:root {
	--site-max: 1240px;
	--site-gutter: max(48px, 5vw);
	--site-wrap: calc(var(--site-max) + 2 * var(--site-gutter));
	--head-h: 70px;
}
@media (max-width: 768px) {
	:root { --site-gutter: 24px; }
}
@media (max-width: 640px) {
	:root { --site-gutter: 14px; }
}
.container {
	width: 100%;
	max-width: var(--site-wrap);
	margin-left: auto;
	margin-right: auto;
	padding-left: var(--site-gutter);
	padding-right: var(--site-gutter);
}
.site-header {
	--sh-link: #7dd3fc;
	--sh-link-hover: #e3e7f7;
	--sh-accent: #38bdf8;
	--sh-line: rgba(148, 163, 184, 0.18);
	--sh-card: #1e293b;
	--cb-accent-text: var(--sh-link);
	--text-link-hover: var(--sh-link-hover);
	position: sticky;
	top: 0;
	z-index: 1000;
	width: 100%;
	background: rgba(15, 23, 42, 0.95);
	-webkit-backdrop-filter: blur(12px);
	backdrop-filter: blur(12px);
	border-bottom: 1px solid var(--sh-line);
	font-family: 'Poppins', system-ui, sans-serif;
	font-size: 16px;
	line-height: 1.6;
	color: #f1f5f9;
	color-scheme: dark;
	text-align: left;
}
.site-header *, .site-header *::before, .site-header *::after { box-sizing: border-box; }
.site-header ul { list-style: none; margin: 0; padding: 0; }
.site-header a { color: var(--sh-link); text-decoration: none; }
.site-header a:hover, .site-header a:focus { color: var(--sh-link-hover); text-decoration: none; }
.site-header button { margin: 0; font-family: inherit; text-transform: none; }
.site-header svg { display: block; flex-shrink: 0; }
.site-header .nav-row {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 20px;
	width: 100%;
	max-width: var(--site-wrap);
	min-height: calc(var(--head-h) - 1px);
	margin: 0 auto;
	padding: 0 var(--site-gutter);
}
.site-header .logo-plate { display: inline-flex; align-items: center; flex-shrink: 0; line-height: 0; border-radius: 8px; }
.site-header .logo-plate img { display: block; width: auto; height: 36px; max-width: 160px; object-fit: contain; padding: 4px 10px; background: #fff; border-radius: 8px; }
.site-header .header-nav { display: flex; align-items: center; min-width: 0; }
.site-header .nav-links { display: flex; align-items: center; gap: 1.25rem; }
.site-header .nav-links > li { position: relative; display: flex; align-items: center; }
.site-header .nav-a {
	position: relative;
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 0.5rem 0.1rem;
	background: none;
	border: 0;
	border-radius: 0;
	color: var(--sh-link);
	font: 500 0.88rem/1.6 'Poppins', system-ui, sans-serif;
	white-space: nowrap;
	cursor: pointer;
	transition: color 0.3s ease;
}
.site-header .nav-a::after { content: ''; position: absolute; bottom: 2px; left: 0; width: 0; height: 2px; border-radius: 2px; background: var(--sh-accent); transition: width 0.3s ease; }
.site-header .nav-a:hover, .site-header .nav-dropdown.open > .nav-a { color: var(--sh-link-hover); }
.site-header .nav-a[aria-current="page"], .site-header .nav-dropdown.is-current > .nav-a { color: #fff; }
.site-header .nav-a:hover::after, .site-header .nav-dropdown.open > .nav-a::after, .site-header .nav-a[aria-current="page"]::after, .site-header .nav-dropdown.is-current > .nav-a::after { width: 100%; }
.site-header .nav-caret { width: 10px; height: 10px; transition: transform 0.3s ease; }
.site-header .nav-dropdown.open .nav-caret { transform: rotate(180deg); }
.site-header .nav-sub-menu {
	position: absolute;
	top: 100%;
	left: 50%;
	z-index: 1001;
	min-width: 195px;
	padding: 0.5rem;
	background: var(--sh-card);
	border: 1px solid var(--sh-line);
	border-radius: 10px;
	box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
	opacity: 0;
	visibility: hidden;
	pointer-events: none;
	transform: translateX(-50%) translateY(6px);
	transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
}
.site-header .nav-dropdown.open > .nav-sub-menu { opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0); }
@media (hover: hover) {
	.site-header .nav-dropdown:hover > .nav-sub-menu { opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0); }
	.site-header .nav-dropdown:hover .nav-caret { transform: rotate(180deg); }
	.site-header .nav-dropdown:hover > .nav-a { color: var(--sh-link-hover); }
	.site-header .nav-dropdown:hover > .nav-a::after { width: 100%; }
}
.site-header .nav-sub { display: block; padding: 0.55rem 0.9rem; border-radius: 6px; color: var(--sh-link); font-size: 0.85rem; font-weight: 500; line-height: 1.6; white-space: nowrap; transition: background 0.2s ease, color 0.2s ease; }
.site-header .nav-sub:hover { background: rgba(56, 189, 248, 0.12); color: var(--sh-link-hover); }
.site-header .nav-sub[aria-current="page"] { color: #fff; background: rgba(56, 189, 248, 0.12); }
.site-header .nav-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.site-header .nav-start {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 6px;
	padding: 0.55rem 1.25rem;
	border-radius: 6px;
	color: #fff;
	background: linear-gradient(135deg, #3a75a8, #2563eb);
	border: 1px solid rgba(255, 255, 255, 0.1);
	box-shadow: 0 3px 12px rgba(37, 99, 235, 0.25);
	font: 600 0.88rem/1.6 'Poppins', system-ui, sans-serif;
	white-space: nowrap;
	transition: all 0.3s ease;
}
.site-header .nav-start:hover, .site-header .nav-start:focus { color: #fff; background: linear-gradient(135deg, #4a8bc4, #3b82f6); box-shadow: 0 6px 18px rgba(37, 99, 235, 0.4); transform: translateY(-2px); }
.site-header .nav-menu-btn { display: none; align-items: center; justify-content: center; width: 38px; height: 38px; padding: 0.4rem; background: none; border: 0; border-radius: 6px; color: #f1f5f9; line-height: 1; cursor: pointer; }
.site-header .nav-menu-btn svg { width: 22px; height: 22px; }
.site-header .nav-menu-btn .ico-close, .site-header .nav-menu-btn[aria-expanded="true"] .ico-bars { display: none; }
.site-header .nav-menu-btn[aria-expanded="true"] .ico-close { display: block; }
.site-header .nav-a:focus-visible, .site-header .nav-sub:focus-visible, .site-header .nav-start:focus-visible, .site-header .nav-menu-btn:focus-visible, .site-header .mnav-a:focus-visible, .site-header .logo-plate:focus-visible { outline: 2px solid var(--sh-accent); outline-offset: 3px; border-radius: 4px; }
.site-header .mobile-nav-drawer {
	display: none;
	position: absolute;
	top: 100%;
	left: 0;
	right: 0;
	max-height: calc(100vh - var(--head-h));
	max-height: calc(100dvh - var(--head-h));
	overflow-y: auto;
	overscroll-behavior: contain;
	padding: 1.25rem var(--site-gutter);
	background: rgba(15, 23, 42, 0.98);
	border-bottom: 1px solid var(--sh-line);
	box-shadow: 0 10px 20px rgba(0, 0, 0, 0.8);
	-webkit-backdrop-filter: blur(10px);
	backdrop-filter: blur(10px);
}
.site-header.nav-open { background: rgba(15, 23, 42, 0.98); -webkit-backdrop-filter: none; backdrop-filter: none; }
.site-header.nav-open .mobile-nav-drawer { display: block; }
.site-header .mnav-links { display: flex; flex-direction: column; gap: 0.75rem; max-width: var(--site-max); margin: 0 auto; }
.site-header .mnav-a {
	display: flex;
	align-items: center;
	gap: 8px;
	width: 100%;
	padding: 0.5rem 0;
	background: none;
	border: 0;
	border-bottom: 1px solid rgba(255, 255, 255, 0.05);
	border-radius: 0;
	color: var(--sh-link);
	font: 500 1rem/1.6 'Poppins', system-ui, sans-serif;
	text-align: left;
	cursor: pointer;
	transition: color 0.3s ease;
}
.site-header .mnav-a:hover { color: var(--sh-link-hover); }
.site-header .mnav-a[aria-current="page"], .site-header .mnav-a.is-current { color: #fff; font-weight: 600; }
.site-header .mnav-a .nav-caret { margin-left: auto; }
.site-header .mnav-a[aria-expanded="true"] .nav-caret { transform: rotate(180deg); }
.site-header .mnav-sub { display: flex; flex-direction: column; padding-left: 1rem; }
.site-header .mnav-sub[hidden] { display: none; }
.site-header .mnav-sub .mnav-a { font-size: 0.9rem; }
.site-header .mnav-cta { margin-top: 0.5rem; }
.site-header .mnav-cta .nav-start { width: 100%; padding: 0.7rem 1.25rem; font-size: 0.95rem; }
.site-header .mnav-cta .nav-start:hover { transform: none; }
.site-header.nav-fold .header-nav { display: none; }
.site-header.nav-fold .nav-menu-btn { display: inline-flex; }
@media (max-width: 1024px) {
	.site-header .header-nav { display: none; }
	.site-header .nav-menu-btn { display: inline-flex; }
}
@media (min-width: 1025px) {
	.site-header:not(.nav-fold) .mobile-nav-drawer { display: none; }
}
@media (max-width: 480px) {
	.site-header .nav-row { gap: 10px; }
	.site-header .nav-actions { gap: 6px; }
	.site-header .logo-plate img { height: 32px; max-width: 120px; padding: 4px 8px; }
	.site-header .nav-actions > .nav-start { padding: 0.45rem 0.75rem; font-size: 0.78rem; }
	.site-header .nav-menu-btn { width: 34px; padding: 0.3rem; }
}
@media (prefers-reduced-motion: reduce) {
	.site-header .nav-a, .site-header .nav-a::after, .site-header .nav-caret, .site-header .nav-sub-menu, .site-header .nav-sub, .site-header .nav-start, .site-header .mnav-a { transition: none; }
}