:root {
  --bg: #0c0e14;
  --surface: #141720;
  --surface2: #1c2030;
  --border: #252a3a;
  --fg: #e8eaf0;
  --fg-muted: #7a8099;
  --accent: #f59e0b;
  --accent-dim: #b4730a;
  --green: #10b981;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12, 14, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo-mark {
  width: 28px;
  height: 28px;
  background: var(--accent);
  color: #000;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.5px;
}
.logo-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--fg);
}
.logo-accent { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.nav-link {
  font-size: 0.875rem;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.nav-link:hover { color: var(--fg); }
.nav-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 12px;
  color: var(--fg-muted);
}
.status-dot {
  width: 7px;
  height: 7px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2.5s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Hero */
.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 2rem 4rem;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.hero-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}
.headline-accent { color: var(--accent); }
.hero-lede {
  font-size: 1.05rem;
  color: var(--fg-muted);
  max-width: 42ch;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.stat-item {
  display: flex;
  flex-direction: column;
}
.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--fg);
  font-family: var(--font-display);
}
.stat-label {
  font-size: 11px;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* OS Mockup */
.os-mockup {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,0.4);
}
.mockup-bar {
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.mockup-dot.red { background: #ff5f57; }
.mockup-dot.yellow { background: #febc2e; }
.mockup-dot.green { background: #28c840; }
.mockup-title {
  font-size: 11px;
  color: var(--fg-muted);
  margin-left: 0.75rem;
  font-weight: 500;
}
.mockup-body {
  display: flex;
  height: 280px;
}
.mockup-sidebar {
  width: 140px;
  background: var(--surface2);
  border-right: 1px solid var(--border);
  padding: 1rem 0;
  flex-shrink: 0;
}
.sidebar-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1rem;
  font-size: 12px;
  color: var(--fg-muted);
  cursor: default;
}
.sidebar-item.active {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent);
  border-left: 2px solid var(--accent);
}
.sidebar-icon { font-size: 13px; }
.mockup-main {
  flex: 1;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.mockup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.mh-title { font-size: 13px; font-weight: 600; color: var(--fg); }
.mh-badge {
  font-size: 10px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--green);
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 600;
}
.mockup-tasks { display: flex; flex-direction: column; gap: 0.6rem; }
.mt-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 12px;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  background: var(--surface2);
}
.mt-row.done { opacity: 0.5; }
.mt-row.active { background: rgba(245,158,11,0.08); }
.mt-check {
  font-size: 11px;
  width: 16px;
  text-align: center;
}
.mt-row.done .mt-check { color: var(--green); }
.mt-row.active .mt-check { color: var(--accent); }
.mt-row.pending .mt-check { color: var(--fg-muted); }
.mockup-progress { display: flex; align-items: center; gap: 0.75rem; }
.mp-label { font-size: 11px; color: var(--fg-muted); white-space: nowrap; }
.mp-bar {
  flex: 1;
  height: 4px;
  background: var(--surface2);
  border-radius: 2px;
  overflow: hidden;
}
.mp-fill { height: 100%; background: var(--accent); border-radius: 2px; }
.mp-pct { font-size: 11px; color: var(--accent); font-weight: 600; }

/* Capabilities */
.capabilities {
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 2rem;
  border-top: 1px solid var(--border);
}
.cap-header { margin-bottom: 3.5rem; }
.cap-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 0.75rem;
}
.cap-sub { font-size: 1rem; color: var(--fg-muted); }
.cap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.cap-card {
  background: var(--surface);
  padding: 2.5rem 2rem;
}
.cap-icon {
  width: 44px;
  height: 44px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 1.5rem;
}
.cap-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.cap-card p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* OS Features */
.osfeatures {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 2rem;
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 5rem;
  align-items: start;
}
.osf-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.osf-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 2.5vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
}
.osf-list { display: flex; flex-direction: column; gap: 0; }
.osf-item {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
}
.osf-item:last-child { border-bottom: none; }
.osf-num {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  padding-top: 4px;
  letter-spacing: 0.05em;
}
.osf-body h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}
.osf-body p {
  font-size: 0.875rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* Closing */
.closing {
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 2rem 6rem;
  border-top: 1px solid var(--border);
}
.closing-inner {
  max-width: 640px;
}
.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}
.closing-sub {
  font-size: 1rem;
  color: var(--fg-muted);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.footer-logo {
  width: 24px;
  height: 24px;
  background: var(--accent);
  color: #000;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.footer-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--fg-muted);
}
.footer-meta {
  font-size: 12px;
  color: var(--fg-muted);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero { padding: 3rem 1.5rem 2.5rem; }
  .cap-grid { grid-template-columns: 1fr; }
  .osfeatures { grid-template-columns: 1fr; gap: 2.5rem; }
  .capabilities, .osfeatures, .closing { padding-left: 1.5rem; padding-right: 1.5rem; }
  .mockup-main { padding: 1rem; }
  .mockup-sidebar { width: 110px; }
}
@media (max-width: 480px) {
  .hero-stats { flex-wrap: wrap; gap: 1rem; }
  .nav-status { display: none; }
}