:root{--bg: oklch(11% .02 280);--bg-2: oklch(15% .025 280);--bg-3: oklch(19% .03 280);--text: oklch(96% .005 280);--text-muted: oklch(70% .01 280);--accent: oklch(72% .18 250);--accent-2: oklch(64% .22 250);--border: oklch(25% .015 280);--red: oklch(70% .2 25);--green: oklch(72% .18 145);--font-sans: ui-sans-serif, system-ui, -apple-system, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;--font-mono: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, monospace}*{box-sizing:border-box}html,body{margin:0;padding:0}html{background:var(--bg);color:var(--text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;font-size:16px;line-height:1.55}body{min-height:100vh;background-image:radial-gradient(ellipse 80% 50% at 50% -10%,oklch(40% .1 250 / .25),transparent),radial-gradient(ellipse 60% 40% at 50% 110%,oklch(30% .12 280 / .18),transparent)}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-2)}::selection{background:var(--accent);color:var(--bg)}.shell{min-height:100vh;display:flex;flex-direction:column}.container{max-width:1100px;margin:0 auto;padding:0 24px;width:100%}.header{padding:18px 0;border-bottom:1px solid var(--border)}.header-inner{display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px}.brand-mark{width:28px;height:28px;border-radius:8px;background:var(--accent);flex:none}.brand-by{color:var(--text-muted);font-weight:400;font-size:13px;margin-left:6px}.hero{padding:40px 0 28px;text-align:center}.hero h1{margin:0 0 14px;font-size:clamp(28px,4vw,44px);font-weight:800;letter-spacing:-.02em;line-height:1.15}.hero h1 .red{color:var(--red)}.hero p{color:var(--text-muted);font-size:16px;max-width:600px;margin:0 auto}.badges{display:flex;justify-content:center;gap:8px;margin-top:18px;flex-wrap:wrap}.badge{background:var(--bg-2);border:1px solid var(--border);color:var(--text-muted);padding:4px 12px;border-radius:999px;font-size:12px}.badge.green:before{content:"●";color:var(--green);margin-right:6px}.chat-card{background:var(--bg-2);border:1px solid var(--border);border-radius:16px;margin:0 auto 40px;display:flex;flex-direction:column;min-height:500px;max-height:calc(100vh - 120px)}.chat-head{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px}.chat-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--accent),oklch(60% .2 320));display:grid;place-items:center;font-weight:700;color:var(--bg)}.chat-title{display:flex;flex-direction:column;gap:2px}.chat-title strong{font-size:15px}.chat-title small{color:var(--text-muted);font-size:12px}.chat-stream{flex:1;overflow-y:auto;padding:18px 20px;display:flex;flex-direction:column;gap:14px;scrollbar-width:thin}.chat-stream::-webkit-scrollbar{width:6px}.chat-stream::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}.msg{display:flex;gap:10px;max-width:92%}.msg.user{align-self:flex-end;flex-direction:row-reverse}.msg-body{background:var(--bg-3);border:1px solid var(--border);padding:10px 14px;border-radius:14px;white-space:pre-wrap;word-wrap:break-word;font-size:14px;line-height:1.6}.msg.user .msg-body{background:var(--accent);color:var(--bg);border-color:var(--accent)}.msg .who{font-size:11px;color:var(--text-muted);margin-bottom:4px;text-transform:uppercase;letter-spacing:.05em}.msg-pending .msg-body{font-style:italic;color:var(--text-muted)}.chat-input-row{padding:14px 16px;border-top:1px solid var(--border);display:flex;gap:10px;align-items:flex-end}.chat-input{flex:1;background:var(--bg-3);border:1px solid var(--border);color:var(--text);border-radius:10px;padding:10px 14px;font:inherit;font-size:14px;resize:none;min-height:44px;max-height:160px;outline:none;transition:border-color .15s}.chat-input:focus{border-color:var(--accent)}.btn{background:var(--accent);color:var(--bg);font-weight:600;border:0;border-radius:10px;padding:10px 18px;cursor:pointer;font:inherit;font-size:14px;transition:background .15s}.btn:hover:not(:disabled){background:var(--accent-2)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.secondary{background:var(--bg-3);color:var(--text);border:1px solid var(--border)}.prompt-chips{padding:0 20px 16px;display:flex;flex-wrap:wrap;gap:8px;border-bottom:1px solid var(--border)}.prompt-chips .label{font-size:11px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;width:100%;margin-bottom:4px}.chip{background:var(--bg-3);border:1px solid var(--border);color:var(--text-muted);padding:6px 12px;border-radius:999px;font-size:12px;cursor:pointer;transition:all .15s}.chip:hover{color:var(--text);border-color:var(--accent)}.footer{padding:24px 0 36px;text-align:center;color:var(--text-muted);font-size:13px;border-top:1px solid var(--border);margin-top:auto}.footer a{color:var(--text-muted)}.footer a:hover{color:var(--accent)}.flash{padding:10px 14px;border-radius:8px;font-size:13px;margin:8px 0}.flash.err{background:oklch(30% .15 25);color:var(--text);border:1px solid var(--red)}