/* 3D Design Variables - Dark Soft Palette */
:root {
  /* Color Palette - Dark Theme with Soft Gradient */
  --ekspert-bg-primary: #0a0a0a; /* Very Dark Gray (Almost Black) */
  --ekspert-bg-secondary: #050505; /* Nearly Black */
  --ekspert-text-primary: #e5e5e5; /* Light Gray for Headings */
  --ekspert-text-muted: #999999; /* Medium Gray for Secondary Text */
  --ekspert-card-base: rgba(20, 20, 20, 0.95); /* Very Dark Gray with transparency */
  --ekspert-border: rgba(0, 0, 0, 0.08); /* Soft Gray border */
  --ekspert-primary: #6b8dd6; /* Soft Pastel Blue */
  --ekspert-primary-light: #8fb0e8; /* Light Pastel Blue */
  --ekspert-accent: #a8c5a0; /* Soft Pastel Green */
  --ekspert-accent-muted: rgba(168, 197, 160, 0.2);
  
  /* 3D Lighting Variables - Soft Shadows and Pastels */
  --ekspert-light-source: top-left;
  --ekspert-shadow-ambient: rgba(0, 0, 0, 0.06);
  --ekspert-shadow-primary: rgba(0, 0, 0, 0.12);
  --ekspert-shadow-lift: rgba(107, 141, 214, 0.15);
  --ekspert-highlight-top: rgba(255, 255, 255, 0.9);
  --ekspert-highlight-left: rgba(0, 0, 0, 0.02);
  
  /* 3D Depth Variables */
  --ekspert-depth-1: 4px;
  --ekspert-depth-2: 8px;
  --ekspert-depth-3: 16px;
  --ekspert-depth-4: 24px;
  --ekspert-depth-5: 32px;
  
  /* Typography */
  --ekspert-font-size-base: clamp(1rem, 0.5vw + 0.8rem, 1.125rem);
  --ekspert-font-size-h1: clamp(2rem, 4vw + 1rem, 3.5rem);
  --ekspert-font-size-h2: clamp(1.5rem, 3vw + 0.8rem, 2.5rem);
  --ekspert-font-size-h3: clamp(1.25rem, 2vw + 0.6rem, 1.75rem);
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, sans-serif;
  background: linear-gradient(180deg, #0a0a0a 0%, #050505 100%);
  background-attachment: fixed;
  color: var(--ekspert-text-primary);
  line-height: 1.6;
  font-size: var(--ekspert-font-size-base);
  overflow-x: hidden;
}

/* Shell Container */
.ekspert-shell {
  width: min(100% - 3rem, 1200px);
  margin-inline: auto;
  padding-block: 1.5rem;
}

/* Header - 3D Effect */
.ekspert-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--ekspert-border);
  box-shadow: 
    0 var(--ekspert-depth-1) var(--ekspert-depth-2) var(--ekspert-shadow-ambient),
    0 0 1px rgba(107, 141, 214, 0.2);
}

.ekspert-header .ekspert-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1rem;
}

.ekspert-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--ekspert-text-primary);
  font-weight: 700;
  font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.ekspert-brand:hover {
  transform: translateY(-2px);
}

.ekspert-logo {
  display: inline-block;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  filter: drop-shadow(0 2px 8px rgba(139, 92, 246, 0.2)) drop-shadow(0 0 12px rgba(245, 158, 11, 0.15));
  animation: ekspertLogoBreathe 4s ease-in-out infinite;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Анімація дихання для логотипу */
@keyframes ekspertLogoBreathe {
  0%, 100% {
    transform: scale(1);
    filter: drop-shadow(0 2px 8px rgba(139, 92, 246, 0.2)) drop-shadow(0 0 12px rgba(245, 158, 11, 0.15));
  }
  50% {
    transform: scale(1.05);
    filter: drop-shadow(0 4px 12px rgba(139, 92, 246, 0.3)) drop-shadow(0 0 16px rgba(245, 158, 11, 0.25));
  }
}

.ekspert-brand:hover .ekspert-logo {
  animation-play-state: paused;
  transform: scale(1.05) translateY(-2px);
  filter: drop-shadow(0 6px 16px rgba(139, 92, 246, 0.35)) drop-shadow(0 0 20px rgba(245, 158, 11, 0.3));
}

.ekspert-nav__toggle { display: none; }
.ekspert-nav__list {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
  align-items: center;
}

.ekspert-nav__list a {
  text-decoration: none;
  color: var(--ekspert-text-muted);
  font-weight: 500;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  padding: 0.5rem 0;
}

.ekspert-nav__list a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--ekspert-primary), var(--ekspert-accent));
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 8px var(--ekspert-primary);
}

.ekspert-nav__list a:hover {
  color: var(--ekspert-text-primary);
}

.ekspert-nav__list a:hover::after {
  width: 100%;
}

/* Hero Section - 3D Volume */
.ekspert-hero {
  padding-block: 6rem 4rem;
  position: relative;
  overflow: clip;
  background: 
    radial-gradient(ellipse 1200px 600px at 20% 0%, rgba(107, 141, 214, 0.04), transparent 70%),
    radial-gradient(ellipse 800px 400px at 80% 100%, rgba(168, 197, 160, 0.03), transparent 70%),
    var(--ekspert-bg-primary);
}

.ekspert-hero__grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.ekspert-hero__content {
  display: grid;
  gap: 1.5rem;
}

.ekspert-hero__eyebrow {
  color: var(--ekspert-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.85rem;
  font-weight: 600;
}

.ekspert-hero__title {
  font-size: var(--ekspert-font-size-h1);
  line-height: 1.1;
  font-weight: 800;
  text-shadow: 
    0 var(--ekspert-depth-1) var(--ekspert-depth-2) var(--ekspert-shadow-ambient);
}

.ekspert-txt-gradient {
  background: linear-gradient(135deg, var(--ekspert-primary), var(--ekspert-accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 2px 4px rgba(107, 141, 214, 0.25));
}

.ekspert-hero__sub {
  color: var(--ekspert-text-muted);
  max-width: 65ch;
  font-size: clamp(1rem, 1.2vw + 0.6rem, 1.25rem);
  line-height: 1.7;
}

.ekspert-hero__cta {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.ekspert-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.ekspert-badge-item {
  padding: 0.5rem 1rem;
  background: var(--ekspert-card-base);
  backdrop-filter: blur(10px);
  border: 1px solid var(--ekspert-border);
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--ekspert-text-muted);
  box-shadow: 
    0 var(--ekspert-depth-1) var(--ekspert-depth-2) var(--ekspert-shadow-ambient),
    inset 0 -1px 2px rgba(0, 0, 0, 0.08),
    inset 0 1px 2px var(--ekspert-highlight-top);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform: perspective(500px) rotateX(0deg);
}

.ekspert-badge-item:hover {
  transform: perspective(500px) rotateX(-3deg) translateY(-4px);
  border-color: var(--ekspert-primary);
  box-shadow: 
    0 var(--ekspert-depth-3) var(--ekspert-depth-4) var(--ekspert-shadow-primary),
    inset 0 -1px 2px rgba(0, 0, 0, 0.08),
    inset 0 1px 2px var(--ekspert-highlight-top),
    0 0 16px var(--ekspert-shadow-lift);
  color: var(--ekspert-text-primary);
}

/* Hero Visual - 3D Elements */
.ekspert-hero__visual {
  position: relative;
  min-height: 400px;
  overflow: visible;
}

.ekspert-orb-3d {
  position: absolute;
  inset: 10% 0 0 10%;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle at 30% 30%, rgba(107, 141, 214, 0.2), rgba(107, 141, 214, 0) 70%);
  filter: blur(6px);
  border-radius: 50%;
  transform: translate(10%, 10%);
  animation: ekspertFloat 8s ease-in-out infinite;
  box-shadow: 
    0 var(--ekspert-depth-4) var(--ekspert-depth-5) var(--ekspert-shadow-primary),
    inset 0 -20px 40px rgba(0, 0, 0, 0.1),
    inset 0 20px 40px var(--ekspert-highlight-top);
}

.ekspert-mesh-3d {
  position: absolute;
  inset: 15% 0 0 20%;
  height: 70%;
  width: 70%;
  background: conic-gradient(from 180deg at 50% 50%, rgba(107, 141, 214, 0.12), rgba(168, 197, 160, 0.08), rgba(107, 141, 214, 0.12));
  filter: blur(30px);
  border-radius: 30px;
  mix-blend-mode: screen;
  animation: ekspertMeshRotate 20s linear infinite;
}

.ekspert-rings-3d {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.ekspert-rings-3d span {
  position: absolute;
  border: 2px dashed var(--ekspert-border);
  border-radius: 999px;
  animation: ekspertSpin 20s linear infinite;
  box-shadow: 
    0 var(--ekspert-depth-1) var(--ekspert-depth-2) var(--ekspert-shadow-ambient),
    inset 0 0 20px var(--ekspert-accent-muted);
}

.ekspert-rings-3d span:nth-child(1) {
  width: 60%;
  height: 60%;
}

.ekspert-rings-3d span:nth-child(2) {
  width: 75%;
  height: 75%;
  animation-duration: 28s;
  opacity: 0.6;
}

.ekspert-rings-3d span:nth-child(3) {
  width: 90%;
  height: 90%;
  animation-duration: 36s;
  opacity: 0.3;
}

@keyframes ekspertFloat {
  0%, 100% { transform: translate(10%, 10%) translateY(0); }
  50% { transform: translate(10%, 10%) translateY(-20px); }
}

@keyframes ekspertMeshRotate {
  to { transform: rotate(360deg); }
}

@keyframes ekspertSpin {
  to { transform: rotate(360deg); }
}

/* Buttons - 3D Volume */
.ekspert-btn {
  appearance: none;
  border: 1px solid var(--ekspert-border);
  background: var(--ekspert-card-base);
  backdrop-filter: blur(10px);
  color: var(--ekspert-text-primary);
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 var(--ekspert-depth-1) var(--ekspert-depth-2) var(--ekspert-shadow-ambient),
    inset 0 -2px 4px rgba(0, 0, 0, 0.1),
    inset 0 2px 4px var(--ekspert-highlight-top);
  transform: perspective(500px) rotateX(0deg);
  position: relative;
  overflow: hidden;
}

.ekspert-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(107, 141, 214, 0.12), transparent);
  transition: left 0.6s ease;
}

.ekspert-btn:hover::before {
  left: 100%;
}

.ekspert-btn:hover {
  transform: perspective(500px) rotateX(-5deg) translateY(-4px);
  border-color: var(--ekspert-primary);
  box-shadow: 
    0 var(--ekspert-depth-3) var(--ekspert-depth-4) var(--ekspert-shadow-primary),
    inset 0 -2px 4px rgba(0, 0, 0, 0.1),
    inset 0 2px 4px var(--ekspert-highlight-top),
    0 0 20px var(--ekspert-shadow-lift);
}

.ekspert-btn--primary {
  background: linear-gradient(135deg, var(--ekspert-primary), var(--ekspert-primary-light));
  color: var(--ekspert-bg-primary);
  border: none;
  box-shadow: 
    0 var(--ekspert-depth-2) var(--ekspert-depth-3) var(--ekspert-shadow-primary),
    inset 0 -3px 6px rgba(0, 0, 0, 0.1),
    inset 0 3px 6px var(--ekspert-highlight-top),
    0 0 16px var(--ekspert-shadow-lift);
}

.ekspert-btn--primary:hover {
  box-shadow: 
    0 var(--ekspert-depth-4) var(--ekspert-depth-5) var(--ekspert-shadow-primary),
    inset 0 -3px 6px rgba(0, 0, 0, 0.1),
    inset 0 3px 6px var(--ekspert-highlight-top),
    0 0 28px var(--ekspert-shadow-lift);
  filter: brightness(1.1);
}

/* Section Base */
.ekspert-section {
  padding-block: 5rem;
  position: relative;
}

.ekspert-section--alt {
  background: 
    radial-gradient(ellipse 1000px 500px at 15% 50%, rgba(107, 141, 214, 0.03), transparent 60%),
    radial-gradient(ellipse 900px 450px at 85% 50%, rgba(168, 197, 160, 0.02), transparent 60%),
    var(--ekspert-bg-secondary);
}

.ekspert-section__head {
  text-align: center;
  margin-bottom: 3rem;
}

.ekspert-section__head h2 {
  font-size: var(--ekspert-font-size-h2);
  font-weight: 800;
  margin: 0 0 1rem;
  text-shadow: 0 var(--ekspert-depth-1) var(--ekspert-depth-2) var(--ekspert-shadow-ambient);
}

.ekspert-section__head p {
  color: var(--ekspert-text-muted);
  font-size: clamp(1rem, 1.2vw + 0.5rem, 1.25rem);
  max-width: 65ch;
  margin: 0 auto;
}

.ekspert-section__eyebrow {
  display: block;
  color: var(--ekspert-primary);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

/* Grid System */
.ekspert-grid {
  display: grid; 
  gap: 2rem; 
}

.ekspert-grid--cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.ekspert-grid--cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

/* 3D Tiles - Glassmorphism 2.0 */
.ekspert-tiles-3d {
  margin-top: 2rem;
}

.ekspert-tile-3d {
  background: var(--ekspert-card-base);
  backdrop-filter: blur(20px);
  border: 1px solid var(--ekspert-border);
  border-radius: 20px;
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 var(--ekspert-depth-2) var(--ekspert-depth-3) var(--ekspert-shadow-ambient),
    0 0 1px rgba(217, 119, 6, 0.2),
    inset 0 -3px 6px rgba(0, 0, 0, 0.2),
    inset 0 3px 6px var(--ekspert-highlight-top);
  transform: perspective(1000px) rotateX(0deg) rotateY(0deg);
}

.ekspert-tile-3d::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--ekspert-primary), var(--ekspert-accent));
  transform: scaleX(0);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.ekspert-tile-3d:hover {
  transform: perspective(1000px) rotateX(-5deg) rotateY(2deg) translateY(-8px);
  border-color: var(--ekspert-primary);
  box-shadow: 
    0 var(--ekspert-depth-4) var(--ekspert-depth-5) var(--ekspert-shadow-primary),
    0 0 2px rgba(217, 119, 6, 0.4),
    inset 0 -3px 6px rgba(0, 0, 0, 0.2),
    inset 0 3px 6px var(--ekspert-highlight-top),
    0 0 32px var(--ekspert-shadow-lift);
}

.ekspert-tile-3d:hover::before {
  transform: scaleX(1);
}

.ekspert-tile-3d__icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--ekspert-primary), var(--ekspert-accent));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ekspert-bg-primary);
  margin-bottom: 1.5rem;
  box-shadow: 
    0 var(--ekspert-depth-2) var(--ekspert-depth-3) var(--ekspert-shadow-primary),
    inset 0 -2px 4px rgba(0, 0, 0, 0.1),
    inset 0 2px 4px var(--ekspert-highlight-top),
    0 0 12px var(--ekspert-shadow-lift);
  transform: perspective(500px) rotateX(-8deg);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.ekspert-tile-3d__icon svg {
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.4));
}

.ekspert-tile-3d:hover .ekspert-tile-3d__icon {
  transform: perspective(500px) rotateX(0deg) rotateY(5deg) scale(1.1);
  box-shadow: 
    0 var(--ekspert-depth-3) var(--ekspert-depth-4) var(--ekspert-shadow-primary),
    inset 0 -2px 4px rgba(0, 0, 0, 0.1),
    inset 0 2px 4px var(--ekspert-highlight-top),
    0 0 20px var(--ekspert-shadow-lift);
}

.ekspert-tile-3d h3 {
  font-size: var(--ekspert-font-size-h3);
  font-weight: 700;
  margin: 0 0 1rem;
  color: var(--ekspert-text-primary);
}

.ekspert-tile-3d p {
  color: var(--ekspert-text-muted);
  line-height: 1.7;
  margin: 0 0 1.5rem;
}

.ekspert-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.ekspert-list li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--ekspert-text-muted);
  font-size: 0.95rem;
}

.ekspert-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--ekspert-primary), var(--ekspert-accent));
  box-shadow: 0 0 8px var(--ekspert-primary);
}

.ekspert-list--bullets li::before {
  border-radius: 2px;
  width: 8px;
  height: 2px;
}

/* Expertise Section */
.ekspert-expertise__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.ekspert-expertise__category {
  background: var(--ekspert-card-base);
  backdrop-filter: blur(20px);
  border: 1px solid var(--ekspert-border);
  border-radius: 20px;
  padding: 2rem; 
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 var(--ekspert-depth-2) var(--ekspert-depth-3) var(--ekspert-shadow-ambient),
    inset 0 -3px 6px rgba(0, 0, 0, 0.2),
    inset 0 3px 6px var(--ekspert-highlight-top);
  transform: perspective(800px) rotateX(0deg);
}

.ekspert-expertise__category:hover {
  transform: perspective(800px) rotateX(-3deg) translateY(-6px);
  border-color: var(--ekspert-primary);
  box-shadow: 
    0 var(--ekspert-depth-4) var(--ekspert-depth-5) var(--ekspert-shadow-primary),
    inset 0 -3px 6px rgba(0, 0, 0, 0.2),
    inset 0 3px 6px var(--ekspert-highlight-top),
    0 0 24px var(--ekspert-shadow-lift);
}

.ekspert-expertise__category h3 {
  margin: 0 0 1.5rem; 
  font-size: 1.25rem; 
  font-weight: 700;
  text-align: center;
  color: var(--ekspert-text-primary);
}

.ekspert-expertise__items {
  display: flex; 
  flex-wrap: wrap; 
  gap: 0.75rem;
  justify-content: center;
}

.ekspert-expertise__item {
  padding: 0.5rem 1rem;
  background: rgba(107, 141, 214, 0.08);
  border: 1px solid rgba(107, 141, 214, 0.2);
  border-radius: 999px; 
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ekspert-text-muted);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 var(--ekspert-depth-1) var(--ekspert-depth-2) var(--ekspert-shadow-ambient),
    inset 0 -1px 2px rgba(0, 0, 0, 0.08),
    inset 0 1px 2px var(--ekspert-highlight-top);
  opacity: 0;
  transform: translateY(8px);
  animation: ekspertItemReveal 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: calc(var(--delay, 0ms) + 200ms);
}

.ekspert-expertise__item:hover {
  background: rgba(107, 141, 214, 0.15);
  border-color: var(--ekspert-primary);
  transform: translateY(-2px);
  box-shadow: 
    0 var(--ekspert-depth-2) var(--ekspert-depth-3) var(--ekspert-shadow-primary),
    inset 0 -1px 2px rgba(0, 0, 0, 0.08),
    inset 0 1px 2px var(--ekspert-highlight-top),
    0 0 12px var(--ekspert-shadow-lift);
  color: var(--ekspert-text-primary);
}

@keyframes ekspertItemReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Process Cards */
.ekspert-process__cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.ekspert-process__card {
  background: var(--ekspert-card-base);
  backdrop-filter: blur(20px);
  border: 1px solid var(--ekspert-border);
  border-radius: 20px;
  padding: 2rem;
  display: flex;
  gap: 1.5rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 var(--ekspert-depth-2) var(--ekspert-depth-3) var(--ekspert-shadow-ambient),
    inset 0 -3px 6px rgba(0, 0, 0, 0.2),
    inset 0 3px 6px var(--ekspert-highlight-top);
  transform: perspective(1000px) rotateX(0deg);
}

.ekspert-process__card:hover {
  transform: perspective(1000px) rotateX(-5deg) translateY(-8px);
  border-color: var(--ekspert-primary);
  box-shadow: 
    0 var(--ekspert-depth-4) var(--ekspert-depth-5) var(--ekspert-shadow-primary),
    inset 0 -3px 6px rgba(0, 0, 0, 0.2),
    inset 0 3px 6px var(--ekspert-highlight-top),
    0 0 32px var(--ekspert-shadow-lift);
}

.ekspert-process__card-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, var(--ekspert-primary), var(--ekspert-accent));
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ekspert-bg-primary);
  flex-shrink: 0;
  box-shadow: 
    0 var(--ekspert-depth-2) var(--ekspert-depth-3) var(--ekspert-shadow-primary),
    inset 0 -3px 6px rgba(0, 0, 0, 0.3),
    inset 0 3px 6px var(--ekspert-highlight-top),
    0 0 16px var(--ekspert-shadow-lift);
  transform: perspective(600px) rotateX(-8deg) rotateY(-3deg);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.ekspert-process__card:hover .ekspert-process__card-icon {
  transform: perspective(600px) rotateX(0deg) rotateY(0deg) scale(1.1);
}

.ekspert-process__card-content h3 {
  margin: 0 0 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ekspert-text-primary);
}

.ekspert-process__card-content p {
  margin: 0;
  color: var(--ekspert-text-muted);
  line-height: 1.7;
}

/* Solutions Grid */
.ekspert-solutions__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.ekspert-solution-card {
  background: var(--ekspert-card-base);
  backdrop-filter: blur(20px);
  border: 1px dashed var(--ekspert-border);
  border-radius: 20px;
  padding: 2rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 var(--ekspert-depth-1) var(--ekspert-depth-2) var(--ekspert-shadow-ambient),
    inset 0 -2px 4px rgba(0, 0, 0, 0.2),
    inset 0 2px 4px var(--ekspert-highlight-top);
  transform: perspective(800px) rotateX(0deg);
}

.ekspert-solution-card:hover {
  transform: perspective(800px) rotateX(-4deg) translateY(-6px);
  border-color: var(--ekspert-primary);
  border-style: solid;
  box-shadow: 
    0 var(--ekspert-depth-3) var(--ekspert-depth-4) var(--ekspert-shadow-primary),
    inset 0 -2px 4px rgba(0, 0, 0, 0.2),
    inset 0 2px 4px var(--ekspert-highlight-top),
    0 0 24px var(--ekspert-shadow-lift);
}

.ekspert-solution-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ekspert-text-primary);
}

.ekspert-solution-card p {
  margin: 0 0 1.5rem;
  color: var(--ekspert-text-muted);
  line-height: 1.7;
}

.ekspert-solution-card__meta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.ekspert-solution-card__meta span {
  padding: 0.35rem 0.75rem;
  background: rgba(107, 141, 214, 0.1);
  border: 1px solid rgba(107, 141, 214, 0.25);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--ekspert-text-muted);
}

/* Stats Section */
.ekspert-stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.ekspert-stat-item {
  background: var(--ekspert-card-base);
  backdrop-filter: blur(20px);
  border: 1px solid var(--ekspert-border);
  border-radius: 20px;
  padding: 2rem;
  text-align: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 var(--ekspert-depth-2) var(--ekspert-depth-3) var(--ekspert-shadow-ambient),
    inset 0 -3px 6px rgba(0, 0, 0, 0.2),
    inset 0 3px 6px var(--ekspert-highlight-top);
  transform: perspective(600px) rotateX(0deg);
}

.ekspert-stat-item:hover {
  transform: perspective(600px) rotateX(-3deg) translateY(-6px);
  border-color: var(--ekspert-primary);
  box-shadow: 
    0 var(--ekspert-depth-4) var(--ekspert-depth-5) var(--ekspert-shadow-primary),
    inset 0 -3px 6px rgba(0, 0, 0, 0.2),
    inset 0 3px 6px var(--ekspert-highlight-top),
    0 0 24px var(--ekspert-shadow-lift);
}

.ekspert-stat-number {
  display: block;
  font-size: clamp(2rem, 4vw + 1rem, 3rem);
  font-weight: 900;
  background: linear-gradient(135deg, var(--ekspert-primary), var(--ekspert-accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 0.5rem;
  text-shadow: 0 0 20px rgba(107, 141, 214, 0.2);
}

.ekspert-stat-label {
  display: block;
  color: var(--ekspert-text-muted);
  font-size: 0.95rem;
}

/* Why Us Section */
.ekspert-why__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.ekspert-why__card {
  background: var(--ekspert-card-base);
  backdrop-filter: blur(20px);
  border: 1px solid var(--ekspert-border);
  border-radius: 20px;
  padding: 2rem;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow:
    0 var(--ekspert-depth-2) var(--ekspert-depth-3) var(--ekspert-shadow-ambient),
    inset 0 -3px 6px rgba(0, 0, 0, 0.2),
    inset 0 3px 6px var(--ekspert-highlight-top);
  transform: perspective(800px) rotateX(0deg);
}

.ekspert-why__card:hover {
  transform: perspective(800px) rotateX(-4deg) translateY(-8px);
  border-color: var(--ekspert-primary);
  box-shadow:
    0 var(--ekspert-depth-4) var(--ekspert-depth-5) var(--ekspert-shadow-primary),
    inset 0 -3px 6px rgba(0, 0, 0, 0.2),
    inset 0 3px 6px var(--ekspert-highlight-top),
    0 0 28px var(--ekspert-shadow-lift);
}

.ekspert-why__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  background: linear-gradient(135deg, var(--ekspert-primary), var(--ekspert-accent));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ekspert-bg-primary);
  box-shadow:
    0 var(--ekspert-depth-2) var(--ekspert-depth-3) var(--ekspert-shadow-primary),
    inset 0 -2px 4px rgba(0, 0, 0, 0.15),
    inset 0 2px 4px var(--ekspert-highlight-top);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.ekspert-why__card:hover .ekspert-why__icon {
  transform: scale(1.08);
  box-shadow:
    0 var(--ekspert-depth-3) var(--ekspert-depth-4) var(--ekspert-shadow-primary),
    0 0 20px var(--ekspert-shadow-lift);
}

.ekspert-why__card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ekspert-text-primary);
}

.ekspert-why__card p {
  margin: 0;
  color: var(--ekspert-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Testimonials Section */
.ekspert-section--testimonials {
  background:
    radial-gradient(ellipse 1200px 600px at 50% 0%, rgba(107, 141, 214, 0.04), transparent 55%),
    var(--ekspert-bg-primary);
}

.ekspert-testimonials__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.ekspert-testimonial {
  margin: 0;
  background: var(--ekspert-card-base);
  backdrop-filter: blur(20px);
  border: 1px solid var(--ekspert-border);
  border-radius: 20px;
  padding: 2.5rem;
  position: relative;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow:
    0 var(--ekspert-depth-2) var(--ekspert-depth-3) var(--ekspert-shadow-ambient),
    inset 0 -3px 6px rgba(0, 0, 0, 0.2),
    inset 0 3px 6px var(--ekspert-highlight-top);
  transform: perspective(800px) rotateX(0deg);
}

.ekspert-testimonial::before {
  content: '"';
  position: absolute;
  top: 1.25rem;
  left: 1.5rem;
  font-size: 3rem;
  font-weight: 800;
  color: var(--ekspert-primary);
  opacity: 0.25;
  line-height: 1;
}

.ekspert-testimonial:hover {
  transform: perspective(800px) rotateX(-3deg) translateY(-6px);
  border-color: var(--ekspert-primary);
  box-shadow:
    0 var(--ekspert-depth-4) var(--ekspert-depth-5) var(--ekspert-shadow-primary),
    0 0 24px var(--ekspert-shadow-lift);
}

.ekspert-testimonial__quote {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--ekspert-text-primary);
  margin-bottom: 1.5rem;
  padding-left: 1rem;
  font-style: italic;
}

.ekspert-testimonial__footer {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--ekspert-border);
}

.ekspert-testimonial__author {
  font-weight: 600;
  color: var(--ekspert-text-primary);
  font-size: 0.95rem;
}

.ekspert-testimonial__role {
  font-size: 0.85rem;
  color: var(--ekspert-text-muted);
}

/* CTA Banner */
.ekspert-cta-banner {
  padding-block: 4rem;
  position: relative;
}

.ekspert-cta-banner .ekspert-shell {
  padding-block: 0;
}

.ekspert-cta-banner__inner {
  border-radius: 22px;
  background: var(--ekspert-card-base);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(107, 141, 214, 0.3);
  padding: 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  box-shadow:
    0 var(--ekspert-depth-3) var(--ekspert-depth-4) var(--ekspert-shadow-primary),
    inset 0 -4px 8px rgba(0, 0, 0, 0.1),
    inset 0 4px 8px var(--ekspert-highlight-top),
    0 0 40px rgba(107, 141, 214, 0.12);
}

.ekspert-cta-banner__content {
  flex: 1;
  min-width: 0; /* дозволяє флекс-елементу стискатися і не виходити за межі */
  max-width: 100%;
}

.ekspert-cta-banner__title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 2.5vw + 0.5rem, 2rem);
  font-weight: 800;
  color: var(--ekspert-text-primary);
  overflow-wrap: break-word;
  word-wrap: break-word;
  word-break: break-word;
}

.ekspert-cta-banner__sub {
  margin: 0;
  color: var(--ekspert-text-muted);
  font-size: 1.05rem;
  overflow-wrap: break-word;
  word-wrap: break-word;
}

.ekspert-cta-banner__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.ekspert-btn--large {
  padding: 1rem 2rem;
  font-size: 1.05rem;
}

.ekspert-btn--outline {
  background: transparent;
  border: 2px solid var(--ekspert-primary);
  color: var(--ekspert-primary);
}

.ekspert-btn--outline:hover {
  background: rgba(107, 141, 214, 0.12);
  color: var(--ekspert-primary-light);
}

/* About Section */
.ekspert-about__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

.ekspert-card-glass {
  background: var(--ekspert-card-base);
  backdrop-filter: blur(20px);
  border: 1px solid var(--ekspert-border);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: 
    0 var(--ekspert-depth-2) var(--ekspert-depth-3) var(--ekspert-shadow-ambient),
    0 0 1px rgba(217, 119, 6, 0.2),
    inset 0 -3px 6px rgba(0, 0, 0, 0.2),
    inset 0 3px 6px var(--ekspert-highlight-top);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.ekspert-card-glass:hover {
  border-color: var(--ekspert-primary);
  box-shadow: 
    0 var(--ekspert-depth-3) var(--ekspert-depth-4) var(--ekspert-shadow-primary),
    0 0 2px rgba(217, 119, 6, 0.4),
    inset 0 -3px 6px rgba(0, 0, 0, 0.2),
    inset 0 3px 6px var(--ekspert-highlight-top),
    0 0 24px var(--ekspert-shadow-lift);
}

.ekspert-about__intro h3,
.ekspert-about__card h3 {
  margin: 0 0 1rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ekspert-text-primary);
}

.ekspert-about__intro p,
.ekspert-about__card p {
  color: var(--ekspert-text-muted);
  line-height: 1.7;
  margin: 0 0 1rem;
}

.ekspert-facts {
  display: grid;
  gap: 1rem;
  margin: 0;
}

.ekspert-facts dt {
  color: var(--ekspert-text-muted);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}

.ekspert-facts dd {
  margin: 0;
  color: var(--ekspert-text-primary);
}

.ekspert-contacts {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.ekspert-contacts span {
  color: var(--ekspert-text-muted);
  margin-right: 0.5rem;
  font-weight: 600;
}

.ekspert-contacts a {
  color: var(--ekspert-primary);
  text-decoration: none;
  border-bottom: 1px dotted rgba(107, 141, 214, 0.4);
  transition: all 0.3s ease;
}

.ekspert-contacts a:hover {
  border-bottom-style: solid;
  color: var(--ekspert-accent);
  text-shadow: 0 0 8px rgba(168, 197, 160, 0.3);
}

/* Contact Section */
.ekspert-section--contact {
  position: relative;
}

.ekspert-contact__wrap {
  position: relative;
  border-radius: 24px;
  padding: 2px;
  background: linear-gradient(135deg, rgba(107, 141, 214, 0.2), rgba(168, 197, 160, 0.15));
  margin-top: 2rem;
}

.ekspert-contact__bg {
  position: absolute;
  inset: 0;
  border-radius: 24px;
  background: 
    radial-gradient(ellipse 800px 400px at 15% 0%, rgba(107, 141, 214, 0.05), transparent 60%),
    radial-gradient(ellipse 700px 350px at 85% 100%, rgba(168, 197, 160, 0.04), transparent 60%),
    var(--ekspert-bg-primary);
  filter: saturate(1.1);
}

.ekspert-contact {
  position: relative;
  background: var(--ekspert-card-base);
  backdrop-filter: blur(20px);
  border-radius: 22px;
  padding: 2.5rem;
  box-shadow: 
    0 var(--ekspert-depth-3) var(--ekspert-depth-4) var(--ekspert-shadow-primary),
    inset 0 -4px 8px rgba(0, 0, 0, 0.08),
    inset 0 4px 8px var(--ekspert-highlight-top);
}

.ekspert-field {
  display: grid;
  gap: 0.5rem;
}

.ekspert-field span {
  color: var(--ekspert-text-muted);
  font-weight: 600;
  font-size: 0.9rem;
}

.ekspert-field input,
.ekspert-field select,
.ekspert-field textarea {
  width: 100%;
  padding: 0.875rem 1.125rem;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  color: var(--ekspert-text-primary);
  border: 1px solid var(--ekspert-border);
  border-radius: 12px;
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    inset 0 -2px 4px rgba(0, 0, 0, 0.2),
    inset 0 2px 4px var(--ekspert-highlight-top);
}

.ekspert-field input:focus,
.ekspert-field select:focus,
.ekspert-field textarea:focus {
  outline: none;
  border-color: var(--ekspert-primary);
  box-shadow: 
    inset 0 -2px 4px rgba(0, 0, 0, 0.2),
    inset 0 2px 4px var(--ekspert-highlight-top),
     0 0 0 3px rgba(107, 141, 214, 0.15),
    0 0 16px var(--ekspert-shadow-lift);
}

.ekspert-field textarea {
  resize: vertical;
  min-height: 120px;
}

.ekspert-field--full {
  grid-column: 1 / -1;
}

.ekspert-contact__actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

/* Footer */
.ekspert-footer {
  border-top: 1px solid var(--ekspert-border);
  padding-block: 3rem;
  background: var(--ekspert-bg-secondary);
  box-shadow: 
    0 -2px 8px var(--ekspert-shadow-ambient),
    inset 0 2px 4px var(--ekspert-highlight-top);
}

.ekspert-footer .ekspert-shell {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 2rem;
}

.ekspert-footer__brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  color: var(--ekspert-text-primary);
}

.ekspert-footer .ekspert-logo {
  width: 40px;
  height: 40px;
  font-size: 0.9rem;
}

.ekspert-footer__nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.ekspert-footer__nav a {
  color: var(--ekspert-text-muted);
  text-decoration: none;
  transition: color 0.3s ease;
}

.ekspert-footer__nav a:hover {
  color: var(--ekspert-text-primary);
}

.ekspert-footer__meta {
  color: var(--ekspert-text-muted);
  font-size: 0.9rem;
}

/* Inner page content (About, Contact, Privacy) */
.ekspert-page-content {
  max-width: 65ch;
  margin: 0 auto;
}

.ekspert-page-content h1 {
  font-size: var(--ekspert-font-size-h2);
  font-weight: 800;
  margin: 0 0 1rem;
}

.ekspert-lead {
  color: var(--ekspert-text-muted);
  font-size: 1.15rem;
  margin-bottom: 1.5rem;
}

.ekspert-page-content .ekspert-contacts {
  margin-bottom: 1.5rem;
}

.ekspert-placeholder {
  min-height: 2rem;
}

/* Reveal Animation */
.reveal {
  opacity: 0;
  transform: translateY(20px);
}

[data-anim="stagger"].in .reveal {
  animation: ekspertRise 0.8s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
  animation-delay: var(--d, 0ms);
}

@keyframes ekspertRise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .ekspert-hero__grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .ekspert-about__grid {
    grid-template-columns: 1fr;
  }
  
  .ekspert-stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .ekspert-why__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 800px) {
  .ekspert-nav__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--ekspert-border);
    background: var(--ekspert-card-base);
    backdrop-filter: blur(10px);
    color: var(--ekspert-text-primary);
    padding: 0.5rem 1rem;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
  }
  
  .ekspert-nav__list {
    position: fixed;
    inset: 80px 1.5rem auto 1.5rem;
    background: var(--ekspert-card-base);
    backdrop-filter: blur(20px);
    border: 1px solid var(--ekspert-border);
    border-radius: 16px;
    padding: 1rem;
    gap: 0.75rem;
    display: grid;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    box-shadow: 
      0 var(--ekspert-depth-3) var(--ekspert-depth-4) var(--ekspert-shadow-primary),
      inset 0 -3px 6px rgba(0, 0, 0, 0.2),
      inset 0 3px 6px var(--ekspert-highlight-top);
  }
  
  .ekspert-nav__list[data-open="1"] {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  
  .ekspert-grid--cols-2,
  .ekspert-grid--cols-3 {
    grid-template-columns: 1fr;
  }
  
  .ekspert-process__cards {
    grid-template-columns: 1fr;
  }
  
  .ekspert-expertise__grid {
    grid-template-columns: 1fr;
  }
  
  .ekspert-solutions__grid {
    grid-template-columns: 1fr;
  }
  
  .ekspert-stats__grid {
    grid-template-columns: 1fr;
  }
  
  .ekspert-why__grid {
    grid-template-columns: 1fr;
  }
  
  .ekspert-testimonials__grid {
    grid-template-columns: 1fr;
  }
  
  .ekspert-cta-banner__inner {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem 1.25rem;
  }
  
  .ekspert-cta-banner__content {
    width: 100%;
  }
  
  .ekspert-cta-banner__title {
    font-size: clamp(1.25rem, 5vw + 0.5rem, 1.75rem);
    line-height: 1.25;
  }
  
  .ekspert-cta-banner__sub {
    font-size: 0.95rem;
  }
  
  .ekspert-cta-banner__actions {
    justify-content: center;
    width: 100%;
    flex-direction: column;
  }
  
  .ekspert-cta-banner__actions .ekspert-btn {
    width: 100%;
    text-align: center;
    box-sizing: border-box;
  }
  
  .ekspert-footer .ekspert-shell {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 1.5rem;
  }
  
  .ekspert-footer__nav {
    justify-content: center;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  .ekspert-orb-3d,
  .ekspert-mesh-3d,
  .ekspert-rings-3d span,
  .ekspert-badge-item,
  .ekspert-expertise__item,
  * {
    animation: none !important;
    transition: none !important;
  }
}