/* ═══════════════════════════════════════════════════════════
   NexaLab Scientific — landing page
   Aesthetic: "instrument grade" — abyssal navy, spectral accents
   Type: Archivo (UI) · Instrument Serif (display accents) · JetBrains Mono (data)
   ═══════════════════════════════════════════════════════════ */

:root{
  /* surfaces */
  --abyss:      #050B1A;
  --deep:       #071228;
  --surface:    #0B1A33;
  --surface-2:  #0F2340;
  --line:       rgba(140,180,230,.14);
  --line-strong:rgba(140,180,230,.28);

  /* ink */
  --paper:      #E8F1FF;
  --paper-dim:  #A8BEDC;
  --muted:      #6F87A8;

  /* spectral accents */
  --cyan:       #38E1FF;
  --cyan-deep:  #0FB4DC;
  --indigo:     #7B8CFF;
  --magenta:    #FF4D9D;

  /* type */
  --f-ui:    'Archivo', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --f-disp:  'Instrument Serif', 'Iowan Old Style', Georgia, serif;
  --f-mono:  'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;

  /* rhythm */
  --gut: clamp(1.25rem, 4vw, 3rem);
  --maxw: 1240px;
  --sec-y: clamp(5rem, 11vw, 9.5rem);
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;

  --ease: cubic-bezier(.22,.68,.24,1);
}

*,*::before,*::after{ box-sizing:border-box; }

html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } }

body{
  margin:0;
  background:var(--abyss);
  color:var(--paper);
  font-family:var(--f-ui);
  font-size:17px;
  line-height:1.65;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

/* atmospheric field behind everything */
body::before{
  content:'';
  position:fixed; inset:0; z-index:-2;
  background:
    radial-gradient(1100px 700px at 78% -6%,  rgba(56,225,255,.14), transparent 62%),
    radial-gradient(900px 620px  at 8% 22%,   rgba(123,140,255,.10), transparent 60%),
    radial-gradient(800px 800px  at 96% 88%,  rgba(255,77,157,.075), transparent 58%),
    linear-gradient(180deg, #061024 0%, #050B1A 42%, #04091A 100%);
}
/* engineering grid */
body::after{
  content:'';
  position:fixed; inset:0; z-index:-1; pointer-events:none;
  background-image:
    linear-gradient(to right,  rgba(140,180,230,.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(140,180,230,.055) 1px, transparent 1px);
  background-size:76px 76px;
  mask-image:radial-gradient(circle at 50% 22%, #000 0%, transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 22%, #000 0%, transparent 78%);
}

.grain{
  position:fixed; inset:0; z-index:1; pointer-events:none; opacity:.032;
  mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

img{ max-width:100%; height:auto; display:block; }

.wrap{ width:100%; max-width:var(--maxw); margin-inline:auto; padding-inline:var(--gut); }
.mono{ font-family:var(--f-mono); font-variant-numeric:tabular-nums; }

.skip-link{
  position:absolute; left:-9999px; top:0; z-index:200;
  background:var(--cyan); color:var(--abyss); padding:.75rem 1.25rem;
  font-weight:600; border-radius:0 0 var(--r-sm) 0;
}
.skip-link:focus{ left:0; }

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:4px;
}

::selection{ background:rgba(56,225,255,.28); color:#fff; }

/* ─────────────── icons ─────────────── */
.ico{
  width:1.05em; height:1.05em; flex:none;
  fill:none; stroke:currentColor; stroke-width:1.7;
  stroke-linecap:round; stroke-linejoin:round;
}

/* ─────────────── buttons ─────────────── */
.btn{
  --bg:transparent;
  display:inline-flex; align-items:center; gap:.6em;
  min-height:44px; padding:.72em 1.25em;
  font-family:var(--f-ui); font-size:.95rem; font-weight:600;
  letter-spacing:-.01em; text-decoration:none;
  border:1px solid transparent; border-radius:999px;
  cursor:pointer; position:relative; overflow:hidden;
  transition:transform .22s var(--ease), box-shadow .22s var(--ease),
             background-color .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
}
.btn--lg{ padding:.92em 1.6em; font-size:1rem; min-height:52px; }

.btn--primary{
  background:linear-gradient(115deg, var(--cyan) 0%, var(--indigo) 62%, var(--magenta) 130%);
  color:#02101E;
  box-shadow:0 1px 0 rgba(255,255,255,.5) inset, 0 10px 30px -12px rgba(56,225,255,.7);
}
.btn--primary:hover{ transform:translateY(-2px); box-shadow:0 1px 0 rgba(255,255,255,.55) inset, 0 18px 44px -14px rgba(56,225,255,.85); }
.btn--primary:active{ transform:translateY(0); }

.btn--ghost{
  color:var(--paper);
  border-color:var(--line-strong);
  background:rgba(11,26,51,.5);
  backdrop-filter:blur(8px);
}
.btn--ghost:hover{ border-color:var(--cyan); color:var(--cyan); transform:translateY(-2px); }
.btn--ghost:active{ transform:translateY(0); }

/* ─────────────── nav ─────────────── */
.nav{
  position:fixed; inset:0 0 auto 0; z-index:100;
  transition:background-color .3s var(--ease), backdrop-filter .3s var(--ease), border-color .3s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.is-stuck{
  background:rgba(5,11,26,.82);
  backdrop-filter:blur(18px) saturate(150%);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  border-bottom-color:var(--line);
}
.nav__inner{
  max-width:var(--maxw); margin-inline:auto;
  padding:1.05rem var(--gut);
  display:flex; align-items:center; gap:1.5rem;
  transition:padding .3s var(--ease);
}
.nav.is-stuck .nav__inner{ padding-block:.7rem; }

.nav__progress{
  height:2px; width:0%;
  background:linear-gradient(90deg, var(--cyan), var(--indigo) 55%, var(--magenta));
  transition:width .1s linear;
}

.brand{
  display:flex; align-items:center; gap:.7rem; min-height:44px;
  text-decoration:none; color:var(--paper); margin-right:auto;
}
.brand__mark{ width:38px; height:38px; flex:none; }
.brand__ring{ transform-origin:32px 32px; animation:spin 9s linear infinite; }
@keyframes spin{ to{ transform:rotate(360deg); } }
.brand__text{ display:flex; flex-direction:column; line-height:1; }
.brand__name{ font-size:1.18rem; font-weight:700; letter-spacing:-.025em; }
.brand__sub{
  font-family:var(--f-mono); font-size:.6rem; font-weight:500;
  letter-spacing:.42em; text-transform:uppercase; color:var(--paper-dim); margin-top:.32rem;
}

.nav__links{ display:flex; align-items:center; gap:.25rem; }
.nav__links a{
  display:flex; align-items:center;
  padding:.55rem .8rem; border-radius:999px;
  color:var(--paper-dim); text-decoration:none;
  font-size:.9rem; font-weight:500;
  transition:color .2s var(--ease), background-color .2s var(--ease);
}
.nav__links a:hover{ color:var(--paper); background:rgba(140,180,230,.08); }
.nav__links a.is-active{ color:var(--paper); }

.nav__burger{
  display:none; width:44px; height:44px; padding:0;
  background:none; border:1px solid var(--line-strong); border-radius:10px;
  cursor:pointer; flex-direction:column; align-items:center; justify-content:center; gap:5px;
}
.nav__burger span{ display:block; width:18px; height:1.6px; background:var(--paper); border-radius:2px; transition:transform .28s var(--ease), opacity .2s var(--ease); }
.nav__burger[aria-expanded="true"] span:nth-child(1){ transform:translateY(6.6px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.nav__burger[aria-expanded="true"] span:nth-child(3){ transform:translateY(-6.6px) rotate(-45deg); }

/* ─────────────── hero ─────────────── */
.hero{
  position:relative;
  min-height:100svh;
  display:flex; flex-direction:column; justify-content:center;
  padding-block:clamp(6.5rem,12vh,8.5rem) clamp(4rem,7vh,5.5rem);
  overflow:hidden;
  isolation:isolate;
}
.hero__spectrum{
  position:absolute; inset:auto 0 0 0; width:100%; height:52%;
  z-index:-1; opacity:1;
  mask-image:linear-gradient(to top, #000 12%, transparent 96%);
  -webkit-mask-image:linear-gradient(to top, #000 12%, transparent 96%);
}
.hero__glow{
  position:absolute; width:640px; height:640px; z-index:-1;
  left:var(--mx,70%); top:var(--my,28%); transform:translate(-50%,-50%);
  background:radial-gradient(circle, rgba(56,225,255,.13), transparent 66%);
  pointer-events:none;
  transition:left .5s var(--ease), top .5s var(--ease);
}
.hero__rule{
  position:absolute; left:var(--gut); right:var(--gut); bottom:0; height:1px;
  background:linear-gradient(90deg, transparent, var(--line-strong) 20%, var(--line-strong) 80%, transparent);
}
.hero__inner{ position:relative; }

.eyebrow{
  display:inline-flex; align-items:center; gap:.65rem;
  font-family:var(--f-mono); font-size:.72rem; font-weight:500;
  letter-spacing:.2em; text-transform:uppercase; color:var(--paper-dim);
  padding:.5rem .95rem; margin:0 0 1.9rem;
  border:1px solid var(--line); border-radius:999px;
  background:rgba(11,26,51,.55); backdrop-filter:blur(8px);
}
.eyebrow__dot{
  width:6px; height:6px; border-radius:50%; background:var(--cyan); flex:none;
  box-shadow:0 0 0 0 rgba(56,225,255,.6); animation:pulse 2.6s var(--ease) infinite;
}
@keyframes pulse{ 70%{ box-shadow:0 0 0 9px rgba(56,225,255,0); } 100%{ box-shadow:0 0 0 0 rgba(56,225,255,0); } }

.hero__title{
  margin:0 0 1.6rem;
  font-size:clamp(2.7rem, 7.2vw, 6.2rem);
  font-weight:700;
  line-height:.97;
  letter-spacing:-.042em;
  max-width:16ch;
}
.hero__title span{ display:block; }
.hero__title em{
  font-family:var(--f-disp); font-style:italic; font-weight:400;
  letter-spacing:-.01em;
  background:linear-gradient(100deg, var(--cyan) 5%, var(--indigo) 48%, var(--magenta) 96%);
  -webkit-background-clip:text; background-clip:text; color:transparent;
  margin-right:-.06em;
}

.hero__lede{
  margin:0 0 2.6rem; max-width:56ch;
  font-size:clamp(1.02rem, 1.6vw, 1.24rem);
  color:var(--paper-dim); line-height:1.7;
}

.hero__actions{ display:flex; flex-wrap:wrap; gap:.85rem; margin-bottom:0; }

.hero__scroll{
  position:absolute; left:50%; bottom:1.6rem; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:.6rem;
  color:var(--muted); text-decoration:none;
  font-size:.62rem; letter-spacing:.34em; text-transform:uppercase;
  transition:color .25s var(--ease);
}
.hero__scroll:hover{ color:var(--cyan); }
.hero__scroll-line{ width:1px; height:38px; background:linear-gradient(to bottom, transparent, var(--cyan)); }

/* ─────────────── ticker ─────────────── */
.ticker{
  border-block:1px solid var(--line);
  background:rgba(7,18,40,.55);
  overflow:hidden; padding-block:.95rem;
  mask-image:linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image:linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.ticker__track{
  display:flex; align-items:center; gap:2.2rem; width:max-content;
  animation:slide 46s linear infinite;
}
.ticker span{
  font-family:var(--f-mono); font-size:.74rem; font-weight:500;
  letter-spacing:.22em; text-transform:uppercase; color:var(--paper-dim); white-space:nowrap;
}
.ticker i{ color:var(--cyan); font-style:normal; font-size:.55rem; opacity:.75; }
@keyframes slide{ to{ transform:translateX(-50%); } }

/* ─────────────── section scaffolding ─────────────── */
.section{ padding-block:var(--sec-y); position:relative; scroll-margin-top:5.5rem; }
#top{ scroll-margin-top:0; }

.shead{ max-width:62ch; margin-bottom:clamp(2.6rem,5vw,4.4rem); }
.shead__idx{
  display:block; font-size:.7rem; font-weight:500;
  letter-spacing:.24em; text-transform:uppercase; color:var(--cyan);
  margin-bottom:1.1rem;
}
.shead__title{
  margin:0; font-size:clamp(1.85rem,4.4vw,3.35rem); font-weight:700;
  line-height:1.08; letter-spacing:-.035em;
}
.shead__note{ margin:1.1rem 0 0; color:var(--muted); font-size:1rem; max-width:52ch; }

.lede{ font-size:clamp(1.08rem,1.8vw,1.32rem); line-height:1.62; letter-spacing:-.012em; }

/* ─────────────── about ─────────────── */
.about__grid{ display:grid; grid-template-columns:minmax(0,1.32fr) minmax(0,.88fr); gap:clamp(2rem,5vw,4.5rem); align-items:start; }
.about__body > p{ color:var(--paper-dim); max-width:62ch; }
.about__body > p.lede{ color:var(--paper); }
.about__body strong{ color:var(--paper); font-weight:600; }

.pillars{ list-style:none; margin:2.8rem 0 0; padding:0; display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:var(--r-md); overflow:hidden; }
.pillar{
  background:rgba(7,18,40,.7); padding:1.5rem 1.5rem 1.6rem;
  transition:background-color .3s var(--ease);
}
.pillar:hover{ background:rgba(15,35,64,.8); }
.pillar__ico{ width:26px; height:26px; fill:none; stroke:var(--cyan); stroke-width:1.5; stroke-linecap:round; stroke-linejoin:round; margin-bottom:.95rem; }
.pillar h3{ margin:0 0 .5rem; font-size:1.02rem; font-weight:600; letter-spacing:-.018em; }
.pillar p{ margin:0; font-size:.9rem; line-height:1.62; color:var(--muted); }

.about__media{ position:sticky; top:6.5rem; display:flex; flex-direction:column; gap:1.4rem; }

.frame{
  margin:0; position:relative; border-radius:var(--r-lg); overflow:hidden;
  border:1px solid var(--line-strong);
  background:var(--deep);
  box-shadow:0 30px 70px -34px rgba(0,0,0,.9);
}
.frame img{ width:100%; aspect-ratio:4/5; object-fit:cover; }
.frame::after{
  content:''; position:absolute; inset:0; pointer-events:none;
  background:linear-gradient(to top, rgba(5,11,26,.92) 0%, transparent 46%);
}
.frame figcaption{
  position:absolute; left:1.1rem; bottom:.95rem; z-index:1;
  font-size:.66rem; letter-spacing:.16em; text-transform:uppercase; color:var(--paper-dim);
}
.frame--product{
  background:
    radial-gradient(360px 300px at 50% 42%, rgba(56,225,255,.14), transparent 68%),
    linear-gradient(155deg, #12294D 0%, #0A1730 68%);
}
.frame--product img{
  aspect-ratio:4/5; object-fit:contain; padding:2.4rem 2.2rem 3rem;
  filter:drop-shadow(0 26px 34px rgba(0,0,0,.55));
  position:relative; z-index:1;
}
/* landscape product shot — the portrait 4/5 crop would letterbox it */
.frame--wide img{ aspect-ratio:3/2; padding:1.6rem 1.4rem 2.2rem; }
.frame--wide::before{ bottom:16%; }

/* the product plate sits on a reflective bench line */
.frame--product::before{
  content:''; position:absolute; left:16%; right:16%; bottom:22%; height:1px; z-index:0;
  background:linear-gradient(90deg, transparent, rgba(56,225,255,.45), transparent);
}

.quotecard{
  border:1px solid var(--line); border-left:2px solid var(--cyan);
  border-radius:var(--r-sm); padding:1.35rem 1.4rem;
  background:rgba(7,18,40,.6);
}
.quotecard p{
  margin:0 0 .75rem;
  font-family:var(--f-disp); font-size:1.12rem; font-style:italic; line-height:1.5; color:var(--paper);
}
.quotecard span{ font-size:.66rem; letter-spacing:.14em; text-transform:uppercase; color:var(--muted); }

/* ─────────────── range grid ─────────────── */
.range{
  list-style:none; margin:0 0 clamp(1rem,3vw,2rem); padding:0;
  display:grid; grid-template-columns:repeat(auto-fit, minmax(255px, 1fr));
  gap:1px; background:var(--line);
  border:1px solid var(--line); border-radius:var(--r-md); overflow:hidden;
}
.rcard{
  position:relative; display:flex; flex-direction:column;
  background:rgba(7,18,40,.72); padding:1.6rem 1.5rem 1.4rem;
  transition:background-color .3s var(--ease);
}
.rcard::before{
  content:''; position:absolute; inset:0 0 auto 0; height:2px;
  background:linear-gradient(90deg, var(--cyan), var(--magenta));
  transform:scaleX(0); transform-origin:left;
  transition:transform .45s var(--ease);
}
.rcard:hover{ background:rgba(15,35,64,.85); }
.rcard:hover::before{ transform:scaleX(1); }
.rcard__cat{
  font-size:.62rem; font-weight:500; letter-spacing:.2em;
  text-transform:uppercase; color:var(--cyan);
}
.rcard__name{
  margin:.85rem 0 .6rem; font-size:1.3rem; font-weight:700;
  letter-spacing:-.03em; line-height:1.1;
}
.rcard__name .numeral{ font-family:var(--f-disp); font-weight:400; letter-spacing:0; color:var(--cyan); }
.rcard p{ margin:0 0 1.2rem; font-size:.9rem; line-height:1.62; color:var(--muted); }
.rcard__link{
  margin-top:auto; align-self:flex-start;
  display:inline-flex; align-items:center; gap:.45rem; min-height:44px;
  font-size:.82rem; font-weight:600; letter-spacing:-.01em;
  color:var(--paper-dim); text-decoration:none;
  transition:color .25s var(--ease), gap .25s var(--ease);
}
.rcard__link .ico{ width:14px; height:14px; }
.rcard:hover .rcard__link{ color:var(--cyan); gap:.7rem; }

/* ─────────────── instruments ─────────────── */
.product{
  display:grid; grid-template-columns:minmax(0,.86fr) minmax(0,1.14fr);
  gap:clamp(2rem,5vw,4.5rem); align-items:start;
  padding-block:clamp(2.5rem,5vw,4rem);
  border-top:1px solid var(--line);
  scroll-margin-top:6rem;
}
.product--flip .product__media{ order:2; }

.product__media{ position:sticky; top:6.5rem; display:flex; flex-direction:column; gap:1.2rem; }
.product__viz{
  border:1px solid var(--line-strong); border-radius:var(--r-lg);
  background:
    radial-gradient(420px 240px at 50% 50%, rgba(56,225,255,.1), transparent 70%),
    linear-gradient(150deg, #0C1E3C, #071228);
  padding:1.6rem 1rem;
  box-shadow:0 30px 70px -36px rgba(0,0,0,.9);
}
.quadviz{ width:100%; height:auto; display:block; }
.quadviz__rods rect{ fill:rgba(168,190,220,.16); stroke:var(--line-strong); stroke-width:1; }
.quadviz__cell{ fill:rgba(123,140,255,.2); stroke:rgba(123,140,255,.55); }
.quadviz__lbl{ font-family:var(--f-mono); font-size:8px; letter-spacing:.16em; fill:var(--muted); }
.quadviz__axis{ stroke:rgba(140,180,230,.2); stroke-width:1; }
.quadviz__ion{ animation:fly 3.4s var(--ease) infinite; }
@keyframes fly{
  0%   { transform:translateX(0);    opacity:0; }
  12%  { opacity:1; }
  88%  { opacity:1; }
  100% { transform:translateX(280px); opacity:0; }
}
/* the MRM trace draws itself in as the section arrives */
.quadviz__trace{ stroke-dasharray:340; stroke-dashoffset:340; animation:trace 3.2s var(--ease) .3s forwards; }
@keyframes trace{ to{ stroke-dashoffset:0; } }

.tag{
  display:inline-block; font-size:.66rem; font-weight:500;
  letter-spacing:.2em; text-transform:uppercase; color:var(--cyan);
  padding:.4rem .8rem; margin-bottom:1.1rem;
  border:1px solid rgba(56,225,255,.32); border-radius:999px;
  background:rgba(56,225,255,.07);
}
.product__name{
  margin:0 0 1rem; font-size:clamp(2.1rem,5vw,3.4rem); font-weight:700;
  letter-spacing:-.045em; line-height:1;
}
.product__name .numeral{ font-family:var(--f-disp); font-weight:400; letter-spacing:0; color:var(--cyan); }
.product__lede{ margin:0 0 2rem; max-width:56ch; color:var(--paper-dim); font-size:1.06rem; line-height:1.68; }
.product__lede em{ font-family:var(--f-disp); font-style:italic; color:var(--paper); font-size:1.08em; }

.features{ list-style:none; margin:0 0 2rem; padding:0; display:grid; gap:0; }
.features li{
  padding:1.15rem 0 1.15rem 1.5rem;
  border-top:1px solid var(--line);
  position:relative;
  transition:padding-left .3s var(--ease);
}
.features li:last-child{ border-bottom:1px solid var(--line); }
.features li::before{
  content:''; position:absolute; left:0; top:1.55rem;
  width:6px; height:6px; border-radius:50%;
  background:var(--cyan); opacity:.55;
  transition:opacity .3s var(--ease), box-shadow .3s var(--ease);
}
.features li:hover{ padding-left:1.9rem; }
.features li:hover::before{ opacity:1; box-shadow:0 0 12px 2px rgba(56,225,255,.5); }
.features h4{ margin:0 0 .35rem; font-size:1rem; font-weight:600; letter-spacing:-.015em; }
.features p{ margin:0; font-size:.92rem; line-height:1.66; color:var(--muted); max-width:60ch; }

.chips{ list-style:none; margin:0; padding:0; display:flex; flex-wrap:wrap; gap:.5rem; }
.chips li{
  font-family:var(--f-mono); font-size:.74rem; font-variant-numeric:tabular-nums;
  color:var(--paper-dim);
  padding:.5rem .85rem;
  border:1px solid var(--line); border-radius:var(--r-sm);
  background:rgba(7,18,40,.55);
  transition:border-color .25s var(--ease), color .25s var(--ease);
}
.chips li:hover{ border-color:var(--line-strong); color:var(--paper); }
.chips b{ color:var(--cyan); font-weight:600; }

/* ─────────────── specifications ─────────────── */
.tabs__list{
  display:flex; gap:.4rem; flex-wrap:wrap;
  padding:.4rem; margin-bottom:2.2rem;
  border:1px solid var(--line); border-radius:999px;
  background:rgba(7,18,40,.6);
  width:max-content; max-width:100%;
}
.tab{
  font-family:var(--f-ui); font-size:.9rem; font-weight:600; letter-spacing:-.01em;
  color:var(--paper-dim); background:none; border:0; cursor:pointer;
  padding:.7rem 1.3rem; min-height:44px; border-radius:999px;
  transition:background-color .25s var(--ease), color .25s var(--ease);
}
.tab:hover{ color:var(--paper); }
.tab.is-active{
  color:#02101E;
  background:linear-gradient(115deg, var(--cyan), var(--indigo) 140%);
}

.tabs__panel[hidden]{ display:none; }
.tabs__panel{ animation:fadeUp .45s var(--ease) both; }
@keyframes fadeUp{ from{ opacity:0; transform:translateY(10px); } }

.spectable{ display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:var(--r-md); overflow:hidden; }
.spectable__group{ background:rgba(7,18,40,.72); padding:1.6rem 1.6rem 1.2rem; }
.spectable__group h4{
  margin:0 0 1rem; font-size:.68rem; font-weight:500;
  letter-spacing:.22em; text-transform:uppercase; color:var(--cyan);
}
.spectable dl{ margin:0; }
.spectable dl > div{
  display:grid; grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr); gap:1rem;
  padding:.7rem 0; border-top:1px solid var(--line);
}
.spectable dl > div:first-child{ border-top:0; padding-top:0; }
.spectable dt{ font-size:.86rem; color:var(--muted); line-height:1.5; }
.spectable dd{
  margin:0; font-family:var(--f-mono); font-size:.82rem; font-variant-numeric:tabular-nums;
  color:var(--paper); line-height:1.55;
}
.spectable dd i{ font-style:italic; font-family:var(--f-disp); font-size:1.1em; }
.spectable .sub{ display:block; color:var(--muted); font-size:.92em; margin-top:.2rem; }

/* ─────────────── services ─────────────── */
.svcgrid{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(280px, 1fr));
  gap:1px; background:var(--line);
  border:1px solid var(--line); border-radius:var(--r-md); overflow:hidden;
}
.svc{
  position:relative; background:rgba(7,18,40,.72);
  padding:1.8rem 1.7rem 1.9rem;
  transition:background-color .3s var(--ease);
}
.svc::before{
  content:''; position:absolute; inset:0 0 auto 0; height:2px;
  background:linear-gradient(90deg, var(--cyan), var(--magenta));
  transform:scaleX(0); transform-origin:left;
  transition:transform .45s var(--ease);
}
.svc:hover{ background:rgba(15,35,64,.85); }
.svc:hover::before{ transform:scaleX(1); }

.svc__title{
  margin:0 0 .5rem; font-size:1.22rem; font-weight:600;
  letter-spacing:-.025em; line-height:1.15;
}
.svc__note{
  margin:0 0 1.4rem; padding-bottom:1.3rem;
  font-size:.88rem; line-height:1.6; color:var(--muted);
  border-bottom:1px solid var(--line);
}
.svc__list{ list-style:none; margin:0; padding:0; display:grid; gap:.78rem; }
.svc__list li{
  position:relative; padding-left:1.5rem;
  font-size:.94rem; line-height:1.5; color:var(--paper-dim);
}
/* CSS-drawn tick — no icon font, scales with the text */
.svc__list li::before{
  content:''; position:absolute; left:2px; top:.34em;
  width:5px; height:9px;
  border:solid var(--cyan); border-width:0 1.6px 1.6px 0;
  transform:rotate(42deg);
}

.svcfoot{
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between;
  gap:1.2rem 2rem; margin:1.6rem 0 0;
}
.svcfoot span{ color:var(--muted); font-size:.92rem; max-width:56ch; }

/* ─────────────── brochure card ─────────────── */
.dlcard{
  position:relative; isolation:isolate; overflow:hidden;
  display:grid; grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);
  gap:clamp(2rem,5vw,4rem); align-items:center;
  padding:clamp(2rem,5vw,3.6rem);
  border:1px solid var(--line-strong); border-radius:var(--r-lg);
  background:linear-gradient(140deg, rgba(17,40,74,.92), rgba(7,18,40,.92));
  box-shadow:0 40px 90px -46px rgba(0,0,0,.95);
}
.dlcard__glow{
  position:absolute; inset:-40% -10% auto auto; width:640px; height:640px; z-index:-1;
  background:radial-gradient(circle, rgba(56,225,255,.16), transparent 64%);
}
.dlcard__body{ min-width:0; }
.dlcard__title{ margin:0 0 1rem; font-size:clamp(1.7rem,3.6vw,2.6rem); font-weight:700; letter-spacing:-.035em; line-height:1.1; }
.dlcard__body > p{ margin:0 0 1.6rem; color:var(--paper-dim); max-width:54ch; }
.dlcard__meta{ list-style:none; margin:0 0 1.9rem; padding:0; display:flex; flex-wrap:wrap; gap:1.4rem; }
.dlcard__meta li{ display:flex; align-items:center; gap:.5rem; font-size:.74rem; letter-spacing:.1em; text-transform:uppercase; color:var(--muted); }
.dlcard__meta .ico{ width:15px; height:15px; stroke:var(--cyan); }
.dlcard__actions{ display:flex; flex-wrap:wrap; gap:.85rem; }

/* stacked PDF illustration */
.dlcard__doc{ display:flex; justify-content:center; perspective:1200px; }
.doc{ position:relative; width:min(240px,72%); aspect-ratio:1/1.3; }
.doc__page{
  position:absolute; inset:0; border-radius:6px;
  border:1px solid var(--line-strong);
  transition:transform .5s var(--ease);
}
.doc__page--3{ background:#0A1730; transform:rotate(-9deg) translate(-14px,10px); opacity:.4; }
.doc__page--2{ background:#0D1F3C; transform:rotate(-4.5deg) translate(-7px,5px); opacity:.65; }
.doc__page--1{
  background:linear-gradient(165deg, #0F2A52 0%, #071228 62%, #0A1932 100%);
  display:flex; flex-direction:column; justify-content:flex-end;
  padding:1.2rem 1.1rem 0; overflow:hidden;
  box-shadow:0 24px 50px -22px rgba(0,0,0,.9);
}
.dlcard:hover .doc__page--3{ transform:rotate(-13deg) translate(-22px,14px); }
.dlcard:hover .doc__page--2{ transform:rotate(-7deg) translate(-12px,8px); }
.dlcard:hover .doc__page--1{ transform:translateY(-6px); }
.doc__kicker{ font-size:.5rem; letter-spacing:.28em; text-transform:uppercase; color:var(--cyan); margin-bottom:.7rem; }
.doc__title{ font-size:1.02rem; font-weight:700; letter-spacing:-.03em; line-height:1.12; color:var(--paper); margin-bottom:.9rem; }
.doc__peaks{ width:100%; height:44px; display:block; opacity:.9; }

/* ─────────────── contact ─────────────── */
.contact__grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:1rem; }
.ccard{
  position:relative; display:flex; flex-direction:column; gap:.45rem;
  padding:1.7rem 1.6rem 1.8rem;
  border:1px solid var(--line); border-radius:var(--r-md);
  background:rgba(7,18,40,.65);
  text-decoration:none; color:var(--paper);
  overflow:hidden;
  transition:border-color .28s var(--ease), transform .28s var(--ease), background-color .28s var(--ease);
}
.ccard::before{
  content:''; position:absolute; inset:auto 0 0 0; height:1px;
  background:linear-gradient(90deg, var(--cyan), var(--magenta));
  transform:scaleX(0); transform-origin:left;
  transition:transform .4s var(--ease);
}
.ccard:hover{ border-color:var(--line-strong); transform:translateY(-4px); background:rgba(15,35,64,.75); }
.ccard:hover::before{ transform:scaleX(1); }
.ccard__ico{ width:24px; height:24px; fill:none; stroke:var(--cyan); stroke-width:1.5; stroke-linecap:round; stroke-linejoin:round; margin-bottom:.7rem; }
.ccard__k{ font-size:.66rem; letter-spacing:.18em; text-transform:uppercase; color:var(--muted); }
.ccard__v{ font-size:1.02rem; font-weight:600; letter-spacing:-.018em; word-break:break-word; }
.ccard__arrow{ position:absolute; top:1.5rem; right:1.5rem; color:var(--muted); transition:color .28s var(--ease), transform .28s var(--ease); }
.ccard:hover .ccard__arrow{ color:var(--cyan); transform:translate(3px,-3px); }

/* ─────────────── footer ─────────────── */
.foot{ border-top:1px solid var(--line); padding-block:clamp(2.8rem,6vw,4rem) 2rem; background:rgba(4,9,26,.6); }
.foot__inner{ display:flex; flex-wrap:wrap; gap:2rem; justify-content:space-between; align-items:flex-start; }
.foot__tag{ margin:1rem 0 0; color:var(--muted); font-size:.92rem; }
.foot__nav{ display:flex; flex-wrap:wrap; gap:0 1.2rem; margin:-.6rem 0 0 -.4rem; }
.foot__nav a{
  display:inline-flex; align-items:center; min-height:44px; padding-inline:.4rem;
  color:var(--paper-dim); text-decoration:none; font-size:.92rem;
  transition:color .2s var(--ease);
}
.foot__nav a:hover{ color:var(--cyan); }
.foot__legal{
  display:flex; flex-wrap:wrap; gap:.6rem 2rem; justify-content:space-between;
  margin-top:clamp(2.2rem,5vw,3.2rem); padding-top:1.5rem;
  border-top:1px solid var(--line);
  font-size:.68rem; color:var(--muted); letter-spacing:.04em;
}

/* ─────────────── reveal on scroll ─────────────── */
.reveal{ opacity:0; transform:translateY(22px); transition:opacity .8s var(--ease) var(--d,0s), transform .8s var(--ease) var(--d,0s); }
.reveal.is-in{ opacity:1; transform:none; }

/* ─────────────── responsive ─────────────── */
@media (max-width:1080px){
  .nav__links{ gap:0; }
  .nav__links a{ padding-inline:.6rem; font-size:.86rem; }
}

@media (max-width:900px){
  /* absolute, not fixed — `top:100%` must resolve against .nav, not the viewport */
  .nav__links{
    position:absolute; left:0; right:0; top:100%;
    flex-direction:column; align-items:stretch; gap:0;
    max-height:calc(100svh - 100%); overflow-y:auto;
    padding:1rem var(--gut) 1.6rem;
    background:rgba(5,11,26,.97); backdrop-filter:blur(20px);
    border-bottom:1px solid var(--line);
    transform:translateY(-8px); opacity:0; pointer-events:none;
    transition:opacity .25s var(--ease), transform .25s var(--ease);
  }
  .nav__links.is-open{ opacity:1; transform:none; pointer-events:auto; }
  .nav__links a{ padding:.95rem .4rem; border-bottom:1px solid var(--line); font-size:1rem; border-radius:0; }
  .nav__burger{ display:flex; }
  .nav__cta{ display:none; }

  .about__grid,
  .product{ grid-template-columns:1fr; }
  .product--flip .product__media{ order:0; }
  .about__media, .product__media{ position:static; }
  .about__media{ order:-1; }
  .frame img{ aspect-ratio:16/10; }
  .frame--product img{ aspect-ratio:4/3; }

  .spectable{ grid-template-columns:1fr; }
  .dlcard{ grid-template-columns:1fr; }
  .dlcard__doc{ order:-1; }
  .contact__grid{ grid-template-columns:1fr; }
}

@media (max-width:560px){
  body{ font-size:16px; }
  .hero{ min-height:auto; padding-block:8.5rem 4.5rem; }
  .hero__scroll{ display:none; }
  .pillars{ grid-template-columns:1fr; }
  .tabs__list{ width:100%; border-radius:var(--r-md); }
  .tab{ flex:1 1 auto; text-align:center; }
  .spectable dl > div{ grid-template-columns:1fr; gap:.25rem; }
  .btn{ width:100%; justify-content:center; }
  .hero__actions .btn, .dlcard__actions .btn{ width:100%; }
  .foot__legal{ flex-direction:column; }
}

/* ─────────────── motion preferences ─────────────── */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{ opacity:1; transform:none; }
  .ticker__track{ animation:none; }
}