:root{--primary:#1a73e8;--primary-dark:#185abc;--primary-bg:#e8f0fe;--ink:#202124;--gray:#5f6368;--border:#dadce0;--bg:#f8f9fa;--white:#fff;--green:#34a853;--green-bg:#e6f4ea;--red:#ea4335;--red-bg:#fce8e6;--amber:#f9ab00;--amber-bg:#fef7e0;--radius:14px;--radius-sm:10px;--shadow:0 1px 3px #3c40431f, 0 1px 2px #3c404314;--shadow-lg:0 4px 12px #3c404329;--font:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans TC", "PingFang HK", "Microsoft JhengHei", "Helvetica Neue", Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:var(--font);background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;font-size:15px;line-height:1.55}button{cursor:pointer;color:inherit;background:0 0;border:none;font-family:inherit}button:disabled{cursor:not-allowed;opacity:.55}input,textarea,select{color:var(--ink);font-family:inherit;font-size:14px}.app{height:100vh;display:flex;overflow:hidden}.sidebar{background:var(--white);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;width:232px;padding:18px 14px;display:flex}.sidebar-logo{color:var(--ink);align-items:center;gap:10px;padding:4px 8px 18px;font-size:20px;font-weight:700;display:flex}.sidebar-logo .logo-badge{background:var(--primary);color:#fff;border-radius:10px;justify-content:center;align-items:center;width:36px;height:36px;font-size:19px;display:flex}.nav-item{border-radius:var(--radius-sm);color:var(--gray);text-align:left;align-items:center;gap:12px;width:100%;margin-bottom:2px;padding:10px 12px;font-size:14.5px;font-weight:500;transition:background .15s,color 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12px;font-size:12.5px;font-weight:600}.lang-toggle button.active{background:var(--white);color:var(--primary);box-shadow:var(--shadow)}.user-chip{background:var(--bg);border:1px solid var(--border);border-radius:999px;align-items:center;gap:8px;padding:5px 12px 5px 5px;font-size:13px;font-weight:600;display:flex}.user-chip .avatar{background:var(--primary);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:26px;height:26px;font-size:12px;font-weight:700;display:flex}.content{flex:1;padding:26px 30px 40px;overflow-y:auto}.content-narrow{max-width:860px;margin:0 auto}.card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.pill{background:var(--primary-bg);color:var(--primary);border-radius:999px;align-items:center;gap:6px;padding:3px 11px;font-size:12px;font-weight:600;display:inline-flex}.pill.gray{background:var(--bg);color:var(--gray);border:1px solid var(--border)}.pill.green{background:var(--green-bg);color:var(--green)}.btn{background:var(--primary);color:#fff;border-radius:999px;justify-content:center;align-items:center;gap:7px;padding:10px 20px;font-size:14px;font-weight:600;transition:background .15s,transform 50ms;display:inline-flex}.btn:hover{background:var(--primary-dark)}.btn:active{transform:scale(.98)}.btn.secondary{background:var(--white);color:var(--primary);border:1px solid var(--primary)}.btn.secondary:hover{background:var(--primary-bg)}.btn.ghost{background:var(--white);color:var(--gray);border:1px solid var(--border)}.btn.ghost:hover{background:var(--bg)}.btn.green{background:var(--green)}.btn.green:hover{background:#2e9548}.btn.red{background:var(--red)}.btn.red:hover{background:#d33426}.btn.sm{padding:6px 14px;font-size:13px}.page-head{margin-bottom:20px}.page-head h1{margin-bottom:4px;font-size:24px;font-weight:700}.page-head p{color:var(--gray);font-size:14px}.progress-track{background:var(--border);border-radius:999px;height:8px;overflow:hidden}.progress-fill{background:var(--primary);border-radius:999px;height:100%;transition:width .4s}.empty-state{text-align:center;color:var(--gray);padding:50px 20px}.toast-wrap{z-index:100;flex-direction:column;gap:8px;display:flex;position:fixed;bottom:24px;left:50%;transform:translate(-50%)}.toast{background:var(--ink);color:#fff;box-shadow:var(--shadow-lg);border-radius:12px;align-items:center;gap:8px;padding:11px 20px;font-size:13.5px;font-weight:500;animation:.25s toast-in;display:flex}@keyframes toast-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.chat-shell{flex-direction:column;max-width:760px;height:calc(100vh - 124px);margin:0 auto;display:flex}.chat-window{flex-direction:column;flex:1;gap:14px;padding:22px 8px;display:flex;overflow-y:auto}.msg{gap:10px;max-width:86%;animation:.3s msg-in;display:flex}@keyframes msg-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.msg.bot{align-self:flex-start}.msg.user{flex-direction:row-reverse;align-self:flex-end}.msg-avatar{background:var(--primary-bg);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;font-size:17px;display:flex}.msg.user .msg-avatar{background:var(--primary);color:#fff;font-size:13px;font-weight:700}.msg-bubble{background:var(--white);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:14px;padding:11px 15px;font-size:14.5px;line-height:1.55}.msg.user .msg-bubble{background:var(--primary);color:#fff;border-color:var(--primary)}.msg-bubble .msg-label{color:var(--primary);margin-bottom:2px;font-size:11px;font-weight:700}.msg.user .msg-bubble .msg-label{color:#fffc}.typing-dots{gap:4px;padding:4px 2px;display:inline-flex}.typing-dots span{background:var(--gray);border-radius:50%;width:7px;height:7px;animation:1.2s infinite blink}.typing-dots span:nth-child(2){animation-delay:.2s}.typing-dots span:nth-child(3){animation-delay:.4s}@keyframes blink{0%,80%,to{opacity:.25}40%{opacity:1}}.chat-quick-replies{flex-wrap:wrap;gap:8px;margin-top:10px;display:flex}.chat-input-bar{background:var(--white);border-top:1px solid var(--border);align-items:center;gap:10px;padding:14px 10px;display:flex}.chat-input-bar input{border:1px solid var(--border);border-radius:999px;outline:none;flex:1;padding:11px 18px;font-size:14.5px}.chat-input-bar input:focus{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-bg)}.send-btn{background:var(--primary);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:44px;height:44px;font-size:18px;transition:background .15s;display:flex}.send-btn:hover{background:var(--primary-dark)}.chat-header{background:var(--white);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:14px 22px;display:flex}.dna-build-status{color:var(--gray);align-items:center;gap:12px;font-size:13px;display:flex}.dna-build-status .progress-track{width:130px}.vault-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px;display:grid}.vault-card{flex-direction:column;gap:8px;padding:16px 18px;display:flex}.vault-card-head{align-items:center;gap:10px;display:flex}.vault-card-head .vc-icon{background:var(--primary-bg);border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:38px;height:38px;font-size:19px;display:flex}.vault-card-head h3{font-size:15.5px;font-weight:700}.vault-card-head .vc-sub{color:var(--gray);font-size:11.5px}.vault-card p{color:var(--gray);font-size:13px;line-height:1.5}.vault-card .vc-tags{flex-wrap:wrap;gap:5px;margin-top:2px;display:flex}.vault-card .vc-foot{justify-content:space-between;align-items:center;margin-top:4px;display:flex}.vault-card textarea{border:1px solid 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13px;font-size:13px;line-height:1.5}.approval-actions{flex-wrap:wrap;gap:8px;margin-top:10px;display:flex}.ask-hero{border-radius:var(--radius);text-align:center;background:linear-gradient(135deg,#e8f0fe 0%,#f3f8ff 100%);border:1px solid #d2e3fc;margin-bottom:20px;padding:26px 28px}.ask-hero h2{margin-bottom:6px;font-size:20px;font-weight:700}.ask-hero p{color:var(--gray);max-width:520px;margin:0 auto 16px;font-size:14px}.ask-search{background:var(--white);border:1px solid var(--border);max-width:560px;box-shadow:var(--shadow);border-radius:999px;gap:8px;margin:0 auto;padding:5px 5px 5px 18px;display:flex}.ask-search input{background:0 0;border:none;outline:none;flex:1;font-size:14.5px}.ask-suggest{flex-wrap:wrap;justify-content:center;gap:7px;margin-top:14px;display:flex}.ask-suggest .pill{white-space:normal;text-align:left;max-width:100%}.ask-answer{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);margin-top:18px;padding:18px 22px;animation:.3s msg-in}.ask-answer h4{color:var(--primary);align-items:center;gap:8px;margin-bottom:8px;font-size:14px;display:flex}.ask-answer .answer-text{font-size:14.5px;line-height:1.65}.ask-cite{background:var(--primary-bg);color:var(--primary);border-radius:8px;align-items:center;gap:5px;margin:6px 6px 0 0;padding:3px 9px;font-size:12px;font-weight:600;display:inline-flex}.ask-thinking{color:var(--gray);align-items:center;gap:8px;margin-top:14px;font-size:13px;display:flex}.section-label{color:var(--gray);text-transform:uppercase;letter-spacing:.5px;margin:26px 0 10px;font-size:12px;font-weight:700}.divider{border:none;border-top:1px solid var(--border);margin:18px 0}.hero-band{border-radius:var(--radius);color:#fff;box-shadow:var(--shadow-lg);background:linear-gradient(135deg,#1a73e8 0%,#4285f4 100%);justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px;padding:28px 30px;display:flex}.hero-band h1{margin-bottom:5px;font-size:23px;font-weight:700}.hero-band p{opacity:.92;max-width:560px;font-size:14px}.hero-band .hero-emoji{font-size:46px}.stat-row{flex-wrap:wrap;gap:14px;display:flex}.stat-box{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);flex:1;min-width:150px;padding:14px 18px}.stat-box .stat-num{color:var(--primary);font-size:24px;font-weight:700}.stat-box .stat-label{color:var(--gray);font-size:12.5px}