:root{
  color-scheme: light;
  --primary:#E44E38;
  --ink:#1E1E2C; --ink-2:#2A2A3B; --ink-3:#3B3B52; --ink-line:#393950;
  --paper:#FFFFFF; --canvas:#F4F5F8; --canvas-2:#ECEEF3;
  --line:#E2E4EB; --line-strong:#CBCED9;
  --text:#1E1E2C; --muted:#585A6D; --faint:#85879A; --on-ink:#F2F2F6; --on-ink-muted:#A9AABD;
  --brand:var(--primary); --brand-deep:#B5311E; --brand-tint:#FDEDE9; --brand-soft:#F6C5BB;
  --good:#1B7653; --good-tint:#E2F2EA; --warn:#9A620A; --warn-tint:#FBF0DB;
  --ballpoint:#24306A;

  --inst:#2549C9; --inst-deep:#1B3697; --inst-tint:#E9EEFB; --inst-line:#A8B6E9;
  --r-xs:6px; --r-sm:10px; --r:14px; --r-lg:20px;
  --gutter:clamp(16px,4vw,56px);
  --max:1240px;
  --nav-h:64px;
  --f-sans:"Schibsted Grotesk", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --f-mono:"Geist Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --f-hand:"Kalam", "Segoe Print", "Bradley Hand", cursive;
  /* The SmartPPT slide mock only. Local serif stack on purpose: it is what the
     real chapter decks are set in, and it keeps the slide reading as a document
     rather than as more page UI. No extra webfont for it. */
  --f-slide:"Times New Roman", Times, Georgia, serif;
  --shadow-1:0 1px 2px rgba(30,30,44,.06), 0 4px 14px rgba(30,30,44,.06);
  --shadow-2:0 2px 6px rgba(30,30,44,.06), 0 24px 60px -18px rgba(30,30,44,.22);
  --ease:cubic-bezier(.76,0,.24,1);
}
.wrap{max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter)}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.btn{--bg:var(--ink);--fg:#fff;position:relative;display:inline-flex;align-items:center;gap:10px;height:48px;padding:0 20px;border-radius:999px;border:1px solid transparent;background:var(--bg);color:var(--fg);font-weight:600;font-size:15px;text-decoration:none;white-space:nowrap;transition:transform .18s var(--ease),background-color .2s,box-shadow .2s,border-color .2s}
.btn *{color:inherit}
.btn:hover{top:-1px;box-shadow:0 6px 16px -8px rgba(30,30,44,.35)}
.btn:active{top:0;box-shadow:none}
.btn .arr{display:inline-block;transition:transform .25s var(--ease)}
.btn:hover .arr{transform:translateX(3px)}
.btn--brand{--bg:var(--brand);--fg:#fff}
.btn--brand:hover{--bg:#D8432E}
.btn--line{--bg:transparent;--fg:var(--ink);border-color:var(--line-strong)}
.btn--line:hover{border-color:var(--ink);box-shadow:none}
.btn--sm{height:38px;padding:0 14px;font-size:14px}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}
.btn-ico{flex:none;width:18px;height:18px;display:inline-flex}
.btn-ico svg{width:100%;height:100%}
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;color:var(--ink);transition:color .35s}
.nav::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;background:rgba(255,255,255,.55);backdrop-filter:blur(10px) saturate(150%);-webkit-backdrop-filter:blur(10px) saturate(150%);border-bottom:1px solid rgba(30,30,44,.06);box-shadow:inset 0 1px 0 rgba(255,255,255,.7);transition:background-color .35s,border-color .35s,box-shadow .35s}
.nav.is-scrolled::before{background:rgba(255,255,255,.62);border-bottom-color:rgba(30,30,44,.08);box-shadow:inset 0 1px 0 rgba(255,255,255,.7),0 10px 30px -14px rgba(30,30,44,.22)}
.nav.is-dark{color:#fff}
.nav.is-dark::before{background:rgba(30,30,44,.5);border-bottom-color:rgba(255,255,255,.08);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 10px 30px -14px rgba(0,0,0,.5)}
.nav .wrap{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:20px}

.logo{flex:none;display:flex;align-items:center;text-decoration:none;color:inherit;line-height:0}
.logo-img{display:block;width:auto;transition:opacity .35s}
.logo{position:relative}
.logo-light{height:30px}

.logo-dark{width:68px;height:30px;object-fit:cover;object-position:top center;position:absolute;left:0;top:50%;translate:0 -50%;opacity:0;pointer-events:none}
.nav.is-dark .logo-light{opacity:0}
.nav.is-dark .logo-dark{opacity:1}
.nav-links{flex:1;display:flex;align-items:center;justify-content:center;gap:2px}
.nav-links > a{white-space:nowrap;text-decoration:none;font-size:14.5px;font-weight:500;color:var(--muted);padding:8px 12px;border-radius:999px;transition:color .2s,background-color .2s}
.nav-links > a:hover,.nav-links > a[aria-current="true"]{color:var(--ink)}
.nav.is-dark .nav-links > a{color:var(--on-ink-muted)}
.nav.is-dark .nav-links > a:hover,.nav.is-dark .nav-links > a[aria-current="true"]{color:#fff}
.nav-end{flex:none;display:flex;align-items:center;gap:10px}
.nav.is-dark .nav-end .btn{--bg:#fff;--fg:var(--ink)}
.nav-end .btn{gap:8px}
.nav-end .btn .btn-ico{width:16px;height:16px}
.nav-toggle{display:none;width:40px;height:40px;border-radius:12px;border:1px solid rgba(30,30,44,.12);background:rgba(255,255,255,.5);color:inherit;padding:0;place-items:center;align-content:center;gap:5px}
.nav-toggle span{display:block;width:16px;height:1.6px;border-radius:2px;background:currentColor;transition:transform .45s cubic-bezier(.76,0,.24,1)}
.nav.is-dark .nav-toggle{border-color:rgba(255,255,255,.16);background:rgba(255,255,255,.06)}
.nav.is-open .nav-toggle span:first-child{transform:translateY(3.3px) rotate(45deg)}
.nav.is-open .nav-toggle span:last-child{transform:translateY(-3.3px) rotate(-45deg)}
.nav-menu-foot{display:none}
@media (min-width:1101px){
  .nav-links > a{position:relative}
  .nav-links > a::after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:1.5px;background:var(--brand);transform:scaleX(0);transform-origin:100% 50%;transition:transform .35s var(--ease)}
  .nav-links > a:hover::after,.nav-links > a[aria-current="true"]::after{transform:scaleX(1);transform-origin:0 50%}
}
@media (max-width:1100px){
  .nav-toggle{display:grid}

  .nav-links{position:fixed;inset:0;height:100vh;height:100dvh;z-index:-1;counter-reset:nl;display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    padding:calc(var(--nav-h) + env(safe-area-inset-top,0px) + clamp(20px,5vh,48px)) var(--gutter) calc(28px + env(safe-area-inset-bottom,0px));overflow-y:auto;overscroll-behavior:contain;
    background:var(--paper);
    clip-path:inset(0 0 100% 0);visibility:hidden;transition:clip-path .5s cubic-bezier(.7,0,.2,1),visibility 0s .5s}
  .nav.is-open .nav-links{clip-path:inset(0 0 0 0);visibility:visible;transition:clip-path .65s cubic-bezier(.76,0,.24,1),visibility 0s}
  .nav-links > a{counter-increment:nl;display:flex;align-items:baseline;gap:14px;padding:clamp(13px,2vh,17px) 2px;border-bottom:1px solid var(--line);border-radius:0;
    font-size:clamp(19px,4.6vw,24px);font-weight:650;letter-spacing:-.02em;line-height:1.2;color:var(--ink);
    opacity:0;transform:translateY(26px);transition:opacity .25s,transform .3s var(--ease),color .2s}
  .nav-links > a::before{content:counter(nl,decimal-leading-zero);font-family:var(--f-mono);font-size:11px;font-weight:500;letter-spacing:.06em;color:var(--faint);min-width:18px}
  .nav-links > a:hover,.nav-links > a[aria-current="true"]{color:var(--brand-deep);background:none}
  .nav-links > a[aria-current="true"]::before{color:var(--brand)}
  .nav.is-open .nav-links > a{opacity:1;transform:none;transition:opacity .45s calc(.18s + var(--i,0) * .06s),transform .6s var(--ease) calc(.18s + var(--i,0) * .06s),color .2s}
  .nav-menu-foot{display:flex;flex-direction:column;align-items:stretch;gap:10px;margin-top:auto;padding-top:32px;opacity:0;transform:translateY(16px);transition:opacity .2s,transform .3s var(--ease)}
  .nav.is-open .nav-menu-foot{opacity:1;transform:none;transition:opacity .45s .5s,transform .6s var(--ease) .5s}
  .nav-menu-foot .btn{width:100%;height:52px;padding:0 22px;font-size:16px;justify-content:center}
  .nav-menu-sub{--fg:var(--ink)}
  .nav.is-dark .nav-links{background:var(--ink)}
  .nav.is-dark .nav-links > a{color:#fff;border-bottom-color:rgba(255,255,255,.1)}
  .nav.is-dark .nav-links > a:hover,.nav.is-dark .nav-links > a[aria-current="true"]{color:var(--brand-soft)}
  .nav.is-dark .nav-menu-sub{--fg:#fff;border-color:rgba(255,255,255,.28)}
  .nav.is-open .nav-end .btn{opacity:0;pointer-events:none}
  .nav-end .btn{transition:opacity .25s,top .22s ease,background-color .2s,box-shadow .2s}
}
.footer-container{
  background:var(--canvas);
  color:var(--text);
  font-size:15px;
  line-height:1.6;
}

.footer-container .footer-content{
  max-width:var(--max);
  margin-inline:auto;
  padding:clamp(48px,5.5vw,72px) var(--gutter) clamp(40px,5vw,60px);
}
.footer-container .row > *{
  max-width:none;
  flex:none;
  float:none;
}
.footer-container .row{
  display:grid;
  grid-template-columns:1.55fr 1.1fr .72fr .78fr;
  gap:clamp(32px,4vw,64px);
  align-items:start;
}

.footer-container .footer-border{border-right:0}

.footer-container .footer-logo{
  content:url("../images/logo/quill-plus-1.png");
  height:58px;
  width:auto;
  display:block;
}
.footer-container .footer-subtitle{
  margin:22px 0 0;
  max-width:42ch;
  font-size:15px;
  line-height:1.6;
  color:var(--muted);
}
.footer-container .social-icons{
  display:flex;
  gap:10px;
  margin-top:26px;
}
.footer-container .social-icons a{
  display:grid;
  place-items:center;
  width:42px;
  height:42px;
  margin:0;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--paper);
  transition:border-color .2s,box-shadow .2s,top .2s;
  position:relative;
  top:0;
}
.footer-container .social-icons a:hover{
  border-color:var(--line-strong);
  box-shadow:var(--shadow-1);
  top:-1px;
}
.footer-container .social-icons svg{width:19px;height:19px;display:block}
.footer-container .social-icons svg path{fill:var(--ink)}

.footer-container .font-heading-2{
  margin:0 0 18px;
  font-family:var(--f-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--faint);
  line-height:1.3;
}

.footer-container p{margin:0}
.footer-container .footer-text{color:var(--muted)}
.footer-container .col-md-4 > p.footer-text:not(.footer-subtitle){
  max-width:32ch;
  margin-bottom:16px;
}

.footer-container .d-flex{display:flex}
.footer-container p.d-flex{
  align-items:center;
  gap:10px;
  margin-bottom:12px;
}
.footer-container p.d-flex > span{display:flex;flex:none}
.footer-container .social-icon{
  width:17px;
  height:17px;
  margin-right:0;
  display:block;
}
.footer-container .social-icon path{fill:var(--faint);fill-opacity:1;transition:fill .2s}
.footer-container p.d-flex a{
  color:var(--text);
  font-weight:500;
  text-decoration:none;
  transition:color .2s;
}
.footer-container p.d-flex:hover a{color:var(--brand-deep)}
.footer-container p.d-flex:hover .social-icon path{fill:var(--brand)}

.footer-container .footer-nav-link-container{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:12px;
}
.footer-container .footer-nav-link{
  color:var(--muted);
  text-decoration:none;
  transition:color .2s;
}
.footer-container .footer-nav-link:hover{color:var(--ink)}

.footer-container .copy-right{
  display:flex;
  justify-content:flex-start;
  border-top:1px solid var(--line);
  padding:20px var(--gutter);
  max-width:var(--max);
  margin-inline:auto;
  background:none;
}
.footer-container .copy-right span{
  font-size:13.5px;
  color:var(--faint);
}

.footer-container::after{
  content:"";
  display:block;
  height:3px;
  background:linear-gradient(90deg,var(--brand) 27.4%,#F5AF19 100%);
}

@media (max-width:1023px){
  .footer-container .row{grid-template-columns:1fr 1fr;row-gap:44px}
  .footer-container .col-md-4:first-child{grid-column:1 / -1}
  .footer-container .footer-subtitle{max-width:58ch}
}
@media (max-width:599px){
  .footer-container .row{grid-template-columns:1fr;row-gap:36px}
}