:root {
  --bg-primary: #0B1A2E;
  --bg-secondary: #0F2240;
  --bg-card: #132B4D;
  --bg-card-alt: #0D2035;
  --fg-primary: #E4EAF2;
  --fg-secondary: #8FA3BE;
  --fg-muted: #5A7191;
  --accent: #00D4AA;
  --accent-glow: rgba(0, 212, 170, 0.15);
  --accent-warm: #FF7A45;
  --border: rgba(255, 255, 255, 0.06);
  --radius: 12px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;
}

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

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Hero ── */
.hero {
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 10vw 80px;
  position: relative;
  background:
    radial-gradient(ellipse 60% 50% at 20% 40%, rgba(0, 212, 170, 0.06) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 80% 60%, rgba(255, 122, 69, 0.04) 0%, transparent 70%),
    var(--bg-primary);
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 170, 0.2);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 32px;
  width: fit-content;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--fg-primary);
  margin-bottom: 28px;
  max-width: 750px;
}

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

.lede {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: var(--fg-secondary);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 40px;
  font-weight: 300;
}

.hero-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.tag {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--fg-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 100px;
  letter-spacing: 0.02em;
}

/* ── Problem Section ── */
.problem {
  padding: 100px 10vw;
  background: var(--bg-secondary);
}

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

.problem-label,
.section-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}

.problem h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--fg-primary);
  margin-bottom: 48px;
}

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

.problem-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
}

.problem-card.new {
  border-color: rgba(0, 212, 170, 0.2);
  background: linear-gradient(135deg, var(--bg-primary), rgba(0, 212, 170, 0.03));
}

.card-label {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.problem-card.old .card-label { color: var(--fg-muted); }
.problem-card.new .card-label { color: var(--accent); }

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

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

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

.problem-card.new li {
  color: var(--fg-secondary);
  font-size: 0.95rem;
  padding-left: 20px;
  position: relative;
}

.problem-card.new li::before {
  content: '\2714';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.8rem;
}

/* ── Features ── */
.features {
  padding: 100px 10vw;
  background: var(--bg-primary);
}

.features-header {
  margin-bottom: 56px;
  max-width: 600px;
}

.features-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--fg-primary);
}

.feature-blocks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

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

.feature-block:hover {
  border-color: rgba(0, 212, 170, 0.15);
}

.feature-icon {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 20px;
  line-height: 1;
}

.feature-block h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--fg-primary);
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.feature-block p {
  font-size: 0.9rem;
  color: var(--fg-secondary);
  line-height: 1.65;
  font-weight: 300;
}

/* ── Metrics ── */
.metrics {
  padding: 100px 10vw;
  background: var(--bg-secondary);
}

.metrics-inner {
  max-width: 1000px;
}

.metrics-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--fg-primary);
  margin-bottom: 48px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.metric {
  text-align: left;
  padding: 32px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.metric-value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 2.8rem);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 8px;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--fg-muted);
  font-weight: 400;
}

/* ── Closing ── */
.closing {
  padding: 120px 10vw;
  background:
    radial-gradient(ellipse 50% 50% at 70% 50%, rgba(0, 212, 170, 0.05) 0%, transparent 70%),
    var(--bg-primary);
  text-align: center;
  display: flex;
  justify-content: center;
}

.closing-inner {
  max-width: 720px;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--fg-primary);
  margin-bottom: 28px;
}

.closing h2 .accent {
  color: var(--accent);
}

.closing-text {
  font-size: 1.05rem;
  color: var(--fg-secondary);
  line-height: 1.75;
  font-weight: 300;
}

/* ── Footer ── */
.site-footer {
  padding: 48px 10vw;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg-primary);
  letter-spacing: 0.05em;
}

.footer-sub {
  font-size: 0.82rem;
  color: var(--fg-muted);
  margin-top: 4px;
}

.footer-line {
  width: 40px;
  height: 1px;
  background: var(--border);
  margin: 24px auto;
}

.footer-meta {
  font-size: 0.75rem;
  color: var(--fg-muted);
  letter-spacing: 0.05em;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .hero { padding: 80px 6vw 60px; min-height: 70vh; }
  .problem { padding: 60px 6vw; }
  .features { padding: 60px 6vw; }
  .metrics { padding: 60px 6vw; }
  .closing { padding: 80px 6vw; }
  .site-footer { padding: 36px 6vw; }

  .problem-grid { grid-template-columns: 1fr; }
  .feature-blocks { grid-template-columns: 1fr 1fr; }
  .metrics-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .hero { padding: 60px 5vw 48px; }
  .feature-blocks { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: 1fr 1fr; }
  .hero-tags { gap: 8px; }
  .tag { font-size: 0.72rem; padding: 6px 12px; }
}