:root {
  --ink: #1a1a1a;
  --ink-soft: #4a4a4a;
  --bg: #ffffff;
  --bg-alt: #f6f4f1;
  --accent: #b5651d;
  --accent-dark: #8a4d15;
  --border: #e4e0da;
  --radius: 10px;
  --max-width: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f1efec;
    --ink-soft: #c9c5be;
    --bg: #17140f;
    --bg-alt: #201b14;
    --accent: #e0955a;
    --accent-dark: #f2b27f;
    --border: #332c22;
  }
}

* { box-sizing: border-box; }

html, body { overflow-x: hidden; max-width: 100%; }

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

img, svg { max-width: 100%; height: auto; }

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

h1, h2, h3 { line-height: 1.2; margin: 0 0 16px; }
h1 { font-size: clamp(2rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.15rem; }
p { color: var(--ink-soft); margin: 0 0 12px; }

a { color: var(--accent-dark); }

.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.logo {
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
  font-size: 1.05rem;
}
.site-header nav {
  display: flex;
  gap: 20px;
}
.site-header nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-dark); }
.btn-lg { padding: 14px 28px; font-size: 1.05rem; }

.hero {
  padding: 72px 0 56px;
  text-align: center;
}
.hero .lead {
  max-width: 640px;
  margin: 0 auto 28px;
  font-size: 1.1rem;
}
.cta-row { margin-bottom: 12px; }
.hint { font-size: 0.85rem; color: var(--ink-soft); }

.section { padding: 56px 0; }
.section.alt { background: var(--bg-alt); }
.section h2 { text-align: center; margin-bottom: 32px; }
#problem p { max-width: 640px; margin: 0 auto; text-align: center; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.section.alt .card { background: var(--bg); }

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}
.steps li { text-align: left; }

.faq { max-width: 720px; margin: 0 auto; }
.faq details {
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
}
.faq p { margin-top: 10px; }

.cta-final { text-align: center; }

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

@media (max-width: 640px) {
  .wrap { padding: 0 16px; }

  .site-header .wrap { gap: 12px; }
  .site-header nav { display: none; }
  .logo { font-size: 0.95rem; }

  .hero { padding: 40px 0 32px; }
  .hero .lead { font-size: 1rem; }

  .section { padding: 36px 0; }
  .section h2 { margin-bottom: 24px; }

  .btn { padding: 9px 16px; font-size: 0.9rem; }
  .btn-lg { padding: 13px 22px; font-size: 1rem; }

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

@media (max-width: 360px) {
  .hero { padding: 32px 0 28px; }
  h1 { font-size: 1.65rem; }
}