:root {
  --color-bg-dark: #020617;
  --color-bg-light: #f5f7fb;
  --color-bg-card: #ffffff;
  --color-primary: #0f172a;
  --color-accent: #06b6d4;
  --color-border: #d0d7e6;
  --color-text: #0f172a;
  --color-text-muted: #6b7280;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.12);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 6px;
  --transition-fast: 150ms ease-out;
}

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

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg-light);
  -webkit-font-smoothing: antialiased;
}

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

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

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* NAVBAR */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(2, 6, 23, 0.96);
  backdrop-filter: blur(12px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.brand img {
  height: 40px;
  width: auto;
}

.brand-name {
  color: #e5e7eb;
  font-weight: 600;
  letter-spacing: 0.05em;
  font-size: 0.9rem;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-links a {
  color: #e5e7eb;
  font-size: 0.95rem;
  padding: 0.35rem 0.1rem;
  border-radius: 999px;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-links a:hover {
  background: rgba(148, 163, 184, 0.16);
}

/* Buttons */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  border: 1px solid transparent;
  transition: background var(--transition-fast), color var(--transition-fast),
    border-color var(--transition-fast), transform var(--transition-fast);
  cursor: pointer;
}

.button-primary {
  background: var(--color-accent);
  color: #0f172a;
  border-color: rgba(6, 182, 212, 0.6);
}

.button-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(8, 47, 73, 0.3);
}

.button-secondary {
  background: transparent;
  color: #e5e7eb;
  border-color: rgba(148, 163, 184, 0.5);
}

.button-secondary:hover {
  background: rgba(15, 23, 42, 0.9);
  color: #e5e7eb;
}

/* SECTIONS */

section {
  padding: 4.5rem 0;
}

/* HERO */

.hero {
  background: radial-gradient(circle at 0% 0%, #0f172a, #020617);
  color: #e5e7eb;
  padding-top: 5.5rem;
  padding-bottom: 4.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.18rem 0.65rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  color: #9ca3af;
  font-size: 0.8rem;
  margin-bottom: 1rem;
}

.hero-eyebrow-dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 20%, #a5f3fc, #06b6d4);
}

.hero h1 {
  font-size: clamp(2.6rem, 4vw, 3.4rem);
  letter-spacing: -0.04em;
  margin: 0 0 1rem;
}

.hero p {
  max-width: 36rem;
  font-size: 1.03rem;
  color: #cbd5f5;
  margin: 0 0 1.8rem;
}

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

.hero-secondary {
  font-size: 0.9rem;
  color: #9ca3af;
  margin-top: 1.4rem;
}

.hero-card {
  background: radial-gradient(circle at 30% 0%, rgba(34, 211, 238, 0.16), transparent),
              linear-gradient(to bottom right, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.98));
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.35);
}

.hero-card-label {
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 0.75rem;
  color: #9ca3af;
  margin-bottom: 0.35rem;
}

.hero-card-metric {
  font-size: 1.6rem;
  font-weight: 600;
  color: #e5e7eb;
  margin-bottom: 0.4rem;
}

.hero-card-text {
  font-size: 0.9rem;
  color: #9ca3af;
}

.hero-card-asof {
  font-size: 0.78rem;
  color: #9ca3af;
  margin-bottom: 1rem;
}

/* PROOF BAR */

.proof-bar {
  background: var(--color-bg-light);
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.2rem;
}

.proof-chip {
  background: var(--color-bg-card);
  border-radius: 999px;
  padding: 0.85rem 1.4rem 0.85rem 2rem;
  border: 1px solid rgba(209, 213, 219, 0.85);
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
  text-align: left;
}

.proof-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

.proof-value {
  font-weight: 600;
  font-size: 0.95rem;
}

/* COMMON TEXT */

.section-heading {
  font-size: 1.8rem;
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
}

.section-lead {
  margin: 0;
  max-width: 40rem;
  color: var(--color-text-muted);
}

/* VALUE SECTIONS */

.value {
  background: #ffffff;
}

/* What the RKC is + logo */

.value-what-section {
  padding-top: 4.5rem;
  padding-bottom: 0; /* no gap below */
}

.value-what-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr);
  gap: 2.75rem;
  align-items: center;
}

.value-what-logo {
  display: flex;
  align-items: center;
  justify-content: center;
}

.value-what-logo img {
  height: 360px;
  max-height: 420px;
  width: auto;
  display: block;
}

.value-pricing-section {
  padding-top: 0; /* touches previous section */
}

.value-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.2fr);
  gap: 2.5rem;
  align-items: flex-start;
}

.value-tag {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
  margin-bottom: 0.7rem;
}

.value-card {
  background: #f9fafb;
  border-radius: var(--radius-lg);
  padding: 1.6rem 1.8rem;
  border: 1px solid rgba(209, 213, 219, 0.9);
}

.value-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.9rem;
}

.value-list li {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.value-list strong {
  color: var(--color-text);
}

/* EXAMPLES */

.examples {
  background: var(--color-bg-light);
}

.examples-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
  margin-top: 2.4rem;
}

.example-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: 1.3rem 1.3rem 1.5rem;
  border: 1px solid rgba(209, 213, 219, 0.9);
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.example-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

.example-title {
  font-weight: 600;
  font-size: 1.05rem;
}

.example-copy {
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

.example-split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.example-pane {
  border-radius: var(--radius-md);
  background: #f3f4f6;
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.example-pane-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

.example-img-wrap {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid rgba(209, 213, 219, 0.85);
}

/* AUDIENCE */

.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
  margin-top: 2rem;
}

.audience-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 1.3rem 1.4rem;
  border: 1px solid rgba(209, 213, 219, 0.9);
}

.audience-title {
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.audience-text {
  font-size: 0.94rem;
  color: var(--color-text-muted);
}

/* LICENSING */

.licensing {
  background: #ffffff;
  text-align: center;
}

.licensing-inner {
  max-width: 40rem;
  margin: 0 auto;
}

.licensing-inner .section-heading {
  margin-bottom: 0.7rem;
}

.licensing-inner p {
  margin-bottom: 1.1rem;
}

/* CONTACT */

.contact {
  background: var(--color-bg-light);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.1fr);
  gap: 2.3rem;
  align-items: flex-start;
}

.contact-intro p {
  color: var(--color-text-muted);
  max-width: 26rem;
}

.contact-email {
  margin-top: 1.3rem;
  font-size: 0.95rem;
}

.contact-email a {
  color: var(--color-accent);
}

form {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 1.6rem 1.7rem 1.8rem;
  border: 1px solid rgba(209, 213, 219, 0.9);
  box-shadow: 0 12px 35px rgba(15, 23, 42, 0.08);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
  margin-bottom: 0.9rem;
}

.form-group label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

input[type="text"],
input[type="email"],
textarea {
  border-radius: var(--radius-sm);
  border: 1px solid rgba(209, 213, 219, 0.9);
  padding: 0.6rem 0.7rem;
  font-size: 0.95rem;
  font-family: inherit;
  resize: vertical;
  min-height: 42px;
}

textarea {
  min-height: 120px;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: rgba(56, 189, 248, 0.9);
  box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.65);
}

/* FOOTER */

.site-footer {
  background: #020617;
  color: #9ca3af;
  font-size: 0.85rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem 0;
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.footer-links a {
  color: #e5e7eb;
}

.footer-links a:hover {
  text-decoration: underline;
}

/* PAGE HEADER (PRIVACY/TERMS) */

.page-header {
  background: #020617;
  color: #e5e7eb;
  padding: 1rem 0;
}

.page-main {
  padding: 3.5rem 0 4rem;
}

.page-main h1 {
  font-size: 2.1rem;
  letter-spacing: -0.03em;
  margin-top: 0;
}

.page-main p,
.page-main li {
  color: var(--color-text-muted);
  max-width: 46rem;
  font-size: 0.95rem;
}

.page-main ul {
  padding-left: 1.2rem;
}



/* DATASETS */

.datasets {
  background: #ffffff;
}

.datasets-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.4rem;
  margin-top: 2rem;
}

.dataset-card {
  background: #f5f7fb;
  border-radius: var(--radius-lg);
  padding: 1.2rem 1.2rem 1.25rem;
  border: 1px solid rgba(209, 213, 219, 0.9);
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.dataset-name {
  font-weight: 600;
  font-size: 1.02rem;
}

.dataset-meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

.dataset-asof {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  margin-top: 0.12rem;
}

.dataset-list {
  margin: 0.4rem 0 0;
  padding-left: 1.05rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.dataset-list li + li {
  margin-top: 0.35rem;
}

.discovery-surfaces {
  margin-top: 2.3rem;
  padding: 1.2rem 1.2rem 1.1rem;
  border-radius: var(--radius-lg);
  background: var(--color-bg-light);
  border: 1px solid rgba(209, 213, 219, 0.75);
}

.discovery-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

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

.discovery-item {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-md);
  background: #ffffff;
  border: 1px solid rgba(209, 213, 219, 0.9);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.discovery-icon {
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.06);
  color: var(--color-primary);
  flex: 0 0 2.25rem;
  font-size: 1.2rem;
}

.discovery-item-text {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
}

.discovery-name {
  font-weight: 600;
  color: var(--color-text);
}

.discovery-soon {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

@media (max-width: 720px) {
  .discovery-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ZOOM (compare modal) */

body.modal-open {
  overflow: hidden;
}

.zoomable-panel {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;
  border-radius: var(--radius-sm);
}

.zoomable-panel img {
  width: 100%;
  height: clamp(180px, 25vw, 280px);
  object-fit: contain;
  background: #ffffff;
}

.zoomable-panel:focus-visible {
  outline: 3px solid rgba(6, 182, 212, 0.8);
  outline-offset: 3px;
}

.zoom-invite {
  position: absolute;
  bottom: 10px;
  right: 10px;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.85);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.18);
  pointer-events: none;
}

.zoom-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
}

.zoom-modal.is-open {
  display: block;
}

.zoom-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 23, 0.72);
}

.zoom-dialog {
  position: relative;
  margin: 4vh auto;
  width: min(1200px, calc(100vw - 2rem));
  height: min(90vh, 920px);
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(226, 232, 240, 0.9);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.zoom-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid rgba(226, 232, 240, 0.9);
  background: #ffffff;
}

.zoom-header-left {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}

.zoom-title {
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.zoom-controls {
  display: inline-flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.zoom-toggle {
  font-size: 0.85rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(209, 213, 219, 0.85);
  background: #f3f4f6;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.zoom-toggle.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

.zoom-close {
  border: 1px solid rgba(209, 213, 219, 0.85);
  background: #ffffff;
  border-radius: 999px;
  width: 40px;
  height: 40px;
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}

.zoom-scroll {
  padding: 1rem;
  overflow: auto;
}

.zoom-compare {
  display: grid;
  gap: 1rem;
  align-items: start;
}

.zoom-compare[data-mode="sideBySide"] {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.zoom-compare[data-mode="readable"] {
  grid-template-columns: minmax(0, 1fr);
}

.zoom-col-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  margin-bottom: 0.4rem;
}

.zoom-compare img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(209, 213, 219, 0.85);
  background: #ffffff;
}

.licensing-definition {
  color: rgba(15, 23, 42, 0.78);
}


/* RESPONSIVE */

@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .proof-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .value-what-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .value-what-logo img {
    height: 220px;
    max-height: 260px;
  }
  .value-grid,
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .examples-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .audience-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 720px) {
  .nav-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }
  .nav-links {
    width: 100%;
    justify-content: space-between;
  }
  section {
    padding: 3.5rem 0;
  }
  .proof-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .examples-grid,
  .audience-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .form-row {
    grid-template-columns: minmax(0, 1fr);
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .example-split {
    grid-template-columns: minmax(0, 1fr);
  }
  .datasets-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .zoom-dialog {
    margin: 0;
    width: 100vw;
    height: 100vh;
    border-radius: 0;
  }
  .zoom-scroll {
    padding: 0.75rem;
  }
  .zoom-compare {
    grid-template-columns: minmax(0, 1fr) !important;
  }
}