:root {
  --bg: #0a0a0f;
  --bg-subtle: #12121a;
  --bg-card: #16161f;
  --fg: #e8e8ed;
  --fg-muted: #8a8a9a;
  --accent: #00e5a0;
  --accent-dim: #00c48a;
  --accent-glow: rgba(0, 229, 160, 0.15);
  --danger: #ff4d6a;
  --border: #222233;
  --radius: 12px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

html { scroll-behavior: smooth; }

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

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 60px;
  padding: 80px 40px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner { max-width: 560px; }

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--accent);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  margin-bottom: 24px;
  color: var(--fg);
}

.hero h1 .accent {
  color: var(--accent);
  position: relative;
}

.lede {
  font-size: 1.1rem;
  color: var(--fg-muted);
  max-width: 480px;
  line-height: 1.7;
}

/* Protocol Card Visual */
.hero-visual { flex-shrink: 0; }

.protocol-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  width: 340px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.protocol-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.protocol-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--fg-muted);
}

.protocol-dot.active {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.protocol-label {
  font-size: 0.75rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.protocol-name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.protocol-steps { display: flex; flex-direction: column; gap: 10px; }

.step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--bg-subtle);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.step-num {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--accent);
  font-size: 0.75rem;
}

.protocol-footer {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--accent-dim);
}

/* ===== PROBLEM ===== */
.problem {
  padding: 120px 40px;
  background: var(--bg-subtle);
}

.problem-inner { max-width: 1000px; margin: 0 auto; }

.problem h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 60px;
  text-align: center;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.problem-item {
  padding: 32px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.problem-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 77, 106, 0.12);
  color: var(--danger);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.problem-item h3 {
  font-size: 1.05rem;
  margin-bottom: 12px;
}

.problem-item p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ===== FEATURES ===== */
.features {
  padding: 120px 40px;
}

.features-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 100px;
}

.feature-block {
  display: flex;
  align-items: center;
  gap: 60px;
}

.feature-block.reverse { flex-direction: row-reverse; }

.feature-text { flex: 1; }

.feature-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--accent-glow);
  color: var(--accent);
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.feature-text h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 16px;
}

.feature-text p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.feature-visual { flex-shrink: 0; width: 300px; }

.mini-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.mini-card.dark {
  background: var(--bg);
  border-color: var(--accent);
  text-align: center;
}

.mc-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}

.mc-row:last-child { border-bottom: none; }

.mc-label { color: var(--fg-muted); }
.mc-val { color: var(--fg); font-weight: 500; }

.mc-metric {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.mc-chart {
  font-size: 1.6rem;
  letter-spacing: 4px;
  color: var(--accent);
  margin-bottom: 12px;
}

.mc-delta {
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 500;
}

.mc-timeline { display: flex; flex-direction: column; gap: 0; }

.tl-item {
  display: flex;
  gap: 16px;
  padding: 12px 0;
  border-left: 2px solid var(--border);
  padding-left: 16px;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.tl-item.active {
  border-left-color: var(--accent);
  color: var(--fg);
}

.tl-time {
  font-family: var(--font-display);
  font-weight: 600;
  min-width: 40px;
  color: var(--accent-dim);
}

/* ===== HOW / STATS ===== */
.how {
  padding: 120px 40px;
  background: var(--bg-subtle);
  text-align: center;
}

.how-inner { max-width: 800px; margin: 0 auto; }

.how h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 20px;
}

.how-sub {
  color: var(--fg-muted);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto 60px;
  line-height: 1.7;
}

.how-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--fg-muted);
}

/* ===== CLOSING ===== */
.closing {
  padding: 140px 40px;
  text-align: center;
}

.closing-inner {
  max-width: 640px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 24px;
}

.closing p {
  color: var(--fg-muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 40px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 6px;
}

.footer-note {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding: 60px 24px;
    min-height: auto;
    gap: 40px;
  }

  .lede { margin: 0 auto; }

  .protocol-card { width: 100%; max-width: 340px; }

  .problem-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .problem { padding: 80px 24px; }

  .features { padding: 80px 24px; }

  .features-inner { gap: 60px; }

  .feature-block,
  .feature-block.reverse {
    flex-direction: column;
    text-align: center;
  }

  .feature-visual { width: 100%; max-width: 300px; }

  .how { padding: 80px 24px; }

  .how-stats {
    flex-direction: column;
    gap: 32px;
  }

  .closing { padding: 80px 24px; }

  .stat-number { font-size: 2.2rem; }
}