:root{
--bg:#060708;--panel:#16181d;--line:rgba(255,255,255,0.08);--line-strong:rgba(255,255,255,0.14);
--card-grad:linear-gradient(180deg,rgba(255,255,255,0.05),rgba(255,255,255,0.015));--gold:#f59e0b;--gold-bright:#fbbf24;--green:#4ade80;
--text:#f4f4f5;--muted-light:#a1a1aa;--muted:#6b7280;--prose:#d4d4d8;--nav-bg:rgba(6,7,8,0.86);--chip:rgba(255,255,255,0.07);}
html[data-theme="light"]{
--bg:#fbfbfc;--panel:#f1f2f4;--line:rgba(0,0,0,0.09);--line-strong:rgba(0,0,0,0.15);
--card-grad:linear-gradient(180deg,rgba(0,0,0,0.035),rgba(0,0,0,0.012));--gold:#b45309;--gold-bright:#92400e;--green:#16a34a;
--text:#18181b;--muted-light:#52525b;--muted:#71717a;--prose:#3f3f46;--nav-bg:rgba(255,255,255,0.9);--chip:rgba(0,0,0,0.06);}
*{box-sizing:border-box;}
body{margin:0;background:var(--bg);color:var(--text);font-family:'Inter',-apple-system,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.65;transition:background .2s ease,color .2s ease;}
a{color:var(--gold);text-decoration:none;}a:hover{color:var(--gold-bright);}
header.nav{position:sticky;top:0;z-index:20;display:flex;justify-content:center;padding:14px 24px;background:var(--nav-bg);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.nav-inner{width:100%;max-width:1120px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:19px;letter-spacing:-.02em;font-family:'Space Grotesk',sans-serif;color:var(--text);}
.logo span b{color:var(--gold);font-weight:800;}
.nav-right{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin-left:auto;}
.nav-link{font-size:14px;font-weight:600;color:var(--muted-light);}.nav-link:hover{color:var(--text);}
.nav-cta{font-size:14px;font-weight:700;color:var(--gold);}
html.is-android .nav-cta{display:none;}
.theme-toggle{background:transparent;border:1px solid var(--line-strong);border-radius:8px;color:var(--muted-light);width:34px;height:34px;display:grid;place-items:center;cursor:pointer;padding:0;transition:color .15s,border-color .15s;}
.theme-toggle:hover{color:var(--text);border-color:var(--gold);}
.theme-toggle svg{width:16px;height:16px;}
.theme-toggle .moon{display:none;}
html[data-theme="light"] .theme-toggle .sun{display:none;}
html[data-theme="light"] .theme-toggle .moon{display:block;}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:16px;}
.nav-burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:38px;height:34px;padding:7px 8px;background:transparent;border:1px solid var(--line-strong);border-radius:8px;cursor:pointer;}
.nav-burger span{display:block;height:2px;width:100%;background:var(--text);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
@media(max-width:640px){
.nav-burger{display:flex;}
.nav-right{display:none;width:100%;order:5;margin-left:0;flex-direction:column;align-items:stretch;gap:0;padding:4px 0 8px;}
.nav-right.open{display:flex;}
.nav-right .nav-link,.nav-right .nav-cta{padding:12px 2px;font-size:16px;border-bottom:1px solid var(--line);}
}
main{max-width:820px;margin:0 auto;padding:34px 22px 70px;}
.crumb{display:inline-block;font-size:13px;color:var(--muted-light);margin-bottom:18px;}
h1{font-family:'Space Grotesk',sans-serif;font-size:clamp(28px,6vw,40px);line-height:1.1;letter-spacing:-.03em;margin:0 0 8px;}
.lede{font-size:17px;color:var(--muted-light);margin:0 0 28px;}
h2{font-family:'Space Grotesk',sans-serif;font-size:22px;letter-spacing:-.02em;margin:34px 0 10px;}
h3{font-size:17px;margin:22px 0 6px;}
p,li{font-size:15.5px;color:var(--prose);}
ul,ol{padding-left:22px;}li{margin:5px 0;}
strong{color:var(--text);}
code{background:var(--chip);border:1px solid var(--line);border-radius:5px;padding:1px 6px;font-size:13px;font-family:ui-monospace,monospace;color:var(--text);}
.note{background:var(--card-grad);border:1px solid var(--line-strong);border-radius:12px;padding:14px 16px;margin:20px 0;font-size:14.5px;color:var(--muted-light);}
.updated{font-size:13px;color:var(--muted);margin:-2px 0 26px;}
.cat{margin:0 0 30px;}
.cat h2{margin:26px 0 6px;border-bottom:1px solid var(--line);padding-bottom:8px;}
.cat a{display:block;padding:9px 0;border-bottom:1px solid var(--line);font-size:16px;font-weight:600;color:var(--text);}
.cat a:hover{color:var(--gold);}.cat a span{display:block;font-size:13px;font-weight:400;color:var(--muted);margin-top:2px;}
.faq h3{font-size:16.5px;color:var(--text);margin:24px 0 4px;}
.doc-foot{margin-top:42px;padding-top:18px;border-top:1px solid var(--line);font-size:13px;color:var(--muted);}
footer.site{border-top:1px solid var(--line);padding:26px 22px;text-align:center;font-size:12.5px;color:var(--muted);line-height:1.6;}
footer.site a{color:var(--muted-light);}