/*
Theme Name: SEO AI Child
Theme URI: https://example.com/seo-ai-child
Description: GeneratePress 的轻量 SEO 首页子主题。
Author: SEO AI
Template: generatepress
Version: 1.1.0
Text Domain: seo-ai-child
*/

:root {
	--seo-accent: #1769aa;
	--seo-accent-dark: #0e466f;
	--seo-text: #1f2933;
	--seo-muted: #5f6c7b;
	--seo-border: #e5e7eb;
	--seo-surface: #f6f9fc;
}

.seo-home { color: var(--seo-text); }
.seo-home__intro .inside-article { padding: 0; }
.seo-home__intro { background: linear-gradient(135deg, #eef7ff, #fff); border-bottom: 1px solid var(--seo-border); padding: 1.75rem 1.5rem; text-align: center; }
.seo-home__intro h1 { color: var(--seo-accent-dark); font-size: clamp(2rem, 5vw, 3.25rem); margin: 0 0 .75rem; }
.seo-home__description { color: var(--seo-muted); font-size: 1.1rem; margin: 0 auto; max-width: 48rem; }
.seo-home__content { margin: 0 auto; max-width: 1100px; padding: 2.5rem 1.5rem; }
.seo-home__section { margin-bottom: 2.75rem; }
.seo-home__section h2 { border-left: 4px solid var(--seo-accent); color: var(--seo-accent-dark); font-size: 1.5rem; margin: 0 0 1.25rem; padding-left: .75rem; }
.seo-home__categories { display: flex; flex-wrap: wrap; gap: .65rem; list-style: none; margin: 0; padding: 0; }
.seo-home__categories a { background: var(--seo-surface); border: 1px solid var(--seo-border); border-radius: 999px; color: var(--seo-accent-dark); display: block; padding: .55rem 1rem; text-decoration: none; transition: background .2s, border-color .2s; }
.seo-home__categories a:hover, .seo-home__categories a:focus { background: #e4f2ff; border-color: var(--seo-accent); }
.seo-home__posts { display: grid; gap: 1rem; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.seo-home__post { border: 1px solid var(--seo-border); border-radius: .35rem; padding: 1.25rem; }
.seo-home__post h3 { font-size: 1.15rem; line-height: 1.45; margin: 0 0 .5rem; }
.seo-home__post h3 a { color: var(--seo-accent-dark); text-decoration: none; }
.seo-home__post h3 a:hover, .seo-home__post h3 a:focus { color: var(--seo-accent); text-decoration: underline; }
.seo-home__meta { color: var(--seo-muted); font-size: .875rem; margin: 0 0 .7rem; }
.seo-home__excerpt { color: var(--seo-muted); font-size: .95rem; margin: 0; }
.seo-card-image { display: block; margin: 0 0 .8rem; }
.seo-card-image img { aspect-ratio: 16 / 9; border-radius: .25rem; display: block; height: auto; object-fit: cover; width: 100%; }
.seo-home__empty { color: var(--seo-muted); }
.seo-home__category-grid { display: grid; gap: 1rem; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.seo-home__category-card { border: 1px solid var(--seo-border); border-radius: .35rem; padding: 1.15rem; }
.seo-home__category-card h3 { font-size: 1.15rem; margin: 0 0 .45rem; }
.seo-home__category-card h3 a, .seo-home__recommendation h3 a { color: var(--seo-accent-dark); text-decoration: none; }
.seo-home__category-card p { color: var(--seo-muted); font-size: .92rem; line-height: 1.6; margin: 0 0 .65rem; }
.seo-home__category-card span { color: var(--seo-muted); font-size: .82rem; }
.seo-home__recommendations { display: grid; gap: 1rem; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.seo-home__recommendation { background: var(--seo-surface); padding: 1rem 1.2rem; }
.seo-home__recommendation-posts { display: grid; gap: .9rem; }
.seo-home__recommendation-posts article { border-top: 1px solid var(--seo-border); padding-top: .8rem; }
.seo-home__recommendation-posts article:first-child { border-top: 0; padding-top: 0; }
.seo-home__recommendation-posts h4 { font-size: 1rem; line-height: 1.45; margin: 0 0 .3rem; }
.seo-home__recommendation-posts h4 a { color: var(--seo-accent-dark); text-decoration: none; }
.seo-home__search-form { display: flex; gap: .6rem; max-width: 42rem; }
.seo-home__search-form input { border: 1px solid var(--seo-border); border-radius: .25rem; flex: 1; min-width: 0; padding: .7rem .8rem; }
.seo-home__search-form button { background: var(--seo-accent); border: 0; border-radius: .25rem; color: #fff; cursor: pointer; padding: .7rem 1.25rem; }
.seo-home__recommendation h3 { font-size: 1.1rem; margin: 0 0 .5rem; }
.seo-home__recommendation ul { margin: 0; padding-left: 1.2rem; }
.seo-home__recommendation li { margin: .35rem 0; }
.seo-home__recommendation a { color: var(--seo-accent-dark); }
@media (max-width: 768px) { .seo-home__intro { padding: 1.5rem 1rem; } .seo-home__content { padding: 2rem 1rem; } .seo-home__posts, .seo-home__category-grid, .seo-home__recommendations { grid-template-columns: 1fr; } .seo-home__search-form { flex-direction: column; } }

/* Article styles stay scoped so archives and the home page retain their layout. */
.single-post .content-area { min-width: 0; }
.seo-article { overflow-wrap: anywhere; }
.seo-breadcrumb { font-size: .875rem; margin-bottom: 1.75rem; }
.seo-breadcrumb ol { display: flex; flex-wrap: wrap; gap: .4rem; list-style: none; margin: 0; }
.seo-breadcrumb li + li::before { content: "/"; padding-right: .4rem; color: #64748b; }
.seo-article .entry-title { font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.3; margin-bottom: 1rem; }
.seo-article-meta { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; color: #526171; font-size: .875rem; }
.seo-article-summary { margin-top: 1.5rem; padding: 1.25rem; background: #f6f9fc; border-left: 3px solid #1769aa; }
.seo-article-featured-image { margin: 1.5rem 0; }
.seo-article-featured-image img { border-radius: .3rem; display: block; height: auto; max-width: 100%; width: 100%; }
.seo-article-summary p { margin: .5rem 0 0; }
.seo-article .entry-content { line-height: 1.85; }
.seo-article .entry-content h2 { margin-top: 2rem; font-size: 1.65rem; }
.seo-article .entry-content h3 { margin-top: 1.5rem; font-size: 1.3rem; }
.seo-article .entry-content img { max-width: 100%; height: auto; }
.seo-article .entry-content table { display: block; max-width: 100%; overflow-x: auto; border-collapse: collapse; }
.seo-article .entry-content th, .seo-article .entry-content td { padding: .7rem; border: 1px solid #dce3eb; min-width: 7rem; }
.seo-article .entry-content th { background: #f6f9fc; }
.seo-article .entry-content pre { overflow-x: auto; }
.seo-article-footer, .seo-related { margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid #e5e7eb; }
.seo-related h2 { font-size: 1.5rem; }
.seo-related ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; list-style: none; margin: 0; }
.seo-related a { display: block; padding: 1rem; background: #f6f9fc; height: 100%; }
.seo-article a:focus-visible { outline: 2px solid #1769aa; outline-offset: 3px; }
@media (max-width: 768px) { .seo-related ul { grid-template-columns: 1fr; } .seo-article .inside-article { padding: 1.25rem; } }

.seo-archive-header { margin-bottom: 2rem; }
.seo-archive-header h1 { color: var(--seo-accent-dark); font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0 0 .75rem; }
.seo-archive-description { color: var(--seo-muted); line-height: 1.75; max-width: 48rem; }
.seo-archive-list { display: grid; gap: 1rem; }
.seo-archive-card { border: 1px solid var(--seo-border); border-radius: .35rem; padding: 1.25rem; }
.seo-archive-card .seo-card-image { max-width: 22rem; }
.seo-archive-card__title { font-size: 1.3rem; line-height: 1.45; margin: 0 0 .35rem; }
.seo-archive-card__title a { color: var(--seo-accent-dark); text-decoration: none; }
.seo-archive-card__title a:hover, .seo-archive-card__title a:focus { color: var(--seo-accent); text-decoration: underline; }
.seo-archive-card__meta { color: var(--seo-muted); font-size: .875rem; margin: 0 0 .7rem; }
.seo-archive-card__excerpt { color: var(--seo-muted); line-height: 1.7; }
.seo-archive-card__excerpt p { margin: 0; }
.seo-archive-list + .navigation.pagination { margin-top: 2rem; }