:root {
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --accent-soft: #eff6ff;
  --text: #0f172a;
  --text-secondary: #64748b;
  --border: #e2e8f0;
  --surface: #ffffff;
  --bg: #f8fafc;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  touch-action: manipulation;
}

body {
  min-height: 100vh;
  font-family:
    Inter,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "PingFang SC",
    "Microsoft YaHei",
    sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.08), transparent 42%),
    radial-gradient(circle at bottom right, rgba(14, 165, 233, 0.08), transparent 38%),
    var(--bg);
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #0ea5e9);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 18px;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  font-size: 14px;
}

.site-nav a {
  color: var(--text-secondary);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--accent);
}

.site-main {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

.hero {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px 32px;
  box-shadow:
    0 20px 45px rgba(15, 23, 42, 0.06),
    0 2px 8px rgba(15, 23, 42, 0.04);
}

.hero h1 {
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero .lead {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 640px;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-dark);
  text-decoration: none;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  background: var(--accent-soft);
  text-decoration: none;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
}

.feature-card h2 {
  font-size: 16px;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
}

.legal-doc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px 32px;
  box-shadow:
    0 20px 45px rgba(15, 23, 42, 0.06),
    0 2px 8px rgba(15, 23, 42, 0.04);
}

.legal-doc h1 {
  font-size: clamp(26px, 4vw, 34px);
  margin-bottom: 8px;
}

.legal-meta {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 28px;
}

.legal-doc h2 {
  font-size: 18px;
  margin: 28px 0 12px;
}

.legal-doc p,
.legal-doc li {
  color: var(--text);
  margin-bottom: 12px;
}

.legal-doc ul {
  padding-left: 1.25rem;
  margin-bottom: 12px;
}

.site-footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px 32px;
  color: var(--text-secondary);
  font-size: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  justify-content: space-between;
}

@media (max-width: 640px) {
  .hero,
  .legal-doc {
    padding: 28px 20px;
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }
}