:root{
  --bg:#05080f;
  --bg-soft:#0b1220;
  --ink:#ecf2ff;
  --muted:#9db0cf;
  --line:rgba(76,114,161,.35);
  --teal:#1cd6a7;
  --blue:#2f8fff;
  --violet:#6759ff;
  --content:1600px;
}

*{ box-sizing:border-box; }
html,body{ min-height:100%; }
body{
  margin:0;
  color:var(--ink);
  font-family:Inter,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background:
    radial-gradient(circle at 20% 15%, rgba(28,214,167,.11), transparent 40%),
    radial-gradient(circle at 85% 8%, rgba(47,143,255,.13), transparent 45%),
    radial-gradient(circle at 65% 75%, rgba(103,89,255,.12), transparent 48%),
    var(--bg);
}

body::before,
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
}

body::before{
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 68px 68px;
  opacity:.36;
  animation:gridShift 18s linear infinite;
}

body::after{
  background: radial-gradient(circle at 50% -10%, rgba(255,255,255,.08), transparent 50%);
  mix-blend-mode:screen;
}

@keyframes gridShift {
  from { transform: translateY(0px); }
  to { transform: translateY(68px); }
}

a{ color:inherit; text-decoration:none; }

.site-header{
  position:sticky;
  top:0;
  width:100%;
  z-index:20;
  backdrop-filter: blur(10px);
  background: linear-gradient(180deg, rgba(5,8,15,.95), rgba(5,8,15,.76));
  border-bottom:1px solid rgba(255,255,255,.08);
}

.header-inner,
.content,
.hero,
.programmes,
.patents,
.contact,
.site-footer{
  width:min(var(--content), 100% - 1.25rem);
  margin-inline:auto;
}

.header-inner{
  width:100%;
  max-width:none;
  padding-inline:1rem;
  margin:0;
  min-height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:2rem;
}

.brand{
  display:flex;
  align-items:center;
  gap:.9rem;
  min-width:0;
}

.brand img{
  width:42px;
  height:42px;
  display:block;
  object-fit:contain;
}

.brand-copy strong{
  display:block;
  letter-spacing:.18em;
  text-transform:uppercase;
  font-size:.78rem;
}

.brand-copy span{
  color:var(--muted);
  font-size:.82rem;
  letter-spacing:.06em;
  text-transform:uppercase;
}

.nav{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:flex-end;
  gap:1rem;
  font-size:.9rem;
  letter-spacing:.05em;
  text-transform:uppercase;
  color:#d2ddf5;
}

.nav a:hover{ color:#fff; }

.nav-item{
  position:relative;
}

.dropdown-toggle{
  appearance:none;
  border:0;
  background:transparent;
  color:inherit;
  font:inherit;
  text-transform:uppercase;
  letter-spacing:.05em;
  cursor:pointer;
  padding:0;
}

.dropdown-toggle::after{ content:" ▾"; font-size:.8em; color:var(--teal); }

.dropdown-menu{
  position:absolute;
  top:calc(100% + .65rem);
  right:0;
  min-width:340px;
  display:grid;
  gap:.4rem;
  padding:.65rem;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(11,18,32,.97);
  opacity:0;
  transform:translateY(-8px);
  visibility:hidden;
  transition:all .18s ease;
}

.dropdown-menu a{
  font-size:.78rem;
  text-transform:none;
  letter-spacing:.02em;
  color:#d7e6ff;
  line-height:1.35;
  padding:.4rem .45rem;
  border:1px solid transparent;
}

.dropdown-menu a:hover,
.dropdown-menu a:focus-visible{
  border-color:rgba(28,214,167,.45);
  color:#fff;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu{
  opacity:1;
  transform:translateY(0);
  visibility:visible;
}

.content{
  min-height:calc(100vh - 72px);
  display:grid;
  align-content:center;
  padding:4.5rem 0 2rem;
  gap:3rem;
}

.hero h1{
  margin:0 0 1rem;
  font-size:clamp(2rem, 5vw, 4rem);
  line-height:1.03;
  max-width:14ch;
}

.hero p{
  margin:0;
  max-width:65ch;
  color:var(--muted);
  font-size:clamp(1rem, 1.5vw, 1.2rem);
  line-height:1.65;
}

.programmes{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:1rem;
}

.programme,
.patent-card,
.contact{
  padding:1.2rem;
  border:1px solid rgba(255,255,255,.11);
  background:linear-gradient(170deg, rgba(11,18,32,.88), rgba(5,8,15,.86));
}

.programme h2,
.patents h2,
.contact h2{
  margin:0 0 .55rem;
  font-size:1rem;
  letter-spacing:.08em;
  text-transform:uppercase;
}

.programme p,
.patent-card p,
.contact p,
.patent-card li{
  margin:0;
  color:var(--muted);
  line-height:1.55;
  font-size:.95rem;
}

.patents{
  padding:1.2rem 0 0;
}

.patents h2{
  margin-bottom:1rem;
}

.patent-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:1rem;
}

.patent-card h3{
  margin:0 0 .5rem;
  font-size:1.05rem;
}

.patent-card ul{
  margin:.8rem 0 0;
  padding-left:1rem;
  display:grid;
  gap:.35rem;
}

.patent-card a{
  color:#b6f7e3;
  text-decoration:underline;
  text-underline-offset:2px;
}


.contact-details{
  margin:.95rem 0 0;
  padding-left:1rem;
  display:grid;
  gap:.45rem;
}

.contact-details li{
  color:var(--muted);
  line-height:1.55;
  font-size:.95rem;
}

.contact-details a{
  color:#b6f7e3;
  text-decoration:underline;
  text-underline-offset:2px;
}

.contact{
  margin:2rem auto 4rem;
}

.site-footer{
  margin-bottom:2rem;
}

@media (max-width: 960px){
  .programmes,
  .patent-grid{ grid-template-columns:1fr; }
  .header-inner{ padding: .7rem 0; align-items:flex-start; flex-direction:column; }
  .nav{ font-size:.82rem; gap:.85rem; }
  .dropdown-menu{
    left:0;
    right:auto;
    min-width:min(88vw, 360px);
  }
  .content{ padding-top:3rem; }
}

.patent-page{
  align-content:start;
}

.patent-hero .eyebrow{
  margin:0 0 .45rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  font-size:.78rem;
  color:#b6f7e3;
}

.patent-detail{
  width:100%;
  padding:1.2rem;
  border:1px solid rgba(255,255,255,.11);
  background:linear-gradient(170deg, rgba(11,18,32,.88), rgba(5,8,15,.86));
}

.patent-stats{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:.8rem;
  margin:1rem 0;
}

.stat-card{
  border:1px solid rgba(255,255,255,.14);
  padding:.9rem;
  background:rgba(6,10,18,.7);
}

.stat-card h3{
  margin:0 0 .35rem;
  font-size:.82rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:#b6f7e3;
}

.stat-card p{
  margin:0;
  color:#d5e2f8;
  line-height:1.45;
}

.patent-list{
  margin:.8rem 0;
  padding-left:1.1rem;
  display:grid;
  gap:.45rem;
  color:var(--muted);
}

@media (max-width: 960px){
  .patent-stats{ grid-template-columns:1fr; }
}

.patent-detail .patent-number{
  font-size:1.35rem;
  color:#fff;
  margin:0 0 1rem;
}

.patent-detail a{
  color:#b6f7e3;
  text-decoration:underline;
  text-underline-offset:2px;
}