:root,:root[data-theme=dark]{--bg: #182233;--bg-elev: #1f2b40;--bg-elev-2: #26344c;--bg-inset: #141d2c;--border: #364762;--text: #eef3fb;--text-dim: #aab8d0;--text-faint: #7d8db0;--accent: #e8956f;--accent-ink: #21130b;--accent-soft: rgba(232, 149, 111, .18);--green: #5bd47e;--page-bg: radial-gradient(1600px 1100px at 50% -20%, #213048 0%, #16202f 70%);--shadow: 0 18px 50px rgba(6, 12, 24, .5);--mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;--sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;color-scheme:dark}:root[data-theme=light]{--bg: #ffffff;--bg-elev: #f6f8fa;--bg-elev-2: #eef1f5;--bg-inset: #f0f3f7;--border: #d6dce3;--text: #1b2129;--text-dim: #57606a;--text-faint: #8a929c;--accent: #c2410c;--accent-ink: #ffffff;--accent-soft: rgba(194, 65, 12, .12);--green: #1a7f37;--page-bg: radial-gradient(1200px 800px at 70% -10%, #eef3fb 0%, #f7f9fc 55%);--shadow: 0 14px 40px rgba(40, 60, 90, .14);color-scheme:light}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--page-bg);color:var(--text);font-family:var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;transition:background .3s ease,color .3s ease}button{font-family:inherit;cursor:pointer}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:var(--border);border-radius:6px}::-webkit-scrollbar-track{background:transparent}.app{min-height:100%;margin:0 auto}.run-btn{background:var(--accent);color:var(--accent-ink);border:0;border-radius:9px;padding:11px 20px;font-weight:700;font-size:14px;white-space:nowrap;transition:filter .15s ease,transform .05s ease,opacity .15s ease}.run-btn:hover:not(:disabled){filter:brightness(1.07)}.run-btn:active{transform:translateY(1px)}.run-btn:disabled{opacity:.4;cursor:not-allowed}.run-btn--sm{padding:8px 14px;font-size:13px}.prompt-sigil{color:var(--accent);font-weight:700;font-family:var(--mono)}.chip{background:var(--bg-elev);border:1px solid var(--border);color:var(--text-dim);border-radius:999px;padding:6px 13px;font-size:12.5px;font-family:var(--mono);transition:all .15s ease}.chip:hover{border-color:var(--accent);color:var(--text)}.theme-toggle{background:var(--bg-elev);border:1px solid var(--border);color:var(--text-dim);border-radius:999px;padding:9px 16px;font-size:13px;font-weight:600;transition:all .18s ease}.theme-toggle:hover{border-color:var(--accent);color:var(--text)}.theme-toggle--floating{position:fixed;top:20px;right:22px;z-index:10;padding:9px 12px;font-size:16px;line-height:1}.app--landing{min-height:100vh;display:grid;place-items:center;padding:24px}.landing{width:100%;max-width:600px;text-align:center;display:flex;flex-direction:column;align-items:center}.landing-logo{width:56px;height:56px;border-radius:14px;background:var(--bg-elev);border:1px solid var(--border);display:grid;place-items:center;font-family:var(--mono);color:var(--accent);font-size:26px;font-weight:700;margin-bottom:22px}.landing-title{font-size:32px;margin:0;letter-spacing:-.02em}.landing-sub{margin:12px 0 32px;color:var(--text-dim);font-size:16px;line-height:1.6;max-width:460px}.landing-examples{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:18px}.landing-examples-label{font-size:12.5px;color:var(--text-faint);align-self:center}.landing-examples--primary{flex-direction:column;width:100%;max-width:420px;gap:14px;margin-top:4px}.landing-examples--primary .landing-examples-label{font-size:13.5px;margin-bottom:4px}.landing-chips{display:flex;flex-direction:column;gap:10px;width:100%}.chip--lg{display:flex;align-items:center;gap:10px;width:100%;justify-content:flex-start;border-radius:12px;padding:14px 18px;font-size:15px;background:var(--bg-inset);box-shadow:var(--shadow)}.chip--lg:hover{border-color:var(--accent);color:var(--text);transform:translateY(-1px)}.app--journey{max-width:860px;margin:0 auto;padding:22px 24px 80px;display:flex;flex-direction:column;gap:18px}.journey-header{display:flex;align-items:center;justify-content:space-between;gap:16px}.brand--button{display:flex;align-items:center;gap:10px;background:transparent;border:0;padding:0;color:var(--text)}.brand--button .logo{width:32px;height:32px;border-radius:9px;background:var(--bg-elev);border:1px solid var(--border);display:grid;place-items:center;font-family:var(--mono);color:var(--accent);font-size:16px;font-weight:700}.brand-name{font-size:15px;font-weight:700;letter-spacing:-.01em}.brand--button:hover .logo{border-color:var(--accent)}.recede{display:flex;flex-direction:column;gap:14px;opacity:.55;filter:saturate(.85);transition:opacity .3s ease,filter .3s ease}.recede:hover,.recede:focus-within{opacity:1;filter:none}.promptbar{display:flex;align-items:center;gap:10px;width:100%;text-align:left;background:var(--bg-inset);border:1px solid var(--border);border-radius:10px;padding:10px 14px;font-family:var(--mono);font-size:14px;color:var(--text);transition:border-color .15s ease}.promptbar:hover{border-color:var(--accent)}.promptbar-text{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.promptbar-edit{font-size:12px;color:var(--text-faint);white-space:nowrap}.promptbar--editing{cursor:default}.promptbar--editing input{flex:1;background:transparent;border:0;outline:none;color:var(--text);font-family:var(--mono);font-size:14px;min-width:0}.journey-rail{position:relative;display:flex;justify-content:space-between;align-items:flex-start;padding:6px 6px 0}.rail-track,.rail-fill{position:absolute;top:11px;height:2px;border-radius:2px}.rail-track{left:6%;right:6%;background:var(--border)}.rail-fill{left:6%;background:var(--accent);transition:width .35s ease;max-width:88%}.rail-node{position:relative;z-index:1;background:transparent;border:0;display:flex;flex-direction:column;align-items:center;gap:7px;padding:0 2px;flex:1}.rail-dot{width:16px;height:16px;border-radius:50%;background:var(--bg-elev);border:2px solid var(--border);display:grid;place-items:center;font-size:9px;color:var(--accent-ink);transition:all .25s ease}.rail-node--active .rail-dot{transform:scale(1.35);box-shadow:0 0 0 4px var(--accent-soft)}.rail-label{font-size:11px;font-weight:600;color:var(--text-faint);text-align:center;max-width:84px;line-height:1.3;transition:color .2s ease}.rail-node--active .rail-label{color:var(--text)}.rail-node--done .rail-label{color:var(--text-dim)}.rail-node:hover .rail-label{color:var(--text)}.stage{background:var(--bg-elev);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);overflow:hidden}.stage-head{padding:24px 26px 18px}.stage-step{font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.stage-head h2{margin:8px 0 0;font-size:22px;letter-spacing:-.01em}.stage-head .headline{margin:10px 0 0;color:var(--text);font-size:15.5px;font-weight:500}.stage-head .body{margin:10px 0 0;color:var(--text-dim);font-size:14px;line-height:1.7}.stage-viz{padding:6px 26px 22px;display:flex;flex-direction:column;gap:16px}.stage-nav{display:flex;align-items:center;justify-content:space-between;padding:16px 26px;border-top:1px solid var(--border);background:var(--bg-elev-2)}.nav-btn{background:var(--bg-elev);border:1px solid var(--border);color:var(--text);padding:9px 18px;border-radius:8px;font-size:13px;font-weight:600;transition:all .15s ease}.nav-btn:hover:not(:disabled){border-color:var(--accent)}.nav-btn:disabled{opacity:.3;cursor:not-allowed}.nav-btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}.nav-done{font-size:13px;font-weight:600;color:var(--green)}.viz-hint{font-size:12.5px;color:var(--text-faint);font-family:var(--mono)}.ctx-stack{display:flex;flex-direction:column;gap:8px}.ctx-block{border-radius:8px;padding:12px 14px;border:1px solid var(--border);background:var(--bg-elev-2);display:flex;align-items:center;justify-content:space-between;gap:14px}.ctx-block .ctx-label{font-weight:600;font-size:14px}.ctx-block .ctx-detail{font-size:12.5px;color:var(--text-dim);margin-top:2px}.ctx-block .ctx-bar{flex:0 0 120px;height:8px;background:var(--bg-inset);border-radius:4px;overflow:hidden}.ctx-block .ctx-bar span{display:block;height:100%;background:var(--accent)}.ctx-block.is-prompt{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent-soft)}.token-wrap{display:flex;flex-wrap:wrap;gap:7px;align-items:flex-start}.token-chip{font-family:var(--mono);font-size:14px;font-weight:700;padding:7px 10px;border-radius:7px;border:1px solid var(--border);position:relative}.token-chip .tok-id{display:block;font-size:9.5px;color:var(--text-faint);margin-top:3px;text-align:center}.token-legend{display:flex;gap:16px;font-size:12px;color:var(--text-dim);margin-top:4px}.embed-grid{display:flex;flex-direction:column;gap:8px}.embed-row{display:flex;align-items:center;gap:12px}.embed-row .etoken{font-family:var(--mono);font-size:13px;min-width:70px;padding:5px 8px;border-radius:6px;background:var(--bg-elev-2);border:1px solid var(--border);text-align:center}.embed-cells{display:flex;gap:4px}.embed-cell{width:30px;height:30px;border-radius:5px;display:grid;place-items:center;font-family:var(--mono);font-size:10px;color:#0d1117;font-weight:600}.attn-layout{display:flex;gap:28px;flex-wrap:wrap}.attn-matrix-scroll{max-width:100%;overflow-x:auto;overflow-y:hidden;padding:14px;background:var(--bg-inset);border:1px solid var(--border);border-radius:10px;-webkit-overflow-scrolling:touch}.attn-matrix{display:grid;gap:3px;width:max-content}.attn-cell{border-radius:3px;width:26px;height:26px}.attn-axis-label{font-family:var(--mono);font-size:10px;color:var(--text-faint)}.attn-focus-panel{flex:1;min-width:240px}.attn-focus-panel h4{margin:0 0 10px;font-size:13px;color:var(--text-dim);font-weight:600}.attn-bar-row{display:flex;align-items:center;gap:10px;margin-bottom:6px}.attn-bar-row .word{font-family:var(--mono);font-size:12px;min-width:64px;text-align:right;color:var(--text-dim)}.attn-bar-track{flex:1;height:16px;background:var(--bg-inset);border-radius:4px;overflow:hidden}.attn-bar-track span{display:block;height:100%;background:linear-gradient(90deg,#a472e8,#c79bff)}.attn-bar-row .pct{font-family:var(--mono);font-size:11px;color:var(--text-faint);min-width:38px}.attn-token-picker{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}.attn-token-picker button{font-family:var(--mono);font-size:12px;padding:5px 9px;border-radius:6px;border:1px solid var(--border);background:var(--bg-elev-2);color:var(--text-dim)}.attn-token-picker button.active{border-color:#a472e8;color:#fff;background:#a472e82e}.output-stream{font-family:var(--mono);font-size:15px;line-height:1.8;background:var(--bg-inset);border:1px solid var(--border);border-radius:10px;padding:16px 18px;min-height:60px}.output-word{display:inline}.cursor-blink{display:inline-block;width:8px;background:var(--green);margin-left:2px;animation:blink 1s steps(2,start) infinite}@keyframes blink{to{visibility:hidden}}.sampling-box{display:flex;gap:20px;flex-wrap:wrap}.sampling-col{background:var(--bg-elev-2);border:1px solid var(--border);border-radius:10px;padding:14px;min-width:220px}.sampling-col h4{margin:0 0 10px;font-size:12px;color:var(--text-dim);font-family:var(--mono)}.cand-row{display:flex;align-items:center;gap:8px;margin-bottom:6px}.cand-row .cand-text{font-family:var(--mono);font-size:13px;min-width:70px}.cand-row.chosen .cand-text{color:var(--green);font-weight:700}.cand-track{flex:1;height:12px;background:var(--bg-inset);border-radius:4px;overflow:hidden}.cand-track span{display:block;height:100%;background:var(--text-faint)}.cand-row.chosen .cand-track span{background:var(--green)}.cand-row .cand-pct{font-family:var(--mono);font-size:11px;color:var(--text-faint);min-width:42px}.tool-card{margin-top:4px;border:1px solid var(--border);border-radius:10px;overflow:hidden}.tool-card .tool-head{background:#3fb9501f;border-bottom:1px solid var(--border);padding:10px 14px;font-family:var(--mono);font-size:13px;color:var(--green);font-weight:700}.tool-card .tool-body{padding:12px 14px;font-family:var(--mono);font-size:13px;color:var(--text-dim)}.tool-card .tool-body .arg-key{color:var(--accent)}.tool-card .tool-result{margin-top:8px;color:var(--green)}.loop-note{margin-top:12px;display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-dim)}.loop-note .loop-icon{font-size:16px}.needs-prompt{text-align:center;color:var(--text-faint);padding:60px 20px;font-size:14px}.concepts{margin:0 26px;padding:16px 0 22px;border-top:1px solid var(--border)}.concepts-hint{font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--text-faint);margin-bottom:8px;font-weight:600}.concept-list{display:flex;flex-direction:column}.concept-card{border-radius:10px;border:1px solid transparent;border-bottom-color:var(--border);overflow:hidden;transition:background .2s ease,border-color .2s ease}.concept-card:last-child{border-bottom-color:transparent}.concept-card.open{background:var(--bg-elev-2);border-color:var(--border);margin:4px 0}.concept-term{width:100%;display:flex;align-items:center;gap:10px;background:transparent;border:0;padding:11px 6px;text-align:left;color:var(--text-dim);font-size:14.5px;font-weight:600;transition:color .15s ease,padding .2s ease}.concept-term:hover{color:var(--text)}.concept-card.open .concept-term{color:var(--text);padding:12px 14px}.concept-dot{width:7px;height:7px;border-radius:50%;flex:0 0 auto;opacity:.5;transition:opacity .2s ease,transform .2s ease}.concept-card.open .concept-dot{opacity:1;transform:scale(1.15)}.concept-term-text{flex:1}.concept-chevron{font-size:20px;color:var(--text-faint);transition:transform .2s ease;line-height:1}.concept-detail{overflow:hidden}.concept-detail-inner{padding:0 16px 15px 31px}.concept-meaning{margin:0 0 10px;color:var(--text-dim);font-size:14px;line-height:1.65}.concept-example{border-left:3px solid var(--accent);background:var(--bg-inset);border-radius:0 8px 8px 0;padding:10px 14px}.concept-example-label{display:block;font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-faint);font-weight:700;margin-bottom:4px}.concept-example p{margin:0;font-size:13.5px;line-height:1.65;color:var(--text)}.concept-example code,.concept-meaning code{font-family:var(--mono);font-size:.92em}@media (max-width: 720px){.landing-title{font-size:26px}.stage-head h2{font-size:19px}.rail-label{font-size:9.5px;max-width:60px}.attn-layout{gap:18px}.attn-matrix-scroll{width:100%}.attn-focus-panel{min-width:0;flex-basis:100%}.attn-bar-row .word{min-width:52px;font-size:11px}}