@keyframes hfy-marquee{0%{transform:translate(0)}to{transform:translate(-50%)}}@keyframes hfy-blink{0%,49%{opacity:1}50%,to{opacity:0}}.hfy{color:#111;--hfy-gutter:max(clamp(20px, 5vw, 64px), calc((100vw - 1280px) / 2));--hfy-gutter-nav:max(clamp(16px, 4vw, 48px), calc((100vw - 1280px) / 2));background:#f4f1ea;width:100%;font-family:Noto Sans SC,sans-serif;position:relative;overflow-x:hidden}.hfy a{color:#ff4d00;text-decoration:none}.hfy a:hover{color:#111}.hfy-gl{z-index:0;pointer-events:none;width:100vw;height:100vh;position:fixed;inset:0}.hfy-progress{z-index:30;background:#ff4d00;width:0%;height:4px;position:fixed;top:0;left:0}.hfy-nav{z-index:20;padding:14px var(--hfy-gutter-nav);backdrop-filter:blur(10px);background:#f4f1eae0;border-bottom:2px solid #111;justify-content:space-between;align-items:center;gap:12px;display:flex;position:fixed;top:0;left:0;right:0}.hfy-nav-brand{font-family:Archivo,sans-serif;font-size:17px;font-weight:900}.hfy-nav-brand span{color:#ff4d00}.hfy-nav-links{gap:30px;font-family:IBM Plex Mono,monospace;font-size:12.5px;display:flex}.hfy-nav-links a{color:#111}.hfy-nav-links a:hover{color:#ff4d00}.hfy-nav-cta{background:#ff4d00;padding:9px 18px;font-family:IBM Plex Mono,monospace;font-size:12.5px;font-weight:500;color:#f4f1ea!important}.hfy-nav-cta:hover{background:#111}.hfy-rail{z-index:20;flex-direction:column;gap:14px;font-family:IBM Plex Mono,monospace;font-size:11px;display:flex;position:fixed;top:50%;right:26px;transform:translateY(-50%)}.hfy-rail-item{justify-content:flex-end;align-items:center;gap:8px;display:flex}.hfy-rail-text{color:#11111159}.hfy-rail-bar{background:#11111140;width:14px;height:2px;transition:all .3s;display:inline-block}.hfy-rail-item.is-active .hfy-rail-text{color:#ff4d00}.hfy-rail-item.is-active .hfy-rail-bar{background:#ff4d00;width:34px}.hfy.is-dark-sec .hfy-rail-item:not(.is-active) .hfy-rail-text{color:#f4f1ea66}.hfy.is-dark-sec .hfy-rail-item:not(.is-active) .hfy-rail-bar{background:#f4f1ea4d}.hfy-hero{z-index:1;min-height:100vh;padding:120px var(--hfy-gutter) 80px;box-sizing:border-box;flex-direction:column;justify-content:center;display:flex;position:relative;overflow:hidden}.hfy-hero-torus-static{z-index:-1;opacity:.5;pointer-events:none;width:min(110vw,620px);display:none;position:absolute;top:-2%;right:-24%;mask-image:radial-gradient(105% 105% at 72% 32%,#000 36%,#0000 74%)}.hfy-hero-torus-static img{width:100%;height:auto}.hfy:not(.is-gl) .hfy-hero-torus-static{display:block}.hfy-hero-meta{flex-wrap:wrap;justify-content:space-between;gap:12px;margin-bottom:36px;font-family:IBM Plex Mono,monospace;font-size:13.5px;line-height:1.9;display:flex}.hfy-hero-meta .hfy-right{text-align:right}.hfy-hero-title{letter-spacing:-.02em;margin:0;font-family:Archivo,sans-serif;font-size:min(13.5vw,182px);font-weight:900;line-height:.9}.hfy-hero-title span{color:#0000;-webkit-text-stroke:3px #ff4d00}.hfy-hero-foot{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:32px;margin-top:52px;display:flex}.hfy-hero-tagline{font-size:clamp(26px,3vw,42px);font-weight:900;line-height:1.3}.hfy-hero-tagline span{color:#f4f1ea;background:#ff4d00;padding:0 12px}.hfy-hero-bio{color:#444;max-width:620px;margin:22px 0 0;font-size:15.5px;line-height:1.95}.hfy-hero-hint{color:#666;text-align:right;flex:none;font-family:IBM Plex Mono,monospace;font-size:12px}.hfy-hero-cue{letter-spacing:.22em;color:#666;align-items:center;gap:10px;font-family:IBM Plex Mono,monospace;font-size:11px;display:none}.hfy-hero-cue:after{content:"";background:#11111140;flex:1;height:1px}.hfy-ticker{z-index:1;background:#111;border-top:2px solid #111;border-bottom:2px solid #111;position:relative;overflow:hidden}.hfy-ticker-track{width:max-content;animation:26s linear infinite hfy-marquee;display:flex}.hfy-ticker-item{color:#f4f1ea;white-space:nowrap;padding:14px 0;font-family:IBM Plex Mono,monospace;font-size:14px}.hfy-ticker-item--accent{color:#ff4d00}.hfy-h2-row{align-items:baseline;gap:22px;margin-bottom:44px;display:flex}.hfy-h2-no{color:#ff4d00;font-family:Archivo,sans-serif;font-size:15px;font-weight:900}.hfy-h2{margin:0;font-family:Archivo,sans-serif;font-size:min(5vw,62px);font-weight:900}.hfy-h2-zh{font-family:Noto Sans SC,sans-serif}.hfy-h2--engine{font-size:50px;line-height:1.05}.hfy-h2-zh--engine{font-size:34px}.hfy-section-intro{color:#444;max-width:640px;margin:-24px 0 44px 37px;font-size:16px;line-height:1.9}.hfy-engine{z-index:1;padding:110px var(--hfy-gutter) 90px;box-sizing:border-box;grid-template:"copy iso"1fr"log iso"/520px 1fr;align-items:stretch;gap:34px 48px;display:grid;position:relative}.hfy-engine .hfy-h2-row{align-items:baseline;gap:18px;margin-bottom:0}.hfy-engine-copy{grid-area:copy}.hfy-engine-intro{color:#444;margin:28px 0 0;font-size:15.5px;line-height:2}.hfy-engine-bullets{flex-direction:column;gap:14px;margin-top:34px;font-family:IBM Plex Mono,monospace;font-size:13px;display:flex}.hfy-bullet{align-items:center;gap:12px;display:flex}.hfy-bullet span{background:#ff4d00;flex:none;width:10px;height:10px}.hfy-exec-log{background:#101014;border:2px solid #111;grid-area:log;box-shadow:6px 6px #1111111f}.hfy-exec-log-bar{letter-spacing:.18em;color:#8b8b9e;background:#16161c;border-bottom:2px solid #111;align-items:center;gap:8px;padding:8px 14px;font-family:IBM Plex Mono,monospace;font-size:10.5px;display:flex}.hfy-exec-log-bar i{background:#ff4d00;border-radius:50%;width:7px;height:7px;animation:1.2s step-end infinite hfy-blink}.hfy-exec-log-body{color:#8b8b9e;min-height:132px;padding:12px 14px 14px;font-family:IBM Plex Mono,monospace;font-size:11.5px;line-height:1.85}.hfy-exec-log-body div{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.hfy-exec-log-body div:last-child{color:#ff4d00}.hfy-iso-stage{justify-content:center;align-items:center;min-height:540px;display:flex}.hfy-iso{--s:.85;transform:rotateX(58deg) rotateZ(-45deg) scale(var(--s));transform-style:preserve-3d;width:560px;height:470px;margin:calc(-235px * (1 - var(--s))) calc(-280px * (1 - var(--s)));flex:none;position:relative}.hfy-iso-plane{background:radial-gradient(closest-side,#ff4d000f,#0000 80%),repeating-linear-gradient(0deg,#1111110f 0 1px,#0000 1px 28px),repeating-linear-gradient(90deg,#1111110f 0 1px,#0000 1px 28px),#f4f1ea9e;border:1.5px solid #11111159;position:absolute;inset:-28px;box-shadow:18px 18px #11111114}.hfy-iso-caption{letter-spacing:.25em;color:#1111118c;font-family:IBM Plex Mono,monospace;font-size:11.5px;position:absolute;top:440px;left:-28px}.hfy-iso-exec{letter-spacing:.2em;color:#1111118c;font-family:IBM Plex Mono,monospace;font-size:11.5px;position:absolute;top:80px;left:110px}.hfy-iso-track{background:#11111147;position:absolute}.hfy-iso-track--top{width:340px;height:4px;top:106px;left:110px}.hfy-iso-track--right{width:4px;height:265px;top:110px;left:446px}.hfy-iso-track--bottom{width:340px;height:4px;top:371px;left:110px}.hfy-iso-retry{border-top:2px dashed #ff4d008c;width:340px;position:absolute;top:397px;left:110px}.hfy-iso-retry-label{color:#ff4d00;font-family:IBM Plex Mono,monospace;font-size:11.5px;position:absolute;top:405px;left:220px}.hfy-iso-packet{box-sizing:border-box;background:#ff4d00;border:2px solid #111;width:14px;height:14px;transition:left 1s linear,top 1s linear;position:absolute;top:103px;left:188px;transform:translateZ(6px)}.hfy-iso-node{width:110px;height:110px;transform-style:preserve-3d;cursor:pointer;position:absolute}.hfy-iso-shadow{background:radial-gradient(closest-side,#1113,#0000 72%);width:116px;height:116px;position:absolute;top:10px;left:10px}.hfy-iso-plat{box-sizing:border-box;background:#fff6;border:2px solid #111;transition:border-color .45s;position:absolute;inset:0}.hfy-iso-cube{width:84px;height:84px;transform-style:preserve-3d;transition:transform .45s;position:absolute;top:13px;left:13px;transform:translateZ(0)}.hfy-iso-face{box-sizing:border-box;border:2px solid #111;transition:background .45s;position:absolute}.hfy-iso-face--top{background:#f4f1ea;width:84px;height:84px;top:0;left:0;transform:translateZ(44px)}.hfy-iso-face--a{transform-origin:top;background:#d8d2c4;width:84px;height:44px;top:84px;left:0;transform:rotateX(90deg)}.hfy-iso-face--b{transform-origin:0;background:#e6e1d2;width:44px;height:84px;top:0;left:0;transform:rotateY(-90deg)}.hfy-iso-label{text-align:center;width:150px;position:absolute;top:-26px;left:-20px;transform:translateZ(86px)rotate(45deg)rotateX(-58deg)}.hfy-iso-label-en{letter-spacing:.12em;color:#b3ac9c;font-family:IBM Plex Mono,monospace;font-size:10.5px}.hfy-iso-label-zh{color:#111;font-size:17px;font-weight:900;transition:color .45s}.hfy-iso-node.is-on .hfy-iso-plat{border-color:#ff4d00}.hfy-iso-node.is-on .hfy-iso-cube{transform:translateZ(20px)}.hfy-iso-node.is-on .hfy-iso-face--top{background:#ff4d00}.hfy-iso-node.is-on .hfy-iso-face--a{background:#b83a00}.hfy-iso-node.is-on .hfy-iso-face--b{background:#d94400}.hfy-iso-node.is-on .hfy-iso-label-zh{color:#ff4d00}.hfy-stack{z-index:1;padding:70px var(--hfy-gutter);box-sizing:border-box;position:relative}.hfy-chart{backdrop-filter:blur(4px);cursor:crosshair;background:repeating-linear-gradient(0deg,#11111112 0 1px,#0000 1px 10%),#f4f1ead9 repeating-linear-gradient(90deg,#11111112 0 1px,#0000 1px 12.28%);border:2px solid #111;height:560px;position:relative;overflow:hidden}.hfy-chart-x{letter-spacing:.15em;color:#666;font-family:IBM Plex Mono,monospace;font-size:11px;position:absolute;bottom:96px;right:16px}.hfy-chart-y{letter-spacing:.15em;color:#666;writing-mode:vertical-rl;text-orientation:mixed;font-family:IBM Plex Mono,monospace;font-size:11px;position:absolute;top:16px;left:12px}.hfy-chart-legend{z-index:2;background:#f4f1eae6;border:1px solid #11111140;gap:20px;padding:8px 12px;font-family:IBM Plex Mono,monospace;font-size:11px;display:flex;position:absolute;top:14px;right:16px}.hfy-chart-legend span{align-items:center;gap:7px;display:flex}.hfy-sq{background:#111;border:2px solid #111;width:11px;height:11px;display:inline-block}.hfy-sq--accent{background:#ff4d00}.hfy-chart-edge{border:2px dashed #ff4d0099;width:17%;height:26%;position:absolute;top:13%;left:13.5%}.hfy-chart-edge-label{color:#ff4d00;padding-top:14px;font-family:IBM Plex 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.hfy-pt-name{color:#ff4d00;font-weight:500}.hfy-stack-wall{display:none}.hfy-wall-group{padding:18px 16px 20px}.hfy-wall-group+.hfy-wall-group{border-top:2px solid #111}.hfy-wall-head{letter-spacing:.14em;color:#666;align-items:center;gap:8px;margin-bottom:14px;font-family:IBM Plex Mono,monospace;font-size:11px;display:flex}.hfy-wall-head i{background:#111;border:2px solid #111;width:11px;height:11px}.hfy-wall-group--ai .hfy-wall-head{color:#ff4d00}.hfy-wall-group--ai .hfy-wall-head i{background:#ff4d00}.hfy-wall-chips{flex-wrap:wrap;gap:8px;display:flex}.hfy-wall-chip{color:#111;background:#ffffff80;border:1.5px solid #111;align-items:baseline;gap:7px;padding:7px 10px;font-family:IBM Plex Mono,monospace;font-size:12px;display:inline-flex}.hfy-wall-chip small{color:#999;font-size:10px}.hfy-wall-chip--ai{color:#f4f1ea;background:#ff4d00;border-color:#ff4d00}.hfy-wall-chip--ai small{color:#f4f1eabf}.hfy-chart-stats--flow{position:static}.hfy-chart-stats{backdrop-filter:blur(2px);background:#f4f1eaeb;border-top:2px solid #111;grid-template-columns:repeat(3,1fr);display:grid;position:absolute;bottom:0;left:0;right:0}.hfy-chart-stat{border-right:2px solid #111;align-items:baseline;gap:12px;padding:16px 22px 18px;display:flex}.hfy-chart-stat:last-child{border-right:none}.hfy-chart-stat strong{color:#111;font-family:Archivo,sans-serif;font-size:34px;font-weight:900;line-height:1}.hfy-chart-stat--ai strong{color:#ff4d00}.hfy-chart-stat span{letter-spacing:.1em;color:#666;font-family:IBM Plex Mono,monospace;font-size:11px}.hfy-work{z-index:1;padding:70px var(--hfy-gutter);box-sizing:border-box;position:relative}.hfy-term{background:#101014;border:2px solid #111;box-shadow:10px 10px #1111111f}.hfy-term-bar{background:#16161c;border-bottom:2px solid #111;align-items:center;gap:8px;padding:13px 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.35s}.hfy-job-head{flex-wrap:wrap;align-items:baseline;gap:10px;display:flex}.hfy-job-hash{color:#ff4d00;font-weight:700}.hfy-job-ref{color:#8b8b9e;font-size:12px}.hfy-job-company{color:#f4f1ea;font-family:Noto Sans SC,sans-serif;font-size:15.5px;font-weight:700;transition:color .35s}.hfy-job-role{color:#8b8b9e;font-family:Noto Sans SC,sans-serif;font-size:13px}.hfy-job-date{color:#5c5c6b;font-size:12.5px}.hfy-job-diffs{opacity:0;max-height:0;transition:max-height .5s,opacity .4s;overflow:hidden}.hfy-job.is-open{border-left-color:#ff4d00}.hfy-job.is-open .hfy-job-company{color:#ff4d00}.hfy-job.is-open .hfy-job-diffs{opacity:1;max-height:140px}.hfy-job-diff{color:#c8c8d8;font-family:Noto Sans SC,sans-serif;font-size:13.5px}.hfy-job-diff span{color:#ff4d00;font-family:IBM Plex Mono,monospace}.hfy-projects{z-index:1;min-height:100vh;padding:100px var(--hfy-gutter) 60px;box-sizing:border-box;flex-direction:column;justify-content:center;display:flex;position:relative}.hfy-demo{backdrop-filter:blur(4px);background:#f4f1eae0;border:2px solid #111}.hfy-demo-head{border-bottom:2px solid #111;flex-wrap:wrap;align-items:center;gap:14px;padding:14px 24px;display:flex}.hfy-demo-head h3{margin:0;font-family:Archivo,sans-serif;font-size:22px;font-weight:900}.hfy-demo-head h3 a{color:#111}.hfy-demo-head h3 a:hover{color:#ff4d00}.hfy-demo-badge{color:#f4f1ea;background:#ff4d00;padding:4px 9px;font-family:IBM Plex Mono,monospace;font-size:11px}.hfy-demo-sub{color:#666;margin-left:auto;font-family:IBM Plex Mono,monospace;font-size:11.5px}.hfy-demo-replay{color:#f4f1ea;cursor:pointer;background:#111;padding:6px 14px;font-family:IBM Plex Mono,monospace;font-size:12px}.hfy-demo-replay:hover{background:#ff4d00}.hfy-demo-grid{grid-template-columns:1fr 44px 1.05fr 44px 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