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.interactive-card:hover{transform:none;border-color:transparent;box-shadow:none;background:transparent}.scholar-sidebar-toggle{display:flex;align-items:center;justify-content:center;width:42px;height:42px;margin:0 auto 4px;border:0;border-radius:14px;background:transparent;color:#62748f;cursor:pointer;flex-shrink:0;transition:background .2s ease,color .2s ease}.scholar-sidebar-toggle:hover{background:rgba(15,143,137,.09);color:#0f8f89}.scholar-logout{display:inline-flex;align-items:center;gap:8px;padding:10px;border:0;border-radius:14px;background:transparent;color:#6f819a;font:inherit;font-weight:600;cursor:pointer;white-space:nowrap;overflow:hidden}.scholar-logout:hover{color:#ca5a0a;background:rgba(202,90,10,.08)}.sidebar-open .teacher-brand .scholar-brand-label,.sidebar-open .teacher-nav button span{opacity:1;transform:translateX(0)}.sidebar-open .teacher-sidebar .teacher-sidebar-card{opacity:1;pointer-events:auto}.sidebar-open .teacher-sidebar .scholar-logout span{opacity:1;transform:translateX(0)}.billing-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:16px;gap:16px}.billing-history-card{grid-column:1/-1}@media (max-width:720px){.billing-grid{grid-template-columns:minmax(0,1fr)}}.billing-badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:700;color:var(--muted);background:var(--field-bg);border:1px solid var(--field-border)}.billing-badge-pro{color:#ffffff;border-color:transparent;background:linear-gradient(135deg,var(--accent),var(--accent-strong))}.billing-plan-status{margin:12px 0 0;color:var(--muted);font-size:14px}.billing-cta{margin-top:18px;display:inline-flex;text-decoration:none}.billing-usage-count{margin:8px 0 0;font-size:15px;color:var(--ink)}.billing-usage-count strong{font-size:22px;font-weight:800;color:var(--accent-deep)}.billing-usage-bar{margin-top:12px;height:10px;border-radius:999px;background:color-mix(in srgb,var(--accent) 12%,#ffffff);overflow:hidden}.billing-usage-bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-strong));transition:width .3s ease}.billing-usage-meta{margin:10px 0 0;font-size:13px;color:var(--muted)}.billing-empty{margin:10px 0 0;color:var(--muted);font-size:14px}.billing-history-list{list-style:none;margin:12px 0 0;padding:0;display:grid;grid-gap:10px;gap:10px}.billing-history-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--field-bg)}.billing-history-main{display:grid;grid-gap:2px;gap:2px}.billing-history-main strong{font-size:14px;color:var(--ink);text-transform:capitalize}.billing-history-main span{font-size:12px;color:var(--muted)}.billing-history-amount{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink)}.billing-status{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;padding:3px 8px;border-radius:999px;color:var(--muted);background:var(--field-bg);border:1px solid var(--line)}.billing-status-success{color:#0a7d50;background:rgba(16,185,129,.12);border-color:rgba(16,185,129,.3)}.billing-status-pending{color:#b25e00;background:var(--accent-warm-soft);border-color:rgba(204,85,0,.3)}.billing-status-cancel,.billing-status-cancelled,.billing-status-failed{color:#b91c1c;background:rgba(239,68,68,.1);border-color:rgba(239,68,68,.3)}.revision-resource-link{position:relative;transition:transform .14s ease,border-color .14s ease}.revision-resource-link:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--accent) 45%,var(--line))}.revision-resource-open{display:inline-block;margin-top:8px;font-size:12.5px;font-weight:600;color:var(--accent)}.revision-resource-empty{color:var(--muted);font-size:13.5px;padding:10px 2px;margin:0}@media (max-width:768px){.scholar-shell{--m-topbar:58px;--m-bottomnav:60px}.scholar-sidebar{position:fixed;inset:0 0 auto 0;width:100%;height:auto;display:block;padding:env(safe-area-inset-top) 14px 0;border-right:0;border-bottom:1px solid rgba(174,189,211,.24);overflow:visible;z-index:60}.scholar-sidebar:hover{width:100%;box-shadow:none}.scholar-desktop-only,.scholar-sidebar-footer{display:none!important}.scholar-mobile-topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;min-width:0;min-height:var(--m-topbar)}.scholar-mobile-logo{display:block}.scholar-sidebar-mobile-meta{display:flex;position:relative;align-items:center;gap:6px}.scholar-main{margin-left:0;padding-top:calc(var(--m-topbar) + env(safe-area-inset-top));padding-bottom:calc(var(--m-bottomnav) + env(safe-area-inset-bottom))}.scholar-content{padding:18px 16px 24px}.scholar-panel-stack>*,.ui-select{min-width:0}.ui-select .ui-select-value{white-space:normal;overflow-wrap:anywhere;text-overflow:clip;line-height:1.25}.ui-select-trigger{min-height:52px;height:auto;padding-top:8px;padding-bottom:8px}.scholar-footer{display:none}.scholar-mobile-bottom-nav{display:flex;position:fixed;inset:auto 0 0 0;align-items:stretch;justify-content:space-around;gap:2px;height:calc(var(--m-bottomnav) + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:rgba(255,255,255,.96);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-top:1px solid rgba(174,189,211,.24);z-index:60}.scholar-mobile-tab{flex:1 1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;min-width:0;min-height:44px;padding:6px 2px;color:#8090a6;font:inherit;cursor:pointer}.scholar-mobile-tab svg{flex-shrink:0}.scholar-mobile-tab span{max-width:100%;overflow:hidden;font-size:.62rem;font-weight:600;line-height:1;text-overflow:ellipsis;white-space:nowrap}.scholar-mobile-tab-active{color:#0f8f89}.scholar-mobile-tab:active{background:rgba(15,143,137,.06)}.native-android .scholar-mobile-bottom-nav{height:var(--m-bottomnav);padding-bottom:0}.native-android .scholar-main{padding-bottom:var(--m-bottomnav)}.chat-shell{padding:16px;gap:16px}.chat-intro{padding:4px 4px 0}.chat-intro h2{font-size:1.5rem}.chat-bubble{max-width:100%;padding:14px 16px}.chat-input-shell{padding:14px}.chat-input-footer{flex-direction:column;align-items:stretch;gap:12px}.chat-input-footer .scholar-primary-button{width:100%;min-height:48px}.practice-option{min-height:48px}.feedback-main-card,.feedback-side-card{overflow-wrap:anywhere}.settings-nav-card{display:flex;flex-wrap:wrap;grid-auto-flow:row;justify-content:center;gap:8px;overflow:visible}.settings-nav-card button{flex:0 0 auto;white-space:nowrap;padding:12px 16px;min-height:44px}.settings-nav-active{box-shadow:inset 0 -3px 0 #cc5500}.settings-actions{flex-direction:column;align-items:stretch}.settings-actions button{width:100%;min-height:48px}.billing-cta{width:100%;justify-content:center}.keyboard-open .scholar-mobile-bottom-nav{display:none}.keyboard-open .scholar-main{padding-bottom:0}}