/* ==============================================================
   Infinitycore Technologies Pvt Ltd
   ---------------------------------------------------------------
   Palette: derived from the logo (#06402B forest, #3DB34A grass).
   The light steps are hue-matched to the logo's green rather than
   the mint scale, so the mark never looks like a foreign object.

   Type:  Space Grotesk  — display
          Instrument Sans — body
          JetBrains Mono  — labels, indices, data

   Signature: the trace rail (.rail) — a routed PCB track down the
   left gutter that fills as you scroll and doubles as section
   navigation. Everything else is kept quiet on purpose.
   ============================================================== */

/* ---------- Tokens -------------------------------------------- */
:root {
  /* Brand */
  --forest:       #06402B;
  --forest-2:     #0B5638;
  --green:        #3DB34A;
  --green-press:  #2F9B3C;
  --green-text:   #1F7C2E;

  /* Greens, hue-matched to the logo */
  --g1:  #F7FDF8;
  --g2:  #EEFBF0;
  --g3:  #DDF6E1;
  --g4:  #C7EFCD;
  --g6:  #8FD89B;

  /* Neutrals */
  --paper:      #FFFFFF;
  --wash:       #F5FBF6;
  --ink:        #202020;
  --muted:      #5E6C62;
  --muted-dark: #A8C6B2;

  /* Lines */
  --line:        #DCE9DE;
  --line-strong: #B9D6C0;
  --line-dark:   rgba(255, 255, 255, .16);

  /* Type */
  --display: "Space Grotesk", "Segoe UI", sans-serif;
  --body:    "Instrument Sans", "Segoe UI", sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  /* Metrics */
  --shell:   1180px;
  --gutter:  clamp(1.15rem, 4vw, 2.5rem);
  --block:   clamp(3.75rem, 8vw, 7rem);
  --r:       3px;
  --ease:    cubic-bezier(.22, .61, .36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: clamp(1rem, .97rem + .18vw, 1.06rem);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 600;
  color: var(--forest);
  line-height: 1.1;
  letter-spacing: -.02em;
  margin: 0 0 .6rem;
}

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

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

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip {
  position: absolute;
  left: 50%;
  top: -100px;
  transform: translateX(-50%);
  z-index: 200;
  padding: .7rem 1.2rem;
  background: var(--forest);
  color: #fff;
  font-family: var(--mono);
  font-size: .8rem;
  text-decoration: none;
  transition: top .2s var(--ease);
}
.skip:focus { top: .6rem; }

/* ---------- Layout -------------------------------------------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--block); }

.section--wash {
  background: var(--wash);
  border-block: 1px solid var(--line);
}

.section--dark {
  background: var(--forest);
  color: #EAF4EC;
}
.section--dark h2,
.section--dark h3 { color: #fff; }

/* ---------- Shared type --------------------------------------- */
.micro {
  font-family: var(--mono);
  font-size: .68rem;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--green-text);
  margin: 0 0 .5rem;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  margin: 0 0 1.1rem;
  padding: .28rem .8rem .28rem .6rem;
  border: 1px solid var(--line-strong);
  border-left: 2px solid var(--green);
  background: var(--g1);
  color: var(--forest);
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.eyebrow__dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green);
}
.section--dark .eyebrow {
  background: rgba(255, 255, 255, .05);
  border-color: var(--line-dark);
  border-left-color: var(--green);
  color: #EAF4EC;
}

.lede {
  font-size: clamp(1.08rem, 1rem + .5vw, 1.3rem);
  line-height: 1.55;
  color: var(--forest);
}

.head { max-width: 46rem; margin-bottom: clamp(2.25rem, 5vw, 3.5rem); }
.head__title { font-size: clamp(1.85rem, 1.35rem + 2.2vw, 3rem); }
.head__note { color: var(--muted); margin-top: 1rem; max-width: 44rem; }
.head--invert .head__note { color: var(--muted-dark); }

/* ---------- Buttons ------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .9rem 1.5rem;
  border: 1px solid transparent;
  border-radius: var(--r);
  font-family: var(--mono);
  font-size: .76rem;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease);
}
.btn--sm { padding: .6rem 1.05rem; font-size: .72rem; }

.btn--solid {
  background: var(--forest);
  border-color: var(--forest);
  color: #fff;
}
.btn--solid:hover { background: var(--green-press); border-color: var(--green-press); }

.btn--line {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--forest);
}
.btn--line:hover { border-color: var(--forest); background: var(--g2); }

.section--dark .btn--line { border-color: var(--line-dark); color: #fff; }
.section--dark .btn--line:hover { background: rgba(255, 255, 255, .08); border-color: #fff; }

.btn:active { transform: translateY(1px); }

/* ---------- Masthead ------------------------------------------ */
.masthead {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, .9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.masthead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 74px;
}

.brand { display: inline-flex; align-items: center; }
.brand img { width: 232px; height: auto; }

.nav { display: flex; align-items: center; gap: 1.75rem; }
.nav__list { display: flex; align-items: center; gap: 1.6rem; }
.nav__list a {
  font-family: var(--mono);
  font-size: .76rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--forest);
  padding-block: .35rem;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}
.nav__list a:hover { border-bottom-color: var(--green); }
.nav__list a.is-active { color: var(--green-text); border-bottom-color: var(--green); }

/* Burger */
.burger {
  display: none;
  width: 44px; height: 44px;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: var(--r);
  cursor: pointer;
}
.burger__box { position: relative; width: 18px; height: 12px; display: block; }
.burger__bar,
.burger__bar::before,
.burger__bar::after {
  position: absolute;
  left: 0;
  width: 18px; height: 2px;
  background: var(--forest);
  transition: transform .22s var(--ease), opacity .18s var(--ease);
}
.burger__bar { top: 5px; }
.burger__bar::before { content: ""; top: -5px; }
.burger__bar::after  { content: ""; top: 5px; }

.is-open .burger__bar { background: transparent; }
.is-open .burger__bar::before { transform: translateY(5px) rotate(45deg); }
.is-open .burger__bar::after  { transform: translateY(-5px) rotate(-45deg); }

/* ---------- Trace rail (signature) ---------------------------- */
.rail {
  position: fixed;
  left: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 60;
  width: 24px;
  height: min(62vh, 520px);
}
.rail__svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.rail__track {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
}
.rail__fill {
  fill: none;
  stroke: var(--green);
  stroke-width: 1.5;
  vector-effect: non-scaling-stroke;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset .12s linear;
}

.rail__list { position: absolute; inset: 0; }
.rail__list li { position: absolute; top: var(--y); left: 0; transform: translateY(-50%); }
.rail__list a {
  display: flex;
  align-items: center;
  gap: .6rem;
  text-decoration: none;
  padding: 4px;
}
.rail__via {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--paper);
  border: 1.5px solid var(--line-strong);
  flex: none;
  transition: border-color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease);
}
.rail__label {
  font-family: var(--mono);
  font-size: .64rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--forest);
  white-space: nowrap;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity .2s var(--ease), transform .2s var(--ease);
}
.rail__list a:hover .rail__label,
.rail__list a:focus-visible .rail__label { opacity: 1; transform: none; }
.rail__list a:hover .rail__via { border-color: var(--green); }
.rail__list a.is-active .rail__via {
  background: var(--green);
  border-color: var(--green);
  transform: scale(1.15);
}
.rail__list a.is-active .rail__label { opacity: 1; transform: none; color: var(--green-text); }

@media (max-width: 1279px) { .rail { display: none; } }

/* ---------- Hero ---------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 60% at 82% 30%, var(--g2), transparent 70%),
    var(--paper);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--g3) 1px, transparent 1px),
    linear-gradient(90deg, var(--g3) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 75% at 60% 40%, #000 25%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 80% 75% at 60% 40%, #000 25%, transparent 80%);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  padding-block: clamp(3.25rem, 8vw, 6rem);
}
.hero__title {
  font-size: clamp(2.25rem, 1.35rem + 4.2vw, 4.15rem);
  font-weight: 700;
  letter-spacing: -.035em;
  margin-bottom: 1.35rem;
}
.hero__lede {
  font-size: clamp(1.02rem, .98rem + .45vw, 1.22rem);
  color: var(--muted);
  max-width: 40ch;
  margin-bottom: 2rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-bottom: 2.75rem; }

.capabilities {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
}
.capabilities > div { background: var(--paper); padding: .85rem 1rem; }
.capabilities dt {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--green-text);
  margin-bottom: .2rem;
}
.capabilities dd {
  margin: 0;
  font-family: var(--display);
  font-size: .96rem;
  font-weight: 500;
  color: var(--forest);
  line-height: 1.3;
}

/* Hero board graphic */
.hero__board { display: flex; align-items: center; justify-content: center; }
.board { width: 100%; max-width: 520px; height: auto; }
.board__lead,
.board__ring {
  fill: none;
  stroke: var(--green);
  stroke-width: 1.25;
}
.board__ring--1 { stroke: var(--forest); stroke-width: 2; }
.board__ring--2 { stroke: var(--green); opacity: .85; }
.board__ring--3 { stroke: var(--g6); }
.board__vias circle { fill: var(--paper); stroke: var(--forest); stroke-width: 2; }
.board__pads rect { fill: var(--g2); stroke: var(--line-strong); stroke-width: 1; }
.board__labels text {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
  fill: var(--forest);
  text-anchor: middle;
}

/* One orchestrated draw on load, then it stays still. */
.board__lead, .board__ring {
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: route 2s var(--ease) forwards;
}
.board__ring--1 { animation-delay: .15s; }
.board__ring--2 { animation-delay: .35s; }
.board__ring--3 { animation-delay: .55s; }
.board__lead    { animation-delay: .8s; }
.board__vias, .board__pads, .board__labels {
  opacity: 0;
  animation: settle .6s var(--ease) 1.5s forwards;
}
@keyframes route  { to { stroke-dashoffset: 0; } }
@keyframes settle { to { opacity: 1; } }

@media (min-width: 900px) {
  .hero__inner { grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); align-items: center; }
}
@media (max-width: 899px) {
  .hero__board { order: -1; max-width: 420px; margin-inline: auto; }
}

/* ---------- About --------------------------------------------- */
.about { display: grid; gap: clamp(1.75rem, 4vw, 3rem); }
@media (min-width: 900px) {
  .about { grid-template-columns: minmax(0, 1.4fr) minmax(0, .6fr); }
}
.about__body p + p { margin-top: 1rem; }
.about__aside {
  border: 1px solid var(--line);
  background: var(--g1);
  padding: 1.5rem;
}
.chain { counter-reset: chain; }
.chain li {
  counter-increment: chain;
  position: relative;
  padding: .55rem 0 .55rem 2.2rem;
  font-family: var(--display);
  font-weight: 500;
  color: var(--forest);
  border-bottom: 1px dashed var(--line-strong);
}
.chain li:last-child { border-bottom: 0; }
.chain li::before {
  content: counter(chain, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .72rem;
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--green);
}

.pillars {
  display: grid;
  gap: 1px;
  margin-top: clamp(2rem, 5vw, 3.25rem);
  background: var(--line);
  border: 1px solid var(--line);
}
@media (min-width: 760px) { .pillars { grid-template-columns: repeat(3, 1fr); } }
.pillar { background: var(--paper); padding: 1.6rem; }
.pillar h3 { font-size: 1.05rem; }
.pillar p { color: var(--muted); font-size: .96rem; }

/* ---------- Services ------------------------------------------ */
.service {
  display: grid;
  gap: 1.25rem;
  padding-block: clamp(2rem, 4vw, 2.75rem);
  border-top: 1px solid var(--line-strong);
}
.service:last-of-type { border-bottom: 1px solid var(--line-strong); }
@media (min-width: 860px) {
  .service { grid-template-columns: 180px minmax(0, 1fr); gap: 2.5rem; }
  .service__index { position: sticky; top: 110px; align-self: start; }
}
.service__index .micro { color: var(--muted); margin: 0; }
.service__title { font-size: clamp(1.4rem, 1.1rem + 1.1vw, 2rem); }

.service__flow {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem .5rem;
  margin-bottom: 1rem;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--green-text);
}
.service__flow span { display: inline-flex; align-items: center; }
.service__flow span:not(:last-child)::after {
  content: "→";
  margin-inline: .5rem;
  color: var(--line-strong);
}

.service__text { color: var(--muted); max-width: 54ch; }

.ticks {
  display: grid;
  gap: .45rem 1.5rem;
  margin: 1.35rem 0;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}
.ticks li {
  position: relative;
  padding-left: 1.4rem;
  font-size: .95rem;
  color: var(--forest);
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0; top: .62em;
  width: 7px; height: 7px;
  border: 1.5px solid var(--green);
  border-radius: 1px;
  transform: rotate(45deg);
}

.service__stack {
  padding: .85rem 1rem;
  border-left: 2px solid var(--green);
  background: var(--g2);
  font-size: .92rem;
  color: var(--muted);
}
.service__stack .micro {
  display: inline;
  margin-right: .5rem;
}

.tracks { display: grid; gap: 1px; margin: 1.35rem 0; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 640px) { .tracks { grid-template-columns: 1fr 1fr; } }
.track { background: var(--paper); padding: 1.25rem; }
.track p { color: var(--muted); font-size: .95rem; }
.ticks--tight {
  grid-template-columns: 1fr;
  gap: .35rem;
  margin: .35rem 0 0;
}
.ticks--tight li { font-size: .92rem; }

/* ---------- Why ----------------------------------------------- */
.grid-5 { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (min-width: 700px)  { .grid-5 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1020px) { .grid-5 { grid-template-columns: repeat(3, 1fr); } }
.cell {
  background: var(--paper);
  padding: 1.7rem 1.5rem;
  transition: background .2s var(--ease);
}
.cell:hover { background: var(--g1); }
.cell h3 { font-size: 1.05rem; }
.cell p { color: var(--muted); font-size: .95rem; }

/* ---------- Process ------------------------------------------- */
.process { display: grid; gap: 1px; background: var(--line-dark); border: 1px solid var(--line-dark); }
@media (min-width: 620px)  { .process { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 940px)  { .process { grid-template-columns: repeat(3, 1fr); } }
.step {
  position: relative;
  background: var(--forest);
  padding: 1.65rem 1.5rem 1.85rem;
}
.step__no {
  display: block;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .18em;
  color: var(--green);
  margin-bottom: .85rem;
}
.step h3 { font-size: 1.1rem; margin-bottom: .35rem; }
.step p { color: var(--muted-dark); font-size: .93rem; }
.step::after {
  content: "";
  position: absolute;
  left: 1.5rem;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--green);
  transition: width .5s var(--ease);
}
.step.is-in::after { width: 34px; }

/* ---------- Contact ------------------------------------------- */
.contact { display: grid; gap: clamp(2rem, 5vw, 3.5rem); }
@media (min-width: 940px) {
  .contact { grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); }
}

.details { margin: 0 0 1.5rem; }
.details > div {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 1rem;
  padding: .8rem 0;
  border-bottom: 1px solid var(--line);
}
.details dt {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: .18rem;
}
.details dd { margin: 0; color: var(--forest); }
.details a { text-decoration: none; border-bottom: 1px solid var(--line-strong); }
.details a:hover { border-bottom-color: var(--green); color: var(--green-text); }

/* ---------- Form ---------------------------------------------- */
.form {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: clamp(1.25rem, 3vw, 2rem);
}
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.field { margin-bottom: 1.1rem; }
.field-row { display: grid; gap: 0 1rem; }
@media (min-width: 620px) { .field-row { grid-template-columns: 1fr 1fr; } }

.field label {
  display: block;
  margin-bottom: .38rem;
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--forest);
}
.req { color: var(--green-text); }

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: .8rem .9rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--r);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1rem;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}
.field textarea { resize: vertical; min-height: 130px; }
.field select { appearance: none; background-image: none; cursor: pointer; }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--g3);
}

.field__error {
  margin: .35rem 0 0;
  min-height: 1rem;
  font-family: var(--mono);
  font-size: .7rem;
  color: #B3261E;
}
.field.is-invalid input,
.field.is-invalid select,
.field.is-invalid textarea { border-color: #B3261E; }

.form__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: .5rem;
}
.form__note { margin: 0; font-size: .85rem; color: var(--muted); }

.form__status {
  margin: 1rem 0 0;
  padding: 0;
  font-size: .95rem;
}
.form__status.is-ok,
.form__status.is-error { padding: .85rem 1rem; border-left: 2px solid; }
.form__status.is-ok { background: var(--g2); border-color: var(--green); color: var(--forest); }
.form__status.is-error { background: #FDF1F0; border-color: #B3261E; color: #7A1912; }

.btn[aria-busy="true"] { opacity: .6; pointer-events: none; }

/* ---------- Footer -------------------------------------------- */
.footer {
  background: var(--forest);
  color: #D6E8DA;
  padding-top: clamp(2.75rem, 6vw, 4rem);
}
.footer__inner {
  display: grid;
  gap: 2rem;
  padding-bottom: 2.5rem;
}
@media (min-width: 760px)  { .footer__inner { grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2.5rem; } }
.footer__brand img {
  width: 210px;
  margin-bottom: 1rem;
  background: #fff;
  padding: .5rem .6rem;
  border-radius: var(--r);
}
.footer__brand p { color: var(--muted-dark); font-size: .93rem; max-width: 34ch; }

.footer .micro { color: var(--green); }
.footer__col ul li { padding: .3rem 0; }
.footer__col a, .social a {
  color: #D6E8DA;
  text-decoration: none;
  font-size: .93rem;
  border-bottom: 1px solid transparent;
}
.footer__col a:hover, .social a:hover { border-bottom-color: var(--green); color: #fff; }

.social { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.1rem; }
.social a { font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; }

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
  justify-content: space-between;
  padding-block: 1.25rem;
  border-top: 1px solid var(--line-dark);
}
.footer__legal p { margin: 0; font-family: var(--mono); font-size: .7rem; letter-spacing: .06em; color: var(--muted-dark); }

/* ---------- Reveal on scroll ---------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- Mobile navigation --------------------------------- */
@media (max-width: 979px) {
  .brand img { width: 190px; }
  .burger { display: inline-flex; }

  .nav {
    position: fixed;
    inset: 74px 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: .5rem var(--gutter) 1.5rem;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s var(--ease), transform .2s var(--ease), visibility .2s;
  }
  .nav.is-open { opacity: 1; visibility: visible; transform: none; }

  .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav__list a {
    display: block;
    padding: .95rem 0;
    font-size: .85rem;
    border-bottom: 1px solid var(--line);
  }
  .nav__list a:hover { border-bottom-color: var(--line); }
  .nav__cta { margin-top: 1.1rem; }
}

@media (max-width: 420px) {
  .brand img { width: 158px; }
  .btn { width: 100%; }
  .hero__actions .btn { width: auto; flex: 1 1 auto; }
}

/* ---------- Reduced motion ------------------------------------ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .board__lead, .board__ring { stroke-dashoffset: 0; }
  .board__vias, .board__pads, .board__labels { opacity: 1; }
  .step::after { width: 34px; }
}

/* ---------- Print --------------------------------------------- */
@media print {
  .masthead, .rail, .hero__board, .burger { display: none !important; }
  body { color: #000; }
  .section--dark, .footer { background: #fff; color: #000; }
}