/* ── 6. BELGELER GRİD & BANNER ── */
.oi-doc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-bottom: 50px; }
.oi-doc-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 20px;
  padding: 30px 26px; transition: all 0.4s ease; display: flex; flex-direction: column; gap: 14px;
}
.oi-doc-card:hover {
  box-shadow: var(--shadow-md); transform: translateY(-6px);
  border-color: var(--teal); border-bottom: 3px solid var(--teal);
}
.oi-doc-header { display: flex; gap: 14px; align-items: flex-start; }
.oi-doc-icon { font-size: 2rem; line-height: 1; flex-shrink: 0; }
.oi-doc-tag {
  font-family: 'Space Mono', monospace; font-size: 0.55rem; letter-spacing: 0.18em;
  color: var(--teal); text-transform: uppercase; display: block; margin-bottom: 4px;
}
.oi-doc-card h4 { font-family: 'Playfair Display', serif; font-size: 1.1rem; font-weight: 400; color: var(--text); line-height: 1.3; }
.oi-doc-card > p { font-family: 'DM Sans', sans-serif; font-size: 0.92rem; color: var(--text-2); line-height: 1.75; flex: 1; }
.oi-doc-how {
  background: var(--teal-light); border-radius: 12px; padding: 14px 16px;
  border-left: 3px solid var(--teal); margin-top: auto;
}
.oi-doc-how strong {
  font-family: 'Space Mono', monospace; font-size: 0.62rem; letter-spacing: 0.1em;
  color: var(--teal); text-transform: uppercase; display: block; margin-bottom: 6px;
}
.oi-doc-how p { font-family: 'DM Sans', sans-serif; font-size: 0.88rem; color: var(--text-2); line-height: 1.65; margin: 0; }

/* Belge CTA Banner */
.oi-doc-cta {
  background: linear-gradient(135deg, var(--text) 0%, #2a2a4e 100%);
  border-radius: 24px; padding: 44px 48px; display: flex; align-items: center;
  justify-content: space-between; gap: 30px; overflow: hidden; position: relative;
}
.oi-doc-cta::before {
  content: '書'; position: absolute; right: 180px; top: 50%; transform: translateY(-50%);
  font-family: 'Noto Serif JP', serif; font-size: 160px; color: rgba(255,255,255,0.03); pointer-events: none;
}
.oi-doc-cta-text h3 { font-family: 'Playfair Display', serif; font-size: 1.5rem; font-weight: 300; color: #fff; margin-bottom: 8px; }
.oi-doc-cta-text p { font-family: 'DM Sans', sans-serif; font-size: 0.95rem; color: rgba(255,255,255,0.6); }
.oi-doc-cta-btn {
  display: inline-block; padding: 14px 32px; background: var(--teal); color: #fff;
  font-family: 'Space Mono', monospace; font-size: 0.72rem; letter-spacing: 0.15em;
  border-radius: 40px; text-decoration: none; text-transform: uppercase; white-space: nowrap; transition: all 0.3s; flex-shrink: 0;
}
.oi-doc-cta-btn:hover { background: var(--coral); transform: translateY(-3px); box-shadow: 0 10px 30px rgba(231, 111, 81, 0.4); }