.bt-btn{border:1px solid var(--field-line);background:var(--surface);min-height:44px;color:var(--text);font:inherit;cursor:pointer;border-radius:14px;flex:none;justify-content:center;align-items:center;padding:0 16px;font-size:14px;font-weight:800;text-decoration:none;display:inline-flex}.bt-btn.mint{background:var(--mint);color:var(--on-mint);border:0}.bt-btn.sm{border-radius:12px;min-height:36px;padding:0 14px;font-size:13px}.bt-btn:disabled{opacity:.5;cursor:default}.bt-quota{color:var(--text-muted);white-space:nowrap;flex:none;font-size:12.5px;font-weight:700}.bt-quota b{color:var(--mint-ink);font-family:Mirae;font-weight:400}.bt-dhead{justify-content:space-between;align-items:flex-start;gap:10px;display:flex}.bt-dhead>span{flex-direction:column;gap:5px;min-width:0;display:flex}.bt-dhead h2{margin:0}.bt-lead{color:var(--text-muted);margin:0;font-size:13.5px;line-height:1.5}.bt-sec{color:var(--text-muted);margin-bottom:-6px;font-size:13px;font-weight:800}.bt-topic{flex-direction:column;gap:6px;display:flex}.bt-topic .cap{color:var(--text-muted);justify-content:space-between;font-size:13px;font-weight:800;display:flex}.bt-topic .cap i{font-family:Mirae;font-style:normal;font-weight:400}.bt-topic input{border:1px solid var(--field-line);background:var(--surface);height:48px;font:inherit;color:var(--text);border-radius:14px;outline:none;padding:0 14px;font-size:15px;font-weight:600}.bt-topic input:focus{border-color:var(--mint-ink)}.bt-topic .err{color:var(--danger,#e5484d);font-size:12.5px;font-weight:700}.bt-out{background:var(--surface-sub,var(--track));text-align:center;border-radius:18px;flex-direction:column;align-items:stretch;gap:10px;padding:16px;display:flex}.bt-out b{font-size:16px;font-weight:800}.bt-out span{color:var(--text-muted);font-size:13.5px;line-height:1.5}.bt-wrap{flex-direction:column;min-height:100vh;display:flex}.bt-refresh{border:1px solid var(--border);background:var(--surface);width:40px;height:40px;color:var(--text);cursor:pointer;border-radius:20px;justify-content:center;align-items:center;padding:0;display:flex}.bt-empty{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:12px;padding:40px 24px;display:flex}.bt-feed{padding:8px 16px calc(110px + env(safe-area-inset-bottom,0px));flex-direction:column;flex:1;gap:16px;display:flex}.bt-intro{text-align:center;border-bottom:1px solid var(--border);flex-direction:column;align-items:center;gap:6px;padding:8px 12px 12px;display:flex}.bt-intro .avw{width:56px;height:56px;display:block}.bt-intro .avw>.av{border-radius:18px;width:56px;height:56px}.bt-intro b{font-size:17px;font-weight:800}.bt-intro small{color:var(--text-muted);font-size:12.5px}.bt-msg{flex-direction:column;align-items:flex-start;gap:6px;max-width:86%;display:flex}.bt-msg.mine{align-self:flex-end;align-items:flex-end}.bt-msg .no{color:var(--text-muted);padding:0 6px;font-family:Mirae;font-size:12px}.bt-msg .bub{background:var(--surface);border:1px solid var(--border);border-radius:6px 20px 20px;align-items:center;gap:8px;max-width:100%;padding:8px 10px 8px 8px;display:flex}.bt-msg.mine .bub{background:color-mix(in srgb, var(--mint) 18%, var(--surface));border-color:#0000;border-radius:20px 6px 20px 20px}.bt-msg .music{min-width:0;font:inherit;color:inherit;text-align:left;cursor:pointer;background:0 0;border:0;align-items:center;gap:10px;padding:0;display:flex}.bt-msg .art{border-radius:10px;flex:none;width:56px;height:56px;display:flex;overflow:hidden}.bt-msg .art.round{border-radius:28px}.bt-msg .tx{flex-direction:column;gap:2px;min-width:0;display:flex}.bt-msg .tx b{text-overflow:ellipsis;white-space:nowrap;font-size:15px;font-weight:800;overflow:hidden}.bt-msg .tx small{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;font-size:12.5px;overflow:hidden}.bt-msg .rx{flex-wrap:wrap;gap:4px;display:flex}.bt-msg .rx button{border:1px solid var(--border);background:var(--surface);min-width:36px;height:32px;font:inherit;cursor:pointer;border-radius:16px;justify-content:center;align-items:center;padding:0 8px;font-size:15px;display:flex}.bt-msg .rx button.on{border-color:var(--mint-ink);background:color-mix(in srgb, var(--mint) 18%, var(--surface))}.bt-msg .rx button.reply{color:var(--text-muted);font-size:12.5px;font-weight:800}.bt-msg .rx button.reply.on{color:inherit;font-size:15px}.bt-msg .rx.theirs span{background:var(--surface-sub,var(--track));border-radius:14px;justify-content:center;align-items:center;min-width:28px;height:28px;padding:0 6px;font-size:14px;display:flex}.bt-msg .rx.theirs .reply{letter-spacing:1px}.bt-bar{z-index:30;max-width:520px;padding:12px 16px calc(12px + env(safe-area-inset-bottom,0px));background:var(--bg);border-top:1px solid var(--border);align-items:center;gap:10px;margin:0 auto;display:flex;position:fixed;bottom:0;left:0;right:0}.bt-bar .msg{flex-wrap:wrap;flex:1;align-items:center;gap:6px;min-width:0;font-size:13.5px;font-weight:700;line-height:1.4;display:flex}.bt-bar .msg.wait{color:var(--text-muted);text-align:center;justify-content:center;min-height:44px}.bt-list{flex-direction:column;gap:8px;display:flex}.bt-listhead{color:var(--text-muted);justify-content:space-between;align-items:center;gap:10px;padding:0 2px;font-size:12.5px;display:flex}.bt-h{margin:10px 2px 0;font-size:14px;font-weight:800}.bt-row{background:var(--surface);border:1px solid var(--border);border-radius:18px;align-items:center;gap:8px;padding:10px 12px;display:flex}.bt-row.new{border-color:var(--mint-ink)}.bt-row .go{min-width:0;color:inherit;flex:1;align-items:center;gap:12px;text-decoration:none;display:flex}.bt-row .avw{flex:none;width:44px;height:44px;display:block}.bt-row .avw>.av{border-radius:14px;width:44px;height:44px}.bt-row .tx{flex-direction:column;flex:1;gap:1px;min-width:0;display:flex}.bt-row .tx b{align-items:center;gap:6px;font-size:15px;font-weight:800;display:flex}.bt-row .tx small{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;font-size:12.5px;overflow:hidden}.bt-row .tx .st em{color:var(--mint-ink);font-style:normal;font-weight:800}.bt-row .dot{background:var(--magenta,#ff3dd2);border-radius:4px;width:7px;height:7px;display:inline-block}.bt-row .cv{background:var(--track);border-radius:8px;flex:none;width:40px;height:40px;overflow:hidden}.bt-row .cv.round{border-radius:20px}.bt-row .cv img{object-fit:cover;width:100%;height:100%;display:block}.bt-skel{flex-direction:column;gap:8px;display:flex}.bt-skel span{background:var(--skel,var(--track));border-radius:18px;height:66px}.bt-card{flex-direction:column;gap:10px;display:flex}.bt-card p{color:var(--text-muted);margin:0;font-size:13px;line-height:1.5}