:root {
        --navy: #0f2341;
        --burgundy: #9e1f2d;
        --tan: #d6b588;
        --light: #f4f4f2;
        --white: #ffffff;
        --ink: #111111;
        --text: #2a2f36;
        --muted: #687281;
        --border: #d8dde3;
        --shadow: 0 20px 50px rgba(15, 35, 65, 0.08);
        --radius-lg: 28px;
        --radius-md: 18px;
        --radius-sm: 12px;
        --container: 1180px;
    }

    *, ::before, ::after {
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0px;
        font-family: Inter, Arial, sans-serif;
        color: var(--text);
        background: var(--light);
        line-height: 1.6;
    }

    img {
        max-width: 100%;
        display: block;
    }

    a {
        color: inherit;
        text-decoration: none;
    }

    .container {
        width: min(var(--container), calc(100% - 2rem));
        margin: 0px auto;
    }

    .site-header {
        position: sticky;
        top: 0px;
        z-index: 50;
        backdrop-filter: blur(10px);
        background: rgba(244, 244, 242, 0.9);
        border-bottom-width: 1px;
        border-bottom-style: solid;
        border-bottom-color: rgba(15, 35, 65, 0.08);
    }

    .nav {
        min-height: 82px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 1.5rem;
    }

    .brand {
        display: flex;
        align-items: center;
        gap: 1rem;
    }

    .brand-mark {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-width: 112px;
        padding: 0.7rem 1rem;
        background: var(--navy);
        color: var(--white);
        font-weight: 800;
        font-style: italic;
        letter-spacing: -0.03em;
        border-radius: 10px;
    }

    .brand-text {
        display: flex;
        flex-direction: column;
        line-height: 1.2;
    }

    .brand-text strong {
        font-size: 1rem;
        color: var(--ink);
    }

    .brand-text span {
        color: var(--muted);
        font-size: 0.92rem;
    }

    .nav-links {
        display: flex;
        align-items: center;
        gap: 1rem;
    }

    .nav-links > a:not(.button) {
        color: var(--navy);
        font-weight: 600;
    }

    .hero {
        background: linear-gradient(135deg, rgb(244, 244, 242) 0%, rgb(255, 255, 255) 48%, rgb(244, 244, 242) 100%);
        padding: 4.5rem 0px 4rem;
    }

    .hero-grid {
        display: grid;
        grid-template-columns: 1.15fr 0.85fr;
        gap: 3rem;
        align-items: flex-start;
    }

    .eyebrow, .section-label {
        display: inline-block;
        margin: 0px 0px 1rem;
        font-weight: 700;
        font-size: 1.2rem;
        letter-spacing: 0.18em;
        text-transform: uppercase;
        color: var(--blue);
    }

    .light-label {
        color: rgba(255, 255, 255, 0.76);
    }

    h1, h2, h3 {
        color: var(--ink);
        margin-top: 0px;
        line-height: 1.1;
    }

    h1 {
        font-size: clamp(2.6rem, 5vw, 4.8rem);
        margin-bottom: 1.2rem;
    }

    h2 {
        font-size: clamp(2rem, 3.8vw, 3.2rem);
        margin-bottom: 1rem;
    }

    h3 {
        font-size: 1.35rem;
        margin-bottom: 0.7rem;
    }

    .hero-text, .section-intro {
        font-size: 1.12rem;
        color: var(--text);
        max-width: 48rem;
    }

    .hero-actions, .book-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 0.85rem;
        margin-top: 1.8rem;
    }

    .button {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-height: 48px;
        padding: 0.8rem 1.2rem;
        border-radius: 999px;
        font-weight: 700;
        transition: transform 0.2s, opacity 0.2s, background 0.2s;
    }

    .button:hover {
        transform: translateY(-1px);
    }

    .button-primary {
        background: var(--navy);
        color: var(--white);
    }

    .button-secondary {
        background: var(--white);
        color: var(--navy);
        border: 1px solid var(--border);
    }

    .button-accent {
        background: var(--tan);
        color: var(--navy);
    }

    .button-outline {
        border: 1px solid var(--border);
        background: var(--white);
        color: var(--navy);
    }

    .button-light {
        background: var(--white);
        color: var(--navy);
    }

    .highlights {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 0.85rem;
        margin-top: 2rem;
    }

    .highlight-card, .feature-card, .faq-item {
        background: var(--white);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow);
    }

    .highlight-card {
        padding: 1rem;
        font-size: 0.96rem;
    }

    .hero-covers {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .hero-covers img, .book-cover, .author-photo img {
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow);
        border: 1px solid rgba(15, 35, 65, 0.08);
    }

    .section {
        padding: 5.2rem 0px;
    }

    .section-alt {
        background: var(--white);
        border-top-width: 1px;
        border-top-style: solid;
        border-top-color: rgba(15, 35, 65, 0.06);
        border-bottom-width: 1px;
        border-bottom-style: solid;
        border-bottom-color: rgba(15, 35, 65, 0.06);
    }

    .book-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1.7rem;
        margin-top: 2.4rem;
    }

    .book-card {
        display: grid;
        grid-template-columns: 240px 1fr;
        background: var(--white);
        border-radius: var(--radius-lg);
        overflow: hidden;
        border: 1px solid var(--border);
        box-shadow: var(--shadow);
    }

    .book-cover {
        height: 100%;
        width: 100%;
        object-fit: cover;
        border-radius: 0px;
        box-shadow: none;
        border: 0px;
    }

    .book-body {
        padding: 2rem;
    }

    .book-audience {
        margin: 0px 0px 0.6rem;
        color: var(--navy);
        font-size: 0.82rem;
        font-weight: 700;
        letter-spacing: 0.15em;
        text-transform: uppercase;
    }

    .book-subtitle {
        color: var(--ink);
        font-weight: 600;
    }

    .two-column {
        display: grid;
        grid-template-columns: 1.1fr 0.9fr;
        gap: 2rem;
        align-items: start;
    }

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

    .feature-card {
        padding: 1.5rem;
        background: var(--light);
        box-shadow: none;
    }

    .org-panel {
        background: var(--navy);
        color: var(--white);
        border-radius: 32px;
        padding: 2rem;
        box-shadow: var(--shadow);
    }

    .org-panel h3, .contact-panel h2 {
        color: var(--white);
    }

    .org-panel ul {
        padding-left: 1.2rem;
        margin: 1rem 0px 1.6rem;
    }

    .about-grid {
        display: grid;
        grid-template-columns: 0.82fr 1.18fr;
        gap: 2rem;
        align-items: center;
    }

    .author-photo img {
        width: 100%;
    }

    .faq-wrap {
        max-width: 920px;
    }

    .faq-list {
        display: grid;
        gap: 1rem;
        margin-top: 2rem;
    }

    .faq-item {
        padding: 1.5rem;
        box-shadow: none;
        background: var(--light);
    }

    .contact-section {
        background: linear-gradient(135deg, var(--navy) 0%, var(--navy) 100%);
    }

    .contact-panel {
        display: grid;
        grid-template-columns: 1.2fr 0.8fr;
        gap: 2rem;
        align-items: end;
        color: var(--white);
    }

    .contact-panel .section-label {
        color: rgba(255, 255, 255, 0.76);
    }

    .contact-box {
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.12);
        padding: 1.5rem;
        border-radius: var(--radius-lg);
        backdrop-filter: blur(8px);
    }

    .contact-box a {
        color: var(--white);
        text-decoration: underline;
        text-underline-offset: 2px;
    }

    @media (max-width: 1060px) {
      .hero-grid, .two-column, .about-grid, .contact-panel, .book-grid { grid-template-columns: 1fr; }
      .book-card { grid-template-columns: 220px 1fr; }
    }

    @media (max-width: 760px) {
      .brand-mark, .brand-text span { display: none; }
      .nav { flex-direction: column; align-items: flex-start; padding: 1rem 0px; }
      .nav-links { flex-wrap: wrap; }
      .highlights, .feature-grid, .hero-covers { grid-template-columns: 1fr; display: none; }
      .book-card { grid-template-columns: 1fr; max-width: 500px; margin: 0px auto; }
      .book-cover { max-height: 400px; width: 100%; border-bottom: 1px solid var(--border); }
      .book-body { padding: 1.5rem; }
      .book-actions { flex-direction: column; }
      .book-actions .button { width: 100%; }
      .hero { padding-top: 2rem; }
      .section { padding: 4rem 0px; }
    }