:root {
            --color-primary-dark: #1E2761;
            --color-primary-mid: #2C3E7E;
            --color-accent: #CADCFC;
            --color-accent-bright: #FFFFFF;
            --color-text-light: #E8EDF5;
            --color-text-dim: #A8B8D8;
            --font-display: 'Cormorant Garamond', serif;
            --font-body: 'Montserrat', sans-serif;
        }

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

        body {
            font-family: var(--font-body);
            background: var(--color-primary-dark);
            color: var(--color-text-light);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* Geometric pattern background */
        .pattern-bg {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: 
                linear-gradient(30deg, rgba(202, 220, 252, 0.03) 12%, transparent 12.5%, transparent 87%, rgba(202, 220, 252, 0.03) 87.5%, rgba(202, 220, 252, 0.03)),
                linear-gradient(150deg, rgba(202, 220, 252, 0.03) 12%, transparent 12.5%, transparent 87%, rgba(202, 220, 252, 0.03) 87.5%, rgba(202, 220, 252, 0.03)),
                linear-gradient(30deg, rgba(202, 220, 252, 0.03) 12%, transparent 12.5%, transparent 87%, rgba(202, 220, 252, 0.03) 87.5%, rgba(202, 220, 252, 0.03)),
                linear-gradient(150deg, rgba(202, 220, 252, 0.03) 12%, transparent 12.5%, transparent 87%, rgba(202, 220, 252, 0.03) 87.5%, rgba(202, 220, 252, 0.03));
            background-size: 80px 140px;
            background-position: 0 0, 0 0, 40px 70px, 40px 70px;
            pointer-events: none;
        }

        /* Accent bar */
        .accent-bar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-accent-bright), var(--color-accent));
            z-index: 1000;
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            padding: 6rem 2rem 2rem;
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-mid) 50%, var(--color-primary-dark) 100%);
        }

        .hero .pattern-bg {
            opacity: 1;
        }

        .hero-content {
            max-width: 1200px;
            text-align: center;
            z-index: 1;
            animation: fadeInUp 1.2s ease-out;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(40px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .overline {
            font-size: 0.85rem;
            letter-spacing: 0.25em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 2rem;
            font-weight: 600;
            animation: fadeInUp 1.2s ease-out 0.2s both;
        }

        h1 {
            font-family: var(--font-display);
            font-size: clamp(2.5rem, 8vw, 6rem);
            font-weight: 700;
            line-height: 1.1;
            margin-bottom: 1.5rem;
            color: var(--color-accent-bright);
            animation: fadeInUp 1.2s ease-out 0.4s both;
            letter-spacing: -1px;
        }

        .subtitle {
            font-size: clamp(1.1rem, 3vw, 1.8rem);
            font-family: var(--font-body);
            font-weight: 300;
            color: var(--color-accent);
            margin-bottom: 2.5rem;
            line-height: 1.4;
            animation: fadeInUp 1.2s ease-out 0.6s both;
            letter-spacing: 0.5px;
        }

        .author {
            font-size: 1.2rem;
            margin-bottom: 3rem;
            color: var(--color-accent);
            letter-spacing: 0.15em;
            animation: fadeInUp 1.2s ease-out 0.8s both;
            text-transform: uppercase;
            font-weight: 400;
        }

        .cta-group {
            display: flex;
            gap: 1.5rem;
            justify-content: center;
            flex-wrap: wrap;
            animation: fadeInUp 1.2s ease-out 1s both;
            margin-bottom: 4rem;
        }

        .btn {
            padding: 1rem 2.5rem;
            font-size: 1rem;
            font-weight: 600;
            text-decoration: none;
            border: 2px solid var(--color-accent);
            transition: all 0.3s ease;
            cursor: pointer;
            font-family: var(--font-body);
            letter-spacing: 0.05em;
            text-transform: uppercase;
            display: inline-block;
            position: relative;
            overflow: hidden;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: var(--color-accent);
            transition: left 0.3s ease;
            z-index: -1;
        }

        .btn-primary {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            z-index: 1;
        }

        .btn-primary:hover {
            background: transparent;
            color: var(--color-accent);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(202, 220, 252, 0.3);
        }

        .btn-secondary {
            background: transparent;
            color: var(--color-accent);
        }

        .btn-secondary:hover::before {
            left: 0;
        }

        .btn-secondary:hover {
            color: var(--color-primary-dark);
            transform: translateY(-2px);
        }

        .btn:focus-visible {
            outline: 2px solid var(--color-accent-bright);
            outline-offset: 3px;
        }

        /* AI Nodes decoration */
        .ai-nodes {
            position: absolute;
            bottom: 10%;
            left: 0;
            right: 0;
            height: 300px;
            opacity: 0.15;
            pointer-events: none;
        }

        .node {
            position: absolute;
            width: 12px;
            height: 12px;
            background: var(--color-accent);
            border-radius: 50%;
            box-shadow: 0 0 20px rgba(202, 220, 252, 0.5);
            animation: pulse 3s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 0.3; transform: scale(1); }
            50% { opacity: 0.6; transform: scale(1.2); }
        }

        .node:nth-child(1) { top: 50px; left: 15%; animation-delay: 0s; }
        .node:nth-child(2) { top: 80px; left: 35%; animation-delay: 0.5s; }
        .node:nth-child(3) { top: 120px; left: 60%; animation-delay: 1s; }
        .node:nth-child(4) { top: 150px; left: 25%; animation-delay: 1.5s; }
        .node:nth-child(5) { top: 180px; left: 70%; animation-delay: 2s; }
        .node:nth-child(6) { top: 220px; left: 40%; animation-delay: 2.5s; }
        .node:nth-child(7) { top: 250px; left: 80%; animation-delay: 3s; }

        /* Premise Section */
        .premise {
            padding: 8rem 2rem;
            background: linear-gradient(135deg, #1a2550 0%, #263865 100%);
            position: relative;
        }

        .premise::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
        }

        .container {
            max-width: 1000px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .section-title {
            font-family: var(--font-display);
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 700;
            margin-bottom: 3rem;
            text-align: center;
            color: var(--color-accent-bright);
        }

        .premise-text {
            font-size: 1.4rem;
            line-height: 1.8;
            text-align: center;
            color: var(--color-text-light);
            font-weight: 300;
            margin-bottom: 2rem;
        }

        .premise-highlight {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Key Insights */
        .insights {
            padding: 8rem 2rem;
            background: var(--color-primary-dark);
            position: relative;
        }

        .insights::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
        }

        .insights-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2.5rem;
            margin-top: 4rem;
            position: relative;
            z-index: 1;
        }

        .insight-card {
            border: 1px solid rgba(202, 220, 252, 0.2);
            padding: 2.5rem 2rem;
            position: relative;
            transition: all 0.4s ease;
            background: rgba(202, 220, 252, 0.03);
        }

        .insight-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--color-accent);
            transition: width 0.4s ease;
        }

        .insight-card:hover::before {
            width: 100%;
        }

        .insight-card:hover {
            border-color: var(--color-accent);
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(202, 220, 252, 0.1);
        }

        .insight-number {
            font-family: var(--font-display);
            font-size: 3rem;
            color: var(--color-accent);
            font-weight: 700;
            margin-bottom: 1rem;
            opacity: 0.4;
        }

        .insight-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--color-accent-bright);
        }

        .insight-text {
            color: var(--color-text-dim);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* Chapters Section */
        .chapters {
            padding: 8rem 2rem;
            background: linear-gradient(135deg, #1a2550 0%, var(--color-primary-mid) 100%);
            position: relative;
        }

        .chapters::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
        }

        .chapters-list {
            max-width: 1000px;
            margin: 4rem auto 0;
            list-style: none;
            position: relative;
            z-index: 1;
        }

        .chapter-item {
            padding: 1.5rem 2rem;
            border-bottom: 1px solid rgba(202, 220, 252, 0.15);
            transition: all 0.3s ease;
            cursor: pointer;
            position: relative;
        }

        .chapter-item::before {
            content: '\2192';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            color: var(--color-accent);
            font-size: 1.5rem;
            opacity: 0;
            transition: all 0.3s ease;
        }

        .chapter-item:hover {
            padding-left: 3rem;
            background: rgba(202, 220, 252, 0.05);
        }

        .chapter-item:hover::before {
            opacity: 1;
            left: 1rem;
        }

        .chapter-number {
            font-family: var(--font-body);
            font-size: 0.8rem;
            color: var(--color-accent);
            font-weight: 600;
            margin-bottom: 0.35rem;
            letter-spacing: 0.15em;
            text-transform: uppercase;
        }

        .chapter-title {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--color-accent-bright);
            margin-bottom: 0.35rem;
            line-height: 1.25;
            font-family: var(--font-display);
        }

        .chapter-desc {
            color: var(--color-text-dim);
            font-size: 0.9rem;
            line-height: 1.4;
        }

        /* Author Section */
        .author-section {
            padding: 8rem 2rem;
            background: var(--color-primary-dark);
            position: relative;
        }

        .author-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
        }

        .author-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
            gap: clamp(2.5rem, 6vw, 5rem);
            align-items: start;
            position: relative;
            z-index: 1;
        }

        .author-image-placeholder {
            width: 100%;
            aspect-ratio: 1;
            background: linear-gradient(135deg, rgba(202, 220, 252, 0.1) 0%, rgba(202, 220, 252, 0.05) 100%);
            border: 3px solid var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-display);
            font-size: 5rem;
            color: var(--color-accent);
            font-weight: 700;
            overflow: hidden;
            border-radius: 8px;
            padding: 0;
            position: sticky;
            top: 3rem;
        }

        .author-image {
            width: 100%;
            height: 100%;
            display: block;
            object-fit: cover;
        }

        .author-bio {
            max-width: 760px;
        }

        .author-bio h3 {
            font-family: var(--font-display);
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
            color: var(--color-accent-bright);
            font-weight: 700;
        }

        .author-credentials {
            font-size: 0.9rem;
            color: var(--color-accent);
            margin-bottom: 2rem;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        .author-bio p {
            color: var(--color-text-dim);
            line-height: 1.8;
            margin-bottom: 1.5rem;
            font-size: 1rem;
        }

        .author-bio strong {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* CTA Section */
        .final-cta {
            padding: 8rem 2rem;
            background: linear-gradient(135deg, #1a2550 0%, var(--color-primary-mid) 100%);
            text-align: center;
            position: relative;
        }

        .final-cta::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
        }

        .final-cta h2 {
            font-family: var(--font-display);
            font-size: clamp(2.5rem, 5vw, 4rem);
            margin-bottom: 1.5rem;
            color: var(--color-accent-bright);
            font-weight: 700;
            position: relative;
            z-index: 1;
        }

        .final-cta p {
            font-size: 1.2rem;
            color: var(--color-text-dim);
            margin-bottom: 3rem;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }

        /* Share Section */
        .share-section {
            position: relative;
            padding: 4.5rem 2rem 5rem;
            background: linear-gradient(180deg, rgba(26, 37, 80, 0.95) 0%, rgba(17, 23, 56, 0.98) 100%);
        }

        .share-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
        }

        .share-section .container {
            max-width: 980px;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .share-intro {
            max-width: 760px;
            margin: -0.5rem auto 1.8rem;
            color: var(--color-text-dim);
            line-height: 1.7;
        }

        .share-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.85rem;
        }

        .share-btn {
            min-width: 205px;
            text-transform: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.55rem;
        }

        .share-btn svg {
            width: 1rem;
            height: 1rem;
            flex: 0 0 1rem;
            fill: currentColor;
            display: block;
        }

        .share-btn-label {
            line-height: 1;
        }

        .share-status {
            margin-top: 1rem;
            min-height: 1.35rem;
            color: var(--color-accent);
            font-size: 0.92rem;
        }

        /* Footer */
        footer {
            padding: 3rem 2rem;
            background: #0f1530;
            text-align: center;
            border-top: 1px solid rgba(202, 220, 252, 0.2);
            position: relative;
        }

        footer p {
            color: var(--color-text-dim);
            font-size: 0.85rem;
            margin-bottom: 0.5rem;
        }

        .publisher-mark {
            margin-top: 1.5rem;
            font-size: 0.75rem;
            letter-spacing: 0.2em;
            color: var(--color-accent);
            text-transform: uppercase;
        }

        section[id] {
            scroll-margin-top: 2rem;
        }

        /* Responsive */
        @media (max-width: 968px) {
            .author-content {
                grid-template-columns: 1fr;
                gap: 3rem;
            }

            .author-image-placeholder {
                max-width: 300px;
                margin: 0 auto;
                position: static;
            }

            .author-bio {
                max-width: none;
            }
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 80vh;
            }

            .insights-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .chapter-item:hover {
                padding-left: 2rem;
            }

            .chapter-item:hover::before {
                left: 0.5rem;
            }

            .share-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .share-btn {
                width: 100%;
                min-width: 0;
            }
        }

        /* Scroll animations */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(202, 220, 252, 0.4);
            color: var(--color-accent);
        }

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

        /* Modal for Order Now */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.6);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 2000;
            padding: 2rem;
        }

        .modal-overlay.open {
            display: flex;
        }

        .modal {
            background: #0f1530;
            color: var(--color-text-light);
            border: 1px solid rgba(202,220,252,0.12);
            max-width: 700px;
            width: 100%;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: 0 30px 80px rgba(2,6,23,0.7);
            text-align: center;
        }

        .modal h3 {
            margin-bottom: 1rem;
            font-family: var(--font-display);
            color: var(--color-accent-bright);
            font-size: 1.25rem;
        }

        .modal p {
            color: var(--color-text-dim);
            margin-bottom: 1.5rem;
            line-height: 1.6;
        }

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

        .modal .btn {
            text-transform: none;
            padding: 0.6rem 1.25rem;
            font-size: 0.95rem;
        }

        .contact-modal {
            text-align: left;
            max-width: 760px;
        }

        .contact-modal .modal-header-note {
            margin-bottom: 1rem;
        }

        .contact-form {
            display: flex;
            flex-direction: column;
            gap: 0.85rem;
        }

        .contact-form .contact-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.8rem;
        }

        .contact-form label {
            display: flex;
            flex-direction: column;
            gap: 0.3rem;
            color: var(--color-text-dim);
            font-size: 0.82rem;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            font-weight: 600;
        }

        .contact-form input,
        .contact-form textarea {
            width: 100%;
            border-radius: 8px;
            border: 1px solid rgba(202, 220, 252, 0.25);
            background: rgba(17, 23, 56, 0.9);
            color: var(--color-text-light);
            font-family: var(--font-body);
            font-size: 0.95rem;
            padding: 0.65rem 0.8rem;
        }

        .contact-form textarea {
            min-height: 140px;
            resize: vertical;
            line-height: 1.6;
        }

        .contact-form input:focus-visible,
        .contact-form textarea:focus-visible {
            outline: 2px solid var(--color-accent-bright);
            outline-offset: 2px;
            border-color: transparent;
        }

        .contact-status {
            min-height: 1.3rem;
            color: var(--color-text-dim);
            font-size: 0.9rem;
            margin-top: -0.2rem;
        }

        .contact-honeypot {
            position: absolute;
            left: -100vw;
            top: auto;
            width: 1px;
            height: 1px;
            overflow: hidden;
        }

        .contact-modal .modal-actions {
            justify-content: flex-end;
        }

        @media (max-width: 760px) {
            .contact-form .contact-row {
                grid-template-columns: 1fr;
            }
        }