:root {
  --magic-glow: rgba(99, 102, 241, 0.2);
  --magic-surface: linear-gradient(140deg, rgba(255, 255, 255, 0.98), rgba(241, 245, 255, 0.96));
}

html[data-theme="graphite"],
html[data-theme="oled"] {
  --magic-glow: rgba(129, 140, 248, 0.34);
  --magic-surface: linear-gradient(140deg, rgba(25, 31, 54, 0.95), rgba(14, 20, 40, 0.95));
}

html[data-theme="oled"] {
  --magic-glow: rgba(255, 255, 255, 0.12);
  --magic-surface: linear-gradient(140deg, rgba(10, 10, 10, 0.96), rgba(2, 2, 2, 0.98));
}

.hero {
  background:
    radial-gradient(circle at 12% 18%, var(--magic-glow) 0%, transparent 38%),
    radial-gradient(circle at 84% 14%, rgba(67, 56, 202, 0.14) 0%, transparent 34%),
    linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.03));
}

.hero-title {
  letter-spacing: 0.01em;
  text-wrap: balance;
}

.quick-access-section {
  position: relative;
  overflow: hidden;
}

.quick-access-section::before {
  content: "";
  position: absolute;
  inset: -120px -80px auto;
  height: 260px;
  background: radial-gradient(circle at 40% 50%, var(--magic-glow), transparent 68%);
  pointer-events: none;
}

.quick-access-section .container {
  position: relative;
  z-index: 1;
}

.quick-access-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.quick-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--magic-surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 15px 16px;
  min-height: 104px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.06);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.quick-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.1);
}

.quick-card-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.quick-card-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  flex: 0 0 auto;
}

.quick-card-icon svg {
  width: 32px;
  height: 32px;
}

.quick-card-icon-tutor {
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
}

.quick-card-label {
  font-weight: 700;
  color: var(--text);
}

.quick-card-sub {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.home-characters-strip {
  margin-top: 18px;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background: var(--magic-surface);
  box-shadow: var(--shadow-sm);
}

.home-characters-strip img {
  width: 100%;
  max-height: 180px;
  object-fit: cover;
  object-position: center 72%;
  display: block;
}

.instructions-content ol {
  margin: 0 0 16px;
  padding-inline-start: 1.35rem;
  overflow: visible;
}

.instructions-content li {
  margin: 0 0 6px;
  padding-inline-start: 0.15rem;
}

.instructions-content ol li::marker {
  font-weight: 700;
  color: var(--primary);
}

@media (max-width: 1330px) {
  .main-nav {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .header-inner {
    gap: 10px;
  }
}

@media (max-width: 1100px) {
  .quick-access-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 84px 0 66px;
  }

  .quick-access-grid {
    grid-template-columns: 1fr;
  }

  .quick-card {
    min-height: 94px;
    padding: 14px;
  }

  .home-characters-strip img {
    max-height: 138px;
  }

  .instructions-content ol {
    padding-inline-start: 1.18rem;
  }
}

@media (max-width: 520px) {
  .logo-text {
    display: none;
  }

  .logo-img {
    height: 42px;
  }

  .theme-toggle {
    width: 34px;
    height: 34px;
  }
}