:root {
  --theme-color: #4f46e5;
  --wb-primary: #4f46e5;
  --wb-primary-dark: #3730a3;
  --wb-accent: #0f766e;
  --wb-warm: #f97316;
  --wb-soft: #f6f8ff;
  --wb-border: #dfe6ff;
  --wb-text: #111827;
  --wb-muted: #667085;
  --wb-surface: #ffffff;
  --wb-ink: #172033;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--wb-text);
  background: #fbfcff;
}

.app-name-link img,
.app-name-link svg {
  max-width: 34px;
}

.sidebar,
.sidebar-toggle {
  background: #ffffff;
}

.sidebar ul li a {
  color: #344054;
  font-size: 14px;
}

.sidebar ul li.active > a {
  color: var(--wb-primary);
  font-weight: 700;
}

.markdown-section {
  max-width: 980px;
  color: var(--wb-text);
}

.markdown-section h1,
.markdown-section h2,
.markdown-section h3 {
  letter-spacing: 0;
  color: #101828;
}

.markdown-section h1 {
  font-size: 34px;
}

.markdown-section h2 {
  margin-top: 36px;
}

.markdown-section p,
.markdown-section li {
  line-height: 1.75;
}

.hero-box {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(240px, 0.85fr);
  gap: 26px;
  align-items: center;
  padding: 34px;
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(246, 248, 255, 0.96) 0%, rgba(238, 243, 255, 0.9) 52%, rgba(240, 253, 250, 0.95) 100%),
    url("../images/hero-cover.svg") center right / cover no-repeat;
  border: 1px solid var(--wb-border);
  margin: 20px 0 28px;
  overflow: hidden;
}

.hero-box h2 {
  font-size: 28px;
  line-height: 1.35;
  margin: 0 0 12px;
}

.hero-box p {
  color: #344054;
}

.hero-visual {
  width: 100%;
  max-width: 360px;
  justify-self: end;
  border-radius: 8px;
  border: 1px solid rgba(79, 70, 229, 0.16);
  box-shadow: 0 16px 38px rgba(31, 41, 55, 0.12);
}

.price-line {
  margin: 22px 0;
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.price {
  color: #dc2626;
  font-size: 30px;
  font-weight: 800;
}

.origin-price {
  color: #98a2b3;
  text-decoration: line-through;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border-radius: 8px;
  text-decoration: none !important;
  font-weight: 700;
  margin: 6px 8px 6px 0;
  transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease;
}

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

.btn-primary {
  background: var(--wb-primary);
  color: #fff !important;
  box-shadow: 0 10px 24px rgba(79, 70, 229, 0.22);
}

.btn-primary:hover {
  background: var(--wb-primary-dark);
}

.btn-secondary {
  background: #fff;
  color: #3730a3 !important;
  border: 1px solid #c7d2fe;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 20px 0;
}

.card {
  padding: 20px;
  border-radius: 8px;
  border: 1px solid #e4e7ec;
  background: var(--wb-surface);
  box-shadow: 0 6px 18px rgba(17, 24, 39, 0.05);
}

.card h3 {
  margin-top: 0;
  font-size: 18px;
}

.card p:last-child {
  margin-bottom: 0;
}

.buy-box {
  padding: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, #111827 0%, #1f2937 56%, #0f766e 100%);
  color: #fff;
  margin: 28px 0;
}

.buy-box h3,
.buy-box p,
.buy-box li {
  color: #fff;
}

.small-text {
  font-size: 13px;
  color: var(--wb-muted);
}

.buy-box .small-text {
  color: #d1d5db;
}

.qrcode {
  width: 180px;
  max-width: 100%;
  border-radius: 8px;
  border: 1px solid #e4e7ec;
  background: #fff;
  padding: 8px;
}

.notice-box {
  padding: 16px 18px;
  border-left: 4px solid var(--wb-primary);
  background: var(--wb-soft);
  border-radius: 8px;
  margin: 16px 0;
}

.warning-box {
  padding: 16px 18px;
  border-left: 4px solid var(--wb-warm);
  background: #fff7ed;
  border-radius: 8px;
  margin: 16px 0;
}

.feature-list li {
  margin: 8px 0;
}

.preview-image {
  width: 100%;
  border-radius: 8px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.08);
  background: #fff;
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 20px 0 28px;
}

.markdown-section table {
  display: table;
  width: 100%;
  overflow: hidden;
  border-radius: 8px;
}

.markdown-section th {
  background: #eef2ff;
  color: #1f2937;
}

.markdown-section blockquote {
  border-left: 4px solid var(--wb-primary);
  background: #f8f9ff;
  color: #374151;
  padding: 12px 18px;
  border-radius: 8px;
}

.markdown-section code {
  border-radius: 6px;
}

@media (max-width: 860px) {
  .hero-box {
    grid-template-columns: 1fr;
    padding: 24px;
  }

  .hero-visual {
    justify-self: start;
  }
}

@media (max-width: 720px) {
  .markdown-section {
    padding: 24px 18px 40px;
  }

  .markdown-section h1 {
    font-size: 28px;
  }

  .hero-box h2 {
    font-size: 22px;
  }

  .price {
    font-size: 26px;
  }

  .card-grid,
  .image-grid {
    grid-template-columns: 1fr;
  }

  .btn-primary,
  .btn-secondary {
    display: flex;
    width: 100%;
    box-sizing: border-box;
  }
}