:root {
	--aik-grid: linear-gradient(rgba(26, 31, 38, 0.035) 1px, transparent 1px),
		linear-gradient(90deg, rgba(26, 31, 38, 0.035) 1px, transparent 1px);
	--aik-wash: radial-gradient(1200px 600px at 12% -10%, rgba(15, 118, 110, 0.08), transparent 55%),
		radial-gradient(900px 500px at 88% 0%, rgba(51, 65, 85, 0.07), transparent 50%),
		linear-gradient(180deg, #eef2f6 0%, #e8ecf1 42%, #e4e9ef 100%);
}

body {
	background-image: var(--aik-grid), var(--aik-wash);
	background-size: 28px 28px, auto;
	background-attachment: fixed, scroll;
	min-height: 100vh;
}

.aik-site-header {
	position: sticky;
	top: 0;
	z-index: 20;
	backdrop-filter: blur(10px);
	background: color-mix(in srgb, var(--wp--preset--color--base) 82%, transparent);
	border-bottom: 1px solid color-mix(in srgb, var(--wp--preset--color--accent-5) 80%, transparent);
	transition: box-shadow 220ms ease, background-color 220ms ease;
}

.aik-site-header.is-scrolled {
	box-shadow: 0 8px 24px rgba(26, 31, 38, 0.06);
	background: color-mix(in srgb, var(--wp--preset--color--base) 92%, transparent);
}

.aik-hero {
	padding-block: clamp(3.5rem, 10vw, 7rem) clamp(2.5rem, 6vw, 4rem);
}

.aik-hero .wp-block-site-title {
	margin-bottom: 0.75rem;
}

.aik-hero .wp-block-site-tagline {
	max-width: 34rem;
}

.aik-post-list .wp-block-post {
	opacity: 0;
	transform: translateY(12px);
	transition: opacity 420ms ease, transform 420ms ease;
}

.aik-post-list .wp-block-post.is-visible {
	opacity: 1;
	transform: none;
}

.aik-post-list .wp-block-post + .wp-block-post {
	border-top: 1px solid var(--wp--preset--color--accent-5);
	padding-top: 1.75rem;
	margin-top: 1.75rem;
}

.entry-content pre,
.wp-block-code {
	overflow-x: auto;
	tab-size: 2;
}

.entry-content :where(table) {
	width: 100%;
	border-collapse: collapse;
	font-size: 0.95rem;
}

.entry-content :where(th, td) {
	border-bottom: 1px solid var(--wp--preset--color--accent-5);
	padding: 0.65rem 0.5rem;
	text-align: left;
}

.aik-classic-intro {
	max-width: 48rem;
	color: var(--wp--preset--color--accent-2);
	font-size: clamp(1rem, 1.8vw, 1.2rem);
}

.aik-ai-history {
	width: min(1120px, calc(100vw - 2rem));
	max-width: none;
	position: relative;
	left: 50%;
	margin: clamp(2rem, 5vw, 4rem) 0;
	transform: translateX(-50%);
	overflow: hidden;
	border: 1px solid rgba(59, 130, 246, 0.2);
	border-radius: 4px;
	background: #0a0e1a;
	box-shadow: 0 24px 80px rgba(10, 14, 26, 0.22);
}

.aik-ai-history__img,
.aik-ai-history svg {
	display: block;
	width: 100%;
	height: auto;
	aspect-ratio: 16 / 9;
	vertical-align: top;
}

.aik-classic-article {
	--aik-classic-ink: #182235;
	--aik-classic-muted: #667085;
	--aik-classic-blue: #2563eb;
	--aik-classic-soft: #eef4ff;
	max-width: 48rem;
	margin: clamp(2rem, 5vw, 3.5rem) auto 0;
	padding: clamp(1.75rem, 4vw, 3rem);
	background: #fff;
	border: 1px solid #e7eaf0;
	border-radius: 12px;
	box-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
	color: var(--aik-classic-ink);
	line-height: 1.9;
}

.aik-classic-kicker {
	color: var(--aik-classic-blue);
	font-size: 0.8125rem;
	font-weight: 800;
	letter-spacing: 0.18em;
	margin-bottom: 0.75rem;
}

.aik-classic-title {
	font-family: var(--wp--preset--font-family--source-serif), Georgia, "Songti SC", "SimSun", serif;
	font-size: clamp(1.75rem, 4vw, 2.75rem);
	line-height: 1.25;
	margin: 0 0 0.75rem;
	letter-spacing: -0.02em;
}

.aik-classic-subtitle {
	font-size: 1.125rem;
	color: var(--aik-classic-muted);
	margin: 0 0 1.5rem;
}

.aik-classic-tags {
	display: flex;
	flex-wrap: wrap;
	gap: 0.55rem;
	margin-bottom: 2rem;
}

.aik-classic-tag {
	background: var(--aik-classic-soft);
	border: 1px solid #dbe7ff;
	color: #163b82;
	border-radius: 999px;
	padding: 0.25rem 0.75rem;
	font-size: 0.8125rem;
	font-weight: 700;
}

.aik-classic-lead {
	font-family: var(--wp--preset--font-family--source-serif), Georgia, "Songti SC", "SimSun", serif;
	font-size: clamp(1.1rem, 2.2vw, 1.3rem);
	color: #26344d;
	border-left: 4px solid var(--aik-classic-blue);
	padding-left: 1.15rem;
	margin: 0 0 2rem;
}

.aik-classic-article h3 {
	font-family: var(--wp--preset--font-family--source-serif), Georgia, "Songti SC", "SimSun", serif;
	font-size: clamp(1.25rem, 2.6vw, 1.65rem);
	line-height: 1.4;
	margin: 2.5rem 0 1rem;
}

.aik-classic-article h3::after {
	content: "";
	display: block;
	width: 42px;
	height: 3px;
	background: var(--aik-classic-blue);
	margin-top: 0.65rem;
	border-radius: 3px;
}

.aik-classic-article p {
	font-size: 1.05rem;
	margin: 0 0 1.1rem;
}

.aik-classic-article strong {
	color: #101828;
}

.aik-classic-callout {
	margin: 1.75rem 0;
	padding: 1.35rem 1.5rem;
	background: linear-gradient(135deg, #f5f8ff, #fbfcff);
	border: 1px solid #dfe8fb;
	border-radius: 12px;
}

.aik-classic-big {
	font-family: var(--wp--preset--font-family--source-serif), Georgia, "Songti SC", "SimSun", serif;
	font-size: clamp(1.1rem, 2.2vw, 1.3rem);
	line-height: 1.7;
	font-weight: 700;
	color: #163b82;
}

.aik-classic-timeline {
	list-style: none;
	border-left: 2px solid #dbe4f5;
	margin: 1.5rem 0;
	padding: 0;
}

.aik-classic-timeline li {
	position: relative;
	padding: 0 0 1.25rem 1.4rem;
	font-size: 1.02rem;
}

.aik-classic-timeline li::before {
	content: "";
	position: absolute;
	left: -7px;
	top: 0.5rem;
	width: 12px;
	height: 12px;
	background: var(--aik-classic-blue);
	border-radius: 50%;
	box-shadow: 0 0 0 5px #edf3ff;
}

.aik-classic-year {
	color: var(--aik-classic-blue);
	font-weight: 800;
	font-size: 0.875rem;
	margin-bottom: 0.2rem;
}

.aik-classic-quote {
	margin: 1.75rem 0;
	padding: 1.5rem 1.65rem;
	background: #0b1220;
	color: #e8eefc;
	border-radius: 12px;
	border: 0;
	font-family: var(--wp--preset--font-family--source-serif), Georgia, "Songti SC", "SimSun", serif;
	font-size: clamp(1.05rem, 2vw, 1.2rem);
	line-height: 1.8;
}

.aik-classic-quote strong {
	color: #fff;
}

.aik-classic-quote span {
	display: block;
	color: #8fb5ff;
	font-size: 0.8125rem;
	margin-top: 0.55rem;
	font-family: var(--wp--preset--font-family--ibm-plex-sans), system-ui, sans-serif;
}

.aik-classic-note {
	margin-top: 2.5rem;
	padding-top: 1.25rem;
	border-top: 1px solid #e7eaf0;
	color: var(--aik-classic-muted);
	font-size: 0.8125rem;
	line-height: 1.7;
}

@media (max-width: 640px) {
	.aik-classic-article {
		padding: 1.5rem 1.15rem 2rem;
	}

	.aik-classic-article p {
		font-size: 1rem;
	}
}

@media (prefers-reduced-motion: reduce) {
	.aik-post-list .wp-block-post,
	.aik-site-header {
		transition: none;
	}

	.aik-post-list .wp-block-post {
		opacity: 1;
		transform: none;
	}
}

/* About: text left, logo right */
.aik-about-layout {
	gap: clamp(1.5rem, 4vw, 2.75rem) !important;
	align-items: center;
}

.aik-about-copy {
	font-size: clamp(1.05rem, 1.6vw, 1.2rem);
	line-height: 1.85;
	max-width: 36rem;
	margin: 0;
}

.aik-about-logo {
	margin: 0;
	display: flex;
	justify-content: center;
}

.aik-about-logo img {
	display: block;
	width: min(100%, 260px);
	height: auto;
	aspect-ratio: 1;
	object-fit: contain;
	padding: 1.2rem;
	margin-inline: auto;
	border-radius: 50%;
	background: #fff;
	border: 2px solid color-mix(in srgb, var(--aik-logo-signal, #c2410c) 22%, #cbd5e1);
	box-shadow:
		0 0 0 10px #fff,
		0 0 0 11.5px color-mix(in srgb, var(--aik-logo-signal, #c2410c) 35%, #94a3b8),
		0 14px 32px rgba(26, 31, 38, 0.09);
}

.aik-footer-domain {
	margin-top: 0.55rem;
	letter-spacing: 0.01em;
}

.aik-footer-domain a {
	text-decoration: none;
}

.aik-footer-domain a:hover {
	text-decoration: underline;
}

@media (max-width: 781px) {
	.aik-about-layout {
		flex-direction: column-reverse !important;
	}

	.aik-about-copy {
		text-align: left;
		max-width: none;
	}

	.aik-about-logo img {
		width: min(100%, 200px);
		padding: 1rem;
		box-shadow:
			0 0 0 7px #fff,
			0 0 0 8.5px color-mix(in srgb, var(--aik-logo-signal, #c2410c) 35%, #94a3b8),
			0 10px 22px rgba(26, 31, 38, 0.08);
	}
}