:root{
  --ink:#131a2b; --navy:#0e1530; --navy2:#1b2550;
  --primary:#1f5fb8; --primary-deep:#184c95; --primary-soft:#e6eefb;
  --accent:#1f9d6b; --accent-deep:#178055;
  --bg:#f2f5f9; --bg-alt:#eef1fa; --card:#ffffff; --line:#e2e7ef; --line2:#d6dce6;
  --text:#2c3344; --muted:#6a7388; --gold:#c2901f; --cta:#f0850f; --cta-deep:#d56f06; --cta-soft:#fdecd2;
  --maxw:60rem;
  --r:16px; --shadow-sm:0 1px 2px rgba(19,26,43,.05); --shadow:0 8px 26px rgba(19,26,43,.09);
  --shadow-lg:0 24px 60px rgba(27,37,80,.18);
  --font:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.65;font-size:1.0625rem;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
a{color:var(--primary-deep);text-underline-offset:2px}
a:hover{color:var(--primary)}
h1,h2,h3,h4{font-family:var(--font);color:var(--ink);line-height:1.16;margin:0}
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:1.25rem}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-family:var(--font);font-weight:600;text-decoration:none;border-radius:12px;cursor:pointer;border:1.5px solid transparent;transition:transform .12s ease,background .2s ease,box-shadow .2s ease,border-color .2s ease}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--cta);color:var(--ink);padding:.72rem 1.3rem;font-weight:700;box-shadow:0 6px 16px rgba(176,98,10,.22)}
.btn-primary:hover{background:var(--cta-deep);box-shadow:0 8px 20px rgba(176,98,10,.30)}
.btn-lg{padding:1rem 2rem;font-size:1.06rem;border-radius:14px}

/* header */
.site-head{position:sticky;top:0;z-index:100;background:var(--navy);border-bottom:1px solid rgba(255,255,255,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;height:4.5rem}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none}
.brand img.logo{height:30px;width:auto;display:block}
.nav-links{display:flex;align-items:center;gap:1.6rem;list-style:none;margin:0;padding:0}
.nav-links a{color:#cdd5e6;text-decoration:none;font-size:.95rem;font-weight:500}
.nav-links a:hover{color:#fff}
.nav .btn-primary{padding:.6rem 1.15rem;font-size:.95rem}
@media (max-width:820px){.nav-links{display:none}}

/* breadcrumb + page head */
.page-wrap{padding-block:clamp(2.2rem,5vw,3.4rem)}
.crumbs{font-size:.85rem;color:var(--muted);margin:0 0 1.4rem}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--primary-deep);text-decoration:underline}
.crumbs span{margin:0 .45rem;color:#b6bdd0}
.page-head{max-width:46rem;margin:0 0 2.2rem}
.page-head h1{font-size:clamp(2rem,4.4vw,2.7rem);letter-spacing:-.01em;text-wrap:balance}
.page-head .lede{font-size:1.2rem;color:var(--muted);line-height:1.55;margin:1rem 0 0;max-width:42rem}
.updated{font-size:.85rem;color:var(--muted);margin:1.1rem 0 0}

/* article prose */
.prose{max-width:44rem;font-size:1.075rem;line-height:1.72;color:#373f52}
.prose h2{font-size:1.5rem;margin:2.6rem 0 .4rem;color:var(--ink);letter-spacing:-.01em;text-wrap:balance}
.prose h3{font-size:1.18rem;margin:1.8rem 0 .3rem;color:var(--ink)}
.prose p{margin:.85rem 0 1.15rem}
.prose ul,.prose ol{margin:.6rem 0 1.3rem;padding-left:1.35rem}
.prose li{margin:.5rem 0}
.prose li::marker{color:var(--primary)}
.prose strong{color:var(--ink);font-weight:650}
.prose a{color:var(--primary-deep);font-weight:550}
.prose code{background:var(--bg-alt);border:1px solid var(--line);border-radius:6px;padding:.05rem .35rem;font-size:.92em}
.lead-p{font-size:1.16rem;line-height:1.6;color:var(--ink)}
.note{background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:12px;padding:1.1rem 1.25rem;margin:1.6rem 0}
.note p{margin:.3rem 0}
.cta-row{margin:2.4rem 0 .5rem;display:flex;flex-wrap:wrap;gap:.8rem;align-items:center}

/* contact form */
.cform{max-width:34rem;margin:1.8rem 0;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-sm);padding:1.6rem}
.cform label{display:block;font-weight:600;color:var(--ink);font-size:.92rem;margin:1rem 0 .35rem}
.cform label:first-child{margin-top:0}
.cform input,.cform textarea{width:100%;box-sizing:border-box;font-family:var(--font);font-size:1rem;padding:.8rem 1rem;border:1.5px solid var(--line2);border-radius:11px;color:var(--ink);outline:none;transition:border-color .15s,box-shadow .15s}
.cform input:focus,.cform textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,95,184,.14)}
.cform textarea{min-height:8rem;resize:vertical}
.cform .cbtn{width:100%;margin-top:1.2rem;border:none;cursor:pointer;border-radius:12px;padding:.9rem 1.2rem;font-family:var(--font);font-weight:800;font-size:1.04rem;color:var(--ink);background:var(--cta);box-shadow:0 6px 16px rgba(176,98,10,.24)}
.cform .cbtn:hover{filter:brightness(1.05)}
.cform .cbtn:disabled{opacity:.7;cursor:default}
.cform .cnote{font-size:.8rem;color:var(--muted);margin:.9rem 0 0}
.cmsg{font-weight:600;margin:1rem 0 0}
.cmsg.ok{color:var(--accent-deep)}
.cmsg.bad{color:#d23c22}

/* footer */
footer.site-foot{background:var(--ink);color:#aab4c6;margin-top:3rem}
.foot-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:2rem;padding-block:3.2rem}
.foot-brand .brand{margin-bottom:1rem}
.foot-brand p{font-size:.92rem;color:#8c97ab;max-width:25rem}
.foot-col h4{color:#cdd4e2;font-size:.82rem;letter-spacing:.02em;margin:0 0 1rem;font-weight:700}
.foot-col ul{list-style:none;margin:0;padding:0}
.foot-col li{margin-bottom:.6rem}
.foot-col a{color:#aab4c6;text-decoration:none;font-size:.92rem}
.foot-col a:hover{color:#fff}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding-block:1.5rem;display:flex;flex-wrap:wrap;gap:1rem;align-items:center;justify-content:space-between;font-size:.86rem;color:#8190a6}
.langbar a{color:#aab4c6;text-decoration:none;padding:0 .35rem}
.langbar a[aria-current]{color:#fff;font-weight:700}
@media (max-width:820px){.foot-top{grid-template-columns:1fr 1fr;gap:1.7rem}}
@media (max-width:520px){.foot-top{grid-template-columns:1fr}}


/* ---- E-E-A-T pages: tables, author card, sitemap ---- */
.tablewrap{overflow-x:auto;margin:1.5rem 0;border:1px solid var(--line);border-radius:12px}
.prose table{width:100%;border-collapse:collapse;font-size:.95rem;margin:0}
.prose th,.prose td{text-align:left;padding:.65rem .8rem;border-bottom:1px solid var(--line);vertical-align:top}
.prose thead th{background:var(--bg-alt);color:var(--ink);font-weight:650;font-size:.78rem;letter-spacing:.03em;text-transform:uppercase}
.prose tbody tr:last-child td{border-bottom:none}
.prose code{white-space:nowrap}
.authorcard{display:flex;gap:1.3rem;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:1.6rem;margin:0 0 1.9rem;box-shadow:var(--shadow-sm)}
.authorcard .ava{flex:0 0 auto;width:84px;height:84px;border-radius:50%;background:var(--primary-soft);color:var(--primary-deep);display:grid;place-items:center;font-weight:800;font-size:1.7rem}
.authorcard h1{font-size:1.65rem;margin:0 0 .15rem;color:var(--ink)}
.authorcard .role{color:var(--primary-deep);font-weight:600;margin:0 0 .5rem}
.authorcard .meta{font-size:.9rem;color:var(--muted);margin:0;line-height:1.5}
.sitemap-cols{columns:2;column-gap:2.6rem;margin-top:1rem}
.sitemap-cols section{break-inside:avoid;margin-bottom:1.4rem}
.sitemap-cols h2{font-size:1.05rem;margin:0 0 .5rem;color:var(--ink)}
.sitemap-cols ul{list-style:none;margin:0;padding:0}
.sitemap-cols li{margin:.4rem 0}
@media(max-width:600px){.sitemap-cols{columns:1}}