:root {
  --brand: #1296db;
  --brand-dark: #0d7ab8;
  --bg: #f8fafc;
  --card: #fff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --ok: #059669;
  --warn: #d97706;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.55 system-ui, -apple-system, "PingFang SC", "Noto Sans SC", sans-serif;
  color: var(--text);
  background: var(--bg);
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }

header.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
  gap: 12px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text);
}
.logo-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--brand);
}
.nav { display: flex; gap: 8px; flex-wrap: wrap; }
.nav button, .nav a.btn {
  border: 0;
  background: transparent;
  font: inherit;
  cursor: pointer;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--text);
}
.nav .btn-primary {
  background: var(--brand);
  color: #fff;
}
.nav .btn-primary:hover { background: var(--brand-dark); text-decoration: none; }

.hero {
  padding: 48px 0 32px;
  text-align: center;
}
.hero h1 { font-size: clamp(24px, 4vw, 36px); margin: 0 0 12px; }
.hero p { color: var(--muted); max-width: 640px; margin: 0 auto 16px; line-height: 1.65; }
.hero-lead { font-size: 15px; text-align: left; }
.hero-cta { text-align: center; margin-bottom: 20px !important; }
.hero-points {
  text-align: left;
  max-width: 640px;
  margin: 0 auto 20px;
  padding-left: 1.2em;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}
.hero-points li { margin-bottom: 8px; }
.hero-points strong { color: var(--text); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, .06);
  max-width: 420px;
  margin: 0 auto 32px;
}
.card h2 { margin: 0 0 6px; font-size: 20px; }
.card .sub { color: var(--muted); font-size: 13px; margin-bottom: 16px; }

label { display: block; font-size: 13px; color: var(--muted); margin: 12px 0 6px; }
input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font: inherit;
}
button.btn-block {
  width: 100%;
  margin-top: 16px;
  padding: 11px;
  border: 0;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
  font: inherit;
  cursor: pointer;
}
button.btn-block:hover { background: var(--brand-dark); }
button.btn-ghost {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text);
}

.msg { margin-top: 10px; font-size: 13px; }
.msg.err { color: #dc2626; }
.msg.ok { color: var(--ok); }

.hidden { display: none !important; }

.dashboard {
  max-width: 720px;
  margin: 24px auto 48px;
}
.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 16px;
}
.panel h3 { margin: 0 0 12px; font-size: 17px; }
.license-box {
  background: #f1f5f9;
  border-radius: 10px;
  padding: 14px;
  font-family: ui-monospace, Menlo, monospace;
  font-size: 14px;
  word-break: break-all;
}
.status-pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  margin-bottom: 10px;
}
.status-pill.on { background: #dcfce7; color: #166534; }
.status-pill.off { background: #fee2e2; color: #991b1b; }

.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 32px 0 24px;
}

.rules-section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  margin: 0 0 48px;
}
.rules-section h2 {
  margin: 0 0 8px;
  font-size: 20px;
  text-align: center;
}
.rules-intro {
  margin: 0 0 16px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}
.rules-table-wrap { overflow-x: auto; }
.rules-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.rules-table th,
.rules-table td {
  border: 1px solid var(--border);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}
.rules-table th {
  background: #f1f5f9;
  color: var(--text);
  font-weight: 600;
  width: 38%;
}
.rules-table tbody tr:nth-child(even) td {
  background: #fafbfc;
}
@media (max-width: 640px) {
  .rules-table th,
  .rules-table td { display: block; width: 100%; }
  .rules-table th { border-bottom: 0; }
}
.price-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  text-align: center;
}
.price-card b { font-size: 28px; color: var(--brand); }

footer {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  padding: 24px 0 40px;
}