:root{--primary:#10a37f;--primary-dark:#0d8a6a;--ai-bubble:#fff;--user-bubble:linear-gradient(135deg, #10a37f 0%, #0d8a6a 100%);--page-bg:#f7f7f8;--text-dark:#1f2328;--text-muted:#8b8b95;--border:#ececef;--danger:#dc2626;color:var(--text-dark);background:var(--page-bg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0}body{background:var(--page-bg)}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{border:0}.eyebrow{color:var(--primary);letter-spacing:.08em;text-transform:uppercase;margin:0 0 6px;font-size:12px;font-weight:700}.primary-btn,.ghost-btn,.danger-btn{border-radius:999px;justify-content:center;align-items:center;min-height:44px;padding:0 18px;font-weight:700;display:inline-flex}.primary-btn{background:var(--primary);color:#fff}.primary-btn:disabled,.ghost-btn:disabled{opacity:.55}.ghost-btn{color:var(--text-dark);border:1px solid var(--border);background:#fff}.danger-btn{color:var(--danger);background:#fee2e2}.chat-page{background:var(--page-bg);flex-direction:column;max-width:720px;height:100%;margin:0 auto;display:flex;position:relative}.chat-header,.page-header{border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#ffffffeb;justify-content:space-between;align-items:center;gap:16px;padding:14px 16px 10px;display:flex}.chat-header h1,.page-header h1{margin:0;font-size:18px}.chat-header nav,.page-header a{color:var(--text-muted);gap:12px;font-size:14px;display:flex}.msg-list{-webkit-overflow-scrolling:touch;flex:1;min-height:0;padding:16px 12px 156px;overflow-y:auto}.msg{align-items:flex-start;margin-bottom:14px;display:flex}.msg-enter{animation:.25s ease-out fadeIn}.msg-ai{justify-content:flex-start}.msg-user{justify-content:flex-end}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.avatar{color:#fff;border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:13px;font-weight:700;display:flex}.avatar-ai{background:linear-gradient(135deg,#10a37f 0%,#1ec3a0 100%);margin-right:8px}.avatar-user{background:linear-gradient(135deg,#5b8def 0%,#3a6dd8 100%);margin-left:8px}.bubble{word-break:break-word;border-radius:14px;max-width:min(72vw,540px);padding:10px 12px;font-size:15px;line-height:1.65;box-shadow:0 2px 8px 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#bfdbfe;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:12px;display:flex}.session-label{color:#6b7280;font-size:13px}.session-close-btn{color:#fff;background:#2f67c9;border-radius:999px;padding:6px 12px;font-size:13px;font-weight:700}.quick-reply-wrap{background:var(--page-bg);-webkit-overflow-scrolling:touch;gap:8px;padding:8px 12px;display:flex;overflow-x:auto}.quick-reply-tag{color:#0d8a6a;background:#fff;border:1px solid #d7e9e4;border-radius:999px;flex:none;padding:7px 12px;font-size:13px}.input-area{border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom);background:#fff;box-shadow:0 -2px 16px #00000008}.input-bar{align-items:center;gap:8px;padding:8px 12px;display:flex}.input{min-height:44px;color:var(--text-dark);background:#f2f2f5;border:0;border-radius:999px;outline:0;flex:1;padding:0 14px}.send-btn{background:var(--primary);color:#fff;border-radius:999px;min-width:62px;height:44px;padding:0 14px;font-weight:700}.send-btn.disabled{background:#d0d0d5}.stop-btn{background:#334155}.bubble-ai:has(.typing-text-wrap){width:fit-content}.typing-text-wrap{color:var(--text-muted);line-height:inherit;vertical-align:top;align-items:center;gap:6px;display:inline-flex}.typing-braille{contain:layout style;flex-shrink:0;grid-template-rows:repeat(3,2px);grid-template-columns:repeat(2,2px);align-self:center;gap:2px;width:6px;height:10px;display:grid}.typing-braille-dot{background:var(--primary);opacity:.2;width:2px;height:2px;animation:1.2s linear infinite brailleStep;animation-delay:calc(var(--step) * -.2s);transform-origin:50%;will-change:opacity;border-radius:50%;transform:scale(1)}@keyframes brailleStep{0%,16.6%{opacity:1;transform:scale(1.15)}16.7%,to{opacity:.2;transform:scale(1)}}@media (prefers-reduced-motion:reduce){.typing-braille-dot{opacity:.5;animation:none}.typing-braille-dot:first-child{opacity:1}}.auth-page,.home-page{max-width:720px;min-height:100%;margin:0 auto;padding:24px 16px}.auth-page{place-items:center;display:grid}.auth-card,.home-card{background:#fff;border-radius:24px;width:100%;padding:24px;box-shadow:0 12px 32px #0f172a14}.auth-card h1,.home-card h1{margin:0;font-size:26px}.auth-desc{color:var(--text-muted);margin:8px 0 22px}.auth-form{gap:14px;display:grid}.auth-form label{color:#4b5563;gap:6px;font-size:14px;display:grid}.auth-form input{border:1px solid var(--border);border-radius:14px;outline:0;width:100%;height:46px;padding:0 14px}.form-error{color:var(--danger);margin:0;font-size:14px}.link-btn{color:var(--primary);background:0 0;margin-top:18px;padding:0;font-weight:700}.profile-list{gap:10px;margin:20px 0;display:grid}.profile-list p{gap:4px;margin:0;display:grid}.profile-list span{color:var(--text-muted);font-size:13px}.profile-list strong{overflow-wrap:anywhere}.home-actions{gap:10px;display:grid}