/* =============================================================
   blu3raven Design System
   Light blue glass · Space Grotesk / Manrope / JetBrains Mono
   Inspired by Material Design 3 color system
   ============================================================= */

:root {
  /* Core palette — light blue glass theme */
  --bg:           #eff8ff;
  --surface:      #ffffff;
  --surface-glass: rgba(255, 255, 255, 0.50);
  --surface-glass-heavy: rgba(255, 255, 255, 0.70);
  --surface-tint: rgba(0, 93, 167, 0.04);
  --primary:      #005da7;
  --primary-dim:  #005192;
  --primary-soft: #68abff;
  --primary-container: rgba(0, 93, 167, 0.08);
  --green:        #1a8a4a;
  --red:          #b31b25;
  --border:       rgba(0, 30, 80, 0.08);
  --border-glass: rgba(255, 255, 255, 0.40);

  /* Backwards-compat aliases (used in inline styles across pages) */
  --navy-deep:    var(--bg);
  --navy-mid:     var(--surface-glass);
  --navy-light:   var(--primary-container);
  --gold:         var(--primary);
  --gold-dim:     rgba(0, 93, 167, 0.08);
  --accent-soft:  #185ca5;
  --text-primary: #1a2530;
  --text-muted:   #4a5568;
  --text-dim:     #6b7589;

  /* Fonts */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Manrope', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Sizing */
  --max-w:        1280px;
  --section-py:   5rem;
  --section-py-sm: 3rem;
  --radius:       1.25rem;
  --radius-lg:    2rem;
  --radius-xl:    3rem;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-primary);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Ambient blobs behind body */
body::before,
body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  z-index: -1;
  pointer-events: none;
}
body::before {
  width: 60vw; height: 60vw;
  top: -20%; left: -15%;
  background: rgba(0, 93, 167, 0.06);
  filter: blur(120px);
}
body::after {
  width: 50vw; height: 50vw;
  bottom: -10%; right: -10%;
  background: rgba(104, 171, 255, 0.08);
  filter: blur(140px);
}

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

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Focus states — WCAG */
:focus-visible {
  outline: 2px solid var(--primary-soft);
  outline-offset: 2px;
  border-radius: 4px;
}

a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
  outline: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.15;
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 1rem; }
h3 { font-size: 1.3rem; }

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

/* --- Glass utility --- */
.glass {
  background: var(--surface-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  box-shadow: 0 8px 32px rgba(0, 30, 80, 0.06);
}

/* --- Layout --- */
.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: var(--section-py) 0;
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.section-tight { padding-top: var(--section-py-sm); padding-bottom: var(--section-py-sm); }

/* Alternating tinted sections for visual rhythm */
.section-tinted {
  background: rgba(0, 93, 167, 0.025);
  padding: var(--section-py) 2rem;
  max-width: none;
  margin: 0;
}
.section-tinted > .section-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 3rem 0;
}

/* --- Eyebrow --- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.75rem;
}

.eyebrow.blue { color: var(--accent-soft); }

/* --- Note --- */
.note {
  font-size: 0.85rem;
  color: var(--text-dim);
  font-style: italic;
}

/* =============================================================
   Navigation — Glass pill
   ============================================================= */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(239, 248, 255, 0.70);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.40);
  box-shadow: 0 4px 24px rgba(0, 30, 80, 0.06);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--text-primary);
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-logo:hover { text-decoration: none; }

.nav-logo-img {
  height: 28px;
  width: auto;
  display: inline-block;
  vertical-align: middle;
  margin-right: 0.5rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
  letter-spacing: -0.01em;
}

.nav-links a:hover { color: var(--primary); }
.nav-links a.active {
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
  padding-bottom: 2px;
}

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  padding: 8px;
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(239, 248, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 2rem;
    gap: 1rem;
  }
  .nav-links.open { display: flex; }
}

.nav-spacer { height: 72px; }

/* =============================================================
   Buttons — Rounded pill style
   ============================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.85rem 2rem;
  border: 1px solid transparent;
  border-radius: 9999px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn:hover { text-decoration: none; }

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-soft));
  color: #ffffff;
  border-color: transparent;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(0, 93, 167, 0.25);
}
.btn-primary:hover {
  box-shadow: 0 12px 32px rgba(0, 93, 167, 0.35);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(0, 93, 167, 0.2);
}

.btn-ghost {
  background: var(--surface-glass);
  color: var(--primary);
  border-color: var(--border);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  border-color: var(--primary);
  background: var(--primary-container);
}

.btn-disabled {
  background: rgba(0, 30, 80, 0.04);
  color: var(--text-dim);
  border-color: rgba(0, 30, 80, 0.06);
  cursor: not-allowed;
  opacity: 0.5;
  pointer-events: none;
}

.arrow { transition: transform 0.2s; display: inline-block; }
.btn:hover .arrow { transform: translateX(3px); }

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
}

/* =============================================================
   Homepage — Hero
   ============================================================= */
.hero {
  padding: 5rem 0 3rem;
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.hero h1 { margin-bottom: 1.25rem; }

.hero p {
  max-width: 60ch;
  color: var(--text-muted);
  font-size: 1.15rem;
  line-height: 1.75;
}

/* =============================================================
   Homepage — Pillars
   ============================================================= */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: var(--max-w);
  margin: 0 auto 4rem;
  padding: 0 2rem;
}

@media (max-width: 900px) {
  .pillars { grid-template-columns: 1fr; }
}

.pillar {
  display: flex;
  flex-direction: column;
  background: var(--surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(0, 30, 80, 0.04);
}

.pillar:hover {
  border-color: var(--primary-soft);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 93, 167, 0.1);
  text-decoration: none;
}

.pillar.featured {
  background: var(--surface-glass-heavy);
  border-color: var(--primary-soft);
  box-shadow: 0 8px 32px rgba(0, 93, 167, 0.08);
}

.pillar-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.pillar-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.pillar-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
  flex: 1;
}

.pillar-foot {
  margin-top: 1.5rem;
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* =============================================================
   Cards (reusable) — Glass cards
   ============================================================= */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

@media (max-width: 900px) {
  .card-grid { grid-template-columns: 1fr; }
}

.card {
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: 0 4px 16px rgba(0, 30, 80, 0.04);
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

/* =============================================================
   Argus — Pain / Answer
   ============================================================= */
.pain-answer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .pain-answer { grid-template-columns: 1fr; }
}

.pain, .answer {
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.pain { border-left: 3px solid var(--red); }
.answer { border-left: 3px solid var(--green); }

.pain h3, .answer h3 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 1rem;
}

.pain h3 { color: var(--red); }
.answer h3 { color: var(--green); }

.pain li, .answer li {
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  padding-left: 1rem;
  position: relative;
  list-style: none;
}

.pain li::before {
  content: '\00d7';
  position: absolute;
  left: 0;
  color: var(--red);
  font-weight: 700;
}

.answer li::before {
  content: '\2192';
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}

/* =============================================================
   The Gap — Before → After rows
   ============================================================= */
.gap-section {
  padding: 6rem 1.5rem;
}

.gap-inner {
  max-width: 820px;
  margin: 0 auto;
}

.gap-rows {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 2.5rem;
}

.gap-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1.5rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid rgba(0, 30, 80, 0.06);
}

.gap-row:last-child {
  border-bottom: none;
}

.gap-before,
.gap-after {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.gap-before p {
  font-size: 0.95rem;
  color: var(--text-dim);
  text-decoration: line-through;
  text-decoration-color: rgba(179, 27, 37, 0.35);
  margin: 0;
}

.gap-after p {
  font-size: 0.95rem;
  color: var(--text-primary);
  font-weight: 500;
  margin: 0;
}

.gap-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.gap-label--before {
  color: var(--red);
  opacity: 0.6;
}

.gap-label--after {
  color: var(--green);
}

.gap-arrow {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary-container);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 600;
  flex-shrink: 0;
}

@media (max-width: 600px) {
  .gap-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
    text-align: center;
  }

  .gap-arrow {
    margin: 0 auto;
    width: 32px;
    height: 32px;
    font-size: 0.9rem;
    transform: rotate(90deg);
  }
}

/* =============================================================
   Argus — How it works (delivery cards)
   ============================================================= */
.delivery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
  counter-reset: step;
}

@media (max-width: 900px) {
  .delivery-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 520px) {
  .delivery-grid { grid-template-columns: 1fr; }
}

.delivery-card {
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  box-shadow: 0 2px 12px rgba(0, 30, 80, 0.03);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.delivery-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-soft));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.delivery-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 30, 80, 0.08);
  border-color: rgba(0, 93, 167, 0.12);
}

.delivery-card:hover::before { opacity: 1; }

.delivery-card .step-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--primary);
  letter-spacing: 0.14em;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.delivery-card .step-num-big {
  font-family: var(--font-display);
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  opacity: 0.1;
  margin-bottom: 0.25rem;
}

.delivery-card .step-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.75rem;
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: var(--primary-container);
  border-radius: 4px;
}

.delivery-card h3 {
  margin-bottom: 0.4rem;
  font-size: 1.05rem;
  line-height: 1.3;
}

.delivery-card p {
  color: var(--text-dim);
  font-size: 0.82rem;
  line-height: 1.5;
  margin: 0;
}

/* =============================================================
   Argus — Feedback Loop (3-step horizontal)
   ============================================================= */
.loop {
  margin-top: 3rem;
}

.loop-steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
}

.loop-step {
  flex: 1;
  max-width: 280px;
  text-align: center;
  padding: 2rem 1.5rem;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--radius);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.loop-step:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 30, 80, 0.08);
  border-color: rgba(0, 93, 167, 0.15);
}

.loop-step-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--primary-container);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
}

.loop-step h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text-primary);
}

.loop-step p {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.55;
  margin: 0;
}

.loop-connector {
  display: flex;
  align-items: center;
  padding-top: 3rem;
  flex-shrink: 0;
}

.loop-return {
  position: relative;
  margin-top: 1rem;
  text-align: center;
}

.loop-return-svg {
  width: 100%;
  max-width: 780px;
  height: 48px;
  margin: 0 auto;
  display: block;
}

.loop-return-label {
  display: inline-block;
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary-soft);
  padding: 0.3rem 1rem;
  background: rgba(0, 93, 167, 0.04);
  border: 1px solid rgba(0, 93, 167, 0.1);
  border-radius: 100px;
}

@media (max-width: 768px) {
  .loop-steps {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }

  .loop-step {
    max-width: 100%;
    width: 100%;
  }

  .loop-connector {
    padding: 0.5rem 0;
    transform: rotate(90deg);
  }

  .loop-return-svg {
    display: none;
  }

  .loop-return-label {
    margin-top: 1.5rem;
  }
}

/* =============================================================
   Argus — Perceptual map
   ============================================================= */
.perc-canvas {
  position: relative;
  width: 100%;
  max-width: 700px;
  aspect-ratio: 1;
  margin: 2rem auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface-glass);
  backdrop-filter: blur(8px);
}

.perc-canvas .axis-x,
.perc-canvas .axis-y {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-transform: uppercase;
}

.perc-canvas .axis-x {
  bottom: -1.5rem;
  left: 50%;
  transform: translateX(-50%);
}

.perc-canvas .axis-y {
  left: -2.5rem;
  top: 50%;
  transform: translateY(-50%) rotate(-90deg);
}

.perc-dot {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 2px 8px rgba(0, 30, 80, 0.15);
}

.perc-dot .perc-label {
  position: absolute;
  top: -1.4rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  white-space: nowrap;
  color: var(--text-muted);
  font-weight: 600;
}

/* =============================================================
   Argus — Economics table
   ============================================================= */
.econ-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 2.5rem;
  font-size: 0.88rem;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--radius);
  overflow: hidden;
}

.econ-table th,
.econ-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid rgba(0, 30, 80, 0.06);
  text-align: center;
  vertical-align: middle;
}

.econ-table tr:last-child td {
  border-bottom: none;
}

.econ-table th {
  background: rgba(0, 93, 167, 0.03);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-dim);
  font-weight: 600;
  padding: 1.1rem 1.25rem;
}

.econ-table th.highlight {
  color: var(--primary);
  background: rgba(0, 93, 167, 0.06);
}

.econ-table td.label-col {
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-align: left;
  font-weight: 500;
}

.econ-table td.highlight {
  background: rgba(0, 93, 167, 0.02);
  font-weight: 500;
  color: var(--text-primary);
}

.econ-table td.check {
  color: var(--green);
  font-size: 1.5rem;
  font-weight: 700;
}

.econ-table td.xmark {
  color: var(--red);
  font-size: 1.3rem;
  font-weight: 700;
  opacity: 0.4;
}

.econ-table tbody tr {
  transition: background 0.2s ease;
}

.econ-table tbody tr:hover {
  background: rgba(0, 93, 167, 0.02);
}

@media (max-width: 720px) {
  .econ-table { font-size: 0.78rem; }
  .econ-table th, .econ-table td { padding: 0.65rem 0.5rem; }
}

/* =============================================================
   Research — Articles & Tags
   ============================================================= */
.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.tag-filter button {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 9999px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}

.tag-filter button:hover,
.tag-filter button.active {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-container);
}

.article-list {
  display: grid;
  gap: 1.5rem;
}

.article {
  display: block;
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-decoration: none;
  transition: all 0.25s ease;
  box-shadow: 0 4px 16px rgba(0, 30, 80, 0.04);
}

.article:hover {
  border-color: var(--primary-soft);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 93, 167, 0.08);
  text-decoration: none;
}

.article-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.article h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.article p {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.article-tags {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

.article-tags span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 9999px;
  color: var(--text-dim);
}

/* =============================================================
   Research — Post layout
   ============================================================= */
.post {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--section-py) 1.5rem;
}

.post h1 { margin-bottom: 0.5rem; }

.post .post-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 2rem;
}

.post h2 { margin-top: 2.5rem; font-size: 1.5rem; }
.post h3 { margin-top: 2rem; font-size: 1.2rem; }

.post p {
  color: var(--text-muted);
  margin-top: 1rem;
  line-height: 1.75;
}

.post ul, .post ol {
  margin-top: 1rem;
  padding-left: 1.5rem;
  color: var(--text-muted);
}

.post li { margin-bottom: 0.5rem; line-height: 1.65; }

.post code {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  background: var(--primary-container);
  padding: 0.15rem 0.4rem;
  border-radius: 0.3rem;
}

.post pre {
  background: #1a2530;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  overflow-x: auto;
  margin-top: 1rem;
  color: #e8ecf4;
}

.post pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
}

.post blockquote {
  border-left: 3px solid var(--primary);
  padding: 0.75rem 1.5rem;
  margin-top: 1rem;
  color: var(--text-muted);
  font-style: italic;
  background: var(--primary-container);
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* =============================================================
   Contact — Grid
   ============================================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 2rem;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-info {
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.contact-info h3 { margin-bottom: 1rem; }

.contact-info p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 0.75rem;
  line-height: 1.6;
}

/* =============================================================
   Forms
   ============================================================= */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.92rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-soft);
  box-shadow: 0 0 0 3px rgba(0, 93, 167, 0.1);
}

.form-group textarea { resize: vertical; min-height: 100px; }

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%238a94a6' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* =============================================================
   Footer
   ============================================================= */
.footer {
  background: rgba(0, 30, 80, 0.02);
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
}

@media (max-width: 768px) {
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.footer-tagline {
  color: var(--text-dim);
  font-size: 0.85rem;
}

.footer-coming-soon {
  color: var(--text-dim);
  opacity: 0.5;
  font-size: 0.85rem;
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.5rem; }

.footer-col a {
  color: var(--text-muted);
  font-size: 0.88rem;
  text-decoration: none;
  transition: color 0.2s;
}

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

.footer-bottom {
  max-width: var(--max-w);
  margin: 2rem auto 0;
  padding: 1.5rem 2rem 0;
  border-top: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* =============================================================
   Utility
   ============================================================= */
.two-col-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .two-col-grid { grid-template-columns: 1fr; }
}

.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

/* =============================================================
   ADDITIONS — Phase 2: vm-aggregator, demo, pilot, comparison
   ============================================================= */

/* --- Media placeholder pattern --- */
.media-frame {
  position: relative;
  background: var(--surface-glass);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 32px rgba(0, 30, 80, 0.06);
}

.media-frame.aspect-video { aspect-ratio: 16 / 9; }
.media-frame.aspect-wide  { aspect-ratio: 21 / 9; }
.media-frame.aspect-square { aspect-ratio: 1 / 1; }

.media-frame .placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1.5rem;
  z-index: 1;
}

.media-frame .placeholder .ph-icon {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.media-frame .placeholder .ph-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--text-muted);
  font-style: italic;
}

.media-frame img,
.media-frame video {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.media-frame img:not([src]),
.media-frame img[src=""] { display: none; }

.media-frame .placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(0, 93, 167, 0.08) 1px, transparent 1px);
  background-size: 16px 16px;
  opacity: 0.6;
  z-index: -1;
}

/* --- Demo section grid --- */
.demo-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

@media (max-width: 900px) {
  .demo-grid { grid-template-columns: 1fr; }
}

.demo-grid .demo-secondary {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 1.5rem;
}

.demo-caption {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-top: 0.75rem;
  text-transform: uppercase;
}

/* --- Demo hero (full-width featured screenshot) --- */
.demo-hero {
  margin-top: 2.5rem;
  text-align: center;
}

.demo-hero .media-frame {
  border: 2px solid rgba(0, 93, 167, 0.12);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 30, 80, 0.1);
}

.demo-hero .media-frame img {
  border-radius: 0;
}

.demo-hero-caption {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1.25rem;
}

.demo-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  background: var(--primary-container);
  color: var(--primary);
  border: 1px solid rgba(0, 93, 167, 0.12);
}

.demo-tag--critical {
  background: rgba(179, 27, 37, 0.08);
  color: var(--red);
  border-color: rgba(179, 27, 37, 0.15);
}

.demo-hero-desc {
  max-width: 65ch;
  margin: 1rem auto 0;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --- Demo trio (3-column secondary screenshots) --- */
.demo-trio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.demo-trio .media-frame {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(0, 30, 80, 0.06);
  box-shadow: 0 4px 16px rgba(0, 30, 80, 0.04);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.demo-trio .media-frame:hover {
  box-shadow: 0 12px 40px rgba(0, 30, 80, 0.08);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .demo-trio { grid-template-columns: 1fr; }
}

/* --- Lightbox --- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  padding: 2rem;
}

.lightbox.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 8px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.4);
  transform: scale(0.95);
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.lightbox.active .lightbox-img {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.lightbox-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* --- Sample artifact code block (dark inset) --- */
.artifact {
  background: #1a2530;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  margin-top: 2rem;
  overflow: hidden;
}

.artifact-head {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.artifact-head .label { color: var(--primary-soft); }
.artifact-head .meta  { color: #6a7a8a; }

.artifact pre {
  margin: 0;
  padding: 1.5rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.65;
  color: #e8ecf4;
}

.artifact .kw    { color: #68abff; }
.artifact .str   { color: #7dcea0; }
.artifact .com   { color: #6a7a8a; font-style: italic; }

/* --- Editions / pricing table --- */
.editions {
  width: 100%;
  border-collapse: collapse;
  margin-top: 2rem;
  font-size: 0.92rem;
  border-radius: var(--radius);
  overflow: hidden;
}

.editions th, .editions td {
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  text-align: center;
  vertical-align: middle;
}

.editions th {
  background: var(--surface-glass);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  font-weight: 600;
}

.editions th.featured {
  background: var(--primary-container);
  color: var(--primary);
  border-color: var(--primary-soft);
}

.editions td.label {
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-align: left;
  background: rgba(0, 93, 167, 0.02);
}

.editions td.featured {
  background: rgba(0, 93, 167, 0.03);
  border-left-color: var(--primary-soft);
  border-right-color: var(--primary-soft);
}

.editions .check {
  color: var(--green);
  font-weight: 700;
}
.editions .dash {
  color: var(--text-dim);
}
.editions .price {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--text-primary);
  font-weight: 700;
}

@media (max-width: 720px) {
  .editions { font-size: 0.78rem; }
  .editions th, .editions td { padding: 0.55rem 0.4rem; }
}

/* --- Pilot page CTA card --- */
.pilot-card {
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: 0 4px 16px rgba(0, 30, 80, 0.04);
}

.pilot-card.featured {
  background: var(--surface-glass-heavy);
  border-color: var(--primary-soft);
  box-shadow: 0 8px 32px rgba(0, 93, 167, 0.08);
}

.pilot-card h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.pilot-card .commitments {
  list-style: none;
  margin: 0;
  padding: 0;
}

.pilot-card .commitments li {
  padding-left: 1.5rem;
  position: relative;
  margin-bottom: 0.6rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.pilot-card .commitments li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

/* --- Install code block (dark) --- */
.install-block {
  background: #1a2530;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.install-block pre {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.65;
  color: #e8ecf4;
  overflow-x: auto;
  margin: 0;
}

.install-block .comment { color: #6a7a8a; font-style: italic; }

/* =============================================================
   Homepage — Argus featured section
   ============================================================= */
.argus-feature {
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem 4rem;
}

.argus-feature-inner {
  background: var(--surface-glass-heavy);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 3rem;
  box-shadow: 0 16px 48px rgba(0, 93, 167, 0.08);
  position: relative;
  overflow: hidden;
}

.argus-feature-inner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 100%;
  background: radial-gradient(circle, rgba(0, 93, 167, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.argus-feature-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

@media (max-width: 900px) {
  .argus-feature-grid { grid-template-columns: 1fr; }
}

.argus-feature-content { position: relative; z-index: 1; }

.argus-capabilities {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.argus-cap {
  padding: 1rem;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.argus-cap h4 {
  font-size: 0.92rem;
  margin-bottom: 0.25rem;
}

.argus-cap p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

@media (max-width: 600px) {
  .argus-capabilities { grid-template-columns: 1fr; }
}

/* =============================================================
   Data Flow Ecosystem Diagram
   ============================================================= */
.dataflow {
  padding: var(--section-py) 0;
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.dataflow-diagram {
  display: grid;
  grid-template-columns: 1fr auto 1.4fr auto 1fr;
  gap: 0;
  align-items: center;
  margin-top: 2.5rem;
}

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

.dataflow-col-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
  text-align: center;
}

.dataflow-node {
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 0.85rem 1.15rem;
  box-shadow: 0 2px 12px rgba(0, 30, 80, 0.04);
  transition: all 0.25s ease;
}

.dataflow-node:hover {
  border-color: var(--primary-soft);
  box-shadow: 0 4px 20px rgba(0, 93, 167, 0.08);
  transform: translateY(-2px);
}

.dataflow-node .node-title {
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
}

.dataflow-node .node-desc {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-top: 0.15rem;
}

.dataflow-node--oss {
  border-left: 3px solid var(--green);
}

.dataflow-node--oss .node-tag {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
  font-weight: 600;
}

.dataflow-node--soon {
  border-left: 3px dashed #999;
  opacity: 0.45;
  filter: grayscale(1);
}

.dataflow-node--soon .node-tag {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #999;
  font-weight: 600;
}

/* Center brain card */
.dataflow-brain {
  background: var(--surface-glass-heavy);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 2px solid var(--primary-soft);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  text-align: center;
  position: relative;
  box-shadow: 0 8px 40px rgba(0, 93, 167, 0.12);
}

.dataflow-brain::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: calc(var(--radius-lg) + 4px);
  box-shadow: 0 0 0 0 rgba(0, 93, 167, 0.25);
  animation: brain-pulse 2.5s ease-in-out infinite;
  pointer-events: none;
}

@keyframes brain-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 93, 167, 0.2); }
  50% { box-shadow: 0 0 0 12px rgba(0, 93, 167, 0); }
}

.dataflow-brain .brain-name {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.25rem;
}

.dataflow-brain .brain-subtitle {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary-dim);
  margin-bottom: 0.75rem;
}

.dataflow-brain .brain-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Connector arrows between columns */
.dataflow-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 0.5rem;
}

.dataflow-connector .connector-line {
  width: 2.5rem;
  border-top: 2px dashed var(--primary-soft);
  position: relative;
}

.dataflow-connector .connector-line::after {
  content: '';
  position: absolute;
  right: -1px;
  top: -5px;
  border: 5px solid transparent;
  border-left: 6px solid var(--primary-soft);
}

/* Vertical arrow (mobile only) */
.dataflow-arrow-down {
  display: none;
  text-align: center;
  padding: 0.75rem 0;
  font-size: 1.5rem;
  color: var(--primary-soft);
}

@media (max-width: 900px) {
  .dataflow-diagram {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .dataflow-connector { display: none; }
  .dataflow-arrow-down { display: block; }
  .dataflow-brain { margin: 0; }
}

/* =============================================================
   Product Showcase — AhnLab-style tabs
   ============================================================= */
.showcase {
  padding: var(--section-py) 0;
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.showcase-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 2rem;
  align-items: start;
  margin-top: 2rem;
}

.showcase-tabs {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  position: sticky;
  top: 88px;
}

.showcase-tab {
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-left: 3px solid transparent;
  border-radius: var(--radius);
  padding: 1.15rem 1.35rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: inherit;
  width: 100%;
}

.showcase-tab:hover {
  border-color: var(--border);
  border-left-color: var(--primary-soft);
  box-shadow: 0 4px 16px rgba(0, 30, 80, 0.06);
}

.showcase-tab.active {
  background: var(--surface-glass-heavy);
  border-color: var(--primary-soft);
  border-left-color: var(--primary);
  box-shadow: 0 8px 32px rgba(0, 93, 167, 0.08);
}

.showcase-tab-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.3rem;
}

.showcase-tab-name {
  display: block;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.15rem;
}

.showcase-tab-summary {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Panels */
.showcase-panel {
  display: none;
}

.showcase-panel.active {
  display: block;
  animation: panelFadeIn 0.3s ease;
}

@keyframes panelFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.showcase-panel-inner {
  background: var(--surface-glass-heavy);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: 0 12px 48px rgba(0, 30, 80, 0.06);
}

.showcase-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 600;
  padding: 0.3rem 0.85rem;
  border-radius: 9999px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.showcase-badge--product {
  background: var(--primary-container);
  color: var(--primary);
}

.showcase-badge--free {
  background: rgba(26, 138, 74, 0.08);
  color: var(--green);
}

.showcase-panel-inner h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.showcase-panel-inner > p {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  max-width: 55ch;
}

.showcase-panel-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.showcase-posts {
  list-style: none;
  margin: 1rem 0;
}

.showcase-posts li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}

.showcase-posts a {
  font-weight: 500;
  color: var(--text-primary);
  transition: color 0.2s;
}

.showcase-posts a:hover {
  color: var(--primary);
}

.showcase-note {
  font-size: 0.82rem;
  color: var(--text-dim);
  font-style: italic;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

@media (max-width: 768px) {
  .showcase-grid {
    grid-template-columns: 1fr;
  }
  .showcase-tabs {
    flex-direction: row;
    overflow-x: auto;
    gap: 0.5rem;
    position: static;
    padding-bottom: 0.5rem;
    -webkit-overflow-scrolling: touch;
  }
  .showcase-tab {
    min-width: 200px;
    flex-shrink: 0;
  }
  .showcase-panel-inner {
    padding: 1.5rem;
  }
}

/* =============================================================
   Mobile — Comprehensive responsive fixes
   ============================================================= */
@media (max-width: 768px) {
  /* Hero */
  .hero {
    padding: 3rem 0 2rem;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
  .hero h1 { font-size: 1.8rem; }
  .hero p { font-size: 1rem; }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    text-align: center;
    justify-content: center;
  }

  /* Sections */
  .section {
    padding: var(--section-py-sm) 1.25rem;
  }
  .section-tinted {
    padding: var(--section-py-sm) 1.25rem;
  }
  .section-tinted .section-inner {
    padding: 0;
  }
  h2 { font-size: 1.4rem; }

  /* Dataflow */
  .dataflow {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
    padding-top: var(--section-py-sm);
    padding-bottom: var(--section-py-sm);
  }

  /* Gap rows */
  .gap-section { padding: 3rem 1.25rem; }
  .gap-inner { max-width: 100%; }
  .gap-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
    text-align: center;
  }
  .gap-arrow {
    margin: 0 auto;
    width: 32px;
    height: 32px;
    font-size: 0.9rem;
    transform: rotate(90deg);
  }
  .gap-before p,
  .gap-after p { font-size: 0.88rem; }

  /* Delivery cards */
  .delivery-grid {
    grid-template-columns: 1fr;
  }
  .delivery-card .step-num-big { font-size: 2.4rem; }

  /* Loop */
  .loop-steps {
    flex-direction: column;
    align-items: center;
    gap: 0;
  }
  .loop-step {
    max-width: 100%;
    width: 100%;
  }
  .loop-connector {
    padding: 0.5rem 0;
    transform: rotate(90deg);
  }
  .loop-return-svg { display: none; }
  .loop-return-label { margin-top: 1.5rem; }

  /* Demo */
  .demo-hero .media-frame {
    border-radius: var(--radius);
  }
  .demo-hero-caption { gap: 0.35rem; }
  .demo-tag { font-size: 0.58rem; padding: 0.25rem 0.5rem; }
  .demo-hero-desc { font-size: 0.85rem; }
  .demo-trio { grid-template-columns: 1fr; }

  /* Economics table */
  .econ-table { font-size: 0.78rem; }
  .econ-table th,
  .econ-table td { padding: 0.65rem 0.5rem; }

  /* Pilot CTA */
  .pilot-card { padding: 1.5rem !important; }

  /* Footer */
  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }

  .gap-rows { margin-top: 1.5rem; }
  .gap-row { padding: 1rem 0; }

  .delivery-card { padding: 1.25rem; }

  .demo-hero-caption {
    flex-direction: column;
    align-items: center;
  }

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

  .nav-inner { padding: 0 1rem; }
  .nav-inner { height: 60px; }
  .nav-spacer { height: 60px; }
  .nav-logo-img { height: 24px; }
}

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

/* =============================================================
   Print styles
   ============================================================= */
@media print {
  .nav, .nav-spacer, .flywheel-svg { display: none; }
  body::before, body::after { display: none; }
  .section, .section-tinted { padding: 1rem 0; }
}