:root {
  color-scheme: light;
  --bg-primary: #f7f9fc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #eef4ff;
  --accent-blue: #007bff;
  --accent-green: #22c55e;
  --accent-red: #ef4444;
  --accent-gold: #fbbf24;
  --text-primary: #101828;
  --text-secondary: #475467;
  --text-muted: #667085;
  --border-color: rgba(15, 23, 42, 0.12);
  --border-strong: rgba(0, 123, 255, 0.32);
  --shadow-soft: 0 12px 36px rgba(15, 23, 42, 0.08);
  --page-bg:
    radial-gradient(ellipse at 50% -10%, rgba(0, 123, 255, 0.13) 0%, transparent 52%),
    linear-gradient(180deg, #f7f9fc 0%, #ffffff 45%, #eef4ff 100%);
  --header-bg: rgba(255, 255, 255, 0.86);
  --card-bg: rgba(255, 255, 255, 0.94);
  --tldr-bg: linear-gradient(180deg, rgba(0, 123, 255, 0.08), rgba(255, 255, 255, 0.98));
  --final-bg: radial-gradient(ellipse at top, rgba(0, 123, 255, 0.13), rgba(255, 255, 255, 0.98) 65%);
  --hero-visual-bg: linear-gradient(180deg, rgba(0, 123, 255, 0.12), rgba(255, 255, 255, 0.96));
}
[data-theme="dark"] {
  color-scheme: dark;
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a26;
  --text-primary: #ffffff;
  --text-secondary: #b4b9c5;
  --text-muted: #7c8294;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(0, 123, 255, 0.35);
  --shadow-soft: 0 8px 32px rgba(0, 0, 0, 0.45);
  --page-bg:
    radial-gradient(ellipse at 50% -10%, rgba(0, 123, 255, 0.16) 0%, transparent 52%),
    linear-gradient(180deg, #0a0a0f 0%, #11111a 45%, #0a0a0f 100%);
  --header-bg: rgba(10, 10, 15, 0.86);
  --card-bg: rgba(18, 18, 26, 0.9);
  --tldr-bg: linear-gradient(180deg, rgba(0, 123, 255, 0.09), rgba(18, 18, 26, 0.95));
  --final-bg: radial-gradient(ellipse at top, rgba(0, 123, 255, 0.16), rgba(18, 18, 26, 0.95) 65%);
  --hero-visual-bg: linear-gradient(180deg, rgba(0, 123, 255, 0.12), rgba(18, 18, 26, 0.94));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  margin: 0;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--page-bg);
  color: var(--text-primary);
  line-height: 1.7;
}
a { color: #0067d8; }
[data-theme="dark"] a { color: #7db7ff; }
.container { width: min(1120px, calc(100% - 48px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px min(32px, 5vw);
  background: var(--header-bg);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(14px);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}
.site-header.header-hidden { transform: translateY(-110%); }
.brand { color: var(--text-primary); font-weight: 800; text-decoration: none; letter-spacing: -0.02em; }
.site-nav, .site-footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
.site-nav a, .site-footer nav a { color: var(--text-secondary); font-size: 14px; text-decoration: none; font-weight: 700; }
.site-nav a:hover, .site-footer nav a:hover { color: var(--text-primary); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.theme-toggle {
  border: 1px solid var(--border-strong);
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-radius: 999px;
  padding: 10px 14px;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
}
.theme-toggle:hover { border-color: var(--accent-blue); }
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  border: 1px solid var(--border-strong);
  background: var(--bg-secondary);
  border-radius: 999px;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
}
.menu-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--text-primary);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.site-header.menu-open .menu-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-header.menu-open .menu-toggle span:nth-child(2) { opacity: 0; }
.site-header.menu-open .menu-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.hero { padding: 80px 0 56px; border-bottom: 1px solid var(--border-color); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr); align-items: center; gap: 42px; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; color: var(--text-muted); font-size: 13px; margin-bottom: 28px; }
.breadcrumbs a { color: var(--text-secondary); text-decoration: none; }
.crumb-separator { color: var(--text-muted); }
.eyebrow, .section-kicker {
  color: var(--accent-blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 12px;
}
.section-kicker.danger { color: var(--accent-red); }
h1, h2, h3 { color: var(--text-primary); line-height: 1.12; letter-spacing: -0.035em; }
h1 { max-width: 900px; margin: 0 0 22px; font-size: clamp(40px, 6vw, 68px); }
h2 { margin: 0 0 18px; font-size: clamp(28px, 4vw, 42px); }
h3 { font-size: 22px; }
.subheadline { color: var(--text-secondary); font-size: clamp(18px, 2.3vw, 22px); max-width: 780px; margin: 0 0 26px; }
.social-proof {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  color: var(--text-secondary);
  padding: 10px 16px;
  margin-bottom: 26px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
}
.stars { color: var(--accent-gold); letter-spacing: -1px; }
.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 24px;
  border-radius: 12px;
  background: var(--accent-blue);
  color: #fff;
  text-decoration: none;
  font-weight: 800;
  box-shadow: 0 0 24px rgba(0, 123, 255, 0.35);
}
.cta-button:hover { background: #1a8cff; transform: translateY(-1px); }
.hero-visual {
  min-height: 330px;
  display: grid;
  place-items: center;
  gap: 10px;
  padding: 32px;
  text-align: center;
  background: var(--hero-visual-bg);
  border: 1px solid var(--border-strong);
  border-radius: 24px;
  box-shadow: var(--shadow-soft);
}
.hero-visual span {
  display: block;
  width: 100%;
  padding: 22px;
  border-radius: 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  font-size: 24px;
  font-weight: 800;
}
.hero-visual strong { color: var(--accent-green); font-size: 42px; }
.hero-visual small { color: var(--text-secondary); }
.article-body { padding: 56px 0 88px; }
.content-section, .tldr-box, .final-cta-card {
  margin: 0 0 28px;
  padding: clamp(24px, 5vw, 42px);
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 22px;
  box-shadow: var(--shadow-soft);
}
.content-section p, .tldr-box p, .final-cta-card p { color: var(--text-secondary); font-size: 17px; }
.tldr-box { border-color: var(--border-strong); background: var(--tldr-bg); }
.tldr-box ul, .check-list, .x-list { color: var(--text-secondary); padding-left: 22px; }
.check-list li, .x-list li { margin: 10px 0; }
.table-wrap { overflow-x: auto; border-radius: 16px; border: 1px solid var(--border-color); }
.comparison-table { width: 100%; border-collapse: collapse; min-width: 680px; background: var(--bg-tertiary); }
.comparison-table caption { text-align: left; color: var(--text-muted); padding: 14px 16px; }
.comparison-table th, .comparison-table td { padding: 16px; border-top: 1px solid var(--border-color); text-align: left; vertical-align: top; }
.comparison-table th { color: var(--text-primary); background: rgba(0, 123, 255, 0.11); }
.comparison-table td { color: var(--text-secondary); }
.two-column { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.reviews-grid, .resource-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.review-card, .resource-card {
  padding: 24px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
}
.review-card p, .resource-card p { color: var(--text-secondary); }
.review-card strong, .review-card span { display: block; }
.review-card span { color: var(--text-muted); font-size: 14px; }
.faq-list { display: grid; gap: 12px; }
.faq-item { padding: 18px 20px; background: var(--bg-tertiary); border: 1px solid var(--border-color); border-radius: 14px; }
.faq-item summary { cursor: pointer; font-weight: 800; color: var(--text-primary); }
.faq-item p { margin-bottom: 0; }
.final-cta-card {
  text-align: center;
  border-color: var(--border-strong);
  background: var(--final-bg);
}
.trust-row { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; margin-top: 20px; color: var(--text-secondary); font-size: 14px; }
.trust-row span { padding: 8px 12px; background: var(--bg-tertiary); border: 1px solid var(--border-color); border-radius: 999px; }
.link-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.link-grid a, .text-link {
  display: block;
  padding: 14px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 800;
}
.link-grid a:hover, .text-link:hover { border-color: var(--border-strong); color: var(--text-primary); }
.site-footer {
  padding: 34px min(32px, 5vw) 120px;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  background: var(--bg-secondary);
}
.site-footer nav {
  justify-content: center;
  max-width: 920px;
  margin: 0 auto;
}
.sticky-cta {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  padding: 12px 16px;
  background: var(--header-bg);
  border-top: 1px solid var(--border-strong);
}
.sticky-cta .cta-button { width: 100%; }
@media (max-width: 900px) {
  .hero-grid, .two-column { grid-template-columns: 1fr; }
  .reviews-grid, .resource-grid, .link-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .container { width: min(100% - 32px, 1120px); }
  .site-header {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
  }
  .brand { font-size: 16px; }
  .header-actions {
    grid-column: 2;
    grid-row: 1;
    justify-self: end;
    gap: 8px;
  }
  .theme-toggle {
    min-width: 68px;
    padding: 9px 12px;
  }
  .menu-toggle { display: inline-flex; }
  .site-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    width: 100%;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
    transform: translateY(-4px);
    transition: max-height 0.24s ease, opacity 0.2s ease, transform 0.2s ease;
  }
  .site-header.menu-open .site-nav {
    max-height: 220px;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }
  .site-nav a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 9px 10px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 13px;
    line-height: 1.2;
    text-align: center;
  }
  .hero { padding-top: 54px; }
  .reviews-grid, .resource-grid, .link-grid { grid-template-columns: 1fr; }
  .site-footer {
    padding: 26px 16px 104px;
  }
  .site-footer nav {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .site-footer nav a {
    display: block;
    padding: 12px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    text-align: center;
  }
  .sticky-cta { display: block; }
  body { padding-bottom: 78px; }
}