:root{--navy:#16283C;--paper:#F7F9FB;--teal:#1E7A8C;--orange:#E8630A;--sand:#E9E2D4;--line:#D9E0E7;--mut:#5B6B7B}
*{box-sizing:border-box}body{margin:0;font-family:"Noto Sans TC",sans-serif;background:var(--paper);color:var(--navy);line-height:1.8}
.mono{font-family:"IBM Plex Mono",monospace}.wrap{max-width:1080px;margin:0 auto;padding:0 20px}.wrap-narrow{max-width:720px;margin:0 auto;padding:0 20px}
a{color:var(--teal);text-decoration:none}a:hover{text-decoration:underline}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px;z-index:99}
.util{background:var(--navy);color:#cdd8e2;font-size:12.5px}.util .wrap{display:flex;justify-content:space-between;padding:7px 20px;flex-wrap:wrap;gap:6px}.util a{color:#cdd8e2}
nav{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:20}nav .wrap{display:flex;align-items:center;gap:22px;padding:12px 20px}
.logo{font-weight:900;font-size:19px;color:var(--navy);display:flex;align-items:center;gap:8px}.logo .sq{background:var(--orange);color:#fff;width:30px;height:30px;display:grid;place-items:center;border-radius:7px}
nav ul{list-style:none;display:flex;gap:20px;margin:0 0 0 auto;padding:0;flex-wrap:wrap}nav ul a{color:var(--navy);font-weight:500;font-size:15px}
.post{padding:34px 0 10px}.crumb{font-size:13px;color:var(--mut);margin-bottom:16px}.crumb a{color:var(--mut)}
.eyebrow{font-family:"IBM Plex Mono",monospace;font-size:12.5px;color:var(--orange);letter-spacing:.14em;font-weight:500;margin-bottom:12px}
h1{font-weight:900;font-size:clamp(25px,4.2vw,37px);line-height:1.32;margin:0 0 16px}
.byline{font-size:12.5px;color:var(--mut);margin:0 0 22px}
.cover{width:100%;border-radius:12px;margin:6px 0 26px;border:1px solid var(--line)}
.tldr{background:#fff;border:1px solid var(--line);border-left:4px solid var(--teal);border-radius:10px;padding:16px 20px;margin:0 0 30px}
.tldr-h{font-size:12px;letter-spacing:.16em;color:var(--teal);font-weight:500;margin-bottom:6px}.tldr p{margin:0;font-size:15.5px;color:#33465a}
.prose{font-size:17px}.prose h2{font-weight:900;font-size:23px;margin:38px 0 14px;padding-top:14px;border-top:2px solid var(--sand)}
.prose h3{font-weight:700;font-size:19px;margin:26px 0 10px;color:#22384d}.prose p{margin:0 0 18px}
.prose img{max-width:100%;border-radius:10px;margin:14px 0;border:1px solid var(--line)}
.prose blockquote{border-left:4px solid var(--orange);background:#fff;margin:20px 0;padding:12px 20px;color:#3a4d60;border-radius:0 8px 8px 0}
.prose ul,.prose ol{padding-left:24px;margin:0 0 18px}.prose li{margin:7px 0}
.prose table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14.5px;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}.prose th{background:var(--navy);color:#fff;font-weight:700}
.prose tr:nth-child(even) td{background:#fff}
.prose a{border-bottom:1px solid var(--teal)}.prose strong{color:var(--navy)}
.cta-box{background:var(--navy);color:#e8eef4;border-radius:14px;padding:28px 26px;margin:40px 0 10px;text-align:center}
.cta-box h3{margin:0 0 8px;font-size:21px;font-weight:900;color:#fff}.cta-box p{margin:0 0 14px;font-size:14.5px;color:#b7c5d3}
.cta-box .cta{display:inline-block;background:var(--orange);color:#fff;font-weight:700;padding:12px 30px;border-radius:8px;margin:4px 0 14px}.cta-box .cta:hover{text-decoration:none;opacity:.92}
.cta-box .src{font-size:11.5px;color:#8ba0b3;margin:0}.cta-box .src a{color:#b7c5d3}
.faq{margin:42px 0 0}.faq h2{font-weight:900;font-size:23px;margin:0 0 16px;padding-top:14px;border-top:2px solid var(--sand)}
.qa{border:1px solid var(--line);border-radius:10px;margin:0 0 10px;background:#fff;padding:0 18px}
.qa summary{cursor:pointer;font-weight:700;padding:15px 0;font-size:16px;list-style:none;color:var(--navy)}
.qa summary::-webkit-details-marker{display:none}.qa summary::before{content:"＋";color:var(--teal);margin-right:10px}
.qa[open] summary::before{content:"－"}.qa p{margin:0 0 16px;color:#3a4d60;font-size:15.5px}
footer.site{border-top:1px solid var(--line);background:#fff;padding:26px 0;font-size:12.5px;color:var(--mut);margin-top:30px}footer.site p{margin:4px 0}
/* listing */
.bloghero{padding:40px 0 8px}.bloghero h1{font-size:clamp(27px,5vw,40px)}.bloghero .lead{font-size:16px;color:var(--mut);max-width:640px}
.catbar{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0 8px}.catbar a{border:1px solid var(--line);border-radius:20px;padding:6px 15px;font-size:13.5px;color:var(--navy);background:#fff}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px;padding:24px 0 40px}
.pcard{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column}.pcard:hover{border-color:var(--teal)}
.pcard img{width:100%;aspect-ratio:16/9;object-fit:cover}.pcard .b{padding:15px 17px;display:flex;flex-direction:column;flex:1}
.pcard .c{font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--orange);letter-spacing:.1em;margin-bottom:7px}
.pcard h2{font-size:16.5px;font-weight:700;line-height:1.45;margin:0 0 8px;color:var(--navy)}
.pcard .x{font-size:13px;color:var(--mut);margin:0 0 10px;flex:1}.pcard .d{font-family:"IBM Plex Mono",monospace;font-size:11.5px;color:var(--mut)}
@media(max-width:640px){nav ul{gap:13px;font-size:14px}.prose{font-size:16px}}