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#fff);--primary:#f6f1e7;--primary-fg:#17140f;--shadow-2:0 1px 1px #0000004d, 0 10px 30px -10px #0009;--shadow-3:0 2px 6px #0000004d, 0 30px 80px -20px #000000b3;color-scheme:dark}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:var(--nav)}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}body{background:var(--bg);color:var(--text);font:400 16px/1.6 var(--font);-webkit-font-smoothing:antialiased;margin:0;overflow-x:hidden}html:lang(zh-CN) body{line-height:1.75}main,.nav,.footer{z-index:1;position:relative}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}p{margin:0}h1,h2,h3{font-weight:inherit;margin:0}figure{margin:0}:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}::selection{background:var(--accent-soft);color:var(--strong)}.wrap{width:100%;max-width:var(--wrap);padding-inline:var(--gutter);margin-inline:auto}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.backdrop{z-index:0;pointer-events:none;background:var(--bg);position:fixed;inset:0;overflow:hidden}.backdrop i{filter:blur(56px) saturate(1.5) var(--tone);animation:drift var(--dur-drift) ease-in-out infinite alternate;will-change:transform;opacity:.95;background-position:50%;background-size:cover;border-radius:40%;display:block;position:absolute}.backdrop i:first-child{background-image:url(/backdrop/1.jpg);width:64%;height:70%;top:-16%;left:42%}.backdrop i:nth-child(2){width:50%;height:76%;animation-duration:calc(var(--dur-drift) * 1.2);background-image:url(/backdrop/2.jpg);animation-delay:-12s;top:34%;left:-14%}.backdrop i:nth-child(3){width:48%;height:60%;animation-duration:calc(var(--dur-drift) * 1.36);background-image:url(/backdrop/3.jpg);animation-delay:-24s;top:58%;left:60%}.backdrop:before{content:"";z-index:1;background:var(--wash);position:absolute;inset:0}.backdrop:after{content:"";z-index:1;opacity:.05;mix-blend-mode:overlay;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");position:absolute;inset:0}@keyframes drift{0%{transform:translate(0,0)scale(1)rotate(0)}50%{transform:translate(4%,3%)scale(1.08)rotate(6deg)}to{transform:translate(-3%,5%)scale(1.02)rotate(-4deg)}}.glass{isolation:isolate;background:linear-gradient(180deg, var(--glass-top), var(--glass-bot));backdrop-filter:blur(28px) saturate(185%) brightness(var(--lift));box-shadow:inset 0 1px 0 0 var(--rim-hi), inset 1px 0 0 0 var(--rim-lo), inset 0 -1px 0 0 var(--rim-dark), inset 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var(--ease-spring), filter .14s var(--ease);border:0;border-radius:999px;justify-content:center;align-items:center;gap:10px;padding:0 22px;display:inline-flex}.btn:hover{background:var(--fill-hover)}.btn:active{transform:scale(.97)}.btn svg{flex:none;width:16px;height:16px}.btn.primary{background:var(--primary);color:var(--primary-fg);box-shadow:inset 0 1px 0 #ffffff2e, var(--shadow-1);cursor:default;position:relative;overflow:hidden}.btn.primary:hover{filter:brightness(1.12)}.btn.primary:after{content:"";animation:sweep 4s var(--ease) infinite;background:linear-gradient(100deg,#0000 30%,#fff3 50%,#0000 70%);position:absolute;inset:0;transform:translate(-120%)}.btn.accent{color:var(--on-accent);background:linear-gradient(180deg, color-mix(in oklab, var(--accent) 80%, #fff 20%), var(--accent));box-shadow:inset 0 1px 0 #ffffff80, inset 0 -1px 0 #00000024, 0 8px 22px -8px color-mix(in oklab, var(--accent) 70%, transparent), 0 0 0 .5px 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