:root{--navy:#17243b;--navy2:#213451;--blue:#1769aa;--blue2:#eaf4fb;--ink:#172033;--muted:#697386;--line:#dfe6ee;--bg:#f4f7fa;--surface:#fff;--surface-alt:#f0f4f8;--field:#fff;--sidebar:#fff;--danger:#b42318;--shadow:0 10px 32px rgba(25,48,73,.08);color-scheme:light}
[data-theme="sepia"]{--navy:#45382b;--navy2:#665340;--blue:#7a4f27;--blue2:#eee0c7;--ink:#3f352c;--muted:#756657;--line:#d2bea0;--bg:#e9dcc4;--surface:#f6ecd8;--surface-alt:#eadbc1;--field:#fff8e9;--sidebar:#f1e4cd;--danger:#a63d32;--shadow:0 10px 28px rgba(76,52,30,.12);color-scheme:light}
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.topbar{position:fixed;z-index:20;inset:0 0 auto;height:4.75rem;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 1.5rem;gap:1rem}.brand{display:flex;align-items:center;gap:.75rem;color:var(--navy);font-weight:800;white-space:nowrap}.brand:hover{text-decoration:none}.brand-logo{display:block;width:3.1rem;height:3.1rem;object-fit:contain}.divider{height:2.2rem;border-left:1px solid var(--line)}.client-logo{display:block;max-width:7.5rem;max-height:2.6rem;object-fit:contain}.client-name{font-weight:700}.user-menu{margin-left:auto;position:relative}.user-button{border:0;background:transparent;display:flex;align-items:center;gap:.55rem}.user-icon{display:grid;place-items:center;width:2rem;height:2rem;border-radius:50%;background:var(--blue2);color:var(--blue);font-size:.65rem}.dropdown{display:none;position:absolute;right:0;top:calc(100% + .4rem);width:11rem;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:.65rem;padding:.4rem}.user-menu.open .dropdown{display:grid}.dropdown a{padding:.65rem;color:var(--ink)}
.layout{display:grid;grid-template-columns:17.5rem minmax(0,1fr);min-height:100vh;padding-top:4.75rem}.sidebar{position:fixed;top:4.75rem;bottom:0;left:0;width:17.5rem;background:linear-gradient(180deg,var(--navy),var(--navy2));padding:1.35rem .85rem;display:flex;flex-direction:column;overflow-y:auto}.sidebar nav{display:grid;gap:.28rem}.sidebar a{color:#dce7f4;padding:.72rem .85rem;border-radius:.52rem}.sidebar a:hover,.sidebar a.active{background:rgba(255,255,255,.13);color:#fff;text-decoration:none}.sidebar a.active{box-shadow:inset 3px 0 #6fc3ff}.ask-link{margin-top:auto!important;border:1px solid rgba(255,255,255,.25)}.content{grid-column:2;padding:2.25rem clamp(1.2rem,3vw,3rem);max-width:92rem;width:100%}
.page-head{margin-bottom:1.65rem}.page-head h1{margin:.1rem 0;font-size:clamp(1.85rem,3vw,2.55rem);line-height:1.15}.page-head p,.card-meta,.hint{color:var(--muted)}.eyebrow{text-transform:uppercase;letter-spacing:.075em;font-size:1rem;font-weight:600;line-height:1.4;margin:0 0 .45rem;color:var(--blue)!important}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(19rem,100%),1fr));gap:1.15rem}.card,.panel{background:#fff;border:1px solid var(--line);border-radius:.85rem;padding:1.3rem;box-shadow:var(--shadow)}.card{transition:transform .15s,border-color .15s}.card:hover{transform:translateY(-2px);border-color:#bfd4e5}.card h2{font-size:1.12rem;margin:.5rem 0}.stats .card{display:grid}.stats strong{font-size:2rem}.badge{display:inline-block;margin-left:.5rem;padding:.08rem .48rem;background:var(--blue2);color:var(--blue);border-radius:99px;font-weight:750;font-size:.75rem}
.lesson{max-width:68rem}.prose{background:#fff;border:1px solid var(--line);border-radius:.85rem;padding:clamp(1.25rem,4vw,2.7rem);box-shadow:var(--shadow)}.prose h2{margin-top:2rem;color:var(--navy)}.prose img{max-width:100%;height:auto}.prose iframe,.video-frame{display:block;width:100%;aspect-ratio:16/9;height:auto;border:0;border-radius:.65rem;margin:1.4rem 0;background:#101820}.prose p,.prose li{max-width:75ch}.narrow{max-width:40rem}.stack{display:grid;gap:1rem}label{display:grid;gap:.35rem;font-weight:650}input,textarea,select{width:100%;min-width:0;border:1px solid #bac6d4;border-radius:.5rem;padding:.72rem;background:#fff;color:var(--ink)}textarea{resize:vertical}.password-wrap{display:flex}.password-wrap input{border-radius:.5rem 0 0 .5rem}.password-wrap button{border-radius:0 .5rem .5rem 0}.check{display:flex;grid-auto-flow:column;justify-content:start;align-items:center;font-weight:400}.check input{width:auto}.alert{padding:.85rem 1rem;border-radius:.55rem;margin-bottom:1rem;background:#eef4f9}.alert.error{background:#fff0ef;color:#8f1d15}.alert.success{background:#eaf8f1;color:#0d633d}.alert.warning{background:#fff7e6;color:#7d5100}
.login-body{min-height:100vh;display:grid;place-items:center;padding:1rem;background:radial-gradient(circle at 20% 10%,#e5f2fb,transparent 38%),linear-gradient(135deg,#eef4f8,#f8fafc)}.login-card{width:min(28rem,100%);background:#fff;padding:2.15rem;border:1px solid var(--line);border-radius:1rem;box-shadow:0 18px 55px rgba(25,48,73,.13)}.login-card form{display:grid;gap:1rem}.login-brand{display:flex;align-items:center;gap:1rem}.login-logo{width:4.25rem;height:4.25rem;object-fit:contain}.login-brand h1{font-size:1.55rem}.admin-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(22rem,.8fr);gap:1.5rem}.section-title{display:flex;justify-content:space-between;align-items:center}.table-wrap{overflow:auto;background:#fff;border:1px solid var(--line);border-radius:.7rem}table{border-collapse:collapse;width:100%;min-width:38rem}th,td{text-align:left;padding:.78rem;border-bottom:1px solid var(--line);vertical-align:top}th{background:#f0f4f8}.editor-tabs,.editor-toolbar{display:flex;flex-wrap:wrap;gap:.35rem}.editor-tabs .active{background:var(--navy);color:#fff}.wysiwyg,.source-editor{min-height:18rem;border:1px solid #bac6d4;background:#fff;border-radius:.5rem;padding:1rem;font-weight:400;overflow:auto}.message-list{display:grid;gap:1rem;max-width:55rem}.preserve{white-space:pre-wrap}.menu-toggle{display:none;font-size:1.2rem;padding:.35rem .55rem}
@media(max-width:800px){.topbar{height:4.25rem;padding:0 .7rem;gap:.55rem}.menu-toggle{display:block}.brand-logo{width:2.55rem;height:2.55rem}.brand span{display:none}.divider{display:none}.client-logo{max-width:4.5rem;max-height:2rem}.client-name{font-size:.88rem;max-width:7rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.user-name{display:none}.layout{display:block;padding-top:4.25rem}.sidebar{z-index:19;top:4.25rem;width:min(18rem,86vw);transform:translateX(-105%);transition:transform .2s;box-shadow:var(--shadow)}.menu-open .sidebar{transform:translateX(0)}.content{padding:1.25rem .9rem}.admin-grid{grid-template-columns:1fr}.prose{padding:1.15rem}.section-title{align-items:flex-start;gap:.5rem}.user-menu .dropdown{position:fixed;right:.5rem;top:3.8rem}.table-wrap{max-width:calc(100vw - 1.8rem)}}
@media(max-width:420px){.client-name{max-width:5rem}.cards{grid-template-columns:1fr}.login-card{padding:1.35rem}.brand-logo{width:2.35rem}.topbar{gap:.4rem}.user-button{padding:.45rem}}
@media print{.topbar,.sidebar{display:none}.layout{display:block;padding:0}.content{padding:0}.prose{box-shadow:none;border:0}}

/* v0.3 client UX — aligned to the approved light portal baseline */
.topbar{height:5rem;padding:0 2rem}.brand-logo{width:auto;height:auto;max-width:4.4rem;max-height:2.9rem;object-fit:contain;flex:none}.layout{grid-template-columns:18rem minmax(0,1fr);padding-top:5rem}.sidebar{top:5rem;width:18rem;background:#fff;border-right:1px solid var(--line);padding:1.5rem 1rem}.sidebar a{color:#263247;font-weight:600}.sidebar a:hover,.sidebar a.active{background:#eaf3ff;color:#0759c7}.sidebar a.active{box-shadow:inset 3px 0 #1671e8}.ask-link{border:0!important;color:#0759c7!important}.content{padding:2.5rem clamp(1.5rem,4vw,4.5rem);max-width:100%}.welcome{padding:1.1rem 0}.dashboard-section{max-width:68rem;margin:0 0 2.4rem}.dashboard-section h2{font-size:1.15rem}.news-list{display:grid;gap:.85rem;max-width:68rem}.list-card{background:#fff;border:1px solid var(--line);border-radius:.8rem;padding:1.15rem 1.3rem;box-shadow:0 3px 12px rgba(25,48,73,.05)}.list-card time{color:var(--muted);font-size:.88rem}.list-card h2,.list-card h3{margin:.25rem 0}.list-card p{margin:.3rem 0;color:var(--muted)}.card-icon{display:grid;place-items:center;width:2.45rem;height:2.45rem;border-radius:50%;background:#e8f2ff;color:#0759c7;font-weight:800}.empty{padding:1rem;color:var(--muted);background:#fff;border:1px dashed var(--line);border-radius:.7rem}.answer{margin-top:1rem;padding:1rem;border-left:3px solid #1671e8;background:#f1f7ff;border-radius:.45rem}.wide{max-width:75rem}.actions{display:flex;gap:.7rem;align-items:center;flex-wrap:wrap}.editor-panel{max-width:none}.editor-panel form{width:100%}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.checks{display:flex;gap:1.5rem}.wysiwyg,.source-editor{min-height:65vh;width:100%;font-size:1rem;line-height:1.65}.editor-toolbar{position:sticky;top:5.2rem;z-index:5;background:#fff;padding:.5rem 0}.lesson{max-width:76rem}.prose{box-shadow:none}.content>.section-title{margin-bottom:1.2rem}
@media(max-width:800px){.topbar{height:4.25rem;padding:0 .7rem}.brand-logo{max-width:3rem;max-height:2.2rem}.layout{padding-top:4.25rem}.sidebar{top:4.25rem;width:min(18rem,86vw)}.content{padding:1.25rem .9rem}.form-grid{grid-template-columns:1fr}.wysiwyg,.source-editor{min-height:72vh}.editor-toolbar{top:4.4rem}}

/* v0.3.1 shared theme surfaces and avatars */
.topbar,.dropdown,.card,.panel,.prose,.list-card,.table-wrap,.login-card,.empty,.editor-toolbar{background:var(--surface)}
.sidebar{background:var(--sidebar)}
.sidebar a{color:var(--ink)}
.sidebar a:hover,.sidebar a.active{background:var(--blue2);color:var(--blue)}
input,textarea,select,.wysiwyg,.source-editor{background:var(--field);color:var(--ink);border-color:var(--line)}
th{background:var(--surface-alt)}
.answer{background:var(--blue2)}
.login-body{background:var(--bg)}
.dropdown a{color:var(--ink)}
.user-avatar,.profile-avatar-image{display:grid;place-items:center;border-radius:50%;object-fit:cover;background:var(--blue2);color:var(--blue);overflow:hidden;flex:none}
.user-avatar{width:2rem;height:2rem}.profile-avatar-image{width:6rem;height:6rem}
.avatar-placeholder svg{width:72%;height:72%;fill:currentColor}.profile-avatar{margin:0 0 1.2rem}.delete-form{margin-top:1rem}
.avatar-male{background:#dbeaf6;color:#2c628d}.avatar-female{background:#f2dfe8;color:#92506d}.version-label{display:block;margin:.8rem .85rem .2rem;color:var(--muted);font-size:.78rem}
.update-summary{display:grid;gap:.55rem}.update-summary dt{font-weight:700}.update-summary dd{margin:0 0 .5rem}.file-list{max-height:18rem;overflow:auto;background:var(--surface-alt);padding:1rem;border-radius:.5rem}
.language-tabs{display:flex;gap:.45rem;border-bottom:1px solid var(--line);margin:1rem 0}.language-tabs button{border:0;border-bottom:3px solid transparent;background:transparent;color:var(--muted);padding:.7rem 1rem;font-weight:700}.language-tabs button.active{border-color:var(--blue);color:var(--blue)}.translation-pane{display:grid;gap:1rem}.translation-pane[hidden]{display:none}
.stat-link{color:var(--ink);text-decoration:none}.stat-link:hover{text-decoration:none}
.admin-nav{display:flex!important;flex-direction:column;align-items:stretch;min-height:100%}.admin-nav .nav-child{margin-left:.8rem;padding-left:1.05rem;font-size:.95rem}.nav-separator{display:block;height:1px;flex:0 0 1px;background:var(--line);margin:1rem .85rem}.admin-nav .version-label{margin-top:auto}.hub-card{display:grid;gap:.35rem;color:var(--ink);min-height:8rem;align-content:center}.hub-card:hover{text-decoration:none}.settings-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(26rem,100%),1fr));gap:1.4rem}.masked-secret{font-family:monospace;letter-spacing:.12em}
.admin-nav{gap:.18rem!important}.admin-nav>a{padding:.58rem .78rem}.admin-nav>a:first-child{display:flex;align-items:center;gap:.48rem}.admin-nav>a:first-child::before{content:"⌂";display:inline-grid;place-items:center;width:1.05rem;color:currentColor;font-size:1rem;line-height:1}.admin-nav .nav-child{margin-left:.38rem;padding-left:1rem}.admin-nav .nav-separator{margin:.72rem .78rem}
.thread-list,.conversation,.content-admin-list{display:grid;gap:.8rem;max-width:76rem}.thread-card,.content-admin-row{display:block;background:var(--surface);border:1px solid var(--line);border-radius:.75rem;padding:1rem 1.15rem;color:var(--ink);box-shadow:0 3px 12px rgba(25,48,73,.05)}.thread-card:hover{text-decoration:none;border-color:var(--blue)}.thread-card h2,.content-admin-row h2{font-size:1.08rem;margin:.35rem 0}.thread-meta{display:flex;flex-wrap:wrap;gap:.35rem 1rem;color:var(--muted);font-size:.9rem}.status-waiting{background:#fff1cf;color:#795400}.status-answered{background:#e4f5ec;color:#14643d}.status-closed{background:var(--surface-alt);color:var(--muted)}.thread-filters{display:grid;grid-template-columns:repeat(4,minmax(9rem,1fr)) auto;gap:.65rem;align-items:end;margin:0 0 1rem;max-width:76rem}.filters-toggle{display:none}.thread-view{width:100%;max-width:76rem}.thread-header{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem}.thread-header h1{margin:.4rem 0 1rem}.thread-details{display:flex;flex-wrap:wrap;gap:.7rem 1.5rem;background:var(--surface-alt);padding:1rem;border-radius:.65rem}.thread-details div{min-width:11rem}.thread-details dt{font-weight:700}.thread-details dd{margin:0}.conversation-message{max-width:64rem;border-left:4px solid var(--line);background:var(--surface);padding:1rem 1.2rem;border-radius:.5rem}.conversation-message.author-admin{border-color:var(--blue);margin-left:clamp(0rem,4vw,3rem)}.conversation-author{font-weight:700;color:var(--muted);font-size:.9rem}.thread-compose{margin-top:1rem;max-width:64rem}.thread-actions,.content-actions{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem}.edit-answer{margin-top:.65rem}.content-filter{display:flex;align-items:end;gap:.6rem;margin:0 0 1rem}.content-admin-row{display:flex;align-items:center;justify-content:space-between;gap:1rem}.content-admin-main{min-width:0}.content-actions{margin:0;flex:none}.content-actions .button{padding:.42rem .62rem;font-size:.88rem}.pagination{display:flex;flex-wrap:wrap;gap:.35rem;margin-top:1rem}.pagination a{display:grid;place-items:center;min-width:2.5rem;min-height:2.5rem;border:1px solid var(--line);border-radius:.4rem}.pagination a.active{background:var(--blue);color:#fff}
@media(max-width:800px){.thread-filters{display:none;grid-template-columns:1fr}.thread-filters.open{display:grid}.filters-toggle{display:inline-block}.thread-header,.content-admin-row{align-items:flex-start;flex-direction:column}.content-actions{width:100%}.content-actions .button{flex:1 1 auto;text-align:center}.thread-details{display:grid}.conversation-message.author-admin{margin-left:0}.thread-compose textarea{min-height:8rem}.thread-actions button,.thread-compose button{min-height:2.75rem}.thread-meta{display:grid;gap:.2rem}.content-filter{align-items:stretch;flex-direction:column}}