:root{--demo-bg: #f7f8fb;--demo-card-bg: #ffffff;--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{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--demo-bg);color:var(--demo-text);line-height:1.5}.demo-page{max-width:880px;margin:0 auto;padding:32px 24px 80px}.demo-page>header{padding-bottom:24px;border-bottom:1px solid var(--demo-border);margin-bottom:24px}.demo-page h1{margin:0 0 8px;font-size:24px}.demo-page>header p{margin:0;color:var(--demo-muted)}.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;padding:20px 24px;margin:0 0 24px;box-shadow:0 1px 2px #00000008}.demo-card h2{margin:0 0 16px;font-size:18px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}.demo-card h3{margin:0 0 8px;font-size:13px;color:var(--demo-muted);font-weight:500}.demo-tag{background:var(--demo-tag-bg);color:var(--demo-tag-fg);font-size:11px;font-weight:500;padding:2px 8px;border-radius:999px}.demo-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:12px}.demo-label{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--demo-muted)}.demo-btn{background:var(--demo-card-bg);border:1px solid var(--demo-border);border-radius:6px;padding:6px 12px;font-size:13px;cursor:pointer;color:var(--demo-text);font-family:inherit}.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);border-radius:6px;padding:6px 10px;font-size:14px;font-family:inherit;background:var(--demo-card-bg);color:var(--demo-text);min-width:140px}.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{display:inline-block;min-width:60px;text-align:center;font-variant-numeric:tabular-nums;font-size:22px;font-weight:600;color:var(--demo-accent)}.demo-note{margin:16px 0 0;padding:12px 14px;background:var(--demo-bg);border-left:3px solid var(--demo-accent);border-radius:4px;font-size:13px;color:var(--demo-muted)}.demo-note code{background:#1a76b814;color:var(--demo-accent);padding:0 4px;border-radius:3px;font-size:.95em}.demo-tick-line{margin:8px 0;font-size:13px;color:var(--demo-muted);font-variant-numeric:tabular-nums}.demo-badge{display:inline-flex;min-width:22px;height:22px;align-items:center;justify-content:center;background:var(--demo-accent);color:#fff;border-radius:999px;padding:0 6px;font-size:11px;font-weight:600;font-variant-numeric:tabular-nums}.demo-cart-add-row{margin-top:4px}.demo-cart-list{list-style:none;margin:12px 0;padding:0;border:1px solid var(--demo-border);border-radius:6px;background:var(--demo-bg)}.demo-cart-empty{padding:16px;text-align:center;color:var(--demo-muted);font-style:italic;font-size:13px}.demo-cart-row{display:flex;align-items:center;gap:12px;padding:8px 12px;border-bottom:1px solid var(--demo-border)}.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{display:flex;justify-content:space-between;padding:12px 14px;background:var(--demo-accent-soft);border-radius:6px;margin-top:8px;font-variant-numeric:tabular-nums;font-size:15px}.demo-letter-list{list-style:none;margin:8px 0;padding:0;display:flex;flex-wrap:wrap;gap:4px}.demo-letter{display:inline-flex;width:28px;height:28px;align-items:center;justify-content:center;background:var(--demo-accent-soft);border:1px solid var(--demo-accent);border-radius:4px;font-family:ui-monospace,SFMono-Regular,monospace;font-size:14px;color:var(--demo-accent)}.demo-keyed-list{list-style:none;margin:12px 0 0;padding:0;border:1px solid var(--demo-border);border-radius:6px;background:var(--demo-bg)}.demo-keyed-row{display:flex;align-items:center;gap:10px;padding:8px 12px;border-bottom:1px solid var(--demo-border)}.demo-keyed-row:last-child{border-bottom:none}.demo-keyed-label{min-width:80px;font-weight:500;font-size:13px}.demo-skip-mount{margin:12px 0}.demo-skip-widget{display:flex;align-items:center;gap:10px;background:linear-gradient(180deg,#fde68a,#fbbf24);border:1px dashed #92400e;padding:10px 14px;border-radius:6px;font-size:13px;color:#78350f}.demo-skip-dot{display:inline-block;width:10px;height:10px;background:#b91c1c;border-radius:999px;transition:transform .1s linear}.demo-svg-cell{display:flex;flex-direction:column;align-items:center;padding:12px;background:var(--demo-bg);border-radius:6px}.demo-svg{display:block}.demo-angle-value{display:inline-block;min-width:48px;text-align:right;font-variant-numeric:tabular-nums;color:var(--demo-muted);font-size:13px}.demo-tier2-row .demo-input{flex:1}