/* 降智率 · pelican-on-a-bicycle scale. Shares the timeline card finish. */
.nerf{margin-top:24px;border:1px solid #65726045;border-radius:18px;padding:21px 24px 18px;background:rgba(253,251,244,.84);box-shadow:inset 0 1px 0 #fffdf278,0 12px 28px #4846350c;backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px);color:#223026}
.nerf .section-head{margin-bottom:10px}
.nerf-intro{font-size:14px;line-height:1.7;color:#2d3d30;margin:0 0 10px}
.nerf-prompt{display:flex;align-items:center;gap:12px;margin:0 0 14px;padding:10px 10px 10px 14px;border:1px solid #65726045;border-radius:12px;background:#fffdf6}
.nerf-prompt p{margin:0;flex:1;min-width:0;font:13px/1.7 ui-monospace,SFMono-Regular,Menlo,monospace;color:#1f2c22;user-select:all;-webkit-user-select:all}
.nerf-prompt button{flex:none;border:0;border-radius:8px;padding:8px 14px;background:#345745;color:#fff;font:600 12px system-ui,sans-serif;cursor:pointer;min-width:64px}
.nerf-prompt button:hover{background:#2a4838}.nerf-prompt button:focus-visible{outline:2px solid #317554;outline-offset:2px}
.nerf-scale{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin:0;padding:0;list-style:none}
.nerf-level{margin:0;display:flex;flex-direction:column;border:1px solid #65726035;border-radius:14px;background:#fffdf6;overflow:hidden;transition:transform .24s ease,box-shadow .24s ease}
.nerf-level img{display:block;width:100%;height:auto;aspect-ratio:4/3;border-bottom:1px solid #65726025}
.nerf-level figcaption{padding:11px 12px 13px;display:flex;flex-direction:column;gap:6px}
.nerf-tag{display:flex;align-items:center;justify-content:space-between;gap:6px;font-size:13px;font-weight:650;color:#1f2c22}
.nerf-tag b{font:600 11px ui-monospace,SFMono-Regular,Menlo,monospace;color:#fff;background:var(--lv);border-radius:5px;padding:3px 6px;white-space:nowrap}
.nerf-level p{margin:0;font-size:12px;line-height:1.65;color:#405042}
.nerf-level small{font:11px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--lv);font-weight:600}
@media(hover:hover) and (pointer:fine){.nerf-level:hover{transform:translateY(-4px);box-shadow:0 12px 26px #35463320}}
.nerf-tools{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
#nerf-live{margin-top:16px}#nerf-live[hidden]{display:none}#nerf-live h3{font-size:14px;margin:0 0 10px}
.nerf-tool{display:flex;align-items:center;gap:10px;border:1px solid #65726035;border-radius:12px;padding:8px 10px;background:#fffdf6}
.nerf-tool img{width:64px;height:48px;border-radius:7px;flex:none}
.nerf-tool strong{display:block;font-size:13px}.nerf-tool span{display:block;font:600 18px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--lv)}
.nerf-tool a,.nerf-tool em{display:block;font-size:10px;font-style:normal;color:#4a5b4d;text-decoration:underline}
.nerf-note{font-size:11px;line-height:1.7;color:#4a5b4d;margin:14px 0 0}
.nerf-faq{margin-top:14px;border-top:1px solid #59674f30}
.nerf-faq details{border-bottom:1px solid #59674f22;padding:11px 0}
.nerf-faq summary{cursor:pointer;font-size:14px;font-weight:600;color:#223026;list-style-position:inside}
.nerf-faq summary:focus-visible{outline:2px solid #317554;outline-offset:3px;border-radius:4px}
.nerf-faq p{margin:9px 0 0;font-size:13px;line-height:1.8;color:#3a4a3d}
.nerf-faq a{text-decoration:underline}
@media(max-width:850px){.nerf-scale{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:10px;padding-bottom:6px}.nerf-scale>li{flex:0 0 38%;scroll-snap-align:start}.nerf-tools{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.nerf{padding:18px 14px 12px;border-radius:15px}.nerf-scale>li{flex-basis:62%}.nerf-tools{grid-template-columns:1fr}}