:root {
  --navy: #111734;
  --navy-soft: #1c2547;
  --blue: #2f6fb8;
  --blue-bright: #49a3ef;
  --blue-pale: #eaf4fd;
  --bg: #f3f6fa;
  --card: #ffffff;
  --text: #1a2033;
  --muted: #5c6478;
  --border: #e3e8ef;
  --red: #d64545;
  --green: #2f9e6e;
  --radius: 14px;
  --shadow: 0 4px 24px rgba(17, 23, 52, 0.06);
  --shadow-lg: 0 12px 40px rgba(17, 23, 52, 0.12);
  --maxw: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Open Sans", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 {
  font-family: "Montserrat", "Segoe UI", sans-serif;
  color: var(--navy);
  line-height: 1.2;
  margin: 0 0 0.5em;
}
p { margin: 0 0 1em; color: var(--muted); }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-bright); }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
  background: var(--blue-pale);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--blue); color: #fff; }
.btn-ghost { background: #fff; color: var(--navy); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }

/* ---------- Robot page switching ---------- */
.robot-page { display: none; }
.robot-page.active { display: block; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { height: 28px; width: auto; }
.robot-tabs {
  display: flex;
  gap: 4px;
  background: var(--bg);
  padding: 5px;
  border-radius: 12px;
  border: 1px solid var(--border);
}
.robot-tab {
  border: none;
  background: transparent;
  padding: 9px 18px;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  cursor: pointer;
  position: relative;
}
.robot-tab.active { background: var(--navy); color: #fff; }
.robot-tab .soon-dot {
  position: absolute;
  top: 4px;
  right: 6px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue-bright);
}
.header-cta { display: flex; align-items: center; gap: 10px; }
.header-cta .btn { padding: 10px 16px; font-size: 0.85rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 80px 0 60px;
  background:
    radial-gradient(circle at 15% 20%, rgba(73,163,239,0.10), transparent 45%),
    radial-gradient(circle at 85% 0%, rgba(47,111,184,0.08), transparent 40%),
    linear-gradient(180deg, #0d1330 0%, var(--navy) 55%, #16204a 100%);
  color: #fff;
  overflow: hidden;
}
.hero .wrap { position: relative; z-index: 2; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
.hero h1 { color: #fff; font-size: 2.6rem; margin-bottom: 18px; }
.hero h1 span { color: var(--blue-bright); }
.hero p.lead { color: #b9c2d9; font-size: 1.08rem; max-width: 46ch; }
.hero .eyebrow { background: rgba(73,163,239,0.15); color: var(--blue-bright); }
.hero-actions { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.hero-actions .btn-ghost { background: rgba(255,255,255,0.06); color: #fff; border-color: rgba(255,255,255,0.18); }
.hero-actions .btn-ghost:hover { border-color: var(--blue-bright); color: var(--blue-bright); }
.hero-actions .btn-primary { background: var(--blue-bright); color: var(--navy); }
.hero-actions .btn-primary:hover { background: #fff; }
.hero-media {
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,0.12);
}
.hero-media img { width: 100%; }

.specs-strip {
  background: var(--card);
  border-bottom: 1px solid var(--border);
}
.specs-strip .wrap {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
}
.spec-item {
  padding: 22px 20px;
  border-right: 1px solid var(--border);
  text-align: center;
}
.spec-item:last-child { border-right: none; }
.spec-item .val { font-family: "Montserrat", sans-serif; font-weight: 700; color: var(--navy); font-size: 1.15rem; }
.spec-item .lbl { font-size: 0.74rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; margin-top: 3px; }

/* ---------- Section shell ---------- */
section.block { padding: 84px 0; }
section.block.tight { padding: 60px 0; }
.block-head { max-width: 640px; margin: 0 auto 44px; text-align: center; }
.block-head h2 { font-size: 2rem; }
.block-head p { font-size: 1.02rem; }
.alt-bg { background: #fff; }

/* ---------- Capabilities grid ---------- */
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.cap-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.cap-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.cap-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--blue-pale);
  color: var(--blue);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  font-size: 1.3rem;
}
.cap-card h3 { font-size: 1.08rem; margin-bottom: 8px; }
.cap-card p { font-size: 0.92rem; margin-bottom: 0; }
.cap-card .tag-row { margin-top: 12px; display: flex; gap: 6px; flex-wrap: wrap; }
.cap-card .tag {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background: var(--bg);
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 3px 9px;
  border-radius: 999px;
}

/* ---------- Interface tabs ---------- */
.iface-shell {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.iface-tabbar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 14px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.iface-tab {
  border: none;
  background: transparent;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.82rem;
  padding: 9px 14px;
  border-radius: 8px;
  cursor: pointer;
}
.iface-tab.active { background: var(--navy); color: #fff; }
.iface-panel { display: none; }
.iface-panel.active { display: block; }
.iface-media { background: #0d1330; }
.iface-media img { width: 100%; display: block; }
.iface-copy { padding: 28px 32px 32px; }
.iface-copy h3 { font-size: 1.3rem; margin-bottom: 10px; }
.iface-copy p { font-size: 0.98rem; }
.iface-copy ul { margin: 14px 0 0; padding-left: 20px; color: var(--muted); font-size: 0.94rem; }
.iface-copy li { margin-bottom: 6px; }

/* ---------- Downloads ---------- */
.dl-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.dl-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.dl-card .dl-icon {
  width: 46px; height: 46px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 16px;
  background: var(--navy);
  color: #fff;
}
.dl-card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.dl-card p { font-size: 0.9rem; flex-grow: 1; }
.dl-card .dl-meta { font-size: 0.78rem; color: var(--muted); margin-bottom: 14px; }
.dl-card.notice { background: #fff8e8; border-color: #f0dfa8; }
.dl-card.notice .dl-icon { background: #e8a916; }

/* ---------- Contact / CTA ---------- */
.cta {
  background: linear-gradient(135deg, var(--navy), #1c2b54);
  border-radius: 22px;
  padding: 56px;
  text-align: center;
  color: #fff;
}
.cta h2 { color: #fff; }
.cta p { color: #b9c2d9; max-width: 52ch; margin-left: auto; margin-right: auto; }
.cta .btn-primary { background: var(--blue-bright); color: var(--navy); margin-top: 8px; }
.cta .btn-primary:hover { background: #fff; }

/* ---------- Coming soon pages ---------- */
.coming-soon {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 24px;
  background:
    radial-gradient(circle at 50% 0%, rgba(73,163,239,0.08), transparent 55%),
    var(--bg);
}
.coming-soon .cs-inner { max-width: 480px; }
.coming-soon .cs-badge {
  width: 72px; height: 72px;
  margin: 0 auto 24px;
  border-radius: 18px;
  background: var(--navy);
  color: var(--blue-bright);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.8rem;
  font-family: "Montserrat", sans-serif;
  font-weight: 700;
}
.coming-soon h2 { font-size: 1.8rem; }
.coming-soon .eyebrow { background: var(--blue-pale); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy);
  color: #b9c2d9;
  padding: 48px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-grid h4 { color: #fff; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 14px; }
.footer-grid a { color: #b9c2d9; display: block; margin-bottom: 8px; font-size: 0.92rem; }
.footer-grid a:hover { color: var(--blue-bright); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom .legal-links { display: flex; gap: 18px; }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.footer-brand img { height: 24px; }
.footer-wordmark {
  font-family: "Montserrat", sans-serif;
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: 0.03em;
  color: #fff;
}
.footer-wordmark span { color: var(--blue-bright); }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-media { order: -1; }
  .cap-grid { grid-template-columns: repeat(2, 1fr); }
  .dl-grid { grid-template-columns: 1fr; }
  .specs-strip .wrap { grid-template-columns: repeat(2, 1fr); }
  .spec-item:nth-child(2n) { border-right: none; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .site-header .wrap { height: auto; flex-wrap: wrap; padding: 12px 16px; gap: 12px; }
  .robot-tabs { order: 3; width: 100%; justify-content: space-between; }
  .header-cta { display: none; }
  .hero { padding: 48px 0 40px; }
  .hero h1 { font-size: 1.9rem; }
  .cap-grid { grid-template-columns: 1fr; }
  .iface-copy { padding: 22px; }
  .cta { padding: 36px 22px; }
}