/* ==========================================================================
   FIND THE CODE — OFFICIAL LANDING PAGE (VERSION 2)
   Typography: Science Gothic (Display) + IBM Plex Sans (Body) + IBM Plex Mono
   ========================================================================== */

:root {
  /* Color Palette — Restrained Obsidian, Charcoal, Warm Off-White & Indicator Amber */
  --bg: #080807;
  --bg-deep: #050504;
  --surface: #11110f;
  --surface-elevated: #161613;
  --surface-panel: #1b1a17;
  --surface-key: #21201c;
  --surface-key-hover: #2a2822;

  --text: #ece8df;
  --text-secondary: #c5c0b4;
  --muted: #8e897d;
  --dim: #5a564c;

  /* Single Primary Accent — Indicator Amber */
  --accent: #c8a45d;
  --accent-bright: #dfc07f;
  --accent-dim: #7a6336;
  --accent-soft: rgba(200, 164, 93, 0.1);

  /* Hardware Status Indicators */
  --status-locked: #a84a3e;
  --status-unlocked: #689d6a;

  /* Borders & Hairlines */
  --border: rgba(236, 232, 223, 0.08);
  --border-mid: rgba(236, 232, 223, 0.16);
  --border-accent: rgba(200, 164, 93, 0.42);

  /* Typography — Science Gothic Primary Identity */
  --font-display: 'Science Gothic', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'Cascadia Code', Consolas, monospace;

  /* Fluid Type Scale */
  --text-xs: clamp(0.7rem, 0.66rem + 0.15vw, 0.76rem);
  --text-sm: clamp(0.8rem, 0.76rem + 0.2vw, 0.9rem);
  --text-base: clamp(0.98rem, 0.93rem + 0.25vw, 1.08rem);
  --text-lg: clamp(1.15rem, 1.05rem + 0.45vw, 1.4rem);
  --text-xl: clamp(1.4rem, 1.22rem + 0.75vw, 1.9rem);
  --text-2xl: clamp(2.1rem, 1.65rem + 2vw, 3.4rem);
  --text-hero: clamp(2.65rem, 1.4rem + 6.6vw, 7.6rem);

  /* Generous Spacing System */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2.25rem;
  --space-7: 3.5rem;
  --space-8: 5rem;
  --space-9: 7rem;
  --space-10: 10rem;

  /* Layout & Geometry */
  --container-max: 1360px;
  --container-pad: clamp(1.5rem, 4.5vw, 4rem);
  --header-height: 72px;
  --radius-xs: 2px;
  --radius-sm: 3px;

  /* Motion Curves */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-tactile: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 180ms;
  --dur-base: 280ms;
}

/* ==========================================================================
   RESET & BASE
   ========================================================================== */

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

html {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

body {
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: clip;
  position: relative;
}

/* Hide native cursor on fine pointer devices when custom cursor is active */
@media (hover: hover) and (pointer: fine) {

  body.has-custom-cursor,
  body.has-custom-cursor a,
  body.has-custom-cursor button,
  body.has-custom-cursor [role="button"],
  body.has-custom-cursor [role="tab"] {
    cursor: none;
  }
}

img,
svg,
video {
  display: block;
  max-width: 100%;
  height: auto;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
}

button {
  cursor: pointer;
}

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

ul,
ol {
  list-style: none;
}

code,
pre {
  font-family: var(--font-mono);
}

::selection {
  background-color: var(--accent);
  color: var(--bg);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

/* Skip Link */
.skip-link {
  position: fixed;
  top: -100px;
  left: var(--space-4);
  z-index: 9999;
  background-color: var(--accent);
  color: var(--bg);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-xs);
  transition: top var(--dur-fast) var(--ease-out);
}

.skip-link:focus {
  top: var(--space-3);
}

/* ==========================================================================
   CUSTOM CURSOR
   ========================================================================== */

.custom-cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  pointer-events: none;
  z-index: 9998;
  opacity: 0;
  transition: opacity 0.3s var(--ease-out);
}

body.has-custom-cursor .custom-cursor.is-visible {
  opacity: 1;
}

.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 6px;
  height: 6px;
  margin-left: -3px;
  margin-top: -3px;
  border-radius: 50%;
  background-color: var(--accent);
  will-change: transform;
  transition: transform 0.2s var(--ease-out), background-color 0.2s var(--ease-out);
}

.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  width: 34px;
  height: 34px;
  margin-left: -17px;
  margin-top: -17px;
  border-radius: 50%;
  border: 1px solid rgba(200, 164, 93, 0.48);
  background-color: rgba(200, 164, 93, 0.02);
  will-change: transform;
  transition:
    width 0.28s var(--ease-out),
    height 0.28s var(--ease-out),
    margin 0.28s var(--ease-out),
    border-color 0.28s var(--ease-out),
    background-color 0.28s var(--ease-out);
}

.custom-cursor.is-hover .cursor-dot {
  transform: scale(0.6);
  background-color: var(--text);
}

.custom-cursor.is-hover .cursor-ring {
  width: 52px;
  height: 52px;
  margin-left: -26px;
  margin-top: -26px;
  border-color: var(--accent);
  background-color: rgba(200, 164, 93, 0.09);
}

.custom-cursor.is-pressed .cursor-ring {
  width: 26px;
  height: 26px;
  margin-left: -13px;
  margin-top: -13px;
  border-color: var(--text);
}

@media (hover: none),
(pointer: coarse) {
  .custom-cursor {
    display: none !important;
  }
}

/* ==========================================================================
   TYPOGRAPHY & LAYOUT UTILITIES
   ========================================================================== */

.mono-inline {
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--accent);
  padding: 0.05em 0.3em;
}

.accent-text {
  color: var(--accent);
}

.muted-headline {
  color: var(--muted);
  font-weight: 500;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  position: relative;
  padding-block: var(--space-10);
  contain: layout style;
}

/* ==========================================================================
   AMBIENT GRAIN & CINEMATIC GSAP LOADING SCREEN
   ========================================================================== */

.ambient-grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 90;
  opacity: 0.032;
  background-image: radial-gradient(rgba(236, 232, 223, 0.7) 1px, transparent 0);
  background-size: 3px 3px;
  transform: translate3d(0, 0, 0);
  backface-visibility: hidden;
  contain: strict;
}

.room-loader {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  overflow: hidden;
  pointer-events: none;
  perspective: 1200px;
}

.loader-curtain {
  position: absolute;
  inset: 0;
  background-color: var(--bg-deep);
  will-change: clip-path, opacity;
}

.loader-bg-texture {
  position: absolute;
  inset: 0;
  opacity: 0;
  background:
    radial-gradient(circle at 50% 45%, rgba(200, 164, 93, 0.11) 0%, transparent 62%),
    linear-gradient(to right, rgba(236, 232, 223, 0.02) 1px, transparent 1px) 0 0 / 64px 64px,
    linear-gradient(to bottom, rgba(236, 232, 223, 0.02) 1px, transparent 1px) 0 0 / 64px 64px;
  pointer-events: none;
  will-change: opacity, transform;
}

.loader-stage {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  transform-style: preserve-3d;
}

.splash-title {
  width: fit-content;
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  color: var(--text);
  text-shadow: 0 18px 44px rgba(0, 0, 0, 0.78);
  transform-origin: left top;
  will-change: transform, opacity;
}

.splash-line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.05em;
}

.splash-line-inner {
  display: inline-block;
  will-change: transform, opacity, filter;
}

/* ==========================================================================
   BUTTONS & TACTILE CONTROLS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 1rem 1.65rem;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-mid);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  transition:
    transform var(--dur-fast) var(--ease-tactile),
    border-color var(--dur-base) var(--ease-out),
    background-color var(--dur-base) var(--ease-out),
    color var(--dur-base) var(--ease-out);
  user-select: none;
}

.btn::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent);
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform var(--dur-base) var(--ease-out);
}

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

.btn:hover::after {
  transform: scaleX(1);
  transform-origin: left center;
}

.btn:active {
  transform: scale(0.97) translateY(0);
}

.btn-arrow {
  display: inline-block;
  transition: transform var(--dur-fast) var(--ease-out);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

.btn-primary {
  background-color: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.btn-primary:hover {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}

.btn-secondary {
  background-color: rgba(17, 17, 15, 0.78);
  color: var(--text);
  border-color: var(--border-mid);
}

.btn-secondary:hover {
  border-color: var(--accent);
  background-color: var(--surface-panel);
}

.btn-header {
  padding: 0.54rem 0.95rem;
  font-size: clamp(0.66rem, 0.58rem + 0.12vw, 0.74rem);
  letter-spacing: 0.13em;
  background-color: transparent;
  border-color: var(--border-mid);
  flex-shrink: 0;
  white-space: nowrap;
}

.btn-header:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-sm {
  padding: 0.7rem 1.1rem;
}

.btn-lg {
  padding: 1.15rem 2.1rem;
  font-size: var(--text-sm);
}

.btn-full {
  width: 100%;
}

.play-indicator {
  width: 0;
  height: 0;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 7px solid var(--accent);
  display: inline-block;
  will-change: transform;
  transition:
    transform var(--dur-fast) var(--ease-out),
    border-left-color var(--dur-fast) var(--ease-out);
}

[data-open-modal="trailer-modal"]:hover .play-indicator {
  transform: translateX(3px) scale(1.08);
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: rgba(8, 8, 7, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  will-change: transform, opacity;
  transition: background-color var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}

.site-header.is-scrolled {
  background-color: rgba(8, 8, 7, 0.94);
  border-bottom-color: var(--border);
}

.header-container {
  max-width: var(--container-max);
  height: 100%;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 3vw, 3.25rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(0.75rem, 1.8vw, 2rem);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(0.9rem, 0.78rem + 0.22vw, 1.04rem);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--text);
  transition: opacity var(--dur-fast) var(--ease-out);
}

.brand-mark:hover {
  opacity: 0.85;
}

.primary-nav {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1 1 auto;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: nowrap;
  gap: clamp(0.05rem, 0.35vw, 0.35rem);
  height: 100%;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  height: var(--header-height);
  padding-inline: clamp(0.42rem, 0.62vw, 0.76rem);
  font-family: var(--font-display);
  font-size: clamp(0.68rem, 0.58rem + 0.14vw, 0.76rem);
  font-weight: 500;
  letter-spacing: clamp(0.09em, 0.05em + 0.05vw, 0.14em);
  white-space: nowrap;
  flex-shrink: 0;
  color: var(--muted);
  transition:
    color var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out),
    opacity var(--dur-fast) var(--ease-out);
}

.nav-link:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.nav-link.is-active {
  color: var(--text);
}

/* Navigation Dropdowns */
.nav-dropdown {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: transparent;
  border: none;
  cursor: pointer;
}

.dropdown-chevron {
  transition: transform var(--dur-fast) var(--ease-out);
  color: var(--muted);
  flex-shrink: 0;
}

.nav-dropdown:hover .dropdown-chevron,
.nav-dropdown.is-open .dropdown-chevron,
.nav-dropdown:focus-within .dropdown-chevron {
  transform: rotate(180deg);
  color: var(--accent);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% - 6px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 250px;
  background: rgba(17, 17, 15, 0.96);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-mid);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.7), 0 0 20px rgba(200, 164, 93, 0.08);
  border-radius: var(--radius-xs);
  padding: 0.45rem;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out),
    visibility var(--dur-fast) var(--ease-out);
  z-index: 100;
}

/* Hover bridge */
.nav-dropdown-menu::before {
  content: "";
  position: absolute;
  top: -12px;
  left: 0;
  right: 0;
  height: 14px;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown.is-open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.dropdown-menu-inner {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.dropdown-item.nav-link {
  display: flex !important;
  align-items: flex-start;
  height: auto !important;
  padding: 0.65rem 0.85rem !important;
  border-radius: var(--radius-xs);
  border: 1px solid transparent;
  text-decoration: none;
  background: transparent;
  white-space: normal;
  text-align: left;
  transform: none !important;
  transition:
    background-color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
}

.dropdown-item.nav-link:hover,
.dropdown-item.nav-link:focus-visible {
  background-color: var(--surface-elevated);
  border-color: rgba(200, 164, 93, 0.28);
  transform: translateX(3px) !important;
  color: var(--text);
}

.dropdown-item.nav-link.is-active {
  background-color: rgba(200, 164, 93, 0.1);
  border-color: var(--border-accent);
}

.dropdown-item.nav-link.is-active .dropdown-item-title {
  color: var(--accent);
}

.dropdown-item-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dropdown-item-title {
  font-family: var(--font-display);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text);
  line-height: 1.25;
}

.dropdown-item-desc {
  font-family: var(--font-sans);
  font-size: 0.69rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  line-height: 1.3;
}

/* Nav Download Link */
.nav-link-download {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent);
}

.nav-link-download:hover {
  color: var(--accent-bright);
}

.nav-win-icon {
  flex-shrink: 0;
  fill: currentColor;
  transition: transform var(--dur-fast) var(--ease-out);
}

.nav-link-download:hover .nav-win-icon {
  transform: scale(1.15);
}

.mobile-nav-download-link {
  border-color: rgba(200, 164, 93, 0.4) !important;
  color: var(--accent-bright) !important;
  background-color: rgba(200, 164, 93, 0.06) !important;
  gap: 0.4rem;
}

.btn-hero-download {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-active-indicator {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  width: 0;
  background-color: var(--accent);
  pointer-events: none;
  opacity: 0;
  will-change: transform, width, opacity;
  transition: opacity var(--dur-fast) var(--ease-out);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: clamp(0.5rem, 1vw, 0.85rem);
  flex-shrink: 0;
  white-space: nowrap;
}

.audio-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.78rem;
  border: 1px solid var(--border);
  background-color: transparent;
  border-radius: var(--radius-xs);
  color: var(--muted);
  flex-shrink: 0;
  white-space: nowrap;
  transition: border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.audio-label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.audio-toggle-btn:hover {
  border-color: var(--border-mid);
  color: var(--text);
}

.audio-toggle-btn[aria-pressed="true"] {
  border-color: var(--border-accent);
  color: var(--accent);
}

.audio-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--dim);
  flex-shrink: 0;
  transition: background-color var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);
}

.audio-toggle-btn[aria-pressed="true"] .audio-dot {
  background-color: var(--accent);
  box-shadow: 0 0 6px var(--accent);
}

.mobile-menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-mid);
  background-color: var(--surface);
  border-radius: var(--radius-xs);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.hamburger-line {
  width: 18px;
  height: 1.5px;
  background-color: var(--text);
  transition: transform var(--dur-base) var(--ease-out);
}

.mobile-menu-toggle[aria-expanded="true"] .line-1 {
  transform: translateY(3.25px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] .line-2 {
  transform: translateY(-3.25px) rotate(-45deg);
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--surface);
  border-bottom: 1px solid var(--border-mid);
  padding: var(--space-5) var(--container-pad);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.8);
}

.mobile-nav-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border);
  background-color: var(--bg);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
}

.mobile-nav-link:hover,
.mobile-nav-link:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

/* ==========================================================================
   ASSET CONTAINER & GRACEFUL FALLBACK SYSTEM
   ========================================================================== */

[data-asset-container] {
  position: relative;
  background-color: var(--surface);
  overflow: hidden;
}

[data-asset-container] img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  backface-visibility: hidden;
  transform: translateZ(0);
}

.asset-fallback-card {
  display: none;
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to right, rgba(236, 232, 223, 0.03) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(to bottom, rgba(236, 232, 223, 0.03) 1px, transparent 1px) 0 0 / 32px 32px,
    var(--surface);
  border: 1px solid var(--border-mid);
  padding: var(--space-5);
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  gap: var(--space-2);
  color: var(--muted);
}

[data-asset-container].is-fallback img {
  display: none;
}

[data-asset-container].is-fallback .asset-fallback-card {
  display: flex;
}

/* ==========================================================================
   HERO SECTION — THE OPENING SHOT
   ========================================================================== */

.hero-section {
  --hero-light-x: 60%;
  --hero-light-y: 38%;
  position: relative;
  min-height: 100vh;
  padding-top: calc(var(--header-height) + clamp(1.75rem, 4.5vh, var(--space-8)));
  padding-bottom: clamp(1.5rem, 3.5vh, var(--space-7));
  display: flex;
  align-items: stretch;
  overflow: hidden;
  perspective: 1200px;
}

.hero-environment {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  transform-style: preserve-3d;
  will-change: clip-path, transform;
}

.hero-media-frame {
  width: 100%;
  height: 112%;
  margin-top: -6%;
  transform-style: preserve-3d;
}

.hero-bg-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  opacity: 0.68;
  transform: scale(1.08);
  will-change: transform, opacity;
}

.hero-room-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at var(--hero-light-x, 60%) var(--hero-light-y, 38%), rgba(200, 164, 93, 0.11) 0%, transparent 54%),
    linear-gradient(90deg, rgba(8, 8, 7, 0.93) 0%, rgba(8, 8, 7, 0.68) 52%, rgba(8, 8, 7, 0.38) 100%),
    linear-gradient(180deg, rgba(8, 8, 7, 0.72) 0%, transparent 28%, transparent 68%, var(--bg) 100%);
  pointer-events: none;
}

.light-cone {
  position: absolute;
  top: -12%;
  left: 46%;
  width: 42%;
  height: 105%;
  background: conic-gradient(from 168deg at 50% 0%, transparent 0deg, rgba(200, 164, 93, 0.075) 16deg, transparent 34deg);
  pointer-events: none;
  will-change: transform, opacity;
}

.hero-container {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: clamp(1.75rem, 4.5vh, var(--space-8));
  transform-style: preserve-3d;
}

.hero-composition {
  margin-block: auto;
  max-width: 920px;
  transform-style: preserve-3d;
}

.hero-title {
  width: fit-content;
  max-width: 100%;
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  text-shadow: 0 18px 44px rgba(0, 0, 0, 0.78);
  margin-bottom: clamp(1.25rem, 3vh, var(--space-6));
  transform-style: preserve-3d;
  will-change: transform;
}

.reveal-line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.06em;
}

.reveal-line.is-settled {
  overflow: visible;
}

.reveal-line-inner {
  display: inline-block;
  will-change: transform, opacity;
}

.hero-copy-block {
  max-width: 580px;
}

.hero-lead {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  line-height: 1.28;
  color: var(--text);
  margin-bottom: var(--space-4);
}

.hero-subcopy {
  font-size: var(--text-base);
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: clamp(1.25rem, 3vh, var(--space-6));
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
}

.hero-bottom-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border);
}

.hero-loop-statement {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.loop-arrow {
  color: var(--accent);
  margin-inline: 0.35rem;
}

.scroll-prompt {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color var(--dur-fast) var(--ease-out);
}

.scroll-prompt:hover {
  color: var(--text);
}

.scroll-line {
  width: 42px;
  height: 1px;
  background-color: var(--accent);
  display: inline-block;
}

/* ==========================================================================
   EDITORIAL SECTION HEADERS
   ========================================================================== */

.editorial-header {
  max-width: 820px;
  margin-bottom: var(--space-8);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin-bottom: var(--space-5);
}

.section-intro {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 62ch;
  line-height: 1.65;
}

/* ==========================================================================
   SECTION A: THE CORE LOOP
   ========================================================================== */

.loop-section {
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
}

.progression-board {
  position: relative;
  padding-top: var(--space-6);
}

.progression-line-track {
  width: 100%;
  height: 1px;
  background-color: var(--border-mid);
  margin-bottom: var(--space-7);
  position: relative;
  overflow: hidden;
}

.progression-line-fill {
  width: 100%;
  height: 100%;
  background-color: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  will-change: transform;
}

.loop-steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.loop-step-item {
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: border-color var(--dur-base) var(--ease-out);
}

.loop-step-item:hover {
  border-top-color: var(--accent);
}

.step-index-display {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--accent);
}

.step-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: 1.2;
}

.step-desc {
  font-size: var(--text-base);
  color: var(--muted);
  line-height: 1.65;
}

/* ==========================================================================
   SECTION B: PINNED & SCRUBBED ROOM DISCOVERY
   ========================================================================== */

.investigation-section {
  padding-block: 0;
  background-color: var(--bg-deep);
  position: relative;
  z-index: 2;
  overflow: visible;
}

.investigation-pin-wrap {
  min-height: 100vh;
  height: auto;
  display: flex;
  align-items: center;
  padding-block: calc(var(--header-height) + clamp(1rem, 2.2vh, 2rem)) clamp(1.5rem, 3vh, 2.5rem);
  overflow: visible;
}

.investigation-container {
  position: relative;
  z-index: 2;
  overflow: visible;
}

.investigation-header-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: clamp(1rem, 2.2vh, 1.85rem);
}

.investigation-header-row .section-title {
  font-size: clamp(1.85rem, 1.45rem + 1.65vw, 2.85rem);
  margin-bottom: 0.35rem;
}

.narrative-sub {
  color: var(--muted);
  font-size: var(--text-base);
  max-width: 56ch;
}

.scan-progress-track {
  width: 220px;
  height: 2px;
  background-color: rgba(236, 232, 223, 0.12);
  overflow: hidden;
  flex-shrink: 0;
}

.scan-progress-fill {
  width: 100%;
  height: 100%;
  background-color: var(--accent);
  transform: scaleX(0.25);
  transform-origin: left center;
  will-change: transform;
}

.investigation-stage-grid {
  display: grid;
  grid-template-columns: 1.18fr 1fr;
  gap: clamp(1.5rem, 3vw, 3rem);
  align-items: center;
}

.room-viewport-shell {
  position: relative;
  z-index: 1;
  min-width: 0;
  perspective: 1200px;
}

.room-viewport {
  position: relative;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--border-mid);
  background-color: var(--bg);
  overflow: hidden;
  transform-style: preserve-3d;
  will-change: transform;
}

.room-camera-rig {
  width: 100%;
  height: 100%;
  position: relative;
  transform-origin: center center;
  transform-style: preserve-3d;
  will-change: transform;
}

.room-stage-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  z-index: 1;
  transition: opacity 0.42s var(--ease-out);
  will-change: transform, opacity;
}

.room-stage-img.is-active {
  opacity: 1;
  z-index: 2;
}

.room-svg-overlay {
  display: none !important;
}

.clue-connector-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2.2;
  stroke-dasharray: 900;
  stroke-dashoffset: 900;
  opacity: 0.88;
}

.svg-hotspot {
  opacity: 0.18;
  transition: opacity var(--dur-base) var(--ease-out);
}

.svg-hotspot.is-highlighted {
  opacity: 1;
}

.hotspot-box {
  fill: rgba(200, 164, 93, 0.05);
  stroke: var(--accent);
  stroke-width: 1.75;
  stroke-dasharray: 8 4;
}

.hotspot-box-accent {
  fill: rgba(200, 164, 93, 0.14);
  stroke-dasharray: none;
}

.hotspot-dot {
  fill: var(--accent);
}

.hotspot-svg-label {
  fill: var(--text);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
}

.viewport-caption-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.85rem 1.25rem;
  background: linear-gradient(180deg, transparent, rgba(8, 8, 7, 0.92));
  display: flex;
  justify-content: flex-start;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hud-target {
  color: var(--accent);
}

.investigation-narrative {
  position: relative;
  z-index: 2;
  min-width: 0;
  overflow: visible;
}

.clue-inspection-list {
  display: flex;
  flex-direction: column;
  gap: clamp(0.45rem, 1vh, 0.7rem);
}

.clue-stage-card {
  width: 100%;
  text-align: left;
  background-color: transparent;
  border: 1px solid transparent;
  border-left: 2px solid var(--border-mid);
  padding: clamp(0.7rem, 1.25vh, 1.05rem) clamp(1rem, 1.5vw, 1.35rem);
  transition:
    background-color var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out),
    transform var(--dur-base) var(--ease-out);
}

.clue-stage-card:hover {
  background-color: rgba(255, 255, 255, 0.02);
  border-left-color: var(--muted);
}

.clue-stage-card.is-active {
  background-color: var(--surface);
  border-color: var(--border);
  border-left: 2px solid var(--accent);
}

.clue-card-title {
  font-family: var(--font-display);
  font-size: clamp(1rem, 0.92rem + 0.3vw, 1.2rem);
  font-weight: 600;
  line-height: 1.24;
  margin-bottom: 0.3rem;
  color: var(--text);
}

.clue-card-body {
  font-size: clamp(0.8rem, 0.76rem + 0.14vw, 0.88rem);
  color: var(--muted);
  line-height: 1.54;
}

@media (min-width: 1025px) and (max-height: 820px) {
  .investigation-pin-wrap {
    padding-block: calc(var(--header-height) + 0.65rem) 1rem;
  }

  .investigation-header-row {
    margin-bottom: 0.75rem;
  }

  .investigation-header-row .section-title {
    font-size: clamp(1.55rem, 1.15rem + 1.35vw, 2.15rem);
    margin-bottom: 0.2rem;
  }

  .narrative-sub {
    font-size: 0.86rem;
  }

  .clue-inspection-list {
    gap: 0.36rem;
  }

  .clue-stage-card {
    padding: 0.55rem 0.95rem;
  }

  .clue-card-title {
    font-size: 0.96rem;
    margin-bottom: 0.18rem;
  }

  .clue-card-body {
    font-size: 0.78rem;
    line-height: 1.44;
  }
}

/* ==========================================================================
   SECTION C: PUZZLE SHOWCASE
   ========================================================================== */

.puzzles-section {
  position: relative;
  z-index: 1;
  background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg) 100%);
}

.taxonomy-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-5);
  padding-block: var(--space-6);
  border-block: 1px solid var(--border-mid);
  margin-bottom: var(--space-9);
}

.taxonomy-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.taxonomy-heading {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.taxonomy-item p {
  font-size: var(--text-sm);
  color: var(--muted);
}

.case-files-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-9);
}

.case-file-sheet {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-8);
  align-items: center;
  perspective: 1200px;
}

.case-file-reverse .case-file-visual {
  order: 2;
}

.case-file-reverse .case-file-content {
  order: 1;
}

.case-file-visual {
  --card-light-x: 50%;
  --card-light-y: 50%;
  --card-light-opacity: 0;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--border-mid);
  transform-style: preserve-3d;
  will-change: transform;
}

.case-file-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
    420px circle at var(--card-light-x, 50%) var(--card-light-y, 50%),
    rgba(200, 164, 93, 0.09) 0%,
    transparent 70%
  );
  opacity: var(--card-light-opacity, 0);
  transition: opacity var(--dur-base) var(--ease-out);
  z-index: 2;
}

.case-file-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  line-height: 1.12;
  margin-bottom: var(--space-4);
}

.case-description {
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.case-diagram-box {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  border-top: 1px solid var(--border);
  padding-top: var(--space-5);
}

.diagram-cell {
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  font-size: var(--text-sm);
}

.diagram-label {
  color: var(--muted);
}

.diagram-value {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text);
}

.plant-sequence-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  border-top: 1px solid var(--border);
  padding-top: var(--space-5);
}

.plant-stage-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 0.55rem 0.9rem;
}

.stage-name {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.stage-arrow {
  color: var(--accent);
}

/* ==========================================================================
   SECTION D: INTERACTIVE KEYPAD FEATURE
   ========================================================================== */

.keypad-section {
  background:
    radial-gradient(circle at 75% 50%, rgba(200, 164, 93, 0.05) 0%, transparent 55%),
    var(--bg);
}

.keypad-layout-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: var(--space-8);
  align-items: center;
}

.demo-dossier-box {
  margin-top: var(--space-6);
  background-color: var(--surface);
  border: 1px solid var(--border-mid);
  padding: var(--space-6);
}

.demo-dossier-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--border);
}

.demo-box-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
}

.text-link-btn {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  border-bottom: 1px solid rgba(200, 164, 93, 0.45);
  padding-bottom: 2px;
  transition: color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}

.text-link-btn:hover {
  color: var(--text);
  border-color: var(--text);
}

.demo-dossier-note {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.demo-clue-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.demo-clue-list li {
  display: grid;
  grid-template-columns: 115px 1fr;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--muted);
  padding: 0.6rem 0.85rem;
  background-color: var(--bg);
  border: 1px solid var(--border);
}

.clue-digit-label {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text);
}

.demo-spoiler-disclaimer {
  font-size: var(--text-xs);
  color: var(--dim);
}

/* Physical Keypad Chassis & Door Lock Ensemble */
.hardware-ensemble {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: var(--space-5);
  align-items: stretch;
  perspective: 1100px;
}

.keypad-chassis {
  --kp-light-x: 50%;
  --kp-light-y: 30%;
  --kp-light-opacity: 0;
  background: linear-gradient(165deg, #1d1c18 0%, #11110f 100%);
  border: 2px solid #33312b;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 28px 56px rgba(0, 0, 0, 0.7);
  padding: var(--space-5);
  position: relative;
  border-radius: var(--radius-sm);
  user-select: none;
  transform-style: preserve-3d;
  will-change: transform;
  transition: border-color var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}

.keypad-chassis::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  background: radial-gradient(
    280px circle at var(--kp-light-x, 50%) var(--kp-light-y, 30%),
    rgba(236, 232, 223, 0.055) 0%,
    transparent 72%
  );
  opacity: var(--kp-light-opacity, 0);
  transition: opacity var(--dur-base) var(--ease-out);
}

.keypad-chassis.is-unlocked {
  border-color: var(--status-unlocked);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 28px 56px rgba(0, 0, 0, 0.7),
    0 0 28px rgba(104, 157, 106, 0.14);
}

.chassis-bolt {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #0c0c0a;
  border: 1px solid #3a3831;
}

.bolt-tl {
  top: 10px;
  left: 10px;
}

.bolt-tr {
  top: 10px;
  right: 10px;
}

.bolt-bl {
  bottom: 10px;
  left: 10px;
}

.bolt-br {
  bottom: 10px;
  right: 10px;
}

.chassis-top-plate {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-3);
  border-bottom: 1px solid var(--border);
}

.chassis-model-label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.led-cluster {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.led-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.led-status-text {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.led-bulb {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #2a2824;
  transition: background-color var(--dur-fast), box-shadow var(--dur-fast);
}

.led-amber.is-lit {
  background-color: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.led-red.is-lit {
  background-color: var(--status-locked);
  box-shadow: 0 0 8px var(--status-locked);
}

.led-green.is-lit {
  background-color: var(--status-unlocked);
  box-shadow: 0 0 10px var(--status-unlocked);
}

/* Recessed Display Well */
.keypad-display-well {
  background-color: #070807;
  border: 1px solid #2d2c26;
  box-shadow: inset 0 4px 12px rgba(0, 0, 0, 0.85);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-4);
}

.keypad-display-meta {
  display: flex;
  justify-content: flex-end;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin-bottom: var(--space-2);
}

.keypad-digits-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.05em;
  padding-block: var(--space-1);
}

.kp-digit-slot {
  background-color: rgba(200, 164, 93, 0.04);
  border-bottom: 2px solid #2b2923;
  padding-block: 0.15rem;
  transition: border-color var(--dur-fast), color var(--dur-fast), background-color var(--dur-fast);
}

.kp-digit-slot.is-active {
  border-bottom-color: var(--accent);
  background-color: rgba(200, 164, 93, 0.1);
}

.keypad-chassis.is-error .kp-digit-slot {
  color: var(--status-locked);
  border-bottom-color: var(--status-locked);
}

.keypad-chassis.is-unlocked .kp-digit-slot {
  color: var(--status-unlocked);
  border-bottom-color: var(--status-unlocked);
}

/* 3x4 Mechanical Buttons */
.keypad-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.65rem;
  margin-bottom: var(--space-4);
  perspective: 700px;
  transform-style: preserve-3d;
}

.kp-btn {
  min-height: 62px;
  background-color: var(--surface-key);
  border: 1px solid #393730;
  border-bottom: 3px solid #0b0b09;
  border-radius: var(--radius-xs);
  box-shadow:
    0 5px 10px rgba(0, 0, 0, 0.48),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transform-style: preserve-3d;
  will-change: transform, box-shadow;
  transition:
    background-color 140ms var(--ease-out),
    border-color 140ms var(--ease-out),
    box-shadow 140ms var(--ease-out);
}

.kp-btn:hover {
  background-color: var(--surface-key-hover);
  border-color: var(--accent-dim);
  box-shadow:
    0 8px 14px rgba(0, 0, 0, 0.56),
    inset 0 0 12px rgba(200, 164, 93, 0.08);
}

.kp-btn:active,
.kp-btn.is-pressed {
  border-bottom-width: 1px;
  background-color: #2e2b24;
  border-color: var(--accent);
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.65),
    inset 0 2px 6px rgba(0, 0, 0, 0.45);
}

.kp-key-num {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  line-height: 1;
  color: var(--text);
}

.kp-key-fn {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.kp-btn-enter .kp-key-fn {
  color: var(--text);
}

.chassis-bottom-plate {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--dim);
  padding-top: var(--space-2);
  border-top: 1px solid var(--border);
}

/* Door Deadbolt Mechanism Visualizer */
.door-mechanism-panel {
  background-color: var(--surface);
  border: 1px solid var(--border-mid);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-4);
}

.mechanism-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border);
}

.mechanism-title {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.bolt-state-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
}

.bolt-visualizer {
  display: grid;
  grid-template-columns: 1fr 48px;
  align-items: center;
  height: 64px;
  background-color: var(--bg);
  border: 1px solid var(--border);
  padding: var(--space-2);
  overflow: hidden;
}

.door-jamb-left {
  height: 26px;
  background-color: #181715;
  border: 1px solid var(--border-mid);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.deadbolt-bar {
  width: 72px;
  height: 18px;
  background: repeating-linear-gradient(-45deg,
      var(--accent),
      var(--accent) 6px,
      #25231e 6px,
      #25231e 12px);
  border: 1px solid var(--accent);
  transform: translateX(34px);
  will-change: transform;
}

.door-strike-plate {
  height: 44px;
  border: 2px solid var(--border-mid);
  display: flex;
  align-items: center;
  justify-content: center;
}

.strike-pocket {
  width: 100%;
  height: 22px;
  background-color: #050504;
}

.door-preview-frame {
  flex-grow: 1;
  min-height: 220px;
  background-color: #060605;
  border: 1px solid var(--border-mid);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: stretch;
  justify-content: center;
  padding: var(--space-4) var(--space-6) 0;
  perspective: 900px;
}

.door-leaf {
  width: 100%;
  background-color: #151412;
  border: 1px solid var(--border-mid);
  border-bottom: none;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  transform-origin: left center;
  transform-style: preserve-3d;
  will-change: transform;
}

.door-seam-light {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 2px;
  background-color: var(--accent);
  opacity: 0.15;
  box-shadow: 0 0 20px var(--accent);
  transition: width 0.5s var(--ease-out), opacity 0.5s var(--ease-out);
}

.door-mechanism-panel.is-unlocked .door-seam-light {
  width: 12px;
  opacity: 1;
}

/* ==========================================================================
   SECTION E: PROGRESSIVE HINT SYSTEM
   ========================================================================== */

.hints-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-8);
  align-items: start;
}

.hints-grid.hints-grid-single {
  grid-template-columns: 1fr;
  max-width: 820px;
}

.hint-dispenser-panel {
  margin-top: var(--space-6);
  background-color: var(--surface);
  border: 1px solid var(--border-mid);
  padding: var(--space-6);
}

.hint-dispenser-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-5);
  border-bottom: 1px solid var(--border);
}

.hint-panel-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
}

.hint-counter-text {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hint-steps-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.hint-step {
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  padding: var(--space-4) var(--space-5);
  transition: border-color var(--dur-base) var(--ease-out), opacity var(--dur-base) var(--ease-out);
}

.hint-step.is-locked {
  border-left-color: var(--dim);
  opacity: 0.45;
}

.hint-step-label {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--space-1);
}

.hint-step-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--text);
}

.hint-step.is-locked .hint-step-text {
  filter: blur(6px);
  user-select: none;
}

.hint-dispenser-actions {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

/* Telemetry Save-State Card */
.telemetry-card {
  background-color: var(--surface);
  border: 1px solid var(--border-mid);
  padding: var(--space-6);
}

.telemetry-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  padding-bottom: var(--space-4);
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--border);
}

.telemetry-code {
  background-color: var(--bg-deep);
  border: 1px solid var(--border);
  padding: var(--space-4);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  overflow-x: auto;
  margin-bottom: var(--space-5);
}

.telemetry-code span {
  color: var(--accent);
  font-weight: 500;
}

.telemetry-annotations {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.annotation-item h4 {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-1);
}

.annotation-item p {
  font-size: var(--text-sm);
  color: var(--muted);
}

/* ==========================================================================
   SECTION E2: GAME SCREENSHOTS — 3D SCROLL CAROUSEL (SEE THE ROOM)
   ========================================================================== */

.screenshots-section {
  padding-block: 0;
  position: relative;
  background:
    radial-gradient(
      ellipse 65% 50% at 50% 48%,
      rgba(200, 164, 93, 0.045) 0%,
      transparent 72%
    ),
    var(--bg);
}

.screenshots-pin-wrap {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-block: clamp(4.4rem, 6.5vh, 5.75rem) clamp(1.75rem, 3.5vh, 3rem);
  overflow: hidden;
}

.screenshots-container {
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: clamp(1rem, 2.2vh, 2rem);
}

.screenshots-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-5);
}

.screenshots-title-block {
  max-width: 680px;
}

.screenshots-title {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.2vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.04;
  margin-bottom: 0.35rem;
}

.screenshots-title-mask {
  display: inline-block;
  overflow: hidden;
  vertical-align: bottom;
  padding-bottom: 0.06em;
}

.screenshots-title-inner {
  display: inline-block;
  will-change: transform, opacity;
}

.screenshots-lead {
  font-size: clamp(0.9rem, 1.05vw, 1.02rem);
  color: var(--muted);
  max-width: 56ch;
  line-height: 1.5;
}

/* Minimal Typographic Progress Indicator (01 ──────── 06) */
.screenshots-progress-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--muted);
  flex-shrink: 0;
  padding-bottom: 0.25rem;
}

.screenshots-num-current {
  color: var(--accent);
  font-weight: 500;
  min-width: 2ch;
  text-align: right;
}

.screenshots-progress-line {
  width: clamp(72px, 8vw, 128px);
  height: 1px;
  background-color: var(--border-mid);
  position: relative;
  overflow: hidden;
}

.screenshots-progress-fill {
  position: absolute;
  inset: 0;
  background-color: var(--accent);
  transform-origin: left center;
  transform: scaleX(0.1667);
  will-change: transform;
}

/* 3D Perspective Stage & Screenshot Stack */
.screenshots-stage {
  position: relative;
  width: 100%;
  height: clamp(300px, 54vh, 560px);
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1400px;
  transform-style: preserve-3d;
  outline: none;
}

.screenshots-stage:focus-visible .screenshot-card-3d.is-active .screenshot-frame {
  border-color: var(--accent);
}

.screenshots-track-3d {
  position: relative;
  width: min(100%, 880px);
  height: 100%;
  transform-style: preserve-3d;
  display: flex;
  align-items: center;
  justify-content: center;
}

.screenshot-card-3d {
  position: absolute;
  inset: 0;
  margin: auto;
  width: 100%;
  max-height: 100%;
  aspect-ratio: 16 / 10;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  will-change: transform, opacity;
  pointer-events: none;
}

.screenshot-card-3d.is-active {
  pointer-events: auto;
}

.screenshot-tilt-layer {
  --shot-light-x: 50%;
  --shot-light-y: 50%;
  --shot-light-opacity: 0;
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  will-change: transform;
}

.screenshot-tilt-layer::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 3;
  background: radial-gradient(
    480px circle at var(--shot-light-x, 50%) var(--shot-light-y, 50%),
    rgba(200, 164, 93, 0.09) 0%,
    transparent 70%
  );
  opacity: var(--shot-light-opacity, 0);
  transition: opacity var(--dur-base) var(--ease-out);
}

.screenshot-card-3d.is-active .screenshot-tilt-layer:hover {
  --shot-light-opacity: 1;
}

.screenshot-frame {
  position: relative;
  width: 100%;
  height: 100%;
  background-color: var(--surface);
  border: 1px solid var(--border-mid);
  overflow: hidden;
  backface-visibility: hidden;
  transform: translateZ(0);
  box-shadow: 0 22px 48px rgba(0, 0, 0, 0.76);
  transition: border-color var(--dur-base) var(--ease-out);
}

.screenshot-card-3d.is-active .screenshot-frame {
  border-color: rgba(200, 164, 93, 0.38);
}

.screenshot-img-inner {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  backface-visibility: hidden;
  will-change: transform;
}

.screenshot-frame-vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  background: radial-gradient(
    circle at center,
    transparent 58%,
    rgba(8, 8, 7, 0.42) 100%
  );
}

/* Coordinated Typographic Caption Bar */
.screenshots-footer-bar {
  position: relative;
  border-top: 1px solid var(--border);
  padding-top: clamp(0.85rem, 1.8vh, 1.35rem);
  min-height: clamp(64px, 9vh, 84px);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.screenshots-caption-stage {
  position: relative;
  width: 100%;
  min-height: 54px;
}

.screenshot-caption-item {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 36px 1fr;
  align-items: baseline;
  gap: var(--space-4);
  opacity: 0;
  pointer-events: none;
  will-change: transform, opacity;
}

.screenshot-caption-item.is-active {
  opacity: 1;
  pointer-events: auto;
}

.shot-caption-num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.shot-caption-copy {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.45rem 1.25rem;
}

.shot-caption-title {
  font-family: var(--font-display);
  font-size: clamp(0.95rem, 1.2vw, 1.15rem);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
}

.shot-caption-desc {
  font-size: clamp(0.86rem, 0.98vw, 0.96rem);
  color: var(--muted);
  line-height: 1.45;
  max-width: 68ch;
}

/* Short-Height Desktop Screens (1366x768, 1280x720) */
@media (min-width: 1025px) and (max-height: 820px) {
  .screenshots-pin-wrap {
    padding-block: 4.1rem 1.25rem;
  }

  .screenshots-container {
    gap: 0.75rem;
  }

  .screenshots-title {
    font-size: clamp(1.6rem, 2.5vw, 2.25rem);
    margin-bottom: 0.2rem;
  }

  .screenshots-lead {
    font-size: 0.88rem;
  }

  .screenshots-stage {
    height: clamp(250px, 47vh, 410px);
  }

  .screenshots-track-3d {
    width: min(100%, 720px);
  }

  .screenshots-footer-bar {
    padding-top: 0.65rem;
    min-height: 54px;
  }

  .screenshots-caption-stage {
    min-height: 44px;
  }
}

/* ==========================================================================
   SECTION F: MEDIA & VISUAL ARCHIVE
   ========================================================================== */

.trailer-showcase-frame {
  margin-bottom: var(--space-7);
  perspective: 1200px;
}

.trailer-media-box {
  --card-light-x: 50%;
  --card-light-y: 50%;
  --card-light-opacity: 0;
  position: relative;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--border-mid);
  background-color: var(--surface);
  transform-style: preserve-3d;
  will-change: transform;
}

.trailer-media-box::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
    520px circle at var(--card-light-x, 50%) var(--card-light-y, 50%),
    rgba(200, 164, 93, 0.085) 0%,
    transparent 70%
  );
  opacity: var(--card-light-opacity, 0);
  transition: opacity var(--dur-base) var(--ease-out);
  z-index: 1;
}

.trailer-poster-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.trailer-overlay-content {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: radial-gradient(circle at center, rgba(8, 8, 7, 0.2) 0%, rgba(8, 8, 7, 0.72) 100%);
  padding: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
}

.trailer-play-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: 1.15rem 2rem;
  background-color: rgba(8, 8, 7, 0.88);
  border: 1px solid var(--accent);
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  transition:
    background-color var(--dur-base) var(--ease-out),
    color var(--dur-base) var(--ease-out),
    transform var(--dur-fast) var(--ease-tactile);
}

.trailer-play-btn:hover {
  background-color: var(--accent);
  color: var(--bg);
  transform: scale(1.03);
}

.trailer-play-icon {
  font-size: 0.85rem;
  color: var(--accent);
}

.trailer-play-btn:hover .trailer-play-icon {
  color: var(--bg);
}

/* Gallery Grid */
.media-gallery-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-6);
  perspective: 1200px;
}

.media-span-7 {
  grid-column: span 7;
}

.media-span-5 {
  grid-column: span 5;
}

.media-span-4 {
  grid-column: span 4;
}

.media-span-12 {
  grid-column: span 12;
}

.media-figure {
  --card-light-x: 50%;
  --card-light-y: 50%;
  --card-light-opacity: 0;
  position: relative;
  background-color: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transform-style: preserve-3d;
  will-change: transform;
  transition: border-color var(--dur-base) var(--ease-out);
}

.media-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
    420px circle at var(--card-light-x, 50%) var(--card-light-y, 50%),
    rgba(200, 164, 93, 0.085) 0%,
    transparent 70%
  );
  opacity: var(--card-light-opacity, 0);
  transition: opacity var(--dur-base) var(--ease-out);
  z-index: 2;
}

.media-figure:hover {
  border-color: var(--border-accent);
}

.media-lightbox-trigger {
  width: 100%;
  text-align: left;
  display: block;
  overflow: hidden;
}

.media-img-wrap {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.media-img-wide {
  aspect-ratio: 21 / 9;
}

.media-caption {
  padding: 0.85rem 1.1rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

/* ==========================================================================
   SECTION G: DEVELOPMENT & ENGINE ARCHITECTURE
   ========================================================================== */

.tech-spec-table {
  border-top: 1px solid var(--border-mid);
  margin-bottom: var(--space-5);
}

.tech-spec-row {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--space-6);
  align-items: baseline;
  padding-block: var(--space-5);
  border-bottom: 1px solid var(--border);
  transition: background-color var(--dur-fast) var(--ease-out), padding-inline var(--dur-fast) var(--ease-out);
}

.tech-spec-row:hover {
  background-color: var(--surface);
  padding-inline: var(--space-4);
}

.tech-spec-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--text);
}

.tech-spec-detail {
  color: var(--muted);
  font-size: var(--text-base);
}

.tech-disclaimer {
  font-size: var(--text-xs);
  color: var(--dim);
}

/* ==========================================================================
   SECTION H: DOWNLOAD — STANDALONE PC EDITION (WINDOWS ONLY)
   ========================================================================== */

.download-section {
  position: relative;
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(200, 164, 93, 0.06) 0%, transparent 70%),
    linear-gradient(180deg, var(--bg) 0%, var(--surface) 50%, var(--bg) 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.download-editorial-header {
  margin-bottom: var(--space-6);
}

.download-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.download-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--status-unlocked);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  background-color: rgba(104, 157, 106, 0.1);
  border: 1px solid rgba(104, 157, 106, 0.25);
  border-radius: var(--radius-xs);
}

.status-pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--status-unlocked);
  box-shadow: 0 0 8px var(--status-unlocked);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.4;
    transform: scale(0.85);
  }
}

/* OS Compatibility Banner */
.download-os-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background-color: var(--surface-elevated);
  border: 1px solid var(--border-mid);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-xs);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.os-banner-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: 1 1 500px;
}

.os-icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-xs);
  background: rgba(200, 164, 93, 0.12);
  border: 1px solid var(--border-accent);
  color: var(--accent-bright);
  flex-shrink: 0;
}

.os-info-text {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.os-headline {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.os-badge-supported {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text);
  text-transform: uppercase;
}

.os-version-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  background-color: var(--accent-soft);
  padding: 0.1rem 0.45rem;
  border-radius: var(--radius-xs);
}

.os-description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.45;
}

.os-description strong {
  color: var(--accent-bright);
}

.os-banner-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.unsupported-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-xs);
}

.unsupported-icon {
  color: var(--status-locked);
  font-weight: bold;
}

/* Primary Download Card */
.download-card {
  position: relative;
  background-color: var(--surface-panel);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-sm);
  padding: clamp(1.5rem, 3.5vw, 3rem);
  margin-bottom: var(--space-8);
  overflow: hidden;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.5);
}

.download-card-glow {
  position: absolute;
  top: -120px;
  right: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(200, 164, 93, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.download-card-body {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: clamp(1.5rem, 3.5vw, 3.5rem);
  align-items: stretch;
}

.download-card-main {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-5);
}

.download-file-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.download-file-title-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.download-file-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  text-transform: uppercase;
}

.download-package-name {
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 1.15rem + 1vw, 2.1rem);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.01em;
}

.download-type-pill {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--accent-bright);
  background: rgba(200, 164, 93, 0.15);
  border: 1px solid var(--border-accent);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-xs);
  text-transform: uppercase;
  align-self: flex-start;
}

.download-description {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Spec Grid inside Card */
.download-spec-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: var(--space-4);
  border-radius: var(--radius-xs);
}

.spec-cell {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.spec-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

.spec-val {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.spec-val svg {
  color: var(--accent);
  flex-shrink: 0;
}

/* Actions Row */
.download-actions-row {
  display: flex;
  align-items: stretch;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.btn-download-primary {
  flex: 1 1 280px;
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-4);
  padding: 1.15rem 1.75rem;
  background: linear-gradient(135deg, #f1ede3 0%, #d8d2c4 100%);
  color: #080807;
  border: 1px solid #fff;
  border-radius: var(--radius-xs);
  text-decoration: none;
  cursor: pointer;
  transition:
    transform var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-fast) var(--ease-out),
    background var(--dur-fast) var(--ease-out);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.4), 0 0 25px rgba(200, 164, 93, 0.2);
}

.btn-download-primary:hover {
  background: linear-gradient(135deg, #dfc07f 0%, #c8a45d 100%);
  border-color: #fce8b8;
  color: #080807;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5), 0 0 32px rgba(200, 164, 93, 0.4);
}

.download-btn-icons {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.55rem;
  background: rgba(0, 0, 0, 0.12);
  border-radius: var(--radius-xs);
}

.download-btn-text {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.btn-main-label {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.2;
}

.btn-sub-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  opacity: 0.85;
  letter-spacing: 0.03em;
  line-height: 1.2;
}

.btn-copy-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1.15rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  flex-shrink: 0;
  cursor: pointer;
}

.btn-copy-link.is-copied {
  border-color: var(--status-unlocked);
  color: var(--status-unlocked);
}

/* Card Sidebar */
.download-card-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background-color: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: var(--space-5);
}

.sidebar-title {
  display: block;
  font-family: var(--font-display);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
  padding-bottom: var(--space-2);
}

.specs-mini-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.specs-mini-list li {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  font-size: 0.82rem;
  line-height: 1.35;
}

.specs-mini-list li strong {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.specs-mini-list li span {
  color: var(--text-secondary);
}

.sidebar-security-note {
  margin-top: auto;
  padding: var(--space-3);
  background-color: rgba(200, 164, 93, 0.06);
  border: 1px dashed rgba(200, 164, 93, 0.3);
  border-radius: var(--radius-xs);
}

.security-note-header {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-bright);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
}

.sidebar-security-note p {
  font-size: 0.76rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.sidebar-security-note strong {
  color: var(--text);
}

/* 3-Step Installation Guide */
.download-steps-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.steps-heading {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}

.download-steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.step-card {
  position: relative;
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  background-color: var(--surface-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  transition: border-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.step-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.step-num {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.85;
  line-height: 1;
}

.step-body {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.step-title {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text);
}

.step-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.step-text code {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  background: var(--surface);
  padding: 0.1rem 0.35rem;
  border-radius: 2px;
  color: var(--accent-bright);
}

/* ==========================================================================
   SECTION H: FINAL CTA — THE THRESHOLD (ARCHITECTURAL DOORWAY TRAILER REVEAL)
   ========================================================================== */

.final-cta-section {
  padding-block: var(--space-10);
  perspective: 1400px;
}

.threshold-box {
  position: relative;
  border: 1px solid var(--border-mid);
  background-color: var(--bg-deep);
  min-height: clamp(390px, 56vh, 560px);
  display: flex;
  align-items: stretch;
  justify-content: center;
  overflow: hidden;
  text-align: center;
  perspective: 1300px;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  transition:
    border-color var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out);
}

.threshold-box.is-playing-trailer {
  min-height: clamp(320px, 68vh, 680px);
  border-color: rgba(200, 164, 93, 0.44);
  box-shadow:
    0 36px 90px rgba(0, 0, 0, 0.92),
    0 0 0 1px rgba(200, 164, 93, 0.16);
}

/* 3D Camera Rig wrapping the room, doorway, and foreground layers */
.threshold-camera-rig {
  position: relative;
  width: 100%;
  min-height: inherit;
  padding: clamp(3.75rem, 8vw, 7.5rem) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1200px;
  transform-style: preserve-3d;
  will-change: transform;
}

/* Layer 1 (0.25x Parallax): Deep Room Ambience */
.threshold-room-deep {
  position: absolute;
  inset: -6%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(
      ellipse 44% 68% at 50% 50%,
      rgba(200, 164, 93, 0.08) 0%,
      rgba(20, 17, 12, 0.42) 48%,
      rgba(8, 8, 7, 0.98) 100%
    ),
    linear-gradient(
      180deg,
      rgba(12, 12, 10, 0.92) 0%,
      rgba(8, 8, 7, 0.84) 50%,
      rgba(6, 6, 5, 0.96) 100%
    );
  will-change: transform, opacity;
}

/* Layer 2 (0.50x Parallax): Room Architectural Wall Recess & Subtle Grid Seams */
.threshold-room-arch {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(
      90deg,
      transparent 0%,
      transparent calc(26% - 1px),
      rgba(236, 232, 223, 0.045) 26%,
      transparent calc(26% + 1px),
      transparent calc(74% - 1px),
      rgba(236, 232, 223, 0.045) 74%,
      transparent calc(74% + 1px),
      transparent 100%
    );
  will-change: transform, opacity;
}

.threshold-room-arch::before {
  content: "";
  position: absolute;
  top: 12%;
  bottom: 12%;
  left: 50%;
  width: clamp(160px, 19vw, 230px);
  transform: translateX(-50%);
  border: 1px solid rgba(200, 164, 93, 0.12);
  background: linear-gradient(
    180deg,
    rgba(200, 164, 93, 0.03) 0%,
    rgba(8, 8, 7, 0.65) 50%,
    rgba(200, 164, 93, 0.03) 100%
  );
}

/* Layer 3 (1.50x Approach): Doorway Portal (Masked by vertical clip-path between the two amber edges) */
.threshold-video-bg-wrap {
  position: absolute;
  inset: 0;
  z-index: 2;
  overflow: hidden;
  background-color: #060605;
  /* Closed vertical doorway seam at rest — widens in lockstep with the two amber door edges */
  clip-path: inset(0% 50% 0% 50%);
  perspective: 1100px;
  transform-style: preserve-3d;
  will-change: clip-path;
}

/* Trailer Frame Waiting Behind the Door (Starts at deeper Z and approaches viewer as camera pushes in) */
.threshold-trailer-stage {
  position: absolute;
  inset: 0;
  background: #080807 url("assets/trailer-poster.webp") center center / cover no-repeat;
  transform: translate3d(0, 0, -180px) scale(0.88);
  opacity: 0.76;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  will-change: transform, opacity;
}

.threshold-bg-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 1;
  backface-visibility: hidden;
  will-change: transform, opacity;
}

.threshold-embed-mount {
  position: absolute;
  inset: 0;
  z-index: 2;
  background-color: #050504;
}

.threshold-embed-mount iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

/* Subtle architectural doorway depth vignette that clears as the camera passes through */
.threshold-video-scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(
      circle at 50% 50%,
      rgba(8, 8, 7, 0.16) 0%,
      rgba(8, 8, 7, 0.72) 82%,
      rgba(6, 6, 5, 0.92) 100%
    ),
    linear-gradient(
      90deg,
      rgba(8, 8, 7, 0.65) 0%,
      rgba(8, 8, 7, 0.08) 24%,
      rgba(8, 8, 7, 0.08) 76%,
      rgba(8, 8, 7, 0.65) 100%
    );
  will-change: opacity;
}

/* Layer 4 (1.00x Parallax): Architectural Door Panels & Dual Synchronized Amber Door Edges */
.threshold-door-outline {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  align-items: stretch;
  justify-content: center;
  pointer-events: none;
  opacity: 0.88;
  perspective: 1100px;
  transform-style: preserve-3d;
  will-change: transform, opacity;
}

.threshold-door-panel {
  width: clamp(140px, 20vw, 240px);
  border-inline: 1px solid rgba(236, 232, 223, 0.08);
  background: linear-gradient(
    180deg,
    rgba(10, 10, 8, 0.56) 0%,
    rgba(8, 8, 7, 0.34) 50%,
    rgba(10, 10, 8, 0.56) 100%
  );
  transform-style: preserve-3d;
  will-change: transform, opacity;
}

.threshold-left {
  transform-origin: left center;
}

.threshold-right {
  transform-origin: right center;
}

/* Center Amber Architectural Seam — Contains TWO synchronized vertical edges (never scaled via scaleX) */
.threshold-light-slit {
  position: relative;
  width: 2px;
  height: 100%;
  flex-shrink: 0;
  transform-style: preserve-3d;
  will-change: transform, opacity;
}

.threshold-slit-edge {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: linear-gradient(
    180deg,
    rgba(200, 164, 93, 0.42) 0%,
    rgba(218, 182, 108, 0.98) 20%,
    rgba(232, 198, 124, 1) 50%,
    rgba(218, 182, 108, 0.98) 80%,
    rgba(200, 164, 93, 0.42) 100%
  );
  box-shadow:
    0 0 18px rgba(200, 164, 93, 0.68),
    0 0 38px rgba(200, 164, 93, 0.28);
  backface-visibility: hidden;
  will-change: transform, opacity;
}

.threshold-slit-left {
  box-shadow:
    -6px 0 22px rgba(200, 164, 93, 0.45),
    0 0 14px rgba(200, 164, 93, 0.72);
}

.threshold-slit-right {
  box-shadow:
    6px 0 22px rgba(200, 164, 93, 0.45),
    0 0 14px rgba(200, 164, 93, 0.72);
}

/* Layer 5 (1.20x Foreground Parallax): Typography & CTA Buttons */
.threshold-content {
  position: relative;
  z-index: 4;
  max-width: 760px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  perspective: 1000px;
  transform-style: preserve-3d;
  will-change: transform, opacity;
}

.threshold-box.is-playing-trailer .threshold-content {
  pointer-events: none;
}

.threshold-title {
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 1.6rem + 3.4vw, 4.4rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
  text-shadow: 0 14px 36px rgba(0, 0, 0, 0.88);
  perspective: 900px;
  transform-style: preserve-3d;
}

.threshold-sub {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  text-shadow: 0 8px 24px rgba(0, 0, 0, 0.88);
  perspective: 800px;
  transform-style: preserve-3d;
  will-change: transform, opacity, filter;
}

/* GSAP SplitText Elements */
.threshold-split-line {
  display: block;
  overflow: visible;
  transform-style: preserve-3d;
}

.threshold-split-word,
.threshold-split-char {
  display: inline-block;
  will-change: transform, opacity;
  backface-visibility: hidden;
}

.threshold-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  will-change: transform, opacity;
}

/* Integrated Trailer Playback HUD inside #threshold-box */
.threshold-trailer-hud {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  pointer-events: none;
  opacity: 0;
  will-change: opacity;
}

.threshold-trailer-hud.is-active {
  pointer-events: auto;
}

.threshold-hud-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: clamp(0.9rem, 2vw, 1.35rem) clamp(1.1rem, 2.5vw, 1.75rem);
  background: linear-gradient(180deg, rgba(8, 8, 7, 0.88) 0%, transparent 100%);
  will-change: transform, opacity;
}

.threshold-hud-title {
  font-family: var(--font-display);
  font-size: clamp(0.72rem, 0.9vw, 0.84rem);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.threshold-close-btn {
  display: inline-flex;
  align-items: center;
  padding: 0.42rem 0.88rem;
  background-color: rgba(12, 12, 10, 0.88);
  border: 1px solid var(--border-mid);
  color: var(--text);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
}

.threshold-close-btn:hover,
.threshold-close-btn:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.threshold-hud-caption-wrap {
  margin-top: auto;
  padding-inline: clamp(1.1rem, 2.5vw, 1.75rem);
  padding-bottom: 0.65rem;
  text-align: left;
  pointer-events: none;
}

.threshold-hud-caption {
  font-family: var(--font-display);
  font-size: clamp(0.88rem, 1.3vw, 1.2rem);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text);
  text-shadow: 0 6px 20px rgba(0, 0, 0, 0.92);
  will-change: transform, opacity;
}

.threshold-hud-bottom {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.6vw, 1.25rem);
  padding: 0.85rem clamp(1.1rem, 2.5vw, 1.75rem);
  background: linear-gradient(180deg, transparent 0%, rgba(8, 8, 7, 0.94) 100%);
  border-top: 1px solid rgba(236, 232, 223, 0.08);
  will-change: transform, opacity;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
  background-color: var(--bg-deep);
  padding-top: var(--space-8);
  padding-bottom: var(--space-6);
  border-top: 1px solid var(--border);
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-7);
  padding-bottom: var(--space-7);
  border-bottom: 1px solid var(--border);
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: var(--space-2);
}

.footer-tagline {
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
}

.footer-motto {
  font-size: var(--text-xs);
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-col-title {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-4);
}

.footer-nav-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
}

.footer-nav-list a {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--muted);
  transition: color var(--dur-fast) var(--ease-out);
}

.footer-nav-list a:hover {
  color: var(--accent);
}

.footer-credits-dl {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: var(--text-sm);
}

.footer-credits-dl dt {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.footer-credits-dl dd {
  color: var(--text);
}

.footer-bottom-bar {
  padding-top: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--muted);
}

.back-to-top {
  font-family: var(--font-display);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.back-to-top:hover {
  color: var(--accent);
}

/* ==========================================================================
   MODALS (3D CINEMATIC TRAILER PORTAL & LIGHTBOX)
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 500;
  background-color: rgba(5, 5, 4, 0.92);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
}

.modal-backdrop[hidden] {
  display: none !important;
}

.modal-dialog {
  width: min(920px, 100%);
  background-color: var(--surface);
  border: 1px solid var(--border-mid);
  box-shadow: 0 32px 64px rgba(0, 0, 0, 0.85);
}

.modal-dialog-wide {
  width: min(1120px, 100%);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
}

.lightbox-label {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--accent);
}

.modal-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
}

.modal-close-btn {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  color: var(--muted);
  padding: var(--space-2);
  transition: color var(--dur-fast) var(--ease-out);
}

.modal-close-btn:hover {
  color: var(--accent);
}

.modal-body {
  padding: var(--space-5);
}

/* --------------------------------------------------------------------------
   CINEMATIC 3D TRAILER PORTAL (GSAP Flip + 3D Camera Depth)
   -------------------------------------------------------------------------- */

.trailer-portal-backdrop {
  background-color: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  padding: 0;
  overflow: hidden;
}

.trailer-backdrop-veil {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(
      ellipse 70% 60% at 50% 50%,
      rgba(12, 12, 10, 0.86) 0%,
      rgba(4, 4, 3, 0.98) 100%
    );
  opacity: 0;
  will-change: opacity;
}

.trailer-stage-perspective {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(3.4rem, 7vh, 5.25rem) clamp(1rem, 4vw, 3.5rem) clamp(1.5rem, 4vh, 3rem);
  perspective: 1300px;
  transform-style: preserve-3d;
  pointer-events: none;
}

/* GSAP Flip Target: State A (Preview Origin) vs State B (Fullscreen Stage) */
.trailer-flip-shell {
  aspect-ratio: 16 / 9;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  pointer-events: auto;
}

.trailer-flip-shell.is-preview-origin {
  position: fixed;
  top: var(--origin-top, 50vh);
  left: var(--origin-left, 50vw);
  width: var(--origin-width, 256px);
  margin: 0;
  z-index: 10;
}

.trailer-flip-shell.is-fullscreen-stage {
  position: relative;
  width: min(1120px, 90vw, calc(76vh * 16 / 9));
  margin: auto;
  z-index: 10;
}

/* Inner 3D Camera Push Container (Independent of Flip's 2D transform matrix) */
.trailer-camera-rig {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  will-change: transform;
}

.trailer-portal-dialog {
  width: 100%;
  height: 100%;
  position: relative;
  background-color: var(--bg-deep);
  border: 1px solid rgba(200, 164, 93, 0.36);
  box-shadow:
    0 38px 90px rgba(0, 0, 0, 0.92),
    0 0 0 1px rgba(236, 232, 223, 0.05);
  transform-style: preserve-3d;
  backface-visibility: hidden;
}

/* Floating Architectural Header Bar Above the 16:9 Portal Frame */
.trailer-portal-header {
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(100% + 0.65rem);
  padding: 0 0.15rem;
  border-bottom: none;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  opacity: 0;
  transform: translateY(8px);
  will-change: transform, opacity;
}

.trailer-portal-header .modal-title {
  font-size: clamp(0.84rem, 1vw, 1rem);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.trailer-close-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.42rem 0.85rem;
  background-color: rgba(14, 14, 12, 0.88);
  border: 1px solid var(--border-mid);
  color: var(--text);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  transition:
    border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    background-color var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
}

.trailer-close-btn:hover,
.trailer-close-btn:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  background-color: var(--surface);
  transform: translateY(-1px);
}

.trailer-portal-body {
  padding: 0;
  width: 100%;
  height: 100%;
}

.trailer-modal-frame {
  position: relative;
  width: 100%;
  height: 100%;
  border: none;
  background-color: var(--bg-deep);
  overflow: hidden;
  backface-visibility: hidden;
  transform: translateZ(0);
}

/* Layer 1: Continuous Poster Image (Never disappears before video is ready) */
.trailer-poster-layer {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  background-color: var(--bg-deep);
}

.trailer-poster-expand-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  backface-visibility: hidden;
  will-change: transform;
}

.trailer-aperture-sheen {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(
      115deg,
      transparent 25%,
      rgba(200, 164, 93, 0.14) 48%,
      transparent 72%
    ),
    radial-gradient(
      circle at center,
      transparent 52%,
      rgba(8, 8, 7, 0.55) 100%
    );
  opacity: 0.85;
  will-change: opacity, transform;
}

/* Layer 2: Active Video & In-Engine Trailer Sequence Layer */
.trailer-video-layer {
  position: absolute;
  inset: 0;
  z-index: 2;
  opacity: 0;
  pointer-events: none;
  background-color: var(--bg-deep);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  will-change: opacity;
}

.trailer-video-layer.is-ready {
  pointer-events: auto;
}

.trailer-external-mount {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background-color: #050504;
}

.trailer-external-mount iframe,
.trailer-external-mount video {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  object-fit: cover;
}

/* Built-In Real-Time In-Engine Cinematic Trailer Player */
.trailer-inengine-player {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  user-select: none;
}

.trailer-reel-viewport {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background-color: var(--bg-deep);
  cursor: pointer;
}

.trailer-reel-shot {
  position: absolute;
  inset: 0;
  opacity: 0;
  will-change: transform, opacity;
  backface-visibility: hidden;
}

.trailer-reel-shot.is-active {
  opacity: 1;
}

.trailer-reel-shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  backface-visibility: hidden;
}

.trailer-reel-vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(
      180deg,
      rgba(8, 8, 7, 0.35) 0%,
      transparent 24%,
      transparent 64%,
      rgba(8, 8, 7, 0.88) 100%
    ),
    radial-gradient(
      circle at center,
      transparent 55%,
      rgba(8, 8, 7, 0.48) 100%
    );
}

.trailer-reel-caption-wrap {
  position: absolute;
  left: clamp(1.25rem, 3vw, 2.5rem);
  right: clamp(1.25rem, 3vw, 2.5rem);
  bottom: clamp(3.6rem, 7vh, 4.75rem);
  pointer-events: none;
  z-index: 3;
}

.trailer-reel-caption {
  font-family: var(--font-display);
  font-size: clamp(0.92rem, 1.45vw, 1.35rem);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text);
  text-shadow: 0 8px 24px rgba(0, 0, 0, 0.9);
  will-change: transform, opacity;
}

/* Minimalist Custom Trailer Controls Bar */
.trailer-controls-bar {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.6vw, 1.25rem);
  padding: 0.75rem clamp(1rem, 2.5vw, 1.75rem);
  background: linear-gradient(180deg, transparent 0%, rgba(8, 8, 7, 0.92) 100%);
  border-top: 1px solid rgba(236, 232, 223, 0.08);
}

.trailer-ctrl-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.32rem 0.68rem;
  border: 1px solid var(--border-mid);
  background-color: rgba(17, 17, 15, 0.84);
  color: var(--text);
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  min-width: 78px;
  justify-content: center;
  transition:
    border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}

.trailer-ctrl-btn:hover,
.trailer-ctrl-btn:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.trailer-ctrl-icon {
  font-size: 0.64rem;
  color: var(--accent);
}

.trailer-timeline-track {
  flex: 1 1 auto;
  height: 20px;
  display: flex;
  align-items: center;
  cursor: pointer;
  position: relative;
}

.trailer-timeline-track::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background-color: rgba(236, 232, 223, 0.18);
}

.trailer-timeline-fill {
  position: relative;
  width: 100%;
  height: 2px;
  background-color: var(--accent);
  transform-origin: left center;
  transform: scaleX(0);
  will-change: transform;
}

.trailer-timecode {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  flex-shrink: 0;
  min-width: 9ch;
  text-align: right;
}

.lightbox-img-container {
  background-color: var(--bg);
  border: 1px solid var(--border);
  max-height: 75vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-img-container img {
  max-height: 75vh;
  width: auto;
  object-fit: contain;
}

/* ==========================================================================
   RESPONSIVE DESIGN BREAKPOINTS
   ========================================================================== */

@media (max-width: 1366px) {
  .header-container {
    padding-inline: 1.5rem;
    gap: 0.85rem;
  }

  .nav-list {
    gap: 0.25rem;
  }

  .nav-link {
    padding-inline: 0.65rem;
    font-size: 0.72rem;
    letter-spacing: 0.1em;
  }
}

@media (max-width: 1200px) {
  .loop-steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .keypad-layout-grid {
    grid-template-columns: 1fr;
    gap: var(--space-7);
  }

  .hardware-ensemble {
    grid-template-columns: 360px 1fr;
    max-width: 780px;
  }
}

@media (max-width: 1080px) {
  .primary-nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: inline-flex;
  }

  .download-card-body {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

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

@media (max-width: 1024px) {
  .investigation-pin-wrap {
    min-height: auto;
    padding-block: var(--space-9) var(--space-8);
  }

  .investigation-stage-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

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

  .case-file-sheet,
  .case-file-reverse {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  .case-file-reverse .case-file-visual,
  .case-file-reverse .case-file-content {
    order: unset;
  }

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

  .screenshots-stage {
    height: clamp(270px, 46vh, 430px);
    perspective: 1100px;
  }

  .screenshots-track-3d {
    width: min(100%, 680px);
  }

  .tech-spec-row {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
  }

  .trailer-stage-perspective {
    perspective: 1050px;
  }

  .trailer-flip-shell.is-fullscreen-stage {
    width: min(94vw, calc(74vh * 16 / 9));
  }
}

@media (max-width: 768px) {
  :root {
    --space-10: 6rem;
  }

  .btn-header {
    display: none;
  }

  .download-os-banner {
    flex-direction: column;
    align-items: flex-start;
  }

  .download-spec-grid {
    grid-template-columns: 1fr;
  }

  .download-steps-grid {
    grid-template-columns: 1fr;
  }

  .download-actions-row {
    flex-direction: column;
  }

  .btn-download-primary,
  .btn-copy-link {
    width: 100%;
    justify-content: center;
  }

  .loop-steps-grid {
    grid-template-columns: 1fr;
  }

  .taxonomy-strip {
    grid-template-columns: 1fr;
  }

  .hardware-ensemble {
    grid-template-columns: 1fr;
  }

  .keypad-chassis {
    max-width: 100%;
  }

  .screenshots-header-row {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .screenshots-stage {
    height: clamp(210px, 36vh, 320px);
    perspective: 900px;
  }

  .screenshots-track-3d {
    width: 92%;
  }

  .shot-caption-copy {
    flex-direction: column;
    gap: 0.2rem;
  }

  .screenshots-caption-stage {
    min-height: 78px;
  }

  .media-span-7,
  .media-span-5,
  .media-span-4,
  .media-span-12 {
    grid-column: span 12;
  }

  .media-img-wide {
    aspect-ratio: 16 / 10;
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
  }

  .trailer-stage-perspective {
    padding: 3.6rem 0.75rem 1.25rem;
    perspective: 850px;
  }

  .trailer-flip-shell.is-fullscreen-stage {
    width: 94vw;
  }

  .trailer-portal-header .modal-title {
    font-size: 0.72rem;
    letter-spacing: 0.08em;
  }

  .trailer-reel-caption-wrap {
    bottom: 3.1rem;
  }

  .trailer-reel-caption {
    font-size: 0.78rem;
    letter-spacing: 0.12em;
  }

  .trailer-controls-bar {
    padding: 0.5rem 0.75rem;
    gap: 0.5rem;
  }
}

@media (max-width: 480px) {
  .header-container {
    padding-inline: 1rem;
  }

  .audio-label {
    display: none;
  }

  .audio-toggle-btn {
    padding: 0.55rem;
  }

  .download-card {
    padding: var(--space-4);
  }

  .download-package-name {
    font-size: 1.25rem;
  }

  .btn-download-primary {
    padding: 1rem 1.25rem;
  }

  .btn-main-label {
    font-size: 0.86rem;
  }

  .mobile-nav-list {
    grid-template-columns: 1fr;
  }

  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-cta-group .btn {
    width: 100%;
  }

  .case-diagram-box {
    grid-template-columns: 1fr;
  }

  .demo-clue-list li {
    grid-template-columns: 1fr;
  }

  .kp-btn {
    min-height: 58px;
  }

  .screenshots-track-3d {
    width: 96%;
  }

  .screenshot-caption-item {
    grid-template-columns: 28px 1fr;
    gap: var(--space-2);
  }

  .threshold-actions {
    flex-direction: column;
    width: 100%;
  }

  .threshold-actions .btn {
    width: 100%;
  }

  .trailer-flip-shell.is-fullscreen-stage {
    width: 96vw;
  }

  .trailer-timecode {
    display: none;
  }
}

/* ==========================================================================
   ACCESSIBILITY: REDUCED MOTION
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .room-loader,
  .custom-cursor {
    display: none !important;
  }

  .hero-bg-image {
    transform: none !important;
  }

  .clue-connector-line {
    stroke-dashoffset: 0 !important;
  }

  .svg-hotspot {
    opacity: 1 !important;
  }

  .screenshots-pin-wrap {
    min-height: auto !important;
    padding-block: var(--space-9) !important;
    overflow: visible !important;
  }

  .screenshots-stage {
    height: auto !important;
    perspective: none !important;
  }

  .screenshots-track-3d {
    width: 100% !important;
    height: auto !important;
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)) !important;
    gap: var(--space-5) !important;
  }

  .screenshot-card-3d {
    position: relative !important;
    inset: auto !important;
    opacity: 1 !important;
    transform: none !important;
    pointer-events: auto !important;
  }

  .screenshots-caption-stage {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)) !important;
    gap: var(--space-4) !important;
    min-height: auto !important;
  }

  .screenshot-caption-item {
    position: relative !important;
    inset: auto !important;
    opacity: 1 !important;
    transform: none !important;
    pointer-events: auto !important;
  }

  .trailer-backdrop-veil {
    opacity: 1 !important;
  }

  .trailer-portal-header {
    opacity: 1 !important;
    transform: none !important;
  }

  .trailer-video-layer {
    opacity: 1 !important;
    pointer-events: auto !important;
  }
}