:root{--demo-bg:#f7f8fb;--demo-card-bg:#fff;--demo-border:#d8dde6;--demo-text:#1f2937;--demo-muted:#6b7280;--demo-accent:#1a76b8;--demo-accent-soft:#e0f2fe;--demo-warn:#b91c1c;--demo-warn-soft:#fee2e2;--demo-tag-bg:#eef2ff;--demo-tag-fg:#4338ca}*{box-sizing:border-box}body{background:var(--demo-bg);color:var(--demo-text);margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5}.demo-page{max-width:880px;margin:0 auto;padding:32px 24px 80px}.demo-page>header{border-bottom:1px solid var(--demo-border);margin-bottom:24px;padding-bottom:24px}.demo-page h1{margin:0 0 8px;font-size:24px}.demo-page>header p{color:var(--demo-muted);margin:0}.demo-page>header code{background:var(--demo-card-bg);border:1px solid var(--demo-border);border-radius:4px;padding:1px 6px;font-size:.9em}.demo-card{background:var(--demo-card-bg);border:1px solid var(--demo-border);border-radius:8px;margin:0 0 24px;padding:20px 24px;box-shadow:0 1px 2px #00000008}.demo-card h2{flex-wrap:wrap;align-items:center;gap:12px;margin:0 0 16px;font-size:18px;display:flex}.demo-card h3{color:var(--demo-muted);margin:0 0 8px;font-size:13px;font-weight:500}.demo-tag{background:var(--demo-tag-bg);color:var(--demo-tag-fg);border-radius:999px;padding:2px 8px;font-size:11px;font-weight:500}.demo-row{flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:12px;display:flex}.demo-label{color:var(--demo-muted);align-items:center;gap:8px;font-size:13px;display:inline-flex}.demo-btn{background:var(--demo-card-bg);border:1px solid var(--demo-border);cursor:pointer;color:var(--demo-text);border-radius:6px;padding:6px 12px;font-family:inherit;font-size:13px}.demo-btn:hover{background:var(--demo-accent-soft);border-color:var(--demo-accent)}.demo-btn:active{transform:translateY(1px)}.demo-btn-ghost{color:var(--demo-muted)}.demo-btn-tiny{padding:2px 6px;font-size:11px}.demo-btn-warn{background:var(--demo-warn-soft);border-color:var(--demo-warn);color:var(--demo-warn)}.demo-btn-warn:hover{background:var(--demo-warn);color:#fff}.demo-input{border:1px solid var(--demo-border);background:var(--demo-card-bg);color:var(--demo-text);border-radius:6px;min-width:140px;padding:6px 10px;font-family:inherit;font-size:14px}.demo-input:focus{outline:2px solid var(--demo-accent);outline-offset:-1px;border-color:var(--demo-accent)}.demo-input-inline{flex:1;min-width:80px}.demo-slider{width:200px}.demo-counter-value{text-align:center;font-variant-numeric:tabular-nums;min-width:60px;color:var(--demo-accent);font-size:22px;font-weight:600;display:inline-block}.demo-note{background:var(--demo-bg);border-left:3px solid var(--demo-accent);color:var(--demo-muted);border-radius:4px;margin:16px 0 0;padding:12px 14px;font-size:13px}.demo-note code{color:var(--demo-accent);background:#1a76b814;border-radius:3px;padding:0 4px;font-size:.95em}.demo-tick-line{color:var(--demo-muted);font-variant-numeric:tabular-nums;margin:8px 0;font-size:13px}.demo-badge{background:var(--demo-accent);color:#fff;font-variant-numeric:tabular-nums;border-radius:999px;justify-content:center;align-items:center;min-width:22px;height:22px;padding:0 6px;font-size:11px;font-weight:600;display:inline-flex}.demo-cart-add-row{margin-top:4px}.demo-cart-list{border:1px solid var(--demo-border);background:var(--demo-bg);border-radius:6px;margin:12px 0;padding:0;list-style:none}.demo-cart-empty{text-align:center;color:var(--demo-muted);padding:16px;font-size:13px;font-style:italic}.demo-cart-row{border-bottom:1px solid var(--demo-border);align-items:center;gap:12px;padding:8px 12px;display:flex}.demo-cart-row:last-child{border-bottom:none}.demo-cart-name{flex:1}.demo-cart-price{font-variant-numeric:tabular-nums;color:var(--demo-muted);font-size:13px}.demo-cart-total{background:var(--demo-accent-soft);font-variant-numeric:tabular-nums;border-radius:6px;justify-content:space-between;margin-top:8px;padding:12px 14px;font-size:15px;display:flex}.demo-letter-list{flex-wrap:wrap;gap:4px;margin:8px 0;padding:0;list-style:none;display:flex}.demo-letter{background:var(--demo-accent-soft);border:1px solid var(--demo-accent);width:28px;height:28px;color:var(--demo-accent);border-radius:4px;justify-content:center;align-items:center;font-family:ui-monospace,SFMono-Regular,monospace;font-size:14px;display:inline-flex}.demo-keyed-list{border:1px solid var(--demo-border);background:var(--demo-bg);border-radius:6px;margin:12px 0 0;padding:0;list-style:none}.demo-keyed-row{border-bottom:1px solid var(--demo-border);align-items:center;gap:10px;padding:8px 12px;display:flex}.demo-keyed-row:last-child{border-bottom:none}.demo-keyed-row--selected{background:#fef3c7}.demo-keyed-label{min-width:80px;font-size:13px;font-weight:500}.demo-arraysig-list{max-height:320px;overflow-y:auto}.demo-select-row{cursor:pointer;transition:background .12s}.demo-select-row:hover{background:var(--demo-accent-soft)}.demo-select-row-on{background:#fef3c7}.demo-select-row-on:hover{background:#fde68a}.demo-select-hint{color:var(--demo-muted);margin-left:auto;font-size:11px}.demo-binding-status{margin-top:12px}.demo-render-count{color:var(--demo-accent);background:var(--demo-accent-soft);border-radius:4px;padding:1px 6px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:700}.demo-skip-mount{margin:12px 0}.demo-skip-widget{color:#78350f;background:linear-gradient(#fde68a,#fbbf24);border:1px dashed #92400e;border-radius:6px;align-items:center;gap:10px;padding:10px 14px;font-size:13px;display:flex}.demo-skip-dot{background:#b91c1c;border-radius:999px;width:10px;height:10px;transition:transform .1s linear;display:inline-block}.demo-svg-cell{background:var(--demo-bg);border-radius:6px;flex-direction:column;align-items:center;padding:12px;display:flex}.demo-svg{display:block}.demo-angle-value{text-align:right;font-variant-numeric:tabular-nums;min-width:48px;color:var(--demo-muted);font-size:13px;display:inline-block}.demo-tier2-row .demo-input{flex:1}