* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Georgia, Cambria, "Times New Roman", Times, serif;
    color: #222;
    font-size: 16px;
    background: #fff;
    line-height: 1.65;
}

a {
    color: #0b5cad;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.14em;
}

a:hover { text-decoration-thickness: 2px; }

.page {
    max-width: 980px;
    margin: 0 auto;
    padding: 36px 24px 60px;
}

.site-header {
    display: grid;
    gap: 16px;
    padding-bottom: 20px;
    margin-bottom: 28px;
    border-bottom: 1px solid #dcdcdc;
}

h1 { 
    margin: 0;
    font-size: clamp(2.1rem, 4vw, 3.2rem);
    line-height: 1.1;
    letter-spacing: -0.03em;
}

h1, h2, h3 {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-weight: 600;
    color: #111;
}

h2 {
    margin: 0 0 12px;
    font-size: 1.1rem;
    letter-spacing: -0.01em;
}

.lede {
    margin: 12px 0 0;
    color: #555;
    font-size: 1.02rem;
}

.site-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    padding-top: 2px;
}

.site-nav a {
    padding: 0;
    text-decoration: underline;
    text-underline-offset: 0.16em;
    color: #1f3552;
}

.card {
    padding: 0 0 24px;
    margin: 0 0 24px;
    border-bottom: 1px solid #ece7dd;
}

.card p {
    margin: 0 0 12px;
}

.link-list,
.tag-list {
    margin: 0;
    padding-left: 1.2rem;
}
.list--tight li {
    margin-top: 0;
    line-height: 1.25;
}

.list--tight li + li {
    margin-top: 0.08rem;
}

.list--normal li {
    margin-top: 0.35rem;
    line-height: 1.45;
}

.list--spacious li {
    margin-top: 0.35rem;
    line-height: 1.6;
}

.link-list li + li { margin-top: 0.1rem; }

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    padding-left: 0;
    margin-top: 14px;
}

.tag-list li {
    border: 1px solid #d3d3d3;
    background: #fafafa;
    border-radius: 4px;
    padding: 5px 10px;
    font-size: 1rem;
}

.photo {
    display: block;
    width: 100%;
    max-width: 240px;
    height: auto;
    border: 1px solid #d0d0d0;
    background: #fff;
    padding: 4px;
    box-shadow: 0 10px 24px rgba(34, 28, 20, 0.08);
}

.cluster-thumb {
    margin-top: 18px;
    padding-top: 18px;
    border-top: 1px solid #f0f0f0;
}

.cluster-layout {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 24px;
    margin-top: 16px;
}

.cluster-gallery { display: flex; align-items: flex-start; }

.cluster-gallery img {
    width: 100%;
    max-width: 180px;
    height: auto;
    border: 1px solid #d0d0d0;
    padding: 4px;
    box-shadow: 0 10px 24px rgba(34, 28, 20, 0.08);
    display: block;
    cursor: pointer;
}

.cluster-specs h3 { margin: 0 0 12px; font-size: 1rem; }
.cluster-specs ul { margin: 0; padding-left: 1.2rem; }

.link-list li {
    font-size: 1rem;
    margin: 0;
    padding: 0;
    line-height: 1.25;
}

.figure-note { color: #666; font-size: 0.95rem; margin-top: 8px; }
.footer-line { margin: 0; color: #444; }

.columns { display: grid; gap: 18px; grid-template-columns: repeat(12, 1fr); }
.col-7 { grid-column: span 7; }
.col-5 { grid-column: span 5; }
.card.columns { align-items: start; }

@media (max-width: 760px) {
    .page { padding: 20px 14px 40px; }
    .columns,
    .site-header { grid-template-columns: 1fr; }
    .col-7, .col-5 { grid-column: auto; }
    .cluster-layout { grid-template-columns: 1fr; }
}