/* Guide pages (/guide/*): same tokens and aurora as the homepage, a 760px reading column. */
:root{
  --bg:#05070B; --ink:#EDF3F7; --ink2:rgba(222,234,242,.74); --ink3:rgba(222,234,242,.48);
  --line:rgba(255,255,255,.09); --glass-a:rgba(255,255,255,.10); --glass-b:rgba(255,255,255,.045); --rim:rgba(255,255,255,.13);
  --accent:#7CF2D8; --accent2:#36C7AE; --cool:#8FB3FF; --on-accent:#03221C; --warm:#FFB86B; --hot:#FF8079;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,"Roboto Mono",monospace;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16.5px/1.85 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
h1,h2,h3,p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px}
.aurora{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden}
.aurora i{position:absolute;border-radius:50%;filter:blur(90px);opacity:.42;animation:drift 30s ease-in-out infinite alternate}
.aurora i:nth-child(1){width:60vw;height:60vw;left:-20vw;top:-25vw;background:#0D9C8A}
.aurora i:nth-child(2){width:50vw;height:50vw;right:-22vw;top:30vh;background:#2449B8;animation-duration:36s}
.aurora::after{content:"";position:absolute;inset:0;background:radial-gradient(120% 80% at 50% 0%,transparent 35%,var(--bg) 85%)}
@keyframes drift{to{transform:translate(5vw,4vh) scale(1.08)}}
.glass{background:linear-gradient(155deg,var(--glass-a),var(--glass-b));-webkit-backdrop-filter:blur(22px) saturate(160%);backdrop-filter:blur(22px) saturate(160%);
  border:1px solid var(--rim);border-radius:22px;box-shadow:inset 0 1px 0 rgba(255,255,255,.12),0 20px 50px -26px rgba(0,0,0,.75)}
.wrap{max-width:1080px;margin:0 auto;padding-inline:clamp(18px,4vw,32px)}

/* header */
.top{position:sticky;top:0;z-index:20;background:rgba(5,7,11,.7);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:24px;height:62px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:-.01em}
.brand svg{width:28px;height:28px}
.brand-cn{font-weight:600;font-size:14.5px;color:var(--ink2);padding-left:10px;border-left:1px solid var(--rim);line-height:1;letter-spacing:.06em}
.top nav{display:flex;gap:22px;margin-left:auto;font-size:14.5px;color:var(--ink2)}
.top nav a:hover,.top nav a[aria-current]{color:var(--ink)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:999px;font-weight:700;font-size:15px;white-space:nowrap;transition:transform .2s,box-shadow .2s}
.btn:active{transform:scale(.97)}
.btn-primary{background:linear-gradient(180deg,var(--accent),var(--accent2));color:var(--on-accent);box-shadow:inset 0 1px 0 rgba(255,255,255,.6),0 14px 34px -12px rgba(124,242,216,.55)}
.btn-ghost{border:1px solid var(--rim);background:rgba(255,255,255,.05);color:var(--ink)}
.top .btn{height:38px;padding:0 16px;font-size:14px}

/* article */
.doc{max-width:760px;margin:0 auto;padding:clamp(26px,5vw,56px) clamp(18px,4vw,32px) 40px}
.crumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:13.5px;color:var(--ink3);margin-bottom:22px}
.crumbs a:hover{color:var(--ink)}
.crumbs span[aria-hidden]{opacity:.6}
.kicker{display:inline-flex;align-items:center;gap:8px;font:650 12.5px/1 var(--sans);letter-spacing:.1em;color:var(--accent);padding:7px 12px;border-radius:99px;background:rgba(124,242,216,.1);border:1px solid rgba(124,242,216,.24)}
.doc h1{font-size:clamp(28px,4.6vw,42px);line-height:1.25;font-weight:750;letter-spacing:-.02em;margin:18px 0 14px;text-wrap:balance}
.meta{font-size:13.5px;color:var(--ink3)}
.lead{margin-top:20px;font-size:17.5px;color:var(--ink2)}
.doc h2{font-size:clamp(22px,3vw,27px);line-height:1.35;font-weight:720;letter-spacing:-.01em;margin:52px 0 14px;scroll-margin-top:84px}
.doc h3{font-size:18.5px;line-height:1.45;font-weight:680;margin:30px 0 8px}
.doc p{margin:12px 0;color:var(--ink2)}
.doc p b,.doc li b{color:var(--ink);font-weight:650}
.doc ul,.doc ol{margin:12px 0;padding-left:1.3em;color:var(--ink2)}
.doc li{margin:7px 0}
.doc li::marker{color:var(--accent)}
.doc a.inl{color:var(--accent);border-bottom:1px solid rgba(124,242,216,.35)}
.doc a.inl:hover{border-color:var(--accent)}
kbd,code{font:500 .9em var(--mono);padding:2px 7px;border-radius:7px;background:rgba(255,255,255,.07);border:1px solid var(--line);color:var(--ink)}

/* summary box */
.tldr{margin-top:28px;padding:22px 24px}
.tldr strong{display:block;font-size:13px;letter-spacing:.12em;color:var(--accent);margin-bottom:6px}
.tldr ul{margin:0}

/* numbered steps */
.steps{list-style:none;padding:0!important;margin:20px 0;counter-reset:st}
.steps>li{position:relative;padding:18px 20px 18px 66px;margin:12px 0;border-radius:20px;border:1px solid var(--rim);background:rgba(255,255,255,.035);counter-increment:st}
.steps>li::before{content:counter(st);position:absolute;left:18px;top:18px;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font:700 14px var(--mono);color:var(--on-accent);background:linear-gradient(180deg,var(--accent),var(--accent2))}
.steps>li>b:first-child{display:block;font-size:16.5px;margin-bottom:2px}
.steps>li p{margin:4px 0 0}

/* callouts */
.note{margin:20px 0;padding:16px 18px 16px 50px;border-radius:18px;position:relative;font-size:15.5px;color:var(--ink2);border:1px solid rgba(143,179,255,.28);background:rgba(143,179,255,.07)}
.note::before{content:"i";position:absolute;left:16px;top:16px;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font:700 13px var(--mono);color:#0B1430;background:var(--cool)}
.note.tip{border-color:rgba(124,242,216,.3);background:rgba(124,242,216,.07)}
.note.tip::before{content:"✓";background:var(--accent);color:var(--on-accent)}
.note.warn{border-color:rgba(255,184,107,.32);background:rgba(255,184,107,.07)}
.note.warn::before{content:"!";background:var(--warm);color:#2A1600}

/* tables */
.tbl{margin:20px 0;overflow-x:auto;border-radius:18px;border:1px solid var(--rim);background:rgba(255,255,255,.03)}
.tbl table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:540px}
.tbl th,.tbl td{padding:12px 14px;text-align:left;border-top:1px solid var(--line);vertical-align:top}
.tbl th{border-top:0;font-size:12.5px;letter-spacing:.06em;color:var(--ink3);font-weight:650;background:rgba(255,255,255,.03)}
.tbl td{color:var(--ink2)}
.tbl td:first-child{color:var(--ink);font-weight:650;white-space:nowrap}
.yes{color:var(--accent)!important;font-weight:650}

/* FAQ inside an article */
.qa{margin:18px 0}
.qa details{border-top:1px solid var(--line)}
.qa details:last-child{border-bottom:1px solid var(--line)}
.qa summary{list-style:none;cursor:pointer;padding:16px 34px 16px 0;font-weight:650;position:relative}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";position:absolute;right:4px;top:10px;font:400 24px/1.4 var(--sans);color:var(--accent);transition:transform .25s}
.qa details[open] summary::after{transform:rotate(45deg)}
.qa details p{margin:0 0 16px}

/* download CTA */
.cta{margin:48px 0 0;padding:28px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;align-items:center;border-color:rgba(124,242,216,.3);
  background:linear-gradient(120deg,rgba(124,242,216,.15),rgba(143,179,255,.08) 60%,rgba(255,255,255,.03))}
.cta b{display:block;font-size:20px;line-height:1.35}
.cta p{margin:6px 0 0!important;font-size:14.5px}
.cta .btns{display:flex;gap:10px;flex-wrap:wrap}

/* related */
.related{margin-top:48px}
.related h2{margin-top:0!important;font-size:20px!important}
.rel{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:14px}
.rel a{display:block;padding:16px 18px;border-radius:18px;border:1px solid var(--rim);background:rgba(255,255,255,.035);transition:border-color .25s,transform .25s}
.rel a:hover{border-color:rgba(124,242,216,.42);transform:translateY(-2px)}
.rel b{display:block;font-size:15px;line-height:1.45}
.rel small{display:block;color:var(--ink3);font-size:13px;margin-top:3px}

/* hub list */
.hub{display:grid;gap:14px;margin-top:30px}
.hub a{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:18px;align-items:center;padding:22px 24px;transition:border-color .25s,transform .25s}
.hub a:hover{border-color:rgba(124,242,216,.42);transform:translateY(-2px)}
.hub .gt{font:650 11px/1 var(--mono);letter-spacing:.08em;color:var(--accent);padding:9px 0;width:56px;text-align:center;border-radius:11px;background:rgba(124,242,216,.1);border:1px solid rgba(124,242,216,.22)}
.hub b{display:block;font-size:17px;line-height:1.45}
.hub small{display:block;color:var(--ink3);font-size:14px;margin-top:4px}
.hub i{font-style:normal;color:var(--ink3);font-size:18px}

footer{border-top:1px solid var(--line);margin-top:56px;padding:34px 0 48px;color:var(--ink3);font-size:13.5px}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px 34px;align-items:center;justify-content:space-between}
footer nav{display:flex;flex-wrap:wrap;gap:20px}
footer nav a:hover{color:var(--ink)}

@media (max-width:760px){
  body{font-size:15.5px;line-height:1.8}
  .top .wrap{height:56px;gap:14px}
  .top nav{display:none}
  .top .btn{margin-left:auto;height:34px;padding:0 14px;font-size:13px}
  .brand{font-size:16.5px}
  .brand-cn{font-size:13px;padding-left:8px}
  .lead{font-size:16px}
  .doc h2{margin-top:40px}
  .tbl{overflow:visible;border:0;background:none;border-radius:0}
  .tbl table{min-width:0}
  .tbl thead{display:none}
  .tbl tbody,.tbl tr,.tbl td{display:block}
  .tbl tr{margin:10px 0;padding:14px 16px;border-radius:16px;border:1px solid var(--rim);background:rgba(255,255,255,.035)}
  .tbl td{border:0;padding:3px 0}
  .tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px}
  .tbl td[data-label]:not(:first-child)::before{content:attr(data-label) "：";color:var(--ink3)}
  .steps>li{padding:16px 16px 16px 58px}
  .steps>li::before{left:14px;top:16px;width:30px;height:30px}
  .cta{grid-template-columns:minmax(0,1fr);padding:22px;text-align:center}
  .cta .btns{justify-content:center}
  .cta .btn{flex:1}
  .rel{grid-template-columns:minmax(0,1fr)}
  .hub a{padding:18px;gap:14px}
  .hub b{font-size:15.5px}
  footer .wrap{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;scroll-behavior:auto!important}}