:root {
  --font-display: "Orbitron", "Palatino Linotype", serif;
  --tracking-base: 0.03em;
  --bg: #0b1020;
  --bg-overlay-top: rgba(11, 16, 32, 0.36);
  --bg-overlay-bottom: rgba(11, 16, 32, 0.42);
  --bg-layer-far-offset: 0px;
  --bg-layer-midfar-offset: 0px;
  --bg-layer-mid-offset: 0px;
  --bg-layer-near-offset: 0px;
  /* OPACITY */
  --frame-opacity: 0.75; 
  --surface-rgb: 82, 85, 91;
  --surface-strong-rgb: 110, 112, 116;
  --surface-footer-rgb: 96, 99, 104;
  --surface: rgba(var(--surface-rgb), var(--frame-opacity));
  --surface-strong: rgba(var(--surface-strong-rgb), var(--frame-opacity));
  --surface-footer: rgba(var(--surface-footer-rgb), var(--frame-opacity));
  --surface-soft: rgba(111, 113, 143, 0.78);
  --surface-soft-hover: rgba(111, 113, 143, 0.9);
  --surface-card: #11182b;
  --surface-card-soft: rgba(17, 24, 43, 0.72);
  --surface-metal-light: #c2c7d0;
  --surface-metal-mid: #8f97a4;
  --surface-metal-dark: #5f6672;
  --text-primary: #e8eef7;
  --text-secondary: #b6c4e2;
  --text-muted: #878e9e;
  --accent: #6fe7ff;
  --accent-soft: #8488a4;
  --border: #26324a;
  --border-strong: rgba(30, 34, 42, 1);
  --border-nav: rgba(49, 49, 49, 0.95);
  --border-top-soft: rgba(255, 255, 255, 0.05);
  --border-soft: rgba(255, 255, 255, 0.16);
  --warning: #f1c75b;
  --shadow-strong: 0 20px 48px rgba(0, 0, 0, 0.35);
  --shadow-soft: 2px 2px 4px rgba(0, 0, 0, 0.25);
  --shadow-card: 3px 3px 3px rgba(0, 0, 0, 0.25);
  --radius-panel: 1.875rem;
  --radius-card: 1.5rem;
  --radius-button: 1.5rem;
  --radius-pill: 999px;
  --shell-width: clamp(1000px, 70vw, 1320px);
  --shell-gutter: 2rem;
  --shell-gutter-mobile: 1rem;
  --motion-duration-fast: 180ms;
  --motion-raise-nav: -1px;
  --motion-raise-button: -2px;
  --size-header-min-height: 7rem;
  --size-brand-gap: clamp(1rem, 4vw, 3rem);
  --size-brand-logo: clamp(3.5rem, 7vw, 5.9rem);
  --size-brand-title: clamp(2rem, 4.4vw, 3.3rem);
  --size-brand-tagline: clamp(0.92rem, 1.25vw, 1.12rem);
  --font-lang-switch: var(--font-display);
  --size-lang-switch: 1.25rem;
  --font-weight-lang-active: 700;
  --font-weight-lang-inactive: 500;
  --text-lang-active: var(--text-primary);
  --text-lang-inactive: #c6cfde;
  --text-lang-divider: #d6deeb;
  --space-header-inline: clamp(1rem, 2.5vw, 2rem);
  --space-header-bottom: 0.35rem;
  --size-menu-toggle: 2.875rem;
  --size-menu-icon-width: 1.9rem;
  --size-menu-icon-height: 0.22rem;
  --offset-menu-icon: 0.5rem;
  --size-nav-gap: clamp(1rem, 4vw, 3.3rem);
  --size-nav-link-font: 1.125rem;
  --size-nav-link-min-width: 14.5rem;
  --size-nav-link-min-height: 1.7rem;
  --space-nav-padding: 0.45rem 0 1.5rem;
  --space-nav-link-padding: 0.1rem 1rem;
  --size-page-eyebrow: clamp(1.12rem, 1.6vw, 1.5rem);
  --size-body-large: clamp(1rem, 1.18vw, 1.25rem);
  --size-hero-title-gap: 1.35rem;
  --size-hero-grid: minmax(.0, 1.2fr) minmax(12rem, 28rem);
  --size-hero-grid-gap: 3rem;
  --size-hero-copy-max-width: 34rem;
  --size-hero-panel-min-height: 48.5rem;
  --space-hero-panel-padding: 1.625rem 3.75rem 2rem;
  --space-panel-padding: 2rem 2.25rem 2.5rem;
  --size-section-label: 1.25rem;
  --size-feed-image-min-height: 12.6rem;
  --size-feed-bezel: 3px;
  --size-feed-title: 0.92rem;
  --size-feed-text: 0.88rem;
  --size-cta-image-width: 14.4rem;
  --space-button-padding: 0.85rem 1.6rem;
  --size-cta-min-width: 13rem;
  --size-cta-min-height: 4.25rem;
  --size-microcopy: 0.9rem;
  --size-disclaimer: 1.25rem;
  --size-content-intro-max-width: 44rem;
  --size-content-intro: 1.05rem;
  --space-card-padding: 1.5rem;
  --size-card-title: 1.15rem;
  --size-card-eyebrow: 0.85rem;
  --size-xeno-visual-width: 11.5rem;
  --size-xeno-visual-height: 14rem;
  --size-xeno-visual-caption: 0.72rem;
  --space-list-indent: 1.25rem;
  --space-list-gap: 0.35rem;
  --size-terminal-panel-min-height: 59rem;
  --size-terminal-screen-max-width: 46rem;
  --size-terminal-status: 0.95rem;
  --size-terminal-buttons-gap: 1.65rem;
  --size-terminal-option-min-width: 11.5rem;
  --size-terminal-option-min-height: 4.75rem;
  --size-placeholder-label: 0.95rem;
  --size-placeholder-message: clamp(2.4rem, 6vw, 4.75rem);
  --size-placeholder-subcopy: 1rem;
  --size-footer-text: 0.95rem;
  --space-footer-padding-block: var(--space-4);
  --space-footer-padding-inline: var(--space-6);
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
}

@view-transition {
  navigation: auto;
}

::view-transition-old(root) {
  animation: site-page-fade-out 120ms ease-out both;
}

::view-transition-new(root) {
  animation: site-page-fade-in 160ms ease-in both;
}

@keyframes site-page-fade-out {
  to {
    opacity: 0;
  }
}

@keyframes site-page-fade-in {
  from {
    opacity: 0;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

html::-webkit-scrollbar,
body::-webkit-scrollbar {
  display: none;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: var(--text-primary);
  font-family: var(--font-display);
  letter-spacing: var(--tracking-base);
  background-color: var(--bg);
  scrollbar-width: none;
  -ms-overflow-style: none;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}

p,
h1,
h2,
h3,
ul {
  margin: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.shell {
  width: min(calc(100% - var(--shell-gutter)), var(--shell-width));
  margin: 0 auto;
}

.site-background {
  position: fixed;
  inset: 0;
  z-index: -2;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(ellipse 140% 78% at 50% 0%, rgba(33, 72, 91, 0.54), transparent 58%),
    linear-gradient(var(--bg-overlay-top), var(--bg-overlay-bottom));
}

.site-background::before,
.site-background::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.site-background::before {
  background: radial-gradient(ellipse 150% 72% at 50% 50%, rgba(111, 231, 255, 0.05), transparent 65%);
}

.site-background::after {
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.12), transparent 24%, transparent 76%, rgba(0, 0, 0, 0.28));
}

.site-background__layer {
  position: absolute;
  inset: -18vh -12vw -16vh;
  will-change: transform;
}

.site-background__layer--far {
  transform: translate3d(0, var(--bg-layer-far-offset), 0);
}

.site-background__layer--midfar {
  transform: translate3d(0, var(--bg-layer-midfar-offset), 0);
}

.site-background__layer--mid {
  transform: translate3d(0, var(--bg-layer-mid-offset), 0);
}

.site-background__layer--near {
  transform: translate3d(0, var(--bg-layer-near-offset), 0);
}

.site-background__star {
  position: absolute;
  inline-size: var(--star-size, 2px);
  block-size: var(--star-size, 2px);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  opacity: var(--star-opacity, 1);
  will-change: transform;
}

.site-background__star--twinkle {
  animation: star-twinkle var(--star-twinkle-duration, 0.25s) linear infinite;
  animation-delay: var(--star-twinkle-delay, 0s);
}

@keyframes star-twinkle {
  0%,
  100% {
    opacity: var(--star-opacity-min, var(--star-opacity, 1));
  }

  50% {
    opacity: var(--star-opacity-max, var(--star-opacity, 1));
  }
}

/* Header - branding */

.site-header {
  background-color: transparent;
}

.site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  min-height: var(--size-header-min-height);
  padding-block: var(--space-2);
  padding-inline: var(--space-header-inline);
  padding-bottom: var(--space-header-bottom);
  background-color: var(--surface-strong);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--size-brand-gap);
  flex: 1;
  min-width: 0;
}

.brand__logo {
  width: var(--size-brand-logo);
  flex-shrink: 0;
}

.brand__copy {
  position: absolute;
  inset-inline-start: 50%;
  transform: translateX(-50%);
  display: grid;
  justify-items: center;
  gap: var(--space-2);
  width: max-content;
  max-width: calc(100% - (2 * var(--size-brand-logo)) - (2 * var(--space-header-inline)));
}

.brand__title {
  font-size: var(--size-brand-title);
  line-height: 1;
  text-shadow: var(--shadow-soft);
}

.brand__tagline {
  font-size: var(--size-brand-tagline);
  text-align: center;
  text-shadow: var(--shadow-soft);
}

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

.lang-switch {
  display: none;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-lang-switch);
  font-size: var(--size-lang-switch);
  white-space: nowrap;
}

.lang-switch__item {
  color: var(--text-lang-inactive);
  font-weight: var(--font-weight-lang-inactive);
}

.lang-switch__item--active {
  color: var(--text-lang-active);
  font-weight: var(--font-weight-lang-active);
}

.lang-switch__divider {
  color: var(--text-lang-divider);
}

.background-music-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  min-height: 2.4rem;
  padding: 0.35rem 0.2rem;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.93rem;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    color var(--motion-duration-fast) ease,
    text-shadow var(--motion-duration-fast) ease;
}

.site-header__meta .background-music-switch {
  position: absolute;
  inset-inline-end: calc(clamp(1rem, 2.4vw, 2rem) - 10px);
  inset-block-start: 20px;
}

.background-music-switch--terminal {
  position: absolute;
  inset-inline-end: -10px;
  inset-block-start: -10px;
}

.background-music-switch__state {
  display: inline-block;
  inline-size: 3ch;
  text-align: start;
  color: var(--text-muted);
  font-weight: 700;
}

.background-music-switch[data-audio-enabled="true"] {
  color: rgba(111, 231, 255, 0.78);
}

.background-music-switch[data-audio-enabled="true"] .background-music-switch__state {
  color: var(--accent);
  text-shadow: 0 0 0.65rem rgba(111, 231, 255, 0.48);
}

.background-music-switch:focus-visible {
  color: var(--text-primary);
  text-shadow: 0 0 0.78rem rgba(111, 231, 255, 0.62);
}

.background-music-switch:focus-visible {
  outline: 1px solid rgba(111, 231, 255, 0.7);
  outline-offset: 0.18rem;
}

@media (hover: hover) {
  .background-music-switch:hover {
    color: var(--text-primary);
    text-shadow: 0 0 0.78rem rgba(111, 231, 255, 0.62);
  }

  .background-music-switch:hover .background-music-switch__state {
    color: var(--accent);
    text-shadow: 0 0 0.82rem rgba(111, 231, 255, 0.7);
  }
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: var(--size-menu-toggle);
  height: var(--size-menu-toggle);
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
}

.menu-toggle span {
  position: absolute;
  width: var(--size-menu-icon-width);
  height: var(--size-menu-icon-height);
  border-radius: var(--radius-pill);
  background-color: currentColor;
  transition:
    transform var(--motion-duration-fast) ease,
    opacity var(--motion-duration-fast) ease;
}

.menu-toggle span:nth-child(1) {
  transform: translateY(calc(var(--offset-menu-icon) * -1));
}

.menu-toggle span:nth-child(3) {
  transform: translateY(var(--offset-menu-icon));
}

body.nav-open .menu-toggle span:nth-child(1) {
  transform: rotate(45deg);
}

body.nav-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}

body.nav-open .menu-toggle span:nth-child(3) {
  transform: rotate(-45deg);
}

/* Navigation - links */

.site-nav {
  background-color: transparent;
}

.site-nav .shell {
  background-color: var(--surface-strong);
  border-top: 1px solid var(--border-top-soft);
}

.site-nav__list {
  display: flex;
  justify-content: center;
  gap: var(--size-nav-gap);
  padding: var(--space-nav-padding);
  list-style: none;
}

.site-nav__list a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--size-nav-link-min-width);
  min-height: var(--size-nav-link-min-height);
  padding: var(--space-nav-link-padding);
  border: 1px solid var(--border-nav);
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.25);
  font-size: var(--size-nav-link-font);
  color: var(--text-primary);
  background-color: transparent;
  transition:
    color var(--motion-duration-fast) ease,
    border-color var(--motion-duration-fast) ease,
    background-color var(--motion-duration-fast) ease,
    transform var(--motion-duration-fast) ease;
}

.site-nav__list a:hover,
.site-nav__list a:focus-visible,
.site-nav__list a[aria-current="page"] {
  background-color: color-mix(in srgb, var(--surface-soft) 32%, transparent);
  border-color: var(--accent-soft);
  color: var(--text-primary);
  transform: translateY(var(--motion-raise-nav));
}

/* Main - page shell */

.page-main {
  padding-bottom: 0;
}

.hero-panel,
.content-panel,
.terminal-panel {
  background-color: var(--surface);
  box-shadow: var(--shadow-strong);
}

.hero-panel {
  min-height: var(--size-hero-panel-min-height);
  padding: var(--space-hero-panel-padding);
}

.page-home .hero-panel {
  min-height: auto;
  padding-top: 1.2rem;
  padding-bottom: 1.5rem;
}

.page-main__header {
  display: grid;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
  justify-items: center;
  width: 100%;
  text-align: center;
}

.page-main__eyebrow {
  margin-bottom: 0;
  font-size: var(--size-page-eyebrow);
  font-weight: 700;
  text-align: center;
  color: var(--text-primary);
  text-shadow: var(--shadow-soft);
}

.page-main__intro {
  max-width: var(--size-content-intro-max-width);
  margin: 0 auto;
  font-size: var(--size-content-intro);
  line-height: 1.5;
  text-align: center;
  color: var(--text-secondary);
}

.hero-panel__eyebrow,
.page-eyebrow {
  margin-bottom: var(--space-10);
  font-size: var(--size-page-eyebrow);
  font-weight: 700;
  text-align: center;
  color: var(--text-primary);
  text-shadow: var(--shadow-soft);
}

.hero-panel__eyebrow {
  margin-bottom: 1.5rem;
}

.hero-panel__grid {
  display: grid;
  grid-template-columns: var(--size-hero-grid);
  gap: var(--size-hero-grid-gap);
  align-items: start;
}

.hero-copy {
  max-width: var(--size-hero-copy-max-width);
  padding-top: 0;
}

.hero-copy,
.protocol-grid,
.xenopedia-grid,
.log-grid,
.terminal-case {
  color: var(--text-secondary);
  font-size: var(--size-body-large);
  line-height: 1.3;
}

.hero-copy p + p,
.protocol-card p + p,
.terminal-case p + p,
.log-entry p + p {
  margin-top: var(--size-hero-title-gap);
}

.hero-copy__lead,
.protocol-card h2,
.xeno-card h2,
.log-entry h2,
.terminal-panel h2 {
  color: var(--text-primary);
}

.hero-copy__lead {
  font-size: 1.3em;
}

.hero-copy__lead + p {
  margin-top: var(--size-hero-title-gap);
}

.station-feed__label,
.section-title,
.terminal-panel__label {
  font-size: var(--size-section-label);
  font-weight: 700;
  text-align: center;
  color: var(--text-primary);
}

.station-feed {
  display: grid;
  grid-template-rows: auto auto minmax(5.75rem, auto);
  align-self: start;
  min-height: 22.75rem;
}

.station-feed__media {
  position: relative;
  margin: var(--space-3) 0 0;
  aspect-ratio: 16 / 9;
  padding: var(--size-feed-bezel);
  min-height: calc(var(--size-feed-image-min-height) + (var(--size-feed-bezel) * 2));
  overflow: hidden;
  border: 1px solid rgba(231, 236, 245, 0.18);
  border-radius: var(--radius-panel);
  background:
    linear-gradient(145deg, var(--surface-metal-light) 0%, var(--surface-metal-mid) 48%, var(--surface-metal-dark) 100%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.42),
    inset 0 -1px 0 rgba(26, 30, 38, 0.5),
    0 0 4px rgba(255, 255, 255, 0.05);
}

.station-feed__media::after {
  content: "";
  position: absolute;
  inset: var(--size-feed-bezel);
  border-radius: calc(var(--radius-panel) - var(--size-feed-bezel));
  background: linear-gradient(135deg, rgba(12, 16, 24, 0.18), rgba(28, 34, 44, 0.12));
  opacity: 0;
  transition: opacity var(--motion-duration-fast) ease;
  pointer-events: none;
  z-index: 2;
}

.station-feed__noise,
.station-feed__media [data-feed-image] {
  position: absolute;
  inset: var(--size-feed-bezel);
  width: calc(100% - (var(--size-feed-bezel) * 2));
  height: calc(100% - (var(--size-feed-bezel) * 2));
  border-radius: calc(var(--radius-panel) - var(--size-feed-bezel));
  object-fit: cover;
}

.station-feed__noise {
  z-index: 1;
  opacity: 0;
}

.js .station-feed__media,
.js .station-feed__content {
  transition: opacity var(--motion-duration-fast) ease;
}

.js .station-feed[data-loading="true"] .station-feed__noise {
  opacity: 1;
}

.js .station-feed[data-loading="true"] .station-feed__media::after {
  opacity: 1;
}

.js .station-feed[data-loading="true"] .station-feed__content {
  opacity: 0;
}

.js .station-feed[data-transitioning="true"] .station-feed__media,
.js .station-feed[data-transitioning="true"] .station-feed__content {
  opacity: 0;
}

.station-feed__media [data-feed-image] {
  min-height: calc(var(--size-feed-image-min-height) - (var(--size-feed-bezel) * 2));
  opacity: 0.82;
  transition: opacity var(--motion-duration-fast) ease;
  z-index: 0;
}

.js .station-feed[data-loading="true"] .station-feed__media [data-feed-image] {
  opacity: 0;
}

.station-feed__content {
  display: grid;
  align-content: start;
  margin-top: var(--space-4);
  min-height: 5.75rem;
}

.js .station-feed[data-loading="true"] .station-feed__title,
.js .station-feed[data-loading="true"] .station-feed__text {
  color: color-mix(in srgb, var(--text-secondary) 82%, transparent);
}

.station-feed__title {
  font-size: var(--size-feed-title);
  line-height: 1.35;
  overflow: hidden;
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.station-feed__text {
  margin-top: 0.5rem;
  font-size: var(--size-feed-text);
  line-height: 1.38;
  overflow: hidden;
  display: -webkit-box;
  line-clamp: 3;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.hero-panel__actions {
  display: grid;
  justify-items: center;
  gap: calc(var(--space-5) * 0.9);
  margin-top: calc(var(--space-8) * 0.9);
}

.cta-button,
.terminal-option,
.inline-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-button-padding);
  border: 1px solid var(--accent-soft);
  border-radius: var(--radius-button);
  color: var(--text-primary);
  background-color: var(--surface-soft);
  box-shadow: var(--shadow-soft);
  transition:
    transform var(--motion-duration-fast) ease,
    background-color var(--motion-duration-fast) ease,
    border-color var(--motion-duration-fast) ease;
}

.cta-button {
  min-width: 0;
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  text-align: center;
}

.cta-button img {
  width: min(100%, var(--size-cta-image-width));
  height: auto;
  filter: drop-shadow(0 0 0 rgba(111, 231, 255, 0));
  will-change: transform, filter;
  transition:
    transform var(--motion-duration-fast) ease,
    filter var(--motion-duration-fast) ease;
}

.terminal-option:hover,
.terminal-option:focus-visible,
.inline-button:hover,
.inline-button:focus-visible {
  transform: translateY(var(--motion-raise-button));
  background-color: var(--surface-soft-hover);
  border-color: var(--accent);
}

.cta-button:hover img,
.cta-button:focus-visible img {
  transform: scale(1.015);
  filter:
    brightness(1.06)
    saturate(1.12)
    contrast(1.04)
    drop-shadow(0 0 2px rgba(198, 247, 255, 0.34))
    drop-shadow(0 0 6px rgba(111, 231, 255, 0.2))
    drop-shadow(0 0 12px rgba(66, 214, 255, 0.12));
}

.hero-panel__microcopy,
.terminal-panel__microcopy {
  font-size: var(--size-microcopy);
  color: var(--text-primary);
}

.hero-panel__disclaimer {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-3);
  margin-top: calc(var(--space-6) * 0.9);
  font-size: var(--size-disclaimer);
  text-align: center;
  color: var(--text-primary);
}

.hero-panel__disclaimer span {
  color: var(--warning);
}

/* Main - content pages */

.content-panel,
.terminal-panel {
  margin-top: 0;
}

.content-panel {
  padding: var(--space-hero-panel-padding);
  padding-top: 1.2rem;
  min-height: var(--size-hero-panel-min-height);
}

.terminal-panel {
  padding: var(--space-panel-padding);
}

.content-panel__intro,
.terminal-panel__intro {
  max-width: var(--size-content-intro-max-width);
  margin: 0 auto var(--space-10);
  font-size: var(--size-content-intro);
  line-height: 1.5;
  text-align: center;
  color: var(--text-secondary);
}

.page-main__header .page-main__eyebrow {
  margin-bottom: 0;
}

.page-main__header .page-main__intro {
  width: 100%;
  max-width: none;
  margin: 0;
}

.protocol-grid,
.xenopedia-grid,
.log-grid {
  display: grid;
  gap: var(--space-6);
}

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

.page[data-page="protocols"] .page-main__header {
  justify-items: center;
  text-align: center;
}

.protocol-card,
.xeno-card,
.log-entry,
.terminal-case,
.terminal-status {
  padding: var(--space-card-padding);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  background-color: var(--surface-card-soft);
  box-shadow: 3px 3px 3px rgba(0, 0, 0, 0.16);
}

.protocol-card h2,
.xeno-card h2,
.log-entry h2 {
  margin-left: 5%;
  max-width: 95%;
  padding-left: 0;
  text-align: left;
}

.protocol-card h2,
.xeno-card h2,
.log-entry h2,
.terminal-case h2,
.terminal-status h2 {
  margin-bottom: var(--space-4);
  font-size: var(--size-card-title);
}

.protocol-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-soft);
  border-radius: calc(var(--radius-card) - 0.35rem);
}

.protocol-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 40rem;
  background-color: rgba(8, 12, 28, 0.22);
}

.protocol-table th,
.protocol-table td {
  padding: 0.95rem 1rem;
  border-bottom: 1px solid var(--border-soft);
  text-align: left;
  vertical-align: top;
}

.protocol-table th {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background-color: rgba(15, 25, 52, 0.82);
}

.protocol-table td {
  line-height: 1.45;
  color: var(--text-secondary);
}

.protocol-table tbody tr:last-child td {
  border-bottom: 0;
}

.protocol-table td:nth-child(1) {
  width: 24%;
  color: var(--text-primary);
}

.protocol-table td:nth-child(2) {
  width: 22%;
  color: var(--accent-secondary);
  white-space: nowrap;
}

.protocol-list,
.log-meta,
.footer-list,
.terminal-case__answers {
  padding-left: var(--space-list-indent);
}

.protocol-list li + li,
.log-meta li + li,
.footer-list li + li,
.terminal-case__answers li + li {
  margin-top: var(--space-list-gap);
}

.xenopedia-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.xenopedia-status {
  grid-column: 1 / -1;
  padding: 1.15rem 1.25rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  background-color: var(--surface-card-soft);
  color: var(--text-primary);
  text-align: center;
  line-height: 1.5;
}

.xenopedia-status--error {
  border-color: color-mix(in srgb, var(--warning) 50%, var(--border-soft));
}

.xenopedia-status--empty {
  color: var(--text-secondary);
}

/* Xenopedia - interactive 3D card tilt */

.xeno-card {
  --xeno-tilt-x: 0deg;
  --xeno-tilt-y: 0deg;
  display: flex;
  position: relative;
  flex-direction: column;
  align-items: start;
  gap: 1rem;
  isolation: isolate;
  overflow: hidden;
  transform-style: preserve-3d;
  will-change: transform, box-shadow;
  transform:
    perspective(1200px)
    rotateX(var(--xeno-tilt-x))
    rotateY(var(--xeno-tilt-y))
    translateZ(0);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease;
}

.xeno-card__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--size-xeno-visual-width);
  align-items: start;
  gap: var(--space-6);
  width: 100%;
}

.xeno-card__copy {
  display: grid;
  align-content: start;
  gap: var(--space-4);
}

.xeno-card__header,
.xeno-card__field {
  margin-top: 0;
  margin-bottom: 0;
}

.xeno-card__header,
.xeno-card__body,
.xeno-card__visual {
  position: relative;
  z-index: 1;
  transform: translateZ(18px);
}

.xeno-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: 100%;
  padding: 0.95rem 1rem;
  border: 1px solid var(--border-soft);
  border-radius: calc(var(--radius-card) - 0.35rem);
  background-color: rgba(15, 25, 52, 0.82);
}

.xeno-card__field {
  display: grid;
  gap: 0.45rem;
}

.xeno-card__name {
  margin: 0;
  font-size: calc(var(--size-card-title) * 1.5);
  color: var(--accent);
}

.xeno-card__label {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-left: 5%;
  max-width: 95%;
  text-align: left;
  color: var(--text-muted);
}

.xeno-card__eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: var(--size-card-eyebrow);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  white-space: nowrap;
}

.xeno-card__text {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.xeno-card__visual {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  justify-items: center;
}

.xeno-card__visual-frame {
  display: block;
  width: 100%;
  min-height: 0;
  aspect-ratio: 2 / 3;
  padding: 0;
  border: 1px solid var(--border-soft);
  border-radius: calc(var(--radius-card) - 0.35rem);
  overflow: hidden;
  background: transparent;
  box-shadow: none;
}

@media (hover: hover) and (pointer: fine) {
  .xeno-card[data-hover="true"] {
    border-color: color-mix(in srgb, var(--accent) 34%, var(--border-soft));
    box-shadow:
      0 18px 34px rgba(0, 0, 0, 0.22),
      0 0 24px rgba(111, 231, 255, 0.08);
  }

  .xeno-card[data-hover="true"] .xeno-card__visual-frame {
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.08),
      0 12px 24px rgba(0, 0, 0, 0.18);
  }
}

@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation: none;
  }

  .xeno-card {
    transition: none;
  }

  .xeno-card {
    transform: none;
  }
}

.xeno-card__visual-image {
  display: block;
  width: 100%;
  height: 100%;
  max-height: none;
  object-fit: contain;
  object-position: center;
}

.xeno-card__visual-frame.is-missing .xeno-card__visual-image {
  display: none;
}

.xeno-card__visual-art {
  width: 100%;
  min-height: var(--size-xeno-visual-height);
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
}

.xeno-card__visual-art--glorp {
  background-image:
    radial-gradient(circle at 50% 38%, rgba(111, 231, 255, 0.95) 0 10%, transparent 11%),
    radial-gradient(circle at 35% 58%, rgba(86, 194, 255, 0.7) 0 9%, transparent 10%),
    radial-gradient(circle at 66% 63%, rgba(86, 194, 255, 0.72) 0 8%, transparent 9%),
    radial-gradient(ellipse at 50% 64%, rgba(95, 137, 255, 0.34) 0 28%, transparent 29%),
    linear-gradient(180deg, rgba(13, 23, 48, 0.18), rgba(7, 12, 28, 0.3));
}

.xeno-card__visual-art--zaxer {
  background-image:
    linear-gradient(135deg, transparent 0 18%, rgba(111, 231, 255, 0.88) 18% 22%, transparent 22% 34%, rgba(111, 231, 255, 0.56) 34% 37%, transparent 37%),
    linear-gradient(160deg, transparent 0 36%, rgba(160, 172, 255, 0.72) 36% 40%, transparent 40% 52%, rgba(111, 231, 255, 0.46) 52% 55%, transparent 55%),
    radial-gradient(circle at 68% 30%, rgba(111, 231, 255, 0.4), transparent 24%),
    linear-gradient(180deg, rgba(12, 18, 40, 0.16), rgba(7, 12, 28, 0.3));
}

.xeno-card__visual-art--plunk {
  background-image:
    radial-gradient(circle at 52% 35%, rgba(255, 220, 110, 0.9) 0 8%, transparent 9%),
    radial-gradient(circle at 46% 54%, rgba(255, 138, 110, 0.85) 0 13%, transparent 14%),
    radial-gradient(circle at 65% 62%, rgba(255, 220, 110, 0.76) 0 7%, transparent 8%),
    radial-gradient(circle at 34% 68%, rgba(255, 138, 110, 0.7) 0 6%, transparent 7%),
    linear-gradient(180deg, rgba(28, 18, 20, 0.18), rgba(7, 12, 28, 0.3));
}

.xeno-card__visual-art--vrex {
  background-image:
    radial-gradient(circle at 50% 26%, rgba(168, 255, 180, 0.62) 0 8%, transparent 9%),
    linear-gradient(180deg, transparent 0 26%, rgba(168, 255, 180, 0.84) 26% 30%, transparent 30% 42%, rgba(168, 255, 180, 0.76) 42% 46%, transparent 46%),
    linear-gradient(120deg, transparent 0 42%, rgba(111, 231, 255, 0.46) 42% 46%, transparent 46%),
    linear-gradient(240deg, transparent 0 44%, rgba(111, 231, 255, 0.38) 44% 48%, transparent 48%),
    linear-gradient(180deg, rgba(12, 20, 34, 0.16), rgba(7, 12, 28, 0.3));
}

.xeno-card__visual-caption {
  font-size: var(--size-xeno-visual-caption);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.xeno-card__eyebrow,
.log-entry__eyebrow {
  margin-bottom: var(--space-3);
  font-size: var(--size-card-eyebrow);
  text-transform: uppercase;
  color: var(--accent);
}

.log-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

/* Main - terminal page */

.terminal-panel {
  min-height: var(--size-terminal-panel-min-height);
}

.terminal-screen {
  display: grid;
  gap: var(--space-8);
  max-width: var(--size-terminal-screen-max-width);
  margin: 0 auto;
}

.terminal-status {
  font-size: var(--size-terminal-status);
  color: var(--text-primary);
}

.terminal-actions {
  display: grid;
  justify-items: center;
  gap: var(--space-4);
}

.terminal-actions__label {
  color: var(--text-primary);
}

.terminal-actions__buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--size-terminal-buttons-gap);
}

.terminal-option {
  min-width: var(--size-terminal-option-min-width);
  min-height: var(--size-terminal-option-min-height);
}

.page-terminal-entrance,
.page-terminal-session {
  overflow-x: hidden;
}

.page-terminal-entrance .page-main {
  padding-bottom: 0;
}

.terminal-entrance-stage,
.terminal-session-stage {
  display: flex;
  align-items: stretch;
  justify-content: center;
  min-height: 100vh;
  padding: 0;
}

.terminal-entrance-shell,
.terminal-session-shell {
  display: grid;
  grid-template-rows: auto auto auto 1fr;
  align-content: start;
  justify-items: center;
  gap: 5px;
  min-height: 100vh;
  padding: 30px clamp(1rem, 2.4vw, 2rem) 0;
  background-color: var(--surface);
  box-shadow: var(--shadow-soft);
}

.terminal-session-shell {
  min-width: 0;
}

.page-terminal-session .terminal-monitor,
.page-terminal-session .terminal-monitor__frame,
.page-terminal-session .terminal-monitor__bezel,
.page-terminal-session .terminal-monitor__screen,
.terminal-answer-form {
  min-width: 0;
  max-width: 100%;
}

.terminal-entrance-header,
.terminal-entrance-title {
  margin: 0;
}

.terminal-entrance-header {
  display: flex;
  position: relative;
  justify-content: center;
  width: 100%;
}

.terminal-entrance-title {
  display: flex;
  justify-content: center;
  width: 100%;
}

.terminal-entrance-shell__logo,
.terminal-session-shell__logo {
  width: 40%;
  filter: drop-shadow(0 1px 0 rgba(0, 0, 0, 0.38));
}

.terminal-monitor {
  width: 90%;
}

.terminal-monitor__frame {
  position: relative;
  aspect-ratio: 3 / 1.9;
  padding: clamp(1rem, 1.6vw, 1.35rem);
  border-radius: 2rem;
  background:
    linear-gradient(140deg, rgba(136, 142, 152, 0.34), rgba(46, 50, 58, 0.48) 42%, rgba(21, 24, 29, 0.52) 78%, rgba(102, 108, 116, 0.28)),
    url("assets/images/pattern-metal.webp") center / 240px 240px repeat,
    linear-gradient(180deg, rgba(70, 75, 83, 0.96), rgba(35, 39, 45, 0.98));
  border: 1px solid rgba(216, 225, 240, 0.18);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    inset 0 -1px 0 rgba(5, 7, 10, 0.45),
    var(--shadow-soft);
}

.terminal-monitor__frame::before,
.terminal-monitor__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
}

.terminal-monitor__frame::before {
  background:
    radial-gradient(circle at 16% 18%, rgba(255, 255, 255, 0.16), transparent 18%),
    radial-gradient(circle at 84% 78%, rgba(255, 255, 255, 0.08), transparent 16%),
    repeating-linear-gradient(108deg, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 22px);
  mix-blend-mode: screen;
  opacity: 0.45;
}

.terminal-monitor__frame::after {
  inset: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.terminal-monitor__bezel {
  position: relative;
  height: 100%;
  padding: clamp(0.8rem, 1.4vw, 1rem);
  border-radius: 1.45rem;
  background:
    linear-gradient(160deg, rgba(21, 24, 31, 0.96), rgba(45, 51, 61, 0.92) 46%, rgba(12, 14, 18, 0.98)),
    radial-gradient(circle at 50% 12%, rgba(140, 151, 168, 0.08), transparent 50%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    inset 0 0 0 1px rgba(0, 0, 0, 0.42);
}

.terminal-monitor__screen {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  height: 100%;
  min-height: 0;
  padding: clamp(1.5rem, 3.8vw, 3rem);
  border-radius: 1rem;
  background:
    radial-gradient(circle at 50% 18%, rgba(124, 255, 252, 0.16), transparent 30%),
    linear-gradient(180deg, rgba(1, 18, 24, 0.96), rgba(2, 12, 18, 0.98));
  border: 1px solid rgba(132, 215, 223, 0.18);
  box-shadow:
    inset 0 0 32px rgba(0, 0, 0, 0.56),
    inset 0 0 65px rgba(0, 255, 229, 0.08),
    0 3px 3px rgba(0, 0, 0, 0.16);
}

.terminal-monitor__screen::before,
.terminal-monitor__screen::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.terminal-monitor__screen::before {
  background:
    repeating-linear-gradient(180deg, rgba(185, 255, 245, 0.06) 0 1px, transparent 1px 4px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.12), transparent 12%, transparent 88%, rgba(0, 0, 0, 0.14));
  opacity: 0.48;
}

.terminal-monitor__screen::after {
  background:
    radial-gradient(circle at 50% 50%, transparent 56%, rgba(0, 0, 0, 0.22) 100%),
    linear-gradient(180deg, rgba(190, 255, 250, 0.05), rgba(0, 0, 0, 0.12));
}

.terminal-monitor__header,
.terminal-monitor__body {
  position: relative;
  z-index: 1;
}

.terminal-monitor__header {
  padding-bottom: 1.2rem;
  border-bottom: 1px solid rgba(120, 255, 245, 0.18);
}

.terminal-monitor__eyebrow,
.terminal-monitor__intro {
  color: #9efdf3;
  text-shadow:
    0 0 10px rgba(97, 255, 237, 0.24),
    0 0 20px rgba(97, 255, 237, 0.08);
}

.terminal-monitor__eyebrow {
  font-size: clamp(1rem, 1.5vw, 1.4rem);
  line-height: 1.35;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.terminal-monitor__body {
  display: grid;
  align-content: center;
  flex: 1;
  min-height: 0;
}

.terminal-monitor__intro {
  max-width: 38rem;
  font-size: clamp(1.08rem, 1.45vw, 1.4rem);
  line-height: 1.7;
}

.terminal-entrance-actions,
.terminal-session-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.85rem;
  width: 90%;
  margin-top: 14px;
  padding-bottom: 0.75rem;
}

.terminal-entrance-actions__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.85rem;
  width: 100%;
  margin: 0;
  padding: 0;
  list-style: none;
}

.terminal-clearance,
.terminal-session-option {
  position: relative;
  display: grid;
  place-items: center;
  isolation: isolate;
  min-width: 13rem;
  min-height: 3.5rem;
  padding: 0.92rem 1.25rem;
  border: 1px solid rgba(8, 11, 15, 0.96);
  border-radius: 0.9rem;
  color: #9efdf3;
  background:
    linear-gradient(180deg, rgba(37, 44, 53, 0.96), rgba(18, 22, 29, 0.98));
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.95),
    inset 0 1px 0 rgba(255, 255, 255, 0.16),
    inset 0 -1px 0 rgba(0, 0, 0, 0.52);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-shadow: 0 0 0 transparent;
  cursor: pointer;
  overflow: hidden;
  text-decoration: none;
  font: inherit;
}

.terminal-clearance {
  align-content: center;
  gap: 0;
  min-height: 3.75rem;
  padding-block: 0.72rem;
  text-align: center;
}

.terminal-clearance__label {
  font-size: 1rem;
  font-weight: 700;
}

.terminal-clearance__rank,
.terminal-clearance__description {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.terminal-clearance::before,
.terminal-clearance::after,
.terminal-session-option::before,
.terminal-session-option::after {
  content: "";
  position: absolute;
  pointer-events: none;
  border-radius: inherit;
}

.terminal-clearance::before,
.terminal-session-option::before {
  inset: 0.22rem;
  border-radius: 0.72rem;
  background:
    linear-gradient(180deg, rgba(73, 84, 97, 0.92), rgba(28, 34, 43, 0.96));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.14),
    inset 0 -1px 0 rgba(0, 0, 0, 0.46);
  z-index: -2;
}

.terminal-clearance::after,
.terminal-session-option::after {
  inset: 0.48rem;
  border-radius: 0.56rem;
  background:
    linear-gradient(180deg, rgba(5, 22, 26, 0.98), rgba(3, 16, 20, 1));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    inset 0 0 0 1px rgba(0, 0, 0, 0.72);
  z-index: -1;
}

.terminal-clearance:hover,
.terminal-clearance:focus-visible,
.terminal-session-option:not(:disabled):hover,
.terminal-session-option:not(:disabled):focus-visible {
  text-shadow:
    0 0 7px currentColor,
    0 0 14px color-mix(in srgb, currentColor 55%, transparent);
}

.terminal-clearance:focus-visible,
.terminal-primary-action:focus-visible,
.terminal-secondary-action:focus-visible,
.terminal-session-option:focus-visible {
  outline: 3px solid #f8fcff;
  outline-offset: 3px;
}

.terminal-session-statusbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
}

.terminal-session-statusbar .terminal-monitor__eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.terminal-session-progress {
  margin: 0;
  color: rgba(158, 253, 243, 0.82);
  font-size: 0.62rem;
  line-height: 1.5;
  letter-spacing: 0.06em;
  text-align: right;
  text-transform: uppercase;
  white-space: nowrap;
}

.terminal-session-content {
  align-content: stretch;
  min-height: 0;
  overflow-y: auto;
  padding-top: 1rem;
  scrollbar-width: none;
}

.terminal-session-content::-webkit-scrollbar {
  display: none;
}

.terminal-session-panel {
  display: grid;
  align-content: start;
  gap: 0.9rem;
  min-height: 0;
}

.terminal-session-panel--loading,
.terminal-session-panel--error {
  align-content: center;
  min-height: 100%;
}

.terminal-session-panel--question {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-height: 100%;
}

.terminal-session-panel--question .terminal-session-prompt {
  margin-top: auto;
}

.terminal-session-panel[hidden],
.terminal-answer-form[hidden],
.terminal-flow-actions [hidden] {
  display: none;
}

.terminal-session-kicker {
  margin: 0;
  color: rgba(158, 253, 243, 0.7);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
}

.terminal-session-state-title,
.terminal-session-prompt,
.terminal-feedback-title,
.terminal-result-score {
  margin: 0;
  color: #c8fffa;
  line-height: 1.35;
  overflow-wrap: anywhere;
  text-shadow: 0 0 14px rgba(97, 255, 237, 0.14);
}

.terminal-session-state-title {
  font-size: clamp(1.4rem, 2.7vw, 2.35rem);
}

.terminal-loading-dots {
  display: inline-block;
  min-width: 10ch;
  letter-spacing: 0.08em;
}

.terminal-session-copy,
.terminal-case-report,
.terminal-feedback-explanation,
.terminal-feedback-diagnosis,
.terminal-result-summary {
  margin: 0;
  color: rgba(232, 238, 247, 0.88);
  line-height: 1.58;
  overflow-wrap: anywhere;
}

.terminal-case-report {
  max-width: 68rem;
  font-size: clamp(1.05rem, 1.35vw, 1.18rem);
  white-space: pre-line;
}

.terminal-session-prompt {
  padding-top: 0.9rem;
  border-top: 1px solid rgba(120, 255, 245, 0.16);
  font-size: clamp(1rem, 1.45vw, 1.3rem);
}

.terminal-screen-options {
  display: grid;
  gap: 0.38rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.terminal-screen-option {
  display: grid;
  grid-template-columns: 5rem minmax(0, 1fr);
  align-items: center;
  gap: 0.65rem;
  min-width: 0;
  padding: 0.48rem 0.62rem;
  border: 1px solid rgba(120, 255, 245, 0.12);
  border-radius: 0.45rem;
  background: rgba(0, 18, 24, 0.42);
}

.terminal-screen-option__index {
  color: rgba(158, 253, 243, 0.7);
  font-size: 0.62rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.terminal-screen-option__text {
  min-width: 0;
  color: rgba(232, 238, 247, 0.92);
  font-size: 0.9rem;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.terminal-screen-option.is-correct {
  border-color: #8ff5b4;
  background: rgba(65, 255, 139, 0.09);
  box-shadow:
    inset 0 0 18px rgba(65, 255, 139, 0.08),
    0 0 8px rgba(65, 255, 139, 0.32),
    0 0 22px rgba(65, 255, 139, 0.22);
  animation: terminal-correct-pulse 1.15s ease-in-out 3;
}

.terminal-screen-option.is-incorrect {
  border-color: #ffb5a9;
  background: rgba(255, 92, 82, 0.08);
  box-shadow:
    inset 0 0 18px rgba(255, 92, 82, 0.07),
    0 0 8px rgba(255, 92, 82, 0.3),
    0 0 20px rgba(255, 92, 82, 0.2);
  animation: terminal-incorrect-pulse 1.15s ease-in-out 3;
}

@keyframes terminal-correct-pulse {
  50% {
    border-color: #c4ffd6;
    box-shadow:
      inset 0 0 24px rgba(65, 255, 139, 0.16),
      0 0 12px rgba(65, 255, 139, 0.56),
      0 0 34px rgba(65, 255, 139, 0.38);
  }
}

@keyframes terminal-incorrect-pulse {
  50% {
    border-color: #ffd0c9;
    box-shadow:
      inset 0 0 24px rgba(255, 92, 82, 0.14),
      0 0 12px rgba(255, 92, 82, 0.52),
      0 0 32px rgba(255, 92, 82, 0.34);
  }
}

.terminal-answer-form {
  display: flex;
  justify-content: center;
  width: 100%;
}

.page-terminal-session .terminal-session-actions {
  flex-wrap: nowrap;
}

.page-terminal-session .terminal-session-option {
  min-height: 3.75rem;
  padding: 0.72rem 1.25rem;
  text-align: center;
  text-transform: uppercase;
}

.terminal-session-option {
  color: #c8fffa;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.terminal-session-option.is-dormant {
  cursor: default;
  opacity: 1;
  pointer-events: none;
  text-shadow: none;
}

@media (prefers-reduced-motion: reduce) {
  .terminal-screen-option.is-correct,
  .terminal-screen-option.is-incorrect {
    animation: none;
  }
}

.terminal-feedback-title[data-correct="true"] {
  color: #8ff5b4;
}

.terminal-feedback-title[data-correct="false"] {
  color: #ffb5a9;
}

.terminal-feedback-diagnosis {
  padding: 0.9rem 1rem;
  border-left: 3px solid rgba(241, 199, 91, 0.72);
  background: rgba(241, 199, 91, 0.07);
}

.terminal-result-score {
  font-size: clamp(2.2rem, 5vw, 4.5rem);
}

.terminal-result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.terminal-result-grid section {
  padding: 0.85rem 1rem;
  border: 1px solid rgba(120, 255, 245, 0.16);
  border-radius: 0.8rem;
  background: rgba(0, 18, 24, 0.46);
}

.terminal-result-grid h4 {
  margin: 0 0 0.55rem;
  color: #9efdf3;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.terminal-result-grid ul {
  display: grid;
  gap: 0.35rem;
  margin: 0;
  padding-left: 1.1rem;
  color: rgba(232, 238, 247, 0.84);
  font-size: 0.84rem;
  line-height: 1.4;
}

.terminal-flow-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.7rem;
  width: 90%;
}

.terminal-primary-action,
.terminal-secondary-action {
  min-height: 2.9rem;
  padding: 0.75rem 1rem;
  border-radius: 0.7rem;
  font: inherit;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
}

.terminal-primary-action {
  justify-self: center;
  border: 1px solid rgba(158, 253, 243, 0.56);
  color: #c8fffa;
  background: linear-gradient(180deg, rgba(12, 55, 59, 0.98), rgba(3, 25, 30, 0.98));
}

.terminal-primary-action:disabled {
  cursor: not-allowed;
  opacity: 0.46;
}

.terminal-secondary-action {
  display: inline-grid;
  place-items: center;
  border: 1px solid rgba(158, 253, 243, 0.2);
  color: rgba(200, 255, 250, 0.82);
  background: rgba(4, 22, 27, 0.8);
}

.research-log {
  display: grid;
  gap: var(--space-6);
}

.research-log__status,
.research-log__empty,
.research-log__controls,
.research-log__confirmation {
  padding: var(--space-card-padding);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-card);
  background: rgba(1, 20, 25, 0.72);
  box-shadow: 3px 3px 3px rgba(0, 0, 0, 0.16);
}

.research-log__status {
  text-align: center;
}

.research-log__status h2,
.research-log__controls h2,
.research-log__confirmation h3 {
  margin: 0 0 var(--space-3);
  color: var(--text-primary);
}

.research-log__announcement:empty {
  display: none;
}

.research-log__announcement {
  margin-top: var(--space-4);
  color: var(--accent);
}

.research-log__empty {
  display: grid;
  justify-items: center;
  gap: var(--space-5);
  text-align: center;
}

.research-log__dashboard {
  display: grid;
  gap: var(--space-6);
}

.research-log__dashboard[hidden],
.research-log__empty[hidden],
.research-log__confirmation[hidden] {
  display: none;
}

.research-log__metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
  margin: 0;
}

.research-log__metrics div {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-5);
  border: 1px solid rgba(120, 255, 245, 0.18);
  border-radius: var(--radius-card);
  text-align: center;
  background: rgba(0, 18, 24, 0.56);
}

.research-log__metrics dt {
  color: var(--text-muted);
  font-size: var(--size-card-eyebrow);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.research-log__metrics dd {
  margin: 0;
  color: var(--text-primary);
  font-size: clamp(1.7rem, 4vw, 3rem);
  font-weight: 700;
}

.research-log__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.research-log__grid .log-entry h2 {
  margin-left: 0;
}

.research-log__list {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding-left: 1.25rem;
  color: var(--text-secondary);
}

.research-log__history-note {
  margin-top: var(--space-4);
  color: var(--text-muted);
  font-size: 0.82rem;
}

.research-log__controls {
  display: grid;
  gap: var(--space-5);
}

.research-log__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.research-log__controls:has(.research-log__confirmation:not([hidden])) > .research-log__actions {
  display: none;
}

.research-log__actions .inline-button {
  font: inherit;
  cursor: pointer;
}

.research-log__actions .inline-button:disabled {
  cursor: not-allowed;
  opacity: 0.38;
  transform: none;
}

.research-log__danger {
  border-color: rgba(255, 181, 169, 0.56);
  color: #ffd2ca;
}

.research-log__confirmation {
  display: grid;
  gap: var(--space-4);
  border-color: rgba(255, 181, 169, 0.38);
  background: rgba(42, 12, 17, 0.7);
}

.research-log__confirmation h3 {
  margin-bottom: 0;
}

/* Footer - links */

.site-footer {
  display: flex;
  flex: 1 0 auto;
  background-color: transparent;
}

.site-footer__inner {
  display: grid;
  align-content: start;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-12);
  min-height: 100%;
  padding-block: var(--space-footer-padding-block);
  padding-inline: var(--space-footer-padding-inline);
  font-size: var(--size-footer-text);
  color: var(--text-secondary);
  background-color: var(--surface-footer);
}

.footer-list {
  margin: 0;
}

/* Responsive - desktop to tablet */

@media (min-width: 2400px) {
  :root {
    --shell-width: 1560px;
    --size-brand-gap: 3.5rem;
    --size-brand-logo: 6.75rem;
    --size-brand-title: 3.75rem;
    --size-brand-tagline: 1.2rem;
    --space-header-inline: 2.5rem;
    --size-nav-gap: 3.75rem;
    --size-nav-link-font: 1.2rem;
    --size-nav-link-min-width: 16rem;
    --size-page-eyebrow: 1.72rem;
    --size-body-large: 1.32rem;
    --size-hero-grid: minmax(.0, 1.2fr) minmax(10rem, 32rem);
    --size-hero-grid-gap: 4rem;
    --size-hero-copy-max-width: 40rem;
    --size-hero-panel-min-height: 56rem;
    --space-hero-panel-padding: 2rem 4.5rem 2.5rem;
    --space-panel-padding: 2.25rem 2.75rem 3rem;
    --size-section-label: 1.4rem;
    --size-feed-image-min-height: 15rem;
    --size-feed-title: 1rem;
    --size-feed-text: 0.96rem;
    --size-cta-image-width: 16.8rem;
    --space-button-padding: 1rem 1.9rem;
    --size-cta-min-width: 15rem;
    --size-cta-min-height: 4.9rem;
    --size-microcopy: 0.98rem;
    --size-disclaimer: 1.35rem;
    --size-content-intro-max-width: 48rem;
    --size-content-intro: 1.12rem;
    --size-card-title: 1.24rem;
    --size-xeno-visual-width: 13rem;
    --size-xeno-visual-height: 15.5rem;
    --size-footer-text: 1.02rem;
    --space-footer-padding-inline: 2rem;
  }
}

@media (max-width: 1199px) {
  :root {
    --size-header-min-height: auto;
    --space-hero-panel-padding: 1.625rem 2rem 2rem;
    --size-hero-grid: 1fr;
    --space-header-inline: 1rem;
    --size-xeno-visual-height: 18rem;
  }

  .site-header__inner {
    padding-block: 1rem;
  }

  .hero-copy,
  .station-feed {
    max-width: none;
  }

  .site-footer__inner,
  .xenopedia-grid,
  .log-grid {
    grid-template-columns: 1fr;
  }

  .xeno-card {
    grid-template-columns: minmax(0, 1fr) var(--size-xeno-visual-width);
  }
}

/* Responsive - mobile layout */

@media (max-width: 767px) {
  :root {
    --shell-width: 100%;
    --shell-gutter: 0rem;
    --size-header-min-height: 6.125rem;
    --size-brand-gap: 0.75rem;
    --size-brand-logo: 3.625rem;
    --size-brand-title: 1.9rem;
    --size-brand-tagline: 0.72rem;
    --space-header-inline: 0.75rem;
    --space-header-bottom: 0.25rem;
    --space-nav-padding: 0.75rem 0 2rem;
    --space-panel-padding: 0.75rem 0.85rem 1.5rem;
    --size-hero-panel-min-height: auto;
    --size-page-eyebrow: 1rem;
    --size-body-large: 0.92rem;
    --size-hero-title-gap: 1rem;
    --size-microcopy: 0.78rem;
    --size-disclaimer: 0.78rem;
    --size-content-intro: 0.92rem;
    --space-card-padding: 1rem;
    --size-xeno-visual-width: 100%;
    --size-xeno-visual-height: 12rem;
    --size-xeno-visual-caption: 0.66rem;
    --size-terminal-buttons-gap: 0.75rem;
    --size-terminal-option-min-width: 6.5rem;
    --size-terminal-option-min-height: 3rem;
    --size-cta-image-width: 10.4rem;
    --space-button-padding: 0.8rem 1rem;
    --space-footer-padding-block: 1rem;
    --space-footer-padding-inline: 1rem;
  }

  .shell {
    width: 100%;
  }

  .site-background {
    opacity: 0.86;
  }

  .site-header,
  .site-nav,
  .page-main,
  .site-footer {
    width: 100%;
  }

  .site-header__inner {
    align-items: center;
    padding: 0.5rem 0.75rem 0.25rem;
  }

  .brand__copy {
    justify-items: center;
    gap: 0.35rem;
    text-align: center;
  }

  .brand__tagline {
    text-align: center;
  }

  .menu-toggle {
    position: relative;
    display: inline-flex;
    flex-shrink: 0;
  }

  .site-nav {
    display: none;
    padding: 0;
  }

  body.nav-open .site-nav {
    display: block;
  }

  .site-nav .shell {
    border-top: 0;
  }

  .site-nav__list {
    margin: 0;
    padding: 0.75rem 0.75rem 1rem;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }

  .site-nav__list a {
    min-width: var(--size-nav-link-min-width);
  }

  .hero-panel__eyebrow,
  .page-eyebrow,
  .page-main__eyebrow {
    margin-bottom: 1.2rem;
    line-height: 1.3;
  }

  .hero-copy {
    padding-top: 0;
  }

  .hero-copy,
  .protocol-grid,
  .xenopedia-grid,
  .log-grid,
  .terminal-case {
    font-size: var(--size-body-large);
  }

  .station-feed {
    display: none;
  }

  .hero-panel__actions {
    margin-top: 1.5rem;
    gap: 0.75rem;
  }

  .cta-button {
    justify-self: center;
  }

  .hero-panel__microcopy,
  .terminal-panel__microcopy,
  .footer-list,
  .terminal-status {
    font-size: var(--size-microcopy);
  }

  .hero-panel__disclaimer {
    gap: 0.35rem;
    margin-top: 1.75rem;
    line-height: 1.4;
  }

  .content-panel__intro,
  .terminal-panel__intro,
  .page-main__intro {
    margin-bottom: 1.5rem;
  }

  .protocol-grid,
  .xenopedia-grid,
  .log-grid,
  .terminal-screen,
  .site-footer__inner {
    gap: 1rem;
  }

  .hero-panel,
  .content-panel,
  .terminal-panel,
  .site-header__inner,
  .site-nav .shell,
  .site-footer__inner,
  .terminal-entrance-shell,
  .terminal-session-shell {
    width: 100%;
    margin: 0;
  }

  .hero-panel,
  .content-panel,
  .terminal-panel,
  .site-footer__inner {
    box-shadow: none;
  }

  .hero-panel,
  .content-panel,
  .terminal-panel {
    padding-left: 0.85rem;
    padding-right: 0.85rem;
  }

  .terminal-entrance-stage,
  .terminal-session-stage {
    padding: 0;
  }

  .terminal-entrance-shell,
  .terminal-session-shell {
    gap: 5px;
    padding: 30px 0 0;
  }

  .site-header__meta {
    gap: 0.4rem;
  }

  .background-music-switch {
    min-width: 2.25rem;
    min-height: 2.5rem;
    padding-inline: 0.2rem;
  }

  .background-music-switch--terminal {
    inset-inline-end: 0;
  }

  .site-header__meta .background-music-switch {
    inset-inline-end: calc(var(--size-menu-toggle) + 0.8rem);
  }

  .background-music-switch__label {
    display: none;
  }

  .page-terminal-session .terminal-session-shell {
    grid-template-rows: auto minmax(0, 1fr) auto auto;
    align-content: stretch;
    height: 100dvh;
    min-height: 100svh;
    padding-bottom: max(0.5rem, env(safe-area-inset-bottom));
    overflow: hidden;
  }

  .terminal-entrance-shell__logo,
  .terminal-session-shell__logo {
    width: 54%;
  }

  .terminal-monitor,
  .terminal-screen {
    width: 100%;
    max-width: none;
  }

  .page-terminal-session .terminal-monitor,
  .page-terminal-session .terminal-monitor__frame,
  .page-terminal-session .terminal-monitor__bezel {
    height: 100%;
    min-height: 0;
  }

  .page-terminal-session .terminal-monitor__frame {
    aspect-ratio: auto;
  }

  .terminal-monitor__frame {
    border-radius: 1.05rem;
    padding: 0.38rem;
  }

  .terminal-monitor__bezel {
    border-radius: 0.78rem;
    padding: 0.32rem;
  }

  .terminal-monitor__screen {
    min-height: 0;
    padding: 1.2rem 1rem;
  }

  .terminal-monitor__header {
    padding-bottom: 0.85rem;
  }

  .terminal-monitor__eyebrow {
    font-size: 0.86rem;
    letter-spacing: 0.12em;
  }

  .terminal-monitor__body {
    min-height: 0;
  }

  .terminal-monitor__intro {
    font-size: 0.92rem;
    line-height: 1.6;
  }

  .terminal-entrance-actions,
  .terminal-session-actions {
    gap: 0.55rem;
    margin-top: 12px;
    width: 100%;
  }

  .terminal-entrance-actions__list {
    flex-wrap: nowrap;
    align-items: stretch;
    gap: 0.55rem;
  }

  .terminal-entrance-actions__list > li {
    display: flex;
    flex: 1 1 0;
  }

  .terminal-entrance-actions {
    flex-wrap: nowrap;
    align-items: stretch;
  }

  .terminal-session-actions {
    flex-wrap: nowrap;
    align-items: stretch;
  }

  .terminal-clearance,
  .terminal-session-option {
    flex: 1 1 0;
    width: 100%;
    min-width: 0;
    min-height: 2.8rem;
    padding: 0.75rem 0.45rem;
    font-size: 0.66rem;
    letter-spacing: 0.05em;
    text-align: center;
  }

  .terminal-clearance::before,
  .terminal-session-option::before {
    inset: 0.11rem;
    border-radius: 0.6rem;
  }

  .terminal-clearance::after,
  .terminal-session-option::after {
    inset: 0.24rem;
    border-radius: 0.44rem;
  }

  .terminal-session-option {
    padding: 0.68rem 0.25rem;
    font-size: 1rem;
    letter-spacing: 0.03em;
  }

  .xeno-card__body {
    grid-template-columns: 1fr;
  }

  .xeno-card__header {
    display: grid;
    justify-items: start;
    gap: 0.45rem;
    padding: 0.8rem 0.85rem;
  }

  .xeno-card__name,
  .xeno-card__eyebrow {
    max-width: 100%;
  }

  .xeno-card__name {
    font-size: clamp(1.9rem, 8vw, 2.4rem);
    line-height: 1;
  }

  .xeno-card__eyebrow {
    font-size: 0.74rem;
    letter-spacing: 0.1em;
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .xeno-card__visual-frame {
    width: min(100%, 18rem);
  }

  .xeno-card__visual-image {
    width: 100%;
    height: 100%;
  }

  .protocol-card h2,
  .xeno-card h2,
  .log-entry h2 {
    margin-left: 5%;
    max-width: 95%;
    padding-left: 0;
  }

  .protocol-card,
  .xeno-card,
  .log-entry,
  .terminal-case,
  .terminal-status {
    padding: var(--space-card-padding);
  }

  .protocol-table {
    min-width: 0;
    width: 100%;
  }

  .protocol-table-wrap {
    overflow-x: visible;
  }

  .protocol-table thead {
    display: none;
  }

  .protocol-table,
  .protocol-table tbody,
  .protocol-table tr,
  .protocol-table td {
    display: block;
  }

  .protocol-table tr {
    padding: 0.8rem 0.85rem;
    border-bottom: 1px solid var(--border-soft);
  }

  .protocol-table tbody tr:last-child {
    border-bottom: 0;
  }

  .protocol-table td {
    display: grid;
    grid-template-columns: minmax(5.6rem, 6.4rem) minmax(0, 1fr);
    gap: 0.55rem;
    width: 100%;
    padding: 0;
    border-bottom: 0;
    font-size: 0.84rem;
    line-height: 1.35;
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .protocol-table td + td {
    margin-top: 0.7rem;
  }

  .protocol-table td:nth-child(1),
  .protocol-table td:nth-child(2) {
    width: auto;
  }

  .protocol-table td:nth-child(2) {
    white-space: normal;
  }

  .protocol-table td:nth-child(1)::before {
    content: "Operation";
  }

  .protocol-table td:nth-child(2)::before {
    content: "Formula";
  }

  .protocol-table td:nth-child(3)::before {
    content: "Explanation";
  }

  .protocol-table td::before {
    color: var(--accent);
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
  }

  .protocol-table td > * {
    min-width: 0;
  }

  .research-log__metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .research-log__grid {
    grid-template-columns: 1fr;
  }

  .research-log__grid .log-entry h2 {
    margin-left: 0;
    max-width: 100%;
  }

  .research-log__actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .research-log__actions .inline-button {
    width: 100%;
  }

  .terminal-actions__buttons {
    gap: var(--size-terminal-buttons-gap);
  }

  .site-footer__inner {
    padding: var(--space-footer-padding-block) 1rem;
  }
}

@media (max-width: 720px) {
  .terminal-entrance-actions__list > li {
    display: flex;
    min-width: 0;
  }

  .terminal-clearance,
  .page-terminal-session .terminal-session-option {
    min-height: 3.5rem;
    padding: 0.65rem 0.55rem;
  }

  .terminal-clearance__label,
  .page-terminal-session .terminal-session-option {
    font-size: 0.78rem;
  }

  .terminal-session-statusbar {
    display: grid;
    align-items: start;
  }

  .terminal-session-progress {
    text-align: left;
    white-space: normal;
  }

  .terminal-session-statusbar .terminal-monitor__eyebrow {
    white-space: normal;
  }

  .terminal-session-state-title {
    font-size: 1.25rem;
  }

  .terminal-flow-actions {
    width: calc(100% - 1rem);
  }

  .terminal-screen-option {
    grid-template-columns: 4.5rem minmax(0, 1fr);
  }

  .terminal-result-grid {
    grid-template-columns: 1fr;
  }

  .terminal-primary-action,
  .terminal-secondary-action {
    min-height: 3rem;
    font-size: 0.68rem;
  }
}