:root{--bg:#f4f3ef;--surface:#fff;--surface-2:#edebe4;--ink:#1a1d21;--muted:#5e636a;--line:#d9d6cd;--navy:#1f3a5f;--on-navy:#fff;--lamp:#b9761a;--ok:#2e6b4f;--err:#a23b2a;--shadow:0 1px 2px #1a1d210f,0 8px 24px #1a1d210f;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root{--bg:#14161a;--surface:#1c1f24;--surface-2:#22262c;--ink:#eceae4;--muted:#a3a9b1;--line:#31363d;--navy:#8fb3de;--on-navy:#14161a;--lamp:#e0a040;--ok:#6fc39a;--err:#f08a78;--shadow:0 1px 2px #0006,0 8px 24px #00000059;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--ink);margin:0;font-family:Yu Gothic UI,Meiryo UI,Meiryo,system-ui,-apple-system,Hiragino Kaku Gothic ProN,Noto Sans JP,sans-serif;font-size:16px;line-height:1.7}h1,h2,h3{text-wrap:balance;margin:0;line-height:1.35}h1{font-size:24px}h2{font-size:19px}h3{font-size:17px}a{color:var(--navy)}p{margin:.5em 0}.muted{color:var(--muted)}.err{color:var(--err);font-weight:700}.ok{color:var(--ok)}.narrow{max-width:520px;margin:0 auto;padding:48px 16px}.stack{flex-direction:column;gap:10px;display:flex}.row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.spread{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 16px;display:flex}label{font-weight:700}input,textarea,select{font:inherit;color:inherit;background:var(--surface);border:1px solid var(--line);border-radius:6px;width:100%;padding:10px 12px}textarea{resize:vertical}input:focus-visible,textarea:focus-visible,select:focus-visible,button:focus-visible,a:focus-visible{outline:2px solid var(--navy);outline-offset:1px}.btn{min-height:42px;font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line);cursor:pointer;border-radius:6px;justify-content:center;align-items:center;gap:6px;padding:8px 14px;font-weight:700;text-decoration:none;display:inline-flex}.btn:hover:not(:disabled){border-color:var(--navy)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.primary{background:var(--navy);border-color:var(--navy);color:var(--on-navy)}.btn.danger{color:var(--err);border-color:var(--err)}.btn.small{min-height:34px;padding:4px 10px;font-size:15px;font-weight:400}.btn.on{background:var(--navy);color:var(--on-navy);border-color:var(--navy)}.linkbtn{color:var(--navy);font:inherit;cursor:pointer;background:0 0;border:0;padding:6px 0;text-decoration:underline}.notice{background:var(--surface);border:1px solid var(--lamp);border-left:4px solid var(--lamp);border-radius:4px;margin-top:28px;padding:12px 16px}.notice ul{margin:6px 0 0;padding-left:20px}.card{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:8px;padding:16px}.badge{border:1px solid var(--line);color:var(--muted);white-space:nowrap;border-radius:4px;padding:0 6px;font-size:13px;display:inline-block}.badge.ai{color:var(--ok);border-color:var(--ok)}.badge.stop{color:var(--err);border-color:var(--err)}.app{grid-template-rows:auto 1fr;height:100dvh;display:grid}.top{background:var(--surface);border-bottom:2px solid var(--navy);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:4px 16px;padding:8px 16px;display:flex}.top h1{font-size:18px}.top .sub{color:var(--muted);font-size:14px}.cols{grid-template-columns:190px minmax(0,1fr);min-height:0;display:grid}.nav{background:var(--surface-2);border-right:1px solid var(--line);flex-direction:column;gap:4px;padding:12px;display:flex;overflow:auto}.nav button{font:inherit;text-align:left;color:var(--ink);cursor:pointer;background:0 0;border:0;border-radius:6px;padding:9px 12px}.nav button:hover{background:var(--surface)}.nav button.on{background:var(--navy);color:var(--on-navy);font-weight:700}.pane{min-height:0;padding:16px;overflow:auto}.pane.inner{width:100%;max-width:880px;margin:0 auto}.chat{grid-template-rows:auto minmax(0,1fr) auto;height:100%;min-height:0;display:grid}.bar{border-bottom:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;padding:8px 16px;display:flex}.seg{border:1px solid var(--line);border-radius:6px;display:inline-flex;overflow:hidden}.seg button{font:inherit;background:var(--surface);color:var(--ink);cursor:pointer;border:0;padding:6px 12px}.seg button.on{background:var(--navy);color:var(--on-navy);font-weight:700}.log{padding:16px;overflow:auto}.log-in{flex-direction:column;gap:14px;max-width:820px;margin:0 auto;display:flex}.msg{max-width:100%}.msg.user{background:var(--surface-2);white-space:pre-wrap;overflow-wrap:anywhere;border-radius:10px;align-self:flex-end;max-width:85%;padding:8px 14px}.msg.ai{background:var(--surface);border:1px solid var(--line);overflow-wrap:anywhere;border-radius:10px;padding:10px 16px}.msg.ai table{border-collapse:collapse;max-width:100%;display:block;overflow-x:auto}.msg.ai th,.msg.ai td{border:1px solid var(--line);padding:4px 10px}.msg.ai pre{background:var(--surface-2);border-radius:6px;padding:10px;overflow-x:auto}.msg .tools{gap:12px;margin-top:4px;display:flex}.status{color:var(--lamp);font-weight:700}.status:before{content:"● "}.plan{border:1px solid var(--navy);border-left:4px solid var(--navy);background:var(--surface);border-radius:6px;padding:12px 16px}.plan ol{margin:6px 0 10px;padding-left:22px}.plan pre{background:var(--surface-2);white-space:pre-wrap;overflow-wrap:anywhere;border-radius:6px;max-height:280px;padding:10px;overflow:auto}.composer{border-top:1px solid var(--line);background:var(--surface);padding:10px 16px}.composer-in{flex-direction:column;gap:8px;max-width:820px;margin:0 auto;display:flex}.chips{flex-wrap:wrap;gap:6px;display:flex}.chip{background:var(--surface-2);border-radius:4px;align-items:center;gap:6px;padding:2px 8px;font-size:14px;display:inline-flex}.chip button{color:var(--muted);cursor:pointer;font:inherit;background:0 0;border:0;padding:0}.rec{color:var(--err);border-color:var(--err)}.empty{color:var(--muted);text-align:center;padding:40px 16px}.files{flex-direction:column;gap:6px;margin:12px 0 0;padding:0;list-style:none;display:flex}.files li{background:var(--surface);border:1px solid var(--line);border-radius:6px;justify-content:space-between;align-items:center;gap:8px;padding:8px 12px;display:flex}.files .fname{overflow-wrap:anywhere;min-width:0}.slots{flex-direction:column;gap:10px;margin-top:12px;display:flex}.drop{border:2px dashed var(--line);text-align:center;color:var(--muted);border-radius:8px;padding:18px}.drop.over{border-color:var(--navy);color:var(--ink)}.modal{z-index:10;background:#00000073;place-items:center;padding:16px;display:grid;position:fixed;inset:0}.modal .card{width:100%;max-width:440px}.admin{flex-direction:column;gap:16px;max-width:1100px;margin:0 auto;padding:24px 16px 64px;display:flex}.grid{grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px;display:grid}.course{border-top:1px solid var(--line);padding:12px 0}.course:first-of-type{border-top:0}.tbl{border-collapse:collapse;width:100%;font-size:15px}.tbl th,.tbl td{border-bottom:1px solid var(--line);text-align:left;padding:6px 8px}.tbl td.num,.tbl th.num{text-align:right}.scroll{overflow-x:auto}code{background:var(--surface-2);overflow-wrap:anywhere;border-radius:4px;padding:1px 6px;font-family:ui-monospace,Menlo,Consolas,monospace}@media (max-width:760px){.cols{grid-template-rows:auto minmax(0,1fr);grid-template-columns:minmax(0,1fr)}.nav{border-right:0;border-bottom:1px solid var(--line);flex-direction:row;padding:6px;overflow-x:auto}.nav button{white-space:nowrap;padding:6px 10px}}