/* Northbound SEO — Polarnatt & Norrsken design system */
:root{
  --natt:#0A1322;
  --natt2:#0F1D33;
  --natt3:#15263F;
  --is:#F3F7FA;
  --vit:#FFFFFF;
  --text:#1B2A41;
  --dim:#52647D;
  --isdim:#A9BCD2;
  --a1:#38D9A0;
  --a2:#27B8CE;
  --a3:#7C6BF0;
  --line:#DFE8F0;
  --line-dark:rgba(169,188,210,.16);
  --aurora:linear-gradient(100deg,var(--a1),var(--a2) 52%,var(--a3));
  --r:16px;
  --maxw:1140px;
  --display:"Bricolage Grotesque",ui-sans-serif,system-ui,sans-serif;
  --body:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
body{font-family:var(--body);color:var(--text);background:var(--vit);line-height:1.65;font-size:1.0625rem;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;height:auto;display:block}
a{color:inherit}
:focus-visible{outline:3px solid var(--a2);outline-offset:3px;border-radius:4px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:var(--display);line-height:1.12;letter-spacing:-.015em;font-weight:700}
h1{font-size:clamp(2.1rem,5.2vw,3.6rem)}
h2{font-size:clamp(1.6rem,3.4vw,2.35rem);margin-bottom:.6em}
h3{font-size:1.22rem;margin-bottom:.45em}
p+p{margin-top:1em}

/* Eyebrow with north arrow */
.eyebrow{display:inline-flex;align-items:center;gap:.55em;font-size:.78rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--dim);margin-bottom:1.1rem}
.eyebrow::before{content:"";width:.7em;height:.85em;background:var(--aurora);clip-path:polygon(50% 0,100% 100%,50% 78%,0 100%)}
.on-dark .eyebrow{color:var(--isdim)}

/* Header */
.topbar{position:sticky;top:0;z-index:50;background:rgba(10,19,34,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line-dark)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:68px}
.logo{display:flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--vit);font-family:var(--display);font-weight:700;font-size:1.18rem;letter-spacing:-.01em}
.logo svg{width:30px;height:30px;flex:none}
.logo b{background:var(--aurora);-webkit-background-clip:text;background-clip:text;color:transparent}
nav.main{display:flex;align-items:center;gap:.25rem}
nav.main a{color:var(--isdim);text-decoration:none;font-size:.93rem;font-weight:600;padding:.55rem .75rem;border-radius:8px}
nav.main a:hover,nav.main a[aria-current]{color:var(--vit)}
nav.main a[aria-current]{background:var(--natt3)}
.has-sub{position:relative}
.has-sub>button{display:flex;align-items:center;gap:.35rem;background:none;border:0;color:var(--isdim);font:inherit;font-size:.93rem;font-weight:600;padding:.55rem .75rem;border-radius:8px;cursor:pointer}
.has-sub>button:hover{color:var(--vit)}
.has-sub>button::after{content:"";width:.45em;height:.45em;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px)}
.sub{position:absolute;top:100%;left:0;min-width:250px;background:var(--natt2);border:1px solid var(--line-dark);border-radius:12px;padding:.5rem;display:none;box-shadow:0 18px 50px rgba(4,10,20,.5)}
.has-sub:hover .sub,.has-sub:focus-within .sub,.has-sub.open .sub{display:block}
.sub a{display:block;padding:.55rem .8rem;border-radius:8px}
.cta-nav{background:var(--aurora);color:var(--natt)!important;font-weight:700!important;margin-left:.5rem}
.cta-nav:hover{filter:brightness(1.08)}
.menu-btn{display:none;background:none;border:1px solid var(--line-dark);border-radius:10px;color:var(--vit);padding:.5rem .7rem;font:inherit;font-weight:600;cursor:pointer}

/* Hero */
.hero{position:relative;background:var(--natt);color:var(--is);overflow:hidden;padding:5.5rem 0 5rem}
.hero.compact{padding:4.2rem 0 3.6rem}
.hero .wrap{position:relative;z-index:2;max-width:880px}
.hero p.lead{font-size:clamp(1.05rem,2vw,1.25rem);color:var(--isdim);margin-top:1.2rem;max-width:42rem}
.hero h1 em{font-style:normal;background:var(--aurora);-webkit-background-clip:text;background-clip:text;color:transparent}
.aurora-band{position:absolute;inset:-40% -20% auto;height:120%;z-index:1;pointer-events:none;opacity:.55;filter:blur(60px);
  background:
   radial-gradient(38% 55% at 22% 38%,rgba(56,217,160,.5),transparent 70%),
   radial-gradient(34% 50% at 55% 22%,rgba(39,184,206,.42),transparent 70%),
   radial-gradient(40% 60% at 84% 42%,rgba(124,107,240,.45),transparent 70%);
  animation:drift 16s ease-in-out infinite alternate}
@keyframes drift{from{transform:translateX(-2.5%) translateY(0)}to{transform:translateX(2.5%) translateY(3%)}}
.stars{position:absolute;inset:0;z-index:1;pointer-events:none;background-image:
 radial-gradient(1.2px 1.2px at 12% 22%,rgba(255,255,255,.8),transparent 100%),
 radial-gradient(1px 1px at 34% 64%,rgba(255,255,255,.55),transparent 100%),
 radial-gradient(1.4px 1.4px at 58% 18%,rgba(255,255,255,.7),transparent 100%),
 radial-gradient(1px 1px at 72% 52%,rgba(255,255,255,.5),transparent 100%),
 radial-gradient(1.3px 1.3px at 88% 30%,rgba(255,255,255,.75),transparent 100%),
 radial-gradient(1px 1px at 22% 84%,rgba(255,255,255,.4),transparent 100%),
 radial-gradient(1.1px 1.1px at 94% 78%,rgba(255,255,255,.5),transparent 100%)}
.hero-actions{display:flex;flex-wrap:wrap;gap:.9rem;margin-top:2.2rem}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.55em;font-weight:700;font-size:1rem;text-decoration:none;border-radius:999px;padding:.85em 1.6em;border:0;cursor:pointer;font-family:var(--body)}
.btn-aurora{background:var(--aurora);color:var(--natt)}
.btn-aurora:hover{filter:brightness(1.07)}
.btn-ghost{border:1px solid var(--line-dark);color:var(--is)}
.btn-ghost:hover{border-color:var(--isdim)}
.btn-navy{background:var(--natt);color:var(--vit)}
.btn-navy:hover{background:var(--natt3)}
.btn .arr{transition:transform .2s}
.btn:hover .arr{transform:translateX(3px)}

/* Sections */
section{padding:4.6rem 0}
.sec-ice{background:var(--is)}
.sec-dark{background:var(--natt);color:var(--is)}
.sec-dark h2,.sec-dark h3{color:var(--vit)}
.sec-dark p{color:var(--isdim)}
.sec-intro{max-width:46rem;margin-bottom:2.6rem}
.sec-intro p{color:var(--dim);font-size:1.1rem}
.sec-dark .sec-intro p{color:var(--isdim)}

/* Cards */
.grid{display:grid;gap:1.4rem}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--vit);border:1px solid var(--line);border-radius:var(--r);padding:1.7rem;position:relative}
.card.top-aurora::before{content:"";position:absolute;top:0;left:1.4rem;right:1.4rem;height:3px;border-radius:0 0 4px 4px;background:var(--aurora)}
.sec-dark .card{background:var(--natt2);border-color:var(--line-dark)}
.sec-dark .card p{color:var(--isdim)}
.card .ic{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:rgba(39,184,206,.12);color:var(--a2);margin-bottom:1rem}
.card .ic svg{width:22px;height:22px}
.card p{color:var(--dim);font-size:.97rem}
.card-link{display:inline-flex;align-items:center;gap:.4em;margin-top:1rem;font-weight:700;font-size:.93rem;color:var(--text);text-decoration:none}
.sec-dark .card-link{color:var(--a1)}
.card-link::after{content:"→";transition:transform .2s}
.card-link:hover::after{transform:translateX(3px)}
a.card{display:block;text-decoration:none;transition:transform .18s,box-shadow .18s}
a.card:hover{transform:translateY(-3px);box-shadow:0 16px 40px rgba(16,29,51,.1)}

/* Stat band */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.stat{border:1px solid var(--line-dark);border-radius:var(--r);padding:1.6rem;background:var(--natt2)}
.stat .n{font-family:var(--display);font-weight:700;font-size:clamp(2rem,4vw,2.9rem);background:var(--aurora);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.stat .l{font-weight:700;color:var(--vit);margin:.5rem 0 .25rem}
.stat p{font-size:.92rem}

/* Steps / process */
.steps{display:grid;gap:1.4rem;counter-reset:step}
.step{display:grid;grid-template-columns:54px 1fr;gap:1.2rem;background:var(--vit);border:1px solid var(--line);border-radius:var(--r);padding:1.5rem}
.sec-dark .step{background:var(--natt2);border-color:var(--line-dark)}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);font-family:var(--display);font-weight:700;font-size:1.25rem;width:54px;height:54px;border-radius:50%;display:grid;place-items:center;background:var(--natt);color:var(--vit);border:2px solid transparent;background-image:linear-gradient(var(--natt),var(--natt)),var(--aurora);background-origin:border-box;background-clip:padding-box,border-box}
.step p{color:var(--dim);font-size:.97rem;margin-top:.25rem}
.sec-dark .step p{color:var(--isdim)}

/* Checklists */
.ticks{list-style:none;display:grid;gap:.7rem}
.ticks li{display:flex;gap:.7rem;align-items:flex-start}
.ticks li::before{content:"";flex:none;margin-top:.32em;width:.8em;height:.95em;background:var(--aurora);clip-path:polygon(50% 0,100% 100%,50% 78%,0 100%)}
.ticks.cross li::before{background:#D86A6A;clip-path:polygon(20% 5%,5% 20%,35% 50%,5% 80%,20% 95%,50% 65%,80% 95%,95% 80%,65% 50%,95% 20%,80% 5%,50% 35%)}

/* Split layout */
.split{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.split .pane{min-width:0}

/* Compare (before/after, SEO vs GEO) */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:1.4rem}
.compare .col{border-radius:var(--r);padding:1.7rem;border:1px solid var(--line)}
.compare .col.bad{background:var(--is)}
.compare .col.good{background:var(--natt);color:var(--is);border-color:transparent}
.compare .col.good h3{color:var(--vit)}
.compare .tag{display:inline-block;font-size:.72rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;padding:.3em .8em;border-radius:999px;margin-bottom:1rem}
.compare .bad .tag{background:#E7D5D5;color:#8C3B3B}
.compare .good .tag{background:var(--aurora);color:var(--natt)}

/* FAQ */
.faq{max-width:780px;margin:0 auto}
.faq details{border:1px solid var(--line);border-radius:14px;background:var(--vit);margin-bottom:.9rem;overflow:hidden}
.sec-dark .faq details{background:var(--natt2);border-color:var(--line-dark)}
.faq summary{cursor:pointer;font-weight:700;font-family:var(--display);font-size:1.05rem;padding:1.1rem 1.3rem;list-style:none;display:flex;justify-content:space-between;gap:1rem;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;color:var(--a2);flex:none;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 1.3rem 1.2rem;color:var(--dim);font-size:.98rem}
.sec-dark .faq .a{color:var(--isdim)}

/* Citation card (AI page signature) */
.cite-demo{background:var(--natt2);border:1px solid var(--line-dark);border-radius:var(--r);padding:1.6rem;font-size:.95rem}
.cite-demo .q{color:var(--isdim);font-style:italic;margin-bottom:1rem}
.cite-demo .ans{background:var(--natt3);border-radius:12px;padding:1.1rem 1.2rem;color:var(--is)}
.cite-demo .src{display:inline-flex;align-items:center;gap:.45em;margin-top:.9rem;background:rgba(56,217,160,.14);color:var(--a1);font-weight:700;font-size:.8rem;border-radius:999px;padding:.35em .9em}
.cite-demo .src::before{content:"";width:.6em;height:.6em;border-radius:50%;background:var(--a1)}

/* CTA band */
.cta-band{position:relative;background:var(--natt);color:var(--vit);overflow:hidden}
.cta-band .wrap{position:relative;z-index:2;text-align:center;max-width:760px}
.cta-band p{color:var(--isdim);margin:1rem auto 2rem;max-width:38rem}

/* Footer */
footer{background:var(--natt);color:var(--isdim);padding:4rem 0 2.5rem;border-top:1px solid var(--line-dark)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2.5rem;margin-bottom:3rem}
footer h4{color:var(--vit);font-family:var(--display);font-size:.95rem;margin-bottom:1rem}
footer ul{list-style:none;display:grid;gap:.55rem}
footer a{color:var(--isdim);text-decoration:none;font-size:.93rem}
footer a:hover{color:var(--vit)}
.foot-bottom{border-top:1px solid var(--line-dark);padding-top:1.6rem;display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;font-size:.85rem}

/* Breadcrumb */
.crumbs{font-size:.85rem;color:var(--isdim);margin-bottom:1.4rem}
.crumbs a{color:var(--isdim)}
.crumbs a:hover{color:var(--vit)}

/* Prose service body */
.prose{max-width:760px}
.prose h2{margin-top:2.2rem}
.prose ul{margin:1em 0 1em 1.2em}

/* Forms */
form .row{display:grid;gap:1.1rem;grid-template-columns:1fr 1fr;margin-bottom:1.1rem}
label{font-weight:700;font-size:.9rem;display:block;margin-bottom:.4rem}
input,textarea{width:100%;font:inherit;padding:.8em 1em;border:1px solid var(--line);border-radius:12px;background:var(--vit);color:var(--text)}
input:focus,textarea:focus{outline:3px solid rgba(39,184,206,.35);border-color:var(--a2)}

@media(max-width:920px){
  .g3,.g4,.stats{grid-template-columns:repeat(2,1fr)}
  .split,.compare{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  nav.main{position:fixed;inset:68px 0 auto 0;background:var(--natt);flex-direction:column;align-items:stretch;padding:1rem 1.2rem 1.6rem;display:none;border-bottom:1px solid var(--line-dark);max-height:calc(100vh - 68px);overflow:auto}
  nav.main.open{display:flex}
  .has-sub .sub{position:static;display:block;box-shadow:none;border:0;background:transparent;padding-left:1rem}
  .has-sub>button{width:100%;justify-content:space-between}
  .menu-btn{display:block}
  .cta-nav{margin:0;text-align:center;justify-content:center;display:flex}
}
@media(max-width:560px){
  .g2,.g3,.g4,.stats,.foot-grid,form .row{grid-template-columns:1fr}
  section{padding:3.4rem 0}
  .hero{padding:4rem 0 3.4rem}
  .step{grid-template-columns:1fr}
}