body {
    background: linear-gradient(to bottom right, #0f172a, #1e293b);
    font-family: 'Poppins', sans-serif;
    color: #e2e8f0;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* 상단 히어로 */
.rules-hero {
    padding: 4rem 1rem 4rem;
    text-align: center;
    background: radial-gradient(circle at top, rgba(0, 240, 255, 0.15), transparent);
}
.rules-title {
    font-size: 2.5rem;
    color: #00f0ff;
    text-shadow: 0 0 8px #00f0ff, 0 0 16px #00f0ff;
    margin-bottom: 0.5rem;
}
.rules-subtitle {
    font-size: 1.1rem;
    color: #94a3b8;
    margin-bottom: 2rem;
}

/* 메뉴 카드 */
.rules-container {
    padding: 0 2rem 4rem;
    max-width: 1000px;
    margin: 3rem auto 0;
}
.rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}
.rules-card {
    background-color: rgba(30, 41, 59, 0.9);
    color: #00f0ff;
    padding: 1.5rem;
    text-decoration: none;
    font-size: 1.1rem;
    border-radius: 12px;
    transition: transform 0.2s, background-color 0.2s;
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.1);
    backdrop-filter: blur(4px);
}
.rules-card:hover {
    background-color: rgba(51, 65, 85, 0.9);
    transform: translateY(-4px);
}

/* 버튼 */
.back-home-section {
    margin-top: 3rem;
    text-align: center;
}
.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.2s, box-shadow 0.2s;
}
.neon-home-btn {
    background-color: #00f0ff;
    color: #0f172a;
    box-shadow: 0 0 8px #00f0ff;
}
.neon-home-btn:hover {
    background-color: #38bdf8;
    box-shadow: 0 0 12px #38bdf8;
}

/* 반응형 */
@media (max-width: 768px) {
    .rules-title { font-size: 2rem; }
    .rules-subtitle { font-size: 1rem; }
}
/* 아코디언 FAQ 스타일 */
.rules-faq {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    gap: 1rem;
}

.faq {
    background: rgba(30,41,59,0.9);
    border-radius: 12px;
    padding: 0.6rem 1rem;
    box-shadow: 0 0 12px rgba(0,240,255,0.08);
    border: 1px solid rgba(0,240,255,0.2);
}

.faq > summary {
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    color: #00f0ff;
    padding: .4rem 0;
}

.faq[open] {
    background: rgba(51,65,85,0.9);
    box-shadow: 0 0 16px rgba(0,240,255,0.15);
}

.faq-content {
    margin-top: .5rem;
    color: #e2e8f0;
    line-height: 1.6;
}
/* ------- 공격 페이지 전용 가독성 보강 ------- */

/* 크럼브 */
.crumbs {
    max-width: 800px; margin: 0 auto 1rem; padding: 0 .2rem;
    color: #94a3b8; font-size: .95rem;
}
.crumb { color: #94a3b8; text-decoration: none; }
.crumb:hover { color: #cbd5e1; }
.slash { margin: 0 .35rem; }
.crumb.current { color: #e2e8f0; }

/* 인라인 팁 */
.inline-tips {
    max-width: 800px; margin: 0 auto 1rem; padding: .6rem .8rem;
    background: rgba(148,163,184,0.08);
    border: 1px dashed rgba(0,240,255,0.25);
    border-radius: 10px;
}
.badge {
    display: inline-block; padding: .1rem .5rem; border-radius: 999px;
    background: #00f0ff; color: #0f172a; font-weight: 700; font-size: .75rem;
    margin-right: .35rem;
}
.badge.warn { background: #f59e0b; color: #0f172a; }

/* 리스트(가독성) */
.factlist { margin: .4rem 0 .6rem 1.1rem; line-height: 1.65; }

/* 콜아웃 박스 */
.callout {
    margin-top: .6rem; padding: .7rem .8rem; border-radius: 10px;
    background: rgba(148,163,184,0.08); border: 1px solid rgba(0,240,255,0.18);
}
.callout.warn { border-color: rgba(245,158,11,0.6); box-shadow: 0 0 10px rgba(245,158,11,0.12) inset; }
.callout.kbo  { border-color: rgba(0,240,255,0.6); box-shadow: 0 0 10px rgba(0,240,255,0.12) inset; }

/* details 공통(이미 quickstart에서 썼다면 생략 가능) */
.rules-faq { max-width: 800px; margin: 0 auto; display: grid; gap: 1rem; }
.faq { background: rgba(30,41,59,0.9); border-radius: 12px; padding: 0.6rem 1rem;
    box-shadow: 0 0 12px rgba(0,240,255,0.08); border: 1px solid rgba(0,240,255,0.2); }
.faq > summary { font-size: 1.05rem; font-weight: 700; cursor: pointer; list-style: none;
    color: #00f0ff; padding: .45rem 0; }
.faq[open] { background: rgba(51,65,85,0.9); box-shadow: 0 0 16px rgba(0,240,255,0.15); }
.faq-content { margin-top: .45rem; color: #e2e8f0; line-height: 1.7; }
.recommend-box {
    background-color: rgba(255,255,255,0.05);
    border-left: 4px solid #00f0ff;
    padding: 1rem;
    margin: 2rem auto;
    max-width: 600px;
    color: #cbd5e1;
}