:root {
  --bg: #0a0a0f;
  --bg-subtle: #12121a;
  --fg: #e8e8ed;
  --fg-muted: #8a8a9a;
  --mint: #3dffc0;
  --mint-dim: #2bc895;
  --mint-glow: rgba(61, 255, 192, 0.08);
  --card-bg: #16161f;
  --card-border: #222233;
  --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);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.mint { color: var(--mint); }

/* ===== HERO ===== */
.hero {
  padding: 100px 24px 80px;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-inner {
  max-width: 780px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--card-border);
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  color: var(--mint);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 32px;
  background: var(--mint-glow);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.lede {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 560px;
  line-height: 1.7;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 56px;
}

.grid-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 28px 24px;
  transition: border-color 0.2s;
}

.grid-card:hover {
  border-color: var(--mint-dim);
}

.card-icon {
  font-size: 20px;
  color: var(--mint);
  margin-bottom: 14px;
}

.card-label {
  font-family: var(--font-display);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--fg-muted);
  margin-bottom: 6px;
}

.card-value {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--fg);
}

/* ===== PROBLEM ===== */
.problem {
  padding: 100px 24px;
  background: var(--bg-subtle);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
}

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

.problem-label {
  font-family: var(--font-display);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--mint);
  margin-bottom: 24px;
}

.problem h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 20px;
}

.problem-sub {
  font-size: 1.15rem;
  color: var(--mint);
  font-style: italic;
}

/* ===== HOW ===== */
.how {
  padding: 100px 24px;
  max-width: 1100px;
  margin: 0 auto;
}

.how-label {
  font-family: var(--font-display);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--mint);
  margin-bottom: 48px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.step-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--card-border);
  line-height: 1;
  margin-bottom: 16px;
}

.step h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.step p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ===== FEATURES ===== */
.features {
  padding: 80px 24px 100px;
  background: var(--bg-subtle);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
}

.features-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-block {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 36px 32px;
  transition: border-color 0.2s;
}

.feature-block:hover {
  border-color: var(--mint-dim);
}

.feature-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--mint-glow);
  border: 1px solid rgba(61, 255, 192, 0.15);
  border-radius: 6px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  color: var(--mint);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 18px;
}

.feature-block h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-block p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ===== CLOSING ===== */
.closing {
  padding: 120px 24px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.closing-sub {
  font-size: 1.1rem;
  color: var(--fg-muted);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 40px 24px;
  border-top: 1px solid var(--card-border);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--fg);
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero { padding: 72px 20px 60px; }
  .hero-grid { grid-template-columns: 1fr; gap: 12px; }
  .steps { grid-template-columns: 1fr; gap: 32px; }
  .features-inner { grid-template-columns: 1fr; }
  .problem { padding: 72px 20px; }
  .how { padding: 72px 20px; }
  .features { padding: 60px 20px 72px; }
  .closing { padding: 80px 20px; }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .closing h2 { font-size: 1.6rem; }
  .feature-block { padding: 28px 22px; }
  .grid-card { padding: 22px 20px; }
}