/* ----------------------------------------------------
   IMAGE Corporate Website - CSS Style Sheet
   Bespoke Premium Dark Minimalist Theme
---------------------------------------------------- */

/* --- 1. Custom Properties (Design System) --- */
:root {
  --bg-primary: #071225;
  --bg-secondary: #0D1830;
  --accent: #4DA3FF;
  --accent-secondary: #66D9FF;
  --accent-glow: rgba(77, 163, 255, 0.18);
  
  --text-white: #FFFFFF;
  --text-secondary: #B0BFD0;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(77, 163, 255, 0.35);
  
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-accent: 'Manrope', sans-serif;
  
  --transition-smooth: all 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.25s ease;
  
  --glass-bg: rgba(13, 24, 48, 0.65);
  --glass-blur: blur(20px);
  --glass-border: 1px solid var(--border-color);
  
  --container-max-width: 1240px;
  --header-height: 85px;
}

/* --- 2. CSS Reset & Base Styles --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  font-family: var(--font-main);
  line-height: 1.7;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-white);
  font-family: var(--font-accent);
  font-weight: 700;
  line-height: 1.25;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

button, input, textarea, select {
  font-family: inherit;
  background: none;
  border: none;
  outline: none;
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

/* --- 3. Preloader Screen --- */
.site-preloader {
  position: fixed;
  inset: 0;
  background-color: var(--bg-primary);
  z-index: 99999;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.6s;
}

.site-preloader.fade-out {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.preloader-ring {
  position: absolute;
  top: -20px;
  left: -20px;
  right: -20px;
  bottom: -20px;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--accent);
  border-right-color: var(--accent-secondary);
  animation: preloaderSpin 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
  box-shadow: 0 0 30px rgba(77, 163, 255, 0.3);
}

.preloader-logo {
  animation: logoBreath 2s infinite ease-in-out;
}

.preloader-text {
  font-family: var(--font-accent);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  color: var(--text-white);
}

/* --- 4. Layout & Utilities --- */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 2.2rem;
  padding-right: 2.2rem;
}

.text-center {
  text-align: center;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.accent-line {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  border-radius: 2px;
  margin-top: 1rem;
  margin-bottom: 2rem;
}

.section-title {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  position: relative;
  letter-spacing: -0.02em;
}

.subtitle-tag {
  display: block;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 0.6rem;
  font-weight: 600;
}

.section-subtitle-text {
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 4.5rem;
  font-size: 1.12rem;
  line-height: 1.7;
}

/* Skip Link for Accessibility */
.skip-link {
  position: fixed;
  top: -100px;
  left: 20px;
  background: var(--accent);
  color: var(--bg-primary);
  padding: 0.8rem 1.5rem;
  font-weight: 600;
  border-radius: 4px;
  z-index: 9999;
  transition: top 0.3s;
}

.skip-link:focus {
  top: 20px;
}

/* --- 5. Ambient & Multi-layered Glow Backgrounds --- */
.ambient-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(150px);
  z-index: -2;
  pointer-events: none;
  opacity: 0.35;
}

.glow-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(77, 163, 255, 0.35) 0%, rgba(7, 18, 37, 0) 70%);
  top: -150px;
  right: -80px;
}

.glow-2 {
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, rgba(102, 217, 255, 0.25) 0%, rgba(7, 18, 37, 0) 70%);
  top: 45%;
  left: -220px;
}

.glow-3 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(77, 163, 255, 0.3) 0%, rgba(7, 18, 37, 0) 70%);
  bottom: -120px;
  right: -100px;
}

/* --- 6. Navigation Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: var(--transition-smooth);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background-color: rgba(7, 18, 37, 0.88);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  height: 72px;
  border-bottom: var(--glass-border);
}

.site-header.hide {
  transform: translateY(-100%);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.logo-svg-icon {
  transition: var(--transition-smooth);
  animation: logoBreath 5s ease-in-out infinite;
}

.logo-link:hover .logo-svg-icon {
  transform: scale(1.08) rotate(3deg);
  filter: drop-shadow(0 0 12px rgba(102, 217, 255, 0.85));
}

.logo-text {
  font-family: var(--font-accent);
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--text-white);
  background: linear-gradient(135deg, var(--text-white) 60%, var(--accent-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-white);
}

.nav-link:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* Buttons Styles & Sheen */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.85rem 1.9rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.btn .arrow-icon {
  transition: transform 0.3s ease;
}

.btn:hover .arrow-icon {
  transform: translateX(4px);
}

.btn-header {
  padding: 0.65rem 1.3rem;
  font-size: 0.88rem;
  background-color: var(--glass-bg);
  border: var(--glass-border);
  color: var(--text-white);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-secondary) 100%);
  color: var(--bg-primary);
  border: 1px solid transparent;
  box-shadow: 0 4px 15px rgba(77, 163, 255, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(77, 163, 255, 0.4);
}

.btn-secondary {
  background-color: var(--glass-bg);
  border: var(--glass-border);
  color: var(--text-white);
  backdrop-filter: var(--glass-blur);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.btn-glow::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: skewX(-20deg);
  transition: left 0.75s ease;
}

.btn-glow:hover::before {
  left: 150%;
}

.btn-block {
  width: 100%;
}

/* Mobile Toggle */
.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  cursor: pointer;
  z-index: 1010;
}

.mobile-nav-toggle .bar {
  width: 100%;
  height: 2px;
  background-color: var(--text-white);
  transition: var(--transition-fast);
}

/* --- 7. Hero Section --- */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: calc(var(--header-height) + 2rem);
  padding-bottom: 7rem;
  overflow: hidden;
}

.hero-canvas-wrapper {
  position: absolute;
  inset: 0;
  z-index: -1;
}

#hero-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  align-items: center;
  gap: 3rem;
  width: 100%;
  margin-bottom: 5rem;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  z-index: 2;
}

.glow-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(77, 163, 255, 0.08);
  border: 1px solid rgba(77, 163, 255, 0.25);
  color: var(--accent-secondary);
  padding: 0.45rem 1.2rem;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 2rem;
  box-shadow: 0 0 20px rgba(77, 163, 255, 0.1);
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulseDot 2s infinite;
}

.hero-title {
  font-size: 3.7rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 2.2rem;
  line-height: 1.15;
}

.hero-subtitle {
  font-size: 1.18rem;
  color: var(--text-secondary);
  margin-bottom: 3.4rem;
  max-width: 540px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 1.5rem;
}

/* ----------------------------------------------------
   Hero Visual: Generative Digital Energy Canvas
---------------------------------------------------- */
.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 1;
  min-height: 480px;
}

#hero-orb {
  width: 560px;
  height: 560px;
  border-radius: 50%;
}

/* Tooltips for Network Nodes */
.node-tooltip {
  position: absolute;
  bottom: -32px;
  left: 50%;
  transform: translateX(-50%) translateY(5px);
  background: var(--bg-primary);
  border: 1px solid var(--accent);
  color: var(--text-white);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  box-shadow: 0 5px 20px rgba(0,0,0,0.6);
}

.network-node:hover .node-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Quick Feature Pill Bar */
.hero-features-bar {
  width: 100%;
  margin-top: 1rem;
  z-index: 2;
}

.features-bar-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.feature-pill {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: 14px;
  padding: 1.1rem 1.3rem;
  transition: var(--transition-smooth);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.feature-pill:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.pill-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.pill-info {
  display: flex;
  flex-direction: column;
}

.pill-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-white);
}

.pill-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Scroll down mouse indicator */
.scroll-down-indicator {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--text-secondary);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
  opacity: 0.7;
  transition: var(--transition-fast);
}

.mouse:hover {
  opacity: 1;
  border-color: var(--accent);
}

.wheel {
  width: 4px;
  height: 8px;
  background-color: var(--accent);
  border-radius: 2px;
  animation: scrollWheel 2s infinite;
}

/* --- 8. About Section --- */
.about-section {
  padding: 10rem 0;
  position: relative;
}

.section-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 6rem;
}

.about-lead {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-white);
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.about-text {
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.about-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.glass-container-3d {
  position: relative;
  width: 100%;
  max-width: 380px;
  height: 380px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

.interactive-glow-sphere {
  width: 220px;
  height: 220px;
  position: relative;
}

.sphere-svg {
  width: 100%;
  height: 100%;
}

.orbit-1 {
  transform-origin: 50% 50%;
  animation: rotateClockwise 25s linear infinite;
}

.orbit-2 {
  transform-origin: 50% 50%;
  animation: rotateCounterClockwise 35s linear infinite;
}

.stats-card {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  background: rgba(7, 18, 37, 0.9);
  backdrop-filter: blur(12px);
  border: var(--glass-border);
  padding: 1.1rem 1.6rem;
  border-radius: 14px;
  text-align: center;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
  max-width: 190px;
}

.stats-num {
  font-size: 2.3rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stats-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- 9. Services Section --- */
.services-section {
  padding: 10rem 0;
  position: relative;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.2rem;
}

.service-card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: 18px;
  overflow: hidden;
  transition: border-color 0.5s ease, transform 0.4s ease;
  z-index: 1;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.3), inset 0 1px 1px rgba(255, 255, 255, 0.08);
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(350px circle at var(--mouse-x, 0) var(--mouse-y, 0), rgba(77, 163, 255, 0.09), transparent 50%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
  z-index: -1;
}

.service-card:hover::before {
  opacity: 1;
}

.service-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-5px);
  box-shadow: 0 25px 55px rgba(0, 0, 0, 0.4);
}

.card-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(77, 163, 255, 0.04) 0%, rgba(102, 217, 255, 0.0) 60%);
  pointer-events: none;
}

.card-content {
  padding: 3.2rem 2.4rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  height: 100%;
}

.service-icon {
  width: 64px;
  height: 64px;
  background: rgba(77, 163, 255, 0.06);
  border: 1px solid rgba(77, 163, 255, 0.18);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 2rem;
  transition: var(--transition-smooth);
}

.service-card:hover .service-icon {
  background: rgba(77, 163, 255, 0.16);
  border-color: var(--accent);
  box-shadow: 0 0 25px rgba(77, 163, 255, 0.25);
  transform: scale(1.06);
}

.card-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.card-text {
  font-size: 0.98rem;
  color: var(--text-secondary);
  margin-bottom: 2.2rem;
  flex-grow: 1;
  line-height: 1.7;
}

.card-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.card-link .arrow {
  transition: transform 0.3s ease;
}

.service-card:hover .card-link .arrow {
  transform: translateX(5px);
}

.service-card:hover .card-link {
  color: var(--text-white);
  text-shadow: 0 0 10px rgba(102, 217, 255, 0.4);
}

/* --- 10. Our Approach Section --- */
.approach-section {
  padding: 10rem 0;
  position: relative;
}

.approach-wrapper {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 5rem;
  align-items: center;
}

.approach-lead {
  font-size: 1.45rem;
  color: var(--text-white);
  font-weight: 600;
  line-height: 1.55;
  margin-bottom: 1.8rem;
}

.approach-text {
  margin-bottom: 3rem;
  font-size: 1.05rem;
  line-height: 1.8;
}

.approach-steps-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.step-nav-item {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 0.85rem 1.3rem;
  border-radius: 12px;
  background-color: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-smooth);
  position: relative;
}

.step-nav-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0;
  background: linear-gradient(180deg, var(--accent), var(--accent-secondary));
  border-radius: 2px;
  transition: var(--transition-smooth);
}

.step-nav-item.active::before {
  height: 65%;
}

.step-nav-item.active {
  background-color: rgba(77, 163, 255, 0.06);
  border: 1px solid rgba(77, 163, 255, 0.15);
  box-shadow: 0 0 25px rgba(77, 163, 255, 0.08);
}

.step-num {
  font-family: var(--font-accent);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  min-width: 30px;
}

.step-nav-item.active .step-num {
  color: var(--accent);
}

.step-name {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.step-nav-item.active .step-name {
  color: var(--text-white);
}

.step-nav-item:hover:not(.active) {
  border-color: rgba(255, 255, 255, 0.05);
  background-color: rgba(255, 255, 255, 0.02);
}

.step-nav-item:hover:not(.active) .step-num {
  color: var(--accent-secondary);
}

/* Modern Step Display Card */
.step-display-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: 22px;
  padding: 3rem 2.8rem;
  min-height: 380px;
  box-shadow: 0 25px 55px rgba(0, 0, 0, 0.35), inset 0 1px 1px rgba(255, 255, 255, 0.08);
  position: relative;
  overflow: hidden;
}

.step-display-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(77, 163, 255, 0.4), transparent);
}

.step-content {
  display: none;
  opacity: 0;
  transform: translateY(20px);
}

.step-content.active {
  display: block;
  animation: stepFadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.step-content-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.step-content-icon {
  width: 52px;
  height: 52px;
  background: rgba(77, 163, 255, 0.08);
  border: 1px solid rgba(77, 163, 255, 0.2);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.step-content-num {
  font-family: var(--font-accent);
  font-size: 3.5rem;
  font-weight: 800;
  color: rgba(77, 163, 255, 0.1);
  line-height: 1;
}

.step-content-title {
  font-size: 1.55rem;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.step-content-divider {
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  border-radius: 2px;
  margin-bottom: 1.5rem;
}

.step-content-text {
  font-size: 1.02rem;
  line-height: 1.8;
  margin-bottom: 2.5rem;
  color: var(--text-secondary);
}

.step-tags {
  display: flex;
  gap: 0.8rem;
  list-style: none;
  flex-wrap: wrap;
}

.step-tags li {
  font-family: monospace;
  font-size: 0.82rem;
  color: var(--accent-secondary);
  background: rgba(102, 217, 255, 0.06);
  border: 1px solid rgba(102, 217, 255, 0.18);
  padding: 0.35rem 0.85rem;
  border-radius: 6px;
  transition: var(--transition-fast);
}

.step-tags li:hover {
  background: rgba(102, 217, 255, 0.12);
  border-color: rgba(102, 217, 255, 0.35);
}

/* --- 11. Advantages Section --- */
.advantages-section {
  padding: 10rem 0;
  position: relative;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.2rem;
}

.advantage-card {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: 18px;
  padding: 3.2rem 2.2rem;
  overflow: hidden;
  transition: border-color 0.5s ease, transform 0.4s ease;
  z-index: 1;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.3), inset 0 1px 1px rgba(255, 255, 255, 0.08);
}

.advantage-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(350px circle at var(--mouse-x, 0) var(--mouse-y, 0), rgba(77, 163, 255, 0.08), transparent 50%);
  opacity: 0;
  transition: opacity 0.5s ease;
  pointer-events: none;
  z-index: -1;
}

.advantage-card:hover::before {
  opacity: 1;
}

.advantage-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-5px);
  box-shadow: 0 25px 55px rgba(0, 0, 0, 0.4);
}

.adv-icon {
  width: 56px;
  height: 56px;
  background: rgba(77, 163, 255, 0.06);
  border: 1px solid rgba(77, 163, 255, 0.18);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 1.6rem;
  transition: var(--transition-smooth);
}

.advantage-card:hover .adv-icon {
  background: rgba(77, 163, 255, 0.15);
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(77, 163, 255, 0.2);
}

.adv-title {
  font-size: 1.28rem;
  margin-bottom: 0.8rem;
  letter-spacing: -0.01em;
}

.adv-text {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --- 12. Contacts Section --- */
.contacts-section {
  padding: 10rem 0;
  position: relative;
}

.contacts-desc {
  font-size: 1.12rem;
  margin-bottom: 3rem;
  max-width: 520px;
  line-height: 1.7;
}

.contacts-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-bottom: 3rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.contact-icon {
  width: 46px;
  height: 46px;
  background-color: var(--bg-secondary);
  border: var(--glass-border);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.2rem;
  color: var(--accent);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

.contact-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.2rem;
}

.contact-value {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-white);
}

.link-glow:hover {
  color: var(--accent-secondary);
  text-shadow: 0 0 12px rgba(102, 217, 255, 0.5);
}

/* Streamlined Compact Requisites Panel (No KPP) */
.requisites-panel {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: 18px;
  padding: 2.4rem;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
}

.panel-label {
  font-size: 0.75rem;
  color: var(--accent-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.company-legal-title {
  font-size: 1.55rem;
  margin-bottom: 1.6rem;
  letter-spacing: -0.01em;
}

.req-grid-compact {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.2rem;
  margin-bottom: 1.4rem;
}

.req-item {
  display: flex;
  flex-direction: column;
  background: rgba(7, 18, 37, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 0.9rem 1.2rem;
  border-radius: 10px;
  position: relative;
}

.req-label {
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin-bottom: 0.2rem;
}

.req-val {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-white);
  font-family: monospace;
}

.btn-copy {
  position: absolute;
  top: 0.7rem;
  right: 0.7rem;
  color: var(--text-secondary);
  cursor: pointer;
  opacity: 0;
  transition: var(--transition-fast);
}

.req-item:hover .btn-copy {
  opacity: 1;
}

.btn-copy:hover {
  color: var(--accent);
}

.tooltip {
  position: absolute;
  bottom: 110%;
  left: 50%;
  transform: translateX(-50%) translateY(5px);
  background: var(--bg-primary);
  border: 1px solid var(--accent);
  color: var(--text-white);
  font-size: 0.72rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
  white-space: nowrap;
}

.tooltip.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.req-full-row {
  display: flex;
  margin-bottom: 0.8rem;
  font-size: 0.92rem;
}

.req-full-row .req-label {
  width: 125px;
  flex-shrink: 0;
}

.req-full-row .req-val {
  color: var(--text-white);
  font-family: inherit;
}

/* Form Card */
.contacts-form-wrapper {
  display: flex;
  justify-content: flex-end;
}

.glass-form-card {
  width: 100%;
  max-width: 490px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: 22px;
  padding: 3.2rem 2.8rem;
  box-shadow: 0 35px 70px rgba(0, 0, 0, 0.45);
  position: relative;
  overflow: hidden;
}

.form-title {
  font-size: 1.85rem;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.form-subtitle {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
}

#feedback-form {
  transition: opacity 0.3s ease;
}

.form-group {
  position: relative;
  margin-bottom: 2rem;
}

.form-input {
  width: 100%;
  background: transparent;
  border-bottom: 1.5px solid rgba(255, 255, 255, 0.12);
  padding: 0.65rem 0;
  font-size: 1rem;
  color: var(--text-white);
  transition: var(--transition-fast);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-label {
  position: absolute;
  top: 0.65rem;
  left: 0;
  font-size: 1rem;
  color: var(--text-secondary);
  pointer-events: none;
  transition: var(--transition-fast);
}

.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
  top: -1.2rem;
  font-size: 0.75rem;
  color: var(--accent);
}

.form-input:focus {
  border-bottom-color: var(--accent);
}

.form-error-msg {
  display: block;
  font-size: 0.75rem;
  color: #FF5F56;
  margin-top: 0.4rem;
  opacity: 0;
  height: 0;
  overflow: hidden;
  transition: var(--transition-fast);
}

.form-group.has-error .form-input {
  border-bottom-color: #FF5F56;
}

.form-group.has-error .form-error-msg {
  opacity: 1;
  height: auto;
}

.form-consent {
  margin-bottom: 2rem;
}

.consent-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.consent-checkbox-label input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkbox-custom {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 1.5px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  position: relative;
  flex-shrink: 0;
  transition: var(--transition-fast);
}

.consent-checkbox-label:hover input ~ .checkbox-custom {
  border-color: var(--accent);
}

.consent-checkbox-label input:checked ~ .checkbox-custom {
  background-color: var(--accent);
  border-color: var(--accent);
}

.checkbox-custom::after {
  content: "";
  position: absolute;
  display: none;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 9px;
  border: solid var(--bg-primary);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.consent-checkbox-label input:checked ~ .checkbox-custom::after {
  display: block;
}

.form-consent.has-error .checkbox-custom {
  border-color: #FF5F56;
}

.form-consent.has-error .form-error-msg {
  opacity: 1;
  height: auto;
}

/* --- 13. Feedback Success Modal Dialog Popup --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(7, 18, 37, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 10000;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.4s;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  position: relative;
  width: 100%;
  max-width: 440px;
  background: var(--bg-secondary);
  border: var(--glass-border);
  border-radius: 20px;
  padding: 3rem 2.5rem;
  text-align: center;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
  transform: scale(0.9);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-card {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 1rem;
  right: 1.2rem;
  font-size: 1.6rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--text-white);
}

.modal-icon-wrapper {
  width: 72px;
  height: 72px;
  margin: 0 auto 1.5rem auto;
}

.checkmark-svg {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: block;
  stroke-width: 2.5;
  stroke: #27C93F;
  stroke-miterlimit: 10;
  box-shadow: inset 0 0 0 #27C93F;
}

.checkmark-circle {
  stroke-dasharray: 166;
  stroke-dashoffset: 166;
  stroke-width: 2.5;
  stroke-miterlimit: 10;
  stroke: #27C93F;
  fill: rgba(39, 201, 63, 0.08);
  animation: stroke 0.6s cubic-bezier(0.65, 0, 0.45, 1) forwards;
}

.checkmark-check {
  transform-origin: 50% 50%;
  stroke-dasharray: 48;
  stroke-dashoffset: 48;
  animation: stroke 0.3s cubic-bezier(0.65, 0, 0.45, 1) 0.6s forwards;
}

.modal-title {
  font-size: 1.8rem;
  margin-bottom: 0.8rem;
}

.modal-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.btn-modal {
  min-width: 140px;
}

/* --- 14. Footer Section --- */
.site-footer {
  background-color: var(--bg-secondary);
  border-top: var(--glass-border);
  padding: 4.5rem 0;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-copyright {
  font-size: 0.85rem;
}

.footer-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1rem;
}

.footer-nav ul {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer-nav a {
  font-size: 0.85rem;
}

.footer-nav a:hover {
  color: var(--text-white);
}

.footer-legal {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* --- 15. Back to Top Button --- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: var(--glass-border);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  z-index: 99;
  opacity: 0;
  transform: translateY(15px);
  transition: opacity 0.3s, transform 0.3s, background-color 0.3s;
}

.back-to-top.show {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--bg-primary);
  border-color: var(--accent);
}

.back-to-top-svg {
  width: 100%;
  height: 100%;
}

.progress-ring {
  stroke-dasharray: 283;
  stroke-dashoffset: 283;
  transition: stroke-dashoffset 0.1s;
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
}

/* --- 16. Scroll Reveal Classes --- */
.scroll-reveal {
  opacity: 0;
  transform: translateY(35px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.delay-200 {
  transition-delay: 0.15s;
}

.delay-400 {
  transition-delay: 0.3s;
}

/* --- 17. Keyframes & Network Animations --- */
@keyframes preloaderSpin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes stroke {
  100% { stroke-dashoffset: 0; }
}

@keyframes logoBreath {
  0%, 100% { filter: drop-shadow(0 0 2px rgba(77, 163, 255, 0.3)); }
  50% { filter: drop-shadow(0 0 10px rgba(102, 217, 255, 0.85)); }
}

@keyframes pulseDot {
  0%, 100% { opacity: 0.4; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.25); }
}

@keyframes pulseCore {
  0%, 100% { transform: translate(-50%, -50%) scale(0.95); opacity: 0.5; }
  50% { transform: translate(-50%, -50%) scale(1.15); opacity: 0.95; }
}

@keyframes floatNode1 {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-8px) rotate(2deg); }
}

@keyframes floatNode2 {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-12px) rotate(-3deg); }
}

@keyframes floatNode3 {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-6px) rotate(1.5deg); }
}

@keyframes nodePulse {
  0%, 100% { box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6), inset 0 1px 1px rgba(255, 255, 255, 0.2); }
  50% { box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6), inset 0 1px 1px rgba(255, 255, 255, 0.2), 0 0 20px rgba(77, 163, 255, 0.3); }
}

@keyframes stepFadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scrollWheel {
  0% { opacity: 0; transform: translateY(0); }
  30% { opacity: 1; }
  60% { opacity: 0; transform: translateY(10px); }
  100% { opacity: 0; }
}

@keyframes rotateClockwise {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes rotateCounterClockwise {
  from { transform: rotate(0deg); }
  to { transform: rotate(-360deg); }
}

/* --- 18. Responsive Media Queries --- */
@media (max-width: 1024px) {
  html {
    font-size: 15px;
  }
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }
  .hero-content {
    align-items: center;
  }
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-visual {
    width: 100%;
  }
  .features-bar-container {
    grid-template-columns: repeat(2, 1fr);
  }
  .section-grid {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
  .about-visual {
    order: -1;
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .approach-wrapper {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contacts-form-wrapper {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }
  
  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: var(--bg-primary);
    border-top: var(--glass-border);
    padding: 3rem 2rem;
    transform: translateX(100%);
    transition: var(--transition-smooth);
    z-index: 999;
  }
  
  .main-nav.active {
    transform: translateX(0);
  }
  
  .nav-list {
    flex-direction: column;
    gap: 2rem;
    align-items: center;
  }
  
  .nav-link {
    font-size: 1.25rem;
  }
  
  .mobile-nav-toggle {
    display: flex;
  }
  
  .mobile-nav-toggle.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .mobile-nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
  }
  .mobile-nav-toggle.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .hero-title {
    font-size: 2.7rem;
  }
  
  #hero-orb {
    width: 320px;
    height: 320px;
  }
  
  .features-bar-container {
    grid-template-columns: 1fr;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
  }
  
  .advantages-grid {
    grid-template-columns: 1fr;
  }
  
  .req-grid-compact {
    grid-template-columns: 1fr;
  }
  
  .footer-container {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }
  
  .footer-right {
    align-items: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.1rem;
  }
  
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
  
  .glass-form-card {
    padding: 2rem 1.5rem;
  }
  
  .requisites-panel {
    padding: 1.5rem 1rem;
  }
  
  .req-full-row {
    flex-direction: column;
    gap: 0.2rem;
  }
  
  .req-full-row .req-label {
    width: 100%;
  }
}