:root{--bg:#f6f7f4;--paper:#fff;--ink:#202b29;--muted:#72807a;--line:#dfe5de;--green:#27634e;--soft:#edf3ed;--orange:#a96330}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.65 system-ui,-apple-system,"Noto Sans CJK SC","Microsoft Yahei",sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}a:focus-visible,button:focus-visible{outline:3px solid #94b5a2;outline-offset:4px}
.top{height:82px;padding:0 max(24px,calc((100vw - 1120px)/2));display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:#fff9}.brand{font-weight:750;font-size:19px;display:flex;gap:12px;align-items:center;white-space:nowrap}.brand-icon{font:30px Georgia;background:var(--green);color:white;border-radius:11px;width:40px;height:40px;display:grid;place-items:center}.course{font-size:12px;font-weight:500;color:var(--green);padding:3px 10px;border:1px solid #cbdccf;border-radius:20px;margin-left:8px}.top nav{display:flex;gap:24px;align-items:center;font-size:13px}.top form{margin:0}.text-button{border:0;background:none;color:var(--muted);padding:0}main{max-width:1120px;margin:auto;padding:44px 24px 80px;min-height:calc(100vh - 165px)}h1,h2,h3,p{margin-top:0}h1{font-weight:650;font-size:40px;letter-spacing:-1.5px;line-height:1.3}h2{font-size:19px;font-weight:650;letter-spacing:-.3px}small{font-size:12px;color:var(--muted)}.muted{color:var(--muted)}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:700;color:var(--green)}.hero{display:grid;grid-template-columns:1fr .85fr;gap:60px;align-items:center;padding:20px 0 38px}.hero h1{font-size:47px;margin:16px 0 20px;line-height:1.35}.hero em{font-style:normal;color:var(--green)}.hero p{color:var(--muted);font-size:16px}.math-art{border:1px solid #d9e1d6;background:linear-gradient(125deg,#e8eee3,#f2f5ed);border-radius:20px;padding:32px 35px;min-height:235px;position:relative;box-shadow:0 13px 35px #314d2a06}.math-art:before{content:"";position:absolute;inset:0;border-radius:20px;background-image:linear-gradient(#50704a08 1px,transparent 1px),linear-gradient(90deg,#50704a08 1px,transparent 1px);background-size:24px 24px}.art-label{font-size:9px;letter-spacing:2px;color:#76856c;position:relative}.math-art div{font:36px/1.4 Georgia,serif;color:#3a5944;margin:18px 0 0;position:relative}.math-art .art-second{font-size:30px;margin-top:4px}.math-art small{display:block;text-align:right;margin-top:15px}.panel{border:1px solid var(--line);border-radius:17px;padding:28px;background:var(--paper)}.upload-panel{display:grid;grid-template-columns:.6fr 1.4fr;gap:35px}.step{font:11px ui-monospace,monospace;color:var(--green);letter-spacing:2px;display:block;margin-bottom:15px}.drop{border:1px dashed #b9cbbb;border-radius:12px;background:#f8faf7;display:flex;flex-direction:column;align-items:center;padding:24px;cursor:pointer;gap:7px;text-align:center;position:relative}.drop:hover{background:var(--soft)}.drop input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}.upload-icon{font-size:27px;color:var(--green);line-height:1.2}.drop strong{font-size:15px;font-weight:600}.drop span:last-of-type{font-size:12px;color:var(--muted)}.upload-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:18px}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;gap:18px;border:1px solid var(--green);border-radius:8px;padding:10px 18px;font-size:13px;font-weight:600;white-space:nowrap}.primary{background:var(--green);color:#fff}.primary:hover{background:#1c4d3b}.secondary{background:#fff;color:var(--green);border-color:#cbd8cc}.full{width:100%;margin:8px 0}.section-title{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:0 0 20px}.section-title h2{margin:0}.history{margin-top:40px}.count{font-size:12px;color:var(--muted);margin-left:8px}.task-row{display:flex;align-items:center;gap:18px;padding:20px 8px;border-top:1px solid var(--line)}.task-row:hover{background:#ecf1e9}.task-row>div{flex:1}.task-row p{margin:4px 0 0;font-size:12px;color:var(--muted)}.file-icon{font:10px ui-monospace;background:white;border:1px solid var(--line);border-radius:8px;padding:16px 9px;color:var(--green)}.status{font-size:12px;color:#64756b;background:#e9eee7;padding:5px 12px;border-radius:20px;white-space:nowrap}.status.completed{background:#e0efdf;color:#326b37}.status.running,.status.preparing{background:#e5eff4;color:#35637c}.status.failed,.status.attention,.status.interrupted{background:#faeddd;color:var(--orange)}.arrow{font-size:20px;color:var(--muted)}.empty{text-align:center;border:1px dashed var(--line);border-radius:12px;padding:30px;color:var(--muted)}.empty>span{font:32px Georgia;color:#a5b39e}.empty h3{font-size:15px;margin:10px 0 4px;color:#687663}.empty p{font-size:13px;margin:0}.back{font-size:13px;color:var(--muted);display:inline-block;margin-bottom:25px}.task-header{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:30px}.task-header h1{font-size:30px;margin:12px 0;word-break:break-all}.task-layout{display:grid;grid-template-columns:1fr 300px;gap:25px}.stages{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:12px;margin:25px 0 18px}progress{width:100%;height:8px;border:0;border-radius:6px;background:var(--soft);accent-color:var(--green)}progress::-webkit-progress-bar{background:var(--soft);border-radius:6px}progress::-webkit-progress-value{background:var(--green);border-radius:6px}.metrics{display:flex;justify-content:space-between;align-items:center;margin:18px 0}.metrics strong{font-size:30px;font-weight:600;margin-right:10px}.metrics p{margin:0;font-size:13px;color:var(--muted)}.notice{border-radius:8px;padding:12px 15px;background:#f5f4eb;color:#706c49;font-size:13px;overflow-wrap:anywhere}.live-dot{width:7px;height:7px;border-radius:50%;background:#78a186}.start-form{margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}label{display:block;font-size:13px;color:#5e7065;margin-bottom:8px}input:not([type=file]):not([type=hidden]),select,textarea{width:100%;padding:11px 12px;border:1px solid #d5dfd4;border-radius:7px;background:#fbfcfa;color:var(--ink)}input:focus,textarea:focus{outline:2px solid #96b99f}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.start-form button{margin:20px 0 10px}.start-form>small{display:block}.result-panel p{color:var(--muted);line-height:2;font-size:13px}.subtle-link{display:block;font-size:13px;color:var(--green);margin:12px 0}.waiting{font-size:12px;border:1px dashed var(--line);border-radius:8px;padding:20px 15px;color:var(--muted)}hr{border:0;border-top:1px solid var(--line);margin:25px 0}.previews{margin-top:35px}.thumbnail-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.thumbnail-grid a{background:#fff;border:1px solid var(--line);border-radius:9px;padding:7px}.thumbnail-grid img{width:100%;aspect-ratio:1.75;object-fit:contain}.thumbnail-grid small{display:block;padding:5px}.layout-form{display:flex;align-items:center;gap:15px;margin:20px 0}.layout-form label{margin:0;flex:1}.layout-form select{width:180px}.login{max-width:490px;margin:40px auto;padding:38px}.login h1{margin:20px 0;font-size:36px}.login form{margin-top:30px}.login small{display:block;margin-top:20px}.login .primary{margin-top:20px}.reader-actions{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px}.reader-actions .back{margin:0}.reader-layout{display:grid;grid-template-columns:200px 1fr;gap:40px}.toc{position:sticky;top:25px;align-self:start;font-size:12px;max-height:85vh;overflow:auto}.toc a{display:block;padding:7px 0;color:var(--muted);border-bottom:1px solid var(--line)}.prose{background:white;border:1px solid var(--line);border-radius:14px;padding:35px 45px;min-width:0;font-size:17px;line-height:1.95}.prose h1{font-size:30px}.prose h2{font-size:23px;border-bottom:1px solid var(--line);padding-bottom:10px;margin-top:38px}.prose h3{font-size:19px;margin-top:30px}.prose table{font-size:14px;width:100%;border-collapse:collapse}.prose th,.prose td{padding:9px;border-bottom:1px solid var(--line);text-align:left}.prose blockquote{background:var(--soft);border-left:3px solid #9bb495;margin:20px 0;padding:10px 20px;font-size:15px}.prose pre{overflow:auto}.prose .math.block,.prose mjx-container[display=true]{overflow-x:auto;overflow-y:hidden;max-width:100%}.review-card{background:white;padding:20px;border:1px solid var(--line);border-radius:10px;margin:15px 0}.review-card summary{cursor:pointer}.review-card img{display:block;max-width:100%;max-height:500px;margin:20px auto}.review-card button{margin-top:12px}footer{border-top:1px solid var(--line);max-width:1072px;margin:auto;padding:24px 0;display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}
@media(max-width:760px){.top{height:68px;padding:0 20px}.brand{font-size:16px;gap:8px}.brand-icon{width:32px;height:32px}.top nav{gap:12px;font-size:12px}.course{margin:0;padding:2px 7px}.hero{grid-template-columns:1fr;gap:15px}.hero h1{font-size:37px}.math-art{display:none}main{padding:28px 18px 50px}.panel{padding:22px}.upload-panel{grid-template-columns:1fr;gap:10px}.upload-bottom{align-items:flex-end}.upload-bottom small{font-size:11px}.task-layout{grid-template-columns:1fr}.thumbnail-grid{grid-template-columns:repeat(2,1fr)}.section-title>small{display:none}.layout-form{flex-wrap:wrap}.layout-form label{flex-basis:100%}.reader-layout{grid-template-columns:1fr;gap:15px}.toc{position:static;max-height:150px}.prose{padding:25px 20px;font-size:16px}.reader-actions .back{max-width:50%;overflow-wrap:anywhere}.task-row{gap:10px}.task-row strong{font-size:13px;word-break:break-all}.task-row .status{font-size:10px;padding:4px 8px}footer{padding:20px;display:block}footer span{display:block;margin-top:5px}.login{padding:25px;margin:20px auto}.form-grid{grid-template-columns:1fr}.stages{font-size:11px;gap:5px}}
.portal-hero{padding:25px 0 45px}.portal-hero h1{font-size:44px;margin:18px 0 22px;line-height:1.4}.portal-hero em{font-style:normal;color:var(--green)}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.course-card{transition:transform .15s,border-color .15s}.course-card:hover{transform:translateY(-3px);border-color:#9ab6a2}.course-card h2{font-size:25px;margin-bottom:0}.course-card p{color:var(--muted);font-size:14px;margin:22px 0 30px}.course-symbol{font:30px Georgia;color:var(--green);background:var(--soft);border-radius:11px;width:50px;height:50px;display:grid;place-items:center}.course-card-bottom{border-top:1px solid var(--line);padding-top:18px;display:flex;justify-content:space-between;gap:15px;font-size:12px}.course-card-bottom span{color:var(--muted)}.course-card-bottom strong{color:var(--green);font-weight:600}.workflow-label{display:flex;gap:14px;align-items:center}.workflow-label .course{margin:0}@media(max-width:900px){.course-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.course-grid{grid-template-columns:1fr}.portal-hero h1{font-size:34px}.workflow-label{flex-wrap:wrap}}