:root{
  --brand:#3F51B5; --brand-3:#7C4DFF; --brand-700:#303F9F;
  --ink:#0E1220; --ink-2:#2A3040; --muted:#5B6472; --muted-2:#8A93A6;
  --bg:#FFFFFF; --soft:#F5F7FC; --soft-2:#EEF1FA; --line:#E6EAF4; --success:#12A56A;
  --shadow-sm:0 1px 2px rgba(16,22,45,.06),0 2px 8px rgba(16,22,45,.05);
  --shadow-md:0 10px 30px rgba(16,22,45,.10);
  --maxw:1160px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased;}
a{color:var(--brand);text-decoration:none;} a:hover{text-decoration:underline;}
img{max-width:100%;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}

header.site{position:sticky;top:0;z-index:50;}
.brand-banner{background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line);}
.brand{display:flex;align-items:center;justify-content:center;gap:14px;height:88px;font-weight:900;font-size:30px;letter-spacing:-.02em;color:var(--ink);}
.brand:hover{text-decoration:none;}
.brand .mark{width:52px;height:52px;border-radius:14px;overflow:hidden;background:linear-gradient(160deg,#20263c,#0d1120);box-shadow:0 6px 16px rgba(16,22,45,.45);display:grid;place-items:center;}
.brand .mark img{width:100%;height:100%;object-fit:cover;border-radius:14px;display:block;}
.nav-banner{background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;justify-content:center;gap:30px;height:56px;}
.nav a{font-size:15px;font-weight:600;color:var(--ink-2);}
.nav a:hover{color:var(--brand);text-decoration:none;}

.article-hero{background:linear-gradient(180deg,#fff,var(--soft));border-bottom:1px solid var(--line);padding:44px 0 34px;}
.breadcrumb{font-size:13.5px;color:var(--muted-2);margin-bottom:16px;}
.breadcrumb a{color:var(--muted);font-weight:600;}
.eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);background:var(--soft-2);padding:6px 13px;border-radius:999px;margin-bottom:16px;}
h1{font-size:clamp(28px,4.4vw,44px);line-height:1.14;font-weight:900;letter-spacing:-.02em;margin:0;max-width:17ch;}
.article{max-width:760px;margin:0 auto;padding:0 24px;}
.article-body{padding:40px 0 8px;font-size:17.5px;color:var(--ink-2);}
.article-body h2{font-size:clamp(22px,3vw,28px);font-weight:800;color:var(--ink);letter-spacing:-.01em;margin:40px 0 12px;}
.article-body h3{font-size:19px;font-weight:700;color:var(--ink);margin:26px 0 6px;}
.article-body p{margin:0 0 18px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;}
.article-body li{margin-bottom:10px;}
.article-body strong{color:var(--ink);}
.article-body .lead{font-size:19.5px;color:var(--ink-2);}
.article-body table{width:100%;border-collapse:collapse;margin:8px 0 24px;font-size:15.5px;}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 13px;text-align:left;vertical-align:top;}
.article-body th{background:var(--soft);font-weight:700;color:var(--ink);}

.cta-box{background:linear-gradient(150deg,var(--brand),var(--brand-700));color:#fff;border-radius:22px;padding:34px 30px;text-align:center;margin:40px 0 8px;box-shadow:var(--shadow-sm);}
.cta-box h2{color:#fff !important;margin:0 0 8px !important;font-size:24px !important;}
.cta-box p{color:rgba(255,255,255,.9);margin:0 0 20px;}
.badge-link{display:inline-flex;transition:transform .15s ease;}
.badge-link:hover{transform:translateY(-2px);text-decoration:none;}
.badge-link img{height:58px;display:block;}

footer.site{background:#0E1220;color:#aeb4c8;padding:44px 0 28px;font-size:14.5px;margin-top:48px;}
footer .brand{color:#fff;height:auto;justify-content:flex-start;font-size:22px;}
footer .brand .mark{width:40px;height:40px;border-radius:11px;}
.foot-links{margin-top:16px;display:flex;gap:22px;flex-wrap:wrap;}
.foot-links a{color:#aeb4c8;}
.foot-links a:hover{color:#fff;text-decoration:none;}
.foot-bottom{margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.08);color:#727a92;font-size:13px;}
@media (max-width:680px){ .nav{gap:18px;} .brand{font-size:24px;height:64px;} .brand .mark{width:42px;height:42px;} }