:root {
  --bg: #0a0a0f;
  --bg-subtle: #12121a;
  --fg: #e8e6e3;
  --fg-dim: #8a8690;
  --accent: #c084fc;
  --accent-glow: rgba(192, 132, 252, 0.15);
  --accent-bright: #d8b4fe;
  --red-dim: #f87171;
  --green: #4ade80;
  --border: rgba(255, 255, 255, 0.06);
  --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);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

/* --- GLOBAL BUTTONS --- */
.btn-primary {
  display: inline-block;
  padding: 14px 32px;
  background: var(--accent);
  color: #0a0a0f;
  border-radius: 10px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -0.01em;
  transition: background 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}
.btn-primary:hover {
  background: var(--accent-bright);
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(192, 132, 252, 0.35);
}

/* --- HERO --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  text-align: center;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(ellipse, rgba(192, 132, 252, 0.12) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid rgba(192, 132, 252, 0.3);
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 32px;
  background: rgba(192, 132, 252, 0.06);
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  color: #fff;
  margin-bottom: 24px;
}

.lede {
  font-size: 1.15rem;
  color: var(--fg-dim);
  max-width: 600px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

.hero-cta {
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  justify-content: center;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-bright);
}

.stat-label {
  font-size: 0.82rem;
  color: var(--fg-dim);
  max-width: 160px;
  text-align: center;
  line-height: 1.4;
}

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

.problem-inner {
  max-width: 900px;
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: #fff;
  margin-bottom: 16px;
}

.problem-text {
  color: var(--fg-dim);
  font-size: 1.1rem;
  max-width: 640px;
  margin-bottom: 48px;
  line-height: 1.75;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.problem-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
}

.problem-card:first-child {
  border-color: rgba(192, 132, 252, 0.3);
  background: var(--accent-glow);
}

.problem-card-dim {
  opacity: 0.55;
}

.problem-icon {
  font-size: 1.6rem;
  margin-bottom: 12px;
}

.problem-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 4px;
}

.problem-card p {
  font-size: 0.82rem;
  color: var(--fg-dim);
}

/* --- FEATURES --- */
.features {
  padding: 100px 24px;
}

.features-inner {
  max-width: 960px;
  margin: 0 auto;
}

.features h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: #fff;
  margin-bottom: 12px;
}

.features-sub {
  color: var(--fg-dim);
  font-size: 1.1rem;
  margin-bottom: 56px;
}

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

.feature-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: border-color 0.3s ease;
}

.feature-card:hover {
  border-color: rgba(192, 132, 252, 0.25);
}

.feature-num {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

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

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

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

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

.how h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: #fff;
  margin-bottom: 48px;
  text-align: center;
}

.how-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.how-col {
  border-radius: var(--radius);
  padding: 32px 28px;
}

.how-old {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
}

.how-new {
  background: var(--accent-glow);
  border: 1px solid rgba(192, 132, 252, 0.25);
}

.how-col-label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.how-old .how-col-label { color: var(--fg-dim); }
.how-new .how-col-label { color: var(--accent-bright); }

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

.how-col li {
  font-size: 0.95rem;
  padding-left: 20px;
  position: relative;
}

.how-old li {
  color: var(--fg-dim);
}

.how-old li::before {
  content: '\2013';
  position: absolute;
  left: 0;
  color: var(--fg-dim);
}

.how-new li {
  color: var(--fg);
}

.how-new li::before {
  content: '\2714';
  position: absolute;
  left: 0;
  color: var(--green);
  font-size: 0.85rem;
}

/* --- CLOSING --- */
.closing {
  padding: 120px 24px;
  text-align: center;
}

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

.closing h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: #fff;
  margin-bottom: 24px;
}

.closing-text {
  color: var(--fg-dim);
  font-size: 1.05rem;
  line-height: 1.75;
  margin-bottom: 32px;
}

.closing-vision {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--accent-bright);
  font-style: italic;
}

/* --- FOOTER --- */
.site-footer {
  padding: 48px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 4px;
}

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

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
  .problem-grid {
    grid-template-columns: 1fr 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .how-compare {
    grid-template-columns: 1fr;
  }
  .hero-stats {
    gap: 24px;
  }
}

@media (max-width: 480px) {
  .problem-grid {
    grid-template-columns: 1fr;
  }
  .hero {
    padding: 80px 20px 60px;
  }
}