:root {
  --bg: #07111f;
  --bg-2: #0b1630;
  --panel: rgba(16, 27, 46, 0.92);
  --panel-strong: #101b2e;
  --text: #eaf1ff;
  --muted: #9fb1d1;
  --accent: #7cc7ff;
  --accent2: #8ef0b5;
  --accent3: #ffd166;
  --border: rgba(124, 199, 255, 0.18);
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(180deg, var(--bg), var(--bg-2));
  color: var(--text);
  line-height: 1.6;
}

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

a:hover,
a:focus {
  text-decoration: underline;
}

img {
  max-width: 100%;
}

.site-header {
  background: radial-gradient(circle at top, #15335c, #08101c 70%);
  color: #fff;
  padding: 1rem 1rem 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.75rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #fff;
}

.header-logo {
  width: 88px;
  height: 88px;
  object-fit: contain;
  display: block;
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1rem;
  padding: 0.35rem 0;
}

.nav-row a {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: 0.45rem 0.2rem;
  border-bottom: 2px solid transparent;
}

.nav-row a:hover,
.nav-row a:focus {
  border-bottom-color: var(--accent);
  outline: none;
}

.nav-primary {
  margin-bottom: 0.25rem;
}

.nav-secondary {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 0.5rem;
}

main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px 16px 60px;
}

.hero {
  padding: 56px 20px;
  text-align: center;
}

.hero .logo,
.hero-logo {
  width: 88px;
  height: 88px;
  object-fit: contain;
  margin-bottom: 12px;
}

.tagline {
  max-width: 760px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 1.1rem;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 22px;
  margin: 18px 0;
  box-shadow: var(--shadow);
}

.grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 20px;
  align-items: center;
}

.feature-image,
.media-block {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.feature-image {
  display: block;
}

.media-block {
  margin-top: 14px;
  background: #000;
}

ul {
  padding-left: 18px;
}

li,
p {
  color: var(--muted);
}

h1,
h2 {
  margin-top: 0;
}

.footer {
  text-align: center;
  padding: 20px;
  color: var(--muted);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.01);
}

@media (max-width: 720px) {
  .hero {
    padding: 44px 16px;
  }

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

  .nav-row {
    gap: 0.4rem 0.8rem;
  }

  .brand {
    gap: 0.55rem;
  }

  .header-logo,
  .hero .logo,
  .hero-logo {
    width: 72px;
    height: 72px;
  }

  .brand-name {
    font-size: 1.15rem;
  }
}

.contact-form {
  display: grid;
  gap: 0.9rem;
  margin-top: 1rem;
}

.contact-form label {
  font-weight: 600;
  color: var(--text);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.95rem 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font: inherit;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(234, 241, 255, 0.55);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 3px solid rgba(124, 199, 255, 0.18);
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.06);
}

.contact-form textarea {
  resize: vertical;
  min-height: 170px;
}

.checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.4;
}

.checkbox input {
  width: 1rem;
  height: 1rem;
  margin-top: 0.25rem;
  flex: 0 0 auto;
  accent-color: var(--accent);
}

.contact-form button {
  width: fit-content;
  border: none;
  border-radius: 12px;
  padding: 0.95rem 1.35rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #08101c;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(124, 199, 255, 0.18);
  transition: transform 0.15s ease, filter 0.15s ease;
}

.contact-form button:hover {
  transform: translateY(-1px);
  filter: brightness(1.03);
}

.contact-form button:focus {
  outline: 3px solid rgba(142, 240, 181, 0.28);
  outline-offset: 2px;
}