:root {
  color-scheme: light;
  --blue: #1293ee;
  --blue-dark: #0872c5;
  --blue-soft: #e8f5ff;
  --ink: #102033;
  --muted: #607086;
  --line: #dce8f4;
  --surface: #ffffff;
  --surface-soft: #f5faff;
  --green: #16a34a;
  --red: #dc2626;
  --shadow: 0 18px 45px rgba(16, 32, 51, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
}

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

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

.skip-link {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 20;
  padding: 10px 14px;
  background: var(--ink);
  color: #fff;
  border-radius: 6px;
}

.skip-link:focus {
  top: 12px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(220, 232, 244, 0.75);
  backdrop-filter: blur(14px);
}

.nav,
.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

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

.nav-links,
.footer-links {
  display: none;
  align-items: center;
  gap: 22px;
}

.nav-links a,
.footer-links a,
.text-cta {
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
}

.nav-links a:hover,
.footer-links a:hover,
.text-cta:hover {
  color: var(--blue-dark);
}

.section {
  padding: 72px 0;
}

.hero {
  overflow: hidden;
  padding: 54px 0 76px;
  background: linear-gradient(180deg, #f2f9ff 0%, #ffffff 100%);
}

.hero-grid,
.practice-grid,
.split {
  display: grid;
  gap: 36px;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue-dark);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 18px;
  font-size: clamp(2.45rem, 9vw, 4.9rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.06;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.18rem;
  line-height: 1.2;
}

.hero-subtitle {
  max-width: 630px;
  margin-bottom: 26px;
  color: var(--muted);
  font-size: 1.2rem;
}

.cta-row,
.store-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 900;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

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

.btn-primary,
.btn-small {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 12px 24px rgba(18, 147, 238, 0.26);
}

.btn-primary:hover,
.btn-small:hover {
  background: var(--blue-dark);
}

.btn-secondary {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}

.btn-small {
  min-height: 40px;
  padding: 0 14px;
  font-size: 0.9rem;
}

.urgency {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
  max-width: 520px;
  margin-top: 24px;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(16, 32, 51, 0.08);
}

.urgency strong {
  color: var(--blue-dark);
  font-size: 1.55rem;
  line-height: 1;
}

.urgency span {
  color: var(--muted);
  font-size: 0.95rem;
}

.phone-wrap {
  display: flex;
  justify-content: center;
}

.phone {
  width: min(310px, 82vw);
  padding: 14px;
  background: #102033;
  border-radius: 34px;
  box-shadow: var(--shadow);
}

.phone-top {
  width: 76px;
  height: 6px;
  margin: 2px auto 12px;
  background: #314258;
  border-radius: 20px;
}

.app-screen {
  min-height: 560px;
  padding: 26px 20px;
  background: #fff;
  border-radius: 24px;
}

.app-screen img {
  margin-bottom: 22px;
  border-radius: 16px;
}

.screen-label {
  margin-bottom: 6px;
  color: var(--blue-dark);
  font-weight: 900;
}

.app-screen h2 {
  margin-bottom: 10px;
  font-size: 2rem;
}

.answer {
  margin-top: 12px;
  padding: 12px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 800;
}

.answer.is-active {
  border-color: var(--blue);
  background: var(--blue-soft);
}

.progress-bar {
  height: 10px;
  margin-top: 28px;
  overflow: hidden;
  background: #eaf1f8;
  border-radius: 99px;
}

.progress-bar span {
  display: block;
  width: 68%;
  height: 100%;
  background: var(--blue);
}

.proof-strip {
  padding: 24px 0;
  background: var(--ink);
  color: #fff;
}

.proof-grid {
  display: grid;
  gap: 18px;
}

.proof-grid div {
  display: grid;
  gap: 2px;
}

.proof-grid strong {
  font-size: 1.5rem;
}

.proof-grid span {
  color: #c8d6e6;
}

.section-head {
  display: grid;
  gap: 8px;
  margin-bottom: 26px;
}

.feature-grid,
.country-grid,
.review-grid {
  display: grid;
  gap: 16px;
}

.card,
.country,
.review,
.quiz-card,
.support-box {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(16, 32, 51, 0.06);
}

.card,
.country,
.review {
  padding: 22px;
}

.icon,
.flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  color: var(--blue-dark);
  background: var(--blue-soft);
  border-radius: 8px;
  font-weight: 900;
}

.muted,
.card p,
.country p,
.review figcaption,
.legal-page p,
.legal-page li {
  color: var(--muted);
}

.practice-section,
.countries {
  background: var(--surface-soft);
}

.quiz-card {
  padding: 20px;
}

.quiz-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
}

.quiz-options {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.quiz-option {
  width: 100%;
  min-height: 52px;
  padding: 12px 14px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  font-weight: 800;
  text-align: left;
  cursor: pointer;
}

.quiz-option:hover:not(:disabled) {
  border-color: var(--blue);
  background: var(--blue-soft);
}

.quiz-option.correct {
  border-color: rgba(22, 163, 74, 0.65);
  background: #eaf8ef;
}

.quiz-option.incorrect {
  border-color: rgba(220, 38, 38, 0.55);
  background: #fff1f2;
}

.quiz-feedback {
  min-height: 54px;
  margin: 14px 0;
  color: var(--muted);
  font-weight: 700;
}

.social-section {
  background: #fff;
}

.review {
  margin: 0;
}

.review blockquote {
  margin: 0 0 14px;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.45;
}

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

.download-section {
  background: var(--blue);
  color: #fff;
}

.download-box {
  display: grid;
  gap: 24px;
  align-items: center;
}

.download-box .eyebrow,
.download-box p {
  color: #e9f6ff;
}

.store-button {
  min-width: 170px;
  padding: 12px 16px;
  color: #fff;
  background: #0b1726;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  text-decoration: none;
}

.store-button span,
.store-button strong {
  display: block;
  line-height: 1.15;
}

.store-button span {
  font-size: 0.74rem;
  color: #c8d6e6;
}

.store-button strong {
  font-size: 1.1rem;
}

.faq-list {
  display: grid;
  gap: 10px;
}

details {
  padding: 18px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

summary {
  font-weight: 900;
  cursor: pointer;
}

details p {
  margin: 12px 0 0;
  color: var(--muted);
}

.footer {
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.legal-page {
  padding: 56px 0 84px;
  max-width: 820px;
}

.legal-page h1 {
  margin-bottom: 18px;
  font-size: clamp(2.4rem, 8vw, 4.3rem);
}

.legal-page h2 {
  margin-top: 34px;
  font-size: 1.35rem;
  line-height: 1.25;
}

.support-box {
  margin: 28px 0;
  padding: 24px;
}

@media (min-width: 720px) {
  .nav-links,
  .footer-links {
    display: flex;
  }

  .hero-grid,
  .practice-grid,
  .split,
  .download-box {
    grid-template-columns: 1fr 0.8fr;
    align-items: center;
  }

  .proof-grid,
  .country-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

@media (min-width: 980px) {
  .hero {
    padding: 74px 0 96px;
  }

  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .section-head {
    grid-template-columns: 1fr auto;
    align-items: end;
  }

  .section-head .eyebrow {
    grid-column: 1 / -1;
  }
}

@media (max-width: 520px) {
  .nav {
    min-height: 64px;
  }

  .brand span {
    font-size: 0.95rem;
  }

  .btn-small {
    min-height: 38px;
    padding: 0 12px;
  }

  .section {
    padding: 54px 0;
  }

  .hero {
    padding-top: 42px;
  }

  .phone {
    width: min(288px, 94vw);
  }

  .app-screen {
    min-height: 500px;
  }
}