.mt-chat-launch{position:fixed;right:20px;bottom:calc(20px + env(safe-area-inset-bottom,0px));z-index:90;border:1px solid #6cb8ff;border-radius:30px;background:#165ab5;color:#fff;padding:14px 20px;font:700 16px/1.2 system-ui,sans-serif;box-shadow:0 8px 30px #0006;cursor:pointer;min-height:48px}
.mt-chat-launch[hidden]{display:none}
.mt-chat{padding:0;border:1px solid #456180;border-radius:18px;background:#091426;color:#f0f5ff;width:420px;max-width:calc(100vw - 24px);height:620px;max-height:calc(var(--mt-visible-height,100dvh) - 32px);margin:auto;font:16px/1.5 system-ui,sans-serif;box-shadow:0 20px 80px #0008;overflow:hidden}
.mt-chat[open]{display:flex;flex-direction:column}
.mt-chat::backdrop{background:#0208179c}
.mt-chat-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 18px;background:#102440;flex-shrink:0}
.mt-chat-head h2{margin:0;font:700 20px/1.3 system-ui,sans-serif;letter-spacing:0}
.mt-chat-head p{font-size:13px;margin:3px 0 0;color:#b8cbe3}
.mt-chat button{touch-action:manipulation;user-select:none;-webkit-user-select:none;cursor:pointer;font:600 16px/1.2 system-ui,sans-serif;min-height:44px}
.mt-chat-close{border:1px solid #537294;background:transparent;color:#fff;border-radius:8px;padding:8px 12px}
.mt-chat-notice{margin:0;padding:10px 18px;font-size:12px;line-height:1.5;color:#bfcee0;border-bottom:1px solid #263b55;flex-shrink:0}
.mt-chat a{color:#8cc8ff;text-decoration:underline;text-underline-offset:3px}
.mt-chat-log{padding:14px 16px;overflow-y:auto;overscroll-behavior:contain;flex:1;min-height:60px}
.mt-chat-message{font-size:15px;line-height:1.55;white-space:pre-wrap;overflow-wrap:anywhere;margin:0 0 12px;padding:12px 14px;border-radius:12px;background:#182b45;max-width:95%;color:#edf5ff}
.mt-chat-message strong{display:block;font-size:12px;line-height:1.5;color:#acccf0;margin-bottom:4px}
.mt-chat-user{margin-left:auto;background:#143e70}
.mt-chat-form{padding:0 16px 12px;margin:0;flex-shrink:0}
.mt-chat-form label{display:block;font-size:13px;margin-bottom:4px;color:#bfcee0}
.mt-chat-compose{display:flex;gap:8px;align-items:stretch}
.mt-chat textarea{resize:none;min-width:0;width:100%;height:64px;max-height:100px;border:1px solid #587393;border-radius:8px;padding:10px;background:#020b18;color:#fff;font:16px/1.4 system-ui,sans-serif;box-sizing:border-box}
.mt-chat-send{background:#226ed0;border:1px solid #69aaff;color:#fff;border-radius:8px;padding:8px 14px}
.mt-chat-send:disabled{opacity:.6;cursor:wait}
.mt-chat-status{min-height:18px;font-size:12px;color:#b8cbe3;margin:5px 0 0}
.mt-chat-contact{margin:0;padding:8px 16px calc(12px + env(safe-area-inset-bottom,0px));border-top:1px solid #263b55;font-size:12px;display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0}
.mt-chat button:focus-visible,.mt-chat a:focus-visible,.mt-chat textarea:focus-visible,.mt-chat-launch:focus-visible{outline:3px solid #ffbc58;outline-offset:3px}
.mt-chat button:active,.mt-chat-launch:active{filter:brightness(.85)}
.site-footer{padding-bottom:90px}
@media(hover:hover) and (pointer:fine){.mt-chat-launch:hover,.mt-chat-send:hover{background:#2878df}}
@media(max-width:600px){.mt-chat{width:100%;max-width:100%;height:var(--mt-visible-height,100dvh);max-height:var(--mt-visible-height,100dvh);border-radius:0;border:0;position:fixed;top:var(--mt-visible-top,0px);bottom:auto;margin:0;box-sizing:border-box}.mt-chat-head{padding-top:calc(12px + env(safe-area-inset-top,0px))}.mt-chat-launch{right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px));padding:13px 18px}.mt-chat-notice{padding:8px 16px}}