/* NavXD — Book pages (情报书目档案) · 叠加在 tool-detail.css 之上 */
.nx-tool-detail .nxbk-author{margin:-6px 0 0;font-family:var(--font-mono,monospace);font-size:12px;letter-spacing:.04em;color:var(--signal,#00e5b0);}
.nx-tool-detail .nxbk-side .nxbk-cover{position:relative;margin:-1px -1px 0;border-bottom:1px solid var(--rule,rgba(255,255,255,.06));background:radial-gradient(120% 90% at 50% 0%,rgba(0,229,176,.10),transparent 70%),#050609;padding:22px 20px;display:flex;justify-content:center;}
.nx-tool-detail .nxbk-side .nxbk-cover img{display:block;width:auto;max-width:150px;max-height:210px;border:1px solid var(--rule-strong,rgba(255,255,255,.14));box-shadow:0 1px 0 rgba(255,255,255,.06) inset,0 18px 40px -18px rgba(0,0,0,.8),0 0 0 4px rgba(0,0,0,.25);border-left:3px solid rgba(0,0,0,.55);}
.nx-tool-detail .nxbk-cover__tag{position:absolute;top:12px;left:12px;font-family:var(--font-mono,monospace);font-size:9px;letter-spacing:.14em;color:var(--signal,#00e5b0);background:rgba(0,0,0,.6);border:1px solid var(--signal,#00e5b0);padding:2px 7px;}
.nx-tool-detail .nxbk-shelf{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:1px;background:var(--rule,rgba(255,255,255,.06));border:1px solid var(--rule-strong,rgba(255,255,255,.14));}
.nx-tool-detail a.nxbk-card{display:flex;flex-direction:column;gap:0;background:var(--bg,#07080d);text-decoration:none;transition:background .18s;}
.nx-tool-detail a.nxbk-card:hover{background:var(--bg-elev,#0d1018);}
.nx-tool-detail .nxbk-card__cover{position:relative;aspect-ratio:3/4;overflow:hidden;background:radial-gradient(120% 80% at 50% 0%,rgba(91,108,255,.12),transparent 70%),#050609;display:flex;align-items:center;justify-content:center;}
.nx-tool-detail .nxbk-card__cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.nx-tool-detail a.nxbk-card:hover .nxbk-card__cover img{transform:scale(1.04);}
.nx-tool-detail .nxbk-card__cover--empty{font-family:var(--font-display,sans-serif);font-weight:800;font-size:40px;color:var(--text-3,#6b6878);}
.nx-tool-detail .nxbk-card__cover::after{content:"";position:absolute;inset:0;box-shadow:inset 3px 0 8px -4px rgba(0,0,0,.7);pointer-events:none;}
.nx-tool-detail .nxbk-card__body{padding:12px 14px 14px;border-top:1px solid var(--rule,rgba(255,255,255,.06));}
.nx-tool-detail .nxbk-card__title{font-family:var(--font-display,sans-serif);font-weight:700;font-size:14px;line-height:1.35;color:var(--text,#f2efe7);letter-spacing:-.01em;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.nx-tool-detail .nxbk-card__author{margin-top:6px;font-family:var(--font-mono,monospace);font-size:10px;letter-spacing:.04em;color:var(--text-3,#6b6878);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
@media (max-width:640px){.nx-tool-detail .nxbk-shelf{grid-template-columns:repeat(auto-fill,minmax(130px,1fr));}.nx-tool-detail .nxbk-side .nxbk-cover img{max-width:120px;}}