/* 餐廳鼓風機檢修拆頁：入口情境卡、子頁導覽、來源摺疊（2026-10-15 助手N） */
.bs-start{margin:2rem 0;padding:clamp(16px,3vw,28px);border-radius:20px;background:#fff;border:1px solid #d5e1e8;box-shadow:0 14px 40px #0b355012}
.bs-start h2{margin:.2rem 0 .4rem;color:#10335e}.bs-lead{margin:0 0 14px;color:#4b5d6e}
.bs-cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.bs-card{display:flex;flex-direction:column;gap:6px;padding:16px;border-radius:14px;border:1px solid #cfdde6;background:linear-gradient(160deg,#f7fbfd,#eef5f8);color:#10335e;text-decoration:none;min-height:150px}
.bs-card:hover{border-color:#e67525;box-shadow:0 8px 22px #e6752522}.bs-card strong{font-size:1.08rem}.bs-card span{color:#3f5262;font-size:.94rem;line-height:1.6}.bs-card em{margin-top:auto;font-style:normal;font-weight:800;color:#e67525}
.bs-subnav{display:flex;flex-wrap:wrap;gap:8px;margin:1rem 0 1.5rem}.bs-subnav a{padding:8px 14px;border-radius:999px;border:1px solid #c5d6e0;background:#fff;color:#10335e;font-weight:700;text-decoration:none;font-size:.95rem}
.bs-subnav a[aria-current="page"]{background:#10335e;border-color:#10335e;color:#fff}
.bs-fold{margin:2rem 0;border-radius:16px;border:1px solid #d5e1e8;background:#fff}.bs-fold>summary{cursor:pointer;padding:16px 20px;font-weight:800;color:#10335e;font-size:1.05rem}.bs-fold[open]>summary{border-bottom:1px solid #e3ebf0}
.bs-h1{margin:.4rem 0 1.2rem;color:#10335e;font-size:clamp(1.45rem,3.2vw,2.15rem);line-height:1.35}
.bs-back{margin:2rem 0}.bs-back a{font-weight:800;color:#10335e}
@media(max-width:900px){.bs-cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:520px){.bs-cards{grid-template-columns:1fr}.bs-card{min-height:0}.bs-subnav{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px}.bs-subnav a{white-space:nowrap;flex:0 0 auto}}