:root {
  --bg-dark: #0f1117;
  --bg-darker: #07080c;
  --bg-light: #f5f7fb;
  --text-dark: #111827;
  --text-light: #ffffff;
  --muted: #6b7280;
  --blue: #2457ff;
  --orange: #ff6b00;
  --card: #ffffff;
  --border: #e5e7eb;
  --shadow: 0 20px 60px rgba(0,0,0,0.12);
  --radius: 22px;
}

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

body {
  font-family: Inter, Arial, Helvetica, sans-serif;
  color: var(--text-dark);
  background: var(--bg-light);
  line-height: 1.6;
  padding-bottom: 80px;
}

a { color: inherit; text-decoration: none; }

.container {
  width: min(900px, 92%);
  margin: 0 auto;
}

.case-header {
  background:
    radial-gradient(circle at top right, rgba(36,87,255,0.22), transparent 35%),
    linear-gradient(135deg, var(--bg-darker), var(--bg-dark));
  color: var(--text-light);
  padding: 42px 0 70px;
  text-align: center;
  position: relative;
}

.back-link {
  display: inline-flex;
  margin-bottom: 42px;
  color: #d1d5db;
  font-weight: 800;
}

.back-link:hover { color: #fff; }

.kicker {
  color: var(--orange);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
  margin-bottom: 16px;
  display: block;
}

h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.05em;
  max-width: 820px;
  margin: 0 auto 20px;
}

.subtitle {
  font-size: 1.2rem;
  color: #d1d5db;
  max-width: 650px;
  margin: 0 auto;
}

.case-body { padding: 60px 0; }

.content-block,
.ba-card,
.metric {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: 0 10px 30px rgba(17,24,39,0.04);
  margin-bottom: 40px;
}

h2 {
  font-size: 1.75rem;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

p {
  color: #4b5563;
  font-size: 1.1rem;
  margin-bottom: 24px;
}

.before-after {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-bottom: 40px;
}

.ba-card {
  margin-bottom: 0;
}

.ba-card ul {
  display: grid;
  gap: 12px;
  list-style: none;
}

.ba-card li {
  color: #4b5563;
  padding-left: 24px;
  position: relative;
}

.ba-card li::before {
  position: absolute;
  left: 0;
  font-weight: 900;
}

.before li::before { content: "×"; color: #ef4444; }
.after li::before { content: "✓"; color: var(--blue); }

.solution-list {
  list-style: none;
  display: grid;
  gap: 20px;
  margin-top: 10px;
}

.solution-item {
  padding-left: 30px;
  position: relative;
}

.solution-item::before {
  content: "→";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--blue);
  font-weight: 900;
  font-size: 1.2rem;
}

.solution-item strong {
  color: var(--text-dark);
  display: block;
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 40px;
}

.metric {
  margin-bottom: 0;
  text-align: center;
}

.metric strong {
  display: block;
  font-size: 2rem;
  letter-spacing: -0.04em;
}

.metric span { color: var(--muted); }

.testimonial-card {
  background: linear-gradient(135deg, #111827, #1f2937);
  color: var(--text-light);
  border-radius: var(--radius);
  padding: 45px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.testimonial-card::before {
  content: "\201C";
  position: absolute;
  font-size: 12rem;
  color: rgba(255, 107, 0, 0.08);
  top: -40px;
  left: 20px;
  font-family: Georgia, serif;
}

blockquote {
  font-size: 1.2rem;
  font-style: italic;
  line-height: 1.7;
  margin-bottom: 26px;
  position: relative;
  z-index: 1;
}

.author-info strong {
  display: block;
  font-size: 1.1rem;
  color: #fff;
}

.author-info span {
  color: #9ca3af;
  font-size: 0.95rem;
}

.cta-row {
  text-align: center;
  margin-top: 50px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 42px;
  box-shadow: 0 10px 30px rgba(17,24,39,0.04);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--blue);
  color: #fff;
  padding: 16px 32px;
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 12px 30px rgba(36,87,255,0.35);
  transition: 0.2s ease;
  font-size: 1.1rem;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 35px rgba(36,87,255,0.45);
}

@media (max-width: 760px) {
  .before-after,
  .metrics-row { grid-template-columns: 1fr; }
  .content-block,
  .testimonial-card,
  .ba-card,
  .cta-row { padding: 24px; }
  h1 { font-size: 1.9rem; }
  blockquote { font-size: 1.08rem; }
  .btn { width: 100%; }
}


/* ── Footer ── */

.case-footer {
  background: #05060a;
  color: #9ca3af;
  padding: 28px 0;
  font-size: 0.9rem;
}

.case-footer p {
  color: #9ca3af;
  margin: 0;
  font-size: 0.95rem;
}

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