:root {
  color-scheme: dark;
  font-family: var(--font-sans);
  font-synthesis: none;
  text-rendering: optimizeLegibility;

  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  --shell-background: #070a0f;
  --shell-background-raised: #0a0f16;
  --surface-1: #0e141d;
  --surface-2: #131c27;
  --surface-3: #192432;
  --surface-overlay: rgb(14 20 29 / 96%);
  --border-subtle: #263344;
  --border-strong: #3a4a5f;
  --text-primary: #f3f7fb;
  --text-secondary: #b5c0ce;
  --text-muted: #8e9caf;
  --action-primary: #48c9ef;
  --action-primary-strong: #8ee7ff;
  --action-violet: #a78bfa;
  --focus-ring: #7ee7ff;

  --status-green: #62e6aa;
  --status-green-surface: #0d2a20;
  --status-green-border: #276c51;
  --status-orange: #ffc06a;
  --status-orange-surface: #30200d;
  --status-orange-border: #765120;
  --status-red: #ff9299;
  --status-red-surface: #35161b;
  --status-red-border: #804049;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --shadow-raised: 0 18px 50px rgb(0 0 0 / 28%);
  --content-width: 1440px;
  --transition-fast: 160ms ease-out;
  --transition-standard: 220ms ease-out;
}

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

html {
  min-width: 320px;
  min-height: 100%;
  background: var(--shell-background);
}

body {
  min-width: 320px;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  overflow-x: hidden;
  color: var(--text-primary);
  background:
    radial-gradient(circle at 18% -8%, rgb(30 137 171 / 16%), transparent 36%),
    radial-gradient(circle at 88% 5%, rgb(108 72 179 / 13%), transparent 30%),
    var(--shell-background);
  font-size: 16px;
  line-height: 1.55;
}

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

button,
[role="button"],
select,
label[for],
summary {
  cursor: pointer;
}

a {
  color: var(--action-primary-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: #c8f5ff;
}

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

h1,
h2,
h3,
h4,
p,
dl,
dd {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  color: var(--text-primary);
  line-height: 1.15;
  text-wrap: balance;
}

h1 {
  max-width: 18ch;
  margin-bottom: var(--space-5);
  font-size: clamp(2.25rem, 6vw, 4.75rem);
  letter-spacing: -0.045em;
}

h2 {
  margin-bottom: var(--space-3);
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  letter-spacing: -0.025em;
}

h3 {
  margin-bottom: 0;
  font-size: 1.45rem;
  letter-spacing: -0.018em;
}

h4 {
  margin-bottom: var(--space-3);
  font-size: 0.78rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
}

main:focus {
  outline: none;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: var(--space-3);
  left: var(--space-3);
  min-height: 44px;
  padding: 10px var(--space-4);
  border: 1px solid var(--focus-ring);
  border-radius: var(--radius-sm);
  color: #031018;
  background: var(--focus-ring);
  font-weight: 750;
  transform: translateY(calc(-100% - var(--space-10)));
  transition: transform var(--transition-fast);
}

.skip-link:focus {
  color: #031018;
  transform: translateY(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;
}

.live-region {
  min-height: 1.5em;
  color: var(--text-secondary);
}

.live-region[data-tone="success"] {
  color: var(--status-green);
}

.live-region[data-tone="error"] {
  color: var(--status-red);
}

.preserve-lines,
.auto-reply-preview {
  white-space: pre-wrap;
}

.lab-shell {
  width: min(100%, var(--content-width));
  min-height: 100vh;
  min-height: 100dvh;
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 3vw, var(--space-10));
}

.shell-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  border-bottom: 1px solid var(--border-subtle);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 44px;
  color: var(--text-primary);
  font-weight: 760;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand:hover {
  color: var(--text-primary);
}

.brand__mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid #4c7b8b;
  border-radius: 10px;
  color: #d5f8ff;
  background: linear-gradient(145deg, #17333e, #111a29);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 9%);
  font-size: 0.92rem;
}

.brand__name {
  font-size: 1.05rem;
}

.shell-header__label {
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.shell-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-8);
  border-top: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.82rem;
}

.eyebrow {
  margin-bottom: var(--space-3);
  color: var(--action-primary);
  font-size: 0.75rem;
  font-weight: 760;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.comparison-hero {
  display: grid;
  padding-block: clamp(var(--space-12), 8vw, 112px) var(--space-12);
}

.comparison-hero__intro {
  max-width: 67ch;
  margin-bottom: var(--space-8);
  color: var(--text-secondary);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

.simulation-notice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  max-width: 850px;
  padding: var(--space-4) var(--space-5);
  border: 1px solid #3a5965;
  border-radius: var(--radius-md);
  color: #d9eaf0;
  background: #0d2028;
  box-shadow: inset 3px 0 0 var(--action-primary);
}

.simulation-notice strong {
  flex: 0 0 auto;
  color: var(--action-primary-strong);
}

.comparison-section {
  padding-block: var(--space-12) var(--space-16);
  border-top: 1px solid var(--border-subtle);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.section-heading > p {
  max-width: 47ch;
  margin-bottom: var(--space-2);
  color: var(--text-muted);
}

.direction-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

.direction-card {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: clamp(var(--space-5), 2.4vw, var(--space-8));
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgb(25 36 50 / 88%), rgb(14 20 29 / 96%));
  box-shadow: var(--shadow-raised);
  transition: border-color var(--transition-standard), transform var(--transition-standard);
}

.direction-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: var(--action-primary);
  content: "";
}

.direction-card[data-direction-card="site-cockpit"]::before {
  background: var(--action-violet);
}

.direction-card[data-direction-card="operations-inbox"]::before {
  background: linear-gradient(90deg, var(--status-orange), var(--status-red));
}

.direction-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.direction-card__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.direction-card__index {
  min-width: 34px;
  padding-top: 3px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
}

.direction-card__model {
  margin-bottom: var(--space-1);
  color: var(--text-muted);
  font-size: 0.73rem;
  font-weight: 720;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.direction-card__summary {
  min-height: 5em;
  margin-bottom: var(--space-5);
  color: var(--text-secondary);
}

.direction-card__profile {
  margin-bottom: var(--space-6);
  padding: var(--space-4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: rgb(7 10 15 / 42%);
}

.direction-card__profile dt {
  margin-bottom: var(--space-1);
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 720;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.direction-card__profile dd {
  margin-bottom: 0;
  font-weight: 650;
}

.direction-card__assessment {
  display: grid;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

.direction-card__assessment section + section {
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-subtle);
}

.direction-card ul {
  display: grid;
  gap: var(--space-2);
  padding-left: var(--space-5);
  margin-block: 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.direction-card li::marker {
  color: var(--action-primary);
}

.direction-card__link {
  width: 100%;
  margin-top: auto;
}

.button,
.primary-control,
button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 9px var(--space-4);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  font-size: 0.9rem;
  font-weight: 720;
  text-align: center;
  text-decoration: none;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  touch-action: manipulation;
}

.button:hover,
.primary-control:hover,
button:hover {
  border-color: #60748c;
  background: var(--surface-3);
}

.button--primary {
  border-color: #2884a0;
  color: #03141b;
  background: var(--action-primary);
}

.button--primary:hover {
  border-color: var(--action-primary-strong);
  color: #020d12;
  background: var(--action-primary-strong);
}

.comparison-guidance {
  max-width: 840px;
  padding: var(--space-8);
  margin-bottom: var(--space-16);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--surface-1);
}

.comparison-guidance p:last-child {
  max-width: 70ch;
  margin-bottom: 0;
  color: var(--text-secondary);
}

.icon {
  width: 1em;
  height: 1em;
  flex: 0 0 auto;
}

.status {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-1);
}

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

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

.status__age {
  margin-left: auto;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

.status__cause,
.status__next-action {
  margin-bottom: 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.status__next-action {
  color: var(--text-primary);
  font-weight: 650;
}

.status--compact {
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
}

.status--green {
  border-color: var(--status-green-border);
  background: var(--status-green-surface);
}

.status--green .status__summary > .icon {
  color: var(--status-green);
}

.status--orange {
  border-color: var(--status-orange-border);
  background: var(--status-orange-surface);
}

.status--orange .status__summary > .icon {
  color: var(--status-orange);
}

.status--red {
  border-color: var(--status-red-border);
  background: var(--status-red-surface);
}

.status--red .status__summary > .icon {
  color: var(--status-red);
}

.data-table-shell {
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-1);
}

.data-table-scroll {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
}

.data-table th,
.data-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
  text-align: left;
  vertical-align: middle;
}

.data-table th {
  color: var(--text-muted);
  background: var(--surface-2);
  font-size: 0.75rem;
  font-weight: 760;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

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

.mobile-rows {
  display: none;
  gap: var(--space-3);
  padding: 0;
  margin: 0;
  list-style: none;
}

.mobile-row {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--surface-1);
}

dialog {
  width: min(680px, calc(100% - var(--space-8)));
  max-height: calc(100dvh - var(--space-8));
  padding: 0;
  overflow: auto;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  background: var(--surface-overlay);
  box-shadow: 0 28px 90px rgb(0 0 0 / 60%);
}

dialog::backdrop {
  background: rgb(0 0 0 / 68%);
}

@media (max-width: 1100px) {
  .direction-grid {
    grid-template-columns: 1fr;
  }

  .direction-card__summary {
    min-height: 0;
  }

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

  .direction-card__assessment section + section {
    padding-top: 0;
    padding-left: var(--space-5);
    border-top: 0;
    border-left: 1px solid var(--border-subtle);
  }
}

@media (max-width: 767px) {
  .lab-shell {
    padding-inline: var(--space-4);
  }

  .shell-header {
    min-height: 64px;
  }

  .shell-header__label {
    max-width: 16ch;
    text-align: right;
  }

  .comparison-hero {
    padding-block: var(--space-12) var(--space-10);
  }

  .comparison-hero__intro {
    margin-bottom: var(--space-6);
  }

  .simulation-notice,
  .section-heading,
  .shell-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .comparison-section {
    padding-block: var(--space-10) var(--space-12);
  }

  .direction-grid {
    gap: var(--space-4);
  }

  .direction-card__assessment {
    grid-template-columns: 1fr;
  }

  .direction-card__assessment section + section {
    padding-top: var(--space-5);
    padding-left: 0;
    border-top: 1px solid var(--border-subtle);
    border-left: 0;
  }

  .comparison-guidance {
    padding: var(--space-5);
    margin-bottom: var(--space-12);
  }

  .data-table {
    display: none;
  }

  .mobile-rows {
    display: grid;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}