*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:#f7f8fa;color:#1a1a2e;line-height:1.7;font-size:16px}
a{color:#1FAD5F;text-decoration:none}
a:hover{text-decoration:underline}

.post-header{background:#0f1923;padding:14px 24px}
.post-header-inner{max-width:880px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:16px}
.post-header .brand{font-size:16px;font-weight:800;color:#fff}
.post-header .brand span{color:#1FAD5F}
.post-header nav a{color:rgba(255,255,255,.55);font-size:13px}
.post-header nav a:hover{color:#fff}

.post{max-width:780px;margin:0 auto;padding:48px 24px 80px}
.post-meta{font-size:13px;color:#888;margin-bottom:8px;letter-spacing:.3px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.post-meta .post-updated{color:#1FAD5F;font-weight:600}
.post h1{font-size:36px;line-height:1.2;font-weight:800;margin:0 0 26px;letter-spacing:-.5px}
.post-cover{display:block;width:100%;height:auto;border-radius:16px;margin:0 0 30px;background:#e5e7eb}
.post-lead{font-size:19px;line-height:1.55;color:#374151;margin:0 0 36px;font-weight:500}

.post-section{margin:42px 0}
.post-section h2{font-size:24px;font-weight:800;color:#0f1923;margin:0 0 14px;letter-spacing:-.3px}
.post-section p{margin:0 0 14px;color:#1a1a2e}
.post-section ul,.post-section ol{margin:10px 0 16px 22px}
.post-section li{margin-bottom:6px}
.post-section strong{color:#0f1923}
.post-section em{color:#1a1a2e}
.post-section code{background:#eef2f6;padding:2px 7px;border-radius:5px;font-size:.92em;font-family:ui-monospace,Menlo,Consolas,monospace;color:#0f1923}

.post-faq h2{margin-bottom:18px}
.faq-item{background:#fff;border:1px solid #e8eaf0;border-radius:10px;padding:14px 18px;margin-bottom:10px}
.faq-item summary{cursor:pointer;font-weight:700;color:#0f1923;outline:none;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:14px}
.faq-item summary::after{content:"+";font-size:22px;color:#1FAD5F;font-weight:300;line-height:1;transition:transform .15s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{margin:12px 0 0;color:#374151;font-size:15px;line-height:1.65}

.post-cta{margin:54px 0 20px;padding:30px 28px;background:linear-gradient(135deg,#f0fdf4 0%,#fef7ed 100%);border:1px solid #bbf7d0;border-radius:16px;text-align:center}
.post-cta p{font-size:18px;color:#0f1923;margin:0 0 18px;font-weight:600;line-height:1.45}
.cta-btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;background:#1FAD5F;color:#fff;border-radius:11px;font-size:15.5px;font-weight:700;text-decoration:none;box-shadow:0 12px 28px rgba(31,173,95,.35);transition:transform .15s}
.cta-btn:hover{transform:translateY(-2px);text-decoration:none}

.post-footer{padding:30px 24px;text-align:center;color:#888;font-size:13px;border-top:1px solid #e0e0e0;margin-top:40px;background:#fff}
.post-footer a{color:#1FAD5F;margin:0 4px}

@media (max-width:680px){
  .post{padding:28px 18px 60px}
  .post h1{font-size:28px}
  .post-lead{font-size:16.5px}
  .post-section h2{font-size:21px}
}

/* === Index page (/blog) === */
.blog-index{max-width:1080px;margin:0 auto;padding:48px 24px 80px}
.blog-index .index-head{text-align:center;margin-bottom:42px}
.blog-index h1{font-size:40px;font-weight:800;letter-spacing:-1px;margin:0 0 12px}
.blog-index .sub{color:#666;font-size:16px}
.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px}
.blog-card{background:#fff;border:1px solid #e8eaf0;border-radius:14px;overflow:hidden;display:block;color:inherit;transition:transform .15s,box-shadow .15s,border-color .15s}
.blog-card:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(15,23,42,.08);border-color:#bbf7d0;text-decoration:none}
.blog-card-cover{aspect-ratio:1200/630;background:#e5e7eb;display:block}
.blog-card-cover img{width:100%;height:100%;object-fit:cover;display:block}
.blog-card-body{padding:18px 20px 22px}
.blog-card-meta{font-size:12px;color:#888;margin-bottom:6px;letter-spacing:.3px}
.blog-card h3{font-size:18px;font-weight:800;line-height:1.3;color:#0f1923;margin:0 0 10px;letter-spacing:-.2px}
.blog-card p{font-size:14px;color:#555;line-height:1.55}
@media (max-width:680px){.blog-index{padding:28px 16px 60px}.blog-index h1{font-size:30px}}