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.22s,transform .12s linear;position:absolute;left:0;box-shadow:inset 0 16vh 14vh #ffffff2e,inset 0 28vh 18vh #11111108,inset 0 -34vh 18vh #11111110,inset 16vw 0 15vw #11111113,inset -16vw 0 15vw #11111113}.surface-field__contours{opacity:.38;transform:translateY(calc(var(--scroll-progress) * -2.4rem));background:repeating-linear-gradient(116deg,#0000 0 7.8rem,#11111109 7.86rem,#0000 7.98rem),repeating-linear-gradient(64deg,#0000 0 12.5rem,#c7f4320f 12.58rem,#0000 12.76rem);position:absolute;inset:0;mask-image:linear-gradient(#0000,#000 10% 82%,#0000)}.surface-field__cursor{top:var(--cursor-y);left:var(--cursor-x);opacity:.8;background:#c7f432d1;width:1px;height:1px;transition:top .12s ease-out,left .12s ease-out;position:absolute;transform:translate(-.5px,-.5px);box-shadow:0 0 0 1px #11111129,0 0 0 .42rem #c7f43212}.surface-field__cursor:before{content:"";background:linear-gradient(90deg,#0000,#1111111f 36%,#c7f43273 50%,#1111111f 64%,#0000);width:14.4rem;height:1px;position:absolute;top:0;left:-7.2rem}.surface-field__cursor:after{content:"";background:linear-gradient(#0000,#1111111c 34%,#c7f43266 50%,#1111111c 66%,#0000);width:1px;height:10.4rem;position:absolute;top:-5.2rem;left:0}body:before{z-index:-1;pointer-events:none;content:"";background-image:linear-gradient(#11111106 1px,#0000 1px);background-size:100% 8rem;position:fixed;inset:0}[data-language-only=en],html[data-language=en] [data-language-only=zh]{display:none!important}html[data-language=en] [data-language-only=en]{display:revert!important}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}img,svg{max-width:100%;display:block}main{z-index:1;min-height:70vh;position:relative}::selection{background:var(--color-lime);color:var(--color-ink)}:focus-visible{outline:1px solid var(--color-ink);outline-offset:4px}.skip-link{top:.75rem;left:var(--space-page);z-index:80;border:1px solid var(--color-ink);background:var(--color-ink);color:var(--color-paper);font-family:var(--font-mono);letter-spacing:.02em;text-transform:uppercase;opacity:0;padding:.7rem .9rem;font-size:.72rem;transition:opacity .16s,transform .16s;position:fixed;transform:translateY(-150%)}.skip-link:focus-visible{opacity:1;transform:translateY(0)}.page-shell{width:min(100%, var(--max-page));padding-inline:var(--space-page);margin-inline:auto}.mono{font-family:var(--font-mono);letter-spacing:.02em;text-transform:uppercase}.site-header{z-index:20;background:color-mix(in srgb, var(--color-paper) 90%, transparent);backdrop-filter:blur(16px);border-bottom:1px solid #11111114;position:sticky;top:0}.site-header__inner{grid-template-columns:minmax(10rem,1fr) auto auto;align-items:center;gap:clamp(1rem,2vw,2rem);min-height:4.5rem;display:grid}.site-header__brand{font-family:var(--font-display);letter-spacing:0;font-size:.95rem;font-weight:720}.site-header__nav{min-width:0;font-family:var(--font-mono);letter-spacing:.02em;align-items:center;gap:clamp(1rem,2.2vw,2.25rem);font-size:.68rem;display:flex}.site-header__nav a{white-space:nowrap;padding-block:.4rem;position:relative}.site-header__nav a:after{content:"";background:var(--color-lime);transform-origin:0;height:1px;transition:transform .18s;position:absolute;bottom:0;left:0;right:0;transform:scaleX(0)}.site-header__nav a:hover:after,.site-header__nav a:focus-visible:after,.site-header__nav a[aria-current=page]:after{transform:scaleX(1)}.site-header__nav a[aria-current=page]{color:var(--color-ink)}.site-header__nav a[aria-current=page] span:before{content:"";border:1px solid var(--color-lime);vertical-align:.05em;background:#c7f4322e;width:.34rem;height:.34rem;margin-right:.42rem;display:inline-block}.site-header__language{font-family:var(--font-mono);letter-spacing:.02em;background:#ffffff47;border:1px solid #1111111f;border-radius:999px;flex:none;align-items:center;gap:.15rem;padding:.16rem;font-size:.66rem;display:inline-flex;box-shadow:inset 0 1px #ffffff6b,0 .35rem 1rem #1111110a}.site-header__language button{min-width:2rem;min-height:1.55rem;color:var(--color-muted);cursor:pointer;background:0 0;border:0;border-radius:999px;padding:0 .56rem;transition:color .16s,background .16s,box-shadow .16s,transform .16s}.site-header__language button:hover{color:var(--color-ink)}.site-header__language button[aria-pressed=true]{color:var(--color-ink);background:#11111112;box-shadow:inset 0 0 0 1px #1113}.site-header__language button:active{transform:translateY(1px)}.site-footer{z-index:1;border-top:1px solid var(--color-line);margin-top:clamp(5rem,12vw,10rem);position:relative}.site-footer__inner{min-height:6rem;color:var(--color-muted);font-family:var(--font-mono);justify-content:space-between;align-items:center;gap:1.5rem;font-size:.72rem;display:flex}.site-footer__links{align-items:center;gap:1rem;display:flex}.site-footer a:hover{color:var(--color-ink)}section[data-section-marker]{isolation:isolate;position:relative}section[data-section-marker]:before{top:clamp(1.25rem,2vw,1.8rem);bottom:clamp(1.25rem,2vw,1.8rem);left:var(--space-page);z-index:-1;content:"";pointer-events:none;background:linear-gradient(#0000,#11111129,#0000);width:1px;position:absolute}section[data-section-marker]:after{z-index:-2;content:"";border-top:1px solid #11111118;border-bottom:1px solid #ffffff47;width:100vw;position:absolute;inset:0 50%;transform:translate(-50%)}section[data-section-marker]>.section-label{position:relative}section[data-section-marker]>.section-label:before{content:"";background:linear-gradient(90deg, var(--color-lime), transparent);width:min(14rem,42vw);height:1px;position:absolute;bottom:-1px;left:0}section[data-section-tone=surface]:after{background:linear-gradient(180deg, #ffffff47, #ece6dc6b), linear-gradient(to right, #11111109 1px, transparent 1px) 0 0 / calc((100vw - 2 * var(--space-page)) / 12) 100%}section[data-section-tone=quiet]:after{background:#ffffff1f}section[data-section-tone=focus]:after{background:linear-gradient(120deg,#c7f43214,#0000 42%),#ece6dc52}@media (width<=720px){body{background:linear-gradient(to right, #1111110a 1px, transparent 1px) 0 0 / 25% 100%, var(--color-paper)}.site-header__inner{grid-template-columns:minmax(0,1fr) auto;gap:.7rem;padding-block:1rem}.site-header__brand{min-width:0}.site-header__nav{overscroll-behavior-x:contain;scrollbar-width:none;grid-area:2/1/auto/-1;justify-content:space-between;gap:.65rem;padding-bottom:.1rem;overflow-x:auto}.site-header__nav::-webkit-scrollbar{display:none}.site-header__language{justify-self:end}.surface-field__cursor{top:var(--cursor-y);left:var(--cursor-x);opacity:.54;width:1px;height:1px}.surface-field__cursor:before{width:8.8rem;left:-4.4rem}.surface-field__cursor:after{height:6.6rem;top:-3.3rem}.surface-field__contours{opacity:.34}section[data-section-marker]:before{display:none}.site-footer__inner{flex-direction:column;justify-content:center;align-items:flex-start}}@media 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