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

:root {
  --blue: #2563EB;
  --blue-dark: #1D4ED8;
  --blue-light: #EFF6FF;
  --blue-glow: rgba(37,99,235,0.15);
  --dark: #0F172A;
  --text: #0F172A;
  --text-secondary: #475569;
  --text-tertiary: #94A3B8;
  --border: #E2E8F0;
  --bg: #F8FAFC;
  --surface: #FFFFFF;
  --green: #10B981;
  --red: #EF4444;
  --amber: #F59E0B;
  --purple: #8B5CF6;
  --teal: #0D9488;
  --radius: 16px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.fade-up { animation: fadeUp 0.6s ease-out; }

/* NAV */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226,232,240,0.5);
  transition: background 0.3s;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-size: 22px;
  font-weight: 800;
  text-decoration: none;
  color: var(--dark);
  letter-spacing: -0.5px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
  position: relative;
}
.nav-links a:not(.btn):hover { color: var(--blue); }
.nav-links a:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blue);
  transition: width 0.2s;
}
.nav-links a:not(.btn):hover::after { width: 100%; }

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  border-radius: 50px;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}
.btn-sm { font-size: 13px; padding: 8px 20px; }
.btn-md { font-size: 14px; padding: 12px 28px; }
.btn-lg { font-size: 15px; padding: 14px 36px; }
.btn-primary {
  background: var(--blue);
  color: #FFFFFF !important;
  box-shadow: 0 4px 12px var(--blue-glow);
}
.btn-primary:hover {
  background: var(--blue-dark);
  box-shadow: 0 6px 20px rgba(37,99,235,0.25);
  transform: translateY(-1px);
}
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-light);
}
.btn-white {
  background: white;
  color: var(--blue) !important;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.btn-white:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}
.btn-arrow::after { content: '→'; margin-left: 4px; transition: margin-left 0.2s; }
.btn-arrow:hover::after { margin-left: 8px; }

/* BADGE */
.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--blue);
  background: var(--blue-light);
  padding: 5px 16px;
  border-radius: 50px;
  letter-spacing: 0.3px;
  margin-bottom: 16px;
}

/* PILL */
.pill {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: white;
  padding: 6px 16px;
  border-radius: 50px;
  border: 1px solid var(--border);
  transition: all 0.2s;
}
.pill:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-light);
  transform: translateY(-2px);
}

/* HERO */
.hero {
  padding: 160px 32px 100px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--blue-glow) 0%, transparent 70%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139,92,246,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 80px;
  position: relative;
}
.hero-content { flex: 1; animation: fadeUp 0.8s ease-out; }
.hero h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -2px;
  color: var(--dark);
  margin-bottom: 24px;
}
.hero h1 span { color: var(--blue); }
.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 500px;
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  margin-bottom: 40px;
}
.hero-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.hero-visual {
  flex: 0 0 400px;
  animation: fadeUp 1s ease-out 0.2s both;
}

/* HERO CARD */
.hero-card {
  background: white;
  border-radius: 20px;
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(0,0,0,0.07);
  overflow: hidden;
  animation: float 4s ease-in-out infinite;
}
.hc-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
}
.hc-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.hc-dot.green { background: var(--green); }
.hc-title { font-size: 14px; font-weight: 600; }
.hc-body { padding: 24px; }
.hc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--bg);
}
.hc-label { font-size: 13px; color: var(--text-tertiary); font-weight: 500; }
.hc-value { font-size: 13px; font-weight: 600; }
.hc-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 50px;
}
.hc-badge.green { background: rgba(16,185,129,0.1); color: var(--green); }
.hc-uuid {
  margin-top: 16px;
  font-size: 10px;
  color: var(--text-tertiary);
  font-family: 'SF Mono', 'Fira Code', monospace;
  background: var(--bg);
  padding: 8px 12px;
  border-radius: 8px;
}

/* SECTIONS */
.section { padding: 100px 32px; }
.section-alt { background: var(--bg); }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-header {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 56px;
}
.section-header h2 {
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -1.2px;
  margin-bottom: 16px;
  line-height: 1.15;
}
.section-header p {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* FEATURES GRID */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.feature-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: all 0.25s;
  cursor: default;
}
.feature-card:hover {
  border-color: var(--blue);
  box-shadow: 0 8px 24px var(--blue-glow);
  transform: translateY(-4px);
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  transition: transform 0.25s;
}
.feature-card:hover .feature-icon { transform: scale(1.1); }
.blue-bg { background: rgba(37,99,235,0.08); }
.green-bg { background: rgba(16,185,129,0.08); }
.purple-bg { background: rgba(139,92,246,0.08); }
.red-bg { background: rgba(239,68,68,0.08); }
.amber-bg { background: rgba(245,158,11,0.08); }
.teal-bg { background: rgba(13,148,136,0.08); }
.feature-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* TIPOS GRID */
.tipos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.tipo-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.25s;
}
.tipo-card:hover {
  border-color: var(--blue);
  box-shadow: 0 8px 24px var(--blue-glow);
  transform: translateY(-4px);
}
.tipo-coming { opacity: 0.6; }
.tipo-coming:hover { opacity: 0.8; }
.tipo-letter {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 18px;
  transition: transform 0.25s;
}
.tipo-card:hover .tipo-letter { transform: scale(1.1); }
.tipo-letter.blue { background: rgba(37,99,235,0.1); color: var(--blue); }
.tipo-letter.red { background: rgba(239,68,68,0.1); color: var(--red); }
.tipo-letter.green { background: rgba(16,185,129,0.1); color: var(--green); }
.tipo-letter.amber { background: rgba(245,158,11,0.1); color: var(--amber); }
.tipo-letter.gray { background: var(--bg); color: var(--text-tertiary); }
.tipo-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.tipo-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}
.tipo-card ul { list-style: none; padding: 0; }
.tipo-card li {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 5px 0 5px 18px;
  position: relative;
  line-height: 1.4;
}
.tipo-card li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  position: absolute;
  left: 0;
  top: 11px;
}
.coming-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--amber);
  background: rgba(245,158,11,0.1);
  padding: 3px 10px;
  border-radius: 50px;
  margin-left: 8px;
}

/* STEPS */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
}
.steps-grid::before {
  content: '';
  position: absolute;
  top: 24px;
  left: 60px;
  right: 60px;
  height: 2px;
  background: var(--border);
}
.step {
  text-align: center;
  position: relative;
}
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--blue);
  color: white;
  font-size: 18px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  position: relative;
  z-index: 1;
  transition: all 0.25s;
  box-shadow: 0 4px 12px var(--blue-glow);
}
.step:hover .step-num {
  transform: scale(1.15);
  box-shadow: 0 6px 20px rgba(37,99,235,0.3);
}
.step h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.step p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* SECURITY */
.security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.security-item {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all 0.25s;
}
.security-item:hover {
  border-color: var(--blue);
  transform: translateY(-2px);
}
.security-item strong { font-size: 15px; font-weight: 700; }
.security-item span { font-size: 13px; color: var(--text-secondary); line-height: 1.4; }

/* CTA */
.cta-section {
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 50%, #1E3A5F 100%);
  text-align: center;
  padding: 100px 32px;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
}
.cta-section h2 {
  font-size: 40px;
  font-weight: 800;
  color: white;
  margin-bottom: 16px;
  letter-spacing: -1px;
}
.cta-section p {
  font-size: 17px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 36px;
}

/* FOOTER */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.5);
  padding: 56px 32px 24px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 56px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-logo {
  font-size: 24px;
  font-weight: 800;
  color: white;
}
.footer-by {
  display: block;
  font-size: 12px;
  color: rgba(255,255,255,0.25);
  margin-top: 4px;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}
.footer-brand p { font-size: 13px; line-height: 1.6; }
.footer-links { display: flex; gap: 72px; }
.footer-col h4 {
  color: white;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,0.45);
  text-decoration: none;
  font-size: 13px;
  padding: 5px 0;
  transition: color 0.2s;
}
.footer-col a:hover { color: white; }
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 24px;
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,0.25);
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .hero-inner { flex-direction: column; text-align: center; gap: 40px; }
  .hero h1 { font-size: 38px; letter-spacing: -1px; }
  .hero-desc { margin: 0 auto 24px; }
  .hero-actions { justify-content: center; }
  .hero-pills { justify-content: center; }
  .hero-visual { flex: none; width: 320px; }
  .section { padding: 64px 20px; }
  .section-header h2 { font-size: 28px; }
  .features-grid { grid-template-columns: 1fr; }
  .tipos-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .steps-grid::before { display: none; }
  .security-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 32px; }
  .footer-links { flex-direction: column; gap: 32px; }
  .nav-links { display: none; }
}