:root {
  --bg: #f4f5fb;
  --surface: #ffffff;
  --surface-2: #f8f9ff;
  --text: #1f2233;
  --muted: #6f7891;
  --primary: #5b5fef;
  --primary-2: #7b6cff;
  --blue: #4a8cff;
  --gold: #f1b13a;
  --soft-purple: #efecff;
  --soft-blue: #ecf5ff;
  --soft-gold: #fff6e8;
  --border: #e7eaf5;
  --shadow: 0 16px 40px rgba(41, 52, 98, 0.08);
  --radius: 28px;
  --radius-sm: 18px;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(123,108,255,0.10), transparent 24%),
    radial-gradient(circle at top right, rgba(91,95,239,0.10), transparent 22%),
    linear-gradient(180deg, #f6f7fc 0%, #eef2ff 100%);
  line-height: 1.65;
}

a {
  color: var(--primary);
  text-decoration: none;
}

.container {
  width: min(var(--max), calc(100% - 36px));
  margin: 0 auto;
  padding: 28px 0 72px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 26px;
  margin: 14px 0 26px;
  background: rgba(255,255,255,0.76);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow: var(--shadow);
}

.logo {
  font-size: 1.85rem;
  font-weight: 900;
  letter-spacing: -0.05em;
  color: var(--primary);
}

nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

nav a {
  font-weight: 700;
  color: #2d3142;
}

.hero {
  border-radius: 38px;
  overflow: hidden;
  box-shadow: 0 24px 80px rgba(91,95,239,0.20);
  margin-bottom: 24px;
}

.hero-app {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 26px;
  align-items: center;
  padding: 48px 42px;
  background:
    radial-gradient(circle at 20% 15%, rgba(255,255,255,0.32), transparent 24%),
    linear-gradient(135deg, #6e78ff 0%, #8473ff 50%, #9b89ff 100%);
  color: white;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.22);
  font-weight: 700;
  font-size: 0.92rem;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(2.5rem, 5vw, 4.9rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
  font-weight: 900;
}

.hero p {
  margin: 0 0 26px;
  font-size: 1.28rem;
  color: rgba(255,255,255,0.92);
  max-width: 720px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 170px;
  padding: 14px 22px;
  border-radius: 999px;
  background: white;
  color: var(--primary);
  font-weight: 800;
  box-shadow: 0 10px 30px rgba(20, 24, 40, 0.10);
}

.btn-secondary {
  background: rgba(255,255,255,0.14);
  color: white;
  border: 1px solid rgba(255,255,255,0.22);
  box-shadow: none;
}

.hero-chips {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 700;
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.18);
  color: white;
}

.chip-soft {
  background: rgba(255,255,255,0.18);
}

.chip-gold {
  background: rgba(255, 204, 102, 0.20);
}

.chip-blue {
  background: rgba(100, 196, 255, 0.18);
}

.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.mascot-wrap {
  width: min(100%, 360px);
  padding: 26px;
  border-radius: 32px;
  background: rgba(255,255,255,0.16);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 16px 40px rgba(37, 26, 108, 0.14);
}

.mascot {
  display: block;
  width: 100%;
  max-height: 300px;
  object-fit: contain;
}

.mini-panel {
  width: min(100%, 360px);
  padding: 20px 18px;
  border-radius: 24px;
  background: rgba(255,255,255,0.92);
  color: var(--text);
  box-shadow: var(--shadow);
}

.mini-title {
  font-weight: 800;
  margin-bottom: 14px;
  font-size: 1rem;
}

.mini-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.mini-stats div {
  text-align: center;
  padding: 10px 8px;
  border-radius: 16px;
  background: var(--surface-2);
}

.mini-stats strong {
  display: block;
  font-size: 1.35rem;
  color: var(--primary);
}

.mini-stats span {
  color: var(--muted);
  font-size: 0.85rem;
}

.grid-2,
.grid-3 {
  display: grid;
  gap: 18px;
  margin: 18px 0;
}

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

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

.card {
  background: rgba(255,255,255,0.82);
  border: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius);
  padding: 28px 26px;
  box-shadow: var(--shadow);
}

.card h1,
.card h2,
.card h3 {
  margin-top: 0;
  margin-bottom: 12px;
  letter-spacing: -0.04em;
}

.card h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.card h3 {
  font-size: 1.08rem;
}

.card p,
.card li {
  color: #55607a;
  font-size: 1.02rem;
}

.card ul {
  padding-left: 18px;
  margin-bottom: 0;
}

.feature-card,
.small-card {
  position: relative;
  overflow: hidden;
}

.accent-purple {
  box-shadow: inset 4px 0 0 var(--primary), var(--shadow);
}

.accent-blue {
  box-shadow: inset 4px 0 0 var(--blue), var(--shadow);
}

.accent-gold {
  box-shadow: inset 4px 0 0 var(--gold), var(--shadow);
}

.subject-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.subject-pill {
  display: inline-flex;
  padding: 12px 16px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-weight: 700;
  color: #4b5674;
}

.feature-list {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.feature-item {
  display: grid;
  gap: 4px;
  padding: 16px 18px;
  border-radius: 18px;
  background: var(--surface-2);
  border: 1px solid var(--border);
}

.feature-item strong {
  font-size: 1rem;
}

.feature-item span {
  color: var(--muted);
}

.pricing-card {
  margin-top: 20px;
}

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

.price-box {
  padding: 24px 20px;
  border-radius: 24px;
  background: var(--surface-2);
  border: 1px solid var(--border);
}

.price-box.featured {
  background: linear-gradient(180deg, #f4f3ff 0%, #eceeff 100%);
  border-color: rgba(91,95,239,0.18);
  box-shadow: inset 0 0 0 1px rgba(91,95,239,0.08);
}

.price-label {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.price-main {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.05em;
  margin-bottom: 10px;
  color: var(--text);
}

.price-main span {
  font-size: 1rem;
  font-weight: 700;
  color: var(--muted);
  margin-left: 4px;
}

footer {
  text-align: center;
  margin-top: 34px;
  padding: 18px 0 8px;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 980px) {
  .hero-app,
  .grid-2,
  .grid-3,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .hero-app {
    padding: 34px 22px;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(var(--max), calc(100% - 18px));
    padding-top: 18px;
  }

  header {
    border-radius: 28px;
    padding: 16px 18px;
    flex-direction: column;
    align-items: flex-start;
  }

  nav {
    gap: 16px;
  }

  .logo {
    font-size: 1.7rem;
  }

  .hero h1 {
    font-size: 2.6rem;
  }

  .hero p {
    font-size: 1.08rem;
  }

  .card {
    padding: 22px 18px;
  }

  .btn {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
  }
}