:root{--bt-primary:#1da1f2;--bt-primary-dark:#0c85d0;--bt-border:#e1e8ed;--bt-bg:#ffffff;--bt-bg-hover:#f5f8fa;--bt-text:#14171a;--bt-muted:#657786;--bt-radius:12px;--bt-shadow:0 1px 3px rgba(0,0,0,.08)}.bt-timeline{max-width:600px;margin:0 auto;direction:rtl;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}.bt-notice{padding:12px 16px;border-radius:var(--bt-radius);margin-bottom:16px;font-size:14px;text-align:center}.bt-notice--info{background:#e8f4fd;border:1px solid #bee3f8;color:#2b6cb0}.bt-notice a{color:var(--bt-primary)}.bt-compose-box{display:flex;gap:12px;background:var(--bt-bg);border:1px solid var(--bt-border);border-radius:var(--bt-radius);padding:16px;margin-bottom:16px;box-shadow:var(--bt-shadow)}.bt-compose-avatar img{width:48px;height:48px;border-radius:50%;object-fit:cover}.bt-compose-body{flex:1;display:flex;flex-direction:column;gap:8px}.bt-compose-meta{font-weight:700;font-size:14px;color:var(--bt-muted)}.bt-compose-textarea{width:100%;border:1px solid var(--bt-border);border-radius:8px;padding:10px;font-size:16px;color:var(--bt-text);resize:vertical;min-height:80px;font-family:inherit;direction:rtl;transition:border-color .2s;box-sizing:border-box}.bt-compose-textarea:focus{outline:none;border-color:var(--bt-primary)}.bt-compose-footer{display:flex;align-items:center;justify-content:space-between}.bt-char-count{font-size:13px;color:var(--bt-muted)}.bt-char-count.bt-warn{color:#e0822d}.bt-char-count.bt-danger{color:#e53e3e}.bt-btn{padding:8px 20px;border-radius:999px;font-size:14px;font-weight:700;cursor:pointer;border:none;transition:background .2s,opacity .2s}.bt-btn--primary{background:var(--bt-primary);color:#fff}.bt-btn--primary:hover{background:var(--bt-primary-dark)}.bt-btn--primary:disabled{opacity:.6;cursor:not-allowed}.bt-compose-msg{font-size:13px;padding:8px 12px;border-radius:8px}.bt-compose-msg.success{background:#f0fff4;color:#276749}.bt-compose-msg.error{background:#fff5f5;color:#9b2c2c}.bt-card{display:flex;gap:12px;background:var(--bt-bg);border:1px solid var(--bt-border);border-radius:var(--bt-radius);padding:16px;margin-bottom:12px;box-shadow:var(--bt-shadow);transition:background .15s}.bt-card:hover{background:var(--bt-bg-hover)}.bt-card-avatar img{width:48px;height:48px;border-radius:50%;object-fit:cover}.bt-card-body{flex:1;display:flex;flex-direction:column;gap:8px;min-width:0}.bt-card-header{display:flex;align-items:center;justify-content:space-between}.bt-card-meta{display:flex;flex-direction:column;gap:2px}.bt-biz-name{font-weight:700;font-size:15px;color:var(--bt-text);text-decoration:none}.bt-biz-name:hover{text-decoration:underline;color:var(--bt-primary)}.bt-date{font-size:12px;color:var(--bt-muted);text-decoration:none}.bt-date:hover{text-decoration:underline}.bt-delete-btn{background:none;border:none;color:var(--bt-muted);cursor:pointer;font-size:14px;padding:4px 8px;border-radius:50%;transition:background .15s,color .15s;line-height:1}.bt-delete-btn:hover{background:#fee2e2;color:#e53e3e}.bt-card-content{font-size:15px;line-height:1.6;color:var(--bt-text);word-break:break-word;white-space:pre-wrap}.bt-card-actions{display:flex;gap:16px}.bt-permalink{font-size:13px;color:var(--bt-muted);text-decoration:none}.bt-permalink:hover{color:var(--bt-primary)}.bt-empty{text-align:center;color:var(--bt-muted);padding:40px 16px;font-size:15px}.bt-card.bt-new{animation:bt-slide-in .3s ease}@keyframes bt-slide-in{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}