*{margin:0;padding:0;box-sizing:border-box}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#E5E7EB;border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:#D1D5DB}
::-webkit-scrollbar-button{display:none}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:#FFF;height:100vh;overflow:hidden}
:root{--blue:#3B82F6;--gold1:#f0c040;--gold2:#d4a020;--gray50:#F9FAFB;--gray100:#F3F4F6;--gray200:#E5E7EB;--gray400:#9CA3AF;--gray500:#6B7280;--gray700:#374151;--gray900:#1F2937;--drawer-w:280px}

.loading-mask{position:fixed;inset:0;background:#FFF;z-index:9999;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px}
.spinner{width:30px;height:30px;border:3px solid var(--gray200);border-top-color:var(--blue);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-text{font-size:14px;color:var(--gray400)}

.login-page{display:flex;align-items:center;justify-content:center;height:100vh;background:linear-gradient(180deg,#EFF6FF,#FFF);padding:20px}
.login-card{display:flex;flex-direction:column;align-items:center;background:#FFF;border-radius:24px;padding:36px;width:100%;max-width:360px;box-shadow:0 8px 32px rgba(0,0,0,.08)}
.login-logo{width:80px;height:80px;margin-bottom:8px}.login-title{font-size:32px;font-weight:700;color:var(--blue)}.login-desc{font-size:14px;color:var(--gray400);margin-bottom:32px}
.login-btn{width:100%;padding:14px;border:none;border-radius:16px;font-size:16px;font-weight:600;cursor:pointer;margin-bottom:12px;text-align:center}
.wx-btn{background:#07C160;color:#FFF}.dev-btn{background:var(--gray100);color:var(--gray700)}

.chat-page{display:flex;flex-direction:column;height:100vh;background:#FFF;overflow:hidden;position:relative;transition:padding .25s ease}
.chat-page.drawer-open{padding-left:var(--drawer-w)}
.message-list{flex:1;overflow-y:auto;padding:16px;max-width:900px;width:100%;margin:0 auto}
.input-area{padding:0 12px 8px;background:linear-gradient(to bottom,transparent,#FFF 30%);max-width:900px;width:100%;margin:0 auto}

@media (max-width:1200px){:root{--drawer-w:240px}}
@media (max-width:900px){:root{--drawer-w:200px}}
@media (max-width:600px){:root{--drawer-w:160px}}
.drawer-mask{display:none}
.drawer-panel{position:fixed;top:0;left:0;bottom:0;width:var(--drawer-w);background:#FFF;transform:translateX(-100%);transition:transform .25s ease;display:flex;flex-direction:column;z-index:5;border-right:1px solid var(--gray200)}
.drawer-panel.show{transform:translateX(0)}
.chat-header{display:flex;align-items:center;justify-content:center;padding:0 16px;border-bottom:1px solid var(--gray200);height:50px;background:#FFF}
.hdr-center{text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center}.hdr-title{font-size:16px;font-weight:700;color:var(--blue);line-height:1.8}.hdr-sub{font-size:10px;color:var(--gray400);line-height:1}

/* 导航胶囊 */
.nav-capsule{position:fixed;top:8px;left:12px;display:flex;align-items:center;gap:0;background:#FFF;border-radius:20px;padding:6px 2px;z-index:10;transition:left .25s ease;box-shadow:0 2px 12px rgba(0,0,0,.06),0 0 1px rgba(0,0,0,.04)}
.nav-capsule span{font-size:18px;color:#374151;cursor:pointer;padding:4px 12px;line-height:1;user-select:none}
.capsule-icon{display:flex;align-items:center;justify-content:center}
.nav-capsule .capsule-divider{width:1px;height:18px;background:rgba(0,0,0,.15);padding:0;cursor:default}
.nav-capsule--shifted{left:calc(var(--drawer-w) + 20px)}

.empty-state{display:flex;flex-direction:column;align-items:center;padding-top:10vh}.empty-logo{width:100px;height:100px;margin-bottom:20px}
.mode-box{background:#FFF;border:1px solid var(--gray200);border-radius:20px;padding:4px;margin-bottom:10px;display:inline-block}
.mode-scroll{overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;cursor:grab}.mode-scroll:active{cursor:grabbing}.mode-scroll::-webkit-scrollbar{display:none}
.mode-row{display:flex;flex-wrap:nowrap}.mode-chip{flex-shrink:0;text-align:center;padding:8px 16px;font-size:13px;color:var(--gray900);cursor:pointer;border-radius:16px;white-space:nowrap;user-select:none}.mode-chip.active{background:#EFF6FF;color:var(--blue);font-weight:600}
@media (max-width:700px){.mode-box{display:block;max-width:215px;overflow-x:auto}.mode-row{width:max-content}.mode-chip{padding:8px 10px;font-size:12px}}
.mode-hint{font-size:13px;color:var(--gray900);text-align:center;max-width:360px;line-height:1.5}
.msg-wrapper{margin-bottom:14px}.msg-user{display:flex;justify-content:flex-end}
.msg-user .bubble{max-width:70%;background:#E8F3FF;border-radius:16px 6px 16px 16px;padding:10px 14px;font-size:15px;line-height:1.6;word-break:break-word}
.msg-ai .bubble{max-width:85%;background:var(--gray50);border-radius:6px 16px 16px 16px;padding:10px 14px;font-size:15px;line-height:1.8;word-break:break-word}
.msg-ai .actions{display:flex;gap:12px;padding:4px 0}.msg-ai .actions span{font-size:12px;color:var(--gray500);cursor:pointer;opacity:.4;user-select:none;display:flex;align-items:center;transition:opacity .15s}.msg-ai .actions span:hover{opacity:1}.msg-ai .actions span.tapped{opacity:1}.msg-ai .actions span.tapped img{filter:brightness(0)}
.action-icon{width:20px;height:20px;flex-shrink:0;vertical-align:middle}
.doc-msg-card{display:flex;align-items:center;gap:10px;background:#FFF;border:1px solid var(--gray200);border-radius:10px;padding:12px 14px;margin:8px 0;cursor:pointer;max-width:300px}.doc-msg-card:hover{background:var(--gray50)}.doc-msg-icon{font-size:24px}.doc-msg-info{display:flex;flex-direction:column;min-width:0;flex:1;gap:4px}.doc-msg-name{font-size:14px;color:var(--gray900);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.doc-msg-hint{font-size:11px;color:var(--gray400)}
.doc-card{display:flex;align-items:center;gap:10px;background:#FFF;border:1px solid var(--gray200);border-radius:10px;padding:12px 14px;margin:8px 0;cursor:pointer;max-width:300px}.doc-card:hover{background:var(--gray50)}.doc-icon{font-size:24px}.doc-name{font-size:14px;color:var(--gray900);font-weight:500}.doc-hint{font-size:11px;color:var(--gray400)}
.processing{text-align:center;padding:14px;color:var(--gray400);font-size:13px}

.input-card{background:#FFF;border:1px solid var(--gray200);border-radius:20px;padding:8px 14px;box-shadow:0 -2px 12px rgba(0,0,0,.04),0 2px 8px rgba(0,0,0,.03)}.input-card:focus-within{border-color:var(--blue)}
.chat-input{width:100%;border:none;outline:none;resize:none;font-size:15px;line-height:1.5;min-height:36px;max-height:150px;padding:4px 0;caret-color:var(--blue);font-family:inherit;background:transparent}
.chat-input::placeholder{color:var(--gray400)}
.input-bar{display:flex;align-items:center;justify-content:space-between;padding-top:4px}
.upload-btn{font-size:15px;cursor:pointer;opacity:.7;padding:6px 14px;border-radius:999px;background:var(--gray100);display:inline-flex;align-items:center;gap:6px;color:var(--gray700)}.upload-btn:hover{opacity:1;background:#EFF6FF;color:var(--blue)}
.send-btn{padding:6px 20px;background:var(--blue);color:#FFF;border:none;border-radius:16px;font-size:14px;font-weight:600;cursor:pointer}.send-btn:active{background:#2563EB}.send-btn:disabled{background:var(--gray200);color:var(--gray400)}

.file-list{display:flex;flex-wrap:wrap;gap:6px;padding:4px 0}
.file-tag{display:flex;align-items:center;gap:5px;background:var(--gray100);border-radius:6px;padding:4px 8px;font-size:12px;color:var(--gray700)}.file-tag .remove{color:#EF4444;cursor:pointer;font-weight:700}

.drawer-hdr{display:flex;align-items:center;justify-content:center;padding:0 16px;border-bottom:1px solid var(--gray200);height:50px;gap:10px;flex-shrink:0}
.drawer-logo{width:30px;height:30px;flex-shrink:0}
.drawer-title-text{font-size:18px;font-weight:700;color:var(--blue)}
.drawer-body{flex:1;display:flex;flex-direction:column;overflow-y:auto}.drawer-user-panel{position:relative;border-top:1px solid var(--gray200);cursor:pointer;flex-shrink:0}.drawer-user{display:flex;align-items:center;padding:10px 16px;gap:10px}.drawer-arrow{font-size:12px;color:var(--gray400);margin-left:auto;transition:transform .3s}.drawer-user-panel.expanded .drawer-arrow{transform:rotate(180deg)}.drawer-avatar{font-size:28px}.drawer-nick{font-size:14px;color:var(--gray900)}.drawer-user-content{position:absolute;bottom:100%;left:0;right:0;max-height:0;overflow:hidden;background:#FFF;transition:max-height .3s ease;border-top:1px solid var(--gray200);z-index:5}.drawer-user-panel.expanded .drawer-user-content{max-height:80vh;overflow-y:auto}
.drawer-balance-card{margin:8px 16px;padding:14px;background:linear-gradient(135deg,#1a1a2e,#16213e);border-radius:12px;color:#FFF;cursor:pointer}
.drawer-bal-hdr{display:flex;justify-content:space-between;font-size:11px;margin-bottom:8px}.drawer-bal-row{display:flex;gap:10px}.drawer-bal-row>div{flex:1}.drawer-bal-label{display:block;font-size:11px;opacity:.8}.drawer-bal-val{display:block;font-size:20px;font-weight:700;color:#ffd700}.drawer-bal-stats{margin-top:8px;font-size:11px;opacity:.8;line-height:1.6}
.drawer-actions{display:flex;gap:8px;margin:8px 16px}
.drawer-btn{flex:1;padding:9px;border:none;border-radius:18px;font-size:14px;font-weight:600;cursor:pointer}
.refund-btn{background:#D1FAE5;color:#047857}.recharge-btn{background:linear-gradient(135deg,var(--gold1),var(--gold2));color:#FFF}
.drawer-invite{margin:8px 16px;padding:12px;background:linear-gradient(135deg,#fef9e7,#fdebd0);border-radius:12px;text-align:center;font-size:12px}
.invite-title{font-size:14px;font-weight:700;color:#e67e22;margin-bottom:4px}.invite-hint{font-size:11px;color:#7c3aed}.invite-btn{width:100%;margin-top:8px;padding:8px;background:linear-gradient(135deg,#8b5cf6,#7c3aed);color:#FFF;border:none;border-radius:16px;font-size:13px;font-weight:600;cursor:pointer}
.drawer-pricing{margin:8px 16px;padding:10px;background:var(--gray50);border-radius:10px;font-size:12px;line-height:1.8}.pricing-title{font-weight:700;margin-bottom:2px}.pricing-note{font-size:11px;margin-top:4px}
.drawer-footer-links{padding:10px 16px;border-top:1px solid var(--gray200);margin-top:auto}.drawer-footer-links a{color:var(--gray500);text-decoration:none;font-size:13px;display:inline-flex;align-items:center;gap:6px}
.drawer-pill{display:flex;align-items:center;background:#fff;border-radius:20px;padding:4px;margin-bottom:8px;box-shadow:0 2px 12px rgba(0,0,0,.12)}
.drawer-pill-item{flex:1;display:flex;align-items:center;justify-content:center;gap:4px;padding:8px 6px;color:#374151;text-decoration:none;font-size:12px}
.drawer-pill-divider{width:1px;height:18px;background:#D1D5DB}
.footer-link-icon{width:18px;height:18px;flex-shrink:0}

.hist-search{width:calc(100% - 32px);margin:12px 16px;padding:10px 14px 10px 36px;border:1px solid var(--gray200);border-radius:12px;font-size:14px;outline:none;background:var(--gray50) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%239CA3AF'%3E%3Cpath d='M11.742 10.344a6.5 6.5 0 1 0-1.397 1.398h-.001l3.85 3.85a1 1 0 0 0 1.415-1.414l-3.85-3.85zm-5.242.156a5 5 0 1 1 0-10 5 5 0 0 1 0 10z'/%3E%3C/svg%3E") 12px center no-repeat;transition:all .2s}.hist-search:focus{border-color:var(--blue);background-color:#FFF}
.hist-body{flex:1;overflow-y:auto;padding:0 6px;min-height:0}.hist-empty{text-align:center;padding:24px;color:var(--gray400);font-size:13px}
.hist-month{margin-bottom:4px}.hist-month-label{font-size:12px;color:var(--gray500);font-weight:600;padding:6px 0}
.hist-item{padding:4px 8px;margin:1px 0;border-radius:10px;cursor:pointer;display:flex;align-items:flex-start;transition:background .15s;gap:6px}.hist-item:hover{background:var(--gray50)}
.hist-dot{width:6px;height:6px;border-radius:50%;background:#D1D5DB;flex-shrink:0;margin-top:6px}
.hist-item-left{flex:1;min-width:0}
.hist-item-title{font-size:14px;color:var(--gray900);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:block}
.hist-item-time{font-size:11px;color:var(--gray400)}
.hist-item-dots,.hist-month-dots{font-size:16px;color:var(--gray400);cursor:pointer;padding:0 4px;opacity:0;transition:opacity .15s;flex-shrink:0;position:relative;margin-left:auto}.hist-item:hover .hist-item-dots,.hist-month:hover .hist-month-dots,.hist-month-label:hover+.hist-month-dots{opacity:1}
.hist-month{display:flex;align-items:center}
.hist-menu-item{display:block;padding:8px 16px;font-size:14px;color:var(--gray700);white-space:nowrap}.hist-menu-item:hover{background:var(--gray50)}

.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:300;display:flex;align-items:center;justify-content:center}
.modal-sheet{width:100%;max-width:450px;background:var(--gray50);border-radius:20px;padding:24px 20px;position:relative}
.modal-close{position:absolute;top:12px;right:16px;font-size:24px;color:#9CA3AF;cursor:pointer;line-height:1}
.modal-title{font-size:18px;font-weight:700;color:var(--gray900);text-align:center;margin-bottom:20px}
.tag-row{display:flex;gap:10px;margin-bottom:16px;justify-content:center}
.tag{padding:8px 16px;border-radius:18px;font-size:13px;background:var(--gray100);color:var(--gray500);cursor:pointer}.tag.active{background:var(--blue);color:#FFF}
.dislike-textarea{width:100%;height:70px;background:#FFF;border:1px solid var(--gray200);border-radius:10px;padding:10px;font-size:14px;resize:none;margin-bottom:14px;font-family:inherit}
.modal-submit{width:100%;padding:12px;background:var(--blue);color:#FFF;border:none;border-radius:18px;font-size:15px;font-weight:600;cursor:pointer}
.recharge-amounts{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:14px}
.recharge-amt{width:calc(33% - 10px);padding:14px;text-align:center;background:#FFF;border-radius:14px;font-size:16px;font-weight:600;cursor:pointer}.recharge-amt:hover{background:#EFF6FF;color:var(--blue)}
.custom-amount-row{display:flex;gap:10px;align-items:center;justify-content:center;margin-bottom:10px}
.custom-input{flex:1;padding:10px 14px;border:1px solid var(--gray200);border-radius:14px;font-size:15px;outline:none;background:#FFF;max-width:180px;display:block}.custom-input:focus{border-color:var(--blue)}
.custom-confirm{padding:10px 18px;background:var(--blue);color:#FFF;border:none;border-radius:14px;font-size:14px;font-weight:600;cursor:pointer;display:block}
.refund-submit{background:#059669}

/* 记忆管理 */
.memory-dlg{width:640px;max-width:95vw;max-height:85vh;overflow:hidden;background:#f5f5f5;border-radius:32px;display:flex;flex-direction:column}
.memory-dlg-inner{flex:1;overflow-y:auto;padding:32px 28px 24px;overscroll-behavior:contain}
.memory-add-btn{width:100%;padding:14px;font-size:15px;color:#3B82F6;background:#EFF6FF;border-radius:12px;border:2px dashed #3B82F6;cursor:pointer;margin-bottom:24px}
.memory-dlg-title{font-size:18px;font-weight:700;color:#1F2937;text-align:center;margin-bottom:24px}
.memory-input{border:2px solid #E5E7EB;border-radius:50px;height:56px;line-height:56px;padding:0 20px;font-size:17px;color:#374151;background:#F9FAFB;text-align:center;margin-bottom:16px;width:100%;box-sizing:border-box}
.memory-caps-row{display:flex;gap:10px;margin-bottom:20px;flex-wrap:wrap}
.memory-caps{padding:12px 20px;font-size:14px;color:#6B7280;background:#F9FAFB;border-radius:50px;border:2px solid #E5E7EB;cursor:pointer}
.memory-caps--on{color:#2563EB;background:#EFF6FF;border-color:#2563EB;font-weight:700}
.memory-opt-row{display:flex;gap:12px;margin-bottom:16px}
.memory-opt{flex:1;padding:16px;font-size:16px;color:#6B7280;background:#F9FAFB;border:2px solid #E5E7EB;border-radius:50px;text-align:center;cursor:pointer}
.memory-opt--on{color:#2563EB;background:#EFF6FF;border-color:#2563EB;font-weight:700}
.memory-dlg-btns{display:flex;gap:16px;margin-top:12px}
.memory-btn-cancel{flex:1;padding:14px;font-size:17px;color:#6B7280;background:#fff;border-radius:50px;border:2px solid #E5E7EB;cursor:pointer}
.memory-btn-save{flex:1;padding:14px;font-size:17px;color:#fff;background:#3B82F6;border-radius:50px;border:none;cursor:pointer}
.memory-info{margin:20px 0 0;padding:20px 24px;background:#fff;border-radius:16px}
.memory-info-title{font-size:16px;font-weight:600;color:#1F2937;margin-bottom:12px}
.memory-info-desc{font-size:13px;color:#6B7280;line-height:1.8;margin-bottom:6px}
.memory-info-desc b{color:#1F2937}