:root{--ink:#1f2328;--muted:#6b7280;--line:#e8eaee;--bg:#f4f5f7;--brand:#0f766e;--accent:#f59e0b;--card:#fff}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;background:var(--bg);color:var(--ink);font-size:16px;line-height:1.8}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.top .in{max-width:1120px;margin:auto;display:flex;align-items:center;gap:20px;padding:10px 16px}
.logo{font-size:22px;font-weight:800;color:var(--ink);letter-spacing:.5px;white-space:nowrap}.logo b{color:var(--brand)}.logo small{font-size:12px;color:var(--muted);font-weight:400;margin-left:6px}
.nav{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}.nav::-webkit-scrollbar{display:none}
.nav a{color:var(--ink);padding:6px 12px;border-radius:6px;font-size:15px;white-space:nowrap}.nav a:hover,.nav a.on{background:#ecfdf5;color:var(--brand);text-decoration:none}
@media(max-width:640px){.top .in{flex-direction:column;align-items:flex-start;gap:4px;padding:8px 12px}.logo small{display:none}.nav a{padding:4px 10px;font-size:14px}}
.wrap{max-width:1120px;margin:20px auto;padding:0 16px;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px}
@media(max-width:900px){.wrap{grid-template-columns:minmax(0,1fr);padding:0 10px;margin-top:12px}}
.box{background:var(--card);border-radius:10px;border:1px solid var(--line);padding:18px 20px;margin-bottom:16px}
@media(max-width:640px){.box{padding:14px 14px;border-radius:8px}}
.side h4{margin:0 0 10px;font-size:15px;border-left:3px solid var(--brand);padding-left:8px}
.side ul{list-style:none;margin:0;padding:0}.side li{padding:7px 0;border-bottom:1px dashed var(--line);font-size:14px;line-height:1.5}.side li:last-child{border:0}
.side .price{color:#dc2626;font-weight:700;margin-left:4px}
.post{display:flex;gap:16px;align-items:flex-start}
.post .th{flex:0 0 220px;border-radius:8px;overflow:hidden;border:1px solid var(--line)}
.post h2{font-size:19px;margin:0 0 6px;line-height:1.45}.post h2 a{color:var(--ink)}
.post p{margin:0 0 6px;color:#444;font-size:15px}
@media(max-width:640px){.post{flex-direction:column}.post .th{flex:none;width:100%}}
.meta{color:var(--muted);font-size:13px}
.tag{display:inline-block;font-size:12px;line-height:1;padding:4px 7px;border-radius:4px;background:#ecfdf5;color:var(--brand);margin-right:6px;vertical-align:2px}
.tag.hot{background:#fef3c7;color:#b45309}
.hero h1{font-size:24px;margin:0 0 6px}.hero p{margin:0;color:#444}
/* article */
.art h1{font-size:26px;line-height:1.4;margin:6px 0 8px}
@media(max-width:640px){.art h1{font-size:21px}}
.art h2{font-size:20px;margin:34px 0 12px;padding-bottom:6px;border-bottom:2px solid var(--line)}
.art h3{font-size:17px;margin:22px 0 8px}
.art p{margin:0 0 14px}
.art figure{margin:16px 0}.art figure img{border-radius:8px;border:1px solid var(--line);width:100%}
.art figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:6px}
.art ul{padding-left:1.3em}.art li{margin:4px 0}
.tbl{overflow-x:auto;margin:12px 0 16px}
table{width:100%;border-collapse:collapse;font-size:14px;min-width:420px}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}th{background:#f8fafc;white-space:nowrap}
code{background:#f1f5f9;padding:1px 6px;border-radius:4px;font-size:.9em;word-break:break-all}
blockquote{margin:14px 0;padding:10px 14px;border-left:4px solid var(--accent);background:#fffbeb;color:#57534e;border-radius:0 6px 6px 0}
.tip{background:#f0fdfa;border:1px solid #ccfbf1;border-radius:8px;padding:10px 14px;margin:14px 0;font-size:15px}
.warn{background:#fff7ed;border:1px solid #fed7aa;border-radius:8px;padding:10px 14px;margin:14px 0;font-size:15px}
.pc{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:12px 0}@media(max-width:640px){.pc{grid-template-columns:1fr}}
.pc>div{border-radius:8px;padding:10px 14px}.pc .g{background:#f0fdf4}.pc .b{background:#fef2f2}.pc b{display:block;margin-bottom:4px}
.pc ul{margin:0;padding-left:1.2em;font-size:15px}
.spec{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:14px 0}
@media(max-width:640px){.spec{grid-template-columns:repeat(2,1fr)}}
.spec div{background:#f8fafc;border:1px solid var(--line);border-radius:8px;padding:10px;text-align:center}
.spec strong{display:block;font-size:20px;color:var(--brand)}.spec span{font-size:12px;color:var(--muted)}
.author{display:flex;gap:10px;align-items:center;font-size:13px;color:var(--muted);margin-bottom:10px}
.author .av{width:34px;height:34px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:8px 16px;border-radius:6px;font-size:15px;margin:4px 8px 4px 0}.btn:hover{text-decoration:none;opacity:.9}.btn.o{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.foot{text-align:center;color:var(--muted);font-size:13px;padding:24px 16px 36px}