:root {
  --blue: #435585;
  --blue-deep: #143852;
  --blue-soft: #6b7f9b;
  --blue-mist: #dfecfe;
  --sidebar-mid: #1c4560;
  --ink: #111111;
  --ink-muted: #5c6570;
  --fog: #e8eef8;
  --mist: #f2f6fc;
  --paper: #f7f9fd;
  --white: #ffffff;

  /* Layout aliases (same roles as the earlier green theme) */
  --canopy: var(--blue);
  --canopy-deep: var(--blue-deep);
  --moss: var(--blue-soft);
  --leaf: #7a92b5;
  --bark: var(--sidebar-mid);
  --sap: var(--blue-mist);
  --sap-soft: #f0f6ff;

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Plus Jakarta Sans", system-ui, sans-serif;

  --space: clamp(1.25rem, 3vw, 2.5rem);
  --max: 72rem;
  --header-h: 4.25rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

.skip-link {
  position: absolute;
  left: var(--space);
  top: -100px;
  z-index: 100;
  padding: 0.65rem 1rem;
  border-radius: 0.45rem;
  background: var(--canopy);
  color: var(--white);
  font-weight: 600;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0.75rem;
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Header */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: var(--header-h);
  padding: 0 var(--space);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease), color 0.3s ease;
  color: rgba(255, 255, 255, 0.82);
}

.site-header .brand-mark {
  color: var(--white);
}

.site-header .nav a:hover {
  color: var(--white);
}

.site-header.is-scrolled {
  color: var(--ink-muted);
  border-bottom-color: color-mix(in srgb, var(--blue-deep) 12%, transparent);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(14px);
}

.site-header.is-scrolled .brand-mark {
  color: var(--blue-deep);
}

.site-header.is-scrolled .nav a:hover {
  color: var(--blue-deep);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  color: var(--blue-deep);
  transition: color 0.3s ease;
}

.brand-icon {
  width: 1.7rem;
  height: 1.7rem;
  color: var(--blue-deep);
}

.nav {
  display: none;
  align-items: center;
  gap: 1.35rem;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav a {
  opacity: 0.85;
  transition: opacity 0.2s ease, color 0.2s ease;
}

.nav a:hover {
  opacity: 1;
}

.header-cta {
  display: none;
}

@media (min-width: 900px) {
  .nav {
    display: flex;
  }

  .header-cta {
    display: inline-flex;
  }
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.35rem;
  border-radius: 0.55rem;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

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

.btn-sm {
  padding: 0.55rem 0.95rem;
  font-size: 0.9rem;
}

.btn-primary {
  background: var(--blue-mist);
  color: var(--blue-deep);
}

.btn-primary:hover {
  background: var(--sap-soft);
}

.site-header .btn-primary {
  background: var(--blue-mist);
  color: var(--blue-deep);
}

.site-header.is-scrolled .btn-primary {
  background: var(--blue);
  color: var(--white);
}

.btn-ghost {
  background: transparent;
  border-color: color-mix(in srgb, var(--white) 45%, transparent);
  color: var(--white);
}

.btn-ghost:hover {
  border-color: var(--white);
  background: color-mix(in srgb, var(--white) 10%, transparent);
}

.section .btn-ghost {
  border-color: color-mix(in srgb, var(--blue) 28%, transparent);
  color: var(--blue-deep);
}

.section .btn-ghost:hover {
  background: color-mix(in srgb, var(--blue) 8%, transparent);
}

/* Hero */

.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  align-items: end;
  overflow: hidden;
  color: var(--white);
  background: var(--blue-deep);
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-canopy {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 90% 70% at 70% 15%, color-mix(in srgb, var(--leaf) 35%, transparent), transparent 55%),
    radial-gradient(ellipse 70% 55% at 20% 25%, color-mix(in srgb, var(--blue) 45%, transparent), transparent 50%),
    linear-gradient(165deg, #2a4a72 0%, var(--blue-deep) 48%, #0c2438 100%);
  animation: canopy-drift 18s ease-in-out infinite alternate;
}

.hero-trunk {
  position: absolute;
  left: 50%;
  bottom: 18%;
  width: min(8vw, 4.5rem);
  height: 38%;
  transform: translateX(-50%);
  background: linear-gradient(180deg, color-mix(in srgb, var(--blue-mist) 40%, #3a5575), #10283c);
  border-radius: 40% 40% 20% 20% / 8% 8% 20% 20%;
  opacity: 0.55;
  box-shadow: 0 0 60px color-mix(in srgb, var(--blue) 40%, transparent);
}

.hero-trunk::before,
.hero-trunk::after {
  content: "";
  position: absolute;
  bottom: 70%;
  width: 42vw;
  max-width: 18rem;
  height: 2px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--blue-mist) 55%, transparent), transparent);
  opacity: 0.7;
}

.hero-trunk::before {
  left: 50%;
  transform: rotate(-28deg);
  transform-origin: left center;
}

.hero-trunk::after {
  right: 50%;
  transform: rotate(28deg);
  transform-origin: right center;
}

.hero-roots {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: min(90vw, 42rem);
  height: 28%;
  transform: translateX(-50%);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  pointer-events: none;
}

.hero-roots span {
  display: block;
  width: 2px;
  height: 55%;
  background: linear-gradient(180deg, color-mix(in srgb, var(--blue-mist) 50%, transparent), transparent);
  transform-origin: top center;
  animation: root-pulse 4.5s ease-in-out infinite;
}

.hero-roots span:nth-child(1) {
  transform: rotate(-38deg);
  height: 70%;
  animation-delay: 0s;
}

.hero-roots span:nth-child(2) {
  transform: rotate(-16deg);
  height: 85%;
  animation-delay: 0.4s;
}

.hero-roots span:nth-child(3) {
  transform: rotate(0deg);
  height: 100%;
  animation-delay: 0.8s;
}

.hero-roots span:nth-child(4) {
  transform: rotate(16deg);
  height: 85%;
  animation-delay: 1.2s;
}

.hero-roots span:nth-child(5) {
  transform: rotate(38deg);
  height: 70%;
  animation-delay: 1.6s;
}

.hero-mist {
  position: absolute;
  inset: auto 0 0;
  height: 45%;
  background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--blue-deep) 75%, #000));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(100% - 2 * var(--space), var(--max));
  margin: 0 auto;
  padding: calc(var(--header-h) + 3rem) 0 clamp(4rem, 12vh, 7rem);
}

.hero-kicker {
  margin: 0 0 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue-mist);
}

.hero-brand {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 10vw, 6.5rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--white);
}

.hero-title {
  margin: 0.85rem 0 0;
  max-width: 18ch;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.4vw, 2.35rem);
  font-weight: 500;
  line-height: 1.2;
  color: color-mix(in srgb, var(--white) 92%, var(--blue-mist));
}

.hero-lede {
  margin: 1.15rem 0 0;
  max-width: 38rem;
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  color: color-mix(in srgb, var(--white) 78%, transparent);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

@keyframes canopy-drift {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(1.04);
  }
}

@keyframes root-pulse {
  0%,
  100% {
    opacity: 0.35;
  }
  50% {
    opacity: 0.85;
  }
}

/* Sections */

.section {
  padding: clamp(4rem, 10vw, 7rem) 0;
}

.section-inner {
  width: min(100% - 2 * var(--space), var(--max));
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 0.65rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--moss);
}

.section-title {
  margin: 0;
  max-width: 18ch;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.2vw, 3.1rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--bark);
}

.section-lede {
  margin: 1rem 0 0;
  max-width: 40rem;
  color: var(--ink-muted);
  font-size: 1.08rem;
}

.section-pitch {
  background:
    radial-gradient(ellipse 60% 50% at 100% 0%, color-mix(in srgb, var(--fog) 80%, transparent), transparent),
    var(--paper);
}

.model-pillars {
  list-style: none;
  margin: 2.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

@media (min-width: 720px) {
  .model-pillars {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .model-pillars {
    grid-template-columns: repeat(5, 1fr);
  }
}

.model-pillars li {
  padding: 1.25rem 1.15rem 1.35rem;
  border-top: 2px solid var(--blue);
  background: linear-gradient(180deg, color-mix(in srgb, var(--blue-mist) 55%, transparent), transparent);
}

.pillar-index {
  display: block;
  margin-bottom: 0.7rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--moss);
}

.model-pillars strong {
  display: block;
  margin-bottom: 0.45rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--bark);
}

.model-pillars span:last-child {
  display: block;
  color: var(--ink-muted);
  font-size: 0.95rem;
}

/* Domains */

.section-domains {
  background:
    linear-gradient(180deg, var(--mist), var(--paper));
}

.domain-groups {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

@media (min-width: 900px) {
  .domain-groups {
    grid-template-columns: repeat(3, 1fr);
  }

  .domain-group-wide {
    grid-column: 1 / -1;
  }
}

.domain-group {
  padding: 1.5rem 1.35rem 1.6rem;
  background: color-mix(in srgb, var(--white) 70%, transparent);
  border-left: 3px solid var(--canopy);
}

.domain-group h3 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--canopy);
}

.domain-group ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.domain-group li {
  color: var(--ink-muted);
  font-size: 0.98rem;
}

.domain-group strong {
  color: var(--ink);
  font-weight: 600;
}

.domain-inline {
  display: grid !important;
  gap: 0.85rem !important;
}

@media (min-width: 720px) {
  .domain-inline {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}

/* Features */

.section-features {
  background: var(--blue-deep);
  color: var(--white);
}

.section-features .eyebrow {
  color: var(--blue-mist);
}

.section-features .section-title {
  color: var(--white);
}

.section-features .section-lede {
  color: color-mix(in srgb, var(--white) 72%, transparent);
}

.feature-grid {
  display: grid;
  gap: 1rem;
  margin-top: 2.5rem;
}

@media (min-width: 720px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .feature-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature {
  padding: 1.35rem 1.2rem 1.5rem;
  border-top: 1px solid color-mix(in srgb, var(--blue-mist) 45%, transparent);
  background: color-mix(in srgb, var(--blue) 28%, transparent);
}

.feature h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--blue-mist);
}

.feature p {
  margin: 0;
  color: color-mix(in srgb, var(--white) 75%, transparent);
  font-size: 0.95rem;
}

/* Maturity */

.section-maturity {
  background:
    radial-gradient(ellipse 50% 60% at 0% 50%, color-mix(in srgb, var(--fog) 90%, transparent), transparent),
    var(--paper);
}

.maturity-layout {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 900px) {
  .maturity-layout {
    grid-template-columns: 1fr 1.15fr;
    align-items: center;
  }
}

.stage-rail {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.stage-rail li {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 0.15rem 0.85rem;
  padding: 0.85rem 1rem;
  border-left: 3px solid color-mix(in srgb, var(--moss) 40%, transparent);
  background: color-mix(in srgb, var(--white) 65%, transparent);
  transition: border-color 0.3s ease, transform 0.3s var(--ease);
}

.stage-rail li span {
  grid-row: 1 / 3;
  align-self: center;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--moss);
}

.stage-rail strong {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--bark);
}

.stage-rail em {
  font-style: normal;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.stage-rail li.is-accent,
.stage-rail li.is-active {
  border-left-color: var(--blue);
  transform: translateX(4px);
  background: color-mix(in srgb, var(--blue-mist) 55%, var(--white));
}

/* Use cases */

.section-uses {
  background: linear-gradient(180deg, var(--mist), var(--paper));
}

.use-grid {
  display: grid;
  gap: 1rem;
  margin-top: 2.5rem;
}

@media (min-width: 720px) {
  .use-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .use-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.use-card {
  padding: 1.4rem 1.25rem 1.5rem;
  background: transparent;
  border-top: 2px solid var(--moss);
}

.use-card h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--bark);
}

.use-card p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.98rem;
}

/* Who */

.section-who {
  background: var(--paper);
}

.floor-points {
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.15rem;
}

@media (min-width: 900px) {
  .floor-points {
    grid-template-columns: repeat(2, 1fr);
  }
}

.floor-points li {
  display: grid;
  gap: 0.35rem;
  padding: 1.15rem 0 1.25rem;
  border-top: 1px solid color-mix(in srgb, var(--bark) 12%, transparent);
}

.floor-points strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--canopy);
}

.floor-points span {
  color: var(--ink-muted);
}

/* Contact */

.section-contact {
  padding-bottom: clamp(5rem, 12vw, 8rem);
}

.contact-panel {
  padding: clamp(2rem, 5vw, 3rem);
  background:
    radial-gradient(ellipse 80% 70% at 100% 0%, color-mix(in srgb, var(--leaf) 30%, transparent), transparent 55%),
    linear-gradient(145deg, var(--blue) 0%, var(--blue-deep) 100%);
  color: var(--white);
  border: none;
}

.contact-panel .eyebrow {
  color: var(--blue-mist);
}

.contact-panel .section-title {
  color: var(--white);
  max-width: 16ch;
}

.contact-panel .section-lede {
  color: color-mix(in srgb, var(--white) 78%, transparent);
}

.contact-actions {
  margin-top: 1.5rem;
}

.contact-meta {
  margin: 1.25rem 0 0;
  color: color-mix(in srgb, var(--white) 65%, transparent);
  font-size: 0.95rem;
}

/* Footer */

.site-footer {
  padding: 1.75rem var(--space) 2.25rem;
  background: var(--sidebar-mid);
  color: color-mix(in srgb, var(--white) 75%, transparent);
}

.footer-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.25rem;
  align-items: baseline;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--white);
}

.footer-tag {
  color: var(--blue-mist);
  font-size: 0.92rem;
}

.footer-copy {
  margin-left: auto;
  font-size: 0.9rem;
}

.footer-address {
  width: min(100%, var(--max));
  margin: 0.85rem auto 0;
  font-style: normal;
  font-size: 0.9rem;
}

.footer-address a:hover {
  color: var(--blue-mist);
}

/* Reveal motion */

.reveal {
  opacity: 0;
  transform: translateY(1.1rem);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal-delay-1 {
  transition-delay: 0.08s;
}

.reveal-delay-2 {
  transition-delay: 0.16s;
}

.reveal-delay-3 {
  transition-delay: 0.24s;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

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

  .reveal,
  .reveal-delay-1,
  .reveal-delay-2,
  .reveal-delay-3 {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-canopy,
  .hero-roots span {
    animation: none;
  }
}