/* =========================================================================
   Daedalus — Marketing site styles
   Dark cockpit aesthetic, full-bleed compositions, generous spacing
   ========================================================================= */

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--surface-0);
  color: var(--fg-1);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: 0; color: inherit; }

::selection { background: var(--brand-cyan); color: var(--fg-on-cyan); }

/* ---------- Layout shell ---------- */
.dx-page {
  min-height: 100vh;
  background: var(--surface-0);
}

.dx-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ========== NAV ========== */
.dx-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: transparent;
  border-bottom: 1px solid transparent;
  box-shadow: none;
  transition: background 240ms var(--ease-out), border-color 240ms var(--ease-out), box-shadow 240ms var(--ease-out), backdrop-filter 240ms var(--ease-out);
}
.dx-nav.is-scrolled {
  background: rgba(15, 17, 22, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 18px rgba(15, 17, 22, 0.18);
}
.dx-nav.is-scrolled .dx-nav-logo img { filter: invert(1) brightness(2); }
.dx-nav.is-scrolled .dx-nav-links { color: #fff; }
.dx-nav.is-scrolled .dx-nav-links a { color: #fff; }
.dx-nav.is-scrolled .dx-nav-links a:hover { color: #fff; opacity: 0.85; }
.dx-nav.is-scrolled .dx-nav-trigger { color: #fff; }
.dx-nav.is-scrolled .dx-nav-trigger:hover,
.dx-nav.is-scrolled .dx-nav-trigger.is-open,
.dx-nav.is-scrolled .dx-nav-trigger.is-current { color: #fff; opacity: 0.85; }
.dx-nav.is-scrolled .dx-nav-links a.is-current { color: #fff; }
.dx-nav.is-scrolled .dx-btn--ghost { color: #fff; border-color: rgba(255,255,255,0.25); }
.dx-nav.is-scrolled .dx-btn--ghost:hover { background: rgba(255,255,255,0.10); border-color: rgba(255,255,255,0.45); }

/* ============================================================
   Smart dropdown nav (megamenu)
   ============================================================ */
.dx-nav-trigger {
  appearance: none;
  background: transparent;
  border: 0;
  font-family: inherit;
  font: inherit;
  cursor: pointer;
  color: var(--fg-2);
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0;
  transition: color 200ms var(--ease-out);
}
.dx-nav-trigger:hover, .dx-nav-trigger.is-open, .dx-nav-trigger.is-current { color: var(--fg-1); }
.dx-nav-links a.is-current { color: var(--fg-1); }

.dx-nav-panel {
  position: absolute;
  left: 0; right: 0; top: 100%;
  background: rgba(255, 255, 255, 0.98);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 16px 36px rgba(15, 17, 22, 0.08);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 180ms var(--ease-out), transform 180ms var(--ease-out), visibility 0s linear 180ms;
  z-index: 49;
}
.dx-nav-panel.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity 180ms var(--ease-out), transform 180ms var(--ease-out), visibility 0s linear;
}
.dx-nav-panel-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 280px;
  gap: 40px;
  padding: 28px 32px;
}
.dx-nav-col-h {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}
.dx-nav-col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 2px; }
.dx-nav-col li a {
  display: grid;
  gap: 2px;
  padding: 9px 10px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--fg-1);
  transition: background 150ms var(--ease-out);
}
.dx-nav-col li a:hover { background: var(--surface-2); }
.dx-nav-col-t { font-size: 14px; font-weight: 600; color: var(--fg-1); line-height: 1.3; }
.dx-nav-col-d { font-size: 12px; color: var(--fg-3); line-height: 1.4; }
.dx-nav-col--cta {
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 18px;
  display: grid;
  align-content: start;
  gap: 10px;
}
.dx-nav-col--cta p { font-size: 13px; color: var(--fg-2); line-height: 1.5; margin: 0 0 8px; }
.dx-nav-col--cta .dx-btn { justify-self: start; }

/* Scrolled state for dropdown panels */
.dx-nav.is-scrolled .dx-nav-panel {
  background: rgba(15, 17, 22, 0.95);
  border-color: rgba(255,255,255,0.08);
}
.dx-nav.is-scrolled .dx-nav-col-h { color: rgba(255,255,255,0.55); border-bottom-color: rgba(255,255,255,0.08); }
.dx-nav.is-scrolled .dx-nav-col li a { color: #fff; }
.dx-nav.is-scrolled .dx-nav-col li a:hover { background: rgba(255,255,255,0.06); }
.dx-nav.is-scrolled .dx-nav-col-t { color: #fff; }
.dx-nav.is-scrolled .dx-nav-col-d { color: rgba(255,255,255,0.6); }
.dx-nav.is-scrolled .dx-nav-col--cta {
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.08);
}
.dx-nav.is-scrolled .dx-nav-col--cta p { color: rgba(255,255,255,0.75); }

@media (max-width: 1020px) {
  .dx-nav-panel { display: none; }
}
.dx-hero { position: relative; isolation: isolate; }
.dx-hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: var(--surface-0);
}
.dx-hero-bg::before { content: none; }
.dx-hero-bg::after { content: none; }
.dx-hero-bg-cloud, .dx-hero-bg-cloud--2, .dx-hero-bg-cloud--3, .dx-hero-bg-stars, .dx-hero-bg-trail { display: none; }
.dx-hero-bg-cloud--2 {
  top: 50%;
  height: 45%;
  opacity: 0.35;
  background:
    radial-gradient(ellipse 460px 60px at 20% 50%, rgba(140,180,230,0.40), transparent 70%),
    radial-gradient(ellipse 380px 50px at 50% 55%, rgba(110,150,200,0.35), transparent 70%),
    radial-gradient(ellipse 540px 80px at 80% 45%, rgba(160,200,240,0.40), transparent 70%);
  filter: blur(8px);
  animation: dx-clouds-drift 140s linear infinite reverse;
}
.dx-hero-bg-cloud--3 {
  top: 18%;
  height: 35%;
  opacity: 0.25;
  background:
    radial-gradient(ellipse 720px 40px at 30% 50%, rgba(200,220,255,0.30), transparent 70%),
    radial-gradient(ellipse 580px 30px at 70% 55%, rgba(180,210,255,0.25), transparent 70%);
  filter: blur(5px);
  animation: dx-clouds-drift 200s linear infinite;
}
@keyframes dx-clouds-drift {
  0%   { transform: translateX(0); }
  100% { transform: translateX(25%); }
}
/* stars */
.dx-hero-bg-stars {
  position: absolute; inset: 0 0 50% 0; z-index: 0;
  background-image:
    radial-gradient(1px 1px at 18% 22%, rgba(255,255,255,0.85), transparent),
    radial-gradient(1px 1px at 32% 14%, rgba(255,255,255,0.6),  transparent),
    radial-gradient(1.5px 1.5px at 47% 28%, rgba(255,255,255,0.85), transparent),
    radial-gradient(1px 1px at 62% 12%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 75% 30%, rgba(255,255,255,0.7), transparent),
    radial-gradient(1.5px 1.5px at 88% 18%, rgba(255,255,255,0.9), transparent),
    radial-gradient(1px 1px at 8% 36%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1px 1px at 25% 8%, rgba(255,255,255,0.7), transparent),
    radial-gradient(1px 1px at 55% 6%, rgba(255,255,255,0.8), transparent),
    radial-gradient(1px 1px at 92% 36%, rgba(255,255,255,0.55), transparent);
  animation: dx-twinkle 4s ease-in-out infinite alternate;
}
@keyframes dx-twinkle {
  0%   { opacity: 0.55; }
  100% { opacity: 1; }
}
/* contrail (a slow plane crossing the sky) */
.dx-hero-bg-trail {
  position: absolute;
  top: 30%; left: -10%;
  z-index: 3;
  width: 120%;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.85) 48%, rgba(255,255,255,0.95) 50%, transparent 70%);
  filter: blur(0.5px);
  opacity: 0;
  animation: dx-contrail 24s linear infinite;
}
@keyframes dx-contrail {
  0%   { transform: translate(-30%, 0) rotate(-3deg); opacity: 0; }
  10%  { opacity: 0.9; }
  85%  { opacity: 0.8; }
  100% { transform: translate(40%, 30vh) rotate(-3deg); opacity: 0; }
}
.dx-hero-bg video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
  mix-blend-mode: screen;
  z-index: 2;
}

@media (prefers-reduced-motion: reduce) {
  .dx-hero-bg-cloud, .dx-hero-bg-cloud--2, .dx-hero-bg-cloud--3,
  .dx-hero-bg-trail, .dx-hero-bg-stars { animation: none; }
}
.dx-nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 96px;
}
.dx-nav-logo { display: flex; align-items: center; gap: 10px; height: 100%; padding: 16px 0; }
.dx-nav-logo img { height: 100%; width: auto; display: block; min-height: 56px; }
.dx-nav-links {
  display: flex; gap: 22px;
  font-size: var(--fs-body-sm);
  font-weight: 600;
  color: var(--fg-2);
  white-space: nowrap;
  align-items: center;
}
.dx-nav-links > a,
.dx-nav-links > button {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0;
  margin: 0;
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  line-height: 1;
  color: var(--fg-2);
  background: transparent;
  border: 0;
  cursor: pointer;
  text-decoration: none;
}
.dx-nav-links > a:hover,
.dx-nav-links > button:hover { color: var(--fg-1); }
.dx-nav-links > a.is-current,
.dx-nav-links > button.is-current { color: var(--fg-1); }
.dx-nav-links a { transition: color var(--dur-state) var(--ease-out); }
.dx-nav-links a:hover { color: var(--brand-cyan); }
.dx-nav-cta { display: flex; gap: 12px; align-items: center; margin-left: 28px; }
.dx-nav-cta .dx-lang { margin-right: 4px; }
.dx-nav-cta .dx-btn { padding: 8px 16px; font-size: 13px; }

/* Nav button overrides on white bar */
.dx-nav .dx-btn--ghost {
  color: var(--fg-1);
  border-color: var(--border-default);
}
.dx-nav .dx-btn--ghost:hover {
  background: rgba(0, 0, 0, 0.10);
  border-color: rgba(0, 0, 0, 0.48);
}
.dx-nav .dx-btn--primary {
  background: var(--surface-0);
  color: var(--brand-cyan);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.20), 0 6px 18px rgba(0, 0, 0, 0.22);
}
.dx-nav .dx-btn--primary:hover {
  background: var(--brand-cyan-2);
  color: #FFFFFF;
  box-shadow: 0 0 0 1px rgba(212,101,28,0.30), 0 10px 24px rgba(212,101,28,0.25);
}
.dx-nav .dx-btn svg { width: 18px !important; height: 18px !important; }

/* ---------- Buttons ---------- */
.dx-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 12px 22px;
  font-size: var(--fs-body-sm);
  font-weight: 600;
  border-radius: var(--radius-pill);
  transition: all var(--dur-state) var(--ease-out);
  white-space: nowrap;
  letter-spacing: -0.005em;
}
.dx-btn--primary {
  background: var(--brand-cyan);
  color: var(--fg-on-cyan);
  box-shadow: 0 0 0 1px rgba(212,101,28,0.35), 0 8px 24px rgba(212,101,28,0.22);
}
.dx-btn--primary:hover {
  background: var(--brand-cyan-2);
  color: var(--fg-on-cyan);
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px rgba(212,101,28,0.45), 0 12px 32px rgba(212,101,28,0.30);
}
.dx-btn--ghost {
  color: var(--fg-1);
  border: 1px solid var(--border-default);
}
.dx-btn--ghost:hover {
  background: var(--surface-2);
  border-color: var(--border-strong);
  color: var(--fg-1);
}
.dx-btn--lg { padding: 16px 28px; font-size: var(--fs-body); }

/* ===== Accessibility — visible keyboard focus (site-wide) ===== */
:focus-visible {
  outline: 2px solid var(--brand-cyan);
  outline-offset: 2px;
  border-radius: 4px;
}
a:focus-visible, button:focus-visible, .dx-btn:focus-visible,
input:focus-visible, select:focus-visible, textarea:focus-visible,
[tabindex]:focus-visible, [role="button"]:focus-visible {
  outline: 2px solid var(--brand-cyan);
  outline-offset: 2px;
}
/* Don't show the ring on mouse click, only keyboard */
:focus:not(:focus-visible) { outline: none; }

/* ========== HERO ========== */
.dx-hero {
  position: relative;
  padding: 0 0 80px;
  overflow: hidden;
  background: transparent;
}
.dx-hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
}
.dx-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand-cyan);
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: rgba(61,216,232,0.08);
  border: 1px solid rgba(61,216,232,0.20);
}
.dx-eyebrow::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--brand-cyan);
  box-shadow: 0 0 8px var(--brand-cyan);
}
.dx-hero-title {
  font-size: clamp(48px, 6vw, 88px);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.035em;
  margin-top: 24px;
  text-wrap: balance;
}
.dx-hero-title em {
  font-style: normal;
  background: linear-gradient(180deg, var(--brand-cyan) 0%, var(--brand-cyan-3) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.dx-hero-sub {
  font-size: 19px;
  line-height: 1.55;
  color: var(--fg-2);
  margin-top: 24px;
  max-width: 540px;
  text-wrap: pretty;
}
.dx-hero-ctas {
  display: flex; gap: 14px;
  margin-top: 36px;
  align-items: center;
}
.dx-hero-meta {
  display: flex; gap: 28px; align-items: center;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--border-subtle);
  font-size: var(--fs-body-sm);
  color: var(--fg-3);
}
.dx-hero-meta strong {
  color: var(--fg-1);
  font-family: var(--font-mono);
  font-weight: 500;
}

/* ---------- Hero visual: cockpit panel mock ---------- */
.dx-hero-visual {
  position: relative;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-default);
  box-shadow: var(--e3);
  background: var(--surface-1);
}
.dx-hero-photo {
  position: absolute;
  inset: 0;
  background: var(--surface-1);
}
.dx-hero-photo::before { content: none; }
.dx-hero-photo::after { content: none; }
.dx-hero-hsi {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 78%;
  height: auto;
  transform: translate(-50%, -54%);
  pointer-events: none;
  filter: drop-shadow(0 0 24px rgba(61,216,232,0.15));
}
.dx-hero-instruments {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 24px;
  padding: 24px;
  align-items: end;
}
.dx-instr {
  background: rgba(5,12,24,0.85);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  backdrop-filter: blur(6px);
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-self: end;
  box-shadow: var(--e1);
}
.dx-instr-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.dx-instr-value {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 500;
  color: var(--brand-cyan);
  letter-spacing: -0.02em;
  line-height: 1;
}
.dx-instr-unit {
  font-size: 11px;
  color: var(--fg-3);
  margin-left: 2px;
}
.dx-instr--amber .dx-instr-value { color: var(--brand-amber); }
/* lower-right: an attitude readout */
.dx-instr--ai {
  grid-column: 1 / -1;
  display: flex; flex-direction: row;
  justify-content: space-between;
  align-items: center;
  align-self: end;
}
.dx-instr-ai-bar {
  flex: 1;
  margin: 0 16px;
  height: 6px;
  border-radius: 3px;
  background: var(--surface-inset);
  overflow: hidden;
  position: relative;
}
.dx-instr-ai-fill {
  position: absolute;
  inset: 0;
  width: 64%;
  background: linear-gradient(90deg, var(--brand-cyan-3), var(--brand-cyan));
  border-radius: 3px;
}

/* ---------- LOGO STRIP ---------- */
.dx-strip {
  padding: 32px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}
.dx-strip-label {
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 24px;
}
.dx-strip-row {
  display: flex; justify-content: space-between; align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}
.dx-strip-item {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 600;
  color: var(--fg-3);
  letter-spacing: -0.02em;
  opacity: 0.75;
  transition: opacity var(--dur-state) var(--ease-out);
}
.dx-strip-item:hover { opacity: 1; color: var(--fg-1); }
.dx-strip-item--mono { font-family: var(--font-mono); font-weight: 500; font-size: 18px; letter-spacing: 0.04em; }

/* ========== SECTION ========== */
.dx-section {
  padding: 72px 0;
}
.dx-section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 72px;
}
.dx-section-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand-cyan);
  margin-bottom: 16px;
}
.dx-section-title {
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  text-wrap: balance;
}
.dx-section-sub {
  font-size: 18px;
  color: var(--fg-2);
  margin-top: 20px;
  text-wrap: pretty;
}

/* ========== PILLARS (4-up feature grid) ========== */
.dx-pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.dx-pillar {
  padding: 32px 28px 36px;
  background: var(--surface-1);
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 260px;
  transition: background var(--dur-state) var(--ease-out);
}
.dx-pillar:hover { background: var(--surface-2); }
.dx-pillar-icon {
  width: 36px; height: 36px;
  color: var(--brand-cyan);
}
.dx-pillar-icon svg { width: 100%; height: 100%; }
.dx-pillar-title {
  font-size: var(--fs-h4);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-top: 16px;
}
.dx-pillar-text {
  font-size: 15px;
  color: var(--fg-2);
  line-height: 1.55;
  text-wrap: pretty;
}

/* ========== CURRICULUM ========== */
.dx-curric {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  align-items: start;
}
.dx-curric-side { position: sticky; top: 88px; }
.dx-curric-stat {
  font-family: var(--font-mono);
  font-size: 64px;
  font-weight: 500;
  color: var(--brand-cyan);
  letter-spacing: -0.04em;
  line-height: 1;
}
.dx-curric-stat-label {
  font-size: var(--fs-body-sm);
  color: var(--fg-3);
  margin-top: 12px;
  text-transform: uppercase;
  letter-spacing: 0.10em;
  font-family: var(--font-mono);
}
.dx-curric-side p {
  margin-top: 24px;
  color: var(--fg-2);
  font-size: 16px;
  line-height: 1.6;
  text-wrap: pretty;
}
.dx-curric-list {
  display: flex; flex-direction: column;
  gap: 12px;
}
.dx-curric-item {
  display: grid;
  grid-template-columns: 72px 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 22px 24px;
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--dur-state) var(--ease-out);
  cursor: pointer;
}
.dx-curric-item:hover,
.dx-curric-item--active {
  background: var(--surface-2);
  border-color: var(--border-cyan);
  transform: translateX(2px);
}
.dx-curric-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-cyan);
  letter-spacing: 0.06em;
  padding: 6px 10px;
  background: rgba(61,216,232,0.08);
  border: 1px solid rgba(61,216,232,0.20);
  border-radius: var(--radius-sm);
  text-align: center;
}
.dx-curric-desc {
  font-size: 14px;
  color: var(--fg-2);
  margin-top: 6px;
  line-height: 1.5;
  text-wrap: pretty;
}
.dx-curric-title {
  font-size: var(--fs-h4);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.dx-curric-meta {
  font-size: var(--fs-body-sm);
  color: var(--fg-3);
  margin-top: 4px;
  font-family: var(--font-mono);
}
.dx-curric-arrow {
  width: 18px; height: 18px;
  color: var(--fg-3);
  transition: color var(--dur-state) var(--ease-out), transform var(--dur-state) var(--ease-out);
}
.dx-curric-item:hover .dx-curric-arrow {
  color: var(--brand-cyan);
  transform: translateX(2px);
}

/* ========== AI TUTOR DEMO ========== */
.dx-tutor-section {
  padding: 72px 0;
  background: var(--surface-1);
}
.dx-tutor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.dx-tutor-copy h2 {
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin-top: 16px;
  text-wrap: balance;
}
.dx-tutor-copy p {
  margin-top: 20px;
  font-size: 17px;
  color: var(--fg-2);
  line-height: 1.6;
  max-width: 480px;
  text-wrap: pretty;
}
.dx-tutor-cta { margin-top: 32px; }
.dx-tutor-window {
  background: var(--surface-1);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--e3);
  overflow: hidden;
}
.dx-tutor-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--surface-2);
}
.dx-tutor-bar-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--surface-3); }
.dx-tutor-bar-title {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-left: auto;
}
.dx-tutor-body { padding: 24px; display: flex; flex-direction: column; gap: 16px; }
.dx-msg { display: flex; gap: 12px; align-items: flex-start; }
.dx-msg-av {
  width: 28px; height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 600;
  letter-spacing: 0.04em;
}
.dx-msg--user .dx-msg-av { background: var(--surface-3); color: var(--fg-2); }
.dx-msg--ai .dx-msg-av {
  background: var(--brand-cyan);
  color: var(--fg-on-cyan);
}
.dx-msg-bubble {
  font-size: 15px;
  line-height: 1.55;
  color: var(--fg-1);
}
.dx-msg--user .dx-msg-bubble { color: var(--fg-2); }
.dx-msg-cite {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  padding: 6px 10px;
  background: rgba(61,216,232,0.08);
  border: 1px solid rgba(61,216,232,0.25);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--brand-cyan);
  letter-spacing: 0.02em;
}
.dx-tutor-input {
  margin-top: 4px;
  padding: 14px 16px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--surface-inset);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--fg-3);
}
.dx-tutor-input::after {
  content: '';
  width: 1px; height: 16px;
  background: var(--brand-cyan);
  animation: dx-blink 1.1s steps(2) infinite;
  margin-left: -8px;
}
@keyframes dx-blink { 50% { opacity: 0; } }

/* ========== TESTIMONIAL ========== */
.dx-testimonials {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.dx-test {
  padding: 32px 28px;
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  display: flex; flex-direction: column;
  gap: 24px;
}
.dx-test-quote {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--fg-1);
  text-wrap: pretty;
}
.dx-test-foot { display: flex; align-items: center; gap: 14px; }
.dx-test-av {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1a3358, #0a1628);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 14px;
  color: var(--brand-cyan);
  border: 1px solid var(--border-default);
}
.dx-test-name { font-size: var(--fs-body-sm); font-weight: 600; }
.dx-test-meta { font-size: 12px; color: var(--fg-3); font-family: var(--font-mono); margin-top: 2px; }

/* ========== PRICING ========== */
.dx-pricing {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: stretch;
}
.dx-price {
  display: flex; flex-direction: column;
  padding: 36px 32px;
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--dur-state) var(--ease-out);
}
.dx-price--featured {
  background: var(--surface-2);
  border-color: var(--border-cyan);
  box-shadow: var(--glow-cyan);
  transform: translateY(-8px);
  position: relative;
}
.dx-price-tag {
  position: absolute;
  top: -12px;
  left: 32px;
  background: var(--brand-cyan);
  color: var(--fg-on-cyan);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
}
.dx-price-name {
  font-size: var(--fs-body-sm);
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.dx-price-amt {
  font-size: 56px;
  font-weight: 700;
  letter-spacing: -0.035em;
  margin-top: 16px;
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.dx-price-amt-currency { font-size: 24px; color: var(--fg-3); font-weight: 500; }
.dx-price-amt-period {
  font-size: 14px;
  color: var(--fg-3);
  font-weight: 400;
  font-family: var(--font-mono);
}
.dx-price-desc {
  margin-top: 14px;
  font-size: 15px;
  color: var(--fg-2);
  line-height: 1.5;
  text-wrap: pretty;
}
.dx-price-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 24px 0;
}
.dx-price-list {
  display: flex; flex-direction: column;
  gap: 12px;
  flex: 1;
}
.dx-price-feat {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px;
  color: var(--fg-2);
  line-height: 1.5;
}
.dx-price-check {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: rgba(61,216,232,0.12);
  color: var(--brand-cyan);
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  margin-top: 2px;
}
.dx-price-check svg { width: 10px; height: 10px; }
.dx-price-cta { margin-top: 28px; }
.dx-price-cta .dx-btn { width: 100%; justify-content: center; }

/* ========== FAQ ========== */
.dx-faq {
  max-width: 820px;
  margin: 0 auto;
  display: flex; flex-direction: column;
}
.dx-faq-item {
  border-bottom: 1px solid var(--border-subtle);
}
.dx-faq-q {
  display: flex; justify-content: space-between; align-items: center;
  width: 100%;
  padding: 24px 0;
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
  text-align: left;
  color: var(--fg-1);
  transition: color var(--dur-state) var(--ease-out);
}
.dx-faq-q:hover { color: var(--brand-cyan); }
.dx-faq-q-icon {
  width: 14px; height: 14px;
  color: var(--fg-3);
  transition: transform var(--dur-state) var(--ease-out);
}
.dx-faq-item--open .dx-faq-q-icon { transform: rotate(45deg); color: var(--brand-cyan); }
.dx-faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--dur-page) var(--ease-out), padding var(--dur-page) var(--ease-out);
  font-size: 16px;
  line-height: 1.6;
  color: var(--fg-2);
}
.dx-faq-item--open .dx-faq-a {
  max-height: 240px;
  padding-bottom: 24px;
}

/* ========== CTA BAND ========== */
.dx-band {
  margin: 48px 32px 0;
  padding: 64px 56px;
  border-radius: var(--radius-xl);
  background: var(--surface-1);
  border: 1px solid var(--border-default);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.dx-band::before { content: none; }
.dx-band > * { position: relative; }
.dx-band-title {
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  text-wrap: balance;
}
.dx-band-sub {
  font-size: 18px;
  color: var(--fg-2);
  margin-top: 18px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  text-wrap: pretty;
}
.dx-band-ctas { margin-top: 36px; display: flex; justify-content: center; gap: 14px; }

/* ========== FOOTER ========== */
.dx-footer {
  margin-top: 120px;
  padding: 80px 0 48px;
  border-top: 1px solid var(--border-subtle);
}
.dx-foot-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 64px;
}
.dx-foot-brand p {
  margin-top: 20px;
  font-size: var(--fs-body-sm);
  color: var(--fg-3);
  line-height: 1.55;
  max-width: 280px;
}
.dx-foot-col h4 {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 18px;
  font-weight: 500;
}
.dx-foot-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.dx-foot-col a {
  font-size: var(--fs-body-sm);
  color: var(--fg-2);
  transition: color var(--dur-state) var(--ease-out);
}
.dx-foot-col a:hover { color: var(--fg-1); }

.dx-foot-meta {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
  font-size: 13px;
  color: var(--fg-3);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* ---------- Responsive ---------- */
@media (max-width: 1180px) {
  .dx-nav-links { gap: 18px; font-size: 13px; }
  .dx-nav-cta .dx-btn { padding: 10px 14px; font-size: 13px; }
}
@media (max-width: 1020px) {
  .dx-nav-links { display: none; }
  .dx-nav-inner { height: 64px; }
  .dx-nav-cta { display: none; }
  .dx-nav-burger { display: flex; }
}

/* ===== Mobile nav menu ===== */
.dx-nav-burger {
  display: none; flex-direction: column; gap: 5px; align-items: center; justify-content: center;
  width: 42px; height: 42px; margin-left: auto; padding: 0;
  background: transparent; border: 1px solid var(--border-default); border-radius: 10px; cursor: pointer;
}
.dx-nav-burger span { display: block; width: 20px; height: 2px; background: var(--fg-1); border-radius: 2px; }
.dx-nav.is-scrolled .dx-nav-burger { border-color: rgba(255,255,255,0.28); }
.dx-nav.is-scrolled .dx-nav-burger span { background: #fff; }

.dx-nav-mobile {
  position: fixed; inset: 0; z-index: 60; background: var(--surface-0);
  transform: translateX(100%); transition: transform 0.25s var(--ease-out);
  overflow-y: auto; padding: 22px 24px 48px;
}
.dx-nav-mobile.is-open { transform: translateX(0); }
.dx-nav-mob-close {
  position: absolute; top: 16px; right: 18px; width: 42px; height: 42px;
  display: grid; place-items: center; background: var(--surface-1);
  border: 1px solid var(--border-default); border-radius: 10px; color: var(--fg-1); cursor: pointer;
}
.dx-nav-mobile-inner { margin-top: 56px; }
.dx-nav-mob-group { padding: 14px 0; border-bottom: 1px solid var(--border-subtle); }
.dx-nav-mob-h { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg-3); margin-bottom: 6px; }
.dx-nav-mob-group a { display: block; padding: 9px 0; font-size: 17px; font-weight: 600; color: var(--fg-1); text-decoration: none; }
.dx-nav-mob-group a:hover { color: var(--brand-cyan); }
.dx-nav-mob-cta { display: flex; flex-direction: column; gap: 12px; margin-top: 24px; }
.dx-nav-mob-cta .dx-btn { justify-content: center; }
.dx-nav-mob-cta .dx-lang { align-self: flex-start; }
@media (min-width: 1021px) { .dx-nav-mobile, .dx-nav-burger { display: none !important; } }
@media (max-width: 960px) {
  .dx-hero-grid, .dx-curric, .dx-tutor-grid { grid-template-columns: 1fr; gap: 48px; }
  .dx-pillars { grid-template-columns: repeat(2, 1fr); }
  .dx-pricing { grid-template-columns: 1fr; }
  .dx-testimonials { grid-template-columns: 1fr; }
  .dx-foot-grid { grid-template-columns: 1fr 1fr; }
  .dx-curric-side { position: static; }
}


/* =========================================================================
   Site extensions — shared across all pages of daedalus.online
   ========================================================================= */

/* Sub-page hero (smaller than home) */
.dx-subhero {
  padding: 80px 0 56px;
  border-bottom: 1px solid var(--border-subtle);
}
.dx-subhero-inner { max-width: 880px; }
.dx-subhero h1 {
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 700;
  letter-spacing: -0.030em;
  line-height: 1.02;
  margin-top: 20px;
  text-wrap: balance;
}
.dx-subhero p {
  margin-top: 18px;
  font-size: 19px;
  color: var(--fg-2);
  line-height: 1.55;
  max-width: 680px;
  text-wrap: pretty;
}

/* Anchor link list (used in ToC, etc.) */
.dx-toc {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-top: 28px;
}
.dx-toc a {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
  padding: 8px 14px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  transition: all var(--dur-state) var(--ease-out);
}
.dx-toc a:hover { color: var(--brand-cyan); border-color: var(--border-cyan); }

/* ----- Forms ----- */
.dx-form {
  display: flex; flex-direction: column; gap: 18px;
}
.dx-field { display: flex; flex-direction: column; gap: 8px; }
.dx-phone { display: grid; grid-template-columns: 124px 1fr; gap: 8px; }
.dx-phone-cc { font-family: var(--font-mono); }
.dx-field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.dx-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.dx-input,
.dx-textarea,
.dx-select {
  width: 100%;
  background: var(--surface-inset);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--fg-1);
  font-family: var(--font-sans);
  font-size: 15px;
  padding: 13px 14px;
  transition: border-color var(--dur-state) var(--ease-out), background var(--dur-state) var(--ease-out);
  outline: none;
}
.dx-input:focus,
.dx-textarea:focus,
.dx-select:focus {
  border-color: var(--border-cyan);
  background: var(--surface-1);
  box-shadow: 0 0 0 3px rgba(61,216,232,0.10);
}
.dx-input::placeholder, .dx-textarea::placeholder { color: var(--fg-4); }
.dx-textarea { resize: vertical; min-height: 120px; line-height: 1.55; }
.dx-select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--fg-3) 50%),
                    linear-gradient(135deg, var(--fg-3) 50%, transparent 50%);
  background-position: calc(100% - 18px) 18px, calc(100% - 13px) 18px;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 36px;
}
.dx-check {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 14px;
  color: var(--fg-2);
  line-height: 1.5;
  cursor: pointer;
}
.dx-check input { margin-top: 3px; accent-color: var(--brand-cyan); }
.dx-form-meta {
  font-size: 13px;
  color: var(--fg-3);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* Form card */
.dx-card {
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 36px;
}
.dx-card h3 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.015em;
}
.dx-card-sub {
  margin-top: 8px; margin-bottom: 24px;
  color: var(--fg-2);
  font-size: 15px;
  line-height: 1.55;
  text-wrap: pretty;
}

/* Two-col layout */
.dx-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}
.dx-2col--side {
  grid-template-columns: 1.2fr 1fr;
}

/* Big footer (sitemap-style) */
.dx-bigfoot {
  margin-top: 64px;
  padding: 56px 0 28px;
  border-top: 1px solid var(--border-subtle);
}
.dx-bigfoot-top {
  display: grid;
  grid-template-columns: 1.5fr repeat(5, 1fr);
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--border-subtle);
}
.dx-bigfoot-brand img { height: 48px; }
.dx-lang { display: inline-flex; border: 1px solid var(--border-default); border-radius: 999px; overflow: hidden; }
.dx-lang-b { font-family: var(--font-mono); font-size: 11px; font-weight: 700; letter-spacing: 0.04em; padding: 6px 10px; border: 0; background: transparent; color: var(--fg-3); cursor: pointer; }
.dx-lang-b.is-on { background: var(--fg-1); color: #fff; }
.dx-bigfoot-brand p {
  margin-top: 18px;
  font-size: 14px;
  color: var(--fg-2);
  line-height: 1.55;
  max-width: 280px;
}
.dx-bigfoot-news {
  margin-top: 24px;
  display: flex;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-pill);
  overflow: hidden;
  background: var(--surface-inset);
}
.dx-bigfoot-news input {
  flex: 1; min-width: 0;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--fg-1);
  padding: 12px 16px;
  font-family: var(--font-sans);
  font-size: 14px;
}
.dx-bigfoot-news input::placeholder { color: var(--fg-4); }
.dx-bigfoot-news button {
  background: var(--brand-cyan);
  color: var(--fg-on-cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0 18px;
  border: 0;
  cursor: pointer;
}
.dx-bigfoot-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 16px;
  font-weight: 500;
}
.dx-bigfoot-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.dx-bigfoot-col a {
  font-size: 14px;
  color: var(--fg-2);
  transition: color var(--dur-state) var(--ease-out);
}
.dx-bigfoot-col a:hover { color: var(--fg-1); }
.dx-bigfoot-mid {
  display: flex; justify-content: space-between; align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 24px;
}
.dx-bigfoot-cert {
  display: flex; gap: 28px; flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.dx-bigfoot-cert b { color: var(--fg-2); font-weight: 500; }
.dx-bigfoot-social {
  display: flex; gap: 10px;
}
.dx-bigfoot-social a {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
  color: var(--fg-2);
  transition: all var(--dur-state) var(--ease-out);
}
.dx-bigfoot-social a:hover { color: var(--brand-cyan); border-color: var(--border-cyan); }
.dx-bigfoot-social svg { width: 16px; height: 16px; }
.dx-bigfoot-bot {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 28px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.06em;
  flex-wrap: wrap; gap: 12px;
}
.dx-bigfoot-bot-links { display: flex; gap: 24px; }
.dx-bigfoot-bot-links a:hover { color: var(--fg-1); }

/* Generic content blocks */
.dx-prose { max-width: 720px; }
.dx-prose h2 {
  font-size: 32px; font-weight: 700; letter-spacing: -0.02em;
  margin-top: 56px; margin-bottom: 16px; line-height: 1.1;
}
.dx-prose h3 {
  font-size: 20px; font-weight: 600; letter-spacing: -0.01em;
  margin-top: 32px; margin-bottom: 12px;
}
.dx-prose p { margin-bottom: 16px; color: var(--fg-2); line-height: 1.65; }
.dx-prose ul { padding-left: 22px; margin-bottom: 16px; }
.dx-prose li { color: var(--fg-2); line-height: 1.65; margin-bottom: 6px; }

/* Stats row */
.dx-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.dx-stat {
  background: var(--surface-1);
  padding: 28px 24px;
  display: flex; flex-direction: column; gap: 6px;
}
.dx-stat-num {
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 500;
  color: var(--brand-cyan);
  letter-spacing: -0.03em;
  line-height: 1;
}
.dx-stat-num--amber { color: var(--brand-amber); }
.dx-stat-label {
  font-size: 14px;
  color: var(--fg-2);
  margin-top: 8px;
  line-height: 1.45;
}

/* Article card (blog) */
.dx-articles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.dx-article {
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: all var(--dur-state) var(--ease-out);
}
.dx-article:hover {
  border-color: var(--border-cyan);
  transform: translateY(-2px);
  box-shadow: var(--e2);
}
.dx-article-art {
  aspect-ratio: 16 / 9;
  background: var(--surface-2);
  position: relative;
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
}
.dx-article-body { padding: 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.dx-article-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand-cyan);
}
.dx-article-title { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; line-height: 1.25; }
.dx-article-desc { font-size: 14px; color: var(--fg-2); line-height: 1.5; flex: 1; text-wrap: pretty; }
.dx-article-meta {
  margin-top: 8px; padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-mono); font-size: 11px; color: var(--fg-3); letter-spacing: 0.04em;
  display: flex; justify-content: space-between;
}

/* Article art variants — CSS-drawn placeholders */
.dx-art-vfr {
  background:
    radial-gradient(ellipse at 30% 60%, rgba(63,191,110,0.18), transparent 50%),
    linear-gradient(180deg, #0f1f3a, #050C18);
}
.dx-art-vfr::after {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(0deg, rgba(255,255,255,0.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 24px 24px;
}
.dx-art-met {
  background:
    radial-gradient(ellipse at 70% 30%, rgba(77,156,255,0.20), transparent 60%),
    linear-gradient(180deg, #0a1628, #050C18);
}
.dx-art-ifr {
  background:
    radial-gradient(ellipse at 50% 100%, rgba(255,90,90,0.15), transparent 60%),
    linear-gradient(180deg, #122036, #050C18);
}
.dx-art-cyan {
  background:
    radial-gradient(ellipse at 50% 50%, rgba(61,216,232,0.18), transparent 70%),
    linear-gradient(180deg, #0a1628, #050C18);
}
.dx-art-amber {
  background:
    radial-gradient(ellipse at 50% 50%, rgba(255,181,71,0.16), transparent 60%),
    linear-gradient(180deg, #0f1f3a, #050C18);
}
.dx-art-grid {
  background: linear-gradient(135deg, #0a1628, #122036);
}
.dx-art-grid::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(0deg, rgba(61,216,232,0.10) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(61,216,232,0.10) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse at center, #000, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000, transparent 70%);
}

/* Login forms */
.dx-auth-wrap {
  min-height: calc(100vh - 68px);
  display: flex; align-items: center; justify-content: center;
  padding: 80px 32px;
}
.dx-auth-card {
  width: 100%; max-width: 440px;
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 44px 40px;
  box-shadow: var(--e2);
}
.dx-auth-tabs { display: flex; gap: 6px; padding: 4px; background: var(--surface-inset); border-radius: var(--radius-pill); margin-bottom: 28px; }
.dx-auth-tab {
  flex: 1; text-align: center; padding: 10px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--fg-3); border-radius: var(--radius-pill); cursor: pointer;
  transition: all var(--dur-state) var(--ease-out);
  background: transparent; border: 0;
}
.dx-auth-tab.is-active { background: var(--brand-cyan); color: var(--fg-on-cyan); }
.dx-auth-or {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg-4);
  margin: 24px 0;
}
.dx-auth-or::before, .dx-auth-or::after {
  content: ''; flex: 1; height: 1px; background: var(--border-subtle);
}
.dx-auth-sso { display: flex; flex-direction: column; gap: 10px; }
.dx-auth-sso .dx-btn { justify-content: center; width: 100%; }

/* Comparison table */
.dx-cmp {
  width: 100%;
  border-collapse: collapse;
}
.dx-cmp th, .dx-cmp td {
  text-align: left;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 14px;
  vertical-align: top;
}
.dx-cmp thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
  font-weight: 500;
  background: var(--surface-1);
}
.dx-cmp tbody th { color: var(--fg-1); font-weight: 500; }
.dx-cmp td { color: var(--fg-2); }
.dx-cmp .yes { color: var(--brand-cyan); }
.dx-cmp .no { color: var(--fg-4); }

@media (max-width: 960px) {
  .dx-2col, .dx-2col--side { grid-template-columns: 1fr; gap: 36px; }
  .dx-bigfoot-top { grid-template-columns: 1fr 1fr 1fr; }
  .dx-stats { grid-template-columns: repeat(2, 1fr); }
  .dx-articles { grid-template-columns: 1fr; }
  .dx-field-row { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .dx-bigfoot-top { grid-template-columns: 1fr; }
}


/* =========================================================================
   Additions — hero photo strip, lesson cover, mobile banner, chat widget
   ========================================================================= */

/* ---------- Hero photo strip (3 cinematic frames below the hero) ---------- */
.dx-photostrip {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.dx-photo {
  position: relative;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--e1);
  background: var(--surface-1);
  isolation: isolate;
}
.dx-photo::after {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(0deg, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 24px 24px;
  mix-blend-mode: overlay;
  opacity: 0.5;
  pointer-events: none;
}
.dx-photo-cap {
  position: absolute; left: 18px; bottom: 16px; z-index: 2;
  display: flex; flex-direction: column; gap: 4px;
}
.dx-photo-cap-eyebrow {
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--brand-cyan);
}
.dx-photo-cap-title {
  font-size: 16px; font-weight: 600; color: var(--fg-1);
  letter-spacing: -0.01em;
}
.dx-photo-tag {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase;
  color: rgba(242,246,251,0.85);
  padding: 5px 10px;
  background: rgba(5,12,24,0.55);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(6px);
  white-space: nowrap;
}
/* Three painted scenes — golden-hour cockpit, runway threshold, sectional chart */
.dx-photo--dawn {
  background:
    radial-gradient(ellipse 80% 60% at 30% 75%, rgba(255,181,71,0.55), transparent 60%),
    radial-gradient(ellipse 50% 40% at 70% 30%, rgba(255,206,140,0.30), transparent 70%),
    linear-gradient(180deg, #1a2547 0%, #FF9D4D 55%, #FFD58A 70%, #2a1a08 100%);
}
.dx-photo--dawn::before {
  content: ''; position: absolute; inset: 0;
  background:
    /* horizon line */
    linear-gradient(180deg, transparent 64%, rgba(0,0,0,0.45) 64.2%, rgba(0,0,0,0.65) 100%),
    /* sun */
    radial-gradient(circle at 30% 68%, rgba(255,242,200,0.85) 0%, rgba(255,210,140,0.4) 8%, transparent 14%);
}
.dx-photo--runway {
  background:
    radial-gradient(ellipse 70% 30% at 50% 80%, rgba(61,216,232,0.18), transparent 60%),
    linear-gradient(180deg, #050C18 0%, #0a1628 60%, #122036 100%);
}
.dx-photo--runway::before {
  content: ''; position: absolute; inset: 0;
  background:
    /* runway threshold lights */
    radial-gradient(circle at 22% 78%, #FFB547 0 2px, transparent 3px),
    radial-gradient(circle at 32% 80%, #FFB547 0 2px, transparent 3px),
    radial-gradient(circle at 42% 82%, #FFB547 0 2px, transparent 3px),
    radial-gradient(circle at 52% 84%, #FFB547 0 2px, transparent 3px),
    radial-gradient(circle at 62% 82%, #FFB547 0 2px, transparent 3px),
    radial-gradient(circle at 72% 80%, #FFB547 0 2px, transparent 3px),
    /* centerline */
    repeating-linear-gradient(0deg, transparent 0 22px, rgba(255,255,255,0.40) 22px 30px),
    /* runway shape */
    linear-gradient(180deg, transparent 60%, #1a2540 60%, #0e1a30 100%);
  background-size: auto, auto, auto, auto, auto, auto, auto, 4px 100%, 100% 100%;
  background-position: 0 0, 0 0, 0 0, 0 0, 0 0, 0 0, 0 0, 50% 60%, 0 0;
  background-repeat: no-repeat, no-repeat, no-repeat, no-repeat, no-repeat, no-repeat, no-repeat, no-repeat, no-repeat;
  filter: blur(0.4px);
}
.dx-photo--chart {
  background:
    radial-gradient(circle at 30% 30%, rgba(180,210,150,0.22), transparent 50%),
    radial-gradient(circle at 70% 60%, rgba(220,180,140,0.18), transparent 50%),
    linear-gradient(135deg, #2a3140 0%, #1a2030 100%);
}
.dx-photo--chart::before {
  content: ''; position: absolute; inset: 0;
  background:
    /* compass rose */
    radial-gradient(circle at 70% 35%, rgba(255,181,71,0.45) 0 1px, transparent 2px),
    /* concentric */
    repeating-radial-gradient(circle at 70% 35%, transparent 0 18px, rgba(255,181,71,0.18) 18px 19px),
    /* mag-var lines */
    linear-gradient(120deg, rgba(255,90,90,0.22) 0 1px, transparent 1px 60px),
    /* terrain */
    radial-gradient(ellipse at 25% 70%, rgba(120,160,90,0.25), transparent 40%);
}

/* ---------- Branded video / lesson cover ---------- */
.dx-lesson-cover {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #0a1628 0%, #050C18 100%);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 22px;
}
.dx-lesson-cover::before {
  content: '';
  position: absolute; inset: 0;
  background:
    /* sectional-style terrain */
    radial-gradient(ellipse at 80% 30%, rgba(255,181,71,0.18), transparent 50%),
    radial-gradient(ellipse at 20% 80%, rgba(61,216,232,0.10), transparent 60%);
  z-index: 0;
}
.dx-lesson-cover::after {
  /* compass rose mark, top right */
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 320px; height: 320px;
  background-image:
    repeating-conic-gradient(rgba(255,181,71,0.18) 0deg 1deg, transparent 1deg 30deg),
    radial-gradient(circle, transparent 30%, rgba(255,181,71,0.08) 30% 31%, transparent 31%);
  border-radius: 50%;
  border: 1px solid rgba(255,181,71,0.22);
  z-index: 0;
  opacity: 0.7;
}
.dx-lesson-cover-top {
  display: flex; justify-content: space-between; align-items: flex-start;
  position: relative; z-index: 2;
}
.dx-lesson-rating {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--brand-cyan);
  padding: 6px 12px;
  background: rgba(61,216,232,0.10);
  border: 1px solid rgba(61,216,232,0.30);
  border-radius: var(--radius-pill);
}
.dx-lesson-num {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.10em; text-transform: uppercase;
  color: var(--fg-3);
}
.dx-lesson-mid {
  position: relative; z-index: 2;
  flex: 1;
  display: flex; align-items: center; justify-content: center;
}
.dx-lesson-play {
  width: 76px; height: 76px;
  border-radius: 50%;
  background: var(--brand-cyan);
  color: var(--fg-on-cyan);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 0 6px rgba(61,216,232,0.18), 0 12px 36px rgba(61,216,232,0.30);
  cursor: pointer;
  transition: transform var(--dur-state) var(--ease-out);
}
.dx-lesson-play:hover { transform: scale(1.06); }
.dx-lesson-play svg { width: 28px; height: 28px; margin-left: 4px; }
.dx-lesson-bot {
  position: relative; z-index: 2;
  display: flex; flex-direction: column; gap: 8px;
}
.dx-lesson-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--fg-3);
}
.dx-lesson-title {
  font-size: 22px; font-weight: 700; letter-spacing: -0.015em;
  line-height: 1.1; color: var(--fg-1);
  text-wrap: balance;
}
.dx-lesson-meta {
  display: flex; gap: 14px; align-items: center;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px; color: var(--fg-3);
  letter-spacing: 0.06em;
}
.dx-lesson-meta strong { color: var(--fg-1); font-weight: 500; }
.dx-lesson-progress {
  height: 3px;
  background: var(--surface-inset);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 4px;
}
.dx-lesson-progress-fill {
  height: 100%;
  width: 28%;
  background: linear-gradient(90deg, var(--brand-cyan-3), var(--brand-cyan));
  border-radius: 2px;
}
.dx-lesson-cover .dx-watermark {
  position: absolute;
  top: 22px;
  right: 22px;
  z-index: 2;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 13px;
  letter-spacing: -0.01em;
  color: var(--fg-1);
  opacity: 0.85;
}

/* ---------- Mobile-app banner (full section on home) ---------- */
.dx-appsection {
  margin: 48px 32px 0;
  padding: 48px 48px;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(ellipse at 90% 20%, rgba(212,101,28,0.10), transparent 55%),
    radial-gradient(ellipse at 10% 90%, rgba(212,101,28,0.08), transparent 50%),
    linear-gradient(135deg, #FAFAF7 0%, #F3F3EE 100%);
  border: 1px solid var(--border-default);
  position: relative;
  overflow: hidden;
}
.dx-appsection::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(0deg, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, #000, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000, transparent 80%);
  pointer-events: none;
}
.dx-appsection-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 56px;
  align-items: center;
}
.dx-appsection h2 {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  text-wrap: balance;
}
.dx-appsection p {
  margin-top: 18px;
  font-size: 17px;
  color: var(--fg-2);
  line-height: 1.55;
  max-width: 520px;
  text-wrap: pretty;
}
.dx-appsection-row {
  display: flex; align-items: center; gap: 20px;
  margin-top: 32px;
  flex-wrap: wrap;
}
.dx-storebadge {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 10px 18px;
  background: #050C18;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  color: var(--fg-1);
  transition: all var(--dur-state) var(--ease-out);
}
.dx-storebadge:hover { border-color: var(--brand-cyan); transform: translateY(-1px); }
.dx-storebadge-icon { width: 28px; height: 28px; color: var(--fg-1); }
.dx-storebadge-text { display: flex; flex-direction: column; line-height: 1.1; }
.dx-storebadge-up { font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg-3); font-family: var(--font-mono); }
.dx-storebadge-down { font-size: 16px; font-weight: 700; letter-spacing: -0.01em; }

.dx-qrcard {
  display: flex; align-items: center; gap: 16px;
  padding: 12px 18px 12px 12px;
  background: var(--surface-1);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
}
.dx-qr {
  width: 76px; height: 76px;
  background: #fff;
  padding: 6px;
  border-radius: 6px;
  flex-shrink: 0;
}
.dx-qr svg { width: 100%; height: 100%; display: block; }
.dx-qrcard-text { display: flex; flex-direction: column; gap: 4px; }
.dx-qrcard-eyebrow { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--fg-3); }
.dx-qrcard-title { font-size: 14px; font-weight: 600; color: var(--fg-1); letter-spacing: -0.01em; line-height: 1.3; }

/* phone visual on app section */
.dx-appsection-phone {
  position: relative;
  width: 100%;
  max-width: 280px;
  margin: 0 auto;
  aspect-ratio: 9 / 19.5;
  background: #02060e;
  border: 8px solid #0a1628;
  border-radius: 38px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.55), 0 0 0 1px rgba(255,255,255,0.05);
  padding: 18px 12px;
  display: flex; flex-direction: column; gap: 10px;
  overflow: hidden;
}
.dx-appsection-phone::before {
  content: '';
  position: absolute;
  top: 12px; left: 50%;
  transform: translateX(-50%);
  width: 60px; height: 18px;
  background: #02060e;
  border-radius: 12px;
  z-index: 5;
}
.dx-app-status { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 10px; color: var(--fg-2); padding: 0 10px 6px; opacity: 0.8; }
.dx-app-eyebrow { font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--brand-cyan); padding: 0 4px; }
.dx-app-title { font-size: 18px; font-weight: 700; letter-spacing: -0.015em; padding: 0 4px; line-height: 1.15; }
.dx-app-card {
  margin: 4px 0;
  padding: 12px;
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
}
.dx-app-card-row { display: flex; justify-content: space-between; align-items: center; }
.dx-app-card-tag { font-family: var(--font-mono); font-size: 9px; color: var(--brand-cyan); letter-spacing: 0.10em; text-transform: uppercase; }
.dx-app-card-title { font-size: 13px; font-weight: 600; margin-top: 6px; }
.dx-app-card-bar { height: 3px; margin-top: 8px; background: var(--surface-inset); border-radius: 2px; overflow: hidden; }
.dx-app-card-bar div { height: 100%; background: var(--brand-cyan); }
.dx-app-tab {
  margin-top: auto;
  display: flex; justify-content: space-around;
  padding: 8px 4px 4px;
  border-top: 1px solid var(--border-subtle);
}
.dx-app-tab span { width: 6px; height: 6px; border-radius: 50%; background: var(--surface-3); }
.dx-app-tab span.is-active { background: var(--brand-cyan); }

/* ---------- Floating mobile-app bar (site-wide, dismissible) ---------- */
.dx-fab {
  position: fixed;
  left: 16px; right: 16px; bottom: 16px;
  z-index: 60;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 16px;
  background: rgba(5, 12, 24, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-pill);
  box-shadow: var(--e3);
  max-width: 720px;
  margin: 0 auto;
  font-size: 14px;
  transform: translateY(0);
  transition: transform var(--dur-page) var(--ease-out), opacity var(--dur-page) var(--ease-out);
}
.dx-fab.is-hidden { transform: translateY(120%); opacity: 0; pointer-events: none; }
.dx-fab-icon {
  width: 32px; height: 32px;
  background: var(--brand-cyan);
  color: var(--fg-on-cyan);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.dx-fab-icon svg { width: 16px; height: 16px; }
.dx-fab-text { flex: 1; min-width: 0; color: var(--fg-1); }
.dx-fab-text b { font-weight: 600; }
.dx-fab-text span { color: var(--fg-3); margin-left: 6px; }
.dx-fab-cta {
  padding: 8px 14px;
  background: var(--brand-cyan);
  color: var(--fg-on-cyan);
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 13px;
  white-space: nowrap;
  transition: background var(--dur-state) var(--ease-out);
}
.dx-fab-cta:hover { background: var(--brand-cyan-2); }
.dx-fab-close {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--fg-3);
  border: 0;
  background: transparent;
  cursor: pointer;
  transition: color var(--dur-state) var(--ease-out), background var(--dur-state) var(--ease-out);
}
.dx-fab-close:hover { color: var(--fg-1); background: var(--surface-2); }
.dx-fab-close svg { width: 14px; height: 14px; }

/* ---------- Floating chat widget (Indigitall-inspired) ---------- */
.dx-chat-fab {
  position: fixed;
  right: 24px; bottom: 96px;
  z-index: 65;
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--brand-cyan);
  color: var(--fg-on-cyan);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  border: 0;
  box-shadow: 0 0 0 6px rgba(61,216,232,0.16), 0 16px 36px rgba(61,216,232,0.40);
  transition: transform var(--dur-state) var(--ease-out);
}
.dx-chat-fab:hover { transform: scale(1.05); }
.dx-chat-fab svg { width: 26px; height: 26px; }
.dx-chat-fab-pulse {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--brand-cyan);
  animation: dx-chat-pulse 2.2s ease-out infinite;
  pointer-events: none;
}
@keyframes dx-chat-pulse {
  0%   { transform: scale(0.95); opacity: 0.85; }
  100% { transform: scale(1.6);  opacity: 0; }
}
.dx-chat-badge {
  position: absolute;
  top: -4px; right: -4px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--brand-amber);
  color: #1a0e00;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--surface-0);
}

.dx-chat-panel {
  position: fixed;
  right: 24px; bottom: 96px;
  z-index: 65;
  width: 380px;
  max-width: calc(100vw - 32px);
  height: 560px;
  max-height: calc(100vh - 140px);
  background: var(--surface-1);
  border: 1px solid var(--border-default);
  border-radius: 18px;
  box-shadow: 0 32px 64px rgba(0,0,0,0.55), 0 0 0 1px rgba(255,255,255,0.04);
  display: flex; flex-direction: column;
  overflow: hidden;
  transform: translateY(8px) scale(0.98);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--dur-page) var(--ease-out), opacity var(--dur-page) var(--ease-out);
}
.dx-chat-panel.is-open {
  transform: translateY(0) scale(1);
  opacity: 1;
  pointer-events: auto;
}
.dx-chat-head {
  padding: 16px 18px;
  background:
    radial-gradient(ellipse at top right, rgba(61,216,232,0.20), transparent 50%),
    linear-gradient(135deg, #0a1628 0%, #122036 100%);
  border-bottom: 1px solid var(--border-subtle);
  display: flex; gap: 12px; align-items: center;
}
.dx-chat-head-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--brand-cyan);
  color: var(--fg-on-cyan);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 16px;
  letter-spacing: -0.01em;
  flex-shrink: 0;
  position: relative;
}
.dx-chat-head-avatar::after {
  content: '';
  position: absolute; right: -2px; bottom: -2px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--state-success);
  border: 2px solid #0a1628;
}
.dx-chat-head-text { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; }
.dx-chat-head-name { font-size: 15px; font-weight: 700; letter-spacing: -0.01em; color: var(--fg-1); }
.dx-chat-head-status { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--state-success); }
.dx-chat-head-close {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  border: 0;
  color: var(--fg-2);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--dur-state) var(--ease-out), color var(--dur-state) var(--ease-out);
}
.dx-chat-head-close:hover { background: rgba(255,255,255,0.12); color: var(--fg-1); }
.dx-chat-head-close svg { width: 14px; height: 14px; }

.dx-chat-body {
  flex: 1;
  overflow-y: auto;
  padding: 18px;
  display: flex; flex-direction: column; gap: 14px;
  background: var(--surface-0);
}
.dx-chat-body::-webkit-scrollbar { width: 6px; }
.dx-chat-body::-webkit-scrollbar-thumb { background: var(--surface-3); border-radius: 3px; }

.dx-chatmsg { display: flex; gap: 10px; align-items: flex-start; }
.dx-chatmsg-av {
  width: 28px; height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 12px;
  display: flex; align-items: center; justify-content: center;
  letter-spacing: -0.01em;
}
.dx-chatmsg--bot .dx-chatmsg-av { background: var(--brand-cyan); color: var(--fg-on-cyan); }
.dx-chatmsg--user { flex-direction: row-reverse; }
.dx-chatmsg--user .dx-chatmsg-av { background: var(--surface-3); color: var(--fg-2); font-family: var(--font-mono); font-weight: 600; font-size: 10px; letter-spacing: 0.04em; }
.dx-chatmsg-bubble {
  padding: 10px 14px;
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--fg-1);
  max-width: 80%;
  text-wrap: pretty;
}
.dx-chatmsg--user .dx-chatmsg-bubble {
  background: var(--brand-cyan);
  color: var(--fg-on-cyan);
  border-color: transparent;
}
.dx-chatmsg-cite {
  display: inline-flex; align-items: center;
  margin-top: 8px;
  padding: 4px 8px;
  background: rgba(61,216,232,0.10);
  border: 1px solid rgba(61,216,232,0.25);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--brand-cyan);
  letter-spacing: 0.04em;
}
.dx-chat-typing {
  display: inline-flex; gap: 4px;
  padding: 12px 14px;
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
}
.dx-chat-typing span {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--fg-3);
  animation: dx-typing 1.4s ease-in-out infinite;
}
.dx-chat-typing span:nth-child(2) { animation-delay: 0.18s; }
.dx-chat-typing span:nth-child(3) { animation-delay: 0.36s; }
@keyframes dx-typing {
  0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-3px); }
}

.dx-chat-suggest {
  display: flex; flex-wrap: wrap; gap: 6px;
  padding: 0 18px 12px;
}
.dx-chat-suggest button {
  padding: 8px 12px;
  font-size: 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
  background: var(--surface-1);
  color: var(--fg-2);
  cursor: pointer;
  transition: all var(--dur-state) var(--ease-out);
}
.dx-chat-suggest button:hover { border-color: var(--border-cyan); color: var(--brand-cyan); }

.dx-chat-foot {
  padding: 14px 14px 12px;
  border-top: 1px solid var(--border-subtle);
  background: var(--surface-1);
}
.dx-chat-input {
  display: flex; gap: 8px; align-items: center;
  padding: 8px 8px 8px 14px;
  background: var(--surface-inset);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-pill);
}
.dx-chat-input:focus-within { border-color: var(--border-cyan); }
.dx-chat-input input {
  flex: 1; min-width: 0;
  background: transparent; border: 0; outline: 0;
  color: var(--fg-1);
  font-family: var(--font-sans);
  font-size: 14px;
  padding: 6px 0;
}
.dx-chat-input input::placeholder { color: var(--fg-4); }
.dx-chat-send {
  width: 32px; height: 32px;
  border-radius: 50%;
  border: 0;
  background: var(--brand-cyan);
  color: var(--fg-on-cyan);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--dur-state) var(--ease-out);
  flex-shrink: 0;
}
.dx-chat-send:hover { background: var(--brand-cyan-2); }
.dx-chat-send svg { width: 14px; height: 14px; }
.dx-chat-foot-meta {
  margin-top: 8px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.10em;
  color: var(--fg-4);
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .dx-photostrip { grid-template-columns: 1fr 1fr; }
  .dx-photostrip > :nth-child(3) { display: none; }
  .dx-appsection-grid { grid-template-columns: 1fr; }
  .dx-appsection { padding: 40px 28px; margin: 56px 16px 0; }
  .dx-fab-text span { display: none; }
}
@media (max-width: 600px) {
  .dx-photostrip { grid-template-columns: 1fr; }
  .dx-chat-panel { right: 12px; bottom: 92px; width: calc(100vw - 24px); }
  .dx-chat-fab { right: 12px; bottom: 88px; }
}