/* =========================================================
   VK-Development — Stylesheet
   Sections: Tokens, Reset, Base, Utilities, Layout, Header,
   Hero, Stats, Services, Projects, Showcase, Technologies,
   WhyUs, Process, FAQ, CTA, Contact, Footer, Animations,
   Media Queries
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  --color-bg: #020611;
  --color-bg-secondary: #06101f;
  --color-card-bg: rgba(8, 18, 35, 0.75);
  --color-card-bg-solid: #081223;
  --color-primary-blue: #1677ff;
  --color-primary-cyan: #00c8ff;
  --color-accent-cyan: #00e5ff;
  --color-text-primary: #f7f9ff;
  --color-text-secondary: #9ba9bd;
  --color-border: rgba(45, 145, 255, 0.25);
  --color-border-strong: rgba(45, 145, 255, 0.45);
  --color-success: #22d3a5;

  --gradient-primary: linear-gradient(135deg, var(--color-primary-blue), var(--color-accent-cyan));
  --gradient-text: linear-gradient(120deg, var(--color-primary-cyan), var(--color-accent-cyan) 60%, #7bf3ff);
  --gradient-radial-glow: radial-gradient(circle, rgba(0, 200, 255, 0.55) 0%, rgba(0, 200, 255, 0) 70%);

  --shadow-glow-sm: 0 0 24px rgba(22, 119, 255, 0.25);
  --shadow-glow-md: 0 0 48px rgba(0, 200, 255, 0.22);
  --shadow-card: 0 20px 60px rgba(0, 0, 0, 0.45);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;

  --container-width: 1280px;
  --header-height: 84px;

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;

  --transition-fast: 0.18s ease;
  --transition-base: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.7s cubic-bezier(0.16, 1, 0.3, 1);

  --ease-out-soft: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

input,
select,
textarea {
  font: inherit;
  color: inherit;
}

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section_head {
  max-width: 640px;
  margin: 0 auto var(--space-8);
  text-align: center;
}

.section_head--left {
  margin-inline: 0;
  text-align: left;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: rgba(22, 119, 255, 0.08);
  color: var(--color-primary-cyan);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-5);
}

.section_title {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  margin-bottom: var(--space-4);
}

.section_desc {
  color: var(--color-text-secondary);
  font-size: 1.0625rem;
}

.text_gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.9rem 1.75rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.btn:hover svg {
  transform: translateX(3px);
}

.btn_primary {
  background: var(--gradient-primary);
  color: #04101f;
  box-shadow: var(--shadow-glow-sm);
}

.btn_primary:hover {
  box-shadow: 0 0 36px rgba(0, 200, 255, 0.45);
  transform: translateY(-2px);
}

.btn_secondary {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
}

.btn_secondary:hover {
  border-color: var(--color-border-strong);
  background: rgba(22, 119, 255, 0.08);
  transform: translateY(-2px);
}

.btn_block {
  width: 100%;
}

.icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease-out-soft), transform 0.8s var(--ease-out-soft);
}

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

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

.sr_only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.skip_link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  z-index: 999;
  background: var(--color-primary-blue);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
}

.skip_link:focus {
  top: var(--space-4);
}

/* ---------- Background texture (shared) ---------- */
.bg_grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(45, 145, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45, 145, 255, 0.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}

.bg_glow {
  position: fixed;
  inset: 0;
  z-index: -3;
  background: var(--color-bg);
}

.bg_glow::before,
.bg_glow::after {
  content: '';
  position: absolute;
  width: 640px;
  height: 640px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.28;
}

.bg_glow::before {
  top: -220px;
  right: -160px;
  background: var(--color-primary-blue);
}

.bg_glow::after {
  top: 40%;
  left: -220px;
  background: var(--color-accent-cyan);
  opacity: 0.16;
}

/* ---------- Header ---------- */
.site_header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  background: rgba(2, 6, 17, 0.15);
  transition: background var(--transition-base), border-color var(--transition-base), backdrop-filter var(--transition-base), height var(--transition-base);
}

.site_header.is_scrolled {
  height: 72px;
  background: rgba(3, 9, 22, 0.82);
  border-bottom-color: var(--color-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.header_inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  width: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.brand picture {
  display: contents;
}

.brand_mark {
  width: auto;
  height: 38px;
}

.brand_name {
  color: var(--color-text-primary);
}

.main_nav_list {
  display: flex;
  align-items: center;
  gap: var(--space-7);
}

.main_nav_link {
  position: relative;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding-block: var(--space-2);
  transition: color var(--transition-fast);
}

.main_nav_link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-fast);
}

.main_nav_link:hover {
  color: var(--color-text-primary);
}

.main_nav_link:hover::after {
  width: 100%;
}

.header_actions {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.nav_toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.nav_toggle_bar {
  width: 18px;
  height: 2px;
  background: var(--color-text-primary);
  margin-inline: auto;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav_toggle[aria-expanded="true"] .nav_toggle_bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav_toggle[aria-expanded="true"] .nav_toggle_bar:nth-child(2) {
  opacity: 0;
}

.nav_toggle[aria-expanded="true"] .nav_toggle_bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero_section {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 100vh;
  padding-top: calc(var(--header-height) + var(--space-6));
  padding-bottom: var(--space-8);
}

.hero_scroll_hint {
  position: absolute;
  bottom: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-card-bg);
  color: var(--color-primary-cyan);
  z-index: 3;
  animation: hero_scroll_hint_blink 2.4s ease-in-out infinite;
  transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

.hero_scroll_hint:hover {
  border-color: var(--color-border-strong);
  background: rgba(22, 119, 255, 0.14);
  color: var(--color-accent-cyan);
}

@keyframes hero_scroll_hint_blink {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
    opacity: 0.55;
  }
  50% {
    transform: translateX(-50%) translateY(8px);
    opacity: 1;
  }
}

.hero_inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: var(--space-8);
}

.hero_content {
  max-width: 560px;
}

.hero_title {
  font-size: clamp(2.4rem, 4.4vw, 3.6rem);
  margin-bottom: var(--space-5);
}

.hero_desc {
  color: var(--color-text-secondary);
  font-size: 1.0625rem;
  max-width: 480px;
  margin-bottom: var(--space-6);
}

.hero_actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-7);
  flex-wrap: wrap;
}

.hero_perks {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
}

.hero_perk {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.hero_perk svg {
  color: var(--color-primary-cyan);
}

.hero_visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 560px;
}

.hero_visual_glow {
  position: absolute;
  width: 480px;
  height: 480px;
  background: var(--gradient-radial-glow);
  border-radius: 50%;
  filter: blur(6px);
  animation: pulse_glow 6s ease-in-out infinite;
}

.hero_visual_glow_core {
  position: absolute;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.55) 0%, rgba(22, 119, 255, 0.22) 55%, rgba(0, 200, 255, 0) 75%);
  border-radius: 50%;
  filter: blur(4px);
  animation: pulse_glow 5s ease-in-out infinite;
  animation-delay: -1.5s;
}

.hero_visual_ring {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  border: 1px dashed var(--color-border);
  animation: spin_slow 40s linear infinite;
}

.hero_visual_ring::before {
  content: '';
  position: absolute;
  top: -3px;
  left: calc(50% - 3px);
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-accent-cyan);
  box-shadow: 0 0 12px 3px var(--color-accent-cyan);
}

.hero_visual_circuit {
  position: absolute;
  width: 100%;
  height: 100%;
  color: var(--color-border);
  opacity: 0.7;
}

.hero_visual picture {
  display: contents;
}

.hero_visual_mark {
  position: relative;
  width: 340px;
  z-index: 2;
  filter: drop-shadow(0 0 20px rgba(0, 229, 255, 0.45)) drop-shadow(0 14px 32px rgba(0, 0, 0, 0.55));
  animation: float_soft 7s ease-in-out infinite;
}

.hero_visual_wordmark {
  position: absolute;
  bottom: 34px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  z-index: 3;
  white-space: nowrap;
}

.hero_visual_wordmark_title {
  display: block;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--color-text-primary);
}

.hero_visual_wordmark_tag {
  display: block;
  font-size: 0.625rem;
  letter-spacing: 0.3em;
  color: var(--color-primary-cyan);
  margin-top: 4px;
}

.hero_visual_device {
  position: absolute;
  right: 6%;
  top: 10%;
  width: 132px;
  height: 264px;
  background: linear-gradient(155deg, #0c1a2e, #050c18);
  border: 2px solid rgba(126, 178, 255, 0.35);
  border-radius: 26px;
  box-shadow: var(--shadow-card), 0 0 40px rgba(0, 200, 255, 0.25);
  padding: 10px;
  z-index: 4;
  animation: float_soft 8s ease-in-out infinite;
  animation-delay: -2s;
}

.hero_visual_device_notch {
  width: 40px;
  height: 5px;
  border-radius: var(--radius-pill);
  background: rgba(247, 249, 255, 0.25);
  margin: 0 auto 10px;
}

.hero_visual_device_line {
  height: 8px;
  border-radius: 4px;
  background: rgba(126, 178, 255, 0.18);
  margin-bottom: 8px;
}

.hero_visual_device_line--accent {
  background: var(--gradient-primary);
  width: 60%;
}

.hero_visual_device_card {
  height: 56px;
  border-radius: 10px;
  background: rgba(22, 119, 255, 0.12);
  border: 1px solid var(--color-border);
  margin-top: 12px;
}

.hero_visual_badge {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-card-bg);
  border: 1px solid var(--color-border-strong);
  color: var(--color-primary-cyan);
  backdrop-filter: blur(8px);
  box-shadow: 0 0 20px rgba(0, 200, 255, 0.18);
  z-index: 5;
  animation: float_soft 6s ease-in-out infinite;
}

.hero_visual_badge--code {
  top: 6%;
  right: 30%;
  animation-delay: -1s;
}

.hero_visual_badge--phone {
  top: 32%;
  right: -2%;
  animation-delay: -3s;
}

.hero_visual_badge--cloud {
  bottom: 22%;
  left: 6%;
  animation-delay: -4.5s;
}

.hero_visual_badge--db {
  bottom: 8%;
  right: 22%;
  animation-delay: -2.5s;
}

.hero_visual_particle {
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--color-primary-cyan);
  border-radius: 2px;
  opacity: 0.7;
  animation: float_particle 5s ease-in-out infinite;
}

/* ---------- Stats ---------- */
.stats_section {
  padding-block: var(--space-6);
}

.stats_bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-card-bg);
  overflow: hidden;
}

.stat_item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-6) var(--space-5);
  border-right: 1px solid var(--color-border);
}

.stat_item:last-child {
  border-right: none;
}

.stat_icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(22, 119, 255, 0.12);
  color: var(--color-primary-cyan);
  flex-shrink: 0;
}

.stat_value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-text-primary);
  line-height: 1.2;
}

.stat_label {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* ---------- Services ---------- */
.services_section {
  padding-block: var(--space-10);
}

.services_grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.service_card {
  position: relative;
  padding: var(--space-6) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-card-bg);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.service_card:hover {
  transform: translateY(-6px);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-glow-md);
}

.service_card_icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(22, 119, 255, 0.12);
  color: var(--color-primary-cyan);
  margin-bottom: var(--space-5);
  transition: background var(--transition-base), color var(--transition-base);
}

.service_card:hover .service_card_icon {
  background: var(--gradient-primary);
  color: #04101f;
}

.service_card_title {
  font-size: 1.15rem;
  margin-bottom: var(--space-2);
}

.service_card_desc {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  margin-bottom: var(--space-5);
}

.tag_list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-pill);
  background: rgba(0, 200, 255, 0.1);
  border: 1px solid var(--color-border);
  color: var(--color-primary-cyan);
}

/* ---------- Projects ---------- */
.projects_section {
  padding-block: var(--space-10);
}

.projects_grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}

.project_card {
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-card-bg);
  overflow: hidden;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.project_card:hover {
  transform: translateY(-6px);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-glow-md);
}

.project_card_media {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 220px;
  background: linear-gradient(160deg, var(--color-bg-secondary), #030a16);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.project_card_badge {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-pill);
  background: rgba(2, 6, 17, 0.7);
  border: 1px solid var(--color-border-strong);
  color: var(--color-accent-cyan);
  z-index: 3;
}

.device_mock {
  position: relative;
  width: 200px;
  height: 130px;
}

.device_mock_screen {
  width: 100%;
  height: 100%;
  border-radius: 8px 8px 0 0;
  background: #0a1220;
  border: 1px solid var(--color-border);
  padding: 10px;
}

.device_mock_stand {
  width: 60%;
  height: 8px;
  margin: 0 auto;
  background: #0a1220;
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 6px 6px;
}

.device_mock_bar {
  height: 6px;
  border-radius: 3px;
  background: rgba(126, 178, 255, 0.18);
  margin-bottom: 6px;
}

.device_mock_bar--accent {
  background: var(--gradient-primary);
  width: 40%;
}

.device_mock_grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
  margin-top: 8px;
}

.device_mock_tile {
  height: 24px;
  border-radius: 4px;
  background: rgba(0, 200, 255, 0.12);
  border: 1px solid var(--color-border);
}

.device_mock_phone {
  position: absolute;
  right: -14px;
  bottom: -18px;
  width: 62px;
  height: 118px;
  background: #0a1220;
  border: 2px solid var(--color-border-strong);
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.project_card_body {
  padding: var(--space-5);
}

.project_card_title {
  font-size: 1.1rem;
  margin-bottom: var(--space-2);
}

.project_card_desc {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* ---------- Showcase ---------- */
.showcase_section {
  padding-block: var(--space-10);
}

.showcase_inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(22, 119, 255, 0.08), rgba(2, 6, 17, 0.4));
  position: relative;
  overflow: hidden;
}

.showcase_visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 340px;
}

.showcase_laptop {
  width: 320px;
}

.showcase_laptop_screen {
  height: 190px;
  background: #0a1220;
  border: 2px solid var(--color-border-strong);
  border-radius: 10px 10px 0 0;
  padding: 14px;
}

.showcase_laptop_base {
  height: 12px;
  background: linear-gradient(180deg, #1a2740, #0a1220);
  border-radius: 0 0 8px 8px;
  position: relative;
}

.showcase_laptop_base::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 100%;
  transform: translateX(-50%);
  width: 40%;
  height: 6px;
  background: #0a1220;
  border-radius: 0 0 8px 8px;
}

.showcase_phone {
  position: absolute;
  right: 10%;
  bottom: -6%;
  width: 88px;
  height: 172px;
  background: #0a1220;
  border: 2px solid var(--color-border-strong);
  border-radius: 18px;
  box-shadow: var(--shadow-card);
  padding: 8px;
}

.showcase_list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-block: var(--space-6);
}

.showcase_list_item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.9375rem;
}

.showcase_list_item svg {
  color: #04101f;
  background: var(--gradient-primary);
  border-radius: 50%;
  padding: 3px;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.showcase_actions {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.link_arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border-strong);
  padding-bottom: 2px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.link_arrow:hover {
  color: var(--color-primary-cyan);
  border-color: var(--color-primary-cyan);
}

/* ---------- Technologies ---------- */
.tech_section {
  padding-block: var(--space-10);
}

.tech_marquee {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-top: var(--space-7);
}

.tech_track_wrap {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.tech_track {
  display: flex;
  width: max-content;
  gap: var(--space-4);
  animation: marquee_left 38s linear infinite;
}

.tech_track--reverse {
  animation-name: marquee_right;
  animation-duration: 34s;
}

.tech_marquee:hover .tech_track {
  animation-play-state: paused;
}

.tech_chip {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-card-bg);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
}

.tech_chip svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary-cyan);
}

/* ---------- Why Us ---------- */
.why_section {
  padding-block: var(--space-10);
}

.why_grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.why_item {
  padding: var(--space-6) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-card-bg);
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.why_item:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-4px);
}

.why_item_number {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary-cyan);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
}

.why_item_title {
  font-size: 1.1rem;
  margin-bottom: var(--space-2);
}

.why_item_desc {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* ---------- Process ---------- */
.process_section {
  padding-block: var(--space-10);
}

.process_grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  position: relative;
}

.process_step {
  position: relative;
  padding: var(--space-6) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-card-bg);
}

.process_step_number {
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: var(--space-4);
}

.process_step_title {
  font-size: 1.05rem;
}

.process_connector {
  position: absolute;
  top: 32px;
  right: calc(-1 * var(--space-5) / 2 - 1px);
  width: var(--space-5);
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--color-border-strong) 0 6px, transparent 6px 12px);
}

/* ---------- FAQ ---------- */
.faq_section {
  padding-block: var(--space-10);
}

.faq_layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: var(--space-8);
  align-items: start;
}

.faq_intro {
  position: sticky;
  top: calc(var(--header-height) + var(--space-6));
}

.faq_intro .section_title,
.faq_intro .section_desc {
  margin-inline: 0;
}

.faq_intro_card {
  margin-top: var(--space-7);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-card-bg);
}

.faq_intro_card_title {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: var(--space-2);
}

.faq_intro_card_text {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  margin-bottom: var(--space-4);
}

.faq_list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq_item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-card-bg);
  overflow: hidden;
}

.faq_question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5);
  text-align: left;
  font-weight: 600;
  font-size: 1rem;
}

.faq_question_icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  color: var(--color-primary-cyan);
  transition: transform var(--transition-base);
}

.faq_item[data-open="true"] .faq_question_icon {
  transform: rotate(45deg);
}

.faq_answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-base);
}

.faq_item[data-open="true"] .faq_answer {
  grid-template-rows: 1fr;
}

.faq_answer_inner {
  overflow: hidden;
}

.faq_answer_inner p {
  padding: 0 var(--space-5) var(--space-5);
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* ---------- CTA ---------- */
.cta_section {
  padding-block: var(--space-10);
}

.cta_inner {
  position: relative;
  text-align: center;
  padding: var(--space-9) var(--space-6);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 50% 0%, rgba(22, 119, 255, 0.22), rgba(2, 6, 17, 0.2) 60%);
  box-shadow: 0 0 90px rgba(0, 200, 255, 0.18);
  overflow: hidden;
}

.cta_title {
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
  margin-bottom: var(--space-4);
  max-width: 640px;
  margin-inline: auto;
}

.cta_desc {
  color: var(--color-text-secondary);
  max-width: 520px;
  margin: 0 auto var(--space-7);
}

.cta_actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ---------- Contact ---------- */
.contact_section {
  padding-block: var(--space-10);
}

.contact_grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: var(--space-8);
}

.contact_info_title {
  font-size: 1.6rem;
  margin-bottom: var(--space-4);
}

.contact_info_desc {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.contact_info_list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact_info_item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.9375rem;
}

.contact_info_item svg {
  color: var(--color-primary-cyan);
  flex-shrink: 0;
}

.contact_form {
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-card-bg);
}

.form_row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form_group {
  margin-bottom: var(--space-5);
}

.form_label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.form_label .required {
  color: var(--color-primary-cyan);
}

.form_input,
.form_select,
.form_textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: rgba(2, 6, 17, 0.55);
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form_select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239ba9bd' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

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

.form_input:focus,
.form_select:focus,
.form_textarea:focus {
  outline: none;
  border-color: var(--color-primary-cyan);
  box-shadow: 0 0 0 3px rgba(0, 200, 255, 0.15);
}

.form_input[aria-invalid="true"],
.form_select[aria-invalid="true"],
.form_textarea[aria-invalid="true"] {
  border-color: #ff6161;
}

.form_error {
  display: none;
  color: #ff8a8a;
  font-size: 0.8125rem;
  margin-top: var(--space-2);
}

.form_error.is_visible {
  display: block;
}

.form_honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form_note {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-4);
  text-align: center;
}

.form_status {
  margin-top: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  display: none;
}

.form_status.is_visible {
  display: block;
}

.form_status--success {
  background: rgba(34, 211, 165, 0.1);
  border: 1px solid rgba(34, 211, 165, 0.4);
  color: var(--color-success);
}

.form_status--error {
  background: rgba(255, 97, 97, 0.1);
  border: 1px solid rgba(255, 97, 97, 0.4);
  color: #ff8a8a;
}

/* ---------- Back to top ---------- */
.back_to_top {
  position: fixed;
  right: var(--space-6);
  bottom: var(--space-6);
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-card-bg);
  backdrop-filter: blur(8px);
  color: var(--color-primary-cyan);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base), border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

.back_to_top .icon {
  transform: rotate(180deg);
}

.back_to_top.is_visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back_to_top:hover {
  border-color: var(--color-border-strong);
  background: rgba(22, 119, 255, 0.14);
  color: var(--color-accent-cyan);
  box-shadow: var(--shadow-glow-sm);
}

@media (max-width: 767px) {
  .back_to_top {
    right: var(--space-5);
    bottom: var(--space-5);
    width: 44px;
    height: 44px;
  }
}

/* ---------- Footer ---------- */
.site_footer {
  padding-block: var(--space-8) var(--space-6);
  border-top: 1px solid var(--color-border);
}

.footer_top {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: var(--space-7);
  padding-bottom: var(--space-7);
}

.footer_brand_tag {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  margin-top: var(--space-3);
  max-width: 260px;
}

.footer_heading {
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.footer_nav_list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer_nav_link {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.footer_nav_link:hover {
  color: var(--color-primary-cyan);
}

.footer_bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer_copyright {
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
}

.footer_legal {
  display: flex;
  gap: var(--space-5);
}

.footer_legal_link {
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
  transition: color var(--transition-fast);
}

.footer_legal_link:hover {
  color: var(--color-primary-cyan);
}

/* ---------- Legal pages ---------- */
.legal_section {
  padding-top: calc(var(--header-height) + var(--space-8));
  padding-bottom: var(--space-10);
}

.legal_content {
  max-width: 760px;
  margin-inline: auto;
}

.legal_content h1 {
  font-size: 2rem;
  margin-bottom: var(--space-6);
}

.legal_content h2 {
  font-size: 1.25rem;
  margin-top: var(--space-7);
  margin-bottom: var(--space-3);
}

.legal_content p,
.legal_content li {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

.legal_content ul {
  padding-left: var(--space-5);
  list-style: disc;
}

.legal_note {
  margin-top: var(--space-7);
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-card-bg);
  font-size: 0.875rem;
}

/* ---------- Animations ---------- */
@keyframes float_soft {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

@keyframes float_particle {
  0%, 100% { transform: translate(0, 0); opacity: 0.3; }
  50% { transform: translate(6px, -18px); opacity: 0.9; }
}

@keyframes pulse_glow {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 0.85; transform: scale(1.08); }
}

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

@keyframes marquee_left {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@keyframes marquee_right {
  from { transform: translateX(-50%); }
  to { transform: translateX(0); }
}

/* ---------- Mobile Nav ---------- */
.mobile_nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 84vw);
  background: var(--color-bg-secondary);
  border-left: 1px solid var(--color-border);
  padding: var(--space-8) var(--space-6);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: var(--space-7);
}

.mobile_nav.is_open {
  transform: translateX(0);
}

.mobile_nav_list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.mobile_nav_link {
  font-size: 1.05rem;
  font-weight: 600;
}

.mobile_nav_close {
  align-self: flex-end;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav_backdrop {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 17, 0.6);
  backdrop-filter: blur(2px);
  z-index: 150;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.nav_backdrop.is_open {
  opacity: 1;
  pointer-events: auto;
}

/* ---------- Responsive ---------- */
@media (max-width: 1439px) {
  :root {
    --container-width: 1120px;
  }
}

@media (max-width: 1023px) {
  .main_nav_list,
  .header_actions .btn_primary {
    display: none;
  }

  .nav_toggle {
    display: flex;
  }

  .hero_inner {
    grid-template-columns: 1fr;
  }

  .hero_content {
    max-width: 100%;
    text-align: center;
    margin-inline: auto;
  }

  .hero_desc {
    margin-inline: auto;
  }

  .hero_actions,
  .hero_perks {
    justify-content: center;
  }

  .hero_visual {
    height: 420px;
  }

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

  .stat_item:nth-child(2) {
    border-right: none;
  }

  .stat_item:nth-child(1),
  .stat_item:nth-child(2) {
    border-bottom: 1px solid var(--color-border);
  }

  .services_grid,
  .projects_grid,
  .why_grid,
  .process_grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .process_connector {
    display: none;
  }

  .showcase_inner,
  .contact_grid,
  .faq_layout {
    grid-template-columns: 1fr;
  }

  .showcase_visual {
    order: -1;
  }

  .faq_intro {
    position: static;
    margin-bottom: var(--space-6);
  }

  .footer_top {
    grid-template-columns: 1fr 1fr;
    row-gap: var(--space-6);
  }
}

@media (max-width: 767px) {
  :root {
    --header-height: 68px;
  }

  .container {
    padding-inline: var(--space-5);
  }

  .hero_section {
    min-height: auto;
    padding-top: calc(var(--header-height) + var(--space-5));
  }

  .hero_scroll_hint {
    display: none;
  }

  .hero_actions {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .hero_actions .btn {
    width: 100%;
  }

  .hero_perks {
    gap: var(--space-4) var(--space-5);
  }

  .stats_bar {
    grid-template-columns: 1fr;
  }

  .stat_item {
    border-right: none !important;
    border-bottom: 1px solid var(--color-border);
  }

  .stat_item:last-child {
    border-bottom: none;
  }

  .services_grid,
  .projects_grid,
  .why_grid,
  .process_grid,
  .form_row {
    grid-template-columns: 1fr;
  }

  .showcase_inner {
    padding: var(--space-6) var(--space-5);
  }

  .showcase_list {
    grid-template-columns: 1fr;
  }

  .cta_actions {
    flex-direction: column;
    align-items: stretch;
  }

  .footer_top {
    grid-template-columns: 1fr;
  }

  .footer_bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero_visual {
    height: 340px;
  }

  .hero_visual_glow {
    width: 320px;
    height: 320px;
  }

  .hero_visual_glow_core {
    width: 190px;
    height: 190px;
  }

  .hero_visual_ring {
    width: 280px;
    height: 280px;
  }

  .hero_visual_mark {
    width: 220px;
  }

  .hero_visual_device {
    right: 4%;
    top: 8%;
    width: 100px;
    height: 200px;
  }

  .hero_visual_badge {
    width: 42px;
    height: 42px;
  }

  .hero_visual_wordmark {
    bottom: 22px;
  }

  .hero_visual_wordmark_title {
    font-size: 0.8rem;
  }

  .hero_visual_wordmark_tag {
    font-size: 0.5rem;
    letter-spacing: 0.22em;
  }

  .hero_visual_badge--db {
    bottom: 2%;
    right: 8%;
  }

  .hero_visual_badge--cloud {
    bottom: 30%;
    left: 0;
  }
}