*{box-sizing:border-box}body{margin:0;background:#f5f7fb;color:#172a42;font:15px/1.65 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}header,main,footer{max-width:960px;margin:auto;padding:24px}header{display:flex;align-items:center;justify-content:space-between}.brand{font-size:24px;font-weight:850;font-style:italic}.brand small{font-size:13px;margin-left:4px}.back{font-size:13px;color:#52657d}.hero{padding:34px 0 24px}.eyebrow{color:#2587df;font-size:12px;font-weight:700;letter-spacing:2px}h1{font-size:38px;line-height:1.2;letter-spacing:-1px;margin:12px 0}.intro{color:#687a91;margin:0}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 28px}.tabs a{padding:9px 19px;border:1px solid #e1e8f1;border-radius:10px;background:white;color:#61728a}.tabs a[aria-current]{background:#2489ed;border-color:#2489ed;color:white}.cards{display:grid;grid-template-columns:minmax(0,1fr);gap:16px}.card{background:#fff;border:1px solid #e2e8f1;border-radius:18px;padding:24px;display:grid;grid-template-columns:54px minmax(0,1fr) auto;gap:18px;align-items:start}.icon{width:54px;height:54px;background:#eaf4ff;color:#2489ed;border-radius:14px;display:grid;place-items:center;font-size:24px;font-weight:750}h2{font-size:19px;line-height:1.4;margin:0 0 5px}.meta{color:#64758c;font-size:13px}.desc{margin:8px 0 12px;color:#53677f;font-size:14px}.download{background:#2489ed;color:#fff;border-radius:10px;padding:11px 20px;font-weight:650;white-space:nowrap;display:inline-block}.download:hover{background:#146fc5}a:focus-visible,summary:focus-visible{outline:3px solid #f2ae35;outline-offset:4px}details{font-size:12px;color:#7b8a9e}summary{cursor:pointer;display:list-item}code{display:block;overflow-wrap:anywhere;margin-top:8px;font:11px/1.7 ui-monospace,monospace}.help{margin-top:28px;background:#eaf3fd;border:1px solid #dceafb;border-radius:16px;padding:22px}.help h2{font-size:16px}.help ol{margin:8px 0 0;padding-left:22px;color:#52677e}footer{font-size:12px;color:#8895a6;display:flex;justify-content:space-between;gap:12px;padding-top:12px;padding-bottom:35px}@media(max-width:600px){header,main,footer{padding-left:20px;padding-right:20px}.hero{padding-top:24px}h1{font-size:30px}.card{padding:20px;grid-template-columns:42px minmax(0,1fr);gap:12px}.icon{width:42px;height:42px;font-size:19px;border-radius:11px}.download{grid-column:1/-1;text-align:center}.card>div:nth-child(2){min-width:0}.brand{font-size:22px}footer{flex-direction:column}.tabs a{padding:8px 15px}}
main{width:100%;min-width:0}.card{min-width:0}.back{flex-shrink:0}


/* download-theme-v1 */
:root{color-scheme:light}
html[data-theme="dark"]{color-scheme:dark}
.header-actions{display:flex;align-items:center;gap:16px}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;padding:8px 12px;border:1px solid #dce5ef;border-radius:12px;background:#fff;color:#334b68;font:600 13px/1.4 system-ui,sans-serif;cursor:pointer;white-space:nowrap}
.theme-toggle:hover{background:#eaf3fd}.theme-toggle:focus-visible{outline:3px solid #f2ae35;outline-offset:4px}
.theme-icon{font-size:18px;line-height:1}
html[data-theme="dark"] body{background:#101722;color:#e7eef8}
html[data-theme="dark"] .back,html[data-theme="dark"] .intro,html[data-theme="dark"] .meta,html[data-theme="dark"] .desc,html[data-theme="dark"] .help ol{color:#b5c3d7}
html[data-theme="dark"] .eyebrow{color:#79bbff}
html[data-theme="dark"] .card,html[data-theme="dark"] .tabs a,html[data-theme="dark"] .theme-toggle{background:#192332;border-color:#334258;color:#dbe6f7}
html[data-theme="dark"] .icon{background:#233b57;color:#8ac6ff}
html[data-theme="dark"] .tabs a[aria-current]{background:#247bd2;border-color:#247bd2;color:#fff}
html[data-theme="dark"] .download{background:#247bd2;color:#fff}
html[data-theme="dark"] .download:hover{background:#1d67b2}
html[data-theme="dark"] .help{background:#192c42;border-color:#304660}
html[data-theme="dark"] details,html[data-theme="dark"] footer{color:#a4b5cc}
html[data-theme="dark"] .theme-toggle:hover{background:#25364b}
@media(max-width:600px){.header-actions{gap:10px}.theme-toggle{padding:8px 10px}.theme-label{display:none}.back{font-size:12px}}