*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-bg:        #f4fafa;
  --c-navy:      #0a0c22;
  --c-deep:      #0866A2;
  --c-mid:       #2484C3;
  --c-light:     #6BC9ED;
  --c-slate:     #6e8291;
  --c-white:     #ffffff;
  --c-border:    rgba(8,102,162,0.12);
  --c-border-lg: rgba(8,102,162,0.22);
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body:    'DM Sans', sans-serif;
  --font-signet:  'Geist', 'DM Sans', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--c-bg);
  color: var(--c-navy);
  font-family: var(--font-body, sans-serif), serif;
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}

/* ── NOISE TEXTURE ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.5rem 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(244,250,250,0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--c-border);
}

.nav-brand {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.nav-logo {
  height: 2rem;
  width: auto;
}

.nav-brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.nav-signet {
  font-family: var(--font-signet, sans-serif), serif;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--c-navy);
  line-height: 1;
}

.nav-by {
  font-size: 0.6rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-deep);
  line-height: 1;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-slate);
  text-decoration: none;
  transition: color 0.25s;
}

.nav-links a:hover { color: var(--c-deep); }

.nav-cta {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-white) !important;
  background: var(--c-navy);
  padding: 0.55rem 1.4rem;
  border-radius: 2px;
  text-decoration: none;
  transition: background 0.25s !important;
}
.nav-cta:hover { background: var(--c-deep) !important; }

.nav-back {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-slate);
  text-decoration: none;
  transition: color 0.25s;
}
.nav-back:hover { color: var(--c-deep); }

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 101;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--c-navy);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

nav.nav-open .nav-hamburger span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
nav.nav-open .nav-hamburger span:nth-child(2) {
  opacity: 0;
}
nav.nav-open .nav-hamburger span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

section { position: relative; z-index: 1; }

/* ── HERO (index page) ── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 10rem 4rem 6rem;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-eyebrow {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-deep);
  margin-bottom: 2rem;
}

.hero-headline {
  font-family: var(--font-display, sans-serif), serif;
  font-size: clamp(3.2rem, 7vw, 6rem);
  font-weight: 300;
  line-height: 1.08;
  color: var(--c-navy);
  max-width: 840px;
  margin-bottom: 2.5rem;
}

.hero-headline em {
  font-style: italic;
  color: var(--c-deep);
}

.hero-sub {
  font-size: 1.05rem;
  font-weight: 300;
  color: var(--c-slate);
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.btn-primary {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-white);
  background: var(--c-navy);
  padding: 0.9rem 2.2rem;
  border-radius: 2px;
  text-decoration: none;
  display: inline-block;
  transition: background 0.25s;
}
.btn-primary:hover { background: var(--c-deep); }

.hero-ghost-link {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-deep);
  text-decoration: none;
  transition: color 0.25s;
  display: inline-block;
}
.hero-ghost-link:hover { color: var(--c-navy); }

/* Hero pillars graphic */
.hero-graphic {
  margin-top: 5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--c-border-lg);
  display: flex;
  align-items: center;
  gap: 5rem;
}

.hero-pillars {
  display: flex;
  gap: 3rem;
  flex: 1;
}

.hero-pillar {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.hero-pillar-label {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-deep);
}

.hero-pillar-value {
  font-family: var(--font-display, sans-serif), serif;
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--c-navy);
  line-height: 1.2;
}

/* ── SECTION SHARED ── */
.section-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 9rem 4rem;
}

.section-eyebrow {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-deep);
  margin-bottom: 1.2rem;
}

.section-title {
  font-family: var(--font-display, sans-serif), serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 300;
  line-height: 1.18;
  color: var(--c-navy);
  max-width: 700px;
  margin-bottom: 4rem;
}

.section-title em { font-style: italic; color: var(--c-deep); }

/* Two-col layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
}

.two-col.reverse { direction: rtl; }
.two-col.reverse > * { direction: ltr; }

.col-body p {
  font-size: 0.95rem;
  color: var(--c-slate);
  line-height: 1.9;
  margin-bottom: 1.2rem;
}

.col-body p:last-child { margin-bottom: 0; }

.col-body strong {
  color: var(--c-navy);
  font-weight: 400;
}

/* ── SVG GRAPHIC PANELS ── */
.graphic-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
}

.graphic-panel svg {
  width: 100%;
  max-width: 380px;
  height: auto;
}

/* ── SECTION BACKGROUNDS ── */
.section-pbd { background: var(--c-white); }

.section-dark {
  background: var(--c-navy);
}

.section-dark .section-eyebrow { color: var(--c-light); }
.section-dark .section-title { color: var(--c-white); }
.section-dark .section-title em { color: var(--c-light); }
.section-dark .col-body p { color: rgba(255,255,255,0.55); }
.section-dark .col-body p strong { color: rgba(255,255,255,0.88); }

.section-ip { background: var(--c-bg); }

.section-compliance { background: var(--c-light); }
.section-compliance .section-eyebrow { color: var(--c-navy); opacity: 0.6; }
.section-compliance .section-title { color: var(--c-navy); }
.section-compliance .section-title em { color: var(--c-deep); font-style: italic; }
.section-compliance .col-body p { color: var(--c-navy); opacity: 0.7; }
.section-compliance .col-body p strong { color: var(--c-navy); opacity: 1; }

/* ── USE CASES STRIP (index page) ── */
.usecases {
  background: var(--c-white);
  padding: 6rem 4rem;
  border-top: 1px solid var(--c-border-lg);
}

.usecases-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.usecases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--c-border-lg);
  margin-top: 3rem;
}

.usecase-item {
  padding: 2rem 1.75rem;
  border-right: 1px solid var(--c-border-lg);
  transition: background 0.25s;
}

.usecase-item:last-child { border-right: none; }
.usecase-item:hover { background: var(--c-bg); }

.usecase-tag {
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-deep);
  margin-bottom: 0.75rem;
  display: block;
}

.usecase-name {
  font-family: var(--font-display, sans-serif), serif;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--c-navy);
  margin-bottom: 0.5rem;
  line-height: 1.25;
}

.usecase-desc {
  font-size: 0.82rem;
  color: var(--c-slate);
  line-height: 1.75;
}

/* ── CTA ── */
.cta-section {
  background: var(--c-navy);
  padding: 9rem 4rem 5rem;
  text-align: center;
}

.cta-inner { max-width: 620px; margin: 0 auto; }

.cta-eyebrow {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-light);
  margin-bottom: 1.5rem;
}

.cta-title {
  font-family: var(--font-display, sans-serif), serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 300;
  line-height: 1.18;
  color: var(--c-white);
  margin-bottom: 1.5rem;
}

.cta-title em { font-style: italic; color: var(--c-light); }

.cta-sub {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.48);
  line-height: 1.75;
  margin-bottom: 3rem;
}

.cta-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.btn-light {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-navy);
  background: var(--c-white);
  padding: 0.9rem 2.2rem;
  border-radius: 2px;
  text-decoration: none;
  transition: background 0.25s;
  display: inline-block;
}
.btn-light:hover { background: var(--c-light); }

.cta-social {
  display: flex;
  gap: 2rem;
  align-items: center;
  justify-content: center;
}

.cta-links {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-outline {
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.2);
  padding-bottom: 1px;
  transition: color 0.25s, border-color 0.25s;
}
.btn-outline:hover { color: var(--c-white); border-color: var(--c-light); }

/* ── FOOTER ── */
footer {
  background: var(--c-navy);
  border-top: 1px solid rgba(255,255,255,0.07);
  padding: 3rem 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}


.footer-brand {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.footer-logo {
  height: 1.75rem;
  width: auto;
}

.footer-brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.footer-signet {
  font-family: var(--font-signet, sans-serif), serif;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-white);
  letter-spacing: 0.02em;
}

.footer-by {
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-light);
}

.footer-center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  font-size: 0.68rem;
  color: rgba(255,255,255,0.35);
  text-decoration: none;
  letter-spacing: 0.1em;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--c-light); }

.footer-legal {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.footer-legal-link {
  font-size: 0.65rem;
  color: rgba(255,255,255,0.25);
  text-decoration: none;
  letter-spacing: 0.08em;
  transition: color 0.2s;
}
.footer-legal-link:hover { color: var(--c-light); }

.footer-legal-sep { font-size: 0.65rem; color: rgba(255,255,255,0.15); }

.footer-copy {
  font-size: 0.65rem;
  color: rgba(255,255,255,0.2);
  letter-spacing: 0.08em;
}

/* ── USE CASES PAGE ── */

/* Page header */
.page-header {
  padding: 10rem 4rem 5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.page-eyebrow {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-deep);
  margin-bottom: 1.5rem;
}

.page-headline {
  font-family: var(--font-display, sans-serif), serif;
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 300;
  line-height: 1.1;
  color: var(--c-navy);
  max-width: 720px;
  margin-bottom: 1.5rem;
}

.page-headline em { font-style: italic; color: var(--c-deep); }

.page-sub {
  font-size: 1rem;
  color: var(--c-slate);
  max-width: 620px;
  line-height: 1.85;
}

/* Intro strip */
.intro-strip {
  background: var(--c-navy);
  padding: 4rem;
}

.intro-strip-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid rgba(107,201,237,0.2);
}

.intro-pill {
  padding: 1.75rem 2rem;
  border-right: 1px solid rgba(107,201,237,0.15);
  transition: background 0.25s;
}

.intro-pill:last-child { border-right: none; }
.intro-pill:hover { background: rgba(107,201,237,0.05); }

.intro-pill-label {
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(107,201,237,0.6);
  margin-bottom: 0.5rem;
  display: block;
}

.intro-pill-value {
  font-family: var(--font-display, sans-serif), serif;
  font-size: 1rem;
  font-weight: 300;
  color: var(--c-white);
  line-height: 1.35;
  font-style: italic;
}

/* Use case sections */
.use-section {
  padding: 7rem 4rem;
}

.use-section:nth-child(odd) { background: var(--c-white); }
.use-section:nth-child(even) { background: var(--c-bg); }

.use-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.use-eyebrow {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-deep);
  margin-bottom: 1.2rem;
}

.use-title {
  font-family: var(--font-display, sans-serif), serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  line-height: 1.15;
  color: var(--c-navy);
  max-width: 700px;
  margin-bottom: 4rem;
}

.use-title em { font-style: italic; color: var(--c-deep); }

/* Use case cards grid */
.use-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--c-border-lg);
  border: 1px solid var(--c-border-lg);
}

.use-card {
  background: var(--c-white);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  transition: background 0.25s;
}

.use-section:nth-child(even) .use-card { background: var(--c-bg); }
.use-card:hover { background: var(--c-bg) !important; }
.use-section:nth-child(even) .use-card:hover { background: var(--c-white) !important; }

.use-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--c-light);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s cubic-bezier(0.16,1,0.3,1);
}

.use-card:hover::before { transform: scaleX(1); }

.use-card-tag {
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-deep);
  margin-bottom: 1rem;
  display: block;
}

.use-card-title {
  font-family: var(--font-display, sans-serif), serif;
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--c-navy);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.use-card-body {
  font-size: 0.85rem;
  color: var(--c-slate);
  line-height: 1.82;
}

/* Unique value table */
.value-section {
  background: var(--c-navy);
  padding: 7rem 4rem;
}

.value-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.value-eyebrow {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-light);
  margin-bottom: 1.2rem;
}

.value-title {
  font-family: var(--font-display, sans-serif), serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  line-height: 1.15;
  color: var(--c-white);
  max-width: 640px;
  margin-bottom: 4rem;
}

.value-title em { font-style: italic; color: var(--c-light); }

.value-rows {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.value-row {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 0;
  border: 1px solid rgba(107,201,237,0.15);
  background: rgba(107,201,237,0.04);
  transition: background 0.25s, border-color 0.25s;
}

.value-row:hover {
  background: rgba(107,201,237,0.08);
  border-color: rgba(107,201,237,0.35);
}

.value-row-label {
  padding: 1.5rem 2rem;
  border-right: 1px solid rgba(107,201,237,0.15);
  font-family: var(--font-display, sans-serif), serif;
  font-size: 1.1rem;
  font-weight: 400;
  font-style: italic;
  color: var(--c-light);
  display: flex;
  align-items: center;
}

.value-row-desc {
  padding: 1.5rem 2rem;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  line-height: 1.8;
  display: flex;
  align-items: center;
}

/* Closing statement */
.closing {
  background: var(--c-light);
  padding: 6rem 4rem;
}

.closing-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.closing-title {
  font-family: var(--font-display, sans-serif), serif;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 300;
  line-height: 1.2;
  color: var(--c-navy);
}

.closing-title em { font-style: italic; }

.closing-body {
  font-size: 0.95rem;
  color: var(--c-navy);
  opacity: 0.72;
  line-height: 1.85;
}

/* ── HOW IT WORKS PAGE ── */

.architecture {
  background: var(--c-navy);
  padding: 7rem 4rem;
}

.architecture-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.arch-eyebrow {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-light);
  margin-bottom: 1.2rem;
}

.arch-title {
  font-family: var(--font-display, sans-serif), serif;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 300;
  color: var(--c-white);
  margin-bottom: 4rem;
  line-height: 1.2;
}

.arch-title em { font-style: italic; color: var(--c-light); }

/* Protocol stack diagram */
.stack-diagram {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-bottom: 4rem;
}

.stack-layer {
  display: grid;
  grid-template-columns: 180px 1fr 200px;
  align-items: center;
  gap: 2rem;
  padding: 1.75rem 2rem;
  border: 1px solid rgba(107,201,237,0.15);
  position: relative;
  cursor: default;
  transition: border-color 0.3s, background 0.3s;
}

.stack-layer:hover {
  border-color: rgba(107,201,237,0.4);
  background: rgba(107,201,237,0.04);
}

.stack-layer.top {
  background: rgba(107,201,237,0.08);
  border-color: rgba(107,201,237,0.35);
}

.stack-num {
  font-family: var(--font-display, sans-serif), serif;
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: rgba(107,201,237,0.4);
  text-transform: uppercase;
}

.stack-label {
  font-family: var(--font-display, sans-serif), serif;
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--c-white);
  line-height: 1.25;
}

.stack-label em { font-style: italic; color: var(--c-light); }

.stack-desc {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.7;
  text-align: right;
}

.stack-layer.top .stack-label { color: var(--c-light); }
.stack-layer.top .stack-desc { color: rgba(107,201,237,0.7); }
.stack-layer.top .stack-num { color: rgba(107,201,237,0.7); }

/* Architecture SVG overview */
.arch-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding-top: 4rem;
  border-top: 1px solid rgba(107,201,237,0.1);
}

.arch-visual-text h3 {
  font-family: var(--font-display, sans-serif), serif;
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--c-white);
  margin-bottom: 1rem;
  line-height: 1.3;
}

.arch-visual-text p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.85;
  margin-bottom: 0.9rem;
}

.arch-visual-text p:last-child { margin-bottom: 0; }

.arch-visual-text strong { color: rgba(255,255,255,0.82); font-weight: 400; }

.arch-svg-wrap {
  display: flex;
  justify-content: center;
}

/* Scenarios section */
.scenarios {
  background: var(--c-white);
  padding: 7rem 4rem;
}

.scenarios-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.scen-eyebrow {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-deep);
  margin-bottom: 1.2rem;
}

.scen-title {
  font-family: var(--font-display, sans-serif), serif;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 300;
  color: var(--c-navy);
  margin-bottom: 4rem;
  line-height: 1.2;
  max-width: 640px;
}

.scen-title em { font-style: italic; color: var(--c-deep); }

.scenario-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--c-border-lg);
}

.scenario {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 0;
  border-bottom: 1px solid var(--c-border-lg);
  transition: background 0.25s;
}

.scenario:last-child { border-bottom: none; }
.scenario:hover { background: var(--c-bg); }

.scenario-left {
  padding: 2.5rem 2rem;
  border-right: 1px solid var(--c-border-lg);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.scenario-tag {
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-deep);
}

.scenario-who {
  font-family: var(--font-display, sans-serif), serif;
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--c-navy);
  line-height: 1.25;
}

.scenario-right {
  padding: 2.5rem 2.5rem;
}

.scenario-steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.step-num {
  font-family: var(--font-display, sans-serif), serif;
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--c-light);
  min-width: 1.4rem;
  padding-top: 0.1rem;
}

.step-text {
  font-size: 0.88rem;
  color: var(--c-slate);
  line-height: 1.75;
}

.step-text strong { color: var(--c-navy); font-weight: 400; }

/* Technology section */
.technology {
  background: var(--c-bg);
  padding: 7rem 4rem;
}

.technology-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.tech-eyebrow {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-deep);
  margin-bottom: 1.2rem;
}

.tech-title {
  font-family: var(--font-display, sans-serif), serif;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 300;
  color: var(--c-navy);
  margin-bottom: 4rem;
  line-height: 1.2;
}

.tech-title em { font-style: italic; color: var(--c-deep); }

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--c-border-lg);
  border: 1px solid var(--c-border-lg);
}

.tech-cell {
  background: var(--c-bg);
  padding: 2.5rem;
  transition: background 0.25s;
}

.tech-cell:hover { background: var(--c-white); }

.tech-cell-label {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-deep);
  margin-bottom: 0.75rem;
  display: block;
}

.tech-cell-title {
  font-family: var(--font-display, sans-serif), serif;
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--c-navy);
  margin-bottom: 0.75rem;
  line-height: 1.25;
}

.tech-cell-body {
  font-size: 0.85rem;
  color: var(--c-slate);
  line-height: 1.8;
}

.tech-cell-body strong { color: var(--c-navy); font-weight: 400; }

/* ── TEAM PAGE ── */
.team-hero {
  padding: 12rem 4rem 6rem;
  max-width: 1100px;
  margin: 0 auto;
}

.team-section {
  padding: 8rem 4rem;
  background: var(--c-white);
}

.team-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 6rem;
}

.bio-card {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 5rem;
  align-items: start;
  padding-bottom: 6rem;
  border-bottom: 1px solid var(--c-border-lg);
}

.bio-card:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.bio-photo-col {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: sticky;
  top: 6rem;
}

.bio-photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center top;
  filter: grayscale(15%);
  border: 1px solid var(--c-border-lg);
}

.bio-name {
  font-family: var(--font-display), serif;
  font-size: 1.6rem;
  font-weight: 400;
  color: var(--c-navy);
  line-height: 1.2;
}

.bio-title {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-deep);
  margin-top: 0.25rem;
}

.bio-linkedin {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-slate);
  text-decoration: none;
  border-bottom: 1px solid var(--c-border-lg);
  padding-bottom: 1px;
  transition: color 0.25s, border-color 0.25s;
  width: fit-content;
}

.bio-linkedin:hover { color: var(--c-deep); border-color: var(--c-light); }

.bio-body {
  font-size: 0.97rem;
  color: var(--c-slate);
  line-height: 1.9;
}

.bio-body p { margin-bottom: 1.25rem; }
.bio-body p:last-child { margin-bottom: 0; }

.bio-body strong {
  color: var(--c-navy);
  font-weight: 400;
}

.bridge-section {
  padding: 5rem 4rem;
  background: var(--c-bg);
}

.bridge-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 6rem;
  align-items: center;
  padding: 3rem;
  border: 1px solid var(--c-border-lg);
  background: var(--c-white);
}

.bridge-label {
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-deep);
  margin-bottom: 1rem;
}

.bridge-title {
  font-family: var(--font-display), serif;
  font-size: 1.6rem;
  font-weight: 300;
  line-height: 1.3;
  color: var(--c-navy);
}

.bridge-title em { font-style: italic; color: var(--c-deep); }

.bridge-body {
  font-size: 0.92rem;
  color: var(--c-slate);
  line-height: 1.85;
}

.bridge-body a {
  color: var(--c-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--c-light);
  padding-bottom: 1px;
  transition: color 0.25s, border-color 0.25s;
}

.bridge-body a:hover { color: var(--c-navy); border-color: var(--c-deep); }

.partners-section {
  padding: 6rem 4rem;
  background: var(--c-bg);
}

.partners-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.partner-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 4rem;
  align-items: start;
  padding: 2.5rem;
  border: 1px solid var(--c-border-lg);
  background: var(--c-white);
}

.partner-org {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.partner-org-name {
  font-family: var(--font-display), serif;
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--c-navy);
}

.partner-org-link {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--c-light);
  padding-bottom: 1px;
  width: fit-content;
  transition: color 0.25s;
}

.partner-org-link:hover { color: var(--c-navy); }

.partner-org-logo {
  width: 100%;
  max-width: 80px;
  height: auto;
  display: block;
  margin-top: 1rem;
  padding-left: 1rem;
  opacity: 0.85;
}

.partner-advisor-name {
  font-size: 1rem;
  font-weight: 400;
  color: var(--c-navy);
  margin-bottom: 0.25rem;
}

.partner-advisor-title {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-deep);
  margin-bottom: 0.75rem;
}

.partner-bio {
  font-size: 0.88rem;
  color: var(--c-slate);
  line-height: 1.85;
}

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  nav { padding: 1.2rem 1.5rem; position: fixed; }
  .nav-hamburger { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 0 1rem;
    background: rgba(244,250,250,0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--c-border);
  }
  nav.nav-open .nav-links { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a {
    display: block;
    padding: 0.85rem 1.5rem;
    font-size: 0.75rem;
  }
  .nav-back { font-size: 0.65rem; letter-spacing: 0.12em; }

  /* Index hero */
  .hero { padding: 8rem 1.5rem 4rem; }
  .hero-graphic { flex-direction: column; gap: 2rem; }
  .hero-pillars { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem 3rem; }

  /* Shared sections */
  .section-inner { padding: 5rem 1.5rem; }
  .two-col { grid-template-columns: 1fr; gap: 3rem; }
  .two-col.reverse { direction: ltr; }
  .usecases { padding: 4rem 1.5rem; }
  .usecases-grid { grid-template-columns: 1fr 1fr; }
  .usecase-item:nth-child(2) { border-right: none; }
  .usecase-item:nth-child(3) { border-top: 1px solid var(--c-border-lg); }
  .usecase-item:nth-child(4) { border-top: 1px solid var(--c-border-lg); border-right: none; }
  .cta-section { padding: 5rem 1.5rem 3rem; }
  footer { flex-direction: column; gap: 1.5rem; text-align: center; padding: 2.5rem 1.5rem; }
  .footer-center { position: static; transform: none; }
  .footer-links { gap: 1.2rem; }

  /* Use cases page */
  .page-header { padding: 8rem 1.5rem 4rem; }
  .intro-strip { padding: 3rem 1.5rem; }
  .intro-strip-inner { grid-template-columns: 1fr 1fr; }
  .intro-pill:nth-child(2) { border-right: none; }
  .intro-pill:nth-child(3) { border-top: 1px solid rgba(107,201,237,0.15); }
  .intro-pill:nth-child(4) { border-top: 1px solid rgba(107,201,237,0.15); border-right: none; }
  .use-section { padding: 5rem 1.5rem; }
  .use-grid { grid-template-columns: 1fr; }
  .value-section { padding: 5rem 1.5rem; }
  .value-row { grid-template-columns: 1fr; }
  .value-row-label { border-right: none; border-bottom: 1px solid rgba(107,201,237,0.15); }
  .closing { padding: 4rem 1.5rem; }
  .closing-inner { grid-template-columns: 1fr; gap: 2rem; }
  .cta-links { flex-direction: column; gap: 1rem; align-items: center; }

  /* How It Works page */
  .architecture { padding: 5rem 1.5rem; }
  .stack-layer { grid-template-columns: 1fr; gap: 0.5rem; }
  .stack-desc { text-align: left; }
  .arch-visual { grid-template-columns: 1fr; gap: 3rem; }
  .scenarios { padding: 5rem 1.5rem; }
  .scenario { grid-template-columns: 1fr; }
  .scenario-left { border-right: none; border-bottom: 1px solid var(--c-border-lg); }
  .technology { padding: 5rem 1.5rem; }
  .tech-grid { grid-template-columns: 1fr; }

  /* Team page */
  .team-hero { padding: 8rem 1.5rem 4rem; }
  .team-section { padding: 5rem 1.5rem; }
  .bio-card { grid-template-columns: 1fr; gap: 2.5rem; }
  .bio-photo-col { position: static; flex-direction: row; align-items: center; gap: 1.5rem; }
  .bio-photo { width: 120px; height: 120px; border-radius: 50%; }
  .bridge-section { padding: 3rem 1.5rem; }
  .bridge-inner { grid-template-columns: 1fr; gap: 2rem; padding: 2rem; }
  .partners-section { padding: 4rem 1.5rem; }
  .partner-row { grid-template-columns: 1fr; gap: 1.5rem; }
}