:root{
	--ios-blue:#007aff;
	--ios-green:#34c759;
	--ios-red:#ff3b30;
	--ios-orange:#ff9500;
	--ios-yellow:#ffcc00;
	--ios-indigo:#5856d6;
	--ios-purple:#af52de;
	--text:#0b0c0f;
	--text-dim:#5b5f6a;
	--bg:#f5f7fb;
	--bg-card:#ffffff;
	--border:#e6e8ef;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
	font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol", sans-serif;
	color:var(--text);
	background:var(--bg);
	line-height:1.6;
	-webkit-font-smoothing:antialiased;
	-moz-osx-font-smoothing:grayscale;
}

.container{
	max-width:1120px;
	margin:0 auto;
	padding:0 20px;
}

/* Header */
.site-header{
	position:sticky;
	top:0;
	background:rgba(255,255,255,0.8);
	backdrop-filter:saturate(180%) blur(14px);
	border-bottom:1px solid var(--border);
	z-index:20;
}
.header-inner{
	display:flex;
	align-items:center;
	justify-content:space-between;
	min-height:64px;
}
.logo{
	font-weight:800;
	font-size:22px;
	color:var(--ios-blue);
	text-decoration:none;
	letter-spacing:0.2px;
}
.nav{
	display:flex;
	gap:20px;
}
.nav-link{
	color:var(--text);
	text-decoration:none;
	font-weight:600;
	opacity:0.85;
}
.nav-link:hover{color:var(--ios-blue)}

/* Hero */
.hero{
	background:linear-gradient(180deg, rgba(0,122,255,0.08), transparent 60%);
	padding:56px 0 28px;
}
.hero-inner{
	text-align:center;
	padding:32px 0;
}
.hero-title{
	font-size:56px;
	line-height:1.05;
	margin:8px 0 12px;
	letter-spacing:-0.8px;
}
.hero-subtitle{
	color:var(--text-dim);
	font-size:18px;
	margin:0 0 24px;
}
.btn{
	display:inline-block;
	text-decoration:none;
	border-radius:12px;
	padding:12px 18px;
	font-weight:700;
}
.btn-primary{
	background:var(--ios-blue);
	color:#fff;
	box-shadow:0 8px 24px rgba(0,122,255,0.24);
}
.btn-primary:hover{background:#0268d6}

/* Sections */
.section{
	padding:44px 0;
}
.section-alt{
	background:#fff;
}
.section h2{
	font-size:28px;
	margin:0 0 12px;
}
.lead{
	color:var(--text-dim);
	margin:0 0 20px;
}

/* Iframe */
.iframe-wrap{
	position:relative;
	border-radius:16px;
	overflow:hidden;
	background:var(--bg-card);
	border:1px solid var(--border);
	box-shadow:0 10px 28px rgba(0,0,0,0.06);
	aspect-ratio:16/9;
}
.iframe-wrap iframe{
	position:absolute;
	inset:0;
	width:100%;
	height:100%;
	border:0;
}

/* Features grid */
.grid-2{
	display:grid;
	grid-template-columns:repeat(2,1fr);
	gap:16px;
}
.card{
	background:var(--bg-card);
	border:1px solid var(--border);
	border-radius:14px;
	padding:16px;
	box-shadow:0 6px 18px rgba(0,0,0,0.05);
}
.card h3{
	margin:0 0 6px;
	font-size:18px;
}
.card p{
	margin:0;
	color:var(--text-dim);
}

/* Footer */
.site-footer{
	border-top:1px solid var(--border);
	background:#fff;
}
.footer-inner{
	display:flex;
	justify-content:space-between;
	align-items:center;
	min-height:72px;
}
.footer-nav{
	display:flex;
	gap:14px;
}
.footer-nav a{
	color:var(--text-dim);
	text-decoration:none;
}
.footer-nav a:hover{color:var(--ios-blue)}

/* Responsive */
@media (max-width: 900px){
	.grid-2{grid-template-columns:1fr}
	.hero-title{font-size:42px}
	.iframe-wrap{aspect-ratio:16/9}
}
@media (max-width: 560px){
	.header-inner{gap:12px}
	.nav{gap:12px}
	.hero-title{font-size:30px}
	.hero-subtitle{font-size:16px}
	.hero .iframe-wrap{aspect-ratio:16/10}
}