:root {
  --bg: #07101c;
  --bg-soft: #0b1626;
  --panel: rgba(255, 255, 255, 0.04);
  --panel-strong: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.1);
  --white: #ffffff;
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.68);
  --muted-2: rgba(255, 255, 255, 0.54);
  --primary: #4a6cf7;
  --primary-2: #7c9cff;
  --accent: #8ec5ff;
  --success: #8fe3be;
  --shadow-lg: 0 24px 80px rgba(0, 0, 0, 0.35);
  --radius: 24px;
  --radius-sm: 18px;
  --container: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background:
    radial-gradient(circle at top left, rgba(74, 108, 247, 0.22), transparent 30%),
    radial-gradient(circle at bottom right, rgba(124, 156, 255, 0.12), transparent 28%),
    linear-gradient(180deg, #07101c 0%, #091321 100%);
  color: var(--text);
  line-height: 1.6;
}

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

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

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(7, 16, 28, 0.78);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.simple-header {
  background: rgba(7, 16, 28, 0.88);
}

.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.simple-nav {
  justify-content: center;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.brand-logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
  display: block;
}

/* Hero Section */
.simple-hero {
  padding: 100px 0 40px;
}

.simple-hero-inner {
  max-width: 900px;
  text-align: center;
}

.simple-hero h1 {
  font-size: clamp(36px, 5vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.04em;
  font-weight: 800;
}

.simple-hero p {
  margin: 18px auto 0;
  max-width: 720px;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.8;
}

/* Video Section */
.video-section {
  padding: 0 0 24px;
}

.video-card {
  border-radius: 28px;
  overflow: hidden;
}

.video-card video {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 28px;
}

/* Contact Section */
.contact-section {
  padding: 24px 0 90px;
}

.form-card {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.03));
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 30px;
}

.centered-form {
  max-width: 860px;
  margin: 0 auto;
}

.centered-form h2 {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.centered-form p {
  margin-bottom: 10px;
  color: var(--muted);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.field,
.field-full {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.field-full {
  grid-column: 1 / -1;
}

label {
  color: var(--white);
  font-size: 14px;
  font-weight: 600;
}

.checkbox-wrap {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.5;
}

.checkbox-wrap input {
  margin-top: 4px;
  width: auto;
}

.checkbox-wrap span {
  font-size: 14px;
  color: var(--muted);
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(255,255,255,0.04);
  color: var(--white);
  padding: 15px 16px;
  font: inherit;
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}

input::placeholder,
textarea::placeholder {
  color: rgba(255,255,255,0.34);
}

input:focus,
textarea:focus {
  border-color: rgba(124, 156, 255, 0.45);
  background: rgba(255,255,255,0.06);
}

textarea {
  resize: vertical;
  min-height: 140px;
}

/* Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 16px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 700;
  transition: 0.25s ease;
  cursor: pointer;
}

.btn-primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  box-shadow: 0 18px 40px rgba(74, 108, 247, 0.28);
  width: 100%;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 46px rgba(74, 108, 247, 0.36);
}

/* Footer */
.site-footer {
  padding: 28px 0 42px;
  color: var(--muted-2);
  font-size: 14px;
}

.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-row .nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
}

.footer-row .nav-links a {
  color: var(--muted-2);
  transition: color 0.2s ease;
}

.footer-row .nav-links a:hover {
  color: var(--white);
}

/* Responsive */
@media (max-width: 820px) {
  .simple-hero {
    padding: 72px 0 24px;
  }

  .simple-hero h1 {
    font-size: 38px;
  }

  .simple-hero p {
    font-size: 17px;
  }

  .contact-section {
    padding-bottom: 72px;
  }

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

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

  .footer-row .nav-links {
    flex-wrap: wrap;
    gap: 14px;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(calc(100% - 24px), var(--container));
  }

  .centered-form h2 {
    font-size: 30px;
  }

  .form-card {
    padding: 22px;
    border-radius: 20px;
  }

  .simple-hero h1 {
    font-size: 32px;
  }
}