:root {
    --text: #1a1a1a;
    --muted: #6b6b6b;
    --border: #e8e8e8;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: 'Crimson Pro', serif;
    color: var(--text);
    background: #ffffff;
    line-height: 1.6;
}

.container {
    max-width: 920px;
    margin: 60px auto;
    padding: 0 24px;
}

header {
    text-align: center;
    margin-bottom: 60px;
}

.header-mark {
    width: 64px;
    aspect-ratio: 1 / 1;
    object-fit: contain;
    display: block;
    margin: 0 auto 18px auto;
}

header h1 {
    font-weight: 600;
    font-size: 2.4rem;
    margin-bottom: 12px;
}

.tagline {
    max-width: 600px;
    margin: 0 auto;
    color: var(--muted);
}

.book {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 40px;
    padding: 60px 0;
    border-top: 1px solid var(--border);
}

.book:first-of-type {
    border-top: none;
}

.book img {
    width: 100%;
    height: auto;
    display: block;
}

.book h2 {
    margin-top: 0;
    margin-bottom: 12px;
    font-weight: 600;
}

.book p {
    margin-bottom: 18px;
}

.links a {
    margin-right: 20px;
    text-decoration: none;
    color: var(--text);
    border-bottom: 1px solid transparent;
}

.links a:hover {
    border-bottom: 1px solid var(--text);
}

.author {
    margin-top: 80px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}

.author-grid {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 40px;
    align-items: start;
}

.author-image {
    width: 200px;
    aspect-ratio: 4 / 5;
    overflow: hidden;
}

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

.author-content h2 {
    margin-top: 0;
    margin-bottom: 14px;
}

footer {
    margin-top: 80px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.9rem;
    text-align: center;
}

@media (max-width: 820px) {
    .book {
        grid-template-columns: 1fr;
    }

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

    .author-image {
        width: 220px;
        margin-bottom: 20px;
    }
}