:root{
  --bg:#070b14;
  --surface:#0d1424;
  --surface-2:#121b30;
  --ink:#e9eefb;
  --ink-dim:#c6d0e2;
  --muted:#9aa8c2;
  --faint:#7e8ca6;
  --line:rgba(150,168,199,.15);
  --line-strong:rgba(150,168,199,.3);
  --accent:#4dc9ff;
  --accent-ink:#052330;
  --accent-soft:rgba(77,201,255,.1);
  --accent-line:rgba(77,201,255,.35);
  --violet:#a08dff;
  --violet-soft:rgba(160,141,255,.1);
  --violet-line:rgba(160,141,255,.35);
  --green:#3ddc97;
  --green-soft:rgba(61,220,151,.1);
  --green-line:rgba(61,220,151,.3);
  --amber:#fbbf24;
  --amber-soft:rgba(251,191,36,.1);
  --amber-line:rgba(251,191,36,.3);
  --red:#ff8b92;
  --red-soft:rgba(255,139,146,.09);
  --red-line:rgba(255,139,146,.28);
  --code:#0a1120;
  --logo-tile:#edf2fa;
  --font-body:"DM Sans",system-ui,sans-serif;
  --font-display:"Space Grotesk","DM Sans",system-ui,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,monospace;
  --radius:14px;
  --radius-sm:10px;
  --shadow:0 24px 60px rgba(2,6,16,.6);
  --shadow-sm:0 10px 28px rgba(2,6,16,.5);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scrollbar-color:#22304e var(--bg);scrollbar-width:thin}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:#22304e;border-radius:8px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:#2d3d63}
::selection{background:var(--accent);color:var(--accent-ink)}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.65 var(--font-body);-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,select{font:inherit}
code,pre,kbd{font-family:var(--font-mono)}
button,a{outline-offset:3px}
button:focus-visible,a:focus-visible,select:focus-visible{outline:2px solid var(--accent)}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- Loader (setup.html) ---------- */
.site-loader{position:fixed;inset:0;z-index:100;display:grid;place-items:center;background:var(--bg);opacity:1;visibility:visible;transition:opacity .25s ease,visibility .25s ease}
.is-ready .site-loader{opacity:0;visibility:hidden;pointer-events:none}
.loader-shell{width:min(760px,calc(100% - 36px));display:grid;grid-template-columns:180px 1fr;gap:24px}
.loader-brand,.loader-main{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);padding:22px}
.loader-brand{height:118px;display:grid;align-content:start;gap:9px}
.loader-brand span:first-child{width:32px;height:32px;border-radius:8px}
.loader-brand span:last-child{width:86px;height:10px}
.loader-main{min-height:220px}
.skeleton{display:block;background:linear-gradient(100deg,#121a2c 20%,#1b2742 38%,#121a2c 56%);background-size:300% 100%;animation:skeleton-shimmer 1.2s ease-in-out infinite;border-radius:6px}
.skeleton-title{width:62%;height:30px;margin-bottom:18px}
.skeleton-line{width:90%;height:11px;margin-bottom:10px}
.skeleton-line.short{width:66%}
.loader-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:28px}
.loader-cards .skeleton{height:62px}
@keyframes skeleton-shimmer{0%{background-position:100% 0}100%{background-position:-100% 0}}

/* ---------- Topbar ---------- */
.topbar{position:sticky;top:0;z-index:30;height:68px;background:rgba(7,11,20,.86);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.topbar-inner{height:100%;max-width:1440px;margin:auto;padding:0 28px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;min-height:44px;font-family:var(--font-display);font-weight:700;letter-spacing:-.02em;white-space:nowrap;color:var(--ink)}
.brand-mark{display:grid;place-items:center;width:32px;height:32px;background:var(--logo-tile);border:1px solid rgba(9,14,26,.1);border-radius:8px;overflow:hidden;padding:0}
.brand-mark img{display:block;width:100%;height:100%;object-fit:cover}
.topnav{display:flex;align-items:center;gap:20px;margin-left:16px;color:var(--muted);font-size:13px}
.topnav a{display:inline-flex;align-items:center;min-height:44px}
.topnav a:hover,.mobile-panel a:hover,.side-nav a:hover{color:var(--accent)}
.topnav a[aria-current=page]{color:var(--ink);font-weight:600}
.topbar-cta{margin-left:auto;border:1px solid var(--line-strong);border-radius:8px;padding:8px 13px;min-height:44px;display:flex;align-items:center;gap:7px;font-weight:600;font-size:13px;background:var(--surface);color:var(--ink-dim);cursor:pointer;transition:color .15s ease,border-color .15s ease}
.topbar-cta:hover{border-color:var(--accent);color:var(--accent)}
.topbar-cta kbd{font:10px var(--font-mono);border:1px solid var(--line-strong);border-radius:4px;padding:2px 5px;color:var(--faint)}
.topbar-cta svg,.source-note svg,.footer svg{width:14px;height:14px}
.mobile-menu,.mobile-panel{display:none}

/* ---------- Layout ---------- */
.page-shell{max-width:1440px;margin:auto;padding:0 28px}
.page-shell.has-rail{display:grid;grid-template-columns:230px minmax(0,1fr);gap:50px}
.content{min-width:0;padding-bottom:60px}
.sidebar{position:sticky;top:96px;align-self:start;height:calc(100vh - 120px);padding:42px 0 0 4px}
.sidebar-label,.section-kicker{font:700 10px var(--font-mono);color:#6cb4dc;text-transform:uppercase;letter-spacing:.14em}
.side-nav{display:grid;gap:2px;margin-top:18px}
.side-nav a{border-left:2px solid transparent;padding:7px 0 7px 14px;color:var(--muted);font-size:13px}
.side-nav a.active{color:var(--accent);border-left-color:var(--accent);font-weight:700}
.progress-box{margin-top:50px;padding-top:18px;border-top:1px solid var(--line)}
.progress-head{display:flex;justify-content:space-between;color:var(--muted);font-size:12px}
.progress-head strong{color:var(--accent);font-size:12px}
.progress-track{height:5px;background:rgba(150,168,199,.14);border-radius:99px;margin:10px 0 8px;overflow:hidden}
.progress-track span{display:block;height:100%;width:0;background:var(--accent);border-radius:inherit;transition:width .3s ease}
.progress-box small{display:block;color:var(--faint);font-size:11px}

/* ---------- Page head (both pages) ---------- */
.page-head{padding:38px 0 22px}
.page-head h1{font-family:var(--font-display);font-size:clamp(28px,3.2vw,40px);line-height:1.12;letter-spacing:-.035em;font-weight:700;margin:0 0 10px;color:var(--ink)}
.page-head h1 span{color:var(--accent)}
.page-lede{color:var(--ink-dim);font-size:15px;margin:0;max-width:720px}
.page-lede strong{color:var(--ink);font-family:var(--font-display)}

/* ---------- Notices ---------- */
.notice{display:flex;gap:11px;align-items:flex-start;border:1px solid rgba(77,201,255,.25);background:var(--accent-soft);color:#a8cdf0;border-radius:10px;padding:13px 15px;font-size:12px;margin:0 0 20px}
.notice svg{flex:0 0 auto;width:17px;height:17px;color:var(--accent);margin-top:2px}
.notice-warn{border-color:var(--amber-line);background:var(--amber-soft);color:#e3c37c}
.notice-warn svg{color:var(--amber)}
.doc-section .notice{margin:22px 0 0}

/* ---------- Buttons ---------- */
.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:10px;padding:12px 16px;min-height:44px;font:700 13px var(--font-body);cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease,color .15s ease,filter .15s ease}
.button:active{transform:translateY(1px)}
.button svg{width:16px;height:16px}
.button-primary{background:var(--accent);color:var(--accent-ink);border:1px solid transparent;box-shadow:0 12px 30px rgba(45,160,230,.35),inset 0 1px 0 rgba(255,255,255,.4)}
.button-primary:hover{filter:brightness(1.07);transform:translateY(-1px);box-shadow:0 16px 38px rgba(45,160,230,.45),inset 0 1px 0 rgba(255,255,255,.4)}
.button-quiet{border:1px solid var(--line-strong);background:transparent;color:var(--ink-dim)}
.button-quiet:hover{border-color:var(--accent);color:var(--accent)}
.cta-row{margin:22px 0 0}

/* ================= LIST PAGE ================= */
.list-note{font-size:12px;color:var(--faint);margin:26px 0 0;max-width:800px}
.list-note em{color:var(--muted);font-style:normal;font-family:var(--font-mono);font-size:11px}

/* ================= SETUP GUIDES ================= */
.doc-section{padding:64px 0;border-top:1px solid var(--line);scroll-margin-top:88px}
.doc-section:first-of-type{border-top:0}
.doc-head{padding-top:34px}
.doc-head h1{font-family:var(--font-display);font-size:clamp(28px,3.4vw,42px);line-height:1.12;letter-spacing:-.035em;font-weight:700;margin:11px 0 12px;color:var(--ink)}
.doc-section h2{font-family:var(--font-display);font-size:34px;line-height:1.18;letter-spacing:-.03em;margin:11px 0 12px;color:var(--ink)}
.section-intro{color:var(--muted);max-width:700px;margin:0 0 32px;font-size:16px}
.flow-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.flow-diagram{display:grid;justify-items:center;gap:7px;padding:22px 0}
.flow-node{width:min(100%,360px);display:flex;align-items:center;gap:15px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);padding:15px 18px;box-shadow:var(--shadow-sm)}
.flow-node svg{width:21px;height:21px;color:var(--accent)}
.flow-node small{color:var(--faint);font-size:11px}
.accent-node{border-color:var(--accent-line);background:var(--accent-soft)}
.flow-arrow{height:27px;display:grid;place-items:center;color:#5d7089}
.flow-arrow span{position:absolute;height:24px;border-left:1px dashed rgba(150,168,199,.4)}
.flow-arrow svg{position:relative;background:var(--bg);width:14px;height:14px}
.definition-list{border-left:1px solid var(--line-strong)}
.definition-list div{display:grid;gap:3px;padding:14px 0 14px 22px;border-bottom:1px solid var(--line)}
.definition-list div:last-child{border-bottom:0}
.definition-list strong{font-size:13px;color:var(--ink-dim)}
.definition-list span{font-size:13px;color:var(--muted)}
.endpoint-row{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:28px}
.endpoint-row div{padding:15px 17px;border-right:1px solid var(--line);display:grid;gap:4px}
.endpoint-row div:last-child{border-right:0}
.endpoint-row code{color:var(--accent);font-size:12px}
.endpoint-row span{color:var(--muted);font-size:11px}
.source-note{font-size:12px;color:var(--faint);margin:24px 0 0}
.source-note a{color:var(--accent);font-weight:600;display:inline-flex;align-items:center;gap:4px;min-height:24px}
.two-column{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.two-column > *{min-width:0}
.subheading{font-family:var(--font-display);font-size:14px;margin:0 0 10px;color:var(--ink-dim)}
.code-block{background:var(--code);border:1px solid rgba(150,168,199,.14);border-radius:12px;overflow:hidden;box-shadow:var(--shadow-sm);min-width:0;max-width:100%}
.code-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 8px 0 13px;min-height:45px;border-bottom:1px solid rgba(150,168,199,.12);color:#7e8ca6;font:11px var(--font-mono)}
.copy-button{border:0;background:transparent;color:#93a2ba;display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:0 8px;border-radius:8px;cursor:pointer;font-size:11px;transition:color .15s ease,background .15s ease}
.copy-button:hover{color:#fff;background:rgba(150,168,199,.1)}
.copy-button svg{width:14px;height:14px}
.code-block pre{margin:0;padding:17px 18px;overflow-x:auto;color:#d9e6f7;font:12px/1.75 var(--font-mono)}
.small-note{font-size:12px;color:var(--faint)}
.tab-shell{margin-top:28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);overflow:hidden;box-shadow:var(--shadow-sm)}
.tab-list{display:flex;gap:4px;flex-wrap:wrap;padding:10px;border-bottom:1px solid var(--line);background:rgba(150,168,199,.04)}
.tab{display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;background:transparent;padding:8px 12px;min-height:44px;color:var(--muted);cursor:pointer;font:600 12px var(--font-body);border-radius:8px;transition:color .15s ease,background .15s ease,border-color .15s ease}
.tab:hover{background:rgba(150,168,199,.08);color:var(--ink-dim)}
.tab.active{background:var(--accent-soft);border-color:var(--accent-line);color:#aee2ff}
.tab:disabled{opacity:.5;cursor:not-allowed}
.tab:disabled:hover{background:transparent;color:var(--muted);border-color:transparent}
.tab-panel{display:none;padding:18px}
.tab-panel.active{display:block}
.tab-panel p{margin:0 0 13px;color:var(--muted);font-size:13px}
.tab-panel .notice{margin:0}
.tip{display:flex;gap:12px;background:var(--green-soft);border:1px solid var(--green-line);border-radius:10px;padding:14px 16px;margin-top:25px}
.tip>svg{color:var(--green);width:18px;flex:0 0 auto}
.tip strong{font-size:13px;color:#b7e6cf}
.tip p{font-size:12px;color:#9fd8bd;margin:3px 0 0}
.tip code{color:var(--green)}
.codex-flow{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:18px 20px;border:1px solid var(--line);background:var(--surface);border-radius:10px;color:var(--ink-dim);font-weight:600;font-size:13px;margin-bottom:28px}
.codex-flow svg{color:var(--accent);width:15px}
.check-list{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:25px}
.check-list div{display:flex;gap:8px;align-items:flex-start;color:var(--muted);font-size:12px}
.check-list svg{width:16px;height:16px;color:var(--green);flex:0 0 auto}
.switch-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:24px;align-items:center}
.switch-diagram{border:1px solid var(--line);border-radius:10px;background:var(--surface);padding:25px 22px;box-shadow:var(--shadow-sm)}
.switch-root{display:flex;align-items:center;justify-content:center;gap:8px;color:var(--accent);font-size:16px}
.switch-root svg{width:19px}
.switch-branches{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:30px}
.switch-branches span{border-top:1px solid var(--line-strong);padding-top:12px;text-align:center;color:var(--muted);font-size:11px}
.switch-fields{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.switch-fields div{border:1px solid var(--line);border-radius:9px;background:var(--surface);padding:13px 14px}
.switch-fields span{display:block;color:var(--faint);font-size:10px;text-transform:uppercase;letter-spacing:.09em}
.switch-fields b{font-size:12px;color:var(--ink-dim)}
.security-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.security-panel{border-radius:10px;padding:18px 19px;border:1px solid}
.security-panel.bad{background:var(--red-soft);border-color:var(--red-line)}
.security-panel.good{background:var(--green-soft);border-color:var(--green-line)}
.panel-label{display:flex;align-items:center;gap:7px;font-size:12px;font-weight:700;margin-bottom:14px}
.bad .panel-label{color:var(--red)}
.good .panel-label{color:var(--green)}
.panel-label svg{width:16px}
.security-panel pre{margin:0 0 13px;overflow:auto}
.security-panel code{font-size:12px;color:#ff9ba1}
.good ul{padding-left:17px;margin:0 0 12px;color:#9fd8bd;font-size:13px}
.security-panel p{font-size:12px;color:var(--muted);margin:0}
.troubleshoot-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.trouble-card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:17px;min-height:154px}
.error-code{display:inline-block;color:var(--accent);font:11px var(--font-mono);background:var(--accent-soft);border:1px solid var(--accent-line);padding:4px 7px;border-radius:5px}
.trouble-card h3{font-family:var(--font-display);font-size:15px;margin:12px 0 5px;color:var(--ink)}
.trouble-card p{font-size:12px;color:var(--muted);margin:0}
.trouble-card code{color:var(--accent);font-size:11px}
.skill-commands{display:flex;gap:9px;flex-wrap:wrap}
.skill-commands code{border:1px solid var(--accent-line);background:var(--accent-soft);color:var(--accent);padding:10px 13px;border-radius:8px;font-size:12px}

/* ---------- Footer ---------- */
.footer{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;padding:30px 0;color:var(--faint);font-size:12px}
.footer div{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.footer strong{color:var(--ink-dim)}
.footer a{display:inline-flex;gap:5px;align-items:center;color:var(--accent);font-weight:700}

/* ---------- Badges ---------- */
.off-badge{display:inline-block;background:rgba(150,168,199,.08);color:#93a0b6;border:1px dashed rgba(150,168,199,.4);font:800 9px/1 var(--font-mono);letter-spacing:.08em;text-transform:uppercase;padding:3px 7px;border-radius:5px;line-height:1;vertical-align:middle}
/* reachable-but-flagged guides (restricted quota / login issue) */
.warn-badge{display:inline-block;background:var(--amber-soft);color:var(--amber);border:1px solid var(--amber-line);font:800 9px/1 var(--font-mono);letter-spacing:.08em;text-transform:uppercase;padding:3px 7px;border-radius:5px;line-height:1;vertical-align:middle}
.newapi-chip{display:inline-flex;align-items:center;gap:5px;font:800 9px/1 var(--font-mono);letter-spacing:.07em;text-transform:uppercase;color:#8fd4ff;background:rgba(77,201,255,.09);border:1px solid rgba(77,201,255,.3);border-radius:999px;padding:3px 8px;line-height:1;vertical-align:middle}
.newapi-chip::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--accent);box-shadow:0 0 6px rgba(77,201,255,.85)}

/* ---------- Responsive ---------- */
@media(max-width:1050px){
  .topnav{gap:13px}
  .page-shell.has-rail{grid-template-columns:190px minmax(0,1fr);gap:32px}
}
@media(max-width:820px){
  .topbar-inner{padding:0 18px}
  .topnav,.topbar-cta{display:none}
  .mobile-menu{display:grid;place-items:center;margin-left:auto;border:1px solid var(--line-strong);background:var(--surface);border-radius:10px;width:44px;height:44px;color:var(--ink);cursor:pointer}
  .mobile-menu svg{width:20px}
  .mobile-panel{display:none;position:fixed;z-index:29;top:68px;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--line-strong);padding:6px 18px 16px;box-shadow:0 18px 40px rgba(2,8,20,.7);max-height:calc(100vh - 68px);overflow-y:auto;overscroll-behavior:contain}
  .mobile-panel.open{display:grid}
  .mobile-panel a{padding:14px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:14px}
  .mobile-panel a[aria-current=page]{color:var(--accent);font-weight:600}
  .page-shell,.page-shell.has-rail{display:block;padding:0 18px}
  .sidebar{display:none}
  .doc-section{padding:52px 0}
  .troubleshoot-grid{grid-template-columns:repeat(2,1fr)}
  /* one scrolling tab strip instead of a 21-row wall of wrapped tabs */
  .tab-list{flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;scroll-padding-inline:10px}
  .tab-list::-webkit-scrollbar{height:6px}
  .tab-list::-webkit-scrollbar-track{background:transparent}
  .tab-list::-webkit-scrollbar-thumb{background:#2d3d63;border:0;border-radius:6px}
  .tab{flex:0 0 auto;white-space:nowrap}
  .flow-grid,.switch-layout{grid-template-columns:1fr}
  .definition-list{border-left:0;border-top:1px solid var(--line)}
  .definition-list div{padding-left:0}
  .content{padding-bottom:45px}
  .loader-shell{grid-template-columns:140px 1fr}
}
@media(max-width:700px){
  .loader-shell{grid-template-columns:1fr}
  .loader-brand{height:76px}
  .loader-main{min-height:180px}
  .loader-cards{grid-template-columns:1fr}
  .loader-cards .skeleton{height:40px}
}
@media(max-width:580px){
  body{font-size:14px}
  .page-head h1{font-size:29px}
  .doc-section h2{font-size:29px}
  .section-intro{font-size:14px}
  .two-column,.security-grid,.troubleshoot-grid{grid-template-columns:1fr}
  .endpoint-row{grid-template-columns:1fr}
  .endpoint-row div{border-right:0;border-bottom:1px solid var(--line)}
  .endpoint-row div:last-child{border-bottom:0}
  .check-list{grid-template-columns:1fr}
  .codex-flow{gap:8px}
  .switch-fields{grid-template-columns:1fr}
  .footer{display:grid;gap:12px}
}
@media(max-width:380px){
  .topbar-inner{padding:0 12px}
  .page-shell,.page-shell.has-rail{padding:0 12px}
  .doc-section{padding:44px 0}
  .code-block pre{font-size:11px;padding:14px}
  .footer{gap:12px}
}
@media(prefers-reduced-motion:reduce){
  *,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}
  .skeleton{animation:none}
  .site-loader{transition:none}
}