:root {
	--bg-top: #010204;
	--bg-mid: #060217;
	--bg-bottom: #1f0142;
	--text-main: #f6f7ff;
	--text-sub: rgba(230, 233, 255, 0.82);
	--panel: rgba(3, 4, 18, 0.48);
	--glow: rgba(84, 30, 155, 0.22);
}

* {
	box-sizing: border-box;
}

html,
body {
	margin: 0;
	width: 100%;
	height: 100%;
	overflow: hidden;
	background: var(--bg-top);
	color: var(--text-main);
}

body {
	font-family: "Montserrat", sans-serif;
}

.screen {
	position: fixed;
	inset: 0;
	width: 100%;
	height: 100svh;
	display: grid;
	place-items: center;
	background: linear-gradient(to bottom, var(--bg-top) 0%, var(--bg-mid) 43%, var(--bg-bottom) 100%);
	isolation: isolate;
}

.screen::before,
.screen::after {
	content: "";
	position: absolute;
	inset: -15%;
	pointer-events: none;
	z-index: -1;
}

.screen::before {
	background:
		radial-gradient(circle at 50% 70%, var(--glow), transparent 46%),
		radial-gradient(circle at 50% 20%, rgba(255, 255, 255, 0.04), transparent 38%);
	animation: haze 7s ease-in-out infinite alternate;
}

.screen::after {
	background: linear-gradient(
		175deg,
		rgba(255, 255, 255, 0.05) 0%,
		transparent 30%,
		transparent 72%,
		rgba(106, 24, 185, 0.2) 100%
	);
	mix-blend-mode: screen;
	opacity: 0.6;
}

.hero {
	width: min(96vw, 1080px);
	height: min(86svh, 760px);
	display: flex;
	align-items: center;
	justify-content: center;
	padding: clamp(18px, 3vw, 44px);
	background: transparent;
	text-align: center;
}

.hero-content {
	width: min(100%, 760px);
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: clamp(14px, 2.6vh, 34px);
	animation: rise 1s cubic-bezier(0.2, 0.72, 0.08, 1) both;
}

.brand {
	margin: 0;
	font-size: clamp(34px, 6vw, 64px);
	font-weight: 800;
	letter-spacing: 0.03em;
	line-height: 1;
}

.kana {
	margin: 0;
	color: var(--text-sub);
	letter-spacing: 0.22em;
	font-size: clamp(12px, 1.25vw, 16px);
	transform: translateX(0.12em);
}

.headline {
	margin: calc(50px - clamp(14px, 2.6vh, 34px)) 0 0;
	font-family: "Noto Serif JP", serif;
	font-size: clamp(66px, 14vw, 160px);
	font-weight: 400;
	letter-spacing: 0.12em;
	line-height: 1.08;
	text-shadow: 0 0 36px rgba(110, 67, 176, 0.2);
	white-space: nowrap;
}

.headline::before,
.headline::after {
	color: rgba(240, 245, 255, 0.95);
	font-size: 0.84em;
	vertical-align: 0.03em;
}

.headline::before {
	content: "「";
	margin-right: 0.18em;
}

.headline::after {
	content: "」";
	margin-left: 0.18em;
}

.sub {
	margin: 100px 0 0;
	font-size: clamp(14px, 1.9vw, 34px);
	letter-spacing: 0.22em;
	font-weight: 400;
	color: var(--text-sub);
	text-transform: uppercase;
}

@keyframes rise {
	from {
		opacity: 0;
		transform: translateY(18px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@keyframes haze {
	from {
		transform: translateY(0);
		opacity: 0.58;
	}
	to {
		transform: translateY(-2.5%);
		opacity: 0.82;
	}
}

@media (max-width: 840px) {
	.hero {
		height: min(100svh, 100%);
		width: 100%;
		border-left: 0;
		border-right: 0;
	}

	.sub {
		letter-spacing: 0.14em;
	}
}