:root {
  --brand-teal: #19e6c4;
  --brand-teal-dark: #14bba0;
  --brand-ink: #0d1b18;
  --brand-ink-soft: #11211e;
  --text: #22312d;
  --text-muted: #5a6b66;
  --bg: #ffffff;
  --bg-soft: #f3f8f6;
  --border: #dce7e3;
  --max-width: 880px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: #0e8a74;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Header */
.site-header {
  background: var(--brand-ink);
  color: #fff;
  border-bottom: 3px solid var(--brand-teal);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  display: block;
}

.brand-name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.2px;
}

.brand-tagline {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
}

.header-inner .brand-text {
  margin-right: auto;
}

.main-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.main-nav a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  font-weight: 600;
}

.main-nav a:hover {
  color: var(--brand-teal);
  text-decoration: none;
}

/* Layout */
.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 34px 20px 60px;
}

.hero {
  background: linear-gradient(
    180deg,
    var(--bg-soft) 0%,
    var(--bg) 100%
  );
  border-bottom: 1px solid var(--border);
  padding: 56px 20px 48px;
  text-align: center;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero h1 {
  font-size: 34px;
  margin: 0 0 12px;
  color: var(--brand-ink);
  letter-spacing: -0.4px;
}

.hero p.lead {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 26px;
}

.hero-logo {
  width: 88px;
  height: 88px;
  border-radius: 20px;
  margin: 0 auto 20px;
  display: block;
  box-shadow: 0 10px 30px rgba(13, 27, 24, 0.18);
}

.btn-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  transition: opacity 0.15s ease;
}

.btn-primary {
  background: var(--brand-teal);
  color: var(--brand-ink);
}

.btn-primary:hover {
  opacity: 0.88;
  text-decoration: none;
}

.btn-ghost {
  border: 1px solid var(--brand-teal-dark);
  color: var(--brand-teal-dark);
}

.btn-ghost:hover {
  background: rgba(20, 187, 160, 0.08);
  text-decoration: none;
}

/* Typography */
h1 {
  font-size: 28px;
  color: var(--brand-ink);
}

h2 {
  font-size: 22px;
  color: var(--brand-ink);
  margin-top: 42px;
}

h3 {
  font-size: 17px;
  color: var(--brand-ink);
  margin-top: 28px;
}

.page-intro {
  color: var(--text-muted);
  font-size: 16px;
}

.muted {
  color: var(--text-muted);
}

.small {
  font-size: 13px;
}

/* Cards and lists */
.card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px;
  margin: 18px 0;
}

.card h3 {
  margin-top: 0;
}

ul,
ol {
  padding-left: 22px;
}

li {
  margin-bottom: 6px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  margin: 26px 0;
}

.feature {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
}

.feature h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.feature p {
  margin: 0;
  font-size: 14px;
  color: var(--text-muted);
}

.callout {
  border-left: 4px solid var(--brand-teal-dark);
  background: var(--bg-soft);
  padding: 14px 18px;
  border-radius: 0 10px 10px 0;
  margin: 20px 0;
}

.callout.warn {
  border-left-color: #e2a13c;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin: 16px 0;
}

th,
td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  vertical-align: top;
}

th {
  color: var(--brand-ink);
  font-weight: 700;
}

code {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
  font-size: 13px;
}

/* Footer */
.site-footer {
  background: var(--brand-ink);
  color: rgba(255, 255, 255, 0.78);
  margin-top: 40px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 28px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.85);
  margin-right: 16px;
}

.footer-links a:hover {
  color: var(--brand-teal);
  text-decoration: none;
}

@media (max-width: 640px) {
  .hero h1 {
    font-size: 26px;
  }
  .brand-tagline {
    display: none;
  }
}