.approach-section {
  display: block;
  padding-top: clamp(76px, 8vw, 124px);
  padding-bottom: clamp(76px, 8vw, 124px);
}

.approach-section .process-heading {
  margin-bottom: 24px;
}

.approach-section .process-heading h2 {
  margin: 0;
  font-size: clamp(38px, 4.2vw, 66px);
  font-weight: 500;
  line-height: 1.06;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.process-card {
  --process-outline: #343434;
  --process-padding: clamp(20px, 2.2vw, 30px);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-width: 0;
  min-height: 260px;
  padding: var(--process-padding);
  border: 1px solid transparent;
  border-radius: 12px;
  background: var(--theme-bg);
  color: var(--theme-ink);
}

.process-card::before {
  position: absolute;
  inset: -1px;
  border: 1px solid var(--process-outline);
  border-radius: inherit;
  content: '';
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 35%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 35%, transparent 100%);
}

.process-card--optional {
  grid-column: span 2;
  min-height: 190px;
}

.process-card--optional::before {
  border-style: dashed;
}

.process-card-step {
  color: var(--theme-muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .16em;
  line-height: 1.4;
}

.process-card h3 {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-size: clamp(21px, 2vw, 27px);
  font-weight: 500;
  letter-spacing: -.05em;
  line-height: 1.16;
}

.process-card p {
  max-width: 36ch;
  margin: 0;
  color: var(--theme-muted);
  font-size: 13px;
  line-height: 1.55;
}

.process-card--reveal {
  overflow: hidden;
  isolation: isolate;
}

.process-card--reveal::before {
  z-index: 4;
  inset: 0;
}

.process-card-under {
  position: absolute;
  z-index: 1;
  inset: 1px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: var(--process-padding);
  border-radius: 11px;
  background-color: #0070f3;
  color: #fff;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 58%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 58%, transparent 100%);
}

.process-card-leaf {
  position: absolute;
  z-index: 3;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--process-padding);
  border-radius: inherit;
  background: var(--theme-bg);
  clip-path: polygon(0 0, calc(100% - 36px) 0, 100% 36px, 100% 100%, 0 100%);
  transition: clip-path 760ms cubic-bezier(.2, .72, .18, 1);
  will-change: clip-path;
}

.process-card-fold {
  position: absolute;
  z-index: 3;
  top: 0;
  right: 0;
  width: 36px;
  height: 36px;
  background: linear-gradient(45deg, #535353 0%, #3a3a3a 24%, #202020 41%, #151515 45%, #272727 47%, #626262 49.5%, #747474 50%);
  border-bottom-left-radius: 10px;
  clip-path: polygon(0 0, 0 100%, 100% 100%);
  pointer-events: none;
  transition: width 760ms cubic-bezier(.2, .72, .18, 1), height 760ms cubic-bezier(.2, .72, .18, 1);
}

.process-card--reveal.is-revealed .process-card-fold {
  width: 50%;
  height: 50%;
}

.process-card--reveal.is-revealed .process-card-leaf {
  clip-path: polygon(0 0, 50% 0, 100% 50%, 100% 100%, 0 100%);
}

.process-card-reveal-trigger {
  position: absolute;
  z-index: 5;
  top: 0;
  right: 0;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 0;
  border-radius: 0 12px 0 0;
  background: transparent;
  cursor: pointer;
}

.process-card--reveal.is-revealed .process-card-reveal-trigger {
  pointer-events: none;
}

.process-card-reveal-trigger:focus-visible,
.process-card-start:focus-visible {
  outline: 2px solid var(--theme-ink);
  outline-offset: -5px;
}

.process-card-start {
  position: absolute;
  top: 18px;
  right: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  padding: 9px 10px;
  border: 1px solid rgba(255, 255, 255, .8);
  border-radius: 7px;
  background: rgba(255, 255, 255, .1);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .14em;
  line-height: 1.3;
  text-transform: uppercase;
  transition: background-color 180ms ease, transform 180ms ease;
}

.process-card-start:hover { transform: translateY(-2px); }

html[data-theme="light"] .process-card-fold {
  background: linear-gradient(45deg, #c7c7c7 0%, #ababab 24%, #868686 41%, #727272 45%, #858585 47%, #c5c5c5 49.5%, #d3d3d3 50%);
}

html[data-theme="light"] .process-card { --process-outline: #bebebe; }

@media (max-width: 1000px) {
  .process-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .process-card { min-height: 224px; }
  .process-card--optional { grid-column: auto; }
}

@media (max-width: 700px) {
  .approach-section .process-heading h2 { font-size: clamp(22px, 5.8vw, 38px); }
}

@media (max-width: 600px) {
  .process-grid { grid-template-columns: 1fr; gap: 12px; }
  .process-card, .process-card--optional { min-height: 172px; }
  .process-card h3 { font-size: 24px; }
  .process-card--reveal { --mobile-peel-size: 108px; }
  .process-card--reveal.is-revealed .process-card-fold { width: var(--mobile-peel-size); height: var(--mobile-peel-size); }
  .process-card--reveal.is-revealed .process-card-leaf { clip-path: polygon(0 0, calc(100% - var(--mobile-peel-size)) 0, 100% var(--mobile-peel-size), 100% 100%, 0 100%); }
  .process-card--reveal .process-card-start { top: 12px; right: 12px; }
}

@media (max-width: 360px) {
  .process-card--reveal { min-height: 200px; }
}

@media (prefers-reduced-motion: reduce) {
  .process-card-leaf,
  .process-card-fold,
  .process-card-start { transition: none; }
  .process-card-leaf { will-change: auto; }
}