/* Tarihçe */
.tc-hero {
  background: linear-gradient(135deg, #06101c 0%, #0b1a2e 45%, #122844 100%);
  padding: 96px 0 72px;
  position: relative;
  overflow: hidden;
}
.tc-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 75% 25%, rgba(37, 99, 235, .18) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 10% 80%, rgba(16, 185, 129, .1) 0%, transparent 60%);
}
.tc-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(37, 99, 235, .14);
  border: 1px solid rgba(96, 165, 250, .28);
  border-radius: 20px;
  padding: 6px 16px;
  font-size: .75rem;
  font-weight: 700;
  color: #93c5fd;
  letter-spacing: .07em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.tc-hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 20px;
}
.tc-hero h1 span {
  background: linear-gradient(90deg, #60a5fa, #34d399);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.tc-hero .lead {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, .65);
  line-height: 1.75;
  max-width: 560px;
  margin-bottom: 28px;
}
.btn-tc-primary,
.btn-tc-ghost,
.btn-tc-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 12px;
  font-weight: 700;
  text-decoration: none;
  transition: .2s ease;
}
.btn-tc-primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #fff;
}
.btn-tc-primary:hover { filter: brightness(1.08); color: #fff; }
.btn-tc-ghost {
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .16);
  color: #e2e8f0;
}
.btn-tc-ghost:hover { background: rgba(255, 255, 255, .08); color: #fff; }
.btn-tc-outline {
  border: 1px solid #cbd5e1;
  color: #0f172a;
  background: #fff;
}
.btn-tc-outline:hover { border-color: #2563eb; color: #1d4ed8; }
.tc-hero-visual img {
  max-width: 100%;
  height: auto;
  border-radius: 16px;
  box-shadow: 0 24px 48px rgba(0, 0, 0, .35);
}

.tc-section { padding: 80px 0; background: #fff; }
.tc-section--alt { background: #f4f7fb; }
.tc-tag {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #2563eb;
  margin-bottom: 12px;
}
.tc-title {
  font-size: clamp(1.55rem, 3vw, 2.1rem);
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 16px;
}
.tc-sub {
  color: #64748b;
  font-size: 1.02rem;
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.65;
}
.tc-prose {
  color: #334155;
  font-size: 1.05rem;
  line-height: 1.85;
}
.tc-prose p { margin-bottom: 1.1rem; }
.tc-prose a {
  color: #1d4ed8;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.tc-side-card {
  background: #0f172a;
  border-radius: 18px;
  overflow: hidden;
  color: #e2e8f0;
}
.tc-side-card img {
  width: 100%;
  height: auto;
  display: block;
}
.tc-side-card p {
  margin: 0;
  padding: 18px 20px 8px;
  line-height: 1.55;
}
.tc-side-card a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 20px 20px;
  color: #93c5fd;
  font-weight: 700;
  text-decoration: none;
}
.tc-side-card a:hover { color: #fff; }

.tc-timeline {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  padding-left: 8px;
}
.tc-timeline::before {
  content: '';
  position: absolute;
  left: 92px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, #93c5fd, #34d399);
}
.tc-tl-item {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 24px;
  margin-bottom: 22px;
  position: relative;
}
.tc-tl-year {
  font-weight: 900;
  font-size: 1.15rem;
  color: #1d4ed8;
  text-align: right;
  padding-top: 14px;
}
.tc-tl-body {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 16px 18px;
  position: relative;
}
.tc-tl-body::before {
  content: '';
  position: absolute;
  left: -31px;
  top: 20px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #2563eb;
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px #93c5fd;
}
.tc-tl-body h3 {
  font-size: 1.05rem;
  font-weight: 750;
  margin: 0 0 6px;
  color: #0f172a;
}
.tc-tl-body p {
  margin: 0;
  color: #64748b;
  line-height: 1.55;
  font-size: .95rem;
}
.tc-tl-item--accent .tc-tl-year { color: #059669; }
.tc-tl-item--accent .tc-tl-body::before {
  background: #059669;
  box-shadow: 0 0 0 2px #6ee7b7;
}
.tc-tl-item--now .tc-tl-year { color: #0e7490; }
.tc-tl-item--now .tc-tl-body {
  border-color: #67e8f9;
  background: linear-gradient(135deg, #ecfeff, #fff);
}
.tc-tl-item--now .tc-tl-body::before {
  background: #0891b2;
  box-shadow: 0 0 0 2px #67e8f9;
}

.tc-badge-link {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 18px 20px;
  border-radius: 14px;
  border: 1px solid #dbeafe;
  background: #f8fbff;
  text-decoration: none;
  color: #334155;
  height: 100%;
  transition: .2s ease;
}
.tc-badge-link:hover {
  border-color: #93c5fd;
  background: #eff6ff;
  color: #0f172a;
}
.tc-badge-link i {
  color: #2563eb;
  font-size: 1.25rem;
  margin-top: 2px;
}
.tc-badge-link strong { color: #0f172a; }
.tc-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 40px;
}

@media (max-width: 767.98px) {
  .tc-hero { padding: 72px 0 56px; }
  .tc-section { padding: 56px 0; }
  .tc-timeline::before { left: 18px; }
  .tc-tl-item {
    grid-template-columns: 1fr;
    gap: 8px;
    padding-left: 36px;
  }
  .tc-tl-year { text-align: left; padding-top: 0; }
  .tc-tl-body::before { left: -24px; }
}