:root {
  --bg-0: #040b1a;
  --bg-1: #08152e;
  --bg-2: #0d1e3b;
  --panel: rgba(12, 25, 50, 0.75);
  --panel-solid: #0d1d3a;
  --panel-soft: #13284d;
  --text-strong: #e9f1ff;
  --text-main: #d5e3ff;
  --text-muted: #8ea7d1;
  --line: #244170;
  --line-soft: #1a345e;
  --brand: #3bbcff;
  --brand-2: #2b7fff;
  --brand-ink: #021326;
  --ok: #3bd3a2;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-lg: 0 22px 50px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.28);
  --font-sans: "Segoe UI", "Inter", system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--text-main);
  line-height: 1.65;
  background:
    radial-gradient(1200px 620px at 8% -8%, #1a3460 0%, transparent 60%),
    radial-gradient(1000px 700px at 95% 0%, #10294f 0%, transparent 62%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1) 35%, var(--bg-0));
  overflow-x: hidden;
}

a {
  color: inherit;
}

.container {
  width: min(1160px, 100%);
  margin: 0 auto;
  padding: 0 20px;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--line-soft);
  background: rgba(6, 14, 30, 0.78);
  backdrop-filter: blur(8px);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 74px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text-strong);
  letter-spacing: 0.2px;
}

.logo img {
  border-radius: 8px;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  padding: 10px 18px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.cta-button:hover {
  transform: translateY(-1px);
}

.cta-button.primary {
  color: var(--brand-ink);
  border-color: #49c8ff;
  background: linear-gradient(180deg, #7ad6ff, #39b9ff);
  box-shadow: 0 10px 24px rgba(58, 170, 255, 0.38);
}

.cta-button.primary:hover {
  background: linear-gradient(180deg, #90ddff, #47bfff);
}

.cta-button.secondary {
  color: #99ceff;
  border-color: #2b5fa0;
  background: rgba(9, 25, 51, 0.7);
}

.cta-button.secondary:hover {
  background: rgba(18, 42, 80, 0.88);
}

.cta-button.large {
  padding: 12px 22px;
}

.hero {
  padding: 76px 0 64px;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 32px;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.08;
  color: var(--text-strong);
  margin-bottom: 18px;
}

.highlight {
  background: linear-gradient(180deg, #73d8ff 0%, #4ebfff 55%, #368fff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--text-muted);
  max-width: 56ch;
  margin-bottom: 24px;
}

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

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badge {
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid #28558f;
  background: rgba(20, 44, 80, 0.56);
  color: #b8d6ff;
  font-size: 0.86rem;
}

.hero-image img,
.demo-image img,
.export-image img {
  width: 100%;
  max-width: 640px;
  height: auto;
  border-radius: 16px;
  border: 1px solid #264979;
  box-shadow: var(--shadow-lg);
}

.demo,
.features,
.export-showcase,
.final-cta {
  padding: 72px 0;
}

.problem-solution,
.how-it-works,
.privacy {
  padding: 72px 0;
  background: rgba(8, 20, 40, 0.46);
  border-top: 1px solid #173562;
  border-bottom: 1px solid #173562;
}

.demo h2,
.features h2,
.how-it-works h2,
.export-showcase h2,
.privacy-content h2,
.cta-content h2 {
  text-align: center;
  margin-bottom: 30px;
  color: var(--text-strong);
  font-size: clamp(1.7rem, 3.6vw, 2.45rem);
}

.demo-content,
.export-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
}

.demo-text h3 {
  color: var(--text-strong);
  font-size: 1.45rem;
  margin-bottom: 10px;
}

.demo-text p {
  color: var(--text-muted);
  margin-bottom: 14px;
}

.demo-features {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.demo-feature {
  border: 1px solid var(--line);
  background: rgba(11, 29, 60, 0.6);
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  color: #b9d8ff;
  width: fit-content;
}

.problem-solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.problem,
.solution,
.feature-card,
.step,
.export-option,
.privacy-feature {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 40, 77, 0.55), rgba(10, 24, 49, 0.78));
  border-radius: 16px;
  box-shadow: var(--shadow-md);
}

.problem,
.solution {
  padding: 24px;
}

.problem h2,
.solution h2 {
  color: var(--text-strong);
  margin-bottom: 8px;
}

.divider {
  width: 64px;
  height: 3px;
  border-radius: 20px;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
  margin-bottom: 14px;
}

.problem p,
.solution p,
.problem-list li,
.solution-list li {
  color: var(--text-muted);
}

.problem-list,
.solution-list {
  list-style: none;
}

.problem-list li,
.solution-list li {
  padding: 6px 0;
}

.solution-conclusion {
  color: #90ffd9;
  font-weight: 600;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  padding: 20px;
  text-align: left;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: #3c6da9;
}

.feature-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.4px;
  color: #d8eeff;
  border: 1px solid #377bc7;
  background: linear-gradient(180deg, #214a83, #18335d);
  margin-bottom: 10px;
}

.feature-card h3 {
  color: var(--text-strong);
  margin-bottom: 6px;
}

.feature-card p {
  color: var(--text-muted);
}

.steps {
  width: min(760px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.step {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 12px;
  align-items: center;
  padding: 16px 18px;
}

.step-number {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-pill);
  display: grid;
  place-items: center;
  font-weight: 800;
  color: #04152b;
  background: linear-gradient(180deg, #9be2ff, #49bfff);
}

.step-content h3 {
  color: var(--text-strong);
  margin-bottom: 2px;
}

.step-content p {
  color: var(--text-muted);
}

.step-arrow {
  text-align: center;
  color: #5cbfff;
  font-size: 1.35rem;
}

.cta-center {
  text-align: center;
  margin-top: 18px;
}

.export-features {
  display: grid;
  gap: 10px;
}

.export-option {
  padding: 12px 14px;
  color: var(--text-muted);
}

.export-option strong {
  color: #a8d5ff;
}

.privacy-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.privacy-feature {
  padding: 18px;
  text-align: left;
}

.privacy-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-pill);
  display: inline-grid;
  place-items: center;
  margin-bottom: 8px;
  color: #d8f2ff;
  font-weight: 800;
  border: 1px solid #3174bf;
  background: #17396a;
}

.privacy-feature h3 {
  color: var(--text-strong);
  margin-bottom: 3px;
}

.privacy-feature p,
.privacy-note {
  color: var(--text-muted);
}

.privacy-note {
  text-align: center;
}

.final-cta {
  text-align: center;
}

.cta-content h2 {
  margin-bottom: 14px;
}

.cta-note {
  color: var(--text-muted);
  margin-top: 10px;
}

.footer {
  border-top: 1px solid var(--line-soft);
  background: rgba(3, 10, 22, 0.92);
  padding: 38px 0 20px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
  margin-bottom: 14px;
}

.footer-brand {
  display: grid;
  gap: 8px;
}

.footer-brand p {
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 16px;
  align-items: center;
}

.footer-links a {
  text-decoration: none;
  color: #9fc2ef;
}

.footer-links a:hover {
  color: #d7ebff;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid #18345d;
  padding-top: 12px;
  color: #86a5cf;
}

.cta-button:focus-visible,
.footer-links a:focus-visible {
  outline: 2px solid #69ceff;
  outline-offset: 2px;
}

@media (max-width: 980px) {
  .hero-content,
  .demo-content,
  .export-content,
  .problem-solution-grid,
  .features-grid,
  .footer-content {
    grid-template-columns: 1fr;
  }

  .hero-image,
  .demo-image,
  .export-image {
    justify-self: center;
  }

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

@media (max-width: 680px) {
  .container {
    padding: 0 14px;
  }

  .header-content {
    min-height: 66px;
  }

  .hero {
    padding-top: 48px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .trust-badges {
    flex-direction: column;
    align-items: flex-start;
  }

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

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    scroll-behavior: auto !important;
  }
}