:root {
  --bg: #0b0f19;
  --bg-soft: #101626;
  --text: #f2f6ff;
  --text-muted: #9faac2;
  --line: rgba(255, 255, 255, 0.1);
  --accent: #2563eb;
  --accent-soft: #7aa6ff;
  --purple-soft: #8b7bff;
  --card-bg: rgba(17, 24, 39, 0.65);
  --radius-lg: 24px;
  --radius-md: 18px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  overflow-x: hidden;
}

.page-glow {
  position: fixed;
  inset: auto;
  width: 40rem;
  height: 40rem;
  pointer-events: none;
  z-index: -1;
  filter: blur(40px);
}

.page-glow-top {
  top: -12rem;
  right: -8rem;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.28), transparent 62%);
}

.page-glow-bottom {
  bottom: -18rem;
  left: -10rem;
  background: radial-gradient(circle, rgba(139, 123, 255, 0.2), transparent 62%);
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.section {
  padding: 6.5rem 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: linear-gradient(to bottom, rgba(11, 15, 25, 0.82), rgba(11, 15, 25, 0.35));
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header-inner {
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.02em;
}

nav {
  display: flex;
  gap: 1.5rem;
}

nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.96rem;
  transition: color 180ms ease;
}

nav a:hover {
  color: var(--text);
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  color: var(--accent-soft);
}

.hero {
  padding-top: 5.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 430px;
  gap: 3rem;
  align-items: center;
}

.hero-copy h1 {
  margin: 0.85rem 0 0;
  font-size: clamp(3rem, 8vw, 5.3rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
}

.hero-copy h2 {
  margin: 0.8rem 0 0;
  font-size: clamp(1.3rem, 2.7vw, 2rem);
  color: #d5ddf1;
  font-weight: 600;
}

.lead {
  margin-top: 1.35rem;
  color: var(--text-muted);
  font-size: 1.08rem;
  max-width: 44ch;
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  align-items: center;
  gap: 1.3rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.82rem 1.3rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb 0%, #4f7cff 52%, #7a66ff 100%);
  color: #f7f9ff;
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(79, 124, 255, 0.44);
}

.btn-link {
  color: #d7dff3;
  text-decoration: none;
  font-weight: 600;
}

.btn-link:hover {
  color: #f8fbff;
}

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

.phone-mockup {
  width: min(360px, 84vw);
  border-radius: 38px;
  padding: 0.6rem;
  background: linear-gradient(160deg, rgba(119, 153, 255, 0.28), rgba(139, 123, 255, 0.16));
  box-shadow: var(--shadow);
}

.phone-screen {
  background: linear-gradient(170deg, #10192f 0%, #0d1529 65%, #121426 100%);
  border-radius: 32px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  min-height: 650px;
  padding: 1.3rem;
}

.phone-notch {
  width: 36%;
  height: 1.4rem;
  border-radius: 0 0 1rem 1rem;
  margin: 0 auto 0.4rem;
  background: #06080f;
}

.app-header {
  display: flex;
  justify-content: space-between;
  color: #dce6ff;
  font-size: 0.84rem;
}

.mastery-card {
  margin-top: 1.1rem;
  padding: 1rem;
  border-radius: 18px;
  background: rgba(37, 99, 235, 0.16);
  border: 1px solid rgba(122, 166, 255, 0.28);
}

.mastery-card p,
.mastery-card small {
  margin: 0;
  color: #c8d7ff;
}

.mastery-card strong {
  display: block;
  margin: 0.35rem 0;
  font-size: 2rem;
}

.verb-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.verb-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0.85rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.tag {
  border-radius: 999px;
  padding: 0.25rem 0.55rem;
  font-size: 0.72rem;
}

.tag.high {
  background: rgba(68, 214, 160, 0.14);
  color: #74ebbf;
}

.tag.mid {
  background: rgba(255, 214, 102, 0.12);
  color: #ffd666;
}

.tag.low {
  background: rgba(255, 128, 128, 0.14);
  color: #ff9e9e;
}

.mock-button {
  margin-top: 1rem;
  width: 100%;
  border: none;
  border-radius: 12px;
  padding: 0.82rem;
  color: #ecf2ff;
  font-weight: 700;
  background: linear-gradient(130deg, #2563eb, #4f7cff);
}

.section-head {
  margin-bottom: 2rem;
}

.section-head h3 {
  margin: 0.55rem 0 0;
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  letter-spacing: -0.02em;
}

.feature-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card,
.screen-card,
.step-card {
  background: var(--card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.22);
}

.card {
  padding: 1.6rem;
  transition: transform 200ms ease, border-color 200ms ease;
}

.card h4 {
  margin: 0;
  font-size: 1.1rem;
}

.card p {
  margin: 0.65rem 0 0;
  color: var(--text-muted);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(122, 166, 255, 0.45);
}

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

.screen-card {
  padding: 1rem;
  transition: transform 240ms ease, box-shadow 240ms ease;
}

.screen-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 20px 42px rgba(37, 99, 235, 0.22);
}

.screen-label {
  margin: 0 0 0.8rem;
  font-size: 0.84rem;
  color: #c6d3f0;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.screen-content {
  border-radius: 14px;
  min-height: 250px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1rem;
  background: linear-gradient(160deg, rgba(20, 33, 56, 0.9), rgba(13, 20, 38, 0.9));
}

.list-screen {
  display: grid;
  align-content: start;
  gap: 0.65rem;
}

.list-screen span {
  background: rgba(255, 255, 255, 0.04);
  border-radius: 9px;
  padding: 0.58rem 0.65rem;
}

.quiz-screen small {
  color: #a4b0cb;
}

.quiz-screen strong {
  display: block;
  margin: 1.2rem 0;
  font-size: 2rem;
}

.choice-row {
  display: grid;
  gap: 0.6rem;
}

.choice-row span {
  padding: 0.6rem;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.05);
}

.stats-screen {
  display: grid;
  align-content: center;
  gap: 0.85rem;
}

.bar {
  height: 0.72rem;
  border-radius: 999px;
  width: var(--w);
  background: linear-gradient(90deg, #2563eb, #8b7bff);
}

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

.step-card {
  padding: 1.5rem;
}

.step-icon {
  width: 2.3rem;
  height: 2.3rem;
  border-radius: 999px;
  display: inline-grid;
  place-items: center;
  margin-bottom: 0.8rem;
  font-size: 0.8rem;
  background: rgba(37, 99, 235, 0.22);
  border: 1px solid rgba(111, 154, 255, 0.35);
  color: #d9e4ff;
}

.step-card h4 {
  margin: 0;
}

.step-card p {
  margin: 0.55rem 0 0;
  color: var(--text-muted);
}

.cta-block {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: 3.2rem 1.5rem;
  text-align: center;
  background: radial-gradient(circle at 20% 0%, rgba(139, 123, 255, 0.2), transparent 45%),
    radial-gradient(circle at 80% 90%, rgba(37, 99, 235, 0.26), transparent 45%),
    rgba(15, 22, 37, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.cta-block h3 {
  margin: 0 0 1.5rem;
  font-size: clamp(1.8rem, 4vw, 3rem);
  letter-spacing: -0.02em;
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 2rem 0 3rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.footer-brand {
  margin: 0;
  font-weight: 700;
}

.footer-tagline {
  margin: 0.22rem 0 0;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 1.2rem;
}

.footer-links a {
  text-decoration: none;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: #f2f6ff;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms ease, transform 700ms ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-copy {
    text-align: center;
  }

  .lead {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .feature-grid,
  .preview-grid,
  .steps-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 700px) {
  .section {
    padding: 4.8rem 0;
  }

  nav {
    display: none;
  }

  .feature-grid,
  .preview-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .phone-screen {
    min-height: 600px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}