:root{--bg-page:#f5f7f5;--bg-chat:#fff;--bg-assistant:#f9faf9;--bg-header:#fff;--bg-input:#fff;--text-primary:#2d3e2d;--text-secondary:#6b7a6b;--text-muted:#a0b0a0;--border:#e2e8e2;--border-light:#f0f2f0;--accent:#3a7d5a;--accent-hover:#2d6a4f;--shadow:rgba(0,0,0,0.05)}@media (prefers-color-scheme:dark){:root{--bg-page:#1a1d1a;--bg-chat:#222522;--bg-assistant:#2a2d2a;--bg-header:#222522;--bg-input:#2a2d2a;--text-primary:#e0e4e0;--text-secondary:#a0a8a0;--text-muted:#707870;--border:#3a3d3a;--border-light:#333633;--accent:#5a9d7a;--accent-hover:#6aad8a;--shadow:rgba(0,0,0,0.2)}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans 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24px;align-items:center;max-width:800px;margin:0 auto}.dot{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:bounce 1.4s infinite}.dot:nth-child(2){animation-delay:.2s}.dot:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-8px)}}footer{flex-shrink:0;border-top:1px solid var(--border);background:var(--bg-chat)}.input-area{display:flex;gap:10px;padding:16px 24px;align-items:flex-end;max-width:800px;margin:0 auto;width:100%}textarea{flex:1 1;border:1px solid var(--border);border-radius:14px;padding:12px 18px;font-size:14px;resize:none;outline:none;font-family:inherit;max-height:140px;background:var(--bg-input);color:var(--text-primary)}textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(58,125,90,.15)}.send-btn{background:var(--accent);color:#fff;border:none;border-radius:12px;padding:12px 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h3{font-size:16px;color:var(--accent);margin:0}.news-close{background:none;border:none;font-size:20px;color:var(--text-muted);cursor:pointer;padding:4px 8px;border-radius:6px}.news-close:hover{background:var(--bg-assistant);color:var(--accent)}.news-popup-body{overflow-y:auto;padding:8px 0}.news-entry{display:flex;gap:12px;padding:12px 24px;border-bottom:1px solid var(--border-light)}.news-entry.highlight{background:var(--bg-assistant)}.news-entry.last{border-bottom:none}.news-date{font-size:11px;color:var(--text-muted);white-space:nowrap;min-width:70px;padding-top:2px}.news-text{font-size:13px;color:var(--text-primary);line-height:1.6}@media (max-width:600px){header{padding:0 14px}.site-subtitle{display:none}main{padding:0}.input-area,.message{padding:12px 14px}}