:root {
  --color-bg: #FAFAF8;
  --color-surface: #FFFFFF;
  --color-text: #141413;
  --color-text-secondary: #5A5A56;
  --color-text-muted: #8A8A84;
  --color-green: #1A6B47;
  --color-green-dark: #134D33;
  --color-green-light: #E6F2EC;
  --color-green-glow: #22C55E;
  --color-border: #E4E2DE;
  --color-border-light: #F0EEEB;
  --color-warm: #F5F3EF;
  --color-gold: #B8860B;
  --color-gold-light: #FFF8E7;
  --color-red: #C4422B;
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 17px; scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container { max-width: 1140px; margin: 0 auto; padding: 0 1.5rem; }

.urgency-banner {
  background: var(--color-text);
  color: white;
  text-align: center;
  padding: 0.6rem 1rem;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.urgency-banner strong { color: var(--color-green-glow); }

.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
}
.site-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}
.site-nav { display: flex; align-items: center; gap: 2rem; }
.site-nav a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.15s;
}
.site-nav a:hover { color: var(--color-text); }
.nav-cta {
  background: var(--color-green) !important;
  color: white !important;
  padding: 0.5rem 1.15rem;
  border-radius: 6px;
  font-weight: 600 !important;
  font-size: 0.84rem !important;
  transition: background 0.15s !important;
}
.nav-cta:hover { background: var(--color-green-dark) !important; }

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0.25rem;
}

.hero {
  padding: 5rem 0 4rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(26,107,71,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-green);
  margin-bottom: 1rem;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: 3.5rem;
  line-height: 1.08;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}
.hero h1 em {
  font-style: italic;
  color: var(--color-green);
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 2rem;
  max-width: 480px;
}
.hero-actions { display: flex; align-items: center; gap: 1.25rem; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-green);
  color: white;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.9rem 1.8rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s;
}
.btn-primary:hover { background: var(--color-green-dark); transform: translateY(-1px); }
.btn-primary span { font-size: 1.1rem; }
.hero-price {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
}
.hero-price strong {
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.05rem;
}

.hero-preview {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
  position: relative;
}
.preview-tab-bar {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-warm);
}
.preview-tab {
  flex: 1;
  padding: 0.7rem 0.5rem;
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  font-family: var(--font-body);
}
.preview-tab.active {
  color: var(--color-green);
  border-bottom-color: var(--color-green);
  background: var(--color-surface);
}
.preview-panel { display: none; padding: 1.25rem; }
.preview-panel.active { display: block; }

.mock-week-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.75rem;
}
.mock-week-title { font-weight: 700; font-size: 0.88rem; }
.mock-week-meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-text-muted);
}
.mock-day {
  display: grid;
  grid-template-columns: 5.5rem 1fr auto;
  gap: 0.5rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.82rem;
  align-items: center;
}
.mock-day:last-child { border-bottom: none; }
.mock-day-name { font-weight: 600; font-size: 0.78rem; }
.mock-day-workout { color: var(--color-text-secondary); }
.mock-day-pace {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-green);
  text-align: right;
  font-weight: 500;
}
.mock-day-rest .mock-day-workout { color: var(--color-text-muted); }
.mock-day-rest .mock-day-pace { color: var(--color-text-muted); }

.mock-zone {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 0.75rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.82rem;
  align-items: center;
}
.mock-zone:last-child { border-bottom: none; }
.mock-zone-name { font-weight: 600; font-size: 0.78rem; }
.mock-zone-hr {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-text-secondary);
}
.mock-zone-pace {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-green);
  font-weight: 500;
}
.mock-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border-light);
}
.mock-metric { text-align: center; }
.mock-metric-val {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-green-dark);
}
.mock-metric-label { font-size: 0.68rem; color: var(--color-text-muted); margin-top: 0.1rem; }

.mock-course-header { margin-bottom: 0.75rem; }
.mock-course-title { font-weight: 700; font-size: 0.88rem; }
.mock-course-meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-text-muted);
  margin-top: 0.15rem;
}
.mock-strat {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border-light);
}
.mock-strat:last-child { border-bottom: none; }
.mock-strat-title {
  font-weight: 600;
  font-size: 0.82rem;
  margin-bottom: 0.2rem;
}
.mock-strat-desc {
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.proof-bar {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  padding: 1.5rem 0;
}
.proof-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  text-align: center;
}
.proof-number {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-green-dark);
  line-height: 1;
}
.proof-label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: 0.3rem;
}

.race-selector { padding: 4.5rem 0; }
.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-green);
  margin-bottom: 0.75rem;
}
.section-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 0.6rem;
  line-height: 1.15;
}
.section-sub {
  font-size: 1rem;
  color: var(--color-text-secondary);
  max-width: 540px;
  margin-bottom: 2rem;
  line-height: 1.6;
}
.race-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}
.race-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.25rem;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
  text-decoration: none;
  color: inherit;
}
.race-card:hover {
  border-color: var(--color-green);
  box-shadow: 0 4px 20px rgba(26,107,71,0.08);
  transform: translateY(-2px);
}
.race-card-name { font-weight: 700; font-size: 0.95rem; margin-bottom: 0.2rem; }
.race-card-date {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}
.race-card-detail {
  font-size: 0.78rem;
  color: var(--color-text-secondary);
  line-height: 1.45;
}
.race-card-arrow {
  display: inline-block;
  margin-top: 0.6rem;
  font-size: 0.78rem;
  color: var(--color-green);
  font-weight: 600;
}
.race-more {
  margin-top: 1.25rem;
  font-size: 0.88rem;
  color: var(--color-text-secondary);
}
.race-more a {
  color: var(--color-green);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.how-it-works {
  padding: 4.5rem 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  margin-top: 2.5rem;
}
.step { position: relative; }
.step-number {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-green);
  margin-bottom: 0.6rem;
}
.step-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
  line-height: 1.2;
}
.step-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}
.step-time {
  display: inline-block;
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  background: var(--color-warm);
  padding: 0.2em 0.6em;
  border-radius: 3px;
}

.science { padding: 4.5rem 0; }
.science-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 2rem;
}
.science-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.75rem;
  transition: border-color 0.2s;
}
.science-card:hover { border-color: var(--color-green); }
.science-icon {
  width: 36px;
  height: 36px;
  background: var(--color-green-light);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  margin-bottom: 1rem;
}
.science-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.4rem; }
.science-card p { font-size: 0.88rem; color: var(--color-text-secondary); line-height: 1.6; }

.testimonials {
  padding: 4.5rem 0;
  background: var(--color-warm);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 2rem;
}
.testimonial-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.5rem;
}
.testimonial-stars {
  color: var(--color-gold);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}
.testimonial-text {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--color-text);
  margin-bottom: 1rem;
}
.testimonial-author { display: flex; align-items: center; gap: 0.6rem; }
.testimonial-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-green-light);
  color: var(--color-green-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.75rem;
  flex-shrink: 0;
}
.testimonial-name { font-weight: 600; font-size: 0.82rem; }
.testimonial-detail { font-size: 0.72rem; color: var(--color-text-muted); }

.compare { padding: 4.5rem 0; }
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 2rem;
  font-size: 0.9rem;
}
.compare-table thead th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  border-bottom: 2px solid var(--color-border);
}
.compare-table thead th:last-child {
  color: var(--color-green-dark);
  background: var(--color-green-light);
  border-radius: 8px 8px 0 0;
}
.compare-table tbody td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--color-border-light);
  vertical-align: top;
}
.compare-table tbody td:first-child { font-weight: 600; color: var(--color-text); }
.compare-table tbody td:last-child { background: var(--color-green-light); }
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr:last-child td:last-child { border-radius: 0 0 8px 8px; }
.compare-check { color: var(--color-green); font-weight: 700; }
.compare-x { color: var(--color-text-muted); }

.final-cta {
  padding: 5rem 0;
  background: var(--color-text);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.final-cta::before {
  content: '';
  position: absolute;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(26,107,71,0.2) 0%, transparent 70%);
  pointer-events: none;
}
.final-cta h2 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 400;
  margin-bottom: 0.75rem;
  position: relative;
}
.final-cta p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 2rem;
  position: relative;
}
.btn-primary-light {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-green);
  color: white;
  font-weight: 700;
  font-size: 1.05rem;
  padding: 1rem 2.2rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s;
  position: relative;
  font-family: var(--font-body);
}
.btn-primary-light:hover { background: var(--color-green-glow); transform: translateY(-1px); }
.final-guarantee {
  margin-top: 1rem;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  position: relative;
}

.site-footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 3rem 0 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-brand {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}
.footer-brand-desc {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  max-width: 260px;
}
.footer-section h4 {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}
.footer-section ul { list-style: none; }
.footer-section li { margin-bottom: 0.4rem; }
.footer-section a {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  transition: color 0.15s;
}
.footer-section a:hover { color: var(--color-green); }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 1.25rem;
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero { padding: 3rem 0 2.5rem; }
  .hero h1 { font-size: 2.6rem; }
  .proof-grid { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
  .race-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: 1fr; gap: 2rem; }
  .science-grid { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .compare-table { font-size: 0.82rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
@media (max-width: 640px) {
  html { font-size: 16px; }
  .hero h1 { font-size: 2.2rem; }
  .section-title { font-size: 1.75rem; }
  .site-nav { display: none; }
  .mobile-toggle { display: block; }
  .proof-grid { grid-template-columns: repeat(2, 1fr); }
  .race-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .footer-grid { grid-template-columns: 1fr; }
  .compare-table thead th,
  .compare-table tbody td { padding: 0.5rem 0.6rem; font-size: 0.78rem; }
}
.site-nav.mobile-open {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--color-bg);
  z-index: 200;
  padding: 5rem 2rem 2rem;
  gap: 1rem;
}
.site-nav.mobile-open a { font-size: 1.15rem; }