/* =====================================================
   DS EDIKO GROUP — стилі сайту
   ===================================================== */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
section[id], #top { scroll-margin-top: 84px; }
body, h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul { padding: 0; list-style: none; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
input, select, textarea, button { font: inherit; color: inherit; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

/* ---------- Design tokens ---------- */
:root {
  --bg: #08090a;
  --bg-alt: #0d100d;
  --bg-card: #14171310;
  --card: rgba(255,255,255,0.04);
  --card-border: rgba(255,255,255,0.10);
  --green: #71de12;
  --green-soft: #9df34e;
  --green-dark: #4f9d0c;
  --green-glow: rgba(113,222,18,0.35);
  --white: #f6f8f5;
  --muted: #b7c0b6;
  --muted-2: #838d82;
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 28px;
  --container: 1180px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --shadow: 0 20px 60px -20px rgba(0,0,0,0.6);
}

body {
  background: var(--bg);
  color: var(--white);
  font-family: var(--font);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.accent { color: var(--green); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--green);
  color: #05230a;
  padding: 12px 20px;
  z-index: 1000;
  font-weight: 700;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.98rem;
  border: 2px solid transparent;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--green);
  color: #06210a;
  box-shadow: 0 10px 30px -8px var(--green-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -8px var(--green-glow); }
.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.25);
}
.btn-ghost:hover { border-color: var(--green); color: var(--green); }
.btn-block { width: 100%; }

.arrow-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 2px solid var(--green);
  color: var(--green);
  font-size: 0.9rem;
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 500;
  background: rgba(8,9,10,0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 74px;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: 0.02em; }
.logo-ds {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border: 2px solid var(--green);
  border-radius: 10px;
  color: var(--green);
  font-size: 1.05rem;
}
.logo-text { font-size: 1.05rem; text-transform: uppercase; }
.logo-text em { font-style: normal; color: var(--green); margin-left: 4px; }

.main-nav ul { display: flex; align-items: center; gap: 30px; }
.main-nav a { font-size: 0.95rem; color: var(--muted); font-weight: 600; transition: color .15s ease; }
.main-nav a:hover { color: var(--green); }
.main-nav .nav-cta {
  color: var(--bg);
  background: var(--green);
  padding: 9px 18px;
  border-radius: 999px;
}
.main-nav .nav-cta:hover { color: var(--bg); background: var(--green-soft); }

.header-actions { display: flex; align-items: center; gap: 18px; }
.header-phone { font-weight: 700; font-size: 0.95rem; color: var(--white); }
.header-phone:hover { color: var(--green); }

.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 8px;
}
.burger span {
  display: block;
  width: 18px; height: 2px;
  background: var(--white);
  margin-inline: auto;
  transition: transform .25s ease, opacity .25s ease;
}
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-top: calc(74px + 70px);
  padding-bottom: 90px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-position: center 30%;
  background-size: cover;
  filter: blur(2px) brightness(0.55) saturate(1.05);
  transform: scale(1.06);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 50% at 20% 15%, rgba(113,222,18,0.16), transparent 60%),
    linear-gradient(180deg, rgba(6,7,7,0.55) 0%, rgba(6,7,7,0.86) 55%, var(--bg) 100%);
}
.hero-content { position: relative; z-index: 2; }

.eyebrow {
  display: inline-block;
  color: var(--green);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5.6vw, 3.9rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.01em;
  max-width: 16ch;
}
.hero-sub {
  margin-top: 18px;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--muted);
  max-width: 46ch;
  font-weight: 500;
}

.hero-grid {
  margin-top: 46px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 30px;
  backdrop-filter: blur(6px);
}
.hero-col h2 { font-size: 1.02rem; font-weight: 700; margin-bottom: 16px; }

.check-list li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 10px;
  font-size: 0.97rem;
  color: var(--white);
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 2px;
  width: 20px; height: 20px;
  border: 2px solid var(--green);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2371de12' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 11px;
}

.hero-cta {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-tagline {
  margin-top: 40px;
  color: var(--muted-2);
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

/* ---------- Sections ---------- */
.section { position: relative; padding: 96px 0; }
.section-dark { background: var(--bg-alt); }

.section-title {
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.01em;
  max-width: 22ch;
}
.section-lead {
  margin-top: 16px;
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 60ch;
}

/* section with background media */
.section-media { color: var(--white); overflow: hidden; }
.media-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.media-bg img { width: 100%; height: 100%; object-fit: cover; filter: brightness(0.5) saturate(1.05); }
.media-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--bg) 0%, rgba(8,9,10,0.55) 18%, rgba(8,9,10,0.72) 60%, var(--bg) 100%);
  z-index: 0;
}
.media-overlay-strong { background: linear-gradient(180deg, var(--bg) 0%, rgba(8,9,10,0.78) 20%, rgba(8,9,10,0.88) 70%, var(--bg) 100%); }
.section-media .container { position: relative; z-index: 1; }

/* two-col generic */
.two-col {
  margin-top: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.col-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(6px);
}
.col-card h3 { font-size: 1.2rem; font-weight: 800; margin-bottom: 16px; }
.col-card .tag-line { color: var(--green); font-weight: 700; margin-top: 14px; margin-bottom: 4px; font-size: 0.92rem; text-transform: uppercase; letter-spacing: 0.03em; }
.col-card p { color: var(--muted); }
.col-card p strong { color: var(--white); }

.callout {
  margin-top: 28px;
  background: linear-gradient(135deg, rgba(113,222,18,0.12), rgba(113,222,18,0.03));
  border: 1px solid rgba(113,222,18,0.3);
  border-radius: var(--radius);
  padding: 26px 28px;
}
.callout h4 { color: var(--green); font-size: 1.05rem; font-weight: 800; margin-bottom: 14px; }
.callout-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.callout p { color: var(--white); font-size: 0.96rem; }

/* Ecosystem grid */
.eco-grid {
  margin-top: 42px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.eco-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.eco-card:hover { transform: translateY(-4px); border-color: rgba(113,222,18,0.45); background: rgba(113,222,18,0.05); }
.eco-icon {
  font-size: 1.6rem;
  width: 54px; height: 54px;
  display: flex; align-items: center; justify-content: center;
  border: 1.5px solid rgba(113,222,18,0.5);
  border-radius: 50%;
  margin-bottom: 18px;
}
.eco-card h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 10px; }
.eco-card p { color: var(--muted); font-size: 0.93rem; }
.eco-footnote { margin-top: 36px; text-align: center; color: var(--muted); max-width: 70ch; margin-inline: auto; font-size: 0.98rem; }

/* Split layout (image + text) */
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.split-reverse .split-grid { direction: rtl; }
.split-reverse .split-grid > * { direction: ltr; }
.split-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.split-text .section-title { margin-top: 6px; margin-bottom: 26px; }

.feature-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  font-size: 1rem;
}
.feature-list li:last-child { border-bottom: none; }
.feature-ico {
  flex: none;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  border: 1.5px solid rgba(113,222,18,0.5);
  font-size: 1rem;
}

.pill-banner {
  margin-top: 28px;
  display: inline-block;
  background: var(--green);
  color: #06210a;
  font-weight: 800;
  padding: 16px 26px;
  border-radius: 999px;
  font-size: 1rem;
}

/* BESS */
.bess-grid {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.bess-card {
  background: var(--card);
  border: 1.5px solid rgba(113,222,18,0.35);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: flex;
  flex-direction: column;
}
.bess-card img {
  border-radius: var(--radius);
  height: 190px;
  width: 100%;
  object-fit: cover;
  margin-bottom: 20px;
}
.bess-card h3 { font-size: 1.1rem; font-weight: 800; margin-bottom: 6px; }
.bess-model { color: var(--green); font-weight: 700; font-size: 0.92rem; margin-bottom: 10px; }
.bess-note { color: var(--muted); font-size: 0.87rem; margin-bottom: 12px; }
.dash-list li { position: relative; padding-left: 18px; margin-bottom: 8px; color: var(--muted); font-size: 0.92rem; }
.dash-list li::before { content: "—"; position: absolute; left: 0; color: var(--green); }
.bess-highlight { margin-top: auto; padding-top: 16px; color: var(--green); font-weight: 700; font-size: 0.92rem; }

.bess-features {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 30px;
  justify-content: center;
  font-weight: 700;
  color: var(--white);
  border-top: 1px solid rgba(255,255,255,0.08);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: 22px 0;
}
.bess-scale { margin-top: 26px; text-align: center; color: var(--muted); max-width: 76ch; margin-inline: auto; }

.badge-row {
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.badge {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.87rem;
  font-weight: 600;
}

/* Stats / Why us */
.stats-grid {
  margin-top: 42px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.stat-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(113,222,18,0.3);
  border-radius: var(--radius);
  padding: 26px 20px;
  text-align: center;
}
.stat-card-wide { grid-column: span 2; }
.stat-num { display: block; font-size: 1.8rem; font-weight: 800; color: var(--green); margin-bottom: 8px; }
.stat-label { color: var(--muted); font-size: 0.88rem; }

.process {
  margin-top: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}
.process-step span {
  display: inline-block;
  background: var(--green);
  color: #06210a;
  font-weight: 700;
  padding: 12px 20px;
  border-radius: 999px;
  font-size: 0.9rem;
  white-space: nowrap;
}
.process-arrow { color: var(--green); font-weight: 700; }

/* Structure */
.structure-grid {
  margin-top: 42px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.structure-card {
  background: var(--card);
  border: 1.5px solid rgba(113,222,18,0.3);
  border-radius: var(--radius-lg);
  padding: 26px 22px;
}
.structure-card h3 { font-size: 1.05rem; font-weight: 800; margin-bottom: 18px; }

/* ---------- Contact ---------- */
.section-contact { background: var(--bg-alt); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 56px;
  align-items: start;
}
.contact-details { margin-top: 30px; display: flex; flex-direction: column; gap: 14px; }
.contact-details li { display: flex; align-items: center; gap: 12px; font-size: 1.02rem; font-weight: 600; }
.contact-details a:hover { color: var(--green); }
.contact-ico { font-size: 1.1rem; }
.contact-brands { margin-top: 34px; color: var(--muted-2); font-size: 0.9rem; }

.contact-form {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 34px;
}
.form-row { margin-bottom: 20px; }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 0; }
.form-row-2 > div { margin-bottom: 20px; }
.form-row label { display: block; font-size: 0.9rem; font-weight: 700; margin-bottom: 8px; color: var(--muted); }
.req { color: var(--green); }

.form-row input[type="text"],
.form-row input[type="email"],
.form-row input[type="tel"],
.form-row select,
.form-row textarea {
  width: 100%;
  background: rgba(255,255,255,0.03);
  border: 1.5px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  color: var(--white);
  transition: border-color .15s ease, background .15s ease;
}
.form-row input::placeholder, .form-row textarea::placeholder { color: var(--muted-2); }
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  border-color: var(--green);
  background: rgba(113,222,18,0.05);
  outline: none;
}
.form-row select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23b7c0b6' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 18px;
}
.form-row textarea { resize: vertical; min-height: 120px; }

.form-row-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  flex-wrap: wrap;
}
.form-row-checkbox input { margin-top: 4px; accent-color: var(--green); width: 17px; height: 17px; flex: none; }
.form-row-checkbox label { flex: 1; min-width: 200px; font-size: 0.87rem; color: var(--muted); font-weight: 500; }
.form-row-checkbox label a { color: var(--green); text-decoration: underline; }

.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form-error {
  display: block;
  color: #ff6b6b;
  font-size: 0.8rem;
  margin-top: 6px;
  min-height: 1em;
}

.btn-spinner {
  width: 16px; height: 16px;
  border: 2px solid rgba(6,33,10,0.3);
  border-top-color: #06210a;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.form-status {
  margin-top: 16px;
  font-size: 0.92rem;
  font-weight: 600;
  min-height: 1.2em;
}
.form-status.success { color: var(--green); }
.form-status.error { color: #ff6b6b; }

/* ---------- Modal ---------- */
.modal { position: fixed; inset: 0; z-index: 900; display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(4px); }
.modal-panel {
  position: relative;
  z-index: 1;
  max-width: 560px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  background: #101310;
  border: 1px solid rgba(113,222,18,0.3);
  border-radius: var(--radius-lg);
  padding: 34px;
}
.modal-panel h2 { font-size: 1.3rem; margin-bottom: 18px; }
.modal-body p { color: var(--muted); margin-bottom: 14px; font-size: 0.95rem; }
.modal-body a { color: var(--green); text-decoration: underline; }
.modal-close {
  position: absolute;
  top: 18px; right: 18px;
  background: rgba(255,255,255,0.06);
  border: none;
  width: 34px; height: 34px;
  border-radius: 50%;
  color: var(--white);
  font-size: 1rem;
}

/* ---------- Footer ---------- */
.site-footer { background: #060706; border-top: 1px solid rgba(255,255,255,0.06); padding-top: 56px; }
.footer-inner {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand p { margin-top: 14px; color: var(--muted-2); font-size: 0.88rem; max-width: 34ch; }
.footer-nav { display: flex; flex-direction: column; gap: 12px; }
.footer-nav a { color: var(--muted); font-size: 0.92rem; }
.footer-nav a:hover { color: var(--green); }
.footer-contact { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
.footer-contact a { color: var(--muted); font-size: 0.92rem; font-weight: 600; }
.footer-contact a:hover { color: var(--green); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 22px 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-bottom p { color: var(--muted-2); font-size: 0.82rem; }
.link-btn { background: none; border: none; color: var(--muted-2); font-size: 0.82rem; text-decoration: underline; }
.link-btn:hover { color: var(--green); }

/* ---------- Back to top ---------- */
.to-top {
  position: fixed;
  right: 22px; bottom: 22px;
  width: 46px; height: 46px;
  display: flex; align-items: center; justify-content: center;
  background: var(--green);
  color: #06210a;
  border-radius: 50%;
  font-size: 1.2rem;
  font-weight: 700;
  box-shadow: 0 10px 26px -6px rgba(0,0,0,0.5);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity .25s ease, transform .25s ease;
  z-index: 400;
}
.to-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1);
}
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* =====================================================
   Responsive
   ===================================================== */
@media (max-width: 1024px) {
  .eco-grid { grid-template-columns: repeat(2, 1fr); }
  .bess-grid { grid-template-columns: 1fr; }
  .structure-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-card-wide { grid-column: span 2; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 860px) {
  .main-nav {
    position: fixed;
    top: 74px; left: 0; right: 0;
    background: rgba(8,9,10,0.98);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    max-height: calc(100vh - 74px);
    overflow-y: auto;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s ease, transform .2s ease, visibility .2s;
  }
  .main-nav.open { opacity: 1; transform: translateY(0); visibility: visible; }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: 0; padding: 10px 24px 26px; }
  .main-nav li { border-bottom: 1px solid rgba(255,255,255,0.06); }
  .main-nav a { display: block; padding: 16px 4px; }
  .main-nav .nav-cta { display: inline-block; margin-top: 14px; text-align: center; }
  .header-phone { display: none; }
  .burger { display: flex; }

  .hero-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .callout-grid { grid-template-columns: 1fr; }
  .split-grid { grid-template-columns: 1fr; }
  .split-reverse .split-grid { direction: ltr; }
  .split-media { order: -1; }

  .footer-inner { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 640px) {
  .container { padding-inline: 18px; }
  .section { padding: 64px 0; }
  .hero { padding-top: calc(74px + 40px); padding-bottom: 60px; }
  .hero-grid { padding: 22px; gap: 24px; }
  .eco-grid { grid-template-columns: 1fr; }
  .structure-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-card-wide { grid-column: span 2; }
  .form-row-2 { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }
  .process { flex-direction: column; }
  .process-arrow { transform: rotate(90deg); }
  .contact-form { padding: 22px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}