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

html,
body {
	min-height: 100%;
	min-height: 100dvh;
	font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
	background: #e8f2ff;
	color: #0f172a;
	-webkit-tap-highlight-color: transparent;
}

.sd-page {
	max-width: 430px;
	margin: 0 auto;
	min-height: 100dvh;
	position: relative;
	padding-bottom: calc(24px + env(safe-area-inset-bottom, 0));
	overflow-x: hidden;
}

.sd-hero {
	position: relative;
	padding: calc(12px + env(safe-area-inset-top, 0)) 16px 120px;
	background: linear-gradient(165deg, #2f80ff 0%, #1a66f0 42%, #1557d8 100%);
	color: #fff;
	overflow: hidden;
}

.sd-hero::before,
.sd-hero::after {
	content: "";
	position: absolute;
	border-radius: 50%;
	background: rgba(255, 255, 255, 0.08);
}

.sd-hero::before {
	width: 220px;
	height: 220px;
	right: -60px;
	top: -40px;
}

.sd-hero::after {
	width: 140px;
	height: 140px;
	left: -30px;
	bottom: 20px;
}

.sd-nav {
	position: relative;
	z-index: 2;
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 44px;
	margin-bottom: 18px;
}

.sd-back {
	position: absolute;
	left: 0;
	top: 50%;
	transform: translateY(-50%);
	width: 36px;
	height: 36px;
	display: flex;
	align-items: center;
	justify-content: center;
	color: #fff;
	text-decoration: none;
}

.sd-nav h1 {
	font-size: 17px;
	font-weight: 700;
	letter-spacing: 0.02em;
}

.sd-hero-body {
	position: relative;
	z-index: 2;
}

.sd-hero-copy {
	flex: 1;
	min-width: 0;
	padding-top: 4px;
}

.sd-brand {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	font-size: 13px;
	font-weight: 700;
	opacity: 0.95;
	margin-bottom: 10px;
}

.sd-brand-dot {
	width: 8px;
	height: 8px;
	border-radius: 50%;
	background: #7dd3fc;
	box-shadow: 0 0 0 4px rgba(125, 211, 252, 0.25);
}

.sd-hero-copy h2 {
	font-size: 24px;
	font-weight: 800;
	line-height: 1.25;
	margin-bottom: 8px;
}

.sd-hero-copy p {
	font-size: 13px;
	line-height: 1.55;
	opacity: 0.92;
	max-width: 220px;
}

.sd-main-wrap {
	position: relative;
	z-index: 3;
	margin: -92px 16px 0;
	overflow: visible;
}

.sd-main-mascot {
	position: absolute;
	right: -4px;
	bottom: 100%;
	top: auto;
	width: 220px;
	height: auto;
	margin-bottom: -34px;
	z-index: 6;
	pointer-events: none;
	user-select: none;
	-webkit-user-drag: none;
	filter: drop-shadow(0 10px 24px rgba(15, 23, 42, 0.22));
}

.sd-main {
	position: relative;
	z-index: 3;
	margin: 0;
	padding: 24px 18px 20px;
	background: #fff;
	border-radius: 20px;
	box-shadow: 0 10px 32px rgba(37, 99, 235, 0.12);
	text-align: center;
	overflow: visible;
}

.sd-main h3 {
	font-size: 18px;
	font-weight: 800;
	color: #0f172a;
	margin-bottom: 8px;
	padding-right: 112px;
	text-align: left;
	line-height: 1.35;
}

.sd-main .sub {
	font-size: 13px;
	color: #2563eb;
	font-weight: 600;
	margin-bottom: 18px;
}

.sd-qr-wrap {
	width: min(100%, 260px);
	margin: 0 auto 12px;
	padding: 14px;
	border-radius: 16px;
	background: linear-gradient(180deg, #f8fbff 0%, #eef4ff 100%);
	border: 1px solid #dbeafe;
}

.sd-qr {
	width: 100%;
	aspect-ratio: 1;
	border-radius: 12px;
	background: #fff;
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
}

.sd-qr img {
	width: 100%;
	height: 100%;
	object-fit: contain;
	display: block;
}

.sd-qr-loading {
	font-size: 13px;
	color: #94a3b8;
}

.sd-tip {
	font-size: 12px;
	color: #64748b;
	line-height: 1.6;
}

.sd-features {
	margin: 22px 16px 0;
	padding: 18px 12px 16px;
	background: rgba(255, 255, 255, 0.72);
	border-radius: 18px;
	border: 1px solid rgba(255, 255, 255, 0.8);
}

.sd-features-title {
	text-align: center;
	font-size: 13px;
	color: #475569;
	margin-bottom: 16px;
	font-weight: 600;
}

.sd-features-row {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: 8px;
}

.sd-feat {
	flex: 1;
	text-align: center;
	min-width: 0;
}

.sd-feat-ico {
	width: 52px;
	height: 52px;
	margin: 0 auto 8px;
	border-radius: 16px;
	background: linear-gradient(145deg, #eff6ff, #dbeafe);
	color: #2563eb;
	display: flex;
	align-items: center;
	justify-content: center;
}

.sd-feat-ico svg {
	width: 26px;
	height: 26px;
	stroke: currentColor;
	fill: none;
	stroke-width: 1.8;
	stroke-linecap: round;
	stroke-linejoin: round;
}

.sd-feat span {
	display: block;
	font-size: 12px;
	color: #334155;
	line-height: 1.45;
	font-weight: 600;
}

.sd-feat-arrow {
	flex-shrink: 0;
	align-self: center;
	color: #93c5fd;
	font-size: 18px;
	line-height: 1;
	padding-top: 10px;
}