.blog-main { padding-top: 160px; padding-bottom: 100px; }
.blog-intro { max-width: 820px; margin-bottom: 56px; }
.blog-intro h1 { font-size: clamp(36px, 5vw, 66px); line-height: 1.12; letter-spacing: -.045em; margin: 20px 0 24px; }
.blog-intro > p { font-size: 18px; color: var(--text-muted); max-width: 65ch; }
.blog-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.blog-card { background: var(--surface); border: 1px solid var(--border-strong); border-radius: 20px; overflow: hidden; display: flex; flex-direction: column; transition: transform .2s, box-shadow .2s; }
.blog-card:hover { transform: translateY(-4px); box-shadow: 0 12px 30px rgba(var(--shadow-color), .1); }
.blog-card:focus-visible, .blog-back:focus-visible { outline: 3px solid var(--amber); outline-offset: 5px; }
.blog-card > img { width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; }
.blog-card-copy { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.blog-category { color: var(--amber-text); font-size: 12px; font-weight: 700; }
.blog-card h2 { font-size: 22px; line-height: 1.4; letter-spacing: -.025em; margin: 12px 0; }
.blog-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 28px; }
.blog-read { margin-top: auto; font-size: 14px; font-weight: 700; }
.blog-back { display: inline-block; font-size: 14px; font-weight: 600; margin-bottom: 28px; }
.blog-reading { max-width: 980px; padding-top: 140px; padding-bottom: 80px; }
.blog-article { font-size: 17px; line-height: 1.85; overflow-wrap: anywhere; }
.blog-article h1 { font-size: clamp(32px, 4.6vw, 54px); line-height: 1.2; letter-spacing: -.035em; margin: 14px 0 20px; }
.blog-article h3 { font-size: 25px; line-height: 1.4; margin: 36px 0 14px; letter-spacing: -.02em; }
.blog-article h4 { font-size: 18px; line-height: 1.5; margin: 24px 0 10px; }
.blog-article p { margin: 0 0 20px; }
.blog-article ul, .blog-article ol { padding-left: 24px; margin: 18px 0 28px; }
.blog-article li { margin-bottom: 10px; }
.blog-article a { color: var(--amber-text); text-decoration: underline; text-underline-offset: 3px; }
.blog-article .article-number { color: var(--amber-text); font-size: 13px; font-weight: 700; }
.blog-article .excerpt { font-size: 19px; color: var(--text-muted); }
.blog-article .meta { font-size: 13px; color: var(--text-muted); }
.blog-article .article-body > section { margin: 0 0 42px; }
.blog-article .hero { padding: 0; margin: 32px 0; min-height: 0; }
.blog-article figure img { width: 100%; height: auto; border-radius: 16px; }
.blog-article .diagram { margin: 40px 0; }
.blog-article .diagram > h3 { margin-top: 0; }
.blog-article .diagram img { background: #fff; }
.blog-article figcaption { font-size: 12px; color: var(--text-muted); margin-top: 10px; }
.blog-article .answer, .blog-article .cta, .blog-article .tool-note { padding: 26px; background: var(--surface); border: 1px solid var(--border-strong); border-radius: 16px; margin: 32px 0; }
.blog-article .answer { border-left: 4px solid var(--amber); }
.blog-article .answer h3, .blog-article .cta h3 { margin-top: 0; }
.blog-article .table-wrap { overflow-x: auto; border: 1px solid var(--border-strong); border-radius: 12px; margin: 24px 0; }
.blog-article table { border-collapse: collapse; width: 100%; min-width: 570px; font-size: 14px; }
.blog-article th, .blog-article td { text-align: left; vertical-align: top; padding: 14px; border-bottom: 1px solid var(--border-strong); }
.blog-article th { background: var(--surface); }
.blog-article blockquote { border-left: 3px solid var(--amber); padding: 20px 24px; margin: 28px 0; background: var(--surface); }
.blog-article .faq, .blog-article .sources, .blog-article .related { border-top: 1px solid var(--border-strong); margin-top: 40px; padding-top: 8px; }
.blog-article .faq-item { border-bottom: 1px solid var(--border-strong); }
.blog-article .faq-item + .faq-item { margin-top: 16px; }
.blog-article .faq-q { font-size: 18px; line-height: 1.5; padding-top: 22px; padding-bottom: 22px; }
.blog-article .faq-q:focus-visible { outline: 2px solid var(--amber); outline-offset: 4px; border-radius: 4px; }
.blog-article .faq-a { margin: 0; padding-bottom: 22px; font-size: 16px; line-height: 1.8; }
.blog-article .faq-a p:last-child { margin-bottom: 0; }
.blog-article .sources, .blog-article .related { font-size: 14px; }
.blog-article .detail { display: block; font-size: 12px; color: var(--text-muted); }
.blog-article .button { display: inline-block; padding: 12px 20px; background: var(--amber); color: var(--dark); text-decoration: none; font-weight: 700; border-radius: 8px; transition: transform .2s ease; }
.blog-article .button + .button { margin-left: 10px; }
.blog-article .button:hover { transform: translateY(-2px); }
.blog-article .button:active { transform: translateY(0); }
.blog-article .button:focus-visible { outline: 3px solid var(--amber); outline-offset: 4px; }
.blog-article .sources small { display: block; font-size: 12px; color: var(--text-muted); }
.blog-article .article-end { border-top: 1px solid var(--border-strong); padding-top: 24px; margin-top: 40px; }
.blog-page [aria-current="page"] { color: var(--amber-text); }
@media (max-width: 1000px) {
    .blog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
    .blog-main { padding-top: 120px; padding-bottom: 60px; }
    .blog-intro { margin-bottom: 32px; }
    .blog-intro > p { font-size: 16px; }
    .blog-grid { grid-template-columns: 1fr; gap: 24px; }
    .blog-card-copy { padding: 24px; }
    .blog-reading { padding-top: 110px; }
    .blog-article { font-size: 16px; }
    .blog-article .excerpt { font-size: 17px; }
    .blog-article h3 { font-size: 22px; }
    .blog-article .answer, .blog-article .cta, .blog-article .tool-note { padding: 20px; }
    .blog-article .button + .button { margin-left: 0; margin-top: 10px; }
}
@media (prefers-reduced-motion: reduce) {
    .blog-card { transition: none; }
    .blog-card:hover { transform: none; }
    .blog-article .button { transition: none; }
    .blog-article .button:hover { transform: none; }
}