*{box-sizing:border-box}
html,body{margin:0;padding:0;width:100%;height:100%;overflow:hidden;background:#fff;color:#111;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'PingFang SC','Microsoft YaHei',sans-serif}
:root{--app-w:100%;--app-h:100%}
.page{width:100%;height:100%;display:flex;flex-direction:column;position:relative;overflow:hidden}
.header{position:fixed;top:0;left:0;right:0;height:60px;background:#fff;border-bottom:1px solid #e5e7eb;z-index:10}
.header-inner{height:100%;display:flex;align-items:center;gap:6px;justify-content:flex-start;padding:0 16px;max-width:var(--app-w);margin:0 auto}
.hamburger{display:flex;flex-direction:column;gap:3px;margin-left:8px}
.hamburger .bar{width:16px;height:2px;background:#111;border-radius:1px}
.mode-group{position:relative;display:flex;align-items:center}
.mode-toggle{margin-left:6px;font-size:13px;color:#666;cursor:pointer}
.mode-menu{position:absolute;top:28px;left:0;background:#fff;border:1px solid #e5e7eb;border-radius:8px;display:flex}
.segmented .seg-item{padding:8px 12px;cursor:pointer}
.segmented .seg-item.active{background:#f5f5f5}
.title{font-size:18px;font-weight:600;color:#111;margin-left:8px}
.chat-window{flex:1;box-sizing:border-box;padding:76px 20px 88px;background:#fff;overflow:auto;max-width:var(--app-w);margin:0 auto;width:100%}
.chat-window::-webkit-scrollbar{width:4px;background:transparent}
.chat-window::-webkit-scrollbar-thumb{background:rgba(0,0,0,0.15);border-radius:999px}
.chat-window::-webkit-scrollbar-track{background:transparent}
.msg-row{display:flex;margin:12px 0;width:100%}
.msg-row.user{justify-content:flex-end}
.msg-row.assistant{justify-content:flex-start}
.bubble{max-width:80%;padding:12px 16px;border-radius:12px;border:1px solid #e5e7eb;background:#fafafa;color:#111;white-space:pre-wrap;word-break:break-word;line-height:1.6}
.msg-row.user .bubble{background:#f5f5f5;border-color:#e5e5e5;border-bottom-right-radius:2px}
.msg-row.assistant .bubble{background:transparent;border:none;box-shadow:none;padding-left:0}
.bubble.thinking{background:transparent!important;border:none!important;box-shadow:none!important;padding:0!important}
.typing-indicator{width:20px;height:20px;border-radius:50%;background:#e5e7eb;margin-right:8px}
.tagline-overlay{position:fixed;top:60px;left:0;right:0;padding:16px 20px;color:#666;max-width:var(--app-w);margin:0 auto}
.tagline-line1{font-weight:600;margin-bottom:6px}
.input-bar{position:fixed;left:0;right:0;bottom:0;background:rgba(255,255,255,0.8);border-top:1px solid rgba(0,0,0,0.05);padding:10px 16px 20px;backdrop-filter:blur(8px)}
.input-wrapper{display:flex;align-items:flex-end;position:relative;max-width:var(--app-w);margin:0 auto;background:#F7F7F8;border:1px solid rgba(0,0,0,0.1);border-radius:24px;box-shadow:0 1px 2px rgba(0,0,0,0.04),0 4px 12px rgba(0,0,0,0.02);transition:all 0.2s cubic-bezier(0.25,0.1,0.25,1);padding:2px}
.input-wrapper:focus-within{border-color:rgba(0,0,0,0.25);box-shadow:0 0 0 2px rgba(0,0,0,0.05),0 4px 12px rgba(0,0,0,0.06)}
.input-textarea{flex:1;min-height:22px;max-height:120px;border:none;background:transparent;padding:0 12px;resize:none;font-size:15px;line-height:22px;color:#111;outline:none;margin-bottom:5px;height:auto;overflow-y:auto}
.input-textarea::-webkit-scrollbar{width:4px;background:transparent}
.input-textarea::-webkit-scrollbar-thumb{background:rgba(0,0,0,0.15);border-radius:2px}
.send-inside{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;background:#e5e5e5;color:#fff;transition:all 0.2s;font-size:16px;flex-shrink:0;margin-left:6px}
.send-inside.idle{background:#e5e5e5;color:#fff;pointer-events:none}
.send-inside.active{background:#000;color:#fff;pointer-events:auto}
.send-inside.replying{background:#000;color:#fff;border-radius:50%;pointer-events:auto}
.thinking-inside{display:none}
.dot-loading{display:flex;gap:6px}
.dot{width:6px;height:6px;border-radius:3px;background:#333;animation:dotBounce 1s infinite ease-in-out}
.dot:nth-child(2){animation-delay:.15s}
.dot:nth-child(3){animation-delay:.3s}
@keyframes dotBounce{0%,80%,100%{transform:scale(.8);opacity:.6}40%{transform:scale(1);opacity:1}}
.thinking-pulse{width:22px;height:22px;border-radius:50%;background:#fff;border:2px solid rgba(0,0,0,.35);animation:pulseScaleOnly 1.1s ease-in-out infinite;box-shadow:0 2px 6px rgba(0,0,0,.08)}
@keyframes pulseScaleOnly{0%{transform:scale(.85)}50%{transform:scale(1.15)}100%{transform:scale(.85)}}
.mask{position:absolute;left:0;right:0;top:0;bottom:0;z-index:15;background:rgba(0,0,0,.4);opacity:0;pointer-events:none;transition:all 220ms cubic-bezier(0.25, 0.1, 0.25, 1)}
.menu-open .mask{opacity:1;pointer-events:auto}
.hidden{display:none!important}
.drawer-user{position:absolute;left:12px;bottom:12px;display:flex;align-items:center;gap:10px;justify-content:flex-start}
.user-avatar{width:36px;height:36px;border-radius:50%;background:#e8e8e8;color:#333;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:12px;cursor:pointer}
.user-menu-popup{position:absolute;left:0;bottom:46px;background:#fff;border:1px solid #e5e7eb;border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,.15);width:160px;overflow:hidden;z-index:15}
.user-menu-name{padding:12px 16px 8px;font-size:14px;font-weight:600;color:#111;border-bottom:1px solid #f0f0f0}
.user-menu-item{padding:10px 16px;font-size:13px;color:#d32f2f;cursor:pointer}
.user-menu-item:hover{background:#f5f5f5}
.left-drawer{position:fixed;top:0;bottom:0;left:0;width:85vw;max-width:360px;background:#fff;border-right:1px solid #e5e7eb;transform:translateX(-100%);transition:all 220ms cubic-bezier(0.25, 0.1, 0.25, 1);z-index:20;padding:10px;box-shadow:4px 0 12px rgba(0,0,0,.08);will-change:transform;display:flex;flex-direction:column}
.conversation-list{flex:1;overflow-y:auto;padding-right:2px}
.conversation-item{padding:12px;border-radius:8px;cursor:pointer;margin-bottom:4px;color:#333;font-size:14px;transition:background 0.2s,transform 0.1s cubic-bezier(0.25,0.1,0.25,1);display:flex;align-items:center;gap:8px;position:relative;padding-right:32px}
.conversation-item:hover{background:#f9f9f9}
.conversation-item:active{transform:scale(0.97)}
.conversation-item.active{background:#f0f0f0;font-weight:500;color:#000}
.conversation-title{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}
.conv-actions-btn{position:absolute;right:8px;top:50%;transform:translateY(-50%);width:24px;height:24px;border-radius:4px;display:flex;align-items:center;justify-content:center;color:#999;cursor:pointer;opacity:0;transition:all 0.2s}
.conversation-item:hover .conv-actions-btn{opacity:1}
.conv-actions-btn:hover{background:rgba(0,0,0,0.05);color:#333}
.conv-menu-popup{position:fixed;z-index:100;background:#fff;border:1px solid #e5e7eb;border-radius:12px;box-shadow:0 4px 16px rgba(0,0,0,0.12);min-width:120px;padding:6px;display:flex;flex-direction:column;opacity:0;pointer-events:none;transform:scale(0.95);transition:opacity 0.1s,transform 0.1s}
.conv-menu-popup.visible{opacity:1;pointer-events:auto;transform:scale(1)}
.conv-menu-item{padding:8px 12px;border-radius:8px;font-size:14px;color:#333;cursor:pointer;display:flex;align-items:center;gap:8px}
.conv-menu-item:hover{background:#f5f5f5}
.conv-menu-item.delete{color:#d32f2f}
.conv-menu-item.delete:hover{background:#fff5f5}
@media (max-width:600px){.conv-actions-btn{opacity:1}}
.menu-open .left-drawer{transform:translateX(0)}
.main-content{position:relative;width:100%;height:100%;background:#fff;transition:all 220ms cubic-bezier(0.25, 0.1, 0.25, 1);z-index:1;will-change:transform,filter,opacity;display:flex;flex-direction:column}
.menu-open .main-content{transform:translateX(85vw);border-radius:0;box-shadow:none;overflow:hidden}
@media (min-width:450px){.menu-open .main-content{transform:translateX(360px)}}
.drawer-header{font-weight:600;margin-bottom:8px}
.drawer-section{margin-bottom:12px}
.drawer-title{font-size:14px;color:#666;margin-bottom:6px}
.drawer-history{font-size:12px;color:#444}
.drawer-history-wrap{position:relative;padding-bottom:28px}
.clear-mini{position:absolute;right:0;bottom:0;padding:4px 8px;font-size:12px;border:1px solid #e5e7eb;border-radius:8px;background:#fff;color:#111;cursor:pointer}
.clear-mini:hover{background:#f5f5f5}
.confirm-modal{position:fixed;left:0;right:0;top:0;bottom:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;z-index:40}
.confirm-modal.hidden{display:none}
.confirm-card{width:92%;max-width:360px;background:#fff;border:1px solid #e5e7eb;border-radius:12px;box-shadow:0 10px 24px rgba(0,0,0,.12);padding:16px}
.confirm-title{font-weight:600;margin-bottom:8px;color:#111}
.confirm-text{font-size:14px;color:#444;margin-bottom:12px}
.confirm-actions{display:flex;gap:10px;justify-content:flex-end}
.btn{padding:8px 12px;border-radius:10px;border:1px solid #e5e7eb;cursor:pointer}
.btn.primary{background:#000;color:#fff;border-color:#000}
.msg-col{display:flex;flex-direction:column;align-items:flex-start;max-width:100%}
.msg-row.assistant .msg-col{width:100%}
.message-toolbar{display:flex;gap:18px;margin-top:6px;padding-left:4px}
.tool-btn{width:16px;height:16px;color:#555;cursor:pointer;transition:color 0.2s;display:flex;align-items:center;justify-content:center}
.tool-btn:hover{color:#333}
.tool-btn svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.tool-btn.active{color:#000}
@keyframes fadeIn{to{opacity:1}}
@keyframes spin{100%{transform:rotate(360deg)}}
.mini-player{position:fixed;top:68px;right:16px;z-index:90;background:rgba(255,255,255,0.95);backdrop-filter:blur(10px);border:1px solid rgba(0,0,0,0.08);border-radius:12px;padding:8px 12px;display:flex;align-items:center;gap:10px;box-shadow:0 4px 12px rgba(0,0,0,0.08);opacity:0;transform:translateY(-10px);pointer-events:none;transition:all 0.2s cubic-bezier(0.25,0.1,0.25,1);max-width:240px;width:auto}
.mini-player.visible{opacity:1;transform:translateY(0);pointer-events:auto}
.mini-close-btn{width:20px;height:20px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:#999;margin-left:2px;border-radius:50%;transition:all 0.2s;font-size:18px;line-height:1;flex-shrink:0}
.mini-close-btn:hover{background:rgba(0,0,0,0.05);color:#333}
.mini-play-btn{width:24px;height:24px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:#333;flex-shrink:0}
.mini-play-btn svg{width:18px;height:18px;fill:currentColor}
.mini-track{flex:1;height:4px;background:#e5e7eb;border-radius:2px;position:relative;cursor:pointer;min-width:100px;display:flex;align-items:center}
.mini-progress{position:absolute;left:0;top:0;height:100%;background:#333;border-radius:2px;width:0%;pointer-events:none}
.mini-thumb{position:absolute;left:0;width:10px;height:10px;background:#fff;border:2px solid #333;border-radius:50%;transform:translateX(-50%);box-shadow:0 1px 3px rgba(0,0,0,0.15);cursor:grab;pointer-events:none;transition:transform 0.1s}
.mini-track:hover .mini-thumb{transform:translateX(-50%) scale(1.2)}
.mini-track:active .mini-thumb{cursor:grabbing;transform:translateX(-50%) scale(1.2)}
.mini-time{font-size:11px;color:#666;font-variant-numeric:tabular-nums;min-width:32px;text-align:right;flex-shrink:0}
.icon-spin{animation:spin 0.8s linear infinite}
.icon-spin{animation:spin 0.8s linear infinite}
@media (max-width:480px){.header{height:54px}.tagline-overlay{top:54px;padding:12px 14px}.title{font-size:16px}.chat-window{padding:60px 12px 76px}.bubble{max-width:82%}}
.speak-btn{margin-left:8px;padding:2px 6px;font-size:12px;border:1px solid #e5e7eb;border-radius:6px;background:#fff;color:#111;cursor:pointer}
.speak-btn:hover{background:#f5f5f5}
.speak-btn.icon-only{border:none;background:transparent;padding:4px;width:32px;height:32px;display:flex;align-items:center;justify-content:center;color:#444}
.speak-btn.icon-only:hover{background:rgba(0,0,0,.05);color:#000}
.speak-btn.icon-only svg{width:22px;height:22px}
#newChatBtn svg{width:22px;height:22px;transform:translateX(1px)}
.header-icon-btn{width:32px;height:32px;border-radius:50%;background:rgba(255,255,255,0.01);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(0,0,0,0.06);display:flex;align-items:center;justify-content:center;color:#444;cursor:pointer;transition:all 0.2s cubic-bezier(0.25,0.1,0.25,1);margin-left:8px;padding:0;-webkit-tap-highlight-color:transparent}

.click-anim{animation:popScale .2s ease-out}

@keyframes popScale{0%{transform:scale(.9)}100%{transform:scale(1)}}