:root {
  --case-blue: #0f3b78;
  --case-blue-2: #1f6fb5;
  --case-sky: #eaf5ff;
  --case-ink: #10233f;
  --case-text: #42526a;
  --case-border: rgba(15, 59, 120, 0.14);
  --case-shadow: 0 24px 70px rgba(15, 59, 120, 0.12);
  --case-radius: 24px;
}

* { box-sizing: border-box; }

body {
  color: var(--case-ink);
  background: #f7fbff;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.case-hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 64px;
  background:
    radial-gradient(circle at 14% 18%, rgba(31, 111, 181, 0.16), transparent 34%),
    linear-gradient(135deg, #f5fbff 0%, #edf6ff 48%, #ffffff 100%);
}

.case-hero::before {
  content: "";
  position: absolute;
  inset: auto -140px -180px auto;
  width: 520px;
  height: 520px;
  border-radius: 999px;
  background: rgba(31, 111, 181, 0.08);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(380px, 46%);
  gap: 38px;
  align-items: center;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 22px;
  color: #6b7b92;
  font-size: 0.86rem;
}

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

.section-label {
  margin: 0 0 10px;
  color: var(--case-blue-2);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.industry-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 8px 14px;
  border: 1px solid rgba(31, 111, 181, 0.22);
  border-radius: 999px;
  color: var(--case-blue);
  background: rgba(255, 255, 255, 0.84);
  font-weight: 700;
  font-size: 0.9rem;
}

.hero-copy h1 {
  margin: 0;
  color: var(--case-ink);
  font-size: clamp(2rem, 4vw, 3.7rem);
  line-height: 1.18;
  letter-spacing: -0.04em;
}

.hero-lead {
  margin: 24px 0 0;
  color: var(--case-text);
  font-size: clamp(1rem, 1.5vw, 1.13rem);
  line-height: 2;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 22px;
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--case-blue), var(--case-blue-2));
  box-shadow: 0 12px 28px rgba(15, 59, 120, 0.24);
}

.button-secondary {
  color: var(--case-blue);
  background: #fff;
  border: 1px solid rgba(15, 59, 120, 0.16);
}

.hero-panel {
  display: grid;
  gap: 18px;
}

.hero-visual-card,
.case-visual {
  margin: 0;
  overflow: hidden;
  border-radius: var(--case-radius);
  background: #fff;
  box-shadow: var(--case-shadow);
}

.hero-visual-card img,
.case-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.panel-card,
.content-card,
.cta-card,
.overview-card,
.step-card,
.result-card,
.metric-card,
.support-message {
  border: 1px solid var(--case-border);
  border-radius: var(--case-radius);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--case-shadow);
}

.panel-card {
  padding: 24px;
}

.panel-title {
  margin: 0 0 14px;
  color: var(--case-blue);
  font-weight: 800;
  letter-spacing: 0.06em;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.tag-list li,
.pill-grid span,
.cta-points span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 7px 11px;
  border: 1px solid rgba(31, 111, 181, 0.18);
  border-radius: 999px;
  color: var(--case-blue);
  background: #f0f8ff;
  font-weight: 700;
  font-size: 0.84rem;
}

.summary-list {
  display: grid;
  gap: 14px;
  margin: 0;
}

.summary-list div {
  display: grid;
  gap: 4px;
  padding-top: 14px;
  border-top: 1px solid rgba(15, 59, 120, 0.12);
}

.summary-list dt {
  color: #66758a;
  font-size: 0.82rem;
  font-weight: 800;
}

.summary-list dd {
  margin: 0;
  color: var(--case-ink);
  line-height: 1.7;
}

.section-block {
  padding: 74px 0;
}

.white-section {
  background: #fff;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading h2 {
  margin: 0;
  color: var(--case-ink);
  font-size: clamp(1.72rem, 2.8vw, 2.5rem);
  letter-spacing: -0.03em;
  line-height: 1.35;
}

.section-heading p:not(.section-label) {
  margin: 13px 0 0;
  color: var(--case-text);
  line-height: 1.9;
}

.center-heading {
  max-width: 820px;
  margin-inline: auto;
  text-align: center;
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.overview-card {
  padding: 28px;
}

.overview-card span {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  color: #fff;
  background: var(--case-blue);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.overview-card h3,
.step-card h3,
.result-card h3,
.metric-card h3,
.timeline h3 {
  margin: 0 0 10px;
  color: var(--case-ink);
  font-size: 1.18rem;
  line-height: 1.5;
}

.overview-card p,
.step-card p,
.result-card p,
.metric-card p,
.timeline p,
.content-card p,
.support-message-body p,
.cta-card p,
.note-text {
  margin: 0;
  color: var(--case-text);
  line-height: 1.95;
}

.single-column-section {
  display: grid;
  grid-template-columns: minmax(220px, 0.34fr) minmax(0, 1fr);
  gap: 36px;
  align-items: start;
}

.sticky-heading {
  position: sticky;
  top: 96px;
}

.content-card {
  padding: 30px;
}

.content-card p + p,
.support-message-body p + p,
.cta-card p + p {
  margin-top: 16px;
}

.content-card .case-visual {
  margin-bottom: 24px;
}

.check-list {
  display: grid;
  gap: 11px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  color: var(--case-ink);
  line-height: 1.8;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0.1em;
  display: grid;
  place-items: center;
  width: 21px;
  height: 21px;
  border-radius: 999px;
  color: #fff;
  background: var(--case-blue-2);
  font-size: 0.78rem;
  font-weight: 900;
}

.support-steps {
  display: grid;
  gap: 18px;
}

.support-visual {
  margin-bottom: 4px;
}

.step-card {
  position: relative;
  padding: 26px 26px 26px 82px;
}

.step-number,
.result-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(135deg, var(--case-blue), var(--case-blue-2));
  font-weight: 900;
}

.step-number {
  position: absolute;
  top: 26px;
  left: 26px;
}

.timeline {
  display: grid;
  gap: 18px;
  max-width: 940px;
  margin: 0 auto;
}

.timeline-item {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 22px;
  padding: 24px;
  border: 1px solid var(--case-border);
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 14px 40px rgba(15, 59, 120, 0.08);
}

.timeline-period {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: start;
  min-height: 44px;
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--case-blue);
  background: var(--case-sky);
  font-weight: 900;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 26px;
}

.metric-card {
  padding: 26px;
  text-align: center;
}

.metric-number {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  margin-bottom: 12px;
  color: var(--case-blue);
  font-size: clamp(2.25rem, 4vw, 3.2rem);
  font-weight: 900;
  letter-spacing: -0.06em;
  line-height: 1;
}

.metric-number span {
  font-size: 0.48em;
  letter-spacing: 0;
}

.result-section .case-visual {
  margin-bottom: 22px;
}

.message-band {
  margin-top: 24px;
  padding: 22px 26px;
  border-radius: 20px;
  color: #fff;
  background: linear-gradient(135deg, var(--case-blue), var(--case-blue-2));
  box-shadow: 0 14px 34px rgba(15, 59, 120, 0.22);
}

.message-band p {
  margin: 0;
  color: #fff;
  font-size: 1.08rem;
  font-weight: 800;
  line-height: 1.8;
  text-align: center;
}

.accent-card {
  background: linear-gradient(180deg, #ffffff 0%, #f4f9ff 100%);
}

.quote-box {
  margin-top: 24px;
  padding: 22px;
  border-left: 5px solid var(--case-blue-2);
  border-radius: 18px;
  background: #fff;
}

.quote-box p {
  color: var(--case-blue);
  font-weight: 800;
}

.support-message-section {
  color: #fff;
  background: linear-gradient(135deg, var(--case-blue) 0%, #143c6d 58%, #1f6fb5 100%);
}

.support-message {
  display: grid;
  grid-template-columns: 0.42fr 1fr;
  gap: 34px;
  padding: 36px;
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: none;
}

.support-message .section-label,
.support-message h2,
.support-message p {
  color: #fff;
}

.support-message h2 {
  margin: 0;
  font-size: clamp(1.6rem, 2.8vw, 2.3rem);
  line-height: 1.35;
}

.support-message-body p {
  color: rgba(255, 255, 255, 0.92);
}

.pill-grid,
.cta-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.cta-section {
  padding: 78px 0;
  background:
    linear-gradient(rgba(255,255,255,0.9), rgba(255,255,255,0.9)),
    radial-gradient(circle at 20% 10%, rgba(31,111,181,0.16), transparent 30%),
    #f1f8ff;
}

.cta-card {
  padding: clamp(30px, 5vw, 52px);
  text-align: center;
}

.cta-card h2 {
  margin: 0;
  color: var(--case-ink);
  font-size: clamp(1.7rem, 3vw, 2.55rem);
  letter-spacing: -0.03em;
  line-height: 1.4;
}

.cta-card > p {
  max-width: 820px;
  margin: 16px auto 0;
}

.cta-points {
  justify-content: center;
}

.center-actions {
  justify-content: center;
}

.note-text {
  margin-top: 18px;
  text-align: center;
  font-size: 0.9rem;
}

@media (max-width: 980px) {
  .hero-grid,
  .single-column-section,
  .support-message {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    max-width: 720px;
  }

  .sticky-heading {
    position: static;
  }

  .overview-grid,
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .case-hero,
  .section-block,
  .cta-section {
    padding: 48px 0;
  }

  .hero-copy h1 br {
    display: none;
  }

  .hero-actions,
  .center-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

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

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .step-card {
    padding: 24px;
  }

  .step-number {
    position: static;
    margin-bottom: 14px;
  }

  .content-card,
  .panel-card,
  .overview-card,
  .metric-card,
  .support-message,
  .cta-card {
    padding: 22px;
  }

  .hero-visual-card,
  .case-visual,
  .panel-card,
  .content-card,
  .cta-card,
  .overview-card,
  .step-card,
  .metric-card,
  .support-message {
    border-radius: 18px;
  }

  .message-band p {
    text-align: left;
    font-size: 1rem;
  }
}

/* Accessibility: visually hide skip link until keyboard focus */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  white-space: nowrap;
}
.skip-link:focus,
.skip-link:focus-visible {
  left: 16px;
  top: 16px;
  width: auto;
  height: auto;
  z-index: 10000;
  padding: 10px 14px;
  border-radius: 10px;
  background: #ffffff;
  color: #0f3b78;
  font-weight: 800;
  line-height: 1.4;
  text-decoration: none;
  box-shadow: 0 10px 28px rgba(15, 59, 120, .22);
  outline: 3px solid rgba(31, 111, 181, .35);
}