/* Sigma Delta Engineering — stylesheet
   Author: in-house web team. Last revision: 2026-03
   ------------------------------------------------- */

:root{
  --navy:#0b1b33;
  --navy-2:#122a4d;
  --ink:#12203a;
  --body:#42536b;
  --line:#e3e8f0;
  --paper:#ffffff;
  --paper-2:#f5f8fc;
  --brand:#0f5fd4;
  --brand-dk:#0a48a3;
  --amber:#f5a623;
  --teal:#12a594;
  --radius:14px;
  --shadow-s:0 1px 2px rgba(11,27,51,.06),0 4px 14px rgba(11,27,51,.06);
  --shadow-m:0 12px 34px rgba(11,27,51,.12);
  --max:1180px;
  --font-display:"Space Grotesk",Segoe UI,Helvetica,Arial,sans-serif;
  --font-body:"Inter",Segoe UI,Helvetica,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font-body);color:var(--body);
  background:var(--paper);font-size:17px;line-height:1.68;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-dk);text-decoration:underline}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--ink);line-height:1.16;margin:0 0 .6em;letter-spacing:-.02em}
h1{font-size:clamp(2.1rem,4.6vw,3.5rem);font-weight:700}
h2{font-size:clamp(1.6rem,3vw,2.35rem);font-weight:700}
h3{font-size:1.18rem;font-weight:600}
p{margin:0 0 1.1em}
ul,ol{padding-left:1.15rem}
li{margin:.35em 0}
hr{border:0;border-top:1px solid var(--line);margin:2.5rem 0}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px;border-radius:4px}

.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
.section{padding:76px 0}
.section--tight{padding:52px 0}
.section--alt{background:var(--paper-2);border-block:1px solid var(--line)}
.eyebrow{
  font-family:var(--font-display);font-size:.76rem;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--brand);margin:0 0 .8rem
}
.lead{font-size:1.12rem;color:var(--body)}
.center{text-align:center}
.measure{max-width:720px}
.center.measure{margin-inline:auto}
.muted{color:#6b7a92;font-size:.94rem}

/* skip link */
.skip{position:absolute;left:-9999px;top:0;background:var(--navy);color:#fff;padding:10px 16px;z-index:200}
.skip:focus{left:12px;top:12px}

/* ---------- header ---------- */
.topbar{background:var(--navy);color:#c8d6ea;font-size:.82rem}
.topbar .wrap{display:flex;gap:20px;flex-wrap:wrap;justify-content:space-between;padding-block:8px}
.topbar a{color:#dce7f6}
.topbar span{display:inline-flex;align-items:center;gap:7px}

.site-header{
  position:sticky;top:0;z-index:80;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(150%) blur(10px);border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease
}
.site-header.is-stuck{box-shadow:0 6px 22px rgba(11,27,51,.09)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
.brand{display:flex;align-items:center;gap:11px}
.brand:hover{text-decoration:none}
.brand img{width:38px;height:38px}
.brand b{font-family:var(--font-display);font-size:1.16rem;color:var(--ink);letter-spacing:-.02em;display:block;line-height:1.1}
.brand small{display:block;font-size:.66rem;letter-spacing:.15em;text-transform:uppercase;color:#7c8aa1}
.menu{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.menu a{
  display:block;padding:9px 13px;border-radius:9px;color:var(--ink);
  font-size:.95rem;font-weight:500;transition:background .2s,color .2s
}
.menu a:hover{background:var(--paper-2);color:var(--brand);text-decoration:none}
.menu a[aria-current="page"]{color:var(--brand);background:#eaf2fe}
.nav-cta{display:flex;align-items:center;gap:10px}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:10px;padding:9px 11px;cursor:pointer}
.burger span{display:block;width:20px;height:2px;background:var(--ink);margin:4px 0;transition:.25s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

@media (max-width:960px){
  .burger{display:block}
  .menu{
    position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;
    background:#fff;border-bottom:1px solid var(--line);padding:10px 16px 18px;
    box-shadow:var(--shadow-m);display:none
  }
  .menu.is-open{display:flex;animation:drop .22s ease both}
  .nav-cta .btn{display:none}
}
@keyframes drop{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;font-family:var(--font-display);
  font-weight:600;font-size:.96rem;padding:12px 22px;border-radius:11px;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease,box-shadow .22s ease,background .2s ease
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn--primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px rgba(15,95,212,.28)}
.btn--primary:hover{background:var(--brand-dk);color:#fff}
.btn--ghost{border-color:var(--line);background:#fff;color:var(--ink)}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn--light{background:#fff;color:var(--navy)}
.btn--outline-light{border-color:rgba(255,255,255,.45);color:#fff}
.btn--outline-light:hover{background:rgba(255,255,255,.12);color:#fff}
.btn--sm{padding:9px 16px;font-size:.88rem}

/* ---------- hero ---------- */
.hero{position:relative;color:#fff;background:var(--navy);overflow:hidden}
.hero__bg{position:absolute;inset:0}
.hero__bg img{width:100%;height:100%;object-fit:cover;opacity:.42}
.hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(8,18,35,.95) 8%,rgba(9,24,48,.82) 45%,rgba(9,26,54,.55) 100%)
}
.hero__inner{position:relative;padding:104px 0 92px;max-width:720px}
.hero h1{color:#fff}
.hero p{color:#cfdcee;font-size:1.13rem}
.hero .btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.badge-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}
.badge{
  display:inline-flex;align-items:center;gap:7px;font-size:.78rem;letter-spacing:.04em;
  padding:6px 12px;border-radius:999px;border:1px solid rgba(255,255,255,.25);
  background:rgba(255,255,255,.07);color:#e3ecf8
}
.hero-strip{background:var(--navy-2);color:#cddaeb;border-top:1px solid rgba(255,255,255,.09)}
.hero-strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;padding-block:22px}
.hero-strip b{display:block;font-family:var(--font-display);font-size:1.6rem;color:#fff}
.hero-strip small{font-size:.8rem}
@media(max-width:760px){.hero-strip .wrap{grid-template-columns:repeat(2,1fr)}}

.page-head{background:var(--navy);color:#fff;padding:64px 0 58px;position:relative;overflow:hidden}
.page-head::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(15,95,212,.5),transparent 65%)
}
.page-head h1{color:#fff;margin-bottom:.35em}
.page-head p{color:#c7d6e9;max-width:640px;margin:0}
.crumbs{font-size:.83rem;color:#9fb3cd;margin-bottom:14px;position:relative;z-index:2}
.crumbs a{color:#cddcef}

/* ---------- grids & cards ---------- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media(max-width:980px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  box-shadow:var(--shadow-s);transition:transform .25s ease,box-shadow .25s ease,border-color .25s
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-m);border-color:#cddcf3}
.card h3{margin-bottom:.45em}
.card p:last-child{margin-bottom:0}
.card__ico{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;
  background:#eaf2fe;color:var(--brand)
}
.card__ico svg{width:22px;height:22px}
.card--media{padding:0;overflow:hidden}
.card--media img{aspect-ratio:16/10;object-fit:cover;transition:transform .5s ease}
.card--media:hover img{transform:scale(1.05)}
.card--media .card__body{padding:24px}
.card--flat{box-shadow:none}
.card a.more{font-family:var(--font-display);font-weight:600;font-size:.9rem}

.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
@media(max-width:900px){.split{grid-template-columns:1fr;gap:30px}}
.figure{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-m);position:relative}
.figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:.82rem;color:#eaf1fa;
  background:linear-gradient(transparent,rgba(8,18,35,.85))
}

.checks{list-style:none;padding:0;margin:0}
.checks li{display:flex;gap:11px;align-items:flex-start;margin:.6em 0}
.checks li::before{
  content:"";flex:0 0 20px;height:20px;margin-top:3px;border-radius:50%;background:#e6f6f2;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2312a594' stroke-width='3'><path d='M20 6L9 17l-5-5'/></svg>");
  background-size:13px;background-repeat:no-repeat;background-position:center
}

.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:18px}
.steps li{
  counter-increment:s;background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:12px;padding:22px 24px 22px 68px;position:relative;box-shadow:var(--shadow-s)
}
.steps li::before{
  content:"0" counter(s);position:absolute;left:22px;top:20px;font-family:var(--font-display);
  font-weight:700;color:var(--brand);font-size:1.05rem
}
.steps h3{margin-bottom:.3em}
.steps p{margin:0;font-size:.96rem}

.stat-band{background:var(--navy);color:#fff}
.stat-band .grid{gap:26px}
.stat-band b{font-family:var(--font-display);font-size:2.2rem;display:block;color:#fff}
.stat-band span{color:#b9cae0;font-size:.92rem}

table{width:100%;border-collapse:collapse;font-size:.95rem;background:#fff}
th,td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
th{background:var(--paper-2);font-family:var(--font-display);color:var(--ink);font-weight:600}
.table-scroll{overflow-x:auto;border-radius:12px}

blockquote{
  margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-s)
}
blockquote p{font-size:1.02rem;color:var(--ink)}
blockquote footer{font-size:.88rem;color:#6b7a92}
.stars{color:var(--amber);letter-spacing:2px;margin-bottom:10px}

.logo-row{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;align-items:center}
.logo-row span{
  font-family:var(--font-display);font-weight:600;color:#7d8ca3;border:1px dashed var(--line);
  border-radius:10px;padding:11px 20px;background:#fff;font-size:.92rem
}

details.faq{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:0;margin:0 0 12px;
  box-shadow:var(--shadow-s);overflow:hidden
}
details.faq summary{
  cursor:pointer;padding:18px 22px;font-family:var(--font-display);font-weight:600;color:var(--ink);
  list-style:none;display:flex;justify-content:space-between;gap:14px;align-items:center
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";font-size:1.35rem;color:var(--brand);transition:transform .2s}
details.faq[open] summary::after{transform:rotate(45deg)}
details.faq .faq__body{padding:0 22px 18px;font-size:.97rem}

.cta-band{
  background:linear-gradient(120deg,var(--brand-dk),#0b3f92 55%,var(--navy));color:#fff;
  border-radius:18px;padding:44px;display:flex;gap:26px;justify-content:space-between;
  align-items:center;flex-wrap:wrap;box-shadow:var(--shadow-m)
}
.cta-band h2{color:#fff;margin-bottom:.3em}
.cta-band p{color:#d3e2f7;margin:0;max-width:560px}

/* ---------- forms ---------- */
form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:680px){form .row{grid-template-columns:1fr}}
label{display:block;font-size:.87rem;font-weight:600;color:var(--ink);margin:0 0 6px}
input,select,textarea{
  width:100%;font:inherit;font-size:.96rem;color:var(--ink);background:#fff;
  border:1px solid var(--line);border-radius:10px;padding:11px 13px;transition:border-color .2s,box-shadow .2s
}
input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,95,212,.14);outline:none}
.field{margin-bottom:16px}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:.88rem;font-weight:400;color:var(--body)}
.consent input{width:auto;margin-top:4px}
.form-note{font-size:.83rem;color:#6b7a92}
.form-status{display:none;margin-top:14px;padding:13px 16px;border-radius:10px;font-size:.92rem}
.form-status.ok{display:block;background:#e6f6f2;color:#0b6b5f;border:1px solid #bfe6de}

/* ---------- footer ---------- */
.site-footer{background:var(--navy);color:#a9bdd6;font-size:.94rem;padding:58px 0 0;margin-top:0}
.site-footer h4{color:#fff;font-size:.82rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:16px}
.site-footer a{color:#cddcef}
.site-footer a:hover{color:#fff}
.foot-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1.25fr;gap:34px}
@media(max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.foot-grid{grid-template-columns:1fr}}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:.45em 0}
.foot-brand{display:flex;gap:11px;align-items:center;margin-bottom:14px}
.foot-brand img{width:36px;height:36px}
.foot-brand b{font-family:var(--font-display);color:#fff;font-size:1.1rem}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:42px;padding:18px 0;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.85rem
}

/* ---------- cookie banner ---------- */
.cookie{
  position:fixed;left:16px;right:16px;bottom:16px;z-index:120;background:#fff;
  border:1px solid var(--line);border-radius:16px;box-shadow:0 18px 46px rgba(11,27,51,.22);
  padding:22px 24px;max-width:760px;margin:0 auto;display:none
}
.cookie.is-visible{display:block;animation:cookieUp .35s ease both}
@keyframes cookieUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
.cookie h3{font-size:1.05rem;margin-bottom:.35em}
.cookie p{font-size:.9rem;margin-bottom:14px}
.cookie__actions{display:flex;gap:10px;flex-wrap:wrap}
.cookie__prefs{border-top:1px solid var(--line);margin-top:16px;padding-top:14px;display:none}
.cookie__prefs.is-open{display:block}
.cookie__prefs label{display:flex;gap:10px;align-items:flex-start;font-weight:500;margin-bottom:10px}
.cookie__prefs input{width:auto;margin-top:4px}
.cookie__prefs small{display:block;font-weight:400;color:#6b7a92}

/* ---------- misc ---------- */
.to-top{
  position:fixed;right:18px;bottom:18px;z-index:90;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--line);background:#fff;color:var(--brand);display:grid;place-items:center;
  box-shadow:var(--shadow-s);cursor:pointer;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s
}
.to-top.is-visible{opacity:1;pointer-events:auto}
.to-top:hover{transform:translateY(-3px)}

.legal h2{margin-top:2.2em;font-size:1.45rem}
.legal h3{margin-top:1.6em}
.legal{max-width:820px}
.legal .toc{background:var(--paper-2);border:1px solid var(--line);border-radius:12px;padding:20px 24px}
.legal .toc ul{margin:0}

.reveal{opacity:0;transform:translateY(22px)}
.reveal.is-in{opacity:1;transform:none;transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.3,1)}
@media (prefers-reduced-motion:reduce){
  .reveal,.reveal.is-in{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .card:hover,.btn:hover{transform:none}
}