:root {
  --bg-dark: #0a0a0f;
  --bg-section: #101018;
  --bg-card: #16161f;
  --fg: #e8e6e1;
  --fg-muted: #9b978f;
  --accent: #e8873a;
  --accent-glow: rgba(232, 135, 58, 0.15);
  --accent-warm: #d46a2e;
  --border: rgba(255,255,255,0.06);
  --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-dark);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 6rem 2rem;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at 30% 50%, rgba(232,135,58,0.06) 0%, transparent 60%);
}

.hero-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
  width: 100%;
}

.hero-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  border: 1px solid rgba(232,135,58,0.3);
  padding: 0.4rem 1rem;
  border-radius: 2rem;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.8rem, 5.5vw, 4.5rem);
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--fg) 0%, var(--fg-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lede {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 520px;
  line-height: 1.7;
}

.hero-visual {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.signal-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(232,135,58,0.15);
}

.ring-1 {
  width: 60%;
  height: 60%;
  animation: pulse 3s ease-in-out infinite;
}

.ring-2 {
  width: 78%;
  height: 78%;
  animation: pulse 3s ease-in-out 0.6s infinite;
}

.ring-3 {
  width: 96%;
  height: 96%;
  animation: pulse 3s ease-in-out 1.2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.04); }
}

.signal-icon {
  font-size: 3rem;
  color: var(--accent);
  z-index: 2;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border-radius: 50%;
  border: 2px solid rgba(232,135,58,0.3);
}

/* ===== PROBLEM ===== */
.problem {
  padding: 7rem 2rem;
  background: var(--bg-section);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.problem-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 3.5rem;
  text-align: center;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  text-align: center;
}

.problem-number {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.8rem;
  letter-spacing: -0.03em;
}

.problem-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.problem-caption {
  text-align: center;
  color: var(--fg-muted);
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* ===== HOW ===== */
.how {
  padding: 7rem 2rem;
}

.how-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.how h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 4rem;
  text-align: center;
}

.how-steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
}

.step {
  flex: 1;
  padding: 0 2rem;
}

.step-num {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.step h3 {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
}

.step p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.step-divider {
  width: 1px;
  min-height: 120px;
  background: linear-gradient(to bottom, transparent, var(--accent), transparent);
  align-self: stretch;
  flex-shrink: 0;
}

/* ===== NUMBERS / FEATURES ===== */
.numbers {
  padding: 7rem 2rem;
  background: var(--bg-section);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.numbers-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.numbers-text h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 1.5rem;
}

.numbers-text p {
  color: var(--fg-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.numbers-features {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.feature {
  display: grid;
  grid-template-columns: 40px 1fr;
  grid-template-rows: auto auto;
  column-gap: 1rem;
  row-gap: 0.3rem;
}

.feature-icon {
  grid-row: 1 / 3;
  font-size: 1.4rem;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--accent-glow);
  border-radius: 8px;
}

.feature h4 {
  font-size: 1.05rem;
  align-self: end;
}

.feature p {
  color: var(--fg-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ===== CLOSING ===== */
.closing {
  padding: 8rem 2rem;
  text-align: center;
  background: radial-gradient(ellipse at 50% 80%, rgba(232,135,58,0.08) 0%, transparent 60%);
}

.closing-inner {
  max-width: 700px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(2.2rem, 4.5vw, 3.2rem);
  margin-bottom: 1.5rem;
}

.closing-sub {
  color: var(--fg-muted);
  font-size: 1.15rem;
  line-height: 1.7;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--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-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero { padding: 4rem 1.5rem; min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; gap: 3rem; }
  .hero-visual { max-width: 280px; margin: 0 auto; }
  .problem { padding: 4rem 1.5rem; }
  .problem-grid { grid-template-columns: 1fr; gap: 1.2rem; }
  .problem-card { padding: 1.8rem 1.5rem; }
  .problem-number { font-size: 2.8rem; }
  .how { padding: 4rem 1.5rem; }
  .how-steps { flex-direction: column; gap: 2rem; }
  .step { padding: 0; }
  .step-divider { width: 40px; min-height: 1px; height: 1px; align-self: center; }
  .numbers { padding: 4rem 1.5rem; }
  .numbers-inner { grid-template-columns: 1fr; gap: 3rem; }
  .closing { padding: 5rem 1.5rem; }
  .footer-inner { flex-direction: column; gap: 0.5rem; text-align: center; }
}