:root {
  --bg: #0a0a0f;
  --bg-card: #12121a;
  --bg-accent: #1a1a2e;
  --fg: #e8e6e3;
  --fg-muted: #8a8a9a;
  --accent: #00e5a0;
  --accent-dim: rgba(0, 229, 160, 0.12);
  --danger: #ff4d6a;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --max-w: 1100px;
  --radius: 12px;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
}

/* ---- HERO ---- */
.hero {
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 80px 24px 60px;
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(0,229,160,0.08) 0%, transparent 70%),
    var(--bg);
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2.5px;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 32px;
}

.hero h1 {
  font-size: clamp(2.8rem, 7vw, 5rem);
  letter-spacing: -1.5px;
  margin-bottom: 24px;
}

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

.lede {
  max-width: 620px;
  font-size: 1.15rem;
  color: var(--fg-muted);
  margin-bottom: 48px;
}

.hero-cta {
  display: inline-block;
  background: var(--accent);
  color: #0a0a0f;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  padding: 16px 36px;
  border-radius: var(--radius);
  text-decoration: none;
  margin-bottom: 56px;
  transition: opacity 0.2s, transform 0.15s;
}
.hero-cta:hover { opacity: 0.9; transform: translateY(-2px); }

.hero-stat-row {
  display: flex;
  gap: 48px;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-top: 4px;
}

/* ---- PROBLEM ---- */
.problem {
  padding: 100px 24px;
  background: var(--bg-card);
}

.problem-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 20px;
}

.problem-text {
  max-width: 700px;
  color: var(--fg-muted);
  font-size: 1.05rem;
  margin-bottom: 48px;
}

.problem-text em {
  color: var(--danger);
  font-style: normal;
  font-weight: 500;
}

.problem-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.comparison-card {
  border-radius: var(--radius);
  padding: 36px 32px;
}

.comparison-card.old {
  background: rgba(255, 77, 106, 0.06);
  border: 1px solid rgba(255, 77, 106, 0.15);
}

.comparison-card.new {
  background: var(--accent-dim);
  border: 1px solid rgba(0, 229, 160, 0.2);
}

.card-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 20px;
}

.comparison-card.old .card-label { color: var(--danger); }
.comparison-card.new .card-label { color: var(--accent); }

.comparison-card ul {
  list-style: none;
}

.comparison-card li {
  padding: 8px 0;
  color: var(--fg-muted);
  font-size: 0.95rem;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.comparison-card li:last-child { border-bottom: none; }

.comparison-card.old li::before {
  content: '\2717 ';
  color: var(--danger);
  margin-right: 8px;
}

.comparison-card.new li::before {
  content: '\2713 ';
  color: var(--accent);
  margin-right: 8px;
}

/* ---- FEATURES ---- */
.features {
  padding: 100px 24px;
  max-width: var(--max-w);
  margin: 0 auto;
}

.features h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  text-align: center;
  margin-bottom: 12px;
}

.features-sub {
  text-align: center;
  color: var(--fg-muted);
  max-width: 560px;
  margin: 0 auto 56px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: border-color 0.25s;
}

.feature-card:hover {
  border-color: rgba(0, 229, 160, 0.25);
}

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.feature-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* ---- HOW ---- */
.how {
  padding: 100px 24px;
  background: var(--bg-card);
}

.how h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  text-align: center;
  margin-bottom: 60px;
}

.steps {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.step {
  display: flex;
  gap: 28px;
  align-items: flex-start;
}

.step-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.4;
  flex-shrink: 0;
  width: 60px;
}

.step-content h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

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

/* ---- CLOSING ---- */
.closing {
  padding: 120px 24px;
  text-align: center;
  background:
    radial-gradient(ellipse 60% 40% at 50% 100%, rgba(0,229,160,0.06) 0%, transparent 70%),
    var(--bg);
}

.closing-inner {
  max-width: 680px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 20px;
}

.closing p {
  color: var(--fg-muted);
  font-size: 1.05rem;
  margin-bottom: 16px;
}

.closing-tagline {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--accent);
  margin-top: 24px;
}

/* ---- FOOTER ---- */
.site-footer {
  padding: 48px 24px;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
}

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

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .hero { min-height: 70vh; padding: 60px 20px 48px; }
  .hero-stat-row { gap: 28px; }
  .stat-number { font-size: 1.6rem; }
  .problem-comparison { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .step { flex-direction: column; gap: 8px; }
  .step-num { width: auto; font-size: 1.6rem; }
  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2.2rem; }
  .hero-stat-row { flex-direction: column; gap: 20px; }
  .comparison-card { padding: 24px 20px; }
  .feature-card { padding: 28px 24px; }
}