/* ========================================
   БОТ.РФ — Custom Styles
   Light Mode / Linear-style / Glassmorphism
   ======================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  font-size: 16px;
}

body {
  overflow-x: hidden;
}

:root {
  --site-shell-max: 86rem;
  --site-shell-gutter: clamp(1rem, 1.8vw, 2rem);
}

.site-shell {
  width: 100%;
  max-width: var(--site-shell-max);
  margin-inline: auto;
  padding-inline: var(--site-shell-gutter);
}

.site-shell--narrow {
  max-width: min(var(--site-shell-max), 72rem);
}

@media (min-width: 1536px) {
  html {
    font-size: 17px;
  }

  :root {
    --site-shell-max: 98rem;
    --site-shell-gutter: clamp(1.25rem, 1.9vw, 2.5rem);
  }
}

@media (min-width: 1920px) {
  html {
    font-size: 18px;
  }

  :root {
    --site-shell-max: 112rem;
  }
}

@media (min-width: 2400px) {
  html {
    font-size: 19px;
  }

  :root {
    --site-shell-max: 120rem;
  }
}

::selection {
  background: rgba(124, 58, 237, 0.15);
  color: #1a1a2e;
}

/* === Header Glass === */
.header-glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.header-glass.scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: rgba(0, 0, 0, 0.08);
}

/* === Primary Button === */
.btn-primary {
  background: linear-gradient(135deg, #7C3AED 0%, #6D28D9 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, #7C3AED, #A855F7);
  z-index: -1;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow:
    0 4px 16px rgba(124, 58, 237, 0.25),
    0 0 40px rgba(124, 58, 237, 0.08);
}

.btn-primary:hover::before {
  opacity: 1;
}

/* === Bento Cards === */
.bento-card {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 4px 12px rgba(0, 0, 0, 0.03);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.bento-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(124, 58, 237, 0.05),
    transparent 40%
  );
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.bento-card:hover {
  border-color: rgba(124, 58, 237, 0.18);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06), 0 8px 32px rgba(0, 0, 0, 0.04);
}

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

/* === Partners === */
.partners-section {
  background:
    radial-gradient(ellipse 60% 50% at 50% 50%, rgba(124, 58, 237, 0.03) 0%, transparent 60%),
    transparent;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  column-gap: 1.8rem;
  row-gap: 2.4rem;
}

.partner-item {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 3.9rem;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.partner-item img {
  max-width: 172px;
  max-height: 52px;
  width: 100%;
  height: auto;
  object-fit: contain;
  filter: grayscale(100%) brightness(0.74) contrast(1.04);
  opacity: 0.72;
  transition: transform 0.3s ease, opacity 0.3s ease, filter 0.3s ease;
}

.partner-item:hover img {
  filter: grayscale(100%) brightness(0.58) contrast(1.08);
  opacity: 0.92;
  transform: translateY(-1px);
}

@media (max-width: 1023px) {
  .partners-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    column-gap: 1.3rem;
    row-gap: 2rem;
  }
}

@media (max-width: 640px) {
  .partners-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: 1rem;
    row-gap: 1.5rem;
  }

  .partner-item {
    min-height: 3rem;
  }

  .partner-item img {
    max-width: 126px;
    max-height: 38px;
  }
}

/* === Problems (redesign) === */
.prb {
  overflow: hidden;
}

.prb__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 40% at 12% 20%, rgba(96, 165, 250, 0.06) 0%, transparent 100%),
    radial-gradient(ellipse 40% 45% at 88% 70%, rgba(167, 139, 250, 0.05) 0%, transparent 100%);
  pointer-events: none;
}

/* -- Head -- */
.prb__head {
  text-align: center;
  max-width: 42rem;
  margin: 0 auto 3rem;
}

.prb__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(124, 58, 237, 0.15);
  background: rgba(245, 243, 255, 0.8);
  color: #6D28D9;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.prb__eyebrow::before {
  content: '';
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: #A78BFA;
  box-shadow: 0 0 0 0.3rem rgba(167, 139, 250, 0.12);
}

.prb__title {
  margin-top: 1.1rem;
  font-family: 'Manrope', 'Inter', sans-serif;
  font-size: clamp(2rem, 1.5rem + 1.5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  text-wrap: balance;
  color: #0f172a;
}

.prb__lead {
  margin-top: 1rem;
  color: #64748b;
  font-size: 1.05rem;
  line-height: 1.65;
}

/* -- Grid -- */
.prb__grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}

/* -- Card -- */
.prb-card {
  --card-accent: #7C3AED;
  --card-accent-soft: rgba(124, 58, 237, 0.10);
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 2rem 1.75rem 1.75rem;
  border-radius: 1.5rem;
  border: 1px solid rgba(0, 0, 0, 0.07);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.04),
    0 6px 24px rgba(0, 0, 0, 0.04);
  transition:
    transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
    border-color 0.35s ease,
    box-shadow 0.35s ease;
}

.prb-card:hover {
  transform: translateY(-6px);
  border-color: var(--card-accent-soft);
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.08),
    0 0 0 1px var(--card-accent-soft);
}

/* top accent bar */
.prb-card__accent {
  position: absolute;
  top: 0;
  left: 1.5rem;
  right: 1.5rem;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: linear-gradient(90deg, var(--card-accent), color-mix(in srgb, var(--card-accent), white 30%));
  opacity: 0.7;
  transition: opacity 0.35s ease;
}

.prb-card:hover .prb-card__accent {
  opacity: 1;
}

/* number */
.prb-card__num {
  font-family: 'Unbounded', 'Manrope', sans-serif;
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  background: linear-gradient(180deg, var(--card-accent) 0%, color-mix(in srgb, var(--card-accent), transparent 70%) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.25;
  margin-bottom: 0.25rem;
}

/* icon */
.prb-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 0.85rem;
  background: var(--card-accent-soft);
  color: var(--card-accent);
  margin-bottom: 1rem;
  flex-shrink: 0;
}

/* title */
.prb-card__title {
  font-family: 'Manrope', 'Inter', sans-serif;
  font-size: clamp(1.25rem, 1rem + 0.5vw, 1.55rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: #0f172a;
  text-wrap: balance;
}

/* description */
.prb-card__desc {
  margin-top: 0.75rem;
  color: #64748b;
  font-size: 0.92rem;
  line-height: 1.65;
}

/* divider */
.prb-card__divider {
  width: 100%;
  height: 1px;
  margin: 1.25rem 0;
  background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.08) 20%, rgba(0, 0, 0, 0.08) 80%, transparent);
}

/* answer block */
.prb-card__answer {
  margin-top: auto;
  padding: 1rem 1.15rem;
  border-radius: 1rem;
  background:
    linear-gradient(135deg, var(--card-accent-soft), transparent 50%),
    rgba(248, 250, 252, 0.6);
  border: 1px solid color-mix(in srgb, var(--card-accent), transparent 88%);
}

.prb-card__answer-head {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.5rem;
  color: var(--card-accent);
}

.prb-card__answer-head span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.prb-card__answer p {
  color: #334155;
  font-size: 0.88rem;
  line-height: 1.6;
}

/* -- Color modifiers -- */
.prb-card--blue {
  --card-accent: #3B82F6;
  --card-accent-soft: rgba(59, 130, 246, 0.10);
}

.prb-card--orange {
  --card-accent: #F97316;
  --card-accent-soft: rgba(249, 115, 22, 0.10);
}

.prb-card--purple {
  --card-accent: #8B5CF6;
  --card-accent-soft: rgba(139, 92, 246, 0.10);
}

/* -- Responsive -- */
@media (min-width: 768px) {
  .prb__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767px) {
  .prb__head {
    text-align: left;
    margin-bottom: 2rem;
  }

  .prb-card {
    padding: 1.5rem 1.25rem 1.25rem;
    border-radius: 1.25rem;
  }

  .prb-card__num {
    font-size: 2.4rem;
  }

  .prb-card__icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.7rem;
  }

  .prb-card__icon svg {
    width: 22px;
    height: 22px;
  }
}

/* === Approach Steps === */
.approach-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.approach-step {
  display: flex;
  gap: 1.25rem;
  padding: 2rem;
  background: rgba(255,255,255,0.8);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 1.25rem;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.approach-step:hover {
  box-shadow: 0 4px 20px rgba(124,58,237,0.08);
  border-color: rgba(124,58,237,0.15);
}

.approach-step__num {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  color: rgba(0,0,0,0.05);
  font-family: 'JetBrains Mono', monospace;
  flex-shrink: 0;
  width: 3rem;
  letter-spacing: -0.04em;
}

.approach-step__body {
  flex: 1;
}

.approach-step__icon {
  width: 2.5rem;
  height: 2.5rem;
  background: rgba(124,58,237,0.08);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #7C3AED;
  margin-bottom: 1rem;
}

.approach-step__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.approach-step__desc {
  font-size: 0.9rem;
  color: #64748B;
  line-height: 1.65;
  margin-bottom: 1rem;
}

.approach-step__tag {
  display: inline-block;
  font-size: 0.7rem;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #7C3AED;
  background: rgba(124,58,237,0.08);
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
}

@media (max-width: 640px) {
  .approach-grid {
    grid-template-columns: 1fr;
  }

  .approach-step__num {
    font-size: 2rem;
    width: 2rem;
  }
}

/* === Services — Sticky Scroll === */
.svc__layout {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

@media (min-width: 768px) {
  .svc__layout {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 3rem;
    align-items: start;
  }
}

.svc__sticky {
  position: static;
}

@media (min-width: 768px) {
  .svc__sticky {
    position: sticky;
    top: 7rem;
  }
}

.svc__nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.85rem;
  border-radius: 0.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: #64748b;
  text-decoration: none;
  transition: all 0.25s ease;
}

.svc__nav-link:hover {
  color: #1e293b;
  background: rgba(0, 0, 0, 0.03);
}

.svc__nav-link--active {
  color: #1e293b;
  background: rgba(124, 58, 237, 0.06);
}

.svc__nav-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #cbd5e1;
  flex-shrink: 0;
  transition: background 0.25s ease;
}

.svc__nav-link--active .svc__nav-dot {
  background: #7C3AED;
}

.svc__cards {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.svc-card {
  position: relative;
  border-radius: 1.5rem;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.98) 100%);
  border: 1px solid rgba(0, 0, 0, 0.07);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.8);
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.svc-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.svc-card__accent {
  height: 4px;
  width: 100%;
}

.svc-card__accent--blue { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.svc-card__accent--purple { background: linear-gradient(90deg, #7C3AED, #a78bfa); }
.svc-card__accent--violet { background: linear-gradient(90deg, #7c3aed, #c084fc); }

.svc-card__body {
  padding: 2rem;
}

.svc-card__features {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.svc-card__feature {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.9rem;
  color: #334155;
  line-height: 1.5;
}

.svc-card__metric {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.svc-card__metric-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: #0f172a;
}

.svc-card__metric-label {
  font-size: 0.85rem;
  color: #64748b;
}

/* Webinar sub-block */
.svc-card__webinar {
  margin-top: 1.5rem;
  padding: 1.25rem;
  border-radius: 1rem;
  background: rgba(124, 58, 237, 0.04);
  border: 1px solid rgba(124, 58, 237, 0.1);
}

.svc-card__webinar-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  color: #1e293b;
}

.svc-card__webinar-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.1rem;
  border-radius: 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.svc-card__webinar-btn--primary {
  background: linear-gradient(135deg, #7C3AED 0%, #6D28D9 100%);
  color: #fff;
}

.svc-card__webinar-btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}

.svc-card__webinar-btn--secondary {
  background: rgba(124, 58, 237, 0.08);
  color: #7C3AED;
  border: 1px solid rgba(124, 58, 237, 0.15);
}

.svc-card__webinar-btn--secondary:hover {
  background: rgba(124, 58, 237, 0.14);
}

/* === Cases === */
.cases-shell {
  --cases-orbit-x: 18%;
  --cases-orbit-y: 16%;
  --cases-glow-opacity: 0.72;
  --cases-line-scale: 0.18;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 1.35rem;
  border-radius: 2rem;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(248, 250, 252, 0.98) 100%);
  border: 1px solid rgba(124, 58, 237, 0.08);
  box-shadow:
    0 18px 48px rgba(15, 23, 42, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.82);
}

.cases-shell::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(70% 120% at var(--cases-orbit-x) var(--cases-orbit-y), rgba(124, 58, 237, 0.14) 0%, transparent 58%),
    radial-gradient(55% 70% at calc(var(--cases-orbit-x) + 14%) 0%, rgba(59, 130, 246, 0.08) 0%, transparent 62%);
  opacity: var(--cases-glow-opacity);
  pointer-events: none;
}

.cases-shell::after {
  content: '';
  position: absolute;
  left: 1.35rem;
  right: 1.35rem;
  top: 0;
  height: 1px;
  transform-origin: left center;
  transform: scaleX(var(--cases-line-scale));
  background: linear-gradient(90deg, rgba(124, 58, 237, 0), rgba(124, 58, 237, 0.58), rgba(59, 130, 246, 0.2), rgba(124, 58, 237, 0));
  opacity: 0.9;
  pointer-events: none;
}

.cases-toolbar {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.cases-filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.cases-filter {
  cursor: pointer;
  font: inherit;
  border: 1px solid rgba(124, 58, 237, 0.08);
  background: rgba(255, 255, 255, 0.78);
  color: #475569;
  padding: 0.85rem 1.1rem;
  border-radius: 1rem;
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.82);
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}

.cases-filter:hover {
  transform: translateY(-1px);
  border-color: rgba(124, 58, 237, 0.2);
  background: rgba(124, 58, 237, 0.05);
  color: #0f172a;
}

.cases-filter.is-active {
  background: linear-gradient(135deg, #7C3AED 0%, #6D28D9 100%);
  border-color: rgba(124, 58, 237, 0.28);
  color: #ffffff;
  box-shadow: 0 10px 24px rgba(124, 58, 237, 0.18);
}

.cases-filter--secondary {
  background: rgba(124, 58, 237, 0.04);
  border-color: rgba(124, 58, 237, 0.1);
}

.cases-filter--secondary.is-active {
  background: rgba(124, 58, 237, 0.12);
  border-color: rgba(124, 58, 237, 0.2);
  color: #5B21B6;
  box-shadow: none;
}

.cases-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 1rem;
  perspective: 1400px;
}

.cases-actions {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
}

.cases-toggle {
  cursor: pointer;
  font: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0.9rem 1.4rem;
  border-radius: 999px;
  border: 1px solid rgba(124, 58, 237, 0.14);
  background: rgba(255, 255, 255, 0.82);
  color: #5B21B6;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  box-shadow:
    0 12px 30px rgba(15, 23, 42, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.86);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.cases-toggle.hidden {
  display: none;
}

.cases-toggle:hover,
.cases-toggle:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(124, 58, 237, 0.24);
  background: rgba(124, 58, 237, 0.08);
  color: #4C1D95;
  box-shadow:
    0 16px 36px rgba(124, 58, 237, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.cases-toggle:focus-visible {
  outline: 2px solid rgba(124, 58, 237, 0.24);
  outline-offset: 3px;
}

.case-card {
  --case-accent: #7C3AED;
  --case-accent-soft: rgba(124, 58, 237, 0.1);
  --case-accent-strong: rgba(96, 165, 250, 0.34);
  --case-shimmer-x: 82%;
  --case-shimmer-y: 16%;
  --case-shimmer-angle: 140deg;
  --case-shimmer-shift-x: 0px;
  --case-shimmer-shift-y: 0px;
  --case-shimmer-scale: 1;
  --case-shimmer-opacity: 0.22;
  --case-scroll-focus: 0;
  --case-scroll-travel: 0px;
  --case-scroll-rotate: 0deg;
  --case-hover-lift: 0px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  padding: 1.6rem;
  border-radius: 1.75rem;
  min-height: 100%;
  overflow: hidden;
  background:
    radial-gradient(115% 120% at var(--case-shimmer-x) var(--case-shimmer-y), rgba(96, 165, 250, 0.16) 0%, transparent 28%),
    radial-gradient(130% 140% at 100% 0%, rgba(59, 130, 246, 0.12) 0%, transparent 44%),
    radial-gradient(130% 140% at 0% 100%, rgba(15, 23, 42, 0.05) 0%, transparent 40%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.98) 100%);
  border: 1px solid rgba(124, 58, 237, 0.09);
  box-shadow:
    0 12px 36px rgba(15, 23, 42, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.8),
    inset 0 -1px 0 rgba(15, 23, 42, 0.03);
  transform:
    translate3d(0, calc(var(--case-scroll-travel) + var(--case-hover-lift)), 0)
    scale(calc(0.972 + (var(--case-scroll-focus) * 0.028)))
    rotateX(var(--case-scroll-rotate));
  transform-origin: center center;
  transform-style: preserve-3d;
  will-change: transform, box-shadow;
  transition:
    transform 0.35s ease,
    border-color 0.35s ease,
    box-shadow 0.35s ease,
    background 0.45s ease;
}

.case-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(var(--case-shimmer-angle), rgba(255, 255, 255, 0.26) 0%, rgba(147, 197, 253, 0.24) 34%, rgba(59, 130, 246, 0.08) 70%, transparent 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: calc(0.5 + var(--case-shimmer-opacity));
  pointer-events: none;
}

.case-card::after {
  content: '';
  position: absolute;
  inset: -18% -12% auto auto;
  width: 15rem;
  height: 15rem;
  border-radius: 999px;
  background:
    radial-gradient(circle, rgba(59, 130, 246, 0.18) 0%, rgba(147, 197, 253, 0.12) 22%, transparent 70%);
  opacity: calc(0.12 + var(--case-shimmer-opacity));
  filter: blur(28px);
  pointer-events: none;
  transform: translate3d(var(--case-shimmer-shift-x), var(--case-shimmer-shift-y), 0) scale(var(--case-shimmer-scale));
  transition: transform 0.45s ease, opacity 0.45s ease;
}

.case-card:hover {
  --case-hover-lift: -10px;
  border-color: rgba(124, 58, 237, 0.18);
  box-shadow:
    0 28px 72px rgba(15, 23, 42, 0.12),
    0 0 0 1px rgba(124, 58, 237, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.case-card__tags {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.case-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.7rem;
  border-radius: 0.7rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid rgba(124, 58, 237, 0.06);
  background: rgba(255, 255, 255, 0.72);
  color: #334155;
}

.case-chip--industry {
  background: rgba(124, 58, 237, 0.1);
  color: #6D28D9;
  border-color: transparent;
}

.case-chip--process {
  background: rgba(15, 23, 42, 0.04);
  color: #475569;
}

.case-card__title {
  position: relative;
  z-index: 1;
  font-size: clamp(1.55rem, 1.1rem + 0.9vw, 2.2rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: #0f172a;
}

.case-card__subtitle {
  position: relative;
  z-index: 1;
  color: #475569;
  font-size: 1rem;
  line-height: 1.55;
}

.case-card__facts {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.case-card__fact {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.95rem 1rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(124, 58, 237, 0.06);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.case-card__label {
  align-self: flex-start;
  padding: 0.4rem 0.7rem;
  border-radius: 0.65rem;
  background: rgba(124, 58, 237, 0.06);
  color: #334155;
  font-size: 0.78rem;
  line-height: 1;
  border: 1px solid rgba(124, 58, 237, 0.08);
}

.case-card__fact p {
  color: #475569;
  line-height: 1.65;
}

.case-card__metrics {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.case-metric {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 0.75rem;
  border-radius: 999px;
  background: rgba(124, 58, 237, 0.05);
  border: 1px solid rgba(124, 58, 237, 0.08);
  color: #334155;
  font-size: 0.78rem;
  font-weight: 500;
}

.case-card__insight {
  position: relative;
  z-index: 1;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid rgba(124, 58, 237, 0.08);
  color: #475569;
  line-height: 1.6;
}

.case-card__insight strong {
  color: #0f172a;
}

.case-card__footer {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: flex-end;
  align-items: flex-end;
  margin-top: auto;
  padding-top: 0.95rem;
  border-top: 1px solid rgba(124, 58, 237, 0.08);
}

.case-card__demo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0;
  border: 0;
  background: transparent;
  color: #475569;
  font-size: 0.92rem;
  font-weight: 500;
  line-height: 1.4;
  text-decoration-line: underline;
  text-decoration-style: dotted;
  text-underline-offset: 0.24em;
  cursor: pointer;
  transition: color 0.25s ease, transform 0.25s ease;
}

.case-card__demo-link:hover,
.case-card__demo-link:focus-visible {
  color: var(--case-accent, #7C3AED);
  transform: translateY(-1px);
}

.case-card__demo-link:focus-visible {
  outline: none;
}

@media (prefers-reduced-motion: reduce) {
  .case-card,
  .case-card::after {
    transition: none;
  }
}

.cases-empty {
  position: relative;
  z-index: 1;
  padding: 1.4rem 1.6rem;
  border-radius: 1.25rem;
  border: 1px dashed rgba(124, 58, 237, 0.14);
  background: rgba(124, 58, 237, 0.03);
  color: #64748B;
  text-align: center;
  line-height: 1.6;
}

@media (min-width: 1024px) {
  .cases-shell {
    gap: 1.2rem;
    padding: 1.1rem;
  }

  .cases-grid {
    gap: 0.85rem;
  }

  .case-card {
    gap: 0.95rem;
    padding: 1.3rem;
    border-radius: 1.45rem;
  }

  .case-card__tags {
    gap: 0.45rem;
  }

  .case-chip {
    padding: 0.38rem 0.62rem;
    border-radius: 0.62rem;
    font-size: 0.67rem;
  }

  .case-card__title {
    font-size: clamp(1.3rem, 0.98rem + 0.46vw, 1.7rem);
    line-height: 1.08;
  }

  .case-card__subtitle {
    font-size: 0.92rem;
    line-height: 1.48;
  }

  .case-card__facts {
    gap: 0.75rem;
  }

  .case-card__fact {
    gap: 0.4rem;
    padding: 0.78rem 0.85rem;
    border-radius: 0.9rem;
  }

  .case-card__label {
    padding: 0.34rem 0.58rem;
    border-radius: 0.58rem;
    font-size: 0.72rem;
  }

  .case-card__fact p {
    font-size: 0.9rem;
    line-height: 1.56;
  }

  .case-card__metrics {
    gap: 0.45rem;
  }

  .case-metric {
    padding: 0.48rem 0.68rem;
    font-size: 0.72rem;
  }

  .case-card__insight {
    padding-top: 0.85rem;
    font-size: 0.92rem;
    line-height: 1.5;
  }

  .case-card__footer {
    padding-top: 0.8rem;
  }

  .case-card__demo-link {
    font-size: 0.84rem;
  }
}

@media (min-width: 900px) {
  .cases-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1440px) {
  .cases-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  #cases .scroll-fade {
    opacity: 1;
    transform: none;
  }

  .cases-shell {
    padding: 1rem;
    border-radius: 1.5rem;
  }

  .cases-toolbar {
    gap: 0.7rem;
  }

  .cases-filter-group {
    flex-wrap: nowrap;
    gap: 0.5rem;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.25rem;
    scrollbar-width: none;
  }

  .cases-filter-group::-webkit-scrollbar {
    display: none;
  }

  .cases-filter {
    flex: 0 0 auto;
    width: auto;
    min-height: 2.7rem;
    padding: 0.72rem 0.92rem;
    border-radius: 0.9rem;
    font-size: 0.82rem;
    white-space: nowrap;
  }

  .cases-grid {
    gap: 0.8rem;
  }

  .cases-toggle {
    width: 100%;
    min-height: 3rem;
    padding: 0.85rem 1.15rem;
    border-radius: 1rem;
    font-size: 0.9rem;
  }

  .case-card {
    gap: 0.9rem;
    padding: 1.1rem;
    border-radius: 1.4rem;
  }

  .case-card__title {
    font-size: 1.28rem;
  }

  .case-card__subtitle {
    font-size: 0.92rem;
  }

  .case-card__facts {
    gap: 0.75rem;
  }

  .case-card__fact {
    padding: 0.78rem 0.85rem;
  }

  .case-card::after {
    width: 10rem;
    height: 10rem;
  }
}

/* === Hero === */

.hero-section {
  position: relative;
  isolation: isolate;
  background:
    radial-gradient(ellipse 80% 60% at 10% 20%, rgba(124, 58, 237, 0.07) 0%, transparent 50%),
    radial-gradient(ellipse 60% 50% at 90% 15%, rgba(139, 92, 246, 0.05) 0%, transparent 50%),
    #f8fafc;
}

/* ---------- decorative layers ---------- */

.hero-grid,
.hero-noise,
.hero-glow {
  pointer-events: none;
  position: absolute;
  inset: 0;
}

.hero-grid {
  opacity: 0.4;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.15) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 40%, black 20%, transparent 70%);
}

.hero-noise {
  opacity: 0.04;
  background-image: radial-gradient(rgba(0, 0, 0, 0.15) 0.5px, transparent 0.5px);
  background-size: 16px 16px;
  mix-blend-mode: multiply;
}

.hero-glow--primary {
  inset: auto auto 20% -6%;
  width: 26rem;
  height: 26rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.18) 0%, transparent 60%);
  filter: blur(30px);
  animation: heroPulse 7s ease-in-out infinite;
}

.hero-glow--secondary {
  inset: 6% -4% auto auto;
  width: 22rem;
  height: 22rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.14) 0%, transparent 60%);
  filter: blur(30px);
  animation: heroPulse 9s ease-in-out infinite reverse;
}

/* ---------- shell & layout ---------- */

.hero-shell {
  padding-top: clamp(1.5rem, 2.5vw, 2.5rem);
  padding-bottom: clamp(2rem, 3vw, 3rem);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(23.5rem, 0.82fr);
  gap: clamp(0.4rem, 0.9vw, 0.95rem);
  align-items: center;
  min-height: clamp(28rem, calc(100vh - 8rem), 36rem);
}

/* ---------- copy column ---------- */

.hero-copy {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 47rem;
}

/* badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.85rem;
  margin-bottom: 1.25rem;
  border-radius: 999px;
  border: 1px solid rgba(124, 58, 237, 0.12);
  background: rgba(245, 243, 255, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.hero-badge__dot {
  width: 0.5rem;
  height: 0.5rem;
  flex-shrink: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, #A78BFA, #A78BFA);
  box-shadow: 0 0 6px 2px rgba(167, 139, 250, 0.35);
}

.hero-badge span:last-child {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #475569;
}

/* title */
.hero-title {
  margin: 0 0 1rem;
  font-family: 'Manrope', 'Inter', sans-serif;
  font-size: clamp(2.55rem, 1.75rem + 2.35vw, 4.05rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.035em;
  text-wrap: balance;
  color: #0f172a;
}

/* subtitle / lead */
.hero-lead {
  max-width: 35rem;
  margin-bottom: 1.5rem;
  color: #475569;
  font-size: clamp(1.08rem, 0.98rem + 0.32vw, 1.22rem);
  line-height: 1.6;
}

/* Stats row */
.hero-stats {
  display: grid;
  grid-template-columns: auto 1px auto 1px auto;
  align-items: center;
  gap: 0;
  margin-bottom: 1.75rem;
  width: fit-content;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0 1.25rem;
}

.hero-stat:first-child {
  padding-left: 0;
}

.hero-stat__value {
  font-size: clamp(1.25rem, 1.1rem + 0.4vw, 1.5rem);
  font-weight: 800;
  color: #1a1a2e;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.hero-stat__label {
  font-size: 0.68rem;
  color: #94A3B8;
  font-family: 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1.3;
  white-space: nowrap;
}

.hero-stat__divider {
  width: 1px;
  height: 2.2rem;
  background: rgba(0, 0, 0, 0.1);
  flex-shrink: 0;
}

@media (max-width: 540px) {
  .hero-stats {
    display: flex;
    width: 100%;
    grid-template-columns: unset;
  }

  .hero-stat__divider {
    display: none;
  }

  .hero-stat {
    flex: 1;
    padding: 0 0.6rem;
    border-left: 1px solid rgba(0,0,0,0.1);
  }

  .hero-stat:first-child {
    padding-left: 0;
    border-left: none;
  }

  .hero-stat__value {
    font-size: 1.15rem;
  }

  .hero-stat__label {
    font-size: 0.58rem;
    white-space: normal;
  }
}

/* CTA buttons */
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}

.hero-btn {
  min-height: 3.1rem;
  box-shadow:
    0 8px 24px rgba(124, 58, 237, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.hero-btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.1rem;
  color: #334155;
  border: 1px solid rgba(0, 0, 0, 0.12);
  background: rgba(255, 255, 255, 0.7);
  transition: all 0.25s ease;
}

.hero-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(0, 0, 0, 0.18);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

/* platform pills */
.hero-platforms {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hero-platform {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.07);
  background: rgba(255, 255, 255, 0.5);
  color: #64748B;
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}

.hero-platform:hover {
  color: #1e293b;
  border-color: rgba(124, 58, 237, 0.2);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.hero-platform span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---------- visual column ---------- */

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  min-height: 27rem;
  perspective: 1600px;
}

.hero-visual__plane {
  position: absolute;
  border-radius: 2rem;
  transform-style: preserve-3d;
}

.hero-visual__plane--back {
  inset: 6% -3% 8% 10%;
  border: 1px solid rgba(167, 139, 250, 0.2);
  background: linear-gradient(145deg, rgba(167, 139, 250, 0.1), rgba(167, 139, 250, 0.02));
  box-shadow: 0 8px 32px rgba(167, 139, 250, 0.08);
  transform: rotateX(16deg) rotateY(-14deg) translateZ(-30px);
}

.hero-visual__plane--front {
  inset: 12% 0 14% 17%;
  border: 1px solid rgba(139, 92, 246, 0.15);
  background: linear-gradient(145deg, rgba(139, 92, 246, 0.07), rgba(139, 92, 246, 0.02));
  box-shadow: 0 6px 24px rgba(139, 92, 246, 0.06);
  transform: rotateX(10deg) rotateY(-8deg) translateZ(-8px);
}

.hero-visual__float {
  position: absolute;
  z-index: 1;
  display: grid;
  gap: 0.4rem;
  padding: 0.75rem;
  border-radius: 0.9rem;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(0, 0, 0, 0.07);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.hero-visual__float span {
  display: block;
  height: 0.35rem;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.06), rgba(167, 139, 250, 0.4), rgba(192, 132, 252, 0.15));
}

.hero-visual__float--top {
  top: 9%;
  right: -2%;
  width: 8rem;
  animation: heroFloat 7s ease-in-out infinite;
}

.hero-visual__float--top span:nth-child(1) { width: 72%; }
.hero-visual__float--top span:nth-child(2) { width: 100%; }
.hero-visual__float--top span:nth-child(3) { width: 55%; }

.hero-visual__float--bottom {
  left: 9%;
  bottom: 11%;
  width: 9rem;
  animation: heroFloat 8s ease-in-out infinite reverse;
}

.hero-visual__float--bottom span:nth-child(1) { width: 85%; }
.hero-visual__float--bottom span:nth-child(2) { width: 60%; }
.hero-visual__float--bottom span:nth-child(3) { width: 100%; }
.hero-visual__float--bottom span:nth-child(4) { width: 50%; }

/* dashboard card */
.hero-dashboard {
  position: relative;
  z-index: 2;
  width: min(100%, 27rem);
  padding: 0.65rem;
  margin-right: -0.85rem;
  border-radius: 1.35rem;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.95), rgba(248, 250, 252, 0.98));
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.1),
    0 8px 24px rgba(0, 0, 0, 0.05),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  transform: rotateX(6deg) rotateY(-8deg);
}

.hero-dashboard::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(140deg, rgba(0, 0, 0, 0.04), rgba(167, 139, 250, 0.12), rgba(167, 139, 250, 0.06), transparent 80%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  pointer-events: none;
}

/* ---------- hero responsive ---------- */

@media (max-width: 1360px) {
  .hero-layout {
    grid-template-columns: minmax(0, 1.08fr) minmax(21.5rem, 0.9fr);
    gap: clamp(0.55rem, 1vw, 0.95rem);
  }

  .hero-title {
    font-size: clamp(2.2rem, 1.45rem + 1.8vw, 3.3rem);
  }

  .hero-dashboard {
    width: min(100%, 24.5rem);
    margin-right: -0.45rem;
    transform: rotateX(4deg) rotateY(-6deg);
  }
}

@media (max-width: 1023px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    min-height: auto;
  }

  .hero-copy {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .hero-shell {
    padding-top: 1.25rem;
    padding-bottom: 2rem;
  }

  .hero-badge {
    gap: 0.5rem;
    padding: 0.45rem 0.7rem;
  }

  .hero-badge span:last-child {
    font-size: 0.58rem;
  }

  .hero-title {
    font-size: clamp(1.85rem, 1.2rem + 3vw, 2.5rem);
    line-height: 1.08;
  }

  .hero-lead {
    font-size: 1rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-btn,
  .hero-btn-secondary {
    min-width: 0;
    width: 100%;
  }

  .hero-platforms {
    gap: 0.4rem;
  }

  .hero-platform {
    padding: 0.4rem 0.6rem;
  }
}

/* === Form Inputs === */
.form-input {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.12);
  color: #1e293b;
  outline: none;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  transition: all 0.3s ease;
}

.form-input::placeholder {
  color: #94a3b8;
}

.form-input:focus {
  border-color: rgba(124, 58, 237, 0.5);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1), 0 1px 2px rgba(0, 0, 0, 0.04);
}

select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* === Case Demo Modal === */
.case-demo-modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.case-demo-modal.hidden {
  display: none;
}

.case-demo-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.case-demo-modal__dialog {
  position: relative;
  width: min(100%, 42rem);
  max-height: calc(100vh - 3rem);
  overflow: auto;
  border-radius: 1.75rem;
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(167, 139, 250, 0.12) 0%, transparent 42%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.99) 0%, rgba(248, 250, 252, 0.99) 100%);
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow:
    0 30px 80px rgba(15, 23, 42, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.88);
}

.case-demo-modal__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  color: #475569;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}

.case-demo-modal__close:hover,
.case-demo-modal__close:focus-visible {
  background: #ffffff;
  color: #0f172a;
  transform: translateY(-1px);
  outline: none;
}

.case-demo-modal__content {
  position: relative;
  padding: 2rem;
}

.case-demo-modal__eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 0.38rem 0.7rem;
  margin-bottom: 1rem;
  border-radius: 999px;
  background: rgba(124, 58, 237, 0.1);
  color: #7C3AED;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.case-demo-modal__title {
  font-size: clamp(1.8rem, 1.4rem + 1vw, 2.35rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: #0f172a;
}

.case-demo-modal__lead {
  margin-top: 0.9rem;
  color: #475569;
  font-size: 1rem;
  line-height: 1.7;
}

.case-demo-modal__form {
  margin-top: 1.5rem;
}

.case-demo-modal__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.case-demo-modal__input {
  width: 100%;
}

.case-demo-modal__consent {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-top: 1rem;
  color: #334155;
  font-size: 0.92rem;
  line-height: 1.55;
}

.case-demo-modal__consent input {
  width: 1rem;
  height: 1rem;
  margin-top: 0.18rem;
  accent-color: #7C3AED;
  flex-shrink: 0;
}

.case-demo-modal__note {
  margin-top: 0.9rem;
  color: #64748B;
  font-size: 0.9rem;
  line-height: 1.55;
}

.case-demo-modal__submit {
  width: 100%;
  margin-top: 1.25rem;
  padding: 0.95rem 1.25rem;
}

.case-demo-modal__success {
  min-height: 18rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

body.case-demo-open {
  overflow: hidden;
}

@media (max-width: 640px) {
  .case-demo-modal {
    padding: 1rem;
    align-items: flex-end;
  }

  .case-demo-modal__dialog {
    width: 100%;
    max-height: calc(100vh - 1rem);
    border-radius: 1.5rem 1.5rem 0 0;
  }

  .case-demo-modal__content {
    padding: 1.35rem 1.1rem 1.2rem;
  }

  .case-demo-modal__grid {
    grid-template-columns: 1fr;
  }

  .case-demo-modal__title {
    font-size: 1.6rem;
  }
}

/* === CTA Block === */
.cta-block {
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(124, 58, 237, 0.06) 0%, transparent 60%),
    linear-gradient(180deg, rgba(248, 250, 252, 1) 0%, rgba(241, 245, 249, 1) 100%);
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.cta-glow {
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 500px;
  background: radial-gradient(
    ellipse at center,
    rgba(124, 58, 237, 0.1) 0%,
    rgba(124, 58, 237, 0.05) 50%,
    transparent 70%
  );
  pointer-events: none;
}

/* === Tab Buttons === */
.tab-btn {
  color: #64748B;
}

.tab-btn.active {
  background: #ffffff;
  color: #0f172a;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
}

.tab-btn:not(.active):hover {
  color: #0f172a;
  background: rgba(0, 0, 0, 0.03);
}

/* === Tab Content === */
.tab-content {
  animation: fadeIn 0.4s ease;
}

.tab-content.hidden {
  display: none;
}

/* === Node Diagram === */
.node-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.node {
  padding: 12px 24px;
  border-radius: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  position: relative;
}

.node-input {
  background: rgba(124, 58, 237, 0.06);
  border: 1px solid rgba(124, 58, 237, 0.2);
  color: #7C3AED;
}

.node-ai {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(124, 58, 237, 0.1));
  border: 1px solid rgba(124, 58, 237, 0.2);
  color: #1e293b;
  padding: 16px 32px;
  font-size: 16px;
  box-shadow: 0 0 20px rgba(124, 58, 237, 0.08);
}

.node-output {
  background: rgba(34, 197, 94, 0.06);
  border: 1px solid rgba(34, 197, 94, 0.2);
  color: #16a34a;
}

.node-line {
  width: 48px;
  height: 2px;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.08), rgba(0, 0, 0, 0.15), rgba(0, 0, 0, 0.08));
  position: relative;
}

.node-line::after {
  content: '';
  position: absolute;
  right: -4px;
  top: -3px;
  width: 8px;
  height: 8px;
  border-right: 2px solid rgba(0, 0, 0, 0.15);
  border-top: 2px solid rgba(0, 0, 0, 0.15);
  transform: rotate(45deg);
}

/* === RF Law / Russian Market Block === */
.rflaw-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 5rem;
  align-items: start;
}

.rflaw-left {
  position: sticky;
  top: 6rem;
}

.rflaw-right {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.rflaw-item {
  display: flex;
  gap: 1.25rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid rgba(0,0,0,0.07);
}

.rflaw-item:first-child {
  padding-top: 0;
}

.rflaw-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.rflaw-item__icon {
  width: 2.5rem;
  height: 2.5rem;
  background: rgba(124,58,237,0.08);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #7C3AED;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.rflaw-item__title {
  font-size: 1rem;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 0.4rem;
  line-height: 1.4;
}

.rflaw-item__desc {
  font-size: 0.9rem;
  color: #64748B;
  line-height: 1.65;
}

@media (max-width: 768px) {
  .rflaw-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .rflaw-left {
    position: static;
  }
}

/* === Products Grid === */
.products-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.product-card {
  display: flex;
  gap: 1.25rem;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 1.25rem;
  transition: box-shadow 0.2s, border-color 0.2s;
}

.product-card:hover {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  border-color: rgba(124, 58, 237, 0.2);
}

.product-card__icon {
  flex-shrink: 0;
  width: 2.75rem;
  height: 2.75rem;
  background: rgba(124, 58, 237, 0.08);
  border-radius: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #7C3AED;
  margin-top: 0.1rem;
}

.product-card__body {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.product-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #1a1a2e;
  line-height: 1.3;
}

.product-card__desc {
  font-size: 0.88rem;
  color: #64748B;
  line-height: 1.65;
}

.product-card__metric {
  font-size: 0.8rem;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  color: #7C3AED;
  background: rgba(124, 58, 237, 0.07);
  border-radius: 0.5rem;
  padding: 0.4rem 0.75rem;
  display: inline-block;
  margin-top: 0.25rem;
}

.product-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.25rem;
}

.product-card__tags span {
  font-size: 0.7rem;
  font-family: 'JetBrains Mono', monospace;
  color: #94A3B8;
  background: rgba(0, 0, 0, 0.04);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
}

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

/* === Integration Nodes === */
.integration-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 20px 24px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  color: #64748B;
  font-size: 12px;
  transition: all 0.3s ease;
  min-width: 100px;
}

.integration-node:hover {
  border-color: rgba(124, 58, 237, 0.25);
  color: #0f172a;
  background: rgba(245, 243, 255, 0.9);
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.08);
  transform: translateY(-2px);
}

/* === Team === */
.team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (min-width: 640px) {
  .team-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1024px) {
  .team-grid { grid-template-columns: repeat(5, 1fr); }
}

.team-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  overflow: hidden;
  padding: 0 1rem 1.5rem;
  border-radius: 1.25rem;
  background: linear-gradient(180deg, rgba(255,255,255,0.98) 0%, rgba(248,250,252,0.98) 100%);
  border: 1px solid rgba(0,0,0,0.07);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.team-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.team-card__avatar {
  width: calc(100% + 2rem);
  margin: 0 -1rem 1rem;
}

.team-card__avatar img {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 1.25rem 1.25rem 0.9rem 0.9rem;
}

.team-card__avatar-placeholder {
  width: 100%;
  height: 200px;
  border-radius: 1.25rem 1.25rem 0.9rem 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

.team-card__name {
  font-size: 0.95rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 0.25rem;
}

.team-card__role {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: #7C3AED;
  background: rgba(124,58,237,0.08);
  padding: 0.2rem 0.6rem;
  border-radius: 0.5rem;
  margin-bottom: 0.75rem;
}

.team-card__desc {
  font-size: 0.8rem;
  color: #64748b;
  line-height: 1.5;
}

/* === Founders === */
.founders-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.founder-card {
  display: flex;
  gap: 2rem;
  padding: 2.5rem;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 1.5rem;
  transition: box-shadow 0.2s;
}

.founder-card:hover {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.founder-card__photo {
  flex-shrink: 0;
  width: 5.5rem;
  height: 5.5rem;
}

.founder-card__avatar-placeholder {
  width: 100%;
  height: 100%;
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
}

.founder-card__body {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
}

.founder-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.founder-card__name {
  font-size: 1.15rem;
  font-weight: 700;
  color: #0f172a;
  line-height: 1.2;
}

.founder-card__role {
  display: block;
  font-size: 0.75rem;
  color: #7C3AED;
  font-family: 'JetBrains Mono', monospace;
  margin-top: 0.2rem;
}

.founder-card__handle {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-family: 'JetBrains Mono', monospace;
  color: #7C3AED;
  background: rgba(124, 58, 237, 0.08);
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.15s;
}

.founder-card__handle:hover {
  background: rgba(124, 58, 237, 0.15);
}

.founder-card__desc {
  font-size: 0.88rem;
  color: #64748B;
  line-height: 1.7;
}

.founder-card__content {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.25rem;
}

.founder-content-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.82rem;
  color: #475569;
  line-height: 1.5;
}

.founder-content-item svg {
  flex-shrink: 0;
  color: #7C3AED;
  margin-top: 0.1rem;
}

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

@media (max-width: 540px) {
  .founder-card {
    flex-direction: column;
    gap: 1.25rem;
    padding: 1.75rem;
  }

  .founder-card__photo {
    width: 4rem;
    height: 4rem;
  }
}

/* === Reviews === */
.reviews-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

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

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

.review-card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  border-radius: 1.25rem;
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(124,58,237,0.04) 0%, transparent 40%),
    linear-gradient(180deg, rgba(255,255,255,0.98) 0%, rgba(248,250,252,0.98) 100%);
  border: 1px solid rgba(0,0,0,0.07);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04), inset 0 1px 0 rgba(255,255,255,0.8);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.review-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.07);
}

.review-card__stars {
  color: #f59e0b;
  font-size: 1rem;
  letter-spacing: 2px;
  margin-bottom: 0.75rem;
}

.review-card__text {
  font-size: 0.88rem;
  color: #334155;
  line-height: 1.65;
  flex: 1;
  margin-bottom: 1rem;
}

.review-card__footer {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(0,0,0,0.06);
}

.review-card__product {
  font-size: 0.8rem;
  font-weight: 600;
  color: #7C3AED;
  background: rgba(124,58,237,0.08);
  padding: 0.2rem 0.6rem;
  border-radius: 0.5rem;
}

/* === FAQ === */
.faq-toggle {
  cursor: pointer;
  background: none;
  border: none;
  color: inherit;
  font: inherit;
}

.faq-toggle[aria-expanded="true"] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  animation: slideDown 0.3s ease;
}

/* === Animations === */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; max-height: 0; }
  to { opacity: 1; max-height: 200px; }
}

@keyframes heroPulse {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.08); opacity: 1; }
}

@keyframes heroFloat {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(0, -14px, 0); }
}

/* Fade-in on load */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeIn 0.8s ease forwards;
}

.fade-in-delay-1 { animation-delay: 0.15s; }
.fade-in-delay-2 { animation-delay: 0.3s; }
.fade-in-delay-3 { animation-delay: 0.45s; }

/* Scroll-triggered fade */
.scroll-fade {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-fade.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Pulse animation for AI node === */
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 16px rgba(124, 58, 237, 0.06); }
  50% { box-shadow: 0 0 32px rgba(124, 58, 237, 0.12); }
}

.node-ai {
  animation: pulse-glow 3s ease-in-out infinite;
}

/* === Chat Mockup === */
.chat-mockup {
  position: relative;
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(167, 139, 250, 0.08) 0%, transparent 38%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 1) 100%);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 1.55rem;
  overflow: hidden;
  box-shadow:
    0 12px 40px rgba(0, 0, 0, 0.1),
    0 4px 12px rgba(0, 0, 0, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.chat-mockup::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.01), transparent 12%),
    linear-gradient(120deg, transparent 0%, rgba(0, 0, 0, 0.01) 44%, transparent 58%);
  pointer-events: none;
}

.chat-mockup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  background: rgba(248, 250, 252, 0.5);
}

.chat-mockup-body {
  position: relative;
  padding: 1.15rem 1.2rem 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 26rem;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.08) 1px, transparent 1px);
  background-size: 84px 84px;
}

.hero-console__rail {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
}

.hero-console__rail span {
  display: block;
  height: 0.48rem;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.06), rgba(167, 139, 250, 0.5));
  box-shadow: 0 0 12px rgba(167, 139, 250, 0.08);
}

.hero-console__rail span:nth-child(1) { width: 84%; }
.hero-console__rail span:nth-child(2) { width: 100%; }
.hero-console__rail span:nth-child(3) { width: 60%; }
.hero-console__rail span:nth-child(4) { width: 76%; }

.hero-console__thread {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.chat-msg {
  max-width: 85%;
  padding: 0.85rem 1rem;
  border-radius: 1.15rem;
  font-size: 0.84rem;
  line-height: 1.62;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.03);
}

.chat-msg-user {
  align-self: flex-end;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(167, 139, 250, 0.06));
  border: 1px solid rgba(167, 139, 250, 0.22);
  color: #1e293b;
}

.chat-msg-ai {
  align-self: flex-start;
  background: rgba(248, 250, 252, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.06);
  color: #475569;
}

.chat-msg-ai--stats {
  width: min(100%, 18.75rem);
}

.chat-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: 100%;
  gap: 0.55rem;
  margin-top: 0.85rem;
}

.chat-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.22rem;
  min-width: 0;
  min-height: 5rem;
  justify-content: center;
  padding: 0.7rem 0.55rem;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.02), rgba(0, 0, 0, 0.01));
  border-radius: 0.9rem;
  border: 1px solid rgba(0, 0, 0, 0.06);
}

.chat-stat-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px;
  font-weight: 700;
}

.chat-stat-label {
  font-size: 10px;
  color: #64748B;
  line-height: 1.35;
  text-align: center;
  text-wrap: balance;
}

/* Chat typing indicator */
.chat-typing {
  align-self: flex-start;
  display: flex;
  gap: 4px;
  padding: 0.8rem 1rem;
  background: rgba(248, 250, 252, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 1rem;
}

.chat-typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #94a3b8;
  animation: typing-dot 1.4s infinite;
}

.chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-dot {
  0%, 60%, 100% { opacity: 0.3; transform: translateY(0); }
  30% { opacity: 1; transform: translateY(-4px); }
}

/* Chat message staggered appearance */
.chat-anim-1 { opacity: 0; animation: chatMsgIn 0.5s ease forwards 0.8s; }
.chat-anim-2 { opacity: 0; animation: chatMsgIn 0.5s ease forwards 1.6s; }
.chat-anim-3 { opacity: 0; animation: chatMsgIn 0.5s ease forwards 2.8s; }
.chat-anim-4 { opacity: 0; animation: chatMsgIn 0.5s ease forwards 4.0s; }
.chat-anim-5 { opacity: 0; animation: chatMsgIn 0.5s ease forwards 4.8s; }

@keyframes chatMsgIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === Responsive === */
@media (max-width: 768px) {
  .problem-panel {
    grid-template-columns: minmax(0, 1fr);
    min-height: auto;
  }

  .problem-panel__body {
    padding: 1.45rem 1.15rem 1.2rem;
  }

  .problem-panel__copy h3 {
    max-width: 100%;
  }

  .problem-panel__visual {
    min-height: 12rem;
    border-left: none;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
  }

  .problem-panel__visual::before {
    background:
      linear-gradient(180deg, rgba(241, 245, 249, 0.88) 0%, rgba(241, 245, 249, 0.42) 24%, rgba(241, 245, 249, 0) 60%),
      radial-gradient(circle at 24% 18%, var(--problem-accent-soft), transparent 58%);
  }

  .node-diagram {
    transform: scale(0.85);
  }
}