:root {
  --bg: #f6f8f5;
  --ink: #14231a;
  --muted: #4d6356;
  --brand: #1b4332;
  --brand-2: #2d6a4f;
  --accent: #95d5b2;
  --card: #ffffff;
  --line: #d8e2da;
  --warn: #9b2226;
  --shadow: 0 10px 30px rgba(20, 35, 26, 0.08);
  --radius: 16px;
  --max: 1100px;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(149,213,178,.35), transparent 40%),
    radial-gradient(circle at top right, rgba(45,106,79,.12), transparent 35%),
    var(--bg);
  line-height: 1.55;
}
a { color: var(--brand-2); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: min(var(--max), calc(100% - 2rem)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(246,248,245,.9);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.9rem 0; gap: 1rem;
}
.logo { font-weight: 800; color: var(--brand); letter-spacing: -0.02em; font-size: 1.15rem; }
.nav-links { display: flex; gap: 1rem; flex-wrap: wrap; font-size: 0.95rem; }
.nav-links a { color: var(--muted); text-decoration: none; }
.nav-links a:hover { color: var(--brand); }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px; padding: 0.7rem 1.15rem; font-weight: 700;
  border: 0; cursor: pointer; text-decoration: none !important;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-2); }
.btn-secondary { background: #fff; color: var(--brand); border: 1px solid var(--line); }
.btn-ghost { background: transparent; color: var(--brand); border: 1px solid var(--line); }
.hero { padding: 4rem 0 2.5rem; display: grid; grid-template-columns: 1.3fr 0.9fr; gap: 2rem; align-items: center; }
.eyebrow {
  display: inline-block; background: rgba(45,106,79,.1); color: var(--brand-2);
  border-radius: 999px; padding: 0.25rem 0.7rem; font-size: 0.85rem; font-weight: 700;
}
h1 { font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.1; margin: 0.7rem 0; letter-spacing: -0.03em; }
.lead { color: var(--muted); font-size: 1.08rem; max-width: 38rem; }
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 1.4rem; }
.hero-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 1.4rem;
}
.hero-card h3 { margin: 0 0 0.5rem; }
.hero-card ul { margin: 0; padding-left: 1.1rem; color: var(--muted); }
.section { padding: 2.5rem 0; }
.section h2 { margin: 0 0 0.4rem; font-size: 1.8rem; letter-spacing: -0.02em; }
.section .sub { color: var(--muted); margin: 0 0 1.5rem; }
.grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
}
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.2rem; display: flex; flex-direction: column; gap: 0.7rem; box-shadow: var(--shadow);
}
.card h3 { margin: 0; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); flex: 1; font-size: 0.95rem; }
.price { font-weight: 800; color: var(--brand); font-size: 1.25rem; }
.badge {
  align-self: flex-start; font-size: 0.75rem; font-weight: 700; color: var(--brand-2);
  background: rgba(149,213,178,.35); padding: 0.15rem 0.5rem; border-radius: 999px;
}
.bundle {
  background: linear-gradient(135deg, #1b4332, #2d6a4f); color: #fff;
  border-radius: 24px; padding: 1.8rem; display: grid; grid-template-columns: 1.4fr 0.8fr; gap: 1rem;
  align-items: center; box-shadow: var(--shadow);
}
.bundle .price { color: #d8f3dc; font-size: 2rem; }
.bundle .save { opacity: 0.9; }
.bundle .btn-primary { background: #fff; color: var(--brand); }
.lead-magnet {
  background: var(--card); border: 1px dashed var(--brand-2); border-radius: var(--radius);
  padding: 1.5rem; display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 1rem; align-items: center;
}
.lead-form { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.lead-form input {
  flex: 1; min-width: 200px; border: 1px solid var(--line); border-radius: 999px;
  padding: 0.75rem 1rem; font: inherit;
}
.faq details {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 0.9rem 1rem; margin-bottom: 0.6rem;
}
.faq summary { cursor: pointer; font-weight: 700; }
.faq p { color: var(--muted); margin: 0.6rem 0 0; }
.site-footer {
  border-top: 1px solid var(--line); padding: 2rem 0 3rem; color: var(--muted); font-size: 0.92rem;
}
.disclaimer { color: var(--warn); font-size: 0.88rem; }
@media (max-width: 900px) {
  .hero, .bundle, .lead-magnet, .grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}
.card .thumb { width: 100%; height: auto; aspect-ratio: 1/1; object-fit: cover; border-radius: 12px; border: 1px solid var(--line); }
.lead-cta { display: flex; flex-direction: column; align-items: flex-start; gap: .6rem; }
.lead-cta .thumb { width: 160px; height: auto; border-radius: 12px; border: 1px solid var(--line); }
.lead-cta small { color: var(--muted); }

/* guides */
.article { max-width: 760px; padding: 2.5rem 0 1rem; }
.article h1 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
.article h2 { margin-top: 2rem; font-size: 1.45rem; letter-spacing: -0.01em; }
.article h3 { margin-top: 1.3rem; font-size: 1.1rem; }
.article p, .article li { font-size: 1.04rem; }
.article table { width: 100%; border-collapse: collapse; margin: 1rem 0; background: var(--card); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; font-size: .97rem; }
.article th, .article td { text-align: left; padding: .55rem .75rem; border-bottom: 1px solid var(--line); }
.article th { background: rgba(149,213,178,.25); }
.article .note { background: rgba(45,106,79,.07); border-left: 4px solid var(--brand-2); padding: .8rem 1rem; border-radius: 8px; font-size: .95rem; color: var(--muted); }
.article .formula { background: var(--card); border: 1px dashed var(--brand-2); padding: .8rem 1rem; border-radius: 10px; font-weight: 700; color: var(--brand); }
.crumbs { font-size: .9rem; color: var(--muted); }
.meta { color: var(--muted); font-size: .9rem; }
.cta-box { margin: 2.2rem 0; background: linear-gradient(135deg, #1b4332, #2d6a4f); color: #fff; border-radius: 20px; padding: 1.5rem; box-shadow: var(--shadow); }
.cta-box h2 { margin: 0 0 .4rem; color: #fff; }
.cta-box p { color: #e3f4e8; }
.cta-box .btn-primary { background: #fff; color: var(--brand); }
.cta-box .btn-ghost { color: #fff; border-color: rgba(255,255,255,.5); }
.cta-actions { display: flex; gap: .6rem; flex-wrap: wrap; margin-top: .8rem; }
.guide-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
@media (max-width: 900px) { .guide-list { grid-template-columns: 1fr; } }