:root{--navy:#061528;--navy2:#102a4c;--blue:#438cff;--cyan:#20b8b5;--mist:#e8f0f7;--surface:#f4f7fa;--line:rgba(8,27,51,.15);--sans:"Avenir Next","PingFang SC","Microsoft YaHei",sans-serif;--serif:"Iowan Old Style","PingFang SC",serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--navy);background:var(--surface);font-family:var(--sans);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}
header{height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(22px,6vw,90px);color:var(--mist);background:var(--navy);border-bottom:1px solid rgba(232,240,247,.18)}.brand{display:flex;align-items:center;gap:11px;color:#8fc2ff;font-size:10px;font-weight:700;letter-spacing:.14em;text-transform:uppercase}.brand img{width:34px}.brand span{display:grid}.brand small{margin-top:5px;color:var(--mist);font-size:7px;opacity:.5}.languages{display:flex;border:1px solid rgba(232,240,247,.2)}.languages button{min-width:43px;padding:8px;color:rgba(232,240,247,.62);background:none;border:0;font:600 10px var(--sans);cursor:pointer}.languages button.is-active{color:var(--navy);background:var(--cyan)}
main{min-height:80vh}.back{display:block;padding:27px clamp(22px,7vw,112px);color:#678198;border-bottom:1px solid var(--line);font-size:10px;letter-spacing:.1em;text-transform:uppercase}.tool-hero{display:grid;grid-template-columns:1.4fr .6fr;gap:10vw;padding:clamp(70px,10vw,150px) clamp(22px,7vw,112px);color:var(--mist);background:linear-gradient(125deg,var(--navy),var(--navy2))}.tool-hero>div>p:first-child{color:#8fc2ff;font-size:9px;letter-spacing:.18em;text-transform:uppercase}.tool-hero h1{max-width:900px;margin:25px 0;font-size:clamp(66px,10vw,145px);line-height:.82;letter-spacing:-.055em}.summary{max-width:730px;color:rgba(232,240,247,.7);font:clamp(18px,1.7vw,25px)/1.55 var(--serif)}aside{align-self:end;border-top:1px solid rgba(232,240,247,.2)}aside div,aside a{display:flex;justify-content:space-between;gap:20px;padding:15px 0;border-bottom:1px solid rgba(232,240,247,.15)}aside small,aside a{color:rgba(232,240,247,.52);font-size:9px;letter-spacing:.1em;text-transform:uppercase}aside strong{font-size:11px;font-weight:500}
.guide-layout{display:block;width:100%;padding:clamp(75px,10vw,145px) clamp(22px,7vw,112px)}.markdown{width:min(100%,1040px);min-width:0;margin:0 auto;font-size:16px;line-height:1.8}.markdown h1,.markdown h2,.markdown h3{font-family:var(--sans);line-height:1.15;letter-spacing:-.025em}.markdown h1{font-size:45px}.markdown h2{margin-top:65px;font-size:32px}.markdown h3{margin-top:42px;font-size:23px}.markdown p,.markdown li{color:#496780}.markdown img{display:block;max-width:100%;height:auto}.markdown figure{max-width:100%;margin:36px 0}.markdown figcaption{margin-top:10px;color:#678198;font-size:12px}.markdown pre{max-width:100%;overflow:auto;padding:20px;color:var(--mist);background:var(--navy);font:12px/1.6 "SFMono-Regular",monospace}.markdown table{display:block;width:100%;max-width:100%;overflow-x:auto;border-collapse:collapse}.markdown th,.markdown td{min-width:150px;padding:12px 14px;border:1px solid var(--line);text-align:left;vertical-align:top}.empty{padding:100px 7vw;text-align:center}.empty h2{font-size:40px}.empty p{color:#678198}
footer{min-height:120px;display:flex;align-items:center;justify-content:space-between;padding:30px clamp(22px,6vw,90px);color:rgba(232,240,247,.55);background:var(--navy);font-size:9px;letter-spacing:.1em}
html[lang^=zh] body,html[lang^=zh] .summary{font-family:"PingFang SC","PingFang HK","Microsoft YaHei",sans-serif}html[lang^=zh] .tool-hero h1{font-size:clamp(52px,7vw,95px);line-height:1}html[lang^=zh] .markdown{font-size:17px}
@media(max-width:760px){.tool-hero{grid-template-columns:1fr}.tool-hero aside{margin-top:45px}.tool-hero h1{font-size:58px}.markdown h1{font-size:36px}.markdown h2{font-size:28px}footer{align-items:start;flex-direction:column;gap:20px}}