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

:root {
  --color1: #111217;
  --color2: #181b1f;
  --color3: #22252b;
  --color4: #2c2f35;
  --color5: #383b42;
  --color6: #44474e;
  --color7: #5f6268;
  --color8: #7d8085;
  --color9: #9c9fa3;
  --color10: #babcbe;
  --color11: #e1e2e3;
  --color12: #fbfbfb;
  --accent: #3d71d9;
  --accent1: #1a2a4a;
  --success: #4ade80;
}

body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  color: var(--color12);
  line-height: 1.6;
  background: var(--color1);
}

a {
  color: var(--color10);
  text-decoration: none;
}

/* Nav */
.nav {
  border-bottom: 1px solid var(--color4);
  padding: 16px 0;
  background: var(--color1);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--color12);
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-img {
  width: 32px;
  height: 32px;
}

.nav-links {
  display: flex;
  gap: 24px;
}

.nav-links a {
  font-size: 14px;
  color: var(--color8);
  font-weight: 500;
}

/* Section headers */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--color12);
  margin-bottom: 8px;
}

.section-header p {
  font-size: 15px;
  color: var(--color8);
}

/* Hero */
.hero {
  max-width: 960px;
  margin: 0 auto;
  padding: 80px 24px 48px;
  text-align: center;
}

.hero-visual {
  display: flex;
  justify-content: center;
  margin-bottom: 40px;
}

.hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: 17px;
  color: var(--color9);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

.hero-badges {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--color3);
  border: 1px solid var(--color5);
  border-radius: 100px;
  font-size: 13px;
  color: var(--color10);
  font-weight: 500;
}

.badge svg {
  flex-shrink: 0;
}

.store-badges {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.store-badge {
  display: inline-block;
  line-height: 0;
}

.store-badge img {
  height: 44px;
  width: auto;
  display: block;
}

@media (hover: hover) {
  .store-badge {
    transition: opacity 0.2s;
  }

  .store-badge:hover {
    opacity: 0.85;
  }
}

/* Features */
.features {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.feature {
  padding: 24px;
  border: 1px solid var(--color4);
  border-radius: 12px;
  background: var(--color2);
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.feature h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.feature p {
  font-size: 14px;
  color: var(--color9);
  line-height: 1.65;
}

/* Architecture */
.architecture {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.arch-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  background: var(--color2);
  border: 1px solid var(--color4);
  border-radius: 16px;
  flex-wrap: wrap;
}

.arch-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  min-width: 120px;
}

.arch-node-box {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.arch-node-box.phone,
.arch-node-box.backend {
  background: var(--color3);
  border: 1px solid var(--color5);
}

.arch-node-box.grafana {
  background: var(--accent1);
  border: 1px solid var(--accent);
}

.arch-node-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color10);
}

.arch-node-sub {
  font-size: 11px;
  color: var(--color8);
  text-align: center;
  max-width: 120px;
}

.arch-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0 16px;
}

.arch-connector-line {
  width: 60px;
  height: 2px;
  background: var(--color4);
  position: relative;
}

.arch-connector-line::after {
  content: "";
  position: absolute;
  right: -3px;
  top: -3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.6;
}

.arch-connector-label {
  font-size: 11px;
  color: var(--color8);
  white-space: nowrap;
}

/* Plans */
.plans {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.plan-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
}

.plan-card {
  border: 1px solid var(--color4);
  border-radius: 12px;
  padding: 32px;
  background: var(--color2);
}

.plan-card-pro {
  border: 2px solid var(--accent);
  position: relative;
}

.plan-card-pro::before {
  content: attr(data-label);
  position: absolute;
  top: -10px;
  left: 24px;
  background: var(--accent);
  color: var(--color12);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 100px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.plan-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
}

.plan-price {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 4px;
}

.plan-price span {
  font-size: 14px;
  font-weight: 500;
  color: var(--color8);
}

.plan-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--color4);
}

.plan-card li {
  font-size: 14px;
  color: var(--color10);
  display: flex;
  align-items: center;
  gap: 10px;
}

.plan-card li::before {
  content: "";
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(74, 222, 128, 0.12);
  flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%234ade80' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 10px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--color4);
  padding: 40px 0;
  background: var(--color2);
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}

.footer-inner p {
  font-size: 13px;
  color: var(--color7);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin: 12px 0;
}

.footer-links a {
  font-size: 13px;
  color: var(--color8);
  font-weight: 500;
}

.footer-email {
  margin-top: 8px;
  font-size: 13px;
  color: var(--color8);
}

/* Legal pages */
.legal {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.legal h1 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
}

.legal .updated {
  font-size: 14px;
  color: var(--color8);
  margin-bottom: 32px;
}

.legal h2 {
  font-size: 18px;
  font-weight: 700;
  margin-top: 28px;
  margin-bottom: 8px;
  color: var(--color11);
}

.legal p {
  font-size: 15px;
  color: var(--color9);
  line-height: 1.7;
  margin-bottom: 8px;
}

/* Support page */
.support-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}

.support-page h1 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 16px;
}

.support-page p {
  font-size: 16px;
  color: var(--color9);
  line-height: 1.6;
  margin-bottom: 24px;
}

.support-email {
  display: inline-block;
  font-size: 16px;
  font-weight: 600;
  color: var(--color12);
  padding: 14px 32px;
  border: 2px solid var(--accent);
  border-radius: 10px;
  background: var(--accent1);
}

@media (hover: hover) {
  a:hover {
    color: var(--color12);
  }

  .nav-links a:hover {
    color: var(--color12);
  }

  .feature {
    transition:
      border-color 0.2s,
      background 0.2s;
  }

  .feature:hover {
    border-color: var(--color5);
    background: var(--color3);
  }

  .plan-card {
    transition: border-color 0.2s;
  }

  .plan-card:hover {
    border-color: var(--color5);
  }

  .support-email {
    transition: background 0.2s;
  }

  .support-email:hover {
    background: var(--accent);
  }

  .footer-links a:hover {
    color: var(--color12);
  }
}

/* Responsive */
@media (max-width: 640px) {
  .hero {
    padding: 48px 24px 32px;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero-sub {
    font-size: 15px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .plan-cards {
    grid-template-columns: 1fr;
  }

  .arch-diagram {
    flex-direction: column;
    gap: 16px;
    padding: 32px 16px;
  }

  .arch-connector {
    transform: rotate(90deg);
    padding: 8px 0;
  }

  .hero-badges {
    gap: 8px;
  }

  .badge {
    font-size: 12px;
    padding: 6px 12px;
  }
}