:root {
  --primary: #0066ff;
  --primary-dark: #0052cc;
  --primary-light: #e8f0ff;
  --accent: #00c2ff;
  --text: #0f172a;
  --text-soft: #475569;
  --bg: #ffffff;
  --bg-alt: #f6f9fc;
  --border: #e2e8f0;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.12);
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

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

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.logo-mark {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 6px 16px rgba(0, 102, 255, 0.35);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-menu a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-soft);
  transition: color 0.2s ease;
}

.nav-menu a:hover {
  color: var(--text);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: 0.25s ease;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 10px 22px rgba(0, 102, 255, 0.28);
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-light {
  background: #fff;
  color: var(--primary);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

.hero {
  position: relative;
  padding: 170px 0 100px;
  overflow: hidden;
  background: linear-gradient(180deg, #f2f7ff 0%, #ffffff 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 300px at 85% 15%, rgba(0, 194, 255, 0.18), transparent 60%),
    radial-gradient(500px 320px at 10% 80%, rgba(0, 102, 255, 0.12), transparent 60%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 780px;
}

.hero-tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.035em;
  font-weight: 800;
  margin-bottom: 20px;
}

.highlight {
  background: linear-gradient(120deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-soft);
  max-width: 560px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 52px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 42px;
}

.stat strong {
  display: block;
  font-size: 1.85rem;
  letter-spacing: -0.03em;
  color: var(--text);
}

.stat span {
  color: var(--text-soft);
  font-size: 0.92rem;
}

.section {
  padding: 96px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-head {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.section-head h2,
.about-text h2 {
  font-size: clamp(1.9rem, 3.6vw, 2.6rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 14px;
}

.section-sub {
  color: var(--text-soft);
  font-size: 1.05rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: transparent;
}

.card-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 1.15rem;
  margin-bottom: 18px;
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.card p {
  color: var(--text-soft);
  font-size: 0.97rem;
}

.about {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

.about-text p {
  color: var(--text-soft);
  margin-bottom: 22px;
  font-size: 1.05rem;
}

.checklist {
  list-style: none;
  margin-bottom: 28px;
}

.checklist li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 12px;
  color: var(--text);
  font-weight: 500;
}

.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.72rem;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.about-visual {
  display: flex;
  justify-content: center;
}

.visual-card {
  width: 100%;
  max-width: 380px;
  background: #fff;
  border-radius: 18px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}

.visual-row {
  display: flex;
  gap: 7px;
  padding: 14px 18px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #cbd5e1;
}

.visual-body {
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.bar {
  height: 12px;
  border-radius: 8px;
  background: linear-gradient(90deg, var(--primary-light), #d9e8ff);
}

.bar.short {
  width: 62%;
}

.grid-mini {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 8px;
}

.grid-mini div {
  height: 68px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  opacity: 0.9;
}

.grid-mini div:nth-child(2) {
  opacity: 0.65;
}

.grid-mini div:nth-child(3) {
  opacity: 0.5;
}

.grid-mini div:nth-child(4) {
  opacity: 0.85;
}

.cta {
  background: linear-gradient(120deg, var(--primary) 0%, var(--primary-dark) 55%, #003d99 100%);
  color: #fff;
  text-align: center;
}

.cta-inner h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.cta-inner p {
  opacity: 0.9;
  margin-bottom: 28px;
  font-size: 1.08rem;
}

.contact-form {
  max-width: 720px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px;
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 13px 15px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.98rem;
  color: var(--text);
  background: #fff;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.12);
}

.form-msg {
  margin-top: 16px;
  color: #059669;
  font-weight: 600;
}

.footer {
  background: #0b1220;
  color: #cbd5e1;
  padding-top: 64px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer .logo {
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand p {
  max-width: 280px;
  font-size: 0.95rem;
  opacity: 0.8;
}

.footer-links h4 {
  color: #fff;
  margin-bottom: 16px;
  font-size: 1rem;
}

.footer-links a,
.footer-links span {
  display: block;
  margin-bottom: 10px;
  font-size: 0.94rem;
  opacity: 0.8;
  transition: opacity 0.2s ease;
}

.footer-links a:hover {
  opacity: 1;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  font-size: 0.88rem;
  opacity: 0.7;
}

@media (max-width: 860px) {
  .about {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 24px 22px;
    border-bottom: 1px solid var(--border);
    display: none;
    box-shadow: var(--shadow);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu li {
    width: 100%;
  }

  .nav-menu li a {
    display: block;
    padding: 12px 0;
  }

  .nav-menu .btn {
    width: 100%;
    margin-top: 8px;
  }

  .hero {
    padding: 130px 0 70px;
  }

  .hero-stats {
    gap: 26px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .section {
    padding: 72px 0;
  }
}