:root {
	--bg: #05070b;
	--bg-soft: #0c1118;
	--panel: rgba(13, 20, 31, 0.78);
	--panel-strong: rgba(18, 29, 43, 0.94);
	--text: #f5f7fb;
	--muted: #b7c2d4;
	--soft: #7e8da3;
	--cyan: #3fd6ff;
	--mint: #67f2bf;
	--gold: #f2c767;
	--rose: #ff7a90;
	--line: rgba(255, 255, 255, 0.14);
	--shadow: 0 24px 70px rgba(0, 0, 0, 0.42);
}

* {
	box-sizing: border-box;
}

html {
	scroll-behavior: smooth;
}

body {
	margin: 0;
	font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
	background: var(--bg);
	color: var(--text);
	line-height: 1.7;
}

body::before {
	content: "";
	position: fixed;
	inset: 0;
	pointer-events: none;
	background:
		linear-gradient(120deg, rgba(63, 214, 255, 0.08), transparent 36%),
		linear-gradient(300deg, rgba(242, 199, 103, 0.08), transparent 44%),
		#05070b;
	z-index: -2;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible {
	outline: 3px solid var(--gold);
	outline-offset: 4px;
}

img {
	max-width: 100%;
	height: auto;
}

.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

.skip-link {
	position: fixed;
	left: 16px;
	top: 12px;
	z-index: 1000;
	transform: translateY(-140%);
	background: #fff;
	color: #05121f;
	padding: 10px 14px;
	border-radius: 6px;
	font-weight: 700;
}

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

.site-header {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 20;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
	padding: 18px clamp(18px, 5vw, 64px);
	background: rgba(5, 7, 11, 0.72);
	border-bottom: 1px solid var(--line);
	backdrop-filter: blur(16px);
}

.brand {
	display: inline-flex;
	align-items: center;
	gap: 12px;
	font-size: 18px;
	font-weight: 800;
	letter-spacing: 0;
	white-space: nowrap;
}

.brand img {
	border-radius: 10px;
	box-shadow: 0 0 22px rgba(63, 214, 255, 0.25);
}

.nav-links {
	display: flex;
	align-items: center;
	justify-content: flex-end;
	gap: clamp(12px, 2.5vw, 30px);
	font-size: 15px;
	color: var(--muted);
}

.nav-links a {
	display: inline-flex;
	align-items: center;
	min-height: 44px;
	padding: 8px 0;
	border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a:focus-visible {
	color: var(--text);
	border-bottom-color: var(--cyan);
}

.hero {
	position: relative;
	min-height: 100svh;
	display: flex;
	align-items: center;
	overflow: hidden;
	padding: 120px clamp(20px, 6vw, 88px) 72px;
}

.hero-media,
.hero-overlay {
	position: absolute;
	inset: 0;
}

.hero-media {
	background-image: url("../images/chuanjiang12.jpg");
	background-size: cover;
	background-position: center;
	transform: scale(1.01);
	z-index: -3;
}

.hero-overlay {
	z-index: -1;
	background:
		linear-gradient(90deg, rgba(5, 7, 11, 0.96) 0%, rgba(5, 7, 11, 0.78) 40%, rgba(5, 7, 11, 0.34) 74%),
		linear-gradient(180deg, rgba(5, 7, 11, 0.15) 0%, #05070b 98%);
}

.hero-content {
	width: min(780px, 100%);
}

.eyebrow,
.section-kicker,
.countdown-label {
	margin: 0 0 14px;
	color: var(--mint);
	font-size: 14px;
	font-weight: 800;
	letter-spacing: 0;
}

h1,
h2,
h3,
p {
	margin-top: 0;
}

h1 {
	margin-bottom: 10px;
	font-size: clamp(56px, 12vw, 128px);
	line-height: 0.95;
	font-weight: 900;
	letter-spacing: 0;
	text-shadow: 0 0 40px rgba(63, 214, 255, 0.24);
}

.hero-subtitle {
	margin-bottom: 18px;
	font-size: clamp(28px, 5vw, 58px);
	line-height: 1.12;
	font-weight: 800;
}

.hero-copy,
.lead {
	max-width: 760px;
	color: var(--muted);
	font-size: clamp(17px, 2vw, 22px);
}

.hero-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 14px;
	margin: 34px 0 32px;
}

.button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 44px;
	min-height: 48px;
	padding: 12px 22px;
	border: 1px solid transparent;
	border-radius: 6px;
	font-weight: 800;
	line-height: 1.2;
	cursor: pointer;
}

.button-primary {
	background: linear-gradient(135deg, var(--cyan), var(--mint));
	color: #03131a;
	box-shadow: 0 14px 36px rgba(63, 214, 255, 0.24);
}

.button-secondary {
	background: rgba(255, 255, 255, 0.08);
	color: var(--text);
	border-color: var(--line);
}

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

.countdown {
	width: min(640px, 100%);
	padding: 20px;
	background: rgba(5, 7, 11, 0.58);
	border: 1px solid var(--line);
	border-radius: 8px;
	box-shadow: var(--shadow);
	backdrop-filter: blur(18px);
}

.countdown-grid {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: 10px;
}

.countdown-grid div {
	min-width: 0;
	padding: 14px 8px;
	text-align: center;
	background: rgba(255, 255, 255, 0.07);
	border: 1px solid rgba(255, 255, 255, 0.1);
	border-radius: 6px;
}

.countdown-grid strong {
	display: block;
	font-size: clamp(28px, 5vw, 42px);
	line-height: 1;
	font-variant-numeric: tabular-nums;
}

.countdown-grid span,
.countdown-note {
	color: var(--muted);
}

.countdown-note {
	margin: 14px 0 0;
	font-size: 14px;
}

.section {
	padding: clamp(72px, 10vw, 128px) clamp(20px, 6vw, 88px);
	border-top: 1px solid var(--line);
}

.section-inner {
	width: min(1180px, 100%);
	margin: 0 auto;
}

.split,
.reserve-layout,
.mystery-box-layout {
	display: grid;
	grid-template-columns: minmax(0, 1fr) minmax(320px, 0.84fr);
	gap: clamp(34px, 6vw, 82px);
	align-items: center;
}

h2 {
	max-width: 820px;
	margin-bottom: 22px;
	font-size: clamp(34px, 5vw, 64px);
	line-height: 1.1;
	font-weight: 900;
	letter-spacing: 0;
}

h3 {
	margin-bottom: 10px;
	color: var(--text);
	font-size: 22px;
	font-weight: 800;
}

.feature-list,
.reveal-list {
	list-style: none;
	padding: 0;
	margin: 0;
}

.feature-list {
	display: grid;
	gap: 14px;
}

.feature-list li,
.value-grid article,
.reservation-form,
.download-item {
	background: var(--panel);
	border: 1px solid var(--line);
	border-radius: 8px;
	box-shadow: var(--shadow);
}

.feature-list li {
	padding: 20px;
}

.feature-list span {
	display: block;
	margin-bottom: 6px;
	color: var(--gold);
	font-size: 20px;
	font-weight: 900;
}

.feature-list p,
.value-grid p,
.download-item p {
	margin-bottom: 0;
	color: var(--muted);
}

.accessibility {
	background:
		linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)),
		#070b10;
}

.value-grid {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: 16px;
	margin-top: 36px;
}

.value-grid article {
	padding: 24px;
}

.mystery-box-section {
	position: relative;
	overflow: hidden;
	background:
		linear-gradient(90deg, #05070b 0%, #0b0f15 55%, #11120c 100%);
}

.mystery-box-copy {
	position: relative;
	z-index: 2;
}

.reveal-list {
	display: grid;
	gap: 12px;
	margin: 26px 0;
}

.reveal-list li {
	position: relative;
	padding-left: 28px;
	color: var(--text);
	font-size: clamp(18px, 2vw, 22px);
	font-weight: 800;
}

.reveal-list li::before {
	content: "";
	position: absolute;
	left: 0;
	top: 0.72em;
	width: 10px;
	height: 10px;
	border-radius: 50%;
	background: var(--gold);
	box-shadow: 0 0 20px rgba(242, 199, 103, 0.45);
}

.secret-line {
	margin-bottom: 0;
	color: var(--gold);
	font-size: 20px;
	font-weight: 900;
}

.mystery-box-stage {
	position: relative;
	min-height: 360px;
	display: flex;
	align-items: center;
	justify-content: center;
}

.mystery-box-light {
	position: absolute;
	width: 86%;
	height: 56%;
	background:
		radial-gradient(ellipse at center, rgba(242, 199, 103, 0.28), transparent 58%),
		linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
	filter: blur(12px);
	transform: perspective(600px) rotateX(60deg);
}

.mystery-box-visual {
	position: relative;
	width: min(310px, 72vw);
	height: 260px;
	filter: drop-shadow(0 26px 44px rgba(0, 0, 0, 0.7));
}

.mystery-box-lid,
.mystery-box-body,
.mystery-box-spark {
	position: absolute;
	display: block;
}

.mystery-box-lid {
	left: 22px;
	right: 22px;
	top: 42px;
	height: 58px;
	background: linear-gradient(160deg, rgba(255, 255, 255, 0.2), rgba(10, 12, 15, 0.98) 62%);
	border: 1px solid rgba(255, 255, 255, 0.18);
	border-radius: 12px;
	transform: perspective(520px) rotateX(58deg);
	transform-origin: bottom;
}

.mystery-box-body {
	left: 36px;
	right: 36px;
	top: 92px;
	height: 132px;
	background:
		linear-gradient(90deg, transparent 46%, rgba(242, 199, 103, 0.28) 47%, rgba(242, 199, 103, 0.28) 53%, transparent 54%),
		linear-gradient(180deg, rgba(255, 255, 255, 0.14), #050505);
	border-radius: 10px 10px 18px 18px;
	border: 1px solid rgba(255, 255, 255, 0.18);
}

.mystery-box-spark {
	right: 70px;
	top: 28px;
	width: 18px;
	height: 18px;
	border-radius: 50%;
	background: var(--gold);
	box-shadow: 0 0 30px rgba(242, 199, 103, 0.84);
}

.reserve-section {
	background:
		linear-gradient(135deg, rgba(63, 214, 255, 0.09), transparent 42%),
		#071017;
}

.reservation-form {
	padding: 28px;
}

.field,
fieldset {
	margin: 0 0 20px;
	padding: 0;
	border: 0;
}

label,
legend {
	display: block;
	margin-bottom: 8px;
	color: var(--text);
	font-weight: 800;
}

input[type="tel"],
input[type="text"],
input[type="email"],
select {
	width: 100%;
	min-height: 52px;
	padding: 12px 14px;
	border: 1px solid rgba(255, 255, 255, 0.22);
	border-radius: 6px;
	background: rgba(255, 255, 255, 0.08);
	color: var(--text);
	font: inherit;
}

select {
	appearance: none;
	background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
	background-position: calc(100% - 18px) 50%, calc(100% - 12px) 50%;
	background-size: 6px 6px, 6px 6px;
	background-repeat: no-repeat;
	padding-right: 34px;
}

.field-row {
	display: grid;
	grid-template-columns: minmax(0, 1fr) auto;
	gap: 12px;
	align-items: stretch;
}

.phone-row {
	grid-template-columns: minmax(128px, 0.42fr) minmax(0, 1fr);
}

.inline-button {
	min-height: 52px;
	padding: 0 18px;
	border: 1px solid rgba(255, 255, 255, 0.28);
	border-radius: 6px;
	background: rgba(255, 255, 255, 0.1);
	color: var(--text);
	font: inherit;
	font-weight: 800;
	cursor: pointer;
	white-space: nowrap;
}

.inline-button:disabled,
.form-button:disabled {
	opacity: 0.62;
	cursor: not-allowed;
}

input[aria-invalid="true"] {
	border-color: var(--rose);
	box-shadow: 0 0 0 3px rgba(255, 122, 144, 0.22);
}

input[type="tel"]::placeholder,
input[type="text"]::placeholder,
input[type="email"]::placeholder {
	color: #8d9aad;
}

.field p {
	margin: 8px 0 0;
	color: var(--soft);
	font-size: 14px;
}

.checkbox-row {
	display: flex;
	align-items: flex-start;
	gap: 12px;
	min-height: 44px;
	margin: 12px 0;
	color: var(--muted);
	font-weight: 700;
	cursor: pointer;
}

.checkbox-row input {
	width: 22px;
	height: 22px;
	margin-top: 2px;
	accent-color: var(--cyan);
	flex: 0 0 auto;
}

.policy-row {
	font-size: 14px;
}

.form-button {
	width: 100%;
	border: 0;
	font-size: 17px;
}

.form-message {
	min-height: 28px;
	margin: 16px 0 0;
	color: var(--mint);
	font-weight: 800;
}

.form-message.error {
	color: var(--rose);
}

@media (forced-colors: active) {
	.site-header,
	.countdown,
	.feature-list li,
	.value-grid article,
	.reservation-form,
	.download-item,
	.install-card,
	.activation-note {
		border: 1px solid CanvasText;
		box-shadow: none;
	}

	.button-primary,
	.button-secondary {
		border: 1px solid ButtonText;
	}

	a:focus-visible,
	button:focus-visible,
	input:focus-visible,
	select:focus-visible {
		outline: 3px solid Highlight;
	}
}

.download-section {
	background: #06080d;
}

.download-grid,
.install-grid {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 16px;
	margin-top: 28px;
}

.download-item,
.install-card,
.activation-note {
	display: block;
	padding: 24px;
	background: var(--panel);
	border: 1px solid var(--line);
	border-radius: 8px;
	box-shadow: var(--shadow);
}

.download-item:hover,
.download-item:focus-visible {
	border-color: rgba(63, 214, 255, 0.72);
	transform: translateY(-2px);
}

.download-item span,
.install-card span {
	display: block;
	color: var(--mint);
	font-weight: 800;
}

.download-item strong {
	display: block;
	margin: 6px 0 8px;
	font-size: 24px;
}

.install-card h3,
.activation-note h3 {
	margin: 6px 0 14px;
	font-size: 24px;
}

.install-steps {
	margin: 0;
	padding-left: 1.4em;
	color: var(--muted);
}

.install-steps li {
	margin: 0 0 10px;
	padding-left: 4px;
}

.install-steps li:last-child {
	margin-bottom: 0;
}

.activation-note {
	margin-top: 16px;
}

.activation-note p {
	margin-bottom: 0;
	color: var(--muted);
}

.copy-account {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 14px;
	margin-top: 18px;
	padding-top: 18px;
	border-top: 1px solid var(--line);
}

.copy-account p {
	margin: 0;
	color: var(--muted);
}

.copy-account strong {
	color: var(--text);
}

.copy-status {
	min-height: 24px;
	margin: 10px 0 0;
	color: var(--mint);
	font-size: 14px;
}

.copy-status.error {
	color: var(--rose);
}

.site-footer {
	display: flex;
	justify-content: space-between;
	gap: 30px;
	padding: 34px clamp(20px, 6vw, 88px);
	background: #030507;
	border-top: 1px solid var(--line);
	color: var(--muted);
}

.site-footer strong {
	color: var(--text);
}

.site-footer p {
	margin-bottom: 0;
}

.site-footer address {
	font-style: normal;
	text-align: right;
}

.site-footer a {
	color: var(--text);
	text-decoration: underline;
	text-decoration-thickness: 1px;
	text-underline-offset: 4px;
}

@media (max-width: 900px) {
	.site-header {
		position: absolute;
		align-items: flex-start;
		flex-direction: column;
		gap: 12px;
	}

	.nav-links {
		width: 100%;
		justify-content: flex-start;
		overflow-x: auto;
		padding-bottom: 2px;
	}

	.hero {
		padding-top: 160px;
	}

	.hero-overlay {
		background:
			linear-gradient(90deg, rgba(5, 7, 11, 0.96), rgba(5, 7, 11, 0.72)),
			linear-gradient(180deg, rgba(5, 7, 11, 0.16), #05070b 98%);
	}

	.split,
	.reserve-layout,
	.mystery-box-layout {
		grid-template-columns: 1fr;
	}

	.value-grid {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}
}

@media (max-width: 620px) {
	.nav-links {
		gap: 18px;
		font-size: 14px;
	}

	.hero {
		min-height: auto;
		padding-bottom: 56px;
	}

	.hero-actions,
	.download-grid,
	.install-grid,
	.field-row,
	.phone-row {
		grid-template-columns: 1fr;
	}

	.inline-button {
		width: 100%;
	}

	.copy-account {
		align-items: stretch;
		flex-direction: column;
	}

	.hero-actions {
		display: grid;
	}

	.button {
		width: 100%;
	}

	.countdown {
		padding: 14px;
	}

	.countdown-grid {
		gap: 8px;
	}

	.countdown-grid div {
		padding: 12px 4px;
	}

	.value-grid,
	.download-grid,
	.install-grid {
		grid-template-columns: 1fr;
	}

	.mystery-box-stage {
		min-height: 260px;
	}

	.mystery-box-visual {
		transform: scale(0.82);
	}

	.site-footer {
		display: block;
	}

	.site-footer address {
		margin-top: 18px;
		text-align: left;
	}
}

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

	* {
		transition-duration: 0.01ms !important;
		animation-duration: 0.01ms !important;
		animation-iteration-count: 1 !important;
	}
}