/* ==========================================================
   ANDES ENERGY GROUP — Corporate site
   Palette: navy (dominant) · white · grays · green (accent)
   ========================================================== */

:root {
  --navy-950: #050F1B;
  --navy-900: #081829;
  --navy-800: #0B2238;
  --navy-700: #12314B;
  --ink: #0E2233;
  --body: #46586A;
  --muted: #7C8B99;
  --line: #E3EAEF;
  --bg-soft: #F4F7F9;
  --white: #FFFFFF;
  --green: #8FC63F;
  --green-deep: #567F1D;
  --radius: 14px;
  --shadow: 0 18px 50px -18px rgba(8, 24, 41, .22);
  --container: 1180px;
  --header-h: 84px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--body);
  background: var(--white);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}
.container.narrow { max-width: 860px; }
.center { text-align: center; }

h1, h2, h3, h4 { color: var(--ink); font-weight: 700; line-height: 1.15; }
h2 { font-size: clamp(1.75rem, 3.4vw, 2.6rem); letter-spacing: -.02em; }

section { scroll-margin-top: var(--header-h); }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: .74rem;
  font-weight: 800;
  letter-spacing: .22em;
  color: var(--green-deep);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.kicker::after { content: ""; width: 42px; height: 2px; background: var(--green); }
.kicker.center::after { display: none; }
.kicker.center::before { content: ""; }

.lead { font-size: 1.11rem; color: var(--body); }
.body-text { margin-top: 16px; }
.statement {
  margin-top: 26px;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--ink);
  border-left: 3px solid var(--green);
  padding-left: 18px;
}

.section { padding: 104px 0; position: relative; }
.section-soft { background: var(--bg-soft); }
.section-dark { background: var(--navy-900); }
.section-dark h2, .section-dark h3 { color: var(--white); }
.section-dark p { color: #A8B7C4; }
.section-dark .kicker { color: var(--green); }

.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head .lead { margin-top: 18px; }
.container.narrow .lead { margin-top: 18px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 15px 28px;
  font-family: inherit;
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .16em;
  border-radius: 4px;
  transition: all .25s ease;
  cursor: pointer;
}
.btn .arrow { transition: transform .25s ease; }
.btn:hover .arrow { transform: translateX(5px); }

.btn-outline-light { color: var(--white); border: 1.5px solid rgba(255,255,255,.65); }
.btn-outline-light:hover { background: rgba(255,255,255,.12); border-color: var(--white); }

.btn-green {
  background: var(--green);
  border: 1.5px solid var(--green);
  color: var(--navy-950);
  box-shadow: 0 14px 34px -12px rgba(143,198,63,.45);
}
.btn-green:hover { background: #A3D65A; border-color: #A3D65A; transform: translateY(-2px); }

.btn-ghost { color: rgba(255,255,255,.85); }
.btn-ghost:hover { color: var(--green); }

.btn-navy { background: var(--navy-800); color: var(--white); }
.btn-navy:hover { background: var(--green-deep); }

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 26px;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .16em;
  color: var(--ink);
  border-bottom: 2px solid var(--green);
  padding-bottom: 6px;
}
.btn-link .arrow { transition: transform .25s ease; }
.btn-link:hover .arrow { transform: translateX(5px); }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .3s ease, box-shadow .3s ease;
  background: linear-gradient(to bottom, rgba(5,15,27,.75), rgba(5,15,27,0));
}
.site-header.scrolled {
  background: rgba(8, 24, 41, .96);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 30px -12px rgba(0,0,0,.4);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.brand { display: flex; align-items: center; gap: 12px; color: var(--white); }
.brand-mark { width: 42px; height: 38px; flex-shrink: 0; }
.brand-name {
  display: block;
  font-size: .92rem;
  font-weight: 800;
  letter-spacing: .26em;
  line-height: 1.25;
}
.brand-sub {
  display: block;
  font-size: .56rem;
  font-weight: 700;
  letter-spacing: .5em;
  color: var(--green);
  margin-top: 3px;
}

.main-nav { display: flex; align-items: center; gap: 30px; }
.main-nav > a {
  color: rgba(255,255,255,.85);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .14em;
  padding: 6px 0;
  position: relative;
  transition: color .2s;
}
.main-nav > a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  background: var(--green);
  transition: width .25s ease;
}
.main-nav > a:hover { color: var(--white); }
.main-nav > a:hover::after { width: 100%; }

.lang-switch { display: flex; align-items: center; gap: 8px; margin-left: 10px; }
.lang-sep { color: rgba(255,255,255,.35); font-size: .74rem; }
.lang-btn {
  background: none;
  border: none;
  color: rgba(255,255,255,.55);
  font-family: inherit;
  font-size: .74rem;
  font-weight: 800;
  letter-spacing: .1em;
  cursor: pointer;
  padding: 4px 2px;
  transition: color .2s;
}
.lang-btn:hover { color: var(--white); }
.lang-btn.active { color: var(--green); border-bottom: 2px solid var(--green); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 26px; height: 2px;
  background: var(--white);
  margin: 6px 0;
  transition: all .3s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background: var(--navy-950);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/img/hero-santiago.jpg') center 62% / cover no-repeat;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(5,15,27,.94) 22%, rgba(8,24,41,.72) 52%, rgba(8,24,41,.38) 100%),
    linear-gradient(to top, rgba(5,15,27,.85) 0%, rgba(5,15,27,0) 40%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  opacity: .5;
  pointer-events: none;
}
.hero-grid svg { width: 100%; height: 100%; }
.hero-grid .net line { stroke: rgba(143,198,63,.35); stroke-width: 1; }
.hero-grid .net circle { fill: rgba(143,198,63,.55); }

.hero-content { position: relative; z-index: 2; padding-top: var(--header-h); }

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--green);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .3em;
  text-transform: uppercase;
  margin-bottom: 26px;
}
.hero-kicker::before {
  content: "";
  width: 46px;
  height: 2px;
  background: var(--green);
  flex-shrink: 0;
}

.hero-title {
  color: var(--white);
  font-size: clamp(2.5rem, 6.4vw, 4.6rem);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.08;
  text-shadow: 0 2px 30px rgba(5,15,27,.45);
}
.hero-title em { font-style: normal; color: var(--green); }

.hero-lead-wrap {
  display: flex;
  gap: 22px;
  margin-top: 30px;
  max-width: 540px;
  border-left: 3px solid var(--green);
  padding-left: 22px;
}
.hero-lead {
  color: rgba(255,255,255,.78);
  font-size: 1.06rem;
  line-height: 1.75;
}
.hero-lead strong {
  color: var(--white);
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  margin-top: 44px;
}

/* Entrada escalonada del hero */
@keyframes heroUp {
  from { opacity: 0; transform: translateY(26px); }
  to   { opacity: 1; transform: none; }
}
.hero-kicker    { animation: heroUp .7s ease both; }
.hero-title     { animation: heroUp .7s ease .12s both; }
.hero-lead-wrap { animation: heroUp .7s ease .26s both; }
.hero-actions   { animation: heroUp .7s ease .4s both; }
.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 30px;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255,255,255,.7);
  animation: float 2.4s ease-in-out infinite;
}
.hero-scroll svg { width: 28px; height: 28px; }
@keyframes float { 0%,100% { transform: translate(-50%,0); } 50% { transform: translate(-50%,8px); } }

/* ---------- Quiénes somos ---------- */
.two-col {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 60px;
  align-items: start;
}

.caps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  margin-top: 80px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.cap {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 34px 24px;
  transition: background .25s ease, transform .25s ease;
}
.cap:hover { background: var(--bg-soft); }
.cap h3 { font-size: .8rem; letter-spacing: .12em; margin: 18px 0 10px; }
.cap p { font-size: .85rem; color: var(--muted); line-height: 1.55; }

.cap-icon {
  width: 52px; height: 52px;
  border: 1.5px solid var(--line);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color .25s ease;
}
.cap:hover .cap-icon, .sost-card:hover .cap-icon { border-color: var(--green); }
.cap-icon svg {
  width: 24px; height: 24px;
  fill: none;
  stroke: var(--green-deep);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.caps-note {
  margin-top: 26px;
  font-size: .88rem;
  color: var(--muted);
}

/* ---------- Timeline ---------- */
.timeline {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 34px;
  position: relative;
  padding-top: 10px;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 34px; left: 10px; right: 10px;
  height: 1px;
  background: linear-gradient(to right, var(--line) 0%, var(--green) 100%);
}
.timeline li { position: relative; padding-top: 48px; }
.timeline li::before {
  content: "";
  position: absolute;
  top: 28px; left: 0;
  width: 13px; height: 13px;
  border-radius: 50%;
  background: var(--white);
  border: 3px solid var(--green);
}
.tl-num {
  position: absolute;
  top: -12px; left: 0;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .18em;
  color: var(--green-deep);
}
.timeline h3 { font-size: .84rem; letter-spacing: .1em; margin-bottom: 10px; }
.timeline p { font-size: .86rem; color: var(--muted); line-height: 1.55; }

/* ---------- Cards ENERGY / SOLUTIONS / TECHNOLOGY ---------- */
.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  transition: transform .3s ease, box-shadow .3s ease;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.card-img { aspect-ratio: 16 / 10; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.card:hover .card-img img { transform: scale(1.05); }
.card-badge {
  position: relative;
  width: 58px; height: 58px;
  margin: -29px 0 0 26px;
  border-radius: 50%;
  background: var(--navy-800);
  border: 3px solid var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
}
.card-badge svg {
  width: 24px; height: 24px;
  fill: none;
  stroke: var(--green);
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.card-body { padding: 18px 28px 32px; }
.card-body h3 { font-size: .95rem; letter-spacing: .14em; margin-bottom: 12px; }
.card-body p { font-size: .95rem; color: var(--body); }

/* ---------- Empresas / split ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 560px;
  scroll-margin-top: var(--header-h);
}
.split-text { background: var(--white); display: flex; align-items: center; }
.split-text-inner {
  max-width: calc(var(--container) / 2 - 28px);
  margin-left: auto;
  padding: 90px 70px 90px 28px;
}
.split-img { position: relative; overflow: hidden; }
.split-img img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
.company { margin-top: 40px; border-top: 1px solid var(--line); padding-top: 34px; }
.company h3 { font-size: 1.3rem; letter-spacing: .08em; }
.company-tag {
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--green-deep);
  margin: 8px 0 16px;
}
.company p { margin-bottom: 26px; }
.muted-note { margin-top: 30px; font-size: .85rem; color: var(--muted); }

/* ---------- Estrategia ---------- */
.strategy-grid {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  gap: 70px;
  align-items: start;
}
.lead-dark { margin-top: 20px; font-size: 1rem; }
.pillars {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(255,255,255,.09);
  border: 1px solid rgba(255,255,255,.09);
}
.pillar {
  background: var(--navy-900);
  padding: 38px 34px;
  transition: background .25s ease;
}
.pillar:hover { background: var(--navy-800); }
.pillar h3 { font-size: .95rem; letter-spacing: .18em; margin: 20px 0 12px; }
.pillar p { font-size: .9rem; line-height: 1.6; }
.pillar-icon svg {
  width: 34px; height: 34px;
  fill: none;
  stroke: var(--green);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- Innovación ---------- */
.innov-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 70px;
  align-items: center;
}
.highlight-note {
  border-left: 3px solid var(--green);
  padding-left: 18px;
  color: var(--ink);
  font-weight: 600;
}
.innov-items {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}
.innov-item {
  display: flex;
  align-items: center;
  gap: 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px 22px;
  font-size: .88rem;
  font-weight: 700;
  color: var(--ink);
  transition: border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}
.innov-item:hover {
  border-color: var(--green);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px -14px rgba(8,24,41,.18);
}
.innov-item svg {
  width: 26px; height: 26px;
  flex-shrink: 0;
  fill: none;
  stroke: var(--green-deep);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- Soluciones / chips ---------- */
.chips {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 40px;
}
.chip {
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 100px;
  padding: 10px 22px;
  font-size: .85rem;
  font-weight: 600;
  color: var(--ink);
  transition: all .25s ease;
}
.chip:hover { border-color: var(--green); color: var(--green-deep); }

/* ---------- Expansión ---------- */
.expansion { overflow: hidden; }
.expansion-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/img/world.jpg') center / cover no-repeat;
  opacity: .45;
}
.expansion-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(8,24,41,.92) 0%, rgba(8,24,41,.55) 100%);
}
.expansion .container { position: relative; z-index: 2; }
.expansion-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.exp-col {
  border-top: 2px solid rgba(255,255,255,.15);
  padding-top: 26px;
}
.exp-tag {
  display: inline-block;
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .2em;
  color: #A8B7C4;
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 100px;
  padding: 5px 14px;
  margin-bottom: 18px;
}
.exp-tag.now { color: var(--navy-950); background: var(--green); border-color: var(--green); }
.exp-col h3 { font-size: 1.25rem; letter-spacing: .1em; margin-bottom: 10px; }

/* ---------- Sostenibilidad ---------- */
.sost-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}
.sost-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 28px;
  transition: transform .3s ease, box-shadow .3s ease;
}
.sost-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.sost-card h3 { font-size: 1.02rem; margin: 20px 0 10px; }
.sost-card p { font-size: .9rem; color: var(--muted); }

/* ---------- Alianzas ---------- */
.alliance {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 64px;
  box-shadow: var(--shadow);
}
.alliance-head {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 34px;
  align-items: start;
  max-width: 900px;
}
.alliance-icon {
  width: 90px; height: 90px;
  border: 1.5px solid var(--line);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.alliance-icon svg {
  width: 42px; height: 42px;
  fill: none;
  stroke: var(--green-deep);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.alliance-ctas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  margin-top: 48px;
}
.cta-tile {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  background: var(--navy-800);
  color: var(--white);
  border-radius: 10px;
  padding: 22px 24px;
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .14em;
  transition: background .25s ease, transform .25s ease;
}
.cta-tile .arrow { color: var(--green); transition: transform .25s ease; }
.cta-tile:hover { background: var(--navy-700); transform: translateY(-3px); }
.cta-tile:hover .arrow { transform: translateX(5px); }

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  background: linear-gradient(to bottom, var(--navy-900) 0%, var(--navy-950) 30%);
  color: #93A5B4;
  padding: 84px 0 36px;
  font-size: .87rem;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--green) 0%, rgba(143,198,63,.06) 65%);
}
.footer-top {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) 3fr;
  gap: 70px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-claim { margin-top: 20px; font-size: .9rem; }
.footer-social { display: flex; gap: 14px; margin-top: 26px; }
.footer-social a {
  width: 38px; height: 38px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .25s ease;
}
.footer-social a:hover { border-color: var(--green); color: var(--green); }
.footer-social svg { width: 17px; height: 17px; fill: currentColor; }
.footer-social svg.stroke { fill: none; stroke: currentColor; stroke-width: 1.8; }

.footer-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 34px;
}
.footer-cols h4 {
  color: var(--white);
  font-size: .72rem;
  letter-spacing: .18em;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 12px;
}
.footer-cols h4::before {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 22px; height: 2px;
  background: var(--green);
  opacity: .8;
}
.footer-cols a {
  display: block;
  padding: 5px 0;
  color: #93A5B4;
  transition: color .2s ease, transform .2s ease;
}
.footer-cols a:hover { color: var(--green); transform: translateX(5px); }
.f-mail { color: #C4D2DD; font-weight: 600; word-break: break-all; }

/* ---------- Botón volver arriba ---------- */
.to-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(143,198,63,.5);
  background: rgba(8,24,41,.92);
  color: var(--green);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity .3s ease, transform .3s ease, visibility .3s, background .25s;
  box-shadow: 0 12px 30px -10px rgba(0,0,0,.5);
}
.to-top svg { width: 20px; height: 20px; }
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--green); color: var(--navy-950); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  padding-top: 32px;
  font-size: .8rem;
  color: #6B7E8E;
}
.footer-legal { display: flex; gap: 28px; }
.footer-legal a:hover { color: var(--green); }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-kicker, .hero-title, .hero-lead-wrap, .hero-actions { animation: none; }
  .hero-scroll { animation: none; }
}

/* ==========================================================
   RESPONSIVE
   Breakpoints: 1200 (laptop) · 1080 (nav) · 1024 (tablet)
   820 (tablet vertical / phablet) · 560 (móvil) · 400 (móvil S)
   ========================================================== */

/* ---------- Laptop / pantallas medianas ---------- */
@media (max-width: 1200px) {
  .main-nav { gap: 18px; }
  .main-nav > a { font-size: .7rem; letter-spacing: .1em; }
  .strategy-grid { gap: 46px; }
  .innov-grid { gap: 46px; }
}

/* ---------- Menú hamburguesa (el nav completo no cabe bajo 1080px) ---------- */
@media (max-width: 1080px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: rgba(8, 24, 41, .98);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 18px 28px 30px;
    max-height: calc(100vh - var(--header-h));
    max-height: calc(100svh - var(--header-h));
    overflow-y: auto;
    transform: translateY(-130%);
    visibility: hidden;
    transition: transform .35s ease, visibility 0s linear .35s;
    box-shadow: 0 30px 40px -20px rgba(0,0,0,.5);
  }
  .main-nav.open { transform: translateY(0); visibility: visible; transition: transform .35s ease; }
  .main-nav > a { padding: 13px 0; font-size: .85rem; letter-spacing: .14em; width: 100%; border-bottom: 1px solid rgba(255,255,255,.07); }
  .main-nav > a::after { display: none; }
  .lang-switch { margin: 18px 0 0; }
}

/* ---------- Tablet (horizontal y vertical) ---------- */
@media (max-width: 1024px) {
  .section { padding: 88px 0; }
  .two-col, .strategy-grid, .innov-grid { grid-template-columns: 1fr; gap: 44px; }
  .caps-grid { margin-top: 64px; }
  .timeline { grid-template-columns: repeat(3, 1fr); row-gap: 54px; }
  .timeline::before { display: none; }
  .sost-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .split-img { min-height: 380px; }
  .split-text-inner { max-width: 720px; margin: 0 auto; padding: 76px 28px; }
  .footer-top { grid-template-columns: 1fr; gap: 50px; }
  .footer-cols { grid-template-columns: repeat(3, 1fr); row-gap: 44px; }
  .pillars { grid-template-columns: repeat(2, 1fr); }
  .hero-lead { max-width: 540px; }
}

/* Cards ENERGY/SOLUTIONS/TECHNOLOGY: formato horizontal en tablet */
@media (max-width: 1024px) and (min-width: 641px) {
  .cards-3 { grid-template-columns: 1fr; max-width: 780px; margin: 0 auto; }
  .card { display: grid; grid-template-columns: minmax(240px, 320px) 1fr; }
  .card-img { grid-row: 1 / 3; aspect-ratio: auto; height: 100%; }
  .card-img img { height: 100%; }
  .card-badge { grid-column: 2; margin: 26px 0 0 28px; }
  .card-body { grid-column: 2; padding: 14px 28px 30px; }
}
@media (max-width: 640px) {
  .cards-3 { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; }
}

/* ---------- Tablet vertical / phablet ---------- */
@media (max-width: 820px) {
  .section { padding: 76px 0; }
  .section-head { margin-bottom: 44px; }
  .alliance { padding: 44px 30px; }
  .alliance-head { grid-template-columns: 1fr; gap: 24px; }
  .alliance-icon { width: 68px; height: 68px; }
  .alliance-icon svg { width: 32px; height: 32px; }
  .expansion-cols { grid-template-columns: 1fr; gap: 36px; }
  .hero-actions { gap: 18px; }
  .hero-title { line-height: 1.12; }
  .statement { font-size: 1.05rem; }
}

/* ---------- Móvil ---------- */
@media (max-width: 560px) {
  :root { --header-h: 68px; }
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .brand-mark { width: 34px; height: 31px; }
  .brand-name { font-size: .8rem; letter-spacing: .22em; }
  .brand-sub { font-size: .5rem; }

  .hero-content { padding-top: calc(var(--header-h) + 24px); padding-bottom: 70px; }
  .hero-kicker { font-size: .62rem; letter-spacing: .22em; gap: 10px; }
  .hero-kicker::before { width: 30px; }
  .hero-lead-wrap { margin-top: 24px; padding-left: 16px; }
  .hero-lead { font-size: .98rem; }
  .hero-actions { margin-top: 32px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-grid { opacity: .3; }
  .btn { padding: 13px 20px; font-size: .74rem; letter-spacing: .12em; }

  /* Timeline vertical con línea lateral */
  .timeline { grid-template-columns: 1fr; gap: 0; }
  .timeline::before {
    display: block;
    top: 8px; bottom: 8px; left: 6px; right: auto;
    width: 1px; height: auto;
    background: linear-gradient(to bottom, var(--line) 0%, var(--green) 100%);
  }
  .timeline li { padding: 0 0 36px 34px; }
  .timeline li:last-child { padding-bottom: 0; }
  .timeline li::before { top: 4px; left: 0; }
  .tl-num { position: static; display: block; margin-bottom: 6px; }

  .caps-grid { grid-template-columns: 1fr 1fr; }
  .cap { padding: 26px 18px; }
  .sost-grid { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; }
  .pillar { padding: 30px 26px; }
  .innov-items { grid-template-columns: 1fr; }
  .chips { gap: 10px; }
  .chip { padding: 9px 18px; font-size: .82rem; }
  .split-img { min-height: 300px; }
  .split-text-inner { padding: 60px 20px; }
  .alliance { padding: 36px 22px; border-radius: 14px; }
  .alliance-ctas { grid-template-columns: 1fr; margin-top: 36px; }
  .cta-tile { padding: 19px 20px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .statement { font-size: 1rem; }
  .lead { font-size: 1.02rem; }
}

/* ---------- Móvil pequeño ---------- */
@media (max-width: 400px) {
  .caps-grid { grid-template-columns: 1fr; }
  .cap { display: grid; grid-template-columns: 52px 1fr; column-gap: 18px; align-items: start; }
  .cap h3 { margin: 6px 0 6px; grid-column: 2; }
  .cap p { grid-column: 2; }
  .cap .cap-icon { grid-row: 1 / 3; }
  .hero-title { font-size: 2.2rem; }
}

/* ---------- Footer acordeón en móvil ---------- */
@media (max-width: 700px) {
  .footer-top { gap: 40px; padding-bottom: 36px; }
  .footer-cols { grid-template-columns: 1fr; gap: 0; border-top: 1px solid rgba(255,255,255,.08); }
  .f-col { border-bottom: 1px solid rgba(255,255,255,.08); }
  .footer-cols h4 {
    margin: 0;
    padding: 17px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }
  .footer-cols h4::before { display: none; }
  .footer-cols h4::after {
    content: "+";
    color: var(--green);
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1;
    transition: transform .3s ease;
  }
  .f-col.open h4::after { transform: rotate(45deg); }
  .f-links {
    max-height: 0;
    overflow: hidden;
    transition: max-height .38s ease;
  }
  .f-col.open .f-links { max-height: 420px; }
  .f-links a { padding: 8px 0; }
  .f-links a:last-child { margin-bottom: 16px; }
  .footer-cols a:hover { transform: none; }
  .to-top { right: 16px; bottom: 16px; width: 44px; height: 44px; }
}

/* ---------- Pantallas bajas (móvil apaisado) ---------- */
@media (max-height: 600px) {
  .hero { min-height: auto; }
  .hero-content { padding-top: calc(var(--header-h) + 40px); padding-bottom: 80px; }
  .hero-scroll { display: none; }
}

/* ---------- Táctil: sin efectos hover que "se pegan" ---------- */
@media (hover: none) {
  .card:hover, .sost-card:hover, .innov-item:hover, .cta-tile:hover { transform: none; }
  .card:hover .card-img img { transform: none; }
}