:root{
  --bg:#ffffff; --bg-alt:#f4f7fb; --text:#1b2333; --muted:#5a6578; --line:#dfe5ee;
  --brand:#1f5fff; --brand-dark:#1546c4; --accent:#00b37e; --warn-bg:#fff7e6; --warn-line:#f2c46d;
  --radius:12px; --max:860px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
a{color:var(--brand)}
img{max-width:100%;height:auto}
.wrap{max-width:var(--max);margin:0 auto;padding:0 16px}
.wide{max-width:1100px}

/* header */
.site-header{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:10}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;max-width:1100px}
.logo{font-weight:800;font-size:20px;text-decoration:none;color:var(--text)}
.logo span{color:var(--brand)}
.nav a{margin-left:18px;text-decoration:none;color:var(--muted);font-size:15px}
.nav a.btn-sm{background:var(--brand);color:#fff;padding:8px 14px;border-radius:8px}
@media(max-width:640px){.nav a:not(.btn-sm){display:none}}

/* hero */
.hero{background:linear-gradient(180deg,#eef3ff,#fff);padding:48px 0 32px;text-align:center}
.hero h1{font-size:clamp(28px,5vw,42px);line-height:1.2;margin:0 0 14px}
.hero p.lead{font-size:19px;color:var(--muted);max-width:680px;margin:0 auto 24px}
.btn{display:inline-block;background:var(--brand);color:#fff;text-decoration:none;font-weight:700;padding:14px 28px;border-radius:10px;font-size:18px;transition:background .15s}
.btn:hover{background:var(--brand-dark)}
.btn.green{background:var(--accent)}
.btn.green:hover{background:#00976a}
.btn.ghost{background:#fff;color:var(--brand);border:2px solid var(--brand)}
.hero .meta{margin-top:14px;color:var(--muted);font-size:14px}

/* info box */
.infobox{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin:28px 0}
.infobox div{background:#fff;padding:12px 14px}
.infobox b{display:block;font-size:13px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.03em}

/* article */
article h2{font-size:28px;line-height:1.3;margin:48px 0 12px;padding-top:8px}
article h3{font-size:21px;margin:30px 0 8px}
article p,article li{color:#2a3346}
.toc{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);padding:16px 22px;margin:24px 0}
.toc strong{display:block;margin-bottom:6px}
.toc ol{margin:0;padding-left:20px;columns:2;column-gap:28px}
@media(max-width:640px){.toc ol{columns:1}}
.toc a{text-decoration:none}
.note{background:var(--warn-bg);border-left:4px solid var(--warn-line);padding:12px 16px;border-radius:6px;margin:18px 0}
.tip{background:#eafaf3;border-left:4px solid var(--accent);padding:12px 16px;border-radius:6px;margin:18px 0}
.table-scroll{overflow-x:auto;margin:16px 0}
table{border-collapse:collapse;width:100%;font-size:15.5px}
th,td{border:1px solid var(--line);padding:9px 12px;text-align:left;vertical-align:top}
th{background:var(--bg-alt)}
.cta-band{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);padding:24px;text-align:center;margin:36px 0}
.cta-band p{margin:0 0 14px;font-weight:600}
details{border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:10px 0;background:#fff}
details summary{cursor:pointer;font-weight:700}
details[open] summary{margin-bottom:8px}

/* download page */
.dl-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin:28px 0}
.dl-card{border:1px solid var(--line);border-radius:var(--radius);padding:22px;background:#fff;display:flex;flex-direction:column}
.dl-card.detected{border:2px solid var(--brand);box-shadow:0 6px 24px rgba(31,95,255,.12)}
.dl-card h3{margin:0 0 4px;font-size:20px}
.dl-card .sub{color:var(--muted);font-size:14px;margin-bottom:12px}
.dl-card dl{margin:0 0 16px;font-size:14.5px;display:grid;grid-template-columns:auto 1fr;gap:4px 10px}
.dl-card dt{color:var(--muted)}
.dl-card dd{margin:0}
.dl-card .btn{margin-top:auto;text-align:center;font-size:16px;padding:12px 18px}
.dl-card .alt{margin-top:10px;font-size:14px;text-align:center}
.badge{display:inline-block;background:var(--brand);color:#fff;font-size:12px;font-weight:700;border-radius:20px;padding:2px 10px;margin-left:6px;vertical-align:middle}

/* footer */
.site-footer{border-top:1px solid var(--line);margin-top:56px;padding:28px 0;color:var(--muted);font-size:14px;background:var(--bg-alt)}
.site-footer a{color:var(--muted)}

/* ---------- CMS theme additions ---------- */
.nav{display:flex;align-items:center;flex-wrap:wrap}
.page-head{padding:36px 0 8px}
.page-head h1{font-size:clamp(28px,4.5vw,40px);line-height:1.2;margin:0 0 8px}
.page-head p{color:var(--muted);margin:0}
.breadcrumbs{font-size:14px;color:var(--muted);padding-top:18px}
.breadcrumbs a{color:var(--muted);text-decoration:none}
.breadcrumbs a:hover{text-decoration:underline}
.breadcrumbs span.sep{margin:0 6px}
.post-meta{color:var(--muted);font-size:15px;margin-bottom:18px}
.featured{border-radius:var(--radius);margin:8px 0 24px;width:100%}
.content-body img{border-radius:8px}
.content-body figure{margin:24px 0}
.content-body figcaption{font-size:14px;color:var(--muted);text-align:center}
.content-body blockquote{border-left:4px solid var(--brand);margin:20px 0;padding:6px 18px;color:var(--muted);background:var(--bg-alt);border-radius:0 8px 8px 0}
.content-body pre{background:#0f172a;color:#e2e8f0;padding:16px;border-radius:8px;overflow:auto;font-size:14px}
.content-body code{background:var(--bg-alt);padding:1px 5px;border-radius:4px;font-size:.92em}
.content-body pre code{background:none;padding:0}
.content-body table{display:block;overflow-x:auto}
.tags{margin:28px 0;display:flex;gap:8px;flex-wrap:wrap}
.tags span{background:var(--bg-alt);border:1px solid var(--line);border-radius:20px;padding:2px 12px;font-size:14px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:22px;margin:24px 0}
.card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;display:flex;flex-direction:column;transition:box-shadow .15s}
.card:hover{box-shadow:0 8px 28px rgba(15,23,42,.08)}
.card img{aspect-ratio:16/9;object-fit:cover;width:100%}
.card .card-body{padding:18px}
.card h2,.card h3{font-size:20px;line-height:1.35;margin:0 0 8px}
.card h2 a,.card h3 a{color:var(--text);text-decoration:none}
.card p{margin:0;color:var(--muted);font-size:15.5px}
.card .meta{font-size:13px;color:var(--muted);margin-bottom:6px}
.pagination{display:flex;gap:6px;justify-content:center;margin:30px 0}
.pagination a,.pagination span{border:1px solid var(--line);border-radius:8px;padding:6px 12px;text-decoration:none}
.pagination .current{background:var(--brand);color:#fff;border-color:var(--brand)}
.search-form{display:flex;gap:8px;margin:20px 0}
.search-form input{flex:1;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:16px}
.search-form button{border:0;background:var(--brand);color:#fff;border-radius:10px;padding:0 20px;font-weight:700;cursor:pointer}
.related{border-top:1px solid var(--line);margin-top:40px;padding-top:12px}
.footer-nav a{margin-right:14px}
.logo img{max-height:40px;vertical-align:middle}
.error-page{text-align:center;padding:80px 0}
.error-page h1{font-size:64px;margin:0}