:root{--ink:#252638;--muted:#818394;--paper:#f6f7fb;--surface:#fff;--line:#e9eaf1;--teal:#5b5ce2;--teal-dark:#494ac9;--mint:#efefff;--coral:#df5555;--sand:#dfe0ff;--success:#1d9b6c;--danger:#df5555;--shadow:0 18px 48px rgba(35,36,70,.08)}
*{box-sizing:border-box}html{font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--paper)}body{margin:0;min-height:100vh}button,input,select,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}
.eyebrow{margin:0 0 7px;color:var(--teal);font-size:11px;font-weight:800;letter-spacing:.18em}.muted{color:var(--muted)}
.brand-mark{width:68px;height:68px;display:grid;place-items:center;border-radius:20px 20px 20px 5px;color:#fff;background:var(--coral);font:800 32px/1 Georgia,serif;box-shadow:0 10px 35px rgba(231,111,81,.28)}.brand-mark.small{width:40px;height:40px;border-radius:12px 12px 12px 3px;font-size:20px}
.login-page{display:grid;place-items:center;padding:40px;overflow:hidden;background:#e9eee8}.login-shell{width:min(1080px,100%);min-height:650px;display:grid;grid-template-columns:1.15fr .85fr;background:var(--surface);border-radius:30px;overflow:hidden;box-shadow:var(--shadow)}.login-brand{position:relative;padding:74px;color:#fff;background:var(--teal-dark);overflow:hidden}.login-brand .eyebrow{margin-top:52px;color:#91cfc2}.login-brand h1{position:relative;z-index:2;max-width:520px;margin:0 0 28px;font:600 clamp(42px,5vw,68px)/1.12 Georgia,"Noto Serif SC",serif;letter-spacing:-.04em}.login-brand>p:last-of-type{position:relative;z-index:2;max-width:430px;color:#bbd1cc;line-height:1.8}.login-orbit{position:absolute;border:1px solid rgba(255,255,255,.15);border-radius:50%}.orbit-one{width:420px;height:420px;right:-190px;bottom:-100px;box-shadow:0 0 0 50px rgba(255,255,255,.025),0 0 0 105px rgba(255,255,255,.02)}.orbit-two{width:34px;height:34px;right:93px;bottom:114px;border:10px solid var(--coral)}
.login-card{display:flex;flex-direction:column;justify-content:center;padding:70px}.login-card h2{margin:0;font:600 34px/1.2 Georgia,"Noto Serif SC",serif}.login-card form{display:grid;gap:22px;margin-top:42px}label{display:grid;gap:8px;color:#4b5653;font-size:13px;font-weight:700}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:11px;padding:12px 14px;color:var(--ink);background:#fff;outline:none;transition:.2s}input:focus,select:focus,textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(20,107,97,.1)}textarea{min-height:110px;resize:vertical}.form-error{min-height:20px;margin:-6px 0;color:#bd3d31;font-size:13px}.login-foot{margin-top:auto;color:#96a09d;font-size:12px}
.button{min-height:42px;display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:10px;padding:0 18px;font-weight:750;cursor:pointer;transition:transform .15s,opacity .15s}.button:hover{transform:translateY(-1px)}.button:disabled{cursor:wait;opacity:.6}.button.primary{color:#fff;background:var(--teal);box-shadow:0 8px 22px rgba(20,107,97,.18)}.button.ghost{color:var(--ink);background:#ebeae4}.button.danger{color:#a84035;background:#f8ded7}.button.small{min-height:32px;padding:0 11px;font-size:12px}.button.wide{width:100%;min-height:48px}
.admin-page{display:grid;grid-template-columns:248px 1fr;min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;z-index:20;width:248px;display:flex;flex-direction:column;padding:28px 18px;color:#dae7e4;background:var(--teal-dark)}.brand{display:flex;align-items:center;gap:12px;padding:0 8px 28px}.brand strong,.brand small{display:block}.brand strong{color:#fff;font:600 20px/1.25 Georgia,"Noto Serif SC",serif}.brand small{margin-top:4px;color:#85a8a1;font-size:10px;letter-spacing:.12em}.side-nav{display:grid;gap:5px}.side-nav a{display:flex;align-items:center;gap:12px;min-height:46px;padding:0 13px;border-radius:11px;color:#9fb7b2;font-size:14px;font-weight:650}.side-nav a span{width:26px;height:26px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.12);border-radius:8px;font:700 12px Georgia,serif}.side-nav a:hover,.side-nav a.active{color:#fff;background:rgba(255,255,255,.09)}.side-nav a.active span{color:#26352f;border-color:var(--sand);background:var(--sand)}.sidebar-foot{margin-top:auto;padding:15px 12px 0;border-top:1px solid rgba(255,255,255,.1);color:#7fa39b;font-size:11px}.status-dot{width:7px;height:7px;display:inline-block;margin-right:8px;border-radius:50%;background:#70cf9c;box-shadow:0 0 0 4px rgba(112,207,156,.1)}
.workspace{grid-column:2;min-width:0}.topbar{height:104px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 38px;border-bottom:1px solid var(--line);background:rgba(245,243,237,.9);backdrop-filter:blur(12px)}.topbar h1{margin:0;font:600 27px/1.1 Georgia,"Noto Serif SC",serif}.account{display:flex;align-items:center;gap:11px}.account strong,.account small{display:block}.account small{margin-top:3px;color:var(--muted);font-size:11px}.avatar{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;color:#fff;background:var(--teal);font-weight:800}.text-button,.icon-button,.menu-button{border:0;cursor:pointer;background:transparent}.text-button{margin-left:8px;color:var(--muted);font-size:12px}.menu-button{display:none;font-size:22px}.content{padding:32px 38px 60px}.loading-card,.empty{padding:70px 20px;border:1px dashed #c8cac2;border-radius:18px;color:var(--muted);text-align:center;background:rgba(255,255,255,.45)}
.stat-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.stat-card{position:relative;min-height:150px;padding:23px;border:1px solid var(--line);border-radius:17px;background:var(--surface);overflow:hidden}.stat-card:after{content:"";position:absolute;width:70px;height:70px;right:-24px;top:-24px;border:14px solid var(--mint);border-radius:50%}.stat-card.coral:after{border-color:#f6d7ce}.stat-card.sand:after{border-color:#f3ead7}.stat-card p{margin:0;color:var(--muted);font-size:13px}.stat-card strong{display:block;margin:24px 0 8px;font:650 34px/1 Georgia,serif}.stat-card small{color:#84908d}
.panel{margin-top:20px;border:1px solid var(--line);border-radius:17px;background:var(--surface);box-shadow:0 6px 22px rgba(30,50,46,.035);overflow:hidden}.panel-header,.section-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 22px}.section-head{padding:0 0 20px}.panel-header{border-bottom:1px solid #ebeae4}.panel-header h2,.section-head h2{margin:0;font:600 20px/1.2 Georgia,"Noto Serif SC",serif}.toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.toolbar input,.toolbar select{width:auto;min-width:150px;padding:9px 11px;background:var(--surface)}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:13px}th,td{padding:14px 18px;border-bottom:1px solid #eeede8;text-align:left;vertical-align:middle}th{color:#7b8582;background:#faf9f5;font-size:11px;letter-spacing:.04em}tbody tr:hover{background:#fcfbf8}.cell-main{max-width:430px;font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.badge{display:inline-flex;align-items:center;min-height:24px;padding:0 9px;border-radius:999px;color:#3f5f58;background:var(--mint);font-size:11px;font-weight:750}.badge.gray{color:#6d7472;background:#e9e9e4}.badge.coral{color:#9b4538;background:#f8ded7}.actions{display:flex;gap:6px}.actions button{border:0;padding:5px 8px;border-radius:7px;color:var(--teal);cursor:pointer;background:#e8f2ee;font-size:11px}.actions button.danger{color:#a84035;background:#f8ded7}.split-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.mini-list{display:grid;gap:0}.mini-row{display:grid;grid-template-columns:1fr auto;gap:16px;padding:14px 22px;border-bottom:1px solid #eeede8}.mini-row:last-child{border-bottom:0}.mini-row small{color:var(--muted)}.pager{display:flex;justify-content:flex-end;gap:8px;padding:16px 20px}
.pager{align-items:center;gap:7px}.pager-summary{margin-right:auto;color:var(--muted);font-size:12px}.page-button{min-width:32px;height:32px;padding:0 10px;border:0;border-radius:8px;color:var(--ink);background:#ebeae4;cursor:pointer;font-size:12px;font-weight:700}.page-button:hover:not(:disabled),.page-button.active{color:#fff;background:var(--teal)}.page-button:disabled{cursor:not-allowed;opacity:.45}
.question-page-size{display:flex;align-items:center;gap:9px;white-space:nowrap;color:var(--muted);font-size:12px}.question-page-size select{width:auto;min-width:92px;padding:8px 10px;font-size:12px}
.bank-share-button{display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border:0;border-radius:8px;color:#5556cd;background:#eeeeff;cursor:pointer;font-size:12px;font-weight:750;white-space:nowrap}.bank-share-button span{font-size:17px;line-height:1}.bank-share-button:hover{color:#fff;background:#5b5ce2}.bank-share-button.unavailable{color:#a0a1ad;background:#f1f1f4;cursor:not-allowed}.bank-share-button.unavailable:hover{color:#a0a1ad;background:#f1f1f4}
.list-search{display:flex;align-items:center;gap:8px}.list-search input{width:min(390px,38vw);min-width:240px;padding:9px 12px}.list-search select{width:auto;min-width:110px;padding:9px 34px 9px 12px}.redeem-code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-weight:750;letter-spacing:.03em;white-space:nowrap}.active-filter{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 14px;padding:10px 14px;border:1px solid #d9e8e2;border-radius:12px;color:var(--teal);background:#f3faf7;font-size:13px;font-weight:700}.active-filter button{padding:0;border:0;color:var(--teal);background:transparent;cursor:pointer;font:inherit}.bank-id{color:var(--muted);font-weight:700;white-space:nowrap}.bank-list-name{display:flex;align-items:center;gap:12px;min-width:260px}.bank-list-name>span:last-child{display:grid;min-width:0}.bank-list-name small{display:block;max-width:340px;margin-top:4px;overflow:hidden;color:var(--muted);font-size:11px;white-space:nowrap;text-overflow:ellipsis}.bank-thumb{width:42px;height:52px;display:grid;flex:none;place-items:center;overflow:hidden;border-radius:10px 10px 10px 3px;color:var(--teal);background:#edf3ef;font-weight:800}.bank-thumb img{width:100%;height:100%;object-fit:cover}.bank-title-link{width:max-content;max-width:340px;overflow:hidden;padding:0;border:0;color:var(--ink);background:transparent;cursor:pointer;font-weight:750;text-align:left;text-overflow:ellipsis;white-space:nowrap}.bank-title-link:hover{color:var(--teal)}.question-count{font-size:16px}
.redeem-view-tabs{display:flex;width:max-content;margin:0 0 4px;padding:4px;border:1px solid var(--line);border-radius:12px;background:#ebeae4}.redeem-view-tab{min-width:128px;padding:10px 18px;border-radius:9px;color:var(--muted);font-size:13px;font-weight:750;text-align:center;transition:.2s}.redeem-view-tab:hover{color:var(--teal)}.redeem-view-tab.active{color:#fff;background:var(--teal);box-shadow:0 5px 14px rgba(20,107,97,.18)}
.chapter-name{display:grid;gap:3px;padding-left:calc(var(--chapter-level) * 22px);min-width:240px}.chapter-name span{font-weight:750}.chapter-name small{max-width:360px;overflow:hidden;color:var(--muted);font-size:11px;white-space:nowrap;text-overflow:ellipsis}.chapter-name[style*="--chapter-level:1"] span:before,.chapter-name[style*="--chapter-level:2"] span:before{content:"↳";margin-right:7px;color:#9ca6a3}
.bank-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.bank-card{border:1px solid var(--line);border-radius:18px;background:var(--surface);box-shadow:0 8px 30px rgba(30,50,46,.05);overflow:hidden;transition:transform .2s,box-shadow .2s}.bank-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.bank-open{width:100%;min-height:210px;padding:25px;border:0;text-align:left;color:var(--ink);background:linear-gradient(145deg,#fffefa 55%,#edf5f1);cursor:pointer}.bank-index{color:var(--teal);font-size:10px;font-weight:800;letter-spacing:.15em}.bank-card h3{margin:28px 0 10px;font:600 25px/1.2 Georgia,"Noto Serif SC",serif}.bank-card p{height:42px;margin:0 0 20px;color:var(--muted);font-size:12px;line-height:1.7;overflow:hidden}.bank-card strong{font:650 32px/1 Georgia,serif}.bank-card small{margin-left:6px;color:var(--muted)}.bank-card footer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 17px;border-top:1px solid #ebeae4}.back-link{display:block;margin:0 0 18px;padding:0;border:0;color:var(--teal);background:transparent;cursor:pointer;font-size:13px;font-weight:700}
.generated-codes{padding:20px 22px}.generated-codes textarea{min-height:220px;margin:12px 0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;line-height:1.7}
.feedback-images{display:flex;flex-wrap:wrap;gap:7px;min-width:52px}.feedback-images a{display:block;border-radius:9px;outline:none}.feedback-images a:focus-visible{box-shadow:0 0 0 3px rgba(20,107,97,.2)}.feedback-images img{display:block;width:52px;height:52px;border:1px solid var(--line);border-radius:9px;background:#f1f0eb;object-fit:cover}.feedback-images.large{gap:12px}.feedback-images.large img{width:128px;height:128px;border-radius:13px}.form-images{display:grid;gap:9px;color:#4b5653;font-size:13px;font-weight:700}
.content-operation-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.content-operation-grid>.panel:first-child{grid-column:1/-1}.content-operation-grid .panel{margin-top:0}.banner-row{grid-template-columns:112px 1fr auto;align-items:center}.banner-row>img{width:112px;height:58px;border:1px solid var(--line);border-radius:9px;background:#f1f0eb;object-fit:cover}
.content-image-link{display:block;width:max-content;border-radius:9px}.content-thumb{display:block;width:96px;height:52px;border:1px solid var(--line);border-radius:9px;background:#f1f0eb;object-fit:cover}
.image-upload{display:grid;gap:9px}.image-upload-label{color:#4b5653;font-size:13px;font-weight:700}.image-upload-body{display:flex;align-items:center;gap:18px;padding:14px;border:1px dashed #c9ccc4;border-radius:13px;background:#fafaf7}.image-picker{position:relative;flex:none;cursor:pointer}.image-picker input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}.image-preview{width:112px;height:112px;display:grid;place-items:center;overflow:hidden;border:1px solid var(--line);border-radius:13px;color:var(--teal);background:#efeee8;font-size:30px}.image-preview img{width:100%;height:100%;display:block;object-fit:cover}.image-preview span{display:grid;place-items:center;gap:4px}.image-preview small{color:var(--muted);font-size:12px;font-weight:650}.image-upload-copy{display:grid;justify-items:start;gap:7px}.image-upload-copy strong{font-size:14px}.image-upload-copy small{color:var(--muted);font-size:12px;font-weight:400}.image-remove{padding:5px 9px;border:0;border-radius:7px;color:#a84035;background:#f8ded7;cursor:pointer;font-size:12px}.image-upload [hidden]{display:none!important}
dialog{width:min(680px,calc(100% - 32px));max-height:calc(100vh - 50px);padding:0;border:0;border-radius:18px;box-shadow:0 30px 100px rgba(10,30,25,.3)}dialog.question-modal{width:min(980px,calc(100% - 32px))}dialog.confirm-modal{width:min(460px,calc(100% - 32px))}dialog.share-modal{width:min(560px,calc(100% - 24px))}dialog.purchase-plan-modal{width:min(900px,calc(100% - 32px))}dialog::backdrop{background:rgba(7,26,22,.45);backdrop-filter:blur(3px)}.modal-card{display:flex;flex-direction:column;max-height:calc(100vh - 50px)}.modal-card header,.modal-card footer{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px}.modal-card header{border-bottom:1px solid var(--line)}.modal-card footer{justify-content:flex-end;border-top:1px solid var(--line);background:#faf9f5}.modal-card h2{margin:0;font:600 23px Georgia,"Noto Serif SC",serif}.icon-button{width:34px;height:34px;border-radius:50%;font-size:24px;color:var(--muted);background:#efeee9}#modal-body{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:24px;overflow:auto}#modal-body .full{grid-column:1/-1}dialog.question-modal #modal-body{display:block;padding:0;background:#f7f7f3}dialog.confirm-modal #modal-body{display:block;padding:28px 30px}dialog.share-modal #modal-body{display:block;padding:22px;background:#f3f3f8}dialog.purchase-plan-modal #modal-body{display:block;padding:24px;background:#f7f7fb}.confirm-card-content{display:grid;justify-items:center;text-align:center}.confirm-card-icon{width:48px;height:48px;display:grid;place-items:center;margin-bottom:14px;border-radius:50%;color:#a84035;background:#f8ded7;font-size:24px;font-weight:850}.confirm-card-content strong{font:600 22px Georgia,"Noto Serif SC",serif}.confirm-card-content p{margin:12px 0 0;color:var(--muted);font-size:14px;line-height:1.75}.share-poster-wrap{text-align:center}.share-poster-canvas{width:min(100%,390px);height:auto;display:block;margin:0 auto;border-radius:18px;background:#5b5ce2;box-shadow:0 16px 36px rgba(54,49,150,.2)}.share-poster-wrap p{max-width:430px;margin:14px auto 0;color:#818394;font-size:12px;line-height:1.7}.share-poster-loading,.share-poster-error{min-height:360px;display:grid;place-items:center;align-content:center;gap:10px;text-align:center}.share-poster-loading span{width:34px;height:34px;border:3px solid #ddddf5;border-top-color:#5b5ce2;border-radius:50%;animation:share-spin .8s linear infinite}.share-poster-loading strong,.share-poster-error strong{font-size:16px}.share-poster-loading small,.share-poster-error p{margin:0;color:#8b8c9b;font-size:12px}@keyframes share-spin{to{transform:rotate(360deg)}}.question-editor{display:grid;gap:14px;padding:20px}.question-editor-section{padding:20px;border:1px solid #e4e3dc;border-radius:14px;background:#fff}.question-section-title{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:16px;color:#3f4947;font-size:14px;font-weight:800}.question-section-title small,.question-answer-picker>small,.question-sort-answer small,.question-analysis small{color:#929a98;font-size:11px;font-weight:500}.question-editor i{color:#e85c48;font-style:normal}.question-editor-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.question-stem textarea{min-height:92px}.question-option-list{display:grid;gap:12px}.question-option-row{display:grid;grid-template-columns:38px 1fr 52px;align-items:center;gap:10px}.question-option-row>strong{font-size:15px;text-align:center}.question-option-row>button{height:38px;border:0;border-radius:8px;color:#b34538;background:#fff0ec;cursor:pointer;font-size:12px}.add-question-option{margin:14px 0 0;padding:9px 14px;border:1px solid var(--teal);border-radius:9px;color:var(--teal);background:#fff;cursor:pointer;font-size:13px;font-weight:750}.question-answer-picker{display:grid;gap:10px;margin-top:20px;padding-top:18px;border-top:1px solid #ecebe6;color:#3f4947;font-size:14px;font-weight:800}.question-answer-picker>div{display:flex;flex-wrap:wrap;gap:9px}.question-answer-picker label{min-width:120px;display:flex;grid:unset;align-items:center;gap:8px;padding:10px 12px;border:1px solid #e1e3dc;border-radius:10px;background:#fafbf9;cursor:pointer;font-weight:600}.question-answer-picker input{width:17px;height:17px;flex:none;margin:0;accent-color:var(--teal)}.question-answer-picker label:has(input:checked){border-color:#76aa9e;background:#edf7f3}.question-answer-picker strong{color:var(--teal)}.question-answer-picker em{max-width:155px;overflow:hidden;font-style:normal;font-weight:500;white-space:nowrap;text-overflow:ellipsis}.question-sort-answer,.question-answer-free{display:grid;gap:8px;margin-top:18px;padding-top:18px;border-top:1px solid #ecebe6}.question-answer-free{margin:0;padding:0;border:0}.question-analysis{grid-column:1/-1}.question-analysis textarea{min-height:100px}.question-analysis small{margin-top:-2px}.form-error{padding:12px 14px;border:1px solid #e9b7aa;border-radius:10px;color:#9d3525;background:#fff3ef;line-height:1.6;white-space:pre-wrap;overflow-wrap:anywhere}.form-error[hidden]{display:none}#toast{position:fixed;right:28px;bottom:26px;z-index:100;max-width:min(640px,calc(100vw - 56px));transform:translateY(30px);opacity:0;padding:12px 17px;border-radius:10px;color:#fff;background:var(--ink);box-shadow:var(--shadow);transition:.25s;pointer-events:none;white-space:pre-wrap;overflow-wrap:anywhere}#toast.show{transform:translateY(0);opacity:1}
@media(max-width:1050px){.stat-grid{grid-template-columns:repeat(2,1fr)}.split-grid{grid-template-columns:1fr}.bank-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.panel-header:has(.list-search){align-items:flex-start;flex-direction:column}.list-search{width:100%}.list-search input{flex:1;width:auto}.question-editor-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:760px){.login-page{padding:0}.login-shell{min-height:100vh;grid-template-columns:1fr;border-radius:0}.login-brand{display:none}.login-card{padding:40px 28px}.admin-page{grid-template-columns:1fr}.sidebar{transform:translateX(-100%);transition:.25s}.nav-open .sidebar{transform:translateX(0);box-shadow:30px 0 70px rgba(0,0,0,.22)}.workspace{grid-column:1}.topbar{height:88px;padding:0 18px}.menu-button{display:block}.account>div:not(.avatar),.text-button{display:none}#account-settings-button{display:inline-block;margin-left:0}.content{padding:22px 16px 50px}.stat-grid{grid-template-columns:1fr 1fr;gap:10px}.stat-card{min-height:125px;padding:17px}.stat-card strong{margin-top:18px;font-size:28px}.panel-header,.section-head{align-items:flex-start;flex-direction:column}.bank-grid{grid-template-columns:1fr}.list-search{flex-wrap:wrap}.list-search input{flex-basis:100%;min-width:0}.pager{flex-wrap:wrap;justify-content:flex-start}.pager-summary{width:100%;margin:0 0 4px}.redeem-view-tabs{width:100%}.redeem-view-tab{flex:1;min-width:0}#modal-body{grid-template-columns:1fr}#modal-body .full{grid-column:auto}.question-editor{padding:12px}.question-editor-section{padding:15px}.question-editor-grid{grid-template-columns:1fr}.question-option-row{grid-template-columns:30px 1fr 48px}.question-answer-picker label{min-width:calc(50% - 5px)}}@media(max-width:430px){.stat-grid{grid-template-columns:1fr}}
@media(max-width:1050px){.content-operation-grid{grid-template-columns:1fr}.content-operation-grid>.panel:first-child{grid-column:auto}}

/* 与前台统一的紫白色视觉系统 */
.login-page{background:radial-gradient(circle at 15% 10%,#eeeeff 0,transparent 30%),var(--paper)}
.login-shell{border:1px solid var(--line);background:var(--surface)}
.login-brand{background:radial-gradient(circle at 85% 12%,rgba(157,161,255,.55),transparent 28%),linear-gradient(145deg,#4d4ed1 0%,#6869e8 57%,#8687ed 100%)}
.login-brand .brand-mark{color:var(--teal);background:#fff;box-shadow:0 10px 35px rgba(32,34,90,.18)}
.login-brand .eyebrow{color:#dfe0ff}.login-brand>p:last-of-type{color:rgba(255,255,255,.76)}
.login-orbit{border-color:rgba(255,255,255,.18)}.orbit-two{border-color:#dfe0ff}
label,.form-images,.image-upload-label{color:#62647a}
input:focus,select:focus,textarea:focus{border-color:#8d8de9;box-shadow:0 0 0 3px rgba(91,92,226,.09)}
.button.primary{background:linear-gradient(135deg,#635bee 0%,#4f46e5 100%);box-shadow:0 8px 22px rgba(91,92,226,.22)}
.button.ghost,.page-button,.redeem-view-tabs{color:#62647a;background:#f0f0f4}
.button.danger,.actions button.danger,.image-remove{color:#c94747;background:#fff1f1}
.admin-page{background:var(--paper)}
.sidebar{color:#77798b;border-right:1px solid #ececf2;background:#fff}
.sidebar .brand-mark{color:#fff;background:linear-gradient(145deg,#6768ea,#4d4ed0);box-shadow:0 8px 22px rgba(70,71,170,.2)}
.brand strong{color:var(--ink)}.brand small{color:#a0a1ad}
.side-nav a{color:#77798b}.side-nav a span{color:#77798b;border-color:#e5e5f1;background:#fafafd}
.side-nav a:hover{color:#5152c4;background:#f7f7fd}.side-nav a.active{color:#5152cf;background:#eeeeff}
.side-nav a.active span{color:#fff;border-color:#5b5ce2;background:#5b5ce2}
.sidebar-foot{color:#8a8b99;border-top-color:#ececf2}.status-dot{background:#23ad79;box-shadow:0 0 0 4px rgba(35,173,121,.12)}
.topbar{border-bottom-color:rgba(232,233,240,.9);background:rgba(255,255,255,.88)}
.avatar{background:linear-gradient(145deg,#6768ea,#4d4ed0)}
.loading-card,.empty{border-color:#d8d9e6;background:rgba(255,255,255,.65)}
.stat-card,.panel,.bank-card{box-shadow:0 8px 28px rgba(35,36,65,.035)}
.stat-card:after{border-color:#eeeeff}.stat-card.coral:after{border-color:#fff0f0}.stat-card.sand:after{border-color:#fff2dd}
.stat-card small,.mini-row small{color:#9697a6}
.panel-header{border-bottom-color:#eeeef3}.modal-card footer,th{background:#fafafd}
th{color:#999aa7}th,td,.mini-row,.bank-card footer{border-bottom-color:#efeff3}tbody tr:hover{background:#f8f8fb}
.badge{color:#5556cd;background:#eeeeff}.badge.gray{color:#777889;background:#f0f0f3}.badge.coral{color:#c94747;background:#fff0f0}
.actions button{color:#5556cd;background:#eeeeff}
.page-button:hover:not(:disabled),.page-button.active,.redeem-view-tab.active{color:#fff;background:var(--teal);box-shadow:0 5px 14px rgba(91,92,226,.2)}
.active-filter{color:#5556cd;border-color:#dfe0ff;background:#f3f3ff}.active-filter button{color:#5556cd}
.bank-thumb{color:#5556cd;background:#eeeeff}.bank-open{background:linear-gradient(145deg,#fff 55%,#f3f3ff)}
.feedback-images a:focus-visible{box-shadow:0 0 0 3px rgba(91,92,226,.16)}
.feedback-images img,.banner-row>img,.content-thumb{background:#f7f7fb}
.image-upload-body{border-color:#d8d9e6;background:#fafafd}.image-preview{background:#eeeeff}
dialog{box-shadow:0 30px 100px rgba(35,36,70,.24)}dialog::backdrop{background:rgba(29,30,60,.42)}
.icon-button{background:#f0f0f4}dialog.question-modal #modal-body{background:#f7f7fb}
.question-editor-section{border-color:#e8e9ef}.question-section-title,.question-answer-picker{color:#454658}
.question-answer-picker label{border-color:#e3e4eb;background:#fafafd}.question-answer-picker label:has(input:checked){border-color:#9292e7;background:#f0f0ff}
.question-option-row>button{color:#c94747;background:#fff1f1}
.form-error{border-color:#f1cece;color:#ad4141;background:#fff5f5}
@media(max-width:760px){.nav-open .sidebar{box-shadow:30px 0 70px rgba(35,36,70,.18)}}

/* 题干与选项图片编辑 */
.question-stem-editor{display:grid;gap:18px}.question-stem{display:grid;gap:8px}.question-image-upload{display:grid;gap:9px}.question-image-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;color:#62647a;font-size:13px;font-weight:750}.question-image-head small{color:#9697a6;font-size:11px;font-weight:500}.question-image-body{display:flex;align-items:center;gap:14px;padding:13px;border:1px dashed #d8d9e6;border-radius:12px;background:#fafafd}.question-image-body>a{display:block;flex:none}.question-image-body img{display:block;width:150px;max-height:120px;border:1px solid #e4e5ed;border-radius:10px;background:#fff;object-fit:contain}.question-image-placeholder{width:150px;height:82px;display:grid;flex:none;place-items:center;border:1px solid #e6e7ee;border-radius:10px;color:#a0a1ad;background:#f2f2f7;font-size:12px}.question-image-body>div,.question-option-media{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.question-image-picker,.question-option-image-picker{display:inline-flex!important;position:relative;align-items:center;justify-content:center;cursor:pointer}.question-image-picker input,.question-option-image-picker input{position:absolute!important;width:1px!important;height:1px!important;opacity:0;pointer-events:none}.question-image-picker span,.question-option-image-picker span{display:inline-flex;align-items:center;justify-content:center;padding:7px 11px;border:1px solid #7778e3;border-radius:8px;color:#5556cd;background:#fff;font-size:12px;font-weight:750}.question-image-remove,.question-option-media>button{padding:7px 10px;border:0;border-radius:8px;color:#c94747;background:#fff1f1;cursor:pointer;font-size:12px}.question-option-row{align-items:start}.question-option-content{display:grid;gap:8px}.question-option-media{min-height:34px;padding:7px 9px;border:1px dashed #e0e1e9;border-radius:9px;background:#fafafd}.question-option-media>a{display:block;flex:none}.question-option-media img{display:block;width:70px;height:54px;border:1px solid #e3e4eb;border-radius:7px;background:#fff;object-fit:contain}.question-option-media small{margin-left:auto;color:#a0a1ad;font-size:10px}.question-answer-picker em{max-width:190px}
@media(max-width:760px){.question-image-head{align-items:flex-start;flex-direction:column;gap:4px}.question-image-body{align-items:flex-start;flex-direction:column}.question-image-body img,.question-image-placeholder{width:100%;height:auto;min-height:82px;max-height:180px}.question-option-row{grid-template-columns:28px minmax(0,1fr)}.question-option-row>button{grid-column:2;width:max-content;height:32px}.question-option-media small{width:100%;margin-left:0}}
[hidden]{display:none!important}
.redeem-search{flex-wrap:wrap;justify-content:flex-end}
.cell-note { display: block; margin-top: 6px; color: var(--muted, #8b92a1); font-size: 12px; font-weight: 400; }
.purchase-plan-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:18px}.purchase-plan-head>div{display:grid;gap:5px}.purchase-plan-head strong{font-size:15px}.purchase-plan-head p{margin:0;color:var(--muted,#737b8d);font-size:12px;line-height:1.6}.purchase-plan-list{display:grid;gap:12px}.purchase-plan-card{padding:18px;border:1px solid #e4e5ee;border-radius:15px;background:#fff;box-shadow:0 7px 22px rgba(35,36,70,.035)}.purchase-plan-card.archived{background:#fafafd;box-shadow:none}.purchase-plan-card-head,.purchase-plan-card-head>div,.purchase-plan-actions{display:flex;align-items:center}.purchase-plan-card-head{justify-content:space-between;gap:14px}.purchase-plan-card-head>div{gap:10px}.purchase-plan-card-head>div>strong{font-size:16px}.purchase-plan-card-head>small{color:#a0a1ad;font-size:11px}.purchase-plan-metrics{display:grid;grid-template-columns:1fr 1fr 2fr;gap:12px;margin:15px 0;padding:14px 0;border-top:1px solid #f0f0f4;border-bottom:1px solid #f0f0f4}.purchase-plan-metrics>div{display:grid;align-content:start;gap:5px;min-width:0}.purchase-plan-metrics span{color:#9697a6;font-size:11px}.purchase-plan-metrics strong{font-size:14px}.purchase-plan-price{color:#5152cf;font-size:17px!important}.purchase-plan-metrics del{color:#a6a7b3;font-size:11px}.purchase-plan-product code{display:block;overflow:hidden;color:#454658;font-size:12px;white-space:nowrap;text-overflow:ellipsis}.purchase-plan-actions{justify-content:flex-end;gap:8px}.purchase-plan-empty{display:grid;justify-items:center;gap:7px;padding:46px 20px;border:1px dashed #d9dae5;border-radius:15px;color:#8b8c9b;text-align:center;background:#fff}.purchase-plan-empty strong{color:#4b4c5e}.purchase-plan-archive{margin-top:16px;border:1px solid #e5e5ec;border-radius:13px;background:#f1f1f5}.purchase-plan-archive summary{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 16px;color:#777889;cursor:pointer;font-size:12px;font-weight:750;list-style:none}.purchase-plan-archive summary::-webkit-details-marker{display:none}.purchase-plan-archive summary:after{content:'展开';color:#5556cd}.purchase-plan-archive[open] summary:after{content:'收起'}.purchase-plan-archive summary span{margin-left:auto;color:#a0a1ad;font-weight:500}.purchase-plan-archive .purchase-plan-list{padding:0 12px 12px}
@media(max-width:760px){dialog.purchase-plan-modal #modal-body{padding:16px}.purchase-plan-head{align-items:stretch;flex-direction:column}.purchase-plan-head .button{width:100%}.purchase-plan-metrics{grid-template-columns:1fr 1fr}.purchase-plan-product{grid-column:1/-1}.purchase-plan-actions{justify-content:stretch}.purchase-plan-actions .button{flex:1}.purchase-plan-archive summary span{display:none}}