:root {
  --bg: #f4f6fb;
  --panel: #ffffff;
  --text: #1a2333;
  --muted: #5e6b84;
  --primary: #21a453;
  --primary-dark: #178543;
  --border: #dce2ef;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}

.topnav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.topnav a {
  text-decoration: none;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 14px;
}

.topnav a:hover {
  border-color: #b9c5de;
}

.hero {
  text-align: center;
  margin: 24px 0 28px;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: 40px;
}

.hero-logo {
  width: 220px;
  max-width: 80%;
  border-radius: 16px;
  display: block;
  margin: 0 auto 14px;
  border: 1px solid #d7e2f5;
}

.hero p {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.pricing {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.section-title {
  text-align: center;
  margin: 56px 0 18px;
}

.section-title h2 {
  margin: 0 0 8px;
  font-size: 36px;
}

.section-title p {
  margin: 0;
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

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

.feature-card h3 {
  margin: 0 0 8px;
  font-size: 24px;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
}

.faq-list {
  display: grid;
  gap: 10px;
}

.faq-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0 14px;
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 0;
  font-weight: 600;
}

.faq-item p {
  margin: 0 0 14px;
  color: var(--muted);
}

.form-card {
  max-width: 620px;
  margin: 0 auto;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 26px;
}

.field {
  display: grid;
  gap: 8px;
  margin: 16px 0;
}

.field label {
  font-weight: 600;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid #cbd4e8;
  border-radius: 10px;
  padding: 12px;
  font: inherit;
}

.hint {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.site-footer {
  margin-top: 44px;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 16px;
}

.footer-col h4 {
  margin: 0 0 10px;
  font-size: 15px;
}

.footer-col p,
.footer-col li,
.footer-col a {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.footer-col ul {
  margin: 0;
  padding-left: 0;
  list-style: none;
}

.footer-col li {
  margin: 7px 0;
}

.footer-col a {
  text-decoration: none;
}

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

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
}

.card.pro {
  border: 2px solid #5fd291;
}

.badge {
  display: inline-block;
  border-radius: 999px;
  background: #eaf9ef;
  color: #14723a;
  border: 1px solid #c6edd5;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
}

.price {
  margin: 8px 0 6px;
  font-size: 46px;
  font-weight: 700;
}

.price-note {
  font-size: 22px;
  font-weight: 600;
  color: var(--muted);
  vertical-align: middle;
}

.subtext {
  color: var(--muted);
  margin-bottom: 16px;
}

ul {
  margin: 0 0 20px;
  padding-left: 20px;
}

li {
  margin: 8px 0;
}

.button {
  display: inline-block;
  width: 100%;
  text-align: center;
  text-decoration: none;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #f8f9fd;
  color: var(--text);
  padding: 13px 16px;
  font-weight: 600;
}

.button.primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.button.primary:hover {
  background: var(--primary-dark);
}

.button.is-disabled,
.button[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
}

.panel h1 {
  margin-top: 0;
}

.panel h2 {
  margin-top: 24px;
  margin-bottom: 8px;
}

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

.footer-note {
  margin-top: 24px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 850px) {
  .hero h1 {
    font-size: 32px;
  }

  .pricing {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}