:root{--p: #6366f1;--s: #ec4899;--bg: #f1f5f9;--card: #ffffff;--text: #1e293b;--sub: #94a3b8;--radius: 24px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{margin:0;font-family:PingFang SC,system-ui;background:var(--bg);color:var(--text);overflow:hidden}.app-shell{width:100%;height:100vh;display:flex;flex-direction:column}.nav-header{height:80px;padding:0 24px;display:flex;justify-content:space-between;align-items:center;background:#fffc;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:10}.logo-area{display:flex;align-items:center;gap:12px}.icon-circle{width:44px;height:44px;background:linear-gradient(135deg,var(--p),var(--s));border-radius:14px;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 8px 16px -4px #6366f166}.logo-area h2{margin:0;font-size:18px;font-weight:800}.logo-area h2 span{font-size:10px;color:var(--p);vertical-align:super}.status{margin:2px 0 0;font-size:10px;color:#10b981;display:flex;align-items:center;gap:4px;font-weight:600}.rotate-btn{width:44px;height:44px;border-radius:14px;border:1px solid #e2e8f0;background:#fff;color:var(--sub);cursor:pointer}.main-content{flex:1;overflow-y:auto;padding:20px}.editor-view{max-width:600px;margin:0 auto;display:flex;flex-direction:column;gap:20px}.mood-selector{background:var(--card);padding:20px;border-radius:var(--radius);box-shadow:0 4px 20px #00000008}.label{font-size:12px;font-weight:700;color:var(--sub);margin:0 0 16px;display:flex;align-items:center;gap:6px}.mood-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mood-item{border:2px solid transparent;background:#f8fafc;padding:12px;border-radius:16px;display:flex;flex-direction:column;align-items:center;gap:4px;cursor:pointer;transition:.2s}.mood-item.active{background:#fff;border-color:var(--c);transform:translateY(-3px);box-shadow:0 8px 15px -5px #0000001a}.mood-item .e{font-size:22px}.mood-item .l{font-size:12px;font-weight:600;color:var(--sub)}.mood-item.active .l{color:var(--text)}.input-card{background:var(--card);border-radius:var(--radius);padding:20px;box-shadow:0 10px 30px -10px #0000000d;position:relative}.input-card textarea{width:100%;height:160px;border:none;outline:none;font-size:16px;line-height:1.6;resize:none;color:var(--text)}.send-btn{position:absolute;bottom:16px;right:16px;padding:10px 24px;background:var(--text);color:#fff;border:none;border-radius:14px;font-weight:700;display:flex;align-items:center;gap:8px;cursor:pointer}.send-btn:disabled{opacity:.4}.reply-bubble{background:linear-gradient(135deg,#1e293b,#334155);color:#fff;padding:24px;border-radius:var(--radius);position:relative;overflow:hidden}.q-icon{position:absolute;top:-5px;left:-5px;opacity:.1;transform:scale(2)}.reply-bubble p{margin:0;font-size:15px;line-height:1.8;font-weight:500;position:relative;z-index:1}.history-view{max-width:600px;margin:0 auto}.trend-card{background:var(--card);padding:20px;border-radius:var(--radius);margin-bottom:20px}.trend-head h4{margin:0;font-size:15px}.trend-head p{margin:2px 0 15px;font-size:11px;color:var(--sub)}.trend-svg{width:100%;height:60px;filter:drop-shadow(0 4px 8px rgba(99,102,241,.2))}.history-item{background:var(--card);padding:20px;border-radius:var(--radius);margin-bottom:16px;box-shadow:0 4px 15px #00000005}.h-top{display:flex;align-items:center;gap:10px;margin-bottom:12px}.h-mood{font-size:12px;font-weight:700;background:#f1f5f9;padding:4px 10px;border-radius:8px}.h-date{font-size:11px;color:var(--sub);flex:1}.h-del{background:none;border:none;color:#ef4444;opacity:.3;cursor:pointer}.h-text{font-size:15px;margin:0 0 12px;line-height:1.5}.h-reply{font-size:13px;color:var(--sub);padding:12px;background:#f8fafc;border-radius:12px;border-left:3px solid var(--p)}.bottom-nav{height:80px;background:#fff;display:flex;justify-content:space-around;padding-bottom:15px;border-top:1px solid #f1f5f9}.bottom-nav button{background:none;border:none;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:var(--sub);cursor:pointer}.bottom-nav button.active{color:var(--p)}.bottom-nav span{font-size:11px;font-weight:700}.app-shell.landscape .editor-view{display:grid;grid-template-columns:240px 1fr;gap:20px;max-width:900px}.app-shell.landscape .reply-bubble{grid-column:span 2}.spin{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}