:root{color-scheme:light dark}:root[data-theme=light]{color-scheme:light}:root[data-theme=dark]{color-scheme:dark}:root{--acc: var(--c-blue);--bg: var(--c-base);--bg-2: var(--c-mantle);--bg-3: var(--c-crust);--card: light-dark(color-mix(in oklab, var(--c-base) 35%, #fff), color-mix(in oklab, var(--c-base) 70%, var(--c-surface0)));--card-2: light-dark(color-mix(in oklab, var(--c-mantle) 60%, #fff), var(--c-mantle));--ink: var(--c-text);--ink-2: var(--c-subtext1);--ink-3: var(--c-subtext0);--ink-4: var(--c-overlay1);--line: light-dark(color-mix(in oklab, var(--c-surface0) 75%, var(--c-base)), var(--c-surface0));--line-2: var(--c-surface1);--link: light-dark(color-mix(in oklab, var(--c-blue) 88%, black), var(--c-blue));--acc-ink: light-dark(color-mix(in oklab, var(--acc) 70%, black), var(--acc));--acc-soft: color-mix(in oklab, var(--acc) 14%, transparent);--acc-line: color-mix(in oklab, var(--acc) 42%, transparent);--shadow-1: 0 1px 2px light-dark(rgb(76 79 105 / .08), rgb(0 0 0 / .35));--shadow-2: 0 10px 30px -12px light-dark(rgb(76 79 105 / .28), rgb(0 0 0 / .6)), 0 2px 6px light-dark(rgb(76 79 105 / .06), rgb(0 0 0 / .3));--shadow-3: 0 30px 80px -20px light-dark(rgb(76 79 105 / .38), rgb(0 0 0 / .75));--glass: light-dark(rgb(255 255 255 / .62), rgb(30 30 46 / .58));--font-sans: "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", system-ui, sans-serif;--font-mono: "JetBrains Mono", "Cascadia Code", "Cascadia Mono", "SF Mono", Consolas, monospace;--font-display: "HarmonyOS Sans SC", "MiSans", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei UI", sans-serif;--top-h: 3.6rem;--side-w: 17rem;--rail-w: 14.5rem;--measure: 48rem;--radius: 14px;--radius-sm: 9px;--ease-out: cubic-bezier(.16, 1, .3, 1);--ease-spring: cubic-bezier(.34, 1.56, .64, 1);--ease-in-out: cubic-bezier(.65, 0, .35, 1);--t-fast: .16s;--t-med: .32s;--t-slow: .76s;--z-rail: 5;--z-top: 40;--z-side: 50;--z-fab: 45;--z-overlay: 80;--z-curtain: 100}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--top-h) + 1.5rem);background:var(--bg)}body{margin:0;min-height:100dvh;color:var(--ink);background:radial-gradient(60rem 40rem at 110% -10%,color-mix(in oklab,var(--acc) 9%,transparent),transparent 60%),radial-gradient(50rem 40rem at -10% 120%,color-mix(in oklab,var(--c-mauve) 7%,transparent),transparent 60%),var(--bg);background-attachment:fixed;font-family:var(--font-sans);font-size:1.0313rem;line-height:1.85;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;font-feature-settings:"palt" 0}::selection{background:color-mix(in oklab,var(--acc) 32%,transparent)}a{color:var(--link);text-decoration:none}.article a:not([class]),.home a.text-link,.lab-note a,.login-legal a,.side-foot a{background:linear-gradient(currentColor,currentColor) 0 100% / 0 1.5px no-repeat,linear-gradient(color-mix(in oklab,currentColor 30%,transparent),color-mix(in oklab,currentColor 30%,transparent)) 0 100% / 100% 1px no-repeat;transition:background-size var(--t-med) var(--ease-out),color var(--t-fast);padding-bottom:1px}.article a:not([class]):hover,.home a.text-link:hover,.lab-note a:hover,.login-legal a:hover,.side-foot a:hover{background-size:100% 1.5px,100% 1px}:focus-visible{outline:2px solid var(--acc);outline-offset:3px;border-radius:6px}kbd{display:inline-block;min-width:1.5em;padding:0 .38em;font-family:var(--font-mono);font-size:.75em;line-height:1.6;text-align:center;color:var(--ink-2);background:var(--card);border:1px solid var(--line-2);border-bottom-width:2px;border-radius:5px}.i{flex:none;display:inline-block;vertical-align:-.18em}.skip{position:fixed;left:1rem;top:-4rem;z-index:200;padding:.6rem 1rem;border-radius:10px;background:var(--acc);color:var(--c-base);font-weight:600;transition:top var(--t-med) var(--ease-out)}.skip:focus{top:1rem}[hidden]{display:none!important}.curtain{position:fixed;inset:0;z-index:var(--z-curtain);display:grid;grid-template-columns:repeat(3,1fr);pointer-events:none}.curtain span{transform:scaleY(0);transform-origin:50% 100%;background:var(--acc)}.curtain span:nth-child(2){background:color-mix(in oklab,var(--acc) 70%,var(--c-mauve))}.curtain span:nth-child(3){background:color-mix(in oklab,var(--acc) 50%,var(--c-blue))}html.leaving .curtain span{animation:curtain-in .42s var(--ease-in-out) forwards}html.leaving .curtain span:nth-child(2){animation-delay:60ms}html.leaving .curtain span:nth-child(3){animation-delay:.12s}html.arriving .curtain span{transform:scaleY(1);transform-origin:50% 0;animation:curtain-out .62s var(--ease-in-out) 80ms forwards}html.arriving .curtain span:nth-child(2){animation-delay:.15s}html.arriving .curtain span:nth-child(3){animation-delay:.22s}@keyframes curtain-in{to{transform:scaleY(1)}}@keyframes curtain-out{0%{transform:scaleY(1)}to{transform:scaleY(0)}}.progress{position:fixed;inset:0 0 auto;z-index:calc(var(--z-top) + 1);height:3px;pointer-events:none}.progress span{display:block;height:100%;transform-origin:0 50%;transform:scaleX(var(--p, 0));background:linear-gradient(90deg,var(--c-mauve),var(--c-blue),var(--c-teal),var(--c-green),var(--c-yellow),var(--c-peach));box-shadow:0 0 12px color-mix(in oklab,var(--acc) 60%,transparent)}.topbar{position:sticky;top:0;z-index:var(--z-top);display:flex;align-items:center;gap:.75rem;height:var(--top-h);padding:0 clamp(.75rem,2.5vw,1.5rem);background:var(--glass);-webkit-backdrop-filter:saturate(1.6) blur(16px);backdrop-filter:saturate(1.6) blur(16px);border-bottom:1px solid color-mix(in oklab,var(--line) 80%,transparent)}.brand{display:flex;align-items:center;gap:.6rem;color:var(--ink);font-weight:700;letter-spacing:.01em;white-space:nowrap}.brand-mark{width:30px;height:30px;border-radius:9px;box-shadow:0 6px 18px -6px color-mix(in oklab,var(--c-blue) 70%,transparent)}.bm-cam{transform-origin:16px 16px;animation:spin 14s linear infinite}.brand:hover .bm-cam{animation-duration:2.4s}.brand-text{font-size:.95rem}.crumbs{display:flex;align-items:center;gap:.35rem;min-width:0;color:var(--ink-3);font-size:.875rem}.crumb-sep{display:inline-flex;opacity:.6}.crumb-cur{display:inline-flex;align-items:baseline;gap:.45rem;min-width:0;color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.crumb-cur b{font-family:var(--font-mono);font-size:.75rem;color:var(--acc-ink);font-weight:600}.topbar-actions{margin-left:auto;display:flex;align-items:center;gap:.4rem}.icon-btn{position:relative;display:inline-grid;place-items:center;width:2.4rem;height:2.4rem;padding:0;color:var(--ink-2);background:transparent;border:1px solid transparent;border-radius:11px;cursor:pointer;transition:background var(--t-fast),color var(--t-fast),border-color var(--t-fast),transform var(--t-fast) var(--ease-out)}.icon-btn:hover{color:var(--ink);background:var(--card);border-color:var(--line)}.icon-btn:active{transform:scale(.92)}.search-btn{display:inline-flex;align-items:center;gap:.55rem;height:2.4rem;padding:0 .55rem 0 .8rem;font:inherit;font-size:.875rem;color:var(--ink-3);background:var(--card);border:1px solid var(--line);border-radius:11px;cursor:pointer;min-width:13rem;box-shadow:var(--shadow-1);transition:border-color var(--t-fast),color var(--t-fast),box-shadow var(--t-med)}.search-btn span{flex:1;text-align:left}.search-btn:hover{color:var(--ink);border-color:var(--acc-line);box-shadow:0 0 0 4px var(--acc-soft)}.theme-btn .i{position:absolute;transition:transform .52s var(--ease-spring),opacity var(--t-med)}.theme-btn .sun{transform:rotate(-90deg) scale(0);opacity:0}:root[data-theme=dark] .theme-btn .sun{transform:none;opacity:1}:root[data-theme=dark] .theme-btn .moon{transform:rotate(90deg) scale(0);opacity:0}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) .theme-btn .sun{transform:none;opacity:1}:root:not([data-theme=light]) .theme-btn .moon{transform:rotate(90deg) scale(0);opacity:0}}.account{display:flex;align-items:center}.account-login{display:inline-flex;align-items:center;gap:.4rem;height:2.4rem;padding:0 .9rem;font-size:.875rem;font-weight:600;color:var(--c-base);background:linear-gradient(135deg,var(--c-blue),var(--c-mauve));border-radius:11px;box-shadow:0 8px 20px -10px var(--c-blue);transition:transform var(--t-fast) var(--ease-out),box-shadow var(--t-med)}.account-login:hover{transform:translateY(-1px);box-shadow:0 12px 26px -10px var(--c-mauve)}.account-user{display:flex;align-items:center;gap:.45rem;padding-left:.35rem;border-left:1px solid var(--line);margin-left:.2rem}.avatar{display:grid;place-items:center;width:2rem;height:2rem;border-radius:50%;font-size:.8rem;font-weight:700;color:var(--c-base);background:conic-gradient(from 200deg,var(--c-mauve),var(--c-blue),var(--c-teal),var(--c-mauve))}.account-name{max-width:7rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.875rem;color:var(--ink-2)}.shell{display:grid;grid-template-columns:var(--side-w) minmax(0,1fr);align-items:start}.sidebar{position:sticky;top:var(--top-h);height:calc(100dvh - var(--top-h));display:flex;flex-direction:column;padding:1.1rem .8rem 1rem;overflow-y:auto;overscroll-behavior:contain;border-right:1px solid var(--line);background:color-mix(in oklab,var(--bg-2) 55%,transparent);scrollbar-width:thin}.side-head{display:none;align-items:center;justify-content:space-between;padding:0 .4rem .6rem;font-weight:700}.side-list{list-style:none;margin:0;padding:0;display:grid;gap:2px}.side-item>a{position:relative;display:grid;grid-template-columns:1.9rem 2.3rem 1fr;align-items:center;padding:.45rem .55rem;color:var(--ink-2);font-size:.9rem;border-radius:10px;transition:background var(--t-fast),color var(--t-fast),transform var(--t-med) var(--ease-out)}.side-item>a:hover{color:var(--ink);background:var(--card);transform:translate(2px)}.side-ic{display:grid;place-items:center;width:1.6rem;height:1.6rem;border-radius:8px;color:var(--acc-ink);background:var(--acc-soft);transition:transform var(--t-med) var(--ease-spring),background var(--t-fast),color var(--t-fast)}.side-item>a:hover .side-ic{transform:rotate(-8deg) scale(1.08)}.side-no{font-family:var(--font-mono);font-size:.72rem;color:var(--ink-4)}.side-item.is-current>a{color:var(--ink);font-weight:650;background:var(--card);box-shadow:var(--shadow-1),inset 0 0 0 1px var(--acc-line)}.side-item.is-current .side-ic{color:var(--c-base);background:var(--acc)}.side-item.is-current .side-no{color:var(--acc-ink)}.side-sub{list-style:none;margin:.3rem 0 .6rem 1.45rem;padding:0 0 0 .9rem;border-left:1px dashed var(--line-2)}.side-sub a{position:relative;display:block;padding:.28rem .5rem;font-size:.84rem;line-height:1.5;color:var(--ink-3);border-radius:7px;transition:color var(--t-fast),background var(--t-fast)}.side-sub a:before{content:"";position:absolute;left:calc(-.9rem - 4px);top:50%;width:7px;height:7px;margin-top:-3.5px;border-radius:50%;background:var(--bg);border:1.5px solid var(--line-2);transition:background var(--t-fast),border-color var(--t-fast),transform var(--t-med) var(--ease-spring)}.side-sub a:hover{color:var(--ink);background:color-mix(in oklab,var(--card) 70%,transparent)}.side-sub a.is-active{color:var(--acc-ink);font-weight:600}.side-sub a.is-active:before{background:var(--acc);border-color:var(--acc);transform:scale(1.35);box-shadow:0 0 0 4px var(--acc-soft)}.side-foot{margin-top:auto;padding:1rem .5rem 0;font-size:.75rem;line-height:1.7;color:var(--ink-4)}.side-foot p{margin:.3rem 0}.side-foot kbd{margin-right:2px}.side-foot a{color:var(--ink-3)}.scrim{display:none}.page{min-width:0}.page-body{display:grid;grid-template-columns:minmax(0,var(--measure)) var(--rail-w);justify-content:center;gap:clamp(2rem,4vw,4rem);padding:0 clamp(1rem,4vw,3rem) 6rem}.article{min-width:0}.rail{position:sticky;top:calc(var(--top-h) + 1.5rem);align-self:start;z-index:var(--z-rail)}.rail-inner{padding:1rem;border:1px solid var(--line);border-radius:var(--radius);background:color-mix(in oklab,var(--card) 72%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:var(--shadow-1)}.rail-head{display:flex;align-items:center;gap:.75rem;margin-bottom:.6rem}.rail-ring{position:relative;width:2.6rem;height:2.6rem;flex:none}.rail-ring svg{width:100%;height:100%;transform:rotate(-90deg)}.rail-ring circle{fill:none;stroke-width:3.2}.ring-bg{stroke:var(--line)}.ring-fg{stroke:var(--acc);stroke-linecap:round;stroke-dasharray:100;stroke-dashoffset:calc(100 - var(--p, 0) * 100);transition:stroke-dashoffset .2s linear}.rail-title{margin:0;font-size:.82rem;font-weight:700}.rail-pct{margin:0;font-size:.72rem;color:var(--ink-3);font-family:var(--font-mono)}.rail-list{position:relative;list-style:none;margin:0;padding:0}.rail-pill{position:absolute;left:0;right:0;top:0;z-index:-1;height:var(--pill-h, 0);transform:translateY(var(--pill-y, 0));border-radius:8px;background:var(--acc-soft);box-shadow:inset 2px 0 0 var(--acc);transition:transform .42s var(--ease-out),height .42s var(--ease-out),opacity var(--t-fast);opacity:var(--pill-o, 0);pointer-events:none}.rail-list a{display:block;padding:.32rem .6rem;font-size:.82rem;line-height:1.5;color:var(--ink-3);border-radius:8px;transition:color var(--t-fast)}.rail-list a:hover{color:var(--ink)}.rail-list a.is-active{color:var(--acc-ink);font-weight:600}.rail-actions{display:grid;gap:.35rem;margin-top:.9rem;padding-top:.8rem;border-top:1px solid var(--line)}.rail-actions>*{display:flex;align-items:center;gap:.45rem;padding:.4rem .55rem;font:inherit;font-size:.8rem;color:var(--ink-2);text-align:left;background:transparent;border:0;border-radius:8px;cursor:pointer;transition:background var(--t-fast),color var(--t-fast)}.rail-actions>*:hover{background:var(--bg-2);color:var(--ink)}.hero{position:relative;isolation:isolate;overflow:hidden;margin:clamp(.75rem,2vw,1.5rem) clamp(.75rem,2.5vw,1.75rem) 2.5rem;padding:clamp(2.4rem,5vw,4.2rem) clamp(1.4rem,5vw,4rem) clamp(2.2rem,4vw,3.4rem);border-radius:22px;border:1px solid color-mix(in oklab,var(--acc) 26%,var(--line));background:linear-gradient(140deg,color-mix(in oklab,var(--acc) 16%,var(--card)),var(--card) 55%,color-mix(in oklab,var(--c-mauve) 10%,var(--card)));box-shadow:var(--shadow-2)}.hero-mesh{position:absolute;inset:-20%;z-index:-2;opacity:.8;pointer-events:none}.hero-mesh i{--k: var(--acc);position:absolute;width:55%;aspect-ratio:1;border-radius:50%;opacity:.5;background:radial-gradient(closest-side,var(--k),color-mix(in oklab,var(--k) 40%,transparent) 45%,transparent);will-change:transform;animation:drift 22s var(--ease-in-out) infinite alternate}.hero-mesh i:nth-child(1){left:50%;top:0}.hero-mesh i:nth-child(2){--k: var(--c-mauve);left:65%;top:35%;animation-duration:28s;animation-delay:-6s}.hero-mesh i:nth-child(3){--k: var(--c-blue);left:25%;top:50%;opacity:.32;animation-duration:32s;animation-delay:-12s}.hero-mesh i:nth-child(4){--k: color-mix(in oklab, var(--acc) 50%, var(--c-teal));left:0;top:-15%;opacity:.28;animation-duration:26s;animation-delay:-3s}@keyframes drift{0%{transform:translate(0) scale(1)}50%{transform:translate(-12%,8%) scale(1.15)}to{transform:translate(8%,-10%) scale(.9)}}.hero-grid{position:absolute;inset:0;z-index:-1;opacity:.5;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:32px 32px;-webkit-mask-image:radial-gradient(70% 90% at 80% 40%,#000,transparent 75%);mask-image:radial-gradient(70% 90% at 80% 40%,#000,transparent 75%)}.hero-deco{position:absolute;right:-3%;bottom:-10%;z-index:-1;width:min(46%,560px);height:auto;overflow:visible;-webkit-mask-image:linear-gradient(90deg,transparent,#000 35%);mask-image:linear-gradient(90deg,transparent,#000 35%)}.deco-route-bg{fill:none;stroke:color-mix(in oklab,var(--acc) 22%,transparent);stroke-width:14;stroke-linecap:round}.deco-route{fill:none;stroke:var(--acc);stroke-width:2.2;stroke-linecap:round;stroke-dasharray:1;stroke-dashoffset:1;animation:draw 2.6s var(--ease-out) .35s forwards}.deco-cam path:first-child{fill:color-mix(in oklab,var(--card) 70%,transparent);stroke:var(--acc);stroke-width:2}.deco-cam circle{fill:var(--acc)}.deco-spoke{stroke:var(--acc);stroke-width:2;stroke-dasharray:3 4;fill:none}.deco-cam{transform-box:view-box;animation:spin 16s linear infinite}.deco-dot{fill:var(--card);stroke:var(--acc);stroke-width:3;filter:drop-shadow(0 0 6px var(--acc))}@keyframes draw{to{stroke-dashoffset:0}}@keyframes spin{to{transform:rotate(360deg)}}.hero-inner{position:relative;max-width:min(44rem,62%)}.hero-kicker{display:flex;align-items:center;gap:.6rem;margin:0 0 1.1rem;font-size:.85rem;font-weight:600;color:var(--acc-ink)}.hero-badge{display:grid;place-items:center;width:2.2rem;height:2.2rem;border-radius:11px;color:var(--c-base);background:var(--acc);box-shadow:0 10px 24px -10px var(--acc)}.hero-sep{width:1.6rem;height:1px;background:currentColor;opacity:.4}.hero-title,.home-title{margin:0;font-family:var(--font-display);font-size:clamp(2rem,1.2rem + 3.4vw,3.5rem);line-height:1.12;font-weight:800;letter-spacing:-.02em;text-wrap:balance}.hero-sub{margin:1.1rem 0 0;max-width:40rem;font-size:clamp(1rem,.95rem + .2vw,1.1rem);line-height:1.85;color:var(--ink-2)}.hero-chips{display:flex;flex-wrap:wrap;gap:.5rem;margin:1.6rem 0 0;padding:0;list-style:none}.hero-chips li{display:inline-flex;align-items:center;gap:.4rem;padding:.3rem .75rem;font-size:.8rem;color:var(--ink-2);background:var(--glass);border:1px solid var(--line);border-radius:999px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.hero-chips .i{color:var(--acc-ink)}.hero-no{position:absolute;right:clamp(.5rem,3vw,2.5rem);top:clamp(.5rem,2vw,1.5rem);width:clamp(7rem,16vw,12rem);z-index:-1}.hero-no text{font-family:var(--font-mono);font-size:140px;font-weight:800;fill:transparent;stroke:color-mix(in oklab,var(--acc) 55%,transparent);stroke-width:1.4;stroke-dasharray:600;stroke-dashoffset:600;animation:draw-no 2.2s var(--ease-out) .2s forwards,fill-no 1.2s ease 1.6s forwards}@keyframes draw-no{to{stroke-dashoffset:0}}@keyframes fill-no{to{fill:color-mix(in oklab,var(--acc) 10%,transparent)}}[data-split] .ch{display:inline-block;white-space:pre}html.js [data-split].is-split .ch{opacity:0;transform:translateY(.55em) rotate(4deg);filter:blur(8px);animation:char-in .9s var(--ease-out) forwards;animation-delay:calc(var(--ci) * 34ms + .12s)}@keyframes char-in{to{opacity:1;transform:none;filter:blur(0)}}html.js .hero-sub,html.js .hero-chips li,html.js .hero-kicker{animation:rise .9s var(--ease-out) both}html.js .hero-kicker{animation-delay:60ms}html.js .hero-sub{animation-delay:.42s}html.js .hero-chips li{animation-delay:calc(.6s + var(--li, 0) * 70ms)}@keyframes rise{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}.section{padding-top:1rem;margin-bottom:4.5rem}.sprite{position:absolute;width:0;height:0;overflow:hidden}.section>h2{position:relative;display:flex;align-items:center;gap:.85rem;margin:0 0 .5rem;font-family:var(--font-display);font-size:clamp(1.4rem,1.1rem + 1vw,1.85rem);line-height:1.3;font-weight:750;letter-spacing:-.01em}.h2-no{flex:none;display:grid;place-items:center;width:2.5rem;height:2.5rem;border-radius:12px;font-family:var(--font-mono);font-size:.9rem;font-weight:700;color:var(--acc-ink);background:var(--acc-soft);box-shadow:inset 0 0 0 1px 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1.1rem;font:inherit;font-size:.9rem;font-weight:700;color:var(--c-base);background:linear-gradient(135deg,var(--c-pink),var(--c-mauve));border:0;border-radius:12px;cursor:pointer;box-shadow:0 12px 26px -12px var(--c-pink);transition:transform var(--t-fast) var(--ease-out),opacity var(--t-fast)}.play:hover{transform:translateY(-1px)}.play:active{transform:scale(.96)}.play:disabled{opacity:.45;cursor:not-allowed}.play .i-pause{display:none}.play[aria-pressed=true] .i-pause{display:inline-block}.play[aria-pressed=true] .i-play{display:none}.scrub output{font-family:var(--font-mono);font-weight:700;min-width:3.5rem;text-align:right}.lab-btn{display:inline-flex;align-items:center;gap:.6rem;min-height:2.6rem;padding:0 1.1rem;font:inherit;font-size:.86rem;font-weight:600;color:var(--ink-2);background:var(--card);border:1px solid var(--line);border-radius:11px;cursor:pointer;transition:border-color var(--t-fast),color var(--t-fast),transform 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var(--top-h))}.auth-art{position:relative;isolation:isolate;overflow:hidden;display:flex;flex-direction:column;justify-content:center;padding:clamp(2rem,6vw,5rem);border-right:1px solid var(--line)}.auth-art .hero-mesh{inset:-10%;opacity:.85}.auth-art .hero-mesh i:nth-child(1){--k: var(--c-mauve)}.auth-art .hero-mesh i:nth-child(2){--k: var(--c-blue)}.auth-art .hero-mesh i:nth-child(3){--k: var(--c-teal)}.auth-art h1{margin:0;font-size:clamp(2rem,1.3rem + 2.6vw,3.4rem);line-height:1.12;font-weight:800;letter-spacing:-.02em}.auth-art>p{margin:1.1rem 0 0;max-width:32rem;color:var(--ink-2);font-size:1.05rem;line-height:1.85}.auth-points{list-style:none;margin:2rem 0 0;padding:0;display:grid;gap:.7rem;max-width:30rem}.auth-points li{display:grid;grid-template-columns:2.4rem 1fr;gap:.8rem;align-items:center;padding:.7rem .9rem;background:var(--glass);border:1px solid var(--line);border-radius:14px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);animation:rise .8s var(--ease-out) both;animation-delay:calc(.3s + var(--i) * .11s)}.auth-points .ic{display:grid;place-items:center;width:2.4rem;height:2.4rem;border-radius:11px;color:var(--c-base);background:var(--k)}.auth-points b{display:block;font-size:.92rem}.auth-points span{font-size:.82rem;color:var(--ink-3)}.auth-404{grid-template-columns:1fr}.auth-404 .auth-art{border:0;align-items:flex-start}.actions-404{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1.8rem}.auth-form-wrap{display:grid;place-items:center;padding:clamp(1.5rem,5vw,4rem) clamp(1rem,4vw,3rem)}.auth-card{width:min(27rem,100%);padding:1.8rem;background:var(--card);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-3);animation:pop .6s var(--ease-spring) both}.auth-card h2{margin:0 0 .3rem;font-size:1.45rem;font-weight:800}.auth-card .sub{margin:0 0 1.4rem;font-size:.9rem;color:var(--ink-3)}.auth-card .seg{display:grid;grid-template-columns:1fr 1fr;margin-bottom:1.4rem;width:100%}.field{display:grid;gap:.35rem;margin-bottom:1rem}.field label{font-size:.85rem;font-weight:650;color:var(--ink-2)}.field .hint{font-size:.76rem;color:var(--ink-3)}.input{position:relative;display:flex;align-items:center}.input .i{position:absolute;left:.85rem;color:var(--ink-4);pointer-events:none;transition:color var(--t-fast)}.input input{width:100%;height:2.9rem;padding:0 .9rem 0 2.6rem;font:inherit;font-size:.95rem;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:12px;outline:0;transition:border-color var(--t-fast),box-shadow var(--t-med),background var(--t-fast)}.input input:focus{border-color:var(--acc);box-shadow:0 0 0 4px var(--acc-soft);background:var(--card)}.input:focus-within .i{color:var(--acc-ink)}.input input[aria-invalid=true]{border-color:var(--c-red);box-shadow:0 0 0 4px color-mix(in oklab,var(--c-red) 14%,transparent)}.reveal-pw{position:absolute;right:.35rem}.form-error{display:flex;gap:.5rem;align-items:start;margin:0 0 1rem;padding:.7rem .85rem;font-size:.86rem;line-height:1.6;color:light-dark(color-mix(in oklab,var(--c-red) 80%,black),var(--c-red));background:color-mix(in oklab,var(--c-red) 10%,var(--card));border:1px solid color-mix(in oklab,var(--c-red) 35%,var(--line));border-radius:11px;animation:shake .42s var(--ease-out)}.form-ok{color:light-dark(color-mix(in oklab,var(--c-green) 70%,black),var(--c-green));background:color-mix(in oklab,var(--c-green) 12%,var(--card));border-color:color-mix(in oklab,var(--c-green) 35%,var(--line));animation:none}@keyframes shake{20%{transform:translate(-6px)}40%{transform:translate(5px)}60%{transform:translate(-3px)}80%{transform:translate(2px)}}.submit{width:100%;justify-content:center;min-height:3rem}.submit .spinner{display:none;width:1.1rem;height:1.1rem;border-radius:50%;border:2px solid currentColor;border-right-color:transparent;animation:spin .7s linear infinite}.submit[aria-busy=true] .spinner{display:inline-block}.submit[aria-busy=true] .label-idle,.auth-panel[hidden]{display:none}.auth-panel{animation:rise .42s var(--ease-out)}.login-legal{margin:1.2rem 0 0;font-size:.78rem;line-height:1.7;color:var(--ink-3);text-align:center}.menu-btn{display:none}body[data-layout=home] .menu-btn,body[data-layout=app] .menu-btn{display:inline-grid}@media(max-width:1399px){.page-body{grid-template-columns:minmax(0,var(--measure))}.rail{display:none}}@media(max-width:1023px){.shell{display:block}.menu-btn{display:inline-grid}.crumbs{display:none}}@media(max-width:1023px){.sidebar{position:fixed;z-index:var(--z-side);top:0;left:0;height:100dvh;width:min(20rem,86vw);background:var(--card);box-shadow:var(--shadow-3);transform:translate(-104%);transition:transform .46s var(--ease-out);visibility:hidden}.side-head{display:flex}body.drawer-open .sidebar{transform:none;visibility:visible}.scrim{display:block;position:fixed;inset:0;z-index:calc(var(--z-side) - 1);border:0;background:color-mix(in oklab,var(--c-crust) 50%,transparent);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);opacity:0;pointer-events:none;transition:opacity var(--t-med)}body.drawer-open .scrim{opacity:1;pointer-events:auto}}body[data-layout=home] .sidebar,body[data-layout=app] .sidebar{position:fixed;z-index:var(--z-side);top:0;left:0;height:100dvh;width:min(20rem,86vw);background:var(--card);box-shadow:var(--shadow-3);transform:translate(-104%);transition:transform .46s var(--ease-out);visibility:hidden}body[data-layout=home] .side-head,body[data-layout=app] .side-head{display:flex}body[data-layout=home].drawer-open .sidebar,body[data-layout=app].drawer-open .sidebar{transform:none;visibility:visible}body[data-layout=home] .scrim,body[data-layout=app] .scrim{display:block;position:fixed;inset:0;z-index:calc(var(--z-side) - 1);border:0;background:color-mix(in oklab,var(--c-crust) 50%,transparent);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);opacity:0;pointer-events:none;transition:opacity var(--t-med)}body[data-layout=home].drawer-open .scrim,body[data-layout=app].drawer-open .scrim{opacity:1;pointer-events:auto}@media(max-width:1100px){.hero-inner{max-width:none}.hero-deco{opacity:.55}.lab-grid{grid-template-columns:1fr}.lab-controls{position:static}.viz,.home-hero-inner{grid-template-columns:1fr}.home-visual{max-width:30rem}}@media(max-width:900px){.bento{grid-template-columns:repeat(2,1fr)}.bc-cam{grid-row:span 1}.bc-library{grid-column:span 2}.home-stats{grid-template-columns:repeat(3,minmax(0,1fr))}.phase-track{grid-template-columns:1fr 1fr;row-gap:2rem}.phase-track:before,.phase-track:after{display:none}.info-cards,.experiments{grid-template-columns:1fr}.metrics{grid-template-columns:repeat(2,1fr)}.auth{grid-template-columns:1fr}.auth-art{border-right:0;border-bottom:1px solid var(--line);padding-block:2.5rem}}@media(max-width:640px){:root{--top-h: 3.3rem}.brand-text{display:none}.search-btn{min-width:0;padding:0;width:2.4rem;justify-content:center}.search-btn span,.search-btn kbd,.account-name,.account-login span{display:none}.account-login{padding:0 .7rem}.hero{margin-inline:.5rem;border-radius:18px}.hero-deco{opacity:.35;width:90%}.hero-inner{max-width:none}.section-deck{margin-left:0}.pager{grid-template-columns:1fr}.pg.next{grid-column:1;grid-template-columns:auto 1fr}.pg.next .pg-ic{grid-column:1}.pg.next .pg-dir,.pg.next .pg-title{grid-column:2;justify-content:flex-start;text-align:left}.bento{grid-template-columns:1fr}.bc-roadmap,.bc-lab,.bc-cam,.bc-library{grid-column:span 1}.bc-library>a{display:flex;align-items:stretch}.bc-library .bc-name{padding-top:1.4rem}.bc-library .bc-go{margin-top:1rem}.home-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.phase-track,dl.pairs{grid-template-columns:1fr}dl.pairs dd{border-top:0;padding-top:0;background:var(--card)}dl.pairs dt{border-top:1px solid var(--line)}.files{grid-template-columns:1fr}.scrub{grid-template-columns:auto 1fr}.scrub output{grid-column:2;text-align:left}.fab-top{right:.9rem;bottom:.9rem}table{font-size:.86rem}th,td{padding:.55rem .7rem}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:1ms!important;animation-iteration-count:1!important;animation-delay:0ms!important;transition-duration:1ms!important;transition-delay:0ms!important}.deco-dot,.bm-cam,.deco-cam{animation:none!important}.curtain{display:none}html.js [data-reveal],html.js [data-stagger]>*{opacity:1;transform:none}}@media print{.topbar,.sidebar,.rail,.pager,.fab-top,.curtain,.progress,.hero-mesh,.hero-deco,.hero-grid,.scrim{display:none!important}.shell,.page-body{display:block}body{background:#fff;color:#000}.hero{box-shadow:none;border:0;margin:0;padding:0 0 1rem}html.js [data-reveal],html.js [data-stagger]>*{opacity:1!important;transform:none!important}.math,.note,.table-scroll,figure{break-inside:avoid}}body[data-layout=auth] .menu-btn,body[data-layout=auth] .account,body[data-layout=auth] .search-btn{display:none!important}