:root{
--blue:#2563eb;--blue-bright:#3b82f6;--blue-deep:#0b3a8f;--cyan:#38bdf8;--sky:#7cc4fb;
--accent:#2f6bff;
--navy:#0a1526;--navy-2:#0d1b34;--navy-3:#12244a;
--ink:#0b1a33;--slate:#33507d;
--body:#3a4a63;--muted:#7688a5;--silver:#c3d0e4;
--ice:#eef3fb;--ice-2:#e4edfb;--line:#d5e0f2;--white:#ffffff;
--radius:16px;--radius-sm:10px;
--shadow:0 10px 30px rgba(11,26,51,.09);--shadow-lg:0 24px 60px rgba(11,26,51,.20);
--maxw:1180px;
--font-head:'Poppins',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
--font-body:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);color:var(--body);background:var(--white);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--font-head);color:var(--ink);line-height:1.2;font-weight:700}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px;width:100%}
section{padding:70px 0}
.bg-ice{background:var(--ice)}
.bg-dark{background:linear-gradient(160deg,#0d1b34,#0a1526);color:#c7d6ef}
.bg-dark .section-title,.bg-dark h2,.bg-dark h3,.bg-dark h4{color:#fff}
.text-center{text-align:center}
.section-head{text-align:center;max-width:760px;margin:0 auto 44px}
.eyebrow{display:inline-block;font-family:var(--font-head);font-weight:700;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--blue);margin-bottom:12px}
.section-title{font-size:2rem;font-weight:800;letter-spacing:-.01em}
.section-title.left{text-align:left}
.section-desc{margin-top:14px;color:var(--muted);font-size:1.05rem}
.bg-dark .section-desc{color:#8ea6cc}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;font-family:var(--font-head);font-weight:700;font-size:.98rem;padding:14px 26px;border-radius:50px;border:2px solid transparent;cursor:pointer;transition:.2s;text-align:center;line-height:1.1;text-decoration:none}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff;box-shadow:0 8px 22px rgba(37,99,235,.36)}
.btn-primary:hover{box-shadow:0 12px 30px rgba(37,99,235,.5);color:#fff}
.btn-outline{background:transparent;border-color:var(--blue);color:var(--blue)}
.btn-outline:hover{background:var(--blue);color:#fff}
.bg-dark .btn-outline{border-color:var(--sky);color:var(--sky)}
.bg-dark .btn-outline:hover{background:var(--blue);color:#fff;border-color:var(--blue)}
.btn-lg{padding:17px 34px;font-size:1.05rem}
.btn-block{display:flex;width:100%}
.review-bar{background:var(--navy);color:#a9c0e4;font-size:.82rem;display:flex;flex-wrap:wrap;gap:8px 26px;justify-content:center;padding:9px 16px}
.review-bar strong{color:#fff}
.review-bar .chk{color:var(--cyan)}
.review-bar .chk strong{color:#fff}
nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:12px 22px;display:flex;align-items:center;justify-content:space-between}
.logo{font-family:var(--font-head);font-weight:800;font-size:1.4rem;color:var(--ink);letter-spacing:-.02em}
.logo span{color:var(--blue)}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{color:var(--ink);font-weight:600;font-size:.95rem;text-decoration:none}
.nav-links a:hover{color:var(--blue);text-decoration:none}
.nav-cta{background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff!important;padding:10px 20px;border-radius:50px;box-shadow:0 6px 16px rgba(37,99,235,.34)}
.nav-cta:hover{color:#fff!important}
.mobile-toggle{display:none;background:none;border:none;font-size:1.6rem;color:var(--ink);cursor:pointer}
footer{background:linear-gradient(160deg,#0d1b34,#070f1e);color:#8ea6cc;padding:60px 0 26px}
footer .container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding-bottom:34px;border-bottom:1px solid #1a2c4d}
.footer-col h4{color:#fff;font-size:1.05rem;margin-bottom:14px}
.footer-col p{font-size:.9rem;margin-bottom:10px}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:9px;font-size:.9rem}
.footer-col a{color:#8ea6cc;text-decoration:none}
.footer-col a:hover{color:var(--sky)}
.footer-badges{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;padding:26px 0}
.footer-badge{background:#0f1f3b;border:1px solid #1a2c4d;color:#a9c0e4;font-size:.78rem;font-weight:600;padding:7px 14px;border-radius:50px}
.footer-legal{text-align:center;font-size:.85rem;margin:16px 0 14px}
.footer-legal a{color:#a9c0e4;margin:0 4px;text-decoration:none}
.copyright{text-align:center;font-size:.82rem;color:#61789c}
.sticky-bar{position:fixed;left:0;right:0;bottom:0;z-index:200;background:rgba(7,15,30,.97);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 22px;transform:translateY(120%);transition:.35s;border-top:2px solid var(--cyan)}
.sticky-bar.show{transform:translateY(0)}
.sticky-bar-text{color:#fff;font-family:var(--font-head);font-weight:700;font-size:.98rem;display:flex;flex-direction:column}
.sticky-bar-text small{font-weight:400;color:#8ea6cc;font-size:.78rem}
.sticky-bar .btn{background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff;padding:11px 22px;white-space:nowrap}
#back-to-top{position:fixed;right:20px;bottom:86px;z-index:150;width:44px;height:44px;border-radius:50%;background:var(--blue);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.3rem;cursor:pointer;opacity:0;pointer-events:none;transition:.3s;box-shadow:0 6px 18px rgba(37,99,235,.48)}
#back-to-top.show{opacity:1;pointer-events:auto}

.post-hero{background:radial-gradient(900px 420px at 80% -10%,rgba(56,189,248,.2),transparent 56%),linear-gradient(160deg,#0d1b34,#0a1526);padding:48px 0 40px;border-bottom:1px solid #1a2c4d}
.post-hero .crumb{font-size:.82rem;color:#8ea6cc;margin-bottom:14px}
.post-hero .crumb a{color:var(--sky)}
.post-hero .cat{display:inline-block;background:rgba(56,189,248,.16);border:1px solid rgba(124,196,251,.4);color:var(--sky);font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;padding:5px 13px;border-radius:50px;margin-bottom:14px}
.post-hero h1{color:#fff;font-size:2.1rem;font-weight:800;line-height:1.22;max-width:900px}
.post-hero .meta{color:#8ea6cc;font-size:.86rem;margin-top:14px}
.post-wrap{max-width:800px;margin:0 auto;padding:48px 22px 10px}
.post-body{font-size:1.02rem;color:#3a4a63}
.post-body h2{font-size:1.5rem;margin:30px 0 12px;color:var(--ink)}
.post-body p{margin-bottom:16px}
.post-body ul{margin:0 0 16px 22px}
.post-body li{margin-bottom:8px}
.post-body a{color:var(--blue-deep);font-weight:600}
.inline-cta{background:var(--ice);border-left:4px solid var(--blue);border-radius:10px;padding:16px 20px;margin:22px 0;font-size:.96rem}
.factbox{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 24px;margin:24px 0;box-shadow:var(--shadow)}
.factbox h4{font-size:1.05rem;margin-bottom:12px;color:var(--blue-deep)}
.factbox ul{margin-left:20px}
.factbox li{margin-bottom:8px;font-size:.94rem}
.cta-box{background:linear-gradient(160deg,#0d1b34,#0a1526);border-radius:var(--radius);padding:30px;text-align:center;margin:32px 0}
.cta-box h3{color:#fff;font-size:1.35rem;margin-bottom:10px}
.cta-box p{color:#bccde8;margin-bottom:18px;font-size:.96rem}
.cta-box a{color:var(--sky)}
.cta-box .btn-primary{color:#fff}
.author-box{display:flex;gap:16px;background:var(--ice);border-radius:14px;padding:22px;margin:30px 0;align-items:flex-start}
.author-badge{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,var(--cyan),var(--blue));color:#fff;font-family:var(--font-head);font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.ab-name{font-family:var(--font-head);font-weight:700;color:var(--ink)}
.ab-role{font-size:.82rem;color:var(--muted);margin-bottom:8px}
.author-box p{font-size:.9rem;color:var(--body);margin:0}
.post-refs{font-size:.85rem;color:var(--muted);border-top:1px solid var(--line);padding-top:16px;margin-top:24px}
.post-refs a{color:var(--blue-deep)}
.related{max-width:800px;margin:0 auto;padding:20px 22px 60px}
.related h3{font-size:1.3rem;margin-bottom:18px;color:var(--ink)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.related-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;box-shadow:var(--shadow);transition:.2s}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.related-card a{color:var(--ink);font-weight:600;font-size:.92rem}
.related-card a:hover{color:var(--blue-deep)}
.blog-index-hero{background:radial-gradient(900px 440px at 80% -10%,rgba(56,189,248,.22),transparent 56%),linear-gradient(160deg,#0d1b34,#0a1526);padding:60px 0;text-align:center;border-bottom:1px solid #1a2c4d}
.blog-index-hero h1{color:#fff;font-size:2.5rem;font-weight:800;margin-bottom:12px}
.blog-index-hero p{color:#8ea6cc}
.blog-index-hero a{color:var(--sky)}
.blog-section{padding:44px 0;border-bottom:1px solid var(--line)}
.blog-section h2{font-size:1.5rem;margin-bottom:20px;color:var(--ink)}
.post-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.post-list a{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 18px;color:var(--ink);font-weight:600;font-size:.94rem;box-shadow:var(--shadow);transition:.2s;text-decoration:none}
.post-list a:hover{color:var(--blue-deep);transform:translateX(4px);text-decoration:none}
@media(max-width:640px){.related-grid,.post-list{grid-template-columns:1fr}.post-hero h1{font-size:1.6rem}}