.rules-shell {
  padding-top: clamp(28px, 7vh, 86px);
  gap: clamp(22px, 4vw, 42px);
}

.rules-hero {
  grid-template-columns: minmax(0, 1.04fr) minmax(290px, 0.96fr);
  align-items: center;
  min-height: 430px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(116, 212, 255, 0.16), transparent 42%),
    linear-gradient(315deg, rgba(209, 79, 109, 0.13), transparent 52%),
    linear-gradient(135deg, rgba(17, 22, 31, 0.9), rgba(9, 13, 22, 0.78));
}

.rules-hero h1 {
  max-width: 780px;
  font-size: clamp(2.8rem, 6.4vw, 5.8rem);
}

.rules-hero .section-copy p:last-child {
  max-width: 740px;
  color: #dbe5f4;
  font-size: clamp(1rem, 1.6vw, 1.18rem);
}

.rules-hero-art {
  min-height: 320px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: center;
}

.rules-hero-art img {
  width: 132%;
  max-width: none;
  border: 1px solid rgba(255, 255, 255, 0.17);
  border-radius: 8px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.48);
}

.rules-hero-art img:nth-child(1) {
  transform: translateX(12%) rotate(-7deg);
}

.rules-hero-art img:nth-child(2) {
  position: relative;
  z-index: 2;
  transform: translateY(-18px) scale(1.06);
}

.rules-hero-art img:nth-child(3) {
  transform: translateX(-12%) rotate(7deg);
}

.rules-guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.rules-card {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.035)),
    rgba(10, 14, 23, 0.72);
  box-shadow: 0 22px 56px rgba(0, 0, 0, 0.26);
}

.rules-card h2 {
  font-size: clamp(1.55rem, 3vw, 2.45rem);
  line-height: 1.05;
}

.rules-card h3 {
  color: var(--text);
}

.rules-card p,
.rules-list,
.summary-grid,
.rules-mini-list {
  color: var(--muted);
  line-height: 1.58;
}

.rules-card p:last-child,
.rules-list:last-child,
.summary-grid:last-child {
  margin-bottom: 0;
}

.rules-wide,
.attack-battle-card {
  grid-column: 1 / -1;
}

.rules-mini-list,
.phase-grid,
.compare-grid,
.summary-grid {
  display: grid;
  gap: 10px;
}

.rules-mini-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.rules-mini-list span,
.phase-grid section,
.compare-grid section,
.summary-grid li {
  padding: 13px;
  border: 1px solid rgba(116, 212, 255, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
}

.rules-mini-list strong,
.rules-list strong,
.rules-card p strong {
  color: var(--text);
}

.rules-mini-list strong {
  display: block;
  margin-bottom: 4px;
}

.rules-list {
  display: grid;
  gap: 9px;
  padding-left: 1.15rem;
  margin: 0;
}

.rules-list.numbered {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  list-style-position: inside;
  padding-left: 0;
}

.phase-track {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.phase-track span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0.4rem 0.68rem;
  border: 1px solid rgba(240, 195, 106, 0.3);
  border-radius: 8px;
  color: #ffe7a8;
  background: rgba(240, 195, 106, 0.1);
  font-weight: 800;
  font-size: 0.92rem;
}

.phase-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.phase-grid p,
.compare-grid p {
  margin-bottom: 0;
}

.compare-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.rules-callout {
  padding: 14px 16px;
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  color: #eef7ff;
  background: rgba(116, 212, 255, 0.12);
  font-weight: 900;
}

.quick-summary {
  background:
    linear-gradient(135deg, rgba(116, 212, 255, 0.13), transparent 42%),
    linear-gradient(315deg, rgba(240, 195, 106, 0.13), transparent 52%),
    rgba(10, 14, 23, 0.78);
}

.summary-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding: 0;
  margin: 0;
  list-style: none;
}

@media (max-width: 980px) {
  .rules-hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .rules-hero-art {
    min-height: 250px;
    width: min(560px, 92%);
    margin: 0 auto;
  }

  .rules-guide-grid,
  .phase-grid,
  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .rules-shell {
    width: min(100vw - 22px, 1220px);
    padding-top: 72px;
  }

  .rules-hero {
    min-height: 0;
  }

  .rules-hero-art {
    min-height: 210px;
  }

  .rules-guide-grid,
  .rules-mini-list,
  .phase-grid,
  .compare-grid,
  .rules-list.numbered,
  .summary-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}