:root {
  --accent: #1f6f5c;
  --accent-dark: #164f41;
  --accent-light: #e4efec;
  --ink: #1a1a1a;
  --grey: #5a5a5a;
  --grey-light: #8a8a8a;
  --line: #e2e2e0;
  --bg: #fbfaf8;
  --card-bg: #ffffff;
  --radius: 10px;
  --max-width: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Inter, system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

a { color: inherit; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
header.site {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}
header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.logo span { color: var(--accent); }
nav.main a {
  text-decoration: none;
  color: var(--grey);
  font-size: 0.92rem;
  margin-left: 22px;
  font-weight: 500;
}
nav.main a:hover { color: var(--accent); }

/* Hero */
.hero {
  padding: 72px 0 56px;
  text-align: center;
}
.hero h1 {
  font-size: 2.4rem;
  line-height: 1.15;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}
.hero p.lead {
  font-size: 1.1rem;
  color: var(--grey);
  max-width: 560px;
  margin: 0 auto 28px;
}
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.15s ease;
}
.btn:hover { background: var(--accent-dark); }
.btn.ghost {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}
.btn.ghost:hover { background: var(--accent-light); }
.btn.disabled {
  background: var(--line);
  color: var(--grey-light);
  cursor: default;
  pointer-events: none;
}

/* Niche grid */
.niche-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  padding: 10px 0 64px;
}
.niche-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 22px;
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.niche-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}
.niche-card .emoji { font-size: 1.8rem; margin-bottom: 10px; display: block; }
.niche-card h3 { margin: 0 0 6px; font-size: 1.05rem; }
.niche-card p { margin: 0; color: var(--grey); font-size: 0.88rem; }

/* Section */
section.block { padding: 48px 0; }
section.block.alt { background: var(--accent-light); }
section.block h2 {
  font-size: 1.5rem;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}
section.block p.intro {
  color: var(--grey);
  max-width: 640px;
  margin: 0 0 32px;
}

/* Guide cards */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.guide-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.guide-card h3 { margin: 0; font-size: 1.05rem; }
.guide-card p.desc { margin: 0; color: var(--grey); font-size: 0.9rem; flex-grow: 1; }
.guide-card .price { font-weight: 700; color: var(--accent-dark); font-size: 1.1rem; }
.empty-state {
  color: var(--grey);
  font-style: italic;
  padding: 24px 0;
}

/* Footer */
footer.site {
  border-top: 1px solid var(--line);
  padding: 36px 0;
  margin-top: 40px;
}
footer.site .wrap {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--grey);
}
footer.site a { color: var(--grey); text-decoration: none; }
footer.site a:hover { color: var(--accent); }

.disclaimer {
  background: var(--accent-light);
  border-left: 3px solid var(--accent);
  padding: 16px 20px;
  border-radius: 6px;
  font-size: 0.88rem;
  color: var(--grey);
  margin: 24px 0;
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--grey-light);
  padding-top: 20px;
}
.breadcrumb a { text-decoration: none; color: var(--grey-light); }
.breadcrumb a:hover { color: var(--accent); }

/* How it works */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}
.step-card { text-align: center; }
.step-num {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  margin: 0 auto 14px;
}
.step-card h3 { margin: 0 0 6px; font-size: 1rem; }
.step-card p { margin: 0; color: var(--grey); font-size: 0.88rem; }

/* FAQ */
.faq-list { max-width: 760px; }
.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.3rem;
  color: var(--accent);
  font-weight: 400;
}
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p {
  margin: 12px 0 0;
  color: var(--grey);
  font-size: 0.92rem;
}

/* CTA band */
.cta-band {
  text-align: center;
  padding: 56px 0;
}
.cta-band h2 { margin: 0 0 10px; }
.cta-band p { color: var(--grey); margin: 0 0 24px; }

/* Guide detail page */
.guide-hero {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  padding: 32px 0 16px;
  align-items: start;
}
.guide-hero h1 { font-size: 2rem; margin: 0 0 10px; line-height: 1.2; }
.guide-hero .sub { color: var(--grey); font-size: 1.05rem; margin: 0 0 18px; }
.buy-box {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  position: sticky;
  top: 84px;
}
.buy-box .price { font-size: 1.8rem; font-weight: 700; color: var(--accent-dark); margin-bottom: 4px; }
.buy-box .fmt { color: var(--grey); font-size: 0.85rem; margin-bottom: 16px; }
.buy-box .btn { display: block; text-align: center; width: 100%; }
.buy-box ul { margin: 16px 0 0; padding-left: 18px; color: var(--grey); font-size: 0.85rem; }
.buy-box ul li { margin-bottom: 6px; }

.inside-grid { display: grid; gap: 18px; }
.inside-item {
  display: flex;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.inside-item .num {
  flex: none;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent-dark);
  font-size: 0.8rem;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.inside-item h4 { margin: 0 0 4px; font-size: 0.98rem; }
.inside-item p { margin: 0; color: var(--grey); font-size: 0.9rem; }

.who-list { display: grid; gap: 10px; padding: 0; margin: 0; list-style: none; }
.who-list li {
  display: flex; gap: 10px; align-items: flex-start;
  font-size: 0.95rem; color: var(--ink);
}
.who-list li::before { content: "\2713"; color: var(--accent); font-weight: 700; flex: none; }

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}
.related-card {
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  text-decoration: none;
  color: var(--ink);
  background: var(--card-bg);
}
.related-card h4 { margin: 0 0 4px; font-size: 0.92rem; }
.related-card .price { color: var(--accent-dark); font-weight: 700; font-size: 0.88rem; }

.guide-title-link { text-decoration: none; color: inherit; }
.guide-title-link:hover { color: var(--accent); }

@media (max-width: 760px) {
  .guide-hero { grid-template-columns: 1fr; }
  .buy-box { position: static; }
}

@media (max-width: 600px) {
  .hero h1 { font-size: 1.8rem; }
  nav.main a { margin-left: 14px; font-size: 0.85rem; }
}