/* === ホームのタイトル関連を全部強制非表示 === */
.home h1,
.home .page-title,
.home .inline-title,
.home header h1,
body.home .title,
body.home .content-header h1,
body.home .markdown-preview-section h1:first-child,
body.home [data-heading="index"],
h1 {
    display: none !important;
    visibility: hidden !important;
    height: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
    font-size: 0 !important;
}

/* 上部の余白を詰める */
.home header,
.home .content-header,
.home main > header,
.home .markdown {
    margin-top: 0 !important;
    padding-top: 0 !important;
}

/* === index.md のfrontmatter完全非表示（最強版） === */
.home .markdown-preview-section > :first-child,
.home .prose > :first-child,
.home article > *:first-child,
.home .content > *:first-child,
.home .markdown-body > *:first-child,
body.home .markdown > p:first-of-type,
body.home .markdown > div:first-of-type,
body.home .markdown > pre:first-of-type {
    display: none !important;
    visibility: hidden !important;
    height: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
    font-size: 0 !important;
    line-height: 0 !important;
}

/* タイトル文字列そのものを強制消去 */
.home :is(p, div, span, h1, h2):contains("セミナー in スペース 資料室"),
.home :is(p, div, span):contains("title:"),
.home :is(p, div, span):contains("slug:") {
    display: none !important;
}

/* 念のため */
.home header h1,
.home .page-title,
.home .inline-title,
.home .content-header h1 {
    display: none !important;
}


/* === 見出しフォントをゴシック体に統一（最優先） === */
h1, h2, h3, h4, h5, h6 {
    font-family: "Helvetica Neue", Arial, "Hiragino Sans", "Meiryo UI", "Yu Gothic", 
                 "Noto Sans JP", system-ui, sans-serif !important;
    font-weight: 600;           /* やや太めが読みやすい */
}

/* 特にH2を強調したい場合 */
h2 {
    font-size: 1.65rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* 本文とのバランス調整（必要なら） */
.prose h2, .markdown h2 {
    font-family: "Helvetica Neue", Arial, "Hiragino Sans", "Meiryo UI", 
                 "Yu Gothic", "Noto Sans JP", sans-serif !important;
}


/* 日本語をメイリオ優先に変更 */
:root {
    --font-body: "Meiryo", "メイリオ", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-heading: "Meiryo", "メイリオ", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* より強力に全体に適用したい場合 */
body,
h1, h2, h3, h4, h5, h6,
p, li, div, span {
    font-family: "Meiryo", "メイリオ", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif !important;
}

/* 日本語テキストに特化（より安全） */
:lang(ja), [lang="ja"] {
    font-family: "Meiryo", "メイリオ", "Hiragino Sans", "Yu Gothic", sans-serif !important;
}