/* ==========================================================================
   Signal Verse AR — Page compositions
   Hero · Mesh field · Feature grid · Timeline · AR diagrams · Design system ·
   Developer · Roadmap · Education · FAQ · Contact
   ========================================================================== */

/* ==========================================================================
   HERO
   ========================================================================== */

.hero {
  position: relative;
  padding-top: clamp(7rem, 5rem + 8vw, 11rem);
  padding-bottom: var(--section-y);
  overflow: hidden;
  isolation: isolate;
}

.hero__bg {
  position: absolute;
  inset: -10% -10% 0 -10%;
  z-index: -2;
  pointer-events: none;
}
.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.9;
}

/* CSS fallback mesh — always visible, canvas layers on top */
.mesh-field {
  position: absolute;
  inset: 0;
  filter: blur(70px) saturate(150%);
  opacity: 0.85;
}
.mesh-blob {
  position: absolute;
  border-radius: 50%;
  mix-blend-mode: normal;
}
.mesh-blob--1 { width: 46vw; height: 46vw; left: -6%;  top: -12%; background: var(--mesh-1); animation: float-soft 18s var(--ease-in-out) infinite; }
.mesh-blob--2 { width: 38vw; height: 38vw; right: -4%; top: 4%;   background: var(--mesh-2); animation: float-soft 22s var(--ease-in-out) -6s infinite; }
.mesh-blob--3 { width: 32vw; height: 32vw; left: 26%;  bottom: -18%; background: var(--mesh-3); animation: float-soft 26s var(--ease-in-out) -12s infinite; }
.mesh-blob--4 { width: 26vw; height: 26vw; right: 18%; bottom: -10%; background: var(--mesh-4); animation: float-soft 20s var(--ease-in-out) -3s infinite; }

.grid-overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 20%, transparent 78%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 20%, transparent 78%);
  pointer-events: none;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  gap: clamp(2rem, 1rem + 4vw, 5rem);
  align-items: center;
}
@media (max-width: 1024px) {
  .hero__grid { grid-template-columns: minmax(0, 1fr); text-align: center; }
  .hero__copy { margin-inline: auto; }
  .hero__cta, .hero__proof { justify-content: center; }
  .hero__eyebrow { margin-inline: auto; }
}

.hero__copy { max-width: 620px; }

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px var(--space-3) 6px 6px;
  border-radius: var(--r-pill);
  background: var(--surface-glass);
  -webkit-backdrop-filter: blur(var(--blur-md));
  backdrop-filter: blur(var(--blur-md));
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-1);
  font-size: var(--fs-caption);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
}
.hero__eyebrow b {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px var(--space-3);
  border-radius: var(--r-pill);
  background: var(--accent);
  color: #fff;
  font-size: var(--fs-micro);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-display-1);
  font-weight: var(--fw-semibold);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin-top: var(--space-5);
}
.hero__title em {
  font-style: normal;
  background: linear-gradient(100deg, var(--accent) 0%, var(--cyan) 52%, var(--success) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero__lede {
  font-size: var(--fs-lead);
  line-height: var(--lh-loose);
  color: var(--text-secondary);
  margin-top: var(--space-5);
  max-width: 54ch;
}
@media (max-width: 1024px) { .hero__lede { margin-inline: auto; } }

.hero__cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-top: var(--space-7);
}

.hero__proof {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
}
.hero__proof .stat__value { font-size: clamp(1.5rem, 1.2rem + 1vw, 2rem); }
.hero__proof .stat__label { font-size: var(--fs-caption); }

/* Hero device column */
.hero__device {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 620px;
}
.hero__device-glow {
  position: absolute;
  width: 78%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-soft), transparent 68%);
  filter: blur(46px);
  animation: breathe 7s var(--ease-in-out) infinite;
}

/* Floating chips around the phone */
.float-chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--r-md);
  background: var(--surface-glass);
  -webkit-backdrop-filter: blur(var(--blur-lg)) saturate(180%);
  backdrop-filter: blur(var(--blur-lg)) saturate(180%);
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-4);
  font-size: var(--fs-caption);
  font-weight: var(--fw-semibold);
  white-space: nowrap;
  z-index: 3;
}
.float-chip svg { width: 16px; height: 16px; }
.float-chip small { display: block; font-weight: var(--fw-regular); color: var(--text-tertiary); font-size: var(--fs-micro); }
.float-chip--1 { top: 12%;  left: -4%;  animation: float-soft 11s var(--ease-in-out) infinite; }
.float-chip--2 { top: 38%;  right: -6%; animation: float-soft 13s var(--ease-in-out) -4s infinite; }
.float-chip--3 { bottom: 16%; left: -2%; animation: float-soft 15s var(--ease-in-out) -8s infinite; }
@media (max-width: 640px) {
  .float-chip--1 { left: -2%; }
  .float-chip--2 { right: -2%; }
  .float-chip--3 { display: none; }
}

.scroll-hint {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-9);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--text-tertiary);
}
.scroll-hint__rail {
  width: 22px; height: 34px;
  border-radius: var(--r-pill);
  border: 1.4px solid var(--border-strong);
  position: relative;
}
.scroll-hint__rail::after {
  content: "";
  position: absolute;
  left: 50%; top: 7px;
  width: 3px; height: 7px;
  border-radius: 2px;
  background: var(--accent);
  transform: translateX(-50%);
  animation: scroll-dot 1.9s var(--ease-in-out) infinite;
}
@keyframes scroll-dot {
  0%, 100% { transform: translate(-50%, 0); opacity: 1; }
  55%      { transform: translate(-50%, 11px); opacity: 0.2; }
}

/* ==========================================================================
   PAGE HEADER (interior pages)
   ========================================================================== */

.page-header {
  position: relative;
  padding-top: clamp(7rem, 5rem + 6vw, 10rem);
  padding-bottom: clamp(3rem, 2rem + 4vw, 5.5rem);
  overflow: hidden;
  isolation: isolate;
}
.page-header__bg {
  position: absolute;
  inset: -30% -10% auto -10%;
  height: 120%;
  z-index: -1;
  filter: blur(80px);
  opacity: 0.55;
  pointer-events: none;
}
.page-header__title {
  font-size: var(--fs-display-2);
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  line-height: 1.02;
  letter-spacing: -0.028em;
  margin-top: var(--space-4);
  max-width: 18ch;
}
.page-header__lede {
  font-size: var(--fs-lead);
  color: var(--text-secondary);
  line-height: var(--lh-loose);
  margin-top: var(--space-5);
  max-width: 62ch;
}
.page-header--center { text-align: center; }
.page-header--center .page-header__title,
.page-header--center .page-header__lede { margin-inline: auto; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-caption);
  color: var(--text-tertiary);
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { opacity: 0.5; }

/* ==========================================================================
   BENTO / FEATURE GRID
   ========================================================================== */

.bento {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: var(--space-4);
}
.bento > * { grid-column: span 2; }
.bento__wide { grid-column: span 3; }
.bento__full { grid-column: span 6; }
@media (max-width: 900px) {
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bento > * { grid-column: span 1; }
  .bento__wide, .bento__full { grid-column: span 2; }
}
@media (max-width: 560px) {
  .bento { grid-template-columns: minmax(0, 1fr); }
  .bento > *, .bento__wide, .bento__full { grid-column: span 1; }
}

.feature-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 260px;
  padding: var(--space-6);
  border-radius: var(--r-xl);
  background: var(--surface-solid);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-1);
  overflow: hidden;
  transition:
    transform var(--dur-slow) var(--ease-out),
    box-shadow var(--dur-slow) var(--ease-out),
    border-color var(--dur-slow) var(--ease-out);
}
.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-4);
  border-color: var(--border-strong);
}
.feature-card__body { color: var(--text-secondary); font-size: var(--fs-subhead); line-height: var(--lh-loose); }
.feature-card__foot { margin-top: auto; padding-top: var(--space-5); }

.feature-card__viz {
  height: 96px;
  margin: var(--space-5) calc(var(--space-6) * -1) 0;
  padding-inline: var(--space-6);
  display: flex;
  align-items: flex-end;
}

/* Mini bar visual */
.bars { display: flex; align-items: flex-end; gap: 5px; height: 100%; width: 100%; }
.bars span {
  flex: 1;
  border-radius: 3px 3px 0 0;
  background: linear-gradient(180deg, var(--accent), var(--cyan));
  height: var(--h, 40%);
  opacity: 0.7;
  transform-origin: bottom;
  animation: bar-pulse 2.6s var(--ease-in-out) infinite;
  animation-delay: calc(var(--i, 0) * 110ms);
}
@keyframes bar-pulse {
  0%, 100% { transform: scaleY(1); opacity: 0.55; }
  50%      { transform: scaleY(1.28); opacity: 1; }
}

/* ==========================================================================
   TIMELINE (How it works)
   ========================================================================== */

.timeline { position: relative; padding-left: 0; }

.timeline__rail {
  position: absolute;
  left: 27px; top: 12px; bottom: 12px;
  width: 2px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}
.timeline__rail::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: var(--progress, 0%);
  background: linear-gradient(180deg, var(--accent), var(--cyan), var(--success));
  transition: height 120ms linear;
}

.timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: var(--space-5);
  padding-bottom: var(--space-8);
}
.timeline__item:last-child { padding-bottom: 0; }

.timeline__node {
  position: relative;
  z-index: 1;
  width: 56px; height: 56px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  color: var(--text-tertiary);
  box-shadow: var(--shadow-1);
  transition:
    background-color var(--dur-slow) var(--ease-out),
    color var(--dur-slow) var(--ease-out),
    border-color var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-spring),
    box-shadow var(--dur-slow) var(--ease-out);
}
.timeline__node svg { width: 22px; height: 22px; }
.timeline__item.is-active .timeline__node {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: scale(1.08);
  box-shadow: var(--shadow-glow);
}

.timeline__card {
  padding: var(--space-5) var(--space-6);
  border-radius: var(--r-lg);
  background: var(--surface-solid);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-1);
  transition: transform var(--dur-slow) var(--ease-out), box-shadow var(--dur-slow) var(--ease-out);
}
.timeline__item.is-active .timeline__card { transform: translateX(6px); box-shadow: var(--shadow-3); }
.timeline__step {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--accent);
}
.timeline__title { font-size: var(--fs-h4); margin-top: var(--space-2); }
.timeline__body { color: var(--text-secondary); font-size: var(--fs-subhead); line-height: var(--lh-loose); margin-top: var(--space-2); }

/* ==========================================================================
   AR EXPERIENCE — diagrams
   ========================================================================== */

.ar-stage {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--r-2xl);
  overflow: hidden;
  border: 1px solid var(--border);
  background:
    radial-gradient(120% 90% at 50% 0%, var(--accent-soft), transparent 60%),
    var(--bg-sunken);
  box-shadow: var(--shadow-3);
}
.ar-stage__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 40px 40px;
  transform: perspective(600px) rotateX(58deg) scale(1.9) translateY(22%);
  transform-origin: 50% 100%;
  -webkit-mask-image: linear-gradient(180deg, transparent 22%, #000 70%);
  mask-image: linear-gradient(180deg, transparent 22%, #000 70%);
  animation: grid-drift 18s linear infinite;
}
@keyframes grid-drift {
  to { background-position: 0 40px; }
}

.ar-marker {
  position: absolute;
  left: 50%; top: 46%;
  transform: translate(-50%, -50%);
  width: 148px; height: 148px;
}
.ar-marker__frame {
  position: absolute;
  inset: 0;
  border-radius: var(--r-lg);
}
.ar-marker__corner {
  position: absolute;
  width: 28px; height: 28px;
  border: 2.5px solid var(--accent);
}
.ar-marker__corner:nth-child(1) { top: 0; left: 0; border-right: none; border-bottom: none; border-radius: 10px 0 0 0; }
.ar-marker__corner:nth-child(2) { top: 0; right: 0; border-left: none; border-bottom: none; border-radius: 0 10px 0 0; }
.ar-marker__corner:nth-child(3) { bottom: 0; left: 0; border-right: none; border-top: none; border-radius: 0 0 0 10px; }
.ar-marker__corner:nth-child(4) { bottom: 0; right: 0; border-left: none; border-top: none; border-radius: 0 0 10px 0; }
.ar-marker__scan {
  position: absolute;
  left: 4px; right: 4px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  box-shadow: 0 0 14px var(--accent);
  animation: scan-sweep 2.6s var(--ease-in-out) infinite;
}
@keyframes scan-sweep {
  0%, 100% { top: 8px; opacity: 0; }
  10%, 90% { opacity: 1; }
  50%      { top: calc(100% - 10px); }
}

.ar-panel {
  position: absolute;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--r-md);
  background: var(--surface-glass);
  -webkit-backdrop-filter: blur(var(--blur-lg)) saturate(180%);
  backdrop-filter: blur(var(--blur-lg)) saturate(180%);
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-3);
  font-size: var(--fs-caption);
  min-width: 128px;
}
.ar-panel__label { font-size: var(--fs-micro); color: var(--text-tertiary); text-transform: uppercase; letter-spacing: var(--tracking-caps); }
.ar-panel__value { font-family: var(--font-display); font-size: var(--fs-h4); font-weight: var(--fw-semibold); font-variant-numeric: tabular-nums; }
.ar-panel--tl { top: 10%; left: 6%;  animation: float-soft 12s var(--ease-in-out) infinite; }
.ar-panel--tr { top: 16%; right: 6%; animation: float-soft 14s var(--ease-in-out) -5s infinite; }
.ar-panel--bl { bottom: 12%; left: 10%; animation: float-soft 16s var(--ease-in-out) -9s infinite; }
.ar-panel--br { bottom: 8%; right: 8%; animation: float-soft 13s var(--ease-in-out) -2s infinite; }

.wave-canvas { width: 100%; height: 100%; display: block; }

.spec-list { display: flex; flex-direction: column; }
.spec-list__row {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: var(--space-5);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border);
  font-size: var(--fs-subhead);
}
.spec-list__row:first-child { border-top: 1px solid var(--border); }
.spec-list__row dt { color: var(--text-tertiary); }
.spec-list__row dd { color: var(--text); }
@media (max-width: 600px) {
  .spec-list__row { grid-template-columns: 1fr; gap: var(--space-1); }
}

/* ==========================================================================
   DESIGN SYSTEM PAGE
   ========================================================================== */

.ds-layout {
  display: grid;
  grid-template-columns: 216px minmax(0, 1fr);
  gap: var(--space-9);
  align-items: start;
}
@media (max-width: 900px) { .ds-layout { grid-template-columns: minmax(0, 1fr); gap: var(--space-6); } }

.ds-nav {
  position: sticky;
  top: 104px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: calc(100svh - 140px);
  overflow-y: auto;
}
@media (max-width: 900px) {
  .ds-nav {
    position: static;
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--border);
  }
}
.ds-nav__link {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--r-sm);
  font-size: var(--fs-subhead);
  color: var(--text-secondary);
  white-space: nowrap;
  transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.ds-nav__link:hover { background: var(--surface-muted); color: var(--text); }
.ds-nav__link.is-active { background: var(--accent-soft); color: var(--accent); font-weight: var(--fw-semibold); }

.ds-section { scroll-margin-top: 104px; padding-bottom: var(--space-11); }
.ds-section__title {
  font-size: var(--fs-h3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-6);
}

.swatch-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(158px, 1fr)); gap: var(--space-4); }
.swatch {
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  overflow: hidden;
  background: var(--surface-solid);
  cursor: pointer;
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}
.swatch:hover { transform: translateY(-3px); box-shadow: var(--shadow-3); }
/* Swatch internals are spans so the whole tile can be a <button>; they need
   explicit block display to stack. */
.swatch__chip { display: block; height: 78px; }
.swatch__meta { display: block; padding: var(--space-3); text-align: left; }
.swatch__name {
  display: block;
  font-size: var(--fs-footnote);
  font-weight: var(--fw-semibold);
  color: var(--text);
}
.swatch__hex {
  display: block;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  color: var(--text-tertiary);
  text-transform: uppercase;
}

.type-row {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  gap: var(--space-5);
  align-items: baseline;
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--border);
}
@media (max-width: 720px) { .type-row { grid-template-columns: 1fr; gap: var(--space-2); } }
.type-row__meta { font-family: var(--font-mono); font-size: var(--fs-caption); color: var(--text-tertiary); line-height: 1.7; }

.spec-swatch {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border);
  font-size: var(--fs-subhead);
}
.spec-swatch__demo {
  flex-shrink: 0;
  width: 108px; height: 56px;
  border-radius: var(--r-md);
  background: var(--surface-muted);
  border: 1px solid var(--border);
}

.space-bar {
  height: 26px;
  border-radius: var(--r-xs);
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  opacity: 0.85;
}

.state-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: var(--space-4); }
.state-cell {
  padding: var(--space-5);
  border-radius: var(--r-md);
  border: 1px dashed var(--border-strong);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  background: var(--surface-muted);
}
.state-cell__label {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  text-transform: uppercase;
  letter-spacing: var(--tracking-caps);
  color: var(--text-tertiary);
}

.token-copy {
  position: relative;
  cursor: copy;
}

/* ==========================================================================
   DEVELOPER PAGE
   ========================================================================== */

.tree {
  font-family: var(--font-mono);
  font-size: var(--fs-footnote);
  line-height: 1.85;
  color: var(--text-secondary);
  white-space: pre;
  overflow-x: auto;
}
.tree b { color: var(--text); font-weight: var(--fw-semibold); }
.tree i { color: var(--accent); font-style: normal; }
.tree u { color: var(--text-tertiary); text-decoration: none; }

.checklist { display: flex; flex-direction: column; gap: var(--space-3); }
.checklist li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--fs-subhead);
  color: var(--text-secondary);
  line-height: var(--lh-loose);
}
.checklist li > svg {
  flex-shrink: 0;
  width: 20px; height: 20px;
  margin-top: 2px;
  color: var(--success);
}
.checklist strong { color: var(--text); font-weight: var(--fw-semibold); }

/* ==========================================================================
   ROADMAP
   ========================================================================== */

.roadmap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: var(--space-4);
}
.phase-card {
  position: relative;
  padding: var(--space-6);
  border-radius: var(--r-xl);
  background: var(--surface-solid);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: transform var(--dur-slow) var(--ease-out), box-shadow var(--dur-slow) var(--ease-out);
}
.phase-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-4); }
.phase-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--rail, var(--border-strong));
}
.phase-card--done    { --rail: var(--success); }
.phase-card--current { --rail: var(--accent); }
.phase-card--next    { --rail: var(--cyan); }
.phase-card--future  { --rail: var(--text-tertiary); }
.phase-card__q {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: var(--tracking-caps);
  color: var(--text-tertiary);
  text-transform: uppercase;
}
.phase-card ul { margin-top: var(--space-4); display: flex; flex-direction: column; gap: var(--space-2); }
.phase-card ul li {
  display: flex;
  gap: var(--space-3);
  font-size: var(--fs-subhead);
  color: var(--text-secondary);
  line-height: var(--lh-base);
}
.phase-card ul li::before {
  content: "";
  flex-shrink: 0;
  width: 6px; height: 6px;
  margin-top: 9px;
  border-radius: 50%;
  background: var(--rail, var(--border-strong));
}

.progress-track {
  height: 6px;
  border-radius: var(--r-pill);
  background: var(--surface-muted);
  overflow: hidden;
}
.progress-track__fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  width: 0;
  transition: width var(--dur-cinema) var(--ease-out);
}

/* ==========================================================================
   EDUCATION
   ========================================================================== */

.syllabus-item {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto;
  gap: var(--space-5);
  align-items: center;
  padding: var(--space-5);
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  background: var(--surface-solid);
  transition: border-color var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}
.syllabus-item:hover { border-color: var(--accent); transform: translateX(5px); box-shadow: var(--shadow-2); }
.syllabus-item__num {
  display: grid;
  place-items: center;
  width: 56px; height: 56px;
  border-radius: var(--r-md);
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-h4);
}
@media (max-width: 620px) {
  .syllabus-item { grid-template-columns: 56px minmax(0, 1fr); }
  .syllabus-item > .badge { grid-column: 2; justify-self: start; }
}

.quote {
  position: relative;
  padding: var(--space-8);
  border-radius: var(--r-xl);
  background: var(--surface-solid);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-1);
}
.quote__mark {
  font-family: var(--font-display);
  font-size: 4rem;
  line-height: 0.6;
  color: var(--accent);
  opacity: 0.22;
}
.quote__text { font-size: var(--fs-lead); line-height: var(--lh-loose); margin-top: var(--space-4); }
.quote__by { display: flex; align-items: center; gap: var(--space-3); margin-top: var(--space-5); }
.avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(140deg, var(--accent), var(--cyan));
  color: #fff;
  font-weight: var(--fw-semibold);
  font-size: var(--fs-subhead);
  flex-shrink: 0;
}

/* ==========================================================================
   CTA BAND
   ========================================================================== */

.cta-band {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-3xl);
  padding: clamp(2.5rem, 2rem + 4vw, 5rem);
  text-align: center;
  background: linear-gradient(140deg, #0A84FF 0%, #0068D6 46%, #64D2FF 100%);
  color: #fff;
  box-shadow: 0 30px 80px rgba(10, 132, 255, 0.32);
  isolation: isolate;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    radial-gradient(50% 60% at 20% 10%, rgba(255,255,255,0.28), transparent 60%),
    radial-gradient(40% 50% at 85% 90%, rgba(48, 209, 88, 0.32), transparent 62%);
}
.cta-band::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.14;
  background-image:
    linear-gradient(rgba(255,255,255,0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.5) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, #000, transparent 72%);
  mask-image: radial-gradient(ellipse at 50% 50%, #000, transparent 72%);
}
.cta-band__title {
  font-size: var(--fs-h1);
  letter-spacing: -0.028em;
  max-width: 20ch;
  margin-inline: auto;
}
.cta-band__lede {
  font-size: var(--fs-lead);
  opacity: 0.88;
  max-width: 56ch;
  margin: var(--space-4) auto 0;
  line-height: var(--lh-loose);
}
.cta-band .btn--secondary {
  --btn-bg: #fff;
  --btn-fg: #0A5FBF;
  --btn-border: transparent;
}
.cta-band .btn--glass {
  --btn-bg: rgba(255,255,255,0.16);
  --btn-fg: #fff;
  --btn-border: rgba(255,255,255,0.38);
}

/* ==========================================================================
   FAQ + CONTACT
   ========================================================================== */

.faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: var(--space-9);
  align-items: start;
}
@media (max-width: 940px) { .faq-layout { grid-template-columns: minmax(0, 1fr); } }

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(2rem, 1rem + 4vw, 4.5rem);
  align-items: start;
}
@media (max-width: 900px) { .contact-layout { grid-template-columns: minmax(0, 1fr); } }

.contact-method {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--border);
}
.contact-method__icon {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border-radius: var(--r-sm);
  background: var(--accent-soft);
  color: var(--accent);
}
.contact-method__icon svg { width: 20px; height: 20px; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}
.form-grid > .field--full { grid-column: 1 / -1; }
@media (max-width: 620px) { .form-grid { grid-template-columns: minmax(0, 1fr); } }

.form-success {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
  padding: var(--space-9) var(--space-6);
}
.form-success.is-visible { display: flex; }

/* ==========================================================================
   ABOUT — values / team
   ========================================================================== */

.value-row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: var(--space-5);
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--border);
}
.value-row__num {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  color: var(--accent);
  letter-spacing: var(--tracking-caps);
  padding-top: 6px;
}
@media (max-width: 560px) { .value-row { grid-template-columns: 1fr; gap: var(--space-2); } }

.logo-strip {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  flex-wrap: wrap;
  justify-content: center;
  opacity: 0.55;
}
.logo-strip span {
  font-family: var(--font-display);
  font-size: var(--fs-callout);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--tracking-tight);
  color: var(--text-tertiary);
}

/* ==========================================================================
   SPLIT SHOWCASE (image / text alternating)
   ========================================================================== */

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(2rem, 1rem + 4vw, 5rem);
  align-items: center;
}
@media (max-width: 900px) { .split { grid-template-columns: minmax(0, 1fr); } }
.split--reverse > *:first-child { order: 2; }
@media (max-width: 900px) { .split--reverse > *:first-child { order: 0; } }

.showcase-frame {
  position: relative;
  border-radius: var(--r-2xl);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-sunken);
  box-shadow: var(--shadow-3);
  aspect-ratio: 4 / 3;
}
.showcase-frame__inner { position: absolute; inset: 0; padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-4); }

/* Simulated waveform panel used in showcases */
.viz-card {
  border-radius: var(--r-lg);
  background: var(--surface-glass);
  -webkit-backdrop-filter: blur(var(--blur-md));
  backdrop-filter: blur(var(--blur-md));
  border: 1px solid var(--border-glass);
  padding: var(--space-4);
  box-shadow: var(--shadow-2);
}
.viz-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--fs-caption);
  color: var(--text-tertiary);
  margin-bottom: var(--space-3);
}
.viz-card canvas { width: 100%; height: 100px; }

/* Slider control used in demos */
.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: var(--r-pill);
  background: var(--border-strong);
  outline: none;
  cursor: pointer;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-2);
  cursor: grab;
  transition: transform var(--dur-fast) var(--ease-spring);
}
.slider::-webkit-slider-thumb:active { transform: scale(1.18); cursor: grabbing; }
.slider::-moz-range-thumb {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-2);
  cursor: grab;
}
.slider:focus-visible { outline: 3px solid var(--accent-ring); outline-offset: 4px; }

/* ==========================================================================
   COMPARISON / metric rows
   ========================================================================== */

.metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
  gap: var(--space-5);
  padding: var(--space-8);
  border-radius: var(--r-2xl);
  background: var(--surface-solid);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-1);
}
.metric-grid > * + * { position: relative; }
.metric-grid > * + *::before {
  content: "";
  position: absolute;
  left: calc(var(--space-5) * -0.5);
  top: 8%; bottom: 8%;
  width: 1px;
  background: var(--border);
}
@media (max-width: 720px) { .metric-grid > * + *::before { display: none; } }