:root {
  --ink: #232838;
  --muted: #7b8399;
  --bg: #f7f8fc;
  --line: #e3e7f0;
  --accent: #4a6cf7;
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); line-height: 1.7; }
.wrap { max-width: 980px; margin: 0 auto; padding: 0 20px; }
a { color: var(--accent); text-decoration: none; }
.site-header { background: #fff; border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; justify-content: space-between; align-items: center; height: 60px; }
.brand { font-weight: 700; color: var(--ink); }
.brand span { color: var(--muted); font-weight: 400; font-size: 13px; }
.site-header nav a { margin-left: 16px; font-size: 14px; color: var(--muted); }
.hero { padding: 64px 0 40px; background: #fff; border-bottom: 1px solid var(--line); }
.eyebrow { color: var(--accent); font-size: 13px; letter-spacing: 0.05em; }
h1 { font-size: 32px; margin: 8px 0 12px; line-height: 1.35; }
.lead { color: var(--muted); max-width: 640px; }
.actions { margin: 22px 0 10px; }
.btn { display: inline-block; padding: 9px 18px; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink); margin-right: 10px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.note { color: var(--muted); font-size: 12px; }
.section { padding: 40px 0; }
.section h2 { font-size: 20px; margin-bottom: 14px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 18px; }
.card h3 { margin: 0 0 8px; font-size: 15px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }
.placeholder { background: #fff; border: 1px dashed #c9d2e6; border-radius: 12px; padding: 40px 12px; text-align: center; color: var(--muted); font-size: 14px; }
.two-col { display: grid; grid-template-columns: 1.2fr 1fr; gap: 24px; align-items: start; }
.qr .placeholder { padding: 60px 12px; }
.muted { color: var(--muted); }
.site-footer { background: #fff; border-top: 1px solid var(--line); padding: 20px 0; font-size: 13px; color: var(--muted); }
.site-footer .wrap { display: flex; justify-content: space-between; }
@media (max-width: 720px) { .two-col { grid-template-columns: 1fr; } h1 { font-size: 24px; } }