/* ═══════════════════════════════════════════════════════════════
   TOKENS
═══════════════════════════════════════════════════════════════ */
:root {
  --color-bg: #ffffff;
  --color-ink: rgb(0, 23, 55);
  --color-ink-75: rgba(0, 23, 55, 0.75);
  --color-ink-50: rgba(0, 23, 55, 0.5);
  --color-ink-40: rgba(0, 23, 55, 0.4);
  --color-ink-20: rgba(0, 23, 55, 0.2);
  --color-ink-15: rgba(0, 23, 55, 0.15);
  --color-ink-06: rgba(0, 23, 55, 0.06);
  --color-accent: rgb(0, 81, 255);
  --color-surface-solid: #ffffff;
  --color-border: rgba(0, 23, 55, 0.05);
  --color-hover: rgba(0, 23, 55, 0.02);

  --font-sans: 'Graphik', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --content-width: 700px;
  --side-pad: 24px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: rgb(13, 14, 20);
    --color-ink: rgb(232, 236, 245);
    --color-ink-75: rgba(232, 236, 245, 0.75);
    --color-ink-50: rgba(232, 236, 245, 0.5);
    --color-ink-40: rgba(232, 236, 245, 0.4);
    --color-ink-20: rgba(232, 236, 245, 0.2);
    --color-ink-15: rgba(232, 236, 245, 0.15);
    --color-ink-06: rgba(232, 236, 245, 0.06);
    --color-accent: rgb(76, 130, 255);
    --color-surface-solid: rgb(30, 32, 42);
    --color-border: rgba(232, 236, 245, 0.05);
    --color-hover: rgba(232, 236, 245, 0.02);
  }
}

/* ═══════════════════════════════════════════════════════════════
   RESET
═══════════════════════════════════════════════════════════════ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  touch-action: manipulation;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

body {
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.6;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ═══════════════════════════════════════════════════════════════
   LAYOUT
═══════════════════════════════════════════════════════════════ */
.section-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}


/* ═══════════════════════════════════════════════════════════════
   SITE HEADER
═══════════════════════════════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 8px;
  z-index: 100;
  margin-top: 8px;
  padding: 0 var(--side-pad);
}

.site-header__inner {
  max-width: calc(var(--content-width) - 2 * var(--side-pad) + 32px);
  margin: 0 auto;
  padding: 0 16px;
  height: 48px;
  border-radius: 10px;
  position: relative;
  backdrop-filter: blur(24px) saturate(160%) brightness(1.12);
  -webkit-backdrop-filter: blur(24px) saturate(160%) brightness(1.12);
  transform: translateZ(0);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header__inner::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(0,0,0,0.05), rgba(0,0,0,0.01));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.site-header__inner.scrolled::before {
  opacity: 1;
}

@media (prefers-color-scheme: dark) {
  .site-header__inner::before {
    background: linear-gradient(135deg, rgba(255,255,255,0.1), rgba(255,255,255,0.02));
  }
}

/* Specular highlight — top-left glint gives the liquid/glass meniscus feel */

.site-header__name {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  text-decoration: none;
  position: relative;
  z-index: 1;
}

.site-header__avatar {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
}

.site-header__role {
  font-weight: 400;
  color: var(--color-ink-50);
  margin-left: 4px;
  transition: color 0.3s ease;
}

.site-header__name-text {
  display: inline-flex;
  align-items: center;
  color: var(--color-ink);
  transition: color 0.3s ease;
}

.site-header__name-clip {
  display: inline-block;
  max-width: 0;
  overflow: hidden;
  transition: max-width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-header__name-rest {
  display: inline;
  white-space: nowrap;
}

.site-header__name:hover .site-header__name-clip {
  max-width: 120px;
}

.site-header__nav {
  display: flex;
  gap: 24px;
  position: relative;
  z-index: 1;
}

.site-header__link {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-ink-50);
  text-decoration: none;
  position: relative;
  z-index: 1;
  transition: color 0.15s ease;
}

.site-header__link--active {
  color: var(--color-ink);
}

.site-header__link:hover {
  color: var(--color-ink);
}

/* nav over dark background */
.site-header--over-dark .site-header__name-text,
.site-header--over-dark .site-header__role,
.site-header--over-dark .site-header__link,
.site-header--over-dark .site-header__hamburger {
  color: rgba(255, 255, 255, 0.7);
}
.site-header--over-dark .site-header__link--active,
.site-header--over-dark .site-header__link:hover {
  color: rgba(255, 255, 255, 1);
}


/* dark mode: nav over light image → force dark text */
@media (prefers-color-scheme: dark) {
  .site-header--over-light .site-header__name-text,
  .site-header--over-light .site-header__role,
  .site-header--over-light .site-header__link,
  .site-header--over-light .site-header__hamburger {
    color: rgba(0, 23, 55, 0.7);
  }
  .site-header--over-light .site-header__link--active,
  .site-header--over-light .site-header__link:hover {
    color: rgb(0, 23, 55);
  }
}

/* Hamburger button (hidden on desktop) */
.site-header__hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--color-ink);
  position: relative;
  z-index: 1;
  line-height: 0;
  transition: color 0.15s ease;
}

.site-header__close-icon {
  display: none;
}
.site-header.is-open .site-header__hamburger-icon {
  display: none;
}
.site-header.is-open .site-header__close-icon {
  display: block;
}

/* Mobile dropdown menu (hidden on desktop) */
.site-header__mobile-menu {
  display: none;
  flex-direction: column;
  border-radius: 10px;
  backdrop-filter: blur(24px) saturate(160%) brightness(1.12);
  -webkit-backdrop-filter: blur(24px) saturate(160%) brightness(1.12);
  transform: translateZ(0);
}


.site-header__mobile-menu .site-header__link {
  display: block;
  padding: 14px var(--side-pad);
  font-size: 15px;
  position: relative;
  z-index: 1;
}
.site-header__mobile-menu .site-header__link:not(:last-child)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--side-pad);
  right: var(--side-pad);
  height: 1px;
  background: var(--color-ink-06);
}

/* ═══════════════════════════════════════════════════════════════
   SECTIONS
═══════════════════════════════════════════════════════════════ */
.section {
  padding: 150px 0;
}

/* ═══════════════════════════════════════════════════════════════
   HERO
═══════════════════════════════════════════════════════════════ */
.hero__headline {
  font-family: var(--font-sans);
  font-size: 32px;
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.hero__muted {
  color: var(--color-ink-50);
}

/* ═══════════════════════════════════════════════════════════════
   SOCIAL LINKS
═══════════════════════════════════════════════════════════════ */
.social-link {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-ink-50);
  transition: color 0.15s ease;
}

.social-link:hover {
  color: var(--color-ink);
}

/* ═══════════════════════════════════════════════════════════════
   PROJECTS
═══════════════════════════════════════════════════════════════ */
.project__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}

.project__favicon {
  width: 20px;
  height: 20px;
  border-radius: 6px;
  flex-shrink: 0;
}

.project__company {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  line-height: 16px;
}

.project__acquired {
  font-size: 13px;
  font-weight: 400;
  color: var(--color-ink-50);
}

.project__period {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-ink-50);
  margin-left: auto;
}

.project__title {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--color-ink-75);
  margin-bottom: 14px;
}

.project__cta {
  display: inline-flex;
  align-items: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  transition: opacity 0.15s ease;
}

.project__cta:hover {
  opacity: 0.6;
}

.project__cta::after {
  content: '→';
  display: inline-block;
  margin-left: 4px;
  transition: transform 0.15s ease;
}

.project__cta:hover::after {
  animation: arrow-bounce 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes arrow-bounce {
  0%   { transform: translateX(0); }
  60%  { transform: translateX(4px); }
  100% { transform: translateX(2px); }
}

/* ═══════════════════════════════════════════════════════════════
   PROJECT CAROUSEL
═══════════════════════════════════════════════════════════════ */
.project__carousel {
  position: relative;
  margin-top: 32px;
  /* Break out of content column — full viewport width */
  width: 100vw;
  margin-left: calc(50% - 50vw);
}

.project__single-image {
  margin-top: 32px;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  display: flex;
  justify-content: center;
  padding: 0 20px;
}
@media (min-width: 600px) {
  .project__single-image { padding: 0 60px; }
}

.project__single-image img {
  width: 100%;
  max-width: 800px;
  height: auto;
  border-radius: 16px;
  border: 1px solid var(--color-border);
  display: block;
}

/* Award badge */
.award-badge__wrap {
  margin-top: 36px;
  text-align: center;
}

.award-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-ink-50);
  transition: color 0.15s ease;
}

.award-badge:hover,
.award-badge:hover .award-badge__laurel,
.award-badge:hover .award-badge__label,
.award-badge:hover .award-badge__name {
  color: var(--color-ink-75);
}

.award-badge__laurel {
  color: var(--color-ink-50);
  transform: rotate(15deg);
}

.award-badge__laurel--right {
  transform: scaleX(-1) rotate(15deg);
}

.award-badge__text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
}

.award-badge__label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--color-ink-50);
}

.award-badge__name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink-50);
}

.carousel__viewport {
  position: relative;
  overflow: hidden;
  touch-action: pan-y;
}

.project__carousel .carousel__track {
  gap: 16px;
}

.project__carousel .carousel__slide {
  flex-shrink: 0;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.project__carousel .carousel__slide img,
.project__carousel .carousel__slide video {
  width: 100%;
  height: auto;
  display: block;
}

.carousel__track {
  display: flex;
  cursor: grab;
  user-select: none;
}
.carousel__track img {
  -webkit-user-drag: none;
  pointer-events: none;
}
.carousel__track:active {
  cursor: grabbing;
}

.carousel__dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  padding: 16px 0 14px;
}

.carousel__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-ink-20);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background 0.2s ease;
}

.carousel__dot--active {
  background: var(--color-ink);
}

.carousel__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: white;
  color: var(--color-ink);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.15s ease;
  z-index: 2;
  box-shadow: 0 1px 4px rgba(0,0,0,0.15), 0 0 0 1px rgba(0,0,0,0.06);
}

.carousel__btn--prev { left: calc(var(--slide-offset, 60px) + 12px); }
.carousel__btn--next { right: calc(var(--slide-offset, 60px) + 12px); }

.carousel__viewport:hover .carousel__btn { opacity: 1; }

.carousel__btn:disabled {
  opacity: 0 !important;
  pointer-events: none;
}

@media (max-width: 599px) {
  .carousel__btn { display: none; }
}

/* ═══════════════════════════════════════════════════════════════
   SECTION DIVIDER
═══════════════════════════════════════════════════════════════ */
.section-divider {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}
.section-divider::after {
  content: '';
  display: block;
  border-top: 1px solid rgba(0,0,0,0.1);
}

/* ═══════════════════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════════════════ */
.footer {
  padding: 40px 0;
}

.footer__inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--side-pad);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.footer__copy {
  font-size: 14px;
  color: var(--color-ink-50);
}

.footer__links {
  display: flex;
  gap: 16px;
}

/* ═══════════════════════════════════════════════════════════════
   ABOUT PAGE
═══════════════════════════════════════════════════════════════ */

.about__intro {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--color-ink-75);
  margin-top: 16px;
}

.about__cta {
  display: inline-block;
  margin-top: 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  transition: opacity 0.15s ease;
}

.about__cta:hover {
  opacity: 0.6;
}

.section-heading {
  font-size: 24px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin-bottom: 24px;
}

.exp-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.exp-table td {
  padding: 0 8px;
  height: 40px;
  font-size: 14px;
  vertical-align: middle;
  transition: background 0.15s ease;
}

.exp-left {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-ink);
  font-weight: 400;
}

.exp-favicon {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  flex-shrink: 0;
}

.exp-favicon--border {
  border: 1px solid rgba(0, 23, 55, 0.1);
}

.exp-company-link {
  color: var(--color-ink);
  font-weight: 500;
  margin-left: 4px;
  transition: opacity 0.15s ease;
}

.exp-company-link:hover {
  opacity: 0.6;
}

.exp-company-link--static {
  pointer-events: none;
}

.exp-acquired {
  color: var(--color-ink-50);
  font-weight: 400;
}

.exp-year {
  color: var(--color-ink-50);
  font-weight: 400;
  text-align: right;
  white-space: nowrap;
}

.exp-present {
  animation: exp-present-pulse 2.4s ease-in-out infinite;
}

@keyframes exp-present-pulse {
  0%, 100% { color: var(--color-ink); }
  50% { color: var(--color-ink-20); }
}

.exp-table tr[data-detail] {
  cursor: default;
}

.exp-table tr[data-detail]:hover td {
  background: var(--color-hover);
}

.exp-table tr[data-detail]:hover td:first-child {
  border-radius: 6px 0 0 6px;
}

.exp-table tr[data-detail]:hover td:last-child {
  border-radius: 0 6px 6px 0;
}

/* ═══════════════════════════════════════════════════════════════
   EXPERIENCE TOOLTIP
═══════════════════════════════════════════════════════════════ */
.exp-tooltip {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  pointer-events: none;
  max-width: 260px;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 16px 18px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-ink-75);
  box-shadow: 0 8px 32px rgba(0, 23, 55, 0.08), 0 2px 8px rgba(0, 23, 55, 0.04);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease, visibility 0.15s ease;
  will-change: transform;
}

.exp-tooltip.is-visible {
  opacity: 1;
  visibility: visible;
}

/* ═══════════════════════════════════════════════════════════════
   ARTICLES GRID
═══════════════════════════════════════════════════════════════ */
.articles__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.article-card {
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 28px;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  text-decoration: none;
  transform-origin: center center;
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.15s ease;
  will-change: transform;
}

.article-card:hover {
  transform: rotate(1.5deg) scale(1.03);
  border-color: var(--color-ink-20);
}

.article-card:nth-child(even):hover {
  transform: rotate(-1.5deg) scale(1.03);
  border-color: var(--color-ink-20);
}

.article-card__logo {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  display: block;
  object-fit: contain;
}

.article-card__text {
  font-size: 18px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  flex: 1;
}

.article-card__year {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-ink-40);
  margin-top: auto;
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════════════ */
@media (max-width: 640px) {
  :root {
    --side-pad: 20px;
  }

  .hero__headline {
    font-size: 24px;
  }

  .section-heading {
    font-size: 18px;
  }

  .articles__grid {
    grid-template-columns: 1fr;
  }

  .article-card {
    padding: 20px;
  }


  .section {
    padding: 100px 0;
  }

  .exp-table tr {
    display: grid;
    grid-template-columns: 40px 1fr;
    column-gap: 16px;
    row-gap: 4px;
    padding: 12px 0;
    height: auto;
  }

  .exp-table td {
    display: block;
    height: auto;
    padding: 0;
  }

  /* dissolve exp-left so img + span become direct grid children */
  .exp-table td.exp-left {
    display: contents;
  }

  .exp-favicon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    grid-column: 1;
    grid-row: 1 / span 2;
    align-self: center;
  }

  .exp-role {
    grid-column: 2;
    grid-row: 1;
    font-size: 13px;
    line-height: 1.4;
    min-width: 0;
  }

  .exp-company-link {
    margin-left: 3px;
  }

  .exp-table td.exp-year {
    grid-column: 2;
    grid-row: 2;
    text-align: left;
    font-size: 12px;
    padding-left: 0;
    margin-top: 0;
  }

  .exp-table tr[data-detail]:hover td:first-child,
  .exp-table tr[data-detail]:hover td:last-child {
    border-radius: 0;
  }

  .site-header__nav {
    display: none;
  }

  .site-header__name:hover .site-header__name-clip {
    max-width: 0;
  }

  .site-header__hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .site-header__mobile-menu {
    display: flex;
    position: absolute;
    top: calc(48px + 1px);
    left: var(--side-pad);
    right: var(--side-pad);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px) scale(0.97);
    transform-origin: top center;
    transition:
      opacity 0.18s ease,
      transform 0.26s cubic-bezier(0.34, 1.56, 0.64, 1),
      visibility 0s linear 0.26s;
    pointer-events: none;
  }

  .site-header.is-open .site-header__mobile-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    transition:
      opacity 0.18s ease,
      transform 0.26s cubic-bezier(0.34, 1.56, 0.64, 1),
      visibility 0s linear 0s;
    pointer-events: auto;
  }
}

/* ═══════════════════════════════════════════════════════════════
   ANIMATIONS
═══════════════════════════════════════════════════════════════ */

/* ═══════════════════════════════════════════════════════════════
   PAGE TRANSITIONS
═══════════════════════════════════════════════════════════════ */

/* Cross-document View Transitions API (Chrome/Edge) */
@view-transition {
  navigation: auto;
}

::view-transition-old(root) {
  animation: 0.2s ease-in both vt-fade-out;
}

::view-transition-new(root) {
  animation: 0.3s cubic-bezier(0.22, 1, 0.36, 1) both vt-fade-up;
}

@keyframes vt-fade-out {
  to { opacity: 0; }
}

@keyframes vt-fade-up {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Safari fallback — fade out on exit, JS handles navigation */
body.is-leaving {
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}

/* ═══════════════════════════════════════════════════════════════
   CASE STUDY
═══════════════════════════════════════════════════════════════ */

.cs-main {
  padding: 120px 0 100px;
}

.cs-wrap {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--side-pad);
}


.cs-role {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-ink-50);
  margin-bottom: 12px;
}

.cs-title {
  font-size: 26px;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin-bottom: 40px;
}

.cs-label {
  font-size: 18px;
  font-weight: 500;
  color: var(--color-ink);
  margin-top: 56px;
  margin-bottom: 12px;
}

.cs-body {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-ink-75);
  margin-bottom: 20px;
}

.cs-list {
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-ink-75);
  margin-bottom: 20px;
  padding-left: 20px;
}

.cs-list li {
  margin-bottom: 6px;
}

/* Breakout image — wider than content column, like homepage */
.cs-img {
  width: 100vw;
  margin-left: calc(50% - 50vw);
  margin-top: 32px;
  margin-bottom: 32px;
  padding: 0 20px;
  box-sizing: border-box;
}
@media (min-width: 600px) {
  .cs-img { padding: 0 60px; }
}
.cs-img img {
  width: 100%;
  max-width: 800px;
  height: auto;
  border-radius: 16px;
  display: block;
  margin: 0 auto;
}

.cs-challenges {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 20px;
}

.cs-challenge__title {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.cs-challenge__body {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-ink-75);
}

.cs-quote {
  border-left: 2px solid var(--color-ink-20);
  padding-left: 20px;
  margin: 32px 0;
  font-size: 17px;
  line-height: 1.65;
  color: var(--color-ink-75);
}


@media (max-width: 640px) {
  .cs-main { padding: 80px 0 80px; }
  .cs-title { font-size: 22px; }
}

@media (prefers-reduced-motion: no-preference) {
  /* Scroll reveal — sections start hidden, JS adds .is-visible */
  .section--reveal {
    opacity: 0;
    transform: translateY(28px);
    transition:
      opacity  0.6s cubic-bezier(0.22, 1, 0.36, 1),
      transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  }
  .section--reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}