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

:root {
  --bg: #0c0c14;
  --surface: #111118;
  --surface2: #18181f;
  --border: #252530;
  --fg: #f0f0f8;
  --fg-muted: #7a7a8c;
  --accent: #00e5a0;
  --accent-dim: rgba(0,229,160,0.12);
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

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

/* NAV */
nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(12,12,20,0.85); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.nav-inner { max-width: 1100px; margin: 0 auto; padding: 0 32px; height: 60px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-family: var(--font-display); font-size: 1.15rem; letter-spacing: -0.01em; color: var(--fg); }
.nav-links { display: flex; gap: 32px; }
.nav-links a { color: var(--fg-muted); text-decoration: none; font-size: 0.875rem; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--fg); }

/* HERO */
.hero { padding: 160px 32px 100px; max-width: 1100px; margin: 0 auto; }
.hero-badge { display: inline-block; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); background: var(--accent-dim); border: 1px solid rgba(0,229,160,0.2); padding: 6px 14px; border-radius: 100px; margin-bottom: 28px; }
.hero-headline { font-family: var(--font-display); font-size: clamp(3.2rem, 7vw, 5.5rem); line-height: 1.05; letter-spacing: -0.02em; color: var(--fg); margin-bottom: 24px; }
.hero-sub { font-size: 1.1rem; color: var(--fg-muted); max-width: 520px; margin-bottom: 40px; line-height: 1.7; }
.hero-cta-row { display: flex; gap: 16px; align-items: center; margin-bottom: 64px; }
.btn-primary { background: var(--accent); color: #0c0c14; text-decoration: none; padding: 12px 24px; border-radius: 8px; font-weight: 600; font-size: 0.9rem; transition: opacity 0.2s; }
.btn-primary:hover { opacity: 0.88; }
.btn-ghost { color: var(--fg-muted); text-decoration: none; padding: 12px 20px; font-size: 0.9rem; border: 1px solid var(--border); border-radius: 8px; transition: color 0.2s, border-color 0.2s; }
.btn-ghost:hover { color: var(--fg); border-color: var(--fg-muted); }

/* HERO SCREENSHOT */
.hero-screenshot { width: 100%; }
.screenshot-label { font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-muted); margin-bottom: 16px; }
.screenshot-mockup { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; padding: 28px 32px; }
.mockup-top { display: flex; gap: 40px; align-items: flex-start; margin-bottom: 28px; }
.skeleton-viz { width: 120px; flex-shrink: 0; }
.skeleton-viz svg { width: 100%; height: auto; }
.joint-data { display: flex; flex-direction: column; gap: 10px; flex: 1; }
.joint-row { display: flex; justify-content: space-between; align-items: center; padding: 8px 12px; background: var(--surface2); border-radius: 6px; }
.joint-label { font-size: 0.72rem; color: var(--fg-muted); font-weight: 500; letter-spacing: 0.06em; }
.joint-val { font-family: var(--font-body); font-size: 0.95rem; font-weight: 600; color: var(--fg); }
.joint-val.green { color: var(--accent); }
.ai-coach-block { border-top: 1px solid var(--border); padding-top: 20px; }
.ai-label { font-size: 0.65rem; letter-spacing: 0.14em; color: var(--accent); font-weight: 700; margin-bottom: 8px; }
.ai-text { font-size: 0.875rem; color: var(--fg-muted); line-height: 1.6; }

/* METRICS */
.metrics { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 56px 32px; display: flex; align-items: center; justify-content: center; gap: 0; }
.metric { text-align: center; padding: 0 48px; }
.metric-value { font-family: var(--font-display); font-size: 3.2rem; color: var(--accent); line-height: 1; margin-bottom: 8px; }
.metric-label { font-size: 0.875rem; font-weight: 600; color: var(--fg); margin-bottom: 4px; }
.metric-note { font-size: 0.75rem; color: var(--fg-muted); }
.metric-divider { width: 1px; height: 60px; background: var(--border); }

/* HOW IT WORKS */
.how-it-works { padding: 100px 32px; max-width: 1100px; margin: 0 auto; }
.section-label { font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: 16px; }
.section-headline { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3rem); line-height: 1.15; letter-spacing: -0.015em; color: var(--fg); max-width: 600px; margin-bottom: 64px; }
.pipeline-steps { display: flex; align-items: flex-start; gap: 16px; }
.pipeline-step { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 28px; flex: 1; }
.step-number { font-size: 0.7rem; letter-spacing: 0.1em; color: var(--accent); font-weight: 700; margin-bottom: 12px; }
.pipeline-step h3 { font-size: 1rem; font-weight: 600; color: var(--fg); margin-bottom: 10px; }
.pipeline-step p { font-size: 0.85rem; color: var(--fg-muted); line-height: 1.65; }
.pipeline-arrow { display: flex; align-items: center; padding-top: 28px; }

/* DASHBOARD FEATURES */
.dashboard-section { padding: 100px 32px; background: var(--surface); border-top: 1px solid var(--border); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; margin-bottom: 40px; }
.feature-card { background: var(--surface2); padding: 32px; }
.feature-icon { margin-bottom: 16px; }
.feature-card h3 { font-size: 0.9rem; font-weight: 600; color: var(--fg); margin-bottom: 8px; }
.feature-card p { font-size: 0.8rem; color: var(--fg-muted); line-height: 1.65; }

/* PRIVACY NOTE */
.privacy-note { display: flex; align-items: flex-start; gap: 16px; background: var(--accent-dim); border: 1px solid rgba(0,229,160,0.15); border-radius: 10px; padding: 20px 24px; margin-top: 40px; }
.privacy-icon { flex-shrink: 0; padding-top: 2px; }
.privacy-note strong { font-size: 0.875rem; color: var(--fg); display: block; margin-bottom: 4px; }
.privacy-note div { font-size: 0.8rem; color: var(--fg-muted); }

/* VALIDATION */
.validation { padding: 100px 32px; max-width: 1100px; margin: 0 auto; }
.validation-sub { font-size: 1rem; color: var(--fg-muted); max-width: 540px; margin-bottom: 56px; line-height: 1.7; }
.validation-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
.validation-item { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 28px; }
.val-stat { font-family: var(--font-display); font-size: 2.4rem; color: var(--accent); margin-bottom: 12px; }
.val-context { font-size: 0.82rem; color: var(--fg-muted); line-height: 1.65; }
.validation-links { display: flex; align-items: center; gap: 12px; margin-bottom: 40px; }
.val-link { color: var(--accent); text-decoration: none; font-size: 0.875rem; font-weight: 500; }
.val-link:hover { text-decoration: underline; }
.val-sep { color: var(--fg-muted); }
.clinical-note { background: var(--surface2); border: 1px solid var(--border); border-radius: 12px; padding: 24px 28px; }
.clinical-badge { display: inline-block; font-size: 0.65rem; letter-spacing: 0.1em; font-weight: 700; color: #f5a623; background: rgba(245,166,35,0.12); border: 1px solid rgba(245,166,35,0.2); padding: 4px 10px; border-radius: 100px; margin-bottom: 10px; }
.clinical-note p { font-size: 0.875rem; color: var(--fg-muted); line-height: 1.65; }

/* CLOSING */
.closing { padding: 100px 32px; max-width: 1100px; margin: 0 auto; border-top: 1px solid var(--border); }
.closing-headline { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.015em; color: var(--fg); margin-bottom: 20px; }
.closing-body { font-size: 1rem; color: var(--fg-muted); max-width: 560px; line-height: 1.75; margin-bottom: 56px; }
.products-row { display: flex; gap: 0; align-items: stretch; }
.product { flex: 1; padding: 28px 32px; background: var(--surface); border: 1px solid var(--border); }
.product:first-child { border-radius: 12px 0 0 12px; }
.product:last-child { border-radius: 0 12px 12px 0; }
.product-divider { width: 1px; background: var(--border); }
.product-name { font-size: 0.875rem; font-weight: 600; color: var(--fg); margin-bottom: 6px; }
.product-desc { font-size: 0.78rem; color: var(--fg-muted); line-height: 1.6; }

/* FOOTER */
footer { border-top: 1px solid var(--border); padding: 64px 32px 40px; max-width: 1100px; margin: 0 auto; }
.footer-top { margin-bottom: 48px; }
.footer-brand { font-family: var(--font-display); font-size: 1.4rem; margin-bottom: 8px; }
.footer-tagline { font-size: 0.875rem; color: var(--fg-muted); }
.footer-links { display: flex; gap: 64px; margin-bottom: 64px; }
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col-label { font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--fg-muted); font-weight: 600; margin-bottom: 4px; }
.footer-col a { color: var(--fg-muted); text-decoration: none; font-size: 0.875rem; }
.footer-col a:hover { color: var(--fg); }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 28px; font-size: 0.78rem; color: var(--fg-muted); }

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero { padding: 120px 24px 64px; }
  .hero-headline { font-size: 2.8rem; }
  .hero-cta-row { flex-direction: column; align-items: flex-start; }
  .metrics { flex-direction: column; gap: 24px; }
  .metric-divider { width: 60px; height: 1px; }
  .pipeline-steps { flex-direction: column; }
  .pipeline-arrow { transform: rotate(90deg); padding: 0; }
  .features-grid { grid-template-columns: 1fr; }
  .validation-grid { grid-template-columns: 1fr; }
  .products-row { flex-direction: column; }
  .product { border-radius: 8px !important; }
  .product-divider { display: none; }
  .footer-links { gap: 32px; flex-wrap: wrap; }
  .mockup-top { flex-direction: column; gap: 24px; }
  .nav-links { display: none; }
}