:root{
--bg:#f6f7fb;--surface:#fff;--text:#10131a;--muted:#667085;
--border:#dde2ea;--soft:#eef1f6;--shadow:0 18px 55px rgba(16,19,26,.08);
color-scheme:light dark;
}
html[data-theme="dark"]{
--bg:#0b101a;--surface:#101722;--text:#f4f6fa;--muted:#a7b0bf;
--border:#293344;--soft:#17202d;--shadow:0 18px 55px rgba(0,0,0,.24);
color-scheme:dark;
}
html[data-theme="light"]{color-scheme:light}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{color:inherit}
.spl-header{position:sticky;top:0;z-index:20;min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px max(20px,calc((100vw - 1160px)/2));border-bottom:1px solid var(--border);background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(16px)}
.spl-brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.spl-logo{width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:var(--text);color:var(--bg);font-weight:900}
.spl-actions{display:flex;gap:8px}
.spl-theme,.spl-entry{min-height:38px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:10px;padding:0 12px;background:var(--surface);color:var(--text);font:inherit;font-size:.86rem;font-weight:750;text-decoration:none;cursor:pointer}
.spl-entry{background:var(--text);color:var(--bg);border-color:var(--text)}
.spl-main{width:min(1160px,calc(100% - 32px));margin:auto;padding:42px 0 58px}
.spl-doc-switcher{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:22px}
.spl-doc-switcher a{min-height:38px;display:inline-flex;align-items:center;border:1px solid var(--border);border-radius:999px;padding:0 14px;background:var(--surface);color:var(--muted);text-decoration:none;font-size:.86rem;font-weight:750}
.spl-doc-switcher a.is-active{background:var(--text);color:var(--bg);border-color:var(--text)}
.spl-hero{max-width:830px;padding:30px 0 38px}
.spl-kicker{display:block;color:var(--muted);font-size:.78rem;font-weight:850;letter-spacing:.08em;text-transform:uppercase}
.spl-hero h1{margin:8px 0 0;font-size:clamp(2.2rem,6vw,4.6rem);line-height:1.02;letter-spacing:-.045em}
.spl-hero p{max-width:760px;margin:18px 0 0;color:var(--muted);font-size:1.08rem;line-height:1.7}
.spl-updated{display:inline-flex;margin-top:18px;border:1px solid var(--border);border-radius:999px;padding:7px 11px;background:var(--surface);color:var(--muted);font-size:.82rem;font-weight:700}
.spl-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:34px;align-items:start}
.spl-toc{position:sticky;top:96px;border:1px solid var(--border);border-radius:16px;padding:16px;background:var(--surface);box-shadow:var(--shadow)}
.spl-toc strong{display:block;margin-bottom:9px}
.spl-toc nav{display:grid;gap:3px}
.spl-toc a{border-radius:8px;padding:8px 9px;color:var(--muted);text-decoration:none;font-size:.86rem}
.spl-toc a:hover{background:var(--soft);color:var(--text)}
.spl-content{min-width:0;border:1px solid var(--border);border-radius:20px;background:var(--surface);box-shadow:var(--shadow);overflow:hidden}
.spl-content section{scroll-margin-top:96px;padding:28px 30px;border-top:1px solid var(--border)}
.spl-content section:first-child{border-top:0}
.spl-content h2{margin:0;font-size:1.3rem}
.spl-body{margin-top:12px;color:var(--muted);line-height:1.82;overflow-wrap:anywhere}
.spl-help{margin-top:34px;display:flex;align-items:center;justify-content:space-between;gap:22px;border:1px solid var(--border);border-radius:20px;padding:26px 28px;background:var(--surface)}
.spl-help h2{margin:6px 0 0}
.spl-help p{margin:8px 0 0;color:var(--muted)}
.spl-help>div:last-child{display:flex;gap:8px;flex-wrap:wrap}
.spl-help a{min-height:38px;display:inline-flex;align-items:center;border:1px solid var(--border);border-radius:10px;padding:0 12px;background:var(--soft);text-decoration:none;font-weight:750;font-size:.86rem}
.spl-footer{width:min(1160px,calc(100% - 32px));margin:auto;display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--border);padding:28px 0 34px;color:var(--muted);font-size:.84rem}
.spl-footer strong{color:var(--text)}
.spl-footer nav{display:flex;justify-content:flex-end;gap:14px;flex-wrap:wrap}
.spl-footer a{text-decoration:none}
@media(max-width:820px){
.spl-layout{grid-template-columns:1fr;gap:16px}.spl-toc{position:static}
.spl-toc nav{display:flex;gap:7px;overflow-x:auto}.spl-toc a{flex:0 0 auto;border:1px solid var(--border)}
.spl-help{align-items:flex-start;flex-direction:column}
}
@media(max-width:560px){
.spl-header{min-height:64px;padding:10px 14px}
.spl-theme{width:38px;padding:0;overflow:hidden;color:transparent;position:relative}
.spl-theme::after{content:"◐";position:absolute;inset:0;display:grid;place-items:center;color:var(--text)}
.spl-main,.spl-footer{width:min(100% - 24px,1160px)}
.spl-doc-switcher{display:grid;grid-template-columns:1fr 1fr}
.spl-doc-switcher a{justify-content:center;text-align:center;padding:0 8px;font-size:.8rem}
.spl-hero{padding:20px 0 26px}.spl-content section{padding:22px 18px}
.spl-help{padding:22px 18px}.spl-help>div:last-child,.spl-help a{width:100%}.spl-help a{justify-content:center}
.spl-footer{flex-direction:column}.spl-footer nav{justify-content:flex-start}
}