:root {
  --green: #09b0d5;
  --accent-deep: #067a94;
  --navy: #0e1c2b;
  --cyan: #09b0d5;
  --navy-mid: #04182d;
  --white: #fff;
  --light-bg: #f4f8fa;
  --text: #434649;
  --font: "Poppins", sans-serif;
  --radius: 6px;
  --max-w: 1140px;
}

.blog-site {
  color: var(--text);
  font-family: var(--font);
}

.blog-site a {
  text-decoration: none;
}

.blog-header {
  align-items: center;
  background: var(--white);
  border-bottom: 1px solid #e5e8ec;
  display: flex;
  gap: 26px;
  padding: 14px 28px;
}

.blog-logo {
  color: var(--navy);
  font-size: 17px;
  font-weight: 800;
  white-space: nowrap;
}

.blog-logo span {
  color: var(--accent-deep);
}

.blog-nav {
  display: flex;
  font-size: 13.5px;
  font-weight: 500;
  gap: 22px;
  margin-left: auto;
}

.blog-nav a {
  color: var(--navy);
}

.blog-btn {
  background: var(--green);
  border-radius: var(--radius);
  color: var(--navy);
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  padding: 9px 18px;
}

.blog-btn-teal {
  background: var(--cyan);
  color: var(--navy);
}

.post-hero,
.idx-hero,
.cta-banner {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
  color: var(--white);
}

.post-hero {
  padding: 40px 28px 44px;
}

.post-hero .inner,
.article-wrap,
.idx-inner {
  margin: 0 auto;
  max-width: var(--max-w);
}

.crumbs {
  font-size: 12.5px;
  margin-bottom: 14px;
  opacity: 0.8;
}

.crumbs a {
  color: var(--green);
}

.cat-pill {
  background: rgba(9, 176, 213, 0.14);
  border: 1px solid var(--green);
  border-radius: 999px;
  color: var(--cyan);
  display: inline-block;
  font-size: 11.5px;
  font-weight: 600;
  margin-bottom: 12px;
  padding: 3px 12px;
}

.post-hero h1 {
  font-size: 34px;
  font-weight: 700;
  line-height: 1.25;
  max-width: 820px;
}

.meta-row {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  font-size: 13px;
  gap: 18px;
  margin-top: 18px;
  opacity: 0.9;
}

.avatar {
  align-items: center;
  background: var(--green);
  border-radius: 50%;
  color: var(--navy);
  display: inline-flex;
  font-size: 13px;
  font-weight: 700;
  height: 34px;
  justify-content: center;
  width: 34px;
}

.meta-row .sep {
  opacity: 0.4;
}

.article-wrap {
  display: grid;
  gap: 44px;
  grid-template-columns: minmax(0, 1fr) 300px;
  padding: 38px 28px 10px;
}

.blog-article {
  font-size: 15.5px;
  line-height: 1.85;
  min-width: 0;
}

.blog-article h2 {
  color: var(--navy);
  font-size: 23px;
  line-height: 1.3;
  margin: 34px 0 12px;
}

.blog-article h3 {
  color: var(--navy);
  font-size: 18px;
  line-height: 1.4;
  margin: 25px 0 9px;
}

.blog-article p {
  margin-bottom: 16px;
}

.blog-article a {
  color: var(--accent-deep);
  font-weight: 500;
}

.blog-article ul,
.blog-article ol {
  list-style-position: outside;
  margin: 12px 0 22px;
  padding-left: 25px;
}

.blog-article ul {
  list-style-type: disc;
}

.blog-article ol {
  list-style-type: decimal;
}

.blog-article li {
  margin-bottom: 8px;
}

.blog-article img {
  border-radius: var(--radius);
  height: auto;
  margin: 18px auto;
  max-width: 100%;
}

.blog-article blockquote {
  background: var(--light-bg) !important;
  border-left: 4px solid var(--green) !important;
  margin: 24px 0 !important;
  padding: 12px 20px !important;
}

.blog-article table {
  border-collapse: collapse;
  display: block;
  margin: 20px 0;
  max-width: 100%;
  overflow-x: auto;
  width: 100%;
}

.blog-article th,
.blog-article td {
  border: 1px solid #d9dee4;
  padding: 10px 12px;
  text-align: left;
}

.answer-box {
  background: var(--light-bg);
  border-left: 5px solid var(--green);
  border-radius: var(--radius);
  margin: 6px 0 22px;
  padding: 16px 20px;
}

.answer-box strong {
  color: var(--navy);
  display: block;
  font-size: 13px;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  text-transform: uppercase;
}

.updated {
  color: #5b6470;
  font-size: 12.5px;
  margin-bottom: 18px;
}

.faq {
  border: 1px solid #e5e8ec;
  border-radius: var(--radius);
  margin-bottom: 10px;
  overflow: hidden;
}

.faq summary {
  background: var(--white);
  color: var(--navy);
  cursor: pointer;
  font-size: 14.5px;
  font-weight: 600;
  list-style: none;
  padding: 14px 42px 14px 18px;
  position: relative;
}

.faq summary::after {
  color: var(--accent-deep);
  content: "+";
  font-size: 19px;
  font-weight: 700;
  position: absolute;
  right: 16px;
}

.faq[open] summary::after {
  content: "–";
}

.faq-body {
  font-size: 14px;
  padding: 0 18px 14px;
}

.author-box {
  align-items: center;
  background: var(--light-bg);
  border-radius: 10px;
  display: flex;
  gap: 16px;
  margin: 30px 0 8px;
  padding: 18px 20px;
}

.author-box .avatar {
  flex: 0 0 52px;
  font-size: 18px;
  height: 52px;
  width: 52px;
}

.author-box p strong {
  color: var(--navy);
  font-size: 14.5px;
}

.author-box p {
  font-size: 13px;
  margin: 2px 0 0;
}

.toc {
  border: 1px solid #e5e8ec;
  border-radius: 10px;
  padding: 18px 20px;
  position: sticky;
  top: 20px;
}

.toc-title {
  color: var(--navy);
  font-size: 12px;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.toc > a {
  border-left: 2px solid #e5e8ec;
  color: var(--text);
  display: block;
  font-size: 13.5px;
  padding: 6px 0 6px 12px;
}

.toc > a:first-of-type {
  border-left-color: var(--green);
  color: var(--accent-deep);
  font-weight: 600;
}

.side-cta {
  background: var(--navy);
  border-radius: 10px;
  color: var(--white);
  margin-top: 18px;
  padding: 20px;
  text-align: center;
}

.side-cta p {
  font-size: 13.5px;
  margin-bottom: 12px;
}

.related {
  background: var(--light-bg);
  margin-top: 36px;
  padding: 36px 28px 44px;
}

.related h2 {
  color: var(--navy);
  font-size: 22px;
  margin: 0 auto 18px;
  max-width: var(--max-w);
}

.card-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(4, 1fr);
  margin: 0 auto;
  max-width: var(--max-w);
}

.card {
  background: var(--white);
  border: 1px solid #e5e8ec;
  border-radius: 10px;
  display: block;
  overflow: hidden;
}

.thumb {
  background: linear-gradient(120deg, var(--navy) 0%, var(--cyan) 120%);
  height: 110px;
}

.thumb.g2 {
  background: linear-gradient(120deg, #173a52 0%, var(--green) 160%);
}

.thumb.g3 {
  background: linear-gradient(120deg, var(--navy-mid) 0%, #6db3c9 130%);
}

.thumb.g4 {
  background: linear-gradient(120deg, #0b2438 0%, #3a9ec2 170%);
}

.card h3 {
  color: var(--navy);
  font-size: 13.5px;
  line-height: 1.45;
  padding: 12px 14px 4px;
}

.card p {
  color: #5b6470;
  font-size: 12px;
  padding: 0 14px 14px;
}

.cta-banner {
  padding: 44px 28px;
  text-align: center;
}

.cta-banner h2 {
  font-size: 26px;
  margin-bottom: 8px;
}

.cta-banner p {
  font-size: 14.5px;
  margin-bottom: 20px;
  opacity: 0.85;
}

.cta-banner .blog-btn {
  margin: 0 6px;
}

.idx-hero {
  padding: 44px 28px;
}

.idx-hero h1 {
  font-size: 32px;
}

.idx-hero p {
  font-size: 14.5px;
  margin-top: 8px;
  max-width: 640px;
  opacity: 0.85;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.filters button {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  color: var(--white);
  cursor: pointer;
  font: 600 12.5px var(--font);
  padding: 6px 16px;
}

.filters button.on {
  background: var(--green);
  border-color: var(--green);
  color: var(--navy);
}

.featured {
  background: var(--white);
  border: 1px solid #e5e8ec;
  border-radius: 12px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  margin: 30px auto 0;
  max-width: var(--max-w);
  overflow: hidden;
}

.featured .thumb {
  height: 100%;
  min-height: 230px;
}

.featured-body {
  padding: 26px 28px;
}

.featured-body .cat-pill {
  background: rgba(9, 176, 213, 0.08);
  border-color: var(--cyan);
  color: var(--accent-deep);
}

.featured-body h2 {
  color: var(--navy);
  font-size: 21px;
  line-height: 1.35;
  margin: 4px 0 10px;
}

.featured-body p {
  font-size: 14px;
  line-height: 1.7;
}

.featured-body .meta {
  color: #5b6470;
  font-size: 12.5px;
  margin-top: 14px;
}

.idx-grid-wrap {
  padding: 30px 28px 50px;
}

.idx-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(3, 1fr);
  margin: 0 auto;
  max-width: var(--max-w);
}

.idx-grid .card h3 {
  font-size: 14.5px;
}

.idx-grid .thumb {
  height: 140px;
}

.idx-grid .meta {
  color: #5b6470;
  font-size: 11.5px;
  padding: 0 14px 14px;
}

.idx-card[hidden] {
  display: none;
}

.visually-hidden {
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

.blog-footer {
  background: var(--navy);
  color: var(--white);
  padding: 42px 28px 28px;
}

.footer-grid {
  display: grid;
  gap: 30px;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  margin: 0 auto;
  max-width: var(--max-w);
}

.footer-col h3 {
  color: var(--green);
  font-size: 13px;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.footer-col p,
.footer-col a {
  color: var(--white);
  display: block;
  font-size: 13px;
  line-height: 1.8;
  opacity: 0.88;
}

.footer-col .blog-logo {
  color: var(--white);
  margin-bottom: 12px;
}

.footer-logo {
  height: auto;
  margin-bottom: 14px;
  max-width: 133px;
}

.footer-trust-logos {
  height: auto;
  margin-top: 14px;
  max-width: 280px;
  width: 100%;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  display: inline-block;
}

.footer-about {
  margin-top: 14px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 12px;
  margin: 28px auto 0;
  max-width: var(--max-w);
  opacity: 0.7;
  padding-top: 18px;
}

@media (max-width: 768px) {
  .blog-header {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .blog-nav {
    gap: 14px;
    margin-left: 0;
    order: 3;
    width: 100%;
  }

  .blog-header > .blog-btn {
    margin-left: auto;
  }

  .article-wrap {
    grid-template-columns: 1fr;
  }

  .article-aside {
    grid-row: 2;
  }

  .toc {
    position: static;
  }

  .card-grid,
  .idx-grid,
  .featured,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .post-hero h1 {
    font-size: 26px;
  }

  .featured .thumb {
    min-height: 180px;
  }
}

@media (max-width: 480px) {
  .blog-header,
  .post-hero,
  .idx-hero,
  .article-wrap,
  .related,
  .idx-grid-wrap,
  .cta-banner,
  .blog-footer {
    padding-left: 18px;
    padding-right: 18px;
  }

  .blog-nav {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  .meta-row {
    gap: 10px;
  }

  .meta-row .sep {
    display: none;
  }

  .post-hero h1,
  .idx-hero h1 {
    font-size: 24px;
  }

  .cta-banner .blog-btn {
    display: block;
    margin: 8px auto;
    max-width: 230px;
  }
}