:root {
  --bg: #07131f;
  --bg-soft: #0b1b2b;
  --panel: rgba(10, 24, 38, 0.82);
  --panel-strong: rgba(7, 17, 28, 0.94);
  --line: rgba(121, 193, 214, 0.16);
  --line-strong: rgba(121, 193, 214, 0.3);
  --text: #eff8ff;
  --muted: #93aab9;
  --accent: #53e0d1;
  --accent-strong: #15b8f1;
  --accent-warm: #f2c169;
  --shadow: 0 28px 70px rgba(0, 0, 0, 0.36);
  --radius-xl: 34px;
  --radius-lg: 26px;
  --radius-md: 18px;
  --container: min(1180px, calc(100vw - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: "Plus Jakarta Sans", sans-serif;
  background:
    radial-gradient(circle at 0% 15%, rgba(24, 89, 124, 0.32), transparent 32%),
    radial-gradient(circle at 100% 0%, rgba(21, 184, 241, 0.15), transparent 28%),
    linear-gradient(180deg, #04101a 0%, #07131f 28%, #06131d 100%);
}

body.intro-active {
  overflow: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(132, 194, 221, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(132, 194, 221, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.45), transparent 88%);
  pointer-events: none;
  opacity: 0.5;
}

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

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

code {
  padding: 0.2rem 0.42rem;
  border: 1px solid rgba(115, 193, 240, 0.18);
  border-radius: 999px;
  background: rgba(8, 17, 28, 0.68);
  font-size: 0.88em;
}

.site-shell {
  position: relative;
  z-index: 1;
}

.intro-splash {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  gap: 18px;
  background:
    radial-gradient(circle at center, rgba(13, 51, 74, 0.72), rgba(4, 13, 22, 0.98) 58%),
    linear-gradient(180deg, rgba(4, 13, 22, 0.96), rgba(4, 13, 22, 0.99));
  opacity: 1;
  transition: opacity 1100ms ease;
}

.intro-splash::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(132, 194, 221, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(132, 194, 221, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 0.95), transparent 78%);
  opacity: 0.55;
}

.intro-splash__halo {
  position: absolute;
  width: min(72vw, 860px);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(83, 224, 209, 0.18), rgba(21, 184, 241, 0.08) 42%, transparent 72%);
  filter: blur(16px);
  animation: intro-halo-pulse 2.6s ease-in-out infinite;
}

.intro-splash__logo,
.intro-splash__wordmark {
  position: relative;
  z-index: 1;
}

.intro-splash__logo {
  width: clamp(180px, 24vw, 340px);
  height: auto;
  filter: drop-shadow(0 28px 60px rgba(0, 0, 0, 0.42));
  transform: translate3d(0, 0, 0) scale(1);
  transform-origin: center;
  transition:
    transform 1.45s cubic-bezier(0.2, 0.9, 0.2, 1),
    opacity 0.52s ease;
}

.intro-splash__wordmark {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.3rem, 2vw, 2rem);
  letter-spacing: 0.44em;
  text-transform: uppercase;
  color: #ddfaff;
  animation: intro-wordmark-fade 2.1s ease forwards;
}

body.intro-transition .intro-splash__logo {
  transform:
    translate3d(var(--intro-target-x, 0px), var(--intro-target-y, 0px), 0)
    scale(var(--intro-target-scale, 0.3));
}

body.intro-fade .intro-splash__logo,
body.intro-fade .intro-splash__wordmark {
  opacity: 0;
}

body.intro-fade .intro-splash {
  opacity: 0;
  pointer-events: none;
}

.topbar,
.section,
.footer {
  width: var(--container);
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 18px;
  padding: 16px 20px;
  border: 1px solid rgba(115, 193, 240, 0.12);
  border-radius: 999px;
  background: rgba(4, 13, 22, 0.7);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 54px;
  height: 54px;
  flex: 0 0 auto;
}

.brand-mark--hoverable {
  opacity: 1;
  transition: transform 220ms ease;
}

body.intro-active .brand-mark--hoverable,
body.intro-transition .brand-mark--hoverable {
  opacity: 0;
}

body.intro-fade .brand-mark--hoverable,
body.intro-complete .brand-mark--hoverable {
  opacity: 1;
  transition:
    opacity 700ms ease,
    transform 220ms ease;
}

.brand:hover .brand-mark--hoverable,
.brand:focus-visible .brand-mark--hoverable {
  transform: scale(1.05);
}

.brand:hover .brand-mark--hoverable .sispec-logo__ecg,
.brand:focus-visible .brand-mark--hoverable .sispec-logo__ecg {
  animation: sispec-ecg-draw 1.8s ease-in-out infinite;
}

.brand:hover .brand-mark--hoverable .sispec-logo__ring--spin-cw,
.brand:focus-visible .brand-mark--hoverable .sispec-logo__ring--spin-cw {
  animation: sispec-spin-cw 18s linear infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.brand:hover .brand-mark--hoverable .sispec-logo__ring--spin-ccw,
.brand:focus-visible .brand-mark--hoverable .sispec-logo__ring--spin-ccw {
  animation: sispec-spin-ccw 13s linear infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.brand:hover .brand-mark--hoverable .sispec-logo__ring--spin-cw-fast,
.brand:focus-visible .brand-mark--hoverable .sispec-logo__ring--spin-cw-fast {
  animation: sispec-spin-cw 9s linear infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.brand:hover .brand-mark--hoverable .sispec-logo__node,
.brand:focus-visible .brand-mark--hoverable .sispec-logo__node {
  animation: sispec-node-pulse 2.2s ease-in-out infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-copy strong,
.eyebrow,
h1,
h2,
h3,
.button,
.menu-tab,
.tab-chip,
.contact-email {
  font-family: "Space Grotesk", sans-serif;
}

.brand-copy strong {
  font-size: 1rem;
  letter-spacing: 0.1em;
}

.brand-copy small {
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.1;
}

.menu {
  display: flex;
  align-items: center;
  gap: 10px;
}

.menu-tab {
  min-height: 42px;
  padding: 0 14px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-size: 0.95rem;
  cursor: pointer;
  transition:
    color 180ms ease,
    background 180ms ease;
}

.menu-tab:hover,
.menu-tab:focus-visible,
.menu-tab.is-active {
  color: var(--text);
  background: rgba(14, 36, 52, 0.72);
}

.menu-toggle {
  display: none;
}

.section {
  padding: 108px 0 0;
}

.tab-shell {
  padding-top: 72px;
}

.tab-stage {
  position: relative;
  min-height: 760px;
}

.tab-panel {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.987);
  pointer-events: none;
  transition:
    opacity 380ms ease,
    transform 380ms ease,
    visibility 0s linear 380ms;
}

.tab-panel.is-exiting {
  opacity: 0;
  visibility: visible;
  transform: translateY(-10px) scale(0.992);
  pointer-events: none;
  transition:
    opacity 260ms ease,
    transform 260ms ease,
    visibility 0s linear 260ms;
}

.tab-panel.is-active {
  position: relative;
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  pointer-events: auto;
  transition:
    opacity 420ms ease,
    transform 420ms ease,
    visibility 0s linear 0s;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr);
  align-items: center;
  gap: 44px;
  min-height: calc(100vh - 110px);
  padding-top: 52px;
}

.hero-copy {
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.hero-copy.is-updating {
  opacity: 0.46;
  transform: translateY(6px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #c7f5ff;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
  box-shadow: 0 0 18px rgba(83, 224, 209, 0.48);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.02;
}

h1 {
  margin-top: 20px;
  font-size: clamp(3rem, 5.8vw, 6rem);
  max-width: 12ch;
}

h1 span {
  color: #91ebff;
}

.hero-text,
.statement p,
.module-card p,
.benefit-card p,
.arch-card p,
.security-card p,
.timeline-item p,
.contact-card p,
.contact-copy p {
  color: var(--muted);
  line-height: 1.75;
  font-size: 1.02rem;
}

.hero-text {
  max-width: 61ch;
  margin: 28px 0 0;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.98rem;
  letter-spacing: 0.03em;
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
  color: #04111b;
  box-shadow: 0 22px 48px rgba(21, 184, 241, 0.24);
}

.button-secondary {
  border-color: rgba(115, 193, 240, 0.22);
  background: rgba(8, 19, 31, 0.42);
}

.hero-points {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.hero-points li {
  position: relative;
  padding-left: 24px;
  color: #cce4f4;
}

.hero-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(180deg, var(--accent), var(--accent-warm));
}

.hero-visual {
  position: relative;
}

.hero-glow {
  position: absolute;
  inset: 4% 8% auto;
  height: 54%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(21, 184, 241, 0.16), transparent 68%);
  filter: blur(20px);
}

.hero-visual img {
  position: relative;
  border: 1px solid rgba(115, 193, 240, 0.16);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.floating-card {
  position: absolute;
  max-width: 290px;
  padding: 18px 18px 16px;
  border: 1px solid rgba(115, 193, 240, 0.16);
  border-radius: 20px;
  background: rgba(8, 18, 29, 0.84);
  box-shadow: 0 22px 52px rgba(0, 0, 0, 0.38);
  backdrop-filter: blur(16px);
}

.floating-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 0.98rem;
}

.floating-card span {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.floating-card-main {
  left: -28px;
  bottom: 54px;
}

.floating-card-side {
  right: -12px;
  top: 30px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.metrics article,
.panel,
.module-card,
.timeline-panel,
.benefit-card,
.arch-card,
.security-card,
.contact-panel {
  border: 1px solid rgba(115, 193, 240, 0.12);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.metrics article {
  padding: 26px 22px;
  border-radius: 22px;
}

.metrics strong {
  display: block;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.4rem;
}

.metrics span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.6;
}

.section-heading {
  display: grid;
  gap: 16px;
  max-width: 860px;
  margin-bottom: 34px;
}

.section-heading h2 {
  font-size: clamp(2rem, 3.5vw, 4.3rem);
}

.statement-grid,
.operations-layout,
.security-grid,
.architecture-grid,
.contact-panel {
  display: grid;
  gap: 20px;
}

.statement-grid {
  grid-template-columns: 1.2fr 1fr;
}

.panel {
  padding: 34px;
  border-radius: var(--radius-lg);
}

.panel-contrast {
  background:
    linear-gradient(145deg, rgba(14, 43, 66, 0.92), rgba(8, 20, 31, 0.96)),
    var(--panel);
}

.modules-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.module-card {
  min-height: 258px;
  padding: 30px 26px;
  border-radius: 26px;
  background:
    linear-gradient(180deg, rgba(13, 33, 50, 0.94), rgba(8, 19, 31, 0.96)),
    var(--panel);
}

.module-kicker {
  display: inline-block;
  margin-bottom: 16px;
  color: #9fe7f9;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.module-card h3 {
  font-size: 1.45rem;
  margin-bottom: 14px;
}

.operations-layout {
  grid-template-columns: 1.05fr 0.95fr;
  align-items: start;
}

.timeline-panel {
  padding: 34px;
  border-radius: 32px;
}

.timeline-item + .timeline-item {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid rgba(115, 193, 240, 0.12);
}

.timeline-item strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.2rem;
}

.benefit-stack {
  display: grid;
  gap: 18px;
}

.benefit-card,
.arch-card,
.security-card {
  padding: 28px;
  border-radius: 24px;
}

.architecture-grid,
.security-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.arch-card,
.security-card {
  min-height: 236px;
}

.arch-card h3,
.security-card h3,
.benefit-card h3 {
  margin-bottom: 12px;
  font-size: 1.28rem;
}

.contact-panel {
  grid-template-columns: 1.2fr 0.8fr;
  align-items: stretch;
  padding: 34px;
  border-radius: 30px;
  background:
    radial-gradient(circle at top left, rgba(83, 224, 209, 0.1), transparent 30%),
    linear-gradient(180deg, rgba(11, 29, 45, 0.92), rgba(7, 19, 31, 0.96));
}

.contact-copy {
  display: grid;
  align-content: start;
  gap: 16px;
}

.contact-card {
  padding: 28px;
  border: 1px solid rgba(115, 193, 240, 0.14);
  border-radius: 24px;
  background: rgba(7, 17, 27, 0.78);
}

.contact-label {
  display: inline-block;
  color: #9fe7f9;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.contact-email {
  display: block;
  margin: 14px 0 12px;
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  color: #d5fbff;
  word-break: break-word;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 72px 0 42px;
  color: var(--muted);
}

.footer strong {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
}

.footer a {
  color: #bcefff;
}

.sispec-logo__ecg {
  stroke-dasharray: 1;
  stroke-dashoffset: 0;
}

.sispec-logo--animated .sispec-logo__ecg {
  animation: sispec-ecg-draw 1.8s ease-in-out infinite;
}

.sispec-logo--animated .sispec-logo__ring--spin-cw {
  animation: sispec-spin-cw 18s linear infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.sispec-logo--animated .sispec-logo__ring--spin-ccw {
  animation: sispec-spin-ccw 13s linear infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.sispec-logo--animated .sispec-logo__ring--spin-cw-fast {
  animation: sispec-spin-cw 9s linear infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.sispec-logo--animated .sispec-logo__node {
  animation: sispec-node-pulse 2.2s ease-in-out infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.sispec-logo--animated .sispec-logo__node:nth-child(2) {
  animation-delay: 0.25s;
}

.sispec-logo--animated .sispec-logo__node:nth-child(3) {
  animation-delay: 0.5s;
}

.sispec-logo--animated .sispec-logo__node:nth-child(4) {
  animation-delay: 0.75s;
}

.sispec-logo--animated .sispec-logo__node:nth-child(5) {
  animation-delay: 1s;
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 600ms ease,
    transform 600ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes sispec-ecg-draw {
  0% {
    stroke-dashoffset: 1;
    opacity: 0.55;
  }
  14% {
    opacity: 1;
  }
  45% {
    stroke-dashoffset: 0;
    opacity: 1;
  }
  72% {
    stroke-dashoffset: 0;
    opacity: 1;
  }
  100% {
    stroke-dashoffset: 1;
    opacity: 0.55;
  }
}

@keyframes sispec-spin-cw {
  to {
    transform: rotate(360deg);
  }
}

@keyframes sispec-spin-ccw {
  to {
    transform: rotate(-360deg);
  }
}

@keyframes sispec-node-pulse {
  0%,
  100% {
    opacity: 0.55;
    transform: scale(0.85);
  }
  50% {
    opacity: 1;
    transform: scale(1.15);
  }
}

@keyframes intro-wordmark-fade {
  0% {
    opacity: 0;
    transform: translateY(18px);
  }
  18%,
  68% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(-12px);
  }
}

@keyframes intro-halo-pulse {
  0%,
  100% {
    transform: scale(0.92);
    opacity: 0.82;
  }
  50% {
    transform: scale(1.04);
    opacity: 1;
  }
}

@media (max-width: 1120px) {
  .hero,
  .statement-grid,
  .operations-layout,
  .modules-grid,
  .architecture-grid,
  .security-grid,
  .metrics,
  .contact-panel {
    grid-template-columns: 1fr 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-copy,
  .hero-visual {
    grid-column: span 2;
  }

  .floating-card-main {
    left: 16px;
  }

  .floating-card-side {
    right: 16px;
  }

  .contact-copy,
  .contact-card {
    grid-column: span 2;
  }

  .tab-stage {
    min-height: 860px;
  }
}

@media (max-width: 860px) {
  .topbar {
    padding: 14px 16px;
    border-radius: 28px;
  }

  .menu-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 46px;
    height: 46px;
    border: 1px solid rgba(115, 193, 240, 0.16);
    border-radius: 14px;
    background: rgba(7, 19, 31, 0.84);
  }

  .menu-toggle span {
    width: 18px;
    height: 2px;
    margin: 0 auto;
    background: var(--text);
  }

  .menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px;
    border: 1px solid rgba(115, 193, 240, 0.14);
    border-radius: 24px;
    background: rgba(5, 14, 23, 0.96);
    box-shadow: var(--shadow);
  }

  .menu.is-open {
    display: flex;
  }

  .menu-tab {
    width: 100%;
    padding: 14px 8px;
    text-align: left;
  }

  .hero,
  .statement-grid,
  .operations-layout,
  .modules-grid,
  .architecture-grid,
  .security-grid,
  .metrics,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .hero-copy,
  .hero-visual,
  .contact-copy,
  .contact-card {
    grid-column: auto;
  }

  .section {
    padding-top: 82px;
  }

  .hero {
    padding-top: 36px;
  }

  h1 {
    max-width: none;
  }

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

  .tab-stage {
    min-height: auto;
  }

  .tab-panel,
  .tab-panel.is-exiting,
  .tab-panel.is-active {
    position: relative;
    visibility: visible;
    opacity: 1;
    transform: none;
    pointer-events: auto;
    transition: none;
  }

  .floating-card {
    position: static;
    max-width: none;
    margin-top: 18px;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
    padding-top: 54px;
  }
}

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

  body.intro-active {
    overflow: auto;
  }

  .intro-splash {
    display: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .button,
  .menu-tab,
  .sispec-logo--animated .sispec-logo__ecg,
  .sispec-logo--animated .sispec-logo__ring--spin-cw,
  .sispec-logo--animated .sispec-logo__ring--spin-ccw,
  .sispec-logo--animated .sispec-logo__ring--spin-cw-fast,
  .sispec-logo--animated .sispec-logo__node,
  .brand-mark--hoverable,
  .brand:hover .brand-mark--hoverable .sispec-logo__ecg,
  .brand:hover .brand-mark--hoverable .sispec-logo__ring--spin-cw,
  .brand:hover .brand-mark--hoverable .sispec-logo__ring--spin-ccw,
  .brand:hover .brand-mark--hoverable .sispec-logo__ring--spin-cw-fast,
  .brand:hover .brand-mark--hoverable .sispec-logo__node {
    transition: none;
    animation: none;
  }
}