.battery-demo{background:var(--pale);border-block:1px solid var(--line)}
.battery-demo-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-template-rows:auto minmax(0,1fr) auto;grid-template-areas:"viewer heading" "viewer panel" "viewer meta";column-gap:clamp(32px,4vw,64px);row-gap:28px}
.battery-demo .battery-demo-heading{grid-area:heading;display:block;min-width:0;margin:0;padding-top:14px}
.battery-demo-heading .eyebrow{margin-bottom:20px}
.battery-demo-heading h2{max-width:9em;font-size:clamp(30px,2.7vw,42px);line-height:1.35;text-wrap:balance;letter-spacing:-.025em}
.battery-demo-heading h2>[data-zh]{white-space:nowrap}
.battery-demo-panel{grid-area:panel;min-width:0;align-self:center;padding-block:6px}
.battery-demo-viewer{grid-area:viewer;min-width:0;align-self:start;border:1px solid var(--line);background:#f0f0f0;overflow:hidden}
.battery-demo-screen{aspect-ratio:4/3;position:relative}
.battery-demo-screen video{position:absolute;width:100%;height:100%;inset:0;object-fit:contain}
.battery-demo-toolbar{display:flex;align-items:center;gap:24px;padding:16px 24px;background:#fff;border-top:1px solid var(--line)}
.battery-demo-controls{display:flex;flex:1;min-width:0;gap:16px;align-items:center;font-size:14px}
.battery-demo-controls button{border:0;background:none;padding:4px;min-width:52px;min-height:44px;color:var(--ink)}
.battery-demo-controls button:disabled{color:var(--muted);cursor:default}
.battery-demo-controls progress{appearance:none;border:0;height:4px;flex:1;width:0;background:#dfe2e5;accent-color:var(--red)}
.battery-demo-controls progress::-webkit-progress-bar{background:#dfe2e5}
.battery-demo-controls progress::-webkit-progress-value{background:var(--red)}
.battery-demo-controls progress::-moz-progress-bar{background:var(--red)}
.battery-demo-controls>span{font-variant-numeric:tabular-nums;white-space:nowrap;color:var(--muted)}
.battery-demo-steps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;list-style:none;padding:0;margin:0 0 28px;font-size:16px;line-height:1.5;color:var(--muted)}
.battery-demo-steps li{min-width:0;padding:0 0 16px;border-bottom:2px solid #d8dde1}
.battery-demo-steps li[aria-current]{border-color:var(--red);color:var(--red);font-weight:600}
.battery-demo-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px 24px}
.battery-demo-actions .btn{min-width:0;justify-content:center;gap:8px;white-space:normal;min-height:52px;padding:12px 24px;font-size:15px;text-align:center}
.battery-demo-actions .btn-outline{padding-inline:0;border-color:transparent;background:transparent;color:var(--muted);font-weight:500}
.battery-demo-actions .btn-outline:hover{color:var(--red);background:transparent;text-decoration:underline;text-underline-offset:5px}
.battery-demo-actions [data-bv="enter"][hidden]+[data-bv="replay"]{padding-inline:32px;background:var(--red);border-color:var(--red);color:#fff;font-weight:600;text-decoration:none}
.battery-demo-actions [data-bv="enter"][hidden]+[data-bv="replay"]:hover{background:var(--red-dark);border-color:var(--red-dark)}
.battery-demo-actions button:disabled{background:#e2e5e8;border-color:#e2e5e8;color:#697077;cursor:default}
.battery-demo-status{font-size:13px;line-height:1.65;margin:16px 0 0}
.battery-demo-meta{grid-area:meta;display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);align-items:center;gap:24px;padding-top:24px;border-top:1px solid var(--line)}
.battery-demo-meta .text-link{min-width:0;justify-content:space-between;gap:12px;font-size:15px;line-height:1.6}
.battery-demo-meta .text-link>span[aria-hidden]{flex-shrink:0}
.battery-demo-note{min-width:0;font-size:13px;line-height:1.85;color:#697581;margin:0}
@media(max-width:1100px){.battery-demo-grid{row-gap:24px}.battery-demo .battery-demo-heading{padding-top:0}.battery-demo-meta{grid-template-columns:minmax(0,1fr);gap:14px;padding-top:20px}.battery-demo-meta .text-link{justify-content:flex-start}.battery-demo-steps{font-size:14px;gap:16px;margin-bottom:24px}.battery-demo-actions{gap:8px 20px}.battery-demo-actions .btn{font-size:14px}}
@media(max-width:800px){.battery-demo-grid{grid-template-columns:minmax(0,1fr);grid-template-rows:auto;grid-template-areas:"heading" "viewer" "panel" "meta";gap:28px}.battery-demo-heading h2{max-width:none;font-size:30px}.battery-demo-heading .eyebrow{margin-bottom:12px}.battery-demo-panel{padding:0}.battery-demo-meta{grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:24px}}
@media(max-width:640px){.battery-demo-grid{gap:24px}.battery-demo-heading h2{font-size:28px}.battery-demo-toolbar{padding:12px 14px;gap:12px}.battery-demo-controls{gap:12px}.battery-demo-steps{margin-bottom:20px}.battery-demo-steps li{padding-bottom:12px}.battery-demo-actions .btn{padding:10px 18px}.battery-demo-actions .btn-outline{padding-inline:0}.battery-demo-meta{grid-template-columns:minmax(0,1fr);gap:14px}.battery-demo-note{font-size:13px}}