:root{--blue:#4a6da7;--blue-dark:#365889;--nav:#f0f1f2;--ink:#333;--muted:#666;--line:#d5d5d5;--panel:#f7f7f7;--danger:#a12d2d}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:Arial,"Helvetica Neue",sans-serif;background:#fff;min-height:100vh}.hidden{display:none!important}.login-shell{width:min(620px,calc(100% - 32px));min-height:100vh;margin:auto;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}.brand-mark,.mini-mark{display:grid;place-items:center;background:var(--blue);color:#fff;font-weight:700}.brand-mark{width:72px;height:72px;font-size:25px;margin-bottom:14px}.eyebrow{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#5b5b5b;margin:12px 0}.login-shell h1{font-size:34px;font-weight:400;color:var(--blue-dark);margin:5px 0 10px}.lede{font-size:17px;line-height:1.5;color:var(--muted);max-width:520px}.login-card{width:min(460px,100%);margin-top:18px;padding:24px;background:var(--panel);border:1px solid var(--line);text-align:left}.login-card label{display:block;font-size:14px;font-weight:700;margin-bottom:8px}.password-row{display:flex;gap:8px}.password-row input,.ask-box textarea{border:1px solid #aaa;background:#fff;color:var(--ink);outline:none}.password-row input{width:100%;height:44px;padding:0 12px}.password-row input:focus,.ask-box textarea:focus{border-color:var(--blue);box-shadow:0 0 0 2px rgba(74,109,167,.16)}button{font:inherit;border:0;cursor:pointer}.password-row button,.ask-actions>button{background:var(--blue);color:#fff;font-weight:700;padding:0 22px}.password-row button:hover,.ask-actions>button:hover{background:var(--blue-dark)}.error{font-size:13px;color:var(--danger);min-height:18px}.fineprint{font-size:12px;color:var(--muted);margin-top:18px}.topbar{background:var(--blue);color:#fff}.topbar-inner{height:72px;width:min(1180px,calc(100% - 36px));margin:auto;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;font-size:21px}.brand small{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:#e1e8f3;margin-top:3px}.mini-mark{width:44px;height:44px;background:#fff;color:var(--blue);font-size:15px}.header-actions{display:flex;align-items:center;gap:14px}.badge{font-size:11px;background:rgba(255,255,255,.15);padding:7px 10px}.ghost{color:#fff;background:transparent;text-decoration:underline}.main-nav{height:46px;background:var(--nav);border-bottom:1px solid #ccc}.main-nav>div{width:min(1180px,calc(100% - 36px));height:100%;margin:auto;display:flex}.main-nav a{display:flex;align-items:center;padding:0 22px;color:#333;text-decoration:none;font-weight:700;font-size:14px;border-left:1px solid #ddd}.main-nav a:last-child{border-right:1px solid #ddd}.main-nav a:hover{background:#e2e4e6;color:var(--blue-dark)}.workspace{width:min(1040px,calc(100% - 36px));margin:auto}.hero{padding:48px 0 34px}.hero>.eyebrow{color:var(--blue-dark)}.hero h2{font-size:clamp(34px,5vw,52px);line-height:1.1;font-weight:400;color:#333;margin:0;max-width:760px}.hero>p:not(.eyebrow){font-size:17px;line-height:1.55;color:var(--muted);margin:15px 0 26px}.ask-box{border:1px solid #bbb;background:#fff}.ask-box textarea{width:100%;min-height:120px;resize:vertical;border:0;padding:20px;font-size:17px;line-height:1.5}.ask-actions{border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:12px 14px}.mode-picker{display:flex;gap:20px}.mode-picker label{font-size:13px;color:#555}.mode-picker input{accent-color:var(--blue)}.ask-actions>button{height:42px}.ask-actions>button:disabled{opacity:.55}.source-strip{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px}.source-strip span{font-size:11px;text-transform:uppercase;color:#555;background:var(--nav);padding:8px 10px}.source-strip i{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--blue);margin-right:7px}.how{margin:22px 0 46px;padding:28px;background:var(--panel);border-top:4px solid var(--blue)}.how h3{font-size:25px;font-weight:400;color:var(--blue-dark);margin:0 0 22px}.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.how-grid>div{display:flex;gap:13px}.how-grid b{display:grid;place-items:center;flex:0 0 32px;height:32px;background:var(--blue);color:#fff}.how-grid strong{display:block;font-size:14px;margin-bottom:5px}.how-grid span{font-size:13px;line-height:1.45;color:#5a5a5a}.results{padding:36px 0 60px;border-top:1px solid var(--line)}.result-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:20px}.result-head .eyebrow{margin:0 0 6px}.result-head h3{font-size:28px;font-weight:400;color:var(--blue-dark);margin:0}.verified{font-size:12px;color:#3d714b}.answer{background:#f3f5f8;border-left:5px solid var(--blue);padding:24px;white-space:pre-wrap;font-size:15px;line-height:1.65;margin-bottom:22px}.notice{padding:14px 16px;background:#fff5dd;border:1px solid #e0c782;color:#634e1b;margin-bottom:18px;font-size:14px}.sources{display:grid;gap:10px}.source-card{border:1px solid var(--line);background:#fff}.source-card button{width:100%;background:#f6f6f6;padding:16px 18px;text-align:left;display:flex;justify-content:space-between;color:inherit}.source-card button:hover{background:#eceff4}.reference{font-weight:700;color:var(--blue-dark)}.source-tag{font-size:9px;text-transform:uppercase;color:#666;margin-left:9px}.source-score{font-size:11px;color:#666}.source-content{display:none;border-top:1px solid var(--line);padding:18px;font-family:Georgia,serif;font-size:15px;line-height:1.65;color:#444}.source-card.open .source-content{display:block}.context-block+.context-block{border-top:1px dotted #bbb;padding-top:15px;margin-top:15px}.context-block strong{display:block;font:700 12px Arial,sans-serif;color:var(--blue-dark);margin-bottom:5px}footer{background:#313131;color:#ddd;padding:28px max(24px,calc((100% - 1180px)/2));display:flex;justify-content:space-between;align-items:center;font-size:11px}footer div{display:flex;flex-direction:column;gap:6px}footer strong{font-size:15px;color:#fff}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:720px){.topbar-inner,.main-nav>div{width:calc(100% - 24px)}.badge{display:none}.main-nav a{padding:0 12px;font-size:12px}.workspace{width:calc(100% - 24px)}.hero{padding-top:34px}.ask-actions,.result-head{align-items:stretch;flex-direction:column}.mode-picker{justify-content:space-between}.ask-actions>button{width:100%}.how-grid{grid-template-columns:1fr}.password-row{flex-direction:column}.password-row button{height:44px}footer{gap:14px;align-items:flex-start;flex-direction:column}}