:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:#172033;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--bg:#f6f8fb;--surface:#fff;--surface-strong:#eef4f6;--text:#172033;--muted:#667085;--line:#d9e1e8;--primary:#0f766e;--primary-strong:#115e59;--blue:#2563eb;--amber:#b45309;--rose:#be123c;--green:#15803d;--shadow:0 18px 40px #212b3614;background:#f6f8fb;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-weight:400;line-height:1.5}:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#101419;--surface:#171d24;--surface-strong:#202a33;--text:#eff6ff;--muted:#a9b4c2;--line:#2e3a46;--primary:#2dd4bf;--primary-strong:#14b8a6;--blue:#60a5fa;--amber:#f59e0b;--rose:#fb7185;--green:#4ade80;--shadow:0 18px 40px #0000003d}*{box-sizing:border-box}body{background:var(--bg);min-width:320px;min-height:100vh;color:var(--text);margin:0;overflow-x:hidden}button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}img{max-width:100%}.app-shell{grid-template-columns:260px minmax(0,1fr);min-height:100vh;display:grid}.sidebar{border-right:1px solid var(--line);background:var(--surface);flex-direction:column;gap:24px;height:100vh;padding:22px 18px;display:flex;position:sticky;top:0}.mobile-nav-header{justify-content:space-between;align-items:center;gap:12px;min-width:0;display:flex}.mobile-menu-button{display:none}.brand{color:var(--primary-strong);align-items:center;gap:10px;min-width:0;font-size:1.05rem;font-weight:800;display:flex}.brand span{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.brand-logo,.auth-logo{object-fit:cover;background:#000;border-radius:8px;flex:none}.brand-logo{width:42px;height:42px}.auth-logo{width:72px;height:72px}.nav-list{gap:8px;display:grid}.nav-link{min-height:42px;color:var(--muted);white-space:nowrap;border-radius:8px;align-items:center;gap:10px;padding:10px 12px;display:flex}.nav-link.active,.nav-link:hover{color:var(--text);background:var(--surface-strong)}.main{min-width:0;padding:24px;overflow:hidden}.topbar{margin-bottom:20px;margin-inline:-24px;color:#fff;background:#047234;border-bottom:1px solid #ffffff29;justify-content:space-between;align-items:center;gap:16px;min-height:74px;margin-top:-24px;padding:18px 24px;display:flex}.topbar h1,.section-heading h2,.auth-brand h1,.reader-toolbar h1{letter-spacing:0;margin:0}.topbar h1{font-size:clamp(1.35rem,2vw,1.8rem)}.topbar .eyebrow{color:#ffffffc7}.eyebrow{color:var(--muted);text-transform:uppercase;letter-spacing:0;margin:0 0 4px;font-size:.74rem;font-weight:800}.account-chip{color:var(--primary-strong);text-transform:capitalize;background:#0f766e1f;border:0;border-radius:8px;padding:8px 12px;font-weight:700}.account-chip-button{cursor:pointer}.topbar .account-chip{color:#fff;background:#0000002e}.topbar .account-chip-button:hover{background:#ffffff29}.topbar-actions{flex-shrink:0;align-items:center;gap:10px;display:flex}.announcement-bar{border:1px solid var(--line);background:var(--surface);height:38px;box-shadow:var(--shadow);border-radius:8px;align-items:center;margin:-10px 0 18px;font-weight:800;display:flex;overflow:hidden}.announcement-track{white-space:nowrap;will-change:transform;backface-visibility:hidden;width:max-content;min-width:max-content;animation:announcement-marquee var(--announcement-duration,180s) linear infinite;display:inline-flex;transform:translate(0,0)}.announcement-group{flex:none;display:inline-flex}.announcement-group span{flex:none;padding-inline:34px;position:relative}.announcement-group span:after{content:"";opacity:.45;background:currentColor;border-radius:999px;width:6px;height:6px;position:absolute;top:50%;right:0;transform:translate(50%,-50%)}@keyframes announcement-marquee{0%{transform:translate(0,0)}to{transform:translate(-50%)}}.page-section{gap:18px;display:grid}.page-section.narrow{max-width:760px}.section-heading{justify-content:space-between;align-items:center;gap:16px;min-width:0;display:flex}.section-heading h2{overflow-wrap:anywhere;font-size:clamp(1.3rem,2vw,1.8rem)}.department-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;display:grid}.department-card{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);border-radius:8px;display:grid;overflow:hidden}.department-image{aspect-ratio:16/9;object-fit:cover;background:var(--surface-strong);width:100%}.department-placeholder{color:var(--primary-strong);background:linear-gradient(135deg, #0f766e2e, #2563eb1f), var(--surface-strong);place-items:center;display:grid}.department-content{gap:14px;padding:18px;display:grid}.department-title-row,.surface-row{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.department-title-row h2,.material-item h3,.surface h3{margin:0;font-size:1.05rem}.department-content p,.surface p,.material-item p{color:var(--muted);margin:0}.department-meta{color:var(--muted);flex-wrap:wrap;gap:10px 14px;font-size:.92rem;display:flex}.department-meta span,.button,.segmented button,.checkbox-row{align-items:center;gap:8px;display:inline-flex}.button{min-height:42px;color:var(--text);background:var(--surface-strong);text-align:center;border:1px solid #0000;border-radius:8px;justify-content:center;padding:10px 14px;font-weight:800}.button-primary{color:#fff;background:var(--primary-strong)}.button-secondary{color:#fff;background:var(--blue)}.button-ghost{border-color:var(--line);background:0 0}.button-small{min-height:34px;padding:6px 10px;font-size:.88rem}.button-wide{width:100%}.icon-button{border:1px solid var(--line);width:40px;height:40px;color:var(--text);background:var(--surface);border-radius:8px;place-items:center;display:inline-grid}.topbar .icon-button{color:#fff;background:#00000024;border-color:#ffffff57}.topbar .icon-button:hover{background:#ffffff29}.badge{white-space:nowrap;border-radius:999px;justify-content:center;align-items:center;min-height:26px;padding:4px 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0;border:0;border-radius:6px;justify-content:center;font-weight:800}.segmented button.active{color:var(--text);background:var(--surface);box-shadow:0 1px 3px #1018281a}.form-grid{gap:14px;display:grid}.admin-form{grid-template-columns:repeat(3,minmax(0,1fr));align-items:end}.floating-form-panel{border:1px solid var(--line);background:color-mix(in srgb, var(--surface) 94%, transparent);border-radius:8px;overflow:hidden;box-shadow:0 18px 45px #1018281f}.floating-form-panel[open]{border-color:color-mix(in srgb, var(--primary) 42%, var(--line))}.floating-form-summary{cursor:pointer;background:linear-gradient(180deg, color-mix(in srgb, var(--surface-strong) 70%, transparent), transparent), var(--surface);grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:12px;min-height:72px;padding:16px 18px;list-style:none;display:grid}.floating-form-summary::-webkit-details-marker{display:none}.floating-form-heading{gap:3px;min-width:0;display:grid}.floating-form-heading strong{color:var(--text);overflow-wrap:anywhere;font-size:1.08rem}.floating-form-icon{width:42px;height:42px;color:var(--primary-strong);background:#0f766e1f;border-radius:8px;place-items:center;display:grid}.floating-form-chevron{color:var(--muted);transition:transform .16s}.floating-form-panel[open] .floating-form-chevron{transform:rotate(180deg)}.floating-form-body{padding:0 18px 18px}.floating-form-body>form{margin:0}label{color:var(--muted);gap:6px;font-size:.9rem;font-weight:700;display:grid}input,select,textarea{border:1px solid var(--line);width:100%;min-height:42px;color:var(--text);background:var(--surface);border-radius:8px;outline:none;padding:9px 11px}textarea{resize:vertical}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px #0f766e26}.password-field{display:block;position:relative}.password-field input{padding-right:48px}.password-toggle{width:34px;height:34px;color:var(--muted);background:0 0;border:0;border-radius:8px;place-items:center;display:grid;position:absolute;top:50%;right:8px;transform:translateY(-50%)}.password-toggle:hover{color:var(--text);background:var(--surface-strong)}.link-button{color:var(--primary-strong);background:0 0;border:0;padding:0;font-weight:800}.align-end{justify-self:end}.span-2{grid-column:span 2}.span-3{grid-column:span 3}.checkbox-row{grid-auto-flow:column;justify-content:start}.checkbox-row input{width:18px;min-height:18px}.file-upload-field{align-self:stretch}.file-upload-box{border:1px dashed var(--line);min-height:74px;color:var(--text);background:var(--surface);border-radius:8px;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:10px;padding:12px;display:grid}.file-upload-box input{grid-column:1/-1;min-width:0;min-height:38px;padding:7px}.cover-preview{border:1px solid var(--line);background:var(--surface);border-radius:8px;align-self:end;overflow:hidden}.cover-preview img{object-fit:cover;width:100%;height:74px;display:block}.alert{border-radius:8px;padding:12px 14px;font-weight:700}.alert-danger{color:var(--rose);background:#be123c1f}.alert-success{color:var(--green);background:#15803d1f}.payment-summary,.surface,.metric{border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow);border-radius:8px}.payment-summary{grid-template-columns:repeat(3,1fr);gap:12px;padding:16px;display:grid}.payment-summary span{color:var(--muted)}.payment-summary strong{margin-top:3px;font-size:1.1rem;display:block}.payment-method-field{grid-column:1/-1;gap:8px;display:grid}.payment-method-field>span{font-weight:700}.payment-method-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.payment-method-card{border:2px solid var(--line);min-height:150px;color:var(--text);background:var(--surface);cursor:pointer;border-radius:10px;place-items:center;gap:7px;padding:14px;display:grid}.payment-method-card:hover,.payment-method-card.selected{border-color:var(--primary);background:var(--surface-strong)}.payment-method-card.selected{box-shadow:0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent)}.payment-method-card img{object-fit:contain;width:100%;max-width:150px;height:68px}.payment-method-card small{color:var(--muted)}.activation-code-card svg{color:var(--primary-strong)}.generated-code-grid{grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px;display:grid}.generated-code{border:1px solid var(--line);color:var(--primary-strong);background:var(--surface-strong);text-align:center;overflow-wrap:anywhere;border-radius:8px;padding:12px;font:800 .98rem/1.2 ui-monospace,SFMono-Regular,Consolas,Liberation Mono,monospace}.surface{gap:12px;padding:16px;display:grid}@media (width<=620px){.payment-method-grid{grid-template-columns:1fr}}.surface.slim{box-shadow:none;justify-content:space-between;gap:12px;display:flex}.material-grid{gap:12px;display:grid}.material-item,.admin-list-item{border:1px solid var(--line);background:var(--surface);width:100%;color:var(--text);text-align:left;border-radius:8px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px;padding:14px;display:grid}.material-item:hover,.admin-list-item:hover{border-color:var(--primary)}.empty-state{border:1px dashed var(--line);min-height:120px;color:var(--muted);background:var(--surface);text-align:center;border-radius:8px;place-items:center;padding:20px;display:grid}.catalog-filters{grid-template-columns:minmax(220px,1.5fr) repeat(2,minmax(170px,1fr));align-items:end}.catalog-filters label:first-child{grid-template-columns:auto minmax(0,1fr);align-items:center}.catalog-filters label:first-child input{grid-column:1/-1}.product-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;display:grid}.product-card{border:1px solid var(--line);background:var(--surface);min-width:0;box-shadow:var(--shadow);border-radius:8px;grid-template-rows:auto 1fr;display:grid;overflow:hidden}.product-cover{aspect-ratio:16/10;object-fit:cover;background:var(--surface-strong);width:100%}.product-cover-placeholder{min-height:150px;color:var(--primary-strong);background:linear-gradient(135deg, #0f766e2e, #2563eb1f), var(--surface-strong);place-items:center;display:grid}.product-card-body{align-content:start;gap:14px;padding:16px;display:grid}.product-card-body h3,.product-detail h2,.purchase-panel h3,.purchase-library-item h3{margin:0}.product-card-body p,.purchase-library-item p{color:var(--muted);margin:6px 0 0}.product-card-heading,.product-meta,.owned-downloads,.purchase-download-actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.product-card-heading{justify-content:space-between}.owned-label{color:var(--green);align-items:center;gap:5px;font-size:.82rem;font-weight:800;display:inline-flex}.product-meta{color:var(--muted);justify-content:space-between;font-size:.88rem}.product-meta strong{color:var(--text)}.back-button{width:fit-content}.product-detail{grid-template-columns:minmax(220px,34%) minmax(0,1fr);align-items:start;gap:22px}.product-detail-cover{aspect-ratio:16/11;object-fit:cover;background:var(--surface-strong);border-radius:8px;width:100%}.product-detail-copy{gap:13px;min-width:0;display:grid}.product-detail-copy .lead{color:var(--text);font-size:1.03rem}.product-description{white-space:pre-wrap}.purchase-panel{gap:18px}.package-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.package-card{border:2px solid var(--line);min-height:180px;color:var(--text);background:var(--surface);text-align:left;border-radius:8px;align-content:start;justify-items:start;gap:7px;padding:15px;display:grid}.package-card:hover,.package-card.selected{border-color:var(--primary);background:var(--surface-strong)}.package-card.selected{box-shadow:0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent)}.package-card span{min-height:42px;color:var(--muted);font-size:.86rem}.package-card b{margin-top:auto}.package-card small{color:var(--green);align-items:center;gap:5px;font-weight:800;display:inline-flex}.package-card.owned,.package-card:disabled{cursor:default;opacity:.72}.payment-followup{max-width:760px}.purchase-library{gap:14px;display:grid}.purchase-library-item{grid-template-columns:150px minmax(0,1fr) auto;align-items:center;gap:16px}.purchase-library-item>img,.purchase-library-item>.product-cover-placeholder{object-fit:cover;border-radius:8px;width:150px;height:105px;min-height:105px}.purchase-library-item small{color:var(--muted);margin-top:9px;display:block}.purchase-download-actions{justify-content:flex-end}.project-admin-table{min-width:1120px}.support-page{max-width:980px}.support-chat{grid-template-rows:auto minmax(280px,1fr) auto auto;min-height:620px}.support-chat-header,.support-conversation-title,.support-message-meta{justify-content:space-between;align-items:center;gap:12px;display:flex}.support-chat-header>div{gap:2px;min-width:0;display:grid}.support-messages{border:1px solid var(--line);background:var(--surface-strong);overscroll-behavior:contain;border-radius:8px;flex-direction:column;gap:12px;min-height:280px;max-height:58vh;padding:16px;display:flex;overflow-y:auto}.support-message{border:1px solid var(--line);background:var(--surface);border-radius:8px;width:min(78%,680px);padding:12px 14px;box-shadow:0 8px 18px #212b360d}.support-message.student{color:#fff;border-color:var(--primary-strong);background:var(--primary-strong);align-self:flex-end}.support-message.ai{border-left:4px solid var(--blue)}.support-message.admin{border-left:4px solid var(--green)}.support-message.system{width:min(90%,760px);color:var(--muted);box-shadow:none;border-style:dashed;align-self:center}.support-message-meta{margin-bottom:5px;font-size:.78rem}.support-message-meta span{opacity:.74}.support-message p{white-space:pre-wrap;overflow-wrap:anywhere;margin:0}.support-composer{grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:10px;display:grid}.support-composer textarea{resize:vertical}.support-empty{min-height:220px;color:var(--muted);text-align:center;align-content:center;place-items:center;gap:8px;display:grid}.support-empty strong{color:var(--text)}.support-admin-layout{grid-template-columns:minmax(260px,340px) minmax(0,1fr);gap:16px;min-height:650px;display:grid}.support-conversation-list{align-content:start;max-height:74vh;overflow-y:auto}.support-conversation-item{width:100%;color:var(--text);border:1px solid var(--line);background:var(--surface);text-align:left;border-radius:8px;gap:5px;padding:12px;display:grid}.support-conversation-item:hover,.support-conversation-item.active{border-color:var(--primary);background:var(--surface-strong)}.support-conversation-item>span,.support-conversation-item small{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.support-conversation-item small{color:var(--muted)}.reader-screen{grid-template-rows:auto minmax(0,1fr);gap:14px;height:calc(100vh - 48px);min-height:560px;display:grid}.secure-reader,.secure-reader *{-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}.reader-toolbar{grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;display:grid}.reader-toolbar h1{font-size:1.2rem}.reader-frame{border:1px solid var(--line);background:#0b0f14;border-radius:8px;height:100%;min-height:0;position:relative;overflow:hidden}.protected-content{z-index:1;height:100%;min-height:0;position:relative}.reader-frame.is-shielded .protected-content{filter:blur(18px);opacity:0}.reader-shield{z-index:10;color:#fff;text-align:center;background:#041210f0;align-content:center;place-items:center;gap:8px;padding:24px;display:grid;position:absolute;inset:0}.reader-shield strong{font-size:1.15rem}.reader-shield span{color:#ffffffbd}.reader-document,.reader-media{object-fit:contain;border:0;width:100%;height:100%;min-height:0;display:block}.secure-pdf-viewer{z-index:1;overscroll-behavior:contain;touch-action:pan-y;-webkit-overflow-scrolling:touch;height:100%;min-height:0;padding:18px;position:relative;overflow:auto}.pdf-pages{justify-items:center;gap:18px;display:grid}.pdf-page{background:#fff;border-radius:8px;max-width:100%;overflow:hidden;box-shadow:0 10px 30px #00000047}.pdf-page canvas{max-width:100%;display:block}.secure-text-document{z-index:1;width:100%;height:100%;min-height:0;color:var(--text);background:var(--surface);white-space:pre-wrap;margin:0;padding:28px;font-family:inherit;line-height:1.7;position:relative;overflow:auto}.watermark-layer{pointer-events:none;z-index:6;opacity:.3;color:#0f766e;text-shadow:0 1px 2px #ffffff59;grid-template-columns:repeat(4,minmax(180px,1fr));align-content:center;gap:28px;font-weight:900;display:grid;position:absolute;inset:0;transform:rotate(-18deg)scale(1.1)}.watermark-layer span{white-space:nowrap}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;display:grid}.metric{gap:8px;padding:16px;display:grid}.metric span{width:38px;height:38px;color:var(--primary-strong);background:#0f766e1f;border-radius:8px;place-items:center;display:grid}.metric svg{width:20px;height:20px}.metric p{color:var(--muted);margin:0;font-weight:700}.metric strong{font-size:1.5rem}.department-admin-list{gap:10px;display:grid}.admin-list-item{grid-template-columns:minmax(0,1fr) auto auto auto}.department-list-name{font-weight:800}.row-actions{justify-content:flex-end;gap:8px;display:flex}.icon-button.danger{color:var(--rose);background:#be123c1a}.department-detail-grid{grid-template-columns:220px minmax(0,1fr);align-items:start;gap:16px;display:grid}.department-detail-grid img,.department-detail-placeholder{aspect-ratio:16/10;object-fit:cover;background:var(--surface-strong);border-radius:8px;width:100%}.department-detail-placeholder{color:var(--primary-strong);place-items:center;display:grid}.department-detail dl{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:14px 0 0;display:grid}.department-detail dt{color:var(--muted);text-transform:uppercase;font-size:.78rem;font-weight:800}.department-detail dd{margin:4px 0 0;font-weight:800}.table-wrap{border:1px solid var(--line);background:var(--surface);-webkit-overflow-scrolling:touch;border-radius:8px;overflow-x:auto}table{border-collapse:collapse;width:100%;min-width:720px}th,td{border-bottom:1px solid var(--line);text-align:left;vertical-align:middle;padding:13px 14px}th{color:var(--muted);text-transform:uppercase;letter-spacing:0;font-size:.82rem}td strong,td span{display:block}tr:last-child td{border-bottom:0}.muted{color:var(--muted);font-size:.88rem}.actions-cell{gap:8px;display:flex}.settings-layout{grid-template-columns:minmax(0,1fr) minmax(280px,420px);align-items:start;gap:18px;display:grid}.settings-form{align-items:start}.color-field{grid-template-columns:56px minmax(0,1fr);gap:8px;display:grid}.color-field input[type=color]{min-height:42px;padding:4px}.range-field{grid-template-columns:minmax(0,1fr) 54px;align-items:center;gap:10px;display:grid}.range-field input[type=range]{padding-inline:0}.range-field strong{border:1px solid var(--line);min-height:42px;color:var(--text);background:var(--surface);border-radius:8px;place-items:center;display:grid}.settings-preview{position:sticky;top:96px}.login-preview{border:1px solid var(--line);border-radius:8px;place-items:center;min-height:320px;padding:18px;display:grid;overflow:hidden}.login-preview-card{background:var(--surface);width:min(250px,100%);box-shadow:var(--shadow);text-align:center;border-radius:8px;justify-items:center;gap:8px;padding:18px;display:grid}.login-preview-card img{object-fit:cover;background:#000;border-radius:8px;width:72px;height:72px}.login-preview-card strong{font-size:1.08rem}.login-preview-card span{color:var(--muted);font-size:.85rem}.announcement-preview{border:1px solid var(--line);background:var(--surface-strong);border-radius:8px;align-items:center;min-height:38px;font-weight:800;display:flex;overflow:hidden}.announcement-preview span{white-space:nowrap;text-overflow:ellipsis;padding-inline:12px;overflow:hidden}.audit-table{min-width:980px}.metadata-cell{max-width:320px;color:var(--muted);white-space:nowrap;text-overflow:ellipsis;font-family:ui-monospace,SFMono-Regular,Consolas,Liberation 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