:root {
  --green: #2e7d32;
  --green-dark: #1b5e20;
  --green-light: #e8f5e9;
  --amber: #f57f17;
  --ink: #26332a;
  --muted: #5f6f63;
  --maxw: 1080px;
  --radius: 10px;
  --shadow: 0 8px 24px rgba(27, 94, 32, 0.12);
  --font: "Segoe UI", Tahoma, Geneva, Verdana, Arial, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: var(--font); color: var(--ink); line-height: 1.6; background: #fff; }
img { max-width: 100%; height: auto; display: block; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.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; }

h1, h2, h3 { line-height: 1.2; color: var(--green-dark); }
.section-lead { color: var(--muted); max-width: 680px; }

.btn {
  display: inline-block; background: var(--amber); color: #fff; text-decoration: none;
  font-weight: 700; padding: 13px 28px; border-radius: 999px;
  box-shadow: 0 6px 16px rgba(245, 127, 23, 0.35); transition: transform .15s, background .2s;
}
.btn:hover { background: #e06f00; transform: translateY(-2px); }

/* header */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--green); color: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.15); }
.header-inner { display: flex; align-items: center; gap: 16px; min-height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-size: 1.25rem; z-index: 60; }
.brand-mark { font-size: 1.4rem; }
.brand-name strong { font-weight: 800; }
.main-navigation { margin-left: auto; }
.primary-nav { list-style: none; display: flex; gap: 4px; margin: 0; padding: 0; }
.primary-nav a { display: block; padding: 9px 15px; color: #fff; text-decoration: none; font-weight: 600; border-radius: 6px; transition: background .2s; }
.primary-nav a:hover, .primary-nav a:focus { background: rgba(255,255,255,0.18); }
.nav-toggle { display: none; align-items: center; gap: 8px; margin-left: auto; z-index: 60; padding: 9px 15px; background: var(--green-dark); color: #fff; border: 0; border-radius: 8px; font: inherit; font-weight: 700; cursor: pointer; }
.nav-toggle-bars, .nav-toggle-bars::before, .nav-toggle-bars::after { display: block; width: 20px; height: 2px; background: #fff; position: relative; }
.nav-toggle-bars::before, .nav-toggle-bars::after { content: ""; position: absolute; left: 0; }
.nav-toggle-bars::before { top: -6px; } .nav-toggle-bars::after { top: 6px; }

/* hero */
.hero { background: linear-gradient(135deg, var(--green), var(--green-dark)); color: #fff; padding: 70px 0; text-align: center; }
.hero h1 { color: #fff; margin: 0 auto 18px; font-size: clamp(1.8rem, 4.5vw, 2.9rem); max-width: 820px; }
.hero-sub { margin: 0 auto 30px; max-width: 700px; font-size: 1.15rem; opacity: 0.95; }

/* pragas grid */
.pragas { padding: 64px 0; }
.pragas h2 { margin: 0 0 8px; font-size: clamp(1.5rem, 3.2vw, 2.1rem); }
.praga-grid { list-style: none; margin: 30px 0 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.praga-grid > * { min-width: 0; }
.praga-card {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  background: var(--green-light); border: 1px solid #cfe6d1; border-radius: var(--radius);
  padding: 18px 10px; text-align: center; font-weight: 600; color: var(--green-dark);
  transition: transform .15s, box-shadow .2s;
}
.praga-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.praga-card img { width: 48px; height: 48px; object-fit: contain; }

/* tipos */
.tipos { padding: 64px 0; background: var(--green-light); }
.tipos h2 { margin: 0 0 8px; font-size: clamp(1.5rem, 3.2vw, 2.1rem); }
.tipos-list { list-style: none; margin: 26px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.tipos-list li { background: #fff; border-left: 4px solid var(--green); border-radius: 8px; padding: 16px 18px; font-weight: 600; box-shadow: var(--shadow); }

/* sobre */
.sobre { padding: 64px 0; }
.sobre h2 { margin: 0 0 18px; font-size: clamp(1.5rem, 3.2vw, 2.1rem); }
.sobre p { max-width: 820px; margin: 0 0 16px; }

/* faq */
.faq { padding: 64px 0; background: var(--green-light); }
.faq h2 { margin: 0 0 24px; font-size: clamp(1.5rem, 3.2vw, 2.1rem); }
.faq details { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 14px; overflow: hidden; }
.faq summary { cursor: pointer; padding: 18px 22px; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary h3 { display: inline; margin: 0; font-size: 1.08rem; color: var(--green-dark); }
.faq summary::before { content: "＋"; color: var(--green); font-weight: 700; margin-right: 12px; }
.faq details[open] summary::before { content: "－"; }
.faq details p { margin: 0; padding: 0 22px 20px; color: var(--muted); }

/* footer */
.site-footer { background: var(--green-dark); color: #d7ebd8; padding: 44px 0 28px; text-align: center; }
.footer-brand { font-size: 1.3rem; color: #fff; margin: 0 0 10px; }
.footer-text { max-width: 620px; margin: 0 auto 20px; opacity: 0.85; }
.copyright { font-size: 0.85rem; opacity: 0.7; margin: 0; border-top: 1px solid rgba(255,255,255,0.15); padding-top: 18px; }

/* responsive */
@media (max-width: 860px) {
  .praga-grid { grid-template-columns: repeat(3, 1fr); }
  .tipos-list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .nav-toggle { display: inline-flex; }
  .header-inner { position: relative; }
  .main-navigation { position: absolute; top: 100%; left: 0; right: 0; background: var(--green); display: none; }
  .main-navigation.is-open { display: block; }
  .primary-nav { flex-direction: column; gap: 0; padding: 6px; }
  .praga-grid { grid-template-columns: repeat(2, 1fr); }
  .tipos-list { grid-template-columns: 1fr; }
}