:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f7f6f2;--panel:#fff;--text:#1b1d22;--muted:#667085;--line:#dedbd2;--accent:#146c5d;--accent-strong:#0c4e43;--danger:#a1352b;--soft:#eef5f1;--shadow:0 18px 50px #1a1e2314}*{box-sizing:border-box}html,body{background:var(--bg);min-height:100%;color:var(--text);margin:0;font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}.shell{grid-template-rows:auto 1fr;min-height:100vh;display:grid}.topbar{border-bottom:1px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#f7f6f2eb;justify-content:space-between;align-items:center;gap:16px;padding:18px clamp(18px,4vw,44px);display:flex}.brand{align-items:center;gap:12px;font-weight:800;display:flex}.mark{background:var(--accent);color:#fff;letter-spacing:0;border-radius:8px;place-items:center;width:38px;height:38px;display:grid}.nav{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.nav a,.nav button,.button,.secondary-button{border:1px solid var(--line);cursor:pointer;color:var(--text);background:#fff;border-radius:8px;padding:10px 14px}.button{border-color:var(--accent);background:var(--accent);color:#fff;font-weight:700}.button:hover{background:var(--accent-strong)}.secondary-button:hover,.nav a:hover,.nav button:hover{border-color:var(--accent)}.main{width:min(1180px,100%);margin:0 auto;padding:clamp(20px,4vw,44px)}.login-wrap{place-items:center;min-height:100vh;padding:24px;display:grid}.login-panel,.panel{background:var(--panel);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:8px}.login-panel{width:min(440px,100%);padding:28px}.eyebrow{color:var(--accent);text-transform:uppercase;font-size:13px;font-weight:800}h1{letter-spacing:0;overflow-wrap:anywhere;-webkit-hyphens:auto;hyphens:auto;margin:8px 0 12px;font-size:clamp(30px,4vw,52px);line-height:1.08}h2{letter-spacing:0;margin:0 0 10px;font-size:24px}p{color:var(--muted);line-height:1.55}label{color:#344054;gap:8px;font-weight:700;display:grid}.field-hint{color:var(--muted);font-size:13px;font-weight:400}input,textarea{border:1px solid var(--line);background:#fff;border-radius:8px;width:100%;padding:12px 14px}textarea{resize:vertical;min-height:110px}.form{gap:16px;margin-top:20px;display:grid}.hero{grid-template-columns:minmax(0,440px) minmax(420px,1fr);align-items:stretch;gap:clamp(24px,4vw,44px);display:grid}.intro{min-width:0;padding:28px 0}.chat-panel,.admin-grid{gap:16px;display:grid}.chat-panel{grid-template-rows:1fr auto;min-width:0;min-height:620px;padding:16px}.messages{align-content:start;gap:14px;padding:4px;display:grid;overflow:auto}.message{white-space:pre-wrap;border-radius:8px;max-width:88%;padding:14px 16px;line-height:1.55}.message.user{background:var(--accent);color:#fff;justify-self:end}.message.assistant{background:var(--soft);justify-self:start}.sources{gap:8px;margin-top:12px;display:grid}.source{border-left:3px solid var(--accent);color:#475467;padding-left:10px;font-size:14px}.composer{grid-template-columns:1fr auto;align-items:end;gap:10px;display:grid}.status{color:var(--muted);font-size:14px}.error{color:var(--danger);font-weight:700}.admin-grid{grid-template-columns:minmax(0,1fr) minmax(300px,420px)}.panel{padding:20px}.doc-list{gap:10px;margin-top:16px;display:grid}.doc-row{border:1px solid var(--line);border-radius:8px;justify-content:space-between;gap:16px;padding:12px;display:flex}@media (max-width:980px){.hero,.admin-grid{grid-template-columns:1fr}.chat-panel{min-height:68vh}.composer{grid-template-columns:1fr}.message{max-width:100%}}