@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-cyrillic-ext-wght-normal-DjL33-gN.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-cyrillic-wght-normal-BEAKL7Jp.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-vietnamese-wght-normal-6IgcOCM7.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-latin-ext-wght-normal-DC-KSUi6.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-latin-wght-normal-BgDaEnEv.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-cyrillic-ext-wght-normal-X_5orZeX.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-cyrillic-wght-normal-DiZS0aHC.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-symbols2-wght-normal-CO5SzqOn.woff2)format("woff2-variations");unicode-range:U+2000-2001,U+2004-2008,U+200A,U+23B8-23BD,U+2500-259F}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-vietnamese-wght-normal-DadHysG0.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-latin-ext-wght-normal-Bwz-egvJ.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Geist Mono Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/geist-mono-latin-wght-normal-XN7g48iV.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Instrument Serif;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/instrument-serif-latin-400-normal-DnYpCC2O.woff2)format("woff2"),url(/assets/instrument-serif-latin-400-normal-BVbkICAY.woff)format("woff")}@font-face{font-family:Instrument Serif;font-style:italic;font-display:swap;font-weight:400;src:url(/assets/instrument-serif-latin-400-italic-DKMiL14s.woff2)format("woff2"),url(/assets/instrument-serif-latin-400-italic-u__WvvIK.woff)format("woff")}@font-face{font-family:Atkinson Hyperlegible;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/atkinson-hyperlegible-latin-400-normal-BrHNak5F.woff2)format("woff2"),url(/assets/atkinson-hyperlegible-latin-400-normal-BbWidj28.woff)format("woff")}@font-face{font-family:Atkinson Hyperlegible;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/atkinson-hyperlegible-latin-700-normal-GZI4o3u0.woff2)format("woff2"),url(/assets/atkinson-hyperlegible-latin-700-normal-BK6Glc0m.woff)format("woff")}:root{--bg:#090b0f;--surface:#0e1117;--surface-2:#141922;--surface-3:#1a202b;--line:#ffffff13;--line-2:#ffffff24;--text:#e9ecf3;--muted:#98a1b3;--dim:#8791a6;--accent:#6ea8ff;--accent-ink:#04122b;--accent-soft:#6ea8ff24;--amber:#f0c25e;--teal:#5ad6c6;--good:#52d69f;--bad:#ff8070;--paper:#fff;--ink:#0b0d14;--cobalt-strong:#1a36a0;--leaf-strong:#095c39;--coral-strong:#9a2f1f;--font-ui:"Geist Variable", "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono:"Geist Mono Variable", "Geist Mono", ui-monospace, Menlo, monospace;--font-serif:"Instrument Serif", Georgia, serif;--font-learner:"Atkinson Hyperlegible", system-ui, sans-serif;--r:10px;--r-lg:14px;--ease:cubic-bezier(.22, 1, .36, 1);--rail-w:232px;--side-w:344px;--head-h:52px}*,:before,:after{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:var(--font-ui);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;font-size:15px;line-height:1.55;overflow:hidden}h1,h2,h3,p{margin:0}h1,h2,h3{letter-spacing:-.02em;color:#fff;font-weight:600;line-height:1.15}button,select,input,textarea{font:inherit;color:inherit}button{cursor:pointer}a{color:var(--teal);text-underline-offset:3px}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip-link{z-index:100;background:var(--accent);color:var(--accent-ink);border-radius:var(--r);padding:.7rem 1rem;font-weight:600;text-decoration:none;transition:top .15s;position:fixed;top:-5rem;left:.75rem}.skip-link:focus{top:.75rem}::selection{background:var(--accent);color:var(--accent-ink)}kbd{border:1px solid var(--line-2);background:var(--surface-2);min-width:22px;height:22px;color:var(--muted);font-family:var(--font-mono);border-bottom-width:2px;border-radius:5px;place-items:center;padding:0 6px;font-size:11px;line-height:1;display:inline-grid}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}.app{grid-template-columns:var(--rail-w) minmax(0, 1fr) var(--side-w);grid-template-rows:var(--head-h) auto minmax(0, 1fr);background:var(--bg);height:100dvh;display:grid;position:relative;overflow:hidden}.head{grid-column:1/-1;grid-template-columns:var(--rail-w) 1fr auto;border-bottom:1px solid var(--line);align-items:center;gap:1rem;padding:0 1rem 0 1.1rem;display:grid}.banner{border-bottom:1px solid var(--line);background:var(--surface);color:var(--muted);grid-column:1/-1;align-items:center;gap:.7rem;padding:.35rem 1.1rem;font-size:12.5px;line-height:1.4;display:flex}.banner .mono{color:var(--amber)}.rail{border-right:1px solid var(--line);background:var(--surface);flex-direction:column;grid-area:3/1;display:flex;overflow-y:auto}.viewport{border:1px solid var(--line);border-radius:var(--r-lg);background:#07090d;grid-area:3/2;min-height:0;margin:10px;position:relative;overflow:hidden}.side{border-left:1px solid var(--line);background:var(--surface);outline:none;grid-area:3/3;min-height:0;overflow-y:auto}.app[data-span="1"] .viewport{display:none}.app[data-span="1"] .side{background:var(--bg);grid-column:2/-1}.mono{font-family:var(--font-mono);letter-spacing:.01em;font-size:12px}.live{background:var(--good);border-radius:50%;width:7px;height:7px;animation:2.4s ease-in-out infinite pulse;display:inline-block;box-shadow:0 0 0 3px #52d69f2e}@keyframes pulse{50%{box-shadow:0 0 0 5px #52d69f0d}}.brand-btn{background:0 0;border:0;border-radius:8px;justify-self:start;padding:0}.wordmark{align-items:center;gap:.6rem;display:inline-flex}.wordmark-tile{background:#e9edf8;border-radius:8px;place-items:center;width:30px;height:30px;display:grid}.wordmark-text{letter-spacing:-.03em;color:#fff;font-size:17px;font-weight:650}.wordmark-sub{font-family:var(--font-serif);color:var(--muted);margin-left:-.15rem;font-size:19px;font-style:italic}.stepper{justify-self:center;align-items:center;gap:.3rem;display:inline-flex}.step-label{align-items:center;gap:.6rem;padding:0 .5rem;display:inline-flex}.step-label b{color:#fff;font-weight:500}.step-label b i{color:var(--dim);font-style:normal}.step-select{-webkit-appearance:none;appearance:none;color:var(--text);cursor:pointer;background:0 0;border:0;border-radius:6px;max-width:15rem;padding:.3rem .2rem;font-size:14px;font-weight:500}.step-select option{background:var(--surface-2)}.icon-btn{border:1px solid var(--line-2);background:var(--surface-2);width:32px;height:32px;color:var(--text);border-radius:8px;place-items:center;transition:background .2s,border-color .2s;display:grid}.icon-btn:hover:not(:disabled){background:var(--surface-3);border-color:var(--muted)}.icon-btn:disabled{opacity:.35;cursor:not-allowed}.head-tools{align-items:center;gap:.5rem;display:flex}.seg{background:var(--surface-2);border:1px solid var(--line);border-radius:9px;gap:2px;padding:2px;display:inline-flex}.seg button{min-height:28px;color:var(--muted);background:0 0;border:0;border-radius:7px;padding:0 .7rem;font-size:13px;font-weight:500;transition:background .2s,color .2s}.seg button:hover:not(:disabled):not([aria-pressed=true]){color:#fff}.seg button[aria-pressed=true]{color:var(--ink);background:#e9ecf3}.seg button:disabled{opacity:.4;cursor:not-allowed}.seg-fill{display:flex}.seg-fill button{flex:1}.seg-wrap{flex-wrap:wrap}.seg-wrap button{flex:auto}.ghost-btn,.chip-btn{border:1px solid var(--line-2);min-height:32px;color:var(--text);background:0 0;border-radius:8px;align-items:center;gap:.5rem;padding:0 .8rem;font-size:13px;font-weight:500;transition:background .2s,border-color .2s;display:inline-flex}.ghost-btn:hover,.chip-btn:hover{background:var(--surface-2);border-color:var(--muted)}.ghost-btn[aria-pressed=true]{border-color:var(--accent)}.primary-btn{background:var(--accent);min-height:40px;color:var(--accent-ink);transition:background .2s, transform .15s var(--ease);border:0;border-radius:9px;justify-content:space-between;align-items:center;gap:.9rem;padding:0 .9rem 0 1.1rem;font-size:14px;font-weight:600;display:inline-flex}.primary-btn:hover:not(:disabled){background:#8cbaff}.primary-btn:active:not(:disabled){transform:translateY(1px)}.primary-btn:disabled{opacity:.45;cursor:not-allowed}.primary-btn kbd{color:var(--accent-ink);background:#04122b24;border-color:#04122b59}.label{font-family:var(--font-mono);letter-spacing:.02em;color:var(--dim);align-items:center;gap:.5rem;margin-bottom:.6rem;font-size:12px;font-weight:400;display:flex}.label b{color:var(--accent);font-weight:500}.chaps{gap:1px;margin:0;padding:0;list-style:none;display:grid}.chap{text-align:left;width:100%;min-height:40px;color:var(--muted);background:0 0;border:1px solid #0000;border-radius:8px;grid-template-columns:22px 1fr 8px;align-items:center;gap:.7rem;padding:.2rem .55rem;font-size:13.5px;transition:background .2s,color .2s;display:grid}.chap img{opacity:.55;filter:grayscale(.3);background:#dfe5f4;border-radius:6px;padding:2px}.chap:hover{background:var(--surface-2);color:#fff}.chap[aria-current=step]{background:var(--surface-3);border-color:var(--line-2);color:#fff;font-weight:500}.chap[aria-current=step] img,.chap:hover img{opacity:1;filter:none}.chap-dot{background:var(--line-2);border-radius:50%;width:6px;height:6px}.chap[data-done="1"] .chap-dot{background:var(--accent);opacity:.6}.chap[aria-current=step] .chap-dot{background:var(--accent);box-shadow:0 0 10px var(--accent);opacity:1}.stage-wrap{background:radial-gradient(90% 80% at 55% 35%,#121827 0%,#07090d 75%);position:absolute;top:0;bottom:0;left:0;right:0}.canvas-holder{position:absolute;top:0;bottom:0;left:0;right:0;overflow:hidden}.canvas-holder canvas{touch-action:none;cursor:grab}.canvas-holder canvas:active{cursor:grabbing}.viewport[data-max="1"]{z-index:50;border:0;border-radius:0;margin:0;position:fixed;top:0;bottom:0;left:0;right:0}.vp-chrome i{z-index:3;pointer-events:none;border:0 solid #ffffff59;width:16px;height:16px;position:absolute}.vp-chrome i:first-child{border-width:1px 0 0 1px;top:12px;left:12px}.vp-chrome i:nth-child(2){border-width:1px 1px 0 0;top:12px;right:12px}.vp-chrome i:nth-child(3){border-width:0 0 1px 1px;bottom:12px;left:12px}.vp-chrome i:nth-child(4){border-width:0 1px 1px 0;bottom:12px;right:12px}.hover-tip{z-index:70;pointer-events:none;color:var(--ink);background:#f4f6fb;border-radius:7px;padding:.3rem .6rem;font-size:12.5px;font-weight:600;display:grid;position:fixed;box-shadow:0 8px 24px #00000080}.hover-tip small{opacity:.65;font-size:12px;font-weight:400}input[type=range]{-webkit-appearance:none;appearance:none;background:linear-gradient(90deg, var(--accent) var(--fill,0%), var(--line-2) var(--fill,0%));border-radius:2px;width:100%;height:4px}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;cursor:grab;background:#fff;border-radius:50%;width:16px;height:16px;box-shadow:0 0 0 4px #6ea8ff47}input[type=range]::-moz-range-thumb{cursor:grab;background:#fff;border:0;border-radius:50%;width:14px;height:14px}.hs{position:relative}.hotspot{color:#fff;width:24px;height:24px;font-family:var(--font-mono);transition:background .2s, color .2s, transform .2s var(--ease);background:#07090db3;border:1.5px solid #fff;border-radius:50%;place-items:center;font-size:12px;font-weight:500;display:grid;position:relative}.hotspot:after{content:"";border:1px solid #ffffff80;border-radius:50%;animation:2.4s ease-out infinite ring;position:absolute;top:-7px;bottom:-7px;left:-7px;right:-7px}.hotspot:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);transform:scale(1.15)}.hotspot[aria-pressed=true]{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}@keyframes ring{0%{opacity:.7;transform:scale(.8)}to{opacity:0;transform:scale(1.6)}}.hs[data-on="0"] .hs-line,.hs[data-on="0"] .hs-chip{opacity:0}.hs-line,.hs-chip{transition:opacity .2s}.hs-line{transform-origin:0 0;pointer-events:none;background:linear-gradient(90deg,#ffffffb3,#ffffff1a);height:1px;position:absolute;top:12px;left:12px}.hs-chip{border:1px solid var(--line-2);font-family:var(--font-mono);color:#fff;white-space:nowrap;pointer-events:none;background:#07090dd1;border-radius:5px;padding:.12rem .5rem;font-size:12px;position:absolute;transform:translate(-50%,-50%)}.hot-label{border:1px solid var(--accent);text-align:left;pointer-events:none;width:15rem;color:var(--muted);z-index:3;background:#0a0c11f5;border-radius:9px;padding:.65rem .8rem;font-size:13px;line-height:1.4;position:absolute;top:18px;left:34px}.hot-label strong{font-family:var(--font-serif);color:#fff;font-size:18px;font-weight:400;display:block}.panel{color:var(--text)}.panel-title{font-family:var(--font-serif);letter-spacing:-.01em;text-wrap:balance;margin-bottom:1rem;font-size:32px;font-weight:400;line-height:1.1}.panel-lead{margin-bottom:.9rem}.panel-wide .panel-inner,.panel-full .panel-inner{max-width:72rem;margin:0 auto;padding:1.8rem 2rem 3rem}.panel-wide .panel-title,.panel-full .panel-title{max-width:22ch;font-size:clamp(34px,3.4vw,52px)}.facts{gap:.55rem;margin:0 0 1rem;padding:0;list-style:none;display:grid}.facts li{border:1px solid var(--line);background:var(--surface-2);color:var(--muted);border-radius:9px;padding:.7rem .85rem;font-size:14px}.facts strong{color:#fff;font-weight:600}.muted{color:var(--muted)}.tbm{color:var(--dim);font-style:italic}.btn-row{flex-wrap:wrap;gap:.5rem;margin:.9rem 0;display:flex}.btn{border:1px solid var(--line-2);background:var(--surface-2);min-height:40px;color:var(--text);transition:background .2s, border-color .2s, transform .15s var(--ease);border-radius:9px;padding:0 1rem;font-size:14px;font-weight:500}.btn:hover:not(:disabled){background:var(--surface-3);border-color:var(--muted)}.btn:active:not(:disabled){transform:translateY(1px)}.btn-sm{min-height:36px;font-size:13px}.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600}.btn-primary:hover:not(:disabled){background:#8cbaff;border-color:#8cbaff}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-ghost{background:0 0}.badge{vertical-align:middle;border:1px solid var(--line-2);font-family:var(--font-mono);white-space:nowrap;color:var(--text);background:#ffffff08;border-radius:6px;align-items:center;gap:.4rem;padding:.05rem .5rem .05rem .4rem;font-size:12px;line-height:1.6;display:inline-flex}.badge:before{content:"";background:currentColor;border-radius:50%;width:6px;height:6px}.badge-simulated{color:var(--amber);border-color:#f0c25e73}.badge-measured{color:var(--good);border-color:#52d69f66}.badge-example,.badge-exampleRun{color:var(--teal);border-color:#5ad6c666}.badge-preview{color:var(--bad);border-color:#ff807066}.parts{gap:6px;margin:.9rem 0 0;padding:0;list-style:none;display:grid}.part{text-align:left;border:1px solid var(--line);background:var(--surface-2);border-radius:9px;gap:1px;width:100%;min-height:44px;padding:.6rem .8rem;transition:border-color .2s,background .2s;display:grid}.part:hover{border-color:var(--line-2)}.part strong{color:#fff;font-size:14px;font-weight:600}.part span{color:var(--muted);font-size:13px}.part[aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft)}.paper{color:var(--ink);background:#fffef9;border-radius:9px;margin:.9rem 0;padding:.9rem 1rem .6rem;box-shadow:0 12px 30px #00000059}.paper-text{resize:vertical;width:100%;font-family:var(--font-learner);color:var(--ink);background:0 0;border:0;font-size:15px;line-height:1.6}.paper-text:read-only{cursor:default}.paper-foot{border-top:1px dashed #bdb8a6;flex-wrap:wrap;justify-content:space-between;gap:.5rem;padding-top:.45rem;font-size:12.5px;display:flex}.paper-foot .muted{color:#55524a}.count-ok{color:#095c39;font-weight:600}.count-short,.count-long{color:#9a2f1f;font-weight:600}.toggle{align-items:center;gap:.6rem;min-height:44px;font-weight:500;display:flex}.toggle input{width:20px;height:20px;accent-color:var(--accent)}.preview{border:1px dashed var(--line-2);border-radius:10px;gap:.6rem;margin-top:.4rem;padding:.9rem;display:grid}.preview-head{flex-wrap:wrap;align-items:center;gap:.6rem;display:flex}.preview-list{gap:.45rem;margin:0;padding-left:1.1rem;font-size:14px;display:grid}.preview-list li>*{vertical-align:middle}.preview-pic{background:#e9edf8;border-radius:7px;width:30px;height:30px;margin-right:.5rem;padding:2px}.net-row{flex-wrap:wrap;align-items:center;gap:1.4rem;margin:.9rem 0 .3rem;font-size:14px;display:flex}.net-item{align-items:center;gap:.5rem;display:flex}.dot{border:2px solid var(--dim);border-radius:50%;width:12px;height:12px;display:inline-block}.dot-on{background:var(--good);border-color:var(--good)}.term-head{align-items:center;gap:.6rem;margin:.9rem 0 .5rem;display:flex}.term{border:1px solid var(--line-2);font-family:var(--font-mono);color:#b5efe7;background:#05070b;border-radius:10px;margin:0;padding:.9rem 1rem;font-size:12px;line-height:1.7;overflow-x:auto}.refusal{background:#ff807014;border:1px solid #ff807080;border-radius:10px;margin-top:.6rem;padding:.7rem .9rem;font-size:14px}.modelcard{border:1px solid var(--line);background:var(--surface-2);border-radius:10px;margin-bottom:.9rem;padding:.95rem 1rem}.kv{grid-template-columns:auto 1fr;gap:.25rem 1rem;margin:0 0 .8rem;font-size:13.5px;display:grid}.kv dt{color:var(--muted)}.kv dd{color:#fff;margin:0;font-weight:500}.ram{color:var(--muted);grid-template-columns:auto 1fr auto;align-items:center;gap:.7rem;font-size:12.5px;display:grid}.bar{background:var(--line-2);border-radius:3px;height:5px;overflow:hidden}.bar i{background:linear-gradient(90deg, var(--teal), var(--accent));height:100%;transition:width .2s linear;display:block}.stages{gap:5px;margin:0;padding:0;list-style:none;display:grid}.stages li{border:1px solid var(--line);background:var(--surface-2);border-radius:9px;grid-template-columns:1.6rem 1fr auto auto;align-items:center;gap:.6rem;min-height:42px;padding:.5rem .7rem;font-size:14px;transition:background .25s,border-color .25s;display:grid}.stages li[data-state=running]{border-color:var(--accent);background:var(--accent-soft)}.stages li[data-state=passed],.stages li[data-state=retried]{border-color:#52d69f66}.stage-n{border:1px solid var(--line-2);width:1.5rem;height:1.5rem;font-family:var(--font-mono);color:var(--muted);border-radius:6px;place-items:center;font-size:12px;display:grid}.stage-name{color:#fff;font-weight:500}.stage-status{color:var(--muted);font-size:12px}.stage-time{text-align:right;min-width:4.2rem;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:12.5px}.stage-foot{margin-top:.7rem;font-size:12.5px}.ready{background:#52d69f12;border:1px solid #52d69f80;border-radius:10px;margin-top:.8rem;padding:.75rem .9rem;font-size:14px}.two-lines{color:var(--muted);gap:.2rem;margin:.4rem 0 1.1rem;font-size:16px;display:grid}.two-lines strong{color:#fff;font-weight:600}.verdict{font-family:var(--font-mono);color:var(--muted);font-size:12px;font-weight:400}.check-sents{gap:.35rem;margin:0 0 .9rem;padding-left:1.2rem;font-size:14.5px;display:grid}.check-sents li .chip{margin-left:.5rem}.check-sents li.bad>span:first-child{-webkit-text-decoration:underline wavy var(--bad);text-decoration:underline wavy var(--bad);text-underline-offset:4px}.chip{font-family:var(--font-mono);border:1px solid var(--line-2);color:var(--muted);border-radius:5px;padding:0 .45rem;font-size:12px;display:inline-block}.gauges{grid-template-columns:repeat(auto-fit,minmax(9.5rem,1fr));gap:.5rem;display:grid}.gauge{border:1px solid var(--line);background:var(--surface-2);border-radius:10px;gap:.1rem;padding:.7rem .8rem;display:grid}.gauge-label{color:var(--muted);font-size:12px}.gauge-value{font-family:var(--font-serif);color:#fff;font-size:30px;line-height:1.1}.gauge-limit{font-family:var(--font-mono);color:var(--dim);font-size:12px}.gauge-flag{font-family:var(--font-mono);font-size:12px}.gauge-ok .gauge-flag{color:var(--good)}.gauge-bad{border-color:#ff807080}.gauge-bad .gauge-flag{color:var(--bad)}.retry-arrow{border-left:2px solid var(--accent);background:var(--accent-soft);border-radius:0 10px 10px 0;gap:.25rem;padding:.8rem 1rem;font-size:14px;display:grid}.retry-arrow q{color:#fff;font-weight:600}.sub-h{font-family:var(--font-serif);margin:1.5rem 0 .6rem;font-size:26px;font-weight:400}.cands{gap:.4rem;margin:0;padding:0;list-style:none;display:grid}.cands li{border:1px solid var(--line);background:var(--surface-2);border-radius:10px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;padding:.65rem .85rem;font-size:14px;display:flex}.cands li.bad{border-color:#ff807080}.cands li.ok{border-color:#52d69f66}.cands li.tpl{border-style:dashed;border-color:var(--accent)}.cand-opts{color:var(--muted);font-style:normal}.limit{border:1px solid var(--line);background:var(--surface-2);color:var(--muted);border-radius:10px;margin-top:1.2rem;padding:.8rem 1rem;font-size:14px}.map-grid{grid-template-columns:repeat(auto-fit,minmax(20rem,1fr));gap:.7rem;display:grid}.map-row{border:1px solid var(--line);background:var(--surface);border-radius:12px;grid-template-columns:1fr auto;align-items:center;gap:.4rem .9rem;padding:.85rem 1rem;transition:border-color .2s;display:grid}.map-row:hover{border-color:var(--line-2)}.map-row.map-none{border-style:dashed;border-color:#ff807080}.map-word{gap:.1rem;display:grid}.map-sentence{color:var(--muted);font-size:13px}.map-key{font-family:var(--font-serif);color:var(--accent);font-size:28px;line-height:1.1}.map-trail{font-family:var(--font-mono);flex-wrap:wrap;grid-column:1;gap:.35rem;font-size:12px;display:flex}.trail-step{border:1px solid var(--line-2);color:var(--muted);border-radius:5px;padding:0 .45rem}.trail-step.hit{color:var(--good);border-color:#52d69f80}.trail-step.miss{border-style:dashed}.map-pic{text-align:center;grid-area:1/2/span 2;width:84px}.map-img{background:#eef1f8;border-radius:12px;width:76px;height:76px;padding:5px}.map-empty{font-family:var(--font-mono);color:var(--bad);font-size:12px;line-height:1.3;display:block}.cov{border:1px solid var(--line);background:var(--surface);border-radius:12px;gap:.3rem;margin:1rem 0;padding:.85rem 1rem;font-size:14px;display:grid}.aids{grid-template-columns:repeat(auto-fit,minmax(14rem,1fr));gap:.6rem;margin:0;padding:0;list-style:none;display:grid}.aids li{border:1px solid var(--line);background:var(--surface);border-radius:10px;gap:.1rem;padding:.8rem .95rem;display:grid}.aids strong{color:#fff;font-size:14px;font-weight:600}.aids span{color:var(--muted);font-size:13px}.learner-2d{place-items:center;padding:1.5rem;display:grid;position:absolute;top:0;bottom:0;left:0;right:0}.learner-frame{aspect-ratio:16/10;width:min(100%,52rem,160dvh - 19.2rem);box-shadow:0 0 0 1px var(--line-2), 0 0 90px #6ea8ff33, 0 30px 80px #0009;background:#fff;border:10px solid #04060a;border-radius:22px;overflow:hidden}.fs{z-index:80;background:#fff;flex-direction:column;display:flex;position:fixed;top:0;bottom:0;left:0;right:0}.fs-bar{background:var(--bg);color:#fff;flex:none;justify-content:space-between;align-items:center;gap:1rem;padding:.5rem 1rem;font-size:13px;display:flex}.fs-tag{flex-wrap:wrap;align-items:center;gap:.6rem;display:flex}.fs-body{flex:1;min-height:0}.embedded-learner{border-radius:8px;width:640px;height:400px;position:relative;overflow:hidden}.glass-glare{pointer-events:none;z-index:9;background:linear-gradient(118deg,#fff3 0%,#ffffff0a 28%,#fff0 42%),radial-gradient(120% 80% at 100% 100%,#0000001a,#0000 60%);position:absolute;top:0;bottom:0;left:0;right:0}.res-grid{grid-template-columns:1.1fr 1fr;align-items:start;gap:1.6rem;margin:1.4rem 0;display:grid}.res-table{border-collapse:separate;border-spacing:0;background:var(--surface);border:1px solid var(--line);border-radius:14px;width:100%;margin-bottom:1.4rem;font-size:14px;overflow:hidden}.res-table caption{text-align:left;font-family:var(--font-serif);color:#fff;padding:0 0 .5rem;font-size:26px}.res-table th,.res-table td{text-align:left;border-top:1px solid var(--line);padding:.55rem .9rem;font-weight:400}.res-table tr:first-child th,.res-table tr:first-child td{border-top:0}.res-table th{color:var(--muted)}.res-table td:first-of-type{font-family:var(--font-mono);color:#fff;font-size:13px}.ba h3{font-family:var(--font-serif);flex-wrap:wrap;align-items:center;gap:.5rem;margin-bottom:.3rem;font-size:26px;font-weight:400;display:flex}.ba-block{border:1px solid var(--line);background:var(--surface);border-radius:12px;gap:.4rem;margin:.8rem 0;padding:.9rem 1.1rem;font-size:13.5px;display:grid}.ba-row{font-family:var(--font-mono);color:var(--muted);grid-template-columns:12rem 1fr 3rem;align-items:center;gap:.7rem;font-size:12px;display:grid}.ba-track{background:var(--line-2);border-radius:3px;height:6px;overflow:hidden}.ba-track i{background:var(--bad);height:100%;display:block}.ba-row:nth-of-type(3) .ba-track i{background:var(--teal)}.how{border:1px dashed var(--line-2);color:var(--muted);border-radius:12px;padding:1rem 1.2rem;font-size:14px}.how h3{font-family:var(--font-serif);margin-bottom:.3rem;font-size:22px;font-weight:400}.impact-lead{font-family:var(--font-serif);color:#fff;max-width:42ch;margin-bottom:.8rem;font-size:clamp(24px,2.3vw,36px);line-height:1.25}.impact-lead strong{color:var(--accent);font-weight:400}.ex{grid-template-columns:1fr 1fr;gap:1.2rem;margin:1.5rem 0;display:grid}.ex-card{border:1px solid var(--line);background:var(--surface);border-radius:16px;padding:1.5rem}.ex-card h3{flex-wrap:wrap;align-items:baseline;gap:.5rem;margin-bottom:.7rem;font-size:15px;display:flex}.ex-card h3 .muted{font-size:13px;font-weight:400}.ex-card blockquote{color:var(--muted);margin:0;font-size:18px;line-height:1.65}.ex-good{background:#fff;border:0;box-shadow:0 0 120px #6ea8ff40}.ex-good h3,.ex-good .muted{color:var(--ink)}.ex-good blockquote{font-family:var(--font-learner);color:var(--ink);font-size:28px;font-weight:700;line-height:1.2}.three{grid-template-columns:repeat(3,1fr);gap:1rem;margin:0;padding:0;list-style:none;display:grid}.three li{border:1px solid var(--line);border-top:2px solid var(--teal);background:var(--surface);color:var(--muted);border-radius:12px;padding:1.1rem;font-size:14px}.three li:nth-child(2){border-top-color:var(--good)}.three li:nth-child(3){border-top-color:var(--bad)}.three h3{font-family:var(--font-serif);margin-bottom:.3rem;font-size:22px;font-weight:400}.cred-grid{grid-template-columns:1fr 1fr;gap:2rem;margin:1.4rem 0;display:grid}.credits h3{font-family:var(--font-serif);margin:1rem 0 .3rem;font-size:24px;font-weight:400}.credits ul{color:var(--muted);margin:0;padding-left:1.1rem}.credits li{margin:.2rem 0}.credits p{color:var(--muted)}.lic{font-size:14px}.dev2d{place-items:center;padding:3rem 2rem 14rem;display:grid;position:absolute;top:0;bottom:0;left:0;right:0}.dev2d svg{width:min(100%,52rem);height:auto;max-height:100%;overflow:visible}.fan-spin{animation:.5s linear infinite fan}@keyframes fan{to{transform:rotate(360deg)}}.arasaac-credit{color:var(--dim);padding:.5rem 1.3rem 1rem;font-size:12px}.veil{z-index:90;background:var(--bg);transition:opacity .7s var(--ease) .1s, visibility 0s linear .9s;place-content:center;justify-items:center;gap:1rem;display:grid;position:fixed;top:0;bottom:0;left:0;right:0}.veil[data-done="1"]{opacity:0;visibility:hidden;pointer-events:none}.veil-sun{background:#e9edf8;border-radius:16px;padding:6px;animation:4s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.veil .wordmark-text{font-size:24px}.veil .wordmark-tile{display:none}.veil-bar{background:var(--line-2);width:9rem;height:2px;overflow:hidden}.veil-bar i{background:var(--accent);width:35%;height:100%;animation:sweep 1.2s var(--ease) infinite;display:block}@keyframes sweep{0%{transform:translate(-100%)}to{transform:translate(300%)}}@media (max-width:1180px){:root{--rail-w:220px;--side-w:310px}.head{grid-template-columns:var(--rail-w) 1fr auto}.tool-skip{display:none}}@media (max-width:899px){.app{grid-template-columns:1fr;grid-template-rows:var(--head-h) auto 52dvh minmax(0, 1fr);overflow:hidden}.head{grid-template-columns:auto 1fr auto;gap:.5rem;padding:0 .6rem}.wordmark-sub,.step-label b{display:none}.stepper{justify-self:end}.step-select{max-width:9rem;font-size:13px}.head-tools{display:none}.banner{padding:.3rem .7rem;font-size:12px}.rail{display:none}.viewport{grid-column:1;margin:6px}.side{border-left:0;border-top:1px solid var(--line);grid-area:4/1}.app[data-span="1"] .side{grid-area:3/1/span 2}.vp-full,.vp-read,.hud,.part-card{width:auto;bottom:10px;left:10px;right:10px}.panel-inner{padding:1rem 1rem 2rem}.ba-row{grid-template-columns:1fr 3rem}.ba-row .ba-label{grid-column:1/-1}.ba-row .ba-track{grid-column:1}.dev2d{padding:2rem 1rem 8rem}}.app[data-chapter="8"] .briefing{display:none}.viewport{background:var(--surface);flex-direction:column;display:flex}.vp-head{border-bottom:1px solid var(--line);flex:none;grid-template-columns:minmax(0,1fr) minmax(0,22rem);align-items:start;gap:1.5rem;padding:1.1rem 1.4rem 1rem;display:grid}.vp-kicker{color:var(--teal);align-items:center;gap:.5rem;margin-bottom:.45rem;display:inline-flex}.vp-h1{font-family:var(--font-serif);letter-spacing:-.01em;color:#fff;text-wrap:balance;font-size:30px;font-weight:400;line-height:1.08}.viewport[data-hero="1"] .vp-h1{max-width:26ch;font-size:34px}.vp-text{max-width:60ch;color:var(--muted);margin-top:.5rem;font-size:15px;line-height:1.5}.vp-side{justify-items:stretch;gap:.7rem;display:grid}.tip{background:var(--accent-soft);color:#dbe7ff;border:1px solid #6ea8ff59;border-radius:10px;grid-template-columns:20px 1fr;align-items:start;gap:.6rem;padding:.65rem .8rem;font-size:13.5px;line-height:1.45;display:grid}.tip img{background:#e9edf8;border-radius:5px;padding:1px}.vp-full{justify-self:end}.vp-canvas{background:#07090d;flex:1;min-height:0;position:relative}.vp-canvas .stage-wrap{position:absolute;top:0;bottom:0;left:0;right:0}.vp-foot{border-top:1px solid var(--line);background:var(--surface);flex:none;justify-content:space-between;align-items:center;gap:1rem;padding:.7rem 1.4rem;display:flex}.vp-nav{flex:none;gap:.5rem;margin-left:auto;display:flex}.vp-nav .ghost-btn,.vp-nav .primary-btn,.tool{white-space:nowrap}.toolbar{flex-wrap:nowrap;min-width:0}.vp-nav .primary-btn{min-width:8.5rem}.toolbar{flex-wrap:wrap;align-items:center;gap:.5rem;display:flex}.tool{border:1px solid var(--line-2);min-height:34px;color:var(--text);background:0 0;border-radius:8px;align-items:center;gap:.6rem;padding:0 .85rem;font-size:13px;font-weight:500;transition:background .2s,border-color .2s;display:inline-flex}.tool:hover{background:var(--surface-2);border-color:var(--muted)}.tool[aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft)}.tool-range{cursor:default}.tool-range:hover{background:0 0}.tool-range input{width:5.5rem}.viewport[data-max="1"] .vp-head,.viewport[data-max="1"] .vp-foot{background:var(--bg)}.no-webgl{text-align:center;color:var(--muted);place-content:center;max-width:32rem;margin:auto;padding:2rem;display:grid;position:absolute;top:0;bottom:0;left:0;right:0}.part-card{z-index:5;border:1px solid var(--line-2);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#0c0f15e6;border-radius:12px;gap:.5rem;width:min(19rem,100% - 32px);padding:.9rem 1rem;display:grid;position:absolute;bottom:16px;right:16px}.part-card strong{font-family:var(--font-serif);color:#fff;font-size:21px;font-weight:400}.part-card span{color:var(--muted);font-size:14px}.part-card .ghost-btn{justify-self:start}::view-transition-old(root){animation-duration:.38s;animation-timing-function:var(--ease)}::view-transition-new(root){animation-duration:.38s;animation-timing-function:var(--ease)}.side-fade{animation:side-in .5s var(--ease) both}@keyframes side-in{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.canvas-holder canvas{animation:canvas-in .8s var(--ease) both}@keyframes canvas-in{0%{opacity:0}to{opacity:1}}.tour-note{background:linear-gradient(#6ea8ff29,#6ea8ff0f);border:1px solid #6ea8ff66;border-radius:12px;margin:.9rem .8rem 0;padding:.9rem .95rem}.tn-head{align-items:center;gap:.55rem;margin-bottom:.4rem;display:flex}.tn-head img{background:#e9edf8;border-radius:6px;padding:2px}.tn-head strong{color:#fff;font-size:14.5px}.tour-note p{color:#c9d8f5;margin-bottom:.7rem;font-size:13px;line-height:1.5}.tn-bar{background:#ffffff24;border-radius:2px;height:4px;overflow:hidden}.tn-bar i{background:var(--accent);height:100%;transition:width .5s var(--ease);display:block}.tn-count{color:#9db8e6;margin-top:.4rem;display:block}.rail-keys{color:var(--dim);margin-top:auto;padding:.9rem 1rem}.head-tools .ghost-btn{white-space:nowrap}.barrier .panel-inner{max-width:74rem}.ba-stage{grid-template-columns:minmax(0,1fr);gap:1rem;margin:1.4rem 0 1.6rem;display:grid}.wipe{border:1px solid var(--line-2);--pos:50%;background:#0b0e14;border-radius:18px;height:clamp(250px,36vh,340px);position:relative;overflow:hidden}.wipe-layer{align-items:center;display:grid;position:absolute;top:0;bottom:0;left:0;right:0}.wipe-before{background:radial-gradient(80% 100% at 0%,#141a26,#0a0d13)}.wipe-after{color:var(--ink);clip-path:inset(0 0 0 var(--pos));background:#fff}.wipe-body{align-content:center;gap:.9rem;width:min(46%,32rem);padding:1.6rem 2rem;display:grid}.wipe-before .wipe-body{justify-self:start}.wipe-after .wipe-body{justify-self:end;width:min(46%,32rem)}.wipe-tag{color:var(--muted);flex-wrap:wrap;align-items:center;gap:.6rem;display:flex}.wipe-after .wipe-tag{color:#3b4258}.wipe-after .badge{color:var(--ink);border-color:#0b0d1466}.wipe-dense{color:var(--muted);font-size:19px;line-height:1.75}.wipe-easy{align-items:center;gap:1.1rem;display:flex}.wipe-pic{object-fit:contain;background:#f2f4fa;border-radius:14px;flex:none;width:104px;height:104px;padding:6px}.wipe-easy p{font-family:var(--font-learner);letter-spacing:-.02em;font-size:clamp(26px,2.6vw,40px);font-weight:700;line-height:1.12}.wipe-handle{top:0;bottom:0;left:var(--pos);background:var(--accent);pointer-events:none;width:2px;margin-left:-1px;position:absolute;box-shadow:0 0 24px #6ea8ffcc}.wipe-handle i{background:var(--accent);border-radius:50%;width:38px;height:38px;margin:-19px 0 0 -19px;position:absolute;top:50%;left:50%;box-shadow:0 6px 20px #00000080}.wipe-handle i:before,.wipe-handle i:after{content:"";border:solid var(--accent-ink);border-width:2px 2px 0 0;width:7px;height:7px;margin-top:-3.5px;position:absolute;top:50%}.wipe-handle i:before{left:9px;transform:rotate(-135deg)}.wipe-handle i:after{right:9px;transform:rotate(45deg)}.wipe-range{opacity:0;cursor:ew-resize;-webkit-appearance:none;appearance:none;background:0 0;width:100%;height:100%;margin:0;position:absolute;top:0;bottom:0;left:0;right:0}.wipe-range::-webkit-slider-thumb{-webkit-appearance:none;width:40px;height:100%}.wipe:has(.wipe-range:focus-visible){outline:2px solid var(--accent);outline-offset:3px}.wipe-hint{color:var(--dim);pointer-events:none;position:absolute;bottom:12px;left:50%;transform:translate(-50%)}.deltas{grid-template-columns:repeat(3,1fr);gap:.8rem;margin:0;display:grid}.deltas>div{border:1px solid var(--line);background:var(--surface);border-radius:12px;padding:.8rem 1rem}.deltas dt{color:var(--muted);font-size:12.5px}.deltas dd{font-family:var(--font-serif);color:#fff;align-items:baseline;gap:.7rem;margin:.1rem 0 0;font-size:36px;line-height:1.1;display:flex}.deltas dd i{font-style:normal;font-family:var(--font-ui);color:var(--accent);font-size:18px}.deltas dd b:last-child{color:var(--teal);font-weight:400}.why{border-top:1px solid var(--line);grid-template-columns:minmax(0,.9fr) minmax(0,1.4fr);align-items:start;gap:2rem;padding-top:1.4rem;display:grid}.causes{gap:.6rem;margin:0;padding:0;list-style:none;display:grid}.causes li{border:1px solid var(--line);background:var(--surface);border-radius:12px;align-items:center;gap:.8rem;padding:.55rem .8rem .55rem .55rem;font-size:14.5px;display:flex}.causes img{background:#e9edf8;border-radius:8px;flex:none;padding:3px}.why-statement{font-family:var(--font-serif);color:#fff;font-size:clamp(20px,1.7vw,26px);line-height:1.35}.why-statement .mono{color:var(--teal);font-family:var(--font-mono);margin-bottom:.4rem;font-size:12px;display:block}.checks .panel-inner{max-width:76rem}.checks-sub{color:var(--muted);flex-wrap:wrap;align-items:center;gap:.6rem;margin:-.3rem 0 1.4rem;font-size:15px;display:flex}.flow{grid-template-columns:repeat(auto-fit,minmax(0,1fr));gap:.4rem;margin:0;padding:0;list-style:none;display:grid}.flow-node{width:100%;color:var(--muted);background:0 0;border:0;justify-items:center;gap:.5rem;padding:.4rem .2rem;display:grid}.flow-dot{border:1.5px solid var(--line-2);background:var(--surface);width:38px;height:38px;font-family:var(--font-mono);transition:background .3s, border-color .3s, color .3s, transform .3s var(--ease);border-radius:50%;place-items:center;font-size:14px;display:grid}.flow-label{font-size:13px;font-weight:500}.flow-node[data-state=done] .flow-dot{color:var(--accent);border-color:#6ea8ff99}.flow-node[data-state=now] .flow-dot{background:var(--accent);color:var(--accent-ink);border-color:#0000;transform:scale(1.18);box-shadow:0 0 0 6px #6ea8ff2e}.flow-node[data-state=now][data-tone=fail] .flow-dot{background:var(--bad);color:#2a0600;box-shadow:0 0 0 6px #ff80702e}.flow-node[data-state=now][data-tone=ok] .flow-dot{background:var(--good);color:#00230f;box-shadow:0 0 0 6px #52d69f2e}.flow-node[data-state=now] .flow-label{color:#fff}.flow-node:hover .flow-dot{border-color:var(--muted)}.flow-bar{background:var(--line);border-radius:1px;height:2px;margin:.3rem 0 1.4rem}.flow-bar i{background:var(--accent);height:100%;transition:width .5s var(--ease);display:block}.step-card{border:1px solid var(--line-2);background:var(--surface);min-height:21rem;animation:side-in .45s var(--ease) both;border-radius:18px;grid-template-columns:minmax(0,.8fr) minmax(0,1.5fr);gap:2rem;padding:1.6rem;display:grid}.step-card[data-tone=fail]{border-color:#ff807066}.step-card[data-tone=ok]{border-color:#52d69f66}.step-n{color:var(--dim)}.step-copy h3{font-family:var(--font-serif);margin:.4rem 0 .7rem;font-size:30px;font-weight:400;line-height:1.1}.step-copy p{color:var(--muted);margin-bottom:1.2rem;font-size:15px;line-height:1.55}.step-ctl{flex-wrap:wrap;gap:.5rem;display:flex}.step-body{align-content:start;gap:1rem;min-width:0;display:grid}.retry{gap:1rem;display:grid}.retry-note{border-left:2px solid var(--accent);background:var(--accent-soft);border-radius:0 10px 10px 0;gap:.3rem;padding:.8rem 1rem;font-size:14px;display:grid}.retry-note q{color:#fff;font-weight:600}.diff{gap:.5rem;font-size:15px;display:grid}.diff del,.diff ins{border-radius:9px;padding:.6rem .8rem;text-decoration:none;display:block}.diff del{color:#ffb5aa;background:#ff80701a;-webkit-text-decoration:line-through #ff807099;text-decoration:line-through #ff807099}.diff ins{color:#aef0cf;background:#52d69f1a;font-weight:600}.step-card .gauge-value{font-size:26px}@media (max-width:1300px){.tool-range span{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.tool-range input{width:4.5rem}}@media (max-width:1180px){.vp-head{grid-template-columns:minmax(0,1fr)}.vp-side{grid-template-columns:1fr auto;align-items:center}.step-card,.why{grid-template-columns:1fr}}@media (max-width:899px){.app{grid-template-rows:var(--head-h) auto 62dvh minmax(0, 1fr)}.head-tools{display:none}.vp-head{gap:.3rem;padding:.6rem .9rem}.vp-h1,.viewport[data-hero="1"] .vp-h1{font-size:20px}.vp-text,.vp-side,.vp-kicker{display:none}.vp-foot{padding:.5rem .7rem}.toolbar .tool-range,.toolbar .tool:nth-of-type(n+3),.vp-nav .ghost-btn,.tour-note{display:none}.deltas{grid-template-columns:1fr}.wipe{height:330px}.wipe-body,.wipe-after .wipe-body{width:100%;padding:1rem}.wipe-before .wipe-body{align-self:start}.wipe-after .wipe-body{align-self:end}.wipe-before .wipe-dense{font-size:15px}.wipe-easy{gap:.7rem}.wipe-pic{width:64px;height:64px}.flow-label{font-size:11px}.flow-dot{width:30px;height:30px;font-size:12px}}.ex-good .badge{color:var(--ink);background:0 0;border-color:#0b0d1466}.app[data-span="1"] .side{background:var(--bg);border-left:0;grid-column:2/-1;padding:10px;overflow:hidden}.app[data-span="1"] .side-fade{height:100%}.page-frame{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);flex-direction:column;height:100%;display:flex;overflow:hidden}.page-body{background:radial-gradient(70% 60% at 85% 0%, #6ea8ff12, transparent 70%), var(--bg);flex:1;min-height:0;overflow-y:auto}.page-body::-webkit-scrollbar{width:8px}.page-body::-webkit-scrollbar-thumb{background:#ffffff2e;border-radius:8px}.page-body .panel-full,.page-body .panel-wide{width:auto;box-shadow:none;background:0 0;border:0;margin:0;animation:none;position:static;top:auto;bottom:auto;left:auto;right:auto;overflow:visible}.page-body .panel-inner,.page-body .panel-full .panel-inner,.page-body .panel-wide .panel-inner{max-width:76rem;margin:0 auto;padding:1.4rem 1.6rem 2rem}.page-body .panel-lead{margin-bottom:1rem}.page-frame .vp-side{grid-template-columns:minmax(0,1fr)}.ba-stage{margin:0 0 1.2rem}.wipe{height:clamp(220px,30vh,290px)}.deltas dd{font-size:30px}.why{padding-top:1.1rem}.checks-sub{margin:0 0 1.1rem}.step-card{min-height:0;padding:1.3rem}.step-copy h3{font-size:26px}.flow-bar{margin:.2rem 0 1.1rem}.res-grid{margin-top:1rem}.impact-lead{font-size:clamp(22px,2vw,30px)}.ex{margin:1.2rem 0}.page-body .map-grid{margin-top:.4rem}@media (max-width:899px){.app[data-span="1"] .side{grid-area:3/1/span 2;padding:6px}}.ghost-btn,.chip-btn,.tool,.seg button{min-height:36px}.primary-btn,.btn,.vp-nav .ghost-btn{min-height:40px}.btn-sm{min-height:36px}.icon-btn{width:34px;height:34px}.head{padding-top:0}.head-tools .ghost-btn{min-height:34px}.panel-kicker{color:var(--dim);margin-bottom:.45rem;display:block}.panel-title{margin-bottom:.9rem;font-size:28px;line-height:1.12}.panel-inner{padding:1.4rem 1.4rem 2.4rem}.panel p{text-wrap:pretty;max-width:62ch}.panel p+p{margin-top:.7rem}.panel .muted,.panel p.muted{font-size:14.5px;line-height:1.55}.btn-row{margin:1rem 0 .4rem}.parts{margin-top:1rem}.stages li,.part,.cands li,.gauge,.map-row,.aids li,.ex-card,.three li,.res-table,.ba-block,.how,.limit,.facts li,.modelcard,.kv{border-radius:12px}.tour-note{border-radius:12px;margin:.8rem .7rem 0;padding:.75rem .85rem}.tour-note p{margin-bottom:.55rem;font-size:12.5px;line-height:1.45}.tn-head{margin-bottom:.3rem}.tn-head strong{font-size:14px}.rail-sec{padding:.9rem .7rem .6rem}.label{margin-bottom:.4rem;padding-left:.4rem}.chap{min-height:38px}.rail-keys{background:linear-gradient(180deg, transparent, var(--surface) 40%);margin-top:auto;padding:1rem 1rem .8rem;font-size:12px;position:sticky;bottom:0}.banner{padding:.4rem 1.1rem}.vp-head{padding:1rem 1.4rem .95rem}.vp-kicker{margin-bottom:.4rem}.vp-text{text-wrap:pretty;max-width:58ch;font-size:14.5px}.vp-foot{padding:.65rem 1.4rem}.tip{font-size:13px}.vp-canvas{box-shadow:inset 0 1px 0 var(--line)}.rail,.side,.page-body,.term,.paper-text{scrollbar-width:thin;scrollbar-color:#ffffff2e transparent}.rail::-webkit-scrollbar{width:8px}.side::-webkit-scrollbar{width:8px}.rail::-webkit-scrollbar-thumb{background:#ffffff29;border-radius:8px}.side::-webkit-scrollbar-thumb{background:#ffffff29;border-radius:8px}.stage-time,.res-table td,.deltas dd,.gauge-value,.dock-num,.step-label b{font-variant-numeric:tabular-nums}.chap,.part,.map-row,.opt,.flow-node,.tool,.ghost-btn,.primary-btn,.btn,.icon-btn{transition:background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease), transform .15s var(--ease), box-shadow .2s var(--ease)}.primary-btn:hover:not(:disabled){box-shadow:0 6px 22px #6ea8ff47}.ghost-btn:active,.tool:active,.icon-btn:active{transform:translateY(1px)}.part:hover{border-color:var(--muted);transform:none}.map-row:hover{transform:none}.veil-bar{border-radius:2px;width:10rem;height:3px}.veil-bar i{border-radius:2px;box-shadow:0 0 14px #6ea8ffb3}.page-body h3{letter-spacing:-.01em}.res-table caption,.ba h3,.sub-h,.how h3,.three h3,.credits h3{font-size:24px}.res-table caption{padding-bottom:.6rem}.three li,.facts li{line-height:1.5}.credits ul,.credits p{max-width:62ch}@media (max-width:899px){.panel-title{font-size:24px}.tour-note{display:none}}.lrn{--pad:max(2.4cqh, 14px);background:var(--l-bg);width:100%;height:100%;color:var(--l-fg);font-family:var(--font-learner);text-align:left;outline-offset:-4px;flex-direction:column;font-style:normal;line-height:1.6;display:flex;position:relative;overflow:hidden;container-type:size}.lrn *{font-style:normal}.lrn-screen{min-height:0;padding:var(--pad);gap:calc(var(--pad) * .8);flex-direction:column;flex:1;display:flex;overflow-y:auto}.lrn-gear{top:calc(var(--pad) * .6);right:calc(var(--pad) * .6);z-index:3;background:var(--l-secondary-bg);width:64px;height:64px;color:var(--l-secondary-fg);border:3px solid var(--l-border);border-radius:16px;place-items:center;font-size:26px;display:grid;position:absolute}.lrn-center{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:2cqh;display:flex}.lrn-title{font-size:max(5cqh, min(8cqh, 7cqw) * var(--l-scale));font-weight:700;line-height:1.25}.lrn-title-s{font-size:max(5cqh, 6cqh * var(--l-scale))}.lrn-sub{font-size:max(5cqh, min(6cqh, 5cqw) * var(--l-scale));color:var(--l-soft)}.lrn-pic{object-fit:contain;background:#fff;border-radius:18px;flex:none;width:min(38cqh,38cqw);height:min(38cqh,38cqw);padding:6px}.lrn-pic-hero{width:min(34cqh,40cqw);height:min(34cqh,40cqw)}.lrn-pic-small{width:min(26cqh,26cqw);height:min(26cqh,26cqw)}.lrn-read,.lrn-quiz{flex-direction:column;flex:1;justify-content:center;align-items:flex-start;gap:2.5cqh;min-height:0;padding-right:0;display:flex}.lrn-read{padding-top:4cqh}@container (aspect-ratio>=1.15){.lrn-read,.lrn-quiz{flex-direction:row;align-items:center;gap:4cqw}}.lrn-sentence{font-size:max(5cqh, min(8cqh, 7cqw) * var(--l-scale));max-width:28em;font-weight:400;line-height:1.55}.lrn-question{font-weight:700}.lrn-key{background:var(--l-key-bg);color:var(--l-key-fg);text-underline-offset:.14em;border-radius:.2em;padding:0 .18em;font-weight:700;text-decoration:underline;text-decoration-thickness:.09em}.lrn-btn{border:3px solid var(--l-border);background:var(--l-secondary-bg);min-width:64px;min-height:max(64px,13cqh);color:var(--l-secondary-fg);font-family:inherit;font-size:max(5cqh, 5.5cqh * var(--l-scale));border-radius:18px;justify-content:center;align-items:center;gap:.5em;padding:0 1.2em;font-weight:700;display:inline-flex}.lrn-btn:hover{filter:brightness(.96)}.lrn-btn:focus-visible{outline:4px solid var(--l-primary-bg);outline-offset:3px;box-shadow:0 0 0 3px var(--l-bg)}.lrn-primary{background:var(--l-primary-bg);color:var(--l-primary-fg);border-color:var(--l-primary-bg)}.lrn-big{min-height:max(80px,18cqh);padding:0 2em}.lrn-nav{flex:none;justify-content:space-between;gap:max(16px,3cqw);display:flex}.lrn-nav-center{justify-content:center}.lrn-nav>.lrn-btn{flex:1 1 0;max-width:18em}.lrn-dots{flex:none;justify-content:center;gap:max(10px,1.4cqw);padding:1cqh 0;display:flex}.lrn-dotp{border:3px solid var(--l-fg);background:0 0;border-radius:50%;width:max(14px,2.6cqh);height:max(14px,2.6cqh)}.lrn-dotp[data-state=done]{background:var(--l-fg)}.lrn-dotp[data-state=now]{background:var(--l-key-bg);transform:scale(1.35)}.lrn-answers{flex:none;grid-template-columns:1fr 1fr;gap:max(16px,3cqw);display:grid}@container (aspect-ratio<=.8){.lrn-answers{grid-template-columns:1fr}}.lrn-answer{min-height:max(80px,20cqh);font-size:max(5.5cqh, 6.5cqh * var(--l-scale));text-align:center;flex-wrap:wrap;line-height:1.25}.lrn-feedback{min-height:0;padding:calc(var(--pad) * 1.3);border-radius:24px;flex-direction:column;flex:1;justify-content:center;gap:2cqh;display:flex}.lrn-feedback.is-good{background:var(--l-good-bg);color:var(--l-good-fg)}.lrn-feedback.is-look{background:var(--l-look-bg);color:var(--l-look-fg)}.lrn-fb-head{font-size:max(5cqh, min(8cqh, 7cqw) * var(--l-scale));align-items:center;gap:.5em;display:flex}.lrn-fb-head h2{font-size:inherit}.lrn-fb-icon{flex:none;width:1.2em;height:1.2em}.lrn-fb-sentence{font-size:max(5cqh, min(7cqh, 6cqw) * var(--l-scale))}.lrn-feedback .lrn-key{background:var(--l-key-bg);color:var(--l-key-fg)}.is-good .lrn-key{outline:3px solid var(--l-good-fg)}.lrn-steps{font-size:max(5cqh, 6cqh * var(--l-scale));text-align:left;gap:1.6cqh;margin:0;padding:0;list-style:none;display:grid}.lrn-steps li{color:var(--l-soft);align-items:center;gap:.6em;display:flex}.lrn-steps li[data-state=active]{color:var(--l-fg);font-weight:700}.lrn-steps li[data-state=done]{color:var(--l-fg)}.lrn-step-icon{place-items:center;width:1.3em;height:1.3em;display:grid}.lrn-dot-spin{opacity:.55;border:3px solid;border-radius:50%;width:.7em;height:.7em}.lrn-steps li[data-state=active] .lrn-dot-spin{opacity:1;animation:1.4s ease-in-out infinite lrn-pulse}@keyframes lrn-pulse{50%{transform:scale(1.35)}}.lrn-done-icon{width:min(24cqh,24cqw);height:min(24cqh,24cqw);color:var(--l-good-bg)}.lrn-overlay{z-index:5;background:var(--l-bg);padding:var(--pad);padding-top:calc(var(--pad) + 4px);flex-direction:column;gap:2cqh;display:flex;position:absolute;top:0;bottom:0;left:0;right:0;overflow-y:auto}.lrn-fieldset{border:0;margin:0;padding:0}.lrn-fieldset legend{font-size:max(4.6cqh, 5cqh * var(--l-scale));padding:0 0 1cqh;font-weight:700}.lrn-seg{flex-wrap:wrap;gap:12px;display:flex}.lrn-seg-btn{flex:8em;font-size:5cqh}.lrn-seg-btn[aria-pressed=true]{background:var(--l-primary-bg);color:var(--l-primary-fg);border-color:var(--l-primary-bg)}.lrn-about-text{font-size:max(4.6cqh, 4.8cqh * var(--l-scale));gap:1.2cqh;max-width:36em;display:grid}.lrn-about-text p{line-height:1.5}@media (prefers-reduced-motion:reduce){.lrn-dot-spin{animation:none!important}}
