/* =============================================================================
   About page — pearl professional format
   Warm-white nacre surface, brand orange accent, independent of the site
   dark tokens so the institute profile reads like a company document.
   ============================================================================= */

body.ab-pearl {
  --pearl-bg: #f6f2ea;
  --pearl-bg-deep: #ebe4d8;
  --pearl-paper: #fffdf8;
  --pearl-ink: #1a1410;
  --pearl-muted: #5c534a;
  --pearl-dim: #7a7168;
  --pearl-line: rgba(70, 52, 32, 0.12);
  --pearl-line-strong: rgba(196, 90, 18, 0.35);
  --pearl-ember: #c2410c;
  --pearl-ember-2: #e07020;
  --pearl-gold: #9a6b24;
  --pearl-ok: #157a4b;
  --pearl-shadow: 0 18px 44px -28px rgba(70, 42, 12, 0.35);
  --pearl-nacre:
    linear-gradient(145deg,
      rgba(255, 255, 255, 0.94) 0%,
      rgba(255, 250, 242, 0.88) 38%,
      rgba(236, 246, 252, 0.28) 62%,
      rgba(255, 255, 255, 0.9) 100%);
  background:
    radial-gradient(1200px 520px at 12% -8%, rgba(255, 255, 255, 0.85), transparent 55%),
    radial-gradient(900px 480px at 92% 8%, rgba(232, 244, 252, 0.45), transparent 58%),
    radial-gradient(800px 420px at 50% 100%, rgba(255, 214, 170, 0.18), transparent 55%),
    var(--pearl-bg);
  color: var(--pearl-ink);
}

body.ab-pearl a:not(.btn):not(.pearl-btn):not(.footer a):not(.social-link):not(.logo) {
  color: var(--pearl-ember);
}

body.ab-pearl a:not(.btn):not(.pearl-btn):not(.footer a):not(.social-link):not(.logo):hover {
  color: #9a3308;
}

.pearl-skip {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 80;
  background: #fff;
  color: var(--pearl-ink);
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 700;
}
.pearl-skip:focus {
  left: 12px;
}

.pearl-hero {
  padding: 8.5rem 1.25rem 3.25rem;
  text-align: center;
  position: relative;
}
.pearl-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 28% 72%, rgba(255, 157, 60, 0.14) 0%, transparent 46%),
    radial-gradient(circle at 74% 22%, rgba(210, 232, 245, 0.35) 0%, transparent 48%);
  pointer-events: none;
}
.pearl-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 52rem;
  margin: 0 auto;
}
.pearl-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--pearl-gold);
  margin-bottom: 0.85rem;
}
.pearl-hero h1 {
  margin: 0;
  font-size: clamp(2rem, 5.2vw, 3.35rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--pearl-ink);
  text-wrap: balance;
}
.pearl-hero h1 .gradient-text {
  background: linear-gradient(115deg, #c45a12, #e07020 45%, #b45309);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.pearl-lead {
  color: var(--pearl-muted);
  font-size: 1.12rem;
  line-height: 1.65;
  max-width: 42rem;
  margin: 1rem auto 0;
}
.pearl-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin: 1.4rem 0 0;
}
.pearl-pill {
  padding: 0.38rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--pearl-line-strong);
  background: rgba(255, 255, 255, 0.7);
  color: var(--pearl-ember);
  font-size: 0.78rem;
  font-weight: 700;
}
.pearl-hero-btns {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.pearl-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 48px;
  padding: 0.85rem 1.45rem;
  border-radius: 14px;
  font-weight: 700;
  font-size: 0.98rem;
  text-decoration: none !important;
  border: 1px solid transparent;
  cursor: pointer;
}
.pearl-btn-primary {
  background: linear-gradient(135deg, #ff9d3c, #ff6a3d);
  color: #1a0e02 !important;
  box-shadow: 0 10px 24px rgba(255, 122, 40, 0.28);
}
.pearl-btn-primary:hover {
  transform: translateY(-2px);
}
.pearl-btn-ghost {
  background: rgba(255, 255, 255, 0.62);
  color: var(--pearl-ink) !important;
  border-color: var(--pearl-line);
}
.pearl-btn-ghost:hover {
  border-color: var(--pearl-line-strong);
}

.pearl-wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.25rem 4.5rem;
  display: flex;
  flex-direction: column;
  gap: 2.4rem;
}
.pearl-block h2 {
  margin: 0 0 0.35rem;
  font-size: clamp(1.45rem, 3vw, 1.9rem);
  letter-spacing: -0.02em;
  color: var(--pearl-ink);
}
.pearl-sub {
  margin: 0 0 1.15rem;
  color: var(--pearl-muted);
  line-height: 1.55;
}

.pearl-card {
  background: var(--pearl-nacre);
  border: 1px solid rgba(255, 255, 255, 0.72);
  box-shadow: var(--pearl-shadow), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  border-radius: 18px;
  padding: 1.35rem 1.4rem;
  text-align: left;
}
.pearl-card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.08rem;
  color: var(--pearl-ember);
}
.pearl-card p,
.pearl-card li {
  color: var(--pearl-muted);
  line-height: 1.65;
  margin: 0;
}
.pearl-card ul {
  margin: 0.55rem 0 0;
  padding-left: 1.1rem;
}
.pearl-card li {
  margin-bottom: 0.4rem;
}
.pearl-card a {
  font-weight: 650;
}

.pearl-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 720px) {
  .pearl-grid-2 { grid-template-columns: 1fr 1fr; }
  .pearl-grid-3 { grid-template-columns: repeat(3, 1fr); }
  .pearl-grid-4 { grid-template-columns: repeat(4, 1fr); }
}
@media (min-width: 720px) and (max-width: 1023px) {
  .pearl-grid-4 { grid-template-columns: 1fr 1fr; }
}

.pearl-label {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--pearl-gold);
  margin-bottom: 0.55rem;
}
.pearl-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 999px;
  background: rgba(196, 90, 18, 0.12);
  color: var(--pearl-ember);
  font-weight: 800;
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.pearl-track {
  display: block;
  text-decoration: none !important;
  color: inherit !important;
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.pearl-track:hover {
  transform: translateY(-2px);
  border-color: var(--pearl-line-strong);
}
.pearl-track strong {
  display: block;
  color: var(--pearl-ink);
  margin-bottom: 0.3rem;
}
.pearl-track span {
  color: var(--pearl-muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.pearl-facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  overflow: hidden;
}
.pearl-fact {
  display: grid;
  grid-template-columns: 9.5rem minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--pearl-line);
}
.pearl-facts .pearl-fact:first-child { border-top: 0; padding-top: 0; }
.pearl-fact dt {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--pearl-dim);
}
.pearl-fact dd {
  margin: 0;
  color: var(--pearl-ink);
  line-height: 1.5;
}

.pearl-certs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.pearl-cert {
  padding: 0.45rem 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--pearl-line);
  background: rgba(255, 255, 255, 0.55);
  font-size: 0.82rem;
  color: var(--pearl-ink);
}
.pearl-cert b { color: var(--pearl-ember); }
.pearl-cert.wip { border-style: dashed; color: var(--pearl-muted); }

.pearl-flow {
  width: 100%;
  overflow-x: auto;
}
.pearl-flow svg {
  width: 100%;
  min-width: 640px;
  height: auto;
  display: block;
}

.pearl-note {
  font-size: 0.92rem;
  color: var(--pearl-muted);
  text-align: center;
  margin: 1rem 0 0;
}

.pearl-faq details {
  border: 1px solid var(--pearl-line);
  border-radius: 14px;
  padding: 0.9rem 1.05rem;
  background: var(--pearl-nacre);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85);
}
.pearl-faq summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
  color: var(--pearl-ink);
}
.pearl-faq summary::-webkit-details-marker { display: none; }
.pearl-faq p {
  margin: 0.7rem 0 0;
  color: var(--pearl-muted);
  line-height: 1.6;
}

.pearl-cta {
  margin: 0 1.25rem 3.5rem;
  padding: 2.2rem 1.4rem;
  text-align: center;
  border-radius: 22px;
  background: var(--pearl-nacre);
  border: 1px solid rgba(255, 255, 255, 0.75);
  box-shadow: var(--pearl-shadow);
}
.pearl-cta h2 { margin: 0 0 0.5rem; }
.pearl-cta p { color: var(--pearl-muted); margin: 0 0 1.25rem; }

.pearl-tools {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
}
@media (min-width: 640px) {
  .pearl-tools { grid-template-columns: 1fr 1fr; }
}
.pearl-tool {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--pearl-line);
  background: rgba(255, 255, 255, 0.5);
  text-decoration: none !important;
  color: inherit !important;
}
.pearl-tool:hover { border-color: var(--pearl-line-strong); }
.pearl-tool b { display: block; color: var(--pearl-ink); }
.pearl-tool small { color: var(--pearl-muted); font-size: 0.82rem; }
.pearl-tool code {
  font-size: 0.72rem;
  color: var(--pearl-gold);
  font-family: ui-monospace, "Fira Code", monospace;
}

body.ab-pearl .footer-brand p { color: var(--text-secondary); }

@media (max-width: 720px) {
  /* Four step cards already carry this story; the wide SVG only adds a side-scroll. */
  .pearl-flow { display: none; }
}

@media (max-width: 390px) {
  .pearl-hero { padding-top: 7.2rem; padding-left: 0.9rem; padding-right: 0.9rem; }
  .pearl-lead { font-size: 1rem; }
  .pearl-hero-btns,
  .pearl-cta .pearl-hero-btns { flex-direction: column; align-items: stretch; }
  .pearl-hero-btns .pearl-btn { text-align: center; width: 100%; }
  .pearl-wrap { padding-left: 0.9rem; padding-right: 0.9rem; }
  .pearl-card { padding: 1.1rem 1rem; }
  .pearl-fact { grid-template-columns: 1fr; gap: 0.2rem; }
}

@media (prefers-reduced-motion: reduce) {
  .pearl-btn-primary:hover,
  .pearl-track:hover { transform: none; }
}