/* =========================================================
   H1 ESTUDIO — hoja de estilos
   Sistema editorial: papel + tinta + acento hidrogeno
   ========================================================= */

:root{
  --paper:        #F5F4F0;
  --paper-soft:   #EFEDE7;
  --ink:          #14181A;
  --ink-soft:     #23282B;
  --stone:        #6E716C;
  --stone-light:  #9A9C96;
  --line:         #D9D7D0;
  --line-strong:  #BFBDB5;
  --accent:       #3E5C76;
  --accent-soft:  #E7ECEF;

  --font-display: 'Syne', 'Helvetica Neue', Arial, sans-serif;
  --font-sans:    'Syne', 'Helvetica Neue', Arial, sans-serif;

  --container-pad: clamp(1.25rem, 4vw, 4rem);
  --section-pad-y: clamp(4rem, 9vw, 8.5rem);

  --ease: cubic-bezier(.22,.61,.36,1);
}

/* -------------------- Reset / base -------------------- */
*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img{ max-width: 100%; display:block; }
a{ color: inherit; text-decoration: none; }
::selection{ background: var(--ink); color: var(--paper); }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.container-edit{
  width: 100%;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
  margin-left: auto;
  margin-right: auto;
  max-width: 1600px;
}

.section{ padding-top: var(--section-pad-y); padding-bottom: var(--section-pad-y); }
.section-line-top{ border-top: 1px solid var(--line); }

/* -------------------- Typography -------------------- */
h1,h2,h3,h4,
.display-serif{
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.12;
  margin: 0;
}
.eyebrow{
  font-family: var(--font-sans);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--stone);
  margin-bottom: 1.1rem;
  display:flex;
  align-items:center;
  gap: .6rem;
}
.eyebrow::before{
  content:"";
  width: 26px;
  height: 1px;
  background: var(--accent);
  display:inline-block;
}
.section-title{
  font-size: clamp(1.9rem, 4vw, 3.1rem);
  max-width: 18ch;
}
.body-copy{
  color: var(--ink-soft);
  max-width: 62ch;
  font-size: 1.02rem;
}
.body-copy.lede{
  font-size: clamp(1.1rem, 1.8vw, 1.4rem);
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--ink);
  max-width: 34ch;
  line-height: 1.45;
}
.text-stone{ color: var(--stone); }
.hairline{ border: none; border-top: 1px solid var(--line); margin: 0; }

/* -------------------- Buttons -------------------- */
.btn-h1{
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .95rem 1.7rem;
  font-family: var(--font-sans);
  font-size: .92rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  transition: background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease);
  white-space: nowrap;
}
.btn-h1:hover{ background: var(--ink); color: var(--paper); }
.btn-h1-solid{
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn-h1-solid:hover{ background: var(--accent); border-color: var(--accent); color: var(--paper); }
.btn-h1-light{
  border-color: rgba(245,244,240,.55);
  color: var(--paper);
}
.btn-h1-light:hover{ background: var(--paper); color: var(--ink); }

/* -------------------- Marca H1 (logo) -------------------- */
.brand-chip{
  display:flex;
  align-items:center;
  gap: .65rem;
  background: var(--paper);
  border-radius: 999px;
  padding: .45rem 1.15rem .45rem .45rem;
  box-shadow: 0 6px 20px rgba(20,24,26,.16);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
  flex-shrink: 0;
}
.brand-chip:hover{ transform: translateY(-1px); box-shadow: 0 8px 24px rgba(20,24,26,.22); }
.brand-chip .brand-emblem{
  width: 32px;
  height: 32px;
  display:block;
  flex-shrink: 0;
}
.brand-chip .brand-wordmark{
  height: 16px;
  width: auto;
  display:block;
}
.offcanvas-header .brand-chip .brand-emblem{ width: 28px; height: 28px; }
.offcanvas-header .brand-chip .brand-wordmark{ height: 14px; }

/* ===================== NAVBAR ===================== */
.navbar-h1{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1040;
  padding: 1.1rem 0;
  background: transparent;
  transition: background .5s var(--ease), padding .5s var(--ease), box-shadow .5s var(--ease), border-color .5s var(--ease);
  border-bottom: 1px solid transparent;
}
.navbar-h1 .nav-link{
  color: var(--paper);
  font-size: .92rem;
  letter-spacing: .01em;
  padding: .4rem 0;
  margin: 0 1rem;
  position: relative;
  opacity: .92;
  transition: opacity .3s var(--ease);
  text-shadow: 0 1px 6px rgba(0,0,0,.25);
}
.navbar-h1 .nav-link::after{
  content:"";
  position:absolute; left:0; bottom:0;
  width:0; height:1px;
  background: currentColor;
  transition: width .35s var(--ease);
}
.navbar-h1 .nav-link:hover{ opacity: 1; }
.navbar-h1 .nav-link:hover::after{ width: 100%; }
.navbar-h1 .btn-h1{ margin-left: .5rem; border-color: rgba(245,244,240,.7); color: var(--paper); }
.navbar-h1 .btn-h1:hover{ background: var(--paper); color: var(--ink); }

.navbar-h1.is-scrolled{
  background: rgba(245,244,240,.92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  padding: .7rem 0;
  border-bottom: 1px solid var(--line);
}
.navbar-h1.is-scrolled .nav-link{ color: var(--ink); text-shadow: none; }
.navbar-h1.is-scrolled .btn-h1{ border-color: var(--ink); color: var(--ink); }
.navbar-h1.is-scrolled .btn-h1:hover{ background: var(--ink); color: var(--paper); }
.navbar-h1.is-scrolled .brand-chip{ box-shadow: none; background: transparent; padding-left: 0; }

.navbar-toggler-h1{
  border: none;
  background: none;
  width: 34px; height: 22px;
  position: relative;
  padding: 0;
}
.navbar-toggler-h1 span{
  position:absolute; left:0; right:0; height:1px;
  background: currentColor;
  transition: transform .3s var(--ease), opacity .3s var(--ease), top .3s var(--ease);
}
.navbar-toggler-h1 span:nth-child(1){ top: 2px; }
.navbar-toggler-h1 span:nth-child(2){ top: 11px; }
.navbar-toggler-h1 span:nth-child(3){ top: 20px; }

.offcanvas-h1{
  background: var(--ink);
  color: var(--paper);
  width: min(420px, 88vw);
}
.offcanvas-h1 .nav-link{
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--paper);
  padding: .5rem 0;
  border-bottom: 1px solid rgba(245,244,240,.15);
}
.offcanvas-h1 .offcanvas-footer{
  border-top: 1px solid rgba(245,244,240,.15);
  padding-top: 1.5rem;
  color: var(--stone-light);
  font-size: .88rem;
}

/* ===================== HERO ===================== */
.hero{
  position: relative;
  height: 100svh;
  min-height: 560px;
  width: 100%;
  overflow: hidden;
  background: var(--ink);
}
.hero .carousel, .hero .carousel-inner, .hero .carousel-item{ height: 100%; }
.hero .carousel-item{ position: relative; }
.hero .carousel-item img{
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.03);
}
.hero .carousel-item.active img{
  animation: heroZoom 9s var(--ease) forwards;
}
@keyframes heroZoom{
  from{ transform: scale(1.08); }
  to{ transform: scale(1); }
}
.hero-scrim{
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(20,24,26,.55) 0%, rgba(20,24,26,.05) 30%, rgba(20,24,26,.15) 60%, rgba(20,24,26,.75) 100%);
  pointer-events: none;
}
.hero-content{
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 3;
  padding: 0 var(--container-pad) clamp(2rem, 5vw, 4rem);
  color: var(--paper);
}
.hero-mark{
  font-family: var(--font-display);
  font-size: clamp(4rem, 13vw, 9.5rem);
  line-height: .82;
  letter-spacing: -0.02em;
}
.hero-tagline{
  max-width: 34ch;
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  color: rgba(245,244,240,.88);
  margin-top: 1rem;
  font-weight: 300;
}
.hero-meta{
  display:flex; align-items:center; gap: .6rem;
  font-size: .82rem;
  color: rgba(245,244,240,.75);
  margin-top: 2.4rem;
}
.hero .carousel-indicators{
  position: absolute;
  bottom: clamp(1.5rem, 3vw, 2.5rem);
  right: var(--container-pad);
  left: auto;
  margin: 0;
  width: auto;
  gap: .5rem;
  z-index: 4;
}
.hero .carousel-indicators [data-bs-target]{
  width: 28px; height: 2px;
  border-radius: 0;
  background-color: rgba(245,244,240,.4);
  opacity: 1;
  border: none;
  transition: background-color .3s var(--ease);
}
.hero .carousel-indicators .active{ background-color: var(--paper); }
.hero .carousel-control-prev, .hero .carousel-control-next{
  width: 64px;
  opacity: 1;
  z-index: 4;
}
.hero .carousel-control-prev-icon, .hero .carousel-control-next-icon{
  width: 1.4rem; height: 1.4rem;
  filter: none;
}
.hero-scroll-cue{
  position:absolute; z-index:4;
  right: var(--container-pad);
  top: clamp(1.5rem, 4vw, 2.5rem);
  color: rgba(245,244,240,.8);
  font-size: .78rem;
  writing-mode: vertical-rl;
  display:flex; align-items:center; gap:.6rem;
}
.hero-scroll-cue .line{ width:1px; height: 46px; background: rgba(245,244,240,.4); }

/* ===================== ESTUDIO ===================== */
.estudio-grid{
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;              /* antes: start → centra la imagen apaisada */
}

.estudio-figure{
  position: relative;
  margin-top: 0;                    /* antes tenía offset vertical */
}

.estudio-figure img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 1;              /* misma proporción que la imagen */
  object-fit: contain;              /* nunca recorta */
  background: var(--paper);         /* el fondo casi blanco se funde con la sección */
  mix-blend-mode: multiply;         /* elimina el "borde" blanco de la imagen */
}

.estudio-figure .cap{
  position: static;                 /* antes absoluto: tapaba la imagen, que ahora es baja */
  background: none;
  border: 0;
  border-top: 1px solid var(--line);
  padding: .9rem 0 0;
  margin-top: 1rem;
  max-width: none;
  font-size: .82rem;
  color: var(--stone);
}

.estudio-lead{
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.35rem);
  line-height: 1.28;
  font-weight: 400;
  margin-bottom: 2rem;
}
.estudio-facts{
  margin-top: 2.5rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem 2rem;
}
.fact{
  border-top: 1px solid var(--line);
  padding-top: .9rem;
}
.fact .fact-label{ font-size: .78rem; color: var(--stone); margin-bottom: .35rem; }
.fact .fact-value{ font-family: var(--font-display); font-size: 1.15rem; }

/* Mobile: una columna */
@media (max-width: 860px){
  .estudio-grid{ grid-template-columns: 1fr; }
}

/* ===================== FILOSOFIA ===================== */
.filosofia{
  background: var(--ink);
  color: var(--paper);
}
.filosofia .eyebrow{ color: var(--stone-light); }
.filosofia .eyebrow::before{ background: var(--accent-soft); }
.filosofia .section-title{ color: var(--paper); }
.filosofia-row{
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}
.filosofia-row img{
  width: 100%;
  aspect-ratio: 8/5;
  object-fit: cover;
  filter: grayscale(15%);
}
.filosofia-copy p{ color: rgba(245,244,240,.78); max-width: 56ch; }
.pillars{
  margin-top: 2.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}
.pillar{
  border: 1px solid rgba(245,244,240,.25);
  border-radius: 999px;
  padding: .55rem 1.1rem;
  font-size: .84rem;
  color: rgba(245,244,240,.9);
}

/* ===================== SERVICIOS ===================== */
.servicios-list{ margin-top: 2.5rem; }
.servicio-row{
  display: grid;
  grid-template-columns: 2.2rem 1fr auto;
  align-items: baseline;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
  transition: padding-left .4s var(--ease), background .4s var(--ease);
}
.servicios-list .servicio-row:last-child{ border-bottom: 1px solid var(--line); }
.servicio-row:hover{ padding-left: .6rem; background: var(--paper-soft); }
.servicio-index{ font-family: var(--font-sans); color: var(--stone-light); font-size: .85rem; }
.servicio-name{ font-family: var(--font-display); font-size: clamp(1.15rem, 2.2vw, 1.6rem); }
.servicio-tag{ font-size: .8rem; color: var(--stone); white-space: nowrap; }

/* ===================== SISTEMAS CONSTRUCTIVOS ===================== */
.sistemas-wrap{
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2rem, 6vw, 4rem);
}
.sistemas-figure img{
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  position: sticky;
  top: 110px;
}
.sistema-item{
  border-top: 1px solid var(--line);
  padding: 1.6rem 0;
}
.sistema-item:last-child{ border-bottom: 1px solid var(--line); }
.sistema-head{
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  gap: 1rem;
}
.sistema-head h3{
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 500;
}
.sistema-head .plus{
  width: 26px; height: 26px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
  transition: transform .35s var(--ease), background .35s var(--ease);
}
.sistema-head .plus::before, .sistema-head .plus::after{
  content:"";
  position:absolute; top:50%; left:50%;
  background: var(--ink);
  transition: transform .35s var(--ease), opacity .35s var(--ease);
}
.sistema-head .plus::before{ width: 9px; height: 1px; transform: translate(-50%,-50%); }
.sistema-head .plus::after{ width: 1px; height: 9px; transform: translate(-50%,-50%); }
.sistema-item.open .plus{ background: var(--ink); }
.sistema-item.open .plus::before, .sistema-item.open .plus::after{ background: var(--paper); }
.sistema-item.open .plus::after{ transform: translate(-50%,-50%) rotate(90deg); opacity:0; }
.sistema-body{
  max-height: 0;
  overflow: hidden;
  transition: max-height .45s var(--ease), margin-top .45s var(--ease);
}
.sistema-item.open .sistema-body{ max-height: 240px; margin-top: 1rem; }
.sistema-body p{ color: var(--ink-soft); max-width: 60ch; font-size: .96rem; }
.sistema-tag{
  display:inline-block;
  font-size: .74rem;
  color: var(--accent);
  border: 1px solid var(--accent-soft);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: .25rem .7rem;
  margin-top: .7rem;
}

/* ===================== PROYECTOS (filtros + carruseles individuales) ===================== */
.proyectos-filtros{
  display: flex;
  flex-wrap: nowrap;
  overflow-x: auto;
  gap: .6rem;
  list-style: none;
  padding: 0 0 .6rem;
  margin: 3rem 0 0;
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
}
.proyectos-filtros::-webkit-scrollbar{ height: 4px; }
.proyectos-filtros::-webkit-scrollbar-thumb{ background: var(--line-strong); }
.proyectos-filtros .nav-item{ flex-shrink: 0; }
.filtro-btn{
  font-family: var(--font-sans);
  font-size: .86rem;
  letter-spacing: .01em;
  white-space: nowrap;
  padding: .7rem 1.3rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  color: var(--stone);
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}
.filtro-btn:hover{ border-color: var(--ink); color: var(--ink); }
.filtro-btn.active{
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.proyectos-panels{ margin-top: 2.8rem; }
.proyecto-meta{
  display:flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.4rem;
}
.proyecto-meta h3{
  font-size: clamp(1.4rem, 2.6vw, 2rem);
}
.proyecto-count{ font-size: .82rem; color: var(--stone); white-space: nowrap; }

.proyecto-carousel{ position: relative; }
.proyecto-carousel .carousel-inner{
  border: 1px solid var(--line);
}
.proyecto-carousel .carousel-item{ aspect-ratio: 16/9; }
.proyecto-carousel .carousel-item img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  background: var(--paper-soft);
}
.proyecto-placeholder{
  width: 100%;
  height: 100%;
  display:flex;
  flex-direction: column;
  align-items:center;
  justify-content:center;
  gap: .5rem;
  background:
    repeating-linear-gradient(45deg, var(--paper-soft) 0 14px, var(--paper) 14px 28px);
  border: 1px dashed var(--line-strong);
}
.proyecto-placeholder .ph-name{
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.4vw, 1.8rem);
  color: var(--ink-soft);
}
.proyecto-placeholder .ph-num{
  font-size: .8rem;
  letter-spacing: .04em;
  color: var(--stone);
}
.proyecto-carousel .carousel-control-prev,
.proyecto-carousel .carousel-control-next{
  width: 56px;
  opacity: 0;
  transition: opacity .3s var(--ease);
}
.proyecto-carousel:hover .carousel-control-prev,
.proyecto-carousel:hover .carousel-control-next{ opacity: 1; }
.proyecto-carousel .carousel-control-prev-icon,
.proyecto-carousel .carousel-control-next-icon{
  width: 1.3rem; height: 1.3rem;
  background-color: rgba(20,24,26,.55);
  border-radius: 50%;
  padding: .6rem;
  background-origin: content-box;
}
.proyecto-carousel .carousel-indicators{
  position: static;
  margin: 1rem 0 0;
  gap: .4rem;
  flex-wrap: wrap;
}
.proyecto-carousel .carousel-indicators [data-bs-target]{
  width: 22px; height: 2px;
  border-radius: 0;
  background-color: var(--line-strong);
  opacity: 1;
  border: none;
  transition: background-color .3s var(--ease);
}
.proyecto-carousel .carousel-indicators .active{ background-color: var(--ink); }

/* ===================== DIFERENCIALES ===================== */
.diferenciales{
  background: var(--paper-soft);
}
.dif-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  margin-top: 3rem;
  border: 1px solid var(--line);
}
.dif-item{
  background: var(--paper-soft);
  padding: clamp(1.6rem, 3vw, 2.4rem);
}
.dif-item .dif-figure{
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.9rem);
  color: var(--accent);
  margin-bottom: .8rem;
}
.dif-item .dif-text{ font-size: .92rem; color: var(--ink-soft); }

/* ===================== CTA ===================== */
.cta-section{
  background: var(--ink);
  color: var(--paper);
  text-align: center;
  padding-top: clamp(4.5rem, 10vw, 8rem);
  padding-bottom: clamp(4.5rem, 10vw, 8rem);
}
.cta-title{
  font-size: clamp(2.3rem, 6vw, 4.6rem);
  color: var(--paper);
  max-width: 18ch;
  margin: 0 auto 2.2rem;
}
.cta-actions{
  display:flex; gap: 1rem; justify-content:center; flex-wrap: wrap;
}

/* ===================== CONTACTO ===================== */
.contacto-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
}
.contacto-list{ margin-top: 2rem; }
.contacto-row{
  display:flex; justify-content: space-between; align-items:center;
  padding: 1.2rem 0;
  border-top: 1px solid var(--line);
  gap: 1rem;
}
.contacto-list .contacto-row:last-child{ border-bottom: 1px solid var(--line); }
.contacto-row .label{ font-size: .82rem; color: var(--stone); }
.contacto-row .value{ font-family: var(--font-display); font-size: 1.15rem; }
.contacto-row a.value:hover{ color: var(--accent); }

.form-h1 label{
  font-size: .8rem;
  color: var(--stone);
  margin-bottom: .4rem;
  display:block;
}
.form-h1 .form-control{
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  padding: .7rem 0;
  font-family: var(--font-sans);
  color: var(--ink);
}
.form-h1 .form-control:focus{
  box-shadow: none;
  border-color: var(--ink);
}
.form-h1 .mb-4{ margin-bottom: 1.7rem !important; }
.form-status{ font-size: .85rem; margin-top: 1rem; min-height: 1.2em; color: var(--accent); }

/* ===================== FOOTER ===================== */
.footer-h1{
  background: var(--ink);
  color: rgba(245,244,240,.85);
  padding-top: clamp(3.5rem, 7vw, 5.5rem);
}
.footer-h1 h5{
  font-family: var(--font-sans);
  font-size: .82rem;
  color: var(--stone-light);
  margin-bottom: 1.2rem;
}
.footer-h1 a{ color: rgba(245,244,240,.85); transition: color .3s var(--ease); }
.footer-h1 a:hover{ color: var(--paper); text-decoration: underline; text-underline-offset: 3px; }
.footer-h1 .footer-links li{ margin-bottom: .65rem; font-size: .94rem; }
.footer-h1 p.small-copy{ color: rgba(245,244,240,.6); font-size: .9rem; max-width: 34ch; }
.footer-bottom{
  border-top: 1px solid rgba(245,244,240,.15);
  margin-top: 3rem;
  padding: 1.6rem 0;
  display:flex; justify-content: space-between; align-items:center; flex-wrap: wrap; gap: .6rem;
  font-size: .82rem;
  color: rgba(245,244,240,.6);
}
.footer-bottom a{ color: rgba(245,244,240,.85); }
.social-row{ display:flex; gap: 1.1rem; margin-top: 1.4rem; }
.social-row a{
  width: 38px; height: 38px;
  border: 1px solid rgba(245,244,240,.25);
  border-radius: 50%;
  display:flex; align-items:center; justify-content:center;
  transition: background .3s var(--ease), border-color .3s var(--ease);
}
.social-row a:hover{ background: rgba(245,244,240,.1); border-color: rgba(245,244,240,.5); }

/* ===================== Reveal on scroll ===================== */
.reveal{
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
}
.reveal.is-visible{ opacity: 1; transform: translateY(0); }

/* ===================== WhatsApp float ===================== */
.wa-float{
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 1030;
  width: 54px; height: 54px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  display:flex; align-items:center; justify-content:center;
  box-shadow: 0 8px 26px rgba(20,24,26,.28);
  transition: background .3s var(--ease), transform .3s var(--ease);
}
.wa-float:hover{ background: var(--accent); transform: translateY(-2px); }

/* ===================== Responsive ===================== */
@media (max-width: 991.98px){
  .estudio-grid,
  .filosofia-row,
  .sistemas-wrap,
  .contacto-grid{
    grid-template-columns: 1fr;
  }
  .estudio-figure{ margin-top: 2.5rem; order: -1; }
  .estudio-figure .cap{ left: .8rem; bottom: .8rem; }
  .sistemas-figure img{ position: static; aspect-ratio: 16/9; }
  .dif-grid{ grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 575.98px){
  .dif-grid{ grid-template-columns: 1fr; }
  .servicio-row{ grid-template-columns: 1.6rem 1fr; }
  .servicio-tag{ grid-column: 1 / -1; }
  .hero-mark{ font-size: clamp(3.2rem, 18vw, 5rem); }
  .cta-actions{ flex-direction: column; align-items: stretch; }
  .proyecto-meta{ flex-direction: column; align-items:flex-start; gap:.3rem; }
}

/* =========================================================
   OPTIMIZACIÓN DE RENDIMIENTO
   content-visibility "salta" el trabajo de layout/paint de
   las secciones que todavía no están cerca del viewport.
   No cambia nada visible: el navegador calcula el tamaño
   real apenas la sección se acerca a la pantalla.
   ========================================================= */
#filosofia,
#servicios,
#sistemas,
#proyectos,
.diferenciales,
.cta-section,
#contacto,
.footer-h1{
  content-visibility: auto;
  contain-intrinsic-size: 1px 1200px;
}



/* =========================================================
   AJUSTES POR TIPOGRAFÍA SYNE
   ========================================================= */
.estudio-lead{ font-size: clamp(1.3rem, 2.5vw, 1.95rem); line-height: 1.35; font-weight: 500; }
.hero-mark{ font-size: clamp(3.4rem, 11vw, 8rem); letter-spacing: 0; }
.cta-title{ font-size: clamp(2rem, 5vw, 3.9rem); max-width: 20ch; }
.servicio-name{ font-size: clamp(1.05rem, 2vw, 1.4rem); font-weight: 500; }
.sistema-head h3{ font-size: clamp(1rem, 1.8vw, 1.2rem); }
.proyecto-meta h3{ font-size: clamp(1.25rem, 2.3vw, 1.7rem); }
.proyecto-placeholder .ph-name{ font-size: clamp(1.1rem, 2.1vw, 1.5rem); }
.fact .fact-value{ font-size: 1.05rem; font-weight: 500; }
.dif-item .dif-figure{ font-size: clamp(1.8rem, 3.4vw, 2.5rem); font-weight: 600; }
.contacto-row .value{ font-size: 1.05rem; font-weight: 500; }
.offcanvas-h1 .nav-link{ font-size: 1.6rem; font-weight: 500; }

@media (max-width: 575.98px){
  .hero-mark{ font-size: clamp(3rem, 16vw, 4.4rem); }
}