:root{--teal:#0095a3;--teal-deep:#00686a;--navy:#202d3d;--blush:#e7cbc5;--sage:#a1beb8;--cloud:#f2f1f1;--red:#950b0b;--slate:#676769;--silver:#b7b9b8;--bg:#ffffff;--text:var(--navy);--muted:var(--slate);--line:#e3e4e4;--radius:14px;--shadow:0 1px 2px rgba(32,45,61,0.06),0 4px 16px rgba(32,45,61,0.06)}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--cloud);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;font-size:16px;line-height:1.45}button,input,textarea{font:inherit;color:inherit}.shell{align-items:center}.frame,.shell{min-height:100dvh;display:flex;flex-direction:column}.frame{width:100%;max-width:480px;background:var(--bg);padding:16px 16px 32px}@media (min-width:520px){.frame{min-height:auto;margin:24px 0;border-radius:20px;box-shadow:var(--shadow)}}.topbar{display:flex;align-items:center;justify-content:space-between;min-height:44px;margin-bottom:8px}.topbar img{height:42px;width:auto}.back{background:none;border:none;padding:8px 10px 8px 0;color:var(--teal-deep);font-weight:600;font-size:15px;cursor:pointer}.step{color:var(--muted);font-size:13px}h1{font-size:26px;line-height:1.15;margin:8px 0 6px;letter-spacing:-.01em}h2{font-size:20px;line-height:1.2;margin:6px 0 4px}.lead{color:var(--muted);margin:0 0 18px;font-size:15px}.label{display:block;font-weight:650;font-size:14px;margin:18px 0 8px}.label small{color:var(--muted);font-weight:400}.cards{display:grid;grid-gap:10px;gap:10px;margin-top:6px}.card{display:flex;align-items:center;gap:14px;width:100%;text-align:left;background:var(--bg);border:1.5px solid var(--line);border-radius:var(--radius);padding:14px;cursor:pointer;transition:border-color .12s,transform .08s}.card:active{transform:scale(.99)}.card:hover{border-color:var(--teal)}.card .ico{width:44px;height:44px;border-radius:12px;background:var(--cloud);display:grid;place-items:center;font-size:22px;flex:none}.card .t{font-weight:650;font-size:16px}.card .b{color:var(--muted);font-size:13.5px;margin-top:2px}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{border:1.5px solid var(--silver);background:var(--bg);border-radius:999px;padding:9px 14px;font-size:14.5px;cursor:pointer;line-height:1.2;color:var(--navy)}.chip[aria-pressed=true]{background:var(--teal);border-color:var(--teal);color:#fff;font-weight:600}.input,.textarea{width:100%;border:1.5px solid var(--silver);border-radius:12px;padding:12px 14px;font-size:16px;background:var(--bg);outline:none}.input:focus,.textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(0,149,163,.15)}.textarea{min-height:84px;resize:vertical}.hint{color:var(--muted);font-size:12.5px;margin-top:6px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;border:none;border-radius:12px;padding:14px 18px;font-size:16px;font-weight:650;cursor:pointer;background:var(--teal);color:#fff;transition:background .12s,transform .08s}.btn:active{transform:scale(.99)}.btn:hover{background:#00879a}.btn:disabled{background:var(--silver);cursor:not-allowed}.btn.secondary{background:var(--bg);color:var(--teal-deep);border:1.5px solid var(--teal)}.btn.secondary:hover{background:#f0fafb}.btn.ghost{background:transparent;color:var(--teal-deep);border:1.5px solid var(--line)}.btn.ghost:hover{background:var(--cloud)}.btn.small{width:auto;padding:10px 14px;font-size:14px;border-radius:999px}.sticky{position:-webkit-sticky;position:sticky;bottom:0;padding-top:14px;margin-top:auto;background:linear-gradient(180deg,rgba(255,255,255,0),#fff 40%)}.row{display:flex;gap:8px;flex-wrap:wrap}.output{background:var(--cloud);border-radius:var(--radius);padding:16px;white-space:pre-wrap;font-size:15.5px;line-height:1.5;min-height:140px;margin-top:8px}.output.streaming:after{content:"▍";color:var(--teal);animation:blink .9s steps(2) infinite}@keyframes blink{50%{opacity:0}}.tip{display:flex;gap:10px;align-items:flex-start;background:#fbf3f1;border-left:3px solid var(--blush);border-radius:10px;padding:12px 14px;font-size:14px;margin-top:14px}.tip b{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--teal-deep);margin-bottom:3px}.error{color:var(--red);background:#fdf1f1;border-radius:10px;padding:10px 12px;margin-top:10px}.error,.toast{font-size:14px}.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--navy);color:#fff;padding:10px 16px;border-radius:999px;box-shadow:var(--shadow);z-index:10}details.prompt{margin-top:16px;border:1.5px solid var(--line);border-radius:12px;padding:10px 14px;font-size:14px}details.prompt summary{cursor:pointer;font-weight:600;color:var(--teal-deep)}details.prompt pre{white-space:pre-wrap;background:var(--cloud);border-radius:8px;padding:10px;font-size:12.5px;margin:10px 0 0;line-height:1.45}.hero{text-align:center;padding:10px 0 6px}.hero img{height:64px;width:auto;margin-bottom:6px}.pill{display:inline-block;background:var(--cloud);color:var(--teal-deep);border-radius:999px;padding:5px 12px;font-size:12.5px;font-weight:600;letter-spacing:.02em}.code-row{display:flex;gap:8px;margin-top:8px}.code-row .input{text-align:center;letter-spacing:.3em;font-size:20px;font-weight:650}.foot{text-align:center;color:var(--muted);font-size:12px;margin-top:22px}.foot a{color:var(--teal-deep)}.upload{border:2px dashed var(--silver);border-radius:var(--radius);padding:18px 14px;text-align:center;cursor:pointer;background:var(--bg)}.upload:hover{border-color:var(--teal)}.upload img{max-width:100%;max-height:220px;border-radius:10px;margin-top:8px}.upload input{display:none}.seg{display:grid;grid-template-columns:1fr 1fr;grid-gap:6px;gap:6px;background:var(--cloud);border-radius:12px;padding:4px;margin-top:6px}.seg button{border:none;background:transparent;border-radius:9px;padding:10px 8px;font-weight:600;font-size:14px;color:var(--muted);cursor:pointer}.seg button[aria-pressed=true]{background:var(--bg);color:var(--navy);box-shadow:var(--shadow)}