:root{--main:#2563eb;--ink:#111827;--muted:#6b7280;--line:#e5e7eb}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Songti SC","Noto Serif SC","SimSun",serif;background:#fff;color:var(--ink);font-size:17px;line-height:2}
a{color:var(--main);text-decoration:none}a:hover{text-decoration:underline}
.cr-top{border-bottom:1px solid var(--line);text-align:center;padding:18px 16px 14px}
.cr-logo{font-size:24px;font-weight:800;color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",sans-serif}
.cr-logo small{font-size:12px;color:var(--main);font-weight:400;margin-left:10px}
.cr-nav{margin-top:10px;font-size:14px;font-family:"PingFang SC","Microsoft YaHei",sans-serif}
.cr-nav a{color:var(--muted);margin:0 8px}
.cr-nav a.on{color:var(--main);font-weight:700;border-bottom:2px solid var(--main);padding-bottom:2px}
.cr-col{max-width:640px;margin:30px auto 50px;padding:0 20px}
.cr-item{padding:20px 0;border-bottom:1px solid var(--line)}
.cr-item__cat{font-size:12px;color:var(--main);letter-spacing:2px;font-family:"PingFang SC",sans-serif}
.cr-item__title{font-size:19px;font-weight:700;line-height:1.6;margin:8px 0 6px;font-family:"PingFang SC","Microsoft YaHei",sans-serif}
.cr-item__title a{color:var(--ink)}
.cr-item__meta{font-size:13px;color:var(--muted);font-family:"PingFang SC",sans-serif}
.cr-read{max-width:640px;margin:30px auto 50px;padding:0 20px}
.cr-read h1{font-size:26px;line-height:1.6;margin-bottom:14px;font-family:"PingFang SC","Microsoft YaHei",sans-serif}
.cr-read__byline{font-size:13px;color:var(--muted);margin-bottom:22px;font-family:"PingFang SC",sans-serif}
.cr-read__body h2{font-size:21px;margin:30px 0 12px;font-family:"PingFang SC","Microsoft YaHei",sans-serif}
.cr-read__body h3{font-size:18px;margin:22px 0 10px}
.cr-read__body p{margin-bottom:16px;text-align:justify}
.cr-read__body ul,.cr-read__body ol{margin:0 0 16px 26px}
.cr-read__body table{width:100%;border-collapse:collapse;font-size:14.5px;margin-bottom:16px;font-family:"PingFang SC",sans-serif}
.cr-read__body th,.cr-read__body td{border:1px solid var(--line);padding:8px 12px;text-align:left}
.cr-read__body blockquote{margin:0 0 16px;padding:12px 18px;border-left:3px solid var(--main);color:var(--muted);background:#f8fafc}
.cr-qr{margin-top:30px;padding:18px;border-top:1px dashed var(--main);text-align:center;font-family:"PingFang SC",sans-serif}
.cr-qr img{width:130px;border-radius:8px}
.cr-qr p{font-size:13px;color:var(--muted);margin:8px 0}
.cr-foot{border-top:1px solid var(--line);text-align:center;padding:18px;font-size:12.5px;color:var(--muted);font-family:"PingFang SC",sans-serif}
.cr-foot a{color:var(--muted)}
@media(max-width:480px){.cr-col,.cr-read{padding:0 16px}body{font-size:16px}}

.cr-title{font-size:26px;font-weight:800;text-align:center;margin:26px 0 6px}
.cr-intro{text-align:center;color:var(--muted);font-size:14px;max-width:640px;margin:0 auto 20px;line-height:1.8}