:root{--bg:#f1f5fc;--surface:#fff;--ink:#0b1f3f;--mute:#4d6286;--line:#d2dcee;--accent:#1b57e0;--accent-ink:#fff;--danger:#c23b3b;--stage1:#0b46c9;--stage2:#03153f;
--font:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#07101f;--surface:#101c33;--ink:#e8efff;--mute:#9aaccc;--line:#223559;--accent:#6a98ff;--accent-ink:#06122b;--danger:#ff7b7b;color-scheme:dark}}
:root[data-theme="dark"]{--bg:#07101f;--surface:#101c33;--ink:#e8efff;--mute:#9aaccc;--line:#223559;--accent:#6a98ff;--accent-ink:#06122b;--danger:#ff7b7b;color-scheme:dark}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 var(--font);min-height:100dvh;padding:18px max(16px,env(safe-area-inset-right)) calc(26px + env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left))}
main{max-width:520px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
header{display:flex;align-items:baseline;justify-content:space-between;gap:10px;flex-wrap:wrap}
h1{margin:0;font-size:1.8rem;letter-spacing:-.02em}.tag{color:var(--mute);font-size:.85rem}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;color:#000;padding:8px;z-index:9}
.sr{position:absolute;left:-999px}
#stage{position:relative;width:100%;aspect-ratio:4/5;max-height:62vh;margin:0 auto;border-radius:28px;overflow:hidden;background:radial-gradient(120% 90% at 50% 38%,var(--stage1),var(--stage2));box-shadow:0 14px 34px rgba(8,36,110,.3)}
#scene{width:100%;height:100%;display:block;touch-action:none}
#status{margin:0;text-align:center;color:var(--mute);min-height:1.5em;font-size:.95rem}
#log{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:12px;display:flex;flex-direction:column;gap:10px;max-height:30vh;overflow:auto;min-height:72px}
.msg{max-width:88%;overflow-wrap:anywhere;padding:8px 12px;border-radius:14px}
.me{align-self:flex-end;background:var(--accent);color:var(--accent-ink)}
.robo{align-self:flex-start;background:color-mix(in srgb,var(--ink) 8%,var(--surface))}
form{display:flex;gap:8px}
input[type=text],input[type=password]{flex:1;min-width:0;padding:12px;border:1.5px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink);font:inherit;width:100%}
.btn{border:0;border-radius:12px;padding:0 16px;min-height:46px;background:var(--accent);color:var(--accent-ink);font:600 .95rem var(--font);cursor:pointer}
.btn.alt{background:var(--surface);color:var(--ink);border:1.5px solid var(--line);padding:0 12px}.btn.danger{background:var(--danger);color:#fff}
.btn:disabled{opacity:.5;cursor:not-allowed}
button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #f2a900;outline-offset:2px}
.opt{display:flex;align-items:center;gap:8px;color:var(--mute);font-size:.9rem}
details{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:10px 12px}summary{cursor:pointer;font-weight:600}
.lbl{display:block;margin:10px 0 4px;font-size:.8rem;color:var(--mute)}.row{display:flex;gap:8px;margin-top:10px}
pre{white-space:pre-wrap;overflow-wrap:anywhere;font:.85rem/1.4 ui-monospace,monospace;margin:10px 0 0}
.foot{color:var(--mute);font-size:.82rem;margin:0}.noscript{padding:20px}