:root {
  --bg: #f6fbf8;
  --surface: #ffffff;
  --ink: #12312b;
  --muted: #4c6760;
  --line: #d8e7e2;
  --primary: #0f6e5b;
  --primary-ink: #ffffff;
  --accent: #df6f21;
  --max-width: 1100px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: radial-gradient(
    80rem 80rem at 110% -10%,
    #daf3ea 0%,
    var(--bg) 40%,
    #f4faf7 100%
  );
  color: var(--ink);
  font-family: 'Segoe UI', 'Noto Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
}

a {
  color: var(--primary);
}

a:hover {
  color: #0b5848;
}

.seo-page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1rem 4rem;
}

.seo-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.seo-brand {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.seo-links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.seo-links a {
  display: inline-block;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  font-size: 0.92rem;
  text-decoration: none;
  background: #ffffffc7;
}

.hero {
  background: linear-gradient(130deg, #e8f8f1 0%, #ffffff 48%, #fff4eb 100%);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: clamp(1.25rem, 3vw, 2.5rem);
  box-shadow: 0 20px 50px #2f5c5230;
}

.hero h1 {
  margin: 0;
  line-height: 1.2;
  font-size: clamp(1.6rem, 3.4vw, 2.7rem);
}

.hero p {
  margin: 0.85rem 0 0;
  max-width: 70ch;
  color: var(--muted);
}

.cta-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.1rem;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1rem;
  border-radius: 0.8rem;
  text-decoration: none;
  font-weight: 600;
}

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

.btn-secondary {
  border: 1px solid var(--line);
  background: #ffffffb0;
  color: var(--ink);
}

.keyword-strip {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.keyword-chip {
  border-radius: 999px;
  border: 1px solid var(--line);
  padding: 0.25rem 0.6rem;
  font-size: 0.8rem;
  color: #2f4f48;
  background: #ffffffb8;
}

.grid {
  margin-top: 1.2rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem;
}

.card h2,
.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

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

.section {
  margin-top: 1.2rem;
  background: #ffffffbd;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1rem;
}

.section h2 {
  margin: 0 0 0.6rem;
  font-size: 1.3rem;
}

.section p {
  margin: 0.55rem 0;
}

.faq {
  margin-top: 0.85rem;
}

.faq dt {
  font-weight: 700;
  margin: 0.7rem 0 0.2rem;
}

.faq dd {
  margin: 0;
  color: var(--muted);
}

.footer {
  margin-top: 1.5rem;
  border-top: 1px solid var(--line);
  padding-top: 0.8rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

#app-loading {
  display: none;
}

html.js #seo-shell {
  display: none;
}

html.js.loading-slow #app-loading {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.loading-card {
  width: min(32rem, 100%);
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #ffffffd9;
  box-shadow: 0 16px 40px #2f5c5229;
  padding: 1.1rem 1.15rem;
}

.loading-card h2 {
  margin: 0;
  font-size: 1.1rem;
}

.loading-card p {
  margin: 0.45rem 0 0;
  color: var(--muted);
}

.loading-links {
  margin-top: 0.65rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.loading-links a {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  padding: 0.25rem 0.6rem;
  text-decoration: none;
  font-size: 0.85rem;
}

html.js.flutter-ready #app-loading {
  display: none;
}