:root{--bg: #f4efe8;--bg-raise: #fbf8f4;--bg-card: #ffffff;--line: rgba(70, 52, 36, .12);--gold: #b4532a;--gold-dim: #c56a42;--ink: #2a231c;--muted: #7a7066;--danger: #c4473a;--user: #f3e0d2;--bot: #ffffff;--shadow: 0 10px 28px rgba(80, 52, 32, .08);font-family:Noto Sans SC,system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55;font-weight:400;color-scheme:light}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{background:radial-gradient(1100px 520px at 8% -8%,rgba(232,168,120,.22),transparent 52%),radial-gradient(900px 480px at 100% 0%,rgba(210,186,160,.2),transparent 48%),var(--bg)}button,input,textarea,select{font:inherit;color:inherit}a{color:var(--gold);text-decoration:none}h1,h2,.serif{font-family:"Noto Serif SC",Songti SC,serif;font-weight:600;letter-spacing:.02em}.page{max-width:1080px;margin:0 auto;padding:28px 20px 80px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:28px}.brand{font-family:"Noto Serif SC",serif;font-size:22px;margin:0}.muted{color:var(--muted);font-size:13px}.err{color:var(--danger);font-size:13px;min-height:1.2em}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid var(--line);background:var(--bg-card);color:var(--ink);padding:10px 16px;border-radius:999px;cursor:pointer;transition:.15s ease}.btn:hover{border-color:var(--gold-dim)}.btn.primary{background:#c45c38;color:#fffaf6;border-color:transparent;font-weight:600}.btn.primary:hover{background:#b4532a}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.ghost{background:transparent}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.field span{font-size:12px;color:var(--muted)}.field input,.field textarea,.field select{background:var(--bg-raise);border:1px solid var(--line);border-radius:12px;padding:10px 12px;outline:none}.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--gold-dim);background:#fff}.field textarea{min-height:88px;resize:vertical}.auth-card{width:min(420px,100%);margin:8vh auto;background:var(--bg-card);border:1px solid var(--line);border-radius:24px;padding:32px 28px;box-shadow:var(--shadow)}.tabs{display:flex;gap:8px;margin-bottom:18px}.tabs button[aria-selected=true]{border-color:var(--gold);color:var(--gold)}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}.section-title{margin:8px 0 14px;font-size:18px}.card{display:block;background:var(--bg-card);border:1px solid var(--line);border-radius:20px;padding:18px;min-height:168px;box-shadow:var(--shadow);color:inherit;transition:transform .15s ease,border-color .15s ease}.card:hover{transform:translateY(-3px);border-color:var(--gold-dim)}.avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:#f6e6d8;color:var(--gold);font-family:"Noto Serif SC",serif;font-size:20px;border:1px solid var(--line)}.card h3{margin:12px 0 4px;font-size:18px}.tagline{color:var(--muted);font-size:13px;min-height:2.4em}.last{margin-top:12px;font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-shell{height:100vh;display:grid;grid-template-rows:auto 1fr auto;max-width:820px;margin:0 auto;background:var(--bg-raise)}.chat-head{display:flex;align-items:center;gap:12px;padding:14px 16px;border-bottom:1px solid var(--line);background:#fffcf8eb;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.chat-head .meta{flex:1;min-width:0}.chat-head h1{margin:0;font-size:18px}.stream{overflow-y:auto;padding:18px 16px 28px;display:flex;flex-direction:column;gap:12px}.bubble{max-width:min(78%,560px);padding:12px 14px;border-radius:16px;white-space:pre-wrap;word-break:break-word;border:1px solid var(--line)}.bubble.user{align-self:flex-end;background:var(--user);border-bottom-right-radius:4px}.bubble.assistant{align-self:flex-start;background:var(--bot);border-bottom-left-radius:4px}.composer{display:grid;grid-template-columns:1fr auto auto;gap:8px;padding:12px 16px 18px;border-top:1px solid var(--line);background:#fffcf8f5}.composer textarea{min-height:48px;max-height:160px;resize:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}@media(max-width:640px){.page{padding:16px 14px 60px}.bubble{max-width:88%}.composer{grid-template-columns:1fr}}