:root{--ink:#272a30;--muted:#737780;--accent:#a75c33;--line:#e8e9ec;color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:63px}body{margin:0;background:#fff;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}:focus,:focus-visible{outline:none!important}h1,h2,p{margin:0}.wrap{width:min(1120px,calc(100% - 64px));margin-inline:auto}a:hover{color:var(--accent)}
.nav{position:sticky;top:0;z-index:20;background:#fffffff2;border-bottom:1px solid var(--line);backdrop-filter:blur(20px)}.nav-inner{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:14px}.brand-product{font-size:18px;font-weight:650}.back{font-size:13px;color:var(--muted)}
.article-layout{width:min(1000px,calc(100% - 64px));max-width:1000px;padding-block:64px 88px;min-height:70vh}.article{min-width:0}.article-head{border-bottom:1px solid var(--line);padding-bottom:36px}.eyebrow{font:11px ui-monospace,Consolas,monospace;letter-spacing:1.8px;color:var(--accent);line-height:1.8}.eyebrow span{letter-spacing:.5px}h1{font-size:clamp(30px,3.2vw,42px);line-height:1.4;letter-spacing:-.035em;font-weight:600;margin-top:20px}.summary{font-size:17px;line-height:1.9;color:var(--muted);margin-top:24px}.meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;color:#82837b;font-size:12px;margin-top:28px}.article-body section{padding-top:44px}.article-body h2{font-size:25px;line-height:1.5;font-weight:600;margin-bottom:20px}.article-body p{font-size:17px;line-height:2;margin-top:15px;color:#454b55;overflow-wrap:anywhere}.article-end{margin-top:40px;padding-top:22px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;line-height:1.8;color:var(--muted)}.article-end a{color:var(--accent)}
.code-block{margin:26px 0;background:#f7f8fa;border:1px solid #e8ebef;border-radius:10px;overflow:hidden}.code-block figcaption{display:flex;justify-content:space-between;gap:16px;padding:12px 20px;border-bottom:1px solid #e8ebef;color:#69717e;font-size:12px;line-height:1.6}.code-block figcaption span{font-family:ui-monospace,Consolas,monospace;white-space:nowrap;color:#9197a1}.code-block pre{margin:0;padding:20px;overflow-x:auto;color:#344253;font:13px/1.85 ui-monospace,SFMono-Regular,Consolas,monospace;tab-size:4}.code-block code{font:inherit}
.article-table{max-width:100%;overflow-x:auto;margin:28px 0}.article-table table{width:100%;border-collapse:collapse;text-align:left;font-size:14px;line-height:1.75}.article-table caption{text-align:left;font-size:12px;color:#737780;margin-bottom:12px}.article-table th,.article-table td{padding:12px 16px;border-bottom:1px solid #e8ebef;vertical-align:top}.article-table th{background:#f7f8fa;font-weight:600;color:#444b56;white-space:nowrap}.article-table td{color:#555e6b;min-width:110px}
.empty{padding:65px 0 100px}.empty p:not(.eyebrow){margin:25px 0;color:var(--muted);line-height:1.9}.empty>a{font-size:14px;color:var(--accent)}.footer{padding:35px 0;background:#f7f8fa;color:#747982;font-size:13px}.footer strong{color:#383e47;font-weight:600}.footer-inner{display:flex;align-items:center;justify-content:space-between;gap:25px;line-height:1.8}.copyright{display:flex;flex-direction:column;text-align:right;font-size:11px;gap:4px}
@media(min-width:1440px){.nav .wrap,.footer .wrap{width:88%;max-width:1600px}}
@media(max-width:1000px){.footer-inner{align-items:start;flex-direction:column}.copyright{text-align:left}}
@media(max-width:760px){.wrap{width:calc(100% - 40px)}.article-layout{width:calc(100% - 40px);padding-block:36px 56px}.brand{gap:10px}.brand-product{font-size:16px}.back{font-size:12px}h1{font-size:30px}.summary{font-size:16px}.article-body section{padding-top:34px}.article-body h2{font-size:22px}.article-body p{font-size:16px}.meta{gap:8px}.code-block figcaption{padding:10px 14px}.code-block pre{padding:16px;font-size:12px}.article-table th,.article-table td{padding:10px 12px}.footer-inner{align-items:center;text-align:center}.copyright{text-align:center}}
@media(max-width:600px){html{scroll-padding-top:58px}.nav-inner{min-height:59px}.brand-product{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.brand-logo{display:block;width:136px;height:32px;object-fit:contain;flex-shrink:0}@media(max-width:760px){.brand-logo{width:123.25px;height:29px}}