:root {
  --bg: #f7f8ff;
  --surface: #ffffff;
  --surface-2: #f3f4ff;
  --ink: #0f172a;
  --muted: #475569;
  --line: #e6e8f2;
  --brand: #4f46e5; /* indigo */
  --brand-2: #14b8a6; /* teal */
  --danger: #ef4444;
  --shadow: 0 14px 40px rgba(15, 23, 42, 0.10);
  --radius: 18px;
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(79, 70, 229, 0.18), transparent 60%),
    radial-gradient(900px 520px at 90% 0%, rgba(20, 184, 166, 0.16), transparent 60%),
    var(--bg);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(247, 248, 255, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(230, 232, 242, 0.75);
}

.header-inner {
  padding: 16px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  box-shadow: 0 10px 18px rgba(79, 70, 229, 0.22);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.nav-link {
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--muted);
  transition: 0.18s ease;
}

.nav-link:hover {
  border-color: rgba(79, 70, 229, 0.18);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.65);
}

.nav-link.active {
  color: var(--ink);
  background: rgba(79, 70, 229, 0.10);
  border-color: rgba(79, 70, 229, 0.25);
}

main {
  padding: 26px 0 56px;
}

.intro-block {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 26px;
}

.page-title {
  margin: 0 0 10px;
  font-size: clamp(1.85rem, 3.2vw, 2.75rem);
  line-height: 1.12;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 800;
  color: var(--brand);
  margin-bottom: 12px;
}

.eyebrow-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
}

.lead {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 1.02rem;
}

.criteria {
  margin: 12px 0 0;
  padding-left: 18px;
  color: var(--ink);
}

.criteria li {
  margin: 10px 0;
}

.section-title {
  margin: 0 0 14px;
  font-size: 1.45rem;
}

.top5-wrap {
  margin-top: 18px;
  display: grid;
  gap: 14px;
}

.rank-card {
  background: linear-gradient(180deg, rgba(243, 244, 255, 0.7), #fff);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
  padding: 18px 18px 16px;
  overflow: hidden;
}

.rank-card::before {
  content: "";
  display: block;
  height: 6px;
  width: 100%;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
  transform: translateY(-18px);
}

.rank-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.rank-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.rank-badge {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  background: rgba(79, 70, 229, 0.10);
  border: 1px solid rgba(79, 70, 229, 0.22);
  color: var(--brand);
  flex: 0 0 auto;
}

.rank-brand {
  margin: 0;
  font-size: 1.25rem;
}

.rank-score {
  margin: 4px 0 0;
  color: var(--muted);
  font-weight: 600;
}

.rank-desc {
  margin: 12px 0 10px;
  color: var(--ink);
}

.rank-points {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.rank-points li {
  margin: 8px 0;
}

.rank-points strong {
  color: var(--ink);
}

.two-col {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 14px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.06);
  padding: 18px;
}

.card h2,
.card h3 {
  margin: 0 0 10px;
}

.link-list {
  margin: 0;
  padding-left: 18px;
}

.link-list li {
  margin: 10px 0;
}

.link-list a {
  color: var(--brand);
  font-weight: 700;
}

.review-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.review-card p {
  margin: 10px 0 0;
  color: var(--muted);
}

.faq {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.05);
  padding: 16px 18px;
}

.faq-q {
  margin: 0;
  font-weight: 900;
}

.faq-a {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.footer {
  margin-top: 30px;
  color: var(--muted);
  font-size: 0.95rem;
  padding: 10px 0 0;
}

@media (max-width: 980px) {
  .two-col {
    grid-template-columns: 1fr;
  }
  .review-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .site-nav {
    justify-content: flex-start;
  }
  .intro-block {
    padding: 20px;
  }
  .review-grid {
    grid-template-columns: 1fr;
  }
  .rank-head {
    flex-direction: column;
    align-items: flex-start;
  }
}