:root{--background:#fff;--foreground:#161616;--muted:#6b7280;--border:#e5e7eb;--card:#fafafa;--red:#d5001c;--red-dark:#b50018;--user:#f3f4f6;--assistant:#fff5f5;--shadow:0 8px 30px #0000000f;--radius:16px}*{box-sizing:border-box}html,body{background:var(--background);color:var(--foreground);margin:0;padding:0;font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}.page-shell{flex-direction:column;min-height:100vh;display:flex}.main-shell{flex-direction:column;flex:1;width:min(1100px,100% - 32px);margin:0 auto;display:flex}.header{justify-content:flex-end;align-items:center;padding:24px 0 8px;display:flex}.logo-wrap img{width:auto;height:44px;display:block}.hero{text-align:center;padding:40px 0 24px}.hero h1{margin:0 0 16px;font-size:clamp(2rem,4vw,3.4rem);line-height:1.05}.hero p{max-width:760px;color:var(--muted);margin:0 auto 28px;font-size:1.05rem;line-height:1.6}.start-button,.secondary-button,.ghost-button,.send-button{cursor:pointer;border:0;border-radius:999px;padding:14px 22px;transition:all .2s}.start-button,.send-button{background:var(--red);color:#fff}.start-button:hover,.send-button:hover{background:var(--red-dark)}.secondary-button{color:#fff;background:#111827}.secondary-button:hover{background:#0f172a}.ghost-button{color:var(--foreground);border:1px solid var(--border);background:#fff}.ghost-button:hover{background:#f9fafb}.chat-shell{border:1px solid var(--border);box-shadow:var(--shadow);background:#fff;border-radius:24px;flex-direction:column;min-height:620px;margin-bottom:32px;display:flex;overflow:hidden}.chat-header{border-bottom:1px solid var(--border);background:#fff;padding:18px 22px}.chat-header strong{margin-bottom:6px;display:block}.chat-header span{color:var(--muted);font-size:.95rem}.message-list{background:linear-gradient(#fff,#fcfcfc);flex:1;padding:20px;overflow-y:auto}.message-row{margin-bottom:14px;display:flex}.message-row.user{justify-content:flex-end}.message-bubble{white-space:pre-wrap;border-radius:18px;max-width:min(760px,86%);padding:14px 16px;line-height:1.55}.message-row.assistant .message-bubble{background:var(--assistant);border:1px solid #fee2e2}.message-row.user .message-bubble{background:var(--user);border:1px solid var(--border)}.message-meta{color:var(--muted);margin-top:6px;font-size:.8rem}.option-row{flex-wrap:wrap;gap:10px;margin:12px 0 18px;display:flex}.chat-input-wrap{border-top:1px solid var(--border);background:#fff;padding:16px}.chat-form{gap:12px;display:flex}.chat-input{border:1px solid var(--border);border-radius:16px;outline:none;flex:1;min-height:52px;padding:14px 16px}.chat-input:focus{border-color:#c4c7cf}.helper-text{color:var(--muted);margin-top:10px;font-size:.88rem}.footer{width:min(1100px,100% - 32px);color:var(--muted);margin:0 auto;padding:0 0 28px;font-size:.92rem}.footer-links{flex-wrap:wrap;gap:14px;margin-bottom:10px;display:flex}.static-page{width:min(820px,100% - 32px);margin:60px auto;line-height:1.7}.static-page h1{margin-bottom:20px}.summary-card{border:1px solid var(--border);background:var(--card);border-radius:18px;margin-top:12px;padding:16px}.summary-card strong{margin-bottom:10px;display:block}.summary-grid{grid-template-columns:180px 1fr;gap:10px 14px;display:grid}.summary-grid .label{color:var(--muted);font-weight:600}.loading-dots{align-items:center;gap:4px;display:inline-flex}.loading-dots span{background:var(--muted);border-radius:999px;width:6px;height:6px;animation:1.2s ease-in-out infinite blink;display:inline-block}.loading-dots span:nth-child(2){animation-delay:.15s}.loading-dots span:nth-child(3){animation-delay:.3s}@keyframes blink{0%,80%,to{opacity:.25}40%{opacity:1}}@media (max-width:700px){.summary-grid{grid-template-columns:1fr}.chat-form{flex-direction:column}.send-button{width:100%}}