/* =========================================================
   TIERWOOHL — Landing corporativa
   Colores oficiales de marca:
     Carbón     #373736
     Celeste    #4FC2EC
     Verde/teal #6DC3BD
   Tipografías: Sora (títulos, geométrica como el logo) + Inter (texto)
   ========================================================= */

:root {
  --carbon: #373736;
  --carbon-900: #23231f;
  --carbon-700: #3f3f3d;
  --celeste: #4fc2ec;
  --celeste-dark: #2ba7d6;
  --teal: #6dc3bd;
  --ink: #1c2b33;
  --muted: #5b6b73;
  --line: #e6ecef;
  --bg: #ffffff;
  --bg-soft: #f5f9fb;
  --bg-deep: #0e2733;      /* azul profundo tipo "bajo el agua" */
  --bg-deep-2: #123647;
  --white: #ffffff;

  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 10px rgba(14, 39, 51, .06);
  --shadow-md: 0 12px 40px rgba(14, 39, 51, .10);
  --shadow-lg: 0 30px 70px rgba(14, 39, 51, .16);

  --maxw: 1180px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --font-head: 'Sora', 'Segoe UI', system-ui, sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;
}

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---------- Utilidades ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 110px 0; }
.section--soft { background: var(--bg-soft); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-head);
  font-size: .82rem; font-weight: 600; letter-spacing: .18em; text-transform: uppercase;
  color: var(--celeste-dark);
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--teal); border-radius: 2px; }
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head.center .eyebrow::before { display: none; }
h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 700; line-height: 1.12; color: var(--carbon); letter-spacing: -.02em; }
h2 { font-size: clamp(1.9rem, 4vw, 2.9rem); margin: 16px 0 18px; }
h3 { font-size: 1.28rem; }
.lead { font-size: 1.12rem; color: var(--muted); }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: var(--font-head); font-weight: 600; font-size: .98rem;
  padding: 15px 28px; border-radius: 999px; cursor: pointer; border: 1.5px solid transparent;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s, color .25s;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn--primary { background: var(--celeste); color: #04303f; box-shadow: 0 10px 26px rgba(79, 194, 236, .38); }
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(79, 194, 236, .5); }
.btn--ghost { background: transparent; color: var(--carbon); border-color: rgba(55, 55, 54, .22); }
.btn--ghost:hover { border-color: var(--carbon); transform: translateY(-3px); }
.btn--light { background: #fff; color: var(--carbon); }
.btn--light:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.btn--outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
.btn--outline-light:hover { border-color: #fff; background: rgba(255,255,255,.08); transform: translateY(-3px); }

/* ---------- Header ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .3s, box-shadow .3s, padding .3s;
  padding: 20px 0;
}
.header.scrolled {
  background: rgba(255, 255, 255, .88);
  backdrop-filter: saturate(160%) blur(14px);
  box-shadow: 0 1px 0 var(--line), 0 6px 24px rgba(14,39,51,.05);
  padding: 12px 0;
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav__logo img { height: 34px; width: auto; transition: filter .3s; }
.nav__logo .logo-dark { display: none; }
.header.scrolled .nav__logo .logo-light { display: none; }
.header.scrolled .nav__logo .logo-dark { display: block; }
.nav__menu { display: flex; align-items: center; gap: 34px; }
.nav__link {
  font-family: var(--font-head); font-weight: 500; font-size: .95rem; color: #fff;
  position: relative; padding: 4px 0; transition: color .25s;
}
.header.scrolled .nav__link { color: var(--carbon); }
.nav__link::after {
  content: ""; position: absolute; left: 0; bottom: -4px; height: 2px; width: 0;
  background: var(--celeste); transition: width .3s var(--ease);
}
.nav__link:hover::after { width: 100%; }
.nav__link:hover { color: var(--celeste); }
.header.scrolled .nav__link:hover { color: var(--celeste-dark); }
.nav__cta { display: flex; align-items: center; gap: 14px; }
.nav__cta .btn { padding: 11px 22px; }
.header:not(.scrolled) .nav__cta .btn--ghost { color: #fff; border-color: rgba(255,255,255,.45); }

.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav__toggle span { width: 26px; height: 2px; background: #fff; border-radius: 2px; transition: .3s; }
.header.scrolled .nav__toggle span { background: var(--carbon); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  background: radial-gradient(120% 120% at 80% 0%, #185066 0%, var(--bg-deep-2) 42%, var(--bg-deep) 100%);
  color: #fff; overflow: hidden; padding: 140px 0 90px;
}
.hero__grid-lines { position: absolute; inset: 0; opacity: .5;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 64px 64px; mask-image: radial-gradient(circle at 70% 40%, #000 0%, transparent 75%);
}
.hero__glow { position: absolute; border-radius: 50%; filter: blur(80px); opacity: .5; }
.hero__glow--1 { width: 460px; height: 460px; background: #1c8fbf; top: -120px; right: -80px; }
.hero__glow--2 { width: 380px; height: 380px; background: var(--teal); bottom: -140px; left: -100px; opacity: .35; }
.hero .container { position: relative; z-index: 2; display: grid; grid-template-columns: 1.05fr .95fr; gap: 50px; align-items: center; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 9px; padding: 8px 16px; border-radius: 999px;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16);
  font-family: var(--font-head); font-size: .8rem; font-weight: 500; letter-spacing: .04em; margin-bottom: 26px;
}
.hero__badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 0 rgba(109,195,189,.6); animation: pulse 2.4s infinite; }
@keyframes pulse { 0%{box-shadow:0 0 0 0 rgba(109,195,189,.55)} 70%{box-shadow:0 0 0 12px rgba(109,195,189,0)} 100%{box-shadow:0 0 0 0 rgba(109,195,189,0)} }
.hero h1 { color: #fff; font-size: clamp(2.4rem, 5.2vw, 4rem); }
.hero h1 .accent { color: var(--celeste); }
.hero__text { margin: 24px 0 34px; font-size: 1.16rem; color: #cfe1e9; max-width: 540px; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero__stats { display: flex; gap: 34px; margin-top: 46px; flex-wrap: wrap; }
.hero__stat .num { font-family: var(--font-head); font-weight: 700; font-size: 1.9rem; color: #fff; }
.hero__stat .num span { color: var(--celeste); }
.hero__stat .lbl { font-size: .84rem; color: #9fb8c2; letter-spacing: .02em; }

/* Hero visual: "cámara de visión" */
.hero__visual { position: relative; display: flex; justify-content: center; align-items: center; }
.scanner {
  position: relative; width: min(420px, 90%); aspect-ratio: 1; border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(255,255,255,.09), rgba(255,255,255,.02));
  border: 1px solid rgba(255,255,255,.16); box-shadow: var(--shadow-lg);
  overflow: hidden; backdrop-filter: blur(4px);
}
.scanner__label { position: absolute; top: 16px; left: 18px; z-index: 4; font-family: var(--font-head); font-size: .72rem; letter-spacing: .16em; color: #bfeaf9; }
.scanner__rec { position: absolute; top: 16px; right: 18px; z-index: 4; display: flex; align-items: center; gap: 6px; font-family: var(--font-head); font-size: .7rem; color: #ff8b8b; }
.scanner__rec .d { width: 8px; height: 8px; border-radius: 50%; background: #ff6b6b; animation: pulse 1.6s infinite; }
.scanner__fish { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; }
.scanner__fish svg { width: 62%; opacity: .92; }
/* caja de detección */
.bbox { position: absolute; border: 2px solid var(--celeste); border-radius: 6px; box-shadow: 0 0 22px rgba(79,194,236,.5); animation: bbox 5s var(--ease) infinite; }
.bbox::before { content: attr(data-tag); position: absolute; top: -22px; left: -2px; background: var(--celeste); color: #04303f; font-family: var(--font-head); font-size: .64rem; font-weight: 600; padding: 2px 7px; border-radius: 4px; white-space: nowrap; }
@keyframes bbox { 0%,100%{ transform: translate(0,0) } 50%{ transform: translate(6px,-8px) } }
/* línea de escaneo */
.scanline { position: absolute; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, transparent, var(--celeste), transparent); box-shadow: 0 0 16px var(--celeste); animation: scan 3.4s linear infinite; }
@keyframes scan { 0%{ top: 6%; opacity: 0 } 15%{ opacity:1 } 85%{ opacity:1 } 100%{ top: 94%; opacity: 0 } }
.scanner__corner { position: absolute; width: 26px; height: 26px; border: 2px solid rgba(255,255,255,.5); }
.scanner__corner.tl { top: 46px; left: 14px; border-right:0; border-bottom:0; }
.scanner__corner.tr { top: 46px; right: 14px; border-left:0; border-bottom:0; }
.scanner__corner.bl { bottom: 14px; left: 14px; border-right:0; border-top:0; }
.scanner__corner.br { bottom: 14px; right: 14px; border-left:0; border-top:0; }
.hero__chip {
  position: absolute; background: #fff; color: var(--carbon); border-radius: 12px; padding: 12px 16px;
  box-shadow: var(--shadow-md); display: flex; align-items: center; gap: 10px; font-size: .82rem;
}
.hero__chip .ic { width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; color: #fff; flex: none; }
.hero__chip strong { font-family: var(--font-head); font-size: .95rem; }
.hero__chip small { color: var(--muted); display: block; line-height: 1.2; }
.hero__chip--1 { top: 6%; right: -6%; animation: float 6s ease-in-out infinite; }
.hero__chip--2 { bottom: 8%; left: -8%; animation: float 6s ease-in-out infinite .8s; }
.hero__chip--1 .ic { background: var(--celeste); }
.hero__chip--2 .ic { background: var(--teal); }
@keyframes float { 0%,100%{ transform: translateY(0) } 50%{ transform: translateY(-12px) } }

/* ---------- Franja de confianza ---------- */
.trust { background: var(--carbon); color: #fff; padding: 30px 0; }
.trust .container { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.trust__title { font-family: var(--font-head); font-size: .82rem; letter-spacing: .14em; text-transform: uppercase; color: #a7b6bc; }
.trust__items { display: flex; gap: 40px; flex-wrap: wrap; align-items: center; }
.trust__item { display: flex; align-items: center; gap: 10px; font-family: var(--font-head); font-weight: 500; font-size: .96rem; color: #e7eef1; }
.trust__item svg { width: 20px; height: 20px; color: var(--teal); flex: none; }

/* ---------- Tecnología / pipeline ---------- */
.tech__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.pipeline { display: grid; gap: 14px; }
.pstep {
  display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: flex-start;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px;
  box-shadow: var(--shadow-sm); position: relative; transition: transform .3s var(--ease), box-shadow .3s;
}
.pstep:hover { transform: translateX(6px); box-shadow: var(--shadow-md); border-color: rgba(79,194,236,.4); }
.pstep__n { font-family: var(--font-head); font-weight: 700; font-size: 1rem; width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; background: var(--bg-soft); color: var(--celeste-dark); border: 1px solid var(--line); flex: none; }
.pstep:hover .pstep__n { background: var(--celeste); color: #fff; border-color: var(--celeste); }
.pstep h4 { font-size: 1.05rem; margin-bottom: 3px; }
.pstep p { font-size: .95rem; color: var(--muted); }
.tech__panel {
  background: linear-gradient(165deg, var(--bg-deep-2), var(--bg-deep)); border-radius: var(--radius-lg);
  padding: 34px; color: #fff; box-shadow: var(--shadow-lg); position: relative; overflow: hidden;
}
.tech__panel::after { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px); background-size: 40px 40px; opacity: .5; mask-image: radial-gradient(circle at 50% 30%, #000, transparent 80%); }
.tech__panel h3 { color: #fff; position: relative; z-index: 2; }
.tech__panel > p { color: #bcd4dd; position: relative; z-index: 2; margin-top: 8px; }
.metric-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 26px; position: relative; z-index: 2; }
.metric { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); border-radius: 14px; padding: 18px; }
.metric .v { font-family: var(--font-head); font-weight: 700; font-size: 1.7rem; color: var(--celeste); }
.metric .k { font-size: .82rem; color: #a9c4ce; }
.tech__panel .note { position: relative; z-index: 2; margin-top: 22px; font-size: .82rem; color: #8fb0bb; display: flex; align-items: center; gap: 8px; }

/* ---------- Soluciones (tarjetas) ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 34px 30px;
  box-shadow: var(--shadow-sm); transition: transform .35s var(--ease), box-shadow .35s; position: relative; overflow: hidden;
}
.card::before { content: ""; position: absolute; left: 0; top: 0; height: 4px; width: 100%; background: linear-gradient(90deg, var(--celeste), var(--teal)); transform: scaleX(0); transform-origin: left; transition: transform .4s var(--ease); }
.card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.card:hover::before { transform: scaleX(1); }
.card__icon { width: 58px; height: 58px; border-radius: 16px; display: grid; place-items: center; margin-bottom: 22px; background: var(--bg-soft); color: var(--celeste-dark); border: 1px solid var(--line); }
.card__icon svg { width: 28px; height: 28px; }
.card:hover .card__icon { background: linear-gradient(160deg, var(--celeste), var(--teal)); color: #fff; border-color: transparent; }
.card h3 { margin-bottom: 10px; }
.card p { color: var(--muted); font-size: .97rem; }
.card__tag { display: inline-block; margin-top: 18px; font-family: var(--font-head); font-size: .74rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--celeste-dark); background: rgba(79,194,236,.1); padding: 5px 12px; border-radius: 999px; }

/* ---------- Valores ---------- */
.values { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 10px; }
.value { text-align: center; padding: 30px 18px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); transition: transform .3s var(--ease); }
.value:hover { transform: translateY(-6px); border-color: rgba(109,195,189,.5); }
.value__ic { width: 54px; height: 54px; border-radius: 50%; display: grid; place-items: center; margin: 0 auto 14px; background: var(--bg-soft); color: var(--teal); }
.value h4 { font-size: 1.05rem; }
.value p { font-size: .86rem; color: var(--muted); margin-top: 4px; }

/* ---------- Sobre nosotros ---------- */
.about__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about__media { position: relative; }
.about__frame {
  border-radius: var(--radius-lg); overflow: hidden; background: linear-gradient(160deg, var(--bg-deep-2), var(--bg-deep));
  aspect-ratio: 4/3.4; box-shadow: var(--shadow-lg); display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 20px; color: #fff; padding: 30px; position: relative;
}
.about__frame .iso { width: 120px; opacity: .95; }
.about__frame .cap { font-family: var(--font-head); letter-spacing: .16em; font-size: .74rem; color: #bcd4dd; text-transform: uppercase; }
.about__ribbon { position: absolute; bottom: -22px; right: -12px; background: #fff; border-radius: 16px; box-shadow: var(--shadow-md); padding: 16px 20px; display: flex; gap: 14px; align-items: center; }
.about__ribbon .big { font-family: var(--font-head); font-weight: 700; font-size: 1.5rem; color: var(--carbon); }
.about__ribbon small { color: var(--muted); font-size: .8rem; }
.about__ribbon .sep { width: 1px; height: 34px; background: var(--line); }
.about p + p { margin-top: 16px; }
.about ul.check { margin-top: 24px; display: grid; gap: 12px; }
.about ul.check li { display: flex; gap: 12px; align-items: flex-start; color: var(--ink); }
.about ul.check li svg { width: 22px; height: 22px; color: var(--teal); flex: none; margin-top: 2px; }
.about ul.check li b { font-family: var(--font-head); }
.team { display: flex; gap: 10px; align-items: center; margin-top: 30px; flex-wrap: wrap; }
.team__avatars { display: flex; }
.team__avatars span { width: 40px; height: 40px; border-radius: 50%; border: 2px solid #fff; margin-left: -10px; display: grid; place-items: center; font-family: var(--font-head); font-weight: 600; font-size: .82rem; color: #fff; }
.team__avatars span:first-child { margin-left: 0; }
.team small { color: var(--muted); }

/* ---------- CTA banda ---------- */
.ctaband { background: linear-gradient(120deg, var(--carbon) 0%, #22423a 100%); color: #fff; border-radius: var(--radius-lg); padding: 56px; text-align: center; position: relative; overflow: hidden; }
.ctaband::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 20% 20%, rgba(79,194,236,.25), transparent 40%), radial-gradient(circle at 85% 80%, rgba(109,195,189,.25), transparent 40%); }
.ctaband > * { position: relative; z-index: 2; }
.ctaband h2 { color: #fff; }
.ctaband p { color: #d5dee0; max-width: 620px; margin: 12px auto 28px; }
.ctaband .btn { }

/* ---------- Contacto ---------- */
.contact__grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 54px; }
.contact__info h2 { }
.contact__list { margin-top: 30px; display: grid; gap: 22px; }
.contact__item { display: flex; gap: 16px; align-items: flex-start; }
.contact__item .ic { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--bg-soft); color: var(--celeste-dark); border: 1px solid var(--line); flex: none; }
.contact__item .k { font-family: var(--font-head); font-weight: 600; font-size: .95rem; }
.contact__item .v { color: var(--muted); font-size: .95rem; }
.contact__item a.v:hover { color: var(--celeste-dark); }

.form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-md); }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-family: var(--font-head); font-weight: 500; font-size: .86rem; margin-bottom: 7px; color: var(--carbon); }
.field label .req { color: var(--celeste-dark); }
.field input, .field select, .field textarea {
  width: 100%; font-family: var(--font-body); font-size: .96rem; color: var(--ink);
  padding: 13px 15px; border: 1.5px solid var(--line); border-radius: 12px; background: #fbfdfe; transition: border .2s, box-shadow .2s;
}
.field textarea { resize: vertical; min-height: 118px; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 0; border-color: var(--celeste); box-shadow: 0 0 0 4px rgba(79,194,236,.15); background: #fff; }
.form .btn { width: 100%; margin-top: 6px; }
.form__note { font-size: .8rem; color: var(--muted); margin-top: 14px; text-align: center; }
.form__ok { display: none; text-align: center; padding: 20px; }
.form__ok.show { display: block; }
.form__ok .ok-ic { width: 68px; height: 68px; border-radius: 50%; background: rgba(109,195,189,.15); color: var(--teal); display: grid; place-items: center; margin: 0 auto 16px; }
.form__ok h3 { margin-bottom: 8px; }
.form__ok p { color: var(--muted); }
.hidden-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.error-msg { color: #d9534f; font-size: .78rem; margin-top: 5px; display: none; }
.field.invalid input, .field.invalid select, .field.invalid textarea { border-color: #e6a3a0; }
.field.invalid .error-msg { display: block; }

/* ---------- Footer ---------- */
.footer { background: var(--carbon-900); color: #cdd6d9; padding: 70px 0 26px; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.footer__logo img { height: 34px; margin-bottom: 18px; }
.footer__about { font-size: .92rem; color: #9aa8ac; max-width: 320px; }
.footer h5 { font-family: var(--font-head); font-size: .95rem; color: #fff; margin-bottom: 18px; }
.footer ul li { margin-bottom: 11px; }
.footer ul li a { font-size: .92rem; color: #a7b4b8; transition: color .2s; }
.footer ul li a:hover { color: var(--celeste); }
.footer__social { display: flex; gap: 12px; margin-top: 6px; }
.footer__social a { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: rgba(255,255,255,.06); color: #cdd6d9; transition: .25s; }
.footer__social a:hover { background: var(--celeste); color: #04303f; transform: translateY(-3px); }
.footer__bottom { margin-top: 50px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.09); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .84rem; color: #879498; }
.footer__bottom .tag { color: var(--teal); font-family: var(--font-head); }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; } .reveal.d2 { transition-delay: .16s; } .reveal.d3 { transition-delay: .24s; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero .container, .tech__grid, .about__grid, .contact__grid { grid-template-columns: 1fr; }
  .hero__visual { order: -1; margin-bottom: 20px; }
  .cards, .values { grid-template-columns: 1fr 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .nav__menu, .nav__cta .btn--ghost { display: none; }
  .nav__toggle { display: flex; }
  .nav__menu.open {
    display: flex; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; gap: 0;
    background: #fff; padding: 10px 0; box-shadow: var(--shadow-md); border-top: 1px solid var(--line);
  }
  .nav__menu.open .nav__link { color: var(--carbon); padding: 14px 24px; width: 100%; }
  .nav__menu.open .nav__link::after { display: none; }
  .section { padding: 80px 0; }
  .ctaband { padding: 40px 26px; }
  .contact__item .v { word-break: break-word; }
}
@media (max-width: 560px) {
  .cards, .values, .form__row, .metric-cards { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  h2 { font-size: 1.7rem; }
  .hero__chip { display: none; }
  .hero__stats { gap: 22px; }
  .section { padding: 64px 0; }
  .form { padding: 24px; }
}