:root {
  --case-primary: #134a62;
  --case-primary-dark: #0d384a;
  --case-accent: #49a9ad;
  --case-ink: #172127;
  --case-text: #3c4a52;
  --case-muted: #6d7b82;
  --case-bg: #f4f8f9;
  --case-surface: #ffffff;
  --case-border: rgba(19, 74, 98, 0.16);
  --case-shadow: 0 18px 50px rgba(19, 74, 98, 0.12);
  --case-radius: 24px;
  --case-font-heading: 'Montserrat', sans-serif;
  --case-font-body: 'Inter', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--case-bg);
  color: var(--case-text);
  font-family: var(--case-font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

a {
  color: var(--case-primary);
}

.case-container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.case-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(19, 74, 98, 0.08);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.case-header__inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.case-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--case-primary);
  font-family: var(--case-font-heading);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.case-logo img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  object-fit: contain;
}

.case-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.case-nav a {
  color: var(--case-text);
  font-size: 15px;
  font-weight: 650;
  text-decoration: none;
}

.case-nav a:hover {
  color: var(--case-primary);
}

.case-phone {
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--case-primary);
  background: #eaf2f4;
  text-decoration: none;
}

.case-phone:hover {
  background: #dcebed;
  transform: translateY(-1px);
}

.case-phone svg {
  width: 22px;
  height: 22px;
}

.case-menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: 14px;
  background: #eaf2f4;
  cursor: pointer;
}

.case-menu-toggle span {
  width: 24px;
  height: 3px;
  display: block;
  margin: 4px auto;
  border-radius: 10px;
  background: var(--case-primary);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.case-menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.case-menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.case-menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.case-breadcrumbs {
  padding: 18px 0;
  font-size: 14px;
  color: var(--case-muted);
}

.case-breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.case-breadcrumbs li:not(:last-child)::after {
  content: '›';
  margin-left: 8px;
  color: #9aa6ab;
}

.case-breadcrumbs a {
  text-decoration: none;
}

.case-hero {
  position: relative;
  overflow: hidden;
  padding: 58px 0 82px;
  background:
    radial-gradient(circle at 85% 10%, rgba(73, 169, 173, 0.22), transparent 34%),
    linear-gradient(135deg, #eef6f7 0%, #ffffff 56%, #f2f7f8 100%);
}

.case-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.98fr);
  align-items: center;
  gap: 56px;
}

.case-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  padding: 9px 14px;
  border: 1px solid rgba(19, 74, 98, 0.14);
  border-radius: 999px;
  color: var(--case-primary);
  background: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.case-eyebrow::before {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--case-accent);
  content: '';
}

.case-hero h1,
.case-section h2,
.case-card h3,
.case-cta h2 {
  color: var(--case-ink);
  font-family: var(--case-font-heading);
  letter-spacing: -0.035em;
}

.case-hero h1 {
  max-width: 780px;
  font-size: clamp(36px, 5vw, 62px);
  line-height: 1.08;
}

.case-lead {
  max-width: 720px;
  margin-top: 24px;
  color: var(--case-text);
  font-size: clamp(18px, 2vw, 21px);
  line-height: 1.65;
}

.case-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 34px;
}

.case-stat {
  min-height: 112px;
  padding: 20px;
  border: 1px solid var(--case-border);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.82);
}

.case-stat strong {
  display: block;
  color: var(--case-primary);
  font-family: var(--case-font-heading);
  font-size: 25px;
  line-height: 1.2;
}

.case-stat span {
  display: block;
  margin-top: 8px;
  color: var(--case-muted);
  font-size: 13px;
  line-height: 1.35;
}

.case-hero__media {
  overflow: hidden;
  border: 10px solid rgba(255, 255, 255, 0.92);
  border-radius: 30px;
  background: var(--case-surface);
  box-shadow: var(--case-shadow);
  transform: rotate(1deg);
}

.case-hero__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.case-hero__caption {
  padding: 15px 18px;
  color: var(--case-muted);
  font-size: 13px;
}

.case-section {
  padding: 82px 0;
}

.case-section--white {
  background: var(--case-surface);
}

.case-section__heading {
  max-width: 760px;
  margin-bottom: 36px;
}

.case-section__heading h2 {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.15;
}

.case-section__heading p {
  margin-top: 14px;
  color: var(--case-muted);
  font-size: 18px;
}

.case-overview {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 28px;
}

.case-card {
  padding: 34px;
  border: 1px solid var(--case-border);
  border-radius: var(--case-radius);
  background: var(--case-surface);
  box-shadow: 0 12px 34px rgba(19, 74, 98, 0.07);
}

.case-card h3 {
  margin-bottom: 18px;
  font-size: 24px;
}

.case-card p + p {
  margin-top: 16px;
}

.case-checklist {
  display: grid;
  gap: 14px;
  list-style: none;
}

.case-checklist li {
  position: relative;
  padding-left: 30px;
}

.case-checklist li::before {
  position: absolute;
  top: 2px;
  left: 0;
  width: 21px;
  height: 21px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--case-surface);
  background: var(--case-primary);
  content: '✓';
  font-size: 12px;
  font-weight: 800;
}

.case-timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.case-step {
  position: relative;
  min-height: 230px;
  padding: 30px;
  overflow: hidden;
  border: 1px solid var(--case-border);
  border-radius: var(--case-radius);
  background: linear-gradient(150deg, #ffffff, #f2f8f8);
}

.case-step__number {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 24px;
  border-radius: 14px;
  color: var(--case-surface);
  background: var(--case-primary);
  font-family: var(--case-font-heading);
  font-weight: 800;
}

.case-step h3 {
  margin-bottom: 12px;
  color: var(--case-ink);
  font-family: var(--case-font-heading);
  font-size: 21px;
}

.case-results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.case-result {
  padding: 24px 26px;
  border-left: 4px solid var(--case-accent);
  border-radius: 0 18px 18px 0;
  background: #eff6f7;
  color: var(--case-ink);
  font-weight: 650;
}

.case-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.case-gallery__item {
  overflow: hidden;
  border-radius: 20px;
  background: #dce8ea;
  box-shadow: 0 9px 26px rgba(19, 74, 98, 0.1);
}

.case-gallery__item img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.case-gallery__item:hover img {
  transform: scale(1.035);
}

.case-gallery__hint {
  margin-top: 18px;
  color: var(--case-muted);
  font-size: 14px;
}

.case-related {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.case-related a {
  min-height: 112px;
  display: flex;
  align-items: flex-end;
  padding: 24px;
  border: 1px solid var(--case-border);
  border-radius: 20px;
  color: var(--case-ink);
  background: var(--case-surface);
  font-family: var(--case-font-heading);
  font-weight: 750;
  line-height: 1.35;
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.case-related a:hover {
  border-color: var(--case-accent);
  box-shadow: 0 12px 28px rgba(19, 74, 98, 0.1);
  transform: translateY(-3px);
}

.case-cta {
  padding: 72px 0;
  color: var(--case-surface);
  background:
    radial-gradient(circle at 85% 0, rgba(73, 169, 173, 0.35), transparent 36%),
    var(--case-primary-dark);
  text-align: center;
}

.case-cta h2 {
  color: var(--case-surface);
  font-size: clamp(30px, 4vw, 46px);
}

.case-cta p {
  max-width: 700px;
  margin: 16px auto 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 18px;
}

.case-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 30px;
}

.case-button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 26px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  color: var(--case-primary-dark);
  background: var(--case-surface);
  font-weight: 750;
  text-decoration: none;
}

.case-button--ghost {
  color: var(--case-surface);
  background: transparent;
}

.case-footer {
  padding: 42px 0;
  color: rgba(255, 255, 255, 0.75);
  background: #102832;
}

.case-footer__grid {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 28px;
}

.case-footer strong {
  display: block;
  margin-bottom: 7px;
  color: #ffffff;
  font-family: var(--case-font-heading);
  font-size: 21px;
}

.case-footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 16px;
}

.case-footer a {
  color: #ffffff;
  text-decoration: none;
}

:focus-visible {
  outline: 3px solid rgba(73, 169, 173, 0.55);
  outline-offset: 3px;
}

@media (max-width: 920px) {
  .case-menu-toggle {
    display: block;
    order: 2;
  }

  .case-phone {
    order: 3;
  }

  .case-nav {
    position: fixed;
    top: 82px;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 14px 20px 24px;
    border-bottom: 1px solid var(--case-border);
    background: #ffffff;
    box-shadow: 0 20px 30px rgba(19, 74, 98, 0.12);
  }

  .case-nav.is-open {
    display: flex;
  }

  .case-nav a {
    padding: 14px 10px;
    border-bottom: 1px solid rgba(19, 74, 98, 0.08);
  }

  .case-hero__grid,
  .case-overview {
    grid-template-columns: 1fr;
  }

  .case-hero__media {
    max-width: 680px;
    transform: none;
  }

  .case-timeline,
  .case-gallery,
  .case-related {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .case-container {
    width: min(100% - 28px, 1180px);
  }

  .case-header__inner {
    min-height: 72px;
    gap: 10px;
  }

  .case-logo span {
    display: none;
  }

  .case-logo img,
  .case-phone,
  .case-menu-toggle {
    width: 44px;
    height: 44px;
  }

  .case-phone {
    flex-basis: 44px;
  }

  .case-nav {
    top: 72px;
  }

  .case-hero {
    padding: 34px 0 58px;
  }

  .case-hero__grid {
    gap: 34px;
  }

  .case-eyebrow {
    font-size: 11px;
  }

  .case-hero h1 {
    font-size: 34px;
  }

  .case-lead {
    font-size: 17px;
  }

  .case-stats {
    grid-template-columns: 1fr;
  }

  .case-stat {
    min-height: 0;
  }

  .case-section {
    padding: 58px 0;
  }

  .case-card {
    padding: 24px;
  }

  .case-timeline,
  .case-results,
  .case-gallery,
  .case-related {
    grid-template-columns: 1fr;
  }

  .case-step {
    min-height: 0;
  }

  .case-gallery__item img {
    aspect-ratio: 4 / 3;
  }

  .case-footer__grid {
    grid-template-columns: 1fr;
  }

  .case-footer__links {
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}