:root{font-family:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#2c2b35;background:#f8f7f4;font-synthesis:none;--accent:#625bc4;--muted:#6c6975;--line:#e2dfd9}
.ui-icon{display:block;width:18px;height:18px;flex:0 0 auto;pointer-events:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0}a{color:var(--accent);text-underline-offset:4px}a:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:5px}a,summary{-webkit-tap-highlight-color:transparent}p,li,dd{line-height:1.9}p{margin:0 0 1.1em}h1,h2,h3,h4{line-height:1.4;font-weight:650;letter-spacing:-.035em}h1,h2,h3{margin-top:0}h1{font-size:clamp(36px,4.7vw,64px)}h2{font-size:clamp(27px,3vw,38px)}h3{font-size:19px}main,.site-header,.site-footer{width:min(1160px,calc(100% - 80px));margin-inline:auto}main{min-height:65vh}.site-header{display:flex;align-items:center;gap:32px;padding-block:28px}.brand{display:inline-flex;align-items:center;gap:10px;color:inherit;text-decoration:none;white-space:nowrap;font-size:23px;font-weight:700}.brand-mark{display:block;width:32px;height:32px;flex:0 0 32px}.brand-dot{color:var(--accent)}.site-header nav{display:flex;gap:29px;margin-left:auto}.site-header nav a{font-size:14px;color:#55515d;text-decoration:none}.site-header nav a:hover,.site-header nav a[aria-current]{color:var(--accent)}.button{display:inline-flex;align-items:center;justify-content:center;gap:25px;min-height:48px;padding:12px 22px;border-radius:7px;background:var(--accent);color:white;font-size:15px;font-weight:600;text-decoration:none;white-space:nowrap;transition:background .15s}.button:hover{background:#524caf}.site-header .button{min-height:40px;font-size:13px;padding:9px 15px;gap:17px}.text-link{font-size:14px;text-decoration:none;display:inline-flex;align-items:center;gap:14px}.text-link:hover{text-decoration:underline}.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:70px;align-items:center;padding:76px 0 92px}.hero h1{margin:0 0 27px}.hero-copy>p{font-size:17px;line-height:1.95;color:var(--muted)}.hero-actions{display:flex;align-items:center;gap:27px;flex-wrap:wrap;margin-top:30px}.hero-copy .hero-note{font-size:12px;color:#77727d;margin-top:21px;letter-spacing:.02em}.paper{background:#fff;padding:35px 40px 24px;box-shadow:0 18px 70px #4036320b,0 1px 6px #40363206;border:1px solid #e9e5df;transform:rotate(1.5deg);border-radius:3px}.paper-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:11px;color:#8a8590;border-bottom:1px solid #e9e7ed;padding-bottom:19px}.paper-heading span{font:italic 14px Georgia}.paper h2{font-size:31px;margin:28px 0 17px}.paper p{font-size:13px;color:#797480;line-height:1.9}.paper blockquote{font-size:13px;margin:22px 0;padding:9px 13px;background:#f5f4fa;color:#68617b;border-left:2px solid #a49bd7}.paper table{font-size:11px}.paper td,.paper th{padding:9px 11px}.paper-bottom{border-top:1px solid #e9e7ed;display:flex;justify-content:space-between;font-size:10px;color:#aaa4af;margin-top:28px;padding-top:16px}.section{border-top:1px solid var(--line);padding-block:70px}.example{display:grid;grid-template-columns:.65fr 1.35fr;gap:54px;align-items:center}.section-intro p{color:var(--muted);font-size:14px;max-width:250px}.comparison{border:1px solid var(--line);border-radius:8px;overflow:hidden;display:grid;grid-template-columns:1fr 1fr;background:#fff}.comparison>div{padding:25px 22px;min-width:0}.comparison>div:first-child{background:#f2f1f6;border-right:1px solid var(--line)}.comparison h3{font-size:11px;color:#817989;letter-spacing:.02em;margin-bottom:21px}.comparison pre{padding:0;border:0;font-size:11px;line-height:2;background:transparent;margin:0}.rendered-example h4{font-size:20px;margin:0 0 17px}.rendered-example p,.rendered-example li,.rendered-example blockquote{font-size:12px}.rendered-example ul{padding-left:18px}.rendered-example blockquote{margin:20px 0 0;padding-left:12px;border-left:2px solid #b3abd4;color:#81778d}.formats>h2{margin-bottom:34px}.format-row{display:grid;grid-template-columns:125px 1fr auto;gap:24px;align-items:center;padding:26px 0;border-top:1px solid var(--line)}.file-extension{font:16px Consolas,monospace;color:var(--accent)}.format-row h3{margin-bottom:7px}.format-row p{font-size:14px;color:var(--muted);margin:0}.privacy-feature{display:grid;grid-template-columns:1fr 1fr;gap:100px}.privacy-feature p{font-size:15px;color:var(--muted)}.faq{display:grid;grid-template-columns:1fr 1fr;column-gap:100px}.faq h2{grid-column:1/-1;margin-bottom:26px}details{border-bottom:1px solid var(--line);padding-block:20px}summary{cursor:pointer;font-size:16px;line-height:1.7;font-weight:600;padding-right:15px}details p{color:var(--muted);font-size:14px;margin:14px 0 0}.closing{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:48px 0 70px}.closing h2{margin:0}.site-footer{border-top:1px solid var(--line);padding:29px 0 34px;display:flex;justify-content:space-between;gap:25px;align-items:center;font-size:12px;color:var(--muted)}.footer-brand{font-weight:600;color:#55515d;text-decoration:none}.site-footer nav{display:flex;gap:24px}.site-footer nav a{color:var(--muted);text-decoration:none}.site-footer nav a:hover{text-decoration:underline}.article{max-width:760px;margin:62px auto 95px;font-size:16px;overflow-wrap:anywhere}.article-header{padding-bottom:32px;margin-bottom:37px;border-bottom:1px solid var(--line)}.article-header h1{font-size:clamp(34px,4vw,48px);margin-bottom:16px}.article-header>p{color:var(--muted);font-size:17px}.article-header>.button{margin-top:10px}.article h2{font-size:27px;margin:48px 0 19px}.article h3{margin:26px 0 12px}.article p,.article li{color:#5a5663}.article ul,.article ol{padding-left:23px}.article li+li{margin-top:9px}.article .steps{counter-reset:step;list-style:none;padding:0}.steps>li{counter-increment:step;position:relative;padding-left:47px;margin:25px 0}.steps>li:before{content:counter(step,decimal-leading-zero);position:absolute;left:0;top:4px;font:14px Consolas,monospace;color:var(--accent)}.steps h3{font-size:19px;margin:0 0 8px}.steps p{margin:0;font-size:15px}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:14px;text-align:left}td,th{border:1px solid var(--line);padding:14px 16px}th{background:#f1f0f5;font-weight:600}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#efedf3;border:1px solid #e3dfe9;border-radius:7px;padding:25px 28px;font:13px/1.9 Consolas,"Microsoft YaHei",monospace;letter-spacing:0;color:#615774;tab-size:2}code{font-family:inherit}.notes{margin:0}.notes>div{padding:20px 0;border-bottom:1px solid var(--line)}.notes dt{font-weight:650;margin-bottom:7px}.notes dd{margin:0;font-size:15px;color:var(--muted)}.contents{display:flex;flex-wrap:wrap;gap:12px 25px;padding-bottom:24px;border-bottom:1px solid var(--line);font-size:14px}.legal{max-width:720px;font-size:15px}.legal .article-header>p{font-size:13px}.legal h2{font-size:23px}.not-found{min-height:65vh;padding-block:100px}.not-found>p{font:15px Consolas,monospace;color:var(--accent)}.skip-link{position:fixed;top:-60px;left:20px;padding:12px 20px;background:white;border:2px solid var(--accent);z-index:10}.skip-link:focus{top:12px}
.language-switch{position:relative;flex:0 0 auto;border:0;padding:0;z-index:5}.language-switch summary{display:flex;align-items:center;gap:7px;padding:9px 2px;font-size:13px;font-weight:400;white-space:nowrap;color:#55515d;list-style:none}.language-switch summary::-webkit-details-marker{display:none}.language-switch summary::marker{content:""}.language-switch summary .ui-icon{width:13px;height:13px}.language-options{position:absolute;right:0;top:calc(100% + 7px);width:155px;padding:6px;background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:0 8px 28px #30233712}.language-options a{display:block;padding:10px 12px;border-radius:4px;font-size:13px;color:#55515d;text-decoration:none}.language-options a:hover,.language-options a[aria-current]{background:#f0edf7;color:var(--accent)}.related-links{margin-top:22px}
@media(min-width:1450px){.hero{padding-block:95px 110px}.hero h1{font-size:68px}}
@media(max-width:1000px){main,.site-header,.site-footer{width:calc(100% - 48px)}.hero{gap:36px;padding-block:55px 70px}.paper{padding:28px}.paper h2{font-size:27px}.hero-copy>p{font-size:15px}.example{grid-template-columns:1fr;gap:25px}.section-intro{display:grid;grid-template-columns:1fr 1fr;gap:10px 30px;align-items:center}.section-intro h2{grid-row:span 2}.section-intro p{max-width:100%;margin:0}.comparison pre{font-size:13px}.rendered-example p,.rendered-example li,.rendered-example blockquote{font-size:14px}.privacy-feature,.faq{gap:30px}.format-row{grid-template-columns:100px 1fr}.format-row>a{grid-column:2}.section{padding-block:50px}.site-header nav{gap:18px}}
@media(max-width:680px){main,.site-header,.site-footer{width:calc(100% - 36px)}.site-header{flex-wrap:wrap;gap:17px 15px;padding-block:20px}.site-header>.button{margin-left:auto}.site-header nav{order:3;width:100%;justify-content:space-between;margin:0;border-top:1px solid var(--line);padding-top:17px;gap:12px}.site-header nav a{font-size:13px}.hero{grid-template-columns:1fr;gap:36px;padding-block:38px 52px}.hero h1{font-size:45px}.hero-copy>p{font-size:15px}.hero-actions{gap:22px}.paper{transform:none;margin:0 8px;padding:27px}.paper h2{font-size:30px}.hero-copy .hero-note{font-size:11px}.section{padding-block:38px}.section-intro{display:block}.section-intro h2 br{display:none}.section-intro p{margin-bottom:15px}.comparison{grid-template-columns:1fr}.comparison>div:first-child{border-right:0;border-bottom:1px solid var(--line)}.comparison>div{padding:23px}.comparison pre{font-size:12px}.comparison h3{margin-bottom:16px}.format-row{grid-template-columns:1fr;gap:10px;padding-block:24px}.format-row>a{grid-column:1}.file-extension{font-size:13px}.format-row p{font-size:13px}.format-row h3{font-size:18px}.privacy-feature,.faq{grid-template-columns:1fr;gap:0}.privacy-feature h2 br{display:none}.privacy-feature p{font-size:14px}.faq h2{margin-bottom:10px}.faq details{padding-block:18px}.closing{align-items:flex-start;flex-direction:column;padding:35px 0 50px;gap:22px}.closing h2{font-size:27px}.site-footer{align-items:flex-start;flex-direction:column;gap:20px}.site-footer nav{flex-wrap:wrap;gap:20px}.article{margin:35px auto 55px;font-size:15px}.article-header{padding-bottom:27px;margin-bottom:28px}.article-header h1{font-size:34px}.article-header>p{font-size:15px}.article h2{font-size:24px;margin-top:34px}.article h3{font-size:18px}pre{font-size:12px;padding:19px 17px}td,th{padding:11px;font-size:12px}.steps>li{padding-left:36px}.contents{gap:12px 18px;font-size:13px}.not-found{padding-block:60px}.not-found h1{font-size:34px}}
@media(max-width:680px){.site-header{display:grid;grid-template-columns:auto minmax(0,1fr) auto;column-gap:15px}.site-header nav{grid-column:1/-1;grid-row:2}.site-header .language-switch{justify-self:end}.site-header>.button{margin-left:0}.language-options{right:-20px}}
@media(max-width:420px){.site-header{column-gap:10px}.site-header .button{padding:9px 10px;gap:6px;font-size:12px}.site-header .button .ui-icon{width:15px;height:15px}.language-switch summary{font-size:12px}.brand{font-size:21px;gap:7px}.brand-mark{width:28px;height:28px;flex-basis:28px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}