.case-hero {
  padding: 44px 0 96px;
  overflow: hidden;
  background:
    radial-gradient(circle at 88% 10%, rgba(214, 161, 58, 0.18), transparent 30%),
    linear-gradient(180deg, #fbfaf7 0%, #fff 76%);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 64px;
  color: var(--muted);
  font-size: 12px;
}

.breadcrumb a:hover {
  color: var(--navy);
}

.case-hero-copy {
  max-width: 850px;
  margin-bottom: 48px;
}

.case-hero h1 {
  margin: 12px 0 22px;
  color: var(--navy);
  font-size: clamp(36px, 5.4vw, 64px);
  line-height: 1.35;
  letter-spacing: 0.06em;
}

.case-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 24px;
  padding: 8px 15px;
  border: 1px solid rgba(214, 161, 58, 0.36);
  border-radius: 999px;
  color: var(--navy);
  background: rgba(255, 255, 255, 0.9);
  font-size: 14px;
  font-weight: 800;
}

.case-status span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
}

.case-lead {
  color: var(--navy-dark);
  font-size: 17px;
  font-weight: 600;
  line-height: 2;
}

.case-browser {
  overflow: hidden;
  border: 1px solid rgba(6, 43, 85, 0.12);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 28px 70px rgba(5, 35, 70, 0.15);
}

.browser-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 46px;
  padding: 0 17px;
  background: #f2f5f8;
}

.browser-bar > span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #c7d0da;
}

.browser-bar > div {
  width: min(430px, 55%);
  margin-left: 12px;
  padding: 5px 14px;
  border-radius: 6px;
  color: #758293;
  background: #fff;
  font-size: 10px;
  text-align: center;
  letter-spacing: 0.08em;
}

.case-browser img {
  width: 100%;
}

.screen-note {
  margin-top: 18px;
  color: var(--muted);
  font-size: 12px;
  text-align: right;
}

.case-section {
  padding: 104px 0;
}

.case-section-soft {
  background: #f7f8fa;
}

.case-heading {
  max-width: 650px;
}

.case-heading h2,
.responsive-copy h2,
.case-contact h2 {
  margin: 8px 0 20px;
  color: var(--navy);
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.45;
  letter-spacing: 0.06em;
}

.case-heading > p:not(.section-label) {
  color: var(--muted);
  font-size: 16px;
}

.case-heading-center {
  margin: 0 auto 54px;
  text-align: center;
}

.case-overview {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  align-items: start;
  gap: 80px;
}

.overview-list {
  border-top: 1px solid var(--line);
}

.overview-list > div {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 26px;
  padding: 21px 4px;
  border-bottom: 1px solid var(--line);
}

.overview-list dt {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.overview-list dd {
  color: var(--navy-dark);
  font-size: 15px;
  font-weight: 700;
}

.point-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.point-card {
  min-height: 245px;
  padding: 34px;
  border: 1px solid rgba(6, 43, 85, 0.09);
  border-radius: 14px;
  background: #fff;
}

.point-card > span {
  display: block;
  margin-bottom: 22px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.point-card h3 {
  margin-bottom: 13px;
  color: var(--navy);
  font-size: 19px;
}

.point-card p {
  color: var(--muted);
  font-size: 15px;
}

.page-guide-list {
  margin-top: 54px;
  border-top: 1px solid var(--line);
}

.page-guide {
  display: grid;
  grid-template-columns: 70px 270px 1fr;
  align-items: center;
  gap: 30px;
  padding: 32px 8px;
  border-bottom: 1px solid var(--line);
}

.page-guide-number,
.page-guide-en {
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.page-guide h3 {
  color: var(--navy);
  font-size: 19px;
}

.page-guide > p {
  color: var(--muted);
  font-size: 15px;
}

.case-section-navy {
  color: #fff;
  background:
    radial-gradient(circle at 83% 15%, rgba(214, 161, 58, 0.21), transparent 31%),
    var(--navy-dark);
}

.case-responsive-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  align-items: center;
  gap: 76px;
}

.responsive-copy .section-label {
  color: #e6bd67;
}

.responsive-copy h2 {
  color: #fff;
}

.responsive-copy > p:not(.section-label) {
  color: rgba(255, 255, 255, 0.76);
  font-size: 15px;
}

.responsive-copy ul {
  display: grid;
  gap: 9px;
  margin-top: 26px;
  list-style: none;
}

.responsive-copy li {
  position: relative;
  padding-left: 22px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
}

.responsive-copy li::before {
  position: absolute;
  top: 0.9em;
  left: 0;
  width: 8px;
  height: 1px;
  background: var(--gold);
  content: "";
}

.responsive-visual {
  padding: 10px 10px 24px;
  border-radius: 14px;
  background: #0e1a28;
  box-shadow: 0 28px 55px rgba(0, 0, 0, 0.25);
}

.responsive-screen {
  overflow: hidden;
  border-radius: 8px;
}

.responsive-screen img {
  width: 100%;
}

.responsive-device-label {
  padding-top: 13px;
  color: rgba(255, 255, 255, 0.52);
  font-size: 9px;
  font-weight: 800;
  text-align: center;
  letter-spacing: 0.2em;
}

.case-progress {
  background: #fff;
}

.case-progress-layout {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: start;
  gap: 78px;
}

.progress-caution {
  margin-top: 20px;
  padding-left: 14px;
  border-left: 3px solid var(--gold);
  color: var(--navy) !important;
  font-size: 13px !important;
  font-weight: 700;
}

.progress-list {
  display: grid;
  gap: 12px;
}

.progress-list > div {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fbfaf7;
}

.progress-list span {
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
}

.progress-list p {
  color: var(--navy);
  font-size: 14px;
  font-weight: 700;
}

.case-scope {
  background: #f7f8fa;
}

.scope-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  max-width: 940px;
  margin: 0 auto;
  list-style: none;
}

.scope-list li {
  display: grid;
  min-height: 82px;
  padding: 15px;
  place-items: center;
  border: 1px solid rgba(6, 43, 85, 0.09);
  border-radius: 10px;
  color: var(--navy);
  background: #fff;
  font-size: 13px;
  font-weight: 800;
  text-align: center;
}

.case-contact {
  padding: 100px 0;
  color: #fff;
  background:
    radial-gradient(circle at 15% 90%, rgba(214, 161, 58, 0.18), transparent 29%),
    var(--navy);
}

.case-contact-inner {
  text-align: center;
}

.case-contact .section-label {
  color: #e6bd67;
}

.case-contact h2 {
  color: #fff;
}

.case-contact p:not(.section-label) {
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
}

.case-contact .btn {
  margin-top: 34px;
}

.back-to-works {
  display: block;
  width: fit-content;
  margin: 24px auto 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  font-weight: 700;
}

.back-to-works:hover {
  color: #fff;
}

.pc-only {
  display: inline;
}