:root {
  --bg: #ffffff;
  --text: #111111;
  --muted: #626262;
  --border: #e5e7eb;
  --blue: #6bb8ff;
  --green: #8de2b3;
  --red: #ff8f8f;
  --surface: #f7f8f8;
  --shadow: 0 18px 45px rgba(0, 0, 0, .08);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  color: var(--text);
  font-family: Inter, sans-serif;
  background: var(--bg);
}

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

img {
  display: block;
  max-width: 100%;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(14px);
}

.nav {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  font-size: 1.55rem;
  font-weight: 900;
  letter-spacing: -1px;
}

.logo span {
  color: var(--blue);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: var(--muted);
  font-weight: 800;
}

.nav-links a:hover {
  color: var(--text);
}

.breadcrumbs {
  padding: 20px 0 0;
  color: var(--muted);
  font-size: .92rem;
}

.breadcrumbs a {
  color: #1469ae;
  font-weight: 800;
}

.hero {
  padding: 52px 0 36px;
}

.hero-panel {
  padding: clamp(32px, 6vw, 64px);
  border: 1px solid var(--border);
  border-radius: 32px;
  background:
    radial-gradient(circle at 86% 16%, rgba(107, 184, 255, .32), transparent 34%),
    linear-gradient(135deg, #fff 0%, #f7f8f8 100%);
  box-shadow: var(--shadow);
}

.eyebrow {
  margin-bottom: 14px;
  color: #3d6f91;
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .13em;
  text-transform: uppercase;
}

h1 {
  max-width: 920px;
  font-size: clamp(2.45rem, 5vw, 4.7rem);
  line-height: 1;
  letter-spacing: -3px;
}

.lead {
  max-width: 820px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.8;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.article-meta span,
.verdict-pill {
  padding: 8px 11px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: .85rem;
  font-weight: 800;
  background: #fff;
}

.layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  padding: 28px 0 78px;
}

.contents-sidebar {
  position: sticky;
  top: 98px;
  display: grid;
  gap: 16px;
}

.toc-card,
.side-cta,
.article-card {
  border: 1px solid var(--border);
  border-radius: 24px;
  background: #fff;
  box-shadow: var(--shadow);
}

.toc-card,
.side-cta {
  padding: 20px;
}

.toc-card h2,
.side-cta h2 {
  margin-bottom: 12px;
  font-size: 1.05rem;
}

.toc-card nav {
  display: grid;
  gap: 4px;
}

.toc-card a {
  padding: 8px 0;
  color: var(--muted);
  font-size: .94rem;
  font-weight: 800;
}

.toc-card a:hover {
  color: #1469ae;
}

.side-cta p {
  color: var(--muted);
  line-height: 1.65;
}

.button {
  display: inline-flex;
  width: max-content;
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 13px;
  color: #111;
  font-weight: 900;
  background: var(--blue);
}

.article {
  display: grid;
  gap: 22px;
  min-width: 0;
}

.article-card {
  padding: clamp(24px, 4vw, 38px);
}

.article-card h2 {
  margin-bottom: 16px;
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  letter-spacing: -1px;
}

.article-card h3 {
  margin: 22px 0 10px;
  font-size: 1.18rem;
}

.article-card p,
.article-card li {
  color: var(--muted);
  line-height: 1.82;
}

.article-card p + p {
  margin-top: 14px;
}

.article-card ul,
.article-card ol {
  display: grid;
  gap: 10px;
  padding-left: 22px;
}

.quick-verdict {
  display: grid;
  gap: 16px;
  padding: 24px;
  border: 1px solid rgba(107, 184, 255, .34);
  border-radius: 24px;
  background: rgba(107, 184, 255, .12);
}

.verdict-grid,
.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.verdict-box,
.spec-box {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface);
}

.verdict-box strong,
.spec-box strong {
  display: block;
  margin-bottom: 6px;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: #fff;
}

.comparison-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
  line-height: 1.55;
}

.comparison-table th {
  font-size: .78rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  background: #eef6ff;
}

.comparison-table tr:last-child td {
  border-bottom: 0;
}

.winner {
  color: #0b6f42;
  font-weight: 900;
}

.note {
  margin-top: 14px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 16px;
  color: var(--muted);
  background: var(--surface);
}

.cta-panel {
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid rgba(141, 226, 179, .55);
  border-radius: 26px;
  background:
    radial-gradient(circle at 90% 10%, rgba(141, 226, 179, .32), transparent 32%),
    #fff;
  box-shadow: var(--shadow);
}

.cta-panel h2 {
  margin-bottom: 10px;
}

.cta-panel p {
  max-width: 760px;
  color: var(--muted);
  line-height: 1.75;
}

.source-list a {
  color: #1469ae;
  font-weight: 850;
}

.faq details {
  padding: 16px 0;
  border-top: 1px solid var(--border);
}

.faq details:first-of-type {
  border-top: 0;
}

.faq summary {
  cursor: pointer;
  font-weight: 900;
}

.faq details p {
  margin-top: 9px;
}

.footer {
  padding: 34px 0;
  border-top: 1px solid var(--border);
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-weight: 800;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .contents-sidebar {
    position: static;
  }

  .toc-card nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
  }

  h1 {
    letter-spacing: -2px;
  }

  .verdict-grid,
  .spec-grid {
    grid-template-columns: 1fr;
  }

  .toc-card nav {
    grid-template-columns: 1fr;
  }

  .footer-row {
    flex-direction: column;
  }
}