:root{font-family:"Segoe UI","Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:#1f252d;background:#f3f5f8;font-size:14px;line-height:1.6;--muted:#68717d;--border:#e4e8ee;--control:#cbd2dc;--accent:#175cd3;--sheet:#fff;--ink:#1f252d}
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5px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;text-align:left;font-size:13px}th{font-size:12px;color:var(--muted);font-weight:400}th,td{padding:14px 10px;border-bottom:1px solid var(--border);vertical-align:top}th:first-child,td:first-child{padding-left:0}th:last-child,td:last-child{padding-right:0}td .mono{font-size:11px;color:#87909b;margin-top:4px}td button{min-height:32px;padding:5px 10px;font-size:12px}.admin-shell{max-width:1440px;padding:0 24px 24px}.admin-shell>.top{min-height:76px;margin-bottom:12px}.admin-layout{display:grid;grid-template-columns:180px minmax(0,1fr);gap:20px;align-items:start}.admin-nav{position:sticky;top:20px;display:flex;flex-direction:column;gap:6px;padding-top:12px}.admin-nav>button{display:flex;align-items:center;justify-content:flex-start;gap:12px;padding:10px 14px;border:0;background:transparent;min-height:42px;font-size:13px;color:#626e7a}.admin-nav>button[aria-pressed=true]{background:#e3e8ef;color:#253344;font-weight:600}.admin-nav>button svg{display:block;width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}.admin-nav>p{font-size:11px;line-height:1.8;color:#8a939d;padding:20px 14px}.admin-sheet{background:#fff;border:1px solid var(--border);border-radius:16px;padding:26px 30px;min-width:0;min-height:calc(100dvh - 112px)}.admin-page-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}.admin-page-heading h1{font-size:24px;margin:0}.admin-page-heading>.muted{font-size:11px;text-align:right}.admin-sheet .panel{padding:0;border:0;border-radius:0;margin-bottom:28px}.admin-sheet .panel:not(:last-child){padding-bottom:24px;border-bottom:1px solid var(--border)}.review-queue{display:grid;gap:12px}.review-order{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 20px;padding:16px 0;border-bottom:1px solid var(--border);min-width:0}.review-order:last-child{border-bottom:0}.review-order>strong{font-size:20px;font-weight:600;font-variant-numeric:tabular-nums}.review-order>p{margin:0;grid-column:1;overflow-wrap:anywhere;font-size:12px}.review-order>.row{grid-column:2;grid-row:1/5;align-content:center}.review-order button{font-size:12px;min-height:36px;padding:8px 12px}.inline-count{display:inline-block;font-size:12px;font-weight:500;color:#727e8c;margin-left:6px}.settings-columns{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px}.settings-columns>section{padding-right:30px!important;border-right:1px solid var(--border);border-bottom:0!important}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.settings-grid label{min-width:0}.field-help{font-size:12px;color:var(--muted);line-height:1.6;margin:-7px 0 18px}.check{display:flex;align-items:center;gap:9px}.check input{display:inline-block;width:17px;height:17px;min-height:0;margin:0;accent-color:#295c9a;flex:none}.image-previews{display:grid;grid-template-columns:1fr 1fr;gap:16px;font-size:12px;margin-top:18px}.image-previews img{display:block;max-width:100%;max-height:140px;object-fit:contain}.image-previews p{font-size:12px}input[type=file]{padding:9px;min-width:0;font-size:12px}.records-columns{display:grid;grid-template-columns:1.2fr 1fr;gap:32px}.audit-list{max-height:400px;overflow:auto;scrollbar-width:thin}.audit-list p{padding:9px 0;margin:0;border-bottom:1px solid #f0f2f5;color:#697481;font-size:11px}.ownership-note{padding-top:12px;border-top:1px solid var(--border);color:var(--muted)}.admin-login{max-width:430px;padding:32px;margin:70px auto}.admin-login h1{font-size:26px;margin-bottom:10px}.admin-login>.muted{margin-bottom:25px;font-size:13px}.admin-login input{height:46px}.login-note{margin:18px 0 0;color:#8a939d;font-size:11px}.admin-page[data-authenticated=true] .admin-login{display:none}.course-publishing{min-width:0}.course-publishing-head{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:14px}.course-publishing-head h2{margin:0}.course-publishing-current{font-size:13px;color:var(--muted);overflow-wrap:anywhere;padding:12px 0;border-block:1px solid var(--border);margin:18px 0}.course-publishing label{max-width:620px;margin-top:18px;margin-bottom:6px}.course-publishing select{max-width:100%;text-overflow:ellipsis}.course-publishing-detail{font-size:12px;min-height:20px;margin-bottom:16px}.course-publishing-result{padding:12px 0 0;overflow-wrap:anywhere;font-size:13px}.course-publishing>p:last-child{font-size:12px;margin-top:16px;max-width:700px;color:var(--muted)}dialog{width:min(460px,calc(100vw - 32px));max-height:calc(100dvh - 32px);border:1px solid var(--border);border-radius:18px;padding:24px;color:var(--ink);background:#fff;overflow:auto;box-shadow:0 18px 60px #101b2b22}dialog::backdrop{background:#18233170}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px}.dialog-heading h2{margin:0}.icon-close{width:32px;min-width:32px;height:32px;min-height:32px;padding:0;border:0;border-radius:50%;font:24px/1 system-ui}.checkout-amount{font-size:28px;font-weight:600;margin:8px 0 4px;font-variant-numeric:tabular-nums}.qr{max-width:230px;margin:18px auto}.qr svg,.qr img{display:block;width:100%;height:auto}#receipt-form{margin:20px 0}#receipt-form button{width:100%}dialog>small{display:block;margin-top:14px;font-size:11px}.code{width:100%;height:130px;resize:vertical}footer{font-size:12px;color:#606a76;padding:18px 0 24px}a{color:inherit}:focus-visible{outline:2px solid #7d9fcf;outline-offset:3px}:focus:not(:focus-visible){outline:none}[hidden]{display:none!important}
@media(max-width:1000px){.shell{padding-inline:24px}.purchase{grid-template-columns:minmax(0,1.15fr) minmax(280px,1fr);gap:20px}.product-panel{padding:24px}.course-proof img{height:110px}.purchase-actions{display:grid;grid-template-columns:1fr}.admin-layout{grid-template-columns:160px minmax(0,1fr);gap:14px}.admin-sheet{padding:24px}.settings-columns{grid-template-columns:1fr;gap:24px}.settings-columns>section{padding-right:0!important;border-right:0;border-bottom:1px solid var(--border)!important}.review-order{grid-template-columns:1fr}.review-order>.row{grid-column:1;grid-row:auto;margin-top:10px}.records-columns{grid-template-columns:1fr}}
@media(max-width:760px){.purchase{grid-template-columns:1fr}.purchase-aside{display:grid;grid-template-columns:1.1fr 1fr;gap:20px}.product-panel{padding:24px}.course-proof img{height:150px}.purchase-actions{display:flex}.purchase-actions .primary{min-width:200px}.top{min-height:76px;margin-bottom:22px}.page-heading{margin-bottom:22px}.page-heading h1{font-size:25px}.email-panel{padding:22px;margin-bottom:0}.purchase-guide{padding:6px 0 0}.admin-shell{padding:0 16px 16px}.admin-shell>.top{min-height:68px;margin-bottom:8px}.brand small{display:none}.admin-layout{display:block}.admin-nav{position:static;flex-direction:row;overflow:auto;scrollbar-width:none;gap:4px;padding:0 0 12px}.admin-nav>button{flex:none;padding:9px 12px;min-height:42px;font-size:12px}.admin-nav>p{display:none}.admin-sheet{padding:22px 20px;border-radius:14px;min-height:0}.admin-page-heading{margin-bottom:20px}.admin-page-heading h1{font-size:22px}.summary{gap:12px;padding-bottom:20px;margin-bottom:24px}.summary>div{padding-right:8px}.summary p{font-size:11px}.count{font-size:22px}.section-heading{align-items:flex-start}.section-heading>.muted{font-size:11px}.settings-columns{display:block}.settings-grid{gap:12px}.settings-columns>section{padding-right:0!important}.bind-row{grid-template-columns:1fr}.customer-workspace{margin-top:20px}.bind-row button{width:100%}.top nav{gap:6px}.top nav .muted{max-width:210px}.admin-page .top nav .button{font-size:0;gap:0;padding:6px 10px}.admin-page .top nav .button>span{font-size:18px}.admin-page .top nav button{padding:7px 10px}.admin-login{margin:42px auto}}
@media(max-width:540px){.shell{padding-inline:16px}.top{gap:12px;flex-wrap:wrap;padding-top:16px;padding-bottom:16px;min-height:76px;margin-bottom:14px}.brand{font-size:17px}.top nav{gap:8px}.buy-page .top nav .muted{max-width:135px;font-size:11px}.buy-page[data-customer-session=true] .top{align-items:flex-start}.buy-page[data-customer-session=true] .top nav{margin-left:auto}.buy-page[data-customer-session=true] .top nav .muted{display:none}.page-heading{gap:10px;margin-top:6px}.page-heading .scope-label{display:none}.page-heading h1{font-size:24px}.page-heading .muted{font-size:13px}.product-panel{padding:22px}.product-heading h2{font-size:21px}.product-heading>img{width:36px;height:36px}.offer-price{margin-top:22px}.price{font-size:52px}.course-proof{gap:10px;margin-bottom:16px;padding-bottom:16px}.course-proof img{height:98px}.course-proof figcaption{font-size:11px}.rights{font-size:12px;gap:7px;margin-bottom:18px}.device-allowance{font-size:13px;margin-bottom:20px}.purchase-actions{display:grid;grid-template-columns:1fr}.purchase-actions .primary{min-width:0}.purchase-actions>button{min-height:44px}.purchase-aside{display:block}.email-panel{padding:22px;margin-bottom:22px}.purchase-guide{padding:0 4px}.purchase-guide ol{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.purchase-guide li{padding:0 0 16px}.purchase-guide li::before{position:static;display:block;margin-bottom:6px}.purchase-guide li span{font-size:12px}.purchase-guide li small{font-size:11px}.panel{padding:20px}.section-heading{flex-direction:column;gap:6px}.section-heading h2{font-size:16px}.account-head{gap:8px}.admin-page .top{padding-block:12px;flex-wrap:nowrap}.admin-page .brand{gap:8px;font-size:16px}.admin-page .brand img{width:26px;height:26px}.admin-page .top nav{gap:4px;flex-wrap:nowrap}.admin-page .top nav button{font-size:11px;padding:7px 8px}.admin-page-heading{display:block}.admin-page-heading>.muted{display:block;text-align:left;font-size:10px;margin-top:8px}.admin-sheet{padding:20px 16px}.admin-nav>button{gap:7px;padding:9px 10px}.admin-nav svg{width:16px;height:16px}.admin-nav{margin-right:-4px}.summary{gap:10px}.summary .count{font-size:20px}.summary>div{padding-right:6px}.table-wrap{overflow:visible}table,tbody{display:block}thead{display:none}tbody tr{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px 12px;padding:14px 0;border-bottom:1px solid var(--border)}td{display:block;border:0;padding:0!important;font-size:12px}td:first-child{grid-column:1/-1;font-size:13px;margin-bottom:2px}td:nth-child(3),td:nth-child(5){text-align:right}td:nth-child(3){font-weight:600}td .mono{font-size:10px}td[colspan]{grid-column:1/-1}.review-order{padding:10px 0 16px}.review-order .row{gap:8px}.review-order .row button{min-height:40px}.settings-grid{grid-template-columns:1fr 1fr;gap:10px}.settings-grid input{padding:10px}.settings-grid label{font-size:12px}.settings-columns>section{padding-bottom:20px!important}.field-help{font-size:11px}.row{gap:8px}.row button{font-size:12px}.admin-login{margin:28px auto;padding:26px 22px}.admin-login h1{font-size:24px}.course-publishing-head h2{font-size:16px}.course-publishing-head button{font-size:11px;min-height:36px;padding:7px 10px}.course-publishing .row button{width:100%}.course-publishing-current{font-size:12px}.course-publishing>p:last-child{font-size:11px}dialog{padding:22px}.message{font-size:12px;padding:10px 12px}.ownership-note{font-size:12px}}
@media(prefers-reduced-motion:no-preference){button{transition:background .12s ease,border-color .12s ease}}

@media(max-width:540px){.admin-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));overflow:visible;gap:4px;padding:0 0 12px;margin:0}.admin-nav>button{flex-direction:column;justify-content:center;gap:3px;min-width:0;min-height:56px;padding:6px 2px;font-size:11px;line-height:1.2;text-align:center;white-space:normal}.admin-nav>button svg{width:16px;height:16px}}

@media(max-width:540px){.purchase-aside{display:contents}.email-panel{order:-1}.product-panel{order:0}.purchase-guide{order:1}}