/**
 * Swarm Landing Page Stylesheet (DK NEJET)
 * Pure CSS without frameworks or libraries (no Tailwind, Bootstrap, etc.)
 * BEM-structured, responsive, and performance-optimized.
 *
 * @package DK_NEJET
 * @version 1.0.0
 */

/* -------------------------------------------------------------
   1. Imports & Typography
   ------------------------------------------------------------- */

:root {
	--dk-color-bg: #ffffff;
	--dk-color-dark: #0a0a0b;
	--dk-color-dark-alt: #1a1c1f;
	--dk-color-accent: #ed1164;
	--dk-color-accent-hover: #b00a4b;
	--dk-color-gray-light: #f7f7f8;
	--dk-color-text-muted: #3a3d42;
	--dk-color-text-dim: #6b7078;
	--dk-color-text-light-dim: #8a8f98;
	--dk-color-text-light: #b9bec6;
	--dk-color-num: #9ba0a8;
	--dk-color-border: #ececee;
	--dk-color-border-specs: #dfe0e3;
	--dk-color-border-dark: #26282c;

	--dk-font-sans:
		"Rajdhani", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
		sans-serif;
	--dk-font-mono:
		"IBM Plex Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo,
		monospace;

	--dk-max-width: 1180px;
	--dk-transition: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* -------------------------------------------------------------
   2. Reset & Base Elements
   ------------------------------------------------------------- */
html {
	scroll-behavior: smooth;
	box-sizing: border-box;
}

*,
*::before,
*::after {
	box-sizing: inherit;
}

body {
	margin: 0;
	background: var(--dk-color-bg);
	color: var(--dk-color-dark);
	font-family: var(--dk-font-sans);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

a {
	color: var(--dk-color-accent);
	text-decoration: none;
	transition:
		color var(--dk-transition),
		background var(--dk-transition),
		border-color var(--dk-transition);
}

a:hover {
	color: var(--dk-color-accent-hover);
}

details summary::-webkit-details-marker {
	display: none;
}

details summary {
	list-style: none;
}

.dk-page {
	max-width: 100%;
	overflow-x: hidden;
	position: relative;
}

/* -------------------------------------------------------------
   3. Common Components: Tags, Buttons, Dividers
   ------------------------------------------------------------- */
.dk-tag {
	font-family: var(--dk-font-mono);
	font-size: 11px;
	letter-spacing: 0.22em;
	text-transform: uppercase;
	margin: 0 0 18px;
}

.dk-tag--accent {
	color: var(--dk-color-accent);
}

.dk-tag--muted {
	color: var(--dk-color-text-dim);
}

.dk-accent-text,
.dk-header__logo span,
.dk-footer__logo span {
	color: var(--dk-color-accent);
}

.dk-dark-bold {
	color: var(--dk-color-dark);
	font-weight: 500;
}

.dk-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	font-size: 14px;
	font-weight: 600;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	padding: 16px 28px;
	text-decoration: none;
	border: none;
	cursor: pointer;
	transition:
		background var(--dk-transition),
		color var(--dk-transition),
		border-color var(--dk-transition);
}

.dk-btn--accent {
	background: var(--dk-color-accent);
	color: #ffffff;
}

.dk-btn--accent:hover {
	background: var(--dk-color-accent-hover);
	color: #ffffff;
}

.dk-btn--cta {
	background: var(--dk-color-accent);
	color: #ffffff;
}

.dk-btn--cta:hover {
	background: #ffffff;
	color: var(--dk-color-dark);
}

/* -------------------------------------------------------------
   4. Header & Navigation
   ------------------------------------------------------------- */
.dk-header {
	position: sticky;
	top: 0;
	z-index: 50;
	background: rgba(255, 255, 255, 0.94);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	border-bottom: 1px solid var(--dk-color-border);
}

.dk-header__container {
	max-width: var(--dk-max-width);
	margin: 0 auto;
	padding: 16px 32px;
	min-height: 78px;
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 14px 24px;
}

.dk-header__logo {
	color: var(--dk-color-dark);
	font-size: 26px;
	font-weight: 700;
	letter-spacing: 0.14em;
	line-height: 1;
	text-decoration: none;
}

.dk-header__nav {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 12px 24px;
}

.dk-header__nav-link {
	font-size: 13px;
	font-weight: 600;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--dk-color-text-muted);
}

.dk-header__nav-link:hover {
	color: var(--dk-color-accent);
}

.dk-header__cta {
	font-size: 13px;
	font-weight: 600;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--dk-color-dark);
	border: 1px solid var(--dk-color-dark);
	padding: 10px 20px;
	display: inline-block;
	transition:
		background var(--dk-transition),
		color var(--dk-transition);
}

.dk-header__cta:hover {
	background: var(--dk-color-dark);
	color: #ffffff;
}

/* -------------------------------------------------------------
   5. Hero Section
   ------------------------------------------------------------- */
.dk-hero {
	border-bottom: 1px solid var(--dk-color-border);
}

.dk-hero__container {
	max-width: var(--dk-max-width);
	/* margin: 0 auto;
	padding: 84px 32px 72px;
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
	gap: 56px;
	align-items: stretch; */

	/* max-width: 1380px; */
	margin: 0px auto;
	padding: 72px 32px 56px;
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr));
	gap: 24px 40px;
	align-items: center;
}

.dk-hero__content {
	position: relative;
	z-index: 1;
	max-width: 560px;
}

.dk-hero__tag {
	margin-bottom: 22px;
}

.dk-hero__title {
	font-size: clamp(38px, 5vw, 64px);
	font-weight: 700;
	line-height: 1.04;
	letter-spacing: 0.01em;
	margin: 0;
	text-wrap: pretty;
}

.dk-hero__divider {
	height: 2px;
	background: var(--dk-color-accent);
	width: 88px;
	margin: 30px 0 26px;
}

.dk-hero__lead {
	font-size: 21px;
	line-height: 1.5;
	color: var(--dk-color-dark-alt);
	margin: 0;
	max-width: 60ch;
	text-wrap: pretty;
}

.dk-hero__lead b {
	font-weight: 700;
}

.dk-hero__desc {
	font-family: var(--dk-font-mono);
	font-size: 14px;
	line-height: 1.8;
	color: var(--dk-color-text-dim);
	margin: 22px 0 0;
	max-width: 62ch;
}

.dk-hero__desc-bold {
	color: var(--dk-color-dark);
	font-weight: 500;
}

.dk-hero__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 14px;
	margin-top: 38px;
}

.dk-hero__media {
	display: flex;
	align-items: center;
	justify-content: center;
	min-width: 0px;
	position: relative;
	z-index: 0;
	margin: 0px -32px 0px 0px;
}

.dk-hero__video {
	width: 135%;
	max-width: none;
	flex: 0 0 auto;
	height: auto;
	display: block;
	pointer-events: none;
	filter: brightness(1.22) contrast(1.08);
	mix-blend-mode: multiply;
	mask-image: radial-gradient(
		70% 70% at 50% 50%,
		rgb(0, 0, 0) 55%,
		transparent 100%
	);
}

.dk-hero__canvas {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	pointer-events: none;
	opacity: 0;
	transition: opacity 0.5s ease;
}

.dk-hero__canvas--active {
	opacity: 1;
}

/* -------------------------------------------------------------
   6. Trust Strip
   ------------------------------------------------------------- */
.dk-trust {
	background: var(--dk-color-dark);
	color: #ffffff;
}

.dk-trust__container {
	max-width: var(--dk-max-width);
	margin: 0 auto;
	padding: 24px 32px;
	display: flex;
	flex-wrap: wrap;
	gap: 16px 48px;
	align-items: center;
}

.dk-trust__item {
	font-family: var(--dk-font-mono);
	font-size: 12px;
	color: var(--dk-color-text-light);
	display: flex;
	align-items: center;
	gap: 10px;
}

.dk-trust__bullet {
	width: 6px;
	height: 6px;
	background: var(--dk-color-accent);
	flex: none;
	display: inline-block;
}

.dk-trust__highlight {
	color: #ffffff;
	font-family: var(--dk-font-sans);
	font-size: 16px;
	font-weight: 700;
}

/* -------------------------------------------------------------
   7. Problem / Solution
   ------------------------------------------------------------- */
.dk-problem-solution {
	border-bottom: 1px solid var(--dk-color-border);
}

.dk-problem-solution__container {
	max-width: var(--dk-max-width);
	margin: 0 auto;
	padding: 78px 32px;
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
	gap: 56px;
}

.dk-card-problem {
	border-top: 2px solid var(--dk-color-dark);
	padding-top: 24px;
}

.dk-card-problem .dk-tag {
	margin-bottom: 16px;
}

.dk-problem__text {
	font-size: 19px;
	line-height: 1.55;
	color: var(--dk-color-dark-alt);
	margin: 0;
	max-width: 56ch;
}

.dk-card-solution {
	border-top: 2px solid var(--dk-color-accent);
	padding-top: 24px;
}

.dk-card-solution .dk-tag {
	margin-bottom: 16px;
}

.dk-solution__lead {
	font-size: 19px;
	line-height: 1.55;
	color: var(--dk-color-dark-alt);
	margin: 0 0 16px;
	max-width: 56ch;
}

.dk-solution__desc {
	font-family: var(--dk-font-mono);
	font-size: 14px;
	line-height: 1.8;
	color: var(--dk-color-text-dim);
	margin: 0;
	max-width: 56ch;
}

/* -------------------------------------------------------------
   8. Capabilities
   ------------------------------------------------------------- */
.dk-capabilities {
	border-bottom: 1px solid var(--dk-color-border);
}

.dk-capabilities__container {
	max-width: var(--dk-max-width);
	margin: 0 auto;
	padding: 78px 32px;
}

.dk-capabilities__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: 1px;
	background: var(--dk-color-border);
	margin-top: 26px;
	border: 1px solid var(--dk-color-border);
}

.dk-cap-card {
	background: #ffffff;
	border-top: 2px solid var(--dk-color-accent);
	padding: 32px 28px 36px;
	display: flex;
	flex-direction: column;
	gap: 14px;
	transition: background var(--dk-transition);
}

.dk-cap-card__num {
	font-family: var(--dk-font-mono);
	font-size: 12px;
	letter-spacing: 0.16em;
	color: var(--dk-color-num);
	margin: 0;
}

.dk-cap-card__title {
	font-size: 22px;
	font-weight: 700;
	letter-spacing: 0.02em;
	margin: 0;
}

.dk-cap-card__desc {
	font-family: var(--dk-font-mono);
	font-size: 13px;
	line-height: 1.8;
	color: var(--dk-color-text-dim);
	margin: 0;
}

.dk-cap-card__flag {
	font-size: 22px;
	font-weight: 700;
	color: var(--dk-color-accent);
	margin: auto 0 0;
}

/* -------------------------------------------------------------
   9. Proof Section
   ------------------------------------------------------------- */
.dk-proof {
	background: var(--dk-color-dark);
	color: #ffffff;
}

.dk-proof__container {
	max-width: var(--dk-max-width);
	margin: 0 auto;
	padding: 78px 32px;
}

.dk-proof__title {
	font-size: clamp(26px, 3vw, 36px);
	font-weight: 700;
	line-height: 1.12;
	margin: 0;
	max-width: 30ch;
	text-wrap: pretty;
}

.dk-proof__metrics {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	gap: 28px;
	margin: 44px 0 38px;
}

.dk-proof__metric {
	border-left: 2px solid var(--dk-color-accent);
	padding-left: 22px;
}

.dk-proof__metric-val {
	font-size: clamp(36px, 4.4vw, 54px);
	font-weight: 700;
	line-height: 1;
	margin: 0;
	color: #ffffff;
}

.dk-proof__metric-val--accent {
	color: var(--dk-color-accent);
}

.dk-proof__metric-label {
	font-family: var(--dk-font-mono);
	font-size: 11px;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--dk-color-text-light-dim);
	margin: 10px 0 0;
}

.dk-proof__text-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
	gap: 32px;
}

.dk-proof__text {
	font-family: var(--dk-font-mono);
	font-size: 14px;
	line-height: 1.8;
	color: var(--dk-color-text-light);
	margin: 0;
}

/* -------------------------------------------------------------
   10. Benefits (Why It Wins)
   ------------------------------------------------------------- */
.dk-benefits {
	border-bottom: 1px solid var(--dk-color-border);
}

.dk-benefits__container {
	max-width: var(--dk-max-width);
	margin: 0 auto;
	padding: 78px 32px;
}

.dk-benefits__grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
	gap: 38px;
	margin-top: 28px;
}

.dk-benefit-card {
	border-top: 1px solid var(--dk-color-dark);
	padding-top: 20px;
}

.dk-benefit-card__title {
	font-size: 20px;
	font-weight: 700;
	margin: 0 0 12px;
}

.dk-benefit-card__text {
	font-family: var(--dk-font-mono);
	font-size: 13px;
	line-height: 1.8;
	color: var(--dk-color-text-dim);
	margin: 0;
}

/* -------------------------------------------------------------
   11. Specifications Table
   ------------------------------------------------------------- */
.dk-specs {
	border-bottom: 1px solid var(--dk-color-border);
	background: var(--dk-color-gray-light);
}

.dk-specs__container {
	max-width: var(--dk-max-width);
	margin: 0 auto;
	padding: 78px 32px;
}

.dk-specs__table {
	margin-top: 26px;
	border: 1px solid var(--dk-color-border-specs);
	background: #ffffff;
}

.dk-specs__row {
	display: flex;
	flex-wrap: wrap;
	align-items: baseline;
	gap: 8px 24px;
	justify-content: space-between;
	padding: 18px 26px;
	border-bottom: 1px solid var(--dk-color-border);
}

.dk-specs__row--last {
	border-bottom: none;
}

.dk-specs__label {
	font-family: var(--dk-font-mono);
	font-size: 13px;
	color: var(--dk-color-text-dim);
}

.dk-specs__value {
	font-size: 18px;
	font-weight: 700;
	letter-spacing: 0.04em;
	color: var(--dk-color-accent);
}

.dk-specs__note {
	margin-top: 28px;
	border-top: 2px solid var(--dk-color-accent);
	padding-top: 16px;
	max-width: 66ch;
}

.dk-specs__note-tag {
	font-family: var(--dk-font-mono);
	font-size: 11px;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--dk-color-accent);
	margin: 0;
}

.dk-specs__note-text {
	font-family: var(--dk-font-mono);
	font-size: 13px;
	line-height: 1.8;
	color: var(--dk-color-text-muted);
	margin: 10px 0 0;
}

/* -------------------------------------------------------------
   12. FAQ Accordion
   ------------------------------------------------------------- */
.dk-faq {
	border-bottom: 1px solid var(--dk-color-border);
}

.dk-faq__container {
	max-width: var(--dk-max-width);
	margin: 0 auto;
	padding: 78px 32px;
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: 48px;
}

.dk-faq__title {
	font-size: clamp(26px, 3vw, 36px);
	font-weight: 700;
	line-height: 1.12;
	margin: 0;
}

.dk-faq__list {
	display: flex;
	flex-direction: column;
}

.dk-faq__item {
	border-top: 1px solid var(--dk-color-border);
}

.dk-faq__item--first {
	border-top: 1px solid var(--dk-color-dark);
}

.dk-faq__item--last {
	border-bottom: 1px solid var(--dk-color-border);
}

.dk-faq__summary {
	list-style: none;
	cursor: pointer;
	padding: 22px 0;
	font-size: 20px;
	font-weight: 700;
	letter-spacing: 0.01em;
	display: flex;
	justify-content: space-between;
	align-items: center;
	user-select: none;
	color: var(--dk-color-dark);
	transition: color var(--dk-transition);
}

.dk-faq__summary:hover {
	color: var(--dk-color-accent);
}

.dk-faq__icon {
	width: 14px;
	height: 14px;
	position: relative;
	flex-shrink: 0;
	margin-left: 16px;
	color: var(--dk-color-dark);
}

.dk-faq__icon::before,
.dk-faq__icon::after {
	content: "";
	position: absolute;
	background: currentColor;
	transition:
		transform 0.25s ease,
		opacity 0.25s ease;
}

.dk-faq__icon::before {
	top: 6px;
	left: 0;
	width: 14px;
	height: 2px;
}

.dk-faq__icon::after {
	top: 0;
	left: 6px;
	width: 2px;
	height: 14px;
}

details[open] .dk-faq__icon::after {
	transform: rotate(90deg);
	opacity: 0;
}

.dk-faq__content {
	overflow: hidden;
}

.dk-faq__answer {
	font-family: var(--dk-font-mono);
	font-size: 13px;
	line-height: 1.85;
	color: var(--dk-color-text-dim);
	margin: 0;
	padding: 0 0 24px;
	max-width: 72ch;
}

/* -------------------------------------------------------------
   13. CTA Section
   ------------------------------------------------------------- */
.dk-cta {
	background: var(--dk-color-dark);
	color: #ffffff;
	border-top: 2px solid var(--dk-color-accent);
}

.dk-cta__container {
	max-width: 760px;
	margin: 0 auto;
	padding: 84px 32px;
	text-align: center;
}

.dk-cta__title {
	font-size: clamp(32px, 4vw, 52px);
	font-weight: 700;
	line-height: 1.08;
	margin: 0 0 18px;
}

.dk-cta__desc {
	font-family: var(--dk-font-mono);
	font-size: 14px;
	line-height: 1.8;
	color: var(--dk-color-text-light);
	margin: 0 auto 34px;
	max-width: 52ch;
}

.dk-cta__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 14px;
	justify-content: center;
}

.dk-cta__subtext {
	font-family: var(--dk-font-mono);
	font-size: 13px;
	line-height: 1.8;
	color: var(--dk-color-text-light-dim);
	margin: 26px 0 0;
}

.dk-cta__subtext a {
	color: var(--dk-color-accent);
	font-weight: 500;
}

/* -------------------------------------------------------------
   14. Footer
   ------------------------------------------------------------- */
.dk-footer {
	background: var(--dk-color-dark);
	color: #ffffff;
	border-top: 1px solid var(--dk-color-border-dark);
}

/* Контейнер теперь флекс-колонка для переноса копирайта на новую строку */
.dk-footer__container {
	max-width: var(--dk-max-width);
	margin: 0 auto;
	padding: 34px 32px;
	display: flex;
	flex-direction: column;
	gap: 20px;
}

/* Верхняя строка с логотипом, слоганом и меню */
.dk-footer__row {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 32px;
}

.dk-footer__logo {
	font-size: 22px;
	font-weight: 700;
	letter-spacing: 0.14em;
	display: flex;
	align-items: center;
}

.dk-footer__tagline {
	font-family: var(--dk-font-mono);
	font-size: 11px;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--dk-color-text-light-dim);
}

/* Стили меню: одна строка и единый серый цвет */
.dk-footer__menu {
	display: flex;
	flex-wrap: nowrap;
	white-space: nowrap;
	gap: 20px;
	list-style: none;
	margin: 0;
	padding: 0;
}

.dk-footer__menu a {
	font-family: var(--dk-font-mono);
	font-size: 11px;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(
		--dk-color-text-light-dim
	); /* Тот же серый цвет, что и у dk-footer__tagline */
	text-decoration: none;
	transition: color 0.2s ease;
}

.dk-footer__menu a:hover {
	color: #ffffff;
}

/* Копирайт на новой строке */
.dk-footer__copy {
	font-family: var(--dk-font-mono);
	font-size: 11px;
	color: var(--dk-color-text-dim);
	text-align: center;
}

/* -------------------------------------------------------------
   15. Responsive Queries
   ------------------------------------------------------------- */
@media (max-width: 768px) {
	.dk-header__container,
	.dk-hero__container,
	.dk-trust__container,
	.dk-problem-solution__container,
	.dk-capabilities__container,
	.dk-proof__container,
	.dk-benefits__container,
	.dk-specs__container,
	.dk-faq__container,
	.dk-cta__container,
	.dk-footer__container {
		padding-left: 20px;
		padding-right: 20px;
	}

	.dk-hero__container {
		padding-top: 48px;
		padding-bottom: 48px;
		gap: 36px;
	}

	.dk-hero__title {
		font-size: 38px;
	}

	.dk-hero__lead {
		font-size: 18px;
	}

	.dk-trust__container {
		gap: 14px 28px;
	}

	.dk-problem-solution__container,
	.dk-capabilities__container,
	.dk-proof__container,
	.dk-benefits__container,
	.dk-specs__container,
	.dk-faq__container {
		padding-top: 56px;
		padding-bottom: 56px;
	}

	.dk-footer__container {
		flex-direction: column;
		align-items: center;
		gap: 12px;
	}

	.dk-header__nav-link {
		display: none;
	}

	.dk-footer__row {
		flex-direction: column;
		text-align: center;
		justify-content: center;
		margin: 0 auto;
	}
}

@media (max-width: 424px) {
	.dk-header__cta {
		display: none;
	}
}