:root{
            --bg:#f6f8fb;--surface:#ffffff;--surface-soft:#eef6ff;--text:#111827;--muted:#667085;
            --line:#d9e2ec;--primary:#2563eb;--primary-strong:#1d4ed8;--accent:#14b8a6;
            --success:#16a34a;--warning:#f59e0b;--danger:#dc2626;--violet:#7c3aed;
            --shadow:0 8px 24px rgba(15,23,42,.08);--shadow-soft:0 2px 10px rgba(15,23,42,.06);
            --radius:8px;--radius-sm:6px;--focus:0 0 0 3px rgba(37,99,235,.18);
        }
        *{margin:0;padding:0;box-sizing:border-box}
        html{scroll-behavior:smooth}
        body{font-family:Inter,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.55;font-size:16px;text-rendering:optimizeLegibility}
        a{color:inherit}.header{background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);padding:10px 24px;display:flex;justify-content:space-between;align-items:center;gap:16px;position:sticky;top:0;z-index:1000;box-shadow:0 1px 0 rgba(15,23,42,.03)}
        .logo{font-size:1.08rem;font-weight:800;color:var(--text);text-decoration:none;display:flex;align-items:center;gap:10px;white-space:nowrap}.logo i{width:36px;height:36px;border-radius:var(--radius);display:inline-flex;align-items:center;justify-content:center;background:#e8f1ff;color:var(--primary)}
        .nav-buttons{display:flex;align-items:center;justify-content:flex-end;gap:6px;flex-wrap:wrap;overflow:visible;max-width:100%;padding:2px 0;scrollbar-width:thin}.nav-buttons>span{display:inline-flex;align-items:center;gap:8px;min-height:38px;padding:7px 10px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;color:var(--muted);font-weight:600;white-space:nowrap}.notification-center{position:relative;display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;flex:0 0 auto}.notification-badge{position:absolute;top:-6px;right:-6px;background:var(--danger);color:#fff;border-radius:999px;min-width:19px;height:19px;padding:0 5px;font-size:11px;display:flex;align-items:center;justify-content:center;border:2px solid #fff}
        .nav-btn{background:#fff!important;color:#344054!important;padding:8px 11px;border-radius:var(--radius);text-decoration:none;font-weight:700;font-size:.84rem;transition:.16s;display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);cursor:pointer;min-height:38px;box-shadow:none!important;white-space:nowrap;flex:0 0 auto}.nav-btn:hover,.nav-btn.active{background:#eef6ff!important;color:var(--primary)!important;border-color:#bcd7ff;transform:none!important}.nav-btn.active{box-shadow:inset 0 -2px 0 var(--primary)!important}.logout-btn{background:#fff1f2!important;color:#be123c!important;border-color:#fecdd3!important}.nav-more{position:relative;flex:0 0 auto}.nav-more summary{list-style:none}.nav-more summary::-webkit-details-marker{display:none}.nav-menu{position:absolute;right:0;top:calc(100% + 8px);min-width:220px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:6px;display:grid;gap:2px;z-index:1200}.nav-menu-item{display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:var(--radius-sm);text-decoration:none;color:#344054;font-weight:700;font-size:.86rem;white-space:nowrap}.nav-menu-item:hover,.nav-menu-item.active{background:#eef6ff;color:var(--primary)}
        .container{max-width:1280px;margin:0 auto;padding:24px}.card{background:var(--surface);padding:22px;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-soft);margin-bottom:18px}.card h2{font-size:1.32rem;line-height:1.25;margin-bottom:16px;display:flex;align-items:center;gap:10px}.card h3{font-size:1.08rem;margin-bottom:12px}.hero{background:#0f172a;color:#fff;border-radius:var(--radius);padding:48px 36px;margin-bottom:22px;box-shadow:var(--shadow);position:relative;overflow:hidden}.hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 78% 16%,rgba(20,184,166,.24),transparent 32%),linear-gradient(135deg,rgba(37,99,235,.38),transparent 55%);pointer-events:none}.hero>*{position:relative}.hero h1{font-size:clamp(2rem,4vw,3.1rem);letter-spacing:0;margin-bottom:12px}.hero p{color:#dbeafe;max-width:780px;margin:0 auto 22px}.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-align:left;transition:.16s;content-visibility:auto;contain-intrinsic-size:220px}.feature-card:hover,.profile-card:hover,.group-card:hover{border-color:#bcd7ff;box-shadow:var(--shadow-soft);transform:none}.feature-card i{font-size:1.45rem;color:var(--primary);margin-bottom:12px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.profile-card,.group-card{background:#fff;padding:18px;border:1px solid var(--line);border-radius:var(--radius);box-shadow:none;transition:.16s;position:relative;content-visibility:auto;contain-intrinsic-size:260px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin:16px 0}.stat-card{background:#fff;color:var(--text);padding:18px;border-radius:var(--radius);border:1px solid var(--line);box-shadow:var(--shadow-soft);text-align:left}.stat-card h3{font-size:1.8rem;margin-bottom:4px;color:var(--primary)}.stat-card p{color:var(--muted);font-weight:600}
        .btn,.btn-small,a.btn,a.btn-small,button.btn,button.btn-small{background:var(--primary);color:#fff!important;padding:10px 16px;border:1px solid transparent;border-radius:var(--radius);cursor:pointer;font-size:.92rem;font-weight:750;text-decoration:none!important;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.16s;min-height:42px;box-shadow:none}.btn:hover,.btn-small:hover{background:var(--primary-strong);transform:none;box-shadow:var(--shadow-soft)}.btn-small{padding:7px 11px;font-size:.82rem;min-height:34px}.btn-gray{background:#475467!important}.btn-purple{background:var(--violet)!important}.btn-green{background:var(--success)!important}.btn-red{background:var(--danger)!important}.btn-orange{background:var(--warning)!important;color:#111827!important}.action-buttons{display:flex;gap:8px;flex-wrap:wrap}.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}.filter-select{padding:10px 12px;border-radius:var(--radius);border:1px solid var(--line);min-height:42px;background:#fff}.form-group{margin-bottom:16px}.form-group label{display:block;margin-bottom:7px;font-weight:700;font-size:.92rem;color:#344054}.form-group input,.form-group select,.form-group textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:var(--radius);font-size:.96rem;background:#fff;color:var(--text)}.form-group input:focus,.form-group select:focus,.form-group textarea:focus,.answer-input:focus,.answer-textarea:focus{outline:none;border-color:var(--primary);box-shadow:var(--focus)}.answer-input,.answer-textarea{width:100%;min-height:130px!important;padding:14px;border:1px solid var(--line);border-radius:var(--radius);font-size:1rem!important;line-height:1.55;font-family:inherit;resize:vertical;background:#fff}
        .table-container{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}.table{width:100%;border-collapse:collapse;min-width:680px}.table th,.table td{padding:12px;text-align:left;border-bottom:1px solid #edf2f7;vertical-align:middle}.table th{background:#f8fafc;font-weight:800;color:#344054;font-size:.86rem}.table tr:hover td{background:#fbfdff}.status{padding:5px 9px;border-radius:999px;font-size:.74rem;font-weight:800;display:inline-flex;align-items:center;gap:5px;color:#fff}.status-correct,.status-success{background:var(--success)}.status-pending,.status-warning{background:var(--warning);color:#111827}.status-online{background:var(--success)}.status-offline{background:#98a2b3}.status-banned,.status-error{background:var(--danger)}.profile-badge{display:inline-flex;align-items:center;background:#edf7ff;color:#075985;padding:5px 9px;border:1px solid #cfe8ff;border-radius:999px;font-size:.74rem;font-weight:750;margin-right:6px;margin-bottom:6px}.flash{padding:12px 14px;border-radius:var(--radius);margin-bottom:16px;display:flex;align-items:center;gap:10px;border:1px solid}.flash-success{background:#ecfdf3;color:#05603a;border-color:#abefc6}.flash-error{background:#fff1f3;color:#912018;border-color:#fecdd3}.timer{font-size:1.2rem;font-weight:800;color:var(--primary);text-align:center;padding:12px;background:#eef6ff;border:1px solid #cfe8ff;border-radius:var(--radius);margin-bottom:16px}.multi-select-container,.picker-list{max-height:300px;overflow-y:auto;border:1px solid var(--line);border-radius:var(--radius);padding:8px;background:#fff}.multi-select-item,.picker-item{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;padding:10px;border-radius:var(--radius-sm);transition:.16s}.picker-item{justify-content:flex-start;cursor:pointer}.picker-item input{width:auto!important;margin-top:4px}.picker-item:hover,.multi-select-item:hover{background:#f8fafc}.picker-search{margin-bottom:8px}.picker-meta{display:block;color:#667085;font-size:.78rem;margin-top:2px}.choice-list{display:grid;gap:10px;margin-top:10px}.choice-option{display:flex;gap:10px;align-items:flex-start;border:1px solid var(--line);border-radius:var(--radius);padding:12px;background:#fff;cursor:pointer}.choice-option:hover{border-color:#bcd7ff;background:#f8fbff}.choice-option input{width:auto!important;margin-top:4px}.test-mode-fields[hidden]{display:none!important}.modal{display:none;position:fixed;inset:0;background:rgba(15,23,42,.55);z-index:2000;justify-content:center;align-items:center;padding:16px}.modal.show{display:flex!important}.modal-content{background:#fff;max-width:95%;width:650px;border-radius:var(--radius);padding:22px;max-height:86vh;overflow-y:auto;box-shadow:var(--shadow)}.notification-overlay{position:fixed;inset:0;background:rgba(15,23,42,.55);z-index:2000;display:none;justify-content:center;align-items:flex-start;padding:16px}.notification-overlay.show{display:flex!important}.notification-panel{background:#fff;border-radius:var(--radius);width:100%;max-width:520px;max-height:82vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:var(--shadow)}.notification-header{padding:16px 18px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.notification-body{flex:1;overflow-y:auto;padding:8px}.notification-item{padding:13px;border-bottom:1px solid #edf2f7;cursor:pointer;border-radius:var(--radius-sm);transition:.16s}.notification-item.unread{background:#eef6ff;border-left:3px solid var(--primary)}.notification-item:hover{background:#f8fafc}.avatar{width:38px;height:38px;border-radius:50%;object-fit:cover}.avatar-large{width:96px;height:96px;border-radius:50%;object-fit:cover}details summary{cursor:pointer;font-weight:800;padding:10px 0;color:var(--primary);font-size:.98rem;min-height:42px}.online-counter{background:#ecfdf3;color:#05603a;border:1px solid #abefc6;padding:5px 10px;border-radius:999px;font-size:.8rem;display:inline-flex;align-items:center;gap:6px}.question-item{background:#fff;border-radius:var(--radius);padding:18px;margin-bottom:14px;border:1px solid var(--line);content-visibility:auto;contain-intrinsic-size:220px}.question-item.unanswered{border-left:4px solid var(--warning)}.question-item.answered{border-left:4px solid var(--success)}.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:20px;align-items:stretch}.pricing-card{background:#fff;border-radius:var(--radius);padding:20px;box-shadow:none;border:1px solid var(--line);display:flex;flex-direction:column;min-width:0}.pricing-card.featured{border-color:var(--primary);box-shadow:0 0 0 1px #2563eb}.pricing-card.current{background:#f8fbff}.pricing-title{font-size:1.18rem;font-weight:800;margin-bottom:8px}.pricing-badge-row{min-height:30px}.pricing-price{font-size:1.8rem;font-weight:850;margin-bottom:12px;color:var(--primary);min-height:48px;display:flex;align-items:center}.pricing-description{min-height:48px;color:var(--muted)}.pricing-list{list-style:none;margin:0 0 16px;padding:0;flex:1}.pricing-list li{display:flex;gap:8px;align-items:flex-start;margin-bottom:8px;color:#344054}.pricing-actions{margin-top:auto;display:grid;gap:10px}.pricing-actions>.btn{width:100%}.pricing-note{min-height:42px;display:flex;align-items:center;color:var(--muted);font-weight:700}.payment-form{display:grid;gap:10px}.payment-email-label{display:grid;gap:6px;font-size:.84rem;font-weight:750;color:#344054}.payment-email-label input{width:100%;min-height:42px;padding:9px 11px;border:1px solid var(--line);border-radius:var(--radius);font:inherit}.offer-consent{display:flex;align-items:flex-start;gap:8px;color:#475467;font-size:.78rem;line-height:1.4}.offer-consent input{width:auto;margin-top:2px}.payment-form .btn{width:100%}pre{white-space:pre-wrap;background:#f8fafc;padding:14px;border-radius:var(--radius);font-size:.92rem;border:1px solid #edf2f7}.answer-correct{border-left:4px solid var(--success);padding:14px;background:#ecfdf3;border-radius:var(--radius);margin:12px 0}.answer-incorrect{border-left:4px solid var(--danger);padding:14px;background:#fff1f3;border-radius:var(--radius);margin:12px 0}.pagination{display:flex;justify-content:center;align-items:center;gap:10px;margin-top:20px;flex-wrap:wrap}.empty-state{text-align:center;padding:44px 20px;color:var(--muted)}.empty-state i{font-size:3rem;opacity:.25;margin-bottom:16px;display:block}.empty-state h3{margin-bottom:8px;color:#475467}.empty-state p{color:var(--muted);margin-bottom:18px}
        @media(max-width:1024px){.container{padding:20px}.header{align-items:flex-start;flex-direction:column}.nav-buttons{justify-content:flex-start;width:100%}}
        @media(max-width:768px){body{font-size:15px}.container{padding:14px}.card{padding:16px}.hero{padding:32px 20px}.hero h1{font-size:1.8rem}.grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.header{padding:10px 12px}.table th,.table td{font-size:14px}.btn,.btn-small,.nav-btn{min-height:40px}.nav-buttons{padding-bottom:6px}}
        @media(max-width:480px){.stats-grid{grid-template-columns:1fr}.action-buttons{flex-direction:column}.btn,.btn-small{width:100%}.nav-btn{font-size:.8rem}.logo{font-size:1rem}}

        .hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,46%);gap:28px;align-items:center;background:linear-gradient(135deg,#111827,#2f3642);min-height:430px}.hero h1,.hero p,.hero a{position:relative;z-index:2}.hero-copy{max-width:680px}.hero-visual{position:relative;min-height:330px;border-radius:12px;overflow:hidden;box-shadow:0 28px 70px rgba(0,0,0,.35);transform:perspective(1200px) rotateY(-8deg) rotateX(2deg);animation:floatVisual 7s ease-in-out infinite}.hero-visual img{width:100%;height:100%;object-fit:cover;display:block;filter:saturate(.9) contrast(1.05)}.hero-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(145deg,rgba(255,255,255,.16),transparent 35%,rgba(15,23,42,.28));pointer-events:none}.hero-kpis{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0}.hero-kpis span{display:inline-flex;align-items:center;gap:8px;padding:8px 11px;border:1px solid rgba(255,255,255,.18);border-radius:999px;background:rgba(255,255,255,.08);color:#f8fafc;font-weight:750;font-size:.86rem;backdrop-filter:blur(8px)}
        .page-intro{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(260px,.7fr);gap:16px;align-items:stretch;margin-bottom:16px}.glass-panel{background:linear-gradient(135deg,rgba(255,255,255,.92),rgba(248,250,252,.82));border:1px solid rgba(148,163,184,.35);border-radius:12px;box-shadow:var(--shadow-soft);padding:20px;position:relative;overflow:hidden}.glass-panel:before{content:"";position:absolute;inset:auto -20% -65% auto;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(37,99,235,.16),transparent 68%);pointer-events:none}.insight-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-top:12px}.insight-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px;transition:.18s;animation:fadeUp .45s ease both}.insight-card:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(15,23,42,.08)}.insight-card strong{display:block;font-size:1.35rem;color:#111827}.insight-card span{color:var(--muted);font-weight:650;font-size:.86rem}.progress-track{height:9px;background:#e5e7eb;border-radius:999px;overflow:hidden;margin-top:8px}.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#4b5563,#2563eb,#14b8a6);transform-origin:left;animation:growBar .85s ease both}.bar-list{display:grid;gap:10px;margin-top:10px}.bar-row{display:grid;grid-template-columns:minmax(130px,1fr) minmax(140px,2fr) 54px;gap:10px;align-items:center;font-size:.88rem}.bar-row label{font-weight:750;color:#344054;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.bar-row em{font-style:normal;color:var(--muted);font-weight:750;text-align:right}.orbital-chip{display:inline-flex;align-items:center;gap:8px;padding:7px 10px;background:#f3f4f6;border:1px solid #d1d5db;border-radius:999px;color:#374151;font-weight:750;font-size:.82rem}.profile-card,.group-card,.stat-card,.feature-card,.card{animation:fadeUp .35s ease both}.profile-card:nth-child(2n),.feature-card:nth-child(2n){animation-delay:.04s}.profile-card:nth-child(3n),.feature-card:nth-child(3n){animation-delay:.08s}
        @keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes growBar{from{transform:scaleX(0)}to{transform:scaleX(1)}}@keyframes floatVisual{0%,100%{transform:perspective(1200px) rotateY(-8deg) rotateX(2deg) translateY(0)}50%{transform:perspective(1200px) rotateY(-5deg) rotateX(3deg) translateY(-10px)}}@media(max-width:900px){.hero{grid-template-columns:1fr;min-height:auto}.hero-visual{min-height:240px;transform:none;animation:none}.page-intro{grid-template-columns:1fr}.bar-row{grid-template-columns:1fr}.bar-row em{text-align:left}}

        .concept-hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(260px,.9fr);gap:18px;align-items:stretch;margin-bottom:18px}.concept-panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px;box-shadow:var(--shadow-soft);position:relative;overflow:hidden}.concept-panel.dark{background:linear-gradient(135deg,#111827,#3f4653);color:#fff}.concept-panel.dark p,.concept-panel.dark span{color:#dbe4ef}.concept-metric-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin-top:14px}.concept-metric{background:#f8fafc;border:1px solid #e5e7eb;border-radius:10px;padding:14px}.concept-metric strong{display:block;font-size:1.55rem;color:#111827}.concept-metric span{color:#667085;font-weight:700;font-size:.84rem}.concept-list{display:grid;gap:12px}.concept-item{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px;display:grid;gap:6px;animation:fadeUp .35s ease both}.concept-item h3{margin:0;font-size:1.03rem}.concept-item p{margin:0;color:#667085}.concept-tags{display:flex;gap:6px;flex-wrap:wrap}.concept-tag{display:inline-flex;align-items:center;border:1px solid #d1d5db;background:#f9fafb;border-radius:999px;padding:4px 8px;font-weight:750;font-size:.74rem;color:#344054}.concept-split{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}.concept-timeline{display:grid;gap:10px}.concept-timeline .concept-item{border-left:4px solid #64748b}.mini-viz{height:170px;border-radius:12px;background:linear-gradient(135deg,#f8fafc,#e5e7eb);position:relative;overflow:hidden}.mini-viz:before{content:"";position:absolute;inset:18px;background:repeating-linear-gradient(90deg,rgba(17,24,39,.08) 0 1px,transparent 1px 42px),repeating-linear-gradient(0deg,rgba(17,24,39,.07) 0 1px,transparent 1px 34px);border-radius:10px}.mini-viz:after{content:"";position:absolute;left:12%;right:12%;bottom:30px;height:74px;background:linear-gradient(90deg,#64748b,#2563eb,#14b8a6);clip-path:polygon(0 78%,14% 55%,28% 63%,42% 28%,58% 42%,73% 16%,100% 34%,100% 100%,0 100%);animation:growBar .9s ease both;opacity:.88}@media(max-width:900px){.concept-hero{grid-template-columns:1fr}}

        .icon-btn{width:40px;height:40px;padding:0;border:1px solid var(--line);border-radius:var(--radius);background:#fff;color:#475467;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;font-size:1rem;transition:.16s}.icon-btn:hover{background:#eef6ff;color:var(--primary);border-color:#bcd7ff}.btn:disabled,.btn-small:disabled{opacity:.62;cursor:not-allowed;box-shadow:none}.answer-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-top:16px}.modal-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}.pagination span{padding:8px 14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);font-weight:750;color:#475467}details:not(.nav-more){border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin:12px 0}details:not(.nav-more)>summary{display:flex;align-items:center;gap:8px;padding:12px 14px;color:#344054;border-radius:var(--radius);list-style:none}details:not(.nav-more)>summary::-webkit-details-marker{display:none}details:not(.nav-more)>summary:after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;margin-left:auto;color:#98a2b3;font-size:.78rem;transition:.16s}details[open]:not(.nav-more)>summary{border-bottom:1px solid var(--line);border-radius:var(--radius) var(--radius) 0 0;background:#f8fafc}details[open]:not(.nav-more)>summary:after{transform:rotate(180deg)}details:not(.nav-more)>form,details:not(.nav-more)>div{border:0!important;border-radius:0 0 var(--radius) var(--radius)!important;background:#f8fafc}.question-item [style*="background:#d1fae5"],.question-item [style*="background:#fee2e2"]{border:1px solid rgba(22,163,74,.18)}[style*="border-radius:24px"],[style*="border-radius:20px"],[style*="border-radius:18px"],[style*="border-radius:16px"],[style*="border-radius:14px"],[style*="border-radius:12px"]{border-radius:var(--radius)!important}
        .text-muted{color:var(--muted)!important}.link-primary{color:var(--primary)!important}.text-center{text-align:center!important}.font-strong{font-weight:700}.m-0{margin:0!important}.hidden{display:none!important}.is-hidden{display:none}.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.w-full{width:100%!important}.full-span{grid-column:1/-1}.inline-form{display:inline}.relative{position:relative}.soft-bg{background:#f8fafc!important}.soft-panel{background:#f8fafc;border:1px solid var(--line);border-radius:var(--radius);padding:16px}.form-panel{background:#f8fafc;border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-top:16px}.auth-card{max-width:500px;margin:40px auto}.profile-shell{max-width:700px;margin:0 auto}.edit-shell{max-width:900px;margin:0 auto}.edit-shell-narrow{max-width:800px;margin:0 auto}.edit-shell-wide{max-width:1000px;margin:0 auto}.mt-6{margin-top:6px!important}.mt-8{margin-top:8px!important}.mt-10{margin-top:10px!important}.mt-12{margin-top:12px!important}.mt-14{margin-top:14px!important}.mt-16{margin-top:16px!important}.mt-20{margin-top:20px!important}.mt-24{margin-top:24px!important}.mt-32{margin-top:32px!important}.mb-6{margin-bottom:6px!important}.mb-8{margin-bottom:8px!important}.mb-10{margin-bottom:10px!important}.mb-12{margin-bottom:12px!important}.mb-16{margin-bottom:16px!important}.mb-18{margin-bottom:18px!important}.mb-20{margin-bottom:20px!important}.mb-24{margin-bottom:24px!important}.my-12{margin-top:12px!important;margin-bottom:12px!important}.my-16{margin-top:16px!important;margin-bottom:16px!important}.my-24{margin-top:24px!important;margin-bottom:24px!important}.flex-gap{display:flex;gap:8px}.flex-gap-10{display:flex;gap:10px;flex-wrap:wrap}.flex-gap-12{display:flex;gap:12px;flex-wrap:wrap}.flex-center{display:flex;gap:8px;justify-content:center}.flex-between{display:flex;justify-content:space-between;align-items:center}.align-center{align-items:center}.password-wrap{position:relative}.password-toggle{position:absolute;right:14px;top:50%;transform:translateY(-50%);cursor:pointer;color:#667085}.notification-bell{width:100%;height:100%;padding:0;border:0;background:transparent;font-size:1.3rem;color:#64748b;cursor:pointer}.nav-logout-form{display:inline-flex;margin:0}.nav-logout-form .nav-btn{font:inherit}.hero-lead{font-size:1.08rem;margin-bottom:18px}.hero-cta{background:#fff!important;color:#111827!important;font-size:1rem;padding:13px 22px}.block-action{display:flex!important;width:100%;margin-top:16px}.block-action-top{display:flex!important;width:100%;margin-top:16px}.table-spaced{margin-top:20px}.table-spaced-sm{margin-top:16px}.avatar-placeholder{background:linear-gradient(135deg,#2563eb,#7c3aed);display:inline-flex;align-items:center;justify-content:center;color:#fff}.avatar-placeholder.avatar-large{font-size:3rem}.loading-state{text-align:center;padding:30px}.empty-card-note{text-align:center;color:var(--muted);padding:40px}.empty-card-note i{font-size:3rem;display:block;margin-bottom:16px}.preview-meta{margin:12px 0;display:flex;flex-wrap:wrap;gap:8px}.preview-media{margin-top:12px;display:flex;flex-wrap:wrap;gap:8px}.preview-answer-text{font-weight:600}.question-panel{margin-top:16px}.answer-actions{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}.callout{display:none;margin-top:20px;padding:20px;border-radius:var(--radius)}.callout-warning{background:#fef9c3}.callout-muted{background:#f1f5f9}.callout-success{background:#d1fae5}.choice-list.compact{margin-top:12px}.detail-card{margin-bottom:24px;padding:20px;background:#f8fafc;border:1px solid var(--line);border-radius:var(--radius)}.task-status-pill{position:absolute;top:12px;right:12px;background:#f1f5f9;padding:6px 12px;border-radius:999px;font-size:.75rem}.test-question{margin-bottom:24px;padding:20px;background:#f8fafc;border:1px solid var(--line);border-radius:var(--radius)}.test-summary{margin-top:24px;padding:24px;background:linear-gradient(135deg,#f8fafc,#e0f2fe);border-radius:var(--radius);text-align:center}.test-score{font-size:3rem;font-weight:800;margin:16px 0}.test-title{color:#0f172a}.text-lg{font-size:1.1rem}.text-sm{font-size:.95rem}.status-inline{margin-left:8px}.card-note{color:var(--muted);margin-bottom:16px}.form-row{display:flex;gap:12px;flex-wrap:wrap}.form-row-tight{display:flex;gap:10px;flex-wrap:wrap}.radio-row{display:flex;gap:10px;align-items:flex-start;margin:8px 0}.radio-row input,.checkbox-row input,.choice-option input,.picker-item input{width:20px!important;height:20px!important;min-width:20px!important;margin-top:2px}.checkbox-row{display:flex;gap:8px;align-items:center;margin-bottom:12px}.mini-tags{margin-top:8px}.mini-tags-tight{margin-top:6px}.section-actions{margin:12px 0}.profile-top{text-align:center;margin-bottom:24px}.profile-upload{margin-top:16px}.tariff-note{margin-top:8px;color:var(--muted)}.image-strip{margin:16px 0;display:flex;flex-wrap:wrap;gap:12px}.task-image{max-width:100%;max-height:300px;border-radius:var(--radius);cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.1)}.preview-image{max-width:100%;max-height:200px;border-radius:var(--radius);cursor:pointer;border:1px solid var(--line)}
        .task-card{display:flex;flex-direction:column;min-height:300px;padding-top:50px}.task-card-meta{min-height:66px}.task-card-title{line-height:1.35;margin:10px 0 12px}.task-card-difficulty{font-weight:700;margin-top:auto}.task-card-action{display:flex!important;width:100%;margin-top:16px;justify-content:center}
        .filter-bar{align-items:center}.filter-bar form{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.filter-bar .filter-select,.filter-bar input,.filter-bar select{width:auto;min-width:220px;max-width:100%}.form-panel>form,details>form.soft-panel{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;align-items:start}.form-panel>form>.form-group,details>form.soft-panel>.form-group{margin-bottom:0}.form-panel>form>.form-group:has(textarea),.form-panel>form>.form-group:has(.picker-list),details>form.soft-panel>.form-group:has(textarea),details>form.soft-panel>.form-group:has(.picker-list),.form-panel>form>.test-mode-fields,details>form.soft-panel>.test-mode-fields{grid-column:1/-1}.form-panel>form>.btn,.form-panel>form>button,details>form.soft-panel>.btn,details>form.soft-panel>button{justify-self:start}.test-mode-fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px}.test-mode-fields .form-group{margin-bottom:0}.test-mode-fields .form-group:has(.picker-list){grid-column:1/-1}.picker-list{max-height:230px}.picker-item{border:1px solid transparent}.picker-item:has(input:checked){background:#eef6ff;border-color:#bcd7ff}.picker-item>span{min-width:0;flex:1}.picker-item strong{display:block;overflow:hidden;text-overflow:ellipsis}.form-panel .flex-gap{align-items:center}.form-panel .flex-gap input{min-width:180px}.form-panel .flex-gap .btn-small{flex:0 0 auto}
        .notification-title{font-weight:700;margin-bottom:4px}.notification-message{color:var(--muted);font-size:.9rem}.notification-time{font-size:.75rem;color:#94a3b8;margin-top:8px}.empty-mini{text-align:center;padding:40px;color:var(--muted)}.empty-mini i{font-size:2rem;display:block;margin-bottom:16px;opacity:.45}.empty-mini .large-icon{font-size:3rem}.question-meta{color:var(--muted);font-size:.8rem}.warning-text{color:#f97316}.result-heading-success{color:#065f46}.result-heading-error{color:#991b1b}
        .hero-cta{background:var(--primary)!important;color:#fff!important;border-color:var(--primary)!important}.hero-cta:hover{background:var(--primary-strong)!important;color:#fff!important}.concept-panel.dark .orbital-chip{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.32);color:#fff!important}.concept-panel.dark h2,.concept-panel.dark p{color:#fff}.nav-menu-item{color:#344054!important}.nav-menu-item:hover,.nav-menu-item.active{color:var(--primary)!important}
        .table tr:hover td{background:inherit}.result-detail{margin-bottom:20px;border-radius:var(--radius);overflow:hidden;border:2px solid #e2e8f0}.result-detail-ok{border-color:#10b981}.result-detail-error{border-color:#e2e8f0}.result-detail-body{padding:20px;background:#fff}.result-detail-ok .result-detail-body{background:#f0fdf4}
        .course-title-link{color:#111827;text-decoration:none}.row-danger{background:#fee2e2}
        @media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.hero-visual{transform:none!important}}

        .form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;align-items:start}.form-grid .form-group{margin-bottom:0}.profile-data-form{background:#f8fafc;border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin:16px 0}.profile-data-form .btn-small{margin-top:12px}details.concept-item>summary{font-size:1.02rem}.pricing-card .pricing-price{line-height:1.1}
        .tariff-disabled{background:#eef2f6!important;color:#667085!important;border-color:#d0d5dd!important;cursor:not-allowed}.tariff-disabled:hover{background:#eef2f6!important;box-shadow:none!important}.support-badge{margin-left:6px;min-width:20px;height:20px;padding:0 6px;border-radius:999px;background:#ef4444;color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:850}.question-item.unanswered{background:#fffaf0}.code-editor{font-family:"Cascadia Mono","Consolas","Courier New",monospace!important;min-height:240px!important;background:#0f172a!important;color:#e2e8f0!important;border-color:#24324a!important;line-height:1.55!important;tab-size:4}.code-task-toolbar{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;background:#f8fafc;border:1px solid var(--line);border-radius:var(--radius);padding:10px 12px;margin-bottom:10px;color:#344054;font-weight:800}.code-feedback{margin-top:10px}.code-feedback pre{background:#fff;border-color:#fecdd3;color:#344054;margin-top:8px}
        .achievement-card{text-align:center;border:2px solid #e2e8f0}.achievement-card.earned{border-color:#10b981;background:#f0fdf4}.achievement-icon{font-size:2.2rem;margin-bottom:10px}
        .site-footer{padding:24px;text-align:center;color:var(--muted);font-size:.9rem}.site-footer a{color:inherit}.legal-page{max-width:900px;margin:24px auto;line-height:1.65}.legal-page h1{font-size:2rem}.legal-page h2{font-size:1.2rem;margin-top:24px}.legal-warning{display:block;margin:16px 0;padding:16px;border:1px solid #facc15;border-radius:var(--radius)}

        .site-footer nav{display:flex;justify-content:center;gap:8px 18px;flex-wrap:wrap;margin-bottom:10px}.site-footer nav a{text-underline-offset:3px}.site-footer p{margin:0}
        .hero-home{display:block;min-height:640px;padding:52px 44px;background:#0f172a;isolation:isolate}.hero-home:before{z-index:-1;background:linear-gradient(90deg,rgba(7,18,38,.97) 0%,rgba(7,18,38,.88) 54%,rgba(7,18,38,.35) 100%)}.hero-background{position:absolute;z-index:-2;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}.hero-home .hero-copy{max-width:760px}.hero-home h1{font-size:3.4rem;line-height:1.05;margin:14px 0 8px}.hero-home .hero-lead{max-width:680px;margin:0 0 22px;color:#dbeafe;font-size:1.08rem}.hero-home .orbital-chip{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.3);color:#fff}.hero-campaign{max-width:700px;padding:18px 0 4px 20px;border-left:4px solid #2dd4bf}.hero-campaign__eyebrow{display:flex;align-items:center;gap:8px;color:#99f6e4;font-size:.8rem;font-weight:850;text-transform:uppercase}.hero-campaign h2{margin:5px 0 6px;color:#fff;font-size:2rem;line-height:1.18}.hero-campaign p{max-width:660px;margin:0 0 12px;color:#f1f5f9;font-size:1rem}.hero-campaign__plans{display:flex;gap:8px;flex-wrap:wrap;margin:4px 0 12px}.hero-campaign__plans span{padding:5px 9px;border:1px solid rgba(255,255,255,.32);border-radius:999px;color:#fff;font-size:.78rem;font-weight:800}.hero-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:12px 0 8px}.hero-home .hero-cta{background:#fff!important;color:#0f172a!important;border-color:#fff!important}.hero-home .hero-cta:hover{background:#e2e8f0!important;color:#0f172a!important}.hero-login{background:rgba(15,23,42,.42)!important;border-color:rgba(255,255,255,.45)!important;color:#fff!important}.hero-login:hover{background:rgba(255,255,255,.14)!important}.hero-campaign__terms{display:block;max-width:650px;color:#cbd5e1;font-size:.76rem;line-height:1.45}.hero-home .hero-kpis{margin:20px 0 0}
        .error-page{max-width:680px;margin:72px auto;text-align:center;padding:32px}.error-page .error-code{font-size:4rem;font-weight:850;line-height:1;color:var(--primary);margin-bottom:12px}.error-page h1{font-size:2rem;margin-bottom:12px}.error-page>p:not(.error-code){color:var(--muted);margin-bottom:24px}
        .home-pricing{margin:42px 0 12px;padding:36px 0;border-top:1px solid var(--line)}.home-pricing__heading{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:20px}.home-pricing__heading>div{max-width:760px}.home-pricing__heading h2{font-size:1.9rem;line-height:1.2;margin:12px 0 8px}.home-pricing__heading p{margin:0 0 6px;color:#475467;font-size:1.02rem}.home-pricing__heading small{display:block;color:var(--muted);line-height:1.45}.home-pricing__grid{grid-template-columns:repeat(3,minmax(0,1fr))}.home-pricing__grid .pricing-card{min-height:460px}.home-pricing__grid .pricing-list i{color:var(--success);margin-top:3px}.home-pricing__grid .pricing-actions .btn{white-space:normal;text-align:center}.home-seo-section{margin:42px 0 12px;padding:36px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:30px;align-items:start}.home-seo-copy h2{font-size:1.8rem;line-height:1.25;margin:14px 0 12px}.home-seo-copy p{color:#475467;margin-bottom:12px}
        .breadcrumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:.86rem;margin:0 0 14px}.breadcrumbs a{color:var(--primary);text-underline-offset:3px}.breadcrumbs span:last-child{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:70ch}
        .seo-page{max-width:1100px;margin:0 auto}.seo-hero{position:relative;min-height:430px;display:flex;align-items:flex-end;overflow:hidden;border-radius:var(--radius);padding:42px;color:#fff;background:#111827}.seo-hero:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(15,23,42,.96) 0%,rgba(15,23,42,.82) 52%,rgba(15,23,42,.32) 100%)}.seo-hero>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}.seo-hero>div{position:relative;z-index:1;max-width:720px}.seo-hero .orbital-chip{background:rgba(255,255,255,.92);color:#1f2937}.seo-hero h1{font-size:2.55rem;line-height:1.15;margin:16px 0}.seo-hero p{font-size:1.08rem;line-height:1.65;color:#e2e8f0;max-width:68ch}.seo-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.seo-actions .btn-gray{background:rgba(255,255,255,.12)!important;border-color:rgba(255,255,255,.42)!important}.seo-actions .btn-gray:hover{background:rgba(255,255,255,.2)!important}
        .independent-note{margin:18px 0 36px;padding:14px 16px;border-left:4px solid var(--primary);background:#eef6ff;color:#344054}.seo-article{max-width:840px;margin:0 auto}.seo-article section{padding:4px 0 30px;margin-bottom:28px;border-bottom:1px solid var(--line)}.seo-article h2,.seo-faq h2,.seo-related h2{font-size:1.65rem;line-height:1.3;margin-bottom:14px}.seo-article p{margin-bottom:14px;color:#344054;font-size:1.02rem}.seo-article ul{padding-left:24px;display:grid;gap:9px;color:#344054}.seo-faq,.seo-related{max-width:840px;margin:42px auto}.seo-faq details>div{padding:14px 16px!important}.seo-faq details p{margin:0;color:#344054}
        .seo-link-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.seo-link-item{display:grid;gap:5px;padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;text-decoration:none;min-height:92px}.seo-link-item:hover{border-color:#9fc5ff;background:#f8fbff}.seo-link-item strong{color:#1d4ed8}.seo-link-item span{color:var(--muted);font-size:.9rem}
        @media(max-width:900px){.home-pricing__heading{align-items:flex-start;flex-direction:column}.home-pricing__grid{grid-template-columns:repeat(2,minmax(0,1fr))}.home-pricing__grid .pricing-card{min-height:0}.home-seo-section{grid-template-columns:1fr}.seo-hero{min-height:460px;padding:28px}.seo-hero:after{background:rgba(15,23,42,.82)}.seo-hero h1{font-size:2.05rem}.seo-link-grid{grid-template-columns:1fr}}
        @media(max-width:560px){.home-pricing{padding:28px 0}.home-pricing__heading h2{font-size:1.6rem}.home-pricing__heading>.btn{width:100%}.home-pricing__grid{grid-template-columns:minmax(0,1fr)}.seo-hero{min-height:520px;padding:22px 18px}.seo-hero h1{font-size:1.75rem}.seo-actions{align-items:stretch}.seo-actions .btn{width:100%}.home-seo-section{padding:28px 0}.breadcrumbs span:last-child{max-width:30ch}}
        @media(max-width:900px){.hero-home{min-height:620px;padding:40px 30px}.hero-home:before{background:rgba(7,18,38,.86)}.hero-home .hero-copy{max-width:720px}}
        @media(max-width:560px){.hero-home{min-height:0;padding:30px 18px}.hero-home h1{font-size:2.35rem}.hero-home .hero-lead{font-size:1rem}.hero-campaign{padding:15px 0 2px 14px}.hero-campaign h2{font-size:1.55rem}.hero-actions{align-items:stretch}.hero-actions .btn{width:100%}.hero-home .hero-kpis{display:grid;grid-template-columns:1fr;gap:7px}.hero-home .hero-kpis span{width:max-content;max-width:100%}}

        .auth-title{font-size:1.55rem;line-height:1.25;margin:0 0 8px}.auth-intro{color:var(--muted);margin:0 0 20px}.payment-period-select{width:100%!important;min-width:0!important}.payment-submit-status{margin:0;color:var(--muted);font-size:.82rem;line-height:1.4}.payment-submit-error{color:var(--danger);font-weight:700}.subscription-notice{display:grid;gap:4px;margin:16px 0;padding:14px 16px;border:1px solid #86efac;border-left:4px solid var(--success);border-radius:var(--radius);background:#f0fdf4;color:#14532d}.subscription-settings{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:16px 0;padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:#f8fafc}.subscription-settings h3,.subscription-settings p{margin:0}.subscription-settings p{margin-top:4px;color:var(--muted)}.payment-renewal-note{margin:0;color:#344054;font-size:.82rem;font-weight:750;min-height:34px}.offer-consent span{display:block}

        .profile-completion-notice{display:flex;align-items:center;gap:14px;margin-bottom:16px;padding:14px 16px;border:1px solid #facc15;border-left:4px solid var(--warning);border-radius:var(--radius);background:#fffbeb;color:#713f12}.profile-completion-notice>i{width:22px;height:22px;display:inline-flex;align-items:center;justify-content:center;font-size:1.1rem;flex:0 0 22px}.profile-completion-notice>div{display:grid;gap:2px;min-width:0;flex:1}.profile-completion-notice span{color:#854d0e;font-size:.9rem}.teacher-dashboard-actions,.teacher-group-create-form{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.teacher-group-create-form{flex:1}.teacher-group-create-form input{min-width:220px;flex:1;padding:9px 11px;border:1px solid var(--line);border-radius:var(--radius);font:inherit;min-height:38px}.teacher-group-create-form input:focus{outline:none;border-color:var(--primary);box-shadow:var(--focus)}
        .nav-btn>i,.nav-menu-item>i,.notification-bell>i{width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center;line-height:1;flex:0 0 18px}
        .public-nav-links{display:flex;align-items:center;justify-content:flex-end;gap:6px}.public-nav-menu{display:none}

        @media(max-width:768px){body:has(.notification-center) .header{flex-wrap:nowrap;padding:8px 12px}body:has(.notification-center) .nav-buttons{flex:1;min-width:0;flex-wrap:nowrap;overflow-x:auto;justify-content:flex-start}body:has(.notification-center) .nav-buttons>span{display:none}body:has(.notification-center) .nav-buttons>.nav-btn,body:has(.notification-center) .nav-buttons>.nav-more>summary,body:has(.notification-center) .nav-logout-form .nav-btn{width:40px;min-width:40px;padding:0;font-size:0}body:has(.notification-center) .nav-buttons>.nav-btn i,body:has(.notification-center) .nav-buttons>.nav-more>summary i,body:has(.notification-center) .nav-logout-form .nav-btn i{font-size:1rem;margin:0}.form-group>.flex-gap{flex-direction:column;align-items:stretch}.form-group>.flex-gap>*{width:100%;min-width:0}.table th{position:sticky;top:0;z-index:1;background:#f8fafc}}
        @media(max-width:768px){body:has(.notification-center) .logo{flex:0 0 auto}body:has(.notification-center) .logo i{width:42px;height:42px;font-size:1rem;line-height:1}body:has(.notification-center) .notification-center,body:has(.notification-center) .nav-buttons>.nav-btn,body:has(.notification-center) .nav-buttons>.nav-more>summary,body:has(.notification-center) .nav-logout-form .nav-btn{width:42px;min-width:42px;height:42px;min-height:42px}body:has(.notification-center) .nav-buttons>.nav-more,body:has(.notification-center) .nav-logout-form{height:42px;flex:0 0 auto}body:has(.notification-center) .notification-bell{display:flex;align-items:center;justify-content:center;line-height:1}body:has(.notification-center) .nav-buttons>.nav-btn i,body:has(.notification-center) .nav-buttons>.nav-more>summary i,body:has(.notification-center) .nav-logout-form .nav-btn i,body:has(.notification-center) .notification-bell i{width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center;line-height:1;flex:0 0 18px}.profile-completion-notice{align-items:flex-start;flex-wrap:wrap}.profile-completion-notice .btn-small{width:100%}.teacher-dashboard-actions,.teacher-group-create-form{align-items:stretch}.teacher-group-create-form{width:100%}.teacher-group-create-form input,.teacher-group-create-form button{width:100%;min-width:0}}
        @media(max-width:430px){body:has(.notification-center) .logo span{display:none}}
        @media(max-width:700px){.public-header{min-height:60px;flex-direction:row;align-items:center;padding:8px 12px}.public-header .nav-buttons{width:auto;margin-left:auto;padding:0;overflow:visible}.public-header .public-nav-links{display:none}.public-header .public-nav-menu{display:block;height:42px}.public-header .public-nav-menu>summary{width:42px;min-width:42px;height:42px;padding:0}.public-header .public-nav-menu .nav-menu{position:absolute;top:calc(100% + 8px);right:0;left:auto;width:min(300px,calc(100vw - 24px));min-width:0}.public-header .logo i{width:42px;height:42px}.public-header .logo span{display:inline}}

        /* Keep dense administration screens inside the viewport. */
        html,body{max-width:100%;overflow-x:hidden}.container,.card,.form-panel,.soft-panel,.concept-panel,.glass-panel,.profile-card,.group-card,.pricing-card,details,.grid>*,.form-grid>*,.concept-split>*{min-width:0}.table-container{width:100%;max-width:100%;-webkit-overflow-scrolling:touch}.form-group input,.form-group select,.form-group textarea,.filter-select{max-width:100%;min-width:0}img,video,canvas{max-width:100%;height:auto}pre{max-width:100%;overflow-x:auto;overflow-wrap:anywhere}.card h2,.card h3,.task-card-title,.notification-title{overflow-wrap:anywhere}
        @media(max-width:768px){.container{width:100%;padding:12px}.card,.form-panel,.soft-panel,.concept-panel,.glass-panel{padding:14px}.form-panel>form,details>form.soft-panel,.form-grid,.test-mode-fields,.concept-split{grid-template-columns:minmax(0,1fr)}.filter-bar,.filter-bar form{display:grid;grid-template-columns:minmax(0,1fr);width:100%;align-items:stretch}.filter-bar .filter-select,.filter-bar input,.filter-bar select{width:100%;min-width:0}.flex-between{align-items:flex-start;gap:10px;flex-wrap:wrap}.modal-content{width:100%;max-width:100%;padding:16px}.picker-list,.multi-select-container{max-height:260px}.pricing-description,.pricing-note,.pricing-price{min-height:0}.table{min-width:620px}.nav-menu{position:fixed;left:12px;right:12px;top:auto;min-width:0}.header{width:100%}}
        @media(max-width:480px){.action-buttons,.answer-actions,.modal-actions{display:grid;grid-template-columns:minmax(0,1fr);width:100%}.action-buttons form,.action-buttons a,.answer-actions>*{width:100%}.stats-grid,.pricing-grid,.insight-grid,.concept-metric-grid{grid-template-columns:minmax(0,1fr)}.table th,.table td{padding:10px}.question-item,.test-question,.answer-box{padding:14px}.task-card{min-height:0;padding-top:44px}.subscription-settings{align-items:flex-start;flex-direction:column}.subscription-settings form,.subscription-settings button{width:100%}}

/* Tariff retention flow */
.subscription-frozen-notice { border-left-color: #b42318; }
.subscription-warning-notice { border-left-color: #b54708; }
.tariff-retention-page { max-width: 980px; margin-inline: auto; }
.page-heading-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.retention-groups { display: grid; gap: 12px; margin: 18px 0; }
.retention-group { border: 1px solid #d7dce5; padding: 14px; background: #fff; }
.retention-group-title { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.retention-group-title > span { display: flex; flex-direction: column; gap: 2px; }
.retention-group-title small,
.retention-students small { color: #667085; }
.retention-students { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 16px; margin-top: 12px; padding-top: 12px; border-top: 1px solid #e4e7ec; }
.retention-students label { display: flex; align-items: center; gap: 8px; min-width: 0; }
.retention-students span { min-width: 0; overflow-wrap: anywhere; }
.retention-checkout { display: grid; gap: 12px; max-width: 620px; }
@media (max-width: 700px) {
    .page-heading-row { flex-direction: column; }
    .retention-students { grid-template-columns: 1fr; }
}