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

:root {
  --black: #0A0A0A;
  --gray: #888888;
  --border: rgba(10,10,10,0.08);
  --pad: clamp(2rem, 6vw, 6rem);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.7;
  color: var(--black);
  background: #ffffff;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  max-width: 1440px;
  margin-left: auto;
  margin-right: auto;
}

::selection { background: var(--black); color: #fff; }

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
p { font-size: 18px; }
h1, h2, h3, h4, h5, h6 { font-family: 'Inter', system-ui, sans-serif; }

/* ── ANIMATIONS ───────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(56px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-up {
  opacity: 0;
  animation: fadeUp 1.3s cubic-bezier(0.19, 1, 0.22, 1) forwards;
}
.delay-1 { animation-delay: 0.25s; }
.delay-2 { animation-delay: 0.5s; }

.reveal {
  opacity: 0;
  transform: translateY(56px);
  transition: opacity 1.3s cubic-bezier(0.19, 1, 0.22, 1),
              transform 1.3s cubic-bezier(0.19, 1, 0.22, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }

@keyframes fadeUpSm {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
  .fade-up { animation-name: fadeUpSm; animation-duration: 0.8s; }
  .delay-1 { animation-delay: 0.1s; }
  .delay-2 { animation-delay: 0.2s; }
  .reveal { transform: translateY(24px); transition-duration: 0.8s; }
}

@media (prefers-reduced-motion: reduce) {
  .fade-up { animation: none; opacity: 1; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* Touch screens keep :hover after a tap, so drop hover-only effects there */
@media (hover: none) {
  .case-block:hover .case-title { opacity: 1; }
  .case-block:hover .case-img img,
  .cs-takeaway-grid-item:hover img,
  .cs-img-grid-item:hover img { transform: none; }
}

/* ── SHARED: BACK LINK ────────────────────────── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
  padding-top: 3rem;
  padding-bottom: 0.5rem;
  transition: color 0.5s cubic-bezier(0.19, 1, 0.22, 1);
  text-decoration: none;
}
.back-link:hover { color: var(--black); }

/* ── SHARED: LABEL ────────────────────────────── */
.label {
  font-size: 14px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 1.25rem;
}

/* About page labels */
.about-wrap .label { font-size: 14px; }

/* ── SHARED: FOOTER ───────────────────────────── */
footer {
  padding: 3rem var(--pad);
  border-top: 1px solid var(--border);
  text-align: center;
}
footer p {
  font-size: 14px;
  color: var(--gray);
  letter-spacing: 0.06em;
}

/* ══════════════════════════════════════════════ */
/* HOME                                           */
/* ══════════════════════════════════════════════ */

.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  padding: 3rem var(--pad);
}

.hero-center {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 2rem;
}

.hero h1 {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 74px;
  font-weight: 600;
  line-height: normal;
  letter-spacing: -2.2px;
  max-width: 1280px;
}
.hero h1 span { display: block; color: var(--gray); }
.hero-subtitle {
  font-size: 1.25rem;
  color: var(--gray);
  line-height: 1.6;
}

.hero-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
}

.hero-left { display: flex; flex-direction: column; gap: 1rem; }

.btn-learn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 18px;
  border: none;
  padding: 0;
  cursor: pointer;
  background: none;
  font-family: inherit;
  color: var(--gray);
  width: fit-content;
  text-decoration: none;
  transition: color 0.5s cubic-bezier(0.19, 1, 0.22, 1);
}
.btn-learn:hover { color: var(--black); }

.hero-social { display: flex; gap: 1.5rem; list-style: none; }
.hero-social a {
  font-size: 14px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--black);
  position: relative;
  padding-bottom: 2px;
}
.hero-social a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--black);
  transition: width 0.6s cubic-bezier(0.19, 1, 0.22, 1);
}
.hero-social a:hover::after { width: 100%; }

.scroll-hint {
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Case list */
.cases { /* full bleed — no side padding */ }

.case-block {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 120px var(--pad) 3rem;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.case-coming-soon { cursor: default; }
.case-coming-soon:hover .case-title { opacity: 1; }
.case-coming-soon:hover .case-img img { transform: none; }
.case-coming-soon .case-img { opacity: 0.5; }

.case-text {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.case-title {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 62px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.0;
  color: var(--black);
  transition: opacity 0.5s cubic-bezier(0.19, 1, 0.22, 1);
}
.case-block:hover .case-title { opacity: 0.5; }

.case-desc {
  font-size: 24px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--black);
}

.case-meta {
  font-size: 18px;
  color: var(--gray);
}

.case-img {
  width: 100%;
  border-radius: 24px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 728px;
}

.case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform 1s cubic-bezier(0.19, 1, 0.22, 1);
}
.case-block:hover .case-img img { transform: scale(1.04); }

@media (max-width: 768px) {
  .case-title { font-size: clamp(2.5rem, 9vw, 4rem); }
  .case-img { height: auto; aspect-ratio: 12 / 7; }
  .case-block { padding-top: 64px; }
  .case-desc { font-size: 18px; }
}

/* ══════════════════════════════════════════════ */
/* ABOUT                                          */
/* ══════════════════════════════════════════════ */
.about-wrap { padding: 0 var(--pad); }

.about-hero h1 {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: clamp(1.85rem, 3.8vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.12;
  margin-top: 2.5rem;
  margin-bottom: 5rem;
}
.about-bio-wrap { display: flex; flex-direction: column; gap: 1.25rem; }

.about-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  margin-bottom: 6rem;
  align-items: start;
}
@media (max-width: 720px) {
  .about-cols { grid-template-columns: 1fr; }
}

.about-bio {
  font-size: 18px;
  line-height: 1.8;
  white-space: pre-line;
}

.about-contact { margin-top: 3rem; }
.about-contact a {
  display: block;
  font-size: 14px;
  position: relative;
  width: fit-content;
  padding-bottom: 2px;
  margin-bottom: 0.5rem;
}
.about-contact a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1px;
  background: var(--black);
  transition: width 0.6s cubic-bezier(0.19, 1, 0.22, 1);
}
.about-contact a:hover::after { width: 100%; }

.portrait img {
  width: 100%;
  object-fit: cover;
  object-position: center 30%;
  max-height: 680px;
  border-radius: 24px;
}

.about-experience {
  display: grid;
  grid-template-columns: 260px 1fr;
  column-gap: 5rem;
  align-items: start;
  padding-top: 4rem;
  margin-bottom: 5rem;
}
.about-experience .label {
  font-size: 14px;
  padding-top: 0.2rem;
}
.exp-list {
  list-style: none;
}
.exp-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}
.exp-item:first-child { border-top: none; padding-top: 0; }
.exp-company {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 18px;
  font-weight: 600;
  padding-top: 2px;
}
.exp-roles {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.exp-role-title {
  font-size: 18px;
  font-weight: 500;
  color: var(--black);
  margin-bottom: 0.2rem;
}
.exp-role-meta {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.6;
}
.about-philosophy {
  display: grid;
  grid-template-columns: 260px 1fr;
  column-gap: 5rem;
  align-items: start;
  padding-top: 4rem;
  margin-bottom: 5rem;
}
.about-philosophy p {
  font-size: 18px;
  line-height: 1.8;
}
.about-philosophy a { font-size: 18px; }

@media (max-width: 900px) {
  .about-experience { grid-template-columns: 1fr; }
  .about-philosophy { grid-template-columns: 1fr; }
  .about-experience .label { margin-bottom: 1.5rem; }
  .about-philosophy .label { margin-bottom: 1.5rem; }
  .exp-more-link { grid-column: auto; }
}
@media (max-width: 640px) {
  .exp-item { grid-template-columns: 1fr; gap: 0.75rem; }
}
@media (max-width: 480px) {
  .about-hero h1 { margin-top: 1.5rem; margin-bottom: 2.5rem; }
  .about-cols { margin-bottom: 3rem; gap: 2.5rem; }
  .about-bio { font-size: 16px; }
  .portrait img { max-height: 480px; border-radius: 24px; }
  .about-experience { padding-top: 2.5rem; margin-bottom: 3rem; }
  .about-philosophy { padding-top: 2.5rem; margin-bottom: 3rem; }
  .about-philosophy p, .about-philosophy a { font-size: 16px; }
  .exp-role-title { font-size: 16px; }
  .exp-item { padding: 1.25rem 0; }
}
.exp-more-link {
  display: inline-block;
  grid-column: 2;
  justify-self: start;
  margin-top: 2rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  color: var(--gray);
  padding: 3px 11px;
  line-height: 1.5;
  transition: color 0.4s cubic-bezier(0.19, 1, 0.22, 1),
              border-color 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}
.exp-more-link:hover { color: var(--black); border-color: rgba(10,10,10,0.3); }
@media (max-width: 900px) {
  .exp-more-link { grid-column: auto; }
}

.about-contact-links { display: flex; flex-direction: column; gap: 24px; }

.contact-email-row {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.copy-email-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-family: inherit;
  font-size: 13px;
  color: var(--gray);
  padding: 3px 11px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: color 0.4s cubic-bezier(0.19, 1, 0.22, 1),
              border-color 0.4s cubic-bezier(0.19, 1, 0.22, 1);
  line-height: 1.5;
  white-space: nowrap;
}

.copy-email-btn:hover { color: var(--black); border-color: rgba(10,10,10,0.3); }
.copy-email-btn.copied { color: var(--black); border-color: var(--black); }

.testimonial-list { list-style: none; }

.testimonial-item {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}
.testimonial-item:first-child { border-top: none; padding-top: 0; }

.testimonial-quote {
  font-size: 18px;
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 1.25rem;
  color: var(--black);
}

.testimonial-author {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.testimonial-role {
  font-size: 16px;
  color: var(--gray);
  line-height: 1.6;
}

.testimonial-attribution {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--border);
}

/* ══════════════════════════════════════════════ */
/* CASE STUDY PAGE                                */
/* ══════════════════════════════════════════════ */
.cs-wrap { padding: 0 var(--pad); }

.cs-hero { margin-top: 2rem; margin-bottom: 2.5rem; }

.cs-hero h1 {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 56px;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.08;
  margin-bottom: 2rem;
}

.cs-info {
  display: flex;
  gap: 3rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 0;
  margin-bottom: 2.5rem;
}
.cs-info-item { display: flex; flex-direction: column; gap: 0.3rem; }
.cs-info-label {
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
}
.cs-info-value {
  font-size: 14px;
  color: var(--black);
}

.cs-intro {
  font-size: 18px;
  line-height: 1.75;
  color: var(--gray);
  max-width: 680px;
  margin-bottom: 3.5rem;
}

/* Image grid — first spans full width */
.cs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 5rem;
}
@media (max-width: 560px) {
  .cs-grid { grid-template-columns: 1fr; }
}
.cs-grid-img {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: #f0f0f0;
  border-radius: 24px;
}
.cs-grid-img:first-child {
  grid-column: span 2;
  aspect-ratio: 16/9;
}
@media (max-width: 560px) {
  .cs-grid-img:first-child { grid-column: span 1; aspect-ratio: 4/3; }
}
.cs-grid-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(0.85);
  transition: filter 0.6s cubic-bezier(0.19, 1, 0.22, 1);
}
.cs-grid-img:hover img { filter: saturate(1); }

/* Challenge / Approach / Outcome */
.cs-sections { margin-bottom: 4rem; }
.cs-section {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 3rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}
.cs-section:last-child { border-bottom: 1px solid var(--border); }
.cs-section-title {
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
  padding-top: 0.2rem;
}
.cs-section-body {
  font-size: 14px;
  line-height: 1.8;
  color: var(--black);
  max-width: 620px;
}
@media (max-width: 640px) {
  .cs-section { grid-template-columns: 1fr; gap: 0.75rem; }
}

/* Prev / Next navigation */
.cs-nav {
  border-top: 1px solid var(--border);
  padding: 0;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 2rem;
}
.cs-nav-item {
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  text-decoration: none;
  color: inherit;
  padding: 3rem var(--pad);
  transition: background 0.5s cubic-bezier(0.19, 1, 0.22, 1), color 0.5s cubic-bezier(0.19, 1, 0.22, 1);
}
.cs-nav-item.cs-nav-next { text-align: right; }
.cs-nav-item:hover { background: var(--black); color: #fff; }
.cs-nav-item:hover .cs-nav-label { color: rgba(255,255,255,0.5); }
.cs-nav-label {
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
}
.cs-nav-title {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  transition: opacity 0.5s cubic-bezier(0.19, 1, 0.22, 1);
}

/* ── RESPONSIVE ────────────────────────────────── */
@media (max-width: 600px) {
  .hero h1 { font-size: 2.2rem; }
  .hero-bottom { flex-direction: column; align-items: flex-start; }
}

/* ── SCROLL REVEAL JS ─────────────────────────── */

/* ══════════════════════════════════════════════ */
/* CASE STUDY — RICH LAYOUT                       */
/* ══════════════════════════════════════════════ */

/* Full-bleed hero image */
.cs-hero-img {
  width: 100%;
  aspect-ratio: 16/7;
  overflow: hidden;
  background: #111;
  margin-bottom: 4rem;
  border-radius: 24px;
}
.cs-hero-img img:not([style*="position: absolute"]) {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.92;
}

/* Title block */
.cs-title-block {
  padding: 0 var(--pad);
  margin-bottom: 3rem;
}
.cs-client-label {
  display: block;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 1rem;
}
.cs-title-block h1 {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 62px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.0;
  margin-bottom: 2rem;
}

/* Info strip */
.cs-info {
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
  padding: 1.25rem 0;
  margin-bottom: 0;
}
.cs-info-item { display: flex; flex-direction: column; gap: 0.3rem; }
.cs-info-label {
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
}
.cs-info-value { font-size: 14px; color: var(--black); }

/* Stats strip */
.cs-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0;
  padding: 0 var(--pad);
  margin-bottom: 5rem;
}
.cs-stat {
  padding: 3rem 0;
  padding-right: 3rem;
  padding-left: 0;
}
.cs-stat:not(:first-child) { padding-left: 3rem; }
.cs-stat-number {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.5rem;
  color: var(--black);
}
.cs-stat-label {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.5;
  max-width: 180px;
}
@media (max-width: 640px) {
  .cs-stats { grid-template-columns: 1fr; }
  .cs-stat { padding: 2rem 0; padding-left: 0 !important; }
}

/* Overview — 2-col: label left, text right */
.cs-overview {
  display: grid;
  grid-template-columns: 260px 1fr;
  column-gap: 5rem;
  align-items: start;
  padding: 5rem var(--pad);
}
.cs-overview-label {
  display: block;
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
  padding-top: 0.2rem;
}
.cs-overview-text {
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.65;
  color: var(--black);
}

/* Deliverables — 2-col: label left, list right */
.cs-deliverables {
  display: grid;
  grid-template-columns: 260px 1fr;
  column-gap: 5rem;
  align-items: start;
  padding: 4rem var(--pad);
}
.cs-deliverables-label {
  display: block;
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
  padding-top: 0.2rem;
}
.cs-deliverables ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
}
.cs-deliverables p {
  font-size: 22px;
  line-height: 1.6;
  color: var(--black);
}
.cs-deliverables li {
  font-size: 22px;
  padding: 0.9rem 2rem 0.9rem 0;
  color: var(--black);
  line-height: 1.5;
}
@media (max-width: 900px) {
  .cs-overview { grid-template-columns: 1fr; }
  .cs-deliverables { grid-template-columns: 1fr; }
  .cs-overview-label { margin-bottom: 1rem; }
  .cs-deliverables-label { margin-bottom: 1.5rem; }
}
@media (max-width: 640px) {
  .cs-deliverables ul { grid-template-columns: 1fr; }
}

/* ── TAKEAWAYS (work.co editorial style) ──────── */
.cs-takeaways {
  margin-bottom: 5rem;
}

.cs-takeaway {
  display: grid;
  grid-template-columns: 260px 1fr;
  column-gap: 5rem;
  align-items: start;
  padding: 5rem var(--pad);
}

.cs-takeaway-left {
  position: sticky;
  top: 4rem;
}

.cs-takeaway-right {
  min-width: 0;
}

.cs-takeaway-num {
  display: block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 1.25rem;
}

.cs-takeaway-title {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: clamp(1.75rem, 2.2vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--black);
  margin-top: 0.5rem;
}

.cs-subs {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.cs-sub {
  padding: 2.5rem 0;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3rem;
  align-items: start;
}

.cs-sub-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--black);
  line-height: 1.4;
  padding-top: 0.15rem;
}

.cs-sub-text {
  font-size: 18px;
  line-height: 1.75;
  color: var(--gray);
}

/* User feedback cards */
.cs-feedback-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 3rem;
}

.cs-feedback-card {
  background: #f5f5f5;
  border: none;
  border-radius: 1rem;
  padding: 1.75rem;
  font-size: 17px;
  font-style: italic;
  line-height: 1.65;
  color: var(--black);
}

/* Wide image inside a takeaway */
.cs-takeaway-img {
  width: 100%;
  aspect-ratio: 16/7;
  overflow: hidden;
  border-radius: 24px;
  margin-top: 3.5rem;
  background: #f0f0f0;
}
.cs-takeaway-img.tall {
  aspect-ratio: 4/3;
}
.cs-takeaway-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
}

/* Portrait grid inside a takeaway */
.cs-takeaway-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 3.5rem;
}
.cs-takeaway-grid-item {
  aspect-ratio: 3/4;
  overflow: hidden;
  border-radius: 24px;
  background: #f0f0f0;
}
.cs-takeaway-grid-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform 1s cubic-bezier(0.19, 1, 0.22, 1);
}
.cs-takeaway-grid-item:hover img { transform: scale(1.03); }

@media (max-width: 900px) {
  .cs-takeaway { grid-template-columns: 1fr; }
  .cs-takeaway-left { position: static; }
  .cs-takeaway-title { margin-bottom: 2rem; }
}
@media (max-width: 720px) {
  .cs-sub { grid-template-columns: 1fr; gap: 0.5rem; }
  .cs-takeaway-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .cs-takeaway-grid { grid-template-columns: 1fr; }
}

/* Pull quote */
.cs-quote {
  background: #fff;
  border: 1px solid rgba(10,10,10,0.12);
  padding: clamp(4rem, 10vw, 7rem) var(--pad);
  margin: 0 var(--pad) clamp(3rem, 6vw, 5rem);
  text-align: center;
  border-radius: 2rem;
}
.cs-quote blockquote {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.3;
  max-width: 900px;
  color: var(--black);
  margin: 0 auto 1.5rem;
}
.cs-quote cite {
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
  font-style: normal;
}

/* Image grid (2-up) */
.cs-img-grid {
  padding: 0 var(--pad);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 5rem;
}
.cs-img-grid-item {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: #f0f0f0;
  border-radius: 24px;
}
.cs-img-grid-item.tall { aspect-ratio: 3/4; }
.cs-img-grid-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s cubic-bezier(0.19, 1, 0.22, 1); }
.cs-img-grid-item:hover img { transform: scale(1.03); }

/* 3-column image grid variant */
.cs-img-grid-3 {
  padding: 0 var(--pad);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 5rem;
}
.cs-img-grid-3 .cs-img-grid-item {
  aspect-ratio: 3/4;
}

@media (max-width: 768px) {
  .cs-img-grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .cs-img-grid { grid-template-columns: 1fr; }
  .cs-img-grid-3 { grid-template-columns: 1fr; }
  .cs-img-grid-item.tall { aspect-ratio: 4/3; }
}

/* Prev/Next nav */
.cs-nav {
  border-top: 1px solid var(--border);
  padding: 0;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 2rem;
}
.cs-nav-item {
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  text-decoration: none;
  color: inherit;
  padding: 3rem var(--pad);
  transition: background 0.5s cubic-bezier(0.19, 1, 0.22, 1), color 0.5s cubic-bezier(0.19, 1, 0.22, 1);
}
.cs-nav-item.cs-nav-next { text-align: right; }
.cs-nav-item:hover { background: var(--black); color: #fff; }
.cs-nav-item:hover .cs-nav-label { color: rgba(255,255,255,0.5); }
.cs-nav-label {
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray);
}
.cs-nav-title {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  transition: none;
}

/* Process phases grid */
.cs-process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border);
  margin-bottom: 3rem;
}
.cs-phase {
  padding: 1.5rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cs-phase:nth-child(3n) { border-right: none; }
.cs-phase:nth-child(n+4) { border-bottom: none; }
.cs-phase-num {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 0.4rem;
}
.cs-phase-title { font-weight: 500; font-size: 16px; margin-bottom: 0.6rem; }
.cs-phase-text { font-size: 13px; color: var(--gray); line-height: 1.6; }

/* Design principles chips */
.cs-principles-row { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 2rem; }
.cs-principle { background: var(--black); color: #fff; padding: 0.5rem 1rem; font-size: 14px; }

/* Research findings grid */
.cs-research-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border: 1px solid var(--border);
}
.cs-research-item {
  padding: 1.5rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cs-research-item:nth-child(2n) { border-right: none; }
.cs-research-item:nth-child(n+3) { border-bottom: none; }
.cs-research-title {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 0.75rem;
}
.cs-research-text { font-size: 14px; line-height: 1.65; }

/* Numbered findings list */
.cs-findings { margin-top: 2rem; }

.cs-finding {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  align-items: start;
}
.cs-finding:last-child { border-bottom: 1px solid var(--border); }

.cs-finding-num {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gray);
  padding-top: 0.25rem;
}
.cs-finding-title {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: 0.5rem;
  color: var(--black);
}
.cs-finding-text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--gray);
}

@media (max-width: 640px) {
  .cs-finding { grid-template-columns: 1.75rem 1fr; gap: 1rem; }
}

.cs-results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem 3rem;
}

.cs-results-grid .cs-stat { padding: 0; }

@media (max-width: 560px) {
  .cs-results-grid { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 768px) {
  .cs-process-grid { grid-template-columns: repeat(2, 1fr); }
  .cs-research-grid { grid-template-columns: 1fr; }
  .cs-research-item { border-right: none; }
  .cs-research-item:nth-child(n+3) { border-bottom: 1px solid var(--border); }
  .cs-research-item:last-child { border-bottom: none; }
}

/* Case study disclaimer */
.cs-disclaimer {
  padding: 0 var(--pad) 3rem;
  font-size: 14px;
  color: var(--gray);
  font-style: italic;
}

/* Projected / Target stat badge */
.cs-stat-tag {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 100px;
  margin-bottom: 0.5rem;
}

/* CTA block */
.cs-cta {
  background: var(--black);
  padding: 7rem var(--pad);
  text-align: center;
  border-radius: 2rem;
  margin: 0 var(--pad) clamp(3rem, 6vw, 5rem);
}
.cs-cta-label {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 1.25rem;
}
.cs-cta-title {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: clamp(1.75rem, 3.5vw, 3rem);
  color: #fff;
  line-height: 1.25;
  max-width: 900px;
  margin: 0 auto 2.5rem;
  font-weight: 600;
}
.cs-cta-btn {
  display: inline-block;
  background: #fff;
  color: var(--black);
  padding: 0.9rem 2.25rem;
  border-radius: 100px;
  font-size: 16px;
  font-weight: 400;
  text-decoration: none;
  transition: opacity 0.2s;
}
.cs-cta-btn:hover { opacity: 0.75; }

/* Lightbox zoom button */
.cs-takeaway-img,
.cs-hero-img {
  position: relative;
}
.lb-zoom-btn {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  background: rgba(0, 0, 0, 0.45);
  border: none;
  border-radius: 6px;
  color: #fff;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.18s, background 0.18s;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 2;
}
.cs-takeaway-img:hover .lb-zoom-btn,
.cs-hero-img:hover .lb-zoom-btn {
  opacity: 1;
}
.lb-zoom-btn:hover {
  background: rgba(0, 0, 0, 0.72);
}

/* Lightbox */
#lb {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
}
#lb.lb-active { display: flex; }
#lb-img {
  max-width: 92vw;
  max-height: 92vh;
  object-fit: contain;
  border-radius: 8px;
  cursor: default;
}
#lb-close {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.15s;
}
#lb-close:hover { opacity: 1; }

/* ══════════════════════════════════════════════ */
/* MOBILE — ≤600px                                */
/* ══════════════════════════════════════════════ */
@media (max-width: 600px) {

  /* ── CASE STUDY: TITLE ── */
  .cs-title-block h1 {
    font-size: clamp(1.75rem, 8vw, 2.5rem);
    line-height: 1.05;
    margin-bottom: 1.5rem;
  }
  .cs-info { gap: 1rem 1.75rem; }

  /* ── HERO IMAGE ── */
  .cs-hero-img {
    width: auto;
    height: auto !important;
    aspect-ratio: unset !important;
    border-radius: 24px;
    margin: 0 var(--pad) 2rem;
  }
  .cs-hero-img img { height: auto !important; }
  .cs-hero-img:not(:has(img)) { aspect-ratio: 16 / 9 !important; }

  /* ── GLOBAL TEXT ── */
  p { font-size: 16px; }

  /* ── STATS ── */
  .cs-stats { margin-bottom: 2.5rem; }

  /* ── OVERVIEW ── */
  .cs-overview { padding: 2.5rem var(--pad); }
  .cs-overview-text { font-size: 16px; }

  /* ── DELIVERABLES ── */
  .cs-deliverables { padding: 2.5rem var(--pad); }
  .cs-deliverables li,
  .cs-deliverables p { font-size: 16px; }

  /* ── TAKEAWAYS ── */
  .cs-takeaways { margin-bottom: 2rem; }
  .cs-takeaway { padding: 2.5rem var(--pad); }
  .cs-takeaway-title {
    font-size: clamp(1.5rem, 6vw, 2rem);
    margin-bottom: 0.75rem;
  }

  /* ── SUB ITEMS ── */
  .cs-sub { padding: 1.5rem 0; }
  .cs-sub-text { font-size: 16px; }

  /* ── IMAGES INSIDE TAKEAWAYS ── */
  .cs-takeaway-img {
    margin-top: 1.5rem;
    border-radius: 24px;
  }

  /* ── QUOTE CARD ── */
  .cs-quote {
    border-radius: 1.25rem;
    margin: 0 1rem clamp(2rem, 5vw, 3rem);
  }

  /* ── CTA CARD ── */
  .cs-cta {
    padding: 3.5rem var(--pad);
    border-radius: 1.25rem;
    margin: 0 1rem clamp(2rem, 5vw, 3rem);
  }
  .cs-cta-title { font-size: clamp(1.2rem, 4.5vw, 1.6rem); }

  /* ── PREV/NEXT NAV ── */
  .cs-nav { flex-direction: column; gap: 0; }
  .cs-nav-item { padding: 1.75rem var(--pad); }
  .cs-nav-item:not(:last-child) { border-bottom: 1px solid var(--border); }
  .cs-nav-item.cs-nav-next { text-align: left; }
  .cs-feedback-grid { grid-template-columns: 1fr; }

  /* ── HOME HERO ── */
  .hero-subtitle { font-size: 1rem; }
  .btn-learn { font-size: 16px; }
}