/* ============================================================
   RIFTFORM — Cinematic Elevation Pass
   Applied Intelligence Research & Systems
   Monochrome. System fonts only. Hard edges. Slow, inevitable motion.
   ============================================================ */

:root {
  /* ---- Canonical Brand Palette ---- */
  --oled-black: #0A0A0A;
  --bone-white: #F2F1EE;
  --graphite:   #2B2B2B;   /* rules, slabs */
  --soft-gray:  #8D8D8D;   /* secondary UI text */

  /* ---- Internal surface depth ---- */
  --charcoal:   #14161A;
  --slate:      #2A2D34;

  /* ---- Warm fracture light — atmospheric ONLY ---- */
  --fracture:   #F4E4CE;

  /* ---- Semantic ---- */
  --bg-page: var(--oled-black);
  --fg-1: var(--bone-white);
  --fg-2: var(--soft-gray);
  --fg-3: rgba(242, 241, 238, 0.34);
  --fg-4: rgba(242, 241, 238, 0.16);

  /* ---- Variables Aliases ---- */
  --fg-primary: var(--fg-1);
  --fg-secondary: var(--fg-2);
  --fg-tertiary: var(--fg-3);

  --rule:        rgba(242, 241, 238, 0.07);
  --rule-strong: rgba(242, 241, 238, 0.15);
  --rule-graphite: var(--graphite);

  /* ---- Type families — SYSTEM ONLY (no external fonts) ---- */
  --font-display: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-sans:    ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono:    ui-monospace, "SF Mono", "SFMono-Regular", Consolas, "Andale Mono", Monaco, monospace;

  /* ---- Type scale ---- */
  --fs-hero-head: clamp(20px, 2.4vw, 30px);
  --fs-editorial: clamp(30px, 4.6vw, 60px);
  --fs-h2: clamp(24px, 3.2vw, 44px);
  --fs-h3: clamp(19px, 1.5vw, 23px);
  --fs-body-lg: clamp(16px, 1.35vw, 19px);
  --fs-body: 15px;
  --fs-small: 13px;
  --fs-label: 11px;

  /* ---- Tracking ---- */
  --track-wordmark: 0.42em;   /* wide architectural wordmark feel */
  --track-label: 0.26em;
  --track-mono: 0.16em;

  /* ---- Motion ---- */
  --ease-rift: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-slow: 1100ms;
  --dur-med: 600ms;
  --dur-fast: 260ms;

  /* ---- Spacing ---- */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --space-xxl: 104px;
  --space-giant: 168px;

  --maxw: 1240px;
  --gutter: 48px;
}

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

html {
  scroll-behavior: smooth;
  background: var(--bg-page);
  color: var(--fg-1);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  overflow-x: hidden;
  background: var(--bg-page);
  position: relative;
}

/* Film grain — very restrained */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 998;
  pointer-events: none;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 240 240' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  width: 100%;
}

/* ---- Scroll progress (thin bone line, top) ---- */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 1px;
  width: 0%;
  background: var(--bone-white);
  z-index: 200;
  opacity: 0.5;
  transition: width 90ms linear;
}

/* ============================================================
   LABELS / EYEBROWS
   ============================================================ */
.eyebrow {
  font-family: var(--font-display);
  font-size: var(--fs-label);
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--fg-2);
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.eyebrow::before {
  content: attr(data-index);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: var(--track-mono);
  color: var(--fg-3);
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--rule);
}
.section-coord {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: var(--track-mono);
  color: var(--fg-3);
  text-transform: uppercase;
}

.section {
  padding: var(--space-giant) 0;
  position: relative;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  font-family: var(--font-display);
  font-size: 10.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  padding: 17px 34px;
  border: 1px solid var(--rule-strong);
  background: transparent;
  color: var(--fg-1);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--dur-fast) var(--ease-rift),
              color var(--dur-fast) var(--ease-rift);
}
.btn::before {
  content: "";
  position: absolute; inset: 0;
  background: var(--bone-white);
  transform: translateY(101%);
  transition: transform var(--dur-med) var(--ease-rift);
  z-index: -1;
}
.btn .btn-arrow { transition: transform var(--dur-fast) var(--ease-rift); }
.btn:hover { color: var(--oled-black); border-color: var(--bone-white); }
.btn:hover::before { transform: translateY(0); }
.btn:hover .btn-arrow { transform: translateX(5px); }
.btn:active { transform: scale(0.99); }

/* ============================================================
   PRELOADER
   ============================================================ */
.preloader {
  position: fixed;
  inset: 0;
  background: var(--oled-black);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  visibility: visible;
  transition: opacity 500ms var(--ease-rift),
              visibility 500ms;
  animation: preloaderFallback 0.5s ease forwards 3.0s;
}

.preloader.fade-out {
  opacity: 0;
  visibility: hidden;
}

.preloader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

@keyframes preloaderFallback {
  to {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
}

.preloader-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.preloader-rift-line {
  width: 1.5px;
  height: 0;
  background: var(--bone-white);
  box-shadow: 0 0 12px 1px rgba(242, 241, 238, 0.35);
  animation: drawLine 850ms var(--ease-rift) forwards;
}

.preloader-symbol {
  height: 40px;
  margin-top: var(--space-md);
  opacity: 0;
  transform: translateY(8px);
  animation: preloaderReveal 600ms var(--ease-rift) 500ms forwards;
}

.preloader-wordmark {
  height: 12px;
  margin-top: var(--space-sm);
  opacity: 0;
  transform: translateY(6px);
  animation: preloaderReveal 600ms var(--ease-rift) 800ms forwards;
}

.preloader-headline {
  font-family: var(--font-display);
  font-size: 9px;
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--fg-secondary);
  margin-top: var(--space-md);
  opacity: 0;
  animation: preloaderReveal 600ms var(--ease-rift) 1100ms forwards;
}

@keyframes drawLine {
  to { height: 100px; }
}

@keyframes preloaderReveal {
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .preloader {
    display: none;
  }
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 150;
  border-bottom: 1px solid transparent;
  transition: background var(--dur-med) var(--ease-rift),
              border-color var(--dur-med) var(--ease-rift),
              backdrop-filter var(--dur-med) var(--ease-rift);
}
.nav.scrolled {
  background: rgba(10, 10, 10, 0.72);
  backdrop-filter: blur(20px) saturate(0.8);
  -webkit-backdrop-filter: blur(20px) saturate(0.8);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 80px;
}
.brand-lockup { display: flex; align-items: center; gap: 16px; opacity: 0; transition: opacity var(--dur-slow) var(--ease-rift) 200ms; }
body.is-ready .brand-lockup { opacity: 1; }
.brand-symbol { height: 32px; width: auto; }
.brand-divider { width: 1px; height: 28px; background: var(--graphite); }
.brand-wordmark { height: 14px; width: auto; opacity: 0.96; }

.nav-links { display: flex; gap: 32px; }
.nav-links a {
  font-family: var(--font-display);
  font-size: 10px;
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--fg-2);
  transition: color var(--dur-fast) var(--ease-rift);
  padding: 6px 0;
  position: relative;
}
.nav-links a::after {
  content: ""; position: absolute; bottom: 0; left: 0;
  width: 0; height: 1px; background: var(--fg-1);
  transition: width var(--dur-med) var(--ease-rift);
}
.nav-links a:hover { color: var(--fg-1); }
.nav-links a:hover::after { width: 100%; }

.menu-btn {
  display: none; background: none; border: none; color: var(--fg-1);
  font-family: var(--font-display); font-size: 11px;
  letter-spacing: var(--track-label); text-transform: uppercase; cursor: pointer;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 750px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--oled-black);
}

.hero-video-wrapper {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: hidden;
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(1.95) contrast(0.97) saturate(0.9) url(#hero-clarity);
  object-position: center 40%;
  transform: scale(1.6); /* base crop \u2014 drift animation overrides while running; reduced-motion falls back here */
  transform-origin: center 42%;
  will-change: transform;
  /* Slow, inevitable breath — the rupture is alive, not a still */
  animation: heroDrift 28s var(--ease-soft) infinite alternate;
}
@keyframes heroDrift {
  0%   { transform: scale(1.58); }
  100% { transform: scale(1.66); }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    /* light side-wall vignette — keeps the fractured slate readable, only corners fall off */
    radial-gradient(ellipse 120% 92% at 50% 42%, transparent 56%, rgba(10,10,10,0.22) 82%, rgba(10,10,10,0.50) 100%),
    /* top scrim under the nav, then a strong lower bury that dissolves the hero into the Thesis chamber */
    linear-gradient(180deg, rgba(10,10,10,0.60) 0%, rgba(10,10,10,0.12) 18%, transparent 30%, transparent 46%, rgba(10,10,10,0.90) 60%, var(--oled-black) 74%, var(--oled-black) 100%);
}

.hero-container {
  position: relative;
  z-index: 3;
  width: 100%;
}

/* Monument Stack Layout */
.hero-monument {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}

/* Centered vertical rift line */
.hero-rift-line-vertical {
  position: absolute;
  left: 50%;
  top: 0;
  width: 1px;
  height: 0;
  background: linear-gradient(to bottom, transparent, var(--graphite) 12%, rgba(242,241,238,0.55) 50%, var(--graphite) 88%, transparent);
  transform: translateX(-50%);
  z-index: 2;
  opacity: 0.32;
  animation: drawHeroRift 1.8s var(--ease-rift) forwards;
}

@keyframes drawHeroRift {
  0% { height: 0; }
  100% { height: 100%; }
}

.hero-brand-reveal {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--space-xl);
  padding: var(--space-lg) var(--space-xl) var(--space-md);
  position: relative;
  opacity: 0;
  animation: fadeInRadial 1.3s var(--ease-rift) 0.3s forwards;
}
/* Soft atmospheric well — embeds the mark in depth with no visible box edge */
.hero-brand-reveal::before {
  content: "";
  position: absolute;
  left: 50%; top: 47%;
  width: 160%; height: 165%;
  transform: translate(-50%, -50%);
  background: radial-gradient(ellipse 44% 54% at 50% 50%, rgba(10,10,10,0.72) 0%, rgba(10,10,10,0.36) 46%, transparent 74%);
  z-index: -1;
  pointer-events: none;
}

@keyframes fadeInRadial {
  to { opacity: 1; }
}

.hero-cinematic-mark {
  height: clamp(240px, 31vh, 300px);
  width: auto;
  margin-bottom: var(--space-lg);
  /* layered glow: a tight warm core fused to a wide cool halo — monument, not sticker */
  filter:
    drop-shadow(0 0 24px rgba(244,228,206,0.24))
    drop-shadow(0 0 78px rgba(141,141,141,0.16));
  mix-blend-mode: screen;
  opacity: 0;
  transform: scale(0.86) translateY(24px);
  animation: emergeMark 1.6s var(--ease-rift) 0.35s forwards;
}

@keyframes emergeMark {
  0% {
    opacity: 0;
    transform: scale(0.86) translateY(24px);
    filter:
      drop-shadow(0 0 24px rgba(244,228,206,0.24))
      drop-shadow(0 0 78px rgba(141,141,141,0.16))
      blur(12px);
  }
  55% { opacity: 0.97; }
  100% {
    opacity: 0.95;
    transform: scale(1) translateY(0);
    filter:
      drop-shadow(0 0 24px rgba(244,228,206,0.24))
      drop-shadow(0 0 78px rgba(141,141,141,0.16))
      blur(0);
  }
}

.hero-wordmark {
  width: min(480px, 74vw);
  height: auto;
  opacity: 0;
  animation: lockWordmark 1.05s var(--ease-rift) 0.85s forwards;
}

@keyframes lockWordmark {
  0% {
    opacity: 0;
    letter-spacing: 0.22em;
    filter: blur(6px);
  }
  100% {
    opacity: 0.95;
    letter-spacing: normal;
    filter: blur(0);
  }
}

.hero-details {
  margin-top: var(--space-sm);
  text-align: center;
}

.hero-brandline {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--fg-secondary);
  margin-bottom: var(--space-lg); /* Spacer above CTA */
  opacity: 0;
  animation: fadeInBrandline 0.9s var(--ease-rift) 1.25s forwards;
}

@keyframes fadeInBrandline {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

.hero-ctas {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  align-items: center;
  opacity: 0;
  animation: fadeInCTA 0.9s var(--ease-rift) 1.65s forwards;
}

@keyframes fadeInCTA {
  0% { opacity: 0; transform: translateY(8px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* Restrained bottom hero rail */
.hero-bottom-rail {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  border-top: 1px solid rgba(242, 241, 238, 0.08);
  background: transparent;
  display: flex;
  align-items: center;
  z-index: 4;
  opacity: 0;
  animation: fadeInRail 1.1s var(--ease-rift) 2.0s forwards;
}

@keyframes fadeInRail {
  to { opacity: 1; }
}

.rail-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-secondary);
  width: 100%;
}

.scroll-cue {
  position: absolute;
  bottom: 80px; /* Shifted up slightly to clear the bottom rail */
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  color: var(--fg-tertiary);
  cursor: pointer;
  transition: color var(--dur-fast) var(--ease-rift);
  opacity: 0;
  animation: fadeInScrollCue 1.1s var(--ease-rift) 2.0s forwards;
}

@keyframes fadeInScrollCue {
  to { opacity: 1; }
}

.scroll-text {
  font-family: var(--font-display);
  font-size: 8.5px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 24px;
  background: var(--fg-tertiary);
  position: relative;
  overflow: hidden;
}

.scroll-line::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: var(--fg-primary);
  animation: lineSlide 2s infinite var(--ease-rift);
}

@keyframes monumentReveal {
  to { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes lineSlide {
  0% { transform: translateY(-100%); }
  5% { transform: translateY(-100%); }
  50%, 100% { transform: translateY(200%); }
}

/* ============================================================
   THESIS — EDITORIAL DECLARATION
   ============================================================ */
.thesis-section { padding: 196px 0 var(--space-giant); background: var(--oled-black); position: relative; }

/* Seam: the hero rift continues a short way into the chamber, then quietly
   dissolves — a continuation of the rupture, not a structural centerline. */
.thesis-rift-line-vertical {
  position: absolute; left: 50%; top: 0;
  width: 1px; height: 300px;
  transform: translateX(-50%);
  z-index: 1; pointer-events: none;
  background: linear-gradient(180deg,
    rgba(141,141,141,0.30) 0%,
    rgba(141,141,141,0.17) 34%,
    rgba(141,141,141,0.07) 66%,
    transparent 100%);
}

/* The hero headline lands here, on the rift axis — the bridge from the
   monument into the first chamber of the system. */
.thesis-transition-tagline {
  font-family: var(--font-sans);
  font-size: clamp(22px, 2.6vw, 34px);
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -0.012em;
  color: var(--fg-1);
  text-align: center;
  text-wrap: balance;
  max-width: 720px;
  margin: 0 auto var(--space-giant);
  position: relative; z-index: 2;
}
.thesis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  position: relative; z-index: 2;
  align-items: start;
}
/* aside: quiet editorial label column */
.thesis-aside {
  display: flex; flex-direction: column; align-items: flex-start;
  text-align: left;
  padding-top: 4px;
}
.thesis-mark {
  font-family: var(--font-mono);
  font-size: clamp(48px, 6vw, 96px);
  line-height: 0.9;
  color: var(--fg-4);
  font-weight: 400;
}
.thesis-aside .eyebrow { margin-top: var(--space-md); }
/* body sits to the RIGHT */
.thesis-body { padding-left: var(--space-xl); }
.thesis-lead {
  font-family: var(--font-sans);
  font-size: clamp(28px, 3.2vw, 50px);
  font-weight: 300;
  line-height: 1.16;
  letter-spacing: -0.018em;
  color: var(--fg-1);
  text-wrap: balance;
  margin-bottom: var(--space-lg);
}
.thesis-lead em { font-style: normal; color: var(--fg-2); }
.thesis-sub {
  font-size: var(--fs-body-lg);
  line-height: 1.7;
  color: var(--fg-2);
  max-width: 640px;
  font-weight: 400;
}

/* ============================================================
   PRINCIPLE — MANIFESTO
   ============================================================ */
.principle-section {
  background: var(--oled-black);
  border-top: 1px solid var(--rule);
  overflow: hidden;
  padding: 200px 0;
  position: relative;
}
.principle-watermark {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  height: 132%; width: auto;
  color: var(--bone-white);
  opacity: 0.022;
  pointer-events: none; z-index: 0;
}
.principle-inner { position: relative; z-index: 2; max-width: 1080px; }
.principle-quote {
  font-family: var(--font-sans);
  font-size: clamp(30px, 4.4vw, 58px);
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--fg-1);
  text-wrap: balance;
  margin-bottom: var(--space-lg);
}
.principle-quote .dim { color: var(--fg-3); }
.hl {
  position: relative; color: var(--fg-1); font-weight: 500;
  display: inline-block;
}
.hl::after {
  content: ""; position: absolute; left: 0; bottom: -0.12em;
  width: 100%; height: 1px;
  background: var(--bone-white); opacity: 0.85;
  transform: scaleX(0); transform-origin: left;
  transition: transform 800ms var(--ease-rift);
}
.principle-section.in .hl::after { transform: scaleX(1); }
.principle-section.in .hl:nth-of-type(2)::after { transition-delay: 180ms; }
.principle-section.in .hl:nth-of-type(3)::after { transition-delay: 360ms; }
.principle-sub {
  font-size: var(--fs-body-lg);
  color: var(--fg-2);
  max-width: 560px;
  line-height: 1.7;
}

/* ============================================================
   OPERATING MODEL — BLUEPRINT
   ============================================================ */
.opmodel-section { background: var(--charcoal); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.blueprint { margin-top: var(--space-md); }

.bp-axis-wrap { position: relative; width: 100%; height: 64px; }
.bp-axis { width: 100%; height: 100%; overflow: visible; }
.bp-axis .axis-line { stroke: var(--graphite); stroke-width: 1; stroke-dasharray: 2 7; }
.bp-axis .axis-cap { stroke: var(--graphite); stroke-width: 1; }
.bp-node-pt { fill: var(--charcoal); stroke: var(--graphite); stroke-width: 1.25; transition: all var(--dur-med) var(--ease-rift); }
.bp-node-pt.active { fill: var(--bone-white); stroke: var(--bone-white); }
#bp-pulse { fill: var(--fracture); filter: drop-shadow(0 0 6px rgba(244,228,206,0.6)); animation: signalFlow 6s linear infinite; }
@keyframes signalFlow {
  0% { transform: translateX(0); opacity: 0; }
  6% { opacity: 1; }
  94% { opacity: 1; }
  100% { transform: translateX(800px); opacity: 0; }
}

.bp-nodes {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  margin-top: -34px;
  position: relative; z-index: 5;
}
.bp-node {
  background: transparent; border: none; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 22px;
  padding-top: 0;
}
.bp-num {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: var(--track-mono);
  color: var(--fg-3); transition: color var(--dur-fast) var(--ease-rift);
}
.bp-name {
  font-family: var(--font-display); font-size: 12px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--fg-2);
  transition: color var(--dur-fast) var(--ease-rift);
  position: relative; padding-bottom: 6px;
}
.bp-node:hover .bp-name, .bp-node.active .bp-name,
.bp-node:hover .bp-num, .bp-node.active .bp-num { color: var(--fg-1); }

.bp-panel {
  margin-top: var(--space-xl);
  background: var(--oled-black);
  border: 1px solid var(--rule);
  padding: var(--space-xl);
  position: relative;
  min-height: 200px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}
.bp-panel-grain {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  opacity: 0.04; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n2'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n2)'/%3E%3C/svg%3E");
}
.bp-panes { position: relative; z-index: 2; min-height: 130px; }
.bp-pane {
  position: absolute; inset: 0;
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity var(--dur-med) var(--ease-rift), transform var(--dur-med) var(--ease-rift), visibility var(--dur-med);
}
.bp-pane.active { opacity: 1; visibility: visible; transform: translateY(0); position: relative; }
.bp-pane-step {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: var(--track-mono);
  color: var(--fg-3); text-transform: uppercase; margin-bottom: var(--space-md);
}
.bp-pane-title { font-family: var(--font-sans); font-size: clamp(24px, 2.4vw, 32px); font-weight: 500; color: var(--fg-1); margin-bottom: var(--space-sm); letter-spacing: -0.01em; }
.bp-pane-text { font-size: var(--fs-body-lg); color: var(--fg-2); line-height: 1.65; max-width: 460px; }
.bp-meta { position: relative; z-index: 2; align-self: stretch; display: flex; flex-direction: column; justify-content: space-between; border-left: 1px solid var(--rule); padding-left: var(--space-xl); }
.bp-meta-row { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--rule); font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.04em; }
.bp-meta-row span:first-child { color: var(--fg-3); text-transform: uppercase; letter-spacing: var(--track-mono); }
.bp-meta-row span:last-child { color: var(--fg-1); }

/* ============================================================
   SYSTEMS — ARCHITECTURAL PLATES
   ============================================================ */
.systems-section { background: var(--oled-black); border-top: 1px solid var(--rule); }
.plates {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--rule-strong); border: 1px solid var(--rule-strong);
}
.plate {
  background: var(--oled-black);
  position: relative; overflow: hidden;
  min-height: 460px;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: var(--space-xl);
  box-shadow: inset 0 1px 0 rgba(242,241,238,0.035);
  transition: background var(--dur-med) var(--ease-rift);
}
.plate::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(42,45,52,0.5) 0%, transparent 55%),
    var(--charcoal);
  opacity: 0; transition: opacity var(--dur-med) var(--ease-rift);
}
.plate-grain {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  opacity: 0.05; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n3'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.7' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n3)'/%3E%3C/svg%3E");
}
.plate-num {
  position: absolute; top: var(--space-xl); left: var(--space-xl);
  font-family: var(--font-mono); font-size: clamp(40px, 4vw, 64px); line-height: 1;
  color: var(--fg-4); z-index: 2; font-weight: 400;
  transform-origin: left top;
  transition: color var(--dur-med) var(--ease-rift), transform var(--dur-med) var(--ease-rift);
}
.plate-body { position: relative; z-index: 2; transition: transform var(--dur-med) var(--ease-rift); }
.plate-title { font-family: var(--font-sans); font-size: clamp(22px, 2vw, 27px); font-weight: 500; color: var(--fg-1); margin-bottom: var(--space-sm); letter-spacing: -0.01em; }
.plate-desc { font-size: var(--fs-body); line-height: 1.66; color: var(--fg-2); max-width: 320px; }
.plate-edge {
  position: absolute; bottom: 0; left: 0; width: 100%; height: 2px;
  background: var(--bone-white); transform: scaleX(0); transform-origin: left;
  transition: transform var(--dur-med) var(--ease-rift); z-index: 3;
}
.plate:hover::before { opacity: 1; }
.plate:hover .plate-edge { transform: scaleX(1); }
.plate:hover .plate-num { color: var(--fg-2); transform: scale(1.04); }
.plate:hover .plate-body { transform: translateY(-3px); }

/* ============================================================
   RESEARCH INDEX / ATLAS
   ============================================================ */
.research-section { background: var(--oled-black); border-top: 1px solid var(--rule); }
.atlas {
  border-top: 1px solid var(--graphite);
}
.atlas-row {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--rule);
  transition: padding-left var(--dur-med) var(--ease-rift), background var(--dur-fast) var(--ease-rift);
  position: relative;
}
.atlas-row::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 1px;
  background: var(--bone-white); transform: scaleY(0); transform-origin: top;
  transition: transform var(--dur-med) var(--ease-rift);
}
.atlas-coord { font-family: var(--font-mono); font-size: 11px; letter-spacing: var(--track-mono); color: var(--fg-3); }
.atlas-label { font-family: var(--font-sans); font-size: clamp(17px, 1.7vw, 22px); font-weight: 400; color: var(--fg-1); letter-spacing: -0.01em; }
.atlas-arrow { font-family: var(--font-mono); font-size: 14px; color: var(--fg-3); opacity: 0; transform: translateX(-8px); transition: all var(--dur-med) var(--ease-rift); }
.atlas-row:hover { padding-left: 20px; }
.atlas-row:hover::before { transform: scaleY(1); }
.atlas-row:hover .atlas-coord, .atlas-row:hover .atlas-label { color: var(--fg-1); }
.atlas-row:hover .atlas-arrow { opacity: 1; transform: translateX(0); color: var(--fg-1); }

/* ============================================================
   CONTROLLED RIFT — ARCHITECTURAL RUPTURE
   ============================================================ */
.rift-break {
  position: relative; min-height: 78vh;
  display: flex; align-items: center;
  overflow: hidden; background: var(--oled-black);
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
}
.rift-plates { position: absolute; inset: -2px; display: flex; z-index: 1; }
.rift-plate {
  flex: 1; position: relative;
  background: linear-gradient(100deg, #14161A 0%, #0A0A0A 100%);
}
.rift-plate.left  { border-right: 1px solid rgba(0,0,0,0.7); clip-path: polygon(0 0, 100% 0, calc(100% - 60px) 100%, 0 100%); background: linear-gradient(90deg, #14161A 0%, #0A0A0A 88%, #0A0A0A 100%); }
.rift-plate.right { clip-path: polygon(60px 0, 100% 0, 100% 100%, 0 100%); margin-left: -1px; background: linear-gradient(90deg, #0A0A0A 0%, #0A0A0A 12%, #14161A 100%); }
.rift-plate-grain {
  position: absolute; inset: 0; opacity: 0.06; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n4'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.6' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n4)'/%3E%3C/svg%3E");
}
/* Central slit — crisp architectural void of bone-white light, minimal glow */
.rift-slit {
  position: absolute; left: 50%; top: 0; bottom: 0; width: 1px;
  transform: translateX(-50%); z-index: 2; pointer-events: none;
  background: linear-gradient(180deg, transparent 5%, rgba(244,228,206,0.32) 30%, var(--fracture) 50%, rgba(244,228,206,0.32) 70%, transparent 95%);
  box-shadow: 0 0 28px 1px rgba(244,228,206,0.10);
  animation: slitBreathe 7s var(--ease-soft) infinite;
}
@keyframes slitBreathe {
  0%, 100% { opacity: 0.78; }
  50% { opacity: 1; }
}
.rift-break-content { position: relative; z-index: 3; text-align: center; max-width: 860px; margin: 0 auto; }
.rift-break-title {
  font-family: var(--font-sans); font-weight: 300;
  font-size: clamp(26px, 3.4vw, 46px); line-height: 1.2;
  color: var(--fg-1); margin-bottom: var(--space-md);
  text-wrap: balance; letter-spacing: -0.015em;
}
.rift-break-desc { font-size: var(--fs-body-lg); color: var(--fg-2); max-width: 520px; margin: 0 auto; line-height: 1.7; }

/* ============================================================
   METHODOLOGY — OPERATING PROTOCOL
   ============================================================ */
.method-section { background: var(--oled-black); border-top: 1px solid var(--rule); }
.method-track { position: relative; border-top: 1px solid var(--graphite); margin-top: var(--space-md); }
.method-progress {
  position: absolute; top: -1px; left: 0; height: 1px; width: 0%;
  background: var(--bone-white); z-index: 2;
}
.method-steps { display: grid; grid-template-columns: repeat(5, 1fr); }
.method-step {
  padding: var(--space-lg) var(--space-md) var(--space-lg) 0;
  border-right: 1px solid var(--rule);
  position: relative;
}
.method-step:last-child { border-right: none; }
.method-step::before {
  content: ""; position: absolute; top: -1px; left: 0; width: 7px; height: 7px;
  background: var(--graphite); transform: translateY(-50%) rotate(45deg);
  transition: background var(--dur-med) var(--ease-rift);
}
.method-step.lit::before { background: var(--bone-white); }
.method-num { font-family: var(--font-mono); font-size: 11px; letter-spacing: var(--track-mono); color: var(--fg-3); display: block; margin-bottom: var(--space-md); }
.method-title { font-family: var(--font-sans); font-size: clamp(19px, 1.6vw, 23px); font-weight: 500; color: var(--fg-1); margin-bottom: var(--space-sm); letter-spacing: -0.01em; }
.method-desc { font-size: var(--fs-body); line-height: 1.6; color: var(--fg-2); max-width: 200px; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact-section {
  background: var(--charcoal); text-align: center;
  border-top: 1px solid var(--rule);
  padding: 200px 0;
}
.contact-inner { max-width: 760px; margin: 0 auto; }
.contact-title {
  font-family: var(--font-sans); font-weight: 300;
  font-size: clamp(40px, 6vw, 84px); line-height: 1.02;
  letter-spacing: -0.03em; color: var(--fg-1);
  margin: var(--space-md) 0 var(--space-lg);
}
.contact-desc { font-size: var(--fs-body-lg); color: var(--fg-2); line-height: 1.7; margin: 0 auto var(--space-xl); max-width: 540px; }
.contact-links { display: flex; flex-direction: column; align-items: center; gap: 10px; margin-bottom: var(--space-xl); }
.contact-link {
  font-family: var(--font-display); font-size: clamp(16px, 1.5vw, 19px);
  letter-spacing: 0.08em; color: var(--fg-1);
  position: relative; padding-bottom: 4px;
}
.contact-link::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px; background: var(--fg-3); transform: scaleX(0); transform-origin: center; transition: transform var(--dur-med) var(--ease-rift); }
.contact-link:hover::after { transform: scaleX(1); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--oled-black); border-top: 1px solid var(--rule); padding: var(--space-xl) 0 var(--space-lg); }
.footer-main { display: flex; justify-content: space-between; align-items: flex-end; padding-bottom: var(--space-xl); gap: var(--space-lg); }
.footer-brand { display: flex; flex-direction: column; gap: 14px; }
.footer-wm { height: 14px; width: auto; opacity: 0.95; }
.footer-positioning { font-size: var(--fs-small); color: var(--fg-2); }
.footer-descriptor { font-family: var(--font-display); font-size: 9.5px; letter-spacing: var(--track-label); text-transform: uppercase; color: var(--fg-2); text-align: right; max-width: 320px; line-height: 1.8; }
.footer-bottom { border-top: 1px solid var(--rule); padding-top: var(--space-md); display: flex; justify-content: space-between; }
.footer-copy, .footer-loc { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.06em; color: var(--fg-3); }

/* ============================================================
   REVEAL
   ============================================================ */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity var(--dur-slow) var(--ease-rift), transform var(--dur-slow) var(--ease-rift); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: 120ms; }
.reveal[data-delay="2"] { transition-delay: 240ms; }

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .preloader { display: none !important; }
  .hero-cinematic-mark, .hero-wordmark, .hero-brand-reveal, .hero-brandline,
  .hero-ctas, .hero-bottom-rail, .scroll-cue,
  .brand-lockup { opacity: 1 !important; transform: none !important; animation: none !important; filter: none !important; letter-spacing: normal !important; }
  .hero-rift-line-vertical { height: 100% !important; opacity: 0.4 !important; animation: none !important; }
  .hero-cinematic-mark { opacity: 0.94 !important; }
  .hero-wordmark { opacity: 0.96 !important; }
  .hero-video { opacity: 1 !important; }
  .rift-slit, .scroll-line::before { animation: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .hl::after { transform: scaleX(1) !important; transition: none !important; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  :root { --gutter: 32px; --space-giant: 120px; }
  .bp-panel { grid-template-columns: 1fr; gap: var(--space-lg); }
  .bp-meta { border-left: none; padding-left: 0; border-top: 1px solid var(--rule); padding-top: var(--space-lg); }
  .method-steps { grid-template-columns: 1fr 1fr 1fr; }
  .method-step { border-bottom: 1px solid var(--rule); padding: var(--space-md) var(--space-md) var(--space-md) 0; }
  .method-desc { max-width: none; }
}

@media (max-width: 760px) {
  :root { --gutter: 22px; --space-giant: 96px; }

  .menu-btn { display: block; }
  .nav-links {
    display: none; position: absolute; top: 80px; left: 0; right: 0;
    background: rgba(10,10,10,0.97); flex-direction: column; align-items: flex-start;
    gap: var(--space-md); padding: var(--space-lg) var(--gutter);
    border-bottom: 1px solid var(--rule);
    backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 13px; }

  .hero-cinematic-mark { height: clamp(150px, 27vh, 224px); margin-bottom: var(--space-md); }
  .hero-video { transform: scale(1.95); animation: none; }

  .thesis-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
  .thesis-mark { font-size: clamp(48px, 18vw, 80px); }
  /* On mobile the rift line retreats to the content's left edge */
  .thesis-rift-line-vertical { left: 0; top: -40px; height: 160px; }
  .thesis-transition-tagline { text-align: left; margin-bottom: var(--space-xl); }
  .thesis-aside { align-items: flex-start; text-align: left; padding-left: var(--space-md); }
  .thesis-body { padding-left: var(--space-md); }

  .bp-nodes { grid-template-columns: 1fr; margin-top: 0; gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
  .bp-axis-wrap { display: none; }
  .bp-node { flex-direction: row; justify-content: space-between; background: var(--oled-black); padding: var(--space-md); align-items: center; }
  .bp-name { padding-bottom: 0; }
  .bp-panel { padding: var(--space-lg); }

  .plates { grid-template-columns: 1fr; }
  .plate { min-height: 320px; padding: var(--space-lg); }
  .plate-num { top: var(--space-lg); left: var(--space-lg); }

  .atlas-row { grid-template-columns: 48px 1fr auto; padding: var(--space-md) 0; }

  .method-steps { grid-template-columns: 1fr; }
  .method-step { border-right: none; }
  .method-desc { max-width: none; }

  .footer-main { flex-direction: column; align-items: flex-start; gap: var(--space-lg); }
  .footer-descriptor { text-align: left; }
  .footer-bottom { flex-direction: column; gap: 8px; }

  .rift-plate.left { clip-path: polygon(0 0, 100% 0, calc(100% - 28px) 100%, 0 100%); }
  .rift-plate.right { clip-path: polygon(28px 0, 100% 0, 100% 100%, 0 100%); }
}

.muted-word {
  opacity: 0.45;
}

/* ============================================================
   POINTER EVENTS RULES FOR INTERACTION SAFETY
   ============================================================ */
.hero-video-wrapper,
.hero-overlay,
.hero-rift-line-vertical,
.thesis-rift-line-vertical,
.rift-plates,
.rift-slit,
.scroll-progress {
  pointer-events: none;
}

.nav,
.hero-container,
.hero-ctas,
.scroll-cue,
.btn,
.bp-node,
.menu-btn,
.contact-link {
  pointer-events: auto;
}


/* 2026-10-21 research-site conversion: accessible heading and reused-component spacing */
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
a.atlas-row { text-decoration: none; color: inherit; }
/* Four areas of inquiry on the existing plate design: four across on wide screens, two on tablets, one on phones; keep the numeral's space clear */
.plates.plates-four { grid-template-columns: repeat(4, 1fr); }
#research .plate { padding-top: calc(var(--space-xl) + 96px); min-height: 400px; }
@media (max-width: 1100px) { .plates.plates-four { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .plates.plates-four { grid-template-columns: 1fr; } }
/* Keyboard focus, on brand: thin bone outline on every link and button (pointer clicks unaffected) */
a:focus-visible, button:focus-visible { outline: 1px solid var(--bone-white); outline-offset: 4px; }