:root {
  --ink: #17221f;
  --muted: #5e6b66;
  --line: #dfe7df;
  --paper: #fbfcf8;
  --soft: #eef5ed;
  --green: #0f5f43;
  --green-2: #1e8b61;
  --lime: #d8ef5d;
  --gold: #e7b85a;
  --blue: #316a8d;
  --shadow: 0 18px 55px rgba(25, 52, 42, .14);
  --radius: 8px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background: var(--paper);
  line-height: 1.65;
}

img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.section { padding: 96px 0; }
.light { background: linear-gradient(180deg, #f3f8f0 0%, #fffdf7 100%); }
.section-dark { color: #fff; background: #10251d; }

.site-header {
  position: fixed;
  top: 18px;
  left: 50%;
  z-index: 50;
  transform: translateX(-50%);
  width: min(1180px, calc(100% - 32px));
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  border: 1px solid rgba(255,255,255,.24);
  background: rgba(10, 40, 30, .48);
  color: #fff;
  backdrop-filter: blur(18px);
  box-shadow: 0 14px 38px rgba(0,0,0,.16);
  transition: background .25s ease, color .25s ease, top .25s ease, border-color .25s ease;
}
.site-header.scrolled {
  top: 0;
  width: 100%;
  border-color: rgba(15, 95, 67, .12);
  background: rgba(255,255,250,.96);
  color: var(--ink);
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 210px; }
.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--lime);
  color: var(--green);
  font-weight: 900;
  font-size: 24px;
}
.brand strong { display: block; letter-spacing: .08em; line-height: 1; }
.brand small { display: block; margin-top: 4px; color: currentColor; opacity: .76; font-size: 12px; }
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a { padding: 10px 13px; font-size: 14px; font-weight: 700; opacity: .86; }
.site-nav a:hover { opacity: 1; }
.nav-cta { border-radius: 999px; background: var(--lime); color: var(--green); }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: currentColor; margin: 5px 0; }

.hero {
  min-height: 92vh;
  position: relative;
  overflow: hidden;
  display: grid;
  align-items: center;
  padding: 130px 0 78px;
}
.hero-media, .hero-media video, .hero-overlay { position: absolute; inset: 0; }
.hero-media video { width: 100%; height: 100%; object-fit: cover; }
.hero-overlay {
  background:
    linear-gradient(90deg, rgba(9,35,27,.93) 0%, rgba(9,35,27,.68) 46%, rgba(9,35,27,.32) 100%),
    linear-gradient(0deg, rgba(9,35,27,.82) 0%, transparent 34%);
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 48px;
  align-items: end;
}
.hero-copy { max-width: 790px; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--green-2);
  font-weight: 850;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: 12px;
}
.section-dark .eyebrow { color: var(--lime); }
.eyebrow::before {
  content: "";
  width: 34px;
  height: 2px;
  background: currentColor;
}
h1, h2, h3 { margin: 0; line-height: 1.08; letter-spacing: 0; }
h1 { margin-top: 22px; font-size: clamp(44px, 6vw, 78px); max-width: 900px; }
h2 { margin-top: 14px; font-size: clamp(31px, 4vw, 52px); }
h3 { font-size: 20px; }
p { margin: 16px 0 0; color: var(--muted); }
.section-dark p, .hero-panel p { color: rgba(255,255,255,.82); }
.hero-copy > p { max-width: 690px; font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 850;
  cursor: pointer;
}
.btn.primary { background: var(--lime); color: var(--green); box-shadow: 0 14px 32px rgba(216,239,93,.22); }
.btn.ghost { color: #fff; border-color: rgba(255,255,255,.34); background: rgba(255,255,255,.1); }
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 42px;
  max-width: 760px;
}
.hero-metrics div, .hero-panel {
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(255,255,255,.12);
  backdrop-filter: blur(12px);
  box-shadow: 0 18px 48px rgba(0,0,0,.16);
}
.hero-metrics div { padding: 18px; border-radius: var(--radius); }
.hero-metrics strong { display: block; color: var(--lime); font-size: 21px; line-height: 1.2; }
.hero-metrics span { display: block; margin-top: 6px; color: rgba(255,255,255,.76); font-size: 13px; }
.hero-panel { padding: 26px; border-radius: var(--radius); }
.hero-panel h2 { font-size: 25px; margin: 0; }
.hero-panel ul { margin: 20px 0 0; padding-left: 20px; color: rgba(255,255,255,.86); }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 58px; align-items: center; }
.office-card {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 20px;
  align-items: center;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}
.office-card img { height: 92px; width: 140px; object-fit: cover; border-radius: 6px; }
.office-card strong, .office-card span { display: block; }
.office-card span { margin-top: 4px; color: var(--muted); font-size: 14px; }
.image-stack { display: grid; gap: 18px; }
.image-stack img, .wide-feature img, .spec-note img { border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid rgba(15,95,67,.12); }
.image-stack img:nth-child(2) { width: 86%; margin-left: auto; margin-top: -70px; }

.section-head { max-width: 860px; margin-bottom: 42px; }
.section-head.compact { max-width: 760px; }
.section-head p { font-size: 17px; }
.principle-grid, .advantage-grid, .application-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
.principle-grid article, .advantage-grid article, .application-grid article, .model-grid article {
  padding: 24px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.82);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(25,52,42,.08);
}
.principle-grid span {
  color: var(--green-2);
  font-weight: 900;
  font-size: 13px;
}
.principle-grid h3, .advantage-grid h3, .application-grid h3 { margin-top: 12px; }
.wide-feature, .spec-note {
  margin-top: 28px;
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: 30px;
  align-items: center;
  padding: 28px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.advantage-grid, .application-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.video-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-bottom: 28px; }
figure { margin: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
figure video { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; background: #111; }
figcaption { padding: 14px 16px; font-weight: 800; color: var(--green); }
.model-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.model-grid ul { margin: 20px 0 0; padding-left: 20px; color: var(--muted); }

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}
table { width: 100%; border-collapse: collapse; min-width: 880px; }
th, td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: #163f32; color: #fff; font-size: 13px; text-transform: uppercase; letter-spacing: .06em; }
td:first-child { font-weight: 800; color: var(--ink); }
tbody tr:nth-child(even) { background: #f7faf5; }
.spec-note { grid-template-columns: 330px 1fr; }

.faq-list { display: grid; gap: 12px; }
details {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 10px 26px rgba(25,52,42,.06);
}
summary { cursor: pointer; padding: 18px 22px; font-weight: 850; }
details p { margin: 0; padding: 0 22px 20px; }

.contact { color: #fff; background: linear-gradient(135deg, #0f2d24 0%, #166145 52%, #2f718e 100%); }
.contact p { color: rgba(255,255,255,.82); }
.contact .eyebrow { color: var(--lime); }
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 46px; align-items: start; }
.contact-cards { display: grid; gap: 12px; margin-top: 28px; }
.contact-cards a, .contact-cards span {
  display: block;
  padding: 15px 17px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: var(--radius);
  background: rgba(255,255,255,.1);
}
.quote-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 24px;
  border-radius: var(--radius);
  background: rgba(255,255,255,.96);
  color: var(--ink);
  box-shadow: 0 22px 60px rgba(0,0,0,.2);
}
.quote-form label { display: grid; gap: 7px; font-weight: 800; font-size: 14px; }
.quote-form label:nth-last-of-type(1), .quote-form button, .form-note { grid-column: 1 / -1; }
input, select, textarea {
  width: 100%;
  border: 1px solid #cfd9d1;
  border-radius: var(--radius);
  padding: 12px 12px;
  color: var(--ink);
  background: #fff;
  font: inherit;
}
textarea { resize: vertical; }
.form-note { margin: 0; color: var(--muted); font-size: 13px; }

.site-footer { padding: 54px 0; background: #101915; color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.35fr repeat(3, 1fr); gap: 30px; }
.site-footer p { color: rgba(255,255,255,.68); }
.site-footer h3 { font-size: 15px; margin-bottom: 12px; }
.site-footer a { display: block; color: rgba(255,255,255,.72); margin: 8px 0; font-size: 14px; }
.site-footer a:hover { color: var(--lime); }
.whatsapp-float {
  position: fixed;
  right: 20px;
  bottom: 22px;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 132px;
  height: 52px;
  padding: 0 18px;
  border-radius: 999px;
  background: #20c463;
  color: #fff;
  font-weight: 900;
  box-shadow: 0 14px 38px rgba(32,196,99,.35);
}

#mobile_icon_div > div,
#mobile_icon_div [53kf_icon_versions] {
  width: 76px !important;
  height: 76px !important;
  left: auto !important;
  right: 22px !important;
  bottom: 88px !important;
  font-size: 14px !important;
}

@media (max-width: 980px) {
  .site-header { height: 64px; }
  .nav-toggle { display: block; color: currentColor; }
  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 74px;
    display: none;
    padding: 14px;
    border-radius: var(--radius);
    background: rgba(255,255,250,.98);
    color: var(--ink);
    box-shadow: var(--shadow);
  }
  .site-nav.open { display: grid; }
  .site-nav a { padding: 13px 12px; }
  .hero-grid, .two-col, .contact-grid, .wide-feature, .spec-note { grid-template-columns: 1fr; }
  .hero-panel { max-width: 520px; }
  .principle-grid, .advantage-grid, .application-grid, .video-grid, .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .image-stack img:nth-child(2) { width: 100%; margin-top: 0; }
}

@media (max-width: 640px) {
  .container { width: min(100% - 28px, 1180px); }
  .section { padding: 70px 0; }
  .brand { min-width: 0; }
  .brand small { display: none; }
  .hero { min-height: 860px; padding-top: 110px; }
  h1 { font-size: 42px; }
  h2 { font-size: 31px; }
  .hero-grid { gap: 26px; }
  .hero-metrics, .principle-grid, .advantage-grid, .application-grid, .video-grid, .model-grid, .footer-grid, .quote-form { grid-template-columns: 1fr; }
  .office-card { grid-template-columns: 1fr; }
  .office-card img { width: 100%; height: 160px; }
  .wide-feature, .spec-note { padding: 18px; }
  .whatsapp-float { right: 14px; bottom: 14px; min-width: 118px; }
  #mobile_icon_div [53kf_icon_versions] {
    width: 54px !important;
    height: 54px !important;
    right: 18px !important;
    bottom: 78px !important;
    font-size: 10px !important;
  }
}