:root {
  --bg: #0b0f17;
  --bg-alt: #10151f;
  --card: #141b28;
  --card-border: #232c3d;
  --text: #eef1f6;
  --text-muted: #9aa5b8;
  --accent: #ff7a45;
  --accent-soft: rgba(255, 122, 69, 0.12);
  --max-width: 1120px;
  --radius: 14px;
  font-size: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

img { max-width: 100%; display: block; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 15, 23, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--card-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

.brand img { height: 28px; width: 28px; }

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--accent);
  color: #16110b;
  font-weight: 800;
  font-size: 0.95rem;
}

.product-logo {
  height: 40px;
  width: 40px;
  border-radius: 10px;
  margin-bottom: 18px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: color 0.15s ease;
}

.main-nav a:hover,
.main-nav a.is-active {
  color: var(--text);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.lang-toggle {
  display: flex;
  border: 1px solid var(--card-border);
  border-radius: 999px;
  overflow: hidden;
}

.lang-toggle button {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 12px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.lang-toggle button.is-active {
  background: var(--accent);
  color: #16110b;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: #16110b;
}

.btn-primary:hover { transform: translateY(-1px); }

.btn-ghost {
  border-color: var(--card-border);
  color: var(--text);
}

.btn-ghost:hover { border-color: var(--accent); }

.btn-arrow::after {
  content: "→";
  transition: transform 0.15s ease;
}

.btn-arrow:hover::after { transform: translateX(3px); }

/* ---------- Hero ---------- */

.hero {
  padding: 96px 0 80px;
  border-bottom: 1px solid var(--card-border);
  background:
    radial-gradient(60% 60% at 85% 0%, var(--accent-soft) 0%, transparent 70%),
    var(--bg);
}

.kicker {
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 22px;
  max-width: 820px;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 0 34px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ---------- Sections ---------- */

section { padding: 76px 0; }

section.alt { background: var(--bg-alt); }

.section-head {
  max-width: 640px;
  margin-bottom: 44px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

.section-head p {
  color: var(--text-muted);
  margin: 0;
}

.grid {
  display: grid;
  gap: 20px;
}

.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

@media (max-width: 900px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 28px;
}

.card h3 {
  font-size: 1.08rem;
  margin: 0 0 10px;
}

.card p {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.95rem;
}

.step {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.step-index {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.building-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.building-list li {
  padding: 16px 20px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.building-list code {
  color: var(--text);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  text-align: center;
}

@media (max-width: 700px) {
  .stats { grid-template-columns: 1fr; }
}

.stat-value {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.01em;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 6px;
}

.footer-cta {
  text-align: center;
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  background: var(--bg-alt);
}

.footer-cta h2 { margin: 0 0 14px; }
.footer-cta p {
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 28px;
}

/* ---------- Fit list (product page) ---------- */

.fit-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.fit-list li {
  display: flex;
  gap: 14px;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  color: var(--text-muted);
}

.fit-list li::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.module-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
}

.module-table th, .module-table td {
  text-align: left;
  padding: 16px 20px;
  border-bottom: 1px solid var(--card-border);
  font-size: 0.92rem;
}

.module-table th {
  background: var(--card);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.module-table td.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--accent);
  white-space: nowrap;
}

.module-table tr:last-child td { border-bottom: none; }

.code-steps { display: grid; gap: 14px; }

.code-step {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 18px 20px;
}

.code-step .step-label {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 10px;
}

pre {
  margin: 0;
  padding: 14px 16px;
  background: #0a0d13;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.86rem;
  color: #d8e0ee;
}

/* ---------- Contact ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
}

@media (max-width: 800px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.8rem;
}

.contact-email {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
}

.link-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.link-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-weight: 600;
}

.link-list a:hover { color: var(--accent); }

/* ---------- Footer ---------- */

.site-footer {
  padding: 40px 0;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.88rem;
}