/* ===================== Variables ===================== */
:root {
  --accent: #EA580C;
  --accent-dark: #C2410C;
  --accent-text: #ffffff;
  --accent-ink: #1c1f24;
  --header-bg: #1b1d21;
  --footer-bg: #292929;
  --muted-bg: #efefef;
  --line: #e2e2e2;
  --text: #1c1f24;
  --text-muted: #6b7076;
  --container: 1180px;
  --font-sans: 'Manrope', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-serif: 'Lora', Georgia, 'Times New Roman', serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background: #fff;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { margin: 0; font-family: var(--font-serif); font-weight: 700; letter-spacing: -0.005em; line-height: 1.2; color: var(--text); }
p { margin: 0; }
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===================== Buttons ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 999px;
  padding: 15px 30px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-accent { background: var(--accent); color: var(--accent-text); }
.btn-accent:hover { background: var(--accent-dark); }
.btn-sm { padding: 11px 22px; font-size: 0.72rem; }
.btn-lg { padding: 17px 34px; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* ===================== Header ===================== */
.site-header {
  position: sticky;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--header-bg);
  padding: 20px 0;
}
.header-inner { display: flex; align-items: center; gap: 40px; }
.logo { display: flex; align-items: center; gap: 9px; font-family: var(--font-serif); font-weight: 700; font-size: 1.1rem; color: #fff; flex-shrink: 0; }
.main-nav { display: flex; gap: 24px; margin-right: auto; }
.main-nav a { color: #c9cbce; font-size: 0.85rem; font-weight: 500; transition: color 0.2s ease; }
.main-nav a:hover { color: var(--accent); }
.header-contact { display: flex; align-items: center; gap: 22px; }
.contact-chip { display: flex; align-items: center; gap: 7px; color: #e6e7e5; font-weight: 600; font-size: 0.82rem; }
.contact-chip svg { color: var(--accent); flex-shrink: 0; }
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px; height: 36px;
  background: none; border: none; cursor: pointer;
  margin-left: auto;
}
.burger span { display: block; width: 22px; height: 2px; background: #fff; transition: transform 0.25s ease, opacity 0.25s ease; }
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===================== Hero ===================== */
.hero {
  position: relative;
  min-height: clamp(560px, 88vh, 860px);
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #fff;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(8,9,10,0.92) 0%, rgba(8,9,10,0.8) 48%, rgba(8,9,10,0.6) 80%, rgba(8,9,10,0.52) 100%);
}
.hero-content { position: relative; z-index: 1; padding: 70px 24px; }
.hero h1 {
  font-family: var(--font-sans);
  font-weight: 800;
  text-transform: uppercase;
  font-size: clamp(1.9rem, 4.6vw, 3.1rem);
  line-height: 1.25;
  margin-bottom: 34px;
  max-width: 880px;
  color: #fff;
  text-shadow: 0 2px 24px rgba(0,0,0,0.9);
}
.hero h1 .accent { color: var(--accent); }
.hero .social-row { margin-top: 40px; }

/* ===================== Banner slider ===================== */
.banner-slider { position: relative; overflow: hidden; background: #fff; }
.slider-track { display: flex; transition: transform 0.5s ease; }
.slide { min-width: 100%; }

.slide-media img { width: 100%; height: 100%; object-fit: cover; }

.slide-split { display: grid; grid-template-columns: 1fr 1fr; align-items: stretch; height: clamp(320px, 40vw, 420px); }
.slide-split .slide-text { background: var(--accent); color: var(--accent-text); display: flex; flex-direction: column; justify-content: center; gap: 16px; padding: 50px 60px; overflow: hidden; }
.slide-split .slide-text h3 { font-size: clamp(1.3rem, 2.6vw, 1.8rem); }
.slide-split .slide-text p { font-size: 0.98rem; }
.slide-split .slide-media { height: 100%; overflow: hidden; }
.slide-split .btn-dark { align-self: flex-start; }

.btn-dark { background: var(--accent-ink); color: #fff; }
.btn-dark:hover { background: #000; }

.slider-dots { display: flex; justify-content: center; gap: 10px; padding: 20px 0; background: #fff; }
.slider-dots button {
  width: 30px; height: 30px; border-radius: 50%; border: 1.5px solid var(--line);
  background: #fff; color: var(--text-muted); font-weight: 700; font-size: 0.8rem; cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.slider-dots button.active { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }

/* ===================== Sections ===================== */
.section { padding: 90px 0; }
.section-muted { background: var(--muted-bg); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.15rem); }
.center-heading { text-align: center; max-width: 720px; margin: 0 auto 50px; }
.lead { font-size: 1.02rem; color: var(--text-muted); }
.label { font-weight: 700; margin-bottom: 10px; }

.rule-heading { display: flex; align-items: baseline; gap: 28px; margin-bottom: 50px; }
.rule-heading i { flex: 1; height: 1px; background: var(--line); font-style: normal; }

.dot-list li { position: relative; padding-left: 18px; font-size: 0.95rem; margin-bottom: 9px; color: var(--text-muted); }
.dot-list li::before {
  content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
}

/* ===================== About ===================== */
.about-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; }
.about-text h2 { margin-bottom: 22px; }
.about-stats { display: flex; flex-direction: column; justify-content: center; gap: 34px; }
.about-stats p { font-family: var(--font-serif); font-weight: 700; font-size: 1.05rem; }

/* ===================== Tier strip ===================== */
.tier-strip { background: var(--muted-bg); padding: 56px 0; }
.tier-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
.tier-grid p { font-size: 0.92rem; color: var(--text-muted); }

/* ===================== Feature strip (photo bg) ===================== */
.feature-strip { position: relative; color: #fff; overflow: hidden; }
.feature-bg { position: absolute; inset: 0; z-index: 0; }
.feature-bg img { width: 100%; height: 100%; object-fit: cover; }
.feature-overlay { position: absolute; inset: 0; background: rgba(15, 16, 18, 0.68); }
.feature-grid { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(4, 1fr); gap: 34px; padding: 80px 24px; text-align: center; }
.feature-item { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.feature-item svg { width: 42px; height: 42px; color: var(--accent); }
.feature-item p { font-family: var(--font-serif); font-weight: 700; font-size: 0.98rem; line-height: 1.4; }

/* ===================== Services process (photo bg) ===================== */
.services-process { position: relative; color: #fff; overflow: hidden; }
.services-bg { position: absolute; inset: 0; z-index: 0; }
.services-bg img { width: 100%; height: 100%; object-fit: cover; }
.services-overlay { position: absolute; inset: 0; background: rgba(10, 11, 12, 0.72); }
.services-content { position: relative; z-index: 1; padding: 90px 24px; }
.services-content h2 { color: #fff; margin-bottom: 20px; }
.services-content .lead { color: #d8dade; max-width: 560px; margin-bottom: 50px; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px 40px; max-width: 900px; }
.service-step { display: flex; align-items: center; gap: 16px; }
.step-num {
  flex-shrink: 0; width: 56px; height: 56px; border-radius: 50%; border: 2px solid var(--accent);
  color: var(--accent); font-family: var(--font-serif); font-weight: 700; font-size: 1.3rem;
  display: flex; align-items: center; justify-content: center;
}
.step-label { font-weight: 600; font-size: 1rem; }

/* ===================== Cards grids ===================== */
.cards-grid { display: grid; gap: 26px; }
.cards-grid-3 { grid-template-columns: repeat(3, 1fr); }
.cards-grid-5 { grid-template-columns: repeat(5, 1fr); }

.station-card {
  background: #fff; border: 1px solid var(--line); border-top: 3px solid var(--accent);
  border-radius: 6px; padding: 32px 26px; display: flex; flex-direction: column; gap: 18px;
}
.station-card h3 { font-size: 1.15rem; }
.station-card .dot-list { flex: 1; }

.equip-item { text-align: left; display: flex; flex-direction: column; align-items: flex-start; height: 100%; }
.equip-item h3 { font-size: 1.05rem; margin-bottom: 10px; }
.equip-item p { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 20px; line-height: 1.5; }
.equip-item .btn { margin-top: auto; }

/* ===================== Financing ===================== */
.financing-grid { display: grid; grid-template-columns: 1fr auto 1fr; gap: 50px; }
.finance-divider { width: 1px; background: var(--line); }
.finance-col h3 { font-size: 1.35rem; margin-bottom: 16px; }
.finance-col > p:not(.label) { color: var(--text-muted); margin-bottom: 20px; }
.finance-col .dot-list { margin-bottom: 30px; }

/* ===================== Projects ===================== */
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.project-media { aspect-ratio: 4/3; overflow: hidden; border-radius: 6px; margin-bottom: 20px; }
.project-media img { width: 100%; height: 100%; object-fit: cover; }
.project-card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.project-note { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 10px; }

/* ===================== Contact ===================== */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 70px; }
.contact-info .lead { margin-bottom: 26px; }
.contact-line { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1rem; margin-top: 14px; }
.contact-line svg { color: var(--accent); flex-shrink: 0; }

.contact-form { display: flex; flex-direction: column; gap: 16px; }
.contact-form input[type="text"],
.contact-form input[type="tel"],
.contact-form select,
.contact-form textarea {
  border: none; border-bottom: 2px solid var(--line); background: #f8f8f8; border-radius: 4px 4px 0 0;
  padding: 14px 16px; font-family: var(--font-sans); font-size: 0.92rem; color: var(--text); width: 100%;
  transition: border-color 0.2s ease;
}
.contact-form textarea { resize: vertical; font-family: var(--font-sans); }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: none; border-color: var(--accent); }
.radio-row { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; }
.radio-label { font-size: 0.85rem; color: var(--text-muted); font-weight: 600; width: 100%; }
.radio { display: flex; align-items: center; gap: 8px; cursor: pointer; font-size: 0.9rem; }
.radio input { accent-color: var(--accent); width: 16px; height: 16px; }
.form-note { margin-top: 4px; font-weight: 700; color: var(--accent-dark); }

/* ===================== Footer ===================== */
.site-footer { background: var(--footer-bg); color: #b9bcc0; padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 40px; padding-bottom: 44px; }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 0.9rem; line-height: 1.6; max-width: 300px; }
.footer-col h4 { font-family: var(--font-serif); color: #fff; font-size: 1rem; margin-bottom: 18px; }
.footer-col a { display: block; margin-bottom: 11px; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.03em; transition: color 0.2s ease; }
.footer-col a:hover { color: var(--accent); }
.footer-col .social-row { margin-top: 18px; gap: 8px; }
.footer-col .social-row a { width: 30px; height: 30px; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding: 22px 0; font-size: 0.8rem; border-top: 1px solid rgba(255,255,255,0.08);
}

/* ===================== Shared ===================== */
.social-row { display: flex; gap: 10px; flex-wrap: wrap; }
.social-row a {
  width: 34px; height: 34px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent); color: var(--accent-text);
  transition: transform 0.2s ease, background 0.2s ease;
}
.social-row a:hover { transform: translateY(-2px); background: var(--accent-dark); }
.site-footer .social-row a { background: rgba(255,255,255,0.08); color: #fff; }
.site-footer .social-row a:hover { background: var(--accent); color: var(--accent-text); }

/* ===================== Responsive ===================== */
@media (max-width: 980px) {
  .slide-split { grid-template-columns: 1fr; height: auto; }
  .slide-split .slide-text { padding: 36px 24px; }
  .slide-split .slide-media { height: 240px; }
  .main-nav { display: none; }
  .header-contact { display: none; }
  .burger { display: flex; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .cards-grid-3 { grid-template-columns: 1fr; }
  .cards-grid-5 { grid-template-columns: repeat(2, 1fr); }
  .tier-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .financing-grid { grid-template-columns: 1fr; }
  .finance-divider { display: none; }
  .projects-grid { grid-template-columns: 1fr; gap: 44px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: span 2; }

  .site-header .container.header-inner { flex-wrap: wrap; }
  .main-nav.open {
    display: flex; flex-direction: column; width: 100%;
    background: #22252b; padding: 18px; border-radius: 8px; margin-top: 14px; gap: 2px;
  }
  .main-nav.open a { padding: 12px 6px; border-bottom: 1px solid rgba(255,255,255,0.06); }
}

@media (max-width: 620px) {
  .section { padding: 64px 0; }
  .cards-grid-5 { grid-template-columns: 1fr; }
  .tier-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; padding: 60px 24px; }
  .services-grid { grid-template-columns: 1fr; }
  .services-content { padding: 64px 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: span 1; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}