:root {
  --ga-primary: #0d4ea6;
  --ga-primary-dark: #08397d;
  --ga-primary-soft: #eaf2ff;
  --ga-accent: #5b43f2;
  --ga-accent-soft: #efebff;

  --text-main: #1f2937;
  --text-strong: #111827;
  --text-soft: #6b7280;

  --bg-page: #f7f8fa;
  --bg-card: #ffffff;
  --border: #e5e7eb;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text-main);
  background: var(--bg-page);
  line-height: 1.5;
}

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

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

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-badge {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--ga-primary), var(--ga-primary-dark));
  color: #ffffff;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 18px;
  box-shadow: 0 10px 24px rgba(13, 78, 166, 0.22);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text strong {
  font-size: 16px;
  color: var(--text-strong);
}

.brand-text span {
  font-size: 12px;
  color: var(--text-soft);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.main-nav a {
  font-size: 14px;
  font-weight: 600;
  color: #4b5563;
}

.main-nav a:hover {
  color: var(--ga-primary);
}

.hero {
  padding: 72px 0 56px;
  background:
    radial-gradient(circle at top left, rgba(13, 78, 166, 0.12), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #f7f8fa 100%);
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  margin: 0 0 12px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--ga-primary-soft);
  color: var(--ga-primary);
  font-size: 13px;
  font-weight: 700;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.05;
  color: var(--text-strong);
}

.hero-text {
  margin: 0 0 28px;
  font-size: 18px;
  color: #4b5563;
  max-width: 640px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 15px;
  transition: 0.2s ease;
  cursor: pointer;
}

.btn-primary {
  background: var(--ga-primary);
  color: #ffffff;
}

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

.btn-secondary {
  background: #ffffff;
  border-color: #cfd8e3;
  color: var(--text-strong);
}

.btn-secondary:hover {
  background: #f9fafb;
  border-color: var(--ga-primary);
}

.hero-note {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-soft);
  font-size: 14px;
}

.play-badge {
  display: inline-flex;
  align-items: center;
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--text-strong);
  color: #ffffff;
  font-size: 12px;
  font-weight: 700;
}

.hero-card {
  display: flex;
  justify-content: center;
}

.phone-mockup {
  width: min(320px, 100%);
  padding: 14px;
  border-radius: 34px;
  background: linear-gradient(180deg, #0f172a, #111827);
  box-shadow: 0 24px 70px rgba(17, 24, 39, 0.2);
}

.phone-screen {
  min-height: 580px;
  border-radius: 24px;
  background: linear-gradient(180deg, #ffffff, #f3f6fb);
  padding: 24px 18px;
}

.mockup-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--ga-primary);
  margin-bottom: 18px;
}

.mockup-line {
  height: 14px;
  width: 100%;
  border-radius: 999px;
  background: #dbe7f8;
  margin-bottom: 12px;
}

.mockup-line.short {
  width: 70%;
}

.mockup-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 26px;
}

.mockup-grid div {
  aspect-ratio: 1 / 1;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--ga-primary), var(--ga-accent));
}

.mockup-footer {
  height: 16px;
  width: 48%;
  margin-top: 26px;
  border-radius: 999px;
  background: #c9d8ef;
}

.modules,
.how-it-works,
.featured-videos,
.support-section {
  padding: 72px 0;
}

.section-head {
  margin-bottom: 28px;
}

.section-kicker {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ga-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.section-head h2 {
  margin: 0 0 10px;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.1;
  color: var(--text-strong);
}

.section-head p {
  margin: 0;
  max-width: 760px;
  color: var(--text-soft);
  font-size: 17px;
}

.modules-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.module-card {
  display: block;
  padding: 24px;
  border-radius: 22px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.04);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.module-card:hover {
  transform: translateY(-2px);
  border-color: var(--ga-primary);
  box-shadow: 0 14px 34px rgba(13, 78, 166, 0.12);
}

.module-icon {
  font-size: 28px;
  margin-bottom: 14px;
}

.module-card h3 {
  margin: 0 0 8px;
  font-size: 20px;
  color: var(--text-strong);
}

.module-card p {
  margin: 0;
  color: var(--text-soft);
  font-size: 15px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.step-card {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 22px;
}

.step-number {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--ga-primary-soft);
  color: var(--ga-primary);
  font-weight: 700;
}

.step-card h3 {
  margin: 0 0 8px;
  font-size: 19px;
  color: var(--text-strong);
}

.step-card p {
  margin: 0;
  color: var(--text-soft);
  font-size: 15px;
}

.video-list {
  display: grid;
  gap: 22px;
}

.video-card {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 18px;
  align-items: start;
  padding: 20px;
  border-radius: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.04);
}

.video-frame,
.video-placeholder {
  width: 100%;
  aspect-ratio: 9 / 16;
  border-radius: 18px;
  overflow: hidden;
  background: #111827;
}

.video-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.video-placeholder {
  display: grid;
  place-items: center;
  color: #dbe3f0;
  font-size: 14px;
  text-align: center;
  padding: 18px;
  background: linear-gradient(180deg, var(--ga-primary), var(--ga-primary-dark));
}

.video-info h3 {
  margin: 0 0 10px;
  font-size: 24px;
  color: var(--text-strong);
}

.video-info p {
  margin: 0 0 14px;
  color: #4b5563;
  font-size: 16px;
}

.video-info ul {
  margin: 0 0 16px;
  padding-left: 18px;
  color: var(--text-soft);
}

.video-info li + li {
  margin-top: 8px;
}

.text-link {
  color: var(--ga-primary);
  font-weight: 700;
}

.text-link:hover {
  color: var(--ga-primary-dark);
}

.support-card {
  padding: 32px;
  border-radius: 28px;
  background: linear-gradient(180deg, #ffffff 0%, #f7f9ff 100%);
  border: 1px solid var(--border);
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.06);
}

.support-head {
  margin-bottom: 24px;
}

.support-form {
  display: block;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

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

.form-field label {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-strong);
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid #cfd8e3;
  border-radius: 14px;
  background: #ffffff;
  color: var(--text-main);
  font: inherit;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--ga-primary);
  box-shadow: 0 0 0 4px rgba(13, 78, 166, 0.10);
}

.support-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 22px;
}

.form-note {
  margin: 0;
  font-size: 14px;
  color: var(--text-soft);
}

.site-footer {
  padding: 28px 0;
  background: var(--text-strong);
  color: #f9fafb;
  margin-top: 28px;
}

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

.footer-inner p {
  margin: 6px 0 0;
  color: #d1d5db;
  font-size: 14px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a {
  color: #f9fafb;
  font-size: 14px;
}

.footer-links a:hover {
  color: #93c5fd;
}

@media (max-width: 980px) {
  .hero-grid,
  .video-card {
    grid-template-columns: 1fr;
  }

  .hero-card {
    justify-content: flex-start;
  }

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

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

  .video-card {
    max-width: 760px;
  }

  .video-frame,
  .video-placeholder {
    max-width: 190px;
  }
}

@media (max-width: 720px) {
  .header-inner,
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .main-nav {
    gap: 16px;
    flex-wrap: wrap;
  }

  .hero {
    padding: 56px 0 44px;
  }

  .hero-text,
  .section-head p {
    font-size: 16px;
  }

  .modules-grid,
  .steps-grid,
  .support-grid {
    grid-template-columns: 1fr;
  }

  .video-card {
    padding: 18px;
  }

  .video-info h3 {
    font-size: 21px;
  }

  .support-card {
    padding: 22px;
  }

  .support-actions {
    align-items: flex-start;
    flex-direction: column;
  }
}