:root {
  --ink: #23405c;
  --muted-ink: #5f7286;
  --line: #d7e2ea;
  --surface: #f7fbff;
  --surface-card: #f1f7fb;
  --muted: #eaf2f7;
  --accent: #e28a2e;
  --accent-dark: #c96f12;
  --deep-blue: #315b7a;
  --max: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--surface);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

button, input, textarea { font: inherit; }

.container {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(247,251,255,.96);
  border-bottom: 1px solid rgba(219,227,234,.9);
  backdrop-filter: blur(12px);
}

.nav-wrap {
  min-height: 76px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-right: auto;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  font-weight: 800;
  letter-spacing: .04em;
}

.brand strong, .brand small { display: block; }
.brand small { color: var(--muted-ink); font-size: .78rem; }

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
  font-weight: 650;
  font-size: .95rem;
}

.nav-links a:hover { color: var(--accent); }

.lang-toggle, .menu-toggle {
  border: 1px solid var(--line);
  background: var(--surface-card);
  color: var(--ink);
  border-radius: 8px;
  padding: 9px 13px;
  cursor: pointer;
  font-weight: 700;
}

.menu-toggle { display: none; }

.hero {
  position: relative;
  overflow: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 80% 20%, rgba(226,138,46,.22), transparent 32%),
    linear-gradient(120deg, #edf6fb 0%, #deedf6 58%, #cee2ee 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 42px 42px;
}

.hero-grid {
  min-height: 650px;
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.4fr .7fr;
  gap: 70px;
  align-items: center;
  padding: 90px 0;
}

.eyebrow, .section-label {
  color: var(--accent);
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .16em;
}

h1, h2, h3 { line-height: 1.15; margin-top: 0; }

h1 {
  font-size: clamp(2.7rem, 6vw, 5.4rem);
  max-width: 950px;
  margin-bottom: 26px;
  letter-spacing: -.04em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: -.03em;
  margin-bottom: 24px;
}

h3 { font-size: 1.3rem; }

.hero-text {
  max-width: 760px;
  color: #4f6478;
  font-size: 1.15rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 34px 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 8px;
  font-weight: 800;
  border: 1px solid transparent;
  cursor: pointer;
}

.button.primary {
  background: var(--accent);
  color: white;
}

.button.primary:hover { background: var(--accent-dark); }

.button.secondary {
  color: var(--ink);
  border-color: #9db5c6;
  background: rgba(247,251,255,.55);
}

.button.secondary:hover {
  background: rgba(247,251,255,.9);
  border-color: #7898ad;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: #5f7286;
  font-size: .9rem;
}

.trust-row span::before {
  content: "✓";
  color: var(--accent);
  margin-right: 8px;
}

.hero-card {
  padding: 30px;
  border: 1px solid #c8d9e4;
  background: rgba(247,251,255,.88);
  border-radius: 16px;
  box-shadow: 0 24px 70px rgba(35,64,92,.16);
}

.hero-card ul { padding-left: 20px; margin-bottom: 0; }
.hero-card li { margin: 12px 0; color: #4f6478; }

.section { padding: 100px 0; }
.section.muted { background: var(--muted); }
.section.dark { background: var(--deep-blue); color: #f3f8fb; }

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.split p:last-child { color: var(--muted-ink); font-size: 1.08rem; }

.card-grid {
  margin-top: 42px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.feature-card, .product-card {
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 28px;
}

.feature-card .number {
  display: inline-block;
  color: var(--accent);
  font-weight: 900;
  margin-bottom: 30px;
}

.feature-card p, .product-card p { color: var(--muted-ink); }

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 42px;
}

.product-visual {
  height: 210px;
  margin: -28px -28px 28px;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 65% 35%, rgba(217,119,6,.36), transparent 28%),
    linear-gradient(135deg, #4b7896, #7ea5bb);
  color: rgba(247,251,255,.92);
  font-size: 4.2rem;
  font-weight: 900;
  border-radius: 14px 14px 0 0;
}

.quality-grid {
  display: grid;
  grid-template-columns: 1.2fr .6fr;
  gap: 80px;
  align-items: center;
}

.quality-grid p { color: #5f7286; }

.quality-badge {
  min-height: 280px;
  display: grid;
  place-items: center;
  align-content: center;
  border: 1px solid rgba(238,247,252,.42);
  border-radius: 18px;
  background: rgba(238,247,252,.10);
}

.quality-badge strong { font-size: 2.6rem; }
.quality-badge span { font-size: 4.8rem; color: var(--accent); line-height: 1; }
.quality-badge small { color: #5f7286; }

.contact-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 80px;
}

.contact-note {
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.rfq-form {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px;
  background: var(--muted);
}

.rfq-form label {
  display: grid;
  gap: 7px;
  margin-bottom: 16px;
  font-weight: 700;
}

.rfq-form input, .rfq-form textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  background: #fafdff;
  padding: 12px 13px;
}

.form-message { min-height: 24px; color: var(--muted-ink); }

footer {
  border-top: 1px solid var(--line);
  padding: 26px 0;
  color: var(--muted-ink);
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

@media (max-width: 900px) {
  .menu-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 76px;
    left: 20px;
    right: 20px;
    padding: 18px;
    flex-direction: column;
    align-items: stretch;
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: 0 20px 50px rgba(15,23,42,.15);
  }
  .nav-links.open { display: flex; }
  .hero-grid, .split, .quality-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-grid { min-height: auto; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: 1fr; }
}

@media (max-width: 580px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .brand small { display: none; }
  .card-grid { grid-template-columns: 1fr; }
  .section { padding: 74px 0; }
  .footer-wrap { flex-direction: column; }
}