:root {
  --green: #2d8a3e;
  --green-dark: #1f6b2c;
  --green-light: #e8f5eb;
  --red: #c62828;
  --red-hover: #a01f1f;
  --dark: #1a1a1a;
  --gray: #4a4a4a;
  --gray-light: #f4f5f6;
  --border: #e0e0e0;
  --white: #ffffff;
  --shadow: 0 4px 20px rgba(0,0,0,.08);
  --radius: 12px;
  --max: 1100px;
  --font: "Segoe UI", system-ui, -apple-system, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
  font-size: 16px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--green); text-decoration: none; }
a:hover { color: var(--green-dark); }
.container { width: min(100% - 2rem, var(--max)); margin-inline: auto; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: .75rem 0; gap: 1rem;
}
.logo-link { display: flex; align-items: center; gap: .6rem; }
.logo-link img { height: 42px; width: auto; }
.logo-text { font-weight: 700; color: var(--dark); font-size: .95rem; line-height: 1.2; }
.logo-text span { display: block; font-weight: 500; font-size: .72rem; color: var(--gray); }
.nav { display: none; gap: 1.25rem; align-items: center; }
.nav a { color: var(--gray); font-weight: 500; font-size: .92rem; }
.nav a:hover { color: var(--green); }
.nav-cta {
  background: var(--green) !important; color: var(--white) !important;
  padding: .45rem 1rem; border-radius: 999px; font-size: .85rem !important;
}
.nav-cta:hover { background: var(--green-dark) !important; }
.menu-btn {
  background: none; border: 1px solid var(--border); border-radius: 8px;
  padding: .4rem .7rem; font-size: 1.2rem; cursor: pointer; color: var(--dark);
}
.nav.open {
  display: flex; flex-direction: column; position: absolute;
  top: 100%; left: 0; right: 0; background: var(--white);
  padding: 1rem; border-bottom: 1px solid var(--border); box-shadow: var(--shadow);
}
@media (min-width: 800px) {
  .menu-btn { display: none; }
  .nav { display: flex; }
  .logo-link img { height: 48px; }
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--green-light) 0%, #fff 55%, #fceeee 100%);
  padding: 3rem 0 3.5rem; position: relative; overflow: hidden;
}
.hero-grid {
  display: grid; gap: 2rem; align-items: center;
}
@media (min-width: 860px) {
  .hero-grid { grid-template-columns: 1.1fr .9fr; }
}
.badge {
  display: inline-block; background: var(--green); color: #fff;
  font-size: .75rem; font-weight: 600; letter-spacing: .04em;
  padding: .3rem .75rem; border-radius: 999px; margin-bottom: 1rem;
}
.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.6rem);
  line-height: 1.25; margin-bottom: .75rem; color: var(--dark);
}
.hero h1 .cn { display: block; font-size: .55em; font-weight: 600; color: var(--gray); margin-top: .35rem; }
.hero-lead { color: var(--gray); font-size: 1.05rem; margin-bottom: 1.5rem; max-width: 36rem; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: .75rem; margin-bottom: 1.25rem; }
.btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .7rem 1.25rem; border-radius: 999px; font-weight: 600;
  font-size: .95rem; border: 2px solid transparent; cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dark); color: #fff; }
.btn-whatsapp { background: #25D366; color: #fff; }
.btn-whatsapp:hover { background: #1da851; color: #fff; }
.btn-outline { background: transparent; border-color: var(--green); color: var(--green); }
.btn-outline:hover { background: var(--green); color: #fff; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 1rem 1.5rem; font-size: .88rem; color: var(--gray); }
.hero-meta strong { color: var(--dark); }
.hero-visual {
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
  border: 1px solid var(--border); background: #fff;
}
.hero-visual img { width: 100%; aspect-ratio: 4/3; object-fit: cover; object-position: top; }

/* Sections */
section { padding: 3.5rem 0; }
.section-head { margin-bottom: 2rem; max-width: 40rem; }
.section-head .eyebrow {
  color: var(--red); font-weight: 700; font-size: .8rem;
  letter-spacing: .06em; text-transform: uppercase; margin-bottom: .4rem;
}
.section-head h2 {
  font-size: clamp(1.4rem, 3vw, 1.9rem); margin-bottom: .5rem;
}
.section-head h2 .cn { font-weight: 500; color: var(--gray); font-size: .7em; }
.section-head p { color: var(--gray); }

.about { background: var(--gray-light); }
.about-grid {
  display: grid; gap: 1.5rem;
}
@media (min-width: 700px) {
  .about-grid { grid-template-columns: 1fr 1fr; }
}
.about-card {
  background: #fff; border-radius: var(--radius); padding: 1.5rem;
  border: 1px solid var(--border); box-shadow: var(--shadow);
}
.about-card h3 { font-size: 1.05rem; margin-bottom: .6rem; color: var(--green-dark); }
.about-card p, .about-card li { color: var(--gray); font-size: .95rem; }
.about-card ul { padding-left: 1.1rem; }
.about-card li { margin-bottom: .35rem; }

/* Product grids */
.product-block { margin-bottom: 3rem; }
.product-block:last-child { margin-bottom: 0; }
.product-banner {
  display: grid; gap: 1.25rem; margin-bottom: 1.5rem;
  background: var(--gray-light); border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--border);
}
@media (min-width: 720px) {
  .product-banner { grid-template-columns: 1.2fr 1fr; align-items: stretch; }
}
.product-banner img {
  width: 100%; height: 100%; min-height: 200px;
  object-fit: cover; object-position: top;
}
.product-banner-body { padding: 1.25rem 1.5rem; display: flex; flex-direction: column; justify-content: center; }
.product-banner-body h3 { font-size: 1.25rem; margin-bottom: .4rem; }
.product-banner-body h3 .cn { color: var(--gray); font-weight: 500; font-size: .85em; }
.product-banner-body p { color: var(--gray); font-size: .92rem; }

.cards {
  display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}
.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); display: flex; flex-direction: column;
  transition: transform .15s, box-shadow .15s;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(0,0,0,.12); }
.card-img { background: #fafafa; aspect-ratio: 4/3; overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.card-body { padding: 1rem 1.1rem 1.2rem; flex: 1; display: flex; flex-direction: column; }
.card-body h4 { font-size: 1.05rem; margin-bottom: .35rem; }
.card-body .model-tag {
  display: inline-block; background: var(--green-light); color: var(--green-dark);
  font-size: .75rem; font-weight: 700; padding: .15rem .5rem; border-radius: 4px;
  margin-bottom: .5rem;
}
.specs { list-style: none; font-size: .85rem; color: var(--gray); margin-top: auto; }
.specs li {
  display: flex; justify-content: space-between; gap: .5rem;
  padding: .3rem 0; border-bottom: 1px dashed var(--border);
}
.specs li:last-child { border-bottom: none; }
.specs strong { color: var(--dark); font-weight: 600; }

.drone-grid {
  display: grid; gap: .75rem;
  grid-template-columns: repeat(2, 1fr);
}
@media (min-width: 700px) {
  .drone-grid { grid-template-columns: repeat(4, 1fr); }
}
.drone-grid figure {
  border-radius: 10px; overflow: hidden; border: 1px solid var(--border);
  background: #111; aspect-ratio: 16/10;
}
.drone-grid img { width: 100%; height: 100%; object-fit: cover; }

/* Trust */
.trust { background: var(--dark); color: #fff; }
.trust .section-head .eyebrow { color: #ff8a80; }
.trust .section-head h2 { color: #fff; }
.trust .section-head h2 .cn, .trust .section-head p { color: #bdbdbd; }
.trust-grid {
  display: grid; gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}
.trust-item {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius); padding: 1.25rem;
}
.trust-item .num {
  font-size: 1.6rem; font-weight: 800; color: #81c784; margin-bottom: .25rem;
}
.trust-item h3 { font-size: .95rem; margin-bottom: .3rem; }
.trust-item p { font-size: .85rem; color: #bdbdbd; }

/* Contact */
.contact-box {
  display: grid; gap: 1.5rem;
  background: var(--gray-light); border-radius: var(--radius);
  padding: 1.75rem; border: 1px solid var(--border);
}
@media (min-width: 720px) {
  .contact-box { grid-template-columns: 1.2fr .8fr; }
}
.contact-list { list-style: none; }
.contact-list li {
  padding: .7rem 0; border-bottom: 1px solid var(--border);
  font-size: .95rem;
}
.contact-list li:last-child { border-bottom: none; }
.contact-list .label {
  display: block; font-size: .75rem; font-weight: 700;
  color: var(--green); text-transform: uppercase; letter-spacing: .04em;
  margin-bottom: .15rem;
}
.contact-actions { display: flex; flex-direction: column; gap: .75rem; justify-content: center; }
.contact-actions .btn { justify-content: center; }

/* Footer */
.site-footer {
  background: #111; color: #9e9e9e; padding: 2rem 0 1.5rem; font-size: .85rem;
}
.footer-inner {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between;
  align-items: flex-start;
}
.site-footer strong { color: #eee; }
.site-footer a { color: #81c784; }
.footer-note { margin-top: 1.25rem; padding-top: 1rem; border-top: 1px solid #333; font-size: .78rem; }

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