:root {
  --bg: #050811;
  --bg-soft: #0b1220;
  --bg-deep: #03060e;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-strong: rgba(255, 255, 255, 0.1);
  --text: #eaf0ff;
  --muted: #a6b2d3;
  --primary: #7b8cff;
  --primary-2: #39c6ff;
  --primary-3: #73ffe6;
  --line: rgba(255, 255, 255, 0.14);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  --ease-smooth: cubic-bezier(0.2, 0.7, 0.24, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% -20%, #1a2455, transparent 40%), var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
  perspective: 900px;
}

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

.container {
  width: min(1160px, calc(100vw - 3rem));
  margin: 0 auto;
}

.section {
  position: relative;
  padding: clamp(4.2rem, 8vw, 7rem) 0;
}

.section-tight {
  padding-top: 2.4rem;
}

.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: clip;
}

#constellation {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.5;
}

.orb {
  position: absolute;
  width: 42rem;
  aspect-ratio: 1;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.32;
}

.orb-a {
  background: #4264ff;
  top: -10rem;
  left: -8rem;
  animation: driftA 20s var(--ease-smooth) infinite alternate;
}

.orb-b {
  background: #28d8ff;
  right: -10rem;
  bottom: -12rem;
  animation: driftB 26s var(--ease-smooth) infinite alternate;
}

.ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(144, 175, 255, 0.2);
  box-shadow: inset 0 0 40px rgba(75, 122, 255, 0.14);
  animation: rotateRing linear infinite;
}

.ring-a {
  width: min(66vw, 48rem);
  aspect-ratio: 1;
  top: -24rem;
  right: -12rem;
  animation-duration: 46s;
}

.ring-b {
  width: min(78vw, 58rem);
  aspect-ratio: 1;
  bottom: -34rem;
  left: -20rem;
  animation-direction: reverse;
  animation-duration: 68s;
}

.grid-mask {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at 50% 30%, black 25%, transparent 82%);
}

.noise-mask {
  position: absolute;
  inset: 0;
  opacity: 0.1;
  background-image: radial-gradient(rgba(255, 255, 255, 0.2) 1px, transparent 1px);
  background-size: 3px 3px;
  mix-blend-mode: soft-light;
}

@keyframes driftA {
  from {
    transform: translate(0, 0) scale(1);
  }
  to {
    transform: translate(6vw, 5vh) scale(1.08);
  }
}

@keyframes driftB {
  from {
    transform: translate(0, 0) scale(1);
  }
  to {
    transform: translate(-6vw, -4vh) scale(1.1);
  }
}

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  transform-origin: 0 50%;
  transform: scaleX(0);
  z-index: 30;
  background: linear-gradient(90deg, var(--primary), var(--primary-2), var(--primary-3));
  box-shadow: 0 0 15px rgba(78, 121, 255, 0.6);
}

.cursor-glow {
  position: fixed;
  width: 16rem;
  aspect-ratio: 1;
  border-radius: 50%;
  pointer-events: none;
  z-index: 2;
  opacity: 0.28;
  mix-blend-mode: screen;
  filter: blur(35px);
  background: radial-gradient(circle, rgba(120, 156, 255, 0.55) 0%, rgba(120, 156, 255, 0) 72%);
  transform: translate(-50%, -50%);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 15;
  backdrop-filter: blur(16px);
  background: linear-gradient(to bottom, rgba(5, 8, 17, 0.82), rgba(5, 8, 17, 0.18));
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: background 0.45s var(--ease-smooth), border-color 0.45s var(--ease-smooth);
}

.site-header.scrolled {
  background: linear-gradient(to bottom, rgba(4, 7, 14, 0.93), rgba(4, 7, 14, 0.46));
  border-bottom-color: rgba(255, 255, 255, 0.18);
}

.nav-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 4.4rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-mark {
  width: 2rem;
  aspect-ratio: 1;
  display: grid;
  place-content: center;
  border-radius: 0.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #f7f9ff;
  box-shadow: 0 8px 20px rgba(68, 97, 255, 0.35);
}

.brand-text {
  display: grid;
  line-height: 1.1;
}

.brand-text strong {
  font-size: 1rem;
  letter-spacing: 0.03em;
}

.brand-text small {
  color: var(--muted);
  font-size: 0.72rem;
}

.nav {
  display: flex;
  gap: 1.4rem;
  font-size: 0.92rem;
}

.nav a {
  color: var(--muted);
  transition: color 0.2s ease;
}

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

.lang-switch {
  display: inline-flex;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  border-radius: 999px;
  padding: 0.2rem;
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  font-size: 0.78rem;
  line-height: 1;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
  transition: color 0.25s var(--ease-smooth), background 0.25s var(--ease-smooth);
}

.lang-btn.active {
  color: var(--text);
  background: rgba(120, 140, 255, 0.22);
}

.hero-grid {
  display: grid;
  gap: clamp(1.4rem, 3.8vw, 3.4rem);
  grid-template-columns: 1.2fr 0.8fr;
  align-items: end;
}

.eyebrow {
  margin: 0 0 0.9rem;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #9fb2ff;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 4.3vw, 3.9rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

h1 .accent {
  background: linear-gradient(90deg, #bad7ff, #87a7ff 45%, #86ecff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  margin-top: 1.35rem;
  max-width: 56ch;
  color: var(--muted);
  line-height: 1.8;
}

.hero-actions {
  margin-top: 2.2rem;
  display: flex;
  gap: 0.9rem;
}

.btn {
  border: 1px solid var(--line);
  padding: 0.8rem 1.2rem;
  border-radius: 999px;
  font-size: 0.93rem;
  transition: transform 0.35s var(--ease-smooth), border-color 0.35s var(--ease-smooth),
    background 0.35s var(--ease-smooth);
  will-change: transform;
}

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

.btn-primary {
  background: linear-gradient(130deg, #6379ff, #2cc5ff);
  color: #f8fbff;
  border-color: transparent;
  box-shadow: 0 12px 30px rgba(65, 115, 255, 0.35);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.02);
}

.hero-panel {
  position: relative;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.03));
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.2rem;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(130deg, rgba(120, 156, 255, 0.7), rgba(57, 198, 255, 0.12));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.panel-tag {
  margin: 0;
  color: #9db3ff;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-panel h3 {
  margin-top: 0.7rem;
  margin-bottom: 0.7rem;
  font-size: 1.35rem;
  line-height: 1.32;
}

.hero-panel p:last-child {
  color: var(--muted);
  line-height: 1.8;
}

.section-heading h2 {
  font-size: clamp(1.5rem, 2.4vw, 2.25rem);
}

.section-heading p:last-child {
  margin-top: 0.8rem;
  color: var(--muted);
  line-height: 1.75;
}

.about-grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.glass-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.3rem;
  background: var(--panel);
  backdrop-filter: blur(8px);
  transition: transform 0.4s var(--ease-smooth), border-color 0.35s var(--ease-smooth);
}

.glass-card h3 {
  margin-bottom: 0.7rem;
  font-size: 1.05rem;
}

.glass-card p {
  color: var(--muted);
  line-height: 1.8;
}

.service-grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.service-card {
  position: relative;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.03));
  border-radius: 1rem;
  padding: 1.3rem;
  transition: border-color 0.35s var(--ease-smooth), transform 0.35s var(--ease-smooth);
}

.service-card:hover {
  border-color: rgba(144, 181, 255, 0.6);
  transform: translateY(-5px);
}

.service-card h3 {
  margin-bottom: 0.7rem;
  font-size: 1.04rem;
}

.service-card p {
  color: var(--muted);
  line-height: 1.8;
}

.pillars {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.pillar {
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1.3rem;
  background: rgba(7, 13, 27, 0.86);
  transition: transform 0.35s var(--ease-smooth), border-color 0.35s var(--ease-smooth);
}

.pillar span {
  font-size: 0.78rem;
  color: #9bb4ff;
}

.pillar h3 {
  margin-top: 0.45rem;
  margin-bottom: 0.55rem;
}

.pillar p {
  color: var(--muted);
  line-height: 1.75;
}

.section-contact {
  padding-bottom: 5.8rem;
}

.contact-wrap {
  border: 1px solid var(--line);
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  border-radius: 1.2rem;
  padding: clamp(1.2rem, 3vw, 2rem);
}

.contact-grid {
  margin-top: 1.4rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.contact-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  padding: 1.1rem;
  transition: transform 0.35s var(--ease-smooth), border-color 0.35s var(--ease-smooth);
}

.is-hidden {
  display: none !important;
}

.contact-card h3 {
  margin-bottom: 0.65rem;
  font-size: 1rem;
}

.contact-card p {
  color: var(--muted);
  line-height: 1.8;
}

.mail-link {
  margin-top: 1.2rem;
  display: inline-flex;
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  border: 1px solid rgba(123, 140, 255, 0.5);
  color: #c8d3ff;
  transition: transform 0.3s var(--ease-smooth), background 0.3s var(--ease-smooth);
}

.mail-link:hover {
  transform: translateY(-2px);
  background: rgba(125, 148, 255, 0.11);
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(5, 8, 17, 0.66);
}

.footer-wrap {
  min-height: 4.2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-domain {
  letter-spacing: 0.1em;
}

.reveal {
  opacity: 0;
  transform: translateY(18px) scale(0.985);
  filter: blur(4px);
  transition: opacity 0.85s var(--ease-smooth), transform 0.85s var(--ease-smooth),
    filter 0.85s var(--ease-smooth);
}

.reveal.in {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
}

.interactive {
  transform-style: preserve-3d;
  will-change: transform;
}

@media (max-width: 980px) {
  .hero-grid,
  .about-grid,
  .pillars,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

  .nav {
    display: none;
  }

  .cursor-glow {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

.error-main {
  min-height: calc(100vh - 8.6rem);
  display: grid;
  place-items: center;
  padding: 2rem 0 3rem;
}

.error-wrap {
  width: min(860px, calc(100vw - 3rem));
}

.error-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  padding: clamp(1.35rem, 3.2vw, 2.2rem);
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.error-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(120deg, rgba(124, 162, 255, 0.74), rgba(57, 198, 255, 0.1));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.error-label {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.76rem;
  color: #9bb4ff;
}

.error-code {
  margin: 0.55rem 0 0;
  font-size: clamp(3rem, 11vw, 6.3rem);
  line-height: 0.96;
  letter-spacing: -0.03em;
  background: linear-gradient(90deg, #d9e6ff 10%, #9cb7ff 44%, #88efff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.error-title {
  margin-top: 0.8rem;
  font-size: clamp(1.35rem, 2.7vw, 2rem);
}

.error-desc {
  margin-top: 0.8rem;
  max-width: 62ch;
  color: var(--muted);
  line-height: 1.8;
}

.error-actions {
  margin-top: 1.35rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.error-note {
  margin-top: 1rem;
  color: #9ca9c8;
  font-size: 0.9rem;
  line-height: 1.75;
}

.error-status {
  margin-top: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.46rem 0.72rem;
  border-radius: 999px;
  font-size: 0.78rem;
  border: 1px solid rgba(119, 139, 194, 0.48);
  color: #c7d6ff;
  background: rgba(255, 255, 255, 0.03);
}