:root {
  --teal-900: #134e4a;
  --teal-700: #0f766e;
  --teal-600: #0d9488;
  --teal-100: #ccfbf1;
  --teal-50: #f0fdfa;
  --slate-900: #0f172a;
  --slate-700: #334155;
  --slate-500: #64748b;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --amber-100: #fef3c7;
  --amber-800: #92400e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--slate-900);
  background: #ffffff;
}

.site-header {
  background: var(--teal-900);
  color: #ffffff;
  padding: 14px 0;
}

.site-header .container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-header img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.site-header a {
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
}

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero {
  background: linear-gradient(180deg, var(--teal-50), #ffffff);
  padding: 56px 0 40px;
  text-align: center;
}

.hero h1 {
  font-size: 40px;
  margin: 0 0 8px;
  color: var(--teal-900);
}

.hero .tagline {
  font-size: 20px;
  color: var(--slate-700);
  margin: 0 0 24px;
}

.hero .cta {
  display: inline-block;
  background: var(--teal-600);
  color: #ffffff;
  border-radius: 8px;
  padding: 12px 24px;
  text-decoration: none;
  font-weight: 600;
}

.hero .cta:hover {
  background: var(--teal-700);
}

.hero .cta-note {
  font-size: 14px;
  color: var(--slate-500);
  margin-top: 10px;
}

main {
  padding: 32px 0 48px;
}

section {
  margin-bottom: 36px;
}

h2 {
  color: var(--teal-700);
  margin: 0 0 12px;
}

h3 {
  margin: 20px 0 6px;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  padding: 0;
  list-style: none;
  margin: 16px 0 0;
}

.features li {
  border: 1px solid var(--slate-200);
  border-radius: 10px;
  padding: 16px;
  background: #ffffff;
}

.features strong {
  color: var(--teal-700);
  display: block;
  margin-bottom: 4px;
}

.screenshot {
  display: block;
  max-width: 380px;
  width: 100%;
  margin: 24px auto 0;
  border: 1px solid var(--slate-200);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
}

.notice {
  background: var(--amber-100);
  color: var(--amber-800);
  border-radius: 10px;
  padding: 14px 18px;
}

table {
  border-collapse: collapse;
  width: 100%;
  font-size: 15px;
}

th,
td {
  border: 1px solid var(--slate-200);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--slate-100);
}

code {
  background: var(--slate-100);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.92em;
}

a {
  color: var(--teal-700);
}

.muted {
  color: var(--slate-500);
  font-size: 14px;
}

.site-footer {
  border-top: 1px solid var(--slate-200);
  padding: 18px 0 28px;
  text-align: center;
  font-size: 14px;
  color: var(--slate-500);
}

.site-footer a {
  color: var(--slate-500);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

.site-footer .sep {
  margin: 0 8px;
}