/* Blog pages share the app's three themes (theme-init.js sets data-theme before paint). */
:root{--bg:#f5f7fb;--surface:#fff;--ink:#101828;--muted:#475467;--border:#e4e7ec;--brand:#2c4a96;--brand-ink:#fff;--chip:#eef2fb;color-scheme:light}
:root[data-theme="classic"]{--bg:#f5f7f8;--ink:#203743;--muted:#5c727c;--border:#e1e8eb;--brand:#087f70;--chip:#e9f3ef}
:root[data-theme="dark"]{--bg:#171d20;--surface:#1f2528;--ink:#e8eef1;--muted:#a9b8bf;--border:#343d42;--brand:#4fc9b4;--brand-ink:#10302e;--chip:#2c363b;color-scheme:dark}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.7 "Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--brand)}a:focus-visible{outline:3px solid var(--brand);outline-offset:3px}
.blog-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 24px;background:var(--surface);border-bottom:1px solid var(--border)}
.blog-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--ink);text-decoration:none}
.blog-mark{width:30px;height:30px;border-radius:10px;background:var(--brand)}
.blog-top nav{display:flex;gap:6px}.blog-top nav a{padding:8px 12px;border-radius:10px;color:var(--muted);text-decoration:none;font-size:15px}.blog-top nav a[aria-current]{background:var(--chip);color:var(--ink)}
.blog-main{max-width:760px;margin:0 auto;padding:40px 20px 56px}
.blog-intro h1,.post h1{font-size:clamp(30px,5vw,42px);line-height:1.18;letter-spacing:-.8px;margin:8px 0 14px}
.blog-intro p{color:var(--muted);font-size:18px;margin:0 0 28px}
.post-list{list-style:none;margin:0;padding:0;display:grid;gap:16px}
.post-list a{display:block;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:22px;color:var(--ink);text-decoration:none}
.post-list a:hover{border-color:var(--brand)}.post-list h2{font-size:21px;line-height:1.35;margin:8px 0 6px}.post-list p{margin:0 0 10px;color:var(--muted);font-size:16px}
.post-cat{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.6px;text-transform:uppercase;color:var(--brand)}
.post-meta{color:var(--muted);font-size:14px}
.back{display:block;width:max-content;margin-bottom:22px;font-size:15px;text-decoration:none}
.post>.post-cat{display:block}
.post-body h2{font-size:26px;line-height:1.3;margin:38px 0 12px;letter-spacing:-.3px}.post-body h3{font-size:20px;margin:28px 0 8px}
.post-body p,.post-body li{font-size:18px}.post-body ul,.post-body ol{padding-left:24px}.post-body li{margin:6px 0}
.post-body blockquote{margin:24px 0;padding:14px 20px;border-left:4px solid var(--brand);background:var(--surface);border-radius:0 12px 12px 0}
.post-cta{margin-top:44px;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:22px}
.post-cta strong{font-size:19px}.post-cta p{margin:6px 0 14px;color:var(--muted)}
.post-cta a{display:inline-block;background:var(--brand);color:var(--brand-ink);padding:11px 18px;border-radius:12px;font-weight:650;text-decoration:none}
.blog-foot{display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:center;padding:26px 20px 40px;color:var(--muted);font-size:14px;border-top:1px solid var(--border)}
.blog-foot a{color:inherit}
@media(max-width:600px){body{font-size:16px}.blog-top{padding:12px 16px}.blog-main{padding:28px 16px 44px}.post-body p,.post-body li{font-size:17px}}