:root{font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,PingFang SC,Microsoft YaHei,sans-serif;color:#10213e;background:#fff;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}html,body,#app{width:100%;min-height:100%;margin:0}html,body{overflow-x:hidden;touch-action:pan-x pan-y;overscroll-behavior-y:none}body{background:#fff}button,input{font:inherit}button{color:inherit}.app-shell{--page-padding: 16px;--header-height: 72px;--composer-clearance: 96px;position:relative;display:flex;flex-direction:column;width:min(100%,430px);max-width:100%;min-height:100dvh;margin:0 auto;overflow-x:clip;background:radial-gradient(circle at 11% 18%,rgba(255,255,255,.94) 0 6%,transparent 24%),radial-gradient(circle at 88% 27%,rgba(255,255,255,.76) 0 8%,transparent 29%),linear-gradient(152deg,#eef7ff,#e4f1ff 45%,#f4f9ff 75%,#e7f3ff);isolation:isolate}.ambient{position:absolute;z-index:-1;border-radius:50%;pointer-events:none;filter:blur(18px)}.ambient-one{top:142px;right:-110px;width:270px;height:400px;background:#97ccff42;transform:rotate(20deg)}.ambient-two{bottom:110px;left:-130px;width:300px;height:330px;background:#ffffffbf}.app-header{position:relative;z-index:5;flex:0 0 auto;min-width:0;padding-top:env(safe-area-inset-top)}.brand-bar{display:flex;align-items:center;justify-content:space-between;height:var(--header-height);min-width:0;padding:8px var(--page-padding) 10px 22px;transition:height .46s cubic-bezier(.22,.78,.24,1),padding .46s cubic-bezier(.22,.78,.24,1)}.brand{display:flex;align-items:center;gap:10px;min-width:0;padding:0;text-align:left;cursor:pointer;background:none;border:0}.brand-logo{display:block;flex:0 0 auto;width:34px;height:34px;overflow:hidden;background:#0e64dd;border-radius:50%}.brand-logo img{display:block;width:100%;height:100%;object-fit:contain}.brand-copy{display:flex;flex-direction:column;white-space:nowrap}.brand-copy strong{font-size:17px;font-weight:750;line-height:1.15;letter-spacing:-.4px}.brand-copy small{margin-top:6px;color:#5d687b;font-size:10px;font-weight:650;letter-spacing:2.6px}.history-button{display:flex;align-items:center;flex:0 0 auto;gap:6px;min-height:34px;padding:0 13px;color:#1671ff;font-size:14px;font-weight:600;cursor:pointer;background:#ffffffd6;border:0;border-radius:22px;box-shadow:0 5px 20px #5a99de14}.history-button svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:2}.home-content{min-width:0;flex:0 0 auto;padding:0 var(--page-padding) calc(var(--composer-clearance) + 16px)}.welcome-card{position:relative;display:grid;grid-template-areas:"copy copy" "questions mascot";grid-template-columns:minmax(0,1fr) clamp(106px,37%,148px);grid-template-rows:auto minmax(174px,200px);column-gap:8px;row-gap:9px;min-height:340px;padding:22px 15px 18px 19px;overflow:hidden;background:radial-gradient(ellipse at 71% 28%,rgba(255,255,255,.95),transparent 18%),radial-gradient(ellipse at 63% 76%,rgba(255,255,255,.88),transparent 33%),linear-gradient(145deg,#e2f1ffb8,#c5e1ff87);border:1px solid rgba(255,255,255,.96);border-radius:15px;box-shadow:inset 0 0 50px #ffffff3d}.welcome-card:after{position:absolute;right:-14px;bottom:-55px;width:245px;height:150px;content:"";background:linear-gradient(166deg,transparent 24%,rgba(255,255,255,.55) 25% 27%,transparent 28%),radial-gradient(ellipse,rgba(140,198,255,.24),transparent 65%);transform:rotate(-5deg)}.welcome-copy{position:relative;z-index:3;grid-area:copy}.welcome-copy h1{margin:0;color:#10284c;font-size:24px;font-weight:760;line-height:1.5;letter-spacing:-.8px}.welcome-copy h1 span{color:#2478f5}.welcome-copy p{margin:5px 0 0;color:#1a2e4e;font-size:15px;line-height:1.5;letter-spacing:-.2px}.mascot-stage{position:relative;z-index:2;grid-area:mascot;align-self:center;width:100%;height:200px;overflow:hidden;filter:drop-shadow(0 12px 10px rgba(54,109,169,.18))}.home-mascot{position:relative;width:100%;height:100%;pointer-events:none}.home-mascot__fallback{position:absolute;top:0;left:0;width:286%;height:auto;max-width:none;object-fit:contain;object-position:left top;opacity:1;transition:opacity .18s ease}.home-mascot__fallback.is-hidden{opacity:0}.home-mascot__canvas{display:block;width:100%;height:100%;opacity:0;transition:opacity .18s ease}.home-mascot__canvas.is-visible{opacity:1}.question-list{position:relative;z-index:4;grid-area:questions;align-self:center;display:grid;width:100%;gap:7px}.quick-question{display:grid;grid-template-columns:18px minmax(0,1fr) 7px;align-items:center;width:100%;min-height:40px;padding:8px 9px;color:#10213e;font-size:12.5px;font-weight:600;line-height:1.25;text-align:left;cursor:pointer;background:#ffffffeb;border:0;border-radius:16px;box-shadow:0 4px 14px #4b84be12;transition:transform .16s ease,box-shadow .16s ease}.quick-question>span:nth-child(2){min-width:0;overflow-wrap:anywhere}.quick-question:hover,.quick-question:focus-visible{box-shadow:0 8px 22px #3576c32e;outline:none;transform:translateY(-1px)}.quick-question>svg{width:7px;fill:none;stroke:#a6b1c4;stroke-linecap:round;stroke-linejoin:round;stroke-width:2.2}.chat-dot{position:relative;display:inline-block;width:14px;height:12px;background:#2d7df3;border-radius:50%}.chat-dot:after{position:absolute;right:0;bottom:-1px;width:5px;height:5px;content:"";background:inherit;clip-path:polygon(0 0,100% 100%,16% 82%)}.chat-dot i{position:absolute;top:5px;width:1.5px;height:1.5px;background:#fff;border-radius:50%}.chat-dot i:first-child{left:4px}.chat-dot i:last-child{right:4px}.notice-card{display:flow-root;min-height:103px;margin-top:26px;padding:19px 16px 17px;background:#ffffffd1;border-radius:16px;box-shadow:0 10px 30px #487eb90d}.shield-icon{display:grid;float:left;width:19px;height:19px;margin:0 7px 0 0;place-items:center;background:#e2efff;border-radius:50%}.shield-icon svg{width:10px;height:12px;fill:none;stroke:#2b81fa;stroke-linecap:round;stroke-linejoin:round;stroke-width:2.4}.notice-card h2{margin:0 0 7px;color:#172844;font-size:16px;line-height:1.15}.notice-card p{margin:0;color:#53627a;font-size:13px;line-height:1.65}.composer{display:flex;gap:10px;align-items:center;width:100%;min-height:68px;padding:14px 15px;background:#ffffffdb;border-radius:17px;box-shadow:0 6px 28px #4d88c814}.floating-composer{position:fixed;z-index:20;right:var(--page-padding);bottom:max(10px,env(safe-area-inset-bottom));left:var(--page-padding);width:auto;max-width:398px;min-height:58px;margin-right:auto;margin-left:auto;padding:9px 10px;background:#fffffff0;border:1px solid rgba(255,255,255,.94);border-radius:18px;box-shadow:0 10px 28px #3269a633;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.composer input{min-width:0;height:40px;flex:1;padding:0 18px;color:#263750;font-size:16px;background:#ffffffeb;border:0;border-radius:23px;box-shadow:0 4px 16px #4f84c21a,inset 0 0 0 1px #e8f0fae6;outline:none}.composer input::placeholder{color:#a2acbd}.composer input:focus{box-shadow:0 4px 18px #2776eb2e,inset 0 0 0 1px #2776eb40}.composer button{width:65px;height:40px;flex:0 0 auto;color:#fff;font-size:14px;cursor:pointer;background:linear-gradient(135deg,#2184ff,#246af0);border:0;border-radius:24px;box-shadow:0 6px 16px #1870f538}.composer button:disabled,.quick-question:disabled{cursor:not-allowed;opacity:.58;transform:none}.composer input:disabled{color:#8190a7;cursor:wait}.operation-notice{position:relative;z-index:8;width:calc(100% - 32px);margin:0 auto 8px;padding:8px 11px;color:#9b3d37;font-size:12px;line-height:1.45;background:#fff5f4f2;border:1px solid rgba(220,102,94,.2);border-radius:10px}.is-chat{--page-padding: 20px;--header-height: 70px;--composer-clearance: 88px;width:min(100%,430px);min-height:100dvh;margin-top:0;margin-bottom:0;border-radius:0;background:radial-gradient(circle at 9% 13%,rgba(255,255,255,.96),transparent 24%),radial-gradient(circle at 88% 29%,rgba(255,255,255,.83),transparent 30%),linear-gradient(145deg,#edf6ff,#e8f2ff 46%,#f6faff 70%,#ecf5ff)}.is-chat:not(.is-history){height:100dvh;min-height:100dvh;max-height:100dvh;overflow-y:hidden}.is-history{--page-padding: 16px;--header-height: 72px;--composer-clearance: 96px;width:min(100%,430px);height:100dvh;min-height:100dvh;max-height:100dvh;margin-top:0;margin-bottom:0;overflow-y:hidden;background:radial-gradient(circle at 11% 18%,rgba(255,255,255,.94) 0 6%,transparent 24%),radial-gradient(circle at 88% 27%,rgba(255,255,255,.76) 0 8%,transparent 29%),linear-gradient(152deg,#eef7ff,#e4f1ff 45%,#f4f9ff 75%,#e7f3ff);border-radius:0}.is-chat .brand-bar{height:var(--header-height);padding:5px 19px 10px 21px;border-bottom:1px solid rgba(255,255,255,.52)}.is-chat .brand-logo{width:30px;height:30px}.is-chat .brand-copy strong{font-size:16px}.is-chat .brand-copy small{margin-top:5px;font-size:9px;letter-spacing:2.3px}.is-chat .history-button{min-height:31px;padding:0 12px;font-size:13.5px}.is-history .brand-bar{height:var(--header-height);padding:8px 16px 10px 22px;border-bottom:0}.is-history .brand-logo{width:34px;height:34px}.is-history .brand-copy strong{font-size:17px}.is-history .brand-copy small{margin-top:6px;font-size:10px;letter-spacing:2.6px}.is-history .history-button{min-height:34px;padding:0 13px;font-size:14px}.chat-content{position:relative;z-index:2;flex:1 0 auto;padding:32px var(--page-padding) 24px}.is-chat:not(.is-history) .chat-content{min-height:0;flex:1 1 auto;padding-bottom:calc(var(--composer-clearance) + 24px);overflow-x:hidden;overflow-y:auto;touch-action:pan-y;overscroll-behavior-y:contain;scroll-padding-bottom:calc(var(--composer-clearance) + 24px);scrollbar-width:none;-webkit-overflow-scrolling:touch}.is-chat:not(.is-history) .chat-content::-webkit-scrollbar{display:none}.empty-chat-state{margin:28px 0;color:#7f8ca0;font-size:13px;line-height:1.6;text-align:center}.history-content{min-height:0;flex:1 1 auto;padding-top:16px;padding-right:20px;padding-left:20px;padding-bottom:calc(var(--composer-clearance) + 24px);overflow-x:hidden;overflow-y:auto;touch-action:pan-y;overscroll-behavior-y:contain;scroll-padding-bottom:calc(var(--composer-clearance) + 24px);scrollbar-width:none;-webkit-overflow-scrolling:touch}.history-layer{position:absolute;z-index:4;top:calc(var(--header-height) + env(safe-area-inset-top));right:0;bottom:0;left:0;display:flex;flex-direction:column;overflow:hidden;pointer-events:none;background:radial-gradient(circle at 9% 13%,rgba(255,255,255,.96),transparent 24%),radial-gradient(circle at 88% 29%,rgba(255,255,255,.83),transparent 30%),linear-gradient(145deg,#edf6ff,#e8f2ff 46%,#f6faff 70%,#ecf5ff);box-shadow:0 -14px 34px #487eb90f;transform:translateY(calc(100% + 2px));transition:transform .46s cubic-bezier(.22,.78,.24,1);will-change:transform}.history-layer.is-presented{pointer-events:auto;transform:none;will-change:auto}.history-content::-webkit-scrollbar{display:none}.history-load-state{display:grid;min-height:34px;margin-bottom:10px;place-items:center;color:#8a96a9;font-size:11.5px}.history-load-state span{display:inline-flex;gap:6px;align-items:center}.history-load-state i{width:11px;height:11px;border:1.5px solid rgba(44,125,242,.25);border-top-color:#2c7df2;border-radius:50%;animation:history-loading .7s linear infinite}.history-content .conversation-pair+.conversation-pair{margin-top:34px}.latest-message-button{position:absolute;z-index:7;bottom:calc(var(--composer-clearance) + 20px);left:20px;display:inline-flex;gap:7px;align-items:center;min-height:34px;padding:4px 13px 4px 5px;color:#246fdf;font-size:12.5px;font-weight:600;cursor:pointer;background:#fffffff5;border:1px solid rgba(45,125,243,.12);border-radius:20px;box-shadow:0 8px 24px #2d68b133}.latest-message-button svg{width:24px;height:24px;padding:5px;fill:none;stroke:#fff;stroke-linecap:round;stroke-linejoin:round;stroke-width:2.3;background:#2d7df3;border-radius:50%}@keyframes history-loading{to{transform:rotate(360deg)}}.user-row{position:relative;display:flex;justify-content:flex-end;padding-right:38px}.user-message{max-width:220px;padding:10.5px 14px;color:#142844;font-size:14px;line-height:1.45;background:#d3e6fee0;border-radius:13px 13px 4px}.user-avatar{position:absolute;top:1px;right:-6px;display:grid;width:34px;height:34px;place-items:center;background:#ffffffeb;border-radius:50%;box-shadow:0 3px 12px #376faf1a}.user-avatar svg{width:27px;height:27px;fill:#2e7ffa}.user-row time{position:absolute;right:35px;bottom:-20px;color:#8b96aa;font-size:11px}.assistant-row{position:relative;display:flex;gap:12px;align-items:flex-start;margin-top:40px}.assistant-avatar{display:grid;width:34px;height:34px;flex:0 0 auto;margin-left:-4px;place-items:center;background:transparent;filter:drop-shadow(0 3px 5px rgba(54,108,173,.2))}.avatar-crop{position:relative;display:block;width:38px;height:38px;overflow:hidden}.avatar-crop img{position:absolute;top:1px;left:0;width:114px;height:64.6px;max-width:none;object-fit:contain;object-position:left top}.assistant-message{width:min(270px,calc(100% - 46px));display:flex;flex-direction:column;align-items:flex-start;gap:8px}.answer-card{width:100%;padding:15px 13px 12px;background:#ffffffe8;border-radius:13px;box-shadow:0 9px 30px #4178b80f}.answer-text{color:#172843;font-size:14.5px;line-height:1.62;overflow-wrap:anywhere}.answer-text.is-streaming{color:#587291;white-space:pre-wrap}.answer-generating{display:inline-flex;gap:8px;align-items:center;min-height:25px;color:#587291;font-size:14.5px;font-weight:500;line-height:1.62}.answer-generating-copy{overflow-wrap:anywhere}.answer-generating-caret{display:inline-block;width:1px;height:1em;margin-left:2px;vertical-align:-.12em;background:currentColor;animation:answer-generating-caret .78s step-end infinite}.answer-generating-spinner{width:17px;height:17px;flex:0 0 auto;border:2px solid rgba(44,125,242,.2);border-top-color:#2c7df2;border-radius:50%;animation:answer-generating-spin .76s linear infinite}.answer-generating-dots{display:inline-flex;gap:3px;align-items:center;height:17px;margin-left:-3px}.answer-generating-dots i{display:block;width:4px;height:4px;background:#6fa2e9;border-radius:50%;animation:answer-generating-dot 1.05s ease-in-out infinite}.answer-generating-dots i:nth-child(2){animation-delay:.14s}.answer-generating-dots i:nth-child(3){animation-delay:.28s}@keyframes answer-generating-spin{to{transform:rotate(360deg)}}@keyframes answer-generating-dot{0%,60%,to{opacity:.42;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}@keyframes answer-generating-caret{50%{opacity:0}}@media(prefers-reduced-motion:reduce){.answer-generating-spinner,.answer-generating-dots i,.answer-generating-caret{animation:none}}.markdown-body>:first-child{margin-top:0}.markdown-body>:last-child{margin-bottom:0}.markdown-body p,.markdown-body ul,.markdown-body ol,.markdown-body blockquote,.markdown-body pre,.markdown-body table{margin:0 0 9px}.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4,.markdown-body h5,.markdown-body h6{margin:13px 0 7px;color:#10284c;font-size:15.5px;line-height:1.45}.markdown-body ul,.markdown-body ol{padding-left:21px}.markdown-body li+li{margin-top:4px}.markdown-body blockquote{padding:7px 9px;color:#526985;background:#e8f3ffad;border-left:3px solid #83b8f7;border-radius:0 6px 6px 0}.markdown-body code{padding:1px 4px;color:#1e5b9f;font-size:12.5px;word-break:break-word;background:#eef6ff;border-radius:4px}.markdown-body pre{max-width:100%;padding:9px;overflow-x:auto;background:#f3f7fb;border-radius:7px}.markdown-body pre code{padding:0;color:inherit;white-space:pre;background:transparent}.markdown-body a{color:#176fe5;text-decoration:underline;text-underline-offset:2px}.markdown-body table{display:block;width:100%;overflow-x:auto;border-spacing:0;border-collapse:collapse}.markdown-body th,.markdown-body td{min-width:78px;padding:6px 7px;text-align:left;border:1px solid #dbe7f4}.markdown-body th{font-weight:650;background:#f2f7fd}.answer-status{display:inline-flex;align-items:center;margin:11px 0 0;padding:4px 8px;font-size:11px;line-height:1.35;border-radius:12px}.answer-status.is-rejected{color:#7b6645;background:#fff8e8;border:1px solid rgba(176,138,73,.2)}.answer-citations{margin-top:12px;padding-top:10px;color:#657891;border-top:1px solid rgba(95,131,173,.14)}.answer-citations h3{margin:0 0 6px;color:#4c6380;font-size:11.5px;font-weight:650}.answer-citations ul{margin:0;padding-left:17px;font-size:11.5px;line-height:1.55}.answer-citations li+li{margin-top:3px}.assistant-time{color:#8b96aa;font-size:11px;line-height:1.2}.message-retry,.message-feedback{display:flex;flex-wrap:wrap;gap:7px;align-items:center;width:100%;font-size:11.5px;line-height:1.4}.message-retry{padding:8px 9px;color:#9d554e;background:#fff7f5e0;border:1px solid rgba(216,116,104,.17);border-radius:9px}.message-feedback{color:#8390a3}.message-retry button,.message-feedback button{min-height:25px;padding:3px 8px;color:#3176d8;font-size:11.5px;font-weight:600;cursor:pointer;background:#ffffffd1;border:1px solid rgba(49,118,216,.19);border-radius:14px}.message-retry button{color:#a14b43;border-color:#a14b4333}.message-retry button:disabled,.message-feedback button:disabled{cursor:wait;opacity:.55}.is-chat:not(.is-history) .floating-composer{width:auto;min-height:58px;max-width:350px;padding:10px 11px;border-radius:18px}.is-chat:not(.is-history) .floating-composer input{height:40px;padding:0 14px;font-size:16px}.is-chat:not(.is-history) .floating-composer button{width:57px;height:38px;font-size:14px}@media(max-height:780px){.chat-content{padding-top:16px}.floating-composer{bottom:max(8px,env(safe-area-inset-bottom))}}@media(max-width:340px){.welcome-card{grid-template-columns:minmax(0,1fr) 106px;grid-template-rows:auto minmax(174px,190px);padding-right:11px;padding-left:15px}.mascot-stage{height:190px}.quick-question{min-height:40px;font-size:12px}}@media(min-width:600px){body{background:#f4f7fb}.app-shell{box-shadow:0 0 60px #22538b24}}