:root {
  --bg: #080808;
  --bg-elevated: #111113;
  --bg-card: #16161a;
  --fg: #e8e8ec;
  --fg-muted: #7a7a85;
  --accent: #00ff6a;
  --accent-dim: rgba(0, 255, 106, 0.12);
  --accent-glow: rgba(0, 255, 106, 0.25);
  --red-muted: #ff4d4d;
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --max-width: 1100px;
}

* { 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: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 32px 80px;
  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: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 6px 16px;
  border-radius: 100px;
  border: 1px solid rgba(0, 255, 106, 0.2);
  margin-bottom: 32px;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(3.2rem, 8vw, 6.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 28px;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 36px;
}

/* Hero CTA */
.hero-cta-row {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.hero-cta-btn {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #080808;
  background: var(--accent);
  padding: 14px 32px;
  border-radius: 10px;
  text-decoration: none;
  transition: background 0.2s, transform 0.1s;
}

.hero-cta-btn:hover { background: #00e05d; transform: translateY(-1px); }
.hero-cta-btn:active { transform: scale(0.98); }

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

.hero-stat {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--fg-muted);
  max-width: 260px;
}

/* ===== PROBLEM ===== */
.problem {
  padding: 120px 32px;
  background: var(--bg-elevated);
}

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

.problem-label, .how-label, .cat-label, .diff-label {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.problem h2, .how h2, .difference h2 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
}

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

.problem-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 32px;
  transition: border-color 0.2s;
}

.problem-card:hover {
  border-color: rgba(0, 255, 106, 0.2);
}

.problem-icon {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--red-muted);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 77, 77, 0.1);
  border-radius: 10px;
  margin-bottom: 16px;
}

.problem-card p {
  color: var(--fg-muted);
  font-size: 1rem;
  line-height: 1.6;
}

/* ===== HOW ===== */
.how {
  padding: 120px 32px;
}

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

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

.step {
  display: flex;
  gap: 32px;
  padding: 40px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.step:last-child { border-bottom: none; }

.step-num {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: 700;
  color: rgba(255,255,255,0.06);
  line-height: 1;
  min-width: 100px;
}

.step-content h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--fg);
}

.step-content p {
  color: var(--fg-muted);
  font-size: 1rem;
  max-width: 520px;
}

/* ===== CATEGORIES ===== */
.categories {
  padding: 100px 32px;
  background: var(--bg-elevated);
  overflow: hidden;
}

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

.cat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 12px;
  justify-content: center;
}

.cat-tag {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 10px 22px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 100px;
  color: var(--fg-muted);
  white-space: nowrap;
}

.cat-tag.accent-tag {
  color: var(--accent);
  border-color: rgba(0, 255, 106, 0.25);
  background: var(--accent-dim);
}

/* ===== DIFFERENCE ===== */
.difference {
  padding: 120px 32px;
}

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

.diff-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.diff-col {
  padding: 36px;
  border-radius: 14px;
}

.diff-them {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
}

.diff-us {
  background: var(--accent-dim);
  border: 1px solid rgba(0, 255, 106, 0.2);
}

.diff-col h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--fg-muted);
}

.diff-us h3 {
  color: var(--accent);
}

.diff-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.diff-col li {
  font-size: 0.95rem;
  color: var(--fg-muted);
  padding-left: 20px;
  position: relative;
}

.diff-them li::before {
  content: '\2013';
  position: absolute;
  left: 0;
  color: var(--red-muted);
}

.diff-us li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--accent);
}

.diff-us li {
  color: var(--fg);
}

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

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

.closing-quote {
  padding: 60px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 60px;
}

.closing-quote h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3.5vw, 2.4rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--accent);
  margin-bottom: 24px;
}

.closing-attr {
  font-size: 0.95rem;
  color: var(--fg-muted);
}

.closing-vision p {
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--fg-muted);
  max-width: 640px;
  margin-bottom: 16px;
}

.closing-vision strong {
  color: var(--fg);
}

.vision-end {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--accent) !important;
  margin-top: 24px;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 48px 32px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

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

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

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero { padding: 80px 20px 60px; }
  .problem, .how, .difference, .closing { padding: 80px 20px; }
  .categories { padding: 60px 20px; }

  .problem-grid { grid-template-columns: 1fr; }
  .diff-compare { grid-template-columns: 1fr; }

  .step { flex-direction: column; gap: 8px; }
  .step-num { font-size: 2.5rem; min-width: auto; }

  .hero-stat { flex-direction: column; gap: 4px; }
  .stat-number { font-size: 2.5rem; }

  .footer-inner { flex-direction: column; gap: 8px; text-align: center; }

  .cat-tag { font-size: 0.8rem; padding: 8px 16px; }
}