/* ===== Page Header ===== */
.page-header {
  background: #0a0a0a;
  padding: 140px 0 72px;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, rgba(240,112,48,0.12) 0%, transparent 70%);
}
.page-header .container {
  position: relative;
  z-index: 1;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
  margin-bottom: 28px;
}
.breadcrumb a {
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  transition: color 0.2s;
}
.breadcrumb a:hover { color: #F07030; }
.breadcrumb span.sep { color: rgba(255,255,255,0.25); }
.page-header .section-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: #F07030;
  margin-bottom: 14px;
  display: block;
}
.page-header .page-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  color: #fff;
  margin-bottom: 16px;
}
.page-header .page-desc {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.55);
  line-height: 2;
}

/* ===== Common ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 48px; }
section { padding: 100px 0; }
.section-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: #F07030;
  margin-bottom: 14px;
  display: block;
}
.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #1A1A1A;
}
.section-desc {
  font-size: 0.95rem;
  color: #777;
  line-height: 2;
  max-width: 600px;
}
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible { opacity: 1; transform: none; }

/* ===== Sponsor Value Proposition ===== */
.sponsor-value-section { background: #1a1a1a; color: #fff; }
.sponsor-value-section .section-title { color: #fff; }
.sponsor-value-section .section-desc { color: rgba(255,255,255,0.55); }
.sv-intro { margin-bottom: 72px; }
.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.value-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 12px;
  padding: 44px 36px;
  transition: border-color 0.3s, background 0.3s, transform 0.3s;
}
.value-card:hover {
  border-color: #F07030;
  background: rgba(240,112,48,0.05);
  transform: translateY(-4px);
}
.value-num {
  font-family: 'Bebas Neue', 'Inter', sans-serif;
  font-size: 3.2rem;
  color: #F07030;
  line-height: 1;
  margin-bottom: 18px;
}
.value-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
  line-height: 1.5;
}
.value-text {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  line-height: 2;
}

/* ===== Partner Logos ===== */
.partner-logos-section { background: #fff; }
.partner-logos-intro { text-align: center; margin-bottom: 48px; }
.partner-logos-intro .section-desc { margin: 0 auto; }
.sponsor-logos-wrapper {
  overflow: hidden;
  position: relative;
  padding: 8px 0;
}
.sponsor-logos-wrapper::before,
.sponsor-logos-wrapper::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}
.sponsor-logos-wrapper::before { left: 0; background: linear-gradient(to right, white, transparent); }
.sponsor-logos-wrapper::after { right: 0; background: linear-gradient(to left, white, transparent); }
.sponsor-logos-track {
  display: flex;
  gap: 20px;
  align-items: center;
  animation: slideLeft 24s linear infinite;
  width: max-content;
}
.sponsor-logos-track:hover { animation-play-state: paused; }
.sponsor-logo-item {
  width: 160px;
  height: 72px;
  background: #f7f7f7;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid #e8e8e8;
  font-size: 0.78rem;
  color: #aaa;
  font-weight: 600;
  letter-spacing: 0.05em;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.sponsor-logo-item:hover {
  border-color: #F07030;
  box-shadow: 0 4px 16px rgba(240,112,48,0.15);
}
@keyframes slideLeft {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ===== Collaboration Cases ===== */
.cases-section { background: #FFFFFF; }
.cases-intro { margin-bottom: 56px; }
.cases-intro .section-desc { margin: 0; }
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid #eee;
  background: #fff;
  transition: box-shadow 0.3s, transform 0.3s;
}
.case-card:hover {
  box-shadow: 0 8px 40px rgba(0,0,0,0.1);
  transform: translateY(-4px);
}
.case-card-img {
  height: 210px;
  overflow: hidden;
  background: #f0f0f0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ccc;
  font-size: 0.85rem;
}
.case-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.case-card:hover .case-card-img img { transform: scale(1.05); }
.case-card-body { padding: 28px; }
.case-card-label {
  font-size: 0.68rem;
  color: #F07030;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}
.case-card-title {
  font-size: 0.98rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #1A1A1A;
}
.case-card-text {
  font-size: 0.85rem;
  color: #777;
  line-height: 1.9;
}

/* ===== Sponsor Plans ===== */
.sponsor-plans-section { background: #fff; }
.sponsor-plans-intro { text-align: center; margin-bottom: 56px; }
.sponsor-plans-intro .section-desc { margin: 0 auto; }
.plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.sponsor-plan-card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 12px;
  padding: 40px 32px;
  text-align: center;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
}
.sponsor-plan-card:hover {
  border-color: #F07030;
  box-shadow: 0 12px 48px rgba(240,112,48,0.12);
  transform: translateY(-4px);
}
.sponsor-plan-card.featured {
  background: #1a1a1a;
  border-color: #F07030;
  color: #fff;
}
.sponsor-plan-name {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #F07030;
  margin-bottom: 12px;
}
.sponsor-plan-tier {
  font-size: 1.3rem;
  font-weight: 900;
  color: #1A1A1A;
  margin-bottom: 20px;
}
.sponsor-plan-card.featured .sponsor-plan-tier { color: #fff; }
.sponsor-plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  text-align: left;
}
.sponsor-plan-features li {
  font-size: 0.85rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  display: flex;
  align-items: center;
  gap: 8px;
  color: #555;
}
.sponsor-plan-card.featured .sponsor-plan-features li {
  color: rgba(255,255,255,0.7);
  border-bottom-color: rgba(255,255,255,0.08);
}
.sponsor-plan-features li::before {
  content: '\2713';
  color: #F07030;
  font-weight: 700;
  flex-shrink: 0;
}
.sponsor-plan-cta {
  display: block;
  text-align: center;
  padding: 14px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  transition: background 0.2s, transform 0.1s;
  letter-spacing: 0.04em;
}
.sponsor-plan-cta-primary {
  background: #F07030;
  color: #fff;
}
.sponsor-plan-cta-primary:hover { background: #ff7a2f; }
.sponsor-plan-cta-outline {
  border: 2px solid #F07030;
  color: #F07030;
}
.sponsor-plan-cta-outline:hover { background: rgba(240,112,48,0.08); }
.sponsor-plan-card.featured .sponsor-plan-cta-outline {
  border-color: #F07030;
  color: #F07030;
}

/* ===== CTA ===== */
.sponsor-cta-section {
  background: #F07030;
  text-align: center;
  padding: 80px 0;
}
.sponsor-cta-section .section-title {
  color: #fff;
  margin-bottom: 16px;
}
.sponsor-cta-desc {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.8);
  line-height: 2;
  max-width: 600px;
  margin: 0 auto 40px;
}
.cta-btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: #F07030;
  padding: 18px 48px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}
.cta-btn-white:hover {
  background: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  section { padding: 72px 0; }
  .container { padding: 0 24px; }
  .value-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .plans-grid { grid-template-columns: 1fr; max-width: 440px; margin: 0 auto; }
}