/* ==========================================================================
   NovZon Multiverse — Public Product & R&D Landing Stylesheet (Phase 2 Refined)
   Cinematic systems-research design language, horizon-branch narrative motif.
   NON-NEGOTIABLE: Content is ALWAYS visible by default without JS or animation.
   ========================================================================== */

:root {
  --mv-bg: #07080e;
  --mv-surface: #0e111a;
  --mv-surface-raised: #141824;
  --mv-surface-card: #111420;
  --mv-border: rgba(255, 255, 255, 0.08);
  --mv-border-accent: rgba(168, 85, 247, 0.35);
  
  --mv-text-primary: #f8fafc;
  --mv-text-secondary: #94a3b8;
  --mv-text-muted: #64748b;
  
  --mv-accent-purple: #a855f7;
  --mv-accent-violet: #7c3aed;
  --mv-accent-cyan: #38bdf8;
  --mv-accent-emerald: #10b981;
  --mv-accent-amber: #f59e0b;
}

.mvl-shell {
  background-color: var(--mv-bg);
  color: var(--mv-text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

.mvl-container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Background Subtle Atmospheric Glow */
.mvl-shell::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 900px;
  background: radial-gradient(circle at 50% 120px, rgba(124, 58, 237, 0.12) 0%, rgba(7, 8, 14, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

/* Typography */
.mvl-display {
  font-family: 'Outfit', sans-serif;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

/* Eyebrow */
.mvl-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--mv-accent-purple);
  margin-bottom: 1.25rem;
}

.mvl-eyebrow-sep {
  opacity: 0.4;
}

/* Status Chips */
.mvl-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.mvl-chip {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--mv-border);
  color: var(--mv-text-secondary);
}

.mvl-chip-primary {
  background: rgba(168, 85, 247, 0.1);
  border-color: rgba(168, 85, 247, 0.35);
  color: #c084fc;
}

.mvl-chip-accent {
  background: rgba(56, 189, 248, 0.1);
  border-color: rgba(56, 189, 248, 0.3);
  color: #7dd3fc;
}

/* ==========================================================================
   Section 1 — Hero (Asymmetric composition with bespoke horizon vector)
   ========================================================================== */
.mvl-hero {
  position: relative;
  z-index: 1;
  padding: 4.5rem 0 5rem;
}

.mvl-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3.5rem;
  align-items: center;
}

@media (min-width: 1024px) {
  .mvl-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

.mvl-hero-title {
  font-size: clamp(2.5rem, 5.2vw, 4rem);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 1.5rem;
}

.mvl-hero-title-accent {
  background: linear-transient;
  color: #c084fc;
}

.mvl-hero-lead {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.65;
  color: var(--mv-text-secondary);
  margin-bottom: 2.25rem;
  max-width: 600px;
}

.mvl-hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.mvl-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 10px;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
}

.mvl-btn-primary {
  background-color: var(--mv-accent-violet);
  color: #ffffff;
  border: 1px solid #9333ea;
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.25);
}

.mvl-btn-primary:hover {
  background-color: #6d28d9;
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(124, 58, 237, 0.35);
}

.mvl-btn-secondary {
  background-color: rgba(255, 255, 255, 0.05);
  color: #e2e8f0;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.mvl-btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.22);
}

.mvl-status-line {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--mv-text-muted);
}

.mvl-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mv-accent-purple);
  box-shadow: 0 0 8px var(--mv-accent-purple);
}

/* Hero Diagram Visual */
.mvl-hero-visual {
  width: 100%;
}

.mvl-hero-diagram-wrap {
  background: var(--mv-surface);
  border: 1px solid var(--mv-border);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
}

.mvl-diagram-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--mv-border);
  font-size: 0.75rem;
  font-weight: 600;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.legend-item.past { color: #94a3b8; }
.legend-item.boundary { color: #c084fc; }
.legend-item.future { color: #38bdf8; }

.legend-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.mvl-hero-svg {
  width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   Section Common Standards
   ========================================================================== */
.mvl-section {
  padding: 4.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.mvl-section-header {
  margin-bottom: 3rem;
}

.mvl-section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 0.85rem;
}

.mvl-section-desc {
  font-size: 1.0625rem;
  color: var(--mv-text-secondary);
  max-width: 680px;
  line-height: 1.6;
}

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

.text-center .mvl-section-desc {
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   Section 2 — The Problem (Editorial visual comparison)
   ========================================================================== */
.mvl-problem-comparison {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 900px) {
  .mvl-problem-comparison {
    grid-template-columns: 1fr 1.25fr 1fr;
    align-items: stretch;
  }
}

.mvl-problem-pillar {
  background: var(--mv-surface);
  border: 1px solid var(--mv-border);
  border-radius: 14px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
}

.mvl-pillar-badge {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.mvl-problem-pillar.authored .mvl-pillar-badge { color: var(--mv-accent-cyan); }
.mvl-problem-pillar.emergent .mvl-pillar-badge { color: var(--mv-accent-amber); }

.mvl-pillar-heading {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.5rem;
}

.mvl-pillar-summary {
  font-size: 0.875rem;
  color: var(--mv-text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.mvl-pillar-points {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.84375rem;
  line-height: 1.45;
}

.mvl-pillar-points li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.mvl-pillar-points li.pos i { color: var(--mv-accent-emerald); margin-top: 0.2rem; }
.mvl-pillar-points li.neg i { color: #ef4444; margin-top: 0.2rem; }

/* The Bridge (Center) */
.mvl-problem-bridge {
  background: linear-gradient(180deg, #121422 0%, #0d0f1a 100%);
  border: 1px solid var(--mv-border-accent);
  border-radius: 14px;
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-shadow: 0 8px 30px rgba(124, 58, 237, 0.12);
}

.mvl-bridge-label {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #c084fc;
  margin-bottom: 0.5rem;
}

.mvl-bridge-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 0.85rem;
}

.mvl-bridge-text {
  font-size: 0.90625rem;
  color: var(--mv-text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.mvl-bridge-signals {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
}

.mvl-sig {
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--mv-text-secondary);
  border: 1px solid var(--mv-border);
}

.mvl-sig.active {
  background: rgba(168, 85, 247, 0.15);
  border-color: rgba(168, 85, 247, 0.4);
  color: #c084fc;
}

.mvl-sig-arrow {
  color: var(--mv-text-muted);
}

/* ==========================================================================
   Section 3 — Central Principle (Signature visual split)
   ========================================================================== */
.mvl-principle-banner {
  background: var(--mv-surface);
  border: 1px solid var(--mv-border);
  border-radius: 20px;
  padding: 3rem 2rem;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

@media (min-width: 768px) {
  .mvl-principle-banner {
    padding: 3.5rem 3rem;
  }
}

.mvl-principle-quote {
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 1.25rem;
  line-height: 1.2;
}

.mvl-principle-highlight {
  color: #c084fc;
}

.mvl-principle-sub {
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--mv-text-secondary);
  max-width: 800px;
  margin-bottom: 2.5rem;
}

.mvl-principle-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--mv-border);
  border-radius: 14px;
  padding: 1.5rem;
}

@media (min-width: 768px) {
  .mvl-principle-split {
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
  }
}

.mvl-split-side {
  padding: 0.5rem;
}

.mvl-split-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.mvl-split-side.kernel-side .mvl-split-header i { color: var(--mv-accent-purple); font-size: 1.15rem; }
.mvl-split-side.model-side .mvl-split-header i { color: var(--mv-accent-cyan); font-size: 1.15rem; }

.mvl-split-header h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0;
}

.mvl-split-side ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  font-size: 0.84375rem;
  color: var(--mv-text-secondary);
}

.mvl-split-side ul li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.mvl-split-side.kernel-side ul li i { color: var(--mv-accent-purple); font-size: 0.75rem; }
.mvl-split-side.model-side ul li i { color: var(--mv-accent-cyan); font-size: 0.75rem; }

.mvl-split-divider {
  display: none;
}

@media (min-width: 768px) {
  .mvl-split-divider {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-left: 1px dashed var(--mv-border);
    border-right: 1px dashed var(--mv-border);
    padding: 0 1rem;
    height: 100%;
  }

  .mvl-split-divider span {
    font-size: 0.625rem;
    font-weight: 800;
    letter-spacing: 0.15em;
    color: var(--mv-text-muted);
    writing-mode: vertical-lr;
    transform: rotate(180deg);
  }
}

/* ==========================================================================
   Section 4 — Turn Flow Pipeline (100% visible, spatial & vertical fallback)
   ========================================================================== */
.mvl-turn-pipeline {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.mvl-pipeline-steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

@media (min-width: 992px) {
  .mvl-pipeline-steps {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    align-items: stretch;
    gap: 0.75rem;
  }
  
  .mvl-pipeline-arrow {
    display: none !important;
  }
}

.mvl-pipeline-node {
  background: var(--mv-surface);
  border: 1px solid var(--mv-border);
  border-radius: 12px;
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
  opacity: 1; /* Non-negotiable visibility */
  visibility: visible;
}

.mvl-pipeline-node.highlight {
  border-color: rgba(168, 85, 247, 0.4);
  background: linear-gradient(180deg, #121422 0%, var(--mv-surface) 100%);
}

.mvl-pipeline-node:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.2);
}

.mvl-node-num {
  font-size: 0.6875rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--mv-accent-purple);
  margin-bottom: 0.5rem;
}

.mvl-node-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.4rem;
}

.mvl-node-desc {
  font-size: 0.78125rem;
  color: var(--mv-text-secondary);
  line-height: 1.5;
  margin: 0;
}

.mvl-pipeline-arrow {
  display: flex;
  justify-content: center;
  color: var(--mv-text-muted);
  font-size: 0.875rem;
  padding: 0.25rem 0;
}

/* Walkthrough Console */
.mvl-turn-walkthrough {
  background: #090a10;
  border: 1px solid var(--mv-border);
  border-radius: 14px;
  overflow: hidden;
}

.mvl-walkthrough-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.25rem;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--mv-border);
}

.mvl-wt-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #c084fc;
}

.mvl-wt-note {
  font-size: 0.75rem;
  color: var(--mv-text-muted);
}

.mvl-walkthrough-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  padding: 1.25rem;
}

@media (min-width: 768px) {
  .mvl-walkthrough-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.mvl-wt-step-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--mv-text-secondary);
  margin-bottom: 0.5rem;
}

.mvl-wt-code-box {
  background: #050609;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-size: 0.8125rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: #cbd5e1;
  line-height: 1.5;
  min-height: 64px;
}

.mvl-wt-code-box .code-fn { color: #38bdf8; font-weight: 700; }
.mvl-wt-code-box .code-ok { color: #10b981; font-weight: 700; }
.mvl-wt-code-box .code-valid { color: #a855f7; font-weight: 700; }

/* ==========================================================================
   Section 5 — Six Architectural Ideas (Curated Bento)
   ========================================================================== */
.mvl-ideas-bento {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .mvl-ideas-bento {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .mvl-ideas-bento {
    grid-template-columns: repeat(3, 1fr);
  }
}

.mvl-idea-tile {
  background: var(--mv-surface);
  border: 1px solid var(--mv-border);
  border-radius: 14px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s ease;
  opacity: 1; /* Non-negotiable visibility */
  visibility: visible;
}

.mvl-idea-tile:hover {
  border-color: rgba(168, 85, 247, 0.35);
  transform: translateY(-2px);
}

.mvl-idea-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.mvl-idea-num {
  font-size: 0.6875rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--mv-text-muted);
}

.mvl-idea-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(168, 85, 247, 0.1);
  color: #c084fc;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9375rem;
}

.mvl-idea-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.6rem;
}

.mvl-idea-body {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--mv-text-secondary);
  margin-bottom: 1.5rem;
}

.mvl-idea-spec {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.spec-pill {
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  color: #94a3b8;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

/* ==========================================================================
   Section 6 — Horizon Line Framework Explorer
   ========================================================================== */
.mvl-horizon-explorer {
  background: var(--mv-surface);
  border: 1px solid var(--mv-border);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
}

.mvl-explorer-intro {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--mv-border);
}

@media (min-width: 768px) {
  .mvl-explorer-intro {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}

.mvl-explorer-text h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.35rem;
}

.mvl-explorer-text p {
  font-size: 0.875rem;
  color: var(--mv-text-secondary);
  max-width: 520px;
  margin: 0;
}

.mvl-path-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.mvl-path-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.85rem;
  border-radius: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--mv-border);
  color: var(--mv-text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.mvl-path-tab:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.mvl-path-tab.active {
  background: rgba(168, 85, 247, 0.15);
  border-color: rgba(168, 85, 247, 0.4);
  color: #ffffff;
}

.tab-indicator {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  font-weight: 800;
}

.mvl-path-tab.active .tab-indicator {
  background: var(--mv-accent-purple);
  color: #ffffff;
}

/* Diagram Zones Layout */
.mvl-diagram-zones {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
  .mvl-diagram-zones {
    grid-template-columns: 1fr 1fr 1.25fr;
  }
}

.mvl-zone-col {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.zone-badge {
  font-size: 0.6875rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--mv-text-muted);
  text-transform: uppercase;
  margin-bottom: 0.25rem;
}

.zone-badge.active {
  color: #c084fc;
}

.zone-node.locked {
  background: #090b12;
  border: 1px solid var(--mv-border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #94a3b8;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.zone-decision-node {
  background: linear-gradient(180deg, #16182c 0%, #0d0f1c 100%);
  border: 1px solid rgba(168, 85, 247, 0.4);
  border-radius: 12px;
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: center;
  min-height: 130px;
  position: relative;
}

.decision-ping {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #c084fc;
  box-shadow: 0 0 12px #c084fc;
  margin-bottom: 0.75rem;
}

.zone-decision-node strong {
  font-size: 0.9375rem;
  color: #ffffff;
}

.zone-decision-node span {
  font-size: 0.75rem;
  color: var(--mv-text-muted);
  margin-top: 0.25rem;
}

/* Path Detail Cards */
.mvl-path-card {
  display: none;
  background: #0d101a;
  border: 1px solid var(--mv-border);
  border-radius: 10px;
  padding: 1.25rem;
  flex-direction: column;
  gap: 0.75rem;
}

.mvl-path-card.active {
  display: flex;
  border-color: rgba(56, 189, 248, 0.4);
  background: linear-gradient(180deg, #0e1322 0%, #0a0d17 100%);
}

.card-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-head strong {
  font-size: 0.9375rem;
  color: #ffffff;
}

.branch-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
}

.branch-tag.cyan { background: rgba(56, 189, 248, 0.15); color: #38bdf8; }
.branch-tag.amber { background: rgba(245, 158, 11, 0.15); color: #f59e0b; }
.branch-tag.purple { background: rgba(168, 85, 247, 0.15); color: #c084fc; }

.mvl-path-card p {
  font-size: 0.8125rem;
  color: var(--mv-text-secondary);
  line-height: 1.5;
  margin: 0;
}

.card-meta {
  font-size: 0.75rem;
  font-weight: 600;
  color: #a855f7;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.mvl-explorer-footnote {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: var(--mv-text-muted);
  padding-top: 1rem;
  border-top: 1px solid var(--mv-border);
}

/* ==========================================================================
   Section 7 — Built, Not Just Pitched (Grouped Capabilities)
   ========================================================================== */
.mvl-capability-matrix {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 900px) {
  .mvl-capability-matrix {
    grid-template-columns: repeat(3, 1fr);
  }
}

.mvl-capability-group {
  background: var(--mv-surface);
  border: 1px solid var(--mv-border);
  border-radius: 14px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
}

.mvl-group-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--mv-border);
}

.mvl-group-header i {
  color: var(--mv-accent-purple);
  font-size: 1.1rem;
}

.mvl-group-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  margin: 0;
}

.mvl-capability-cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mvl-cap-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 0.85rem;
}

.mvl-cap-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.mvl-cap-name {
  font-size: 0.84375rem;
  font-weight: 700;
  color: #f1f5f9;
}

.mvl-cap-desc {
  font-size: 0.75rem;
  color: var(--mv-text-muted);
  line-height: 1.4;
  margin: 0;
}

.mvl-badge-imp,
.mvl-badge-prog,
.mvl-badge-eval {
  font-size: 0.65625rem;
  font-weight: 700;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  white-space: nowrap;
}

.mvl-badge-imp { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.mvl-badge-prog { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.mvl-badge-eval { background: rgba(56, 189, 248, 0.15); color: #38bdf8; }

/* ==========================================================================
   Section 8 — Where Language Models Fit
   ========================================================================== */
.mvl-model-roles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: 1.75rem;
}

@media (min-width: 768px) {
  .mvl-model-roles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.mvl-role-card {
  background: var(--mv-surface);
  border: 1px solid var(--mv-border);
  border-radius: 12px;
  padding: 1.5rem;
}

.mvl-role-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(56, 189, 248, 0.1);
  color: var(--mv-accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9375rem;
  margin-bottom: 1rem;
}

.mvl-role-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.5rem;
}

.mvl-role-desc {
  font-size: 0.84375rem;
  color: var(--mv-text-secondary);
  line-height: 1.55;
  margin: 0;
}

.mvl-eval-callout {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--mv-border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
}

.mvl-callout-icon {
  color: var(--mv-accent-purple);
  font-size: 1.15rem;
  margin-top: 0.15rem;
}

.mvl-callout-content {
  font-size: 0.875rem;
  color: var(--mv-text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Section 9 — How We Intend to Measure It (Tracks)
   ========================================================================== */
.mvl-tracks-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .mvl-tracks-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.mvl-track-card {
  background: var(--mv-surface);
  border: 1px solid var(--mv-border);
  border-radius: 14px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  opacity: 1; /* Non-negotiable visibility */
  visibility: visible;
}

.mvl-track-badge {
  font-size: 0.6875rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: #c084fc;
  margin-bottom: 0.5rem;
}

.mvl-track-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

.mvl-track-desc {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--mv-text-secondary);
  margin-bottom: 1.25rem;
}

.mvl-track-criteria {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.8125rem;
  color: #cbd5e1;
}

.mvl-track-criteria li {
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
}

.mvl-track-criteria li i {
  color: var(--mv-accent-purple);
  margin-top: 0.2rem;
}

/* ==========================================================================
   Section 10 — Current Status Bar
   ========================================================================== */
.mvl-stage-bar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  background: var(--mv-surface);
  border: 1px solid var(--mv-border);
  border-radius: 14px;
  padding: 1.5rem;
  margin: 0;
}

@media (min-width: 640px) {
  .mvl-stage-bar {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .mvl-stage-bar {
    grid-template-columns: repeat(4, 1fr);
  }
}

.mvl-stage-cell dt {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--mv-text-muted);
  margin-bottom: 0.35rem;
}

.mvl-stage-cell dd {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #f1f5f9;
  margin: 0;
}

/* ==========================================================================
   Section 11 — Contact & Ending
   ========================================================================== */
.mvl-section-ending {
  padding: 5rem 0 6rem;
}

.mvl-ending-container {
  text-align: center;
  max-width: 840px;
  margin: 0 auto;
}

.mvl-ending-quote {
  font-size: clamp(1.75rem, 3.8vw, 2.5rem);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 3.5rem;
  line-height: 1.25;
}

.mvl-ending-accent {
  color: #c084fc;
}

.mvl-contact-panel {
  background: var(--mv-surface);
  border: 1px solid var(--mv-border);
  border-radius: 18px;
  padding: 2.5rem 1.5rem;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.mvl-contact-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

.mvl-contact-desc {
  font-size: 0.9375rem;
  color: var(--mv-text-secondary);
  max-width: 580px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

.mvl-contact-btn-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}

/* Accessible focus ring */
a:focus-visible,
button:focus-visible {
  outline: 2px solid #c084fc;
  outline-offset: 3px;
}