:root{--bg-0:#0a0a0a;--bg-1:#111;--bg-2:#1a1a1a;--card:#ffffff0d;--card-strong:#ffffff17;--line:#ffffff1a;--line-strong:#ffffff38;--text:#f5f5f5;--text-2:#a3a3a3;--text-3:#666;--accent:#fff;--accent-2:#d4d4d4;--accent-glow:#ffffff38;--good:#f5f5f5;--bad:#f5f5f5;--gold:#f5f5f5;--radius:20px;--font:"Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif}*{box-sizing:border-box;margin:0;padding:0}html{background-color:#0a0a0a;min-height:100%}html,body,#root{height:100%}body{font-family:var(--font);color:var(--text);-webkit-font-smoothing:antialiased;overscroll-behavior:none;-webkit-tap-highlight-color:transparent;background-color:#0a0a0a;background-image:radial-gradient(1200px 500px at 50% -10%,#ffffff0f,#0000 60%);font-weight:300}::selection{background:var(--accent-glow)}button{font:inherit;cursor:pointer;color:inherit;background:0 0;border:none}button:active{transform:scale(.97)}input,button{font-family:inherit}.app{flex-direction:column;max-width:520px;height:100%;margin:0 auto;display:flex;position:relative}.header{z-index:20;border-bottom:1px solid var(--line);background:0 0;justify-content:space-between;align-items:center;gap:10px;padding:14px 18px;display:flex;position:sticky;top:0}.header:before{content:"";z-index:0;-webkit-backdrop-filter:blur(16px);background:#0a0a0ac7;position:absolute;inset:0}.header>*{z-index:1;position:relative}.brand{align-items:center;gap:10px;min-width:0;display:flex}.brand-logo{width:30px;height:30px;filter:drop-shadow(0 0 8px var(--accent-glow));flex-shrink:0}.brand-name{letter-spacing:-.03em;font-size:17px;font-weight:500}.brand-name em{background:linear-gradient(90deg,#fff,#8f8f8f);color:#0000;-webkit-background-clip:text;background-clip:text;font-style:normal}.brand-sub{color:var(--text-3);margin-top:1px;font-size:10px}.balance{flex-shrink:0;gap:6px;display:flex}.chip{border:1px solid var(--line);background:var(--card);white-space:nowrap;border-radius:999px;align-items:center;gap:5px;padding:7px 11px;font-size:12px;font-weight:500;display:inline-flex}.chip-free{color:var(--text);border-color:var(--line-strong);background:var(--card)}.chip-credit{color:var(--text);border-color:var(--line-strong);background:var(--card-strong)}.chip-btn{color:var(--text);background:var(--card-strong)}.chip-addr{color:var(--text-2);font-weight:500}.demo-banner{text-align:center;color:var(--text-2);background:var(--card);border-bottom:1px solid var(--line);padding:9px 16px;font-size:12px;font-weight:500}.chat{scrollbar-width:none;flex-direction:column;flex:1;gap:12px;padding:20px 16px 12px;display:flex;overflow-y:auto}.chat::-webkit-scrollbar{display:none}.msg{gap:8px;animation:.25s both rise;display:flex}@keyframes rise{0%{opacity:0;transform:translateY(8px)}}.msg-user{justify-content:flex-end}.avatar{object-fit:contain;width:28px;height:28px;filter:drop-shadow(0 0 6px var(--accent-glow));border-radius:50%;flex-shrink:0;margin-top:2px}.bubble{white-space:pre-wrap;word-break:break-word;max-width:82%;padding:11px 15px;font-size:15px;line-height:1.55}.msg-user .bubble{color:#0a0a0a;background:#f5f5f5;border-radius:20px 20px 6px;box-shadow:0 4px 20px #ffffff14}.msg-assistant .bubble{background:var(--card);border:1px solid var(--line);color:var(--text);white-space:normal;border-radius:20px 20px 20px 6px}.markdown-body{word-break:break-word}.markdown-body p{margin:0 0 8px}.markdown-body p:last-child{margin-bottom:0}.markdown-body strong{color:#fff;font-weight:700}.markdown-body em{font-style:italic}.markdown-body ul,.markdown-body ol{margin:6px 0 8px 18px;padding:0}.markdown-body li{margin-bottom:4px}.markdown-body code{background:#ffffff1f;border-radius:4px;padding:2px 5px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.88em}.markdown-body pre{border:1px solid var(--line);background:#0006;border-radius:8px;margin:8px 0;padding:10px 12px;overflow-x:auto}.markdown-body pre code{background:0 0;padding:0}.markdown-body a{color:var(--accent);text-decoration:underline}.caret{background:var(--accent);vertical-align:text-bottom;border-radius:2px;width:8px;height:16px;margin-left:2px;animation:.9s infinite blink;display:inline-block}.thinking{gap:5px;padding:6px 2px;display:inline-flex}.thinking i{background:var(--text-3);border-radius:50%;width:7px;height:7px;animation:1.2s infinite bounce}.thinking i:nth-child(2){animation-delay:.15s}.thinking i:nth-child(3){animation-delay:.3s}@keyframes bounce{0%,60%,to{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-5px)}}.error-bar{color:var(--text);border:1px solid var(--line-strong);background:#ffffff12;border-radius:14px;margin:0 16px 6px;padding:11px 14px;font-size:13px;font-weight:500;line-height:1.4}.welcome{text-align:center;margin:auto 0;padding:16px 6px;animation:.4s both rise}.hero-logo{width:84px;height:84px;filter:drop-shadow(0 0 40px var(--accent-glow));margin:0 auto 22px;animation:3.2s ease-in-out infinite pulse;display:block}@keyframes pulse{0%,to{filter:drop-shadow(0 0 24px #ffffff1f)}50%{filter:drop-shadow(0 0 48px #ffffff47)}}.welcome h1{letter-spacing:-.03em;margin-bottom:10px;font-size:26px;font-weight:500}.welcome h1 em{background:linear-gradient(90deg,#fff,#8f8f8f);color:#0000;-webkit-background-clip:text;background-clip:text;font-style:normal}.welcome p{color:var(--text-2);max-width:32ch;margin:0 auto 26px;font-size:14.5px;line-height:1.6}.welcome p strong{color:var(--text);font-weight:500}.presets{text-align:left;grid-template-columns:1fr 1fr;gap:10px;display:grid}.preset{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px 14px;transition:border-color .15s,background .15s,transform .1s}.preset:hover{border-color:var(--line-strong);background:var(--card-strong)}.preset:active{border-color:var(--accent);transform:scale(.97)}.preset-title{letter-spacing:.01em;text-align:center;font-size:14px;font-weight:500;display:block}.composer{padding:12px 16px calc(14px + env(safe-area-inset-bottom));background:linear-gradient(to top, var(--bg-0) 70%, transparent);align-items:center;gap:8px;display:flex}.composer-input{background:var(--bg-2);border:1px solid var(--line);border-radius:26px;flex:1;align-items:center;padding:4px 4px 4px 18px;transition:border-color .15s;display:flex}.composer-input:focus-within{border-color:var(--line-strong);box-shadow:0 0 0 3px #ffffff14}.composer-input input{color:var(--text);font-size:15px;font-weight:inherit;background:0 0;border:none;outline:none;flex:1;min-width:0;padding:13px 0}.composer-input input::placeholder{color:var(--text-3)}.send{width:44px;height:44px;box-shadow:0 4px 16px var(--accent-glow);background:#f5f5f5;border-radius:50%;flex-shrink:0;place-items:center;transition:opacity .15s,transform .1s;display:grid}.send svg{fill:none;stroke:#0a0a0a;stroke-width:2.4px;stroke-linecap:round;stroke-linejoin:round;width:17px;height:17px}.send:disabled{opacity:.35;box-shadow:none}.sheet-backdrop{z-index:50;background:#000000c7;justify-content:center;align-items:flex-end;animation:.2s both fade;display:flex;position:fixed;inset:0}.sheet-backdrop:before{content:"";z-index:0;-webkit-backdrop-filter:blur(6px);position:absolute;inset:0}.sheet-backdrop>*{z-index:1;position:relative}@keyframes fade{0%{opacity:0}}.sheet{background:var(--bg-1);border:1px solid var(--line);width:100%;max-width:520px;padding:14px 22px calc(30px + env(safe-area-inset-bottom));text-align:center;border-bottom:none;border-radius:28px 28px 0 0;animation:.28s cubic-bezier(.16,1,.3,1) both slide-up}@keyframes slide-up{0%{transform:translateY(60%)}}.sheet-handle{background:var(--line-strong);border-radius:2px;width:42px;height:4px;margin:0 auto 20px}.sheet h2{letter-spacing:-.02em;margin-bottom:8px;font-size:20px;font-weight:500}.sheet-sub{color:var(--text-2);margin-bottom:22px;font-size:13.5px;line-height:1.55}.sheet-warn{color:#ffb822;text-align:center;background:#ffaa001a;border:1px solid #ffaa004d;border-radius:12px;margin-bottom:18px;padding:10px 14px;font-size:13px;line-height:1.45}.packs{gap:10px;margin-bottom:16px;display:flex}.pack{border-radius:var(--radius);background:var(--card);border:1px solid var(--line);flex:1;padding:20px 12px 16px;transition:border-color .15s,background .15s,transform .1s;position:relative}.pack:active{transform:scale(.96)}.pack-best{border-color:var(--accent);background:#ffffff17}.pack-badge{letter-spacing:.08em;text-transform:uppercase;color:#0a0a0a;white-space:nowrap;background:#f5f5f5;border-radius:999px;padding:4px 10px;font-size:10px;font-weight:500;position:absolute;top:-9px;left:50%;transform:translate(-50%)}.pack-price{letter-spacing:-.02em;font-size:24px;font-weight:500;display:block}.pack-unit{color:var(--text-3);font-size:12px;font-weight:500}.pack-credits{color:var(--text);margin-top:8px;font-size:13px;font-weight:500;display:block}.sheet-note{color:var(--text-3);justify-content:center;align-items:center;gap:6px;font-size:12px;display:flex}.sheet-status{flex-direction:column;align-items:center;gap:12px;padding:44px 12px;font-size:16px;font-weight:500;display:flex}.sheet-ok,.sheet-fail{color:var(--text)}.sheet-fail small{color:var(--text-2);font-size:12.5px;font-weight:300;line-height:1.5}.sheet-fail button{background:var(--card-strong);border:1px solid var(--line-strong);border-radius:999px;margin-top:10px;padding:10px 28px;font-weight:500}.topup-float{bottom:calc(92px + env(safe-area-inset-bottom));color:#0a0a0a;box-shadow:0 8px 30px var(--accent-glow);z-index:40;background:#f5f5f5;border-radius:999px;padding:12px 24px;font-size:14px;font-weight:500;animation:.25s both rise;position:fixed;left:50%;transform:translate(-50%)}
