:root {
	color-scheme: dark;
	--ink: #0b0d0f;
	--paper: #f3f1ea;
	--muted: #a7afb5;
	--line: rgba(243, 241, 234, 0.24);
	--signal: #b8ff2c;
	--coral: #ff6647;
}

* {
	box-sizing: border-box;
}

html {
	background: var(--ink);
	scroll-behavior: smooth;
}

body {
	margin: 0;
	min-width: 320px;
	min-height: 100vh;
	background: var(--ink);
	color: var(--paper);
	font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
	font-size: 16px;
	line-height: 1.7;
}

a {
	color: inherit;
}

::selection {
	background: var(--signal);
	color: var(--ink);
}

.skip-link {
	position: fixed;
	top: 12px;
	left: 12px;
	z-index: 20;
	padding: 9px 14px;
	background: var(--paper);
	color: var(--ink);
	font-weight: 700;
	transform: translateY(-160%);
}

.skip-link:focus {
	transform: translateY(0);
}

.site-shell {
	position: relative;
	isolation: isolate;
	min-height: 100svh;
	overflow: hidden;
	background: rgba(11, 13, 15, 0.9);
}

.backdrop {
	position: fixed;
	inset: 0;
	z-index: -3;
	width: 100%;
	height: 100%;
	object-fit: cover;
	image-rendering: pixelated;
	filter: saturate(0.45) contrast(1.4);
	opacity: 0.38;
	transform: scale(1.02);
}

.pixel-grid {
	position: fixed;
	inset: 0;
	z-index: -2;
	pointer-events: none;
	background-image:
		linear-gradient(rgba(184, 255, 44, 0.06) 1px, transparent 1px),
		linear-gradient(90deg, rgba(184, 255, 44, 0.06) 1px, transparent 1px);
	background-size: 32px 32px;
	box-shadow: inset 0 0 0 12px rgba(11, 13, 15, 0.48);
}

.topbar {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
	min-height: 76px;
	padding: 18px 32px;
	border-bottom: 1px solid var(--line);
	font-family: Consolas, "Courier New", monospace;
	font-size: 0.78rem;
	font-weight: 700;
	line-height: 1.2;
}

.wordmark {
	display: inline-flex;
	align-items: center;
	gap: 12px;
	text-decoration: none;
}

.wordmark-mark {
	display: block;
	width: 14px;
	height: 14px;
	background: var(--signal);
	box-shadow: 6px 6px 0 var(--coral);
}

.status {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	color: var(--muted);
}

.status span {
	width: 7px;
	height: 7px;
	background: var(--signal);
	box-shadow: 0 0 0 3px rgba(184, 255, 44, 0.16);
}

.portal {
	display: grid;
	grid-template-columns: minmax(0, 1.08fr) minmax(420px, 0.92fr);
	align-items: end;
	gap: 72px;
	width: min(100%, 1440px);
	min-height: calc(100svh - 132px);
	margin: 0 auto;
	padding: 64px 32px 44px;
}

.identity {
	align-self: center;
	max-width: 760px;
}

.eyebrow {
	margin: 0 0 18px;
	color: var(--signal);
	font-family: Consolas, "Courier New", monospace;
	font-size: 0.8rem;
	font-weight: 700;
}

.eyebrow::before {
	content: "[ ";
	color: var(--coral);
}

.eyebrow::after {
	content: " ]";
	color: var(--coral);
}

h1 {
	display: flex;
	gap: 16px;
	margin: 0;
	font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
	font-size: 7.5rem;
	font-weight: 800;
	line-height: 0.95;
	letter-spacing: 0;
}

h1 span:last-child {
	-webkit-text-stroke: 2px var(--paper);
	color: transparent;
}

.statement {
	max-width: 720px;
	margin-top: 42px;
	padding-left: 22px;
	border-left: 6px solid var(--coral);
	color: #d9dde0;
}

.statement p {
	margin: 0;
}

.statement p + p {
	margin-top: 12px;
}

.route-list {
	border-bottom: 1px solid var(--line);
}

.route-list a {
	display: grid;
	grid-template-columns: 54px 1fr 40px;
	align-items: center;
	gap: 16px;
	min-height: 104px;
	padding: 12px 8px;
	border-top: 1px solid var(--line);
	text-decoration: none;
	transition: background-color 160ms ease, color 160ms ease, padding 160ms ease;
}

.route-list a:hover,
.route-list a:focus-visible {
	padding-right: 0;
	padding-left: 16px;
	background: var(--signal);
	color: var(--ink);
	outline: none;
}

.route-number {
	color: var(--muted);
	font-family: Consolas, "Courier New", monospace;
	font-size: 0.74rem;
}

.route-list a:hover .route-number,
.route-list a:focus-visible .route-number {
	color: var(--ink);
}

.route-list strong {
	font-size: 1.35rem;
	font-weight: 700;
}

.route-arrow {
	font-size: 1.35rem;
	text-align: center;
}

footer {
	padding: 0 32px 20px;
	color: var(--muted);
	font-family: Consolas, "Courier New", monospace;
	font-size: 0.68rem;
}

footer p {
	margin: 0;
}

@media (max-width: 900px) {
	.site-shell {
		overflow: visible;
	}

	.portal {
		display: block;
		min-height: auto;
		padding-top: 72px;
	}

	.identity {
		margin-bottom: 64px;
	}

	.route-list {
		max-width: 720px;
	}
}

@media (max-width: 560px) {
	.topbar {
		min-height: 64px;
		padding: 16px 18px;
	}

	.status {
		font-size: 0;
	}

	.portal {
		padding: 48px 18px 36px;
	}

	h1 {
		gap: 10px;
		font-size: 4.75rem;
	}

	.statement {
		margin-top: 32px;
		padding-left: 16px;
		font-size: 0.95rem;
	}

	.identity {
		margin-bottom: 48px;
	}

	.route-list a {
		grid-template-columns: 38px 1fr 32px;
		min-height: 82px;
		gap: 10px;
	}

	.route-list strong {
		font-size: 1.08rem;
	}

	footer {
		padding: 0 18px 18px;
	}
}

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

	.route-list a {
		transition: none;
	}
}