:root {
	--purple: #7C3AED; --purple-dark: #5B21B6; --purple-light: #EDE9FE; --purple-bg: #F5F3FA;
	--gray-bg: #F9FAFB; --gray-text: #6B7280; --dark: #111827; --white: #FFFFFF;
	--radius-sm: 12px; --radius: 16px; --radius-lg: 24px; --radius-full: 999px;
	--max-width: 1200px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue",sans-serif;font-size:14px;color:var(--dark);background:#f8f5fc;line-height:1.6;-webkit-font-smoothing:antialiased;min-width:360px}
a{color:var(--purple);text-decoration:none}img{max-width:100%;height:auto}

/* Header */
.site-header{background:var(--white);position:sticky;top:0;z-index:100;height:56px;display:flex;align-items:center;border-bottom:1px solid #E5E7EB;padding:0 16px}
.header-inner{width:100%;max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:700;color:var(--dark)}
.nav-desktop{display:none}
/* Header CTA button — hidden on mobile, shown on desktop */
.header-cta{display:none}
.hamburger{display:flex;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.hamburger span{display:block;width:24px;height:2px;background:var(--dark);border-radius:2px;transition:transform .2s}
.nav-mobile{display:none;position:fixed;top:56px;left:0;right:0;bottom:0;background:var(--white);z-index:99;flex-direction:column;padding:24px 16px;gap:16px}
.nav-mobile.open{display:flex}
.nav-mobile a{font-size:18px;color:var(--dark);padding:12px 0;border-bottom:1px solid #E5E7EB}

/* Shared sections */
.section{padding:48px 16px}
.section-inner{max-width:var(--max-width);margin:0 auto}
.section h2{font-size:22px;font-weight:700;margin-bottom:12px}
.section-desc{color:var(--gray-text);margin-bottom:24px}

/* Shared buttons */
.btn{display:inline-block;padding:12px 24px;border-radius:var(--radius-full);font-size:14px;font-weight:600;text-align:center;cursor:pointer;border:none;transition:opacity .2s}
.btn:active{opacity:.8}
.btn-white{background:var(--white);color:var(--purple)}
.btn-outline{background:transparent;color:var(--white);border:1.5px solid var(--white)}
.btn-primary{background:var(--purple-dark);color:var(--white);width:100%;padding:14px}

/* Shared dot */
.dot{width:8px;height:8px;border-radius:50%;background:var(--purple);flex-shrink:0}

/* Shared tabs */
.tab-group{display:flex;gap:8px;flex-wrap:wrap}
.tab{padding:8px 20px;border-radius:var(--radius-full);font-size:14px;border:1px solid var(--purple);background:var(--white);color:var(--purple);cursor:pointer;transition:all .2s}
.tab.active{background:var(--purple);color:var(--white)}

/* CTA */
.cta{background:linear-gradient(135deg,var(--purple-dark),var(--purple));padding:48px 16px;text-align:center}
.cta-inner{max-width:var(--max-width);margin:0 auto}
.cta h2{font-size:22px;font-weight:700;color:var(--white);margin-bottom:12px}
.cta p{font-size:14px;color:rgba(255,255,255,.8);margin-bottom:24px}

/* Footer */
.site-footer{background:var(--dark);color:var(--gray-text);padding:32px 16px;text-align:center}
.footer-inner{max-width:var(--max-width);margin:0 auto}
.site-footer p{font-size:13px}
.beian{margin-top:12px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.beian a{color:var(--gray-text);font-size:12px;transition:color .2s;display:inline-flex;align-items:center;gap:2px}
.beian a img{flex-shrink:0}
.beian a:hover{color:var(--purple-light)}

@media(min-width:768px){
	/* Header: taller, glass-morphism bg, three-section grid layout */
	.site-header{
		height:87px;
		background:rgba(255,255,255,0.96);
		border-bottom:none;
		box-shadow:0px 8px 24px -18px rgba(33,18,56,0.06);
		padding:0 24px;
	}
	/* Three-section: logo (left), nav (center), CTA (right) */
	.header-inner{
		display:grid;
		grid-template-columns:1fr auto 1fr;
		align-items:center;
		gap:24px;
	}
	.logo{grid-column:1;justify-self:start}
	.nav-desktop{display:flex;gap:28px;grid-column:2;justify-self:center}
	.nav-desktop a{color:var(--dark);font-size:14px;transition:color .2s}
	.nav-desktop a:hover,.nav-desktop a.active{color:var(--purple)}
	/* CTA pill button */
	.header-cta{
		display:inline-flex;
		align-items:center;
		gap:6px;
		grid-column:3;
		justify-self:end;
		font-size:14px;
		font-weight:600;
		color:var(--purple-dark);
		background:rgba(255,255,255,0.84);
		border:1px solid #eae2f7;
		border-radius:var(--radius-full);
		padding:10px 18px;
		text-decoration:none;
		transition:opacity .2s;
	}
	.header-cta:active{opacity:.8}
	.hamburger{display:none}
	.nav-mobile{display:none!important}
	.section{padding:64px 24px}
	.section h2{font-size:24px}
	.btn-primary{width:auto}
	.cta{padding:64px 24px}
	.cta h2{font-size:24px}
}