:root{--primary:#1269d3;--primary-dark:#0754ad;--primary-soft:#eaf4ff;--ink:#25282d;--muted:#6d7683;--line:#dfe5eb;--backdrop:#f3f6f9;--white:#fff;--danger:#b42318;--success:#18864b;--shadow:0 18px 50px #1b375a17}*{box-sizing:border-box}html{background:var(--backdrop);min-width:320px}body{color:var(--ink);background:linear-gradient(#fff 0,#f6f9fc 34rem);margin:0;font-family:Arial,Helvetica,sans-serif}button,input,textarea,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}:focus-visible{outline-offset:2px;outline:3px solid #1269d34d}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.shell{width:min(1240px,100% - 40px);margin-inline:auto}.app-page{min-height:100vh}.site-header{z-index:20;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#fffffff5;border-radius:0 0 24px 24px;position:sticky;top:0;box-shadow:0 4px 20px #14284612}.header-inner{align-items:center;gap:30px;min-height:88px;display:flex}.brand{align-items:center;gap:10px;min-width:188px;display:flex}.brand-mark{gap:3px;width:43px;height:42px;display:grid;transform:skew(-15deg)}.brand-mark i{background:linear-gradient(90deg,#087ee7,#25b8ec);border-radius:3px;display:block}.brand-mark i:first-child{width:28px;margin-left:14px}.brand-mark i:nth-child(2){width:38px;margin-left:5px}.brand-mark i:nth-child(3){width:28px}.brand-name{letter-spacing:.04em;font-size:17px;line-height:.95}.brand-name strong{font-size:21px}.header-copy{border-left:1px solid var(--line);flex-direction:column;flex:1;gap:4px;padding-left:28px;display:flex}.eyebrow{color:var(--primary);letter-spacing:.13em;font-size:12px;font-weight:800;line-height:1.2}.header-subtitle{color:var(--muted);font-size:14px}.primary-button,.secondary-button{border:1px solid #0000;border-radius:12px;justify-content:center;align-items:center;gap:12px;min-height:46px;padding:0 20px;font-weight:700;transition:all .18s;display:inline-flex}.primary-button{color:#fff;background:linear-gradient(135deg, var(--primary), #1aaae1);box-shadow:0 8px 20px #1269d32e}.primary-button:hover{transform:translateY(-1px);box-shadow:0 11px 24px #1269d33d}.secondary-button{background:var(--primary-soft);color:var(--primary-dark);border-color:#cce3fb}.secondary-button:hover{background:#dceeff}.text-button{color:var(--primary-dark);background:0 0;border:0;padding:5px 0;font-weight:700}.hero-grid{grid-template-columns:minmax(250px,.68fr) minmax(600px,1.32fr);align-items:start;gap:42px;padding:54px 0 48px;display:grid}.hero-copy{padding:38px 0;position:sticky;top:130px}.hero-copy h1{letter-spacing:-.045em;max-width:540px;margin:16px 0 20px;font-size:clamp(38px,4vw,62px);line-height:.99}.hero-copy>p{color:var(--muted);max-width:520px;font-size:18px;line-height:1.6}.trust-list{flex-wrap:wrap;gap:8px;margin-top:30px;display:flex}.trust-list span{border:1px solid var(--line);color:#4f5966;background:#fff;border-radius:10px;padding:9px 12px;font-size:13px}.chat-card{height:calc(100vh - 142px);min-height:690px;max-height:850px;box-shadow:var(--shadow);background:#fff;border:1px solid #e4e9ef;border-radius:22px;grid-template-rows:auto 1fr auto;display:grid;overflow:hidden}.chat-toolbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;padding:18px 22px;display:flex}.chat-toolbar strong{font-size:14px}.chat-toolbar p{color:var(--muted);margin:4px 0 0 17px;font-size:12px}.status-dot{background:#20ac65;border-radius:50%;width:9px;height:9px;margin-right:8px;display:inline-block;box-shadow:0 0 0 4px #e1f6eb}.messages{background:linear-gradient(#fbfdff,#f4f8fb);padding:24px;overflow-y:auto}.message{border:1px solid var(--line);background:#fff;border-radius:15px;width:fit-content;max-width:min(82%,720px);margin-bottom:18px;padding:15px 17px;box-shadow:0 4px 12px #1e3c5a0a}.message.user{background:var(--primary);border-color:var(--primary);color:#fff;border-bottom-right-radius:4px;margin-left:auto}.message.assistant{border-bottom-left-radius:4px}.message-error{color:var(--danger);background:#fff5f4;border-color:#f3c7c3}.message-meta{justify-content:space-between;gap:16px;margin-bottom:8px;font-size:12px;display:flex}.message-meta time{opacity:.65;font-variant-numeric:tabular-nums}.message-content{overflow-wrap:anywhere;font-size:15px;line-height:1.55}.message-content>:first-child{margin-top:0}.message-content>:last-child{margin-bottom:0}.message-content table{border-collapse:collapse;max-width:100%;display:block;overflow-x:auto}.message-content th,.message-content td{border:1px solid var(--line);text-align:left;padding:8px 10px}.message-content a{color:#075ebc;text-decoration:underline}.message.user .message-content a{color:#fff}.typing{width:fit-content;color:var(--muted);background:#fff;border-radius:13px;align-items:center;gap:5px;padding:11px 14px;font-size:13px;display:flex}.typing span{background:var(--primary);border-radius:50%;width:5px;height:5px;animation:1s infinite alternate pulse}.typing span:nth-child(2){animation-delay:.2s}.typing span:nth-child(3){margin-right:5px;animation-delay:.4s}@keyframes pulse{to{opacity:.25;transform:translateY(-2px)}}.composer{border-top:1px solid var(--line);background:#fff;padding:16px}.composer textarea,.prompt-editor,.login-card input,select{width:100%;color:var(--ink);background:#fff;border:1px solid #cfd8e2;border-radius:12px;outline:none;transition:border .15s,box-shadow .15s}.composer textarea{resize:none;min-height:74px;padding:13px 15px;line-height:1.45}.composer textarea:focus,.prompt-editor:focus,.login-card input:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 4px #1269d31a}.composer-footer{justify-content:space-between;align-items:center;gap:15px;padding-top:10px;display:flex}.composer-footer>span{color:var(--muted);font-size:11px}.inline-error{color:var(--danger);background:#fff1f0;border:1px solid #f3c7c3;border-radius:10px;padding:10px 12px}.success-note{color:var(--success);background:#eefaf3;border:1px solid #c9ebd7;border-radius:10px;padding:10px 12px}.login-shell{place-items:center;min-height:calc(100vh - 90px);padding-block:50px;display:grid}.login-card{border:1px solid var(--line);width:min(440px,100%);box-shadow:var(--shadow);background:#fff;border-radius:20px;padding:34px}.login-card h1{margin:12px 0 8px;font-size:31px}.login-card>p{color:var(--muted);margin-bottom:24px;line-height:1.5}.login-card label{gap:7px;margin-top:15px;font-size:13px;font-weight:700;display:grid}.login-card input{height:48px;padding:0 13px}.login-card button{width:100%;margin-top:22px}.settings-shell{padding:40px 0 70px}.settings-layout{grid-template-columns:minmax(0,1fr) 330px;align-items:start;gap:22px;display:grid}.panel{border:1px solid var(--line);background:#fff;border-radius:18px;box-shadow:0 8px 30px #19375a0d}.settings-main{padding:28px}.panel-heading{justify-content:space-between;align-items:center;gap:20px;display:flex}.panel-heading h1{margin:7px 0 0;font-size:30px}.muted{color:var(--muted);line-height:1.5}.prompt-editor{resize:vertical;min-height:620px;padding:16px;font-family:Cascadia Code,Consolas,monospace;font-size:13px;line-height:1.55}.settings-sidebar{gap:16px;display:grid;position:sticky;top:120px}.compact-panel{padding:20px}.status-list{margin:14px 0 0}.status-list div{border-top:1px solid var(--line);justify-content:space-between;gap:14px;padding:11px 0;display:flex}.status-list dt{color:var(--muted)}.status-list dd{text-align:right;margin:0;font-weight:700}select{height:46px;margin-top:12px;padding:0 10px}.full-button{width:100%}.logout-button{color:var(--danger);justify-self:start}.settings-loading{text-align:center;color:var(--muted);padding:50px}@media (max-width:980px){.hero-grid{grid-template-columns:1fr;padding-top:30px}.hero-copy{padding:20px 0 0;position:static}.hero-copy h1{font-size:42px}.chat-card{height:720px}.settings-layout{grid-template-columns:1fr}.settings-sidebar{grid-row:1;position:static}.header-copy{display:none}}@media (max-width:620px){.shell{width:min(100% - 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