:root{--bg:#F7F8F6;--paper:#fff;--soft:#EBF1EF;--nav:#15313B;--nav2:#204A53;--accent:#137D82;--link:#256B94;--heading:#19353C;--body:#384F55;--muted:#667A7D;--line:#DCE5E3;--foot:#102A32}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--body);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8;overflow-wrap:break-word}a{color:var(--link);text-decoration-thickness:1px;text-underline-offset:4px}a:hover{color:var(--accent)}button{font:inherit}h1,h2,h3{color:var(--heading);line-height:1.35;letter-spacing:-.015em}h1{font-size:clamp(34px,3.1vw,42px);margin:0 0 23px}h2{font-size:clamp(24px,2.2vw,28px);margin:0 0 19px}h3{font-size:20px;margin:0 0 12px}p{margin:0 0 17px}p:last-child{margin-bottom:0}strong{color:var(--heading)}.wrap{width:min(1200px,calc(100% - 56px));margin-inline:auto;min-width:0}.site-header{background:var(--nav);color:#fff}.nav-container{width:min(1350px,calc(100% - 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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}