:wrap}.demo-toolbar nav{display:flex;gap:8px;flex-wrap:wrap}.tab,.small-button{min-height:48px;border:1px solid var(--pc-control-border);border-radius:12px;padding:10px 16px;background:var(--surface);color:var(--ink);font-size:.875rem}.tab[aria-pressed=true]{background:var(--pc-primary-container);border:2px solid var(--primary);color:var(--primary);font-weight:600}.demo-panel{padding:16px 0;min-width:0}.study-card{max-width:640px;text-align:center;padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:16px}.card-top{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:.875rem}.study-card>.hanzi{display:block;font-size:3rem;line-height:1.333;margin:24px 0 8px}.study-card .pinyin{margin-top:8px}.study-card .meaning{margin-top:12px}.recall-hint{padding:16px 0;color:var(--muted)}.study-controls{display:flex;gap:8px;flex-wrap:wrap;margin:16px auto}.study-controls>*{flex:1;min-width:0}.card-nav{display:flex;align-items:center;justify-content:space-between;gap:8px;margin:16px auto}.extra{margin:16px 0}.extra summary{cursor:pointer;min-height:48px;padding-block:12px;color:var(--muted)}.input-panel{margin:16px 0}.input-panel>label,.editor-card label{display:block;font-size:.875rem;font-weight:600;margin:12px 0 6px}.input-panel textarea,.editor-card textarea{width:100%;min-height:56px;border:1px solid var(--pc-control-border);border-radius:8px;padding:12px;background:var(--surface);color:var(--ink);resize:vertical;line-height:1.625}.input-panel .actions{margin:12px 0}.editor-list{display:grid;grid-template-columns:1fr;gap:16px;margin:24px 0}.editor-card{min-width:0;border:1px solid var(--border);padding:20px;border-radius:16px;background:var(--surface)}.editor-head{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}.editor-head>div{display:flex;gap:8px}.editor-card .scope{margin-top:12px}.editor-card [data-action=reviewed]{margin-top:8px;border-color:var(--pc-warning);color:var(--pc-warning)}.completion,.empty{display:flex;flex-direction:column;align-items:flex-start;gap:16px;padding:24px 0}.complete-mark{color:var(--pc-success);font-size:2rem}.completion h2,.empty h2{font-size:1.5rem}.demo-note{font-size:.875rem;color:var(--muted)}.demo-note button{margin-top:12px}.demo-note span{display:block;font-size:.75rem}.demo-panel>pre{white-space:pre-wrap;overflow-wrap:anywhere;border:1px solid var(--border);background:var(--surface);padding:20px}.sample-photos{display:grid;grid-template-columns:1fr 1fr;gap:16px}.sample-photos figure{margin:0}.sample-photos figcaption{font-size:.875rem;color:var(--muted)}@media(max-width:599px){.study-controls{flex-direction:column}.study-controls>*{width:100%}.sample-photos{grid-template-columns:1fr}.editor-card{padding:16px}.study-card{padding:20px}.demo-toolbar{align-items:stretch}}