:root {
  --join-pink: #e9588d;
  --join-pink-dark: #c8386f;
  --join-pink-soft: #fff4f8;
  --join-navy: #173c61;
  --join-blue: #1199c4;
  --join-line: #06c755; /* LINE Green */
  --join-line-hover: #05b04b;
  --font-serif: 'Noto Serif JP', 'Yu Mincho', serif;
  --font-sans: 'M PLUS Rounded 1c', 'BIZ UDPGothic', sans-serif;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-pill: 9999px;
  --shadow-lg: 0 12px 36px rgba(233, 88, 141, 0.18);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  background: linear-gradient(135deg, #fff7fa 0%, #f0f8fc 100%);
  color: var(--join-navy);
  line-height: 1.8;
  overflow-x: hidden;
}

.join-header {
  height: 70px;
  padding: 0 24px;
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.join-logo {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  text-decoration: none;
  color: var(--join-navy);
  display: flex;
  align-items: center;
  gap: 8px;
}
.join-logo span { color: var(--join-pink); }

.join-header-link {
  font-size: 13px;
  font-weight: 700;
  color: var(--join-navy);
  text-decoration: none;
}

/* Hero */
.join-hero {
  max-width: 960px;
  margin: 20px auto 50px;
  padding: 40px 24px;
  text-align: center;
}

.join-eyebrow {
  display: inline-block;
  background: #ffe3ee;
  color: var(--join-pink-dark);
  font-size: 13px;
  font-weight: 800;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

.join-hero-title {
  font-family: var(--font-serif);
  font-size: clamp(32px, 5.5vw, 56px);
  line-height: 1.35;
  margin-bottom: 20px;
  color: var(--join-navy);
}
.join-hero-title mark {
  background: linear-gradient(transparent 60%, #ffd0e3 60%);
  color: inherit;
}

.join-hero-lead {
  font-size: clamp(15px, 2vw, 18px);
  color: #4a637d;
  max-width: 640px;
  margin: 0 auto 36px;
}

/* Hero Visual Banner */
.join-characters-banner {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 16px;
  margin-bottom: 40px;
}
.banner-char {
  max-height: 260px;
  object-fit: contain;
  filter: drop-shadow(0 8px 16px rgba(23, 60, 97, 0.15));
  transition: transform 0.3s;
}
.banner-char:hover {
  transform: translateY(-8px) scale(1.03);
}

/* CTA Box */
.join-cta-box {
  background: #fff;
  border: 2px solid #ffd0e3;
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  max-width: 580px;
  margin: 0 auto;
  box-shadow: var(--shadow-lg);
}

.join-cta-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--join-navy);
  margin-bottom: 8px;
}
.join-cta-desc {
  font-size: 13px;
  color: #6d849e;
  margin-bottom: 24px;
}

.btn-line-register {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--join-line);
  color: #fff;
  text-decoration: none;
  font-size: 17px;
  font-weight: 800;
  padding: 16px 28px;
  border-radius: var(--radius-pill);
  box-shadow: 0 6px 20px rgba(6, 199, 85, 0.35);
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  width: 100%;
}
.btn-line-register:hover {
  background: var(--join-line-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(6, 199, 85, 0.45);
}

.line-icon-badge {
  width: 28px;
  height: 28px;
  background: #fff;
  color: var(--join-line);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 900;
  font-size: 15px;
}

.join-sub-link {
  display: block;
  margin-top: 14px;
  font-size: 12px;
  color: #7b94ad;
  text-decoration: underline;
  cursor: pointer;
}

/* 3 Benefits */
.join-benefits {
  max-width: 960px;
  margin: 60px auto;
  padding: 0 24px;
}
.benefits-title {
  text-align: center;
  font-family: var(--font-serif);
  font-size: 28px;
  margin-bottom: 36px;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.benefit-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 30px 24px;
  box-shadow: 0 4px 16px rgba(23, 60, 97, 0.06);
  border: 1px solid #e2edf2;
  text-align: center;
}
.benefit-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #fff0f6;
  color: var(--join-pink);
  font-size: 26px;
  display: grid;
  place-items: center;
  margin: 0 auto 16px;
}
.benefit-card h3 {
  font-size: 18px;
  margin-bottom: 12px;
}
.benefit-card p {
  font-size: 14px;
  color: #5d758f;
  line-height: 1.7;
}

/* Membership Plans */
.join-plans {
  max-width: 860px;
  margin: 60px auto;
  padding: 0 24px;
}
.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}
.plan-item {
  background: #fff;
  border: 1px solid #dbe6ec;
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
}
.plan-item.highlight {
  border: 2px solid var(--join-pink);
  background: #fffdfd;
  position: relative;
}
.plan-badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--join-pink);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
}

.plan-item h4 {
  font-size: 18px;
  margin-bottom: 8px;
}
.plan-price {
  font-size: 26px;
  font-weight: 800;
  color: var(--join-navy);
  margin-bottom: 16px;
}
.plan-price small {
  font-size: 12px;
  font-weight: normal;
  color: #7289a0;
}
.plan-features {
  list-style: none;
  font-size: 13px;
  color: #556f8a;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
}
.plan-features li::before {
  content: "✔ ";
  color: var(--join-pink);
  font-weight: 800;
}

/* Footer */
.join-footer {
  text-align: center;
  padding: 40px 24px;
  border-top: 1px solid #e1e9ee;
  margin-top: 60px;
  font-size: 13px;
  color: #7990a6;
}
.join-footer a {
  color: var(--join-navy);
  margin: 0 10px;
  text-decoration: none;
}
.join-footer a:hover {
  text-decoration: underline;
}