:root {
  color-scheme: dark;
  --color-bg: #05070c;
  --color-bg-elevated: #090d15;
  --color-surface: rgba(255, 255, 255, 0.045);
  --color-surface-strong: rgba(255, 255, 255, 0.075);
  --color-border: rgba(255, 255, 255, 0.12);
  --color-border-soft: rgba(255, 255, 255, 0.075);
  --color-text: #f5f7fb;
  --color-text-secondary: #aab3c3;
  --color-text-muted: #7d8798;
  --color-accent: #6291ff;
  --color-accent-light: #83d7ff;
  --color-accent-deep: #284cc7;
  --container: 1200px;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --section-space: clamp(6.5rem, 12vw, 11rem);
  --radius-large: 2rem;
  --radius-medium: 1.5rem;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 14% 3%, rgba(62, 88, 190, 0.11), transparent 27rem),
    radial-gradient(circle at 90% 44%, rgba(49, 120, 219, 0.075), transparent 34rem),
    var(--color-bg);
  color: var(--color-text);
  font-family:
    -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a:focus-visible {
  border-radius: 0.25rem;
  outline: 2px solid var(--color-accent-light);
  outline-offset: 5px;
}

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

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.65rem 1rem;
  border-radius: 0.65rem;
  background: var(--color-text);
  color: var(--color-bg);
  font-weight: 600;
  transform: translateY(-150%);
  transition: transform 180ms var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
}

.container {
  width: min(100%, calc(var(--container) + var(--gutter) * 2));
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255, 255, 255, 0.055);
  background: rgba(5, 7, 12, 0.68);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
}

.nav-container {
  display: flex;
  width: min(100%, calc(var(--container) + var(--gutter) * 2));
  height: 4.5rem;
  margin: 0 auto;
  padding-inline: var(--gutter);
  align-items: center;
  justify-content: space-between;
}

.wordmark,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text);
  font-size: 0.93rem;
  font-weight: 650;
  letter-spacing: 0.06em;
}

.wordmark {
  min-height: 2.75rem;
}

.wordmark-mark {
  position: relative;
  width: 0.72rem;
  height: 0.72rem;
  flex: 0 0 auto;
  border: 1px solid rgba(144, 209, 255, 0.65);
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow:
    0 0 0 0.28rem rgba(98, 145, 255, 0.1),
    0 0 1.3rem rgba(98, 145, 255, 0.8);
}

.wordmark-mark::after {
  position: absolute;
  top: -0.2rem;
  right: -0.2rem;
  width: 0.27rem;
  height: 0.27rem;
  border-radius: 50%;
  background: var(--color-accent-light);
  content: "";
}

.nav-links {
  display: flex;
  margin: 0;
  padding: 0;
  align-items: center;
  gap: clamp(1.15rem, 3vw, 2.5rem);
  list-style: none;
}

.nav-links a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  color: var(--color-text-secondary);
  font-size: 0.88rem;
  transition: color 180ms ease;
}

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

.hero {
  position: relative;
  display: grid;
  min-height: 100dvh;
  padding: 9rem 0 5.5rem;
  overflow: hidden;
  place-items: center;
  isolation: isolate;
}

.hero::before {
  position: absolute;
  inset: 0;
  z-index: -3;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 5.25rem 5.25rem;
  content: "";
  mask-image: linear-gradient(to bottom, transparent, black 28%, transparent 88%);
}

.hero::after {
  position: absolute;
  top: 49%;
  left: 50%;
  z-index: -2;
  width: min(76vw, 66rem);
  aspect-ratio: 1;
  border: 1px solid rgba(120, 176, 255, 0.09);
  border-radius: 50%;
  box-shadow:
    0 0 0 5rem rgba(111, 162, 255, 0.018),
    0 0 0 10rem rgba(111, 162, 255, 0.012);
  content: "";
  transform: translate(-50%, -50%);
}

.hero-glow {
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(10px);
  opacity: 0.75;
  animation: ambient-drift 14s ease-in-out infinite alternate;
}

.hero-glow-primary {
  top: 16%;
  left: 48%;
  width: min(42rem, 68vw);
  height: min(42rem, 68vw);
  background: radial-gradient(circle, rgba(72, 105, 255, 0.27), transparent 68%);
}

.hero-glow-secondary {
  right: 3%;
  bottom: 3%;
  width: min(30rem, 55vw);
  height: min(30rem, 55vw);
  background: radial-gradient(circle, rgba(75, 188, 255, 0.16), transparent 68%);
  animation-delay: -7s;
}

.hero-content {
  text-align: center;
  animation: hero-enter 900ms var(--ease-out) both;
}

.eyebrow {
  margin-bottom: 1.25rem;
  color: var(--color-accent-light);
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-eyebrow {
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.hero h1 {
  max-width: none;
  margin-inline: auto;
  margin-bottom: 2.25rem;
  font-size: clamp(3.25rem, 8.4vw, 7.25rem);
  font-weight: 690;
  letter-spacing: -0.075em;
  line-height: 0.98;
}

.hero h1 span {
  display: block;
  margin-top: 0.14em;
  background: linear-gradient(110deg, #f7f9ff 8%, #8bb4ff 52%, #76ddff 92%);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

.hero-copy {
  max-width: 43rem;
  margin: 0 auto 2rem;
  color: var(--color-text-secondary);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  line-height: 1.8;
}

.hero-meta {
  display: inline-flex;
  min-height: 2.75rem;
  padding: 0.45rem 1rem;
  border: 1px solid var(--color-border-soft);
  border-radius: 999px;
  align-items: center;
  gap: 0.8rem;
  background: rgba(8, 12, 20, 0.54);
  color: var(--color-text-muted);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
}

.hero-meta span[aria-hidden="true"] {
  width: 0.2rem;
  height: 0.2rem;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0.65rem rgba(98, 145, 255, 0.9);
}

.scroll-indicator {
  position: absolute;
  bottom: 1.75rem;
  left: 50%;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text-muted);
  transform: translateX(-50%);
}

.scroll-indicator span {
  display: block;
  width: 2.5rem;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--color-accent-light));
  background-size: 200% 100%;
  animation: line-shimmer 2.6s ease-in-out infinite;
}

.scroll-indicator p {
  margin: 0;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
}

.section {
  position: relative;
  padding-block: var(--section-space);
}

.section-heading {
  max-width: 50rem;
  margin-bottom: clamp(3.5rem, 7vw, 6rem);
}

.section-heading h2,
.philosophy-heading h2 {
  margin-bottom: 1.65rem;
  font-size: clamp(2.65rem, 6vw, 5.25rem);
  font-weight: 650;
  letter-spacing: -0.065em;
  line-height: 1.04;
}

.section-heading > p:last-child {
  max-width: 39rem;
  margin-bottom: 0;
  color: var(--color-text-secondary);
  font-size: clamp(1rem, 1.6vw, 1.16rem);
}

.services {
  border-top: 1px solid var(--color-border-soft);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.service-card {
  display: flex;
  min-height: 0;
  padding: clamp(1.75rem, 4vw, 3rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  justify-content: flex-start;
  flex-direction: column;
  gap: clamp(1.5rem, 3vw, 2rem);
  background:
    linear-gradient(140deg, rgba(255, 255, 255, 0.065), transparent 45%),
    var(--color-surface);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.055);
  transition:
    border-color 260ms ease,
    background-color 260ms ease,
    transform 260ms var(--ease-out);
}

.service-card:hover {
  border-color: rgba(128, 169, 255, 0.28);
  background-color: rgba(255, 255, 255, 0.018);
  transform: translateY(-0.3rem);
}

.card-topline {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.card-number,
.principle-index {
  color: var(--color-text-muted);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

.card-rule {
  height: 1px;
  flex: 1;
  background: linear-gradient(to right, var(--color-border), transparent);
}

.card-label {
  margin-bottom: 0.7rem;
  color: var(--color-accent-light);
  font-size: 0.69rem;
  font-weight: 650;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.service-card h3 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 4vw, 3.15rem);
  font-weight: 620;
  letter-spacing: -0.05em;
}

.service-card > div:last-child > p:last-child {
  max-width: 28rem;
  margin-bottom: 0;
  color: var(--color-text-secondary);
}

.product {
  overflow: hidden;
  background: linear-gradient(
    to bottom,
    transparent,
    rgba(17, 28, 59, 0.22) 48%,
    transparent
  );
}

.product-heading {
  display: grid;
  margin-bottom: clamp(3.5rem, 7vw, 5.5rem);
  grid-template-columns: minmax(0, 1.2fr) minmax(18rem, 0.8fr);
  align-items: end;
  gap: 3rem;
}

.product-heading h2 {
  margin: 0;
  background: linear-gradient(110deg, var(--color-text), #91b8ff 70%, #85ddff);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  font-size: clamp(3.1rem, 7.2vw, 6.8rem);
  font-weight: 700;
  letter-spacing: -0.07em;
  line-height: 0.98;
  text-wrap: balance;
}

.product-heading > p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: clamp(1rem, 1.7vw, 1.16rem);
}

.product-visual {
  position: relative;
  display: grid;
  min-height: clamp(31rem, 62vw, 45rem);
  margin-bottom: 1.25rem;
  overflow: hidden;
  border: 1px solid rgba(133, 179, 255, 0.2);
  border-radius: var(--radius-large);
  background:
    linear-gradient(rgba(255, 255, 255, 0.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.026) 1px, transparent 1px),
    radial-gradient(circle at 50% 52%, rgba(64, 96, 222, 0.25), transparent 28%),
    linear-gradient(140deg, #080c17, #05070c);
  background-size:
    4rem 4rem,
    4rem 4rem,
    auto,
    auto;
  place-items: center;
}

.product-visual::before {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(115, 209, 255, 0.12), transparent 23%),
    radial-gradient(circle at 80% 82%, rgba(91, 102, 255, 0.16), transparent 24%);
  content: "";
}

.product-aura {
  position: absolute;
  width: min(28rem, 52vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(107, 160, 255, 0.2), transparent 67%);
  filter: blur(12px);
  animation: aura-breathe 6s ease-in-out infinite alternate;
}

.orbit {
  position: absolute;
  aspect-ratio: 1;
  border: 1px solid rgba(142, 190, 255, 0.16);
  border-radius: 50%;
}

.orbit::after {
  position: absolute;
  top: 8.5%;
  right: 18%;
  width: 0.48rem;
  height: 0.48rem;
  border-radius: 50%;
  background: var(--color-accent-light);
  box-shadow: 0 0 1.2rem rgba(131, 215, 255, 0.95);
  content: "";
}

.orbit-outer {
  width: min(48rem, 78vw);
  transform: rotate(-18deg);
  animation: orbit-spin 34s linear infinite;
}

.orbit-inner {
  width: min(33rem, 54vw);
  border-style: dashed;
  transform: rotate(23deg);
  animation: orbit-spin-reverse 26s linear infinite;
}

.orbit-inner::after {
  top: auto;
  right: auto;
  bottom: 3.8%;
  left: 31%;
  background: var(--color-accent);
}

.product-word {
  position: relative;
  z-index: 2;
  text-align: center;
}

.product-word span,
.product-word p {
  color: var(--color-text-muted);
  font-size: clamp(0.58rem, 1.2vw, 0.75rem);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.product-word strong {
  display: block;
  margin-block: 0.25rem;
  text-shadow: 0 0 3.5rem rgba(78, 137, 255, 0.4);
  font-size: clamp(2.4rem, 7vw, 6rem);
  letter-spacing: -0.065em;
  line-height: 1;
}

.visual-tag {
  position: absolute;
  z-index: 2;
  padding: 0.65rem 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  background: rgba(8, 13, 25, 0.78);
  box-shadow: 0 0.75rem 2.5rem rgba(0, 0, 0, 0.25);
  color: var(--color-text-secondary);
  font-size: 0.75rem;
  backdrop-filter: blur(10px);
}

.visual-tag-one {
  top: 19%;
  left: 12%;
}

.visual-tag-two {
  top: 25%;
  right: 12%;
}

.visual-tag-three {
  right: 19%;
  bottom: 16%;
}

.capability-grid {
  display: grid;
  margin-bottom: 1.25rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.capability-grid article {
  min-height: 0;
  padding: 1.75rem;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-medium);
  background: rgba(255, 255, 255, 0.026);
}

.capability-grid article > span {
  display: inline-block;
  margin-bottom: 1.25rem;
  color: var(--color-accent-light);
  font-size: 0.67rem;
  letter-spacing: 0.12em;
}

.capability-grid h3,
.admin-panel h3,
.principle-grid h3 {
  margin-bottom: 0.65rem;
  font-size: 1.35rem;
  font-weight: 610;
  letter-spacing: -0.025em;
}

.capability-grid p,
.admin-panel > p,
.principle-grid p {
  margin-bottom: 0;
  color: var(--color-text-secondary);
  font-size: 0.93rem;
}

.admin-panel {
  display: grid;
  padding: clamp(2rem, 5vw, 3.5rem);
  border: 1px solid rgba(111, 160, 255, 0.16);
  border-radius: var(--radius-large);
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.85fr);
  align-items: end;
  gap: 3rem;
  background:
    radial-gradient(circle at 8% 10%, rgba(92, 133, 255, 0.13), transparent 35%),
    var(--color-surface);
}

.admin-panel h3 {
  max-width: 13ch;
  margin: 0;
  font-size: clamp(1.9rem, 4vw, 3rem);
  letter-spacing: -0.05em;
  line-height: 1.15;
}

.philosophy {
  border-top: 1px solid var(--color-border-soft);
}

.philosophy-heading {
  margin-bottom: clamp(3.5rem, 7vw, 6rem);
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--color-border-soft);
}

.principle-grid article {
  min-height: 0;
  padding: clamp(1.75rem, 3.5vw, 2.75rem);
  background: var(--color-bg);
}

.principle-index {
  display: block;
  margin-bottom: 1.5rem;
  color: var(--color-accent-light);
}

.site-footer {
  border-top: 1px solid var(--color-border-soft);
  padding-block: 3rem;
}

.footer-content {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 3rem;
}

.footer-brand {
  color: var(--color-text-secondary);
}

.legal {
  display: flex;
  align-items: flex-end;
  flex-direction: column;
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

.legal p {
  margin-bottom: 0.25rem;
}

.legal a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  transition: color 180ms ease;
}

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

@keyframes hero-enter {
  from {
    opacity: 0;
    transform: translateY(1.15rem);
  }

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

@keyframes ambient-drift {
  from {
    transform: translate3d(-3%, -2%, 0) scale(0.96);
  }

  to {
    transform: translate3d(4%, 3%, 0) scale(1.06);
  }
}

@keyframes line-shimmer {
  0%,
  100% {
    background-position: 100% 0;
    opacity: 0.45;
  }

  50% {
    background-position: 0 0;
    opacity: 1;
  }
}

@keyframes aura-breathe {
  from {
    opacity: 0.65;
    transform: scale(0.92);
  }

  to {
    opacity: 1;
    transform: scale(1.08);
  }
}

@keyframes orbit-spin {
  from {
    transform: rotate(-18deg);
  }

  to {
    transform: rotate(342deg);
  }
}

@keyframes orbit-spin-reverse {
  from {
    transform: rotate(23deg);
  }

  to {
    transform: rotate(-337deg);
  }
}

@keyframes content-reveal {
  from {
    opacity: 0;
    transform: translateY(1.5rem);
  }

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

@keyframes fade-reveal {
  from {
    opacity: 0.18;
  }

  to {
    opacity: 1;
  }
}

@supports (animation-timeline: view()) {
  .section-heading > *,
  .product-heading > *,
  .product-visual,
  .product-word,
  .admin-panel > * {
    animation: content-reveal linear both;
    animation-timeline: view();
    animation-range: entry 8% cover 30%;
  }

  .service-card > div:last-child,
  .capability-grid article,
  .principle-grid article {
    animation: fade-reveal linear both;
    animation-timeline: view();
    animation-range: entry 5% cover 22%;
  }
}

@media (min-width: 520px) {
  .hero h1 span {
    white-space: nowrap;
  }
}

@media (max-width: 900px) {
  .service-grid,
  .product-heading,
  .admin-panel {
    grid-template-columns: 1fr;
  }

  .product-heading {
    align-items: start;
    gap: 2rem;
  }

  .product-heading > p {
    max-width: 35rem;
  }

  .capability-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

}

@media (max-width: 640px) {
  :root {
    --radius-large: 1.5rem;
    --radius-medium: 1.15rem;
  }

  html {
    scroll-padding-top: 5rem;
  }

  .nav-container {
    height: 4rem;
  }

  .wordmark {
    gap: 0.55rem;
    font-size: 0.78rem;
    letter-spacing: 0.03em;
  }

  .nav-links {
    gap: 0.9rem;
  }

  .nav-links a {
    font-size: 0.78rem;
  }

  .hero {
    min-height: 46rem;
    padding-top: 7.5rem;
  }

  .hero::before {
    background-size: 3.5rem 3.5rem;
  }

  .hero::after {
    width: 105vw;
  }

  .hero h1 {
    font-size: clamp(3rem, 14vw, 4.1rem);
  }

  .hero-copy br {
    display: none;
  }

  .hero-meta {
    width: 100%;
    justify-content: center;
    gap: 0.6rem;
    font-size: 0.68rem;
  }

  .scroll-indicator {
    bottom: 1.25rem;
  }

  .product-visual {
    min-height: 28rem;
    background-size:
      3rem 3rem,
      3rem 3rem,
      auto,
      auto;
  }

  .orbit-outer {
    width: 115vw;
  }

  .orbit-inner {
    width: 82vw;
  }

  .visual-tag {
    padding: 0.5rem 0.7rem;
    font-size: 0.65rem;
  }

  .visual-tag-one {
    top: 16%;
    left: 5%;
  }

  .visual-tag-two {
    top: 24%;
    right: 4%;
  }

  .visual-tag-three {
    right: 8%;
    bottom: 13%;
  }

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

  .footer-content {
    align-items: flex-start;
    flex-direction: column;
    gap: 2rem;
  }

  .legal {
    align-items: flex-start;
  }
}

@media (max-width: 519px) {
  .hero h1 span {
    max-width: 6.4em;
    margin-inline: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .hero-glow,
  .scroll-indicator span,
  .product-aura,
  .orbit,
  .section-heading > *,
  .product-heading > *,
  .service-card > div:last-child,
  .product-visual,
  .product-word,
  .admin-panel > *,
  .capability-grid article,
  .principle-grid article {
    animation: none !important;
  }
}