/* ============================================================
   ANALÍTICA EC — Corporate Website Stylesheet
   Version: 1.0.0
   Author: Analítica EC Design System
   ============================================================ */

/* ── 1. CUSTOM PROPERTIES ─────────────────────────────────── */
:root {
  /* Brand colors */
  --color-primary:        #0047AB;
  --color-primary-dark:   #003080;
  --color-primary-light:  #0066CC;
  --color-accent:         #0099FF;
  --color-accent-soft:    rgba(0, 153, 255, 0.12);

  /* Neutral scale */
  --color-white:          #FFFFFF;
  --color-gray-50:        #F8FAFC;
  --color-gray-100:       #F1F5F9;
  --color-gray-200:       #E2E8F0;
  --color-gray-300:       #CBD5E1;
  --color-gray-400:       #94A3B8;
  --color-gray-500:       #64748B;
  --color-gray-600:       #475569;
  --color-gray-700:       #334155;
  --color-gray-800:       #1E293B;
  --color-gray-900:       #0F172A;

  /* Typography */
  --font-display:   'Barlow', 'Helvetica Neue', Arial, sans-serif;
  --font-body:      'DM Sans', 'Helvetica Neue', Arial, sans-serif;
  --font-mono:      'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs:   0.25rem;
  --space-sm:   0.5rem;
  --space-md:   1rem;
  --space-lg:   1.5rem;
  --space-xl:   2rem;
  --space-2xl:  3rem;
  --space-3xl:  5rem;
  --space-4xl:  8rem;

  /* Layout */
  --container:    1280px;
  --nav-height:   72px;
  --radius-sm:    4px;
  --radius-md:    8px;
  --radius-lg:    16px;
  --radius-xl:    24px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.04);
  --shadow-lg:  0 10px 40px rgba(0,0,0,.10), 0 4px 12px rgba(0,0,0,.06);
  --shadow-xl:  0 20px 60px rgba(0,0,0,.12), 0 8px 20px rgba(0,0,0,.06);
  --shadow-blue:0 8px 32px rgba(0, 71, 171, 0.20);

  /* Transitions */
  --ease-out:     cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out:  cubic-bezier(0.4, 0, 0.2, 1);
  --duration-sm:  150ms;
  --duration-md:  280ms;
  --duration-lg:  500ms;
}

/* ── 2. RESET & BASE ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--color-gray-800);
  background: var(--color-white);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, textarea, select { font: inherit; }

/* ── 3. TYPOGRAPHY ────────────────────────────────────────── */
.t-overline {
  font-family: var(--font-display);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.t-h1 {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 5.5vw, 4.5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--color-gray-900);
}

.t-h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -.018em;
  color: var(--color-gray-900);
}

.t-h3 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.2vw, 2rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -.012em;
}

.t-h4 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.35;
}

.t-lead {
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  color: var(--color-gray-500);
  line-height: 1.75;
}

.t-body { font-size: 1rem; line-height: 1.7; }
.t-small { font-size: .875rem; line-height: 1.6; }
.t-xs    { font-size: .75rem;  line-height: 1.5; }

/* ── 4. LAYOUT UTILITIES ──────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.section { padding-block: clamp(4rem, 8vw, 7rem); }
.section--sm { padding-block: clamp(2.5rem, 5vw, 4rem); }
.section--lg { padding-block: clamp(6rem, 10vw, 9rem); }
.section--dark { background: var(--color-gray-900); color: var(--color-white); }
.section--gray { background: var(--color-gray-50); }

.section-header { max-width: 640px; margin-bottom: var(--space-3xl); }
.section-header--center { margin-inline: auto; text-align: center; }
.section-header .t-overline { margin-bottom: var(--space-md); }
.section-header .t-h2 { margin-bottom: var(--space-lg); }
.section-header .t-lead { max-width: 520px; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-xl); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-xl); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-xl); }

/* ── 5. NAVIGATION ────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-md) var(--ease-in-out),
              box-shadow var(--duration-md) var(--ease-in-out);
}

.nav.scrolled {
  border-bottom-color: var(--color-gray-200);
  box-shadow: var(--shadow-sm);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.nav__logo img { height: 36px; width: auto; }

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav__link {
  font-family: var(--font-display);
  font-size: .875rem;
  font-weight: 500;
  color: var(--color-gray-600);
  padding: var(--space-sm) .875rem;
  border-radius: var(--radius-sm);
  transition: color var(--duration-sm), background var(--duration-sm);
  white-space: nowrap;
}

.nav__link:hover { color: var(--color-primary); background: var(--color-accent-soft); }
.nav__link.active { color: var(--color-primary); }

.nav__cta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-shrink: 0;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  z-index: 1001;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-gray-700);
  border-radius: 2px;
  transition: transform var(--duration-md) var(--ease-out),
              opacity var(--duration-md);
}

.nav__hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile drawer */
.nav__mobile {
  display: none;
  position: fixed;
  inset: 0;
  top: var(--nav-height);
  background: var(--color-white);
  padding: var(--space-xl);
  flex-direction: column;
  gap: var(--space-xs);
  z-index: 999;
  overflow-y: auto;
  transform: translateY(-8px);
  opacity: 0;
  transition: opacity var(--duration-md) var(--ease-out),
              transform var(--duration-md) var(--ease-out);
  pointer-events: none;
}

.nav__mobile.open {
  display: flex;
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.nav__mobile .nav__link {
  font-size: 1.1rem;
  padding: .875rem 1rem;
  border-radius: var(--radius-md);
}

/* ── 6. BUTTONS ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-display);
  font-size: .9rem;
  font-weight: 600;
  line-height: 1;
  padding: .75rem 1.5rem;
  border-radius: var(--radius-sm);
  transition: all var(--duration-md) var(--ease-out);
  white-space: nowrap;
  cursor: pointer;
  border: 1.5px solid transparent;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-blue);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 12px 40px rgba(0, 71, 171, 0.30);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-accent-soft);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-gray-600);
  border-color: var(--color-gray-200);
}

.btn--ghost:hover { background: var(--color-gray-100); color: var(--color-gray-900); }

.btn--lg { font-size: 1rem; padding: .95rem 2rem; }
.btn--sm { font-size: .8rem; padding: .55rem 1.1rem; }

.btn--white {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: transparent;
  box-shadow: var(--shadow-lg);
}
.btn--white:hover { transform: translateY(-2px); box-shadow: var(--shadow-xl); }

/* ── 7. HERO SECTION ──────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  overflow: hidden;
  background: var(--color-white);
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

/* Geometric grid lines background */
.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(0,71,171,.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0,71,171,.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 80% 70% at 60% 50%, black 30%, transparent 100%);
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: orbFloat 8s ease-in-out infinite;
}

.hero__orb--1 {
  width: 600px; height: 600px;
  top: -150px; right: -100px;
  background: radial-gradient(circle, rgba(0,153,255,.12) 0%, transparent 70%);
  animation-delay: 0s;
}

.hero__orb--2 {
  width: 400px; height: 400px;
  bottom: -100px; right: 200px;
  background: radial-gradient(circle, rgba(0,71,171,.10) 0%, transparent 70%);
  animation-delay: 3s;
}

.hero__orb--3 {
  width: 300px; height: 300px;
  top: 30%; left: -80px;
  background: radial-gradient(circle, rgba(0,153,255,.08) 0%, transparent 70%);
  animation-delay: 5s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%  { transform: translate(20px, -30px) scale(1.05); }
  66%  { transform: translate(-15px, 20px) scale(.96); }
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
  width: 100%;
}

.hero__content { max-width: 620px; }

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-display);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border: 1px solid rgba(0,153,255,.2);
  border-radius: 100px;
  padding: .35rem 1rem;
  margin-bottom: var(--space-xl);
}

.hero__eyebrow::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%  { opacity: .5; transform: scale(1.4); }
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5.5vw, 5rem);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -.03em;
  color: var(--color-gray-900);
  margin-bottom: var(--space-xl);
}

.hero__title .accent { color: var(--color-primary); }

.hero__title .line-2 {
  display: block;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: clamp(1.05rem, 1.4vw, 1.15rem);
  color: var(--color-gray-500);
  line-height: 1.75;
  max-width: 500px;
  margin-bottom: var(--space-2xl);
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.hero__stats {
  display: flex;
  gap: var(--space-2xl);
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-gray-200);
}

.hero__stat-value {
  font-family: var(--font-display);
  font-size: 1.875rem;
  font-weight: 800;
  color: var(--color-gray-900);
  line-height: 1;
}

.hero__stat-label {
  font-size: .8rem;
  color: var(--color-gray-400);
  margin-top: .25rem;
  text-transform: uppercase;
  letter-spacing: .08em;
}

/* Hero visual — dashboard mockup */
.hero__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__dashboard {
  width: 100%;
  max-width: 580px;
  background: var(--color-gray-900);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl), 0 0 0 1px rgba(255,255,255,.06);
  overflow: hidden;
  animation: dashFloat 6s ease-in-out infinite;
}

@keyframes dashFloat {
  0%, 100% { transform: translateY(0) rotateX(0); }
  50%  { transform: translateY(-12px) rotateX(1deg); }
}

.dash__header {
  background: rgba(255,255,255,.04);
  border-bottom: 1px solid rgba(255,255,255,.08);
  padding: .875rem 1.25rem;
  display: flex;
  align-items: center;
  gap: .75rem;
}

.dash__dots { display: flex; gap: .4rem; }
.dash__dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.dash__dot--r { background: #FF5F56; }
.dash__dot--y { background: #FFBD2E; }
.dash__dot--g { background: #27C93F; }

.dash__title {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: rgba(255,255,255,.4);
  flex: 1;
  text-align: center;
}

.dash__body { padding: 1.25rem; }

.dash__kpis {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .75rem;
  margin-bottom: .75rem;
}

.dash__kpi {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-md);
  padding: .875rem;
}

.dash__kpi-label {
  font-size: .65rem;
  color: rgba(255,255,255,.4);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: .35rem;
}

.dash__kpi-val {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-white);
}

.dash__kpi-delta {
  font-size: .65rem;
  color: #27C93F;
  margin-top: .2rem;
}

.dash__chart-area {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: .75rem;
}

.dash__chart-label {
  font-size: .65rem;
  color: rgba(255,255,255,.35);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: .75rem;
}

.dash__bars {
  display: flex;
  align-items: flex-end;
  gap: .5rem;
  height: 80px;
}

.dash__bar {
  flex: 1;
  background: linear-gradient(to top, var(--color-primary), var(--color-accent));
  border-radius: 3px 3px 0 0;
  transition: height .3s ease;
}
.dash__bar:nth-child(2n) { background: linear-gradient(to top, rgba(0,71,171,.6), rgba(0,153,255,.6)); }

.dash__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
}

.dash__mini-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-md);
  padding: .875rem;
}

.dash__mini-label {
  font-size: .6rem;
  color: rgba(255,255,255,.35);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: .5rem;
}

.dash__progress-bar {
  height: 4px;
  background: rgba(255,255,255,.1);
  border-radius: 2px;
  overflow: hidden;
}

.dash__progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
  animation: progressGrow 2s ease-out forwards;
}

@keyframes progressGrow {
  from { width: 0; }
}

.dash__status-list { display: flex; flex-direction: column; gap: .4rem; }
.dash__status-item {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .65rem;
  color: rgba(255,255,255,.5);
}
.dash__status-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ── 8. CLIENTS / TRUST BAR ───────────────────────────────── */
.trust {
  padding-block: var(--space-2xl);
  border-top: 1px solid var(--color-gray-200);
  border-bottom: 1px solid var(--color-gray-200);
  background: var(--color-gray-50);
}

.trust__label {
  text-align: center;
  font-size: .8rem;
  color: var(--color-gray-400);
  text-transform: uppercase;
  letter-spacing: .12em;
  margin-bottom: var(--space-xl);
}

.trust__logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(2rem, 5vw, 4rem);
  flex-wrap: wrap;
}

.trust__logo {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-gray-300);
  letter-spacing: .05em;
  transition: color var(--duration-md);
  user-select: none;
}
.trust__logo:hover { color: var(--color-primary); }

/* ── 9. ABOUT SECTION ─────────────────────────────────────── */
.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: center;
}

.about__visual {
  position: relative;
}

.about__cards-stack {
  position: relative;
  height: 480px;
}

.about__card {
  position: absolute;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-200);
  padding: var(--space-xl);
  transition: transform var(--duration-lg) var(--ease-out);
}

.about__card--main {
  left: 0; top: 0;
  width: 75%;
  z-index: 2;
}

.about__card--secondary {
  right: 0; bottom: 40px;
  width: 65%;
  z-index: 1;
  background: var(--color-primary);
  border-color: transparent;
  color: var(--color-white);
}

.about__card-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  font-size: 1.25rem;
}

.about__card--secondary .about__card-icon {
  background: rgba(255,255,255,.15);
}

.about__pillars {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.about__pillar {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}

.about__pillar-icon {
  width: 40px; height: 40px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--color-accent-soft);
  border: 1px solid rgba(0,153,255,.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.1rem;
}

.about__pillar-title { font-weight: 600; color: var(--color-gray-900); margin-bottom: .25rem; }
.about__pillar-text { font-size: .9rem; color: var(--color-gray-500); }

/* ── 10. SERVICES SECTION ─────────────────────────────────── */
.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: all var(--duration-md) var(--ease-out);
  position: relative;
  overflow: hidden;
  cursor: default;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-md) var(--ease-out);
}

.service-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
  transform: translateY(-4px);
}

.service-card:hover::before { transform: scaleX(1); }

.service-card__icon {
  width: 52px; height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: var(--space-lg);
  transition: background var(--duration-md), transform var(--duration-md);
}

.service-card:hover .service-card__icon {
  background: var(--color-primary);
  transform: scale(1.05);
}

.service-card__title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: var(--space-md);
}

.service-card__desc {
  font-size: .9rem;
  color: var(--color-gray-500);
  line-height: 1.7;
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: var(--space-lg);
}

.tag {
  font-size: .7rem;
  font-weight: 500;
  padding: .25rem .65rem;
  border-radius: 100px;
  background: var(--color-gray-100);
  color: var(--color-gray-500);
  letter-spacing: .04em;
}

/* ── 11. SOLUTIONS ────────────────────────────────────────── */
.solutions__inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(3rem, 6vw, 5rem);
  align-items: start;
}

.solutions__list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.solution-item {
  padding: var(--space-lg) var(--space-xl);
  border-left: 2px solid var(--color-gray-200);
  cursor: pointer;
  transition: all var(--duration-md);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.solution-item.active,
.solution-item:hover {
  border-left-color: var(--color-primary);
  background: var(--color-accent-soft);
}

.solution-item__title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-gray-700);
  transition: color var(--duration-sm);
}

.solution-item.active .solution-item__title,
.solution-item:hover .solution-item__title {
  color: var(--color-primary);
}

.solution-item__desc {
  font-size: .875rem;
  color: var(--color-gray-400);
  margin-top: .3rem;
  display: none;
}

.solution-item.active .solution-item__desc { display: block; }

.solutions__preview {
  position: sticky;
  top: calc(var(--nav-height) + 2rem);
  background: var(--color-gray-900);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.solutions__preview-inner { padding: var(--space-2xl); }
.solutions__preview-tag {
  display: inline-block;
  background: rgba(0,153,255,.15);
  color: var(--color-accent);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: .3rem .8rem;
  border-radius: 100px;
  margin-bottom: var(--space-lg);
}

.solutions__preview h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.solutions__preview p {
  font-size: .95rem;
  color: rgba(255,255,255,.55);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}

.solutions__features {
  display: flex;
  flex-direction: column;
  gap: .75rem;
}

.solutions__feature {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: .875rem;
  color: rgba(255,255,255,.7);
}

.solutions__feature::before {
  content: '';
  width: 16px; height: 16px;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(0,153,255,.2);
  border: 1.5px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8l3.5 3.5L13 5' stroke='%230099FF' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

/* ── 12. SIGMA SECTION ────────────────────────────────────── */
.sigma {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-gray-900) 0%, #0a1628 50%, var(--color-gray-900) 100%);
  color: var(--color-white);
}

.sigma__bg-pattern {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(ellipse 70% 80% at 70% 50%, rgba(0,71,171,.25) 0%, transparent 60%),
    linear-gradient(to right, rgba(0,153,255,.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0,153,255,.03) 1px, transparent 1px);
  background-size: auto, 60px 60px, 60px 60px;
}

.sigma__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: center;
}

.sigma__overline {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.sigma__logo-mark {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-md);
  padding: .75rem 1.25rem;
  margin-bottom: var(--space-xl);
}

.sigma__logo-letter {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-accent), var(--color-white));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.sigma__logo-text { }
.sigma__logo-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.2;
}
.sigma__logo-full {
  font-size: .7rem;
  color: rgba(255,255,255,.4);
  letter-spacing: .04em;
}

.sigma__headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.025em;
  color: var(--color-white);
  margin-bottom: var(--space-lg);
}

.sigma__desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,.55);
  line-height: 1.75;
  margin-bottom: var(--space-2xl);
}

.sigma__modules {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
  margin-bottom: var(--space-2xl);
}

.sigma__module {
  display: flex;
  align-items: center;
  gap: .65rem;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-md);
  padding: .75rem 1rem;
  font-size: .85rem;
  color: rgba(255,255,255,.75);
  transition: all var(--duration-md);
}

.sigma__module:hover {
  background: rgba(0,153,255,.1);
  border-color: rgba(0,153,255,.3);
  color: var(--color-white);
}

.sigma__module-icon {
  font-size: 1rem;
  flex-shrink: 0;
}

/* SIGMA visual: interface mockup */
.sigma__interface {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,.4);
}

.sigma__interface-header {
  background: rgba(0,153,255,.1);
  border-bottom: 1px solid rgba(255,255,255,.08);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sigma__interface-title {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--color-accent);
  letter-spacing: .08em;
}

.sigma__interface-status {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .65rem;
  color: #27C93F;
}

.sigma__interface-status::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #27C93F;
  animation: pulse 2s ease-in-out infinite;
}

.sigma__interface-body { padding: 1.25rem; }

.sigma__metrics-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: .625rem;
  margin-bottom: .75rem;
}

.sigma__metric {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-md);
  padding: .75rem;
  text-align: center;
}

.sigma__metric-val {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-white);
}

.sigma__metric-lbl {
  font-size: .55rem;
  color: rgba(255,255,255,.35);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-top: .15rem;
}

.sigma__map-area {
  background: rgba(0,71,171,.08);
  border: 1px solid rgba(0,153,255,.15);
  border-radius: var(--radius-md);
  height: 140px;
  margin-bottom: .75rem;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sigma__map-label {
  font-size: .65rem;
  color: rgba(255,255,255,.2);
  text-transform: uppercase;
  letter-spacing: .12em;
}

/* Animated map dots */
.sigma__map-dot {
  position: absolute;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent);
  animation: mapPulse 3s ease-in-out infinite;
}

.sigma__map-dot:nth-child(2) { top: 30%; left: 25%; animation-delay: .5s; background: #27C93F; box-shadow: 0 0 8px #27C93F; }
.sigma__map-dot:nth-child(3) { top: 60%; left: 55%; animation-delay: 1s; }
.sigma__map-dot:nth-child(4) { top: 20%; left: 70%; animation-delay: 1.5s; background: #FFBD2E; box-shadow: 0 0 8px #FFBD2E; }
.sigma__map-dot:nth-child(5) { top: 75%; left: 80%; animation-delay: 2s; }

@keyframes mapPulse {
  0%, 100% { transform: scale(1); opacity: .8; }
  50%  { transform: scale(1.6); opacity: .4; }
}

.sigma__bottom-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .625rem;
}

.sigma__list-card {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius-md);
  padding: .875rem;
}

.sigma__list-title {
  font-size: .6rem;
  color: rgba(255,255,255,.3);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: .625rem;
}

.sigma__list-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .3rem 0;
  border-bottom: 1px solid rgba(255,255,255,.05);
  font-size: .65rem;
  color: rgba(255,255,255,.5);
}

.sigma__list-badge {
  padding: .1rem .45rem;
  border-radius: 100px;
  font-size: .55rem;
  font-weight: 600;
}

.badge--green { background: rgba(39,201,63,.15); color: #27C93F; }
.badge--blue  { background: rgba(0,153,255,.15);  color: var(--color-accent); }
.badge--yellow{ background: rgba(255,189,46,.15); color: #FFBD2E; }

/* ── 13. BENEFITS ─────────────────────────────────────────── */
.benefits__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.benefit-card {
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
}

.benefit-card__number {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-md);
}

.benefit-card__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.benefit-card__desc {
  font-size: .9rem;
  color: rgba(255,255,255,.5);
  line-height: 1.65;
}

/* ── 14. SECTORS ──────────────────────────────────────────── */
.sectors__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
}

.sector-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--duration-md) var(--ease-out);
  cursor: default;
}

.sector-card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(0,153,255,.3);
  transform: translateY(-3px);
}

.sector-card__icon {
  font-size: 2.2rem;
  margin-bottom: var(--space-md);
}

.sector-card__name {
  font-family: var(--font-display);
  font-size: .9rem;
  font-weight: 600;
  color: var(--color-gray-700);
}

/* ── 15. USE CASES ────────────────────────────────────────── */
.cases__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.case-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--duration-md) var(--ease-out);
}

.case-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.case-card__header {
  padding: var(--space-xl) var(--space-xl) var(--space-md);
  border-bottom: 1px solid var(--color-gray-100);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.case-card__sector-badge {
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  padding: .3rem .75rem;
  border-radius: 100px;
}

.case-card__body { padding: var(--space-xl); }

.case-card__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-bottom: var(--space-md);
}

.case-card__desc {
  font-size: .9rem;
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.case-card__result {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .85rem;
  font-weight: 500;
  color: var(--color-primary);
}

.case-card__result::before {
  content: '↑';
  display: inline-block;
  font-weight: 700;
}

/* ── 16. TECHNOLOGY ───────────────────────────────────────── */
.tech__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: center;
}

.tech__stack {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-2xl);
}

.tech__item {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .875rem var(--space-lg);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  font-size: .875rem;
  font-weight: 500;
  color: var(--color-gray-700);
  transition: all var(--duration-md);
}

.tech__item:hover {
  border-color: rgba(0,153,255,.3);
  background: var(--color-accent-soft);
  color: var(--color-primary);
}

.tech__item-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}

.tech__visual {
  position: relative;
}

.tech__rings {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  max-width: 480px;
  margin: auto;
}

.tech__ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0,153,255,.15);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}

.tech__ring--1 { width: 90%; height: 90%; animation: ringRotate 20s linear infinite; }
.tech__ring--2 { width: 65%; height: 65%; animation: ringRotate 15s linear infinite reverse; border-color: rgba(0,71,171,.2); }
.tech__ring--3 { width: 40%; height: 40%; animation: ringRotate 10s linear infinite; border-color: rgba(0,153,255,.3); }

@keyframes ringRotate {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to   { transform: translate(-50%, -50%) rotate(360deg); }
}

.tech__ring-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 80px; height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 40px rgba(0,153,255,.4);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-white);
  letter-spacing: .05em;
}

.tech__orbit-item {
  position: absolute;
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  top: 50%; left: 50%;
  transform-origin: 0 0;
}

/* ── 17. CTA SECTION ──────────────────────────────────────── */
.cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 50%, #001a52 100%);
  color: var(--color-white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta__bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(ellipse 60% 60% at 50% 0%, rgba(0,153,255,.25) 0%, transparent 60%),
    linear-gradient(to right, rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size: auto, 50px 50px, 50px 50px;
}

.cta__inner {
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: auto;
}

.cta__headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.025em;
  margin-bottom: var(--space-lg);
}

.cta__sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,.65);
  margin-bottom: var(--space-2xl);
}

.cta__actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

/* ── 18. CONTACT SECTION ──────────────────────────────────── */
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(3rem, 6vw, 5rem);
  align-items: start;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.contact__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
}

.contact__item-icon {
  width: 44px; height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--color-accent-soft);
  border: 1px solid rgba(0,153,255,.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.contact__item-label {
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--color-gray-400);
  margin-bottom: .25rem;
}

.contact__item-val {
  font-weight: 600;
  color: var(--color-gray-800);
}

/* Form */
.form {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  box-shadow: var(--shadow-lg);
}

.form__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.form__group {
  display: flex;
  flex-direction: column;
  gap: .4rem;
}

.form__group--full { grid-column: 1 / -1; }

.form__label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--color-gray-600);
  letter-spacing: .04em;
}

.form__input,
.form__textarea,
.form__select {
  width: 100%;
  padding: .75rem 1rem;
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  font-size: .9rem;
  color: var(--color-gray-800);
  background: var(--color-gray-50);
  transition: all var(--duration-md);
  outline: none;
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  border-color: var(--color-primary);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(0,71,171,.08);
}

.form__textarea { resize: vertical; min-height: 130px; }

.form__submit {
  width: 100%;
  margin-top: var(--space-md);
  justify-content: center;
  font-size: 1rem;
  padding: 1rem;
}

.form__note {
  text-align: center;
  font-size: .75rem;
  color: var(--color-gray-400);
  margin-top: var(--space-md);
}

/* ── 19. FOOTER ───────────────────────────────────────────── */
.footer {
  background: var(--color-gray-900);
  color: var(--color-white);
  padding-top: clamp(3rem, 6vw, 5rem);
}

.footer__main {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: clamp(2rem, 4vw, 3rem);
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer__brand p {
  font-size: .9rem;
  color: rgba(255,255,255,.45);
  line-height: 1.7;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-xl);
  max-width: 280px;
}

.footer__socials {
  display: flex;
  gap: .75rem;
}

.footer__social {
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.5);
  font-size: .9rem;
  transition: all var(--duration-md);
}

.footer__social:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.footer__col-title {
  font-family: var(--font-display);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.35);
  margin-bottom: var(--space-lg);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.footer__link {
  font-size: .875rem;
  color: rgba(255,255,255,.5);
  transition: color var(--duration-sm);
  padding: .1rem 0;
}

.footer__link:hover { color: var(--color-white); }

.footer__bottom {
  padding: var(--space-xl) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer__copy {
  font-size: .8rem;
  color: rgba(255,255,255,.25);
}

.footer__legal {
  display: flex;
  gap: var(--space-xl);
}

.footer__legal a {
  font-size: .8rem;
  color: rgba(255,255,255,.25);
  transition: color var(--duration-sm);
}

.footer__legal a:hover { color: rgba(255,255,255,.6); }

/* ── 20. ANIMATIONS & SCROLL REVEAL ──────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--duration-lg) var(--ease-out),
              transform var(--duration-lg) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }
.reveal-delay-5 { transition-delay: 500ms; }

/* ── 21. SCROLL PROGRESS BAR ──────────────────────────────── */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  z-index: 2000;
  width: 0%;
  transition: width .1s linear;
}

/* ── 22. BACK TO TOP ──────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-blue);
  opacity: 0;
  transform: translateY(12px);
  transition: all var(--duration-md) var(--ease-out);
  pointer-events: none;
  z-index: 900;
  font-size: 1.1rem;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.back-to-top:hover { background: var(--color-primary-dark); transform: translateY(-2px); }

/* ── 23. RESPONSIVE ───────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero__inner        { grid-template-columns: 1fr; gap: var(--space-2xl); }
  .hero__visual       { order: -1; max-width: 540px; margin: auto; }
  .about__inner       { grid-template-columns: 1fr; }
  .about__cards-stack { height: 300px; }
  .sigma__inner       { grid-template-columns: 1fr; }
  .tech__inner        { grid-template-columns: 1fr; }
  .contact__inner     { grid-template-columns: 1fr; }
  .footer__main       { grid-template-columns: 1fr 1fr; }
  .solutions__inner   { grid-template-columns: 1fr; }
  .solutions__preview { position: static; }
  .cases__grid        { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav__links, .nav__cta { display: none; }
  .nav__hamburger       { display: flex; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero__stats          { gap: var(--space-xl); }
  .benefits__grid       { grid-template-columns: 1fr; }
  .sigma__modules       { grid-template-columns: 1fr; }
  .sigma__metrics-row   { grid-template-columns: repeat(2, 1fr); }
  .form__grid           { grid-template-columns: 1fr; }
  .footer__main         { grid-template-columns: 1fr; }
  .footer__bottom       { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .hero__actions        { flex-direction: column; width: 100%; }
  .hero__actions .btn   { width: 100%; justify-content: center; }
  .hero__stats          { flex-direction: column; gap: var(--space-lg); }
  .sectors__grid        { grid-template-columns: 1fr 1fr; }
}

/* ── 24. PRINT ────────────────────────────────────────────── */
@media print {
  .nav, .back-to-top, .scroll-progress { display: none; }
  body { color: #000; }
}