/* ==========================================================================
   PrintMarshal — Product Showcase Stylesheet
   Brand: Steel & Signal (Graphite, Gunmetal, Signal Cobalt, Brass Star)
   Typography: Barlow (Display), IBM Plex Sans (UI/Body), IBM Plex Mono (Data)
   ========================================================================== */

:root {
  /* Brand palette (brand/README.md) */
  --graphite: #14171E;
  --gunmetal: #2A313D;
  --slate: #5B6676;
  --mist: #E8ECF2;
  --cobalt: #2E54E6;
  --deep: #1E3AA8;
  --tint: #8DA4F2;
  --brass: #D7A442; /* Reserved strictly for the Guard Chevron star */

  /* Surface hierarchy (calm dark network-operations console) */
  --bg-canvas: #0D1016;
  --bg-base: #12161F;
  --bg-elevated: #171C27;
  --bg-panel: #1C2230;
  --bg-subtle: #212838;
  --bg-hover: #262E40;

  /* Text hierarchy */
  --text-primary: #F2F5FA;
  --text-secondary: #B4BECE;
  --text-muted: #7F8B9E;
  --text-dim: #5B6676;

  /* Borders & dividers */
  --border-subtle: rgba(232, 236, 242, 0.08);
  --border-default: rgba(232, 236, 242, 0.13);
  --border-strong: rgba(232, 236, 242, 0.22);
  --border-accent: rgba(141, 164, 242, 0.42);

  /* Operational state semantics (never rely on color alone) */
  --state-ok: #34B37A;
  --state-ok-bg: rgba(52, 179, 122, 0.12);
  --state-ok-border: rgba(52, 179, 122, 0.35);

  --state-warn: #E8A33A;
  --state-warn-bg: rgba(232, 163, 58, 0.12);
  --state-warn-border: rgba(232, 163, 58, 0.36);

  --state-crit: #EC5B53;
  --state-crit-bg: rgba(236, 91, 83, 0.12);
  --state-crit-border: rgba(236, 91, 83, 0.38);

  --state-info: #7898F6;
  --state-info-bg: rgba(46, 84, 230, 0.16);
  --state-info-border: rgba(120, 152, 246, 0.38);

  /* Distinct accessible treatment for UNKNOWN evidence (dashed border, cool neutral) */
  --state-unk: #A7B3C6;
  --state-unk-bg: rgba(167, 179, 198, 0.08);
  --state-unk-border: rgba(167, 179, 198, 0.42);

  /* Typography */
  --font-display: 'Barlow', -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, SFMono-Regular, Menlo, monospace;

  /* Layout metrics */
  --container-max: 1240px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-panel: 0 20px 50px rgba(0, 0, 0, 0.48), 0 1px 0 rgba(255, 255, 255, 0.05) inset;
  --shadow-card: 0 10px 28px rgba(0, 0, 0, 0.28);
}

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

html {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  background-color: var(--bg-canvas);
  background-image:
    radial-gradient(ellipse 90% 42% at 50% 0%, rgba(46, 84, 230, 0.14), transparent 70%),
    linear-gradient(180deg, #0D1016 0%, #11151E 100%);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

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

a {
  color: var(--tint);
  text-decoration: underline;
  text-decoration-color: rgba(141, 164, 242, 0.35);
  text-underline-offset: 3px;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

a:hover {
  color: #B4C4F9;
  text-decoration-color: currentColor;
}

/* Accessible keyboard focus */
:focus-visible {
  outline: 2px solid var(--tint);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 999;
  padding: 10px 16px;
  background: var(--cobalt);
  color: #FFFFFF;
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  box-shadow: var(--shadow-card);
}

.skip-link:focus {
  top: 14px;
  color: #FFFFFF;
}

/* Container & Grid Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h1 {
  font-size: clamp(2.25rem, 4.2vw, 3.5rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.65rem, 2.8vw, 2.35rem);
  font-weight: 700;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h4 {
  font-size: 1.05rem;
  font-weight: 600;
}

p {
  margin: 0;
  color: var(--text-secondary);
}

code, pre, .mono {
  font-family: var(--font-mono);
  font-feature-settings: "zero" 1;
}

p .mono, li .mono, td .mono, dd .mono, p code, li code, td code {
  overflow-wrap: anywhere;
}

p code, li code, td code {
  font-size: 0.84em;
  padding: 2px 6px;
  background: rgba(232, 236, 242, 0.07);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  color: var(--mist);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--tint);
  margin-bottom: 12px;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--cobalt);
  box-shadow: 0 0 0 2px rgba(46, 84, 230, 0.28);
}

.lead {
  font-size: clamp(1.06rem, 1.35vw, 1.22rem);
  line-height: 1.62;
  color: var(--text-secondary);
  max-width: 66ch;
}

/* ==========================================================================
   Site Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 16, 22, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  color: var(--text-primary);
  flex-shrink: 0;
}

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

.brand-mark {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-name span {
  color: var(--tint);
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(46, 84, 230, 0.16);
  border: 1px solid rgba(141, 164, 242, 0.28);
  color: var(--tint);
  letter-spacing: 0.03em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  padding: 7px 13px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.site-nav a:hover {
  color: var(--text-primary);
  background: rgba(232, 236, 242, 0.05);
}

.site-nav a[aria-current="page"] {
  color: var(--text-primary);
  background: rgba(46, 84, 230, 0.18);
  border: 1px solid rgba(141, 164, 242, 0.28);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.quiet-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}

.quiet-link:hover {
  color: var(--text-primary);
  background: rgba(232, 236, 242, 0.05);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.925rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid var(--border-default);
  background: var(--bg-elevated);
  color: var(--text-primary);
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
  color: var(--text-primary);
  text-decoration: none;
}

.btn-primary {
  background: var(--cobalt);
  border-color: rgba(141, 164, 242, 0.4);
  color: #FFFFFF;
  box-shadow: 0 2px 10px rgba(46, 84, 230, 0.35);
}

.btn-primary:hover {
  background: #395FF0;
  border-color: var(--tint);
  color: #FFFFFF;
}

.btn-sm {
  padding: 7px 13px;
  font-size: 0.84rem;
}

/* ==========================================================================
   Status & Capability Pills (Color + Icon/Shape + Border + Label)
   ========================================================================== */
.status-pill,
.cap-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  line-height: 1.35;
  white-space: nowrap;
  border: 1px solid transparent;
}

/* Operational results: pass / fail / warn / info / unknown */
.status-pass,
.cap-implemented {
  background: var(--state-ok-bg);
  color: #6CE0A6;
  border-color: var(--state-ok-border);
}

.status-fail {
  background: var(--state-crit-bg);
  color: #FF8E88;
  border-color: var(--state-crit-border);
}

.status-warn,
.cap-device {
  background: var(--state-warn-bg);
  color: #F6C168;
  border-color: var(--state-warn-border);
}

.status-info,
.cap-sim {
  background: var(--state-info-bg);
  color: #A8C0FF;
  border-color: var(--state-info-border);
}

/* Unknown evidence & Requires additional driver use dashed borders so they never look like Pass */
.status-unknown,
.cap-driver {
  background: var(--state-unk-bg);
  color: #C7D1E0;
  border: 1px dashed var(--state-unk-border);
}

.mgmt-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 7px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  background: rgba(232, 163, 58, 0.13);
  border: 1px solid rgba(232, 163, 58, 0.35);
  color: #F6C168;
}

/* ==========================================================================
   Sections & Layout Blocks
   ========================================================================== */
.section {
  padding: 76px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-tight {
  padding: 52px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-alt {
  background: rgba(18, 22, 31, 0.65);
}

.section-header {
  max-width: 760px;
  margin-bottom: 40px;
}

.section-header h2 {
  margin-bottom: 12px;
}

/* ==========================================================================
   Hero Showcase
   ========================================================================== */
.hero {
  padding: 64px 0 72px;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-top {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: end;
  margin-bottom: 40px;
}

.hero-title {
  margin-bottom: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 26px;
}

.hero-meta-panel {
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero-meta-title {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.hero-meta-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.hero-meta-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-meta-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

/* Browser / Console Frame for Real Product Captures */
.console-showcase {
  background: var(--bg-base);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-panel);
  overflow: hidden;
}

.console-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-default);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
}

.console-dots {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.console-dots span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gunmetal);
  border: 1px solid var(--border-default);
}

.console-url {
  padding: 3px 10px;
  border-radius: 4px;
  background: rgba(13, 16, 22, 0.65);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.console-zoom-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 4px;
  background: rgba(46, 84, 230, 0.18);
  border: 1px solid rgba(141, 164, 242, 0.32);
  color: var(--tint);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  cursor: pointer;
  flex-shrink: 0;
  white-space: nowrap;
}

.console-zoom-btn:hover {
  background: rgba(46, 84, 230, 0.3);
  color: #FFFFFF;
}

.console-media {
  position: relative;
  background: #0B0D12;
  cursor: zoom-in;
}

.console-media img {
  width: 100%;
  height: auto;
  display: block;
}

/* Responsive desktop vs focused mobile detail view. The selector outranks
   .console-media img, which would otherwise show both captures at once. */
.console-media img.media-mobile-crop,
img.media-mobile-crop {
  display: none;
}

.console-annotations {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border-default);
  border-top: 1px solid var(--border-default);
}

.annotation-item {
  background: var(--bg-elevated);
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.annotation-item strong {
  font-size: 0.86rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.annotation-item p {
  font-size: 0.82rem;
  line-height: 1.48;
  color: var(--text-secondary);
}

.annotation-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(46, 84, 230, 0.25);
  border: 1px solid var(--tint);
  color: var(--tint);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  flex-shrink: 0;
}

/* ==========================================================================
   Problem Statement Section (Visibility Gap)
   ========================================================================== */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.problem-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.problem-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.problem-card h3 {
  font-size: 1.15rem;
}

.problem-card p {
  font-size: 0.92rem;
}

.problem-contrast {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Interactive 5-Step Guided Walkthrough
   ========================================================================== */
.walkthrough-shell {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.walkthrough-tabs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}

.walkthrough-tab {
  text-align: left;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.walkthrough-tab:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

.walkthrough-tab[aria-selected="true"] {
  background: rgba(46, 84, 230, 0.16);
  border-color: var(--tint);
  color: var(--text-primary);
  box-shadow: 0 0 0 1px rgba(141, 164, 242, 0.25) inset;
}

.walkthrough-step-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--tint);
}

.walkthrough-tab-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.25;
}

.walkthrough-tab-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.35;
}

.walkthrough-panel {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 24px;
  align-items: start;
}

.walkthrough-panel[hidden] {
  display: none;
}

.walkthrough-copy {
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.walkthrough-copy h3 {
  font-size: 1.35rem;
}

.walkthrough-points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.walkthrough-points li {
  position: relative;
  padding-left: 18px;
}

.walkthrough-points li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--tint);
  font-family: var(--font-mono);
}

.walkthrough-boundary {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: rgba(13, 16, 22, 0.55);
  border-left: 3px solid var(--tint);
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Signature Visual Interaction:
   Device → Observation → Policy result → Evidence → Available next action
   ========================================================================== */
.trace-box {
  margin-top: 40px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.trace-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.trace-selector {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 4px;
  background: var(--bg-canvas);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
}

.trace-btn {
  padding: 7px 12px;
  border-radius: 4px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  cursor: pointer;
}

.trace-btn[aria-pressed="true"] {
  background: var(--bg-panel);
  border-color: var(--border-strong);
  color: var(--text-primary);
}

.trace-chain {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  position: relative;
}

.trace-chain[hidden] {
  display: none;
}

.trace-node {
  background: var(--bg-base);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.trace-stage {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.trace-node h4 {
  font-size: 0.96rem;
  color: var(--text-primary);
}

.trace-node p {
  font-size: 0.82rem;
  line-height: 1.45;
}

.trace-code {
  margin-top: auto;
  padding: 6px 8px;
  border-radius: 4px;
  background: rgba(232, 236, 242, 0.05);
  border: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--mist);
}

/* ==========================================================================
   Visual Capability Split Sections
   ========================================================================== */
.capability-split {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 40px;
  align-items: center;
  padding: 44px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.capability-split:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.capability-split.reverse {
  grid-template-columns: 1.15fr 1fr;
}

.capability-copy {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.capability-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.spec-dl {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 10px 16px;
  margin: 8px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.86rem;
}

.spec-dl dt {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.spec-dl dd {
  margin: 0;
  color: var(--text-secondary);
}

/* ==========================================================================
   Tables & Capability Matrices
   ========================================================================== */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.data-table th {
  padding: 13px 16px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-default);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  white-space: nowrap;
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: top;
}

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

.data-table td strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ==========================================================================
   Cards, Callouts & Architecture Diagrams
   ========================================================================== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.hero-top > *,
.walkthrough-panel > *,
.capability-split > *,
.problem-grid > *,
.grid-2 > *,
.grid-3 > *,
.grid-4 > *,
.panel-card,
.console-showcase,
.walkthrough-copy,
.capability-copy {
  min-width: 0;
}

.panel-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.panel-card h3 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.callout {
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-left: 4px solid var(--cobalt);
  line-height: 1.55;
}

.callout.warn {
  border-left-color: var(--state-warn);
  background: rgba(232, 163, 58, 0.06);
}

.callout.unk {
  border-left-color: var(--state-unk);
}

.callout strong {
  display: block;
  margin-bottom: 6px;
  color: var(--text-primary);
  font-size: 0.94rem;
}

/* Code / Command Blocks with Copy Button */
.code-block {
  background: #0A0D12;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 12px 0;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
}

.copy-btn {
  padding: 3px 9px;
  border-radius: 4px;
  background: rgba(232, 236, 242, 0.06);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  cursor: pointer;
}

.copy-btn:hover {
  background: rgba(46, 84, 230, 0.22);
  color: #FFFFFF;
  border-color: var(--tint);
}

.code-block pre {
  margin: 0;
  padding: 16px;
  overflow-x: auto;
  font-size: 0.83rem;
  line-height: 1.58;
  color: var(--mist);
}

/* Page Header for Interior Pages */
.page-hero {
  padding: 52px 0 44px;
  border-bottom: 1px solid var(--border-subtle);
  background: linear-gradient(180deg, rgba(46, 84, 230, 0.08) 0%, transparent 100%);
}

.page-hero h1 {
  font-size: clamp(2rem, 3.4vw, 2.85rem);
  margin-bottom: 14px;
}

.page-subnav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.page-subnav a {
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-secondary);
  text-decoration: none;
}

.page-subnav a:hover {
  border-color: var(--tint);
  color: var(--text-primary);
}

/* Progressive Disclosure Details */
details.disclosure {
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  overflow: hidden;
}

details.disclosure + details.disclosure {
  margin-top: 12px;
}

details.disclosure summary {
  padding: 16px 20px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  list-style: none;
}

details.disclosure summary::-webkit-details-marker {
  display: none;
}

details.disclosure summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--tint);
}

details.disclosure[open] summary {
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(232, 236, 242, 0.03);
}

details.disclosure[open] summary::after {
  content: "−";
}

.disclosure-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* Lightbox Dialog for Enlargeable Product Captures */
dialog.lightbox {
  max-width: min(95vw, 1480px);
  width: 100%;
  max-height: 92vh;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  background: var(--bg-base);
  color: var(--text-primary);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.85);
}

dialog.lightbox::backdrop {
  background: rgba(7, 9, 13, 0.82);
  backdrop-filter: blur(4px);
}

.lightbox-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 18px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border-default);
}

.lightbox-caption {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.lightbox-body {
  overflow: auto;
  max-height: calc(92vh - 56px);
  background: #0A0D12;
}

.lightbox-body img {
  width: 100%;
  height: auto;
  display: block;
}

/* Closing Call to Action & Footer */
.closing-cta {
  background: linear-gradient(180deg, rgba(46, 84, 230, 0.14) 0%, rgba(18, 22, 31, 0.9) 100%);
  border: 1px solid rgba(141, 164, 242, 0.28);
  border-radius: var(--radius-lg);
  padding: 44px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.site-footer {
  padding: 48px 0 56px;
  background: #0A0D12;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.86rem;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 36px;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-col a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* ==========================================================================
   Responsive Breakpoints (Tablet 1024px & Mobile 390px)
   ========================================================================== */
@media (max-width: 1120px) {
  .brand-tag {
    display: none;
  }
}

@media (max-width: 1080px) {
  .hero-top {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .walkthrough-tabs {
    grid-template-columns: repeat(3, 1fr);
  }

  .walkthrough-panel {
    grid-template-columns: 1fr;
  }

  .trace-chain {
    grid-template-columns: 1fr;
  }

  .capability-split,
  .capability-split.reverse {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .problem-grid,
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 720px) {
  .container {
    padding: 0 16px;
  }

  .header-inner {
    flex-wrap: wrap;
    padding: 12px 0;
  }

  .site-nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .brand-tag {
    display: none;
  }

  .section {
    padding: 48px 0;
  }

  .walkthrough-tabs {
    grid-template-columns: 1fr;
  }

  .console-annotations,
  .problem-grid,
  .grid-2,
  .grid-3,
  .grid-4,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  /* On mobile, show focused detail crops instead of unreadable shrunken desktop dashboards */
  .media-desktop-full {
    display: none !important;
  }

  .media-mobile-crop {
    display: block !important;
  }

  .spec-dl {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .closing-cta {
    padding: 28px 22px;
  }
}

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