:root {
  --bg: #fff;
  --surface: #f0f0ec;
  --ink: #1a1a2e;
  --text: #4a5568;
  --muted: #9ca3af;
  --accent: #4f46e5;
  --border: #e8e8e8;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'DM Sans', sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

.case-nav {
  height: 96px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 3rem;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.case-logo img { display: block; width: auto; height: 52px; }

.case-nav-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.case-nav-links {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  list-style: none;
}

.case-nav a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  transition: color 0.25s ease;
}

.case-nav a:hover,
.case-nav a.active { color: var(--accent); }

.lang-toggle {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.lang-toggle button {
  padding: 0.38rem 0.65rem;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.lang-toggle button.active {
  color: #fff;
  background: var(--accent);
}

.case-main { padding: 4rem 3rem 0; }

.case-breadcrumb {
  max-width: 1280px;
  margin: 0 auto 2.8rem;
  display: flex;
  gap: 1rem;
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.case-breadcrumb a { color: inherit; text-decoration: none; }
.case-breadcrumb a:hover { color: var(--accent); }

.case-intro {
  max-width: 1280px;
  margin: 0 auto 4rem;
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 3.5rem;
}

.case-side {
  position: sticky;
  top: 136px;
  align-self: start;
}

.case-side ol { list-style: none; }

.case-side a {
  display: block;
  padding: 0.4rem 0;
  color: var(--text);
  text-decoration: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color 0.25s ease, transform 0.25s ease;
}

.case-side a:hover {
  color: var(--accent);
  transform: translateX(4px);
}

.case-kicker {
  margin-bottom: 1rem;
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.case-title {
  max-width: 900px;
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(4.5rem, 10vw, 9rem);
  line-height: 0.78;
  font-weight: 400;
  letter-spacing: -0.045em;
}

.case-summary {
  max-width: 720px;
  margin: 2.2rem 0 2.5rem;
  color: var(--text);
  font-size: 1.05rem;
  line-height: 1.85;
}

.case-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.case-fact small {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.case-fact span { font-size: 0.82rem; color: var(--ink); }

.case-visual {
  max-width: 1280px;
  min-height: min(680px, 70vw);
  margin: 0 auto 7rem;
  position: relative;
  overflow: hidden;
  border-radius: 18px;
  background: #121e42;
  background-image: radial-gradient(circle, rgba(255,255,255,0.18) 1px, transparent 1px);
  background-size: 30px 30px;
}

.case-visual--fantasy { background-color: #061511; }

.case-visual img {
  position: absolute;
  display: block;
  object-fit: cover;
  object-position: top;
  border: 1px solid rgba(255,255,255,0.2);
  box-shadow: 0 28px 80px rgba(0,0,0,0.38);
}

.case-visual .phone {
  width: min(29%, 330px);
  left: 9%;
  top: 8%;
  border-radius: 28px;
  transform: rotate(-3deg);
}

.case-visual .panel {
  width: 68%;
  height: 68%;
  right: -4%;
  top: 17%;
  border-radius: 16px;
  transform: rotate(2deg);
}

.case-visual--fantasy .phone:first-child {
  left: 23%;
  top: 13%;
  transform: rotate(-6deg);
}

.case-visual--fantasy .phone:last-child {
  left: auto;
  right: 23%;
  top: 5%;
  transform: rotate(5deg);
}

.case-visual--gallery {
  min-height: 0;
  padding: 3.5rem 3.5rem 7rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 3.5rem);
  align-items: stretch;
}

.case-visual--gallery .gallery-shot {
  position: relative;
  inset: auto;
  width: 100%;
  height: clamp(560px, 58vw, 740px);
  max-height: none;
  object-fit: contain;
  object-position: top center;
  background: #00050c;
  border-radius: clamp(16px, 2vw, 26px);
  transform: none;
}

.case-store-row {
  position: absolute;
  left: 2rem;
  bottom: 2rem;
  z-index: 4;
  display: flex;
  gap: 0.5rem;
}

.case-store {
  height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0 0.9rem;
  border: 1px solid rgba(255,255,255,0.32);
  border-radius: 7px;
  color: #fff;
  background: #050505;
  text-decoration: none;
}

.case-store svg { width: 18px; height: 21px; }

.case-store-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.case-store-text small { font-size: 0.5rem; }
.case-store-text strong { margin-top: 3px; font-size: 0.83rem; font-weight: 500; }

.case-content {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 3.5rem;
}

.case-sections { min-width: 0; }

.case-section {
  min-height: 58vh;
  padding: 1rem 0 7rem;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 130px;
}

.case-section:last-child { border-bottom: 0; }

.case-section-number {
  margin-bottom: 1.2rem;
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.case-section h2 {
  margin-bottom: 1.5rem;
  font-family: 'DM Sans', sans-serif;
  font-size: clamp(2.2rem, 5vw, 5rem);
  line-height: 1;
  font-weight: 400;
  letter-spacing: -0.045em;
  text-transform: uppercase;
}

.case-section p {
  max-width: 760px;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.9;
}

.case-section p + p { margin-top: 1rem; }

.case-quote {
  max-width: 900px;
  margin-top: 2.5rem;
  padding: 2rem 0 0 2rem;
  border-left: 2px solid var(--accent);
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(1.8rem, 3.5vw, 3.2rem);
  line-height: 1.2;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 2.5rem;
}

.tech-card {
  min-height: 130px;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.tech-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.tech-card small {
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.56rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.tech-card strong {
  display: block;
  margin-top: 1.7rem;
  font-size: 0.95rem;
  font-weight: 500;
}

.case-next {
  margin-top: 3rem;
  display: block;
  padding: 4rem 3rem;
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  border-top: 1px solid var(--border);
}

.case-next-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: end;
}

.case-next small {
  display: block;
  margin-bottom: 0.8rem;
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.case-next strong {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(2.7rem, 6vw, 5.5rem);
  font-weight: 400;
}

.case-next-arrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2.5rem;
  transition: transform 0.25s ease;
}

.case-next:hover .case-next-arrow { transform: translate(6px, -6px); }

@media (max-width: 850px) {
  .case-nav { height: 78px; padding: 0 1.25rem; }
  .case-logo img { height: 42px; }
  .case-nav-right { gap: 1rem; }
  .case-nav-links { display: none; }
  .case-main { padding: 3rem 1.25rem 0; }
  .case-intro,
  .case-content { grid-template-columns: 1fr; gap: 0; }
  .case-side { display: none; }
  .case-title { font-size: clamp(4rem, 23vw, 7rem); }
  .case-visual {
    min-height: 560px;
    margin-bottom: 5rem;
    border-radius: 12px;
  }
  .case-visual .phone { width: 52%; left: 7%; top: 7%; }
  .case-visual .panel { width: 78%; height: 46%; right: -14%; top: 43%; }
  .case-visual--fantasy .phone:first-child { left: 5%; }
  .case-visual--fantasy .phone:last-child { right: 5%; }
  .case-visual--gallery {
    min-height: 0;
    display: flex;
    gap: 1rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
    padding: 2rem 1rem 6.5rem;
  }
  .case-visual--gallery::-webkit-scrollbar { display: none; }
  .case-visual--gallery .gallery-shot {
    flex: 0 0 min(74vw, 360px);
    width: min(74vw, 360px);
    height: min(148vw, 720px);
    scroll-snap-align: center;
  }
  .case-store-row { left: 1rem; bottom: 1rem; }
  .case-store { height: 38px; padding: 0 0.65rem; }
  .case-section { min-height: auto; padding-bottom: 5rem; }
  .tech-grid { grid-template-columns: 1fr 1fr; }
  .case-next { padding: 3rem 1.25rem; }
}

@media (max-width: 520px) {
  .case-visual { min-height: 500px; }
  .case-store-row { flex-wrap: wrap; right: 1rem; }
  .tech-grid { grid-template-columns: 1fr; }
}