/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0a0d14;
  --bg-alt:    #0d1117;
  --teal:      #00c3be;
  --teal-dim:  rgba(0, 195, 190, 0.15);
  --amber:     #f5a623;
  --amber-dim: rgba(245, 166, 35, 0.15);
  --text:     #e8ecf0;
  --text-muted: rgba(232, 236, 240, 0.55);
  --border:   rgba(0, 195, 190, 0.12);
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3 { font-family: 'Sora', sans-serif; font-weight: 700; line-height: 1.2; }

/* ===== NAV ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10, 13, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1140px; margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-family: 'Sora', sans-serif; font-size: 1.25rem; font-weight: 800;
  letter-spacing: -0.02em; color: var(--text);
}
.logo-accent { color: var(--teal); }
.nav-tagline {
  font-size: 0.8rem; color: var(--text-muted); letter-spacing: 0.02em;
}

/* ===== HERO ===== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-grid {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  opacity: 0.7;
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero-orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,195,190,0.12) 0%, transparent 70%);
  top: -100px; left: -100px;
}
.hero-orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(245,166,35,0.08) 0%, transparent 70%);
  bottom: -50px; right: -80px;
}
.hero-content {
  position: relative; max-width: 1140px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 420px; gap: 60px;
  align-items: center; width: 100%;
}
.hero-badge {
  display: inline-block;
  font-size: 0.7rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--teal);
  border: 1px solid rgba(0,195,190,0.35);
  background: var(--teal-dim);
  padding: 5px 12px; border-radius: 20px;
  margin-bottom: 28px;
}
.hero-headline {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin-bottom: 24px;
  color: #ffffff;
}
.hero-lede {
  font-size: 1.1rem; color: rgba(232,236,240,0.75);
  max-width: 520px; margin-bottom: 16px;
}
.hero-sub {
  font-size: 0.9rem; color: var(--text-muted); font-style: italic;
}
.hero-visual {
  display: flex; align-items: center; justify-content: center;
}
.node-diagram {
  width: 100%; max-width: 320px;
  opacity: 0.85;
}
.node-diagram svg { width: 100%; height: auto; }

/* ===== STATS ROW ===== */
.stats-row {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 48px 24px;
}
.stats-inner {
  max-width: 1140px; margin: 0 auto;
  display: flex; align-items: center; justify-content: center; gap: 0;
}
.stat-item {
  flex: 1; text-align: center; padding: 0 40px;
}
.stat-number {
  display: block;
  font-family: 'Sora', sans-serif;
  font-size: 2.4rem; font-weight: 800;
  color: var(--teal);
  letter-spacing: -0.03em;
  margin-bottom: 6px;
}
.stat-label {
  font-size: 0.82rem; color: var(--text-muted); line-height: 1.4;
}
.stat-divider {
  width: 1px; height: 50px;
  background: var(--border);
  flex-shrink: 0;
}

/* ===== SHARED SECTION STYLES ===== */
.section-label {
  font-size: 0.7rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 16px;
}
.section-headline {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700; letter-spacing: -0.02em;
  margin-bottom: 20px; color: #ffffff;
}
.section-body {
  font-size: 1rem; color: var(--text-muted); max-width: 560px;
  line-height: 1.7;
}

/* ===== PROBLEM ===== */
.problem { padding: 100px 24px; }
.problem-inner { max-width: 1140px; margin: 0 auto; }
.problem-list {
  margin-top: 56px;
  display: flex; flex-direction: column; gap: 0;
  border: 1px solid var(--border);
  border-radius: 16px; overflow: hidden;
}
.problem-item {
  display: flex; gap: 20px; align-items: flex-start;
  padding: 28px 32px;
  border-bottom: 1px solid var(--border);
  background: rgba(13,17,23,0.5);
}
.problem-item:last-child { border-bottom: none; }
.problem-icon {
  flex-shrink: 0;
  width: 40px; height: 40px;
  background: var(--teal-dim);
  border: 1px solid rgba(0,195,190,0.2);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--teal);
}
.problem-item strong { display: block; font-size: 0.95rem; font-weight: 600; margin-bottom: 6px; color: var(--text); }
.problem-item p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.55; }

/* ===== HOW IT WORKS ===== */
.howitworks {
  background: var(--bg-alt);
  padding: 100px 24px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.howitworks-inner { max-width: 1140px; margin: 0 auto; }
.process-steps {
  margin-top: 64px;
  display: grid; grid-template-columns: auto 1fr auto 1fr auto 1fr;
  align-items: start; gap: 0;
  column-gap: 24px;
}
.process-step { flex: 1; }
.step-number {
  font-family: 'Sora', sans-serif;
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.1em;
  color: var(--teal); margin-bottom: 12px;
}
.step-content h3 {
  font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; color: #ffffff;
}
.step-content p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.65; }
.process-arrow {
  display: flex; align-items: center; padding-top: 24px;
  flex-shrink: 0;
}

/* ===== DIFFERENT ===== */
.different { padding: 100px 24px; }
.different-inner { max-width: 1140px; margin: 0 auto; }
.different-grid {
  margin-top: 56px;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: 16px; overflow: hidden;
}
.different-card {
  background: rgba(13,17,23,0.6);
  padding: 40px 36px;
  position: relative;
  overflow: hidden;
  transition: background 0.2s;
}
.different-card:hover { background: rgba(13,17,23,0.9); }
.diff-accent {
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
}
.diff-accent-teal { background: linear-gradient(90deg, var(--teal), transparent); }
.diff-accent-amber { background: linear-gradient(90deg, var(--amber), transparent); }
.different-card h3 {
  font-size: 1.05rem; font-weight: 700; margin-bottom: 12px; color: #ffffff;
}
.different-card p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.65; }

/* ===== CLOSING ===== */
.closing { padding: 100px 24px 120px; }
.closing-inner { max-width: 800px; margin: 0 auto; text-align: center; }
.closing-rule {
  width: 40px; height: 3px;
  background: linear-gradient(90deg, var(--teal), var(--amber));
  border-radius: 2px;
  margin: 0 auto 48px;
}
.closing-statement {
  font-family: 'Sora', sans-serif;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.4;
  color: #ffffff;
  margin-bottom: 20px;
}
.closing-sub {
  font-size: 0.95rem; color: var(--text-muted); font-style: italic;
}

/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 24px;
  text-align: center;
}
.footer-inner { max-width: 1140px; margin: 0 auto; }
.footer-logo {
  font-family: 'Sora', sans-serif; font-size: 1.2rem; font-weight: 800;
  color: var(--text); margin-bottom: 10px;
}
.footer-tagline { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 24px; }
.footer-copy { font-size: 0.75rem; color: rgba(232,236,240,0.3); }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .hero-content { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .stats-inner { flex-direction: column; gap: 32px; }
  .stat-divider { display: none; }
  .process-steps { grid-template-columns: 1fr; gap: 40px; }
  .process-arrow { display: none; }
  .different-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .hero { padding: 100px 20px 60px; }
  .problem-item { padding: 22px 20px; }
  .different-card { padding: 28px 24px; }
  .nav-tagline { display: none; }
}