:root{color:#243b32;font-synthesis:none;text-rendering:optimizelegibility;--bg:#f7f8f4;--surface:#fff;--ink:#243b32;--muted:#738078;--line:#e3e8e1;--green:#176650;--green-hover:#10543f;--mine:#e0ede3;--other:#fff;--soft:#eff3ec;--danger:#9b3535;--danger-bg:#fff0ee;background:#eef1ec;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}button,input,textarea{-webkit-tap-highlight-color:transparent}button:focus-visible,input:focus-visible,textarea:focus-visible{outline-offset:3px;outline:3px solid #8cb9a2}button{border:0}svg{flex-shrink:0;width:23px;height:23px;display:block}.loading-screen{min-height:100dvh;color:var(--muted);place-items:center;display:grid}.login-page{background:radial-gradient(ellipse at 20% 0%, #dfe9df 0, transparent 55%), var(--bg);flex-direction:column;justify-content:center;align-items:center;min-height:100dvh;padding:32px 24px;display:flex}.login-card{width:100%;max-width:400px}.brand-icon{background:var(--green);color:#fff;border-radius:19px;place-items:center;width:60px;height:60px;margin-bottom:36px;display:grid;box-shadow:0 8px 25px #17665016}.brand-icon svg{width:30px;height:30px}.eyebrow{color:var(--muted);letter-spacing:1.7px;margin:0 0 12px;font-size:10px;font-weight:700}.login-card h1{letter-spacing:-1.3px;margin:0 0 14px;font-size:clamp(28px,6vw,34px);font-weight:600}.subtitle{color:var(--muted);max-width:310px;margin:0 0 35px;font-size:14px;line-height:1.65}.login-card label{margin-bottom:8px;font-size:12px;font-weight:600;display:block}.login-card input{border:1px solid var(--line);background:var(--surface);width:100%;color:var(--ink);border-radius:10px;min-height:48px;margin-bottom:22px;padding:13px 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0;border-radius:8px;padding:10px;font-size:12px}.quiet:hover{background:var(--soft)}.logout{white-space:nowrap}.notification-note{color:var(--muted);font-size:10px}.messages{overscroll-behavior:contain;scroll-behavior:auto;flex:1;min-height:0;padding:18px 20px 24px;overflow-y:auto}.history-control{text-align:center;margin-bottom:14px}.empty-chat{text-align:center;flex-direction:column;justify-content:center;align-items:center;height:100%;min-height:200px;display:flex}.empty-symbol{color:#8baf91;margin-bottom:14px;font-size:47px}.empty-chat h2{letter-spacing:-.5px;margin:0 0 12px;font-size:20px;font-weight:500}.empty-chat p{color:var(--muted);margin:0;font-size:13px;line-height:1.8}.date-separator{justify-content:center;align-items:center;gap:16px;margin:24px 0;display:flex}.date-separator:before,.date-separator:after{content:"";background:var(--line);flex:1;max-width:80px;height:1px}.date-separator span{color:var(--muted);white-space:nowrap;font-size:10px}.message-row{margin-bottom:8px;display:flex}.message-row.mine{justify-content:flex-end}.message-bubble{background:var(--other);border:1px solid var(--line);border-radius:15px 15px 15px 4px;max-width:82%;padding:11px 14px 8px;box-shadow:0 1px 2px #243b3206}.mine .message-bubble{background:var(--mine);border-color:#0000;border-radius:15px 15px 4px}.message-text{white-space:pre-wrap;overflow-wrap:anywhere;margin:0;font-size:14px;line-height:1.6}.message-bubble time{text-align:right;color:var(--muted);margin-top:5px;font-size:9px;display:block}.with-image{padding:5px 5px 7px}.with-image time{padding-right:5px}.image-button{background:var(--soft);border-radius:11px;padding:0;display:block;overflow:hidden}.image-button 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8px;font-size:23px}.new-messages-wrap{z-index:1;justify-content:center;height:0;display:flex;position:relative}.new-messages{background:var(--green);color:#fff;border-radius:20px;padding:10px 16px;font-size:12px;position:absolute;bottom:16px;box-shadow:0 3px 12px #0002}.image-viewer{background:0 0;border:none;width:100vw;max-width:100vw;height:100dvh;max-height:100dvh;padding:0}.image-viewer[open]{justify-content:center;align-items:center;display:flex}.image-viewer::backdrop{background:#07130fef}.image-viewer img{object-fit:contain;max-width:94vw;max-height:88dvh}.viewer-close{color:#fff;z-index:2;background:#fff2;border-radius:50%;width:46px;height:46px;font-size:30px;position:fixed;top:16px;right:20px}@media (width>=720px){.chat-shell{border:1px solid var(--line);border-radius:20px;height:calc(100dvh - 56px);margin:28px auto;overflow:hidden;box-shadow:0 20px 65px #183d2d0a}.chat-header{padding:22px 30px}.messages{padding:16px 38px 28px}.message-bubble{max-width:68%}.composer-area{padding:18px 26px 16px}.composer textarea{font-size:14px}}@media (width<=450px){.chat-header{padding:16px}.header-actions{gap:1px}.notification-note,.composer-hint span:last-child,.send-button span{display:none}.send-button{padding:0 11px}}@media (prefers-color-scheme:dark){:root{color:#e1e9e2;--bg:#151f19;--surface:#1b2820;--ink:#e1e9e2;--muted:#9cafa0;--line:#2b3a30;--green:#388261;--green-hover:#469971;--mine:#294937;--other:#233127;--soft:#263a2d;--danger:#ffb4a9;--danger-bg:#452821;background:#101915}.login-page{background:radial-gradient(ellipse at 20% 0%, #213b2b 0, transparent 55%), var(--bg)}.avatar{color:#acdab4}}