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td{position:relative;width:48px;height:44px;text-align:center;vertical-align:middle;border-radius:8px;background:var(--lp-card-pad);box-shadow:inset 0 0 0 2px var(--gc,transparent),inset 0 0 0 4px var(--gc2,transparent)}.bl-kmap-table td[class*=bl-g]{background:color-mix(in srgb,var(--gc) 16%,var(--lp-card))}.bl-kmap-v{font-size:16px;font-weight:700}.bl-kmap-table td[data-v="1"] .bl-kmap-v{color:var(--lp-text)}.bl-kmap-table td[data-v="0"] .bl-kmap-v{color:var(--lp-muted);font-weight:500}.bl-kmap-table td[data-v=x] .bl-kmap-v{color:var(--lp-text-3);font-style:italic}.bl-kmap-m{left:5px;top:3px;font-size:9.5px}.bl-kmap-m,.bl-kmap-more{position:absolute;color:var(--lp-text-3)}.bl-kmap-more{right:5px;bottom:3px;font-size:9px}.bl-g0{--gc:var(--bl-g0)}.bl-g1{--gc:var(--bl-g1)}.bl-g2{--gc:var(--bl-g2)}.bl-g3{--gc:var(--bl-g3)}.bl-g4{--gc:var(--bl-g4)}.bl-g5{--gc:var(--bl-g5)}.bl-g2-0{--gc2:var(--bl-g0)}.bl-g2-1{--gc2:var(--bl-g1)}.bl-g2-2{--gc2:var(--bl-g2)}.bl-g2-3{--gc2:var(--bl-g3)}.bl-g2-4{--gc2:var(--bl-g4)}.bl-g2-5{--gc2:var(--bl-g5)}.bl-kmap-groups{margin:0!important;padding:26px 0 0!important;list-style:none!important;display:grid;gap:8px}.bl-kmap-groups li{display:flex;align-items:center;gap:10px;margin:0!important;padding:0!important;font-size:13.5px}.bl-kmap-swatch{width:14px;height:14px;border-radius:4px;background:color-mix(in srgb,var(--gc) 16%,var(--lp-card));box-shadow:inset 0 0 0 2px var(--gc)}.bl-kmap-cells{font-family:var(--mono);font-size:12.5px;color:var(--lp-text-3)}.bl-kmap-result{margin:14px 0 0!important;text-align:center}.bl-problem{position:relative;display:flex;align-items:center;gap:16px;margin:0 0 24px;padding:16px 18px;border-radius:14px;background:var(--lp-card);box-shadow:0 0 0 1px var(--lp-card-ring),var(--lp-card-shadow);transition:box-shadow .18s,transform .18s}.bl-problem:hover{box-shadow:0 0 0 1px var(--lp-card-ring-lit),var(--lp-card-shadow-lit);transform:translateY(-1px)}.bl-problem-icon{width:42px;height:42px;border-radius:10px;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:var(--lp-kicker-ink);background:var(--lp-card-pad)}.bl-problem-body{min-width:0;flex:1}.bl-problem-body p{margin:0!important}.bl-problem-kicker{font-size:12.5px;color:var(--lp-text-3);line-height:1.4}.bl-problem-title{font-size:16.5px;font-weight:650;line-height:1.35;color:var(--lp-text)}.bl-problem-title a{color:inherit;text-decoration:none}.bl-problem-title a:after{content:"";position:absolute;inset:0;border-radius:14px}.bl-problem-meta{display:flex;flex-wrap:wrap;align-items:center;gap:4px 12px;margin-top:4px!important;font-size:12.5px;line-height:1.5;color:var(--lp-text-3)}.bl-free{color:var(--color-ok);font-weight:600}.bl-diff{display:inline-flex;align-items:flex-end;gap:2px;color:var(--lp-text-2);font-weight:600}.bl-diff i{display:inline-block;width:3px;border-radius:1px;background:var(--lp-dim)}.bl-diff i:first-child{height:6px}.bl-diff i:nth-child(2){height:9px}.bl-diff i:nth-child(3){height:12px;margin-right:6px}.bl-diff[data-d=EASY] i:first-child,.bl-diff[data-d=HARD] i,.bl-diff[data-d=MEDIUM] i:nth-child(-n+2){background:var(--lp-kicker-ink)}.bl-problem-go{flex-shrink:0;display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:999px;font-size:13.5px;font-weight:600;text-decoration:none;color:#fff;background:#5b4fe8}@media (max-width:560px){.bl-problem-go{display:none}}.bl-file{display:flex;align-items:center;gap:14px;margin:0 0 12px;padding:12px 16px;border-radius:12px;text-decoration:none;color:var(--lp-text);box-shadow:inset 0 0 0 1px var(--lp-border);transition:box-shadow .15s,background .15s}.bl-file:hover{box-shadow:inset 0 0 0 1px var(--lp-card-ring-lit);background:color-mix(in srgb,var(--bl-accent) 4%,transparent)}.bl-file-icon{width:36px;height:36px;border-radius:9px;flex-shrink:0;display:flex;align-items:center;justify-content:center;color:var(--lp-kicker-ink);background:var(--lp-card-pad)}.bl-file-body{display:flex;flex-direction:column;min-width:0;flex:1}.bl-file-name{font-size:15px;font-weight:600;line-height:1.35;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.bl-file-meta{font-family:var(--lp-mono);font-size:12px;color:var(--lp-text-3)}.bl-file-go{display:inline-flex;align-items:center;gap:6px;flex-shrink:0;font-size:13px;font-weight:600;color:var(--lp-kicker-ink)}@media (max-width:480px){.bl-file-go span{display:none}}.bl-section-h{margin:0 0 16px;font-size:1.35rem;font-weight:700;letter-spacing:-.02em;color:var(--lp-text);scroll-margin-top:96px}.bl-faq-item+.bl-faq-item{margin-top:20px}.bl-faq-item h3{margin:0 0 6px;font-size:1.05rem;font-weight:650;line-height:1.4;color:var(--lp-text)}.bl-faq-item p{margin:0;font-size:16px;line-height:1.7;color:var(--lp-text-2)}.bl-faq-item code,.bl-takeaways code{font-family:var(--mono);font-size:.86em;padding:1px 5px;border-radius:5px;color:var(--code-chip-fg);background:var(--code-chip-bg)}.bl-practice{margin:0;padding:0;list-style:none}.bl-practice li{border-bottom:1px solid var(--lp-border-soft)}.bl-practice li:last-child{border-bottom:0}.bl-practice a{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 2px;text-decoration:none;color:var(--lp-text)}.bl-practice a:hover .bl-practice-title{color:var(--lp-kicker-ink)}.bl-practice-title{font-size:15.5px;font-weight:600;transition:color .15s}.bl-practice-meta{display:inline-flex;align-items:center;gap:12px;font-size:12.5px;color:var(--lp-text-3);white-space:nowrap}.bl-tags{display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none}.bl-tags li{padding:4px 10px;border-radius:7px;font-family:var(--lp-mono);font-size:11.5px;line-height:1.4;color:var(--lp-kicker-ink);background:var(--lp-card-pad)}.bl-authorbox{display:flex;gap:16px;align-items:flex-start;padding:20px 22px;border-radius:14px;box-shadow:inset 0 0 0 1px var(--lp-border)}.bl-authorbox .bl-avatar{width:52px;height:52px;font-size:18px}.bl-authorbox-name{margin:0;font-size:16px;font-weight:650;color:var(--lp-text)}.bl-authorbox-name a{color:inherit;text-decoration:none}.bl-authorbox-name a:hover{color:var(--lp-kicker-ink)}.bl-authorbox-role{margin:2px 0 0;font-size:13.5px;color:var(--lp-text-3)}.bl-authorbox-bio{margin:10px 0 0;font-size:15px;line-height:1.65;color:var(--lp-text-2)}.bl-links{display:flex;flex-wrap:wrap;gap:6px 14px;margin:10px 0 0;padding:0;list-style:none}.bl-links a{display:inline-flex;align-items:center;gap:5px;font-size:13px;color:var(--lp-kicker-ink);text-decoration:none}.bl-links a:hover{text-decoration:underline}.bl-more{max-width:1120px;margin:72px auto 0}.bl-more-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin:0 0 18px}.bl-more-head h2{margin:0;font-size:1.5rem;font-weight:700;letter-spacing:-.02em;color:var(--lp-text)}.bl-more-head a{font-size:14px;color:var(--lp-kicker-ink);text-decoration:none}.bl-more-head a:hover{text-decoration:underline}.bl-cta{max-width:1120px;margin:72px auto 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px 32px;padding:clamp(24px,4vw,40px);border-radius:18px;background:var(--lp-card-pad)}.bl-cta h2{margin:0;font-size:clamp(1.35rem,2.4vw,1.75rem);font-weight:700;letter-spacing:-.025em;color:var(--lp-text)}.bl-cta p{margin:8px 0 0;max-width:560px;font-size:15.5px;line-height:1.6;color:var(--lp-text-2)}.bl-cta-actions{display:flex;flex-wrap:wrap;gap:10px}.bl-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border:0;border-radius:999px;font:inherit;font-size:.9rem;font-weight:600;text-decoration:none;color:#fff;background:#5b4fe8;box-shadow:0 2px 10px rgba(91,79,232,.28);transition:box-shadow .18s,transform .18s,background .18s}.bl-btn:hover{background:#4a3ed6;transform:translateY(-1px);box-shadow:0 6px 18px rgba(91,79,232,.42)}.bl-btn-quiet{color:var(--lp-text);background:var(--lp-card);box-shadow:0 0 0 1px var(--lp-card-ring)}.bl-btn-quiet:hover{background:var(--lp-card);color:var(--lp-kicker-ink);box-shadow:0 0 0 1px var(--lp-card-ring-lit)}.bl-profile{display:flex;gap:22px;align-items:flex-start;max-width:760px;margin:0 0 40px}.bl-profile .bl-avatar{width:88px;height:88px;font-size:30px}.bl-profile .lp-h2{font-size:clamp(1.9rem,3.4vw,2.6rem)}.bl-profile-role{margin:8px 0 0}.bl-profile-bio,.bl-profile-role{font-size:16px;color:var(--lp-text-2)}.bl-profile-bio{margin:14px 0 0;line-height:1.7;white-space:pre-line}.bl-profile .bl-tags{margin-top:14px}@media (max-width:900px){.bl-page{padding-top:96px}}@media (max-width:640px){.bl-prose{font-size:16px}.bl-prose h2{font-size:1.4rem;margin-top:40px}.bl-prose h3{font-size:1.15rem}.bl-anchor{display:none}.bl-code pre{font-size:12.5px}.bl-numbered .bl-ln:before{width:2.6em;padding-right:.9em}.bl-ln{padding:0 14px}.bl-sheet{border-radius:14px}.bl-profile{flex-direction:column;gap:14px}.bl-kmap-table td{width:40px;height:38px}}