:root {
  --bg: #f5f5f5;
  --card: #ffffff;
  --muted: #6b7280;
  --text: #111827;
  --border: #e5e7eb;
  --shadow: 0 1px 2px rgba(0,0,0,0.06);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

.site-header { position: sticky; top: 0; z-index: 20; background: var(--card); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; gap: 16px; }

.brand { display: flex; align-items: center; gap: 12px; }
.logo { width: 40px; height: 40px; border-radius: 16px; background: #000; }
.brand-name { font-weight: 700; }
.brand-sub { font-size: 12px; color: var(--muted); margin-top: 2px; }

.nav { display: none; gap: 18px; font-size: 14px; }
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover { color: #000; }
@media (min-width: 820px) { .nav { display: flex; } }

.section { padding: 56px 0; }
.section-white { background: var(--card); }
.section-border { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.grid-2 { display: grid; grid-template-columns: 1fr; gap: 28px; align-items: start; }
@media (min-width: 900px) { .grid-2 { grid-template-columns: 1.2fr 0.8fr; } }

h1 { font-size: 44px; line-height: 1.1; margin: 0; }
h2 { font-size: 30px; margin: 0; }
h3 { font-size: 16px; margin: 0; }
p { margin: 12px 0 0; color: #374151; }
.lead { font-size: 18px; color: var(--muted); max-width: 54ch; }

.cta-row { margin-top: 22px; display: flex; gap: 10px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  border: 1px solid transparent;
  box-shadow: var(--shadow);
}
.btn-primary { background: #000; color: #fff; }
.btn-primary:hover { opacity: 0.92; }
.btn-secondary { background: #fff; color: #000; border-color: var(--border); }
.btn-secondary:hover { background: #fafafa; }
.btn-block { width: 100%; margin-top: 12px; }

.stats { margin-top: 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; max-width: 560px; }
.stat { background: #fafafa; border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; }
.stat-label { font-size: 12px; color: var(--muted); }
.stat-value { margin-top: 6px; font-weight: 700; font-size: 14px; }

.panel {
  background: #fafafa;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.panel-title { font-weight: 700; font-size: 14px; }
.panel-box { margin-top: 14px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; }

.bullets { margin: 12px 0 0; padding-left: 18px; color: #374151; }
.bullets li { margin: 8px 0; }

.tags { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 8px; }
.tag { font-size: 12px; padding: 6px 10px; border-radius: 999px; border: 1px solid var(--border); background: #fafafa; color: #374151; }

.cards { margin-top: 16px; display: grid; gap: 10px; }
.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.card p { margin-top: 8px; color: var(--muted); font-size: 14px; }

.features { margin-top: 16px; display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 720px) { .features { grid-template-columns: 1fr 1fr; } }
.feature { background: #fafafa; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.feature p { margin-top: 8px; color: var(--muted); font-size: 14px; }

.value-row { margin-top: 14px; display: flex; gap: 12px; align-items: flex-start; }
.value-icon { width: 40px; height: 40px; border-radius: 16px; background: #000; flex-shrink: 0; }
.value-title { font-weight: 700; font-size: 14px; }

.steps { margin-top: 18px; display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 900px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.step { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.step-n { font-size: 12px; color: var(--muted); }
.step-title { margin-top: 6px; font-weight: 700; }

.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: 14px; color: var(--muted); margin-top: 8px; }
.max { max-width: 70ch; margin-left: auto; margin-right: auto; }

.mt { margin-top: 18px; }

.toggle { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.toggle-btn {
  appearance: none;
  border: 1px solid var(--border);
  background: #fff;
  padding: 10px 12px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
}
.toggle-btn:hover { background: #fafafa; }
.toggle-btn.is-active { background: #000; color: #fff; border-color: #000; }

.biz { margin-top: 16px; }
.biz-title { font-weight: 700; margin-bottom: 6px; }

.footer { background: #fff; border-top: 1px solid var(--border); padding: 18px 0; }
.footer-inner { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; color: var(--muted); font-size: 14px; }
.footer-links { display: flex; gap: 14px; }
.footer a { color: var(--muted); text-decoration: none; }
.footer a:hover { color: #000; }
@media (min-width: 720px) {
  .footer-inner { flex-direction: row; align-items: center; justify-content: space-between; }
}