/* Core reset */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji"; color: #0f172a; background: radial-gradient(1000px 600px at 80% -10%, #e0f2fe55, transparent) no-repeat, #ffffff; }

/* Media defaults */
img, svg { max-width: 100%; height: auto; display: block; }

/* Layout */
.container { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { position: sticky; top: 0; backdrop-filter: saturate(180%) blur(10px); background: rgba(255,255,255,0.7); border-bottom: 1px solid #e2e8f0; z-index: 50; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; }
.brand .brand-name { font-weight: 700; letter-spacing: -0.02em; }
.logo { width: 28px; height: 28px; }
.nav a { color: #0f172a; text-decoration: none; margin-left: 18px; font-weight: 500; }
.nav .btn-small { padding: 8px 12px; border-radius: 10px; background: #0ea5e9; color: white; }

/* Hero */
.hero { padding: 72px 0 36px; background: linear-gradient(180deg, rgba(14,165,233,0.06), transparent 40%); }
.hero-inner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 24px; align-items: center; }
.hero h1 { font-size: 42px; line-height: 1.05; margin: 0 0 12px; letter-spacing: -0.02em; }
.lead { font-size: 18px; color: #334155; margin: 0 0 18px; }
.cta { display: flex; align-items: center; gap: 12px; margin: 16px 0 8px; }
.version-badge { color: #0369a1; font-weight: 600; }
.pill { display: inline-block; background: #f1f5f9; color: #0f172a; border: 1px solid #e2e8f0; padding: 6px 10px; border-radius: 999px; font-size: 12px; margin-right: 8px; }
.hero-art { display: flex; justify-content: center; }
.device-card { position: relative; width: 320px; height: 200px; background: linear-gradient(135deg, #0ea5e9, #22d3ee); border-radius: 20px; box-shadow: 0 30px 80px -20px rgba(2,132,199,0.45), inset 0 0 0 1px rgba(255,255,255,0.35); }
.device-card .port { position: absolute; width: 70px; height: 14px; background: #0c4a6e; top: 18px; right: 24px; border-radius: 8px; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.2); }
.device-card .glow { position: absolute; inset: 0; border-radius: 20px; background: radial-gradient(300px 160px at 30% 30%, rgba(255,255,255,0.65), transparent 60%); mix-blend-mode: overlay; }

/* Sections */
section { padding: 36px 0; }
h2 { font-size: 28px; margin: 0 0 14px; letter-spacing: -0.01em; }
.grid { display: grid; gap: 14px; }
.features-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card { background: white; border: 1px solid #e2e8f0; border-radius: 14px; padding: 16px; box-shadow: 0 6px 20px rgba(15,23,42,0.06); }
.card h3 { margin-top: 0; margin-bottom: 6px; font-size: 18px; }
.card p { margin: 0; color: #475569; }

.steps { margin: 0; padding-left: 18px; color: #334155; }

/* Download */
.download-card { display: flex; align-items: center; justify-content: space-between; gap: 16px; border: 1px solid #e2e8f0; border-radius: 14px; padding: 16px; background: linear-gradient(180deg, #f8fafc, #ffffff); }
.download-meta .label { display: inline-block; font-size: 12px; color: #075985; background: #e0f2fe; border: 1px solid #bae6fd; padding: 2px 8px; border-radius: 999px; margin-right: 8px; }

/* FAQ */
.faq-grid { display: grid; gap: 10px; }
details { border: 1px solid #e2e8f0; border-radius: 12px; padding: 10px 12px; background: #ffffff; }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 8px 0 0; color: #475569; }

/* Footer */
.site-footer { border-top: 1px solid #e2e8f0; background: #f8fafc; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.footer-inner a { color: #0f172a; text-decoration: none; margin-left: 12px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 16px; border-radius: 12px; text-decoration: none; font-weight: 600; border: 1px solid transparent; transition: transform .04s ease, box-shadow .2s ease, background .2s ease; }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: #0284c7; color: #ffffff; box-shadow: 0 8px 24px rgba(2,132,199,0.35); }
.btn-primary:hover { background: #0369a1; }
.btn-ghost { background: white; color: #0f172a; border-color: #e2e8f0; }

/* Responsive */
@media (max-width: 960px) {
	.hero-inner { grid-template-columns: 1fr; }
	.features-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
	.header-inner { height: auto; padding: 12px 0; align-items: start; gap: 8px; flex-wrap: wrap; }
	.nav { width: 100%; display: flex; flex-wrap: wrap; gap: 8px 12px; margin-top: 6px; }
	.nav a { margin-left: 0; }
	.hero { padding: 56px 0 24px; }
	.hero-inner { gap: 16px; }
	.hero h1 { font-size: 32px; }
	.lead { font-size: 16px; }
	.features-grid { grid-template-columns: 1fr; }
	.footer-inner { flex-direction: column; height: auto; padding: 12px 0; gap: 8px; }
}