:root{color:#211746;font-synthesis:none;text-rendering:optimizelegibility;--ink:#211746;--muted:#716b83;--purple:#6d46e8;--purple-dark:#4a239f;--lavender:#eeeaff;--line:#e5e2ee;--mint:#43b98d;--canvas:#f5f6fb;background:#f5f6fb;font-family:MiSans,PingFang SC,Microsoft YaHei,system-ui,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:radial-gradient(circle at 78% 4%, #93d7eb52, transparent 24rem), radial-gradient(circle at 14% 18%, #beadff40, transparent 28rem), var(--canvas);min-width:320px;min-height:100vh;margin:0}button,textarea{font:inherit}button{color:inherit}button:focus-visible,textarea:focus-visible,a:focus-visible{outline-offset:3px;outline:3px solid #6d46e847}.app-shell{min-height:100vh}.site-header{justify-content:space-between;align-items:center;width:min(1180px,100% - 48px);height:78px;margin:0 auto;display:flex}.brand{color:var(--ink);align-items:center;gap:12px;text-decoration:none;display:inline-flex}.brand-mark{background:#ffffffb8;border:1px solid #4a239f33;border-radius:12px;place-items:center;width:38px;height:38px;display:grid;position:relative}.brand-mark i{border:2px solid var(--purple);border-radius:50%;width:20px;height:6px;position:absolute;transform:rotate(-28deg)}.brand-mark i:nth-child(2){transform:rotate(32deg)}.brand-mark i:nth-child(3){transform:rotate(90deg)}.brand>span:last-child{align-items:baseline;gap:8px;display:flex}.brand strong{letter-spacing:.08em;font-size:20px}.brand small{color:var(--purple);letter-spacing:.18em;font-size:11px;font-weight:800}.header-status{color:var(--muted);background:#ffffff94;border:1px solid #2117461a;border-radius:999px;align-items:center;gap:8px;padding:8px 12px;font-size:12px;display:inline-flex}.header-actions{align-items:center;gap:9px;display:flex}.header-status:not(.ready) .status-dot{background:#d9933e;box-shadow:0 0 0 4px #d9933e24}.history-trigger{height:35px;color:var(--muted);cursor:pointer;background:#ffffffb8;border:1px solid #2117461a;border-radius:999px;align-items:center;gap:7px;padding:0 11px;font-size:12px;display:inline-flex}.history-trigger b{background:var(--lavender);min-width:18px;height:18px;color:var(--purple);border-radius:999px;place-items:center;font-size:10px;display:grid}.status-dot,.engine-badge>span{background:var(--mint);border-radius:50%;width:7px;height:7px;box-shadow:0 0 0 4px #43b98d24}main{width:min(1050px,100% - 48px);margin:36px auto 0}.intro{justify-content:space-between;align-items:center;gap:56px;min-height:220px;display:flex}.intro-copy{max-width:680px}.project-tag{color:var(--purple-dark);align-items:center;gap:7px;margin-bottom:18px;font-size:13px;font-weight:700;display:inline-flex}.intro h1{max-width:660px;color:var(--ink);letter-spacing:-.055em;margin:0;font-size:clamp(36px,5vw,64px);font-weight:780;line-height:1.12}.intro p{color:var(--muted);margin:20px 0 0;font-size:17px;line-height:1.8}.signal-map{filter:drop-shadow(0 18px 24px #4a239f21);flex:0 0 244px;justify-content:center;align-items:center;height:160px;display:flex}.signal-core{width:96px;height:96px;color:var(--purple-dark);background:linear-gradient(145deg,#fff,#e8e2ff);border:1px solid #6d46e838;border-radius:31px;place-items:center;font-size:20px;font-weight:800;display:grid;transform:rotate(8deg)}.signal-word{width:38px;height:38px;color:var(--muted);background:#fff;border-radius:50%;place-items:center;font-size:13px;display:grid}.signal-line{background:#c9c2dc;width:34px;height:1px}.capability-nav{z-index:2;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);scrollbar-width:none;background:#ffffffbf;border:1px solid #21174614;border-radius:20px;grid-template-columns:repeat(5,1fr);gap:6px;padding:7px;display:grid;position:relative;box-shadow:0 16px 38px #30225814}.capability-nav::-webkit-scrollbar{display:none}.capability{cursor:pointer;background:0 0;border:0;border-radius:14px;justify-content:center;align-items:center;gap:11px;min-width:0;padding:12px 15px;display:flex}.capability:hover{background:#f7f5fc}.capability.active{background:var(--lavender);color:var(--purple-dark)}.capability-icon{background:#fff;border:1px solid #e0dced;border-radius:11px;place-items:center;width:35px;height:35px;display:grid}.capability>span:last-child{flex-direction:column;align-items:flex-start;display:flex}.capability b{font-size:14px;line-height:1.3}.capability small{color:var(--muted);white-space:nowrap;font-size:11px}.workspace{background:#ffffffe6;border:1px solid #21174614;border-radius:0 0 30px 30px;margin:-10px 18px 0;padding:62px 64px 54px;position:relative;box-shadow:0 28px 90px #3826691c}.workspace-heading{justify-content:space-between;align-items:flex-start;gap:24px;display:flex}.section-kicker{color:var(--purple);font-size:13px;font-weight:750}.workspace h2{letter-spacing:-.025em;margin:8px 0 0;font-size:27px}.engine-badge{border:1px solid var(--line);color:var(--muted);border-radius:999px;align-items:center;gap:9px;margin-top:6px;padding:8px 11px;font-size:11px;display:inline-flex}.composer{background:#fff;border:1px solid #ddd8eb;border-radius:19px;margin-top:26px;padding:10px;box-shadow:0 12px 30px #2d1c5b12}.upload-zone{width:100%;min-height:142px;color:var(--ink);cursor:pointer;background:linear-gradient(145deg,#fbfaff,#f5f2ff);border:1px dashed #c9c1e4;border-radius:17px;flex-direction:column;justify-content:center;align-items:center;gap:7px;margin-top:26px;display:flex}.upload-zone:hover{border-color:var(--purple)}.upload-zone>span{width:48px;height:48px;color:var(--purple);background:#fff;border-radius:14px;place-items:center;display:grid;box-shadow:0 8px 20px #3f277c1a}.upload-zone strong{font-size:14px}.upload-zone small{color:var(--muted);font-size:11px}.upload-zone+.composer{margin-top:12px}.composer:focus-within{border-color:#6d46e899;box-shadow:0 0 0 4px #6d46e817}.composer textarea{resize:vertical;width:100%;min-height:128px;color:var(--ink);background:0 0;border:0;outline:0;padding:13px 15px;font-size:15px;line-height:1.75}.composer textarea::placeholder{color:#a19aaa}.composer-footer{align-items:center;gap:14px;min-height:44px;display:flex}.composer-tools{flex:1}.privacy-note,.tool-button{color:#888192;font-size:12px}.privacy-note{align-items:center;gap:6px;padding-left:10px;display:inline-flex}.tool-button{cursor:pointer;background:#f6f4fb;border:0;border-radius:9px;align-items:center;gap:6px;padding:8px 10px;display:inline-flex}.character-count{color:#aaa4b2;font-size:11px}.run-button{background:var(--purple);color:#fff;cursor:pointer;border:0;border-radius:12px;justify-content:center;align-items:center;gap:8px;min-width:124px;height:42px;font-size:13px;font-weight:700;display:inline-flex;box-shadow:0 9px 18px #6d46e83d}.run-button:hover{background:#5e37d5}.run-button:disabled{opacity:.72;cursor:wait}.spinner{border:2px solid #fff6;border-top-color:#fff;border-radius:50%;width:15px;height:15px;animation:.8s linear infinite spin}.asset-chip{width:fit-content;max-width:100%;color:var(--muted);background:#faf9fd;border:1px solid #e2deec;border-radius:9px;align-items:center;gap:7px;margin:2px 10px 10px;padding:7px 9px;font-size:12px;display:flex}.asset-chip span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.asset-chip small{color:#a19aaa;white-space:nowrap;margin-left:auto}.asset-chip button{cursor:pointer;background:0 0;border:0;padding:1px;display:grid}.error-message{color:#74404a;background:#fff3f5;border-left:3px solid #d94f62;border-radius:8px;margin-top:16px;padding:13px 16px;font-size:13px}.error-message span{color:#a5253d;margin-right:10px;font-weight:750}.output-region{margin-top:28px}.empty-state{grid-template-columns:1fr 1.75fr;align-items:start;gap:22px;padding-top:5px;display:grid}.example-heading{flex-direction:column;gap:4px;padding:9px 0;display:flex}.example-heading span{font-size:13px;font-weight:700}.example-heading small{color:var(--muted);font-size:12px}.example-list{gap:8px;display:grid}.example-list button{border:1px solid var(--line);color:#5e576b;text-align:left;cursor:pointer;background:#fbfafd;border-radius:11px;justify-content:space-between;align-items:center;width:100%;padding:12px 14px;font-size:12px;display:flex}.example-list button:hover{color:var(--purple-dark);border-color:#c9bdf4}.example-list svg{transform:rotate(45deg)}.loading-state{min-height:160px;color:var(--muted);border:1px dashed #d9d3e9;border-radius:16px;justify-content:center;align-items:center;gap:25px;display:flex}.loading-state>div{flex-direction:column;gap:5px;display:flex}.loading-state strong{color:var(--ink);font-size:14px}.loading-state span{font-size:12px}.thinking-orbit{width:48px;height:48px;animation:2.5s linear infinite spin;position:relative}.thinking-orbit i{background:var(--purple);border-radius:50%;width:10px;height:10px;position:absolute}.thinking-orbit i:first-child{top:0;left:19px}.thinking-orbit i:nth-child(2){background:#78cfe2;bottom:5px;left:2px}.thinking-orbit i:nth-child(3){background:var(--mint);bottom:5px;right:2px}.result-card{background:linear-gradient(145deg,#fff 55%,#f8f6ff);border:1px solid #ded8ed;border-radius:17px;padding:25px 26px 19px}.result-card header{align-items:center;gap:13px;display:flex}.result-symbol{background:var(--lavender);width:42px;height:42px;color:var(--purple);border-radius:13px;place-items:center;display:grid}.result-card header span{color:var(--purple);font-size:11px;font-weight:700}.result-card h3{margin:3px 0 0;font-size:19px}.result-card>p{color:#514a5e;white-space:pre-wrap;margin:22px 0;font-size:14px;line-height:1.9}.result-card ul{grid-template-columns:repeat(3,1fr);gap:8px;margin:0;padding:0;list-style:none;display:grid}.result-card li{color:#5e5670;background:#f3f0fb;border-radius:9px;padding:10px 12px;font-size:11px}.result-card li:before{content:"";background:var(--mint);vertical-align:1px;border-radius:50%;width:5px;height:5px;margin-right:7px;display:inline-block}.result-card footer{color:#9b95a5;border-top:1px solid #ece8f2;justify-content:space-between;gap:12px;margin-top:18px;padding-top:13px;font-size:10px;display:flex}.transcript{border-top:1px solid #ece8f2;margin-top:18px}.transcript summary{color:var(--purple-dark);cursor:pointer;padding:14px 0 8px;font-size:12px;font-weight:700}.transcript p{color:#5d5669;white-space:pre-wrap;background:#f6f4fb;border-radius:9px;max-height:210px;margin:0;padding:13px;font-size:12px;line-height:1.8;overflow:auto}.learning-loop{background:#f9f8fddb;border:1px solid #ded8ed;border-radius:17px;margin-top:20px;padding:25px}.learning-loop-heading{justify-content:space-between;align-items:center;gap:24px;display:flex}.learning-loop-heading h3{margin:5px 0 0;font-size:19px}.learning-steps{color:#9992a4;white-space:nowrap;align-items:center;font-size:10px;display:flex}.learning-steps span{align-items:center;gap:5px;display:inline-flex}.learning-steps b{color:#968f9e;background:#fff;border:1px solid #d9d4e2;border-radius:50%;place-items:center;width:21px;height:21px;font-size:9px;display:grid}.learning-steps i{background:#ddd8e5;width:20px;height:1px;margin:0 6px}.learning-steps span.active{color:var(--purple-dark);font-weight:700}.learning-steps span.active b{background:var(--lavender);color:var(--purple);border-color:#b8a5f4}.learning-steps span.complete{color:#4c8a74}.learning-steps span.complete b{border-color:var(--mint);background:var(--mint);color:#fff}.learning-error{color:#8d3041;background:#fff1f3;border-radius:9px;align-items:center;gap:7px;margin-top:15px;padding:10px 12px;font-size:12px;display:flex}.learning-grid{grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);align-items:start;gap:14px;margin-top:20px;display:grid}.learning-panel{background:#fff;border:1px solid #e3dfeb;border-radius:14px;min-width:0;overflow:hidden}.panel-title{border-bottom:1px solid #eeebf2;align-items:center;gap:10px;min-height:68px;padding:14px 15px;display:flex}.panel-title>span{background:var(--lavender);width:35px;height:35px;color:var(--purple);border-radius:10px;flex:none;place-items:center;display:grid}.panel-title>div{flex-direction:column;gap:3px;display:flex}.panel-title strong{font-size:13px}.panel-title small{color:#918a9b;font-size:10px;line-height:1.45}.learning-placeholder{min-height:190px;color:var(--muted);justify-content:center;align-items:center;gap:8px;font-size:11px;display:flex}.spinner.purple{border-color:#6d46e838;border-top-color:var(--purple);width:14px;height:14px}.question-suggestions{min-height:190px;padding:18px 15px}.question-suggestions p{color:#6f6879;margin:0 0 12px;font-size:12px}.question-suggestions button{color:#625a70;text-align:left;cursor:pointer;background:#faf9fd;border:1px solid #e6e1ed;border-radius:9px;width:100%;margin-top:7px;padding:9px 10px;font-size:10px}.question-suggestions button:hover{color:var(--purple-dark);border-color:#cbbef2}.conversation{background:#fcfbfe;flex-direction:column;gap:13px;height:260px;padding:15px;display:flex;overflow-y:auto}.message{grid-template-columns:28px minmax(0,1fr);align-items:start;gap:7px;display:grid}.message>span{background:var(--lavender);width:28px;height:28px;color:var(--purple);border-radius:9px;place-items:center;font-size:9px;font-weight:800;display:grid}.message p{color:#4f485b;white-space:pre-wrap;background:#f1eef9;border-radius:3px 11px 11px;margin:0;padding:9px 11px;font-size:11px;line-height:1.7}.message.user{grid-template-columns:minmax(0,1fr) 28px}.message.user>span{color:#278061;background:#e4f5ef;order:2}.message.user p{background:#eef8f4;border-radius:11px 3px 11px 11px;order:1}.message.pending p{color:#8d8698}.question-composer{border:1px solid #ded9e8;border-radius:11px;align-items:flex-end;gap:7px;margin:11px;padding:7px 7px 7px 11px;display:flex}.question-composer:focus-within{border-color:#b9a8ed;box-shadow:0 0 0 3px #6d46e814}.question-composer textarea{resize:none;min-width:0;color:var(--ink);border:0;outline:0;flex:1;padding:3px 0;font-size:11px;line-height:1.6}.question-composer button{background:var(--purple);color:#fff;cursor:pointer;border:0;border-radius:9px;flex:none;place-items:center;width:34px;height:34px;display:grid}.question-composer button:disabled{opacity:.55;cursor:not-allowed}.quiz-empty{text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:264px;padding:28px 20px;display:flex}.quiz-empty>span{width:48px;height:48px;color:var(--purple);background:#f0ecff;border-radius:15px;place-items:center;display:grid}.quiz-empty strong{margin-top:13px;font-size:13px}.quiz-empty p{max-width:270px;color:var(--muted);margin:6px 0 15px;font-size:10px;line-height:1.6}.quiz-empty button,.quiz-header button{cursor:pointer;border:0;border-radius:9px;justify-content:center;align-items:center;gap:7px;display:inline-flex}.quiz-empty button{background:var(--purple);color:#fff;min-width:136px;min-height:36px;padding:8px 13px;font-size:11px;font-weight:700}.quiz-empty button:disabled,.quiz-header button:disabled{opacity:.6;cursor:wait}.quiz-content{padding:14px}.quiz-header{justify-content:space-between;align-items:center;gap:12px;display:flex}.quiz-header>div{min-width:0;color:var(--purple-dark);align-items:center;gap:7px;display:flex}.quiz-header strong{text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.quiz-header button{color:#756d80;background:#f3f0fa;flex:none;padding:7px 9px;font-size:9px}.quiz-question{border:0;margin:15px 0 0;padding:0}.quiz-question legend{color:#4c4557;gap:8px;width:100%;font-size:11px;font-weight:650;line-height:1.55;display:flex}.quiz-question legend b{background:var(--lavender);width:19px;height:19px;color:var(--purple);border-radius:6px;flex:none;place-items:center;font-size:9px;display:grid}.quiz-options{gap:6px;margin-top:8px;display:grid}.quiz-options button{color:#645d6d;text-align:left;cursor:pointer;background:#fff;border:1px solid #e6e2ed;border-radius:8px;grid-template-columns:22px 1fr auto;align-items:center;gap:7px;width:100%;min-height:33px;padding:7px 9px;font-size:10px;display:grid}.quiz-options button:hover:not(:disabled){background:#fbfaff;border-color:#c9bbf1}.quiz-options button>span{color:#837b8d;background:#f3f1f7;border-radius:6px;place-items:center;width:21px;height:21px;font-size:9px;display:grid}.quiz-options button.correct{color:#276b53;background:#f0fbf7;border-color:#8bd0b6}.quiz-options button.correct>span{color:#27795c;background:#d8f3e9}.quiz-options button.wrong{color:#963c4b;background:#fff4f5;border-color:#e5a5af}.quiz-options button.wrong>span{color:#a0394a;background:#f8dfe3}.quiz-explanation{color:#527064;background:#f3f8f6;border-radius:7px;margin:7px 0 0;padding:8px 10px;font-size:9px;line-height:1.6}.drawer-backdrop{z-index:20;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#1b14303d;border:0;position:fixed;inset:0}.history-drawer{z-index:21;visibility:hidden;pointer-events:none;background:#fbfaff;border-left:1px solid #2117461a;width:min(390px,92vw);height:100vh;padding:22px;transition:transform .22s,visibility 0s linear .22s;position:fixed;top:0;right:0;transform:translate(105%);box-shadow:-24px 0 70px #26194b29}.history-drawer.open{visibility:visible;pointer-events:auto;transition-delay:0s;transform:translate(0)}.history-drawer>header{justify-content:space-between;align-items:flex-start;height:45px;display:flex}.history-drawer>header>div{align-items:center;gap:9px;display:flex}.history-drawer>header button{cursor:pointer;background:0 0;border:0;border-radius:8px;padding:6px;display:grid}.history-list{gap:8px;margin-top:12px;display:grid}.history-list>button{text-align:left;cursor:pointer;background:#fff;border:1px solid #e6e2ed;border-radius:12px;grid-template-columns:34px 1fr auto;align-items:center;gap:11px;width:100%;padding:12px;display:grid}.history-list>button:hover{border-color:#cfc3f2}.history-kind{background:var(--lavender);width:34px;height:34px;color:var(--purple);border-radius:10px;place-items:center;font-size:12px;font-weight:800;display:grid}.history-copy{flex-direction:column;gap:5px;min-width:0;display:flex}.history-copy strong{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;font-size:12px;overflow:hidden}.history-copy small{color:#928b9d;text-overflow:ellipsis;white-space:nowrap;align-items:center;gap:4px;font-size:10px;display:flex;overflow:hidden}.history-list>button>svg{color:#aaa4b2}.history-empty{color:#9891a2;text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:10px;min-height:240px;font-size:12px;display:flex}.site-footer{color:#9892a1;justify-content:space-between;width:min(1050px,100% - 48px);margin:32px auto 0;padding:26px 0 36px;font-size:11px;display:flex}.visually-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}@keyframes spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;animation-duration:.01ms!important}}@media (width<=800px){.signal-map{display:none}.intro{min-height:200px}.capability-nav{scroll-snap-type:x proximity;grid-template-columns:repeat(5,minmax(130px,1fr));justify-content:start;overflow-x:auto}.capability{scroll-snap-align:start}.workspace{margin-inline:8px;padding:50px 32px 38px}.learning-grid{grid-template-columns:1fr}}@media (width<=560px){.site-header,main,.site-footer{width:min(100% - 28px,1050px)}.site-header{height:68px}.header-status{justify-content:center;min-width:58px;padding:8px;font-size:0}.header-status:after{content:"未配置";font-size:10px}.header-status.ready:after{content:"已配置"}.history-trigger{padding-inline:9px;font-size:0}.history-trigger b{display:none}main{margin-top:18px}.intro{align-items:flex-start;min-height:192px;padding-top:25px}.intro h1{font-size:38px;line-height:1.18}.intro p{margin-top:14px;font-size:14px}.capability-nav{border-inline:0;border-radius:0;margin-inline:-14px;padding-inline:14px}.workspace{border-inline:0;border-radius:0 0 24px 24px;margin:0 -14px;padding:42px 20px 34px}.upload-zone{min-height:126px}.workspace-heading{align-items:center}.engine-badge{display:none}.composer-footer{flex-wrap:wrap}.composer-tools{min-width:45%}.run-button{order:3;width:100%}.empty-state{grid-template-columns:1fr;gap:8px}.result-card{padding-inline:18px}.result-card ul{grid-template-columns:1fr}.result-card footer,.site-footer{flex-direction:column}.learning-loop{padding:18px}.learning-loop-heading{flex-direction:column;align-items:flex-start;gap:15px}.learning-steps{justify-content:space-between;width:100%}.learning-steps i{flex:1;min-width:6px}.learning-steps span{flex-direction:column}.conversation{height:230px}}
