:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --blue: #2563eb;
  --line: #e2e8f0;
  --radius: 20px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --shadow: 0 12px 32px rgba(15, 23, 42, 0.06);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
a { color: var(--blue); text-decoration: none; }
.wrap { width: min(1040px, 92vw); margin: 0 auto; }
.center { text-align: center; }

.top {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid var(--line);
}
.top-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 0;
}
.brand {
  color: var(--text); font-weight: 800; font-size: 17px;
  display: inline-flex; align-items: center; gap: 10px;
}
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px;
  display: grid; place-items: center;
  background: linear-gradient(145deg, #3b82f6, #0ea5e9);
  color: #fff; font-weight: 800; font-size: 16px;
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
}
nav { display: flex; gap: 16px; align-items: center; }
nav a { color: var(--muted); font-size: 14px; }
nav a:hover { color: var(--text); }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px; padding: 8px 14px; font-weight: 700; font-size: 13px;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  color: #fff !important;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.2);
}
.btn-sm { padding: 8px 14px; }

.hero {
  padding: 72px 0 56px;
  background:
    radial-gradient(900px 420px at 85% -20%, rgba(37, 99, 235, 0.14), transparent 55%),
    radial-gradient(700px 360px at 5% 30%, rgba(14, 165, 233, 0.1), transparent 50%),
    linear-gradient(180deg, #ffffff 0%, #f4f7fb 100%);
  border-bottom: 1px solid var(--line);
}
.hero-inner { max-width: 720px; }
.eyebrow {
  color: var(--blue); font-weight: 700; letter-spacing: 0.06em;
  margin: 0 0 14px; font-size: 13px; text-transform: uppercase;
}
.brand-hero {
  margin: 0 0 16px;
  font-size: clamp(40px, 7vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 900;
  background: linear-gradient(100deg, #0f172a 20%, #2563eb 75%, #0ea5e9);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lead {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
  max-width: 34em;
}

.section { padding: 56px 0 72px; }
.section h2 {
  margin: 0 0 8px;
  font-size: clamp(24px, 3vw, 32px);
}
.section-sub {
  color: var(--muted);
  margin: 0 0 32px;
  line-height: 1.6;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.product-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: start;
  padding: 22px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: inherit;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}
a.product-card:hover {
  transform: translateY(-3px);
  border-color: #bfdbfe;
  box-shadow: 0 16px 36px rgba(37, 99, 235, 0.12);
}
.product-card.muted {
  opacity: 0.72;
  background: #f8fafc;
  cursor: default;
}
.product-ico {
  width: 64px; height: 64px; border-radius: 16px;
  object-fit: cover;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.08);
}
.product-ico.placeholder {
  display: grid; place-items: center;
  background: #e2e8f0; color: #94a3b8;
  font-size: 28px; font-weight: 300;
  box-shadow: none;
}
.product-body h3 {
  margin: 2px 0 8px;
  font-size: 20px;
  color: var(--text);
}
.product-body p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}
.product-cta {
  font-size: 13px;
  font-weight: 700;
  color: var(--blue);
}
.product-cta.soon {
  color: var(--muted);
  font-weight: 600;
}

.foot {
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--line);
  background: #fff;
}
.foot a { color: var(--muted); }
.foot p { margin: 0 0 6px; }

@media (max-width: 720px) {
  .hero { padding: 48px 0 40px; }
  .product-grid { grid-template-columns: 1fr; }
  nav a:not(.btn) { display: none; }
}