/* This stylesheet is loaded only by about/ai.html. */
:root{color-scheme:dark;--ai-bg:#071217;--ai-panel:#0b1b22;--ai-hover:#102a32;--ai-text:#edf5f7;--ai-secondary:#afc2cb;--ai-muted:#819ba7;--ai-accent:#8ee7db;--ai-line:rgba(171,214,228,.17);--ai-soft:rgba(171,214,228,.08);--ai-glow:rgba(74,173,173,.13);--ai-overlay:rgba(1,8,13,.82);--ai-font:'Noto Sans SC','Microsoft YaHei','PingFang SC',sans-serif;--ai-mono:'Cascadia Code','Consolas',monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:2rem}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit}button{color:inherit}button:disabled{cursor:default}
.ai-page{font:400 15px/1.8 var(--ai-font);letter-spacing:.02em;background:var(--ai-bg);color:var(--ai-text);min-width:280px;isolation:isolate}
.ai-page::before{position:absolute;z-index:-1;inset:0 0 auto;height:900px;content:'';pointer-events:none;background:radial-gradient(ellipse at 77% 30%,var(--ai-glow),transparent 47%),linear-gradient(var(--ai-soft) 1px,transparent 1px),linear-gradient(90deg,var(--ai-soft) 1px,transparent 1px);background-size:auto,80px 80px,80px 80px;mask-image:linear-gradient(black,transparent 87%);opacity:.55}
.ai-page [hidden]{display:none!important}.ai-page a{text-decoration:none}.ai-page a:focus-visible,.ai-page button:focus-visible,.ai-page input:focus-visible,.ai-page select:focus-visible{outline:2px solid var(--ai-accent);outline-offset:5px}.ai-page button:active{transform:translateY(1px)}
.ai-skip{position:fixed;top:1rem;left:1rem;z-index:200;padding:.7rem 1rem;background:var(--ai-accent);color:var(--ai-bg);transform:translateY(-200%)}.ai-skip:focus{transform:none}
.ai-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.ai-bar{max-width:1320px;margin:auto;padding:1.5rem 3rem;display:flex;justify-content:space-between;align-items:center;gap:1rem;border-bottom:1px solid var(--ai-line)}
.ai-brand{font-size:1.3rem;letter-spacing:.11em;font-weight:500}.ai-brand>span{font:10px/1.6 var(--ai-mono);letter-spacing:.09em;margin-left:1rem;color:var(--ai-muted)}.ai-home{font-size:12px;color:var(--ai-secondary);display:inline-flex;gap:1.5rem;align-items:center;min-height:44px}.ai-home:hover,.ai-brand:hover{color:var(--ai-accent)}
.ai-page main{max-width:1224px;margin:auto;padding:0 2rem}.ai-hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);align-items:center;gap:3rem;min-height:590px;padding:3.8rem 0 2.8rem}
.ai-eyebrow{display:flex;align-items:center;gap:.7rem;font:11px/1.8 var(--ai-mono);letter-spacing:.16em;color:var(--ai-accent);margin:0 0 1.6rem}.ai-live-dot{width:6px;height:6px;background:var(--ai-accent);border-radius:50%;box-shadow:0 0 13px var(--ai-accent)}
.ai-hero h1{font:500 clamp(3.8rem,7vw,6.6rem)/1.25 var(--ai-font);letter-spacing:.03em;margin:0 0 1.3rem;white-space:nowrap}.ai-hero h1>span:first-child{font-weight:400;letter-spacing:-.07em;margin-right:.12em}.ai-title-period{color:var(--ai-accent)}
.ai-hero-lead{font-size:clamp(17px,1.55vw,21px);font-weight:400;margin:0 0 .8rem;letter-spacing:.04em}.ai-hero-description{font-size:14px;line-height:2;color:var(--ai-secondary);margin:0 0 1.8rem}
.ai-primary{display:inline-flex;justify-content:space-between;align-items:center;gap:2rem;min-height:47px;padding:.65rem 1.15rem;border:1px solid var(--ai-accent);background:var(--ai-accent);color:var(--ai-bg);font-size:13px;font-weight:500;transition:background .18s,box-shadow .18s}.ai-primary:hover{background:var(--ai-text);box-shadow:0 0 24px var(--ai-glow)}
.ai-hero-stats{display:flex;gap:2rem;margin:2.4rem 0 0}.ai-hero-stats>div+div{border-left:1px solid var(--ai-line);padding-left:2rem}.ai-hero-stats dt{font-size:10px;color:var(--ai-muted);margin-bottom:.35rem}.ai-hero-stats dd{font:26px/1.2 var(--ai-mono);letter-spacing:-.04em;margin:0}.ai-hero-stats dd>span{display:block;font:9px/2 var(--ai-mono);letter-spacing:.1em;color:var(--ai-muted);margin-top:.3rem}
.ai-network{position:relative;align-self:center;min-width:0;margin:0;aspect-ratio:1/1.04;isolation:isolate}.ai-network::before{content:'';position:absolute;inset:14%;z-index:-1;border-radius:50%;background:radial-gradient(circle,var(--ai-glow),transparent 70%)}
.ai-network-frame{display:flex;justify-content:space-between;position:absolute;inset:0 0 auto;font:9px/1.8 var(--ai-mono);letter-spacing:.07em;color:var(--ai-muted);padding:1rem 0;border-top:1px solid var(--ai-line)}
.ai-network canvas{position:absolute;top:0;left:0;width:100%;height:100%;touch-action:pan-y;cursor:grab}.ai-network canvas:active{cursor:grabbing}.ai-network-core{position:absolute;left:50%;top:49%;transform:translate(-50%,-50%);text-align:center;pointer-events:none}.ai-network-core>span{font:400 54px/1 var(--ai-mono);letter-spacing:-.1em;color:var(--ai-text);text-shadow:0 0 25px var(--ai-bg)}.ai-network-core small{display:block;white-space:nowrap;font:7px/2 var(--ai-mono);letter-spacing:.16em;color:var(--ai-secondary);margin-top:1rem}
.ai-network figcaption{position:absolute;inset:auto 0 0;display:flex;justify-content:space-between;align-items:center;gap:1rem;border-bottom:1px solid var(--ai-line);padding:.6rem 0;color:var(--ai-muted);font-size:10px}.ai-network figcaption button{background:none;border:0;color:var(--ai-secondary);font-size:10px;min-height:44px;padding:0 .4rem}.ai-network figcaption button:hover{color:var(--ai-accent)}
.ai-fields{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-block:1px solid var(--ai-line);margin:1rem 0 4.7rem}.ai-fields button{background:none;border:0;position:relative;display:grid;grid-template-columns:1.4rem 1fr;gap:.2rem .7rem;text-align:left;padding:1.3rem 1.2rem 1.3rem .4rem;transition:background .18s}.ai-fields button+button{border-left:1px solid var(--ai-line);padding-left:1.2rem}.ai-fields button>span:first-child{grid-row:1/3;font:10px/2.2 var(--ai-mono);color:var(--ai-muted)}.ai-fields strong{font-size:17px;letter-spacing:.1em;font-weight:500}.ai-fields small{font:9px/1.7 var(--ai-mono);color:var(--ai-muted);letter-spacing:.1em}.ai-field-arrow{position:absolute;right:.8rem;top:1.4rem;color:var(--field-color)}.ai-fields button:hover{background:var(--ai-soft)}.ai-fields button:hover strong{color:var(--field-color)}
.ai-atlas{scroll-margin-top:2rem}.ai-section-head{display:flex;justify-content:space-between;align-items:end;gap:1rem;margin-bottom:1.8rem}.ai-section-head .ai-eyebrow{font-size:10px;margin-bottom:.65rem}.ai-section-head h2{font-size:clamp(25px,2.6vw,34px);font-weight:500;line-height:1.7;letter-spacing:.05em;margin:0}.ai-section-head h2>span{color:var(--ai-muted);font-weight:400;margin-left:.8rem}.ai-section-head>p{font-size:12px;color:var(--ai-muted);margin:0 0 .4rem}
.ai-tools{display:flex;justify-content:space-between;gap:1.3rem;margin-bottom:1.5rem}.ai-search-wrap{position:relative;display:flex;align-items:center;gap:.8rem;width:min(100%,31rem);border:1px solid var(--ai-line);background:var(--ai-soft);padding:0 1rem}.ai-search-wrap:focus-within{border-color:var(--ai-accent)}.ai-search-wrap svg{width:17px;height:17px;stroke:var(--ai-muted);fill:none;stroke-width:1.5;flex:none}.ai-search-wrap input{min-width:0;flex:1;width:100%;height:48px;background:none;border:0;color:var(--ai-text);font-size:13px;padding:0}.ai-search-wrap input::placeholder{color:var(--ai-muted)}.ai-search-wrap input:focus-visible{outline:0}.ai-search-wrap input::-webkit-search-cancel-button{display:none}.ai-search-wrap button{border:0;background:none;color:var(--ai-secondary);min-width:36px;min-height:44px;font-size:23px;margin-right:-.6rem}.ai-search-wrap button:hover{color:var(--ai-accent)}
.ai-access-filter{display:flex;align-items:center;gap:.8rem}.ai-access-filter>label{color:var(--ai-muted);font-size:11px;white-space:nowrap}.ai-access-filter select{border:1px solid var(--ai-line);min-height:48px;background:var(--ai-panel);padding:.4rem 2rem .4rem .8rem;color:var(--ai-secondary);font-size:12px;border-radius:0;cursor:pointer}
.ai-filters{display:flex;flex-wrap:wrap;gap:.5rem .7rem;border-bottom:1px solid var(--ai-line);padding-bottom:1.1rem}.ai-filters button{display:flex;align-items:center;gap:.7rem;min-height:42px;padding:.5rem .8rem;border:1px solid transparent;background:none;color:var(--ai-secondary);font-size:12px;white-space:nowrap}.ai-filters button>span{font:10px/1.6 var(--ai-mono);color:var(--ai-muted)}.ai-filters button:hover{color:var(--ai-text);background:var(--ai-soft)}.ai-filters button[aria-pressed=true]{color:var(--ai-accent);border-color:var(--ai-line);background:var(--ai-soft)}.ai-filters button[aria-pressed=true]>span{color:var(--ai-accent)}
.ai-results-line{display:flex;justify-content:space-between;align-items:center;gap:1rem;min-height:60px;font-size:11px;color:var(--ai-muted)}.ai-results-line p{margin:0;color:var(--ai-secondary)}.ai-model-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem}.ai-model{min-width:0;position:relative;border:1px solid var(--ai-line);background:linear-gradient(130deg,var(--ai-soft),transparent 80%);transition:border-color .2s,background .2s;animation:ai-enter .35s ease both}.ai-model:hover{border-color:var(--model-color);background:var(--ai-panel)}.ai-model-open{display:block;width:100%;padding:1.3rem 1.3rem 1.2rem;border:0;background:none;text-align:left;font:inherit;cursor:pointer}.ai-model-open:focus-visible{outline-offset:-4px!important}
.ai-model-top{display:flex;align-items:center;gap:.8rem;margin-bottom:1rem}.ai-model-mark{display:grid;place-items:center;width:35px;height:35px;border:1px solid var(--ai-line);color:var(--model-color);font:500 16px/1.2 var(--ai-mono);letter-spacing:-.06em;flex:none}.ai-model-category{font:9px/1.6 var(--ai-mono);letter-spacing:.1em;color:var(--ai-muted)}.ai-model-number{font:10px/1.6 var(--ai-mono);color:var(--ai-muted);margin-left:auto;opacity:.7}.ai-model-name{display:block;font-size:19px;font-weight:500;letter-spacing:.01em;line-height:1.7;color:var(--ai-text)}.ai-model-provider{display:block;color:var(--ai-muted);font-size:11px;line-height:1.9;margin-top:.15rem}.ai-model-summary{display:block;color:var(--ai-secondary);font-size:13px;line-height:1.9;min-height:3.8em;margin:1rem 0 1.2rem}.ai-model-bottom{display:flex;align-items:center;justify-content:space-between;gap:.6rem;padding-top:.8rem;border-top:1px solid var(--ai-soft)}.ai-access{display:flex;align-items:center;flex-wrap:wrap;gap:.3rem .65rem;font-size:10px;line-height:1.8;color:var(--ai-muted)}.ai-access>span+span{border-left:1px solid var(--ai-line);padding-left:.65rem}.ai-model-read{font-size:11px;color:var(--model-color);white-space:nowrap}.ai-model-read>span{margin-left:.5rem}.ai-model-official{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:43px;padding:.6rem 1.3rem;border-top:1px solid var(--ai-line);font-size:11px;color:var(--ai-secondary)}.ai-model-official:hover{color:var(--model-color);background:var(--ai-soft)}
.ai-more{display:flex;align-items:center;justify-content:center;gap:1rem;flex-wrap:wrap;margin:2.3rem 0 1.6rem}.ai-secondary{display:inline-flex;justify-content:center;gap:2rem;align-items:center;min-height:46px;padding:.65rem 1.5rem;border:1px solid var(--ai-line);background:transparent;color:var(--ai-text);font-size:12px}.ai-secondary:hover{border-color:var(--ai-accent);color:var(--ai-accent);background:var(--ai-soft)}#model-progress{color:var(--ai-muted);font-size:11px}.ai-directory-note{margin:0;max-width:50rem;font-size:11px;line-height:1.9;color:var(--ai-muted)}
.ai-empty{border:1px dashed var(--ai-line);padding:3rem 1rem;text-align:center}.ai-empty p{font-size:18px;margin:0 0 .6rem}.ai-empty>span{font-size:13px;color:var(--ai-secondary)}.ai-empty button{display:block;margin:1.5rem auto 0;min-height:44px;border:1px solid var(--ai-line);background:none;color:var(--ai-accent);padding:.4rem 1rem;font-size:13px}.ai-empty button:hover{background:var(--ai-soft)}
.ai-practice{border-top:1px solid var(--ai-line);padding:3.5rem 0 4rem;margin-top:4rem}.ai-practice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2rem}.ai-practice-grid>a{display:block;border-top:1px solid var(--ai-line);padding:1.2rem 0;transition:border-color .2s}.ai-practice-grid>a:hover{border-color:var(--ai-accent)}.ai-practice-grid small{font:9px/1.7 var(--ai-mono);letter-spacing:.06em;color:var(--ai-muted)}.ai-practice-grid h3{font-size:19px;font-weight:400;line-height:1.8;margin:.9rem 0 .6rem}.ai-practice-grid p{font-size:12px;line-height:1.9;color:var(--ai-secondary);margin:0 0 1.5rem}.ai-practice-grid>a>span{font-size:11px;color:var(--ai-accent)}.ai-practice-grid>a>span>span{margin-left:1.5rem}
.ai-footer{max-width:1224px;margin:auto;display:flex;justify-content:space-between;gap:1rem;padding:1.8rem 2rem 2.4rem;border-top:1px solid var(--ai-line);font-size:10px;color:var(--ai-muted)}.ai-footer a:hover{color:var(--ai-accent)}.ai-footer-divider{margin-inline:.6rem;color:var(--ai-line)}
.ai-dialog{max-width:600px;width:calc(100% - 2rem);max-height:calc(100dvh - 3rem);padding:0;margin:auto;border:1px solid var(--ai-line);background:var(--ai-panel);color:var(--ai-text);box-shadow:0 30px 100px var(--ai-overlay);overflow:auto;overscroll-behavior:contain}.ai-dialog::backdrop{background:var(--ai-overlay)}.ai-dialog-scroll{position:relative;padding:2.2rem}.ai-dialog-close{position:absolute;right:.8rem;top:.8rem;display:grid;place-items:center;width:44px;height:44px;border:1px solid transparent;background:none;color:var(--ai-secondary);font-size:26px;line-height:1}.ai-dialog-close:hover{border-color:var(--ai-line);color:var(--ai-accent);background:var(--ai-soft)}.ai-dialog .ai-eyebrow{font-size:10px;margin:0 3rem 1.7rem 0}.ai-dialog-heading{display:flex;align-items:center;gap:1rem;margin-bottom:1.3rem}.ai-dialog-heading>span{width:58px;height:58px;display:grid;place-items:center;flex:none;border:1px solid var(--ai-line);color:var(--ai-accent);font:24px/1.2 var(--ai-mono)}.ai-dialog-heading h2{font-size:28px;line-height:1.5;font-weight:500;margin:0}.ai-dialog-heading p{font-size:12px;line-height:1.8;color:var(--ai-muted);margin:.35rem 0 0}.ai-dialog-scroll>p:not(.ai-eyebrow){font-size:14px;line-height:1.9;color:var(--ai-secondary);margin:.8rem 0}.ai-dialog-scroll>.ai-dialog-series{font-family:var(--ai-mono);font-size:11px!important;color:var(--ai-accent)!important}.ai-dialog section{border-top:1px solid var(--ai-line);padding-top:1.2rem;margin-top:1.5rem}.ai-dialog section h3{font-size:13px;font-weight:500;line-height:1.9;margin:0 0 .65rem}.ai-dialog section ul{font-size:14px;line-height:1.95;color:var(--ai-secondary);padding-left:1.2rem;margin:0}.ai-dialog section li+li{margin-top:.45rem}.ai-dialog section p{font-size:14px;line-height:1.95;color:var(--ai-secondary);margin:0 0 .9rem}.ai-dialog-links{display:flex;align-items:center;gap:1.5rem;flex-wrap:wrap;margin-top:1.8rem}.ai-dialog-links>a:last-child{font-size:12px;color:var(--ai-secondary)}.ai-dialog-links>a:last-child:hover{color:var(--ai-accent)}.ai-dialog-scroll>.ai-dialog-footnote{font-size:10px!important;margin:1.2rem 0 0!important;color:var(--ai-muted)!important}.ai-page:has(.ai-dialog[open]){overflow:hidden}
.ai-noscript{margin:2rem;font-size:14px;color:var(--ai-secondary)}
@keyframes ai-enter{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@media(min-width:1600px){.ai-hero{min-height:650px}}
@media(max-width:1000px){.ai-bar{padding:1.2rem 2rem}.ai-hero{gap:1.5rem;min-height:530px}.ai-hero h1{font-size:clamp(3rem,7vw,5rem)}.ai-hero-stats{gap:1.4rem}.ai-hero-stats>div+div{padding-left:1.4rem}.ai-model-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ai-fields button{padding-right:.6rem}.ai-fields button+button{padding-left:.7rem}.ai-field-arrow{right:.3rem}.ai-fields button{grid-template-columns:1rem 1fr;gap:.2rem .4rem}.ai-fields strong{font-size:16px}.ai-hero-description{font-size:13px}.ai-network-core>span{font-size:42px}.ai-network-core small{font-size:6px}}
@media(max-width:700px){
 .ai-bar{padding:.9rem 1.25rem}.ai-brand{font-size:1.12rem}.ai-brand>span{display:none}.ai-home{font-size:11px;gap:.7rem}.ai-page main{padding:0 1.25rem}.ai-hero{grid-template-columns:minmax(0,1fr);gap:2.2rem;padding:2.8rem 0 2rem}.ai-hero h1{font-size:clamp(3.4rem,14vw,5rem);margin-bottom:1.1rem}.ai-eyebrow{font-size:10px;margin-bottom:1.3rem}.ai-hero-lead{font-size:17px}.ai-hero-description{font-size:13px;line-height:2}.ai-hero-stats{gap:1.6rem;margin-top:2rem}.ai-hero-stats>div+div{padding-left:1.6rem}.ai-hero-stats dd{font-size:23px}.ai-hero-stats dt{font-size:10px}.ai-hero-stats dd>span{font-size:8px}.ai-network{width:100%;max-width:420px;justify-self:center;aspect-ratio:1/1;max-height:390px}.ai-network-core>span{font-size:48px}.ai-network-core small{font-size:6px}.ai-fields{margin:0 0 2.8rem}.ai-fields button{display:flex;align-items:center;flex-direction:column;gap:.1rem;padding:.85rem .15rem}.ai-fields button+button{padding-left:.15rem}.ai-fields button>span:first-child{font-size:8px;line-height:1.4}.ai-fields strong{font-size:15px}.ai-fields small{font-size:6px;letter-spacing:.02em}.ai-field-arrow{display:none}.ai-section-head{align-items:start;display:block;margin-bottom:1.5rem}.ai-section-head .ai-eyebrow{font-size:9px}.ai-section-head h2{font-size:25px}.ai-section-head>p{font-size:11px;margin:.5rem 0 0}.ai-tools{flex-direction:column;gap:.8rem;margin-bottom:1rem}.ai-search-wrap{width:100%}.ai-search-wrap input{font-size:16px;height:48px}.ai-access-filter{justify-content:space-between}.ai-access-filter select{flex:1;min-height:44px;font-size:12px}.ai-access-filter>label{font-size:11px}.ai-filters{gap:.3rem .4rem;padding-bottom:.9rem}.ai-filters button{font-size:11px;min-height:42px;padding:.45rem .6rem;gap:.5rem}.ai-filters button>span{font-size:9px}.ai-results-line{display:block;padding:.9rem 0;min-height:0;font-size:10px}.ai-results-line>span{display:block;margin-top:.3rem}.ai-model-grid{grid-template-columns:minmax(0,1fr);gap:.85rem}.ai-model-open{padding:1.2rem}.ai-model-top{margin-bottom:.85rem}.ai-model-name{font-size:20px}.ai-model-provider{font-size:11px}.ai-model-summary{font-size:14px;min-height:0;margin:.9rem 0 1rem;line-height:1.9}.ai-model-bottom{padding-top:.9rem}.ai-model-official{padding:.65rem 1.2rem;min-height:44px;font-size:11px}.ai-access{font-size:10px}.ai-directory-note{font-size:10px}.ai-more{margin-top:1.8rem}.ai-practice{margin-top:2.5rem;padding:2.2rem 0}.ai-practice-grid{grid-template-columns:minmax(0,1fr);gap:.7rem}.ai-practice-grid h3{font-size:20px;margin:.6rem 0 .5rem}.ai-practice-grid p{font-size:13px;margin-bottom:.9rem}.ai-practice-grid>a{padding:1.1rem 0}.ai-footer{padding:1.3rem 1.25rem 1.7rem;display:grid;grid-template-columns:1fr auto;font-size:9px;gap:.5rem 1rem}.ai-footer>span:nth-child(2){grid-column:1;grid-row:2}.ai-footer>a{grid-column:2;grid-row:1/3;align-self:center}.ai-dialog{width:calc(100% - 1.2rem);max-height:calc(100dvh - 1.2rem)}.ai-dialog-scroll{padding:1.7rem 1.3rem}.ai-dialog-heading{gap:.8rem}.ai-dialog-heading>span{width:48px;height:48px;font-size:20px}.ai-dialog-heading h2{font-size:25px}.ai-dialog-links{gap:1.2rem}.ai-dialog .ai-primary{font-size:12px;padding:.6rem .9rem;gap:1rem}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.ai-page *,.ai-page *::before,.ai-page *::after{animation:none!important;transition:none!important}}