:root{color-scheme:dark;--bg:#100e17;--panel:#181521;--soft:#211c2b;--line:#332b40;--text:#f4eff8;--muted:#b1a6be;--accent:#ffbf69;--danger:#f08ca9;--app-height:100dvh;font:16px/1.6 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:var(--bg);color:var(--text);height:var(--app-height);overflow:hidden}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;min-height:44px;border:1px solid transparent;border-radius:12px;background:var(--accent);color:#281b0c;font-weight:650;padding:10px 17px}button:disabled{opacity:.5;cursor:wait}button:hover:not(:disabled){filter:brightness(1.08)}button:focus-visible,a:focus-visible,textarea:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:3px}a{color:var(--accent)}.secondary{background:transparent;border-color:var(--line);color:var(--text)}.text-button{background:transparent;color:var(--accent);padding:4px 0;min-height:36px;font-size:13px}.icon-button{background:transparent;color:var(--text);width:44px;height:44px;padding:10px;font-size:24px;display:inline-grid;place-items:center;flex-shrink:0}.icon-button:hover{background:var(--soft)}svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.topbar{height:68px;padding:0 28px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:12px}.brand{font-size:28px;font-weight:800;letter-spacing:-1px;display:flex;align-items:baseline}.brand>span,.welcome-symbol>span{color:var(--accent)}.brand small{font-size:10px;letter-spacing:.5px;margin-left:12px;color:var(--muted);font-weight:500}.top-actions{display:flex;align-items:center;gap:12px;min-width:0}.balance-chip{font-size:12px;color:var(--muted)}.compact{font-size:13px;min-height:36px;padding:6px 12px}.shell{height:calc(var(--app-height) - 68px);max-width:1480px;margin:auto;display:grid;grid-template-columns:240px minmax(0,1fr)}.sidebar{padding:24px 18px;display:flex;flex-direction:column;border-right:1px solid var(--line);overflow-y:auto;min-height:0}.new-chat{text-align:left}.eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:1.5px;font-weight:650;color:var(--muted)}.sidebar>.eyebrow{margin:26px 10px 10px}.conversation-list{display:flex;flex-direction:column;gap:5px}.conversation-list button{background:none;color:var(--muted);text-align:left;font-size:13px;font-weight:400;padding:10px 12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%;border-radius:9px;flex-shrink:0}.conversation-list button.active{background:var(--soft);color:var(--text)}.conversation-list button:hover{background:var(--panel)}.sidebar-note{margin-top:auto;padding:32px 10px 0;color:var(--muted);font-size:11px;line-height:1.8}.evidence-dot{display:block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-bottom:10px}.chat-stage{min-height:0;min-width:0;display:flex;flex-direction:column;position:relative}.transcript{flex:1;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--line) transparent;min-height:0}.message-column,.composer-column{max-width:800px;margin:0 auto;width:100%;padding:0 32px}.message-column{padding-top:26px;padding-bottom:24px}.welcome{max-width:660px;margin:clamp(10px,7vh,70px) auto 10px}.welcome-symbol{font-size:36px;font-weight:800;line-height:1;letter-spacing:-2px;margin-bottom:28px}.welcome h1{font-size:clamp(28px,3vw,38px);line-height:1.2;letter-spacing:-1.3px;font-weight:650;margin:12px 0 20px}.welcome-copy{font-size:15px;color:var(--muted);max-width:560px;line-height:1.8}.welcome-prompt{font-size:14px;margin:26px 0 14px}.examples{display:flex;flex-direction:column;gap:8px;align-items:flex-start}.examples button{background:var(--panel);border:1px solid var(--line);color:var(--text);font-size:13px;font-weight:400;text-align:left;padding:10px 14px}.trial-note{margin-top:22px}.muted{color:var(--muted);font-size:13px}.message{margin-bottom:26px;overflow-wrap:anywhere;min-width:0}.message.user{display:flex;justify-content:flex-end}.bubble{max-width:85%;background:var(--soft);padding:12px 18px;border-radius:20px 20px 4px 20px;white-space:pre-wrap;line-height:1.65}.message-heading{font-size:12px;display:flex;gap:8px;align-items:center;color:var(--muted);margin-bottom:8px}.message-heading b{color:var(--text)}.avatar{display:inline-grid;place-items:center;width:25px;height:25px;border-radius:8px;background:var(--soft);color:var(--accent);font-weight:750}.answer-body{line-height:1.8;font-size:15px}.answer-body p{margin:0 0 14px}.answer-body h3,.answer-body h4{line-height:1.4;margin:22px 0 10px}.answer-body h3:first-child,.answer-body h4:first-child{margin-top:0}.answer-body ul,.answer-body ol{padding-left:22px;margin:8px 0 18px}.answer-body li{margin:5px 0}.answer-body pre{overflow-x:auto;max-width:100%;padding:12px;background:var(--panel);border:1px solid var(--line);border-radius:8px;white-space:pre}.answer-body code{font-size:.9em;background:var(--soft);padding:2px 4px;border-radius:4px}.table-scroll{max-width:100%;overflow-x:auto;margin:12px 0 20px}.answer-body table{border-collapse:collapse;min-width:100%;font-size:13px}.answer-body th,.answer-body td{border:1px solid var(--line);padding:8px 12px;text-align:left;min-width:100px}.answer-body th{background:var(--panel)}.message-tools{display:flex;align-items:center;gap:16px;color:var(--muted);font-size:11px}.message-tools button{color:var(--muted);font-size:11px}.pending{color:var(--muted);padding:16px 0;font-size:14px}.pending::before{content:'';display:inline-block;width:7px;height:7px;background:var(--accent);border-radius:50%;margin-right:10px;animation:pulse 1.6s ease-in-out infinite}@keyframes pulse{50%{opacity:.3}}
.composer-area{flex-shrink:0;position:relative;padding:8px 0 max(12px,env(safe-area-inset-bottom));background:var(--bg)}.composer{display:flex;align-items:flex-end;gap:8px;background:var(--panel);border:1px solid #51435f;border-radius:20px;padding:10px 10px 10px 18px;box-shadow:0 5px 25px #0002}.composer:focus-within{border-color:var(--accent)}textarea{display:block;min-height:44px;max-height:160px;resize:none;flex:1;min-width:0;background:none;border:0;color:var(--text);padding:10px 0;line-height:1.5;outline:none!important;font-size:16px}textarea::placeholder{color:#a196ad}.send-button{height:44px;min-width:44px;width:44px;padding:10px;border-radius:14px;display:grid;place-items:center}.composer-meta{display:flex;justify-content:space-between;gap:8px;margin:8px 3px 0;font-size:11px;color:var(--muted)}.upgrade-hint{font-size:11px;color:var(--muted);margin:3px 3px 0;line-height:1.5}.upgrade-hint button{font-size:11px;min-height:30px;padding:0 3px}.legal-line{font-size:10px;color:#968aa4;text-align:center;margin:8px 0 0}.latest{position:absolute;left:50%;transform:translate(-50%,-100%);top:-12px;background:var(--soft);box-shadow:0 4px 14px #0005;font-size:12px;white-space:nowrap}.notice{border:1px solid #685038;border-radius:14px;background:#241d1a;padding:13px 15px;display:flex;gap:14px;align-items:center;margin-bottom:10px}.notice strong{font-size:13px}.notice p{font-size:12px;color:var(--muted);margin:3px 0 0;line-height:1.6}.notice button{flex-shrink:0;font-size:12px;padding:8px 12px}.error{color:var(--danger)}
dialog{border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:22px;padding:0;width:min(480px,calc(100% - 28px));max-height:calc(var(--app-height) - 36px);overflow-y:auto;overscroll-behavior:contain;box-shadow:0 24px 90px #0008}dialog::backdrop{background:#08060dc4;backdrop-filter:blur(4px)}.dialog-body{padding:32px}.dialog-body h2{font-size:25px;line-height:1.3;letter-spacing:-.6px;margin:12px 24px 15px 0}.dialog-body>p{font-size:14px;color:var(--muted)}.dialog-body label{display:block;font-size:13px;margin:16px 0 7px}.dialog-body input,.dialog-body select{display:block;width:100%;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--text);padding:11px 12px;min-height:46px;font-size:16px}.close-dialog.icon-button{position:absolute;right:9px;top:8px}.wide{width:100%;margin-top:16px}.row{display:flex;gap:10px;flex-wrap:wrap}.row button{flex:1}.account-actions{border-top:1px solid var(--line);margin-top:26px;padding-top:8px}.danger{display:block;color:var(--danger);margin-top:20px}.danger-button{background:#692a41;color:#fff}.pill{font-size:12px;border:1px solid var(--line);padding:4px 9px;border-radius:20px;color:var(--accent)}.benefits{list-style:none;padding:0;margin:20px 0 25px;font-size:13px}.benefits li{padding:5px 0 5px 23px;position:relative}.benefits li::before{content:'✓';color:var(--accent);position:absolute;left:0}.amounts{display:flex;gap:8px}.amounts button{flex:1;padding:10px 8px}.amounts .selected{border-color:var(--accent);color:var(--accent)}.credit-preview{color:var(--accent);font-size:14px;font-weight:650;margin-bottom:3px}.address{font:13px/1.7 ui-monospace,monospace;overflow-wrap:anywhere;background:var(--bg);padding:10px;border-radius:8px}#pay-qr{background:white;border-radius:12px;padding:8px;display:block;margin:20px auto}.network-warning{font-size:13px;color:var(--accent)}#pay-status{font-size:14px}#invoice>a{font-size:12px}#mobile-chat-list{margin-top:20px}.mobile-only{display:none}
@media(max-width:760px){.topbar{height:60px;padding:0 14px}.brand{font-size:25px}.brand small{margin-left:7px}.top-actions{gap:3px}.balance-chip{display:none}.topbar .compact{min-height:44px;max-width:150px;font-size:11px;padding:6px 9px}.shell{height:calc(var(--app-height) - 60px);display:block}.sidebar{display:none}.chat-stage{height:100%}.mobile-only{display:inline-grid}.message-column,.composer-column{padding-left:16px;padding-right:16px}.message-column{padding-top:16px;padding-bottom:12px}.welcome{margin:18px auto 8px}.welcome-symbol{font-size:30px;margin-bottom:20px}.welcome h1{font-size:29px;letter-spacing:-.8px;margin:10px 0 16px}.welcome-copy{font-size:14px;line-height:1.75}.welcome-prompt{margin-top:20px}.examples button{font-size:12px;width:100%}.welcome .eyebrow{font-size:10px;letter-spacing:1px}.trial-note{font-size:11px}.composer-area{padding-top:6px}.composer{border-radius:18px;padding:7px 7px 7px 13px}.composer-meta{font-size:12px;flex-wrap:wrap}.legal-line{font-size:9px}.upgrade-hint{display:block}.upgrade-hint>span{display:none}.upgrade-hint button{font-size:12px;min-height:32px}.bubble{max-width:90%;font-size:15px}.answer-body{font-size:15px}.notice{flex-direction:column;align-items:stretch;gap:8px;padding:10px 12px;max-height:180px;overflow-y:auto}.notice button{min-height:38px}.notice p{font-size:11px}.dialog-body{padding:25px 21px}.dialog-body h2{font-size:23px}.dialog-body>p{font-size:13px}dialog{border-radius:18px}.benefits{font-size:12px}.message{margin-bottom:22px}}
@media(max-height:540px){.legal-line,.upgrade-hint{display:none}.notice p{display:none}.notice{flex-direction:row;align-items:center;max-height:90px}.welcome{margin-top:0}.composer-area{padding-bottom:5px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important}}

.payment-success{padding:18px;background:#203326;border:1px solid #3e6548;border-radius:12px;color:#a6edb5;font-weight:600}
.invoice-history {margin:18px 0;padding-top:14px;border-top:1px solid var(--line)}
#invoice-list {display:grid;gap:8px}
.invoice-item {width:100%;text-align:left;white-space:normal;overflow-wrap:anywhere;min-height:44px}
.invoice-item[aria-current="true"] {border-color:var(--accent)}
.invoice-item small {display:block;margin-top:4px;font-size:11px;color:var(--muted);font-weight:400}
#payment-balance {margin-top:12px}
.invoice-history summary{cursor:pointer;min-height:44px;display:flex;align-items:center;font-weight:600;font-size:14px;gap:8px}
.invoice-history summary::before{content:'▸';color:var(--accent)}
.invoice-history[open] summary::before{content:'▾'}
.invoice-history summary::-webkit-details-marker{display:none}