:root{--bg: #fafafa;--panel: #ffffff;--ink: #1a1a1a;--muted: #6b7280;--line: #e5e7eb;--accent: #2563eb;--accent-soft: #eff6ff;--success: #16a34a;--error: #dc2626;--stage: #f3f4f6;--code-bg: #111827;--code-ink: #e5e7eb;--radius: 12px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;--mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace}*{box-sizing:border-box}body{margin:0;font-family:var(--font);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}.app{min-height:100vh;display:flex;flex-direction:column}.topbar{background:var(--panel);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.topbar-inner{max-width:1200px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand h1{margin:0;font-size:20px;font-weight:700;letter-spacing:-.01em}.brand p{margin:2px 0 0;font-size:13px;color:var(--muted)}.topbar-links{display:flex;align-items:center;gap:14px}.topbar-links a{color:var(--ink);text-decoration:none;font-size:14px;font-weight:600}.topbar-links a:hover{color:var(--accent)}.topbar-links img{display:block}.sponsor-btn{background:#ff69b4;color:#fff!important;padding:7px 14px;border-radius:999px;font-size:13px!important}.layout{max-width:1200px;margin:0 auto;padding:20px;width:100%;display:grid;grid-template-columns:260px 1fr;gap:20px;align-items:start;flex:1}.sidebar{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:8px;position:sticky;top:86px;max-height:calc(100vh - 110px);overflow-y:auto}.family{border-bottom:1px solid var(--line)}.family:last-child{border-bottom:none}.family-head{width:100%;display:flex;justify-content:space-between;align-items:center;background:none;border:none;padding:10px 8px;font-size:14px;font-weight:600;color:var(--ink);cursor:pointer;text-align:left}.family-head:hover{color:var(--accent)}.family-count{font-size:11px;font-weight:700;color:var(--muted);background:var(--stage);border-radius:999px;padding:2px 8px}.demo-list{list-style:none;margin:0 0 6px;padding:0}.demo-link{width:100%;background:none;border:none;text-align:left;padding:7px 8px 7px 16px;font-size:13px;color:var(--muted);cursor:pointer;border-radius:8px}.demo-link:hover{background:var(--stage);color:var(--ink)}.demo-link.active{background:var(--accent-soft);color:var(--accent);font-weight:600}.mobile-nav{grid-column:1 / -1}.mobile-nav select{width:100%;min-height:44px;padding:10px 12px;font-size:16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel)}.main{min-width:0}.demo{display:flex;flex-direction:column;gap:16px}.demo-head h2{margin:0;font-size:24px;letter-spacing:-.01em}.demo-head p{margin:6px 0 0;color:var(--muted);font-size:14px;max-width:640px}.demo-stage{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px;min-height:220px;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}.demo-controls{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;display:flex;flex-wrap:wrap;gap:12px 24px;align-items:end}.demo-code{background:var(--code-bg);border-radius:var(--radius);overflow:hidden}.demo-code-bar{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;color:var(--code-ink);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;border-bottom:1px solid #374151}.demo-code pre{margin:0;padding:16px;overflow-x:auto}.demo-code code{font-family:var(--mono);font-size:13px;line-height:1.6;color:var(--code-ink);white-space:pre}.ctl{display:flex;flex-direction:column;gap:6px;min-width:140px}.ctl-row{flex-direction:row;align-items:center;gap:8px}.ctl-label{font-size:12px;font-weight:600;color:var(--muted);display:flex;justify-content:space-between;gap:12px}.ctl-label b{color:var(--ink);font-weight:700}.ctl input[type=range]{width:100%;min-height:44px;accent-color:var(--accent);cursor:pointer}.ctl input[type=range]::-webkit-slider-thumb{width:24px;height:24px}.ctl input[type=range]::-moz-range-thumb{width:24px;height:24px}.ctl input[type=text],.ctl select{padding:8px 10px;font-size:16px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--ink)}.ctl input[type=checkbox]{width:16px;height:16px;accent-color:var(--accent)}.btn{border:none;border-radius:8px;padding:9px 16px;min-height:44px;font-size:14px;font-weight:600;cursor:pointer}.btn:focus-visible,a:focus-visible,.demo-link:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:#1d4ed8}.btn-ghost{background:var(--stage);color:var(--ink)}.btn-ghost:hover{background:var(--line)}.btn-sm{padding:5px 10px;font-size:12px}.empty{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:60px 24px;text-align:center;color:var(--muted)}.stage-box{width:72px;height:72px;border-radius:16px;background:linear-gradient(135deg,#3b82f6,#8b5cf6);box-shadow:0 8px 24px #3b82f659}.stage-panel{width:100%;max-width:560px;border-radius:16px;background:var(--bg);border:1px solid var(--line);padding:20px 24px;text-align:left;color:var(--ink);box-shadow:none}.stage-badge{display:inline-block;border-radius:8px;background:var(--accent-soft);color:var(--accent);font-weight:600;padding:4px 10px;font-size:.875rem;white-space:nowrap}.stage-row{display:flex;gap:16px;align-items:center;justify-content:center;flex-wrap:wrap}.stage-col{display:flex;flex-direction:column;gap:12px;align-items:center}.kbd{font-family:var(--mono);font-size:12px;background:var(--stage);border:1px solid var(--line);border-radius:6px;padding:2px 6px}@media(max-width:860px){.layout{grid-template-columns:1fr}.topbar-inner{flex-direction:column;align-items:flex-start}.demo-stage{padding:16px;min-height:180px}}.pricing-grid{grid-template-columns:repeat(3,1fr)}@media(max-width:600px){.pricing-grid{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important}}