.wechat-contact-trigger{margin-left:auto;flex-shrink:0;display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:36px;padding:7px 12px;border:1px solid #cbd7c5;border-radius:5px;background:#edf2e7;color:#2c694d;font-size:12px;line-height:1.3;cursor:pointer}
.wechat-contact-trigger svg{width:20px;height:20px;flex-shrink:0}
.wechat-contact-trigger:hover{background:#e0ead8;border-color:#a6bea2}
.wechat-contact-trigger:focus-visible,.wechat-card a:focus-visible,.wechat-close:focus-visible{outline:3px solid #ed623e;outline-offset:4px}
.wechat-card{position:fixed;inset:76px max(20px,calc((100vw - 1240px)/2)) auto auto;margin:0;width:310px;max-width:calc(100vw - 32px);max-height:calc(100svh - 96px);padding:14px;border:1px solid #d9ddd2;border-radius:9px;background:#fff;color:#3f5843;box-shadow:0 12px 38px #1e392523;overflow:auto}
.wechat-card::backdrop{background:transparent}
.wechat-card:popover-open{display:grid;gap:8px}
.wechat-card-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:0;font-size:13px;line-height:1.5}
.wechat-close{display:grid;place-items:center;width:30px;height:30px;padding:0;border:0;border-radius:4px;background:#f0f3eb;color:#63745d;font:20px/1 Arial,sans-serif;cursor:pointer}
.wechat-qr-link{display:grid;place-items:center}
.wechat-qr-link img{display:block;width:auto;height:auto;max-width:100%;max-height:calc(100svh - 205px)}
.wechat-card-note{margin:0;text-align:center;color:#78846f;font-size:11px;line-height:1.7}
@media(max-width:680px){.wechat-contact-trigger{width:36px;min-height:36px;padding:7px}.wechat-contact-trigger>span{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.wechat-card{inset:72px 16px auto auto}}
@media(max-width:420px){.site-header .brand{gap:8px}.site-header .brand>img{width:28px;height:28px}.site-header .brand>span{font-size:19px}.site-header .author-credit{margin-left:8px;font-size:10px}}