:root {
	--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
	--font-accent: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
	--radius-sm: 0.25rem;
	--radius-md: 1rem;
	--radius-lg: 1.5rem;
	--shadow-soft: 0 24px 48px -28px rgba(15, 26, 36, 0.4);
	--shadow-card: 0 18px 38px -30px rgba(15, 26, 36, 0.35);
	--content-width: min(1120px, calc(100vw - 32px));
}

html[data-theme="kilho"] {
	color-scheme: light;
	--color-base-100: #ffffff;
	--color-base-200: #f7f7f7;
	--color-base-300: #f0f0f0;
	--color-base-content: #212529;
	--color-body: #777777;
	--color-menu: #444444;
	--color-input: #495057;
	--color-input-line: #ced4da;
	--color-footer: #555555;
	--color-primary: #0088cc;
	--color-primary-strong: #0d2135;
	--color-primary-content: #ffffff;
	--color-secondary: #6c757d;
	--color-secondary-content: #ffffff;
	--color-info: #17a2b8;
	--color-info-content: #ffffff;
	--color-warning: #ffc107;
	--color-warning-content: #ffffff;
	--color-neutral: #1c2023;
	--color-neutral-content: #ffffff;
	--surface-highlight: rgba(255, 255, 255, 0.82);
	--surface-tint: rgba(247, 247, 247, 0.92);
	--hero-glow-a: rgba(0, 136, 204, 0.56);
	--hero-glow-b: rgba(43, 170, 177, 0.42);
	--hero-glow-c: rgba(94, 76, 214, 0.35);
}

html[data-theme="kilho-dark"] {
	color-scheme: dark;
	--color-base-100: #0f1a24;
	--color-base-200: #0b141c;
	--color-base-300: #1e3040;
	--color-base-content: #dbe4ec;
	--color-body: #a7b4c0;
	--color-menu: #c3cdd7;
	--color-input: #c3cdd7;
	--color-input-line: #2b3f52;
	--color-footer: #8d99a6;
	--color-primary: #0088cc;
	--color-primary-strong: #08111a;
	--color-primary-content: #ffffff;
	--color-secondary: #8b959e;
	--color-secondary-content: #0b141c;
	--color-info: #17a2b8;
	--color-info-content: #ffffff;
	--color-warning: #ffc107;
	--color-warning-content: #ffffff;
	--color-neutral: #08111a;
	--color-neutral-content: #dbe4ec;
	--surface-highlight: rgba(15, 26, 36, 0.78);
	--surface-tint: rgba(11, 20, 28, 0.88);
	--hero-glow-a: rgba(0, 136, 204, 0.48);
	--hero-glow-b: rgba(43, 170, 177, 0.34);
	--hero-glow-c: rgba(150, 90, 235, 0.28);
}

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

html {
	scroll-behavior: smooth;
}

body {
	margin: 0;
	font-family: var(--font-sans);
	font-size: 14px;
	line-height: 1.85;
	color: var(--color-body);
	background:
		radial-gradient(circle at top, rgba(0, 136, 204, 0.1), transparent 32%),
		linear-gradient(180deg, var(--color-base-100) 0%, var(--color-base-200) 100%);
}

a {
	color: inherit;
	text-decoration: none;
}

img {
	display: block;
	max-width: 100%;
}

button,
input,
select,
textarea {
	font: inherit;
	color: inherit;
}

.site-shell {
	min-height: 100vh;
}

.topbar {
	position: sticky;
	top: 0;
	z-index: 20;
	border-bottom: 1px solid rgba(240, 240, 240, 0.2);
	backdrop-filter: blur(18px);
	background: color-mix(in srgb, var(--surface-highlight) 88%, transparent);
}

.topbar__inner,
.container {
	width: var(--content-width);
	margin: 0 auto;
}

.topbar__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
	min-height: 72px;
}

.brand {
	display: inline-flex;
	align-items: center;
	gap: 0.85rem;
	font-weight: 700;
	color: var(--color-base-content);
}

.brand__mark {
	display: grid;
	place-items: center;
	width: 2.75rem;
	height: 2.75rem;
	border-radius: 1rem;
	background: linear-gradient(135deg, var(--color-primary), #2baab1);
	color: var(--color-primary-content);
	box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.brand__text {
	display: flex;
	flex-direction: column;
	line-height: 1.15;
}

.brand__eyebrow {
	font-size: 0.72rem;
	font-weight: 600;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--color-primary);
}

.topbar__actions {
	display: flex;
	align-items: center;
	gap: 0.75rem;
}

.theme-toggle {
	display: inline-flex;
	align-items: center;
	gap: 0.6rem;
	height: 2.65rem;
	padding: 0 1rem;
	border: 1px solid var(--color-base-300);
	border-radius: 999px;
	background: var(--surface-tint);
	color: var(--color-base-content);
	cursor: pointer;
	transition: transform 0.16s ease, border-color 0.16s ease, background-color 0.16s ease;
}

.theme-toggle:hover {
	transform: translateY(-1px);
	border-color: color-mix(in srgb, var(--color-primary) 40%, var(--color-base-300));
}

.theme-toggle__icon {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 1.4rem;
	height: 1.4rem;
}

.theme-toggle__icon:last-child,
html[data-theme="kilho-dark"] .theme-toggle__icon:first-child {
	display: none;
}

html[data-theme="kilho-dark"] .theme-toggle__icon:last-child {
	display: inline-flex;
}

.hero {
	position: relative;
	isolation: isolate;
	overflow: hidden;
	padding: 5.5rem 0 4.5rem;
	background: linear-gradient(135deg, #0d2135 0%, #123a5e 45%, #0b2a46 100%);
}

.hero::before,
.hero::after {
	content: "";
	position: absolute;
	inset: -30%;
	z-index: -1;
	background-repeat: no-repeat;
	will-change: transform;
}

.hero::before {
	background-image:
		radial-gradient(circle closest-side at 25% 35%, var(--hero-glow-a), transparent),
		radial-gradient(circle closest-side at 78% 30%, var(--hero-glow-b), transparent),
		radial-gradient(circle closest-side at 55% 78%, var(--hero-glow-c), transparent);
	background-size: 58% 72%, 46% 62%, 62% 66%;
	animation: hero-drift-a 18s linear infinite;
}

.hero::after {
	background-image:
		radial-gradient(circle closest-side at 14% 72%, rgba(0, 180, 255, 0.34), transparent),
		radial-gradient(circle closest-side at 88% 62%, rgba(150, 90, 235, 0.26), transparent);
	background-size: 52% 62%, 56% 60%;
	animation: hero-drift-b 14s linear infinite;
}

.hero__content {
	width: var(--content-width);
	margin: 0 auto;
	display: grid;
	grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
	gap: 2rem;
	align-items: center;
}

.eyebrow {
	display: inline-flex;
	align-items: center;
	gap: 0.55rem;
	padding: 0.45rem 0.85rem;
	border: 1px solid rgba(255, 255, 255, 0.18);
	border-radius: 999px;
	background: rgba(255, 255, 255, 0.08);
	color: rgba(255, 255, 255, 0.8);
	font-size: 0.78rem;
	font-weight: 700;
	letter-spacing: 0.08em;
	text-transform: uppercase;
}

.hero h1 {
	margin: 1rem 0 1rem;
	color: #ffffff;
	font-family: var(--font-accent);
	font-size: clamp(2.6rem, 6vw, 4.4rem);
	font-weight: 500;
	line-height: 0.98;
	letter-spacing: -0.04em;
}

.hero p {
	margin: 0;
	max-width: 42rem;
	color: rgba(255, 255, 255, 0.82);
	font-size: 1.03rem;
}

.hero__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.85rem;
	margin-top: 1.8rem;
}

.hero-card {
	padding: 1.5rem;
	border: 1px solid rgba(255, 255, 255, 0.12);
	border-radius: 1.4rem;
	background: rgba(7, 18, 29, 0.34);
	box-shadow: var(--shadow-soft);
	backdrop-filter: blur(12px);
	color: rgba(255, 255, 255, 0.88);
}

.hero-card__label {
	font-size: 0.82rem;
	font-weight: 700;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: rgba(255, 255, 255, 0.66);
}

.hero-card__value {
	margin: 0.6rem 0 0;
	font-size: 2rem;
	font-weight: 700;
	line-height: 1.1;
}

.hero-card__meta {
	margin-top: 0.7rem;
	color: rgba(255, 255, 255, 0.72);
	font-size: 0.92rem;
}

.section {
	padding: 5rem 0;
}

.section--tight {
	padding-top: 2rem;
}

.section-title {
	margin: 0 0 0.9rem;
	color: var(--color-base-content);
	font-size: clamp(1.7rem, 3vw, 2.2rem);
	line-height: 1.15;
	letter-spacing: -0.04em;
}

.section-copy {
	margin: 0;
	max-width: 46rem;
	font-size: 1rem;
}

.grid {
	display: grid;
	gap: 1rem;
}

.grid--cards {
	grid-template-columns: repeat(3, minmax(0, 1fr));
	margin-top: 2rem;
}

.card {
	height: 100%;
	padding: 1.45rem;
	border: 1px solid var(--color-base-300);
	border-radius: 1.25rem;
	background: color-mix(in srgb, var(--color-base-100) 92%, transparent);
	box-shadow: var(--shadow-card);
	transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.card:hover {
	transform: translateY(-4px);
	border-color: color-mix(in srgb, var(--color-primary) 44%, var(--color-base-300));
	box-shadow: 0 28px 46px -32px rgba(0, 136, 204, 0.34);
}

.card__icon {
	display: inline-grid;
	place-items: center;
	width: 3rem;
	height: 3rem;
	border-radius: 0.95rem;
	background: color-mix(in srgb, var(--color-primary) 10%, var(--color-base-100));
	color: var(--color-primary);
}

.card__title {
	margin: 1rem 0 0.45rem;
	color: var(--color-base-content);
	font-size: 1.15rem;
	font-weight: 700;
	line-height: 1.3;
}

.card__text {
	margin: 0;
}

.showcase {
	display: grid;
	grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
	gap: 1.5rem;
	margin-top: 2.25rem;
}

.panel {
	padding: 1.5rem;
	border: 1px solid var(--color-base-300);
	border-radius: 1.5rem;
	background: color-mix(in srgb, var(--surface-tint) 96%, transparent);
}

.panel__title {
	margin: 0;
	color: var(--color-base-content);
	font-size: 1.05rem;
	font-weight: 700;
}

.panel__copy {
	margin: 0.6rem 0 0;
}

.stack {
	display: grid;
	gap: 0.9rem;
	margin-top: 1.2rem;
}

.feature {
	display: grid;
	grid-template-columns: auto 1fr;
	gap: 0.9rem;
	align-items: start;
	padding: 1rem 1.05rem;
	border-radius: 1rem;
	background: var(--color-base-100);
	border: 1px solid var(--color-base-300);
}

.feature__dot {
	width: 0.85rem;
	height: 0.85rem;
	border-radius: 999px;
	margin-top: 0.35rem;
	background: linear-gradient(135deg, var(--color-primary), #2baab1);
	box-shadow: 0 0 0 0.35rem color-mix(in srgb, var(--color-primary) 12%, transparent);
}

.feature__title {
	margin: 0;
	color: var(--color-base-content);
	font-size: 1rem;
	font-weight: 700;
}

.feature__text {
	margin: 0.35rem 0 0;
}

.stats {
	display: grid;
	gap: 0.9rem;
}

.stat {
	padding: 1.2rem 1.25rem;
	border: 1px solid var(--color-base-300);
	border-radius: 1.15rem;
	background: var(--color-base-100);
}

.stat__label {
	display: block;
	font-size: 0.78rem;
	font-weight: 700;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--color-primary);
}

.stat__value {
	display: block;
	margin-top: 0.45rem;
	color: var(--color-base-content);
	font-size: 1.75rem;
	font-weight: 700;
	line-height: 1.1;
}

.stat__meta {
	display: block;
	margin-top: 0.35rem;
	font-size: 0.92rem;
}

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.55rem;
	min-height: 2.9rem;
	padding: 0.75rem 1.1rem;
	border: 1px solid var(--color-base-300);
	border-radius: 0.8rem;
	background: var(--color-base-200);
	color: var(--color-base-content);
	font-size: 0.92rem;
	font-weight: 700;
	transition: transform 0.16s ease, border-color 0.16s ease, background-color 0.16s ease, color 0.16s ease;
}

.btn:hover {
	transform: translateY(-1px);
}

.btn--primary {
	border-color: var(--color-primary);
	background: var(--color-primary);
	color: var(--color-primary-content);
}

.btn--secondary {
	border-color: var(--color-secondary);
	background: var(--color-secondary);
	color: var(--color-secondary-content);
}

.btn--ghost {
	background: transparent;
	color: inherit;
}

.btn--ghost:hover {
	border-color: currentColor;
	background: color-mix(in srgb, currentColor 10%, transparent);
}

.hero .btn--ghost {
	border-color: rgba(255, 255, 255, 0.34);
	color: #ffffff;
	background: rgba(255, 255, 255, 0.04);
}

.hero .btn--ghost:hover {
	border-color: #ffffff;
	background: rgba(255, 255, 255, 0.14);
}

.btn--pill {
	border-radius: 999px;
}

.badge {
	display: inline-flex;
	align-items: center;
	gap: 0.45rem;
	padding: 0.4rem 0.7rem;
	border-radius: 999px;
	background: color-mix(in srgb, var(--color-primary) 10%, var(--color-base-100));
	color: var(--color-primary);
	font-size: 0.78rem;
	font-weight: 700;
}

.footer {
	padding: 2rem 0 3rem;
	border-top: 1px solid var(--color-base-300);
	color: var(--color-footer);
}

.footer__inner {
	width: var(--content-width);
	margin: 0 auto;
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	gap: 1rem;
}

@keyframes hero-drift-a {
	0% {
		transform: translate(-7%, -5%) scale(1.05);
	}

	33% {
		transform: translate(5%, 2%) scale(1.22);
	}

	66% {
		transform: translate(2%, 7%) scale(1.12);
	}

	100% {
		transform: translate(-7%, -5%) scale(1.05);
	}
}

@keyframes hero-drift-b {
	0% {
		opacity: 0.8;
		transform: translate(6%, 4%) scale(1.18);
	}

	35% {
		opacity: 1;
		transform: translate(-4%, -2%) scale(0.96);
	}

	70% {
		opacity: 0.88;
		transform: translate(-6%, 5%) scale(1.08);
	}

	100% {
		opacity: 0.8;
		transform: translate(6%, 4%) scale(1.18);
	}
}

@media (prefers-reduced-motion: reduce) {
	html {
		scroll-behavior: auto;
	}

	*,
	*::before,
	*::after {
		animation: none !important;
		transition: none !important;
	}
}

@media (max-width: 960px) {
	.hero__content,
	.showcase,
	.grid--cards {
		grid-template-columns: 1fr;
	}
}

@media (max-width: 640px) {
	.hero {
		padding-top: 4.5rem;
	}

	.topbar__inner {
		min-height: 64px;
	}

	.topbar__actions {
		gap: 0.5rem;
	}

	.theme-toggle {
		padding-inline: 0.85rem;
	}

	.section {
		padding: 4rem 0;
	}
}