:root {
  --saikai-red: #d32f2f;
  --saikai-bg: #f7f7f7;
  --saikai-card: #ffffff;
  --saikai-text: #222;
  --saikai-muted: #666;
  --saikai-border: #e7e7e7;
}

.saikai-guide {
  background: var(--saikai-bg);
  color: var(--saikai-text);
}

.saikai-guide-hero {
  background: radial-gradient(1200px 400px at 20% 0%, rgba(211, 47, 47, 0.18), transparent 60%),
    linear-gradient(180deg, #1b1b1b, #2a2a2a);
  color: #fff;
  padding: 56px 0 40px;
}

.saikai-guide-hero__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.saikai-guide-hero__title {
  font-size: clamp(28px, 3.2vw, 40px);
  margin: 0 0 10px;
  letter-spacing: 0.02em;
}

.saikai-guide-hero__lead {
  margin: 0;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.8;
  max-width: 60ch;
}

.saikai-guide__container {
  max-width: 1100px;
  margin: -22px auto 0;
  padding: 0 20px 70px;
}

.saikai-guide__notice {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--saikai-border);
  border-radius: 14px;
  padding: 14px 16px;
  margin: 0 0 18px;
  backdrop-filter: blur(6px);
}

.saikai-guide__notice a {
  color: var(--saikai-red);
  text-decoration: none;
  font-weight: 700;
}

.saikai-guide-card {
  background: var(--saikai-card);
  border: 1px solid var(--saikai-border);
  border-radius: 16px;
  padding: 18px 18px 16px;
  margin: 0 0 14px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.04);
}

.saikai-guide-card__title {
  margin: 0 0 12px;
  font-size: 1.15rem;
  border-left: 4px solid var(--saikai-red);
  padding-left: 10px;
}

.saikai-guide-text {
  margin: 0;
  color: var(--saikai-muted);
  line-height: 1.9;
}

.saikai-guide-list {
  margin: 0;
  padding-left: 1.2em;
  color: var(--saikai-muted);
  line-height: 1.9;
}

.saikai-guide-list li {
  margin: 6px 0;
}

.saikai-guide-list strong {
  color: var(--saikai-text);
}

.saikai-guide-subcard {
  margin-top: 14px;
  background: #fbfbfb;
  border: 1px solid var(--saikai-border);
  border-radius: 14px;
  padding: 14px 14px 12px;
}

.saikai-guide-subcard__title {
  margin: 0 0 8px;
  font-size: 1rem;
}

.saikai-guide-links {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.saikai-guide-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--saikai-border);
  border-radius: 999px;
  padding: 10px 14px;
  text-decoration: none;
  color: var(--saikai-text);
  background: #fff;
  transition: transform 0.12s ease, border-color 0.12s ease;
}

.saikai-guide-link:hover {
  transform: translateY(-1px);
  border-color: rgba(211, 47, 47, 0.5);
}

.saikai-guide-cta {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.saikai-guide-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid var(--saikai-border);
  color: var(--saikai-text);
  background: #fff;
}

.saikai-guide-btn--primary {
  background: var(--saikai-red);
  color: #fff;
  border-color: rgba(211, 47, 47, 0.6);
}

.saikai-guide-btn--ghost {
  background: #fff;
}

@media (max-width: 520px) {
  .saikai-guide-cta {
    flex-direction: column;
  }

  .saikai-guide-btn {
    width: 100%;
  }
}