@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;600;700;800&display=swap');
:root {
  --bg: #eef2f7;
  --surface: #ffffff;
  --ink: #13223b;
  --muted: #526077;
  --accent: #e67e22;
  --accent-strong: #c25c05;
  --line: #d7e0ea;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Manrope", "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 4%, #d9e8ff 0%, transparent 27%),
    radial-gradient(circle at 92% 0%, #ffe4cb 0%, transparent 24%),
    var(--bg);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}
.site-header-inner, .site-footer-inner, .page-wrap {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}
.site-header-inner {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.1px;
}
.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0b5ed7, #0ea5e9);
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.nav-link {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--muted);
  font-size: 0.9rem;
  transition: all 0.2s ease;
}
.nav-link:hover { border-color: var(--line); color: var(--ink); background: #f8fbff; }
.nav-link.active { color: var(--ink); border-color: #bcd3ee; background: #e8f3ff; }
.page-wrap { padding: 30px 0 56px; }
.hero-card, .content-card, .article-card, .disclosure-card, .author-card, .related-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 12px 24px rgba(11, 35, 68, 0.05);
}
.hero-card {
  padding: 34px;
  background:
    linear-gradient(120deg, rgba(11, 94, 215, 0.09), rgba(14, 165, 233, 0.04)),
    var(--surface);
}
.hero-kicker {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid #bad7ef;
  background: #ecf7ff;
  color: #0a4a6f;
  font-weight: 700;
  font-size: 0.78rem;
}
.hero-card h1, .content-card h1, .article-card h1 {
  margin: 14px 0 10px;
  line-height: 1.25;
  font-size: clamp(1.8rem, 3.8vw, 2.5rem);
}
.hero-card p { margin: 0; color: var(--muted); max-width: 74ch; }
.search-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 0.95rem;
  background: #fcfdff;
}
.search-input:focus {
  outline: 2px solid #b7d7f4;
  border-color: #88bbec;
}
.article-grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 14px;
}
.article-link-card {
  padding: 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fff;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.article-link-card:hover {
  transform: translateY(-3px);
  border-color: #b6cbe3;
  box-shadow: 0 14px 25px rgba(11, 35, 68, 0.08);
}
.article-link-card h3 { margin: 0 0 8px; font-size: 1.02rem; line-height: 1.35; }
.article-link-card p { margin: 0; color: var(--muted); font-size: 0.9rem; }
.article-card, .content-card { padding: 30px; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 12px;
}
.breadcrumb a { color: #134e95; }
.meta-line {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0 0 18px;
}
.disclosure-card {
  margin: 0 0 20px;
  padding: 14px 16px;
  border-left: 4px solid var(--accent);
  background: #fff8ef;
}
.disclosure-card strong { color: #8a4301; }
.article-body p { color: #273447; }
.amz-dual-btn-container {
  display: flex;
  gap: 15px;
  justify-content: center;
  margin-top: 20px;
  flex-wrap: wrap;
}
.amz-user-review-btn {
  background: #232f3e !important;
  color: #fff !important;
  padding: 12px 20px !important;
  border-radius: 6px !important;
  text-decoration: none !important;
  font-size: 0.9rem !important;
  font-weight: 600 !important;
  flex: 1;
  min-width: 140px;
  text-align: center;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2) !important;
}
.amz-buy-btn {
  background: #ea580c !important;
  color: #fff !important;
  padding: 12px 20px !important;
  border-radius: 6px !important;
  text-decoration: none !important;
  font-size: 0.9rem !important;
  font-weight: 600 !important;
  flex: 1;
  min-width: 140px;
  text-align: center;
  box-shadow: 0 2px 5px rgba(234, 88, 12, 0.3) !important;
}
.author-card {
  margin-top: 28px;
  padding: 18px;
  display: grid;
  gap: 6px;
  background: #f8fbff;
}
.author-name { font-size: 1.08rem; font-weight: 800; }
.author-role { color: #225e9e; font-weight: 700; font-size: 0.9rem; }
.related-card {
  margin-top: 20px;
  padding: 18px;
}
.related-card h2 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 1.15rem;
}
.related-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}
.related-list a { color: #0f4a87; text-decoration: underline; }
.micro-note {
  margin-top: 16px;
  color: var(--muted);
  font-size: 0.86rem;
}
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 11px 16px;
  border-radius: 10px;
  border: none;
  font-weight: 700;
  font-size: 0.92rem;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}
.button:hover { background: var(--accent-strong); }
.contact-email-box {
  background: #f8fbff;
  border: 1px solid var(--line);
  border-left: 4px solid #1d4e89;
  border-radius: 12px;
  padding: 16px;
  margin: 12px 0;
}
.site-footer {
  border-top: 1px solid var(--line);
  background: #fff;
}
.site-footer-inner {
  padding: 24px 0 34px;
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}
.footer-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-links a { color: #1d4e89; text-decoration: underline; }
@media (max-width: 860px) {
  .site-header-inner { align-items: flex-start; flex-direction: column; }
  .article-card, .content-card, .hero-card { padding: 22px; }
  .amz-pros-cons-grid { flex-direction: column !important; }
  .amz-pros-cons-col { width: 100% !important; min-width: 100% !important; }
  .amz-dual-btn-container { gap: 10px; }
  .amz-user-review-btn, .amz-buy-btn { width: 100% !important; min-width: auto !important; }
}