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.btn.ghost{background:transparent;color:var(--muted)}.dsa-scope[data-theme=light] .demo{background:#ffffffb3}.dsa-scope[data-theme=light] .rule{background:linear-gradient(135deg,#d9770614,#ea580c0a);border-color:#d9770640}.dsa-scope[data-theme=light] .checklist li{color:#334155}.dsa-scope[data-theme=light] .blind-tree-viewport>div{background-color:#f8fafc!important;background-image:radial-gradient(rgba(0,0,0,.08) 1px,transparent 1px)!important}.dsa-scope[data-theme=light] svg path:not(.blind-edge-active){stroke:#00000029!important}.blind-problem-item{background:#0003;transition:all .2s var(--ease)}.blind-problem-item.is-checked{background:#2dd4bf0f}.dsa-scope[data-theme=light] .blind-problem-item{background:#fff;border:1px solid rgba(0,0,0,.08)!important;box-shadow:0 2px 10px #00000008}.dsa-scope[data-theme=light] .blind-problem-item:hover{border-color:#d977064d!important;box-shadow:0 4px 16px #0000000f}.dsa-scope[data-theme=light] .blind-problem-item.is-checked{background:#0d94880a;border-color:#0d948833!important}.dsa-progress-track{background:#ffffff14;border:1px solid rgba(255,255,255,.1)}.dsa-scope[data-theme=light] .dsa-progress-track{background:#00000014;border:1px solid rgba(0,0,0,.12);box-shadow:inset 0 1px 3px #00000014}.dsa-scope:before{content:"";position:fixed;inset:0;background-image:linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px);background-size:48px 48px;pointer-events:none;z-index:0;mask-image:radial-gradient(ellipse at center,black 30%,transparent 80%);-webkit-mask-image:radial-gradient(ellipse at center,black 30%,transparent 80%)}.dsa-scope:after{content:"";position:fixed;inset:0;background-image:radial-gradient(circle at 25% 30%,rgba(255,181,71,.05),transparent 35%),radial-gradient(circle at 75% 70%,rgba(45,212,191,.05),transparent 35%);pointer-events:none;z-index:0;animation:dsaBgFloat 24s ease-in-out 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.card:before{content:"";position:absolute;top:0;left:24px;right:24px;height:1px;background:linear-gradient(90deg,transparent,var(--accent),transparent);opacity:.4}.dsa-scope .card.teal:before{background:linear-gradient(90deg,transparent,var(--teal),transparent)}.dsa-scope a.card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:0 8px 30px var(--accent-glow)}.dsa-scope .card-title{font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);font-weight:600;margin-bottom:16px;display:flex;align-items:center;gap:8px;font-family:JetBrains Mono,monospace}.dsa-scope .card-title .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px var(--accent)}.dsa-scope .btn-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}.dsa-scope .btn{background:transparent;border:1px solid var(--border-strong);color:var(--fg);padding:9px 16px;border-radius:9px;font-family:Space 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infinite}.dsa-scope pre{padding:16px 18px;overflow-x:auto;font-family:JetBrains Mono,monospace;font-size:12.5px;line-height:1.75;margin:0}.dsa-scope pre code{counter-reset:codeline}.dsa-scope pre code .line{display:block;padding:1px 10px 1px 0;margin:0 -10px;border-left:3px solid transparent;white-space:pre;counter-increment:codeline}.dsa-scope pre code .line:before{content:counter(codeline);display:inline-block;min-width:20px;text-align:right;margin-right:14px;margin-left:10px;color:var(--muted);opacity:.4;user-select:none;-webkit-user-select:none}.dsa-scope pre code .line.active{background:#ffb54714;border-left-color:var(--accent)}.dsa-scope .demo{display:flex;flex-direction:column;gap:14px;padding:20px;background:#00000040;border-radius:var(--radius-md);border:1px dashed var(--border)}.dsa-scope .demo-label{font-family:JetBrains Mono,monospace;font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.1em}.dsa-scope 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