:root{--ink:#203d35;--green:#226b52;--muted:#64786f;--line:#dbe7e0;--paper:#fff;--bg:#f2f6f3;--red:#92242a}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:80px}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}a{color:var(--green);text-underline-offset:4px}a:hover{color:var(--red)}button,input,select,textarea{font:inherit}button{border:0;border-radius:10px;padding:11px 23px;background:var(--green);color:white;cursor:pointer;font-weight:600}button:disabled{opacity:.45;cursor:not-allowed}button:hover:not(:disabled){background:#19533e}input,select,textarea{width:100%;max-width:100%;padding:11px 12px;border:1px solid #b8ccc0;background:#fff;border-radius:9px;color:var(--ink)}input:focus,select:focus,textarea:focus{outline:3px solid #bce1ce;outline-offset:1px}textarea{resize:vertical}label{display:block;font-weight:600;margin:14px 0}label input,label select,label textarea{display:block;margin-top:7px;font-weight:400}input[type=hidden]{display:none}input[type=checkbox]{display:inline-block;width:auto}h1,h2,h3,p{overflow-wrap:anywhere}h1{font-size:32px;line-height:1.3;margin:12px 0}h2{font-size:23px;margin:0 0 18px}h3{font-size:17px;margin:16px 0 5px}p{margin:12px 0}.brand{background:#203d35;color:#fff;border-bottom:4px solid #a72b30}.brand-inner{max-width:1120px;margin:auto;padding:22px 30px;display:flex;align-items:center;gap:22px;text-decoration:none;color:white}.brand-inner:hover{color:white}.brand img{width:68px;height:85px;object-fit:contain;background:white;padding:5px;border-radius:6px;flex-shrink:0}.brand strong{display:block;font-size:23px;letter-spacing:.04em}.brand-sub{display:block;font-size:17px;margin-top:2px;color:#dceae1;letter-spacing:.12em}.simple-main{max-width:1120px;margin:0 auto;padding:18px 30px 60px}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;color:var(--muted);font-size:14px;margin-bottom:24px}.toolbar-actions{display:flex;align-items:center;gap:20px}.toolbar-actions>form{margin:0}.text-button{padding:0;background:none;color:var(--green);font-weight:400}.text-button:hover{background:none!important;text-decoration:underline}.account-menu{position:relative}.account-menu>div{position:absolute;right:0;top:30px;width:180px;padding:15px 20px;background:white;border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px #203d3520;z-index:10}.account-menu a{display:block;margin:7px 0}.account-menu form{margin:7px 0}.page-title{margin:30px 0 24px}.eyebrow{font-size:11px;letter-spacing:.2em;font-weight:700;color:var(--green)}.muted,.record-meta,.file-hint{color:var(--muted);font-size:14px}.workbench-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;align-items:start}.card{border:1px solid var(--line);border-radius:17px;background:white;padding:28px;margin-bottom:22px;box-shadow:0 5px 20px #203d3504;min-width:0}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.form-grid label{margin-top:0}.tag{display:inline-block;padding:4px 13px;border-radius:30px;background:#e7f3ec;color:var(--green);font-size:14px;font-weight:600}.student-heading{display:flex;align-items:center;justify-content:space-between;gap:24px}.student-heading h1{margin-bottom:0}.student-actions{max-width:390px}.student-actions details{margin-top:10px}.archive-nav{display:grid;grid-template-columns:repeat(5,1fr);position:sticky;top:0;z-index:5;padding:15px 0;border:1px solid var(--line);border-radius:12px;background:#ffffffef;backdrop-filter:blur(8px);margin:0 0 22px;text-align:center;box-shadow:0 8px 20px #203d3508}.archive-nav a{font-size:18px;font-weight:700;text-decoration:none}.section-title{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:16px}.section-title h2{margin-bottom:0}.section-title a{font-size:14px}.entry-form{background:#f5f9f6;border:1px solid var(--line);padding:16px 18px;border-radius:12px;margin-bottom:24px}summary{cursor:pointer;font-weight:600}details[open]>summary{margin-bottom:15px}.dropzone{padding:28px 16px;text-align:center;border:2px dashed #a5c5b1;border-radius:11px;background:#fff;color:var(--green)}.dropzone input{margin-top:12px;border:0;padding:6px;font-size:14px}.dropzone.dragging{background:#e4f3e9;border-color:var(--green)}.record{padding:22px 0;border-top:1px solid var(--line)}.record:last-child{padding-bottom:0}.record details{margin:12px 0}.prewrap{white-space:pre-wrap}.empty{color:#74877d;padding:20px 0}.archive-image{max-width:100%;height:auto;display:block;border-radius:9px}.image-preview{display:block;max-width:100%;padding:0;background:none!important;color:var(--muted);text-align:left}.image-preview img{max-height:520px;object-fit:contain;object-position:left}.image-preview span{display:block;padding:7px 0;font-size:12px}.danger-link{font-size:12px;color:#9c4444;display:inline-block;margin-top:8px}.attendance-table-wrap{overflow-x:auto}.attendance-table{width:100%;border-collapse:collapse;min-width:300px}.attendance-table td,.attendance-table th{text-align:left;vertical-align:top;border-bottom:1px solid var(--line);padding:11px 8px;font-size:14px}.attendance-count{display:inline-block;padding:4px 10px;background:#edf5ef;border-radius:8px;margin:4px}.attendance-month{padding:12px 0;border-top:1px solid var(--line)}.attendance-note summary,.attendance-edit summary{font-size:12px}.attendance-note p{font-size:12px}.preview-label{background:#e8f2eb;padding:5px 10px;border-radius:7px}.legacy-records{margin-top:18px}dialog{border:1px solid var(--line);border-radius:12px;max-width:95vw;width:1000px;max-height:94vh;padding:15px}dialog::backdrop{background:#10281fba}.viewer-tools{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:12px}.viewer-scroll{overflow:auto;max-height:78vh}.viewer-scroll img{max-width:100%;height:auto}.feedback-record h3{color:var(--green)}@media(min-width:950px){.simple-main>section.card{padding:30px 40px}.workbench-grid .card{min-height:410px}}@media(max-width:640px){.brand-inner{padding:16px;gap:13px}.brand img{width:48px;height:61px;padding:4px}.brand strong{font-size:17px;letter-spacing:0}.brand-sub{font-size:13px;letter-spacing:.02em}.simple-main{padding:15px 14px 40px}.toolbar{align-items:flex-start;font-size:12px;gap:8px}.toolbar-actions{gap:14px}.workbench-grid{grid-template-columns:1fr;gap:0}.card{padding:21px 19px;border-radius:13px;margin-bottom:16px}.form-grid{grid-template-columns:1fr;gap:0}.student-heading{display:block}.student-actions{margin-top:16px}.archive-nav{padding:12px 0;margin-bottom:16px}.archive-nav a{font-size:16px}.section-title a{font-size:13px}.page-title{margin-top:23px}h1{font-size:28px}h2{font-size:21px}.record-meta{font-size:12px}.viewer-tools span{font-size:13px}.viewer-scroll img{max-width:none;width:auto;min-width:100%}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.paste-area{display:block;border:2px dashed #a5c5b1;border-radius:11px;padding:25px 15px;background:white;color:var(--green);text-align:center;outline-offset:3px}.homework-subject{padding:15px 0;border-top:1px solid var(--line)}.homework-subject summary{display:flex;justify-content:space-between;align-items:center;gap:10px}.homework-subject summary span{font-size:12px;color:var(--muted);font-weight:400}.selected-images{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}.selected-images img{width:90px;height:70px;object-fit:cover;border:1px solid var(--line);border-radius:5px}

.homework-subject>summary span::after{content:" · 展开"}.homework-subject[open]>summary span::after{content:" · 收起"}

.batch-actions{display:flex;gap:16px;align-items:center;flex-wrap:wrap}.secondary-button{background:#edf5ef;color:var(--green);padding:8px 13px}.batch-students{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;max-height:360px;overflow-y:auto;padding:4px}.batch-student{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:9px;margin:0;padding:11px;cursor:pointer}.batch-student[hidden]{display:none}.batch-student input{margin:0;flex-shrink:0;width:18px;height:18px}.batch-student span{min-width:0;overflow-wrap:anywhere}.batch-student small{display:block;color:var(--muted);font-weight:400;font-size:12px}.batch-student:has(input:checked){background:#edf6f0;border-color:var(--green)}.batch-review{background:#f5f9f6;border-radius:10px;padding:14px;margin-top:18px}.batch-review p{margin-bottom:0}.publish-result{background:#e4f3e9;border:1px solid #9bc8ac;padding:15px;border-radius:10px}.paste-area.dragging{background:#e4f3e9}.batch-homework .file-hint{margin-bottom:8px}@media(max-width:640px){.batch-students{grid-template-columns:repeat(2,minmax(0,1fr))}.batch-student{padding:9px;gap:8px}.batch-actions{gap:13px;font-size:13px}}