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@media(max-width:760px){.mobile-only{display:inline-flex}.sidebar{position:absolute;inset:0 auto 0 0;width:min(84vw,330px);padding-top:max(20px,env(safe-area-inset-top));background:#fff;transform:translateX(-105%);transition:transform .18s ease;box-shadow:8px 0 30px #18233612}.drawer-open .sidebar{transform:translateX(0)}.sidebar-top{margin-bottom:22px}.sidebar .new-chat{background:#eef4fc}.sidebar .history-search{background:#f4f6fa}.sidebar .history-row.active{background:#eaf1fc}.main-shell{width:100%}.topbar{padding:max(10px,env(safe-area-inset-top)) 12px 8px;gap:4px}.topbar-brand{font-size:17px}.model-picker{font-size:12px;max-width:110px;padding-right:18px}.topbar .avatar{width:34px;height:34px}.topbar>.icon-button{width:40px}.topbar .new-top{margin-left:auto}.top-spacer{min-width:0}.conversation-column{padding:12px 22px 26px}.welcome{padding:8px 0 14px}.welcome-center{padding:25px 0 55px}.welcome h1{font-size:30px}.welcome p{font-size:12px}.welcome-mark{width:50px;height:50px;margin-bottom:22px}.suggestions{display:flex;flex-direction:column;gap:4px;padding-top:10px}.suggestion{display:flex;align-items:center;gap:13px;max-width:none;min-height:48px;padding:10px 9px;border:0;background:transparent;border-radius:12px;font-size:14px;flex:initial}.suggestion .icon{display:inline-block;margin:0;width:21px;height:21px;flex-shrink:0;color:#374f70}.composer-area{padding:0 14px max(13px,env(safe-area-inset-bottom))}.composer{padding:13px 11px 13px 21px;gap:10px;border-radius:30px;min-height:65px}.composer-note{font-size:9px;margin-top:9px}.chat-message{font-size:15px}.transcript{gap:25px}.message-user{max-width:90%;padding:10px 17px}.review-card{padding:17px;border-radius:18px}.task-strip{font-size:11px;padding:6px 5px}.auth-card{padding:28px 23px}.history-open{min-height:58px}.history-title{font-size:15px}.history-meta{font-size:11px}.account-menu .menu{right:2px}.welcome-center h1{white-space:nowrap}}
@media(max-width:350px){.topbar-brand{font-size:15px}.model-picker{font-size:11px;max-width:99px}.topbar{gap:1px;padding-left:7px;padding-right:7px}.topbar>.icon-button{width:36px;padding:8px}.welcome h1{font-size:26px}.conversation-column{padding-left:17px;padding-right:17px}.topbar .avatar{width:31px;height:31px}}
@media(prefers-reduced-motion:reduce){.sidebar{transition:none}.loading-dot{animation:none}}
.conversation-column.empty{height:100%}.install-dialog p{line-height:1.8;font-size:14px}.history-list:has(.row-menu[open]){padding-bottom:155px}
.privacy-check .sidebar,.privacy-check .main-shell{visibility:hidden}.privacy-check::after{content:'正在核对登录状态…';position:absolute;inset:0;display:grid;place-content:center;background:#f9fafc;color:#707784;font-size:14px;z-index:100}
.privacy-check>*{visibility:hidden}