:root {
            /* Light Theme - From Skeleton */
            --bg-primary: #ffffff;
            --bg-secondary: #f8fafc;
            --bg-card: #ffffff;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --text-muted: #6b7684;
            --border-color: #e2e8f0;
            --shadow-light: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
            --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --shadow-heavy: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
            
            /* Brand Colors */
            --blue-50: #eff6ff;
            --blue-500: #3b82f6;
            --blue-600: #2563eb;
            --blue-700: #1d4ed8;
            
            --red-600: #dc2626;
            --red-700: #b91c1c;
            
            --success-500: #22c55e;
            --success-600: #16a34a;
            
            /* Gradients */
            --gradient-primary: linear-gradient(135deg, #2563eb, #dc2626);
            --gradient-hover: linear-gradient(135deg, #1d4ed8, #b91c1c);
            
            --accent-primary: #2563eb;
            --accent-hover: #1d4ed8;
            
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
        }

        [data-theme="dark"] {
            --bg-primary: #03060d;
            --bg-secondary: #0c0f12;
            --bg-card: #090a0e;
            --text-primary: #a8f2fa;
            --text-secondary: #bec8d5;
            --text-muted: #6b7787;
            --border-color: #334155;
            --shadow-light: 0 1px 3px 0 rgba(0, 0, 0, 0.5);
            --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
            --shadow-heavy: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        /* Custom scrollbars (matches home.html) */
        *::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        *::-webkit-scrollbar-track {
            background: var(--bg-secondary);
            border-radius: 4px;
        }
        *::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 4px;
            transition: background 0.3s ease;
        }
        *::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }
        *::-webkit-scrollbar-corner {
            background: var(--bg-secondary);
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            transition: background 0.3s ease, color 0.3s ease;
        }

        /* Animated Background */
        .animated-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            overflow: hidden;
            pointer-events: none;
        }

        .wave {
            position: absolute;
            border-radius: 50%;
            opacity: 0.08;
            animation: float 8s ease-in-out infinite;
        }

        .wave:nth-child(1) {
            width: 400px;
            height: 400px;
            background: linear-gradient(45deg, var(--blue-500), var(--blue-600));
            top: 10%;
            left: 5%;
            animation-delay: 0s;
        }

        .wave:nth-child(2) {
            width: 300px;
            height: 300px;
            background: linear-gradient(45deg, var(--red-600), var(--red-700));
            top: 50%;
            right: 10%;
            animation-delay: 2s;
        }

        .wave:nth-child(3) {
            width: 350px;
            height: 350px;
            background: linear-gradient(45deg, var(--blue-600), var(--blue-700));
            bottom: 15%;
            left: 15%;
            animation-delay: 4s;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px) rotate(0deg); }
            33% { transform: translateY(-30px) rotate(8deg); }
            66% { transform: translateY(15px) rotate(-5deg); }
        }

        /* Header */
        .header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-light);
        }

        [data-theme="dark"] .header {
            background: rgba(3, 6, 13, 0.95);
        }

        .nav {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            text-decoration: none;
            color: var(--text-primary);
            transition: transform 0.3s ease;
        }

        .logo:hover {
            transform: scale(1.05);
        }

        .logo img {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            box-shadow: var(--shadow-light);
        }

        .logo-text {
            font-size: 1.5rem;
            font-weight: 800;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1.5rem;
            border: none;
            border-radius: var(--radius-lg);
            font-size: 0.875rem;
            font-weight: 600;
            text-decoration: none;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            white-space: nowrap;
            user-select: none;
        }

        .btn-primary {
            background: var(--gradient-primary);
            color: white;
            box-shadow: var(--shadow-medium);
        }

        .btn-primary:hover {
            background: var(--gradient-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-heavy);
        }

        .btn-secondary {
            background: var(--bg-card);
            color: var(--text-primary);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-light);
        }

        .btn-secondary:hover {
            background: var(--bg-secondary);
            border-color: var(--accent-primary);
            transform: translateY(-1px);
            color: var(--accent-primary);
        }

        .btn-ghost {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-color);
        }

        .btn-ghost:hover {
            border-color: var(--accent-primary);
            color: var(--accent-primary);
        }

        /* Theme Toggle FAB */
        .theme-toggle-float {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            z-index: 100;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--accent-primary);
            cursor: pointer;
            box-shadow: var(--shadow-heavy);
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
        }

        .theme-toggle-float:hover {
            transform: translateY(-4px) scale(1.1);
            box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.3);
            background: var(--accent-primary);
            color: white;
        }

        /* Container */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        /* Section */
        .section {
            padding: 5rem 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }

        .kicker {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1rem;
            border-radius: 2rem;
            background: var(--blue-50);
            color: var(--blue-600);
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 1rem;
            border: 1px solid var(--border-color);
        }

        [data-theme="dark"] .kicker {
            background: rgba(37, 99, 235, 0.1);
            color: var(--blue-500);
        }

        .section-title {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1.125rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* Hero */
        .hero {
            padding: 4rem 0;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 3rem;
            align-items: start;
        }

        .hero-title {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 1.5rem;
            letter-spacing: -0.03em;
        }

        .hero-title strong {
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.125rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 600px;
        }

        .hero-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 2rem;
        }

        .hero-points {
            list-style: none;
            display: grid;
            gap: 0.75rem;
        }

        .hero-points li {
            display: flex;
            gap: 0.75rem;
            align-items: flex-start;
            color: var(--text-secondary);
            font-size: 0.9375rem;
        }

        .hero-points i {
            color: var(--success-500);
            margin-top: 0.25rem;
            flex-shrink: 0;
        }

        /* Hero Card */
        .hero-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: 2rem;
            box-shadow: var(--shadow-medium);
            transition: all 0.3s ease;
        }

        .hero-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-heavy);
        }

        .hero-card h3 {
            font-size: 1.125rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .hero-card p {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.6;
            margin-bottom: 1.5rem;
        }

        .mini-grid {
            display: grid;
            gap: 0.75rem;
        }

        .mini-item {
            display: flex;
            gap: 0.875rem;
            padding: 1rem;
            border-radius: var(--radius-lg);
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .mini-item:hover {
            border-color: var(--accent-primary);
            transform: translateX(4px);
        }

        .mini-item i {
            color: var(--accent-primary);
            margin-top: 0.25rem;
            font-size: 1.125rem;
            flex-shrink: 0;
        }

        .mini-item strong {
            display: block;
            font-size: 0.9375rem;
            font-weight: 600;
            margin-bottom: 0.25rem;
        }

        .mini-item span {
            display: block;
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* Video */
        .video-wrap {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-heavy);
            transition: all 0.3s ease;
        }

        .video-wrap:hover {
            transform: translateY(-4px);
            box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.3);
        }

        .video-aspect {
            aspect-ratio: 16/9;
            background: var(--bg-secondary);
        }

        .video-aspect iframe {
            width: 100%;
            height: 100%;
            border: 0;
        }

        /* Grid Layouts */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            align-items: start;
        }

        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 1.5rem;
            align-items: start;
        }

        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
            align-items: start;
        }

        /* Cards */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: 2rem;
            box-shadow: var(--shadow-light);
            transition: all 0.3s ease;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-heavy);
            border-color: var(--accent-primary);
        }

        .card h3 {
            font-size: 1.125rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .card h3 i {
            color: var(--accent-primary);
        }

        .card p {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.7;
        }

        /* Checklist */
        .checklist {
            list-style: none;
            display: grid;
            gap: 0.875rem;
            margin-top: 1rem;
        }

        .checklist li {
            display: flex;
            gap: 0.75rem;
            align-items: flex-start;
            color: var(--text-secondary);
            font-size: 0.9375rem;
        }

        .checklist i {
            color: var(--success-500);
            margin-top: 0.25rem;
            flex-shrink: 0;
        }

        /* FAQ */
        .faq {
            max-width: 800px;
            margin: 0 auto;
            display: grid;
            gap: 1rem;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-light);
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: var(--accent-primary);
        }

        .faq-q {
            width: 100%;
            padding: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            background: transparent;
            border: none;
            cursor: pointer;
            text-align: left;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.9375rem;
            transition: all 0.3s ease;
        }

        .faq-q:hover {
            color: var(--accent-primary);
        }

        .faq-q i {
            color: var(--accent-primary);
            font-size: 0.875rem;
        }

        .chev {
            transition: transform 0.3s ease;
        }

        .faq-item[aria-expanded="true"] .chev {
            transform: rotate(180deg);
        }

        .faq-a {
            padding: 0 1.5rem 1.5rem;
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.7;
            display: none;
        }

        .faq-item[aria-expanded="true"] .faq-a {
            display: block;
        }

        /* Testimonials */
        .quote {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
        }

        .quote i {
            color: var(--accent-primary);
            margin-top: 0.25rem;
            font-size: 1.5rem;
            flex-shrink: 0;
        }

        .quote p {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.7;
            font-style: italic;
        }

        .quote footer {
            margin-top: 1rem;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 0.9375rem;
        }

        .quote footer span {
            display: block;
            color: var(--text-muted);
            font-weight: 500;
            font-size: 0.875rem;
            margin-top: 0.25rem;
        }

        /* CTA */
        .cta {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: 3rem;
            text-align: center;
            box-shadow: var(--shadow-medium);
        }

        .cta h3 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            margin-bottom: 1rem;
        }

        .cta p {
            color: var(--text-secondary);
            font-size: 1.125rem;
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-actions {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Footer (from skeleton.html) */
        .footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: 3rem 0 2rem;
        }

        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 3rem;
            margin-bottom: 2rem;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 1rem;
        }

        .footer-brand img {
            width: 32px;
            height: 32px;
            border-radius: 6px;
        }

        .footer-brand-text {
            font-size: 1.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--blue-600), var(--red-600));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .footer-description {
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 1.5rem;
        }

        .footer-section h4 {
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 0.5rem;
        }

        .footer-links a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-links a:hover {
            color: var(--accent-primary);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 2rem;
            text-align: center;
            color: var(--text-muted);
        }

        .footer-bottom > p {
            margin: 0 0 1.5rem;
            max-width: 52rem;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }

        .footer-badges {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 1rem 1.5rem;
            max-width: 100%;
        }

        .footer-partner-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex: 0 1 auto;
            line-height: 0;
            max-width: 100%;
            text-decoration: none;
        }

        .footer-partner-badge-img {
            display: block;
            max-width: 100%;
            height: auto;
        }

        .footer-partner-badge--ph .footer-partner-badge-img {
            width: min(250px, 100%);
            max-height: 54px;
            object-fit: contain;
        }

        .footer-partner-badge--ls .footer-partner-badge-img {
            height: 44px;
            width: auto;
            max-width: min(220px, 100%);
            object-fit: contain;
        }

        .footer-partner-badge-img--dark {
            display: none;
        }

        [data-theme="dark"] .footer-partner-badge-img--light {
            display: none;
        }

        [data-theme="dark"] .footer-partner-badge-img--dark {
            display: block;
        }

        .footer-badge {
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: 2rem;
        }

        .badge-madeby {
            display: inline-flex;
            align-items: center;
            gap: 0.75rem;
            background: var(--bg-card);
            color: var(--text-primary);
            padding: 0.875rem 1.75rem;
            border-radius: 0.75rem;
            font-weight: 600;
            font-size: 0.9375rem;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            text-decoration: none;
            flex: 0 1 auto;
            max-width: 100%;
        }

        .valynx-logo {
            width: 45px;
            height: 45px;
            border-radius: 0.5rem;
            object-fit: cover;
        }

        .madeby-text {
            display: flex;
            align-items: center;
            gap: 0.35rem;
        }

        .madeby-text strong {
            color: var(--accent-primary);
        }

        .trademark {
            font-size: 1.5rem;
            color: var(--text-secondary);
            margin-left: 0.1rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
            }
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 1.5rem;
            }
            .section {
                padding: 3rem 0;
            }
            .hero {
                padding: 2rem 0;
            }
            .theme-toggle-float {
                bottom: 1rem;
                right: 1rem;
                width: 48px;
                height: 48px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-content {
                padding: 0 1rem;
            }
            .footer-badges {
                flex-direction: column;
                gap: 0.875rem;
                padding: 0 0.25rem;
            }
            .footer-partner-badge {
                width: 100%;
                max-width: 280px;
            }
            .footer-partner-badge--ph .footer-partner-badge-img {
                width: 100%;
                max-width: 220px;
                max-height: 48px;
            }
            .footer-partner-badge--ls .footer-partner-badge-img {
                height: 40px;
            }
            .badge-madeby {
                width: 100%;
                max-width: 280px;
                justify-content: center;
                padding: 0.75rem 1rem;
                font-size: 0.875rem;
            }
            .valynx-logo {
                width: 40px;
                height: 40px;
            }
        }
    
/* Funnel prototype */
.kicker-pain { background: var(--blue-50); color: var(--red-600); }
[data-theme="dark"] .kicker-pain { background: rgba(220,38,38,.12); color: #fca5a5; }
.proto-badge { display:inline-block;font-size:.75rem;font-weight:600;padding:.35rem .75rem;border-radius:99px;background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-muted);margin-bottom:1rem; }
.funnel-step { display:none; }
.funnel-step.active { display:block; animation:fadeIn .35s ease; }
@keyframes fadeIn { from{opacity:0;transform:translateY(10px)} to{opacity:1;transform:none} }
.funnel-progress { margin-bottom:1.5rem; }
.funnel-progress-bar { height:6px;background:var(--bg-secondary);border-radius:99px;overflow:hidden;border:1px solid var(--border-color); }
.funnel-progress-fill { height:100%;background:var(--gradient-primary);transition:width .4s ease;width:0; }
.funnel-progress-label { font-size:.75rem;color:var(--text-muted);margin-bottom:.5rem;font-weight:600; }
.form-group { margin-bottom:1.25rem; }
.form-label { display:block;font-size:.875rem;font-weight:600;margin-bottom:.5rem; }
.form-input, .form-select, .form-textarea { width:100%;padding:.75rem 1rem;border:1px solid var(--border-color);border-radius:var(--radius-lg);background:var(--bg-primary);color:var(--text-primary);font-family:inherit;font-size:.9375rem; }
.form-input:focus, .form-select:focus, .form-textarea:focus { outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px rgba(37,99,235,.12); }
.form-textarea { resize:vertical; min-height:88px; }
.option-grid { display:grid;gap:.75rem; }
.option-grid--styles { grid-template-columns:repeat(auto-fill, minmax(min(100%, 220px), 1fr)); }
@media (max-width:480px) {
  .option-grid--styles { grid-template-columns:1fr; }
}
.skill-suggest-row { display:flex; flex-wrap:wrap; align-items:center; gap:.5rem .65rem; margin-bottom:1.1rem; }
.skill-suggest-label { font-size:.75rem; font-weight:600; color:var(--text-muted); text-transform:uppercase; letter-spacing:.04em; }
.skill-suggest-chip {
  display:inline-flex; align-items:center; gap:.4rem; padding:.45rem .85rem; font-size:.8125rem; font-weight:600;
  border-radius:999px; border:1px solid var(--border-color); background:var(--bg-card, var(--bg-secondary));
  color:var(--text-primary); cursor:pointer; transition:border-color .15s, background .15s;
}
.skill-suggest-chip:hover { border-color:var(--accent-primary); background:rgba(37,99,235,.06); }
.skill-suggest-chip i { color:var(--accent-primary); font-size:.8rem; }
.option-card { text-align:left;padding:1rem 1.15rem;border-radius:var(--radius-lg);border:2px solid var(--border-color);background:var(--bg-secondary);cursor:pointer;transition:.2s;font-family:inherit;color:var(--text-primary);width:100%; }
.option-card:hover { border-color:var(--accent-primary); }
.option-card.selected { border-color:var(--accent-primary);background:var(--blue-50); }
[data-theme="dark"] .option-card.selected { background:rgba(37,99,235,.12); }
.option-card strong { display:block;font-size:.9375rem;margin-bottom:.2rem; }
.option-card span { font-size:.8125rem;color:var(--text-secondary); }
.profile-metric { padding:1rem;border-radius:var(--radius-lg);background:var(--bg-secondary);border:1px solid var(--border-color);margin-bottom:.75rem; }
.profile-metric .label { font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);font-weight:700; }
.profile-metric .value { font-size:1.125rem;font-weight:800;margin:.25rem 0 .5rem; }
.meter { height:6px;background:var(--border-color);border-radius:99px;overflow:hidden; }
.meter > div { height:100%;background:var(--gradient-primary);border-radius:99px; }
.lesson-content { color:var(--text-secondary);font-size:.9375rem;line-height:1.75; }
.lesson-content h4 { color:var(--text-primary);margin:1rem 0 .5rem; }
.quiz-option { display:block;width:100%;text-align:left;padding:.875rem 1rem;margin-bottom:.5rem;border-radius:var(--radius-lg);border:2px solid var(--border-color);background:var(--bg-secondary);cursor:pointer;font-size:.875rem;color:var(--text-primary); }
.quiz-option.correct { border-color:var(--success-500); }
.quiz-option.wrong { border-color:var(--red-600); }
.hp-field { position:absolute;left:-9999px;opacity:0;height:0;width:0;overflow:hidden;pointer-events:none; }
.funnel-registered-notice { padding:.5rem 0 1rem; }
.loading-state { text-align:center;padding:2rem;color:var(--text-secondary); }
.loading-state .spinner { width:40px;height:40px;border:3px solid var(--border-color);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 1rem; }
@keyframes spin { to{transform:rotate(360deg)} }
.nav-row { display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-top:1.5rem;flex-wrap:wrap; }
.insight-item { display:flex;gap:.75rem;padding:1rem;border-radius:var(--radius-lg);background:var(--bg-secondary);border:1px solid var(--border-color);margin-bottom:.75rem; }
.insight-item i { color:var(--accent-primary);margin-top:.2rem; }
.lesson-theory { color:var(--text-secondary);font-size:.9375rem;line-height:1.75;margin-bottom:1rem; }
.lesson-theory h1,.lesson-theory h2,.lesson-theory h3,.lesson-theory h4 { color:var(--text-primary);margin:1rem 0 .5rem; }
.lesson-theory p { margin-bottom:.75rem; }
.lesson-theory ul,.lesson-theory ol { margin:.5rem 0 .75rem 1.25rem; }
.lesson-theory .visual-demo,.lesson-theory [class*="visual"] { border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:1rem;margin:1rem 0;background:var(--bg-secondary); }
.lesson-key-points { margin:.5rem 0 1rem 1.25rem; }
.lesson-key-points li { margin-bottom:.35rem; }
#funnel-panel .funnel-step[data-step="lesson"] .lesson-theory { max-height:min(50vh,480px);overflow-y:auto;padding-right:.5rem; }

/* Hero showcase */
.hero-card-showcase { padding:0; overflow:hidden; background:transparent; border:none; box-shadow:none; }
.hero-card-showcase:hover { transform:none; box-shadow:none; }
.hero-showcase { position:relative; min-height:420px; }
.showcase-glow { position:absolute; inset:10% 5%; background:radial-gradient(circle at 30% 20%, rgba(99,102,241,.35), transparent 55%), radial-gradient(circle at 80% 70%, rgba(236,72,153,.25), transparent 50%); filter:blur(20px); z-index:0; }
.showcase-card { position:relative; z-index:1; padding:1.5rem; width:100%; }
.showcase-top { display:flex; justify-content:space-between; align-items:center; margin-bottom:1rem; gap:.75rem; flex-wrap:wrap; }
.showcase-live { display:inline-flex; align-items:center; gap:.5rem; font-size:.75rem; font-weight:700; color:var(--success-600); text-transform:uppercase; letter-spacing:.04em; }
.showcase-pulse { width:8px; height:8px; border-radius:50%; background:var(--success-500); box-shadow:0 0 0 0 rgba(34,197,94,.6); animation:showcasePulse 2s infinite; }
@keyframes showcasePulse { 0%{box-shadow:0 0 0 0 rgba(34,197,94,.5)} 70%{box-shadow:0 0 0 10px rgba(34,197,94,0)} 100%{box-shadow:0 0 0 0 rgba(34,197,94,0)} }
.showcase-pill { font-size:.75rem; font-weight:700; padding:.35rem .65rem; border-radius:99px; background:var(--bg-secondary); border:1px solid var(--border-color); color:var(--text-secondary); }
.showcase-headline { font-size:.9375rem; font-weight:700; color:var(--text-primary); margin:0 0 1rem; line-height:1.4; }
.showcase-headline-sm { font-size:.8125rem; margin-top:1rem; color:var(--text-muted); text-transform:uppercase; letter-spacing:.04em; }
.showcase-charts-note { font-size:.7rem; color:var(--text-muted); text-align:center; margin:-.5rem 0 1rem; line-height:1.4; }
.showcase-charts { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:.75rem; margin-bottom:.5rem; }
.profile-charts { margin:1rem 0 1.25rem; }
.metric-ring {
  text-align:center;
  padding:.75rem .5rem;
  border-radius:var(--radius-lg);
  background:var(--bg-secondary);
  border:1px solid var(--border-color);
  animation:slideInUp .45s ease both;
}
.metric-ring:nth-child(1) { animation-delay:.1s; }
.metric-ring:nth-child(2) { animation-delay:.25s; }
.metric-ring:nth-child(3) { animation-delay:.4s; }
@keyframes slideInUp {
  from { opacity:0; transform:translateY(10px); }
  to { opacity:1; transform:translateY(0); }
}
.metric-ring-svg { width:92px; height:92px; display:block; margin:0 auto; }
.metric-ring-track { stroke:rgba(148,163,184,.22); }
[data-theme="dark"] .metric-ring-track { stroke:rgba(148,163,184,.16); }
.metric-ring-progress {
  transition:stroke-dashoffset 1.35s cubic-bezier(.22,1,.36,1);
}
.metric-ring-value {
  fill:var(--text-primary);
  font-size:15px;
  font-weight:800;
  font-family:Inter,system-ui,sans-serif;
}
.metric-ring-label {
  display:block;
  margin-top:.4rem;
  font-size:.7rem;
  font-weight:600;
  color:var(--text-secondary);
  line-height:1.3;
}
.funnel-quiz-section { padding-top:0; }
.funnel-quiz-section.is-visible { animation:fadeIn .4s ease; }
.funnel-quiz-shell { padding:2rem; }
#funnel-panel .funnel-step { display:none; }
#funnel-panel .funnel-step.active { display:block; animation:fadeIn .35s ease; }
.profile-session-pill { display:inline-flex; align-items:center; gap:.5rem; padding:.65rem 1rem; border-radius:99px; background:var(--bg-secondary); border:1px solid var(--border-color); font-size:.875rem; color:var(--text-secondary); margin-bottom:1rem; }
.profile-session-pill strong { color:var(--text-primary); }
.showcase-unlock-stack { display:grid; gap:.75rem; margin-bottom:1rem; }
.showcase-unlock { display:flex; gap:.875rem; align-items:flex-start; padding:1rem; border-radius:var(--radius-lg); background:var(--bg-secondary); border:1px solid var(--border-color); position:relative; transition:border-color .25s ease, transform .25s ease; }
.showcase-unlock:hover { border-color:var(--accent-primary); transform:translateX(4px); }
.showcase-unlock-featured { border-color:rgba(37,99,235,.35); background:linear-gradient(135deg, rgba(37,99,235,.08), rgba(220,38,38,.06)); }
[data-theme="dark"] .showcase-unlock-featured { background:linear-gradient(135deg, rgba(37,99,235,.15), rgba(220,38,38,.1)); }
.unlock-icon { width:40px; height:40px; border-radius:12px; display:flex; align-items:center; justify-content:center; background:var(--gradient-primary); color:#fff; flex-shrink:0; font-size:1rem; }
.unlock-copy { flex:1; min-width:0; }
.unlock-copy strong { display:block; font-size:.9375rem; margin-bottom:.2rem; color:var(--text-primary); }
.unlock-copy span { display:block; font-size:.8125rem; color:var(--text-secondary); line-height:1.45; }
.unlock-badge { position:absolute; top:.65rem; right:.65rem; font-size:.625rem; font-weight:800; text-transform:uppercase; letter-spacing:.04em; padding:.2rem .45rem; border-radius:99px; background:var(--gradient-primary); color:#fff; }
.showcase-proof { display:flex; flex-wrap:wrap; gap:.5rem 1rem; justify-content:center; padding-top:.75rem; border-top:1px solid var(--border-color); }
.showcase-proof span { font-size:.75rem; font-weight:600; color:var(--text-muted); display:inline-flex; align-items:center; gap:.35rem; }
.showcase-proof i { color:var(--success-500); font-size:.7rem; }
.hero-showcase { position:relative; min-height:auto; }

/* Demo lesson section */
.demo-lesson-section { padding-top:0; }
.demo-lesson-section.is-visible { animation:fadeIn .4s ease; }
.demo-lesson-shell { padding:2rem; }
.demo-lesson-shell [data-demo-panel] { display:none; }
.demo-lesson-shell [data-demo-panel].active { display:block; animation:fadeIn .35s ease; }
.demo-lesson-title { font-size:clamp(1.25rem,2.5vw,1.75rem); margin-bottom:1rem; line-height:1.3; }
.lesson-key-block { margin-bottom:1.5rem; padding:1rem 1.25rem; border-radius:var(--radius-lg); background:var(--bg-secondary); border:1px solid var(--border-color); }
.lesson-key-block h4 { margin:0 0 .75rem; font-size:.875rem; text-transform:uppercase; letter-spacing:.05em; color:var(--text-muted); }
.lesson-key-points { margin:0; padding-left:1.25rem; }
.lesson-key-points li { margin:.5rem 0; color:var(--text-secondary); line-height:1.6; }
.lesson-section-heading { margin:1.5rem 0 .75rem; color:var(--text-primary); }
.lesson-theory { color:var(--text-secondary); font-size:.9375rem; line-height:1.75; margin-bottom:1rem; }
.lesson-theory h1,.lesson-theory h2,.lesson-theory h3,.lesson-theory h4 { color:var(--text-primary); margin:1.25rem 0 .65rem; line-height:1.35; }
.lesson-theory p { margin-bottom:.75rem; }
.lesson-theory ul,.lesson-theory ol { margin:.5rem 0 .75rem 1.25rem; }
.lesson-theory .lesson-list { margin:.75rem 0 1rem 1.25rem; }
.lesson-theory .lesson-hr { border:0; height:1px; background:var(--border-color); margin:1.5rem 0; }
.lesson-inline-code { background:var(--bg-secondary); border:1px solid var(--border-color); padding:.1rem .35rem; border-radius:4px; font-family:ui-monospace, SFMono-Regular, Menlo, monospace; font-size:.85em; color:var(--text-primary); }
.lesson-code-block { margin:1rem 0; border-radius:var(--radius-lg); overflow:hidden; border:1px solid var(--border-color); background:#0f172a; }
.lesson-code-head { padding:.45rem .75rem; background:rgba(255,255,255,.06); border-bottom:1px solid rgba(255,255,255,.08); font-size:.7rem; font-weight:700; color:#94a3b8; text-transform:uppercase; letter-spacing:.05em; }
.lesson-code-block pre { margin:0; padding:1rem; overflow-x:auto; }
.lesson-code-block code { font-family:ui-monospace, SFMono-Regular, Menlo, monospace; font-size:.8125rem; line-height:1.6; color:#e2e8f0; white-space:pre-wrap; word-break:break-word; }
.latex-content .katex { font-size:1.05em; color:var(--text-primary); }
.latex-content .katex-display { margin:1rem 0; padding:1rem; background:var(--bg-secondary); border-radius:var(--radius-lg); border:1px solid var(--border-color); overflow-x:auto; }
[data-theme="dark"] .demo-lesson-shell .lesson-theory div[style],
[data-theme="dark"] .demo-lesson-shell .lesson-theory pre,
[data-theme="dark"] .demo-lesson-shell .lesson-theory code {
  border-color:var(--border-color) !important;
}
[data-theme="dark"] .demo-lesson-shell .lesson-theory [style*="background:#fff"],
[data-theme="dark"] .demo-lesson-shell .lesson-theory [style*="background: #fff"],
[data-theme="dark"] .demo-lesson-shell .lesson-theory [style*="background:#ffffff"],
[data-theme="dark"] .demo-lesson-shell .lesson-theory [style*="background: white"],
[data-theme="dark"] .demo-lesson-shell .lesson-theory [style*="background:#f"],
[data-theme="dark"] .demo-lesson-shell .lesson-theory [style*="background: rgb(255"] {
  background:var(--bg-secondary) !important;
  color:var(--text-primary) !important;
}
[data-theme="dark"] .demo-lesson-shell .lesson-theory [style*="color:#1"],
[data-theme="dark"] .demo-lesson-shell .lesson-theory [style*="color: #1"],
[data-theme="dark"] .demo-lesson-shell .lesson-theory [style*="color:#0"],
[data-theme="dark"] .demo-lesson-shell .lesson-theory [style*="color: rgb(0"] {
  color:var(--text-primary) !important;
}
[data-theme="dark"] .demo-lesson-shell .lesson-theory [style*="border"][style*="#0"],
[data-theme="dark"] .demo-lesson-shell .lesson-theory [style*="border"][style*="green"],
[data-theme="dark"] .demo-lesson-shell .lesson-theory [style*="border: 2px solid"] {
  border-color:var(--border-color) !important;
  box-shadow:none !important;
}
@media (max-width:768px) {
  .showcase-charts { grid-template-columns:1fr; max-width:280px; margin-left:auto; margin-right:auto; }
  .demo-lesson-shell { padding:1.25rem; }
  .funnel-quiz-shell { padding:1.25rem; }
  .unlock-badge { position:static; display:inline-block; margin-top:.5rem; }
}

.funnel-hint { color:var(--text-secondary);font-size:.9rem;margin:.75rem 0 1rem; }
.funnel-hint-sm { font-size:.8125rem;color:var(--text-muted);margin-bottom:1rem; }
.funnel-step-label { font-size:.75rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.75rem; }
.gradient-text { background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text; }
.btn-block { width:100%; }
.funnel-complete { background:var(--bg-card); border:1px solid var(--border-color); border-radius:var(--radius-xl); padding:1.25rem; box-shadow:var(--shadow-light); }
.demo-cta-row { display:flex; gap:1rem; justify-content:center; flex-wrap:wrap; margin-top:2rem; }

/* ── Site nav (features / index hybrid) ── */
.header { z-index:200; }
.nav { max-width:1200px; gap:1rem; }
.nav-links { display:flex; align-items:center; gap:1.25rem; list-style:none; margin:0; padding:0; }
.nav-links li { list-style:none; }
.nav-links a { color:var(--text-secondary); text-decoration:none; font-weight:500; padding:.5rem 1rem; border-radius:8px; position:relative; transition:all .3s ease; font-size:.875rem; white-space:nowrap; }
.nav-links a::after { content:''; position:absolute; bottom:0; left:50%; width:0; height:2px; background:var(--gradient-primary); transition:all .3s ease; transform:translateX(-50%); }
.nav-links a:hover { color:var(--accent-primary); background:var(--bg-secondary); transform:translateY(-1px); }
.nav-links a:hover::after { width:80%; }
.nav-actions { display:flex; align-items:center; gap:.75rem; flex-shrink:0; }
.theme-toggle { background:var(--bg-card); border:1px solid var(--border-color); border-radius:25px; color:var(--accent-primary); padding:.5rem .75rem; cursor:pointer; transition:all .3s ease; display:inline-flex; align-items:center; gap:.5rem; min-width:80px; justify-content:center; box-shadow:var(--shadow-light); font-family:inherit; font-size:.8125rem; font-weight:600; }
.theme-toggle:hover { background:var(--accent-primary); color:#fff; border-color:var(--accent-primary); transform:translateY(-2px); box-shadow:var(--shadow-medium); }
.theme-toggle:hover i, .theme-toggle:hover span { color:#fff !important; }
[data-theme="dark"] .theme-toggle { background:var(--bg-card); color:var(--accent-primary); }
.account-icon { background:var(--gradient-primary); color:#fff; border:none; border-radius:25px; padding:.7rem 1.15rem; font-weight:600; text-decoration:none; display:inline-flex; align-items:center; gap:.5rem; transition:all .3s ease; box-shadow:var(--shadow-medium); font-size:.875rem; white-space:nowrap; }
.account-icon:hover { background:var(--gradient-hover); transform:translateY(-2px); box-shadow:var(--shadow-heavy); color:#fff; }
.hamburger { display:none; flex-direction:column; justify-content:center; align-items:center; cursor:pointer; padding:0; width:40px; height:40px; background:transparent; border:none; z-index:1002; gap:6px; -webkit-tap-highlight-color:transparent; position:relative; }
.hamburger span { width:26px; height:3px; background-color:var(--text-primary); border-radius:4px; transition:all .3s cubic-bezier(.4,0,.2,1); transform-origin:center; }
.hamburger.active span:nth-child(1) { transform:translateY(9px) rotate(45deg); background-color:var(--accent-primary); }
.hamburger.active span:nth-child(2) { opacity:0; transform:scale(0); }
.hamburger.active span:nth-child(3) { transform:translateY(-9px) rotate(-45deg); background-color:var(--accent-primary); }
.mobile-nav-overlay { position:fixed; top:0; left:-100%; width:100%; height:100vh; background:var(--bg-primary); z-index:1000; transition:left .3s ease; padding-top:80px; overflow-y:auto; }
.mobile-nav-overlay.active { left:0; }
.mobile-nav-links { display:flex; flex-direction:column; padding:0 2rem; }
.mobile-nav-links a { color:var(--text-primary); text-decoration:none; font-weight:600; font-size:1.125rem; padding:1rem 0; border-bottom:1px solid var(--border-color); transition:all .3s ease; }
.mobile-nav-links a:hover { color:var(--accent-primary); padding-left:1rem; }
.mobile-nav-actions { display:flex; flex-direction:column; padding:2rem; gap:1rem; border-top:2px solid var(--border-color); margin-top:1rem; }
.theme-toggle-float { z-index:150; }
[data-theme="dark"] .theme-toggle-float { background:var(--bg-card); border-color:var(--border-color); color:var(--accent-primary); }
[data-theme="dark"] .theme-toggle-float:hover { background:var(--accent-primary); color:#fff; }
[data-theme="dark"] .hamburger span { background-color:var(--text-primary); }
[data-theme="dark"] .mobile-nav-overlay { background:var(--bg-primary); }

@media (max-width:950px) {
  .nav { padding:0 1rem; }
  .nav-links { display:none !important; }
  .hamburger { display:flex; }
  .nav-actions .theme-toggle,
  .nav-actions .account-icon { display:none !important; }
}
@media (max-width:768px) {
  .hero-actions { flex-direction:column; align-items:stretch; }
  .hero-actions .btn { width:100%; justify-content:center; }
  .cta-actions { flex-direction:column; align-items:stretch; }
  .cta-actions .btn { width:100%; }
  .theme-toggle-float { bottom:1rem; right:1rem; width:48px; height:48px; font-size:1rem; }
  .activation-steps { grid-template-columns:1fr !important; }
  .activation-step::after { display:none !important; }
  .grid-4 { grid-template-columns:1fr !important; }
}

/* Activation funnel band */
.section-tight { padding:3.5rem 0; }
.activation-band {
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: 0 8px 32px rgba(15,23,42,0.06);
}
[data-theme="dark"] .activation-band {
  background: rgba(24,24,32,0.55);
  border-color: rgba(255,255,255,0.08);
  box-shadow: 0 8px 32px rgba(0,0,0,0.25);
}
.activation-steps { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:1rem; margin-top:1.5rem; }
.activation-step { text-align:center; padding:1.25rem 1rem; border-radius:var(--radius-lg); background:rgba(255,255,255,0.35); border:1px solid var(--border-color); position:relative; }
[data-theme="dark"] .activation-step { background:rgba(255,255,255,0.04); }
.activation-step .step-num { display:inline-flex; align-items:center; justify-content:center; width:28px; height:28px; border-radius:50%; background:var(--gradient-primary); color:#fff; font-size:.75rem; font-weight:800; margin-bottom:.5rem; }
.activation-step strong { display:block; font-size:.875rem; margin-bottom:.25rem; color:var(--text-primary); }
.activation-step span { font-size:.75rem; color:var(--text-secondary); line-height:1.4; }
.activation-step.active-step { border-color:var(--accent-primary); box-shadow:var(--shadow-medium); }
.value-intro-grid { display:grid; grid-template-columns:1fr 1fr; gap:2rem; align-items:start; }
@media (max-width:900px) { .value-intro-grid { grid-template-columns:1fr; } }
.glass-surface.card,
.card.glass-surface {
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.35);
  box-shadow: 0 8px 32px rgba(15,23,42,0.06);
}
[data-theme="dark"] .glass-surface.card,
[data-theme="dark"] .card.glass-surface {
  background: rgba(24,24,32,0.55);
  border-color: rgba(255,255,255,0.08);
  box-shadow: 0 8px 32px rgba(0,0,0,0.25);
}
.value-intro-grid .edge-card { height:auto; align-self:start; margin:0; padding:1.75rem; }
.pain-stats { display:grid; grid-template-columns:repeat(3,1fr); gap:1rem; margin-top:1.5rem; }
.pain-stat { text-align:center; padding:1rem; border-radius:var(--radius-lg); }
.pain-stat .num { font-size:1.75rem; font-weight:800; background:var(--gradient-primary); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.pain-stat .lbl { font-size:.8125rem; color:var(--text-secondary); margin-top:.25rem; }
@media (max-width:768px) { .pain-stats { grid-template-columns:1fr; } }

/* ---- Lesson blocks (funnel v2 engine) ---- */
.lb-meta { font-size:.8125rem; color:var(--text-muted); margin-bottom:1rem; display:flex; align-items:center; gap:.5rem; }
.lb-block { margin-bottom:1.25rem; padding-bottom:1.25rem; border-bottom:1px solid var(--border-color); }
.lb-block:last-child { border-bottom:0; }
.lb-block-title { margin:0 0 .65rem; font-size:1rem; color:var(--text-primary); }
.lb-hook { font-size:1.0625rem; font-weight:600; color:var(--text-primary); line-height:1.5; padding:.75rem 1rem; border-left:3px solid var(--accent-primary); background:var(--bg-secondary); border-radius:0 var(--radius-lg) var(--radius-lg) 0; }
.lb-hook-visual { border-left:0; border-radius:var(--radius-lg); padding:1.25rem 1.5rem; background:linear-gradient(135deg, rgba(37,99,235,.12), rgba(124,58,237,.08)); border:1px solid rgba(37,99,235,.25); font-size:1.125rem; }
.lb-style-badge { display:inline-block; padding:.15rem .5rem; border-radius:999px; background:rgba(37,99,235,.15); color:var(--accent-primary); font-weight:700; font-size:.75rem; }
.lb-concept-card { padding:1rem 1.25rem; border-radius:var(--radius-lg); background:var(--bg-secondary); border:1px solid var(--border-color); }
.lb-diagram-frame { position:relative; }
.lb-diagram-canvas { padding:.5rem; border-radius:var(--radius-lg); background:linear-gradient(180deg, rgba(15,23,42,.4), rgba(30,41,59,.2)); border:1px solid rgba(100,116,139,.3); }
.lb-diagram-rendered, .lb-diagram { margin:1rem 0; padding:1rem; background:var(--bg-secondary); border-radius:var(--radius-lg); border:1px solid var(--border-color); overflow-x:auto; }
.lb-diagram-rendered svg { max-width:100%; height:auto; display:block; margin:0 auto; }
.lb-diagram-fallback { font-size:.75rem; color:var(--text-muted); white-space:pre-wrap; }
/* Visual compare (replaces bland tables) */
.lb-compare-visual { margin:1rem 0; }
.lb-compare-grid { display:flex; flex-direction:column; gap:.5rem; }
.lb-compare-header-row, .lb-compare-body-row { display:grid; grid-template-columns:minmax(100px,1fr) 1fr 1fr; gap:.5rem; align-items:stretch; }
.lb-compare-col-head { padding:.85rem 1rem; border-radius:var(--radius-lg); font-weight:800; text-align:center; font-size:.9rem; }
.lb-compare-side-0 { background:linear-gradient(135deg, rgba(37,99,235,.2), rgba(37,99,235,.08)); border:1px solid rgba(37,99,235,.35); color:var(--text-primary); }
.lb-compare-side-1 { background:linear-gradient(135deg, rgba(124,58,237,.2), rgba(124,58,237,.08)); border:1px solid rgba(124,58,237,.35); color:var(--text-primary); }
.lb-compare-row-label { padding:.75rem 1rem; font-weight:700; font-size:.8rem; color:var(--text-muted); display:flex; align-items:center; }
.lb-compare-cell { padding:.85rem 1rem; border-radius:var(--radius-lg); background:var(--bg-secondary); border:1px solid var(--border-color); font-size:.875rem; line-height:1.5; }
.lb-compare-corner { display:none; }
@media (max-width:600px) { .lb-compare-header-row, .lb-compare-body-row { grid-template-columns:1fr; } .lb-compare-row-label { background:var(--bg-secondary); border-radius:var(--radius-lg); } }
.lb-table-wrap { overflow-x:auto; margin:1rem 0; }
.lb-table { width:100%; border-collapse:collapse; font-size:.875rem; }
.lb-table caption { text-align:left; font-weight:700; margin-bottom:.5rem; color:var(--text-primary); }
.lb-table th, .lb-table td { border:1px solid var(--border-color); padding:.6rem .75rem; text-align:left; }
.lb-table thead th { background:var(--bg-secondary); font-weight:700; }
.lb-flashcards { margin:1rem 0; }
.lb-fc-progress { font-size:.75rem; color:var(--text-muted); margin-bottom:.5rem; }
.lb-fc-stage { min-height:140px; position:relative; }
.lb-fc-card { display:none; cursor:pointer; }
.lb-fc-card.active { display:block; }
.lb-fc-inner { position:relative; min-height:120px; transform-style:preserve-3d; transition:transform .45s; }
.lb-fc-card.flipped .lb-fc-inner { transform:rotateY(180deg); }
.lb-fc-front, .lb-fc-back { position:absolute; inset:0; backface-visibility:hidden; border-radius:var(--radius-lg); border:1px solid var(--border-color); padding:0; background:var(--bg-card, var(--bg-secondary)); display:flex; flex-direction:column; overflow:hidden; box-shadow:0 2px 12px rgba(0,0,0,.08); }
.lb-fc-back { transform:rotateY(180deg); background:var(--bg-secondary); border-color:color-mix(in srgb, var(--accent-primary) 30%, var(--border-color)); }
.lb-fc-label { font-size:.65rem; text-transform:uppercase; letter-spacing:.06em; color:var(--text-muted); margin-bottom:.35rem; }
.lb-fc-text { font-size:1rem; color:var(--text-primary); line-height:1.5; }
.lb-fc-nav { display:flex; gap:.5rem; justify-content:center; margin-top:.75rem; }
.lb-video-moment { display:flex; flex-direction:column; gap:1rem; padding:1.25rem; background:linear-gradient(180deg, var(--bg-secondary), transparent); border-radius:var(--radius-lg); border:1px solid var(--border-color); }
.lb-video-transcript { border-color:rgba(124,58,237,.35); background:linear-gradient(180deg, rgba(124,58,237,.08), transparent); }
.lb-video-header { display:flex; flex-wrap:wrap; align-items:center; gap:.5rem; font-size:.95rem; }
.lb-video-header .fab { color:#ff0000; font-size:1.1rem; }
.lb-video-ref-badge { display:inline-block; font-size:.65rem; font-weight:700; text-transform:uppercase; letter-spacing:.04em; color:#7c3aed; background:rgba(124,58,237,.12); padding:.25rem .55rem; border-radius:4px; }
.lb-video-quote { margin:.5rem 0 0; padding:.75rem 1rem; border-left:3px solid var(--accent-primary); background:rgba(37,99,235,.08); border-radius:0 var(--radius-lg) var(--radius-lg) 0; font-size:.875rem; font-style:italic; color:var(--text-secondary); }
.lb-video-thumb-wide { position:relative; display:block; border-radius:var(--radius-lg); overflow:hidden; max-height:200px; }
.lb-video-thumb-wide img { width:100%; object-fit:cover; display:block; opacity:.85; }
.lb-video-embed { position:relative; width:100%; padding-bottom:56.25%; height:0; overflow:hidden; border-radius:var(--radius-lg); background:#000; box-shadow:0 8px 32px rgba(0,0,0,.35); }
.lb-video-embed iframe { position:absolute; inset:0; width:100%; height:100%; border:0; }
.lb-video-author { display:block; font-size:.75rem; color:var(--text-muted); margin-top:.15rem; }
.lb-video-clip-badge { display:inline-block; font-size:.7rem; font-weight:700; color:var(--accent-primary); background:rgba(37,99,235,.1); padding:.2rem .5rem; border-radius:4px; margin:.25rem 0; }
.lb-video-thumb { position:relative; flex-shrink:0; width:120px; border-radius:8px; overflow:hidden; }
.lb-video-thumb img { width:100%; display:block; }
.lb-video-play { position:absolute; inset:0; display:flex; align-items:center; justify-content:center; background:rgba(0,0,0,.35); color:#fff; font-size:1.25rem; }
.lb-source-link { font-size:.8125rem; color:var(--accent-primary); text-decoration:none; font-weight:600; }
.lb-source-link:hover { text-decoration:underline; }
.lb-activity { padding:1rem 1.25rem; border-radius:var(--radius-lg); border:1px solid var(--border-color); background:var(--bg-secondary); }
.lb-activity-badge { display:inline-flex; align-items:center; gap:.35rem; font-size:.7rem; font-weight:700; text-transform:uppercase; letter-spacing:.05em; color:var(--accent-primary); margin-bottom:.5rem; }
.lb-success-criteria { font-size:.8125rem; margin-top:.5rem; color:var(--text-secondary); }
.lb-brainstorm-prompts { margin:.5rem 0 1rem 1.25rem; color:var(--text-secondary); }
.lb-checklist { list-style:none; margin:.75rem 0 0; padding:0; }
.lb-checklist li { margin:.5rem 0; color:var(--text-secondary); display:flex; gap:.5rem; align-items:flex-start; }
.lb-definitions .lb-dl { margin:0; }
.lb-definitions dt { font-weight:700; color:var(--text-primary); margin-top:.75rem; }
.lb-definitions dd { margin:.25rem 0 0; color:var(--text-secondary); }
.lb-source-note { display:flex; gap:.75rem; padding:1rem; background:var(--bg-secondary); border-radius:var(--radius-lg); font-size:.875rem; }
.lb-sources-footer { margin-top:1.5rem; padding-top:1rem; border-top:1px solid var(--border-color); font-size:.8125rem; }
.lb-sources-footer ul { margin:.5rem 0 0 1.25rem; }
.lb-reading-body { line-height:1.75; color:var(--text-secondary); }
.lb-steps { margin:.75rem 0 0 1.25rem; color:var(--text-secondary); }
.lb-steps li { margin:.5rem 0; }
.lb-step-cards { display:flex; flex-direction:column; gap:.65rem; margin-top:.75rem; }
.lb-step-card { display:flex; gap:.85rem; align-items:flex-start; padding:.85rem 1rem; border-radius:var(--radius-lg); background:var(--bg-secondary); border:1px solid var(--border-color); }
.lb-step-num { flex-shrink:0; width:1.75rem; height:1.75rem; border-radius:50%; background:var(--accent-primary); color:#fff; font-weight:800; font-size:.8rem; display:flex; align-items:center; justify-content:center; }
.lb-step-text { font-size:.875rem; line-height:1.55; color:var(--text-secondary); }
.lb-check-interactive .lb-check-reveal { margin-top:.5rem; }
.lb-check-answer { margin-top:.65rem; padding:.75rem 1rem; border-radius:var(--radius-lg); background:rgba(16,185,129,.1); border:1px solid rgba(16,185,129,.3); font-size:.875rem; color:var(--text-secondary); }
.lb-key-visual { padding:1rem 1.25rem; border-radius:var(--radius-lg); background:linear-gradient(135deg, rgba(37,99,235,.08), rgba(220,38,38,.04)); border:1px solid var(--border-color); }
.lb-sources-footer h4 { font-size:.8rem; margin:1rem 0 .35rem; color:var(--text-muted); text-transform:uppercase; letter-spacing:.05em; }
.lb-sources-footer h4:first-child { margin-top:0; }
.lb-src-tag { font-size:.65rem; color:var(--text-muted); font-weight:600; }
.lb-sources-ref li { opacity:.85; }

/* ---- Premium Visual Learning v7 ---- */
.lb-lesson-shell { display:flex; flex-direction:column; gap:.25rem; }
.lb-lesson-header { margin-bottom:.75rem; padding-bottom:.75rem; border-bottom:1px solid var(--border-color); }
.lb-lesson-title { margin:0 0 .35rem; font-size:1.15rem; font-weight:800; background:var(--gradient-primary, linear-gradient(135deg,#2563eb,#7c3aed)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.lb-block-chip { display:inline-block; font-size:.6rem; font-weight:800; text-transform:uppercase; letter-spacing:.08em; padding:.2rem .55rem; border-radius:999px; background:rgba(37,99,235,.15); color:var(--accent-primary); margin-bottom:.5rem; }
.lb-hook-text { margin-top:.5rem; }

/* Visual flow (HTML fallback when Mermaid fails) — compact mobile-first */
.lb-visual-flow { margin:.65rem auto; max-width:min(100%, 340px); }
.lb-flow-track { display:flex; flex-direction:column; align-items:center; gap:.1rem; padding:.25rem 0; }
.lb-flow-node { width:100%; max-width:min(100%, 300px); animation: lbFadeUp .35s ease calc(var(--node-i) * .06s) both; }
@keyframes lbFadeUp { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:none; } }
.lb-flow-node-inner { display:flex; align-items:center; gap:.5rem; padding:.5rem .7rem; border-radius:.65rem; background:linear-gradient(135deg, rgba(37,99,235,.14), rgba(124,58,237,.08)); border:1px solid rgba(37,99,235,.28); box-shadow:0 2px 10px rgba(37,99,235,.08); }
.lb-flow-emoji { font-size:1rem; flex-shrink:0; line-height:1; }
.lb-flow-label { font-size:.8125rem; font-weight:600; color:var(--text-primary); line-height:1.35; }
.lb-flow-connector { color:var(--accent-primary); opacity:.45; padding:.05rem 0; font-size:.6rem; line-height:1; }

/* Premium diagrams */
.lb-diagram-premium { position:relative; margin:1.25rem 0; }
.lb-diagram-header { margin-bottom:.75rem; }
.lb-diagram-caption { font-size:.8rem; color:var(--text-muted); margin:.25rem 0 0; }
.lb-diagram-canvas { position:relative; padding:.85rem; border-radius:1rem; background:linear-gradient(160deg, rgba(15,23,42,.85), rgba(30,41,59,.5)); border:1px solid rgba(100,116,139,.35); overflow:auto; max-width:100%; box-sizing:border-box; min-height:auto; display:block; }
.lb-diagram-canvas-tall { max-height:min(78vh, 760px); }
.lb-diagram-canvas-wide { overflow-x: auto; overflow-y: auto; }
.lb-diagram-canvas-wide .lb-diagram-svg-wrap { min-width:min-content; }
.lb-diagram-glow { position:absolute; inset:-1px; border-radius:1rem; background:linear-gradient(135deg, rgba(37,99,235,.25), rgba(124,58,237,.15)); filter:blur(20px); opacity:.5; z-index:0; pointer-events:none; }
.lb-diagram-canvas .lb-mermaid, .lb-diagram-canvas .lb-diagram-rendered { position:relative; z-index:1; }
.lb-diagram-rendered { padding:.5rem; }
.lb-mermaid-svg { max-width:100%; height:auto; display:block; margin:0 auto; }
.lb-diagram-hint { font-size:.7rem; color:var(--text-muted); text-align:center; margin:.5rem 0 0; opacity:.7; }

/* Icon concept cards */
.lb-concept-grid { margin:1rem 0; }
.lb-icon-cards { display:grid; grid-template-columns:repeat(auto-fill, minmax(140px, 1fr)); gap:.65rem; margin-top:.75rem; }
.lb-icon-card { padding:1rem; border-radius:var(--radius-lg); background:var(--bg-secondary); border:1px solid var(--border-color); text-align:center; transition:transform .2s, border-color .2s; animation: lbFadeUp .35s ease calc(var(--card-i) * .06s) both; }
.lb-icon-card:hover { transform:translateY(-3px); border-color:rgba(37,99,235,.4); }
.lb-icon-card-emoji { font-size:1.75rem; display:block; margin-bottom:.35rem; }
.lb-icon-card p { margin:0; font-size:.8rem; line-height:1.45; color:var(--text-secondary); }

/* VS compare */
.lb-compare-vs { margin:1.25rem 0; }
.lb-vs-hero { display:flex; align-items:center; justify-content:center; gap:1rem; margin:1rem 0; }
.lb-vs-side { flex:1; text-align:center; padding:1rem; border-radius:var(--radius-lg); font-size:.95rem; }
.lb-vs-left { background:linear-gradient(135deg, rgba(37,99,235,.2), rgba(37,99,235,.05)); border:1px solid rgba(37,99,235,.4); }
.lb-vs-right { background:linear-gradient(135deg, rgba(124,58,237,.2), rgba(124,58,237,.05)); border:1px solid rgba(124,58,237,.4); }
.lb-vs-icon { display:block; font-size:1.5rem; margin-bottom:.25rem; }
.lb-vs-badge { font-weight:900; font-size:.75rem; padding:.35rem .65rem; border-radius:999px; background:var(--bg-primary); border:2px solid var(--border-color); color:var(--text-muted); }
.lb-compare-cards { display:flex; flex-direction:column; gap:.5rem; }
.lb-compare-card-row { border-radius:var(--radius-lg); overflow:hidden; border:1px solid var(--border-color); }
.lb-compare-card-label { padding:.5rem .85rem; font-size:.7rem; font-weight:800; text-transform:uppercase; letter-spacing:.05em; color:var(--text-muted); background:var(--bg-secondary); }
.lb-compare-card-cells { display:grid; grid-template-columns:1fr 1fr; }
.lb-compare-card-cells .lb-compare-cell { border-radius:0; border:0; border-top:1px solid var(--border-color); }
.lb-compare-card-cells .lb-compare-side-0 { border-right:1px solid var(--border-color); }
.lb-cell-inner { padding:.85rem; font-size:.85rem; line-height:1.5; }

/* Premium flashcards */
.lb-flashcards-premium { margin:1.25rem 0; }
.lb-fc-header { margin-bottom:.5rem; }
.lb-fc-progress-bar { height:4px; background:var(--border-color); border-radius:999px; overflow:hidden; margin-bottom:.35rem; }
.lb-fc-progress-fill { height:100%; background:var(--accent-primary); border-radius:999px; transition:width .3s ease; }
.lb-fc-dots { display:flex; gap:.35rem; justify-content:center; margin-bottom:.65rem; }
.lb-fc-dot { width:8px; height:8px; border-radius:50%; background:var(--border-color); cursor:pointer; transition:background .2s, transform .2s; }
.lb-fc-dot.active { background:var(--accent-primary); transform:scale(1.2); }
.lb-fc-btn { padding:.5rem 1rem; border-radius:var(--radius-lg); border:1px solid var(--border-color); background:var(--bg-secondary); color:var(--text-primary); cursor:pointer; font-size:.8rem; transition:background .2s, border-color .2s; }
.lb-fc-btn:hover:not(:disabled) { border-color:var(--accent-primary); background:color-mix(in srgb, var(--accent-primary) 10%, transparent); }
.lb-fc-btn:disabled { opacity:.4; cursor:not-allowed; }

/* Source notes premium */
.lb-source-premium { display:flex; gap:1rem; padding:1.15rem; border-radius:var(--radius-lg); background:linear-gradient(135deg, rgba(37,99,235,.06), transparent); border:1px solid var(--border-color); margin:1rem 0; }
.lb-source-icon { width:2.5rem; height:2.5rem; border-radius:50%; background:rgba(37,99,235,.15); display:flex; align-items:center; justify-content:center; color:var(--accent-primary); flex-shrink:0; }
.lb-source-body { flex:1; min-width:0; }

/* Check premium */
.lb-check-premium { padding:1.15rem; border-radius:var(--radius-lg); border:1px solid var(--border-color); background:var(--bg-secondary); overflow:visible; }
.lb-check-project { overflow:visible; padding-bottom:1.15rem; }
.lb-check-project .lb-workspace-wrap { margin-top:1.15rem; margin-bottom:0; padding-left:.1rem; padding-right:.1rem; }
.lb-check-reveal { margin-top:.65rem; padding:.5rem 1rem; border-radius:var(--radius-lg); border:1px solid var(--accent-primary); background:transparent; color:var(--accent-primary); cursor:pointer; font-size:.8rem; font-weight:600; transition:background .2s; }
.lb-check-reveal:hover { background:color-mix(in srgb, var(--accent-primary) 10%, transparent); }
.lb-check-premium.revealed { border-color:color-mix(in srgb, var(--success-500, #10b981) 40%, var(--border-color)); }

/* Term cards */
.lb-term-cards { display:grid; gap:.5rem; }
.lb-term-card { padding:.85rem 1rem; border-radius:var(--radius-lg); background:var(--bg-secondary); border-left:3px solid var(--accent-primary); }
.lb-term-card dt { font-weight:700; margin:0; }
.lb-term-card dd { margin:.25rem 0 0; font-size:.875rem; color:var(--text-secondary); }

/* Activity premium */
.lb-activity-premium { border-left:3px solid var(--accent-primary); background:var(--bg-card, var(--bg-secondary)); }

/* Quiz options (funnel) */
.quiz-options { display:flex; flex-direction:column; gap:.65rem; margin:1rem 0; }
.quiz-option { display:flex; align-items:flex-start; gap:.75rem; text-align:left; width:100%; padding:.85rem 1rem; border:2px solid var(--border-color); border-radius:var(--radius-lg); background:var(--bg-primary); color:var(--text-primary); cursor:pointer; transition:border-color .2s, background .2s; font-size:.9375rem; }
.quiz-option:hover { border-color:var(--accent-primary); }
.quiz-option.correct { border-color:var(--success-500, #10b981); background:rgba(16,185,129,.1); }
.quiz-option.wrong { border-color:var(--red-500, #ef4444); background:rgba(239,68,68,.08); }
.quiz-option-letter { flex-shrink:0; width:1.75rem; height:1.75rem; border-radius:50%; background:var(--bg-secondary); display:flex; align-items:center; justify-content:center; font-weight:700; font-size:.8125rem; }
.quiz-option.correct .quiz-option-letter { background:var(--success-500, #10b981); color:#fff; }
.lq-explanation { margin:1rem 0; padding:1rem; border-radius:var(--radius-lg); background:var(--bg-secondary); border:1px solid var(--border-color); font-size:.875rem; color:var(--text-secondary); line-height:1.6; }

/* Exercise feedback (funnel) */
.funnel-ex-list { margin:.5rem 0 0 1.25rem; padding:0; font-size:.875rem; }
.funnel-ex-ok { color:var(--success-600, #059669); margin-bottom:.5rem; }
.funnel-ex-warn { color:var(--warning-600, #d97706); margin-bottom:.5rem; }
.funnel-ex-solution { margin-top:1rem; padding-top:1rem; border-top:1px solid var(--border-color); font-size:.875rem; }
.funnel-ex-hint { font-size:.8125rem; color:var(--text-muted); margin-top:.5rem; }
#funnel-panel .funnel-step[data-step="lesson"] .lesson-content { max-height:min(55vh,520px); overflow-y:auto; padding-right:.35rem; }
#demo-lesson-section .lesson-content,
#demo-lesson-section #lesson-body { max-height:none; overflow:visible; }
body.lo-dev-active #demo-lesson-section .lesson-content,
body.lo-dev-active #demo-lesson-section #lesson-body { max-height:none; overflow:visible; padding-right:0; }

/* ── v9: Premium flashcards (theme-native, mobile-first) ── */
.lb-flashcards-premium { margin:1.25rem 0; padding:1rem; border-radius:var(--radius-lg); background:var(--bg-secondary); border:1px solid var(--border-color); }
.lb-fc-meta { display:flex; justify-content:flex-end; margin-bottom:.5rem; }
.lb-fc-deck-badge { font-size:.7rem; font-weight:700; letter-spacing:.04em; text-transform:uppercase; color:var(--accent-primary); background:color-mix(in srgb, var(--accent-primary) 12%, transparent); padding:.25rem .65rem; border-radius:999px; }
.lb-fc-stage { min-height:11rem; position:relative; perspective:1000px; margin-bottom:.75rem; }
.lb-fc-card { display:none; cursor:pointer; }
.lb-fc-card.active { display:block; animation:lb-fc-in .35s ease; }
@keyframes lb-fc-in { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:none; } }
.lb-fc-inner { position:relative; min-height:11rem; height:100%; transform-style:preserve-3d; transition:transform .5s cubic-bezier(.4,.2,.2,1); }
.lb-fc-card.flipped .lb-fc-inner { transform:rotateY(180deg); }
.lb-fc-front, .lb-fc-back {
    position:absolute; inset:0; backface-visibility:hidden; border-radius:var(--radius-lg);
    border:1px solid var(--border-color); background:var(--bg-card, var(--bg-primary));
    display:flex; flex-direction:column; overflow:hidden;
    box-shadow:0 2px 12px rgba(0,0,0,.08);
}
.lb-fc-back {
    transform:rotateY(180deg);
    background:var(--bg-secondary);
    border-color:color-mix(in srgb, var(--accent-primary) 30%, var(--border-color));
}
.lb-fc-top { display:flex; align-items:center; justify-content:space-between; gap:.5rem; padding:.6rem .85rem; flex-shrink:0; border-bottom:1px solid var(--border-color); background:color-mix(in srgb, var(--accent-primary) 6%, transparent); }
.lb-fc-body { flex:1; min-height:0; overflow:hidden; padding:.85rem 1rem; display:flex; flex-direction:column; align-items:center; justify-content:center; }
.lb-fc-back .lb-fc-body { align-items:stretch; justify-content:flex-start; overflow-y:auto; overflow-x:hidden; scrollbar-width:thin; scrollbar-color:color-mix(in srgb, var(--accent-primary, #2563eb) 35%, transparent) transparent; }
.lb-fc-back .lb-fc-body::-webkit-scrollbar { width:5px; }
.lb-fc-back .lb-fc-body::-webkit-scrollbar-thumb { background:color-mix(in srgb, var(--accent-primary, #2563eb) 30%, var(--border-color, #e2e8f0)); border-radius:999px; }
.lb-fc-body-front { overflow:hidden; }
.lb-fc-card-num { position:static; width:1.5rem; height:1.5rem; border-radius:50%; font-size:.65rem; font-weight:800; display:flex; align-items:center; justify-content:center; background:color-mix(in srgb, var(--accent-primary) 18%, var(--bg-secondary)); color:var(--accent-primary); flex-shrink:0; }
.lb-fc-front .lb-fc-label, .lb-fc-back .lb-fc-label { font-size:.65rem; text-transform:uppercase; letter-spacing:.1em; color:var(--text-muted); margin:0; }
.lb-fc-front .lb-fc-text, .lb-fc-back .lb-fc-text { font-size:clamp(.875rem, 2.5vw, 1rem); line-height:1.55; font-weight:500; color:var(--text-primary); text-align:center; width:100%; max-width:none; }
.lb-fc-back .lb-fc-text { font-size:clamp(.8125rem, 2.3vw, .95rem); font-weight:400; text-align:left; }
.lb-fc-tap-hint { flex-shrink:0; padding:.45rem .75rem; font-size:.65rem; color:var(--text-muted); text-align:center; border-top:1px solid var(--border-color); margin:0; }
.lb-fc-nav { display:flex; gap:.5rem; justify-content:center; margin-top:0; flex-wrap:wrap; }
.lb-fc-btn.lb-fc-flip { background:var(--accent-primary); color:#fff; border:none; font-weight:600; min-width:5.5rem; }
.lb-fc-btn.lb-fc-flip:hover:not(:disabled) { filter:brightness(1.06); }

/* ── v9: Diagrams / flowcharts ── */
.lb-diagram-canvas { display:block; min-height:auto; max-width:100%; }
.lb-diagram-svg-wrap { width:auto; max-width:100%; display:block; overflow:visible; margin:0 auto; padding:.35rem; box-sizing:border-box; -webkit-overflow-scrolling:touch; }
.lb-diagram-svg-wrap svg, .lb-mermaid-svg { max-width:100%; height:auto; display:block; margin:0 auto; }
.lb-transcript-diagram .lb-diagram-rendered svg { max-width:100% !important; max-height:none !important; }
.lb-transcript-diagram .lb-diagram-canvas { min-height:min(42vh, 360px); }
.lb-transcript-diagram .lb-diagram-rendered svg .node rect,
.lb-transcript-diagram .lb-diagram-rendered svg .node polygon,
.lb-transcript-diagram .lb-diagram-rendered svg .cluster rect {
    fill:#1e3a5f !important;
    stroke:#3b82f6 !important;
}
.lb-transcript-diagram .lb-diagram-rendered svg .nodeLabel,
.lb-transcript-diagram .lb-diagram-rendered svg .label,
.lb-transcript-diagram .lb-diagram-rendered svg text {
    fill:#f1f5f9 !important;
}
.lb-visual-flow { max-width:520px; margin:0 auto; }
.lb-flow-track { display:flex; flex-direction:column; align-items:center; gap:.1rem; }
.lb-flow-node { width:100%; max-width:min(100%, 300px); }
.lb-flow-node-inner { text-align:left; padding:.5rem .7rem; border-radius:.65rem; background:var(--bg-secondary); border:1px solid var(--border-color); box-shadow:0 2px 8px rgba(0,0,0,.06); }
.lb-flow-connector { color:var(--accent-primary); padding:.05rem 0; font-size:.6rem; }

/* ── v9: Check understanding answers ── */
.lb-check-answer-label { font-size:.7rem; font-weight:800; text-transform:uppercase; letter-spacing:.06em; color:var(--success-600, #059669); margin-bottom:.5rem; }
.lb-check-answer-body { font-size:.9375rem; line-height:1.65; color:var(--text-primary); }
.lb-check-hint-line { margin:.75rem 0 0; padding:.65rem .85rem; border-radius:.65rem; background:rgba(245,158,11,.08); border:1px solid rgba(245,158,11,.25); font-size:.8125rem; color:var(--text-secondary); }

/* ── v9: Lesson shell responsive ── */
.lb-lesson-shell { width:100%; max-width:100%; min-width:0; box-sizing:border-box; }
.lb-block { margin-bottom:1.25rem; min-width:0; max-width:100%; box-sizing:border-box; overflow-x:clip; overflow-y:visible; }
.lb-block:has(.lb-workspace-wrap) { overflow:visible; padding-bottom:1.5rem; }
.lb-activity { min-width:0; max-width:100%; box-sizing:border-box; overflow:visible; }
.lb-project-workspace { overflow:visible; padding-bottom:1.15rem; }
.lb-workspace-wrap { width:100%; max-width:100%; margin-top:1rem; margin-bottom:.15rem; padding-top:1rem; padding-bottom:.25rem; border-top:1px dashed var(--border-color); box-sizing:border-box; }
.lb-workspace-label { display:block; font-size:.7rem; font-weight:700; text-transform:uppercase; letter-spacing:.05em; color:var(--text-muted); margin:0 0 .5rem; }
.lb-workspace-input { display:block; width:100%; max-width:100%; box-sizing:border-box; margin:0; padding:.85rem 1rem; border:1px solid var(--border-color); border-radius:var(--radius-lg); font-family:inherit; font-size:clamp(.875rem, 2.5vw, 1rem); line-height:1.55; resize:vertical; min-height:7rem; max-height:20rem; background:var(--bg-card, var(--bg-secondary)); color:var(--text-primary); }
.lb-workspace-input:focus { outline:none; border-color:var(--accent-primary); box-shadow:0 0 0 3px rgba(37,99,235,.12); }
.lb-check-project .lb-check-reveal { display:block; width:100%; max-width:100%; box-sizing:border-box; }

/* Profile analysis bars (funnel) */
.profile-bars { display:flex; flex-direction:column; gap:.85rem; margin:1.25rem 0; }
.profile-bar-row { display:flex; flex-direction:column; gap:.35rem; }
.profile-bar-header { display:flex; justify-content:space-between; align-items:center; font-size:.8125rem; color:var(--text-secondary); }
.profile-bar-header strong { font-size:.875rem; color:var(--text-primary); }
.profile-bar-track { height:8px; border-radius:999px; background:var(--border-color); overflow:hidden; }
.profile-bar-fill { height:100%; border-radius:999px; background:linear-gradient(90deg, var(--accent-primary), #7c3aed); transition:width .6s ease; }
.profile-bar-fill.theme-amber { background:linear-gradient(90deg, #f59e0b, #f97316); }
.profile-bar-fill.theme-green { background:linear-gradient(90deg, #10b981, #059669); }
.lo-fit-banner { display:flex; gap:1rem; align-items:center; padding:1rem 1.15rem; border-radius:var(--radius-lg); margin:1rem 0; border:1px solid var(--border-color); background:var(--bg-secondary); }
.lo-fit-banner.lo-fit-strong { border-color:rgba(16,185,129,.35); background:rgba(16,185,129,.08); }
.lo-fit-banner.lo-fit-moderate { border-color:rgba(245,158,11,.35); background:rgba(245,158,11,.08); }
.lo-fit-score { font-size:1.75rem; font-weight:800; line-height:1; color:var(--accent-primary); min-width:3.5rem; text-align:center; }
.lo-fit-banner.lo-fit-strong .lo-fit-score { color:#059669; }
.profile-auto-settings { display:flex; flex-wrap:wrap; gap:.5rem; margin:.75rem 0 1rem; }
.profile-auto-pill { display:inline-flex; align-items:center; gap:.35rem; font-size:.75rem; font-weight:700; padding:.35rem .65rem; border-radius:999px; background:rgba(37,99,235,.12); color:var(--accent-primary); border:1px solid rgba(37,99,235,.25); }
.discovery-counter { font-size:.75rem; font-weight:700; color:var(--text-muted); text-transform:uppercase; letter-spacing:.05em; margin-bottom:.65rem; }

@media (max-width:768px) {
    .lb-flashcards-premium { padding:.85rem; margin:1rem 0; }
    .lb-fc-stage { min-height:10.5rem; }
    .lb-fc-inner { min-height:10.5rem; }
    .lb-fc-front .lb-fc-text, .lb-fc-back .lb-fc-text { font-size:.9rem; }
    .lb-fc-nav { gap:.4rem; }
    .lb-fc-btn { flex:1; min-height:44px; }
    .lb-diagram-canvas { padding:.65rem .45rem; min-height:auto; }
    .lb-diagram-canvas-tall { max-height:min(72vh, 640px); }
    .lb-workspace-input { min-height:6.5rem; }
    .lb-activity { padding:.85rem 1rem; }
    .lb-flow-node { max-width:100%; }
    .lo-fit-banner { flex-direction:column; text-align:center; }
    .lb-compare-card-cells { grid-template-columns:1fr; }
    .lb-compare-card-cells .lb-compare-side-0 { border-right:0; border-bottom:1px solid var(--border-color); }
    .lb-vs-hero { flex-direction:column; gap:.5rem; }
    .lb-video-embed iframe { min-height:200px; }
    #funnel-panel .funnel-step[data-step="lesson"] .lesson-content { max-height:min(62vh,600px); }
    .lb-check-premium { padding:1rem; }
}

@media (max-width:480px) {
    .lb-fc-body { padding:.75rem .85rem; }
    .lb-fc-top { padding:.5rem .75rem; }
    .lb-flow-node { max-width:100%; }
    .lb-block-title { font-size:.95rem; }
}