:root{--blue: #3f6fff;--blue-dark: #2854dc;--blue-soft: #eef4ff;--text: #20242c;--muted: #7c8491;--faint: #aeb5c1;--line: #e8ebf1;--panel: #f7f8fb;--card: #ffffff;--danger: #b54c3f;--shadow: 0 18px 50px rgb(30 42 70 / .1);--radius: 18px}*{box-sizing:border-box}body{margin:0;min-width:320px;color:var(--text);background:#fff;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.55}button,input,textarea{font:inherit}button{cursor:pointer}.boot-screen,.login-page{min-height:100dvh}.boot-screen{display:grid;gap:12px;place-content:center;color:var(--muted);background:#fff}.logo-mark{display:inline-grid;width:34px;height:34px;place-items:center;border-radius:10px;color:#fff;background:linear-gradient(135deg,#3f6fff,#75a8ff);font-weight:900}.login-page{display:grid;grid-template-columns:minmax(0,1fr) 430px;gap:32px;align-items:center;width:min(1120px,calc(100vw - 48px));margin:0 auto;padding:36px 0}.login-hero{display:grid;gap:22px}.login-brand{display:inline-flex;align-items:center;gap:12px;color:var(--blue);font-size:22px}.login-hero h1{max-width:680px;margin:0;font-size:clamp(38px,6vw,72px);line-height:1.05;letter-spacing:0}.login-hero p{max-width:620px;margin:0;color:var(--muted);font-size:17px}.login-metrics{display:flex;flex-wrap:wrap;gap:10px}.login-metrics span,.mode-pills span,.quick-modes span,.missing-row span{display:inline-flex;min-height:34px;align-items:center;gap:7px;padding:0 12px;border:1px solid #cfe0ff;border-radius:999px;color:var(--blue);background:#f6f9ff;font-weight:760}.login-card,.drawer-card{display:grid;gap:16px;padding:26px;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:var(--shadow)}.login-card h2,.drawer-card h2{margin:0;font-size:26px}.eyebrow{margin:0;color:var(--blue);font-size:12px;font-weight:850;text-transform:uppercase}.login-card label{display:grid;gap:8px;color:#3d4450;font-weight:760}input,textarea{width:100%;border:1px solid var(--line);border-radius:12px;color:var(--text);background:#fff;outline:0}input{height:44px;padding:0 13px}textarea{resize:none}input:focus,textarea:focus{border-color:#aac4ff;box-shadow:0 0 0 4px #3f6fff1f}.primary-button,.secondary-button,.ghost-button,.icon-button,.send-button{display:inline-flex;min-height:42px;align-items:center;justify-content:center;gap:8px;border-radius:999px;font-weight:820}.primary-button{border:1px solid var(--blue);color:#fff;background:var(--blue)}.primary-button:hover{background:var(--blue-dark)}.secondary-button,.ghost-button,.icon-button{border:1px solid var(--line);color:#344055;background:#fff}.secondary-button,.ghost-button{padding:0 16px}.icon-button{width:42px;padding:0}.send-button{width:46px;border:0;color:#fff;background:#a8bdff}.send-button:not(:disabled){background:var(--blue)}.primary-button:disabled,.secondary-button:disabled,.send-button:disabled{cursor:not-allowed;opacity:.64}.login-tabs,.channel-toggle{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;padding:5px;border:1px solid var(--line);border-radius:999px;background:var(--panel)}.login-tabs button,.channel-toggle button{display:inline-flex;min-height:38px;align-items:center;justify-content:center;gap:7px;border:0;border-radius:999px;color:var(--muted);background:transparent;font-weight:800}.login-tabs button.active,.channel-toggle button.active{color:var(--blue);background:#fff;box-shadow:0 3px 10px #21325a14}.code-row{display:grid;grid-template-columns:minmax(0,1fr) 124px;gap:8px}.form-message{margin:0;color:var(--danger);font-size:14px}.chat-app{display:grid;grid-template-columns:306px minmax(0,1fr);min-height:100dvh;background:#fff}.chat-sidebar{display:grid;grid-template-rows:auto auto minmax(0,1fr) auto;min-width:0;border-right:1px solid var(--line);background:var(--panel)}.sidebar-brand,.chat-topbar,.sidebar-user{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px}.brand-button,.sidebar-user button{display:inline-flex;min-width:0;align-items:center;gap:10px;border:0;color:var(--blue);background:transparent;font-size:20px}.new-chat-button{display:inline-flex;min-height:50px;align-items:center;justify-content:center;gap:8px;margin:8px 16px 20px;border:1px solid var(--line);border-radius:999px;color:#20242c;background:#fff;box-shadow:0 4px 14px #1c26440f;font-weight:820}.conversation-list{overflow:auto;padding:0 14px 18px}.conversation-list p{margin:18px 12px 8px;color:var(--faint);font-weight:820}.conversation-list button{display:flex;width:100%;min-height:42px;align-items:center;gap:10px;padding:0 12px;border:0;border-radius:10px;color:#303744;background:transparent;text-align:left}.conversation-list button:hover{background:#fff}.conversation-list span,.sidebar-user span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conversation-list small{display:block;padding:0 12px;color:var(--muted)}.sidebar-user{border-top:1px solid var(--line)}.sidebar-user button{width:100%;color:#263044;text-align:left}.sidebar-user small{display:block;color:var(--muted);font-size:12px}.chat-stage{display:grid;min-width:0;grid-template-rows:auto minmax(0,1fr) auto}.chat-topbar{min-height:72px;border-bottom:1px solid var(--line);background:#ffffffeb;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.chat-topbar>div:first-of-type{display:grid;gap:2px}.chat-topbar span{color:var(--muted);font-size:13px}.topbar-actions{display:flex;align-items:center;gap:10px}.mobile-menu{display:none}.message-scroll{overflow:auto;padding:34px max(24px,calc((100vw - 1180px)/2)) 28px}.message-scroll.empty{display:grid;place-items:center}.empty-chat{display:grid;width:min(720px,100%);justify-items:center;gap:24px;text-align:center}.empty-chat h1{margin:0;font-size:30px;line-height:1.2}.quick-modes{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}.prompt-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;width:100%}.prompt-grid button{min-height:82px;padding:14px;border:1px solid var(--line);border-radius:16px;color:#3a4250;background:#fff;text-align:left}.chat-message{display:grid;grid-template-columns:36px minmax(0,1fr);gap:12px;max-width:860px;margin:0 auto 22px}.chat-message.user{grid-template-columns:minmax(0,1fr) 36px}.chat-message.user .avatar{grid-column:2;grid-row:1}.chat-message.user .bubble{grid-column:1;justify-self:end;color:#fff;background:var(--blue)}.avatar{display:grid;width:36px;height:36px;place-items:center;border-radius:50%;color:#fff;background:var(--blue);font-size:13px;font-weight:900}.bubble{width:fit-content;max-width:min(720px,100%);padding:13px 16px;border-radius:18px;color:#252b36;background:#f3f5fa}.bubble p{margin:0;white-space:pre-line}.bubble small{display:block;margin-top:8px;color:var(--muted)}.chat-message.user .bubble small{color:#ffffffbf}.chat-message.error .bubble{color:var(--danger);background:#fff2f0}.missing-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}.composer{width:min(920px,calc(100% - 48px));margin:0 auto 26px;padding:12px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:0 8px 28px #18234614}.composer textarea{min-height:58px;max-height:180px;padding:12px 10px;border:0;box-shadow:none}.composer-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px}.mode-pills{display:flex;flex-wrap:wrap;gap:8px}.composer-actions{display:flex;align-items:center;gap:8px}.account-drawer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:20;display:grid;justify-items:end;background:#141a283d}.drawer-card{width:min(440px,100vw);min-height:100dvh;overflow:auto;border-radius:24px 0 0 24px}.drawer-card header,.credit-card{display:flex;align-items:center;justify-content:space-between;gap:14px}.credit-card{justify-content:flex-start;padding:16px;border:1px solid #dbe6ff;border-radius:16px;color:#173c78;background:var(--blue-soft)}.credit-card span{display:block;color:#446287}.usage-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.usage-grid span{padding:12px;border:1px solid var(--line);border-radius:14px;color:var(--muted);background:#fff;font-size:12px}.usage-grid b{display:block;color:var(--text);font-size:22px}.pending-order{display:grid;gap:7px;padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--panel)}.pending-order span,.pending-order small{color:var(--muted);word-break:break-all}.plan-list{display:grid;gap:12px}.plan-card{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 14px;padding:15px;border:1px solid var(--line);border-radius:16px;background:#fff}.plan-card h3,.plan-card p{margin:0}.plan-card p,.plan-card span{color:var(--muted)}.plan-card>strong{color:var(--blue);font-size:24px}.plan-card button{grid-column:1 / -1}.chat-app.collapsed{grid-template-columns:0 minmax(0,1fr)}.chat-app.collapsed .chat-sidebar{overflow:hidden;border-right:0}@media(max-width:900px){.login-page,.chat-app{grid-template-columns:1fr}.login-page{width:min(100% - 32px,520px)}.login-hero{padding-top:16px}.chat-sidebar{position:fixed;inset:0 auto 0 0;z-index:10;width:min(306px,86vw);transform:translate(-100%);transition:transform .18s ease}.chat-app:not(.collapsed) .chat-sidebar{transform:translate(0)}.mobile-menu{display:inline-flex}.prompt-grid,.usage-grid{grid-template-columns:1fr}.topbar-actions .ghost-button{padding:0 12px}.message-scroll{padding:24px 16px}.composer{width:calc(100% - 24px);margin-bottom:14px}}@media(max-width:560px){.login-card,.drawer-card{padding:20px}.login-tabs,.channel-toggle,.code-row,.plan-card{grid-template-columns:1fr}.chat-topbar{align-items:flex-start;flex-direction:column}.topbar-actions{width:100%;justify-content:space-between}.mode-pills span:nth-child(2){display:none}}