/* Relaxed tracking prevents large letterforms colliding in Safari. */
.hero h1,
.page-hero h1 {
  font-weight: 800;
  letter-spacing: -0.025em;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
}

.hero-kicker,
.exposure-grid h2,
.section-heading h2,
.closing-grid h2,
.briefing-grid h2,
.prose h2 {
  font-weight: 800;
  letter-spacing: -0.018em;
  font-kerning: normal;
}

.split-signal span {
  right: 50%;
  top: 50%;
  width: 38px;
  height: 38px;
  transform: translate(50%, -50%);
  border: 2px solid #7cc2ff;
  background: #1268d3;
  box-shadow:
    0 0 0 8px rgba(86, 172, 255, 0.12),
    0 0 28px rgba(42, 133, 224, 0.45);
}

.split-signal span::before,
.split-signal span::after {
  content: "";
  position: absolute;
  left: -82px;
  top: -28px;
  width: 196px;
  height: 90px;
  border: 2px solid rgba(101, 183, 255, 0.72);
  border-radius: 50%;
  transform: rotate(48deg);
}

.split-signal span::after {
  transform: rotate(-48deg);
}

.capability-symbol {
  border-width: 3px;
  font-size: 1.65rem;
  font-family: "Segoe UI Symbol", "Apple Symbols", sans-serif;
  font-weight: 800;
}

.section-heading.compact .eyebrow {
  margin: 0 0 22px;
}

.path-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border: 2px solid #73bdff;
  border-radius: 50%;
  color: #8ed0ff;
  font-size: 1.45rem;
  line-height: 1;
}

.path-card h3 {
  margin-top: 32px;
}

.prose > section {
  padding-left: 58px;
}

.section-marker {
  position: absolute;
  left: 0;
  top: 5px;
  width: 26px;
  height: 26px;
  border: 2px solid var(--blue);
  border-radius: 50%;
  box-shadow: 0 0 0 6px rgba(18, 104, 211, 0.08);
}

.section-marker::before,
.section-marker::after {
  content: "";
  position: absolute;
  left: -8px;
  top: 9px;
  width: 38px;
  height: 6px;
  border: 1px solid var(--blue);
  border-radius: 50%;
  transform: rotate(46deg);
}

.section-marker::after {
  transform: rotate(-46deg);
}

@media (max-width: 700px) {
  .prose > section {
    padding-left: 46px;
  }
}

.split-signal img {
  position: absolute;
  z-index: 2;
  inset: 6%;
  width: 88%;
  height: 88%;
  object-fit: contain;
  filter: drop-shadow(0 14px 20px rgba(4, 34, 78, 0.28));
}

.pressure-dot {
  width: 18px;
  height: 18px;
  border: 1px solid #8dceff;
  border-radius: 50%;
  background: radial-gradient(
    circle at 35% 28%,
    #fff 0 5%,
    #5cb1ff 18%,
    #1268d3 55%,
    #062858 100%
  );
  box-shadow:
    0 0 0 5px rgba(18, 104, 211, 0.08),
    0 4px 9px rgba(6, 48, 98, 0.18);
}

.capability-chain::before {
  height: 3px;
  background: linear-gradient(
    90deg,
    transparent,
    #1268d3 5%,
    #82c9ff 50%,
    #1268d3 95%,
    transparent
  );
  box-shadow: 0 0 14px rgba(59, 153, 241, 0.24);
}

.section-marker,
.side-pulse {
  border: 0;
  background: none;
  box-shadow: none;
}

.section-marker::before,
.section-marker::after {
  display: none;
}

.section-marker {
  width: 44px;
  height: 44px;
  top: -1px;
}

.section-marker img,
.side-pulse img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 8px 14px rgba(12, 73, 147, 0.2));
}

.side-pulse {
  display: block;
  width: 62px;
  height: 62px;
  margin-bottom: 22px;
}

/* Subtle data-sphere treatment for interior-page headers. */
.page-signal {
  right: 0;
  top: 0;
  width: 62%;
  height: 100%;
  aspect-ratio: auto;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  opacity: 0.58;
  background:
    radial-gradient(circle at 72% 28%, #81c9ff 0 3px, transparent 4px),
    radial-gradient(circle at 48% 66%, #5eaff7 0 4px, transparent 5px),
    radial-gradient(circle at 88% 72%, #9ad5ff 0 3px, transparent 4px),
    linear-gradient(
      24deg,
      transparent 49.8%,
      rgba(111, 188, 255, 0.3) 50%,
      transparent 50.2%
    ),
    linear-gradient(
      -34deg,
      transparent 49.8%,
      rgba(111, 188, 255, 0.22) 50%,
      transparent 50.2%
    ),
    repeating-linear-gradient(
      0deg,
      rgba(111, 188, 255, 0.08) 0 1px,
      transparent 1px 54px
    ),
    repeating-linear-gradient(
      90deg,
      rgba(111, 188, 255, 0.08) 0 1px,
      transparent 1px 54px
    );
  mask-image: linear-gradient(90deg, transparent, #000 24%, #000);
}

.page-signal span,
.page-signal i {
  position: absolute;
  right: 8%;
  top: 9%;
  width: 56%;
  height: 82%;
  border: 1px solid rgba(124, 196, 255, 0.42);
  border-radius: 50%;
  transform: rotate(52deg);
}

.page-signal i {
  transform: rotate(-52deg);
}

@media (max-width: 700px) {
  .page-signal {
    width: 90%;
    opacity: 0.38;
  }
  .section-marker {
    width: 36px;
    height: 36px;
  }
}

.split-signal {
  isolation: isolate;
  border: 0;
  background: radial-gradient(circle at 50% 50%, #0d3266, #06152b 72%);
}

.split-signal::before {
  z-index: 0;
  opacity: 0.46;
  background-size: 24px 24px;
}

.split-signal .mini-heart {
  position: absolute;
  z-index: 3;
  display: grid;
  place-items: center;
  color: #fff;
  border: 0;
  background: transparent;
  box-shadow: none;
  text-shadow: 0 1px 4px #00122e;
}

.split-signal .mini-heart::before,
.split-signal .mini-heart::after {
  display: none;
}

.split-signal .mini-heart {
  left: 50%;
  right: auto;
  top: 50%;
  bottom: auto;
  width: 28%;
  height: 28%;
  transform: translate(-50%, -50%);
  font-size: 1.25rem;
}

.capability-section {
  background:
    radial-gradient(
      circle at 9% 12%,
      rgba(114, 188, 255, 0.13),
      transparent 19rem
    ),
    linear-gradient(180deg, #fff, #f5faff);
}

.capability-card {
  border-top: 1px solid transparent;
}

.capability-card:hover,
.capability-card:focus-visible {
  border-color: rgba(18, 104, 211, 0.25);
}

.capability-symbol {
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  background: radial-gradient(circle at 34% 28%, #fff, #eaf5ff 72%);
}

.briefing-image,
.page-image {
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(155, 207, 255, 0.42);
  border-radius: var(--radius);
  background: #031125;
  box-shadow: 0 28px 70px rgba(0, 12, 35, 0.36);
}

.briefing-image img,
.page-image img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-image {
  margin-bottom: 65px;
}
.closing-grid > div:nth-child(2) .eyebrow {
  margin-bottom: 12px;
}
.site-section-title {
  font-family: var(--sans) !important;
  font-size: clamp(2.5rem, 4.8vw, 5rem) !important;
  font-weight: 800 !important;
  font-kerning: normal;
  letter-spacing: -0.018em !important;
  line-height: 0.98;
}

@media (max-width: 1280px) {
  .site-nav {
    position: absolute;
    right: 24px;
    top: 74px;
    width: min(380px, calc(100vw - 48px));
    display: none;
    align-items: stretch;
    flex-direction: column;
    gap: 3px;
    padding: 16px;
    background: #061a36;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 18px;
    box-shadow: var(--shadow);
  }
  .site-nav.open {
    display: flex;
  }
  .site-nav a {
    padding: 12px;
  }
  .nav-cta {
    border-radius: 10px;
  }
  .menu-toggle {
    display: block;
  }
  .nav-shell {
    min-height: 74px;
  }
}

@media (max-width: 1080px) {
  .briefing-image {
    max-width: 780px;
  }
}

@media (max-width: 700px) {
  .capability-chain {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .capability-card {
    display: grid;
    grid-template-columns: 68px 1fr;
    column-gap: 14px;
    align-items: start;
  }
  .capability-card .capability-symbol {
    grid-row: 1 / 4;
  }
  .capability-card h3 {
    margin-top: 6px;
  }
  .capability-card p {
    margin-top: 0;
  }
}

/* Visual-system pass: depth, dimensional labels and topic-specific CSS icons. */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    url("prkh-atom-3d.webp"), url("prkh-atom-3d.webp"), url("prkh-atom-3d.webp");
  background-repeat: no-repeat;
  background-position:
    3% 20%,
    46% 86%,
    96% 8%;
  background-size: 150px, 105px, 185px;
  opacity: 0.055;
  filter: grayscale(1) brightness(2.7);
  mix-blend-mode: screen;
}

.hero .signal-field {
  background-image:
    radial-gradient(
      circle at 82% 46%,
      rgba(91, 180, 255, 0.18),
      transparent 24%
    ),
    linear-gradient(rgba(93, 174, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(93, 174, 255, 0.1) 1px, transparent 1px);
  box-shadow: inset 0 -130px 150px rgba(2, 12, 30, 0.72);
}

.hero .signal-field::before {
  box-shadow:
    0 0 0 54px rgba(64, 153, 245, 0.06),
    0 0 0 108px rgba(64, 153, 245, 0.035),
    inset 0 0 90px rgba(62, 161, 255, 0.08);
}

.hero-copy {
  position: relative;
}

.hero-copy::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: -8%;
  top: -8%;
  width: 82%;
  height: 118%;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(20, 85, 160, 0.2), transparent 67%);
  filter: blur(18px);
}

.split-signal {
  box-shadow:
    0 24px 55px rgba(5, 37, 78, 0.17),
    inset 0 0 55px rgba(54, 151, 245, 0.1);
}

.split-signal .mini-heart {
  left: 50%;
  top: 50%;
  width: 46px;
  height: 46px;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(120, 199, 255, 0.46);
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(2, 29, 70, 0.82),
    rgba(11, 72, 145, 0.46)
  );
  box-shadow:
    inset 0 0 12px rgba(87, 180, 255, 0.22),
    0 0 18px rgba(55, 153, 243, 0.36);
  opacity: 0.95;
  mix-blend-mode: normal;
}

.split-signal .mini-heart::before {
  content: "\2665";
  position: static;
  display: block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1;
  color: #76c4ff;
  text-shadow: 0 0 9px rgba(86, 180, 255, 0.72);
}

.split-signal .mini-heart::after {
  display: none;
}

.capability-section,
.paths-section {
  position: relative;
  isolation: isolate;
}

.capability-section::before,
.paths-section::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: url("prkh-atom-3d.webp"), url("prkh-atom-3d.webp");
  background-repeat: no-repeat;
  background-position:
    -70px 92%,
    calc(100% + 55px) 8%;
  background-size: 250px, 190px;
  opacity: 0.035;
  filter: grayscale(1) brightness(2.5);
}

.paths-section::before {
  opacity: 0.065;
  mix-blend-mode: screen;
}

.capability-card {
  border-top: 0;
}

.capability-card:hover,
.capability-card:focus-visible {
  border-color: transparent;
}

.capability-symbol.cap-icon,
.path-icon {
  position: relative;
  overflow: hidden;
}

.cap-icon::before,
.cap-icon::after,
.cap-icon i,
.cap-icon i::before,
.cap-icon i::after,
.path-icon::before,
.path-icon::after,
.path-icon i,
.path-icon i::before,
.path-icon i::after {
  content: "";
  position: absolute;
  box-sizing: border-box;
}

/* AI in PR: connected judgement, not a text abbreviation. */
.cap-intelligence::before {
  z-index: 2;
  left: 50%;
  top: 50%;
  width: 9px;
  height: 9px;
  margin: -4.5px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow:
    -19px -14px 0 -1px var(--blue),
    20px -11px 0 -1px var(--blue),
    -13px 18px 0 -1px var(--blue),
    18px 17px 0 -1px var(--blue);
}

.cap-intelligence::after {
  left: 18px;
  top: 19px;
  width: 45px;
  height: 42px;
  background:
    linear-gradient(
      35deg,
      transparent 48%,
      var(--blue) 49% 51%,
      transparent 52%
    ),
    linear-gradient(
      -32deg,
      transparent 48%,
      var(--blue) 49% 51%,
      transparent 52%
    ),
    linear-gradient(
      88deg,
      transparent 48%,
      var(--blue) 49% 51%,
      transparent 52%
    );
  opacity: 0.82;
}

/* Information disorder: a signal fractured and shifted out of alignment. */
.cap-disorder i {
  left: 18px;
  top: 23px;
  width: 44px;
  height: 34px;
  background: repeating-linear-gradient(
    to bottom,
    var(--blue) 0 2px,
    transparent 2px 9px
  );
  clip-path: polygon(
    0 0,
    48% 0,
    40% 25%,
    58% 38%,
    43% 57%,
    55% 73%,
    47% 100%,
    0 100%,
    0 0,
    100% 0,
    100% 100%,
    55% 100%,
    63% 75%,
    50% 57%,
    65% 39%,
    48% 24%,
    57% 0
  );
}

.cap-disorder::after {
  left: 39px;
  top: 18px;
  width: 2px;
  height: 44px;
  background: var(--blue);
  transform: rotate(12deg);
  opacity: 0.55;
}

/* Crisis, risk and reputation: a protective shield with an alert point. */
.cap-shield::before {
  left: 24px;
  top: 18px;
  width: 32px;
  height: 41px;
  background: var(--blue);
  clip-path: polygon(50% 0, 94% 16%, 88% 67%, 50% 100%, 12% 67%, 6% 16%);
}

.cap-shield i {
  z-index: 2;
  left: 38px;
  top: 28px;
  width: 4px;
  height: 18px;
  border-radius: 4px;
  background: #fff;
  box-shadow: 0 23px 0 -1px #fff;
}

/* Strategy and evaluation: target, direction and measurable movement. */
.cap-evaluation::before {
  left: 25px;
  top: 25px;
  width: 31px;
  height: 31px;
  border: 2px solid var(--blue);
  border-radius: 50%;
  box-shadow:
    inset 0 0 0 7px #fff,
    inset 0 0 0 9px var(--blue);
}

.cap-evaluation::after {
  left: 20px;
  top: 38px;
  width: 47px;
  height: 2px;
  background: var(--blue);
  transform: rotate(-42deg);
  transform-origin: center;
}

.cap-evaluation i {
  z-index: 2;
  right: 15px;
  top: 17px;
  width: 11px;
  height: 11px;
  border-top: 2px solid var(--blue);
  border-right: 2px solid var(--blue);
}

/* Storytelling and sensemaking: conversation carrying an intelligible signal. */
.cap-sensemaking::before {
  left: 18px;
  top: 21px;
  width: 45px;
  height: 34px;
  border: 2px solid var(--blue);
  border-radius: 12px;
}

.cap-sensemaking::after {
  left: 26px;
  top: 50px;
  width: 13px;
  height: 13px;
  border-left: 2px solid var(--blue);
  transform: skew(-28deg);
}

.cap-sensemaking i {
  left: 29px;
  top: 36px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow:
    9px 0 0 var(--blue),
    18px 0 0 var(--blue);
}

/* Internal communication: two connected messages moving through an organisation. */
.cap-internal::before,
.cap-internal::after {
  width: 32px;
  height: 23px;
  border: 2px solid var(--blue);
  border-radius: 8px;
}

.cap-internal::before {
  left: 17px;
  top: 21px;
}
.cap-internal::after {
  right: 16px;
  bottom: 19px;
  background: #eaf5ff;
}
.cap-internal i {
  left: 30px;
  top: 39px;
  width: 22px;
  height: 2px;
  background: var(--blue);
  transform: rotate(35deg);
}

/* Engagement and relationships: independent circles held in connection. */
.cap-relationships::before,
.cap-relationships::after {
  top: 25px;
  width: 31px;
  height: 31px;
  border: 3px solid var(--blue);
  border-radius: 50%;
}

.cap-relationships::before {
  left: 17px;
}
.cap-relationships::after {
  right: 17px;
}
.cap-relationships i {
  left: 38px;
  top: 24px;
  width: 4px;
  height: 34px;
  background: #fff;
  opacity: 0.75;
}

/* Learning route icons use the same line weight and visual grammar. */
.path-icon {
  width: 66px;
  height: 66px;
  background: rgba(8, 42, 86, 0.72);
  box-shadow: inset 0 0 22px rgba(87, 174, 255, 0.08);
}

.path-live i {
  left: 29px;
  top: 29px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #8ed0ff;
  box-shadow: 0 0 12px rgba(111, 190, 255, 0.65);
}
.path-live::before,
.path-live::after {
  border: 2px solid #8ed0ff;
  border-top-color: transparent;
  border-bottom-color: transparent;
  border-radius: 50%;
}
.path-live::before {
  inset: 18px;
}
.path-live::after {
  inset: 10px;
  opacity: 0.55;
}

.path-ondemand::before {
  left: 13px;
  top: 16px;
  width: 40px;
  height: 32px;
  border: 2px solid #8ed0ff;
  border-radius: 6px;
}
.path-ondemand i {
  left: 30px;
  top: 26px;
  width: 0;
  height: 0;
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
  border-left: 11px solid #8ed0ff;
}
.path-ondemand::after {
  left: 25px;
  bottom: 10px;
  width: 16px;
  height: 2px;
  background: #8ed0ff;
  opacity: 0.65;
}

.path-pathway i {
  left: 17px;
  top: 17px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #8ed0ff;
  box-shadow:
    22px 11px 0 #8ed0ff,
    8px 29px 0 #8ed0ff;
}
.path-pathway::before {
  left: 20px;
  top: 21px;
  width: 28px;
  height: 27px;
  border: 2px solid #8ed0ff;
  border-left-color: transparent;
  border-bottom-color: transparent;
  border-radius: 50%;
  transform: rotate(20deg);
}

.path-team::before {
  left: 26px;
  top: 13px;
  width: 13px;
  height: 13px;
  border: 2px solid #8ed0ff;
  border-radius: 50%;
  box-shadow:
    -16px 9px 0 -2px #071d3a,
    -16px 9px 0 0 #8ed0ff,
    16px 9px 0 -2px #071d3a,
    16px 9px 0 0 #8ed0ff;
}
.path-team::after {
  left: 18px;
  top: 35px;
  width: 29px;
  height: 17px;
  border: 2px solid #8ed0ff;
  border-bottom: 0;
  border-radius: 22px 22px 0 0;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.think-forward-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.55fr);
  gap: 58px;
  align-items: center;
}

.think-forward-visual {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: 0 28px 65px rgba(4, 28, 61, 0.2);
}

.think-forward-visual img {
  display: block;
  width: 100%;
  height: auto;
}

.think-forward-copy > p:not(.eyebrow) {
  color: var(--muted);
  font-size: 1.05rem;
}

@media (max-width: 1080px) {
  .think-forward-grid {
    grid-template-columns: 1fr;
  }
  .think-forward-visual {
    max-width: 820px;
  }
  .think-forward-copy {
    max-width: 760px;
  }
}

@media (max-width: 700px) {
  .hero::before {
    background-size: 90px, 75px, 110px;
    opacity: 0.045;
  }
  .capability-symbol.cap-icon {
    width: 68px;
    height: 68px;
    transform: scale(0.86);
    transform-origin: top left;
  }
  .think-forward-grid {
    gap: 30px;
  }
  .think-forward-copy > p:not(.eyebrow) {
    font-size: 1rem;
  }
}

/* Precision pass: calmer hero, unambiguous Atom treatment and complete icons. */
.hero {
  background:
    radial-gradient(
      ellipse at 78% 42%,
      rgba(35, 127, 225, 0.28),
      transparent 30%
    ),
    radial-gradient(
      ellipse at 30% 82%,
      rgba(23, 91, 165, 0.16),
      transparent 42%
    ),
    linear-gradient(126deg, #020d20 0%, #061b39 48%, #020b18 100%);
}

.hero::before {
  inset: 8% -10% auto auto;
  width: 62vw;
  aspect-ratio: 1;
  border: 1px solid rgba(117, 190, 255, 0.16);
  border-radius: 50%;
  background: transparent;
  opacity: 1;
  filter: none;
  mix-blend-mode: normal;
  box-shadow:
    0 0 0 90px rgba(62, 151, 239, 0.035),
    0 0 0 180px rgba(62, 151, 239, 0.018),
    inset 0 0 120px rgba(50, 145, 236, 0.04);
}

.hero .signal-field {
  opacity: 1;
  background:
    linear-gradient(
      112deg,
      transparent 18%,
      rgba(114, 190, 255, 0.035) 42%,
      transparent 67%
    ),
    radial-gradient(
      circle at 80% 43%,
      rgba(108, 189, 255, 0.12),
      transparent 22%
    );
  box-shadow: inset 0 -150px 170px rgba(1, 9, 23, 0.74);
  mask-image: none;
}

.hero .signal-field::before {
  right: -11%;
  top: 10%;
  width: 59vw;
  border-color: rgba(115, 190, 255, 0.18);
  box-shadow: inset 0 0 90px rgba(62, 161, 255, 0.04);
}

.hero .signal-field::after {
  right: 7%;
  top: 29%;
  width: 32vw;
  border-color: rgba(115, 190, 255, 0.15);
  box-shadow:
    0 0 0 46px rgba(55, 145, 235, 0.025),
    0 0 0 92px rgba(55, 145, 235, 0.014);
}

.hero-copy::before {
  opacity: 0.55;
}

.exposure-grid {
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.55fr);
  gap: clamp(55px, 7vw, 105px);
  max-width: 1080px;
}

.exposure-grid > div {
  max-width: 760px;
}

.capability-card {
  text-align: center;
}
.capability-card p {
  text-align: left;
}
.capability-symbol {
  overflow: visible;
  margin: 0 auto 26px;
}

.icon-svg {
  display: block;
  width: 48px;
  height: 48px;
  color: currentColor;
  overflow: visible;
}

.path-card {
  text-align: center;
}
.path-card p {
  text-align: left;
}
.path-icon {
  overflow: visible;
  margin-inline: auto;
}
.path-icon .icon-svg {
  width: 42px;
  height: 42px;
}

.pr-atom-explainer {
  display: grid;
  grid-template-columns: minmax(190px, 250px) 1fr;
  gap: 34px;
  align-items: center;
  margin: 38px 0 10px;
  padding: 26px;
  border: 1px solid #c9ddf0;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #061a35, #0a315f);
  box-shadow: 0 22px 50px rgba(4, 28, 61, 0.14);
}

.pr-atom-explainer img {
  display: block;
  width: 100%;
  filter: drop-shadow(0 15px 24px rgba(0, 11, 33, 0.35));
}

.pr-atom-explainer figcaption {
  display: grid;
  gap: 10px;
}

.pr-atom-explainer figcaption strong,
.pr-atom-explainer figcaption span {
  display: block;
  padding: 10px 13px;
  border-left: 2px solid #69baff;
  background: rgba(255, 255, 255, 0.055);
  color: #d9edff;
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pr-atom-explainer figcaption strong {
  color: #fff;
  border-left-width: 4px;
  background: rgba(61, 153, 242, 0.16);
}

.section-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.button-outline {
  border-color: rgba(18, 104, 211, 0.34);
  background: #f4f9ff;
  color: #0b5fbd;
  box-shadow: none;
}

.button-outline:hover {
  background: #e8f3ff;
}

.page-hero {
  background:
    radial-gradient(
      ellipse at 77% 44%,
      rgba(42, 132, 224, 0.23),
      transparent 31%
    ),
    linear-gradient(124deg, #031126, #08244a 58%, #031124);
}

.page-signal {
  opacity: 0.75;
  background:
    linear-gradient(
      116deg,
      transparent 22%,
      rgba(116, 193, 255, 0.045) 48%,
      transparent 72%
    ),
    radial-gradient(
      circle at 72% 46%,
      rgba(99, 181, 250, 0.09),
      transparent 25%
    );
  mask-image: none;
}

.page-signal span,
.page-signal i {
  right: 7%;
  top: 5%;
  width: 58%;
  height: 90%;
  border-color: rgba(124, 196, 255, 0.2);
}

.page-signal i {
  right: 17%;
  top: 18%;
  width: 38%;
  height: 64%;
  border-color: rgba(124, 196, 255, 0.12);
}

@media (max-width: 1080px) {
  .exposure-grid {
    grid-template-columns: minmax(0, 1fr) 310px;
  }
}

@media (max-width: 700px) {
  .hero::before {
    width: 115vw;
    right: -55%;
    opacity: 0.8;
  }
  .hero .signal-field::before {
    width: 125vw;
    right: -60%;
  }
  .hero .signal-field::after {
    width: 78vw;
    right: -20%;
  }
  .exposure-grid {
    grid-template-columns: 1fr;
    gap: 35px;
  }
  .capability-card {
    grid-template-columns: 68px 1fr;
    text-align: left;
  }
  .capability-card .capability-symbol {
    margin: 0;
  }
  .capability-card h3 {
    text-align: left;
  }
  .path-card {
    text-align: left;
  }
  .path-icon {
    margin-inline: 0;
  }
  .pr-atom-explainer {
    grid-template-columns: 1fr;
    padding: 20px;
  }
  .pr-atom-explainer img {
    max-width: 240px;
    margin-inline: auto;
  }
}

.atom-explain-link {
  position: absolute;
  z-index: 5;
  left: 50%;
  bottom: 2%;
  transform: translateX(-50%);
  color: #9fd5ff;
  font-size: 0.59rem;
  font-weight: 850;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  white-space: nowrap;
}

.atom-explain-link:hover {
  color: #fff;
}

.hero .signal-field {
  background:
    radial-gradient(
      circle at 66% 69%,
      rgba(166, 218, 255, 0.72) 0 3px,
      transparent 4px
    ),
    radial-gradient(
      circle at 77% 50%,
      rgba(166, 218, 255, 0.66) 0 3px,
      transparent 4px
    ),
    radial-gradient(
      circle at 87% 76%,
      rgba(166, 218, 255, 0.62) 0 3px,
      transparent 4px
    ),
    radial-gradient(
      circle at 96% 57%,
      rgba(166, 218, 255, 0.58) 0 3px,
      transparent 4px
    ),
    linear-gradient(
      20deg,
      transparent 49.88%,
      rgba(110, 188, 255, 0.09) 50%,
      transparent 50.12%
    ),
    linear-gradient(
      -16deg,
      transparent 49.88%,
      rgba(110, 188, 255, 0.07) 50%,
      transparent 50.12%
    ),
    radial-gradient(
      ellipse at 78% 62%,
      rgba(39, 133, 222, 0.13),
      transparent 35%
    );
  box-shadow: inset 0 -150px 170px rgba(1, 9, 23, 0.7);
}

.hero .signal-field::before {
  right: -7%;
  top: auto;
  bottom: -4%;
  width: 58%;
  height: 30%;
  aspect-ratio: auto;
  border-color: rgba(112, 188, 255, 0.22);
  border-radius: 50%;
  box-shadow:
    0 0 0 32px rgba(74, 163, 247, 0.035),
    0 0 0 64px rgba(74, 163, 247, 0.022),
    0 0 0 96px rgba(74, 163, 247, 0.014);
}

.hero .signal-field::after {
  right: 8%;
  top: auto;
  bottom: 2%;
  width: 38%;
  height: 19%;
  aspect-ratio: auto;
  border-color: rgba(112, 188, 255, 0.16);
  border-radius: 50%;
  box-shadow: none;
}

.signal-node {
  position: absolute;
  z-index: 2;
  bottom: 7%;
  width: 1px;
  height: 23%;
  background: linear-gradient(transparent, rgba(164, 218, 255, 0.68));
}

.signal-node::before,
.signal-node::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 8px;
  height: 8px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: #a9dcff;
  box-shadow: 0 0 10px rgba(119, 199, 255, 0.5);
}

.signal-node::before {
  top: 0;
}
.signal-node::after {
  bottom: 0;
}
.node-one {
  left: 64%;
  height: 18%;
}
.node-two {
  left: 76%;
  height: 30%;
}
.node-three {
  left: 87%;
  height: 15%;
}
.node-four {
  left: 96%;
  height: 24%;
}

.page-signal {
  opacity: 0.88;
  background:
    radial-gradient(
      circle at 60% 70%,
      rgba(169, 220, 255, 0.62) 0 3px,
      transparent 4px
    ),
    radial-gradient(
      circle at 76% 43%,
      rgba(169, 220, 255, 0.55) 0 3px,
      transparent 4px
    ),
    radial-gradient(
      circle at 90% 72%,
      rgba(169, 220, 255, 0.5) 0 3px,
      transparent 4px
    ),
    linear-gradient(
      24deg,
      transparent 49.88%,
      rgba(112, 190, 255, 0.1) 50%,
      transparent 50.12%
    ),
    linear-gradient(
      -20deg,
      transparent 49.88%,
      rgba(112, 190, 255, 0.07) 50%,
      transparent 50.12%
    ),
    radial-gradient(
      ellipse at 76% 55%,
      rgba(47, 143, 231, 0.12),
      transparent 38%
    );
}

.page-signal span,
.page-signal i {
  right: -4%;
  top: auto;
  bottom: -24%;
  width: 76%;
  height: 50%;
  border-color: rgba(124, 196, 255, 0.2);
  transform: none;
}

.page-signal i {
  right: 10%;
  bottom: -13%;
  width: 50%;
  height: 33%;
}

.page-signal b,
.page-signal em {
  position: absolute;
  bottom: 4%;
  width: 1px;
  height: 35%;
  background: linear-gradient(transparent, rgba(164, 218, 255, 0.52));
}

.page-signal b {
  left: 62%;
}
.page-signal em {
  left: 84%;
  height: 23%;
}
.page-signal b::before,
.page-signal b::after,
.page-signal em::before,
.page-signal em::after {
  content: "";
  position: absolute;
  left: 50%;
  width: 7px;
  height: 7px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: #a9dcff;
}
.page-signal b::before,
.page-signal em::before {
  top: 0;
}
.page-signal b::after,
.page-signal em::after {
  bottom: 0;
}

.paths-section::before {
  background:
    radial-gradient(
      circle at 9% 76%,
      rgba(142, 208, 255, 0.26) 0 3px,
      transparent 4px
    ),
    radial-gradient(
      circle at 24% 90%,
      rgba(142, 208, 255, 0.2) 0 3px,
      transparent 4px
    ),
    radial-gradient(
      circle at 78% 18%,
      rgba(142, 208, 255, 0.18) 0 3px,
      transparent 4px
    ),
    linear-gradient(
      23deg,
      transparent 49.88%,
      rgba(112, 190, 255, 0.055) 50%,
      transparent 50.12%
    ),
    linear-gradient(
      -17deg,
      transparent 49.88%,
      rgba(112, 190, 255, 0.045) 50%,
      transparent 50.12%
    );
  opacity: 1;
  filter: none;
  mix-blend-mode: normal;
}

.capability-card:nth-child(4) .icon-svg {
  transform: none;
}

#pr-atom {
  scroll-margin-top: 110px;
}

.pr-atom-explainer figcaption div {
  padding: 10px 13px;
  border-left: 2px solid #69baff;
  background: rgba(255, 255, 255, 0.055);
}

.pr-atom-explainer figcaption div:first-child {
  border-left-width: 4px;
  background: rgba(61, 153, 242, 0.16);
}

.pr-atom-explainer figcaption strong {
  padding: 0;
  border: 0;
  background: transparent;
}

.pr-atom-explainer figcaption small {
  display: block;
  margin-top: 4px;
  color: #bcd6ec;
  font-size: 0.76rem;
  line-height: 1.45;
}

@media (max-width: 700px) {
  .atom-explain-link {
    bottom: 0;
    font-size: 0.49rem;
  }
  .node-one {
    left: 58%;
  }
  .node-two {
    left: 72%;
  }
  .node-three {
    left: 86%;
  }
  .node-four {
    display: none;
  }
  .page-signal {
    width: 100%;
  }
}

/* Complete Arrow's PR Atom model — authoritative visual and explanation */
.pr-atom-model {
  margin: 34px 0 28px;
}

.pr-atom-context-visual {
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(71, 167, 255, 0.28);
  border-radius: 18px;
  background: #03162d;
  box-shadow: 0 26px 65px rgba(0, 31, 71, 0.2);
}

.pr-atom-context-visual img {
  display: block;
  width: 100%;
  height: auto;
}

.pr-atom-context-visual figcaption {
  padding: 16px 20px 18px;
  color: #d7e9fb;
  font-size: 0.92rem;
  line-height: 1.55;
  background: linear-gradient(115deg, #061a35, #0b2c55);
}

.atom-sphere-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.atom-sphere-card {
  position: relative;
  min-height: 220px;
  padding: 24px;
  overflow: hidden;
  border: 1px solid #c9def2;
  border-radius: 14px;
  background: linear-gradient(145deg, #f8fbff, #edf6ff);
}

.atom-sphere-card::after {
  content: "";
  position: absolute;
  right: -36px;
  bottom: -42px;
  width: 126px;
  height: 126px;
  border: 1px solid rgba(20, 111, 217, 0.18);
  border-radius: 50%;
  box-shadow:
    0 0 0 15px rgba(20, 111, 217, 0.05),
    0 0 0 32px rgba(20, 111, 217, 0.035);
}

.atom-sphere-card.atom-sphere-core {
  color: #fff;
  border-color: rgba(86, 178, 255, 0.42);
  background: linear-gradient(145deg, #061b38, #0b4382);
}

.atom-sphere-card .atom-sphere-type {
  margin: 0 0 7px;
  color: #1872d5;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.atom-sphere-card.atom-sphere-core .atom-sphere-type {
  color: #79c8ff;
}

.atom-sphere-card h3 {
  margin: 0 0 10px;
  color: #06182f;
  font-size: 1.45rem;
}

.atom-sphere-card.atom-sphere-core h3 {
  color: #fff;
}

.atom-sphere-card p:last-child {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.6;
}

.atom-sphere-card.atom-sphere-core p:last-child {
  color: #d8eaff;
}

.atom-field-notes-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 18px;
  color: #0969d5;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.atom-field-notes-link:hover,
.atom-field-notes-link:focus-visible {
  text-decoration: underline;
  text-underline-offset: 4px;
}

@media (max-width: 720px) {
  .atom-sphere-grid {
    grid-template-columns: 1fr;
  }
  .atom-sphere-card {
    min-height: 0;
    padding: 20px;
  }
  .pr-atom-context-visual {
    border-radius: 12px;
  }
}

/* Connected-field header treatment inspired by PRKH's learning imagery. */
.hero {
  isolation: isolate;
  background:
    radial-gradient(
      ellipse at 78% 46%,
      rgba(29, 112, 207, 0.25),
      transparent 37%
    ),
    linear-gradient(126deg, #020d20 0%, #061b39 52%, #020b18 100%);
}

.hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  width: auto;
  aspect-ratio: auto;
  border: 0;
  border-radius: 0;
  background:
    linear-gradient(
      90deg,
      #020d20 0%,
      rgba(2, 13, 32, 0.9) 27%,
      rgba(2, 16, 38, 0.22) 68%,
      rgba(2, 13, 32, 0.34) 100%
    ),
    url("connected-atoms-background.jpg") center right / cover no-repeat;
  opacity: 0.3;
  filter: saturate(0.65) contrast(1.15);
  mix-blend-mode: screen;
  pointer-events: none;
}

.hero .signal-field {
  display: none;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
}

.hero-datasphere {
  min-height: 530px;
}

.page-hero {
  isolation: isolate;
  background: linear-gradient(122deg, #020d20, #08284f);
}

.page-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  background:
    linear-gradient(
      90deg,
      #031126 0%,
      rgba(3, 17, 38, 0.88) 38%,
      rgba(3, 17, 38, 0.2) 100%
    ),
    url("connected-atoms-background.jpg") center 58% / cover no-repeat;
  opacity: 0.24;
  filter: saturate(0.6) contrast(1.18);
  mix-blend-mode: screen;
  pointer-events: none;
}

.page-signal {
  display: none;
}

.paths-section {
  isolation: isolate;
}

.paths-section::before {
  background:
    linear-gradient(rgba(3, 19, 42, 0.42), rgba(3, 19, 42, 0.72)),
    url("connected-atoms-background.jpg") center / cover no-repeat;
  opacity: 0.095;
  filter: saturate(0.4);
}

@media (max-width: 1080px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-datasphere {
    display: none;
  }
  .hero::before {
    opacity: 0.22;
    background-position: 65% center;
  }
}