@font-face{font-family:Tsanger YuYang;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/tsanger-yuyang/tsanger-yuyang-W02-400.woff2)format("woff2")}@font-face{font-family:Tsanger YuYang;font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/tsanger-yuyang/tsanger-yuyang-W03-500.woff2)format("woff2")}:root{--bg:#f3ece2;--paper:#fcf7ef;--paper-2:#efe6da;--ink:#382b29;--muted:#756057;--line:#d5c6b9;--accent:#743c49;--accent-ink:#fcf7ef;--dark:#2f2422;--dark-ink:#f3ece2;--dark-muted:#bfae9f;--focus:#339fa1;--font:"Tsanger YuYang","Segoe UI","Microsoft YaHei",system-ui,sans-serif;--ease:cubic-bezier(.16,1,.3,1);--wrap:min(1240px,100% - 48px);--t-display:clamp(40px,5.2vw,84px);--t-section:clamp(30px,3.5vw,54px);--t-body:17px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--ink);font:400 var(--t-body)/1.75 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var(--line);color:var(--ink)}.btn--quiet:hover{border-color:var(--ink)}.btn--light{background:var(--paper);color:var(--ink)}.btn--light:hover{background:#fff}.btn--off{opacity:.45;cursor:not-allowed}.btn--off:hover i,.btn--off:active{transform:none}.top{z-index:20;width:var(--wrap);background:linear-gradient(var(--bg) 70%,#f3ece200);justify-content:space-between;align-items:center;gap:16px;height:72px;margin:0 auto;display:flex;position:sticky;top:0}.top__brand{color:var(--muted);align-items:center;gap:10px;font-size:13px;display:flex}.top__brand b{color:var(--ink);letter-spacing:.01em;font-size:20px;font-weight:500}.mark{background:linear-gradient(var(--bg),var(--bg)) 50% 0/2px 100% no-repeat,linear-gradient(var(--bg),var(--bg)) 0 50%/100% 2px no-repeat,var(--accent);border-radius:5px;width:22px;height:22px}.top__nav{align-items:center;gap:6px;display:flex}.top__nav>a{color:var(--muted);border-radius:999px;padding:10px 14px;font-size:15px;transition:color 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