:root{--bg:#fff;--text:#2b2622;--muted:#7a6f66;--brand:#c8642b;--brand-dark:#8a4a22;--soft:#fbf4ec;--line:#eadfd3;--code:#f6f1ea;--max:1120px}
@media (prefers-color-scheme:dark){:root{--bg:#1b1714;--text:#ece4db;--muted:#a99d92;--brand:#e58b52;--brand-dark:#f0a877;--soft:#25201b;--line:#3a322b;--code:#241f1a}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.7 system-ui,-apple-system,"PingFang TC","Microsoft JhengHei","Noto Sans TC",sans-serif}
a{color:var(--brand-dark);text-decoration:none}a:hover{color:var(--brand);text-decoration:underline}
img{max-width:100%;height:auto}
.wrap{max-width:var(--max);margin:0 auto;padding:0 16px}
.narrow{max-width:760px}
.muted{color:var(--muted)}.small{font-size:.85rem}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--brand);color:#fff;padding:6px 10px;z-index:99}
.btn{display:inline-block;background:var(--brand);color:#fff;border:0;border-radius:8px;padding:8px 16px;font:inherit;cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--brand-dark);color:#fff;text-decoration:none}
.btn.ghost{background:transparent;color:var(--brand-dark);border:1px solid var(--brand)}
.btn.big{padding:12px 22px;font-size:1.05rem}
/* header */
.site-header{border-bottom:1px solid var(--line);background:var(--bg);position:sticky;top:0;z-index:20}
.bar{display:flex;align-items:center;gap:16px;min-height:60px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text);font-size:1.1rem}
.brand:hover{text-decoration:none;color:var(--brand)}
.logo{background:var(--brand-dark);color:#fff;border-radius:8px;padding:2px 8px;font-size:.95rem}
.nav{display:flex;gap:4px;align-items:center;flex:1;flex-wrap:wrap}
.nav>a,.dd>summary{padding:8px 10px;border-radius:6px;color:var(--text);cursor:pointer;list-style:none}
.nav>a:hover,.dd>summary:hover{background:var(--soft);text-decoration:none}
.dd{position:relative}.dd>summary::-webkit-details-marker{display:none}
.dd>summary::after{content:" ▾";font-size:.75em;color:var(--muted)}
.dd .menu{position:absolute;top:100%;left:0;background:var(--bg);border:1px solid var(--line);border-radius:10px;min-width:200px;padding:6px;box-shadow:0 8px 24px rgba(0,0,0,.12);z-index:30}
.dd .menu a{display:block;padding:7px 10px;border-radius:6px;color:var(--text)}.dd .menu a:hover{background:var(--soft);text-decoration:none}
.search input{border:1px solid var(--line);background:var(--bg);color:var(--text);border-radius:8px;padding:8px 12px;font:inherit;width:190px}
.search.big{display:flex;gap:8px;max-width:520px}.search.big input{flex:1;width:auto}
.chips{display:flex;gap:8px;overflow-x:auto;padding-top:6px;padding-bottom:10px;scrollbar-width:thin}
.chip{white-space:nowrap;background:var(--soft);border:1px solid var(--line);border-radius:999px;padding:3px 12px;font-size:.88rem;color:var(--text)}
.chip:hover{border-color:var(--brand);text-decoration:none}
/* hero etc */
.hero{background:linear-gradient(180deg,var(--soft),var(--bg));padding:48px 0 32px}
.hero-in{display:grid;grid-template-columns:1.2fr 1fr;gap:32px;align-items:center}
.hero h1{font-size:2.2rem;line-height:1.25;margin:0 0 12px}
.lead{font-size:1.1rem;color:var(--muted);margin:.4rem 0 1rem}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.feature{display:flex;flex-direction:column;gap:6px;background:var(--bg);border:1px solid var(--line);border-left:5px solid var(--brand);border-radius:12px;padding:20px;color:var(--text)}
.feature:hover{text-decoration:none;border-color:var(--brand)}.feature strong{font-size:1.2rem}.label{color:var(--brand);font-size:.8rem;font-weight:700;letter-spacing:.08em}
.block{padding-top:28px;padding-bottom:28px}
.sec{font-size:1.4rem;margin:0 0 16px;padding-left:12px;border-left:4px solid var(--brand)}
.pillars{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.pillar{display:flex;flex-direction:column;gap:6px;background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:18px;color:var(--text)}
.pillar:hover{border-color:var(--brand);text-decoration:none}.pillar .ico{font-size:1.8rem}.pillar em{color:var(--brand-dark);font-style:normal;font-size:.85rem}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--bg);display:flex;flex-direction:column}
.card:hover{box-shadow:0 6px 20px rgba(0,0,0,.08)}
.thumb{display:block;aspect-ratio:16/9;background:var(--soft)}.thumb img{width:100%;height:100%;object-fit:cover;display:block}
.ph{display:flex;align-items:center;justify-content:center;height:100%;font-size:2.6rem}
.card .body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:6px}
.card h3{margin:0;font-size:1.05rem;line-height:1.45}.card h3 a{color:var(--text)}.card p{margin:0;color:var(--muted);font-size:.92rem}
.meta{display:flex;gap:10px;flex-wrap:wrap;align-items:center;color:var(--muted);font-size:.85rem}
.tag-cat{background:var(--soft);border-radius:999px;padding:1px 10px;color:var(--brand-dark)}
.subscribe{background:var(--soft);text-align:center;padding:40px 0;margin-top:20px}
.page-head{background:var(--soft);padding:32px 0;border-bottom:1px solid var(--line)}.page-head h1{margin:0 0 6px}
.pager{display:flex;justify-content:center;gap:20px;margin-top:28px;align-items:center}
ul.plain{list-style:none;padding:0;margin:0 0 24px}ul.plain li{padding:6px 0;border-bottom:1px dashed var(--line)}ul.plain time{color:var(--muted);margin-right:10px;font-variant-numeric:tabular-nums}
/* post */
.post{padding-top:28px}.post-head{max-width:760px;margin:0 auto 12px}.post-head h1{font-size:2rem;line-height:1.3;margin:.4rem 0}
.post-grid{display:grid;grid-template-columns:minmax(0,720px) 220px;gap:40px;justify-content:center}
.post-main{min-width:0}
.toc{position:sticky;top:90px;align-self:start;font-size:.88rem;display:flex;flex-direction:column;gap:4px;border-left:2px solid var(--line);padding-left:14px;max-height:calc(100vh - 120px);overflow:auto}
.toc a{color:var(--muted)}.toc a.l3{padding-left:12px}.toc a.on{color:var(--brand);font-weight:600}
.series-box{background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin-bottom:18px}
.prose{font-size:1.125rem;line-height:1.85;overflow-wrap:anywhere}
.prose h2{margin:2.2rem 0 .8rem;font-size:1.5rem;scroll-margin-top:80px}.prose h3{margin:1.8rem 0 .6rem;font-size:1.25rem;scroll-margin-top:80px}
.prose blockquote{margin:1.2rem 0;padding:.4rem 1rem;border-left:4px solid var(--brand);background:var(--soft);color:var(--muted)}
.prose pre{background:var(--code);border:1px solid var(--line);border-radius:10px;padding:14px 16px;overflow:auto;position:relative;font-size:.92rem;line-height:1.6}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em}
.prose :not(pre)>code{background:var(--code);padding:1px 6px;border-radius:5px}
.prose table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--line);padding:8px 12px;text-align:left}.prose th{background:var(--soft)}
.prose img{border-radius:8px;display:block;margin:1rem auto}
.copy-btn{position:absolute;top:8px;right:8px;font-size:.75rem;background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:2px 8px;cursor:pointer;color:var(--muted)}
.callout{border:1px solid var(--line);border-left:5px solid var(--brand);border-radius:10px;background:var(--soft);margin:1.2rem 0;padding:10px 16px;position:relative}
.callout-title{font-weight:700;font-size:.9rem;margin-bottom:2px}.callout-body>:first-child{margin-top:.3rem}.callout-body>:last-child{margin-bottom:.3rem}
.callout-warning{border-left-color:#d9534f}.callout-tip{border-left-color:#3c9a5f}.callout-note{border-left-color:#4a7fc1}
.callout-prompt{border-left-color:#7a5bc7;font-family:ui-monospace,Menlo,monospace}.callout-cmd{border-left-color:#555}
.stale{margin-top:12px}
.video{position:relative;aspect-ratio:16/9;margin:1.2rem 0}.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0;border-radius:10px}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin:24px 0}.tags a{background:var(--soft);border-radius:6px;padding:2px 10px;font-size:.9rem}
.series-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:24px 0}
.series-nav a{display:block;border:1px solid var(--line);border-radius:10px;padding:12px 14px;color:var(--text)}.series-nav a.r{text-align:right}.series-nav small{display:block;color:var(--muted)}
.author{display:flex;flex-direction:column;background:var(--soft);border-radius:12px;padding:16px;margin-top:24px}
/* footer */
.site-footer{border-top:1px solid var(--line);margin-top:40px;padding-top:32px;background:var(--soft)}
.cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:24px}.cols>div{display:flex;flex-direction:column;gap:4px}.cols p{margin:4px 0;color:var(--muted);font-size:.9rem}
.copy{padding-top:20px;padding-bottom:28px;color:var(--muted);font-size:.85rem}
@media (max-width:960px){.grid{grid-template-columns:repeat(2,1fr)}.pillars{grid-template-columns:repeat(2,1fr)}.post-grid{grid-template-columns:minmax(0,1fr)}.toc{display:none}.hero-in{grid-template-columns:1fr}.cols{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.site-header{position:static}.bar{gap:8px;padding-top:8px;padding-bottom:4px}.nav{order:3;flex-basis:100%}.brand span:last-child{display:none}.search{flex:1}.search input{width:100%}.dd .menu{position:fixed;left:16px;right:16px;top:auto;min-width:0}.grid,.pillars,.cols{grid-template-columns:1fr}.hero h1{font-size:1.7rem}.search input{width:140px}.post-head h1{font-size:1.6rem}.prose{font-size:1.05rem}.series-nav{grid-template-columns:1fr}}
.prose pre code.hljs{background:transparent;padding:0}
.prose pre code{display:block}