.blt-content-depth{padding:28px 0 8px}.blt-content-depth .wrap{display:grid;gap:16px}.blt-content-depth-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.blt-content-card{background:var(--surface,#fff);border:1px solid var(--line,#dfe5ef);border-radius:16px;padding:20px;box-shadow:0 8px 24px rgba(20,35,70,.04)}.blt-content-card h2,.blt-content-card h3{margin:0 0 10px}.blt-content-card p{margin:8px 0;line-height:1.75}.blt-content-card ul{margin:8px 0 0;padding-left:1.2em}.blt-content-card li{margin:.45em 0;line-height:1.65}.blt-content-meta{font-size:.88rem;color:var(--muted,#657086)}.blt-content-guide{display:flex;align-items:center;justify-content:space-between;gap:16px}.blt-content-guide a{font-weight:700}.blt-guide-index-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.blt-guide-index-card{display:block;text-decoration:none;color:inherit;background:var(--surface,#fff);border:1px solid var(--line,#dfe5ef);border-radius:16px;padding:20px;min-height:180px}.blt-guide-index-card:hover{transform:translateY(-1px);box-shadow:0 10px 28px rgba(20,35,70,.07)}.blt-guide-index-card h2,.blt-guide-index-card h3{margin:0 0 8px}.blt-guide-index-card p{line-height:1.7}.blt-article{max-width:900px}.blt-article-section{margin:0 0 18px;background:var(--surface,#fff);border:1px solid var(--line,#dfe5ef);border-radius:16px;padding:22px}.blt-article-section h2{margin-top:0}.blt-article-section p,.blt-article-section li{line-height:1.8}.blt-article-note{border-left:4px solid #315ee8;padding:12px 16px;background:color-mix(in srgb,#315ee8 6%,transparent);border-radius:8px}.blt-source-list a{word-break:break-all}.blt-about-principles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.blt-home-guides{padding:28px 0 50px}
@media(max-width:800px){.blt-content-depth-grid,.blt-guide-index-grid,.blt-about-principles{grid-template-columns:1fr}.blt-content-guide{align-items:flex-start;flex-direction:column}}