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var(--fst-line)}.fst-stages>li:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.fst-stage-head{display:flex;align-items:center;gap:11px;margin-bottom:10px}.fst-stage-head>span{width:27px;height:27px;flex-shrink:0;border-radius:50%;background:var(--fst-ink);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800}.fst-stage-head h3{margin:0;font-size:17px;font-weight:800;color:var(--fst-ink);line-height:1.35}.fst-stage-explain{margin:0;font-size:15px;line-height:1.72;color:var(--fst-body)}.fst-stage-result{margin:12px 0 0;font-size:14px;line-height:1.6;color:#14532d;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:9px;padding:10px 13px}.fst-stage-result strong{font-weight:800}.fst-line-notes{margin-top:30px}.fst-line-notes dl{margin:14px 0 0;display:grid;gap:9px}.fst-line-notes dl>div{display:grid;grid-template-columns:minmax(130px,auto) 1fr;gap:14px;align-items:start;padding:11px 14px;background:var(--fst-soft);border:1px solid var(--fst-line);border-radius:10px}.fst-line-notes dt code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px;font-weight:700;color:var(--fst-brand-dark);background:#fff;border:1px solid #fed7aa;border-radius:6px;padding:3px 7px;display:inline-block;word-break:break-word}.fst-line-notes dd{margin:0;font-size:14.5px;line-height:1.6;color:var(--fst-body)}.fst-drills{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:16px}.fst-drills>li{background:var(--fst-surface);border:1px solid var(--fst-line);border-radius:14px;padding:18px 20px;box-shadow:0 1px 3px #0000000a}.fst-drill-head{display:flex;gap:12px;align-items:flex-start}.fst-drill-head>span{width:26px;height:26px;flex-shrink:0;border-radius:50%;background:var(--fst-brand-tint);color:var(--fst-brand-dark);border:1px solid #fed7aa;display:flex;align-items:center;justify-content:center;font-size:12.5px;font-weight:800}.fst-drill-head p{margin:2px 0 0;font-size:15.5px;line-height:1.68;color:var(--fst-ink);font-weight:600}.fst-drill-expected{display:flex;align-items:flex-start;gap:7px;margin:13px 0 0;font-size:14px;line-height:1.6;color:#14532d;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:9px;padding:10px 13px}.fst-drill-expected svg{flex-shrink:0;margin-top:2px}.fst-drill-help{margin-top:10px}.fst-drill-help p{margin:10px 0 0;font-size:14.5px;line-height:1.68;color:var(--fst-body)}.fst-failures{margin-top:30px}.fst-failure-list{display:grid;gap:13px;margin-top:14px}.fst-failure-list article{background:var(--fst-surface);border:1px solid var(--fst-line);border-left:3px solid #f87171;border-radius:12px;padding:15px 17px}.fst-failure-list h4{display:flex;align-items:center;gap:7px;margin:0 0 9px;font-size:15px;font-weight:800;color:var(--fst-ink);line-height:1.45}.fst-failure-list h4 svg{color:#ef4444;flex-shrink:0}.fst-failure-message{margin:0 0 10px;padding:9px 12px;border-radius:8px;background:#1d2026;overflow-x:auto}.fst-failure-message code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px;color:#fca5a5;white-space:pre-wrap}.fst-failure-list p{margin:0 0 7px;font-size:14.5px;line-height:1.65;color:var(--fst-body)}.fst-failure-list p:last-child{margin-bottom:0}.fst-failure-list strong{color:var(--fst-ink);font-weight:800}.fst-failure-fix{color:#14532d!important}.fst-failure-fix strong{color:#16a34a}.fst-recap{margin-top:30px}.fst-recap ul{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:8px}.fst-recap li{display:flex;gap:10px;align-items:flex-start;background:var(--fst-soft);border:1px solid var(--fst-line);border-radius:10px;padding:11px 14px;font-size:14.5px;line-height:1.62;color:var(--fst-body)}.fst-recap li svg{color:var(--fst-brand);flex-shrink:0;margin-top:3px}@media(max-width:640px){.fst-section h3{font-size:17.5px}.fst-section p,.fst-stage-explain{font-size:15px}.fst-line-notes dl>div{grid-template-columns:1fr;gap:7px}.fst-code-gutter{display:none}.fst-code pre{padding:13px 14px}.fst-drills>li{padding:15px 16px}}