:root{--bg:#0d0e12;--bg-2:#14161c;--bg-3:#1a1d25;--panel:#16181f;--border:#262a34;--border-2:#313644;--text:#e6e8ee;--text-dim:#9aa0ad;--text-faint:#6b7180;--accent:#7c6cff;--accent-2:#5b8cff;--green:#3fb950;--amber:#d9a441;--red:#f0553f;--shadow:0 8px 30px #00000073;--mono:"SF Mono", "JetBrains Mono", "Fira Code", ui-monospace, Menlo, monospace;--sans:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif}*{box-sizing:border-box}html,body{background:var(--bg);height:100%;color:var(--text);font-family:var(--sans);-webkit-font-smoothing:antialiased;margin:0;padding:0;font-size:14px}button{cursor:pointer;font-family:inherit}.app{grid-template-columns:1fr 460px;height:100vh;display:grid;overflow:hidden}@media (max-width:900px){.app{grid-template-rows:45vh 55vh;grid-template-columns:1fr}}.pane{flex-direction:column;min-width:0;min-height:0;display:flex}.pane-left{background:radial-gradient(120% 100% at 50% 0,#14151c 0%,#0b0c10 100%)}.pane-right{background:var(--panel);border-left:1px solid var(--border)}.pane-head{border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;min-height:54px;padding:12px 16px;display:flex}.brand{align-items:center;gap:9px;display:flex}.brand-dot{background:conic-gradient(from 180deg, var(--accent), var(--accent-2), var(--accent));border-radius:50%;width:12px;height:12px;box-shadow:0 0 12px #7c6cffb3}.brand-name{letter-spacing:.2px;font-weight:650}.brand-sub{color:var(--text-faint);font-size:12px;font-family:var(--mono)}.preview-tools{align-items:center;gap:8px;display:flex}.res-badge{font-family:var(--mono);color:var(--text-dim);background:var(--bg-3);border:1px solid var(--border);border-radius:6px;padding:3px 8px;font-size:11px}.icon-btn{background:var(--bg-3);border:1px solid var(--border);width:30px;height:30px;color:var(--text-dim);border-radius:7px;font-size:15px;transition:all .15s}.icon-btn:hover{color:var(--text);border-color:var(--border-2);background:var(--bg-2)}.preview-stage{flex:1;justify-content:center;align-items:center;min-height:0;padding:24px;display:flex;overflow:hidden}.phone{aspect-ratio:720/1280;border:1px solid var(--border-2);max-width:100%;height:min(100%,88vh);box-shadow:var(--shadow), inset 0 0 0 6px #05060a;background:#000;border-radius:22px;position:relative;overflow:hidden}.phone iframe{background:#1a1a2e;border:0;width:100%;height:100%;display:block}.phone-empty{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:6px;padding:30px;display:flex;position:absolute;inset:0}.phone-empty-icon{opacity:.7;font-size:44px}.phone-empty-title{margin:6px 0 0;font-weight:600}.phone-empty-hint{color:var(--text-faint);max-width:240px;font-size:13px;line-height:1.5}.agent-title{flex-direction:column;gap:1px;display:flex}.agent-title-main{font-weight:650}.agent-title-sub{color:var(--text-faint);font-size:11px;font-family:var(--mono)}.conversation{scroll-behavior:smooth;flex-direction:column;flex:1;gap:14px;min-height:0;padding:18px 16px 8px;display:flex;overflow:hidden auto}.conversation>*{flex-shrink:0}.conversation,.step-log{scrollbar-width:none;-ms-overflow-style:none}.conversation::-webkit-scrollbar{width:0;height:0;display:none}.step-log::-webkit-scrollbar{width:0;height:0;display:none}.spinner{border:2px solid #7c6cff40;border-top-color:var(--accent);border-radius:50%;flex-shrink:0;width:13px;height:13px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.msg-assistant{gap:10px;display:flex}.msg-assistant .msg-avatar{background:linear-gradient(135deg, var(--accent), var(--accent-2));color:#fff;border-radius:7px;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;margin-top:1px;font-size:12px;display:flex}.msg-assistant .msg-body{flex:1;min-width:0;font-size:13.5px;line-height:1.65}.msg-assistant .msg-body p{margin:0 0 8px}.msg-assistant .msg-body p:last-child{margin-bottom:0}.msg-hint{color:var(--text-faint);font-size:12.5px}.msg-body code{font-family:var(--mono);background:var(--bg-3);border:1px solid var(--border);border-radius:5px;padding:1px 6px;font-size:12px}.msg-body a{color:var(--accent-2)}.msg-user{background:var(--bg-3);border:1px solid var(--border-2);white-space:pre-wrap;word-break:break-word;border-radius:12px 12px 4px;align-self:flex-end;max-width:84%;padding:9px 13px;font-size:13.5px;line-height:1.55}.step{border:1px solid var(--border);background:var(--bg-2);border-radius:10px;transition:border-color .2s;overflow:hidden}.step.running{border-color:var(--border-2)}.step-head{cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;gap:9px;padding:9px 11px;display:flex}.step-head:hover{background:#ffffff05}.step-icon{background:var(--bg-3);border:1px solid var(--border);border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:22px;height:22px;font-size:13px;display:flex}.step-label{flex-shrink:0;font-size:12.5px;font-weight:600}.step-summary{min-width:0;color:var(--text-faint);white-space:nowrap;text-overflow:ellipsis;flex:1;font-size:12px;overflow:hidden}.step-state{flex-shrink:0;align-items:center;display:flex}.step-check{color:var(--green);font-size:13px}.step-x{color:var(--red);font-size:13px}.step-chevron{color:var(--text-faint);flex-shrink:0;font-size:12px;transition:transform .15s}.step.open .step-chevron{transform:rotate(90deg)}.step-log{border-top:1px solid var(--border);font-family:var(--mono);color:var(--text-dim);white-space:pre-wrap;word-break:break-word;background:#0b0c10;max-height:220px;padding:10px 12px;font-size:11.5px;line-height:1.55;overflow-y:auto}.composer{border-top:1px solid var(--border);flex-shrink:0;padding:12px 14px 14px}.composer-box{background:var(--bg-3);border:1px solid var(--border);border-radius:13px;padding:11px 13px 48px;transition:border .15s,box-shadow .15s;position:relative}.composer-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px #7c6cff1f}.composer textarea{resize:none;width:100%;color:var(--text);scrollbar-width:none;-ms-overflow-style:none;background:0 0;border:0;outline:none;max-height:160px;padding:0;font-family:inherit;font-size:13.5px;line-height:1.55;display:block}.composer textarea::-webkit-scrollbar{width:0;height:0;display:none}.composer textarea::placeholder{color:var(--text-faint)}.send-btn{background:linear-gradient(135deg, var(--accent), var(--accent-2));color:#fff;white-space:nowrap;border:0;border-radius:9px;padding:7px 15px;font-size:12.5px;font-weight:600;transition:all .15s;position:absolute;bottom:9px;right:9px}.send-btn:hover{filter:brightness(1.08)}.send-btn:disabled{opacity:.45;cursor:not-allowed;filter:none}.err-line{color:var(--red);font-family:var(--mono);font-size:12px}