:root {
            --deep-red: #8B1A1A;
            --warm-red: #A62B2B;
            --gold: #D4A853;
            --gold-light: #E8C878;
            --cream: #FAF6F0;
            --charcoal: #2A2A2A;
            --text-dark: #1A1A1A;
            --text-medium: #4A4A4A;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Source Sans 3', sans-serif;
            font-weight: 400;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--cream);
        }

        h1, h2, h3, h4 {
            font-family: 'Cormorant Garamond', Georgia, serif;
            font-weight: 600;
            line-height: 1.2;
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            background: linear-gradient(135deg, var(--deep-red) 0%, var(--warm-red) 50%, #922222 100%);
            color: var(--cream);
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
            opacity: 0.03;
            pointer-events: none;
        }

        .hero-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 4rem 2rem;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content {
            animation: fadeInUp 1s ease-out;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero-tagline {
            font-family: 'Cormorant Garamond', Georgia, serif;
            font-size: 1.1rem;
            font-weight: 500;
            letter-spacing: 0.15em;
            text-transform: uppercase;
            color: var(--gold);
            margin-bottom: 1.5rem;
        }

        .hero h1 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--gold);
        }

        .hero-subtitle {
            font-family: 'Cormorant Garamond', Georgia, serif;
            font-size: clamp(1.25rem, 2.5vw, 1.75rem);
            font-weight: 400;
            font-style: italic;
            margin-bottom: 2rem;
            opacity: 0.95;
        }

        .hero-question {
            font-family: 'Cormorant Garamond', Georgia, serif;
            font-size: clamp(1.4rem, 2.5vw, 1.85rem);
            font-weight: 500;
            font-style: italic;
            line-height: 1.5;
            margin-bottom: 2rem;
            padding-left: 1.5rem;
            border-left: 3px solid var(--gold);
        }

        .hero-text {
            font-size: 1.1rem;
            line-height: 1.8;
            opacity: 0.9;
            margin-bottom: 2.5rem;
        }

        .cta-button {
            display: inline-block;
            background: var(--gold);
            color: var(--deep-red);
            font-family: 'Source Sans 3', sans-serif;
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            text-decoration: none;
            padding: 1rem 2.5rem;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .cta-button:hover {
            background: var(--gold-light);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }

        .hero-book {
            display: flex;
            justify-content: center;
            align-items: center;
            animation: fadeInUp 1s ease-out 0.3s both;
        }

        .book-cover {
            max-width: 380px;
            width: 100%;
            box-shadow: 0 25px 80px rgba(0,0,0,0.4), 0 10px 30px rgba(0,0,0,0.3);
            transform: perspective(1000px) rotateY(-5deg);
            transition: transform 0.4s ease;
        }

        .book-cover:hover {
            transform: perspective(1000px) rotateY(0deg) scale(1.02);
        }

        /* Section Styles */
        section {
            padding: 6rem 2rem;
        }

        .container {
            max-width: 900px;
            margin: 0 auto;
        }

        .container-wide {
            max-width: 1200px;
            margin: 0 auto;
        }

        .section-label {
            font-family: 'Source Sans 3', sans-serif;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.2em;
            text-transform: uppercase;
            color: var(--warm-red);
            margin-bottom: 1rem;
        }

        .section-title {
            font-size: clamp(2rem, 4vw, 3rem);
            color: var(--charcoal);
            margin-bottom: 2rem;
        }

        /* Opening Scenario Section */
        .scenario {
            background: var(--charcoal);
            color: var(--cream);
            position: relative;
        }

        .scenario::before {
            content: '"';
            font-family: 'Cormorant Garamond', Georgia, serif;
            font-size: 20rem;
            color: var(--warm-red);
            opacity: 0.15;
            position: absolute;
            top: -2rem;
            left: 2rem;
            line-height: 1;
            pointer-events: none;
        }

        .scenario-text {
            font-family: 'Cormorant Garamond', Georgia, serif;
            font-size: clamp(1.25rem, 2.5vw, 1.6rem);
            font-weight: 400;
            line-height: 1.9;
            position: relative;
            z-index: 1;
        }

        .scenario-text p {
            margin-bottom: 1.5rem;
        }

        .scenario-text em {
            color: var(--gold);
            font-style: normal;
        }

        .scenario-text strong {
            color: var(--gold-light);
            font-weight: 500;
        }

        /* About the Framework */
        .framework {
            background: var(--cream);
        }

        .framework-intro {
            font-family: 'Cormorant Garamond', Georgia, serif;
            font-size: 1.35rem;
            line-height: 1.9;
            color: var(--text-medium);
            margin-bottom: 3rem;
        }

        .framework-points {
            display: grid;
            gap: 2rem;
        }

        .framework-point {
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 1.5rem;
            align-items: start;
        }

        .framework-icon {
            width: 48px;
            height: 48px;
            background: var(--deep-red);
            color: var(--gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'Cormorant Garamond', Georgia, serif;
            font-size: 1.5rem;
            font-weight: 700;
        }

        .framework-point h3 {
            font-size: 1.35rem;
            color: var(--charcoal);
            margin-bottom: 0.5rem;
        }

        .framework-point p {
            color: var(--text-medium);
            line-height: 1.7;
        }

        /* Author Section */
        .author {
            background: linear-gradient(180deg, #F5F0E8 0%, var(--cream) 100%);
        }

        .author-grid {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 4rem;
            align-items: start;
        }

        .author-image-container {
            position: relative;
        }

        .author-image {
            width: 100%;
            aspect-ratio: 3/4;
            object-fit: cover;
            filter: grayscale(20%);
            box-shadow: 0 20px 60px rgba(0,0,0,0.15);
        }

        .author-image-container::after {
            content: '';
            position: absolute;
            bottom: -1rem;
            right: -1rem;
            width: 100%;
            height: 100%;
            border: 3px solid var(--gold);
            z-index: -1;
        }

        .author-content h2 {
            font-size: 2.5rem;
            color: var(--charcoal);
            margin-bottom: 0.5rem;
        }

        .author-credentials {
            font-family: 'Source Sans 3', sans-serif;
            font-size: 1rem;
            font-weight: 500;
            color: var(--warm-red);
            margin-bottom: 2rem;
        }

        .author-bio {
            font-family: 'Cormorant Garamond', Georgia, serif;
            font-size: 1.2rem;
            line-height: 1.9;
            color: var(--text-medium);
        }

        .author-bio p {
            margin-bottom: 1.5rem;
        }

        .author-highlight {
            background: var(--deep-red);
            color: var(--cream);
            padding: 2rem;
            margin-top: 2rem;
        }

        .author-highlight p {
            font-family: 'Cormorant Garamond', Georgia, serif;
            font-size: 1.15rem;
            font-style: italic;
            line-height: 1.8;
            margin: 0;
        }

        /* Audience Section */
        .audience {
            background: var(--charcoal);
            color: var(--cream);
        }

        .audience .section-label {
            color: var(--gold);
        }

        .audience .section-title {
            color: var(--cream);
        }

        .audience-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .audience-card {
            background: rgba(255,255,255,0.03);
            border: 1px solid rgba(255,255,255,0.08);
            padding: 2.5rem 2rem;
            transition: all 0.3s ease;
        }

        .audience-card:hover {
            background: rgba(255,255,255,0.06);
            border-color: var(--gold);
            transform: translateY(-5px);
        }

        .audience-card h3 {
            font-size: 1.4rem;
            color: var(--gold);
            margin-bottom: 1rem;
        }

        .audience-card p {
            font-size: 1rem;
            line-height: 1.7;
            opacity: 0.85;
        }

        /* Differentiator Section */
        .differentiator {
            background: var(--deep-red);
            color: var(--cream);
            text-align: center;
        }

        .differentiator-text {
            font-family: 'Cormorant Garamond', Georgia, serif;
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 500;
            line-height: 1.6;
            max-width: 800px;
            margin: 0 auto;
        }

        .differentiator-text strong {
            color: var(--gold);
            font-weight: 600;
        }

        /* Purchase Section */
        .purchase {
            background: var(--cream);
            text-align: center;
        }

        .purchase .section-title {
            margin-bottom: 1rem;
        }

        .purchase-subtitle {
            font-family: 'Cormorant Garamond', Georgia, serif;
            font-size: 1.25rem;
            color: var(--text-medium);
            margin-bottom: 3rem;
        }

        .purchase-options {
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .purchase-button {
            display: inline-flex;
            align-items: center;
            gap: 0.75rem;
            background: var(--charcoal);
            color: var(--cream);
            font-family: 'Source Sans 3', sans-serif;
            font-size: 1rem;
            font-weight: 500;
            text-decoration: none;
            padding: 1.25rem 2.5rem;
            transition: all 0.3s ease;
        }

        .purchase-button:hover {
            background: var(--deep-red);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
        }

        .purchase-button svg {
            width: 20px;
            height: 20px;
        }

        .isbn-info {
            margin-top: 2rem;
            font-size: 0.95rem;
            color: var(--text-medium);
        }

        /* Purchase Tabs */
        .purchase-tabs {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 2rem;
            border-bottom: 2px solid #E0D8CC;
            padding-bottom: 0;
        }

        .tab-button {
            background: transparent;
            border: none;
            font-family: 'Source Sans 3', sans-serif;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-medium);
            padding: 1rem 1.5rem;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            white-space: nowrap;
        }

        .tab-button::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--deep-red);
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .tab-button:hover {
            color: var(--deep-red);
        }

        .tab-button.active {
            color: var(--deep-red);
        }

        .tab-button.active::after {
            transform: scaleX(1);
        }

        .tab-content {
            display: none;
            animation: fadeIn 0.4s ease;
        }

        .tab-content.active {
            display: block;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .tab-inner {
            background: white;
            padding: 3rem;
            max-width: 500px;
            margin: 0 auto;
            box-shadow: 0 10px 40px rgba(0,0,0,0.08);
        }

        .tab-inner h3 {
            font-size: 1.5rem;
            color: var(--charcoal);
            margin-bottom: 1rem;
        }

        .tab-inner .price {
            font-family:  serif;
            font-size: 2.25rem;
            font-weight: 600;
            color: var(--deep-red);
            margin-bottom: 1rem;
        }

        .tab-inner .tab-description {
            font-size: 1rem;
            color: var(--text-medium);
            line-height: 1.7;
            margin-bottom: 2rem;
        }

        .tab-inner .purchase-button {
            display: inline-block;
            width: auto;
        }

        /* Footer */
        footer {
            background: var(--charcoal);
            color: var(--cream);
            padding: 3rem 2rem;
            text-align: center;
        }

        .footer-logo {
            font-family: 'Cormorant Garamond', Georgia, serif;
            font-size: 1.1rem;
            font-weight: 600;
            letter-spacing: 0.1em;
            margin-bottom: 1rem;
        }

        .footer-contact {
            font-size: 0.95rem;
            opacity: 0.7;
            margin-bottom: 0.5rem;
        }

        .footer-contact a {
            color: var(--gold);
            text-decoration: none;
        }

        .footer-contact a:hover {
            text-decoration: underline;
        }

        .footer-copyright {
            font-size: 0.85rem;
            opacity: 0.5;
            margin-top: 1.5rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-container {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .hero-question {
                border-left: none;
                padding-left: 0;
                border-top: 3px solid var(--gold);
                border-bottom: 3px solid var(--gold);
                padding: 1.5rem 0;
            }

            .hero-book {
                order: -1;
            }

            .book-cover {
                max-width: 300px;
                transform: none;
            }

            .author-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .author-image-container {
                max-width: 280px;
                margin: 0 auto;
            }

            .audience-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 640px) {
            section {
                padding: 4rem 1.5rem;
            }

            .framework-point {
                grid-template-columns: 1fr;
            }

            .framework-icon {
                width: 40px;
                height: 40px;
                font-size: 1.25rem;
            }

            .purchase-tabs {
                flex-direction: column;
                border-bottom: none;
                gap: 0;
            }

            .tab-button {
                border-bottom: 1px solid #E0D8CC;
                padding: 1rem;
            }

            .tab-button::after {
                display: none;
            }

            .tab-button.active {
                background: var(--deep-red);
                color: white;
            }

            .tab-inner {
                padding: 2rem 1.5rem;
            }
        }

        .overlay {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
}

.overlay-content {
  background: #fff;
  width: 90%;
  max-width: 500px;
  margin: 5% auto;
  padding: 20px;
  border-radius: 8px;
  position: relative;
}

.close-btn {
  position: absolute;
  right: 15px;
  top: 10px;
  font-size: 24px;
  cursor: pointer;
}

input, textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
}

button {
  padding: 10px 20px;
}