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

:root {
  --brand-start: #ee2e2d;
  --brand-end: #ea8323;
  --text-dark: #1a1a1a;
  --text-mid: #424142;
  --text-light: #6b6b6b;
  --bg-dark: #111;
  --bg-light: #f7f7f7;
  --bg-white: #fff;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Nav ---- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background 0.3s;
}

.nav.scrolled {
  background: rgba(17, 17, 17, 0.95);
  backdrop-filter: blur(8px);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.nav-logo {
  height: 48px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  flex-shrink: 0;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #fff;
}

.nav-cta {
  display: inline-block;
  padding: 8px 20px;
  background: linear-gradient(135deg, var(--brand-start), var(--brand-end));
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 6px;
  transition: opacity 0.2s;
}

.nav-cta:hover {
  opacity: 0.9;
}

/* ---- Hero ---- */

.hero {
  background: var(--bg-dark);
  color: #fff;
  padding: 160px 0 100px;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.15;
  max-width: 700px;
  margin: 0 auto 20px;
  letter-spacing: -0.02em;
}

.hero h1 span {
  background: linear-gradient(135deg, var(--brand-start), var(--brand-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.7);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.hero-cta {
  display: inline-block;
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--brand-start), var(--brand-end));
  color: #fff;
  font-size: 1.05rem;
  font-weight: 600;
  border-radius: 8px;
  transition: opacity 0.2s, transform 0.2s;
}

.hero-cta:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

/* ---- Section shared ---- */

section {
  padding: 56px 0;
  scroll-margin-top: 80px;
}

section h2 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

section h2 + p {
  color: var(--text-light);
  font-size: 1.05rem;
  max-width: 560px;
  margin-bottom: 28px;
}

/* ---- Problem ---- */

.problem {
  background: var(--bg-white);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.problem-card {
  padding: 20px;
  border: 1px solid #e8e8e8;
  border-radius: 10px;
}

.problem-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.problem-card p {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.55;
}

/* ---- Solution ---- */

.solution {
  background: var(--bg-light);
}

.solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.solution-card {
  padding: 20px;
  border-radius: 10px;
  background: var(--bg-white);
  border: 1px solid #e8e8e8;
}

.solution-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.solution-card p {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.55;
}

.solution-card .icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand-start), var(--brand-end));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
}

/* ---- Pricing ---- */

.pricing {
  background: var(--bg-white);
  text-align: center;
}

.pricing-card {
  max-width: 480px;
  margin: 0 auto;
  border: 2px solid #e0e0e0;
  border-radius: 14px;
  overflow: hidden;
  text-align: left;
}

.pricing-header {
  background: linear-gradient(135deg, var(--brand-start), var(--brand-end));
  color: #fff;
  padding: 24px 20px;
}

.pricing-header h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
}

.pricing-price span {
  font-size: 1rem;
  font-weight: 500;
  opacity: 0.85;
}

.pricing-body {
  padding: 20px;
}

.pricing-body ul {
  list-style: none;
  margin-bottom: 24px;
}

.pricing-body li {
  padding: 10px 0;
  border-bottom: 1px solid #f0f0f0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.95rem;
}

.pricing-body li:last-child {
  border-bottom: none;
}

.pricing-body .label {
  color: var(--text-mid);
  font-weight: 500;
}

.pricing-body .value {
  font-weight: 600;
  color: var(--text-dark);
}

.pricing-body .extra-note {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-light);
  margin-top: 8px;
}

.pricing-cta {
  display: block;
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--brand-start), var(--brand-end));
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  text-align: center;
  cursor: pointer;
  transition: opacity 0.2s;
}

.pricing-cta:hover {
  opacity: 0.92;
}

/* ---- Refund ---- */

.refund {
  background: var(--bg-dark);
  color: #fff;
  text-align: center;
}

.refund h2 {
  max-width: 540px;
  margin: 0 auto 20px;
}

.refund h2 + p {
  color: rgba(255, 255, 255, 0.65);
  max-width: 560px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.65;
}

/* ---- Footer ---- */

.footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.5);
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-logo {
  height: 24px;
  width: auto;
  opacity: 0.5;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
  font-size: 0.85rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: rgba(255, 255, 255, 0.8);
}

.footer-copy {
  font-size: 0.8rem;
}

/* ---- Mobile ---- */

@media (max-width: 768px) {
  .hero {
    padding: 120px 0 48px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .problem-grid,
  .solution-grid {
    grid-template-columns: 1fr;
  }

  section {
    padding: 48px 0;
  }

  section h2 {
    font-size: 1.6rem;
  }

  .pricing-price {
    font-size: 2.5rem;
  }

  .nav-links {
    gap: 16px;
  }

  .nav-links a {
    font-size: 0.8rem;
  }

  .footer .container {
    flex-direction: column;
    text-align: center;
  }
}