.bc{border-top:1px solid var(--em-line);margin-top:46px;padding-top:26px}.bc-title{font-family:var(--em-font-display);letter-spacing:-.02em;margin-bottom:16px;font-size:22px;font-weight:740}.bc-list{flex-direction:column;gap:12px;display:flex}.bc-item{border:1px solid var(--em-line);background:var(--em-surface);border-radius:14px;padding:15px 17px}.bc-item.is-pinned{border-color:var(--em-accent-edge);background:var(--em-accent-soft)}.bc-head{align-items:center;gap:8px;font-size:13px;display:flex}.bc-author{color:var(--em-text);font-weight:700}.bc-pin{font-family:var(--em-font-mono);color:var(--em-accent-text);border:1px solid var(--em-accent-edge);border-radius:999px;padding:2px 8px;font-size:10.5px}.bc-date{font-family:var(--em-font-mono);color:var(--em-text-muted);font-size:11.5px}.bc-body{color:var(--em-text-dim);white-space:pre-wrap;word-wrap:break-word;margin-top:8px;font-size:14.5px;line-height:1.6}.bc-muted{color:var(--em-text-muted);font-size:14px;line-height:1.55}.bc-form{border:1px solid var(--em-line);background:var(--em-bg-sub);border-radius:16px;margin-top:22px;padding:18px}.bc-form textarea{resize:vertical;box-sizing:border-box;width:100%;min-height:96px;font:inherit;color:var(--em-text);background:var(--em-surface);border:1px solid var(--em-line-strong);border-radius:11px;padding:12px 14px;font-size:14.5px}.bc-form textarea:focus{border-color:var(--em-accent-edge);outline:none}.bc-form-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-top:12px;display:flex}.bc-as{color:var(--em-text-muted);font-size:12.5px}.bc-as b{color:var(--em-text)}.bc-btn{cursor:pointer;background:linear-gradient(150deg, var(--em-accent-bright), var(--em-accent));color:var(--em-accent-ink);box-shadow:var(--em-shadow-glow);border:0;border-radius:10px;align-items:center;gap:8px;padding:10px 20px;font-size:14px;font-weight:600;display:inline-flex}.bc-btn:hover{filter:brightness(1.05)}.bc-btn:disabled{opacity:.55;cursor:not-allowed;filter:none}.bc-note{margin-top:12px;font-size:13px;line-height:1.5}.bc-note.is-ok{color:var(--em-ok,#35c07a)}.bc-note.is-warn{color:var(--em-warn,#d8973a)}.bc-note.is-err{color:var(--em-danger,#e06666)}.bc-login{border:1px dashed var(--em-line-strong);background:var(--em-surface);border-radius:14px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;margin-top:22px;padding:18px 20px;display:flex}.bc-login p{color:var(--em-text-dim);font-size:14px;line-height:1.5}.bc-login a{border:1px solid var(--em-line-strong);color:var(--em-text);background:var(--em-surface-2);white-space:nowrap;border-radius:10px;align-items:center;gap:7px;padding:9px 18px;font-size:13.5px;font-weight:600;text-decoration:none;display:inline-flex}.bc-login a:hover{border-color:var(--em-accent-edge)}.ba-root{flex-direction:column;min-height:100vh;display:flex}.th-on-light{display:none}html[data-theme=light] .th-on-light{display:inline-flex}html[data-theme=light] .th-on-dark{display:none}.ba-main{flex:1;width:100%;max-width:760px;margin:0 auto;padding:34px 22px 70px}.ba-back{font-family:var(--em-font-mono);color:var(--em-text-dim);align-items:center;gap:6px;font-size:13px;font-weight:600;text-decoration:none;display:inline-flex}.ba-back:hover{color:var(--em-accent-text)}.ba-head{margin-top:26px}.ba-eyebrow{font-family:var(--em-font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--em-accent-text);margin-bottom:12px;font-size:11px}.ba-h1{font-family:var(--em-font-display);letter-spacing:-.035em;font-size:clamp(28px,4.2vw,42px);font-weight:780;line-height:1.08}.ba-meta{font-family:var(--em-font-mono);color:var(--em-text-muted);flex-wrap:wrap;align-items:center;gap:8px;margin-top:16px;font-size:12.5px;display:flex}.ba-dot{opacity:.6}.ba-tags{flex-wrap:wrap;gap:7px;margin-top:14px;display:flex}.ba-tag{font-family:var(--em-font-mono);letter-spacing:.02em;color:var(--em-accent-text);border:1px solid var(--em-accent-edge);background:var(--em-accent-soft);border-radius:999px;padding:3px 9px;font-size:10.5px}.ba-cover{border:1px solid var(--em-line);background:var(--em-bg-sub);border-radius:16px;margin:28px 0 8px;overflow:hidden}.ba-cover img{object-fit:cover;width:100%;height:auto;display:block}.ba-prose{color:var(--em-text-dim);margin-top:30px;font-size:16.5px;line-height:1.72}.ba-prose>:first-child{margin-top:0}.ba-prose h2{font-family:var(--em-font-display);letter-spacing:-.02em;color:var(--em-text);margin:34px 0 12px;font-size:clamp(21px,2.6vw,27px);font-weight:740;line-height:1.2}.ba-prose h3{font-family:var(--em-font-display);letter-spacing:-.01em;color:var(--em-text);margin:26px 0 10px;font-size:19px;font-weight:700}.ba-prose p{margin:14px 0}.ba-prose ul,.ba-prose ol{margin:14px 0;padding-left:24px}.ba-prose li{margin:7px 0}.ba-prose li::marker{color:var(--em-accent-text)}.ba-prose a{color:var(--em-accent-text);text-underline-offset:2px;text-decoration:underline}.ba-prose strong{color:var(--em-text);font-weight:700}.ba-prose em{font-style:italic}.ba-prose blockquote{border-left:3px solid var(--em-accent-edge);background:var(--em-surface);color:var(--em-text);border-radius:0 10px 10px 0;margin:18px 0;padding:10px 18px}.ba-prose code{font-family:var(--em-font-mono);background:var(--em-surface-2);border:1px solid var(--em-line);border-radius:6px;padding:1px 6px;font-size:.9em}.ba-prose pre{background:var(--em-surface);border:1px solid var(--em-line);border-radius:12px;margin:18px 0;padding:16px;overflow-x:auto}.ba-prose pre code{background:0 0;border:0;padding:0}.ba-prose img{border-radius:12px;max-width:100%;height:auto}.ba-foot{border-top:1px solid var(--em-line);margin-top:40px;padding-top:22px}