/* ===============================
   PrimeField – Practice Ball Brand
   =============================== */

body {
  margin: 0;
  padding: 0;
  background: #f7f9fc;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #1f2937;
  line-height: 1.7;
}

/* HEADER */
header {
  background: #003a7c;
  color: #fff;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header .logo {
  font-size: 22px;
  font-weight: 700;
}

header nav a {
  color: #fff;
  margin-left: 20px;
  text-decoration: none;
  font-size: 13px;
  opacity: 0.9;
}

header nav a:hover {
  opacity: 1;
}

/* HERO */
.hero {
  max-width: 960px;
  margin: 32px auto;
  background: #ffffff;
  padding: 40px 32px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.hero-tag {
  font-size: 12px;
  color: #003a7c;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.hero-title {
  font-size: 32px;
  font-weight: 800;
  margin: 0;
  color: #003a7c;
}

.hero-sub {
  font-size: 16px;
  margin-top: 12px;
  font-weight: 600;
}

/* SECTION */
section {
  max-width: 960px;
  margin: 40px auto;
  padding: 0 16px;
}

h2 {
  font-size: 20px;
  font-weight: 700;
  border-left: 4px solid #003a7c;
  padding-left: 10px;
  margin-bottom: 16px;
}

/* LINEUP */
.lineup-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.lineup-card {
  flex: 1 1 calc(33% - 24px);
  background: #ffffff;
  border-radius: 12px;
  padding: 20px;
  text-decoration: none;
  color: #1f2937;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
  transition: all 0.2s ease;
}

.lineup-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}

.lineup-title {
  font-size: 18px;
  font-weight: 700;
  color: #003a7c;
  margin-bottom: 4px;
}

.lineup-sub {
  font-size: 12px;
  opacity: 0.7;
  margin-bottom: 12px;
}

.lineup-card p {
  font-size: 14px;
  margin: 0;
}

/* TECHNOLOGY LIST */
.tech-list {
  padding-left: 20px;
}

.tech-list li {
  margin-bottom: 8px;
  font-size: 14px;
}

/* BRAND LINK CARD（Defender へのリンク） */
.brand-link-card {
  display: block;
  background: #ffffff;
  border-radius: 12px;
  padding: 20px;
  text-decoration: none;
  color: #1f2937;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
  border-left: 5px solid #003a7c;
  transition: all 0.2s ease;
  margin: 24px 0;
}

.brand-link-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}

.brand-link-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
  color: #003a7c;
}

.brand-link-sub {
  font-size: 12px;
  opacity: 0.7;
  margin-bottom: 12px;
}

.brand-link-card p {
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 20px;
  font-size: 12px;
  color: #6b7280;
}