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

:root {
  --primary: #2d9b83;
  --primary-dark: #1e7a66;
  --primary-light: #c8f0e4;
  --bg: #f5f4f1;
  --card: #ffffff;
  --text: #1a1918;
  --text-secondary: #6d6c6a;
  --text-tertiary: #9c9b99;
  --border: #e5e4e1;
  --danger: #d08068;
  --warning: #d4a64a;
  --radius: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  min-height: 100vh;
}

/* Navigation */
nav {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  position: sticky;
  top: 0;
  z-index: 100;
}
nav .nav-inner {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
nav .logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
}
nav .links {
  display: flex;
  gap: 24px;
}
nav .links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}
nav .links a:hover {
  color: var(--primary);
}

/* Container */
.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 24px;
}
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.04);
  margin-bottom: 24px;
}

/* Hero */
.hero {
  text-align: center;
  padding: 60px 24px;
}
.hero-icon {
  width: 80px;
  height: 80px;
  background: var(--primary);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 36px;
  color: white;
}
.hero h1 {
  font-size: 36px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}
.hero .tagline {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 32px 0;
}
.feature {
  background: var(--card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
}
.feature-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  font-size: 20px;
  color: var(--primary);
}
.feature h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}
.feature p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.2s;
}
.btn:hover { opacity: 0.85; }
.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-danger {
  background: var(--danger);
  color: white;
}
.btn-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 24px;
}

/* Page content */
h1 { font-size: 28px; font-weight: 700; margin-bottom: 8px; color: var(--primary); }
h2 { font-size: 18px; font-weight: 600; margin-top: 28px; margin-bottom: 12px; color: #1f1e1c; }
h3 { font-size: 16px; font-weight: 600; margin-top: 20px; margin-bottom: 8px; }
p, li { font-size: 15px; color: #3a3937; margin-bottom: 12px; }
ul { padding-left: 24px; margin-bottom: 12px; }
li { margin-bottom: 6px; }
strong { color: var(--text); }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.highlight {
  background: var(--primary-light);
  padding: 16px 20px;
  border-radius: 12px;
  margin: 20px 0;
  font-size: 14px;
}
.warning {
  background: #fff0e0;
  padding: 16px 20px;
  border-radius: 12px;
  margin: 20px 0;
  font-size: 14px;
  border-left: 4px solid var(--warning);
}

/* Steps */
.steps {
  counter-reset: step;
  list-style: none;
  padding-left: 0;
}
.steps li {
  counter-increment: step;
  padding: 12px 16px 12px 52px;
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 8px;
}
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 16px;
  top: 12px;
  width: 28px;
  height: 28px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}

/* Table */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
}
th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th {
  font-weight: 600;
  color: var(--text-tertiary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Footer */
footer {
  text-align: center;
  padding: 40px 24px;
  color: var(--text-tertiary);
  font-size: 13px;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}
footer a { color: var(--text-secondary); }

/* FAQ */
.faq-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 8px;
  overflow: hidden;
}
.faq-q {
  padding: 16px 20px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-q:hover { background: var(--bg); }
.faq-a {
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  display: none;
}
.faq-item.open .faq-a { display: block; }
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-arrow { transition: transform 0.2s; font-size: 12px; }

/* Responsive */
@media (max-width: 600px) {
  .card { padding: 24px; }
  .hero { padding: 40px 16px; }
  .hero h1 { font-size: 28px; }
  nav .links { gap: 16px; }
  nav .links a { font-size: 13px; }
}