:root{--brand: #1f7a68;--brand-2: #0e5a4c;--bg: #f6f4ef;--ink: #2c2c2c;--ink-2: #6b665c;--line: #e6e1d6}.gate{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 28px;text-align:center}.gate-icon{font-size:64px;margin-bottom:16px}.gate-title{font-size:24px;color:var(--brand-2);line-height:1.4}.gate-desc{font-size:15px;color:var(--ink-2);line-height:1.8;margin-top:14px}.gate-desc strong{color:var(--ink)}.steps{text-align:left;margin:22px auto 0;max-width:480px;font-size:15px;line-height:1.9;color:var(--ink)}.steps li{margin:6px 0}.note{margin-top:26px;font-size:12px;color:#9a9283;line-height:1.8}.note strong{color:#c0392b}:root{--brand: #1f7a68;--brand-2: #0e5a4c;--bg: #f6f4ef;--card: #ffffff;--ink: #2c2c2c;--ink-2: #6b665c;--line: #e6e1d6}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}#app{height:100%}.page{display:flex;flex-direction:column;height:100%;max-width:720px;margin:0 auto;background:var(--bg);border-left:1px solid var(--line);border-right:1px solid var(--line)}.topbar{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;padding:18px 20px;flex-shrink:0}.brand{display:flex;align-items:center;gap:12px}.brand-dot{width:42px;height:42px;border-radius:12px;background:#ffffff29;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700}.brand-name{font-size:20px;font-weight:700;letter-spacing:.5px}.badge{font-size:12px;font-weight:500;background:#ffd76a;color:#5a4300;padding:2px 8px;border-radius:999px;margin-left:6px;vertical-align:2px}.brand-sub{font-size:12px;opacity:.85;margin-top:3px}.notice{background:#fff8e6;color:#8a6d1a;font-size:12px;padding:8px 20px;line-height:1.6;border-bottom:1px solid #f0e3bd;flex-shrink:0}.chat{flex:1;overflow-y:auto;padding:18px 16px;scroll-behavior:smooth}.chat.empty{display:flex;flex-direction:column;justify-content:center}.hero{text-align:center;padding:8px 0 4px}.hero-title{font-size:26px;font-weight:700;color:var(--brand-2)}.hero-sub{font-size:14px;color:var(--ink-2);margin-top:10px;line-height:1.7}.chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:24px 0 10px}.chip{border:1px solid var(--brand);color:var(--brand);background:#fff;font-size:14px;padding:8px 16px;border-radius:999px;cursor:pointer;transition:all .15s}.chip:hover{background:var(--brand);color:#fff}.msg-row{display:flex;gap:10px;margin-bottom:16px;align-items:flex-start}.msg-row.user{flex-direction:row-reverse}.avatar{width:34px;height:34px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600}.avatar.ai{background:var(--brand);color:#fff}.avatar.user{background:#d9d2c2;color:#5a5343}.bubble{max-width:78%;padding:12px 16px;border-radius:14px;font-size:15px;line-height:1.75;word-break:break-word}.msg-row.ai .bubble{background:#fff;border:1px solid var(--line);border-top-left-radius:4px;box-shadow:0 2px 8px #3c321e0d}.msg-row.user .bubble{background:var(--brand);color:#fff;border-top-right-radius:4px;white-space:pre-wrap}.bubble :deep(p){margin:6px 0}.bubble :deep(h1),.bubble :deep(h2),.bubble :deep(h3),.bubble :deep(h4){margin:10px 0 4px;font-size:16px;line-height:1.5}.bubble :deep(ul),.bubble :deep(ol){margin:6px 0;padding-left:22px}.bubble :deep(li){margin:3px 0}.bubble :deep(strong){font-weight:700}.bubble :deep(em){color:var(--brand-2);font-style:normal}.bubble :deep(a){color:var(--brand)}.bubble :deep(hr){border:none;border-top:1px dashed var(--line);margin:10px 0}.bubble :deep(blockquote){border-left:3px solid var(--brand);padding:2px 0 2px 10px;color:var(--ink-2);background:#f7f9f7;margin:6px 0}.bubble.typing{color:var(--ink-2);font-size:20px;letter-spacing:2px}.t1{animation:blink 1.2s infinite}.t2{animation:blink 1.2s infinite .2s}.t3{animation:blink 1.2s infinite .4s}@keyframes blink{0%,80%{opacity:.2}40%{opacity:1}}.inputbar{display:flex;gap:10px;padding:12px 16px calc(12px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid var(--line);flex-shrink:0;align-items:flex-end}.input{flex:1;resize:none;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-size:15px;line-height:1.5;font-family:inherit;max-height:120px;outline:none;background:#fbfaf7;color:var(--ink)}.input:focus{border-color:var(--brand);background:#fff}.send{border:none;background:var(--brand);color:#fff;font-size:15px;padding:10px 20px;border-radius:10px;cursor:pointer;transition:opacity .15s;flex-shrink:0}.send:disabled{opacity:.45;cursor:not-allowed}