/* NeuralGap v2 — standalone (scientific positioning; open directly in a browser) */

:root {
  --color-page: #ffffff;
  --color-alt: #e8f0f5;
  --color-news: #f5f5f0;
  --color-text: #333333;
  --color-heading: #1a1a1a;
  --color-accent: #6aabbb;
  --color-link: #cc3366;
  --color-link-hover: #333366;
  --color-cta-bg: #1a1a2e;
  --color-cta-text: #ffffff;
  --color-card: #f0f2f4;
  --color-border: #d8dde2;
  --color-mock-dark: #111111;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --max-width: 72rem;
  --radius-card: 10px;
  --radius-btn: 999px;
  --shadow-soft: 0 12px 40px rgba(26, 26, 46, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-page);
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--color-cta-bg);
  color: var(--color-cta-text);
}

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

a {
  color: var(--color-link);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  color: var(--color-link-hover);
  text-decoration: underline;
}

h1,
h2,
h3,
h4,
h5 {
  margin: 0 0 0.5rem;
  font-weight: 500;
  line-height: 1.2;
  color: var(--color-heading);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

p {
  margin: 0 0 0.9rem;
}

ul {
  margin: 0 0 0.9rem;
  padding-left: 1.25rem;
}

li {
  margin-bottom: 0.35rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem clamp(1rem, 4vw, 2rem);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  color: var(--color-heading);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
  color: var(--color-heading);
}

.brand-logo {
  display: block;
  width: 2rem;
  height: 2rem;
  object-fit: contain;
  flex-shrink: 0;
}

.nav-primary {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-primary a {
  color: var(--color-text);
  font-size: 0.9375rem;
}

.nav-primary a:hover {
  color: var(--color-link);
}

.wrap {
  width: min(var(--max-width), 100% - 2rem);
  margin-inline: auto;
}

.section {
  padding-block: clamp(3rem, 8vw, 5.5rem);
}

.section--alt {
  background: var(--color-alt);
}

.section__intro {
  text-align: center;
  max-width: 42rem;
  margin-inline: auto;
  margin-bottom: clamp(2rem, 5vw, 3rem);
}

.section__subtitle {
  margin: 0 0 0.75rem;
  font-size: 1.125rem;
  font-style: italic;
  font-weight: 400;
  color: var(--color-accent);
}

.section__lede {
  margin: 0;
  font-size: 1rem;
  color: var(--color-text);
}

.section__tags {
  margin: 0 0 0.5rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #6b7280;
  text-align: center;
}

.hero {
  position: relative;
  min-height: min(65vh, 34rem);
  display: flex;
  align-items: center;
  padding-block: clamp(2.5rem, 8vw, 4.5rem);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      105deg,
      rgba(255, 255, 255, 0.98) 0%,
      rgba(255, 255, 255, 0.92) 48%,
      rgba(232, 240, 245, 0.65) 100%
    ),
    radial-gradient(
        ellipse 100% 70% at 90% 30%,
        rgba(106, 171, 187, 0.14),
        transparent 55%
      ),
    linear-gradient(160deg, #eef2f5 0%, #f8fafb 50%, #e8ecef 100%);
  pointer-events: none;
}

.hero__split {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.75rem, 5vw, 3rem);
  align-items: center;
}

@media (min-width: 900px) {
  .hero__split {
    grid-template-columns: 1fr minmax(280px, 40%);
  }
}

.hero__text {
  text-align: left;
  max-width: 38rem;
}

@media (min-width: 900px) {
  .hero__text {
    max-width: none;
  }
}

.hero__media {
  width: 100%;
}

.hero__img {
  display: block;
  width: 100%;
  max-height: min(22rem, 50vw);
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center;
  margin-inline: auto;
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
  background: #0a0a0a;
}

.section-visual {
  max-width: 52rem;
  margin: 2rem auto 0;
}

.section-visual img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
}

.section-visual--circe {
  max-width: 40rem;
}

.section-visual--circe img {
  margin-inline: auto;
}

.hero__sub {
  font-size: 1.125rem;
  color: #555;
  margin-bottom: 0;
}

.news-strip {
  padding-block: 2rem;
}

.news-box {
  max-width: 48rem;
  margin-inline: auto;
  padding: 1rem 1.25rem;
  background: var(--color-news);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  font-size: 0.9375rem;
}

.news-box strong {
  color: var(--color-heading);
}

.coverage-note {
  max-width: 48rem;
  margin: 0 auto clamp(2rem, 5vw, 2.75rem);
  padding: 1rem 1.25rem;
  background: var(--color-news);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  font-size: 0.9375rem;
  text-align: left;
}

.coverage-note strong {
  color: var(--color-heading);
}

.mock-stack {
  position: relative;
  max-width: 52rem;
  margin: 2rem auto 0;
  min-height: 14rem;
}

.mock-window {
  position: absolute;
  border-radius: 12px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--color-border);
}

.mock-window--back {
  width: 72%;
  height: 11rem;
  right: 5%;
  top: 0;
  background: linear-gradient(135deg, #fff 0%, #f0f4f8 100%);
}

.mock-window--front {
  width: 68%;
  height: 12rem;
  left: 5%;
  bottom: 0;
  background: linear-gradient(
    160deg,
    var(--color-mock-dark) 0%,
    #2a2a3a 40%,
    #1a1a2e 100%
  );
}

.mock-window__bar {
  height: 1.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.06);
  border-radius: 12px 12px 0 0;
}

.mock-window--back .mock-window__bar {
  background: #e8ecf0;
  border-bottom-color: var(--color-border);
  border-radius: 12px 12px 0 0;
}

.mock-glow {
  position: absolute;
  width: 40%;
  height: 45%;
  left: 30%;
  top: 35%;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(255, 160, 80, 0.45) 0%,
    transparent 70%
  );
  filter: blur(4px);
}

.btn {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.65rem 1.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-cta-text);
  background: var(--color-cta-bg);
  border: 1px solid var(--color-cta-bg);
  border-radius: var(--radius-btn);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s;
}

.btn:hover {
  background: #252540;
  border-color: #252540;
  color: var(--color-cta-text);
  text-decoration: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.text-center {
  text-align: center;
}

.grid-3 {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  padding: 1.5rem;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  text-align: left;
}

.card h3,
.card h4 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.card ul {
  font-size: 0.9375rem;
}

.circe-icon {
  width: 3.5rem;
  height: 3.5rem;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: conic-gradient(
    var(--color-accent),
    #cc3366,
    #6aabbb,
    var(--color-accent)
  );
  opacity: 0.85;
}

.workflow-col {
  text-align: center;
}

.workflow-visual {
  height: 10rem;
  margin-bottom: 1rem;
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  overflow: hidden;
  background: #0a0a0a;
}

.workflow-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.workflow-col h3 {
  font-size: 1.25rem;
}

.workflow-col ul {
  text-align: left;
  font-size: 0.9375rem;
}

.differentiators {
  background: var(--color-page);
  border-block: 1px solid var(--color-border);
}

.differentiators .wrap {
  max-width: 52rem;
}

.differentiators h2 {
  text-align: center;
  margin-bottom: 1.5rem;
}

.differentiators ol {
  margin: 0;
  padding-left: 1.25rem;
  counter-reset: item;
}

.differentiators li {
  margin-bottom: 1rem;
  padding-left: 0.25rem;
}

.differentiators li strong {
  color: var(--color-heading);
}

.article-card {
  background: var(--color-page);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(26, 26, 46, 0.06);
}

.article-thumb {
  height: 8rem;
  background: #0a0a0a;
  overflow: hidden;
}

.article-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.article-card h3 {
  font-size: 1.125rem;
  padding: 1rem 1rem 0;
}

.article-card p {
  font-size: 0.875rem;
  padding: 0 1rem;
  color: #555;
}

.article-card .read-more {
  display: inline-block;
  padding: 0 1rem 1rem;
  font-size: 0.875rem;
}

.contact {
  max-width: 36rem;
  margin-inline: auto;
}

.contact h2 {
  text-align: center;
}

.form-row {
  margin-bottom: 1rem;
}

label {
  display: block;
  font-size: 0.875rem;
  margin-bottom: 0.35rem;
  color: var(--color-heading);
}

input,
select,
textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font: inherit;
  border: 1px solid #666;
  border-radius: 4px;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-heading);
}

.site-footer {
  padding: 2rem 1rem;
  text-align: center;
  font-size: 0.875rem;
  color: #666;
  border-top: 1px solid var(--color-border);
}

@media (max-width: 640px) {
  h1 {
    font-size: 1.85rem;
  }

  h2 {
    font-size: 1.65rem;
  }

  .nav-primary {
    justify-content: flex-end;
  }

  .mock-stack {
    min-height: 18rem;
  }

  .mock-window--back,
  .mock-window--front {
    position: relative;
    width: 100%;
    left: auto;
    right: auto;
    top: auto;
    bottom: auto;
    margin-bottom: 1rem;
  }

  .mock-window--front {
    margin-top: -4rem;
  }
}