:root {
	--app-bg: #010818;
	--app-surface: rgba(10, 22, 40, 0.92);
	--app-border: rgba(94, 140, 210, 0.25);
	--app-text: #e4ecf7;
	--app-muted: #8fa3c4;
	--app-accent: #5eb3ff;
	--app-accent-hover: #8ccaff;
	--app-android: #3ddc84;
	--app-android-dark: #2ba86a;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
	height: 100%;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
	color: var(--app-text);
	background: var(--app-bg);
	-webkit-font-smoothing: antialiased;
}

.app-page {
	min-height: 100%;
	position: relative;
	display: flex;
	flex-direction: column;
}

.app-bg {
	position: fixed;
	inset: 0;
	z-index: 0;
	background:
		radial-gradient(ellipse 80% 50% at 50% -10%, rgba(30, 64, 120, 0.5) 0%, transparent 55%),
		radial-gradient(ellipse 60% 40% at 100% 100%, rgba(12, 35, 80, 0.4) 0%, transparent 50%),
		linear-gradient(180deg, #010818 0%, #00040c 100%);
}

.app-header {
	position: relative;
	z-index: 1;
	padding: 16px 20px;
}

.app-back {
	color: var(--app-muted);
	text-decoration: none;
	font-size: 14px;
	transition: color 0.2s;
}

.app-back:hover { color: var(--app-accent); }

.app-main {
	position: relative;
	z-index: 1;
	flex: 1;
	width: 100%;
	max-width: 480px;
	margin: 0 auto;
	padding: 0 20px 40px;
}

.app-card {
	background: var(--app-surface);
	border: 1px solid var(--app-border);
	border-radius: 20px;
	padding: 32px 28px 28px;
	text-align: center;
	backdrop-filter: blur(12px);
	box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.app-name {
	font-size: 26px;
	font-weight: 700;
	letter-spacing: 0.02em;
	margin-bottom: 4px;
}

.app-name-en {
	font-size: 13px;
	color: var(--app-muted);
	margin-bottom: 14px;
}

.app-desc {
	font-size: 14px;
	line-height: 1.7;
	color: var(--app-muted);
	margin-bottom: 20px;
}

.app-meta {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 8px;
	margin-bottom: 28px;
}

.app-tag {
	display: inline-flex;
	align-items: center;
	gap: 4px;
	padding: 4px 12px;
	border-radius: 20px;
	font-size: 12px;
	color: var(--app-muted);
	background: rgba(255, 255, 255, 0.05);
	border: 1px solid var(--app-border);
}

.app-tag-android {
	color: var(--app-android);
	border-color: rgba(61, 220, 132, 0.35);
	background: rgba(61, 220, 132, 0.08);
}

.app-download-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
	width: 100%;
	padding: 16px 24px;
	border-radius: 14px;
	background: linear-gradient(135deg, var(--app-android), var(--app-android-dark));
	color: #fff;
	font-size: 17px;
	font-weight: 600;
	text-decoration: none;
	border: none;
	cursor: pointer;
	transition: transform 0.15s, box-shadow 0.15s;
	box-shadow: 0 8px 24px rgba(61, 220, 132, 0.3);
}

.app-download-btn:hover,
.app-download-btn:active {
	transform: translateY(-1px);
	box-shadow: 0 12px 32px rgba(61, 220, 132, 0.4);
	color: #fff;
}

.app-unavailable {
	padding: 16px;
	border-radius: 14px;
	background: rgba(251, 191, 36, 0.1);
	border: 1px solid rgba(251, 191, 36, 0.3);
	color: #fbbf24;
	font-size: 15px;
}

.app-stats {
	display: flex;
	align-items: center;
	justify-content: center;
	margin-top: 28px;
	padding-top: 24px;
	border-top: 1px solid var(--app-border);
}

.app-stat-item { flex: 1; text-align: center; }

.app-stat-num {
	font-size: 22px;
	font-weight: 700;
	color: var(--app-accent);
}

.app-stat-label {
	font-size: 12px;
	color: var(--app-muted);
	margin-top: 4px;
}

.app-stat-divider {
	width: 1px;
	height: 36px;
	background: var(--app-border);
}

.app-section {
	margin-top: 24px;
	padding: 24px;
	background: var(--app-surface);
	border: 1px solid var(--app-border);
	border-radius: 16px;
	backdrop-filter: blur(8px);
}

.app-section-title {
	font-size: 15px;
	font-weight: 600;
	margin-bottom: 14px;
	color: var(--app-text);
}

.app-changelog {
	list-style: none;
}

.app-changelog li {
	display: flex;
	gap: 12px;
	padding: 10px 0;
	border-bottom: 1px solid rgba(255, 255, 255, 0.05);
	font-size: 14px;
}

.app-changelog li:last-child { border-bottom: none; }

.app-changelog-ver {
	flex-shrink: 0;
	color: var(--app-accent);
	font-weight: 600;
	min-width: 48px;
}

.app-changelog-text { color: var(--app-muted); }

.app-steps {
	padding-left: 20px;
	font-size: 14px;
	line-height: 2;
	color: var(--app-muted);
}

.app-note {
	margin-top: 12px;
	font-size: 12px;
	color: var(--app-muted);
	opacity: 0.8;
}

.app-footer {
	position: relative;
	z-index: 1;
	text-align: center;
	padding: 20px;
	font-size: 12px;
	color: var(--app-muted);
	opacity: 0.7;
}

@media (max-width: 380px) {
	.app-card { padding: 28px 20px 22px; }
	.app-name { font-size: 22px; }
	.app-download-btn { font-size: 15px; padding: 14px 20px; }
}