:root{color-scheme:light;--paper:#faf9f6;--surface:#fff;--ink:#243749;--muted:#657384;--line:#e0e5e8;--primary:#284e68;--primary-hover:#173e57;--blue-tint:#edf3f6;--font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.7 var(--font)}button,input,textarea{font:inherit;color:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #668ba4;outline-offset:4px}::selection{background:#d7e5ed;color:#173d55}textarea,input{caret-color:var(--primary)}[hidden]{display:none!important}.icon{display:inline-flex;width:19px;height:19px;align-items:center;justify-content:center;flex:0 0 auto}.icon svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linejoin:round;stroke-linecap:round}.icon.small{width:14px;height:14px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;top:-80px;left:20px;padding:10px 18px;background:var(--primary);color:#fff;z-index:100}.skip-link:focus{top:15px}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:10px;padding:11px 19px;min-height:44px;white-space:nowrap;font-size:13px;font-weight:500}.primary{border:1px solid var(--primary);background:var(--primary);color:#fff}.primary:hover{background:var(--primary-hover)}.secondary{border:1px solid #c9d5de;background:#fff;color:var(--primary)}.secondary:hover{background:var(--blue-tint)}button:active:not(:disabled),a.primary:active{transform:translateY(1px)}button:disabled{opacity:.65;cursor:wait}.quiet{background:none;border:0;padding:4px 0;color:var(--muted)}.quiet:hover{color:var(--primary)}.text-button{display:inline-flex;align-items:center;gap:6px;border:0;background:none;padding:3px 0;font-size:12px;color:var(--primary)}.text-button:hover{text-decoration:underline;text-underline-offset:4px}.icon-button{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;background:transparent;border:0;border-radius:8px}.icon-button:hover{background:var(--blue-tint)}
.site-header{height:88px;display:flex;align-items:center;justify-content:space-between;gap:30px;padding:0 clamp(24px,4.1vw,76px);background:#fdfcf9;border-bottom:1px solid #e6e6df;position:relative;z-index:10}.platform-brand{display:flex;align-items:center;gap:14px;flex:0 1 auto}.platform-brand>img{height:45px;width:42px;object-fit:contain}.platform-brand strong{font-family:"Songti SC","STSong",serif;font-size:24px;font-weight:600;letter-spacing:1px;line-height:1.3;display:block}.platform-brand span{font-size:11px;color:#657482;display:block;letter-spacing:1px;margin-top:6px}.account-nav{display:flex;align-items:center;gap:25px;flex:0 0 auto}.my-space{display:flex;align-items:center;gap:7px;font-size:12px}.my-space>.icon{height:16px;width:16px}.account-divider{display:block;height:16px;width:1px;background:#dbe0e3}.login-button{background:none;border:0;font-size:13px;padding:8px 0}.register-button{background:var(--primary);color:#fff;border:1px solid var(--primary);border-radius:7px;padding:7px 20px;font-size:13px}.register-button:hover{background:var(--primary-hover)}
.hero{position:relative;isolation:isolate;min-height:625px;overflow:hidden;background:#f3efe6}.hero-art{position:absolute;inset:0;z-index:-2;background-image:url('assets/hero-classical-modern.jpg');background-size:cover;background-position:center center}.hero:after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,#faf9f626 0%,#faf9f60a 62%,#faf9f6 100%);pointer-events:none}.hero-content{max-width:1072px;margin:auto;padding:42px 34px 30px;text-align:center}.hero-heading h1{font-family:"Songti SC","STSong",serif;font-size:34px;letter-spacing:2px;line-height:1.5;font-weight:500;margin:0 0 8px;color:#2e4352;text-wrap:balance}.hero-heading p{margin:0 0 27px;font-size:13px;color:#586c7a;letter-spacing:.8px}.ask-box{text-align:left;background:#fffffffa;border-radius:16px;box-shadow:0 14px 42px #243c4d18;overflow:hidden;position:relative;transition:box-shadow .2s}.ask-box:focus-within{box-shadow:0 15px 44px #243c4d27}.ask-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 27px 0}.ask-title{display:flex;align-items:center;gap:9px;font-size:13px;color:#36576e;font-weight:500;letter-spacing:.5px}.ask-title>.icon{width:17px;height:17px}.scope-control{display:flex;align-items:center;gap:7px;padding:5px 8px;background:#f4f6f7;border:0;border-radius:6px;color:#5d7485;font-size:11px}.scope-control>.icon{width:14px;height:14px}#scope-count{padding:0 4px;min-width:17px;background:#e1eaf0;border-radius:3px;color:#3c5f78;font-size:10px}#question{display:block;width:100%;min-height:124px;border:0;resize:vertical;background:none;padding:27px 28px 12px;font-size:20px;line-height:1.8;color:#263f50;outline:0}#question::placeholder{color:#667a88;font-size:18px}#question:focus-visible{box-shadow:inset 3px 0 #6d91aa;outline:0}.range-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:0 27px 19px;min-height:53px}.selected-scope{display:flex;align-items:center;gap:7px;border:1px solid #d9e3e9;border-radius:6px;background:#f5f8fa;padding:5px 9px;font-size:11px;color:#526d81;max-width:65%}.selected-scope>.icon{width:14px;height:14px}.selected-scope>span:nth-child(2){overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.range-explanation{font-size:11px;color:#697e8d}.ask-footer{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:17px 24px 19px;border-top:1px solid #e7ecef;background:#fbfcfd}.personal-actions{display:flex;align-items:center;gap:22px}.attach-button,.personal-button{display:flex;align-items:center;gap:7px;background:none;border:0;padding:6px 0;font-size:12px;color:#4b677d}.personal-button{color:#62798a}.personal-actions .icon{width:17px;height:17px}.personal-actions button:hover{color:#1d4c6e}.search-submit{min-width:139px;padding:10px 18px;font-size:14px;min-height:44px}.suggestions{display:flex;justify-content:center;align-items:center;gap:9px;margin-top:22px;flex-wrap:wrap}.suggestions>span{font-size:11px;color:#486173;margin-right:3px}.suggestions button{display:flex;align-items:center;gap:10px;border:1px solid #fbfcf999;border-radius:6px;background:#fffdf9e8;color:#4e6576;padding:6px 11px;font-size:11px;min-height:32px}.suggestions button:hover{background:#fff;border-color:#9fb4c3;color:#2b526e}.suggestions button>.icon{width:12px;height:12px;opacity:.8}.hero-note{font-size:11px;color:#3d586d;margin:16px 0 0;letter-spacing:.5px;text-shadow:0 1px 3px #fff}.validation{font-size:12px;color:#a03934;padding:0 27px 18px;background:#fbfcfd;margin:0}.systems{padding:18px 44px 42px;max-width:1380px;margin:auto}.systems-heading{text-align:center;margin-bottom:27px}.systems-heading h2{font-family:"Songti SC","STSong",serif;font-size:24px;letter-spacing:1px;font-weight:500;line-height:1.5;margin:0 0 8px;color:#2d4354}.systems-heading>p{font-size:12px;color:#607381;margin:0}.systems-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid #dce2e5;border-bottom:1px solid #dce2e5;padding:26px 0 25px}.system-panel{padding:0 29px;display:flex;flex-direction:column;min-width:0}.system-panel+.system-panel{border-left:1px solid #dce2e5}.system-panel:first-child{padding-left:9px}.system-panel:last-child{padding-right:9px}.system-top{display:flex;align-items:center;gap:13px;margin-bottom:11px}.system-icon{display:flex;align-items:center;justify-content:center;width:35px;height:35px;background:#eaf0f3;border-radius:9px;color:#45647a}.system-icon .icon{width:21px;height:21px}.system-top h3{font-family:"Songti SC","STSong",serif;font-size:22px;font-weight:500;letter-spacing:.7px;line-height:1.5;margin:0}.system-panel>p{font-size:12px;line-height:1.9;color:#5d7181;margin:0 0 16px;max-width:29em}.system-links{display:flex;flex-wrap:wrap;gap:8px 14px;margin:0 0 17px}.system-links button{background:none;border:0;padding:0;color:#546f84;font-size:11px;line-height:1.8}.system-links button:hover{text-decoration:underline;text-underline-offset:4px}.system-enter{margin-top:auto;padding:5px 0 0;border:0;background:transparent;display:flex;align-items:center;gap:13px;color:#284e68;font-size:12px;text-align:left}.system-enter>.icon{width:17px;height:17px}.system-enter:hover{gap:18px}.site-footer{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap;max-width:1288px;margin:0 auto;padding:0 0 24px;color:#607482;font-size:11px}.footer-brand{display:flex;align-items:center;gap:10px}.footer-brand>img{height:28px;width:28px;object-fit:contain}.site-footer>div:last-of-type{display:flex;align-items:center;gap:24px}.site-footer a{display:flex;align-items:center;gap:5px}.site-footer p{font-size:10px;width:100%;text-align:center;margin:0;color:#687c8a}.site-footer button{font-size:11px}.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%);padding:12px 20px;color:#fff;background:#284e68;border-radius:9px;box-shadow:0 8px 24px #15394d26;z-index:100;font-size:12px;max-width:calc(100% - 32px);text-align:center}
.my-library-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.create-tile{display:flex;align-items:center;gap:12px;text-align:left;background:#f2f6f8;border:1px dashed #bccdd8;border-radius:12px;min-height:120px;padding:20px;color:#43637a}.create-tile>.icon{width:28px;height:28px}.create-tile strong{font-size:13px;font-weight:500;display:block}.create-tile small{font-size:11px;color:#637a8a;display:block;margin-top:4px}.workspace-intro{padding:20px;border:1px solid var(--line);border-radius:12px}.workspace-intro h3{font-size:14px;font-weight:500;margin:0 0 8px}.workspace-intro p{font-size:12px;color:#627888;margin:0}.mini-steps{display:none}.knowledge-tile{padding:18px;border:1px solid #dbe4ea;border-radius:12px;background:#fff;text-align:left;display:flex;flex-direction:column;gap:10px}.tile-top{display:flex;align-items:center;justify-content:space-between;color:#56758a}.tile-top>span:last-child{font-size:10px}.knowledge-tile strong{font-size:13px;font-weight:500;overflow-wrap:anywhere}.knowledge-tile small{font-size:11px;color:#607b8e}.workspace-bottom{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-top:18px;font-size:11px;color:#5f7789}.workspace-bottom>span{display:flex;align-items:center;gap:5px}.workspace-dialog{width:min(850px,calc(100% - 32px))!important}.workspace-dialog h2>span{font-family:var(--font);font-size:12px;background:#edf3f6;color:#5d788b;padding:2px 7px;vertical-align:middle;border-radius:5px}.system-directory{display:grid;gap:12px;margin-top:20px}.directory-item{padding:15px;border:1px solid #dbe4ea;border-radius:10px;display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:13px;background:#fff}.directory-item strong{display:block;font-weight:500}.directory-item small{font-size:11px;color:#627b8e;display:block;margin-top:3px}.directory-item:hover{background:#f4f8fa}.directory-item .icon{color:#58758a}.scope-separator{font-size:12px;font-weight:500;color:#4e6c81;margin:16px 0 0}.scope-option small{max-width:33em}.auth-dialog{max-width:510px}.auth-dialog .primary{margin-top:10px}.help-content h3{font-size:14px;font-weight:500}.help-content p{font-size:12px;color:#5b7488}
@media(min-width:1700px){.hero{min-height:680px}.hero-content{padding-top:59px}.hero-heading h1{font-size:38px}.hero-heading p{margin-bottom:31px}#question{min-height:140px}.range-row{padding-bottom:24px}.ask-footer{padding-top:21px;padding-bottom:23px}.systems{padding-top:23px}}
@media(max-width:1100px){.site-header{padding:0 30px;height:82px}.platform-brand strong{font-size:21px}.platform-brand span{font-size:10px}.platform-brand>img{width:37px;height:40px}.account-nav{gap:20px}.hero-content{padding:40px 45px 28px}.hero-heading h1{font-size:30px}.hero{min-height:610px}.systems{padding:18px 30px 35px}.system-panel{padding-left:22px;padding-right:22px}.system-top{gap:9px}.system-top h3{font-size:20px}.system-panel>p{font-size:11px}.system-links{gap:8px 12px}.site-footer{padding-left:30px;padding-right:30px}.my-space{display:none}.account-divider{display:none}}
@media(max-width:760px){.site-header{height:76px;padding:0 20px;gap:15px}.platform-brand{gap:10px}.platform-brand>img{width:32px;height:35px}.platform-brand strong{font-size:17px;letter-spacing:.5px}.platform-brand span{font-size:9px;letter-spacing:0}.account-nav{gap:15px}.login-button,.register-button{font-size:12px}.register-button{padding:6px 14px}.hero-content{padding:32px 25px 30px}.hero-heading h1{font-size:27px;letter-spacing:1px}.hero-heading p{font-size:12px;margin-bottom:23px}.hero{min-height:590px}.hero-art{background-size:auto 100%;background-position:center center}.ask-top{padding:18px 20px 0}.ask-title{font-size:12px}.scope-control{font-size:10px}.ask-title .icon{height:15px;width:15px}#question{font-size:18px;min-height:126px;padding:23px 21px 12px}#question::placeholder{font-size:17px}.range-row{padding-left:20px;padding-right:20px;gap:9px}.range-explanation{font-size:10px}.ask-footer{padding:16px 18px 17px}.personal-actions{gap:17px}.personal-actions button{font-size:11px}.search-submit{font-size:12px;min-width:116px}.suggestions{gap:8px;justify-content:center;margin-top:18px}.suggestions button{font-size:10px;padding:6px 9px}.hero-note{font-size:10px;margin-top:16px}.systems{padding:18px 25px 30px}.systems-heading{margin-bottom:20px}.systems-heading h2{font-size:21px}.systems-heading p{font-size:11px}.systems-grid{grid-template-columns:1fr;padding:0;border-bottom:0}.system-panel,.system-panel:first-child,.system-panel:last-child{padding:22px 8px;display:grid;grid-template-columns:1fr auto;gap:0 20px;border-bottom:1px solid #dce2e5}.system-panel+.system-panel{border-left:0}.system-top{grid-column:1;margin:0 0 8px}.system-top h3{font-size:22px}.system-panel>p{grid-column:1;margin-bottom:9px;font-size:12px;max-width:none}.system-links{grid-column:1;margin:0;font-size:11px}.system-enter{grid-column:2;grid-row:1/4;font-size:0;align-self:center;padding:10px;background:#eaf0f4;border-radius:8px}.system-enter>.icon{height:20px;width:20px}.system-enter:hover{gap:13px;background:#e1ebf2}.system-icon{width:30px;height:30px}.system-icon .icon{height:19px;width:19px}.site-footer{padding:0 25px 20px;font-size:10px}.site-footer>div:last-of-type{gap:16px}.site-footer p{text-align:left;font-size:10px}.site-footer .footer-brand span{font-size:10px}.site-footer button{font-size:10px}}
@media(max-width:500px){.site-header{height:72px;padding:0 16px;gap:8px}.platform-brand{gap:8px;min-width:0}.platform-brand>img{width:29px;height:33px}.platform-brand strong{font-size:14px;letter-spacing:0;max-width:205px}.platform-brand span{font-size:9px;margin-top:4px;max-width:205px}.account-nav{gap:12px}.register-button{padding:5px 10px;font-size:11px}.login-button{font-size:11px}.hero-content{padding:29px 16px 25px}.hero-heading h1{font-size:26px;letter-spacing:.5px;max-width:12em;margin:0 auto 9px;line-height:1.6}.hero-heading p{font-size:11px;max-width:24em;margin:0 auto 23px;line-height:1.8}.hero{min-height:650px}.hero-art{background-size:auto 100%;background-position:center center;opacity:.85}.hero:after{background:linear-gradient(180deg,#faf9f633,#faf9f633 76%,#faf9f6 100%)}.ask-box{border-radius:13px}.ask-top{padding:17px 16px 0;gap:10px}.ask-title{font-size:11px;gap:6px;letter-spacing:0}.scope-control{font-size:0;gap:5px;padding:5px 6px}.scope-control #scope-count{font-size:10px}.scope-control>.icon{height:14px;width:14px}#question{min-height:139px;font-size:17px;padding:23px 17px 15px}#question::placeholder{font-size:16px}.range-row{padding:0 16px 17px;gap:7px;min-height:50px}.selected-scope{font-size:10px;padding:5px 7px;max-width:100%}.range-explanation{width:100%;font-size:10px;text-align:left}.ask-footer{gap:10px;padding:14px 14px 15px}.personal-actions{display:flex;flex-direction:column;align-items:flex-start;gap:3px}.personal-actions button{font-size:11px;min-height:28px;padding:3px 0}.personal-actions .icon{width:15px;height:15px}.search-submit{font-size:12px;min-width:110px;min-height:42px;padding:9px 12px}.search-submit .icon{width:16px;height:16px}.suggestions{justify-content:flex-start;gap:7px;margin-top:18px}.suggestions>span{width:100%;text-align:left;font-size:10px;margin-left:3px}.suggestions button{font-size:10px;min-height:34px;gap:7px;padding:5px 9px}.suggestions button .icon{width:11px;height:11px}.hero-note{font-size:9px;line-height:1.9;margin:16px 7px 0;color:#334e62;letter-spacing:0}.systems{padding:19px 20px 25px}.systems-heading h2{font-size:20px;max-width:16em;margin:0 auto 8px;line-height:1.7}.systems-heading p{font-size:11px;line-height:1.9}.system-panel,.system-panel:first-child,.system-panel:last-child{padding:22px 0;gap:0 13px}.system-top h3{font-size:20px}.system-panel>p{font-size:11px}.system-links{gap:7px 12px}.system-links button{font-size:10px;min-height:24px}.system-enter{padding:8px}.site-footer{padding-left:20px;padding-right:20px;gap:14px}.footer-brand{gap:8px}.footer-brand>img{height:24px;width:24px}.site-footer>div:last-of-type{width:100%;justify-content:flex-start}.my-library-grid{grid-template-columns:1fr}.workspace-bottom{flex-direction:column}.toast{bottom:20px;font-size:11px}}
@media(max-width:355px){.platform-brand strong{font-size:12px;max-width:160px}.platform-brand span{font-size:8px;max-width:160px}.platform-brand>img{width:25px;height:30px}.account-nav{gap:9px}.register-button{padding:5px 8px}.hero-heading h1{font-size:24px}.hero-content{padding-left:13px;padding-right:13px}.ask-title{font-size:10px}.ask-top{padding-left:14px;padding-right:14px}.personal-actions button{font-size:10px}.search-submit{min-width:100px}.hero-note{font-size:9px}.system-top h3{font-size:19px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

.dialog{border:1px solid #dce3ed;border-radius:18px;background:#fff;color:var(--ink);width:min(620px,calc(100% - 32px));max-height:calc(100dvh - 50px);padding:28px;box-shadow:0 25px 80px #172a4a26;overflow-y:auto}.dialog::backdrop{background:#1d2b4266;backdrop-filter:blur(4px)}.dialog-head,.research-top{display:flex;justify-content:space-between;align-items:flex-start;gap:14px}.dialog-kicker{font-size:11px;color:#647287;letter-spacing:1px}.dialog h2{font-size:23px;font-weight:500;line-height:1.5;margin:4px 0 0;font-family:"Songti SC","STSong",serif}.dialog-head .icon-button{flex:0 0 auto;color:#647287}.dialog-intro{font-size:13px;color:#647287;margin:12px 0 22px}.dialog-actions{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}.dialog-actions .primary{font-size:12px}.small-note{font-size:11px;color:#647287}.scope-options{display:grid;gap:9px}.scope-option{display:flex;align-items:flex-start;gap:12px;padding:14px 15px;border:1px solid var(--line);border-radius:9px;cursor:pointer}.scope-option:has(input:checked){border-color:#91aaca;background:#f5f8fc}.scope-option input{margin-top:5px;accent-color:var(--primary);width:15px;height:15px}.scope-option strong{font-weight:500;font-size:13px;display:block}.scope-option small{display:block;color:#647287;font-size:11px;margin-top:3px}.scope-option .scope-status{margin-left:auto;font-size:11px;color:#647287;white-space:nowrap;align-self:center}.field-label{display:block;font-size:12px;margin:18px 0 7px;color:#52627a}.field-label>span{font-size:11px;color:#647287;margin-left:5px}#create-form>input,#create-form>textarea{width:100%;background:#fafbfd;border:1px solid #dbe2ec;border-radius:8px;padding:10px 12px;color:var(--ink);font-size:13px}#create-form>textarea{resize:vertical}.file-area{display:flex;align-items:center;justify-content:center;flex-direction:column;padding:21px;border:1px dashed #c9d5e5;border-radius:10px;background:#f8fafd;margin-top:20px;cursor:pointer;gap:4px}.file-area>.icon{color:#647287;margin-bottom:3px}.file-area strong{font-size:12px;font-weight:500}.file-area>span:not(.icon){font-size:11px;color:#647287}.file-area input{width:100%;font-size:11px;margin:8px auto;color:#647287;max-width:300px}.file-preview{list-style:none;padding:0;display:grid;gap:5px}.file-preview li{display:flex;gap:8px;align-items:center;font-size:11px;color:#647287;overflow-wrap:anywhere}.file-preview .icon{width:14px;height:14px}.visibility{padding:0;margin:20px 0 0;border:0}.visibility legend{font-size:12px;color:#52627a;margin-bottom:8px}.visibility>label{display:flex;align-items:center;gap:10px;padding:11px 0;border-bottom:1px solid #eef1f6;cursor:pointer}.visibility input{accent-color:var(--primary)}.visibility label>span:not(.icon){flex:1}.visibility strong{font-size:12px;font-weight:500;display:block}.visibility small{font-size:11px;color:#647287;display:block}.visibility .icon{width:16px;height:16px;color:#647287}.consent{padding:12px;background:#f2f6fb;margin-top:14px;border-radius:8px;color:#647287;font-size:11px}.consent label{display:flex;align-items:flex-start;gap:7px}.consent p{margin:8px 0 0 23px;font-size:11px}.validation{color:#ad3434;font-size:12px;padding:0 20px 14px}.dialog .validation{padding:0;margin:12px 0 0}.library-facts{display:grid;grid-template-columns:85px 1fr;gap:13px;font-size:13px;margin:24px 0}.library-facts dt{color:#647287}.library-facts dd{margin:0;color:#5d6e84}.detail-note{background:#f5f7fa;padding:15px 17px;border-radius:9px;font-size:12px;color:#647287;line-height:1.9}.detail-actions{display:flex;gap:12px;margin-top:23px;flex-wrap:wrap}.detail-actions>*{font-size:12px}.shared-empty{text-align:center;border:1px dashed #cad5e3;border-radius:12px;padding:35px;background:#f4f7fb}.shared-empty>.icon{width:34px;height:34px;color:#647287}.shared-empty h3{font-size:18px;font-weight:500;margin:12px 0 8px}.shared-empty p{max-width:500px;margin:0 auto 20px;color:#647287;font-size:12px}.shared-empty .small-note{display:block;margin-top:15px}.shared-empty>.primary{font-size:12px}.research-dialog{width:min(980px,calc(100% - 35px));padding:0}.research-top{padding:24px 28px;border-bottom:1px solid var(--line)}.research-top h2{font-size:22px}.research-layout{display:grid;grid-template-columns:240px 1fr;min-height:440px}.source-panel{background:#f6f8fb;padding:24px;border-right:1px solid var(--line);border-bottom-left-radius:18px}.source-heading{font-size:12px;display:flex;align-items:center;gap:8px;color:#647287;margin-bottom:20px}.source-heading .icon{width:16px;height:16px}.source-item{background:white;border:1px solid #e0e6ef;border-radius:9px;padding:12px;margin-bottom:10px}.source-item strong{font-weight:500;font-size:12px;display:block}.source-item small{font-size:11px;color:#647287;display:block;margin-top:4px}.source-note{font-size:11px;color:#647287;display:flex;gap:6px;align-items:flex-start;margin-top:18px}.answer-panel{padding:24px 28px;min-width:0}.question-bubble{padding:14px 17px;background:#edf3fb;border-radius:12px 12px 3px 12px;font-size:14px;color:#3e5c84;margin-bottom:22px;overflow-wrap:anywhere}.answer-notice{font-size:11px;color:#647287;margin-bottom:14px}.answer-panel h3{font-size:16px;font-weight:500;margin:15px 0 10px}.answer-panel p{font-size:12px;color:#647287;line-height:1.9}.evidence{border:1px solid #dde5ef;border-radius:10px;padding:16px;margin:12px 0}.evidence-top{display:flex;align-items:center;gap:9px;font-size:12px;font-weight:500}.citation-index{font-size:11px;background:#edf2fa;color:#647287;border-radius:3px;padding:1px 6px}.evidence blockquote{border-left:2px solid #a5bad5;margin:12px 0;padding-left:12px;color:#596d89;font-size:13px;line-height:1.9}.evidence-meta{font-size:11px;color:#647287;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}.evidence-meta a{color:#647287}.evidence-meta a:hover{text-decoration:underline}.query-conditions{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.query-conditions span{font-size:11px;padding:4px 8px;background:#f1f5fb;color:#647287;border-radius:4px}.pending-index{border:1px dashed #cbd8e9;border-radius:10px;padding:20px;margin-top:18px;color:#647287}.pending-index .icon{width:25px;height:25px;color:#647287}.pending-index strong{display:block;font-weight:500;font-size:13px;margin-top:8px}.pending-index p{font-size:11px;margin-bottom:0}.research-actions{display:flex;align-items:flex-start;flex-wrap:wrap;gap:14px;margin-top:24px;border-top:1px solid var(--line);padding-top:18px}.research-actions>.secondary{font-size:11px;padding:7px 11px;min-height:35px}.research-actions>.text-button{font-size:11px;align-self:center}.contribution-steps{list-style:none;padding:0;margin:22px 0}.contribution-steps li{display:flex;gap:16px;padding:16px 0}.contribution-steps li>span{font-size:12px;color:#647287;background:#eef3fa;border-radius:8px;width:32px;height:32px;display:flex;align-items:center;justify-content:center;flex:0 0 auto}.contribution-steps h3{font-size:14px;font-weight:500;margin:0 0 4px}.contribution-steps p{font-size:12px;color:#647287;margin:0}.help-content h3{font-size:14px;font-weight:500;margin-top:23px}.help-content p{font-size:12px;color:#647287;line-height:1.9}.reference-links{display:flex;gap:16px;flex-wrap:wrap;font-size:12px;color:#647287;margin-top:23px}.kb-intro{font-size:13px;color:#647287;white-space:pre-wrap;overflow-wrap:anywhere}.kb-status{font-size:11px;background:#edf3fa;color:#647287;display:inline-block;padding:3px 9px;border-radius:5px;margin:15px 0}.kb-documents{list-style:none;padding:0;margin:15px 0}.kb-documents li{display:flex;align-items:center;gap:10px;padding:10px 0;font-size:12px;color:#647287;border-bottom:1px solid #edf1f6;overflow-wrap:anywhere}.kb-question{margin-top:22px;border-top:1px solid var(--line);padding-top:18px}.kb-question label{display:block;font-size:12px;color:#647287;margin-bottom:8px}.kb-question input{width:100%;padding:11px;border:1px solid #dce4ef;border-radius:8px;font-size:13px}.kb-question button{font-size:12px;margin-top:12px}.kb-answer{font-size:12px;color:#647287;margin-top:12px;background:#f2f6fb;padding:12px;border-radius:8px}.toast{position:fixed;bottom:30px;left:calc(50% + 116px);transform:translateX(-50%);background:#2f4768;color:#fff;padding:12px 20px;border-radius:9px;box-shadow:0 7px 30px #223b6426;z-index:100;font-size:12px;max-width:calc(100% - 40px);text-align:center;animation:toast-in .15s ease-out}@keyframes toast-in{from{opacity:0;translate:0 5px}to{opacity:1;translate:0 0}}.mobile-shade{position:fixed;inset:0;background:#21324b66;z-index:14}

.dialog .validation{padding:0}.dialog{font-family:var(--font)}.dialog h2{color:var(--ink)}.dialog-kicker{display:none}.dialog input,.dialog textarea{font-family:var(--font)}.research-actions .text-button{align-self:center}.directory-item .icon{margin-left:auto}.scope-options{max-height:55dvh;overflow-y:auto;padding:2px}.scope-options .scope-option{margin:0 2px}.workspace-dialog .my-library-grid{margin-top:12px}
@media(max-width:700px){.dialog{padding:22px 19px;border-radius:14px;max-height:calc(100dvh - 30px);width:calc(100% - 24px)}.dialog h2{font-size:21px}.dialog-intro{font-size:12px}.scope-option{gap:8px;padding:12px}.scope-option small{font-size:10px}.scope-option .scope-status{display:none}.dialog-actions{gap:12px;align-items:flex-start;flex-wrap:wrap}.dialog-actions>.primary{margin-left:auto;font-size:11px}.dialog-actions .small-note{font-size:10px}.research-dialog{padding:0}.research-top{padding:20px}.research-layout{grid-template-columns:1fr}.source-panel{padding:15px 20px;border-right:0;border-bottom:1px solid var(--line);border-radius:0}.source-heading{margin-bottom:10px;font-size:11px}.source-item{display:inline-block;margin:0 6px 5px 0;padding:7px 10px}.source-item strong{font-size:11px}.source-item small{display:none}.source-note{margin-top:7px;font-size:10px}.answer-panel{padding:20px}.question-bubble{font-size:13px}.research-actions{gap:12px}.evidence{padding:13px}.evidence-meta{font-size:10px}.library-facts{font-size:12px;grid-template-columns:70px 1fr;gap:10px}.detail-note{font-size:11px}.visibility label{min-height:55px}.file-area input{font-size:11px}.contribution-steps p{font-size:11px}.scope-options{max-height:51dvh}.scope-separator{font-size:12px}.directory-item{font-size:12px}.directory-item small{font-size:11px}.dialog input[type=text],.dialog textarea{font-size:16px!important}}

.toast{left:50%}

/* Desktop: compact search, with space for the literature background. */
@media(min-width:1001px){.hero{min-height:530px}.hero-content{padding-top:34px;padding-bottom:32px}.hero-heading p{margin-bottom:22px}.ask-top{padding:12px 24px 0}#question{height:76px;min-height:76px;max-height:220px;padding:12px 24px;font-size:18px;line-height:1.8}.range-row{min-height:39px;padding:0 24px 10px}.ask-footer{padding:10px 24px}.search-submit{min-height:40px;padding:9px 18px}}

/* Desktop homepage: a literary statement and three clear destinations. */
@media(min-width:1001px){
  .home-page .hero-heading h1{font-size:32px;line-height:1.6;letter-spacing:.6px;margin:0 0 26px;white-space:nowrap}
  .home-page .systems{padding-top:12px;padding-bottom:36px}
  .home-page .systems-grid{padding:0;border:0;background:#284e68;gap:0}
  .home-page .system-entry{display:flex;align-items:center;justify-content:space-between;gap:16px;min-width:0;min-height:152px;padding:34px 32px;border:0;border-radius:0;background:transparent;color:#faf9f6;text-align:left;text-decoration:none;cursor:pointer;transition:background-color .18s ease}
  .home-page .system-entry+.system-entry{border-left:1px solid #ffffff40}
  .home-page .system-entry-title{font-family:var(--font-reading,"Songti SC",serif);font-size:28px;font-weight:600;line-height:1.5;letter-spacing:.5px;white-space:nowrap}
  .home-page .system-entry>.icon{flex:0 0 24px;width:24px;height:24px}
  .home-page .system-entry:hover{background:#173e57}
  .home-page .system-entry:focus-visible{outline:2px solid #faf9f6;outline-offset:-6px}
}

/* Desktop hero: retain the original image beneath a soft, warm paper wash. */
@media(min-width:1001px){
  body.home-page{background:#fbf4ea}
  .home-page .site-header{background:#fbf4ea;position:relative}
  .home-page .site-header:after{content:"";position:absolute;bottom:0;left:44px;right:44px;height:1px;background:#725f4629}
  .home-page .hero{min-height:570px;background:#fbf4ea}
  .home-page .hero-art{inset:-12px;opacity:.4;filter:saturate(.6) sepia(.2) blur(2px);background-position:center 48%;mask-image:linear-gradient(180deg,transparent 0%,#000 15%,#000 70%,transparent 100%)}
  .home-page .hero:after{background:linear-gradient(90deg,#fbf4ea66, #fbf4ea26 32%,#fbf4ea26 68%,#fbf4ea66),linear-gradient(180deg,#fbf4ea55 0%,transparent 35%,#fbf4ea22 65%,#fbf4ea 100%)}
  .home-page .hero-content{padding-top:50px;padding-bottom:40px}
  .home-page .hero .hero-heading h1{font-size:52px;font-weight:500;line-height:1.5;letter-spacing:6px;color:#443129;margin:0 0 30px}
  .home-page .ask-box{background:#fffdf9f7;border-radius:12px;box-shadow:0 12px 36px #68513712}
  .home-page .ask-box:focus-within{box-shadow:0 12px 36px #68513724}
  .home-page .ask-footer{background:#fffdf9}
  .home-page .suggestions button{background:#fffdf9d9;border-color:#b8a48a45}
  .home-page .suggestions button:hover{background:#fffdf9;border-color:#816f5666}
}

/* Desktop components: quiet surfaces, consistent controls, one primary action. */
@media(min-width:1001px){
  .home-page{--home-control-radius:24px;--home-surface:#fffdf9;--home-control:#f1eee7;--home-action:#284e68}
  .home-page .account-nav{gap:20px}
  .home-page .account-divider{display:none}
  .home-page .account-nav .my-space{display:flex;align-items:center;gap:8px;min-height:40px;padding:8px 16px;border-radius:var(--home-control-radius);background:#725f460a}
  .home-page .register-button{min-height:40px;padding:8px 22px;border-radius:var(--home-control-radius)}
  .home-page .ask-box{border-radius:16px;background:var(--home-surface);box-shadow:0 16px 48px #59412a14}
  .home-page .ask-top{padding:18px 24px 0;min-height:56px}
  .home-page .ask-title{font-size:14px;font-weight:500;letter-spacing:.2px;color:#465b67}
  .home-page .ask-top .selected-scope{max-width:65%;min-height:36px;gap:8px;border:0;border-radius:var(--home-control-radius);padding:7px 12px 7px 16px;background:var(--home-control);color:#3c5261}
  .home-page .ask-top #scope-label{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
  .home-page .ask-top #scope-count{font-size:12px;line-height:1.6;background:transparent;padding:0;min-width:0;color:inherit;font-variant-numeric:tabular-nums}
  .home-page .ask-top .selected-scope>.icon{flex:0 0 14px}
  .home-page #question{height:78px;min-height:78px;padding:16px 26px 10px;line-height:1.6;resize:vertical}
  .home-page .ask-footer{padding:10px 22px 18px;border:0;background:var(--home-surface)}
  .home-page .attach-button{min-height:42px;padding:8px 14px;border-radius:var(--home-control-radius);background:var(--home-control);gap:8px}
  .home-page .attach-button:hover,.home-page .ask-top .selected-scope:hover{background:#e8e3d9}
  .home-page .ask-footer .search-submit{min-height:46px;min-width:164px;padding:11px 22px;border-radius:var(--home-control-radius);font-size:15px;font-weight:500;gap:20px}
  .home-page .suggestions{gap:10px;margin-top:20px}
  .home-page .suggestions button{min-height:36px;padding:7px 16px;border-radius:var(--home-control-radius);border:0;background:#fffdf9bd;font-weight:400}
  .home-page .suggestions>span{margin-right:6px}
  .home-page .systems-grid{gap:20px;background:transparent}
  .home-page .system-entry{min-height:126px;padding:28px 30px;background:#fffdf9;border-radius:16px;color:#284e68}
  .home-page .system-entry+.system-entry{border-left:0}
  .home-page .system-entry-title{font-size:28px;font-weight:500;letter-spacing:.3px}
  .home-page .system-entry>.icon{width:40px;height:40px;flex-basis:40px;padding:11px;border-radius:50%;background:#edf1f1}
  .home-page .system-entry:hover{background:#f1eee7}
  .home-page .system-entry:focus-visible{outline:2px solid #284e68;outline-offset:4px}
  .home-page .dialog{border-radius:16px}
  .home-page .dialog .primary,.home-page .dialog .secondary{border-radius:var(--home-control-radius)}
  .home-page .directory-item{min-height:64px;padding:14px 16px;border-radius:12px}
  .home-page button:focus-visible,.home-page a:focus-visible{outline:2px solid #284e68;outline-offset:4px}
}