:root {
  color-scheme: dark;
  --bg: #060b14;
  --bg-deep: #08111d;
  --panel: rgba(11, 18, 31, 0.82);
  --panel-strong: rgba(13, 22, 36, 0.96);
  --panel-soft: rgba(12, 19, 31, 0.72);
  --line: rgba(140, 180, 206, 0.18);
  --line-strong: rgba(177, 219, 239, 0.28);
  --text: #edf4fb;
  --muted: #94a8bc;
  --accent: #5dc7ff;
  --accent-2: #d4f4ff;
  --accent-warm: #f5c67c;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.34);
  --radius-lg: 2rem;
  --radius-md: 1.3rem;
  --max-width: 1220px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at top left, rgba(93, 199, 255, 0.15), transparent 30%),
    radial-gradient(circle at top right, rgba(245, 198, 124, 0.09), transparent 24%),
    linear-gradient(180deg, #09111d 0%, #060b14 54%, #04070e 100%);
  color: var(--text);
  font-family: "IBM Plex Sans", "Avenir Next", "Segoe UI", sans-serif;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

body::before {
  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: 88px 88px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 82%);
}

body::after {
  background:
    radial-gradient(circle at 16% 16%, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px),
    radial-gradient(circle at 74% 24%, rgba(255, 255, 255, 0.09) 0 1px, transparent 1px),
    radial-gradient(circle at 45% 62%, rgba(255, 255, 255, 0.08) 0 1.2px, transparent 1.2px),
    radial-gradient(circle at 82% 78%, rgba(255, 255, 255, 0.07) 0 1px, transparent 1px);
}

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

a {
  color: inherit;
}

button,
a,
summary {
  transition:
    color 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease,
    transform 180ms ease,
    opacity 180ms ease;
}

a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.85rem 1rem;
  border-radius: 999px;
  background: #fff;
  color: #000;
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

.page-shell {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
  padding-bottom: 4rem;
}

.panel {
  background: linear-gradient(180deg, var(--panel-strong), var(--panel));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.section {
  margin-top: 4rem;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1rem 0 0.95rem;
  backdrop-filter: blur(0);
}

.topbar.is-scrolled {
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  max-width: 18.25rem;
}

.brand img {
  width: 100%;
  height: auto;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.75rem;
}

.nav a {
  padding: 0.72rem 0.98rem;
  border-radius: 999px;
  border: 1px solid rgba(189, 221, 241, 0.12);
  background: rgba(9, 16, 28, 0.56);
  color: var(--muted);
  text-decoration: none;
}

.nav a:hover,
.nav a.is-active {
  color: var(--text);
  border-color: rgba(93, 199, 255, 0.36);
  background: rgba(16, 25, 40, 0.92);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.95fr);
  gap: 1.5rem;
  align-items: stretch;
}

.hero-copy,
.hero-visual {
  border-radius: var(--radius-lg);
  padding: 2rem;
  overflow: hidden;
}

.hero-copy {
  position: relative;
}

.hero-copy::after {
  content: "";
  position: absolute;
  right: -5rem;
  top: -5rem;
  width: 16rem;
  height: 16rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(93, 199, 255, 0.16), transparent 72%);
}

.eyebrow {
  margin: 0 0 0.9rem;
  color: var(--accent);
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  letter-spacing: -0.03em;
}

h1 {
  max-width: 12ch;
  font-size: clamp(3rem, 7vw, 5.35rem);
  line-height: 0.96;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.02;
}

h3 {
  font-size: 1.2rem;
  line-height: 1.12;
}

.hero-dek {
  max-width: 36rem;
  margin: 1.2rem 0 0;
  font-size: clamp(1.08rem, 2vw, 1.28rem);
  line-height: 1.55;
  color: var(--accent-2);
}

.hero-body,
.section-heading p,
.signal-card p,
.surface-card p,
.audience-card p,
.faq-list p,
.source-list,
.footer {
  line-height: 1.62;
}

.hero-body {
  max-width: 37rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.65rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.1rem;
  padding: 0.9rem 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: linear-gradient(135deg, #87dcff, #5dc7ff 55%, #4faaf7);
  color: #03111e;
  font-weight: 700;
}

.button-secondary {
  background: rgba(10, 18, 30, 0.54);
  border-color: rgba(140, 180, 206, 0.22);
  color: var(--text);
}

.stat-grid,
.signals-grid,
.surface-grid,
.audience-grid,
.sources-grid {
  display: grid;
  gap: 1rem;
}

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

.stat-card {
  padding: 1rem 1.05rem;
  border-radius: 1.1rem;
  border: 1px solid rgba(176, 216, 236, 0.12);
  background: rgba(7, 14, 24, 0.56);
}

.stat-card dt,
.visual-header h2,
.matrix-head span {
  color: var(--accent-2);
}

.stat-card dt {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  margin-bottom: 0.42rem;
}

.stat-card dd {
  margin: 0;
  color: var(--text);
  font-size: 0.96rem;
}

.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  justify-content: space-between;
}

.visual-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.visual-header h2 {
  max-width: 16ch;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.signal-graphic {
  width: 100%;
  height: auto;
}

.grid-frame {
  fill: rgba(7, 12, 22, 0.84);
  stroke: rgba(189, 221, 241, 0.14);
}

.grid-lines path {
  fill: none;
  stroke: rgba(189, 221, 241, 0.08);
  stroke-width: 1;
}

.signal-area {
  fill: rgba(93, 199, 255, 0.12);
}

.signal-line {
  fill: none;
  stroke: url(#lineGradient);
  stroke-width: 5;
  stroke-linecap: round;
}

.signal-dots circle {
  fill: #d9f5ff;
}

.signal-labels text {
  fill: rgba(212, 244, 255, 0.92);
  font-family: "IBM Plex Sans", "Avenir Next", sans-serif;
  font-size: 14px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.surface-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.surface-pills span {
  padding: 0.72rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(140, 180, 206, 0.18);
  background: rgba(8, 15, 26, 0.6);
  color: var(--muted);
}

.section-heading {
  display: grid;
  gap: 0.9rem;
  margin-bottom: 1.4rem;
}

.section-heading h2 {
  max-width: 15ch;
}

.section-heading p {
  max-width: 44rem;
  margin: 0;
  color: var(--muted);
}

.signals-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.signal-card,
.surface-card,
.audience-card,
.sources-grid > section,
.faq-list details {
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.signal-card {
  min-height: 100%;
}

.source-note {
  margin-top: 1rem;
  color: #b9cad9;
  font-size: 0.9rem;
}

.surface-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.surface-card a {
  display: inline-flex;
  margin-top: 1rem;
  color: var(--accent-2);
  text-decoration: none;
}

.surface-card a:hover,
.source-list a:hover {
  color: var(--accent);
}

.audience-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.matrix {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.matrix-row {
  display: grid;
  grid-template-columns: minmax(140px, 0.9fr) minmax(160px, 1fr) minmax(220px, 1.45fr);
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-top: 1px solid rgba(189, 221, 241, 0.1);
}

.matrix-row:first-child {
  border-top: 0;
}

.matrix-head {
  background: rgba(9, 16, 28, 0.72);
  font-weight: 700;
}

.faq-list {
  display: grid;
  gap: 0.95rem;
}

.faq-list details {
  overflow: hidden;
}

.faq-list summary {
  cursor: pointer;
  list-style: none;
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  font-size: 1.08rem;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  float: right;
  color: var(--accent);
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list p {
  margin: 0.95rem 0 0;
  color: var(--muted);
}

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

.source-list {
  margin: 1rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.source-list li + li {
  margin-top: 0.75rem;
}

.source-list a {
  text-decoration: none;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 4rem;
  padding: 1.2rem 0 0;
  border-top: 1px solid rgba(140, 180, 206, 0.16);
  color: var(--muted);
  font-size: 0.92rem;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 420ms ease, transform 420ms ease;
}

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

@media (max-width: 1180px) {
  .signals-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

@media (max-width: 900px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    justify-content: flex-start;
  }

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

  .signals-grid,
  .surface-grid,
  .sources-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 680px) {
  .page-shell {
    width: min(var(--max-width), calc(100% - 1rem));
  }

  .section {
    margin-top: 3rem;
  }

  .hero-copy,
  .hero-visual {
    padding: 1.25rem;
  }

  h1 {
    font-size: clamp(2.5rem, 12vw, 3.8rem);
  }

  .stat-grid,
  .signals-grid,
  .surface-grid,
  .audience-grid,
  .sources-grid {
    grid-template-columns: 1fr;
  }

  .matrix-row {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .footer {
    flex-direction: column;
  }
}

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

  * {
    transition: none !important;
    animation: none !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}