/* FUMEI 博客页样式（/blog、/blog/<slug>）。配色与首页一致。 */
@font-face{font-family:'Inter';font-style:normal;font-weight:100 900;font-display:swap;src:url(/assets/fonts/inter-latin-wght-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Inter';font-style:normal;font-weight:100 900;font-display:swap;src:url(/assets/fonts/inter-latin-ext-wght-normal.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
:root{--ink:#142638;--muted:#5e6b7a;--line:#e3eaf0;--blue:#376cf6;--bg:#f7f9fc;--card:#fff;--side:clamp(18px,5vw,64px)}
*{box-sizing:border-box}html{scroll-padding-top:90px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.7 'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;overflow-x:clip}
a{color:var(--blue);text-underline-offset:3px}a:hover{color:#1f4fd0}
img{max-width:100%;display:block}
.b-wrap{max-width:1180px;margin:0 auto;padding:0 var(--side)}
.b-header{position:sticky;top:0;z-index:10;background:#fffffff0;border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.b-nav{display:flex;align-items:center;gap:28px;height:72px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:700;letter-spacing:-.02em;font-size:22px;line-height:1}
.brand svg{width:30px;height:30px}.brand small{display:block;font-size:12px;font-weight:500;letter-spacing:.12em;margin-top:3px}
.b-nav nav{display:flex;gap:24px;margin-left:auto}.b-nav nav a{color:#304c66;text-decoration:none;font-size:15px}.b-nav nav a[aria-current]{color:var(--blue);font-weight:600}
.b-btn{display:inline-flex;align-items:center;gap:8px;background:var(--blue);color:#fff;text-decoration:none;border-radius:999px;padding:13px 22px;font-weight:600;font-size:16px;line-height:1.2}
.b-btn:hover{background:#1f4fd0;color:#fff}.b-btn.small{padding:10px 16px;font-size:14px;white-space:nowrap}
.b-crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;padding:0;margin:26px 0 0;font-size:14px;color:var(--muted)}
.b-crumbs li+li:before{content:'›';margin-right:6px;color:#9aa7b4}.b-crumbs a{color:var(--muted);text-decoration:none}.b-crumbs a:hover{color:var(--blue)}
.b-crumbs li[aria-current]{max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.b-eyebrow{font-size:13px;letter-spacing:.12em;color:#71849a;margin:0 0 10px}
.b-hero{padding:40px 0 20px;max-width:760px}.b-hero h1{font-size:clamp(34px,5vw,54px);line-height:1.08;letter-spacing:-.035em;margin:0 0 16px}.b-hero p{color:var(--muted);font-size:18px;margin:0}
.b-list{list-style:none;padding:0;margin:30px 0;display:grid;gap:22px}
.b-card{display:grid;grid-template-columns:260px 1fr;gap:26px;background:var(--card);border:1px solid var(--line);border-radius:16px;overflow:hidden;padding:0 26px 0 0}
.b-card-img img{width:100%;height:100%;min-height:200px;object-fit:cover}
.b-card>div{padding:24px 0}.b-card h2{font-size:23px;line-height:1.25;letter-spacing:-.02em;margin:4px 0 8px}.b-card h2 a{color:var(--ink);text-decoration:none}.b-card h2 a:hover{color:var(--blue)}
.b-card p{margin:0 0 10px;color:var(--muted);font-size:16px}.b-more{font-weight:600;text-decoration:none;font-size:15px}
.b-meta{font-size:14px;color:#71849a;margin:0}
.b-article{max-width:760px;margin:0 auto;padding:30px 0 10px}
.b-article>header h1{font-size:clamp(30px,4.4vw,46px);line-height:1.12;letter-spacing:-.03em;margin:0 0 14px}
.b-toc{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 22px;margin:28px 0}
.b-toc p{margin:0 0 6px;font-weight:600;font-size:15px}.b-toc ol{margin:0;padding-left:20px;font-size:15px;line-height:1.8}.b-toc a{text-decoration:none}
.b-body h2{font-size:28px;line-height:1.25;letter-spacing:-.02em;margin:46px 0 12px}.b-body h3{font-size:21px;line-height:1.3;margin:32px 0 8px}
.b-body p,.b-body li{color:#22364b}.b-body ul,.b-body ol{padding-left:24px}.b-body li{margin:6px 0}
.b-body li.check{list-style:none;margin-left:-22px}.b-body .box{display:inline-block;width:22px;color:var(--blue)}
.b-body blockquote{margin:22px 0;padding:18px 22px;background:#fff;border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:10px;font-size:15px;line-height:1.75;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;overflow-wrap:anywhere}
.b-body blockquote p{margin:0}
.table-wrap{overflow-x:auto;margin:20px 0}.b-body table{border-collapse:collapse;width:100%;font-size:15px;background:#fff}.b-body th,.b-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.b-cta{margin:50px 0 20px;padding:30px;border-radius:18px;background:var(--ink);color:#fff}
.b-cta h2{margin:0 0 8px;font-size:26px;letter-spacing:-.02em;line-height:1.25}.b-cta p{margin:0 0 20px;color:#c9d6e4}
.b-related{max-width:760px;margin:20px auto 60px}.b-related h2{font-size:20px}.b-related ul{padding-left:20px}
.b-empty{margin:30px 0;color:var(--muted)}
.b-footer{margin-top:60px;background:#fff;border-top:1px solid var(--line);padding:34px 0;font-size:14px;color:var(--muted)}
.b-foot-top{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}.b-foot-top p{margin:0}
.b-foot-links{display:flex;flex-wrap:wrap;gap:18px;margin-top:20px}.b-foot-links a{color:#304c66;text-decoration:none}.b-foot-links span{margin-left:auto}
@media(max-width:760px){body{font-size:16px}.b-nav{gap:14px;height:64px}.b-nav nav{gap:14px}.b-nav nav a:not([aria-current]){display:none}.brand{font-size:19px}.brand small{font-size:10px}
.b-card{grid-template-columns:1fr;padding:0}.b-card>div{padding:0 20px 22px}.b-card-img img{min-height:0;aspect-ratio:16/9}
.b-crumbs li[aria-current]{max-width:28ch}.b-body h2{font-size:24px}.b-cta{padding:24px}.b-foot-links span{margin-left:0;width:100%}}
@media(max-width:400px){.b-btn.small{padding:9px 12px;font-size:13px}}