/* style.css — KVDOS Capital Design System */

/* ============================================
   CUSTOM PROPERTIES — DARK MODE ONLY
   ============================================ */
:root {
  /* === Type Scale (fluid) === */
  --text-xs:   clamp(0.65rem,  0.6rem  + 0.25vw, 0.75rem);
  --text-sm:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-base: clamp(1rem,     0.9rem  + 0.5vw,  1.125rem);
  --text-lg:   clamp(1.125rem, 0.95rem + 0.85vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1rem    + 1.5vw,  2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3.5rem,   0.5rem  + 9vw,    11rem);

  /* === 4px Spacing System === */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* === Dark-Mode Color Palette === */
  --color-bg:            #000000;
  --color-surface:       #0a0a0a;
  --color-surface-2:     #111111;
  --color-surface-3:     #161616;
  --color-divider:       rgba(255,255,255,0.08);
  --color-border:        rgba(255,255,255,0.10);
  --color-border-bright: rgba(255,255,255,0.20);

  /* === Text Hierarchy === */
  --color-text:         #ffffff;
  --color-text-muted:   #a0a0a0;
  --color-text-faint:   #505050;

  /* === Section Accents === */
  --color-accent-purple: #7B2FBE;
  --color-accent-purple-bright: #9B4FDE;
  --color-accent-purple-dim:    rgba(123, 47, 190, 0.15);
  --color-accent-gold:   #D4A520;
  --color-accent-gold-bright: #E8BF40;
  --color-accent-gold-dim:    rgba(212, 165, 32, 0.15);
  --color-accent-teal:   #00BFA6;
  --color-accent-teal-bright: #20DFC6;
  --color-accent-teal-dim:    rgba(0, 191, 166, 0.15);

  /* === Typography === */
  --font-display: 'Outfit', 'Helvetica Neue', sans-serif;
  --font-body:    'DM Sans', 'Helvetica Neue', sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* === Transitions === */
  --ease-golden: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-exit:   cubic-bezier(0.4, 0, 1, 1);
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* === Radius === */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;

  /* === Content Widths === */
  --content-narrow:  640px;
  --content-default: 960px;
  --content-wide:    1280px;
}

/* ============================================
   GLOBAL BODY
   ============================================ */
body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  overflow-x: hidden;
}

/* ============================================
   SKIP LINK
   ============================================ */
.skip-link {
  position: fixed;
  top: var(--space-4);
  left: var(--space-4);
  background: var(--color-accent-purple);
  color: white;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  z-index: 9999;
  transform: translateY(-200%);
  transition: transform var(--transition-interactive);
  border-radius: var(--radius-sm);
}
.skip-link:focus {
  transform: translateY(0);
}

/* ============================================
   TYPOGRAPHY UTILITIES
   ============================================ */
.font-display {
  font-family: var(--font-display);
  font-weight: 700;
}
.font-mono {
  font-family: var(--font-mono);
}

.section-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.section-label::after {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: currentColor;
  opacity: 0.5;
}

.headline-display {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-2xl);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.05;
  color: var(--color-text);
}

.body-text {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text-muted);
  max-width: 65ch;
}

/* ============================================
   HORIZONTAL RULE
   ============================================ */
.rule {
  border: none;
  border-top: 1px solid var(--color-divider);
  width: 100%;
}

/* ============================================
   SCROLL PROGRESS INDICATOR
   ============================================ */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--color-accent-teal);
  z-index: 9998;
  transition: width 0.1s linear;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-8);
  max-width: var(--content-wide);
  margin-inline: auto;
  gap: var(--space-8);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-text);
  white-space: nowrap;
  flex-shrink: 0;
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.nav-logo-cap {
  font-size: var(--text-xs);
  font-weight: 400;
  letter-spacing: 0.25em;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
  white-space: nowrap;
  cursor: pointer;
}

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

.nav-links a.active {
  color: var(--color-text);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

.nav-index-btn {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  transition: color var(--transition-interactive), border-color var(--transition-interactive), background var(--transition-interactive);
  cursor: pointer;
  background: transparent;
  white-space: nowrap;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.nav-index-btn:hover {
  color: var(--color-text);
  border-color: var(--color-border-bright);
  background: rgba(255,255,255,0.04);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-2);
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-interactive);
}
.nav-hamburger:hover {
  border-color: var(--color-border-bright);
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--color-text);
  transition: transform var(--transition-interactive), opacity var(--transition-interactive);
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Mobile drawer */
.nav-mobile-drawer {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.97);
  z-index: 99;
  padding: calc(var(--space-16) + var(--space-8)) var(--space-8) var(--space-8);
  flex-direction: column;
  gap: var(--space-6);
  border-top: 1px solid var(--color-divider);
  overflow-y: auto;
}
.nav-mobile-drawer.open {
  display: flex;
}
.nav-mobile-drawer a {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-divider);
  transition: color var(--transition-interactive);
  cursor: pointer;
}
.nav-mobile-drawer a:hover {
  color: var(--color-text);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

/* Animated gradient background — dark, refined, abstract */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: #050505;
  overflow: hidden;
}

/* Video layer */
.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%) scale(1.15);
  filter: saturate(0.7) brightness(0.35) contrast(1.1);
  object-fit: cover;
}

/* Fallback image layer if video fails */
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('./hero-bg.jpg') center/cover no-repeat;
  filter: blur(8px) saturate(0.8) brightness(0.4);
  opacity: 0.9;
  z-index: -1;
}

/* Subtle dark vignette on top */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 50% 50%, transparent 30%, rgba(0,0,0,0.6) 100%);
  pointer-events: none;
}

@keyframes bg-drift {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-3%, -5%) scale(1.06); }
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  padding: var(--space-32) var(--space-8) var(--space-16);
  max-width: var(--content-wide);
  margin-inline: auto;
  width: 100%;
  padding-top: clamp(var(--space-20), 10vw, var(--space-32));
}

.hero-inner-centered {
  justify-content: center;
  align-items: center;
  min-height: 100dvh;
  text-align: center;
  padding-top: 0;
}

/* Hero headline — the tagline as the focal point */
.hero-headline {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.hero-headline-top {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1rem, 2.2vw, 1.8rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.hero-headline-bottom {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1rem, 2.2vw, 1.8rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text);
  line-height: 1.4;
}

/* Decorative plus markers */
.hero-plus {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  position: absolute;
  left: clamp(var(--space-4), 4vw, var(--space-12));
  pointer-events: none;
  letter-spacing: 0;
  line-height: 1;
}
.hero-plus-1 { top: 22%; }
.hero-plus-2 { top: 45%; }
.hero-plus-3 { top: 68%; }

/* Tagline area */
.hero-tagline-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin-bottom: var(--space-16);
}

.hero-tagline-bar {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-teal), transparent);
  flex-shrink: 0;
  animation: bar-pulse 3s ease-in-out infinite;
}
@keyframes bar-pulse {
  0%, 100% { opacity: 0.6; width: 60px; }
  50% { opacity: 1; width: 80px; }
}

.hero-tagline {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 400;
}

/* Massive wordmark */
.hero-wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(4rem, 17.5vw, 18rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  line-height: 0.9;
  white-space: nowrap;
  display: block;
  width: 100%;
}

.hero-wordmark-sub {
  font-size: clamp(1.5rem, 5.5vw, 6rem);
  font-weight: 300;
  letter-spacing: 0.35em;
  color: var(--color-text-muted);
  display: block;
  margin-top: var(--space-2);
}

/* Corner decorative code */
.hero-code {
  position: absolute;
  bottom: var(--space-8);
  left: var(--space-8);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.1em;
  z-index: 2;
}

.hero-scroll-hint {
  position: absolute;
  bottom: var(--space-8);
  right: var(--space-8);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.hero-scroll-hint::before {
  content: '';
  display: block;
  width: 1px;
  height: 24px;
  background: var(--color-text-faint);
  animation: scroll-line 2s ease-in-out infinite;
}
@keyframes scroll-line {
  0%, 100% { opacity: 0.3; height: 24px; }
  50% { opacity: 0.8; height: 32px; }
}

/* ============================================
   SECTION SHARED STYLES
   ============================================ */
.section {
  position: relative;
  padding: clamp(var(--space-16), 8vw, var(--space-32)) var(--space-8);
  border-top: 1px solid var(--color-divider);
}

/* Full-page sections for the four arms */
.section-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.section-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
}

.section-header {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
  align-items: start;
}

.section-number {
  font-family: var(--font-mono);
  font-size: var(--text-3xl);
  font-weight: 400;
  color: var(--color-text-faint);
  line-height: 1;
  letter-spacing: -0.02em;
  padding-top: var(--space-2);
}

.section-title-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.section-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

/* ============================================
   SCROLL REVEAL ANIMATION
   ============================================ */
/* Elements start visible — JS overrides to 0 opacity. */
/* This ensures content is always visible without JS. */
.reveal {
  opacity: 1;
  clip-path: inset(0 0 0% 0);
  transition: opacity 600ms var(--ease-golden), clip-path 600ms var(--ease-golden);
}

.reveal-delay-1 { transition-delay: 60ms; }
.reveal-delay-2 { transition-delay: 120ms; }
.reveal-delay-3 { transition-delay: 180ms; }
.reveal-delay-4 { transition-delay: 240ms; }
.reveal-delay-5 { transition-delay: 300ms; }

/* ============================================
   STATS ROW
   ============================================ */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  margin-top: var(--space-12);
}

.stat-item {
  padding: var(--space-8) var(--space-6);
  border-right: 1px solid var(--color-divider);
}
.stat-item:last-child {
  border-right: none;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

/* ============================================
   SECTION BODY — NARROW
   ============================================ */
.section-body-narrow {
  max-width: 640px;
}

/* Capability list — collapsed by default, expand on click */
.capability-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--color-divider);
  margin-top: var(--space-12);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 500ms var(--ease-golden), opacity 400ms var(--ease-golden), margin-top 400ms var(--ease-golden);
  margin-top: 0;
}

.capability-list.expanded {
  max-height: 800px;
  opacity: 1;
  margin-top: var(--space-12);
}

/* Toggle button to expand capabilities */
.capability-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-8);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: transparent;
  transition: color var(--transition-interactive), border-color var(--transition-interactive), background var(--transition-interactive);
  min-height: 44px;
}
.capability-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-accent-teal);
  background: var(--color-accent-teal-dim);
}
.capability-toggle .toggle-icon {
  display: inline-block;
  transition: transform 300ms var(--ease-golden);
  font-size: var(--text-sm);
  line-height: 1;
}
.capability-toggle.open .toggle-icon {
  transform: rotate(45deg);
}

.capability-item {
  padding: var(--space-6) var(--space-6) var(--space-6) 0;
  border-bottom: 1px solid var(--color-divider);
  border-right: 1px solid var(--color-divider);
}
.capability-item:nth-child(2n) {
  padding-left: var(--space-6);
  border-right: none;
}

.capability-marker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent-teal);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: var(--space-2);
}

.capability-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.capability-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 35ch;
}

@media (max-width: 768px) {
  .capability-list {
    grid-template-columns: 1fr;
  }
  .capability-item {
    border-right: none;
    padding-left: 0;
  }
  .capability-item:nth-child(2n) {
    padding-left: 0;
  }
}

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

.accent-purple { color: var(--color-accent-purple-bright); }
.accent-gold   { color: var(--color-accent-gold-bright); }
.accent-teal   { color: var(--color-accent-teal-bright); }

/* ============================================
   SECTION 02: ALGO TRADING
   ============================================ */
#algo {
  background-color: var(--color-surface);
}

.algo-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

/* Data matrix visual */
.data-matrix-wrap {
  position: relative;
  overflow: hidden;
  height: clamp(280px, 30vw, 420px);
  border: 1px solid var(--color-divider);
  background: var(--color-surface);
}

.data-matrix-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-divider);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent-gold-bright);
  letter-spacing: 0.12em;
  background: var(--color-surface-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.data-matrix-header::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent-gold-bright);
  border-radius: 50%;
  animation: blink 1.5s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}

#data-matrix {
  position: absolute;
  top: 32px;
  left: 0;
  right: 0;
  bottom: 0;
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  color: var(--color-accent-gold);
  opacity: 0.7;
  overflow: hidden;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(48px, 1fr));
  gap: var(--space-1);
  align-content: start;
}

.matrix-cell {
  text-align: right;
  transition: color 300ms var(--ease-golden), opacity 300ms var(--ease-golden);
  font-size: 10px;
}
.matrix-cell.flash {
  color: var(--color-accent-gold-bright);
  opacity: 1;
}

/* Matrix corner label */
.matrix-corner {
  position: absolute;
  bottom: var(--space-4);
  right: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.1em;
}

/* ============================================
   SECTION 03: FAMILY OFFICE
   ============================================ */
#family-office {
  background-color: var(--color-surface);
}

.office-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
}

.office-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-divider);
}

.subsidiaries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--color-divider);
  margin-top: var(--space-8);
}

.subsidiary-item {
  padding: var(--space-8) var(--space-6);
  border-right: 1px solid var(--color-divider);
  position: relative;
}
.subsidiary-item:last-child {
  border-right: none;
}

.subsidiary-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent-teal);
  margin-bottom: var(--space-3);
  display: block;
}

.subsidiary-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.subsidiary-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Office feature list */
.office-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border-top: 1px solid var(--color-divider);
}

.office-feature {
  padding: var(--space-6) var(--space-6) var(--space-6) 0;
  border-bottom: 1px solid var(--color-divider);
  border-right: 1px solid var(--color-divider);
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}
.office-feature:nth-child(2n) {
  padding-left: var(--space-6);
  border-right: none;
}
.office-feature:nth-last-child(-n+2) {
  border-bottom: none;
}

.feature-marker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent-teal);
  flex-shrink: 0;
  padding-top: 2px;
  letter-spacing: 0.1em;
}

.feature-text h4 {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.feature-text p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 40ch;
}

/* ============================================
   SECTION 04: VENTURES
   ============================================ */
#ventures {
  background-color: var(--color-bg);
}

.ventures-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--color-divider);
  margin-top: var(--space-12);
}

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

.venture-card {
  padding: var(--space-8);
  border-right: 1px solid var(--color-divider);
  position: relative;
  overflow: hidden;
  transition: background var(--transition-interactive);
}
.venture-card:last-child {
  border-right: none;
}
.venture-card:hover {
  background: var(--color-surface);
}

/* Blueprint corner marker */
.venture-card::before {
  content: attr(data-code);
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.1em;
}

.venture-num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  display: block;
  margin-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-divider);
  padding-bottom: var(--space-4);
}

.venture-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  line-height: 1.1;
  margin-bottom: var(--space-4);
}

.venture-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  border: 1px solid currentColor;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-5);
  line-height: 1.5;
}

.venture-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}

.venture-status {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.venture-status::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

/* ============================================
   SECTION 05: CONTACT
   ============================================ */
#contact {
  background-color: var(--color-surface);
}

.contact-wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-3xl);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text);
  line-height: 1;
  margin-bottom: var(--space-12);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  padding-top: var(--space-12);
  border-top: 1px solid var(--color-divider);
}

.contact-info-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.contact-info-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

.contact-info-value {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-text);
  font-weight: 500;
}

.contact-info-value a {
  transition: color var(--transition-interactive);
}
.contact-info-value a:hover {
  color: var(--color-accent-teal-bright);
}

.social-links {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-6);
}

.social-link {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  transition: color var(--transition-interactive), border-color var(--transition-interactive), background var(--transition-interactive);
  min-height: 44px;
  display: flex;
  align-items: center;
  cursor: pointer;
}
.social-link:hover {
  color: var(--color-text);
  border-color: var(--color-accent-teal);
  background: var(--color-accent-teal-dim);
}

.contact-disclaimer {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.7;
  padding: var(--space-6);
  border: 1px solid var(--color-divider);
  background: var(--color-surface-3);
  letter-spacing: 0.05em;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
  background-color: var(--color-bg);
  border-top: 1px solid var(--color-divider);
  padding: var(--space-8);
}

.footer-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.08em;
}

.footer-legal {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.05em;
  opacity: 0.6;
  max-width: 50ch;
  text-align: right;
}

/* ============================================
   RESPONSIVE — MOBILE
   ============================================ */
@media (max-width: 1024px) {
  .nav-links {
    display: none;
  }
  .nav-index-btn {
    display: none;
  }
  .nav-hamburger {
    display: flex;
  }

  .algo-layout {
    grid-template-columns: 1fr;
  }

  .ventures-grid {
    grid-template-columns: 1fr;
  }

  .ventures-grid-2 {
    grid-template-columns: 1fr;
  }
  .venture-card {
    border-right: none;
    border-bottom: 1px solid var(--color-divider);
  }
  .venture-card:last-child {
    border-bottom: none;
  }

  .office-intro {
    grid-template-columns: 1fr;
  }

  .subsidiaries-grid {
    grid-template-columns: 1fr;
  }
  .subsidiary-item {
    border-right: none;
    border-bottom: 1px solid var(--color-divider);
  }
  .subsidiary-item:last-child {
    border-bottom: none;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }

  .office-features {
    grid-template-columns: 1fr;
  }
  .office-feature {
    border-right: none !important;
  }

  .stats-row {
    grid-template-columns: 1fr;
  }
  .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--color-divider);
  }
  .stat-item:last-child {
    border-bottom: none;
  }
}

@media (max-width: 768px) {
  .nav-inner {
    padding: var(--space-4);
  }

  .section {
    padding: clamp(var(--space-12), 6vw, var(--space-24)) var(--space-4);
  }

  .section-header {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .section-number {
    font-size: var(--text-xl);
  }

  .hero-inner {
    padding: var(--space-24) var(--space-4) var(--space-12);
  }

  .hero-wordmark {
    font-size: clamp(3rem, 14vw, 8rem);
    letter-spacing: 0.06em;
  }

  .hero-plus { display: none; }

  .contact-wordmark {
    font-size: var(--text-2xl);
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-legal {
    text-align: left;
  }

  .hero-tagline-wrap {
    margin-bottom: var(--space-8);
  }

  .hero-code,
  .hero-scroll-hint {
    display: none;
  }
}

@media (max-width: 480px) {
  .social-links {
    flex-direction: column;
  }
  .team-line-id {
    display: none;
  }
}

/* ============================================
   KVDOS CAPITAL — Sub-divisions
   ============================================ */
.capital-divisions {
  margin-top: var(--space-12);
  border-top: 1px solid var(--color-divider);
  display: flex;
  flex-direction: column;
  gap: 0;
}

.capital-div-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-divider);
}
.capital-div-item:last-child {
  border-bottom: none;
}

.capital-div-marker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  flex-shrink: 0;
  padding-top: 2px;
}

.capital-div-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.capital-div-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 40ch;
}

.capital-div-quote {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-style: italic;
  color: var(--color-accent-gold-bright);
  margin-top: var(--space-3);
  padding-left: var(--space-4);
  border-left: 2px solid var(--color-accent-gold);
  letter-spacing: 0.02em;
}

/* ============================================
   SECTION: TEAM — COMPACT
   ============================================ */
.team-list {
  border-top: 1px solid var(--color-divider);
}

.team-line {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
  transition: background var(--transition-interactive);
}
.team-line:hover {
  background: var(--color-surface);
  padding-left: var(--space-3);
  padding-right: var(--space-3);
  margin-left: calc(-1 * var(--space-3));
  margin-right: calc(-1 * var(--space-3));
}

.team-line-name {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  white-space: nowrap;
  flex-shrink: 0;
}

.team-line-rule {
  flex: 1;
  height: 1px;
  background: var(--color-divider);
  min-width: 12px;
}

.team-line-role {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.team-line-id {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
  opacity: 0.5;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Two-column team grid for consolidation */
.team-groups-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8) var(--space-16);
}

@media (max-width: 768px) {
  .team-groups-grid {
    grid-template-columns: 1fr;
  }
}

.team-group {
  margin-bottom: 0;
}

.team-group-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-1);
}

/* Team aerial photo */
.team-photo-wrap {
  max-width: 600px;
  border: 1px solid var(--color-divider);
  overflow: hidden;
}

.team-photo {
  width: 100%;
  height: auto;
  display: block;
  filter: saturate(0.85) brightness(0.9);
  transition: filter 400ms var(--ease-golden);
}

.team-photo-wrap:hover .team-photo {
  filter: saturate(1) brightness(1);
}

/* Team initial badge */
.team-initial {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--color-text-faint);
  margin-left: var(--space-1);
}

/* Team quote above photo */
.team-quote-above {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 300;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  white-space: nowrap;
}

/* Research page link in Quant section */
.research-page-link:hover {
  opacity: 0.7;
}

/* Active nav link */
.nav-link-active {
  color: var(--color-accent-teal) !important;
}