:root{--bg: #0f1117;--panel: #171a23;--panel2: #1d212c;--user: #2563eb;--assistant: #21262f;--text: #e7e9ee;--muted: #8b93a7;--accent: #38bdf8;--border: #2a2f3a}*{box-sizing:border-box}body{margin:0;font-family:system-ui,Segoe UI,Hiragino Kaku Gothic ProN,Meiryo,sans-serif;background:var(--bg);color:var(--text);line-height:1.7}.layout{display:flex;height:100dvh}.sidebar{width:240px;flex-shrink:0;background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:18px 12px}.brand{padding:4px 10px 18px}.brand-title{font-size:1.3rem;font-weight:700;letter-spacing:.02em}.brand-sub{font-size:.72rem;color:var(--muted);margin-top:2px}.sidebar nav{display:flex;flex-direction:column;gap:4px;flex:1}.sidebar nav button{display:flex;align-items:center;gap:10px;background:transparent;color:var(--text);border:none;text-align:left;padding:10px 12px;border-radius:8px;cursor:pointer;font-size:.9rem}.sidebar nav button:hover{background:var(--panel2)}.sidebar nav button.active{background:var(--accent);color:#04222e;font-weight:600}.nav-icon{font-size:1rem}.sidebar-foot{padding:10px;border-top:1px solid var(--border)}.sidebar-foot a{color:var(--accent);text-decoration:none;font-size:.85rem}.content{flex:1;overflow-y:auto}.chat{max-width:820px;margin:0 auto;height:100%;display:flex;flex-direction:column;padding:20px}.kb-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 12px;margin-bottom:8px;background:var(--panel);border:1px solid var(--border);border-radius:10px;font-size:.85rem}.kb-bar label{color:var(--muted)}.kb-bar select{background:var(--panel2);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:6px 10px;font-size:.85rem;cursor:pointer}.kb-bar select:focus{outline:none;border-color:var(--accent)}.kb-desc{color:var(--muted);font-size:.78rem}.messages{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:12px;padding:8px 0}.empty{color:var(--muted);text-align:center;margin-top:12%}.suggestions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:12px}.suggestions button{background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:999px;padding:8px 14px;cursor:pointer;font-size:.85rem}.suggestions button:hover{border-color:var(--accent)}.bubble{max-width:85%;padding:10px 14px;border-radius:14px}.bubble.user{align-self:flex-end;background:var(--user)}.bubble.assistant{align-self:flex-start;background:var(--assistant)}.text{white-space:pre-wrap;word-break:break-word}.citations{margin-top:8px;display:flex;flex-wrap:wrap;gap:6px}.cite{font-size:.72rem;color:var(--accent);background:#0d1b2a;padding:2px 8px;border-radius:6px}.cite-link{cursor:pointer}.cite-link:hover{background:#123}.cite-wrap{display:inline-block}.cite-score{color:var(--muted)}.cite-detail{margin-top:6px;background:#0b1420;border:1px solid #1d3b53;border-radius:8px;padding:10px 12px;max-width:640px}.cite-detail-head{display:flex;align-items:center;gap:10px;margin-bottom:6px;flex-wrap:wrap}.cite-heading{font-size:.74rem;color:var(--muted)}.cite-open{font-size:.72rem;color:var(--accent);background:transparent;border:1px solid #1d3b53;border-radius:6px;padding:2px 8px;cursor:pointer}.cite-open:hover{background:#123}.cite-quote{font-size:.8rem;line-height:1.6;color:#c3c9d6;white-space:pre-wrap;word-break:break-word;border-left:3px solid var(--accent);padding-left:10px}.admin-create,.admin-select{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0 4px}.admin-create input{flex:1;min-width:160px;background:var(--panel2);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 10px;font-size:.85rem}.admin-create button,.admin-select button{background:var(--accent);color:#04222e;border:none;border-radius:8px;padding:8px 16px;font-weight:600;cursor:pointer}.admin-select select{flex:1;min-width:200px;background:var(--panel2);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 10px}button.danger{background:#b91c3c;color:#fff}button.small{padding:4px 10px;font-size:.78rem}.dropzone{display:block;border:2px dashed var(--border);border-radius:10px;padding:22px;text-align:center;color:var(--muted);cursor:pointer;margin:8px 0}.dropzone:hover{border-color:var(--accent)}.dropzone.disabled{opacity:.5;cursor:not-allowed}.dropzone input{display:none}.file-list{list-style:none;padding:0;margin:8px 0}.file-list li{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;border:1px solid var(--border);border-radius:8px;margin-bottom:6px;background:var(--panel)}.composer{display:flex;gap:8px;padding-top:12px}.composer input{flex:1;background:var(--panel);border:1px solid var(--border);color:var(--text);border-radius:10px;padding:12px 14px;font-size:.95rem}.composer input:focus{outline:none;border-color:var(--accent)}.composer button{background:var(--accent);color:#04222e;border:none;border-radius:10px;padding:0 20px;font-weight:600;cursor:pointer}.composer button:disabled{opacity:.5;cursor:not-allowed}.doc{max-width:860px;margin:0 auto;padding:32px 28px 64px}.doc h2{font-size:1.6rem;margin:0 0 8px}.doc h3{font-size:1.15rem;margin:32px 0 12px;border-left:3px solid var(--accent);padding-left:10px}.doc h4{margin:0 0 6px;font-size:.98rem}.doc .lead{color:#c3c9d6;margin:0 0 8px}.doc strong{color:#fff}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:14px 16px}.card h4{color:var(--accent)}.card p{margin:0;font-size:.86rem;color:#c3c9d6}.tech{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}.tech-group{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:14px 16px}.tech-group h4{color:var(--accent)}.tech-group ul{list-style:none;margin:0;padding:0}.tech-group li{display:flex;flex-direction:column;padding:6px 0;border-top:1px solid var(--border)}.tech-group li:first-child{border-top:none}.tech-name{font-size:.88rem;font-weight:600}.tech-note{font-size:.76rem;color:var(--muted)}.steps{list-style:none;margin:16px 0;padding:0}.steps li{display:flex;gap:14px;align-items:flex-start;padding:10px 0;position:relative}.steps li:before{content:"";position:absolute;left:15px;top:36px;bottom:-10px;width:2px;background:var(--border)}.steps li:last-child:before{display:none}.step-n{flex-shrink:0;width:32px;height:32px;border-radius:50%;background:var(--accent);color:#04222e;font-weight:700;display:flex;align-items:center;justify-content:center;z-index:1}.step-label{font-weight:600}.step-detail{font-size:.84rem;color:var(--muted)}.note{background:#122231;border:1px solid #1d3b53;border-radius:8px;padding:10px 14px;font-size:.85rem;color:#c3c9d6}figure{margin:20px 0}figure img{max-width:100%;background:#fff;border-radius:10px;border:1px solid var(--border)}figcaption{font-size:.78rem;color:var(--muted);margin-top:6px;text-align:center}@media (max-width: 720px){.layout{flex-direction:column}.sidebar{width:100%;flex-direction:row;flex-wrap:wrap;height:auto;padding:10px}.sidebar .brand{width:100%;padding-bottom:8px}.sidebar nav{flex-direction:row;flex-wrap:wrap}.sidebar nav button{padding:8px 10px;font-size:.8rem}.sidebar-foot{border-top:none}}