:root {
  --blue-950: #10105b;
  --blue-900: #12156b;
  --blue-800: #102c77;
  --blue-700: #12418f;
  --panel: #f6f8fc;
  --panel-line: #dce2ee;
  --text: #ffffff;
  --ink: #24304a;
  --muted: #647089;
  --soft: #9aa5b8;
  --orange: #fb7416;
  --orange-dark: #ee650b;
  --white: #ffffff;
  --shadow: 0 28px 70px rgba(2, 8, 40, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family:
    Inter, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 88% 10%, rgba(255, 255, 255, 0.08) 0 18rem, transparent 18.2rem),
    linear-gradient(135deg, var(--blue-950), var(--blue-800) 58%, var(--blue-700));
}

a {
  color: inherit;
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px;
}

.panel {
  width: min(100%, 560px);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 16px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.index-panel {
  text-align: center;
  padding-top: 42px;
  background: linear-gradient(150deg, var(--blue-950), var(--blue-800));
}

.index-panel::before,
.content-panel::before {
  content: "";
  display: block;
  height: 8px;
  background: linear-gradient(90deg, var(--orange), #ff9b32);
}

.nova-mark,
.brand-mark {
  --nova-mark-size: 72px;
  --nova-mark-speed: 7s;
  position: relative;
  width: var(--nova-mark-size);
  height: var(--nova-mark-size);
  margin: 0 auto 14px;
  filter: drop-shadow(0 10px 22px rgba(0, 0, 0, 0.2));
}

.orbit {
  position: absolute;
  inset: calc(var(--nova-mark-size) * 0.125);
  border: 8px solid var(--white);
  border-radius: 50%;
  background: radial-gradient(circle, var(--orange) 0 16%, #f7c15a 17% 24%, #1c2e82 25% 45%, transparent 46%);
  box-shadow:
    inset 0 0 0 3px rgba(255, 255, 255, 0.24),
    0 8px 18px rgba(0, 0, 0, 0.2);
}

.spark {
  position: absolute;
  width: calc(var(--nova-mark-size) * 0.42);
  height: calc(var(--nova-mark-size) * 0.17);
  border-radius: 999px;
  background: var(--orange);
  box-shadow: 0 5px 12px rgba(251, 116, 22, 0.32);
  transform-origin: center;
}

.spark-one {
  left: calc(var(--nova-mark-size) * 0.04);
  bottom: calc(var(--nova-mark-size) * 0.25);
  transform: rotate(24deg);
}

.spark-two {
  right: calc(var(--nova-mark-size) * 0.055);
  bottom: calc(var(--nova-mark-size) * 0.11);
  transform: rotate(54deg);
}

.nova-mark.is-animated .orbit {
  animation: nova-orbit-pulse var(--nova-mark-speed) ease-in-out infinite;
}

.nova-mark.is-animated .spark-one {
  animation: nova-spark-one var(--nova-mark-speed) ease-in-out infinite;
}

.nova-mark.is-animated .spark-two {
  animation: nova-spark-two var(--nova-mark-speed) ease-in-out infinite;
}

.nova-mark.is-loading {
  animation: nova-loader-spin 1.4s linear infinite;
}

.nova-mark.is-loading .orbit {
  animation: nova-loading-pulse 1.4s ease-in-out infinite;
}

@keyframes nova-orbit-pulse {
  0%,
  100% {
    transform: scale(1);
  }

  45% {
    transform: scale(1.06);
  }

  62% {
    transform: scale(0.98);
  }
}

@keyframes nova-spark-one {
  0%,
  100% {
    transform: translate3d(0, 0, 0) rotate(24deg);
  }

  42% {
    transform: translate3d(-3px, -2px, 0) rotate(14deg);
  }

  68% {
    transform: translate3d(1px, 1px, 0) rotate(28deg);
  }
}

@keyframes nova-spark-two {
  0%,
  100% {
    transform: translate3d(0, 0, 0) rotate(54deg);
  }

  42% {
    transform: translate3d(4px, 3px, 0) rotate(64deg);
  }

  68% {
    transform: translate3d(-1px, -1px, 0) rotate(49deg);
  }
}

@keyframes nova-loader-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes nova-loading-pulse {
  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.72;
  }
}

@media (prefers-reduced-motion: reduce) {
  .nova-mark,
  .nova-mark * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

.brand {
  margin: 0 0 18px;
  color: var(--white);
  font-weight: 800;
  letter-spacing: 0;
}

.brand span {
  color: var(--orange);
}

.brand.small {
  margin: 0;
  color: var(--blue-950);
}

h1 {
  margin: 0;
  color: var(--white);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1;
  letter-spacing: 0;
}

.subtitle {
  margin: 18px 32px 32px;
  color: #c9d2e8;
  font-size: 1rem;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  padding: 32px;
  background: var(--panel);
}

.demo-card {
  min-height: 178px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  padding: 22px;
  text-align: left;
  text-decoration: none;
  border: 1px solid var(--panel-line);
  border-radius: 8px;
  background: var(--white);
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.demo-card:hover,
.demo-card:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(251, 116, 22, 0.5);
  box-shadow: 0 16px 34px rgba(13, 31, 84, 0.12);
  outline: none;
}

.demo-kicker,
.eyebrow {
  color: var(--orange-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.demo-card strong {
  color: var(--blue-950);
  font-size: 1.25rem;
}

.demo-card span:last-child {
  color: var(--muted);
  line-height: 1.5;
}

.content-panel {
  width: min(100%, 760px);
  padding: 0 0 34px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 24px 30px 0;
}

.back-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 16px;
  color: var(--white);
  text-decoration: none;
  font-weight: 800;
  border-radius: 8px;
  background: var(--orange);
}

.content-panel h1,
.content-panel .lead,
.content-panel .eyebrow {
  margin-left: 38px;
  margin-right: 38px;
}

.content-panel h1 {
  margin-top: 36px;
  color: var(--blue-950);
}

.eyebrow {
  margin-top: 40px;
  margin-bottom: 12px;
}

.lead {
  max-width: 650px;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.65;
}

.feature-list {
  display: grid;
  gap: 14px;
  margin: 32px 30px 0;
}

.feature-list.compact {
  margin-top: 20px;
}

.feature-row {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  padding: 20px;
  border: 1px solid var(--panel-line);
  border-radius: 8px;
  background: var(--white);
}

.feature-number {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  color: var(--orange-dark);
  font-weight: 900;
  border-radius: 50%;
  background: #fff0e6;
}

.feature-row h2 {
  margin: 0 0 8px;
  color: var(--blue-950);
  font-size: 1.05rem;
}

.feature-row p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.dashboard-preview {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 30px;
}

.metric {
  padding: 18px;
  border-radius: 8px;
  background: linear-gradient(180deg, var(--blue-900), var(--blue-800));
  color: var(--white);
}

.metric span {
  display: block;
  min-height: 34px;
  color: #bfc9df;
  font-size: 0.85rem;
}

.metric strong {
  display: block;
  margin-top: 10px;
  font-size: 2rem;
  line-height: 1;
}

@media (max-width: 680px) {
  .shell {
    padding: 18px;
    place-items: stretch;
  }

  .panel {
    width: 100%;
    align-self: center;
  }

  .demo-grid,
  .dashboard-preview {
    grid-template-columns: 1fr;
  }

  .demo-grid {
    padding: 24px;
  }

  .content-panel h1,
  .content-panel .lead,
  .content-panel .eyebrow {
    margin-left: 24px;
    margin-right: 24px;
  }

  .feature-list,
  .dashboard-preview {
    margin-left: 20px;
    margin-right: 20px;
  }

  .feature-row {
    grid-template-columns: 1fr;
  }
}