/* ===== BASE ===== */
:root {
  --bg: #0c0c0e;
  --surface: #141416;
  --surface-raised: #1c1c1f;
  --accent: #f59e0b;
  --accent-dim: rgba(245, 158, 11, 0.15);
  --text: #f0f0f2;
  --text-muted: #8a8a94;
  --border: rgba(255,255,255,0.08);
  --green: #22c55e;
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(12, 12, 14, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.header-nav {
  display: flex;
  gap: 32px;
}

.header-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 400;
  transition: color 0.2s;
}

.header-nav a:hover { color: var(--text); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 32px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245,158,11,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.hero-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 32px;
}

.label-dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(56px, 8vw, 100px);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 48px;
}

.hero-headline em {
  font-style: normal;
  color: var(--accent);
}

.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.hero-desc.secondary {
  font-size: 15px;
  color: var(--text-muted);
  opacity: 0.7;
}

/* Vance Badge */
.vance-badge {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 16px;
}

.badge-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.badge-icon {
  color: var(--green);
  display: flex;
}

.badge-label {
  font-size: 12px;
  color: var(--green);
  font-weight: 500;
}

.badge-stat {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
  margin-bottom: 4px;
}

.badge-note {
  font-size: 13px;
  color: var(--text-muted);
}

/* Activity Feed */
.activity-feed {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
}

.feed-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.feed-item:last-child { border-bottom: none; }

.feed-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-muted);
  margin-top: 6px;
  flex-shrink: 0;
}

.feed-dot.success {
  background: var(--green);
}

.feed-text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Price Tag */
.hero-price-tag {
  position: absolute;
  bottom: 40px;
  right: 32px;
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.3;
}

.hero-price-tag .price-per {
  font-size: 16px;
  font-weight: 400;
}

/* ===== FEATURES ===== */
.features {
  padding: 100px 32px;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.features-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.features-header {
  margin-bottom: 64px;
}

.features-title {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  transition: border-color 0.3s;
}

.feature-card:hover {
  border-color: var(--accent);
}

.feature-icon {
  color: var(--accent);
  margin-bottom: 20px;
  display: flex;
}

.feature-title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.feature-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== CLOSING ===== */
.closing {
  padding: 120px 32px;
  background: var(--bg);
}

.closing-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 32px;
}

.closing-body {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

/* Math Block */
.math-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  margin-bottom: 32px;
}

.math-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
}

.math-label {
  font-size: 14px;
  color: var(--text-muted);
  min-width: 100px;
}

.math-value {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
}

.math-value.strike {
  text-decoration: line-through;
  color: var(--text-muted);
}

.math-value.accent {
  color: var(--accent);
}

.math-value.green {
  color: var(--green);
}

.math-period {
  font-size: 14px;
  color: var(--text-muted);
}

.math-divider {
  height: 1px;
  background: var(--border);
  margin: 8px 0;
}

.math-row.final {
  border-top: 1px solid var(--border);
  margin-top: 4px;
  padding-top: 16px;
}

/* Tagline */
.closing-tagline {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tagline-text {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: -0.01em;
}

.tagline-text:last-child {
  color: var(--text);
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 48px 32px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  display: block;
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--text-muted);
}

.footer-note {
  font-size: 13px;
  color: var(--text-muted);
  opacity: 0.6;
  max-width: 280px;
  text-align: right;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header-nav { display: none; }
  
  .hero-headline {
    font-size: 52px;
  }
  
  .hero-split {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .hero-price-tag {
    position: static;
    margin-top: 40px;
    opacity: 1;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .closing-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .footer-inner {
    flex-direction: column;
    gap: 24px;
  }
  
  .footer-note {
    text-align: left;
  }
}

@media (max-width: 480px) {
  .hero { padding: 100px 20px 60px; }
  .features { padding: 64px 20px; }
  .closing { padding: 64px 20px; }
  .site-footer { padding: 32px 20px; }
  .header-inner { padding: 16px 20px; }
}