:root {
  --bg: #07131f;
  --panel: #102a43;
  --panel-2: #163b5c;
  --text: #f2f7fb;
  --muted: #b8c7d6;
  --accent: #22c55e;
  --accent-dark: #159447;
  --warning: #f59e0b;
  --danger-panel: rgba(245, 158, 11, 0.12);
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at 20% 0%, #1d4f78 0, #07131f 42%, #040910 100%);
  color: var(--text);
  min-height: 100vh;
}

.hero { padding: 24px; }

.nav {
  max-width: 1180px;
  margin: 0 auto 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: 0.02em; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 12px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), #38bdf8);
  color: #06111d;
  box-shadow: var(--shadow);
}
.brand-text { font-size: 18px; }
.toolbar { display: flex; gap: 8px; }
.lang-btn {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 12px;
  cursor: pointer;
}
.lang-btn.active { background: var(--accent); color: #05110a; border-color: transparent; font-weight: 700; }

.hero-grid {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(330px, 0.8fr);
  gap: 36px;
  align-items: center;
}

.eyebrow { color: #7dd3fc; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; font-size: 13px; }
h1 { font-size: clamp(36px, 5vw, 68px); line-height: 0.98; margin: 0 0 22px; letter-spacing: -0.05em; }
.lead { font-size: clamp(17px, 2vw, 21px); line-height: 1.6; color: var(--muted); max-width: 760px; }
.badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.badges span {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
  color: #dbeafe;
  font-size: 14px;
}

.install-card, .panel {
  background: linear-gradient(180deg, rgba(22, 59, 92, 0.92), rgba(16, 42, 67, 0.92));
  border: 1px solid var(--border);
  border-radius: 28px;
  box-shadow: var(--shadow);
}
.install-card { padding: 28px; }
.card-header h2, .panel h2 { margin: 0 0 10px; font-size: 26px; }
.card-header p, .panel p, .steps { color: var(--muted); line-height: 1.65; }
.field-label { display: block; margin: 24px 0 8px; color: #d7e6f5; font-weight: 700; }
.select {
  width: 100%;
  padding: 14px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #081a2a;
  color: var(--text);
  font-size: 15px;
}

esp-web-install-button { display: block; margin-top: 22px; }
.primary-btn {
  width: 100%;
  padding: 16px 20px;
  border: 0;
  border-radius: 16px;
  background: var(--accent);
  color: #031108;
  font-size: 17px;
  font-weight: 850;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}
.primary-btn:hover { background: var(--accent-dark); transform: translateY(-1px); }
.hint { font-size: 14px; color: var(--muted); margin-bottom: 0; }

.main { max-width: 1180px; margin: 34px auto 0; padding: 0 24px 42px; display: grid; gap: 22px; }
.panel { padding: 28px; }
.warning { background: linear-gradient(180deg, var(--danger-panel), rgba(16, 42, 67, 0.92)); border-color: rgba(245, 158, 11, 0.35); }
.note { background: rgba(34, 197, 94, 0.08); }
.steps { padding-left: 22px; }
.steps li { margin-bottom: 10px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
pre {
  white-space: pre-wrap;
  word-break: break-word;
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  color: #d7e6f5;
  overflow-x: auto;
}
.footer { max-width: 1180px; margin: 0 auto; padding: 0 24px 28px; color: var(--muted); }

@media (max-width: 860px) {
  .hero-grid, .two-col { grid-template-columns: 1fr; }
  .nav { margin-bottom: 34px; }
  .brand-text { font-size: 15px; }
}