/* ================================================================
   about.css — About page
   ================================================================ */

.about-page {
  padding-bottom: 5rem;
}

/* ---- Features section (from explore) ---- */
.about-features-section {
  padding-block: 3.5rem;
  border-top: 1px solid var(--color-border);
}

.about-features-logo-heading {
  font-size: clamp(1.8rem, 4vw, 2.5rem) !important;
  font-weight: 800 !important;
  margin-bottom: 0.4rem !important;
  background: linear-gradient(135deg, #a78bfa 0%, #818cf8 50%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-secondary, #8a8fa8);
  margin-bottom: 0;
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

@media (min-width: 600px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}

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

/* Glassmorphism card */
.feature-card {
  padding: 2rem 1.5rem 1.75rem;
  border-radius: 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color 0.25s, background 0.25s, transform 0.25s, box-shadow 0.25s;
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: 16px 16px 0 0;
  opacity: 0;
  transition: opacity 0.25s;
}

.feature-card:hover {
  transform: translateY(-7px) scale(1.015);
  box-shadow: 0 16px 40px rgba(0,0,0,0.18);
}

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

.feature-card--ai:hover    { border-color: rgba(139,92,246,0.4); }
.feature-card--ai::before  { background: #8b5cf6; }
.feature-card--source:hover{ border-color: rgba(59,130,246,0.4); }
.feature-card--source::before{ background: #3b82f6; }
.feature-card--image:hover { border-color: rgba(244,63,94,0.4); }
.feature-card--image::before{ background: #f43f5e; }
.feature-card--api:hover   { border-color: rgba(16,185,129,0.4); }
.feature-card--api::before { background: #10b981; }
.feature-card--lang:hover  { border-color: rgba(245,158,11,0.4); }
.feature-card--lang::before{ background: #f59e0b; }
.feature-card--article:hover{ border-color: rgba(100,116,139,0.4); }
.feature-card--article::before{ background: #64748b; }
.feature-card--speed:hover { border-color: rgba(6,182,212,0.4); }
.feature-card--speed::before{ background: #06b6d4; }

.feature-card__icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.feature-icon--purple  { background: rgba(139,92,246,0.12); color: #a78bfa; }
.feature-icon--blue    { background: rgba(59,130,246,0.12);  color: #60a5fa; }
.feature-icon--rose    { background: rgba(244,63,94,0.12);   color: #fb7185; }
.feature-icon--emerald { background: rgba(16,185,129,0.12);  color: #34d399; }
.feature-icon--amber   { background: rgba(245,158,11,0.12);  color: #f59e0b; }
.feature-icon--slate   { background: rgba(100,116,139,0.12); color: #94a3b8; }
.feature-icon--cyan    { background: rgba(6,182,212,0.12);   color: #22d3ee; }

.feature-card__body { flex: 1; min-width: 0; }

.feature-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-primary, #f0f0f0);
  margin-bottom: 0.6rem;
}

.feature-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary, #959aaa);
  line-height: 1.7;
}

/* ================================================================
   Semantic Image Search explainer
   ================================================================ */
.about-semantic {
  position: relative;
  padding: 6rem 0;
  overflow: hidden;
  border-top: 1px solid var(--color-border);
}

/* Animated dot-grid background */
.semantic-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(139,92,246,0.18) 1px, transparent 1px),
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(56,189,248,0.08), transparent 70%);
  background-size: 32px 32px, 100% 100%;
  animation: semantic-grid-shift 20s linear infinite;
  pointer-events: none;
}

@keyframes semantic-grid-shift {
  0%   { background-position: 0 0, 0 0; }
  100% { background-position: 32px 32px, 0 0; }
}

.semantic-inner {
  position: relative;
  text-align: center;
  max-width: 780px;
  margin: 0 auto;
}

/* Badge */
.semantic-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #a78bfa;
  background: rgba(139,92,246,0.12);
  border: 1px solid rgba(139,92,246,0.3);
  border-radius: 999px;
  padding: 0.3rem 0.9rem;
  margin-bottom: 1.5rem;
}

.semantic-badge__pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #a78bfa;
  box-shadow: 0 0 0 0 rgba(167,139,250,0.6);
  animation: semantic-pulse 2s infinite;
}

@keyframes semantic-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(167,139,250,0.6); }
  70%  { box-shadow: 0 0 0 8px rgba(167,139,250,0); }
  100% { box-shadow: 0 0 0 0 rgba(167,139,250,0); }
}

/* Heading */
.semantic-heading {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-text-primary, #f0f0f0);
  margin-bottom: 1.25rem;
}

.semantic-heading__accent {
  background: linear-gradient(135deg, #a78bfa 0%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Description */
.semantic-desc {
  font-size: 1.05rem;
  color: var(--color-text-secondary, #8a8fa8);
  line-height: 1.8;
  max-width: 600px;
  margin: 0 auto 3rem;
}

/* Demo flow */
.semantic-demo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

/* Node */
.snode {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1.5rem 1.25rem;
  border-radius: 16px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  min-width: 150px;
  max-width: 180px;
  transition: border-color 0.3s, box-shadow 0.3s;
  animation: snode-float 4s ease-in-out infinite;
}

.snode--query  { animation-delay: 0s; }
.snode--vector { animation-delay: 0.4s; border-color: rgba(139,92,246,0.3); }
.snode--results{ animation-delay: 0.8s; border-color: rgba(56,189,248,0.3); }

.snode:hover {
  border-color: rgba(167,139,250,0.5);
  box-shadow: 0 0 20px rgba(139,92,246,0.2);
}

@keyframes snode-float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

.snode__icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(139,92,246,0.12);
  color: #a78bfa;
  display: flex;
  align-items: center;
  justify-content: center;
}

.snode--vector .snode__icon { background: rgba(139,92,246,0.18); }
.snode--results .snode__icon { background: rgba(56,189,248,0.12); color: #38bdf8; }

.snode__label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary, #8a8fa8);
}

.snode__value {
  font-size: 0.8rem;
  color: #a78bfa;
  font-style: italic;
  text-align: center;
}

/* Animated dots in vector node */
.snode__dots {
  display: flex;
  gap: 4px;
  margin-top: 0.25rem;
}

.sdot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  animation: sdot-blink 2s ease-in-out infinite;
}
.sdot--a { background: #a78bfa; animation-delay: 0s; }
.sdot--b { background: #818cf8; animation-delay: 0.2s; }
.sdot--c { background: #38bdf8; animation-delay: 0.4s; }
.sdot--d { background: #a78bfa; animation-delay: 0.6s; opacity: 0.5; }
.sdot--e { background: #818cf8; animation-delay: 0.8s; opacity: 0.3; }

@keyframes sdot-blink {
  0%, 100% { opacity: 0.3; transform: scale(0.85); }
  50%       { opacity: 1;   transform: scale(1.2); }
}

/* Thumbnails in result node */
.snode__thumbs {
  display: flex;
  gap: 4px;
  margin-top: 0.25rem;
}

.sthumb {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  animation: sthumb-appear 2.4s ease-in-out infinite;
}
.sthumb--1 { background: linear-gradient(135deg,#a78bfa,#818cf8); animation-delay: 0s; }
.sthumb--2 { background: linear-gradient(135deg,#38bdf8,#818cf8); animation-delay: 0.3s; }
.sthumb--3 { background: linear-gradient(135deg,#f59e0b,#fb7185); animation-delay: 0.6s; }

@keyframes sthumb-appear {
  0%, 100% { opacity: 0.4; transform: scale(0.9); }
  50%       { opacity: 1;   transform: scale(1.05); }
}

/* Arrow between nodes */
.snode-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0 0.5rem;
  color: rgba(167,139,250,0.5);
}

.snode-arrow__label {
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-text-secondary, #8a8fa8);
  white-space: nowrap;
}

@media (max-width: 700px) {
  .semantic-demo { flex-direction: column; }
  .snode-arrow { transform: rotate(90deg); margin: 0.25rem 0; }
  .snode-arrow__label { display: none; }
  .snode { min-width: 140px; }
}

/* Pills */
.semantic-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 2.5rem;
}

.spill {
  font-size: 0.8rem;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--color-text-secondary, #8a8fa8);
  cursor: default;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.spill:hover {
  background: rgba(139,92,246,0.12);
  border-color: rgba(139,92,246,0.3);
  color: #a78bfa;
}

/* CTA */
.semantic-cta {
  font-size: 1rem;
  padding: 0.8rem 2.25rem;
  border-radius: 999px;
  box-shadow: 0 0 30px rgba(139,92,246,0.3);
  transition: box-shadow 0.3s;
}

.semantic-cta:hover {
  box-shadow: 0 0 50px rgba(139,92,246,0.5);
}

/* ---- Hero — full viewport ---- */
.about-hero {
  min-height: calc(100svh - 60px);
  display: flex;
  align-items: center;
  padding: 4rem 0;
  position: relative;
  overflow: hidden;
}

/* Animated radial gradient bg */
.about-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 50% -5%, rgba(139,92,246,0.22), transparent 65%),
    radial-gradient(ellipse 40% 40% at 80% 80%, rgba(56,189,248,0.08), transparent 60%);
  pointer-events: none;
  animation: hero-bg-breathe 8s ease-in-out infinite;
}

@keyframes hero-bg-breathe {
  0%, 100% { opacity: 0.8; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.04); }
}

/* Moving star-dots */
.about-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.07) 1px, transparent 1px);
  background-size: 48px 48px;
  animation: hero-dots-drift 30s linear infinite;
  pointer-events: none;
}

@keyframes hero-dots-drift {
  0%   { background-position: 0 0; }
  100% { background-position: 48px 48px; }
}

.about-hero-content {
  max-width: 750px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

/* Hero h1: word-by-word reveal handled by JS */
.about-hero-content h1 {
  font-size: clamp(2.2rem, 5.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.13;
  color: var(--color-text-primary);
  margin-bottom: 1.4rem;
}

/* Gradient shimmer on first word */
.about-hero-content h1 .hero-word-accent {
  background: linear-gradient(135deg, #a78bfa 0%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-hero-sub {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: 2.25rem;
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: 2.25rem;
}

.about-hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Scroll-hint arrow */
.hero-scroll-hint {
  position: absolute;
  bottom: 3.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(167, 139, 250, 0.95);
  z-index: 1;
  animation: scroll-hint-in 0.9s cubic-bezier(0.16, 1, 0.3, 1) 1.2s both;
}

@keyframes scroll-hint-in {
  from { opacity: 0; transform: translateX(-50%) translateY(12px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.hero-scroll-hint__line {
  width: 2px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, #a78bfa);
  border-radius: 2px;
  animation: scroll-line-pulse 2.4s ease-in-out infinite;
}

@keyframes scroll-line-pulse {
  0%, 100% { opacity: 0.6; transform: scaleY(0.85); }
  50%       { opacity: 1;   transform: scaleY(1); }
}

.hero-scroll-hint svg {
  filter: drop-shadow(0 0 8px rgba(167, 139, 250, 0.9));
  animation: scroll-bounce 2.4s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(8px); }
}

/* ---- Mission ---- */
.about-mission {
  padding: 4rem 0;
  border-top: 1px solid var(--color-border);
}
.about-mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.about-mission h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
}
.about-mission p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin-bottom: 0.75rem;
}
.about-differentiators {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.diff-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1rem;
  transition: border-color 0.2s;
}
.diff-item:hover {
  border-color: rgba(139, 92, 246, 0.3);
}
.diff-icon {
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
}
.diff-item h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.25rem;
}
.diff-item p {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.55;
}

/* ---- Stats ---- */
.about-stats {
  padding: 2.5rem 0;
  background: rgba(139, 92, 246, 0.03);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 2rem;
}
.section-sub {
  font-size: 1rem;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: -1.5rem auto 2rem;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.stat-card {
  text-align: center;
  padding: 1.75rem 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.stat-card:hover {
  border-color: rgba(139, 92, 246, 0.4);
  transform: translateY(-5px);
  box-shadow: 0 14px 36px rgba(139, 92, 246, 0.12);
}
.stat-value {
  display: flex;
  align-items: baseline;
  gap: 3px;
}
.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}
.stat-unit {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.8;
}
.stat-label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-top: 0.5rem;
}

/* ---- Tech stack ---- */
.about-stack {
  padding: 4rem 0;
  border-top: 1px solid var(--color-border);
}
.stack-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}
.stack-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 1.5rem 1rem;
  text-align: center;
  transition: border-color 0.2s, transform 0.2s;
}
.stack-item:hover {
  border-color: rgba(139, 92, 246, 0.4);
  transform: translateY(-3px);
}
.stack-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.875rem;
}
.stack-icon--ai     { background: rgba(139, 92, 246, 0.12); color: #a78bfa; }
.stack-icon--db     { background: rgba(59, 130, 246, 0.12); color: #60a5fa; }
.stack-icon--api    { background: rgba(16, 185, 129, 0.12); color: #34d399; }
.stack-icon--web    { background: rgba(245, 158, 11, 0.12); color: #fbbf24; }
.stack-icon--postgres { background: rgba(59, 130, 246, 0.12); color: #60a5fa; }
.stack-icon--redis  { background: rgba(239, 68, 68, 0.12); color: #f87171; }
.stack-icon--cloudflare { background: rgba(245, 158, 11, 0.12); color: #fbbf24; }
.stack-icon--docker { background: rgba(59, 130, 246, 0.12); color: #60a5fa; }

.stack-item h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.4rem;
}
.stack-item p {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin: 0;
}

/* ---- Image sources ---- */
.about-sources {
  padding: 4rem 0;
  border-top: 1px solid var(--color-border);
}
.sources-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.source-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 1.5rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  text-decoration: none;
  transition: border-color 0.2s, transform 0.2s;
  text-align: center;
}
.source-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}
.source-card--soon {
  opacity: 0.5;
  cursor: default;
  pointer-events: none;
}
.source-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
}
.source-count {
  font-size: 0.825rem;
  color: var(--color-text-secondary);
}

/* ---- Use Cases ---- */
.about-usecases {
  padding: 4rem 0;
  border-top: 1px solid var(--color-border);
}
.usecases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.usecase-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 2rem 1.5rem 1.75rem;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  position: relative;
  overflow: hidden;
}
.usecase-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: 16px 16px 0 0;
  opacity: 0;
  transition: opacity 0.25s;
}
.usecase-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}
.usecase-card:hover::before {
  opacity: 1;
}
/* Accent colors per card */
.usecase-card--dev:hover   { border-color: rgba(139, 92, 246, 0.4); }
.usecase-card--dev::before  { background: #8b5cf6; }
.usecase-card--write:hover { border-color: rgba(245, 158, 11, 0.4); }
.usecase-card--write::before{ background: #f59e0b; }
.usecase-card--social:hover{ border-color: rgba(59, 130, 246, 0.4); }
.usecase-card--social::before{ background: #3b82f6; }
.usecase-card--agency:hover{ border-color: rgba(16, 185, 129, 0.4); }
.usecase-card--agency::before{ background: #10b981; }
.usecase-card--design:hover{ border-color: rgba(244, 63, 94, 0.4); }
.usecase-card--design::before{ background: #f43f5e; }
.usecase-card--press:hover { border-color: rgba(100, 116, 139, 0.4); }
.usecase-card--press::before{ background: #64748b; }

/* Icon container */
.usecase-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.usecase-icon--purple  { background: rgba(139, 92, 246, 0.12); color: #a78bfa; }
.usecase-icon--amber   { background: rgba(245, 158, 11, 0.12); color: #f59e0b; }
.usecase-icon--blue    { background: rgba(59, 130, 246, 0.12); color: #60a5fa; }
.usecase-icon--emerald { background: rgba(16, 185, 129, 0.12); color: #34d399; }
.usecase-icon--rose    { background: rgba(244, 63, 94, 0.12); color: #fb7185; }
.usecase-icon--slate   { background: rgba(100, 116, 139, 0.12); color: #94a3b8; }

.usecase-body {
  flex: 1;
  min-width: 0;
}
.usecase-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
}
.usecase-card p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}
.usecase-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  transition: gap 0.2s, opacity 0.2s;
}
.usecase-link:hover {
  gap: 0.6rem;
  opacity: 0.85;
}

/* ---- Spotlight (Article Image Search) — modernised ---- */
.about-spotlight {
  position: relative;
  padding: 6rem 0;
  border-top: 1px solid var(--color-border);
  background:
    radial-gradient(1000px 500px at 10% 0%, rgba(139, 92, 246, 0.08), transparent 60%),
    radial-gradient(800px 400px at 90% 100%, rgba(59, 130, 246, 0.06), transparent 60%),
    linear-gradient(180deg, rgba(139, 92, 246, 0.02), rgba(139, 92, 246, 0.045));
  overflow: hidden;
}
.spotlight-bg-decor {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}
.spotlight-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: spotlightFloat 14s ease-in-out infinite;
}
.spotlight-orb--a {
  width: 340px;
  height: 340px;
  top: -80px;
  left: -80px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.55), transparent 70%);
}
.spotlight-orb--b {
  width: 420px;
  height: 420px;
  bottom: -140px;
  right: -100px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.45), transparent 70%);
  animation-delay: -6s;
}
@keyframes spotlightFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -20px) scale(1.08); }
}
.about-spotlight .container { position: relative; z-index: 1; }

.spotlight-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.spotlight-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(139, 92, 246, 0.1);
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  padding: 0.4rem 0.9rem;
  border: 1px solid rgba(139, 92, 246, 0.22);
  border-radius: 999px;
  margin-bottom: 1.25rem;
  backdrop-filter: blur(6px);
}
.spotlight-badge__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 0 rgba(139, 92, 246, 0.6);
  animation: spotlightPulse 2s ease-out infinite;
}
@keyframes spotlightPulse {
  0% { box-shadow: 0 0 0 0 rgba(139, 92, 246, 0.55); }
  70% { box-shadow: 0 0 0 10px rgba(139, 92, 246, 0); }
  100% { box-shadow: 0 0 0 0 rgba(139, 92, 246, 0); }
}
.spotlight-content h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 1.25rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.spotlight-title-accent {
  background: linear-gradient(135deg, #8b5cf6 0%, #3b82f6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.spotlight-content p {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}
.spotlight-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.spotlight-list li {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}
.spotlight-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(139, 92, 246, 0.2));
  color: var(--color-success, #10b981);
  font-weight: 800;
  font-size: 0.75rem;
  flex-shrink: 0;
  border: 1px solid rgba(16, 185, 129, 0.25);
}
.spotlight-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.spotlight-cta:hover .spotlight-cta__arrow { transform: translateX(4px); }
.spotlight-cta__arrow {
  display: inline-block;
  transition: transform 0.2s ease;
}

/* Demo card — glassy terminal-like */
.spotlight-demo {
  position: relative;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.85), rgba(255, 255, 255, 0.65));
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(139, 92, 246, 0.18);
  border-radius: 20px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.55rem;
  box-shadow:
    0 20px 50px -15px rgba(139, 92, 246, 0.25),
    0 8px 20px -8px rgba(59, 130, 246, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
}
[data-theme="dark"] .spotlight-demo,
.dark .spotlight-demo {
  background: linear-gradient(180deg, rgba(30, 30, 45, 0.7), rgba(20, 20, 35, 0.55));
  border-color: rgba(139, 92, 246, 0.28);
  box-shadow:
    0 20px 50px -15px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.spotlight-demo::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 20px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.4), transparent 50%, rgba(59, 130, 246, 0.3));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.spotlight-demo__header {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0 0.25rem 0.75rem;
  border-bottom: 1px dashed var(--color-border);
  margin-bottom: 0.5rem;
}
.spotlight-demo__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(139, 92, 246, 0.3);
}
.spotlight-demo__dot:nth-child(1) { background: #ef4444; }
.spotlight-demo__dot:nth-child(2) { background: #f59e0b; }
.spotlight-demo__dot:nth-child(3) { background: #10b981; }
.spotlight-demo__label {
  margin-inline-start: auto;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.spotlight-demo-step {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  background: rgba(139, 92, 246, 0.05);
  border: 1px solid rgba(139, 92, 246, 0.14);
  border-radius: 12px;
  padding: 0.95rem 1.1rem;
  width: 100%;
  font-size: 0.92rem;
  color: var(--color-text-primary);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease, background 0.25s ease;
  opacity: 0;
  transform: translateY(8px);
  animation: spotlightStepIn 0.6s ease forwards;
  animation-delay: var(--step-delay, 0s);
}
@keyframes spotlightStepIn {
  to { opacity: 1; transform: translateY(0); }
}
.spotlight-demo-step:hover {
  transform: translateY(-2px);
  border-color: rgba(139, 92, 246, 0.35);
  background: rgba(139, 92, 246, 0.09);
  box-shadow: 0 8px 20px -10px rgba(139, 92, 246, 0.3);
}
.spotlight-demo-step--result {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.12), rgba(59, 130, 246, 0.1));
  border-color: rgba(139, 92, 246, 0.3);
}
.spotlight-demo-step__body {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  flex: 1;
  min-width: 0;
}
.spotlight-demo-step__title {
  font-weight: 600;
  color: var(--color-text-primary);
  font-size: 0.92rem;
}
.spotlight-demo-step__desc {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}
.spotlight-demo-step__icon {
  color: var(--color-primary);
  flex-shrink: 0;
  opacity: 0.75;
}
.demo-step-num {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, #8b5cf6, #3b82f6);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 800;
  flex-shrink: 0;
  box-shadow: 0 4px 12px -2px rgba(139, 92, 246, 0.5);
}
.spotlight-demo-arrow {
  display: flex;
  justify-content: center;
  color: var(--color-primary);
  opacity: 0.5;
  animation: spotlightArrow 2s ease-in-out infinite;
}
@keyframes spotlightArrow {
  0%, 100% { transform: translateY(0); opacity: 0.35; }
  50% { transform: translateY(3px); opacity: 0.8; }
}
@media (max-width: 768px) {
  .about-spotlight { padding: 4rem 0; }
  .spotlight-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .spotlight-content h2 { font-size: 1.75rem; }
}
@media (prefers-reduced-motion: reduce) {
  .spotlight-orb,
  .spotlight-badge__dot,
  .spotlight-demo-step,
  .spotlight-demo-arrow { animation: none !important; }
  .spotlight-demo-step { opacity: 1; transform: none; }
}

/* ---- Transparency intro ---- */
.transparency-intro {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

/* ---- Transparency ---- */
.about-transparency {
  padding: 3rem 0;
  border-top: 1px solid var(--color-border);
}
.transparency-content {
  max-width: 600px;
  margin: 0 auto;
}
.transparency-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 1.25rem;
  text-align: center;
}
.transparency-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.transparency-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 0.875rem 1rem;
}

/* ---- CTA ---- */
.about-cta {
  padding: 4rem 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
  background: linear-gradient(135deg, rgba(139,92,246,0.06), transparent);
}
.about-cta h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 0.75rem;
}
.about-cta p {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.75rem;
}
.about-cta-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
/* Contextual cross-links (internal linking) — small, muted, below the CTAs. */
.about-cta__more {
  margin-top: 1.5rem;
  margin-bottom: 0;
  font-size: 0.9rem;
  display: flex;
  gap: 0.6rem;
  justify-content: center;
}
.about-cta__more a { color: var(--color-text-secondary); }
.about-cta__more a:hover { color: var(--color-primary); }
.about-cta__more span { color: var(--color-text-muted); }
.btn-lg {
  padding: 0.75rem 1.75rem;
  font-size: 1rem;
}

/* text-center helper */
.text-center { text-align: center; }

/* Light mode */
[data-theme="light"] .diff-item,
[data-theme="light"] .stat-card,
[data-theme="light"] .stack-item,
[data-theme="light"] .source-card,
[data-theme="light"] .usecase-card,
[data-theme="light"] .spotlight-demo,
[data-theme="light"] .transparency-list li {
  background: #fff;
  border-color: #e5e7eb;
}
[data-theme="light"] .about-stats,
[data-theme="light"] .about-spotlight {
  background: #f9fafb;
}

/* Responsive */
@media (max-width: 1024px) {
  .stack-grid { grid-template-columns: repeat(3, 1fr); }
  .usecases-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .about-mission-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
  .sources-grid { grid-template-columns: repeat(2, 1fr); }
  .usecases-grid { grid-template-columns: repeat(2, 1fr); }
  .spotlight-grid { grid-template-columns: 1fr; }
}
@media (max-width: 580px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stack-grid { grid-template-columns: 1fr 1fr; }
  .sources-grid { grid-template-columns: 1fr 1fr; }
  .usecases-grid { grid-template-columns: 1fr; }
  .usecase-card { flex-direction: column; gap: 0.75rem; }
  .about-hero { padding: 2rem 0; min-height: calc(100svh - 60px); }
}

/* ================================================================
   Vision section — Helen Keller
   ================================================================ */
.about-vision {
  padding: 6rem 0;
  border-top: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.about-vision::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 70% at 15% 50%, rgba(139,92,246,0.07), transparent 65%);
  pointer-events: none;
}

.vision-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 860px) {
  .vision-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

/* ---- Portrait ---- */
.vision-portrait-wrap {
  position: relative;
  display: flex;
  justify-content: center;
}

.vision-portrait-glow {
  position: absolute;
  inset: -24px;
  border-radius: 24px;
  background: radial-gradient(ellipse 80% 80% at 50% 50%, rgba(139,92,246,0.18), transparent 70%);
  pointer-events: none;
  animation: vision-glow-pulse 4s ease-in-out infinite;
}

@keyframes vision-glow-pulse {
  0%, 100% { opacity: 0.6; }
  50%       { opacity: 1; }
}

.vision-portrait-frame {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid rgba(139,92,246,0.3);
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.06),
    0 20px 60px rgba(0,0,0,0.4);
  max-width: 280px;
  width: 100%;
}

.vision-portrait {
  display: block;
  width: 100%;
  height: auto;
  filter: sepia(20%) contrast(1.05);
  transition: filter 0.4s;
}

.vision-portrait:hover {
  filter: sepia(0%) contrast(1.08);
}

.vision-portrait-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.25rem 1rem 1rem;
  background: linear-gradient(to top, rgba(10,10,20,0.92) 60%, transparent);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.vision-portrait-caption strong {
  font-size: 0.95rem;
  font-weight: 700;
  color: #f0f0f0;
  letter-spacing: 0.02em;
}

.vision-portrait-caption span {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
}

/* ---- Text content ---- */
.vision-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: #a78bfa;
  margin-bottom: 1.25rem;
}

.vision-heading {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-text-primary, #f0f0f0);
  margin-bottom: 1.75rem;
}

.vision-heading__accent {
  background: linear-gradient(135deg, #a78bfa 0%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.vision-body p {
  font-size: 0.97rem;
  color: var(--color-text-secondary, #8a8fa8);
  line-height: 1.8;
  margin-bottom: 1rem;
}

/* ---- Quote ---- */
.vision-quote {
  position: relative;
  margin: 1.75rem 0;
  padding: 1.5rem 1.5rem 1.5rem 2rem;
  border-inline-start: 3px solid #a78bfa;
  background: rgba(139,92,246,0.07);
  border-radius: 0 12px 12px 0;
  font-size: 1.1rem;
  font-style: italic;
  color: var(--color-text-primary, #e8e8f0);
  line-height: 1.65;
}

.vision-quote__mark {
  position: absolute;
  top: -0.5rem;
  left: 1rem;
  font-size: 4rem;
  line-height: 1;
  color: rgba(167,139,250,0.25);
  font-style: normal;
  pointer-events: none;
  user-select: none;
}

.vision-quote cite {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  font-style: normal;
  color: #a78bfa;
}

/* ================================================================
   Scroll-reveal — base states (JS adds .is-visible)
   ================================================================ */

.reveal {
  opacity: 0;
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.85s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

/* Variants — stronger transforms for bigger impact */
.reveal--up     { transform: translateY(70px); }
.reveal--left   { transform: translateX(-70px); }
.reveal--right  { transform: translateX(70px); }
.reveal--scale  { transform: scale(0.84) translateY(40px); }
.reveal--fade   { transform: none; }

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* Stagger — each child flies in one by one */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(55px) scale(0.97);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-stagger.is-visible > *:nth-child(1)  { opacity: 1; transform: none; transition-delay:   0ms; }
.reveal-stagger.is-visible > *:nth-child(2)  { opacity: 1; transform: none; transition-delay:  90ms; }
.reveal-stagger.is-visible > *:nth-child(3)  { opacity: 1; transform: none; transition-delay: 180ms; }
.reveal-stagger.is-visible > *:nth-child(4)  { opacity: 1; transform: none; transition-delay: 270ms; }
.reveal-stagger.is-visible > *:nth-child(5)  { opacity: 1; transform: none; transition-delay: 360ms; }
.reveal-stagger.is-visible > *:nth-child(6)  { opacity: 1; transform: none; transition-delay: 450ms; }
.reveal-stagger.is-visible > *:nth-child(7)  { opacity: 1; transform: none; transition-delay: 540ms; }
.reveal-stagger.is-visible > *:nth-child(8)  { opacity: 1; transform: none; transition-delay: 630ms; }

/* ================================================================
   Section Divider — animated line + bouncing scroll cue
   ================================================================ */

.section-divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem 0;
  gap: 10px;
  overflow: visible;
}

.sdiv-line {
  width: 0;
  height: 1.5px;
  background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.6), rgba(56, 189, 248, 0.5), transparent);
  border-radius: 2px;
  transition: width 1.1s cubic-bezier(0.22, 1, 0.36, 1) 0.1s;
  display: block;
}

.section-divider.is-visible .sdiv-line { width: 130px; }

.sdiv-chevron {
  color: rgba(139, 92, 246, 0.55);
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.5s ease 0.5s, transform 0.5s ease 0.5s;
  line-height: 0;
}

.section-divider.is-visible .sdiv-chevron {
  opacity: 1;
  transform: translateY(0);
}

.sdiv-chevron svg {
  display: block;
  animation: sdiv-bounce 2.4s ease-in-out infinite;
}

@keyframes sdiv-bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(7px); }
}

/* ================================================================
   Respect prefers-reduced-motion
   ================================================================ */

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal--up,
  .reveal--left,
  .reveal--right,
  .reveal--scale,
  .reveal--fade,
  .reveal-stagger > * {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .section-divider .sdiv-line   { width: 130px !important; transition: none !important; }
  .section-divider .sdiv-chevron { opacity: 1 !important; transform: none !important; transition: none !important; }
  .sdiv-chevron svg { animation: none !important; }
  .about-hero::before,
  .about-hero::after { animation: none !important; }
  .hero-scroll-hint { animation: none !important; opacity: 0.4; }
}

/* ================================================================
   Problem / Demo section
   ================================================================ */

.about-problem {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--color-border);
}

.problem-inner {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.problem-title {
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
  line-height: 1.2;
}

.problem-statement {
  font-size: 1.35rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
  font-weight: 400;
  max-width: 680px;
  margin: 0 auto 2.5rem;
}

.problem-statement em {
  color: var(--color-text-primary);
  font-style: normal;
  font-weight: 600;
}

/* Demo card */
.problem-demo {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 1.5rem;
  text-align: start;
}

.problem-demo__label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.9rem;
  background: rgba(139, 92, 246, 0.08);
  border: 1px solid rgba(139, 92, 246, 0.18);
  border-radius: 99px;
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.problem-demo__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.problem-demo__item {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 4/3;
  display: block;
  background: var(--color-border);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.problem-demo__item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.problem-demo__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.problem-demo__source {
  position: absolute;
  bottom: 0.4rem;
  right: 0.4rem;
  background: rgba(0,0,0,0.55);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  backdrop-filter: blur(4px);
}

.problem-demo__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
  padding: 0.25rem 0;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease;
}

.problem-demo__cta:hover {
  border-color: var(--color-primary);
}

@media (max-width: 640px) {
  .problem-statement { font-size: 1.1rem; }
  .problem-demo__grid { grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
  .about-problem { padding: 2.5rem 0 2rem; }
}

/* ================================================================
   Stat prefix (<)
   ================================================================ */

.stat-prefix {
  font-size: inherit;
  font-weight: inherit;
  color: var(--color-text-secondary);
  margin-inline-end: 1px;
}


/* Product screenshot inside the semantic-search explainer. */
.semantic-shot {
  margin: var(--sp-8, 2rem) auto 0;
  max-width: 900px;
}
.semantic-shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg, 12px);
  border: 1px solid var(--color-border, rgba(255, 255, 255, 0.08));
  box-shadow: var(--shadow-md, 0 16px 32px rgba(0, 0, 0, 0.18));
}
.semantic-shot figcaption {
  margin-top: var(--sp-3, 0.75rem);
  font-size: 0.875rem;
  color: var(--color-text-muted, #a1a1aa);
  text-align: center;
}