.x4a-not-found {
	--x4a-404-bg: var(--x4a-bg, #070a0e);
	--x4a-404-panel: var(--x4a-surface, rgba(15, 20, 27, 0.84));
	--x4a-404-text: var(--x4a-text, #f4f7fb);
	--x4a-404-muted: var(--x4a-muted, #8d9aaa);
	--x4a-404-line: var(--x4a-border, rgba(255, 255, 255, 0.09));
	--x4a-404-accent: var(--x4a-accent, #35e5a1);
	--x4a-404-accent-soft: rgba(53, 229, 161, 0.16);
	position: relative;
	min-height: calc(100vh - 4.5rem);
	overflow: hidden;
	background:
		radial-gradient(circle at 76% 34%, rgba(53, 229, 161, 0.09), transparent 25rem),
		radial-gradient(circle at 15% 56%, rgba(87, 124, 255, 0.06), transparent 30rem),
		var(--x4a-404-bg);
	color: var(--x4a-404-text);
	font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.x4a-not-found *,
.x4a-not-found *::before,
.x4a-not-found *::after {
	box-sizing: border-box;
}

html[data-x4a-theme="light"] .x4a-not-found {
	--x4a-404-bg: #f4f7f8;
	--x4a-404-panel: rgba(255, 255, 255, 0.90);
	--x4a-404-text: #0b1117;
	--x4a-404-muted: #64717e;
	--x4a-404-line: rgba(11, 17, 23, 0.12);
	--x4a-404-accent: #0b9d72;
	--x4a-404-accent-soft: rgba(11, 157, 114, 0.12);
	background:
		radial-gradient(circle at 76% 34%, rgba(11, 157, 114, 0.08), transparent 25rem),
		radial-gradient(circle at 15% 56%, rgba(87, 124, 255, 0.05), transparent 30rem),
		var(--x4a-404-bg);
}

.x4a-not-found__topbar {
	position: relative;
	z-index: 20;
}

.x4a-not-found__stage {
	position: relative;
	display: grid;
	grid-template-columns: minmax(0, 1.18fr) minmax(16rem, 0.82fr);
	align-items: center;
	gap: clamp(2rem, 5vw, 5rem);
	width: min(1120px, calc(100% - 2rem));
	min-height: clamp(34rem, 69vh, 45rem);
	margin: 0 auto;
	padding: clamp(2.8rem, 6vw, 5rem) 0 clamp(3rem, 6vw, 5rem);
}

.x4a-not-found__grid {
	position: absolute;
	inset: 0;
	pointer-events: none;
	opacity: 0.24;
	background-image:
		linear-gradient(var(--x4a-404-line) 1px, transparent 1px),
		linear-gradient(90deg, var(--x4a-404-line) 1px, transparent 1px);
	background-size: 48px 48px;
	mask-image: linear-gradient(to bottom, transparent, #000 14%, #000 84%, transparent);
}

.x4a-not-found__glow {
	position: absolute;
	top: 14%;
	left: -13%;
	width: 29rem;
	height: 29rem;
	border-radius: 50%;
	background: var(--x4a-404-accent-soft);
	filter: blur(110px);
	pointer-events: none;
}

.x4a-not-found__content {
	position: relative;
	z-index: 3;
}

.x4a-not-found__eyebrow {
	display: flex;
	align-items: center;
	gap: 0.7rem;
	margin-bottom: 1.1rem;
	font-size: 0.7rem;
	font-weight: 800;
	letter-spacing: 0.17em;
	text-transform: uppercase;
	color: var(--x4a-404-muted);
}

.x4a-not-found__signal {
	padding-left: 0.65rem;
	border-left: 1px solid var(--x4a-404-line);
	color: var(--x4a-404-accent);
}

.x4a-not-found__pulse {
	width: 0.5rem;
	height: 0.5rem;
	border-radius: 50%;
	background: var(--x4a-404-accent);
	box-shadow: 0 0 0 0 var(--x4a-404-accent-soft);
	animation: x4a-404-pulse 1.9s ease-out infinite;
}

.x4a-not-found__code {
	margin: 0 0 -0.2rem;
	font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
	font-size: clamp(5rem, 11vw, 8.5rem);
	font-weight: 850;
	line-height: 0.9;
	letter-spacing: -0.075em;
	color: transparent;
	-webkit-text-stroke: 1px color-mix(in srgb, var(--x4a-404-text) 16%, transparent);
	text-shadow: 0 0 3rem rgba(53, 229, 161, 0.08);
	user-select: none;
}

.x4a-not-found h1 {
	max-width: 13ch;
	margin: 0;
	font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
	font-size: clamp(2.5rem, 4.8vw, 4.5rem);
	font-weight: 800;
	line-height: 0.98;
	letter-spacing: -0.052em;
	color: var(--x4a-404-text);
	text-wrap: balance;
}

.x4a-not-found__copy {
	max-width: 39rem;
	margin: 1.15rem 0 0;
	font-size: clamp(0.98rem, 1.25vw, 1.14rem);
	font-weight: 450;
	line-height: 1.65;
	color: var(--x4a-404-muted);
}

.x4a-not-found__route {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.55rem 0.8rem;
	margin-top: 1.35rem;
	color: var(--x4a-404-muted);
	font-size: 0.78rem;
}

.x4a-not-found__route-label,
.x4a-not-found__search-label {
	font-weight: 750;
	text-transform: uppercase;
	letter-spacing: 0.08em;
}

.x4a-not-found__route code {
	max-width: 100%;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
	padding: 0.4rem 0.62rem;
	border: 1px solid var(--x4a-404-line);
	border-radius: 0.52rem;
	background: color-mix(in srgb, var(--x4a-404-panel) 68%, transparent);
	color: var(--x4a-404-text);
	font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.x4a-not-found__search {
	max-width: 42rem;
	margin-top: 1.55rem;
}

.x4a-not-found__search-label {
	display: block;
	margin-bottom: 0.55rem;
	font-size: 0.67rem;
	color: var(--x4a-404-muted);
}

.x4a-not-found__search-row {
	display: grid;
	grid-template-columns: minmax(0, 1fr) auto;
	gap: 0.6rem;
}

.x4a-not-found__search input[type="search"] {
	width: 100%;
	min-width: 0;
	min-height: 3rem;
	padding: 0.72rem 0.9rem;
	border: 1px solid var(--x4a-404-line);
	border-radius: 0.7rem;
	outline: none;
	background: var(--x4a-404-panel);
	color: var(--x4a-404-text);
	font: inherit;
	box-shadow: none;
}

.x4a-not-found__search input[type="search"]::placeholder {
	color: var(--x4a-404-muted);
	opacity: 0.88;
}

.x4a-not-found__search input[type="search"]:focus {
	border-color: color-mix(in srgb, var(--x4a-404-accent) 65%, transparent);
	box-shadow: 0 0 0 3px var(--x4a-404-accent-soft);
}

.x4a-not-found__search button,
.x4a-not-found__button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-height: 3rem;
	padding: 0.72rem 1.05rem;
	border: 1px solid var(--x4a-404-line);
	border-radius: 0.7rem;
	font-family: inherit;
	font-size: 0.86rem;
	font-weight: 750;
	text-decoration: none;
	cursor: pointer;
	transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.x4a-not-found__search button {
	border-color: color-mix(in srgb, var(--x4a-404-accent) 45%, transparent);
	background: var(--x4a-404-accent);
	color: #04110d;
}

.x4a-not-found__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.7rem;
	margin-top: 0.8rem;
}

.x4a-not-found__button {
	background: color-mix(in srgb, var(--x4a-404-panel) 72%, transparent);
	color: var(--x4a-404-text);
}

.x4a-not-found__button:hover,
.x4a-not-found__button:focus-visible,
.x4a-not-found__search button:hover,
.x4a-not-found__search button:focus-visible {
	transform: translateY(-1px);
}

.x4a-not-found__button--primary {
	border-color: color-mix(in srgb, var(--x4a-404-accent) 38%, transparent);
}

.x4a-not-found__terminal {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: 1px;
	max-width: 44rem;
	margin-top: 1.55rem;
	overflow: hidden;
	border: 1px solid var(--x4a-404-line);
	border-radius: 0.8rem;
	background: var(--x4a-404-line);
}

.x4a-not-found__terminal > div {
	min-width: 0;
	padding: 0.76rem 0.82rem;
	background: var(--x4a-404-panel);
}

.x4a-not-found__terminal span,
.x4a-not-found__terminal strong {
	display: block;
}

.x4a-not-found__terminal span {
	margin-bottom: 0.22rem;
	font-size: 0.59rem;
	font-weight: 800;
	letter-spacing: 0.12em;
	color: var(--x4a-404-muted);
}

.x4a-not-found__terminal strong {
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
	font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
	font-size: 0.71rem;
	font-weight: 800;
	letter-spacing: 0.025em;
	color: var(--x4a-404-text);
}

.x4a-not-found__orbital {
	position: relative;
	z-index: 2;
	width: min(30vw, 23rem);
	aspect-ratio: 1;
	justify-self: center;
	border-radius: 50%;
	background:
		radial-gradient(circle, var(--x4a-404-accent-soft), transparent 28%),
		radial-gradient(circle, color-mix(in srgb, var(--x4a-404-text) 2%, transparent), transparent 60%);
}

.x4a-not-found__ring {
	position: absolute;
	inset: 10%;
	border: 1px solid color-mix(in srgb, var(--x4a-404-text) 12%, transparent);
	border-radius: 50%;
}

.x4a-not-found__ring::before,
.x4a-not-found__ring::after {
	content: "";
	position: absolute;
	width: 0.52rem;
	height: 0.52rem;
	border-radius: 50%;
	background: var(--x4a-404-accent);
	box-shadow: 0 0 1.2rem var(--x4a-404-accent-soft);
}

.x4a-not-found__ring::before {
	top: 17%;
	right: 6%;
}

.x4a-not-found__ring::after {
	bottom: 7%;
	left: 21%;
	opacity: 0.5;
}

.x4a-not-found__ring--one {
	animation: x4a-404-spin 18s linear infinite;
}

.x4a-not-found__ring--two {
	inset: 24%;
	border-style: dashed;
	opacity: 0.55;
	animation: x4a-404-spin-reverse 24s linear infinite;
}

.x4a-not-found__node {
	position: absolute;
	inset: 37%;
	display: grid;
	place-items: center;
	border: 1px solid color-mix(in srgb, var(--x4a-404-accent) 35%, transparent);
	border-radius: 50%;
	background: var(--x4a-404-panel);
	box-shadow:
		0 0 0 1rem color-mix(in srgb, var(--x4a-404-accent) 3%, transparent),
		0 0 4rem var(--x4a-404-accent-soft);
	font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
	font-size: clamp(1.2rem, 2.4vw, 1.9rem);
	font-weight: 850;
	letter-spacing: -0.05em;
	color: var(--x4a-404-accent);
}

.x4a-not-found__ticker {
	position: relative;
	z-index: 8;
	overflow: hidden;
	border-top: 1px solid var(--x4a-404-line);
	border-bottom: 1px solid var(--x4a-404-line);
	background: color-mix(in srgb, var(--x4a-404-bg) 92%, transparent);
}

.x4a-not-found__ticker-track {
	display: flex;
	width: max-content;
	animation: x4a-404-tape 28s linear infinite;
	will-change: transform;
}

.x4a-not-found__ticker-group {
	display: flex;
	flex: 0 0 auto;
	align-items: center;
	gap: 2.7rem;
	padding: 0.58rem 2.7rem 0.58rem 0;
	font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
	font-size: 0.68rem;
	font-weight: 800;
	letter-spacing: 0.075em;
	color: var(--x4a-404-muted);
	white-space: nowrap;
}

.x4a-not-found__ticker-group span:nth-child(odd) {
	color: var(--x4a-404-accent);
}

.x4a-not-found__footer {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	justify-content: space-between;
	gap: 0.55rem 1.4rem;
	width: 100%;
	padding: 0.78rem clamp(1rem, 3vw, 2.5rem);
	border-top: 1px solid var(--x4a-404-line);
	background: var(--x4a-404-bg);
	color: var(--x4a-404-muted);
	font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
	font-size: 0.64rem;
	font-weight: 750;
	letter-spacing: 0.06em;
	text-transform: uppercase;
}

@keyframes x4a-404-pulse {
	0% { box-shadow: 0 0 0 0 var(--x4a-404-accent-soft); }
	75%, 100% { box-shadow: 0 0 0 0.7rem transparent; }
}

@keyframes x4a-404-spin {
	to { transform: rotate(360deg); }
}

@keyframes x4a-404-spin-reverse {
	to { transform: rotate(-360deg); }
}

@keyframes x4a-404-tape {
	to { transform: translateX(-50%); }
}

@media (max-width: 840px) {
	.x4a-not-found__stage {
		grid-template-columns: 1fr;
		min-height: auto;
		padding-top: 3rem;
		padding-bottom: 4rem;
	}

	.x4a-not-found__orbital {
		position: absolute;
		top: 18%;
		right: -6rem;
		width: 18rem;
		opacity: 0.22;
	}

	.x4a-not-found__content {
		max-width: 44rem;
	}

	.x4a-not-found__terminal {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

@media (max-width: 620px) {
	.x4a-not-found__search-row {
		grid-template-columns: 1fr;
	}

	.x4a-not-found__search button {
		width: 100%;
	}
}

@media (max-width: 520px) {
	.x4a-not-found__stage {
		width: min(100% - 1.2rem, 1120px);
		padding-top: 2.4rem;
		padding-bottom: 3.5rem;
	}

	.x4a-not-found__code {
		font-size: clamp(4.8rem, 25vw, 7rem);
	}

	.x4a-not-found h1 {
		font-size: clamp(2.15rem, 11vw, 3.3rem);
	}

	.x4a-not-found__actions {
		display: grid;
		grid-template-columns: 1fr;
	}

	.x4a-not-found__button {
		width: 100%;
	}

	.x4a-not-found__terminal {
		grid-template-columns: 1fr 1fr;
	}

	.x4a-not-found__footer {
		justify-content: flex-start;
	}
}

@media (prefers-reduced-motion: reduce) {
	.x4a-not-found__pulse,
	.x4a-not-found__ring,
	.x4a-not-found__ticker-track {
		animation: none !important;
	}
}


/* 72C3D-R6 canonical inner-width contract */
.x4a-not-found__inner {
	width: min(1320px, calc(100% - 32px));
	margin: 0 auto;
	padding: 20px 0 42px;
}

.x4a-not-found__inner .x4a-not-found__stage {
	width: min(1120px, 100%);
}

.x4a-not-found__inner .x4a-not-found__ticker,
.x4a-not-found__inner .x4a-not-found__footer {
	width: 100%;
}

@media (max-width: 520px) {
	.x4a-not-found__inner {
		width: min(100% - 20px, 1320px);
		padding-top: 12px;
		padding-bottom: 28px;
	}
}


/* 72C3D-R7 Search Intelligence flow guard */
/*
 * On the short 404 recovery surface the instant-search panel must participate
 * in normal document flow instead of floating over ticker/status/legal areas.
 * Long result sets remain viewport-bounded and scroll inside the panel.
 */
.x4a-not-found__search [aria-label="Search intelligence"] {
	position: relative !important;
	inset: auto !important;
	top: auto !important;
	right: auto !important;
	bottom: auto !important;
	left: auto !important;
	transform: none !important;
	width: 100% !important;
	max-width: none !important;
	max-height: min(45vh, 380px);
	margin-top: 0.6rem;
	overflow-x: hidden;
	overflow-y: auto;
	overscroll-behavior: contain;
	box-sizing: border-box;
	z-index: 4;
}

@media (max-width: 620px) {
	.x4a-not-found__search [aria-label="Search intelligence"] {
		max-height: min(48vh, 340px);
	}
}