/* Import order matters: later rules override earlier ones at equal specificity. */
:root{
  --ink:#1B1550;
  --indigo-700:#2B1F93;
  --indigo-600:#3B2BB3;
  --indigo-550:#4433C2;
  --cyan:#29C5F6;
  --violet:#7C5CFF;
  --green:#38D49A;
  --danger:#E5484D;
  --page:#F4F4F8;
  --card:#FFFFFF;
  --text:#26234E;
  --muted:#6B6890;
  --line:#E4E3F0;
  --wline:rgba(255,255,255,.14);
  --grad:linear-gradient(135deg,#29C5F6 0%,#7C5CFF 100%);
  --r-xl:34px;
  --r-lg:28px;
  --r-md:18px;
  --shadow:0 18px 50px -18px rgba(43,31,147,.22);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
a{color:inherit}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
body{
  font-family:'Inter',system-ui,sans-serif;
  color:var(--text);
  background:var(--page);
  line-height:1.6;
  font-size:16px;
}
h1,h2,h3{font-family:'Montserrat',sans-serif;line-height:1.15;letter-spacing:-.01em;color:var(--ink)}
section{padding:44px 0}
h2{font-size:clamp(26px,3.6vw,38px);font-weight:800;margin-bottom:16px}
h2 .c{color:transparent;background:var(--grad);-webkit-background-clip:text;background-clip:text}
.lead{font-size:17px;color:var(--muted);max-width:680px}
.center{text-align:center}
.center .lead{margin:0 auto}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:'Montserrat',sans-serif;font-weight:700;font-size:13px;
  letter-spacing:.12em;text-transform:uppercase;color:var(--indigo-600);
  margin-bottom:16px;
}
.eyebrow .aw{width:15px;height:15px;flex:none}
/* ---------- buttons & badges ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-family:'Montserrat',sans-serif;font-weight:700;font-size:15px;
  padding:13px 26px;border-radius:14px;text-decoration:none;
  transition:transform .18s ease,box-shadow .18s ease;cursor:pointer;border:0;
}
.btn:hover{transform:translateY(-2px)}
.btn:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}
.btn-grad{background:var(--grad);color:#fff;box-shadow:0 12px 30px -10px rgba(41,197,246,.5)}
.btn-line{background:#fff;color:var(--ink);border:1.5px solid var(--line)}
.btn-white{background:#fff;color:var(--indigo-600)}
@media (prefers-reduced-motion:reduce){
  .btn{transition:none}
}
/* .nav-open is toggled by js/site/nav.js */
header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:9px;text-decoration:none}
.logo b{font-family:'Montserrat',sans-serif;font-weight:800;font-size:22px;letter-spacing:-.02em;color:var(--ink)}
.logo b span{color:var(--cyan)}
.nav-links{display:flex;gap:26px;list-style:none}
.nav-links a{
  color:var(--text);text-decoration:none;font-size:14.5px;font-weight:500;
  transition:color .15s ease;
}
.nav-links a:hover{color:var(--indigo-600)}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-cta .btn{padding:10px 20px;font-size:14px}
.burger{display:none;background:none;border:0;width:42px;height:42px;cursor:pointer}
.burger span{display:block;height:2px;background:var(--ink);margin:6px 8px;border-radius:2px}
@media(max-width:860px){
  .nav-links{display:none}
  .burger{display:block}
  .nav-open .nav-links{
    display:flex;position:absolute;top:70px;left:0;right:0;
    flex-direction:column;background:#fff;padding:20px 24px;gap:16px;
    border-bottom:1px solid var(--line);
  }
}
.hero{padding:64px 0 56px;position:relative;overflow:hidden}
.hero .hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:48px;align-items:center;position:relative;z-index:2}
.hero h1{font-size:clamp(32px,4.6vw,52px);font-weight:800;margin:18px 0 18px}
.hero h1 .c{color:transparent;background:var(--grad);-webkit-background-clip:text;background-clip:text}
.hero .lead{margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-blur{
  position:absolute;width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,rgba(41,197,246,.18),rgba(124,92,255,.14) 45%,transparent 70%);
  top:-120px;right:-140px;z-index:1;pointer-events:none;
}
.hero-arrow{position:absolute;top:64px;left:-64px;z-index:1;pointer-events:none;opacity:.55}
@media(max-width:860px){
  .hero .hero-grid{grid-template-columns:1fr}
}
/* ---------- indigo mega block ---------- */
.mega{
  background:var(--indigo-600);color:#fff;border-radius:var(--r-lg);
  padding:56px 56px 48px;box-shadow:var(--shadow);
}
.mega h2{color:#fff}
.mega .lead{color:rgba(255,255,255,.72)}
.mega-grid{display:grid;grid-template-columns:1fr 1.9fr;gap:56px}
.feat-cols{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}
.feat{
  display:flex;gap:16px;align-items:flex-start;
  padding:20px 0;border-top:1px solid var(--wline);
}
.feat .fi{
  width:44px;height:44px;border-radius:12px;flex:none;
  background:rgba(255,255,255,.09);display:grid;place-items:center;
}
.feat .fi svg{width:22px;height:22px;stroke:var(--cyan)}
.feat b{font-family:'Montserrat',sans-serif;font-size:14.5px;display:block;margin-bottom:3px}
.feat p{font-size:13px;color:rgba(255,255,255,.62)}
@media(max-width:1020px){
  .mega{padding:44px 36px}
  .mega-grid{grid-template-columns:1fr;gap:24px}
}
@media(max-width:860px){
  .feat-cols{grid-template-columns:1fr}
}
@media(max-width:560px){
  .mega{padding:36px 24px}
}
/* ---------- ticks & chips ---------- */
.ticks{list-style:none;display:grid;gap:13px;margin-top:26px}
.ticks li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px}
.ticks .aw{width:14px;height:14px;flex:none;margin-top:5px}
.ticks.cols2{grid-template-columns:1fr 1fr;column-gap:36px}
.tag-grid{display:flex;flex-wrap:wrap;gap:11px;margin-top:28px}
.tag-chip{
  display:inline-flex;align-items:center;gap:9px;background:#fff;
  border:1px solid var(--line);border-radius:999px;padding:11px 18px 11px 14px;
  font-size:14.5px;color:var(--ink);font-weight:500;
}
.tag-chip svg{width:17px;height:17px;stroke:var(--indigo-600);flex:none}
@media(max-width:860px){
  .ticks.cols2{grid-template-columns:1fr}
}
/* ---------- CTA ---------- */
.cta-block{
  background:var(--indigo-600);border-radius:var(--r-lg);color:#fff;
  padding:72px 56px;text-align:center;position:relative;overflow:hidden;
  box-shadow:var(--shadow);
}
.cta-block h2{color:#fff;max-width:720px;margin:0 auto 16px;position:relative;z-index:2}
.cta-block .lead{color:rgba(255,255,255,.72);margin:0 auto 36px;position:relative;z-index:2}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;position:relative;z-index:2}
.cta-deco{position:absolute;pointer-events:none;z-index:1}
.cta-deco.a{top:34px;left:5%}
.cta-deco.b{bottom:30px;right:5%;transform:rotate(180deg)}
@media(max-width:560px){
  .cta-block{padding:52px 26px}
}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
  gap:20px;padding:24px 0;font-family:'Montserrat',sans-serif;font-weight:700;font-size:15.5px;color:var(--ink);
}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary svg{width:22px;height:22px;stroke:var(--indigo-600);flex:none;transition:transform .25s}
.faq-list details[open] summary svg{transform:rotate(45deg)}
.faq-list details p{padding:0 40px 20px 0;font-size:14.5px;color:var(--muted);line-height:1.55}
footer{background:var(--ink);color:rgba(255,255,255,.6);padding:52px 0 36px;font-size:14px;margin-top:44px;border-radius:var(--r-lg) var(--r-lg) 0 0}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-top h4{font-family:'Montserrat',sans-serif;font-size:17px;color:#fff;margin-bottom:10px;font-weight:700}
.foot-top p{font-size:13.5px;max-width:320px}
.foot-col b{display:block;font-family:'Montserrat',sans-serif;font-size:13px;color:#fff;margin-bottom:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.foot-col ul{list-style:none;display:grid;gap:9px}
.foot-col a{text-decoration:none;transition:color .15s}
.foot-col a:hover{color:var(--cyan)}
.foot-bottom{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-top:24px;font-size:12.5px;color:rgba(255,255,255,.4)}
.foot-bottom .logo b{font-size:18px;color:#fff}
@media(max-width:860px){
  .foot-top{grid-template-columns:1fr 1fr}
  .foot-top>div:first-child{grid-column:1/-1}
}
@media(max-width:560px){
  footer{padding:36px 0 26px;margin-top:32px}
  .foot-top{gap:26px;padding-bottom:22px}
  .foot-bottom{padding-top:18px;gap:12px}
}
/* .on is added on scroll by js/site/reveal.js */
.rv{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
.rv.on{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
}
/* breadcrumb */
.crumbs{padding-top:22px;padding-bottom:4px;font-size:13.5px;color:var(--muted)}
.crumbs a{text-decoration:none;color:var(--muted);transition:color .15s}
.crumbs a:hover{color:var(--indigo-600)}
.crumbs .sep{margin:0 8px;opacity:.5}
.crumbs .cur{color:var(--indigo-600);font-weight:600}

/* article intro */
.art-hero{padding:20px 0 8px;position:relative;overflow:hidden}
.art-hero .hero-blur{width:520px;height:520px;top:-160px;right:-160px}
.art-hero h1{font-size:clamp(30px,4vw,44px);margin:14px 0 18px;max-width:820px}
.art-hero .lead{font-size:17px;max-width:760px}
.art-meta{display:flex;gap:10px;align-items:center;margin-top:22px;flex-wrap:wrap}
.art-meta span{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--muted);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 14px;
}
.art-meta svg{width:14px;height:14px;stroke:var(--indigo-600);flex:none}

/* content + sticky toc layout */
.doc-grid{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:56px;align-items:start}
.toc{
  position:sticky;top:92px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px 20px;
}
.toc b{
  display:block;font-family:'Montserrat',sans-serif;font-weight:700;font-size:12px;
  letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:14px;
}
.toc ul{list-style:none;display:grid;gap:11px}
.toc a{
  font-size:14px;color:var(--text);text-decoration:none;line-height:1.35;
  display:block;transition:color .15s;
}
.toc a:hover{color:var(--indigo-600)}
.toc a.active{color:var(--indigo-600);font-weight:600}

/* numbered steps inside mega block */
.steps-list{list-style:none;margin-top:8px}
.step-item{
  display:grid;grid-template-columns:52px 1fr;gap:20px;
  padding:22px 0;border-top:1px solid var(--wline);
}
.steps-list .step-item:first-child{border-top:1px solid var(--wline)}
.step-item .n{
  width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.1);
  display:grid;place-items:center;font-family:'Montserrat',sans-serif;
  font-weight:800;font-size:14px;color:var(--cyan);
}
.step-item b{font-family:'Montserrat',sans-serif;font-size:16px;display:block;margin-bottom:5px;color:#fff}
.step-item p{font-size:14px;color:rgba(255,255,255,.65);line-height:1.5}

/* tl;dr callout inside dark mega */
.tldr{
  margin-top:32px;background:rgba(255,255,255,.08);border-radius:16px;
  padding:20px 24px;display:flex;gap:14px;align-items:flex-start;
}
.tldr svg{width:20px;height:20px;stroke:var(--cyan);flex:none;margin-top:2px}
.tldr b{font-family:'Montserrat',sans-serif;font-size:13.5px;color:var(--cyan);display:block;margin-bottom:4px;letter-spacing:.02em}
.tldr p{font-size:14.5px;color:rgba(255,255,255,.85);line-height:1.5}

/* light callout (white section) */
.callout{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px 30px;margin-top:28px;
}
.callout .tag{
  display:inline-flex;align-items:center;gap:7px;font-family:'Montserrat',sans-serif;
  font-weight:700;font-size:12px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--indigo-600);background:#EDEBFB;border-radius:8px;padding:6px 12px;margin-bottom:14px;
}
.callout h3{font-size:19px;margin-bottom:8px}
.callout p{font-size:15px;color:var(--muted);line-height:1.55}
/* checklist grid */
.check-wrap{margin-top:28px}
.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 32px}
.check-item{display:flex;gap:12px;align-items:flex-start;font-size:15px;line-height:1.45}
.check-item svg{width:19px;height:19px;stroke:#22B573;flex:none;margin-top:2px}
.tip-line{
  margin-top:22px;display:flex;gap:12px;align-items:flex-start;
  background:#EDEBFB;border-radius:14px;padding:16px 20px;
}
.tip-line svg{width:19px;height:19px;stroke:var(--indigo-600);flex:none;margin-top:1px}
.tip-line p{font-size:14.5px;color:var(--indigo-600);line-height:1.5}
.faq-list details p{padding:0 40px 24px 0}

.faq-qr{display:flex;align-items:center;gap:22px;margin-top:-6px;padding:0 40px 26px 0}
.faq-qr-code{flex:none;display:block;width:132px;height:132px;padding:9px;
  background:#fff;border:1px solid var(--line);border-radius:14px}
.faq-qr-code svg{display:block;width:100%;height:100%}
.faq-qr-note b{font-family:'Montserrat',sans-serif;font-size:14.5px;color:var(--ink);
  display:block;margin-bottom:5px}
/* two classes, to outrank .faq-list details p */
.faq-list .faq-qr-note p{padding:0 0 10px;font-size:14px}
.faq-qr-note a{font-family:'Montserrat',sans-serif;font-weight:700;font-size:14px;
  color:var(--indigo-600)}

/* responsive additions */
@media(max-width:1020px){
  .doc-grid{grid-template-columns:1fr}
  .toc{display:none}
}
@media(max-width:860px){
  .check-grid{grid-template-columns:1fr}
}
@media(max-width:560px){
  .faq-qr{flex-direction:column;align-items:flex-start;gap:16px;padding-right:0}
}