:root {
  --bg: #08111f;
  --bg-soft: #0f1b2f;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-strong: #0d1728;
  --text: #f4f8ff;
  --muted: #a4b3cb;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #4dc3ff;
  --accent-2: #4de0b3;
  --button-text: #06101d;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.28);
  --radius: 28px;
  --radius-sm: 20px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(77, 195, 255, 0.14), transparent 30%),
    radial-gradient(circle at bottom right, rgba(77, 224, 179, 0.12), transparent 28%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 17, 31, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.brand-title {
  font-size: 20px;
  font-weight: 700;
}

.brand-subtitle,
.muted,
.section-heading p,
.hero-text,
.panel p,
.site-footer p,
.form-policy,
.small-note,
.mini-card span {
  color: var(--muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav a {
  padding: 11px 16px;
  border-radius: 999px;
  transition: 0.2s ease;
}

.nav a:hover,
.nav a.active {
  background: rgba(255, 255, 255, 0.08);
}

.nav-button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 24px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), #81d4ff);
  color: var(--button-text);
  font-weight: 700;
  box-shadow: var(--shadow);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border-radius: 14px;
  width: 46px;
  height: 46px;
  cursor: pointer;
}

.hero,
.section,
.page-main {
  padding: 72px 0;
}

.section-tight {
  padding-top: 0;
}

.hero-grid,
.split-grid,
.contact-grid,
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: start;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 18px;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  color: #dcecff;
  font-size: 14px;
}

h1,
h2,
h3 {
  margin: 0 0 16px;
  line-height: 1.15;
}

h1 {
  font-size: clamp(38px, 5vw, 64px);
  max-width: 760px;
}

h2 {
  font-size: clamp(28px, 3vw, 40px);
}

h3 {
  font-size: 24px;
}

.hero-text {
  max-width: 720px;
  font-size: 19px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0;
}

.stats-grid,
.cards-grid {
  display: grid;
  gap: 18px;
}

.stats-grid {
  grid-template-columns: repeat(3, 1fr);
}

.four-cols {
  grid-template-columns: repeat(4, 1fr);
}

.three-cols {
  grid-template-columns: repeat(3, 1fr);
}

.two-cols {
  grid-template-columns: repeat(2, 1fr);
}

.stat-card,
.panel,
.mini-card {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.stat-card {
  padding: 20px;
}

.stat-card strong {
  display: block;
  font-size: 28px;
  margin-bottom: 6px;
}

.panel {
  padding: 30px;
}

.feature-panel {
  min-height: 100%;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.panel-icon,
.card-icon,
.info-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  border-radius: 18px;
  background: rgba(77, 195, 255, 0.12);
  color: #9ee1ff;
  font-weight: 700;
  font-size: 24px;
}

.check-list,
.service-list,
.steps-list {
  margin: 0;
  padding: 0;
}

.check-item,
.service-list li,
.steps-list li {
  list-style: none;
  margin-bottom: 14px;
  padding: 16px 18px 16px 48px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(5, 11, 20, 0.38);
  position: relative;
}

.check-item::before,
.service-list li::before,
.steps-list li::before {
  content: "✓";
  position: absolute;
  left: 18px;
  top: 14px;
  color: var(--accent-2);
  font-weight: 700;
}

.steps-list {
  counter-reset: steps;
  margin: 26px 0 30px;
}

.steps-list li {
  padding-left: 56px;
}

.steps-list li::before {
  content: counter(steps);
  counter-increment: steps;
  width: 28px;
  height: 28px;
  line-height: 28px;
  text-align: center;
  border-radius: 50%;
  background: #fff;
  color: #07111f;
  top: 12px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-heading.narrow {
  max-width: 700px;
}

.section-heading.left {
  margin-bottom: 18px;
}

.card h3 {
  margin-top: 18px;
}

.compact-grid .mini-card {
  padding: 18px;
}

.mini-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.dark-panel {
  background: var(--panel-strong);
}

.accent-panel {
  background: linear-gradient(135deg, rgba(77, 195, 255, 0.12), rgba(77, 224, 179, 0.12));
}

.pricing-card {
  display: flex;
  flex-direction: column;
}

.price {
  margin-bottom: 22px;
  color: #9fe0ff;
  font-size: 34px;
  font-weight: 700;
}

.note-panel {
  margin-top: 28px;
}

.stack-grid {
  display: grid;
  gap: 24px;
}

.info-box {
  display: grid;
  gap: 18px;
}

.info-row {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-form {
  display: grid;
  gap: 18px;
}

.contact-form label {
  display: grid;
  gap: 8px;
}

.contact-form span {
  color: #dcecff;
  font-size: 14px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border-radius: 18px;
  padding: 15px 16px;
  font: inherit;
  outline: none;
}

input:focus,
textarea:focus {
  border-color: rgba(129, 212, 255, 0.7);
  box-shadow: 0 0 0 3px rgba(77, 195, 255, 0.16);
}

textarea {
  min-height: 150px;
  resize: vertical;
}

.form-message {
  display: none;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid rgba(77, 224, 179, 0.28);
  background: rgba(77, 224, 179, 0.12);
}

.form-message.error {
  display: block;
  border-color: rgba(255, 124, 124, 0.28);
  background: rgba(255, 124, 124, 0.12);
}

.form-message.success {
  display: block;
}

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 24px;
}

.footer-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.footer-links a {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
}

@media (max-width: 1024px) {
  .hero-grid,
  .split-grid,
  .contact-grid,
  .about-grid,
  .four-cols,
  .three-cols {
    grid-template-columns: 1fr 1fr;
  }

  .four-cols {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 820px) {
  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .header-inner {
    flex-wrap: wrap;
  }

  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding-top: 8px;
  }

  .nav.open {
    display: flex;
  }

  .nav a,
  .nav-button {
    width: 100%;
    text-align: center;
  }

  .hero,
  .section,
  .page-main {
    padding: 52px 0;
  }

  .hero-grid,
  .split-grid,
  .contact-grid,
  .about-grid,
  .stats-grid,
  .four-cols,
  .three-cols,
  .two-cols,
  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(var(--container), calc(100% - 20px));
  }

  .panel,
  .stat-card,
  .mini-card {
    padding: 22px;
  }

  h1 {
    font-size: 34px;
  }

  h2 {
    font-size: 28px;
  }
}