/* ACADEMIA sub — 풀와이드 히어로 / 블러 빵메뉴 / 콘텐츠 (v1.1.0 시안) */
.aca-sub-hero{position:relative;display:flex;min-height:520px;background:#26272b center/cover no-repeat;color:#fff;overflow:visible}
.aca-sub-hero-veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,10,16,.45),rgba(8,10,16,.12) 45%,rgba(8,10,16,.38));pointer-events:none}
.aca-sub-hero-inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;justify-content:center;width:100%;max-width:var(--aca-inner-w);margin:0 auto;padding:calc(var(--aca-header-h) + 56px) 24px 72px;text-align:center}
.aca-sub-hero-title{margin:0;font-size:clamp(34px,4.6vw,56px);font-weight:800;letter-spacing:-.02em;text-shadow:0 2px 24px rgba(0,0,0,.25)}
.aca-sub-hero-en{margin:14px 0 0;font-size:17px;font-weight:500;color:rgba(255,255,255,.78)}
/* ===== 빵메뉴 (홈 원형 + 블러 필 드롭다운, 클릭 펼침) ===== */
.aca-crumb{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:14px;margin-top:48px}
.aca-crumb-home{display:inline-flex;align-items:center;justify-content:center;flex:none;width:52px;height:52px;border-radius:50%;background:var(--aca-primary);color:#fff;text-decoration:none;transition:transform .2s}
.aca-crumb-home:hover,.aca-crumb-home:focus{transform:translateY(-2px)}
.aca-crumb-dd{position:relative}
.aca-crumb-dd summary{display:flex;align-items:center;justify-content:space-between;gap:18px;min-width:250px;padding:15px 24px;border-radius:999px;border:1px solid rgba(255,255,255,.16);background:rgba(14,16,22,.36);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);color:#fff;font-size:15px;font-weight:600;cursor:pointer;list-style:none;transition:background-color .2s}
.aca-crumb-dd summary:hover{background:rgba(14,16,22,.55)}
.aca-crumb-dd summary::-webkit-details-marker{display:none}
.aca-crumb-dd .aca-ico-chev{flex:none;transition:transform .2s}
.aca-crumb-dd[open] summary .aca-ico-chev{transform:rotate(180deg)}
.aca-crumb-panel{position:absolute;left:0;top:calc(100% + 10px);z-index:40;min-width:100%;width:max-content;max-width:340px;margin:0;padding:14px 0;list-style:none;background:#fff;border-radius:18px;box-shadow:0 28px 70px -22px rgba(0,0,0,.4);max-height:340px;overflow:auto;text-align:left}
.aca-crumb-panel a{display:block;padding:10px 28px;font-size:15px;color:var(--aca-ink);text-decoration:none}
.aca-crumb-panel a:hover,.aca-crumb-panel a:focus{color:var(--aca-nav-hover)}
.aca-crumb-panel li.aca-current a{color:var(--aca-primary);font-weight:700}
/* 콘텐츠 */
.aca-sub-content{max-width:var(--aca-inner-w);margin:0 auto;padding:64px 24px 96px}
.aca-sub-content h1,.aca-sub-content h2{letter-spacing:-.01em}
#ctt_con{line-height:1.75}
/* 반응형 */
@media (max-width:1024px){
.aca-sub-hero{min-height:380px}
.aca-sub-hero-inner{padding:calc(64px + 40px) 20px 48px}
.aca-crumb{margin-top:32px}
.aca-crumb-dd summary{min-width:0;padding:12px 18px;font-size:14px}
.aca-crumb-home{width:44px;height:44px}
.aca-sub-content{padding:40px 20px 24px}
}
@media (prefers-reduced-motion:reduce){
.aca-crumb-home,.aca-crumb-dd summary,.aca-crumb-dd .aca-ico-chev{transition:none!important}
}
/* backdrop-filter 미지원 브라우저 폴백 */
@supports not (backdrop-filter:blur(1px)){
.aca-crumb-dd summary{background:rgba(14,16,22,.7)}
}