:root { --emerald: #047857; --emerald-light: #d1fae5; --gray: #4b5563; --gray-light: #f3f4f6; --border: #e5e7eb; }
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Hiragino Sans', 'Yu Gothic', -apple-system, system-ui, sans-serif; color: #1f2937; line-height: 1.7; background: #fff; }
a { color: var(--emerald); text-decoration: none; }
a:hover { text-decoration: underline; }
.blog-header { background: var(--emerald); color: #fff; padding: 1.5rem 2rem; text-align: center; }
.blog-header a { color: #d1fae5; }
.blog-header h1 { font-size: 1.5rem; margin-bottom: 0.25rem; }
.blog-header .subtitle { font-size: 0.875rem; opacity: 0.9; }
.blog-back { display: inline-block; margin-top: 0.5rem; font-size: 0.875rem; }
.blog-content { max-width: 720px; margin: 2rem auto; padding: 0 1.5rem; }
.blog-content h1 { font-size: 2rem; margin: 1.5rem 0 0.5rem; color: #111827; }
.blog-content h2 { font-size: 1.5rem; margin: 2rem 0 0.75rem; color: #111827; border-bottom: 2px solid var(--emerald-light); padding-bottom: 0.25rem; }
.blog-content h3 { font-size: 1.25rem; margin: 1.5rem 0 0.5rem; color: #374151; }
.blog-content p { margin: 0.75rem 0; }
.blog-content ul, .blog-content ol { margin: 0.75rem 0 0.75rem 1.5rem; }
.blog-content li { margin: 0.25rem 0; }
.blog-content blockquote { border-left: 4px solid var(--emerald); padding: 0.5rem 1rem; margin: 1rem 0; background: var(--gray-light); border-radius: 0 0.5rem 0.5rem 0; font-style: italic; }
.blog-content table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.875rem; }
.blog-content th, .blog-content td { border: 1px solid var(--border); padding: 0.5rem 0.75rem; text-align: left; }
.blog-content th { background: var(--gray-light); font-weight: 700; }
.blog-content img { max-width: 100%; border-radius: 0.75rem; margin: 1rem 0; }
.blog-content iframe { width: 100%; height: 400px; border: 0; border-radius: 0.75rem; margin: 1rem 0; }
.blog-content .tip { background: #fef3c7; border: 1px solid #fcd34d; border-radius: 0.75rem; padding: 1rem; margin: 1rem 0; }
.blog-content .affiliate { background: var(--emerald-light); border: 1px solid var(--emerald); border-radius: 0.75rem; padding: 1rem; margin: 1.5rem 0; }
.blog-content .affiliate a { font-weight: 700; }
.blog-content .lang-toggle { position: sticky; top: 0; background: #fff; border-bottom: 1px solid var(--border); padding: 0.5rem 0; margin-bottom: 1rem; z-index: 10; }
.blog-content .lang-toggle button { background: var(--emerald); color: #fff; border: none; padding: 0.375rem 1rem; border-radius: 0.5rem; cursor: pointer; font-size: 0.875rem; font-weight: 600; }
.blog-content .lang-toggle button.active { background: #065f46; }
.blog-content .lang-en, .blog-content .lang-de { display: none; }
.blog-content .lang-en.active, .blog-content .lang-de.active { display: block; }
.blog-content .cta { background: linear-gradient(135deg, #4f46e5, #7c3aed); color: #fff; border-radius: 1rem; padding: 1.5rem; text-align: center; margin: 2rem 0; }
.blog-content .cta h3 { color: #fff; }
.blog-content .cta a { display: inline-block; background: #fff; color: #4f46e5; padding: 0.75rem 1.5rem; border-radius: 0.75rem; font-weight: 700; margin-top: 0.5rem; }
.blog-footer { text-align: center; padding: 2rem; color: var(--gray); font-size: 0.875rem; border-top: 1px solid var(--border); margin-top: 2rem; }
.blog-footer a { color: var(--gray); }
.blog-meta { color: var(--gray); font-size: 0.875rem; margin-bottom: 1.5rem; }
.blog-tag { display: inline-block; background: var(--emerald-light); color: var(--emerald); padding: 0.25rem 0.75rem; border-radius: 1rem; font-size: 0.75rem; font-weight: 600; margin-right: 0.5rem; }
.post-card { border: 1px solid var(--border); border-radius: 1rem; padding: 1.5rem; margin: 1rem 0; transition: box-shadow 0.2s; }
.post-card:hover { box-shadow: 0 4px 12px rgba(0,0,0,0.08); }
.post-card h2 { border: none; margin-bottom: 0.5rem; }
.post-card h2 a { color: #111827; }
.post-card .excerpt { color: var(--gray); font-size: 0.9rem; margin: 0.5rem 0; }
.legal-accordion { max-width: 720px; margin: 2rem auto 0; padding: 0 1.5rem; }
.legal-accordion summary { cursor: pointer; font-weight: 700; color: var(--emerald); padding: 0.75rem 0; }
.legal-accordion .legal-content { border-top: 1px solid var(--border); }
.legal-accordion .legal-content section { padding: 1rem 0; border-bottom: 1px solid var(--border); }
.legal-accordion .legal-content h2 { font-size: 1.1rem; margin: 0.5rem 0; }
.legal-accordion .legal-content p { font-size: 0.875rem; color: var(--gray); }
.brand-h2 { font-size: 1.5rem; margin-bottom: 0.25rem; }