@import "https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;600;800&family=DM+Mono:wght@500&display=swap";:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--social-bg:#f4f3ec80;--shadow:#0000001a 0 10px 15px -3px, #0000000d 0 4px 6px -2px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}@media (width<=1024px){:root{font-size:16px}}@media (prefers-color-scheme:dark){:root{--text:#9ca3af;--text-h:#f3f4f6;--bg:#16171d;--border:#2e303a;--code-bg:#1f2028;--accent:#c084fc;--accent-bg:#c084fc26;--accent-border:#c084fc80;--social-bg:#2f303a80;--shadow:#0006 0 10px 15px -3px, #00000040 0 4px 6px -2px}#social .button-icon{filter:invert()brightness(2)}}body{margin:0}#root{text-align:center;border-inline:1px solid var(--border);box-sizing:border-box;flex-direction:column;width:1126px;max-width:100%;min-height:100svh;margin:0 auto;display:flex}h1,h2{font-family:var(--heading);color:var(--text-h);font-weight:500}h1{letter-spacing:-1.68px;margin:32px 0;font-size:56px}@media (width<=1024px){h1{margin:20px 0;font-size:36px}}h2{letter-spacing:-.24px;margin:0 0 8px;font-size:24px;line-height:118%}@media (width<=1024px){h2{font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);color:var(--text-h);border-radius:4px;display:inline-flex}code{background:var(--code-bg);padding:4px 8px;font-size:15px;line-height:135%}.home{max-width:600px;margin:0 auto;padding:60px 24px}.home-title{background:linear-gradient(90deg, var(--neon-pink), var(--neon-indigo));color:#0000;-webkit-background-clip:text;background-clip:text;margin:0 0 40px;font-size:1.7rem;font-weight:800;line-height:1.2}.card-grid{flex-direction:column;gap:12px;display:flex}.lesson-card{background:var(--neon-panel);border:1px solid var(--neon-border-soft);cursor:pointer;box-sizing:border-box;text-align:left;width:100%;color:inherit;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-radius:16px;justify-content:space-between;align-items:center;padding:16px 20px;font-family:inherit;transition:all .2s;display:flex}.lesson-card:hover{border-color:var(--neon-pink);transform:translateY(-2px);box-shadow:0 0 18px #ff6fae2e}.lesson-card:focus-visible{outline:2px solid var(--neon-pink);outline-offset:2px}.card-left{align-items:center;gap:16px;display:flex}.card-icon{background:var(--neon-pink-soft);border-radius:12px;padding:10px;font-size:1.5rem;line-height:1}.card-icon.blue,.card-icon.purple{background:var(--neon-indigo-soft)}.card-icon.green,.card-icon.teal{background:var(--neon-teal-soft)}.card-icon.orange{background:var(--neon-amber-soft)}.card-name{color:var(--neon-text);font-size:1rem;font-weight:700}.card-desc{color:var(--neon-dim);margin-top:2px;font-size:.8rem}.card-arrow{color:var(--neon-pink);font-size:1.2rem}.twopointer-title{text-align:center;margin:0 0 8px;font-size:1.8rem}.app .cell-left{background:var(--neon-pink-soft);color:var(--neon-pink);border-color:var(--neon-pink);box-shadow:0 0 12px #ff6fae73}.app .cell-right{background:var(--neon-indigo-soft);color:var(--neon-indigo);border-color:var(--neon-indigo);box-shadow:0 0 12px #7c8fff73}.app .cell-found{background:var(--neon-teal);color:#06231d;border-color:var(--neon-teal);box-shadow:0 0 14px #43e6c980}.pointer-label{height:14px;font-size:.65rem;font-weight:700}.label-left{color:var(--neon-pink)}.label-right{color:var(--neon-indigo)}.label-none{color:#0000}.binary-title{text-align:center;margin:0 0 8px;font-size:1.8rem;line-height:1.15}.cell-left{background:var(--neon-pink-soft);color:var(--neon-pink);border-color:var(--neon-pink);box-shadow:0 0 10px #ff6fae66}.cell-right{background:var(--neon-indigo-soft);color:var(--neon-indigo);border-color:var(--neon-indigo)}.cell-found{background:var(--neon-teal);color:#06231d;border-color:var(--neon-teal);box-shadow:0 0 12px #43e6c980}.cell-out{color:#8890b859;border-color:var(--neon-border-soft);background:0 0}.pointer-label{height:14px}.label-l{color:#9fa4cf;font-size:.65rem;font-weight:700}.label-m{color:var(--neon-pink);font-size:.65rem;font-weight:700}.label-r{color:var(--neon-indigo);font-size:.65rem;font-weight:700}.fixed-card,.dynamic-card{border-radius:24px;padding:28px}.fixed-visualizer,.dynamic-visualizer{text-align:center;margin:0 0 8px;font-size:1.5rem}.fixed-card .array-wrap,.dynamic-card .array-wrap{gap:12px;margin-bottom:24px}.fixed-card .cell-in-window,.dynamic-card .cell-in-window{background:var(--neon-pink-soft);color:var(--neon-pink);border-color:var(--neon-pink);box-shadow:0 0 12px #ff6fae73}.fixed-card .cell-found,.dynamic-card .cell-found{background:var(--neon-teal);color:#06231d;border-color:var(--neon-teal);box-shadow:0 0 14px #43e6c980}.fixed-card .explanation-card,.dynamic-explanation-card{background:var(--neon-panel-solid);color:var(--neon-text);border:1px solid var(--neon-border-soft);border-left:3px solid var(--neon-pink);text-align:center;border-radius:14px;margin:20px 0 24px;padding:16px 18px;font-size:.95rem;line-height:1.6}.btn-switch{background:var(--neon-amber-soft);color:var(--neon-amber)}.btn-switch:hover{background:var(--neon-amber);color:#2a1a02}.page-nav{justify-content:center;min-height:100vh;padding:18px 0;display:flex}.card{width:100%;max-width:730px}.reversal-card{background:var(--neon-panel);border-radius:24px;padding:26px 30px 28px}.visualizer{letter-spacing:.5px;background:linear-gradient(90deg, var(--neon-pink), var(--neon-indigo));color:#0000;text-align:center;-webkit-background-clip:text;background-clip:text;margin:0 0 4px;font-size:1.45rem;font-weight:500}.list-wrap{justify-content:center;align-items:center;gap:6px;margin-top:28px;margin-bottom:24px;display:flex}.node{border:2px solid #0000;border-radius:11px;justify-content:center;align-items:center;width:34px;height:34px;font-size:.95rem;font-weight:700;transition:all .3s;display:flex}.node-default{background:var(--neon-panel-solid);color:var(--neon-dim);border-color:var(--neon-border)}.node-current{background:var(--neon-panel-solid);color:var(--neon-pink);border:2px solid var(--neon-pink);box-shadow:0 0 12px #ff6fae73}.node-prev,.node-reversed{background:var(--neon-indigo-soft);color:var(--neon-indigo);border:2px solid var(--neon-indigo)}.node-next{background:var(--neon-panel-solid);color:var(--neon-teal);border:2px solid var(--neon-teal);box-shadow:0 0 12px #43e6c959}.node-wrap{flex-direction:row;align-items:center;gap:3px;display:flex}.node-col,.null-col{flex-direction:column;align-items:center;gap:4px;display:flex}.node-label{height:14px;color:var(--neon-dim);font-size:.62rem;font-weight:500}.node-label-null{color:var(--neon-dim);font-size:.95rem;font-weight:400}.arrow{align-items:center;height:50px;padding:0 2px;font-size:1.35rem;transition:all .3s;display:flex}.arrow-right-default{color:#8890b873}.arrow-right{color:var(--neon-pink)}.arrow-left{color:var(--neon-indigo)}.arrow-highlight{color:var(--neon-pink);font-size:1.2rem}.arrow-severed{color:var(--neon-coral);padding:0 4px;font-size:1rem;font-weight:900}.explanation-card{color:var(--neon-text);text-align:center;background:0 0;border:none;border-radius:0;margin:8px 0 16px;padding:0;font-size:1rem;line-height:1.6}.output-wrap{background:var(--neon-panel-solid);border:2px solid var(--neon-border);border-radius:16px;margin-top:6px;margin-bottom:0;padding:18px 20px;box-shadow:0 4px 18px #7c8fff1f}.output-label{color:var(--neon-dim);letter-spacing:1px;text-align:center;text-transform:uppercase;margin:0 0 12px;font-size:.7rem;font-weight:700}.output-row{flex-wrap:wrap;justify-content:center;align-items:center;gap:6px;display:flex}.node-output{background:var(--neon-indigo-soft);color:var(--neon-indigo);border:2px solid var(--neon-indigo);box-shadow:0 4px 12px #7c8fff59}.arrow-output{color:var(--neon-indigo);align-items:center;font-size:1.1rem;display:flex}.fs-page-nav{justify-content:center;min-height:100vh;padding:18px 0;display:flex}.fs-card{width:100%;max-width:730px}.fast-slow-card{border-radius:24px;padding:26px 30px 28px}.fs-visualizer{text-align:center;margin:0 0 4px;font-size:1.45rem}.fs-cycle-wrap{width:620px;height:380px}.fs-edge{fill:none;stroke:#7c8fff59;stroke-width:1.5px}.fs-node circle{fill:var(--neon-panel-solid);stroke:#7c8fff4d;stroke-width:1.5px;transition:all .3s}.fs-node-slow circle{fill:var(--neon-indigo-soft);stroke:var(--neon-indigo);stroke-width:2px;filter:drop-shadow(0 0 6px var(--neon-indigo))}.fs-node-fast circle{fill:var(--neon-pink-soft);stroke:var(--neon-pink);stroke-width:2px;filter:drop-shadow(0 0 6px var(--neon-pink))}.fs-node-meet circle{fill:var(--neon-teal-soft);stroke:var(--neon-teal);stroke-width:2px;filter:drop-shadow(0 0 8px var(--neon-teal))}.fs-node-text{text-anchor:middle;dominant-baseline:central;font-family:var(--neon-mono);fill:var(--neon-dim);font-size:14px}.fs-node-slow .fs-node-text{fill:var(--neon-indigo)}.fs-node-fast .fs-node-text{fill:var(--neon-pink)}.fs-node-meet .fs-node-text{fill:var(--neon-teal)}.fs-node-label{text-anchor:middle;font-size:11px;font-weight:700}.fs-node-slow .fs-node-label{fill:var(--neon-indigo)}.fs-node-fast .fs-node-label{fill:var(--neon-pink)}.fs-node-meet .fs-node-label{fill:var(--neon-teal)}.fast-slow-card .explanation{margin:0}:root{--neon-bg:#0b0e1c;--neon-panel:#13182eb8;--neon-panel-solid:#131a30;--neon-border:#7c8fff38;--neon-border-soft:#7c8fff1f;--neon-text:#e7e9f7;--neon-dim:#8890b8;--neon-pink:#ff6fae;--neon-pink-soft:#ff6fae29;--neon-indigo:#7c8fff;--neon-indigo-soft:#7c8fff29;--neon-teal:#43e6c9;--neon-teal-soft:#43e6c924;--neon-amber:#ffb84d;--neon-amber-soft:#ffb84d29;--neon-coral:#ff5c7a;--neon-coral-soft:#ff5c7a29;--neon-font:"DM Sans", "Segoe UI", sans-serif;--neon-mono:"DM Mono", ui-monospace, monospace;background:var(--neon-bg);--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}body{background:radial-gradient(ellipse 900px 500px at 15% -10%, #7c8fff24, transparent 60%), radial-gradient(ellipse 700px 500px at 100% 10%, #ff6fae1a, transparent 55%), var(--neon-bg);min-height:100vh;color:var(--neon-text);font-family:var(--neon-font);background-attachment:fixed;margin:0}#root{border-inline:none}.twopointer-title,.binary-title,.visualizer,.fs-visualizer,.gr-visualizer,.fixed-visualizer,.dynamic-visualizer,.bt-title{font-family:var(--neon-font);letter-spacing:.3px;text-align:center;background:linear-gradient(90deg, var(--neon-pink), var(--neon-indigo));color:#0000;-webkit-background-clip:text;background-clip:text;font-size:1.45rem;font-weight:800;line-height:1.15}.reversal-card,.fast-slow-card,.graph-card,.fixed-card,.dynamic-card{background:var(--neon-panel);border:1px solid var(--neon-border);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 20px 60px #00000059}.app{max-width:640px;font-family:var(--neon-font);margin:0 auto;padding:40px 24px}.header{text-align:center;margin-bottom:24px}.subtitle{color:var(--neon-dim);margin:0}.subtitle strong{color:var(--neon-pink)}.deco{justify-content:center;gap:6px;margin:10px 0 18px;display:flex}.deco span{background:var(--neon-pink);opacity:.35;border-radius:50%;width:6px;height:6px}.deco span:nth-child(2){background:var(--neon-indigo);opacity:.6}.deco span:nth-child(3){background:var(--neon-teal);opacity:.9}.progress-bar-wrap{background:#7c8fff1f;border-radius:99px;height:5px;margin-bottom:28px;overflow:hidden}.progress-bar-fill{background:linear-gradient(90deg, var(--neon-indigo), var(--neon-pink));border-radius:99px;height:100%;transition:width .4s}.array-wrap{justify-content:center;gap:8px;margin-bottom:28px;display:flex}.cell-wrap{flex-direction:column;align-items:center;gap:6px;display:flex}.cell{width:48px;height:48px;font-family:var(--neon-mono);border:2px solid #0000;border-radius:12px;justify-content:center;align-items:center;font-size:1rem;font-weight:500;transition:all .3s;display:flex}.cell-default{background:var(--neon-panel-solid);color:var(--neon-dim);border-color:var(--neon-border-soft)}.explanation-card{background:var(--neon-panel);border:1px solid var(--neon-border-soft);border-left:3px solid var(--neon-indigo);color:var(--neon-text);border-radius:14px;margin-bottom:16px;padding:14px 18px;font-size:.9rem;line-height:1.55}.card-found{border-left-color:var(--neon-teal)}.controls{flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:20px;display:flex}.btn{font-family:var(--neon-font);cursor:pointer;border:1px solid #0000;border-radius:10px;padding:9px 16px;font-size:.8rem;font-weight:700;transition:all .2s}.btn:disabled{opacity:.35;cursor:default}.btn-next{background:var(--neon-indigo);color:var(--neon-bg)}.btn-next:hover:not(:disabled){filter:brightness(1.1)}.btn-prev,.btn-reset{border-color:var(--neon-border);color:var(--neon-dim);background:0 0}.btn-prev:hover:not(:disabled),.btn-reset:hover{color:var(--neon-text);border-color:var(--neon-indigo)}.btn-back{background:var(--neon-pink-soft);color:var(--neon-pink)}.btn-back:hover{background:var(--neon-pink);color:#2a0611}.btn-back-wrap{justify-content:center;margin-top:20px;display:flex}.step-info{text-align:center}.step-count{font-family:var(--neon-mono);color:var(--neon-dim);margin-bottom:6px;font-size:.75rem}.step-details{flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;display:flex}.step-detail-item{color:var(--neon-dim);font-size:.8rem}.step-detail-item strong{color:var(--neon-text);font-family:var(--neon-mono);font-weight:500}.dot-sep{color:var(--neon-border)}.status-wrap{justify-content:center;margin-bottom:24px;display:flex}.status-pill{border-radius:99px;padding:8px 20px;font-size:.8rem;font-weight:700}.pill-move_left,.pill-move_right{background:var(--neon-indigo-soft);color:var(--neon-indigo)}.pill-found{background:var(--neon-teal);color:#06231d}.bt-page{--bt-bg:#0b0e1c;--bt-panel:#13182eb8;--bt-panel-solid:#131a30;--bt-border:#7c8fff38;--bt-border-soft:#7c8fff1f;--bt-text:#e7e9f7;--bt-text-dim:#8890b8;--bt-pink:#ff6fae;--bt-pink-soft:#ff6fae29;--bt-indigo:#7c8fff;--bt-indigo-soft:#7c8fff29;--bt-teal:#43e6c9;--bt-teal-soft:#43e6c924;--bt-amber:#ffb84d;--bt-amber-soft:#ffb84d29;--bt-coral:#ff5c7a;--bt-coral-soft:#ff5c7a29;background:radial-gradient(ellipse 900px 500px at 15% -10%, #7c8fff24, transparent 60%), radial-gradient(ellipse 700px 500px at 100% 10%, #ff6fae1a, transparent 55%), var(--bt-bg);min-height:100vh;color:var(--bt-text);justify-content:center;padding:40px 20px 56px;font-family:DM Sans,Segoe UI,sans-serif;display:flex}.bt-shell{width:100%;max-width:760px}.bt-header{text-align:center;margin-bottom:22px}.bt-title{letter-spacing:.3px;background:linear-gradient(90deg, var(--bt-pink), var(--bt-indigo));color:#0000;-webkit-background-clip:text;background-clip:text;margin:0 0 4px;font-size:1.7rem;font-weight:800}.bt-subtitle{color:var(--bt-text-dim);margin:0;font-size:.9rem}.bt-deco{justify-content:center;gap:6px;margin:10px 0 18px;display:flex}.bt-deco span{background:var(--bt-pink);opacity:.35;border-radius:50%;width:6px;height:6px}.bt-deco span:nth-child(2){background:var(--bt-indigo);opacity:.6}.bt-deco span:nth-child(3){background:var(--bt-teal);opacity:.9}.bt-progress-wrap{background:#7c8fff1f;border-radius:99px;height:5px;margin-bottom:22px;overflow:hidden}.bt-progress-fill{background:linear-gradient(90deg, var(--bt-indigo), var(--bt-pink));border-radius:99px;height:100%;transition:width .4s}.bt-stats{grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:20px;display:grid}.bt-stat{background:var(--bt-panel);border:1px solid var(--bt-border-soft);text-align:center;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-radius:14px;padding:12px 10px}.bt-stat-label{letter-spacing:.8px;text-transform:uppercase;color:var(--bt-text-dim);margin:0 0 4px;font-size:.62rem;font-weight:700}.bt-stat-value{margin:0;font-family:DM Mono,ui-monospace,monospace;font-size:1.25rem;font-weight:500}.bt-stat-ops .bt-stat-value{color:var(--bt-indigo)}.bt-stat-ins .bt-stat-value{color:var(--bt-teal)}.bt-stat-del .bt-stat-value{color:var(--bt-coral)}.bt-tree-panel{background:var(--bt-panel);border:1px solid var(--bt-border);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:20px;margin-bottom:18px;padding:20px 12px;overflow-x:auto;box-shadow:0 20px 60px #00000059}.bt-tree-svg{margin:0 auto;display:block}.bt-edge{fill:none;stroke:var(--bt-border);stroke-width:1.5px;transition:stroke .3s,stroke-width .3s}.bt-edge-active{stroke:var(--bt-pink);stroke-width:2.2px;stroke-dasharray:5 4;filter:drop-shadow(0 0 4px var(--bt-pink));animation:.7s linear infinite bt-flow}@keyframes bt-flow{to{stroke-dashoffset:-18px}}.bt-node-rect{fill:var(--bt-panel-solid);stroke:var(--bt-indigo);stroke-width:1.4px;transition:all .35s}.bt-node-leaf .bt-node-rect{stroke:var(--bt-teal)}.bt-node-active .bt-node-rect{stroke:var(--bt-pink);filter:drop-shadow(0 0 8px var(--bt-pink))}.bt-node-split .bt-node-rect{stroke:var(--bt-amber);filter:drop-shadow(0 0 10px var(--bt-amber))}.bt-key-div{stroke:var(--bt-border);stroke-width:1px}.bt-key-text{fill:var(--bt-text);text-anchor:middle;dominant-baseline:middle;font-family:DM Mono,ui-monospace,monospace;font-size:12.5px}.bt-node-active .bt-key-text.bt-key-current{fill:var(--bt-pink);font-weight:700}.bt-key-empty{fill:var(--bt-text-dim);font-size:11px}.bt-explain{background:var(--bt-panel);border:1px solid var(--bt-border-soft);border-left:3px solid var(--bt-indigo);color:var(--bt-text);border-radius:14px;margin-bottom:20px;padding:14px 18px;font-size:.88rem;line-height:1.55}.bt-explain-split{border-left-color:var(--bt-amber)}.bt-explain-delete{border-left-color:var(--bt-coral)}.bt-explain-done{border-left-color:var(--bt-teal)}.bt-key-panel{background:var(--bt-panel);border:1px solid var(--bt-border-soft);border-radius:16px;margin-bottom:18px;padding:14px 16px}.bt-key-panel-label{letter-spacing:.8px;text-transform:uppercase;color:var(--bt-text-dim);margin:0 0 10px;font-size:.68rem;font-weight:700}.bt-key-row{gap:8px;display:flex}.bt-key-input{border:1px solid var(--bt-border);color:var(--bt-text);background:#ffffff0a;border-radius:10px;outline:none;flex:1;padding:9px 12px;font-family:DM Mono,ui-monospace,monospace;font-size:.9rem}.bt-key-input:focus{border-color:var(--bt-pink)}.bt-key-input::placeholder{color:var(--bt-text-dim)}.bt-btn{cursor:pointer;border:none;border-radius:10px;padding:9px 16px;font-family:DM Sans,Segoe UI,sans-serif;font-size:.8rem;font-weight:700;transition:all .2s}.bt-btn:disabled{opacity:.35;cursor:default}.bt-btn-insert{background:var(--bt-teal);color:#06231d}.bt-btn-insert:hover:not(:disabled){filter:brightness(1.08)}.bt-btn-delete{background:var(--bt-coral);color:#2a0611}.bt-btn-delete:hover:not(:disabled){filter:brightness(1.08)}.bt-controls{flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:16px;display:flex}.bt-btn-ghost{border:1px solid var(--bt-border);color:var(--bt-text-dim);background:0 0}.bt-btn-ghost:hover:not(:disabled){color:var(--bt-text);border-color:var(--bt-indigo)}.bt-btn-primary{background:var(--bt-indigo);color:#0b0e1c}.bt-btn-primary:hover:not(:disabled){filter:brightness(1.1)}.bt-btn-back{background:var(--bt-pink-soft);color:var(--bt-pink)}.bt-btn-back:hover{background:var(--bt-pink);color:#2a0611}.bt-step-count{text-align:center;color:var(--bt-text-dim);font-family:DM Mono,ui-monospace,monospace;font-size:.75rem}.hm-page{--hm-bg:#0b0e1c;--hm-panel:#13182eb8;--hm-panel-solid:#131a30;--hm-border:#7c8fff38;--hm-border-soft:#7c8fff1f;--hm-text:#e7e9f7;--hm-text-dim:#8890b8;--hm-pink:#ff6fae;--hm-pink-soft:#ff6fae29;--hm-indigo:#7c8fff;--hm-indigo-soft:#7c8fff29;--hm-teal:#43e6c9;--hm-teal-soft:#43e6c924;--hm-amber:#ffb84d;--hm-amber-soft:#ffb84d29;background:radial-gradient(ellipse 900px 500px at 15% -10%, #7c8fff24, transparent 60%), radial-gradient(ellipse 700px 500px at 100% 10%, #ff6fae1a, transparent 55%), 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var(--hm-pink))}.hash-pipeline{justify-content:center;align-items:center;gap:8px;margin-bottom:20px;display:flex}.hm-chip{background:var(--hm-indigo-soft);height:44px;color:var(--hm-indigo);border:1px solid var(--hm-border);border-radius:10px;align-items:center;padding:0 14px;font-family:DM Mono,ui-monospace,monospace;font-size:.85rem;display:flex}.bucket-wrap{background:var(--hm-panel);border:1px solid var(--hm-border);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:20px;flex-direction:column;gap:10px;margin-bottom:18px;padding:20px 24px;display:flex;box-shadow:0 20px 60px #00000059}.bucket-row,.chain-item{align-items:center;gap:6px;display:flex}.hm-page .cell{border-radius:10px;width:44px;height:44px;font-family:DM Mono,ui-monospace,monospace;font-weight:500}.hm-page .cell-default{background:var(--hm-panel-solid);color:var(--hm-text-dim);border:1px solid var(--hm-indigo)}.hm-page 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var(--hm-teal))}.hm-entry-collision{background:var(--hm-amber-soft);color:var(--hm-amber);border:1px dashed var(--hm-amber);filter:drop-shadow(0 0 10px var(--hm-amber))}.hm-page .hm-explanation{background:var(--hm-panel);border:1px solid var(--hm-border-soft);border-left:3px solid var(--hm-indigo);color:var(--hm-text);text-align:left;border-radius:14px;font-size:.88rem}.hm-page .controls{flex-wrap:wrap;gap:8px}.hm-page .btn{border-radius:10px;padding:9px 16px;font-family:inherit;font-size:.8rem;font-weight:700}.hm-page .btn-back{background:var(--hm-pink-soft);color:var(--hm-pink)}.hm-page .btn-back:hover{background:var(--hm-pink);color:#2a0611}.hm-page .btn-reset,.hm-page .btn-prev{border:1px solid var(--hm-border);color:var(--hm-text-dim);background:0 0}.hm-page .btn-reset:hover,.hm-page .btn-prev:hover:not(:disabled){color:var(--hm-text);border-color:var(--hm-indigo)}.hm-page .btn-next{background:var(--hm-indigo);color:#0b0e1c}.hm-page .btn-next:hover:not(:disabled){background:var(--hm-indigo);filter:brightness(1.1)}.hm-page .step-count{color:var(--hm-text-dim);font-family:DM Mono,ui-monospace,monospace;font-size:.75rem}.hm-page .hm-explain-mod{border-left-color:var(--hm-pink)}.hm-page .hm-explain-insert{border-left-color:var(--hm-teal)}.hm-page .hm-explain-collision{border-left-color:var(--hm-amber)}.gr-page-nav{justify-content:center;min-height:100vh;padding:18px 0;display:flex}.gr-card{width:100%;max-width:730px}.graph-card{background:var(--neon-panel);border:1px solid var(--neon-border);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:24px;margin-bottom:20px;padding:26px 30px 28px;box-shadow:0 20px 60px #00000059}.gr-visualizer{letter-spacing:.3px;text-align:center;background:linear-gradient(90deg, var(--neon-pink), var(--neon-indigo));color:#0000;-webkit-background-clip:text;background-clip:text;margin:0 0 4px;font-size:1.45rem;font-weight:800}.gr-graph-wrap{justify-content:center;margin-bottom:8px;display:flex}.gr-edge{stroke:#8890b859;stroke-width:1.5px;transition:all .3s}.gr-edge-tree{stroke:var(--neon-indigo);stroke-width:2px}.gr-edge-checked{stroke:var(--neon-dim);stroke-width:1.8px;stroke-dasharray:5 4}.gr-edge-active{stroke:var(--neon-pink);stroke-width:2.2px;stroke-dasharray:5 4;filter:drop-shadow(0 0 4px var(--neon-pink));animation:.7s linear infinite gr-flow}@keyframes gr-flow{to{stroke-dashoffset:-18px}}@media (prefers-reduced-motion:reduce){.gr-edge-active{animation:none}}.gr-node circle{fill:var(--neon-panel-solid);stroke:var(--neon-border);stroke-width:2px;transition:all .3s}.gr-node-queued circle{stroke:var(--neon-indigo)}.gr-node-done circle{fill:var(--neon-indigo-soft);stroke:var(--neon-indigo)}.gr-node-current circle{stroke:var(--neon-pink);filter:drop-shadow(0 0 6px #ff6fae99)}.gr-node-neighbor circle{stroke:var(--neon-teal);filter:drop-shadow(0 0 6px #43e6c980)}.gr-node-text{text-anchor:middle;dominant-baseline:central;fill:var(--neon-dim);font-size:14px;font-weight:700}.gr-node-queued .gr-node-text,.gr-node-done .gr-node-text{fill:var(--neon-indigo)}.gr-node-current .gr-node-text{fill:var(--neon-pink)}.gr-node-neighbor .gr-node-text{fill:var(--neon-teal)}.gr-node-label{text-anchor:middle;fill:var(--neon-dim);font-size:10px;font-weight:500}.gr-explain{background:var(--neon-panel);border:1px solid var(--neon-border-soft);border-left:3px solid var(--neon-indigo);color:var(--neon-text);text-align:center;border-radius:14px;margin:0 0 18px;padding:14px 18px;font-size:.95rem;line-height:1.55}.gr-explain-dequeue{border-left-color:var(--neon-pink)}.gr-explain-enqueue,.gr-explain-done{border-left-color:var(--neon-teal)}.gr-state{grid-template-columns:1fr 1fr;gap:12px;margin-bottom:18px;display:grid}.gr-state-box{background:var(--neon-panel-solid);border:1px solid var(--neon-border-soft);border-radius:14px;padding:12px 14px}.gr-state-label{color:var(--neon-dim);margin:0 0 10px;font-size:.75rem;font-weight:700}.gr-state-label span{opacity:.6;margin-left:4px;font-weight:400}.gr-state-row{flex-wrap:wrap;align-items:center;gap:6px;min-height:32px;display:flex}.gr-chip-wrap{align-items:center;gap:6px;display:flex}.gr-chip{border-radius:10px;justify-content:center;align-items:center;width:30px;height:30px;font-size:.85rem;font-weight:700;display:flex}.gr-chip-queue{background:var(--neon-panel-solid);color:var(--neon-indigo);border:2px solid var(--neon-indigo)}.gr-chip-order{background:var(--neon-indigo-soft);color:var(--neon-indigo);border:2px solid var(--neon-indigo)}.gr-chip-arrow{color:var(--neon-indigo);font-size:.9rem}.gr-empty{color:var(--neon-dim);opacity:.6;font-size:.8rem}.gr-code{border:1px solid var(--neon-border-soft);border-radius:14px;overflow:hidden}.gr-code-head{background:var(--neon-panel-solid);color:var(--neon-dim);border-bottom:1px solid var(--neon-border-soft);padding:8px 14px;font-size:.75rem;font-weight:700}.gr-code-body{background:#0b0e1c99;margin:0;padding:10px 0;font-family:DM Mono,ui-monospace,Consolas,monospace;font-size:.82rem;line-height:1.7;overflow-x:auto}.gr-code-line{border-left:3px solid #0000;transition:background .25s;display:flex}.gr-code-line-active{background:var(--neon-pink-soft);border-left-color:var(--neon-pink)}.gr-line-no{text-align:right;color:#8890b866;-webkit-user-select:none;user-select:none;flex-shrink:0;width:36px;padding-right:14px}.gr-line-text{color:var(--neon-dim);white-space:pre}.gr-code-line-active .gr-line-text{color:var(--neon-text)}.gr-code-line-active .gr-line-no{color:var(--neon-pink)}.gr-kw{color:var(--neon-indigo)}.gr-step-count{text-align:center;color:var(--neon-dim);margin:0;font-size:.75rem}