.serial-intro{align-items:center}.serial-intro .description{max-width:790px}.connection-badge{flex:none;display:inline-flex;align-items:center;gap:7px;border:1px solid #d9e3ef;border-radius:999px;padding:8px 13px;background:#f8fafc;color:#697a8e;font-size:13px;font-weight:700}.connection-badge[data-state="on"]{border-color:#9cdec8;background:#e9faf4;color:#087957}.connection-badge[data-state="busy"]{border-color:#f1d597;background:#fff7e6;color:#98620a}.notice{padding:14px 17px;border:1px solid #f0dcb1;border-radius:12px;background:#fff9ed;color:#7c5a1e;font-size:14px;line-height:1.65;margin:0 0 18px}.notice.warning{background:#fff0f1;border-color:#f4bac2;color:#9f2340}.serial-layout{display:grid;grid-template-columns:minmax(320px,390px) minmax(0,1fr);gap:18px;align-items:start}.panel-title{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:22px}.panel-title h2{margin:6px 0 0}.panel-title.compact{margin-bottom:16px}.section-kicker{font-size:11px;letter-spacing:.16em;font-weight:800;color:#4180d3}.port-label{font-size:12px;color:#667a91;max-width:170px;text-align:right;overflow-wrap:anywhere}.setting-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.setting-grid label:first-child{grid-column:1/-1}.setting-grid input,.setting-grid select{width:100%;min-width:0}.connection-actions{margin-top:17px}.setting-divider{height:1px;background:#e3eaf2;margin:25px 0}.unlock-check{font-weight:650;padding:11px;border:1px solid #d8e2ed;border-radius:10px;background:#f7f9fc}.send-options{margin:16px 0}.send-options label:first-child{grid-column:auto}#send-input{display:block;width:100%;margin-top:7px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:13px}.send-actions{justify-content:space-between;align-items:center;margin-top:12px}.send-actions label{font-size:12px}.monitor-panel{min-width:0}.session-stats{display:flex;gap:17px;flex-wrap:wrap;font-size:12px;color:#6b7e93}.session-stats strong{color:#1d3954;font-size:13px}.monitor-toolbar{display:flex;align-items:end;gap:17px;flex-wrap:wrap;margin-bottom:12px}.monitor-toolbar label:not(.check){min-width:155px}.monitor-toolbar select{width:100%}.monitor-toolbar .check{min-height:43px}.buffer-info{margin-left:auto;color:#72849a;font-size:12px;padding-bottom:12px}.terminal{margin:0;background:#0d1d2f;color:#daf0ff;border:1px solid #244465;border-radius:13px;min-height:450px;height:min(60vh,690px);overflow:auto;padding:17px;font:13px/1.65 ui-monospace,SFMono-Regular,Consolas,"Microsoft YaHei",monospace;white-space:pre-wrap;overflow-wrap:anywhere;tab-size:4}.monitor-actions{margin-top:14px}.monitor-actions button{font-size:13px}.footer{line-height:1.6}@media(max-width:900px){.serial-layout{grid-template-columns:1fr}.terminal{min-height:320px;height:48vh}}@media(max-width:600px){.serial-intro{align-items:flex-start}.serial-intro .connection-badge{margin-top:4px}.setting-grid{gap:10px}.panel-title{align-items:flex-start;flex-wrap:wrap}.session-stats{width:100%}.monitor-toolbar{align-items:center}.buffer-info{width:100%;margin-left:0;padding:0}.terminal{padding:12px;min-height:280px;height:45vh}.monitor-actions button{flex:1}.send-actions{align-items:flex-start}.send-actions label{flex:1}}