:root{--fb:'Roboto',-apple-system,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;--fd:'Roboto',-apple-system,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;--fm:'Roboto Mono',ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;--bg:#f4f6f8;--fg:#1f2428;--fg2:#5f6b76;--accent:#1a73e8;
--card:#fff;--card-h:#fff;--line:transparent;--r:12px;--r-sel:8px;
--sh:0 1px 2px rgba(60,64,67,.16),0 1px 3px 1px rgba(60,64,67,.10);--sh-h:0 4px 10px rgba(60,64,67,.20),0 8px 24px rgba(60,64,67,.14);
--gap:14px;--min:250px;--min-m:152px;--gap-m:10px;--card-pad:16px;--h1:clamp(28px,4.2vw,48px);--h1-w:500;--h1-ls:-.01em;
--h1-sub:13px;--hero-pad:40px 0 20px;--chip-bg:#fff;--chip-bd:1px solid #dfe3e8;--chip-r:8px;--name-s:14px;--name-w:500;
--fav:28px;--fav-r:50%;--in-bg:#fff;--in-bd:1px solid #dfe3e8;--in-r:28px;--in-sh:0 1px 3px rgba(60,64,67,.12);
--wrap-pad:30px 24px 54px;--max:1200px;--hv-y:translateY(-2px)}
.card{border:0}
.chip.on{background:#e8f0fe;border-color:#1a73e8;color:#1a73e8}
.chip:hover{background:#f1f3f4}
.hdr{background:#fff;border-bottom:1px solid #e0e3e7}
.brand .mark{color:#1a73e8}
footer{border-top:1px solid #e0e3e7}