.ikfu-wrap{max-width:980px;margin:16px auto;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial;line-height:1.5;padding:0 10px;}
.ikfu-hero{border:1px solid rgba(0,0,0,.12);border-radius:18px;padding:18px;background:#fff;box-shadow:0 6px 18px rgba(0,0,0,.06);}
.ikfu-badge{display:inline-block;font-weight:800;font-size:12px;letter-spacing:.08em;text-transform:uppercase;background:#111;color:#fff;padding:6px 10px;border-radius:999px;}
.ikfu-title{margin:10px 0 0;font-size:28px;line-height:1.15;}
.ikfu-sub{margin:8px 0 0;opacity:.82;max-width:80ch;}

.ikfu-group{margin:18px 0 8px;font-size:16px;font-weight:900;opacity:.85;}
.ikfu-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px;}
.ikfu-tile{display:block;border:1px solid rgba(0,0,0,.12);border-radius:16px;padding:14px;text-decoration:none;color:inherit;background:#fafafa;}
.ikfu-tile:hover{background:#f3f3f3;}
.ikfu-tile-title{font-weight:900;font-size:18px;margin-bottom:6px;}
.ikfu-tile-verse{font-style:italic;opacity:.8;font-size:13px;margin-bottom:6px;}
.ikfu-tile-explain{opacity:.8;font-size:14px;line-height:1.35;}

.ikfu-header{border:1px solid rgba(0,0,0,.12);border-radius:18px;padding:18px;background:#fff;box-shadow:0 6px 18px rgba(0,0,0,.06);}
.ikfu-back{display:inline-block;text-decoration:none;font-weight:900;margin-bottom:6px;}
.ikfu-quote{margin:10px 0 0;font-style:italic;opacity:.86;}

.ikfu-passage{margin-top:14px;border-top:1px solid rgba(0,0,0,.08);padding-top:14px;}
.ikfu-smallcap{font-size:12px;letter-spacing:.08em;text-transform:uppercase;opacity:.75;font-weight:900;margin-bottom:6px;}
.ikfu-passage-text{white-space:pre-wrap;border:1px solid rgba(0,0,0,.10);border-radius:14px;padding:12px;background:#fafafa;}
.ikfu-passage-ref{margin-top:8px;opacity:.75;font-weight:800;font-size:13px;}

.ikfu-steps{margin-top:14px;display:flex;flex-direction:column;gap:10px;}
.ikfu-step{border:1px solid rgba(0,0,0,.12);border-radius:16px;overflow:hidden;background:#fff;}
.ikfu-step-head{width:100%;display:flex;align-items:center;gap:10px;padding:12px;border:0;background:#f7f7f7;cursor:pointer;text-align:left;}
.ikfu-step-num{width:26px;height:26px;border-radius:10px;background:#111;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;flex:0 0 auto;}
.ikfu-step-title{font-weight:900;flex:1 1 auto;}
.ikfu-step-chev{opacity:.7;}
.ikfu-step.is-open .ikfu-step-chev{transform:rotate(180deg);}
.ikfu-step-body{padding:12px;}