:root{
  --bg:#09090b; --surface:#131319; --elevated:#1b1b24;
  --border:rgba(255,255,255,.08); --border2:rgba(255,255,255,.14);
  --text:#f6f6f5; --muted:#a2a2ae; --faint:#66666f;
  --amber:#f59e0b; --gold:#facc15; --wa:#25d366;
  --grad:linear-gradient(135deg,var(--amber),var(--gold));
  --btn-fg:#000; --nav-bg:rgba(9,9,11,.72); --chip-bg:rgba(255,255,255,.04); --lead:#d9d9de; --ghost-hover:rgba(255,255,255,.05);
  --display:"Sora",system-ui,sans-serif; --body:"Manrope",system-ui,sans-serif; --mono:"Space Mono",ui-monospace,monospace;
}
:root[data-theme="light"]{
  --bg:#faf9f7; --surface:#ffffff; --elevated:#f3f3f5;
  --border:rgba(0,0,0,.10); --border2:rgba(0,0,0,.15);
  --text:#18181b; --muted:#52525b; --faint:#9a9aa2;
  --amber:#b45309; --gold:#d97706;
  --btn-fg:#fff; --nav-bg:rgba(255,255,255,.82); --chip-bg:rgba(0,0,0,.045); --lead:#3f3f46; --ghost-hover:rgba(0,0,0,.05);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--body);font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--amber);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.wrap{max-width:1120px;margin:0 auto;padding:0 24px}

/* nav */
nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(12px);background:var(--nav-bg);border-bottom:1px solid var(--border)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--display);font-weight:800;font-size:20px;color:var(--text);text-decoration:none}
.brand img{width:34px;height:34px;border-radius:9px}
.brand:hover{text-decoration:none}
.nav-links{display:flex;align-items:center;gap:26px}
.nav-links a:not(.btn){color:var(--muted);font-weight:600;font-size:14.5px;text-decoration:none}
.nav-links a:not(.btn):hover{color:var(--text);text-decoration:none}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--display);font-weight:800;font-size:15px;padding:11px 20px;border-radius:12px;
  color:var(--btn-fg);background:var(--grad);text-decoration:none;box-shadow:0 8px 24px -10px rgba(245,158,11,.9);transition:filter .15s,transform .15s}
.btn:hover{filter:brightness(1.05);transform:translateY(-1px);text-decoration:none}
.btn.lg{font-size:16px;padding:14px 26px}
@media(max-width:640px){.nav-links a:not(.btn){display:none}}

/* document / article */
main{padding:52px 0 30px}
.doc{max-width:760px;margin:0 auto}
.eyebrow{font-family:var(--mono);font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--amber);margin-bottom:12px}
.doc h1{font-family:var(--display);font-weight:800;letter-spacing:-.03em;font-size:clamp(30px,5vw,46px);line-height:1.1;margin:0 0 14px;text-wrap:balance}
.doc .updated{font-family:var(--mono);font-size:12.5px;color:var(--faint);margin-bottom:30px}
.doc h2{font-family:var(--display);font-weight:700;font-size:24px;margin:38px 0 12px;letter-spacing:-.01em}
.doc h3{font-family:var(--display);font-weight:700;font-size:19px;margin:26px 0 8px}
.doc p,.doc li{color:var(--muted);font-size:16.5px;line-height:1.78}
.doc ul,.doc ol{padding-left:22px;margin:10px 0}
.doc li{margin:6px 0}
.doc strong,.doc b{color:var(--text)}
.doc .lead{font-size:19px;color:var(--lead);line-height:1.7}
.doc blockquote{border-left:3px solid var(--amber);margin:22px 0;padding:2px 0 2px 18px;color:var(--muted);font-style:italic}
.doc a:not(.btn){color:var(--amber)}
.callout{background:rgba(245,158,11,.08);border:1px solid rgba(245,158,11,.25);border-radius:14px;padding:16px 18px;margin:24px 0;color:var(--muted);font-size:15.5px;line-height:1.6}
.callout b{color:var(--text)}
.cta-box{background:var(--surface);border:1px solid var(--border2);border-radius:18px;padding:28px;margin:34px 0;text-align:center}
.cta-box h3{font-family:var(--display);font-weight:800;font-size:22px;margin:0 0 8px;color:var(--text)}
.cta-box p{margin:0 0 18px}
.steps-list{counter-reset:s;list-style:none;padding:0}
.steps-list li{position:relative;padding:0 0 4px 46px;margin:0 0 18px;min-height:30px}
.steps-list li::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;
  background:var(--grad);color:var(--btn-fg);font-family:var(--display);font-weight:800;font-size:15px;display:flex;align-items:center;justify-content:center}

/* blog listing */
.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px;margin-top:36px}
.post-card{display:block;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:24px;text-decoration:none;transition:border-color .2s,transform .2s}
.post-card:hover{border-color:rgba(245,158,11,.4);transform:translateY(-3px);text-decoration:none}
.post-card .tag{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--amber)}
.post-card h2{font-family:var(--display);font-weight:700;font-size:19px;color:var(--text);margin:10px 0 8px;line-height:1.3}
.post-card p{color:var(--muted);font-size:14.5px;margin:0;line-height:1.55}

/* footer */
footer{padding:52px 0 40px;border-top:1px solid var(--border);color:var(--muted);margin-top:44px}
.foot-inner{display:grid;grid-template-columns:1.3fr 2fr;gap:40px;padding-bottom:34px;border-bottom:1px solid var(--border)}
.foot-brand p{color:var(--muted);font-size:14.5px;max-width:290px;margin:14px 0 0;line-height:1.55}
.foot-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.foot-cols h4{font-family:var(--display);font-weight:700;font-size:14px;color:var(--text);margin:0 0 12px}
.foot-cols a{display:block;color:var(--muted);font-size:14px;padding:5px 0;text-decoration:none}
.foot-cols a:hover{color:var(--amber);text-decoration:none}
.foot-bottom{padding-top:22px;text-align:center;font-size:13.5px}
.foot-bottom .fine{font-family:var(--mono);font-size:11.5px;color:var(--faint);margin-top:8px}
@media(max-width:760px){.foot-inner{grid-template-columns:1fr;gap:28px}.foot-cols{grid-template-columns:1fr 1fr}}

/* mini-FAQ accordion for guide pages */
.mini-faq{margin:14px 0 8px;border-top:1px solid var(--border2)}
.mini-faq details{border-bottom:1px solid var(--border2)}
.mini-faq summary{cursor:pointer;list-style:none;padding:15px 2px;font-family:var(--display);font-weight:700;font-size:16.5px;color:var(--text);display:flex;justify-content:space-between;align-items:center;gap:14px}
.mini-faq summary::-webkit-details-marker{display:none}
.mini-faq summary::after{content:"+";color:var(--amber);font-size:22px;font-weight:400;line-height:1}
.mini-faq details[open] summary::after{content:"–"}
.mini-faq details p{margin:0 2px 16px;color:var(--muted);font-size:15.5px;line-height:1.7}

/* theme toggle */
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;border:1px solid var(--border2);background:var(--chip-bg);color:var(--text);font-size:15px;line-height:1;padding:0;cursor:pointer;transition:border-color .15s,background .15s;flex:none}
.theme-toggle:hover{border-color:var(--amber)}