:root {
	--ink: #111111;
	--secondary: #5c5c5c;
	--muted: #8a8a8a;
	--paper: #f4f4f5;
	--white: #ffffff;
	--line: rgba(17, 17, 17, 0.08);
	--blue: #4c7dff;
	--blue-deep: #3a68f0;
	--shadow: 0 24px 60px rgba(17, 17, 17, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
	margin: 0;
	font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
	color: var(--ink);
	background: var(--paper);
	line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, .btn { font-family: inherit; }

.wrap {
	width: min(1120px, calc(100% - 48px));
	margin: 0 auto;
}

.top {
	position: sticky;
	top: 0;
	z-index: 20;
	height: 64px;
	display: flex;
	align-items: center;
	background: rgba(244, 244, 245, 0.86);
	backdrop-filter: blur(16px);
}
.top-inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	width: min(1120px, calc(100% - 48px));
	margin: 0 auto;
}
.brand {
	display: flex;
	align-items: center;
	gap: 10px;
	font-weight: 650;
	font-size: 15px;
}
.brand img {
	width: 40px;
	height: 40px;
	border-radius: 0;
	object-fit: contain;
	background: transparent;
}
.nav {
	display: flex;
	align-items: center;
	gap: 22px;
	color: var(--secondary);
	font-size: 14px;
}
.nav a:hover { color: var(--ink); }

.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	height: 44px;
	padding: 0 18px;
	border-radius: 999px;
	font-weight: 600;
	font-size: 14px;
	border: 1px solid transparent;
}
.btn-dark { background: #111; color: #fff; }
.btn-dark:hover { background: #2a2a2a; }
.btn-light {
	background: #fff;
	color: #111;
	border-color: var(--line);
}
.btn-light:hover { background: #fafafa; }
.btn-blue { background: var(--blue); color: #fff; }
.btn-blue:hover { background: var(--blue-deep); }
.btn-sm { height: 36px; padding: 0 14px; }

.hero {
	padding: 72px 0 28px;
	text-align: center;
}
.kicker {
	margin: 0 0 16px;
	color: var(--muted);
	font-size: 13px;
	letter-spacing: 0.14em;
}
h1 {
	margin: 0 auto 16px;
	max-width: 760px;
	font-size: 68px;
	line-height: 1.02;
	font-weight: 600;
	letter-spacing: -0.045em;
}
.lead {
	margin: 0 auto 28px;
	max-width: 460px;
	color: var(--secondary);
	font-size: 17px;
}
.actions {
	display: flex;
	justify-content: center;
	gap: 10px;
	flex-wrap: wrap;
}
.hint {
	margin: 14px 0 0;
	color: var(--muted);
	font-size: 13px;
}

.shelf {
	display: flex;
	justify-content: center;
	gap: 18px;
	padding: 36px 0 12px;
	overflow-x: auto;
}
.phone {
	flex: 0 0 220px;
	height: 452px;
	border-radius: 32px;
	background: #111;
	padding: 8px;
	box-shadow: var(--shadow);
}
.screen {
	height: 100%;
	border-radius: 26px;
	background: #f7f8fa;
	overflow: hidden;
	color: #1c2333;
	text-align: left;
}
.screen-top {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 16px 14px 8px;
	font-size: 13px;
	font-weight: 650;
}
.map {
	height: 168px;
	margin: 0 10px;
	border-radius: 16px;
	background:
		linear-gradient(160deg, rgba(76, 125, 255, 0.18), transparent 42%),
		linear-gradient(#e7eef8, #d5e4d8 55%, #c9d7ea);
	position: relative;
}
.map i {
	position: absolute;
	left: 18px;
	right: 28px;
	top: 70px;
	height: 3px;
	border-radius: 99px;
	background: #4c7dff;
	transform: rotate(-8deg);
}
.sheet {
	margin-top: 12px;
	padding: 12px 12px 0;
}
.sheet b { display: block; font-size: 13px; margin-bottom: 8px; }
.row {
	display: flex;
	gap: 8px;
	background: #fff;
	border-radius: 12px;
	padding: 8px;
	margin-bottom: 8px;
}
.thumb {
	width: 42px;
	height: 42px;
	border-radius: 8px;
	background: #e8eefc;
	flex: none;
}
.row span { display: block; font-size: 11px; color: #6b7280; }
.row strong { font-size: 12px; font-weight: 650; }

.go-screen {
	display: flex;
	flex-direction: column;
	height: 100%;
	background: #fff;
}
.go-map {
	flex: 1;
	margin: 0 12px 12px;
	border-radius: 18px;
	background:
		linear-gradient(#edf2f8, #d7e3d4);
}
.go-btn {
	width: 92px;
	height: 92px;
	margin: 8px auto 22px;
	border-radius: 50%;
	background: #4c7dff;
	color: #fff;
	display: grid;
	place-items: center;
	font-size: 22px;
	font-weight: 700;
	letter-spacing: 0.04em;
}
.tabs {
	display: flex;
	gap: 6px;
	padding: 0 12px 10px;
}
.tabs em {
	font-style: normal;
	font-size: 11px;
	padding: 4px 8px;
	border-radius: 99px;
	background: #f3f4f6;
	color: #6b7280;
}
.tabs em.on { background: #eaf1ff; color: #4c7dff; }

.feed {
	margin: 8px 12px;
	background: #fff;
	border-radius: 14px;
	overflow: hidden;
}
.feed-pic {
	height: 110px;
	background: linear-gradient(135deg, #dbe7ff, #c9ddd0);
}
.feed p { margin: 0; padding: 10px 10px 12px; font-size: 12px; }

.rank { padding: 4px 12px; }
.rank-row {
	display: flex;
	align-items: center;
	gap: 8px;
	background: #fff;
	border-radius: 12px;
	padding: 10px;
	margin-bottom: 8px;
	font-size: 12px;
}
.rank-row i {
	width: 18px;
	font-style: normal;
	font-weight: 700;
	color: #4c7dff;
}
.rank-row b { margin-left: auto; }

.block {
	padding: 72px 0 8px;
}
.block h2 {
	margin: 0 0 8px;
	font-size: 40px;
	font-weight: 600;
	letter-spacing: -0.04em;
}
.block .sub {
	margin: 0 0 28px;
	max-width: 420px;
	color: var(--secondary);
}
.features {
	display: grid;
	grid-template-columns: 1.2fr 1fr 1fr 1fr;
	gap: 12px;
}
.feature {
	background: #fff;
	border-radius: 20px;
	padding: 22px 20px 20px;
	min-height: 180px;
}
.feature.wide { background: #111; color: #fff; }
.feature.wide span { color: rgba(255,255,255,0.72); }
.feature strong { display: block; margin-bottom: 8px; font-size: 18px; font-weight: 600; }
.feature span { color: var(--secondary); font-size: 14px; }

.get {
	display: grid;
	grid-template-columns: 0.9fr 1.1fr;
	gap: 12px;
	padding-bottom: 20px;
}
.panel {
	background: #fff;
	border-radius: 24px;
	padding: 28px;
	min-height: 280px;
}
.panel h3 { margin: 0 0 8px; font-size: 28px; letter-spacing: -0.03em; font-weight: 600; }
.panel p { margin: 0 0 18px; color: var(--secondary); }
.qr {
	width: 168px;
	height: 168px;
	background: #fff;
	border-radius: 12px;
	object-fit: contain;
}
.panel-dark {
	background: #111;
	color: #fff;
}
.panel-dark p { color: rgba(255,255,255,0.7); }

.about-grid,
.contact-grid,
.legal-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 12px;
}
.about-card,
.contact-card,
.legal-card {
	background: #fff;
	border-radius: 20px;
	padding: 22px 20px;
	min-height: 160px;
}
.about-card strong,
.contact-card strong,
.legal-card strong {
	display: block;
	margin-bottom: 8px;
	font-size: 18px;
	font-weight: 600;
}
.about-card span,
.contact-card span,
.legal-card span {
	color: var(--secondary);
	font-size: 14px;
	line-height: 1.6;
}
.contact-card a {
	display: inline-block;
	margin-top: 6px;
	color: var(--blue);
	font-weight: 600;
	font-size: 15px;
}
.contact-card em {
	display: block;
	margin-top: 14px;
	font-style: normal;
	color: var(--muted);
	font-size: 13px;
}
.contact-card .wx-label {
	margin-top: 14px;
	margin-bottom: 0;
	color: var(--secondary);
	font-size: 12px;
	letter-spacing: 0.04em;
}
.legal-card:hover { background: #fafafa; }

.faq {
	display: grid;
	gap: 10px;
}
.faq details {
	background: #fff;
	border-radius: 16px;
	padding: 16px 18px;
}
.faq summary {
	cursor: pointer;
	font-weight: 600;
	font-size: 16px;
	list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
	content: "+";
	float: right;
	color: var(--muted);
	font-weight: 500;
}
.faq details[open] summary::after { content: "–"; }
.faq p {
	margin: 10px 0 0;
	color: var(--secondary);
	font-size: 14px;
	line-height: 1.65;
}

.foot {
	padding: 36px 0 42px;
	color: var(--muted);
	font-size: 13px;
}
.foot-row {
	display: flex;
	justify-content: space-between;
	gap: 16px;
	flex-wrap: wrap;
}
.foot-links {
	display: flex;
	flex-wrap: wrap;
	gap: 14px;
}
.foot a:hover { color: var(--ink); }

@media (max-width: 860px) {
	.wrap, .top-inner { width: min(1120px, calc(100% - 24px)); }
	.top { height: 56px; }
	.brand img { width: 34px; height: 34px; }
	.nav { gap: 10px; }
	.nav .hide-sm { display: none; }
	.nav #download-nav { display: inline-flex; }

	.hero { padding: 36px 0 18px; }
	h1 { font-size: 34px; letter-spacing: -0.035em; }
	.lead { font-size: 15px; max-width: none; }
	.actions { display: grid; gap: 10px; }
	.actions .btn { width: 100%; height: 48px; }

	.shelf {
		justify-content: flex-start;
		gap: 12px;
		padding: 18px 16px 8px;
		scroll-snap-type: x mandatory;
		-webkit-overflow-scrolling: touch;
	}
	.phone {
		flex: 0 0 180px;
		height: 372px;
		scroll-snap-align: start;
	}
	.phone:first-child { margin-left: 0; }

	.block { padding: 48px 0 4px; }
	.block h2 { font-size: 28px; }
	.block .sub { margin-bottom: 18px; }
	.features, .get,
	.about-grid, .contact-grid, .legal-grid { grid-template-columns: 1fr; }
	.feature, .about-card, .contact-card, .legal-card, .panel {
		min-height: 0;
	}
	.panel { padding: 22px 18px; }
	.qr { width: 180px; height: 180px; margin: 0 auto; }
	.panel .qr { display: block; }
	.get .panel { text-align: left; }
	.faq summary { font-size: 15px; padding-right: 18px; }
	.contact-card a { word-break: break-all; }
	.foot { padding: 28px 0 40px; padding-bottom: calc(40px + env(safe-area-inset-bottom)); }
	.foot-row { flex-direction: column; gap: 12px; }
	.foot-links { gap: 12px 16px; }
}