:root{--bg: #f6f5f1;--panel: #ffffff;--panel-soft: #fbfaf7;--ink: #22262e;--ink-soft: #4b5162;--muted: #8a8f9c;--line: #e3e0d6;--accent: #34507d;--accent-soft: #edf1f7;--accent-border: #c9d4e4;--ok: #3d7a4f;--ok-soft: #eef5f0;--ok-border: #cfe3d6;--warn-bg: #fdf3d7;--warn-border: #e6c96a;--warn-ink: #6a5312;--danger-ink: #a3413a;--danger-bg: #faeceb;--danger-border: #eccfcb;--radius: 10px;--shadow: 0 1px 2px rgba(34, 38, 46, .06);--font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;--font-serif: "Songti SC", "STSong", "Noto Serif SC", Georgia, serif}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-sans);font-size:15px;line-height:1.7;-webkit-font-smoothing:antialiased}h1,h2,h3,h4{margin:0;font-weight:600}button{font-family:inherit}#root{display:flex;flex-direction:column}.health-banner{display:flex;align-items:center;gap:12px;padding:8px 16px;background:var(--warn-bg);border-bottom:1px solid var(--warn-border);color:var(--warn-ink);font-size:13px}.health-retry{margin-left:auto;border:1px solid var(--warn-border);background:transparent;color:var(--warn-ink);border-radius:6px;padding:2px 10px;font-size:12px;cursor:pointer}.health-retry:hover{background:#e6c96a40}.enter-page{flex:1;display:flex;align-items:center;justify-content:center;padding:24px}.enter-card{width:100%;max-width:420px;background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:40px 34px 26px}.enter-title{font-family:var(--font-serif);font-size:24px;letter-spacing:6px;text-align:center}.enter-sub{text-align:center;color:var(--muted);font-size:13px;margin:8px 0 26px}.enter-form{display:flex;flex-direction:column;gap:12px}.enter-input{border:1px solid var(--line);border-radius:10px;padding:11px 14px;font:inherit;text-align:center;letter-spacing:2px;background:#fff;color:var(--ink)}.enter-input:focus{outline:none;border-color:var(--accent-border);box-shadow:0 0 0 3px var(--accent-soft)}.enter-submit{border:none;background:var(--accent);color:#fff;border-radius:10px;padding:11px;font-size:15px;letter-spacing:4px;cursor:pointer}.enter-submit:disabled{opacity:.55;cursor:default}.enter-error{margin:0;padding:8px 10px;border:1px solid var(--danger-border);background:var(--danger-bg);color:var(--danger-ink);border-radius:8px;font-size:13px;text-align:center}.enter-note{margin:20px 0 0;text-align:center;font-size:12px;color:var(--muted);line-height:1.7}.chat-layout{flex:1;min-height:0;display:grid;grid-template-columns:236px minmax(0,1fr) 312px}.chat-left{display:flex;flex-direction:column;gap:18px;padding:20px 16px;background:var(--panel-soft);border-right:1px solid var(--line);overflow-y:auto}.chat-main{display:flex;flex-direction:column;min-width:0;min-height:0}.chat-right{padding:20px 16px;background:var(--panel-soft);border-left:1px solid var(--line);overflow-y:auto}.brand{font-family:var(--font-serif);font-size:20px;letter-spacing:3px}.brand-sub{margin-top:2px;font-size:12px;color:var(--muted)}.mode-switch{display:grid;grid-template-columns:1fr 1fr;gap:6px;background:#efede6;padding:4px;border-radius:10px}.mode-btn{border:none;background:transparent;border-radius:8px;padding:8px 6px;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:1px;color:var(--ink-soft)}.mode-btn-active{background:var(--panel);color:var(--accent);box-shadow:var(--shadow)}.mode-label{font-size:14px;font-weight:600}.mode-hint{font-size:11px;color:var(--muted)}.mock-tag{align-self:flex-start;font-size:11px;color:var(--warn-ink);background:var(--warn-bg);border:1px solid var(--warn-border);border-radius:999px;padding:1px 10px}.side-note{margin-top:auto;border-top:1px dashed var(--line);padding-top:12px;font-size:12px;color:var(--muted);line-height:1.7}.reset-btn{border:1px solid var(--line);background:var(--panel);color:var(--ink-soft);border-radius:8px;padding:6px 10px;font-size:12px;cursor:pointer}.reset-btn:hover{border-color:var(--accent-border);color:var(--accent)}.stage-progress{min-width:0}.stage-title{font-size:12px;color:var(--muted);margin-bottom:8px}.stage-list{list-style:none;margin:0;padding:0}.stage-item{display:flex;align-items:center;gap:10px;padding:7px 0;position:relative}.stage-item+.stage-item:before{content:"";position:absolute;left:5px;top:-7px;height:14px;border-left:1px dashed var(--line)}.stage-dot{width:10px;height:10px;border-radius:50%;border:2px solid var(--line);background:#fff;flex:none}.stage-label{font-size:13px;color:var(--ink-soft)}.stage-done .stage-dot{background:var(--accent);border-color:var(--accent)}.stage-done .stage-label{color:var(--accent)}.stage-current .stage-dot{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.stage-current .stage-label{color:var(--accent);font-weight:600}.chat-scroll{flex:1;min-height:0;overflow-y:auto;padding:24px 28px}.welcome{max-width:640px;margin:8px auto 0;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;color:var(--ink-soft);font-size:14px}.msg-row{display:flex;margin-bottom:16px}.msg-user{justify-content:flex-end}.msg-assistant{justify-content:flex-start}.msg-bubble{max-width:min(640px,86%);border-radius:12px;padding:10px 14px}.msg-user .msg-bubble{background:var(--accent);color:#fff;border-bottom-right-radius:4px}.msg-assistant .msg-bubble{background:var(--panel);border:1px solid var(--line);border-bottom-left-radius:4px;box-shadow:var(--shadow)}.msg-text{margin:0;white-space:pre-wrap;word-break:break-word}.msg-extras{display:flex;align-items:center;gap:10px;margin-top:10px}.badge{display:inline-block;font-size:11px;letter-spacing:1px;color:var(--accent);background:var(--accent-soft);border:1px solid var(--accent-border);border-radius:999px;padding:1px 10px}.badge-stage{color:var(--ok);background:var(--ok-soft);border-color:var(--ok-border)}.link-btn{border:none;background:none;padding:0;color:var(--muted);font-size:12px;cursor:pointer}.link-btn:hover{color:var(--accent);text-decoration:underline}.spec-panel{margin-top:10px;background:#fafaf6;border:1px dashed var(--line);border-radius:8px;padding:10px 12px;font-size:12.5px;color:var(--ink-soft)}.spec-panel p{margin:0 0 6px}.spec-panel ul{margin:0;padding-left:18px}.spec-panel li{margin:2px 0}.typing{color:var(--muted);font-size:13px;margin-bottom:16px}.chat-error{margin:0 0 16px;padding:8px 12px;border:1px solid var(--warn-border);background:var(--warn-bg);color:var(--warn-ink);border-radius:8px;font-size:13px}.composer{border-top:1px solid var(--line);background:var(--panel);padding:14px 20px;display:flex;flex-direction:column;gap:8px}.composer-box{display:flex;align-items:flex-end;gap:10px}.composer textarea{flex:1;resize:none;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font:inherit;line-height:1.6;min-height:44px;max-height:160px;background:#fff;color:var(--ink)}.composer textarea:focus{outline:none;border-color:var(--accent-border);box-shadow:0 0 0 3px var(--accent-soft)}.composer textarea:disabled{background:var(--panel-soft)}.composer-send{border:none;background:var(--accent);color:#fff;border-radius:10px;padding:10px 22px;font-size:14px;cursor:pointer}.composer-send:disabled{opacity:.5;cursor:default}.composer-hint{font-size:11.5px;color:var(--muted)}.kcard-title{font-family:var(--font-serif);font-size:16px;letter-spacing:2px}.kcard-count{font-size:12px;color:var(--muted);margin:2px 0 14px;min-height:18px}.kcard{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:14px;margin-bottom:14px}.kcard-subject{font-size:14.5px;padding-bottom:8px;margin-bottom:8px;border-bottom:1px solid var(--line)}.kcard-section{margin-bottom:8px}.kcard-section:last-child{margin-bottom:0}.kcard-section h4{font-size:11.5px;letter-spacing:2px;color:var(--muted);margin-bottom:4px}.kcard-section ul{margin:0;padding-left:16px;font-size:12.5px;color:var(--ink-soft)}.kcard-section li{margin:2px 0}.kcard-next{margin:0;font-size:12.5px;color:var(--ink-soft)}.kcard-empty{margin:0;font-size:12.5px;color:var(--muted)}.side-empty{margin-top:40px;text-align:center;font-size:13px;color:var(--muted);line-height:1.9}@media (max-width: 1080px){.chat-layout{grid-template-columns:200px minmax(0,1fr) 260px}}@media (max-width: 860px){.chat-layout{grid-template-columns:1fr;grid-template-rows:auto minmax(0,1fr)}.chat-left{flex-direction:row;align-items:center;gap:14px;padding:10px 14px;border-right:none;border-bottom:1px solid var(--line);overflow-x:auto}.brand-sub,.side-note,.mock-tag{display:none}.mode-switch{width:216px;flex:none}.stage-progress{flex:none}.stage-title{display:none}.stage-list{flex-direction:row;gap:14px}.stage-item{padding:2px 0}.stage-item+.stage-item:before{display:none}.reset-btn{margin-left:auto;flex:none}.chat-right{display:none}.chat-scroll{padding:16px}}