.blog-body { background: #f7f9fa; }
.blog-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid rgba(213,220,227,.88); background: rgba(255,255,255,.94); backdrop-filter: blur(14px); }
.blog-header-inner { min-height: 76px; display: flex; align-items: center; gap: 34px; }
.blog-nav { display: flex; align-items: center; gap: 26px; margin-left: auto; }
.blog-nav a { color: #47566a; font-size: 14px; font-weight: 750; }
.blog-nav a:hover, .blog-nav a[aria-current="page"] { color: var(--teal-dark); }
.blog-header-cta { min-height: 42px; }
.blog-mobile-cta { display: none; }

.blog-hero { position: relative; overflow: hidden; padding: 92px 0 76px; background: linear-gradient(145deg,#f8fbfc 0%,#edf6f7 100%); }
.blog-hero::after { content: ""; position: absolute; width: 520px; height: 520px; top: -300px; right: -120px; border: 1px solid rgba(14,116,144,.14); border-radius: 50%; box-shadow: 0 0 0 80px rgba(14,116,144,.025),0 0 0 160px rgba(14,116,144,.018); }
.blog-hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0,1.05fr) minmax(360px,.75fr); align-items: end; gap: 80px; }
.blog-hero h1 { max-width: 780px; margin-bottom: 22px; font-size: clamp(46px,6vw,72px); font-weight: 850; letter-spacing: -.055em; }
.blog-hero h1 span { color: var(--teal); }
.blog-hero-lead { max-width: 700px; margin: 0; color: #526173; font-size: 18px; line-height: 1.7; }
.blog-hero-note { padding: 24px; border: 1px solid #cfe0e2; border-radius: 16px; background: rgba(255,255,255,.72); }
.blog-hero-note strong { display: block; margin-bottom: 7px; color: var(--navy); font-size: 15px; }
.blog-hero-note p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }

.topic-nav { position: sticky; top: 76px; z-index: 40; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96); }
.topic-nav-inner { min-height: 62px; display: flex; align-items: center; gap: 9px; overflow-x: auto; scrollbar-width: thin; }
.topic-nav a { flex: 0 0 auto; padding: 8px 12px; border-radius: 99px; color: var(--muted); background: #f1f5f6; font-size: 11px; font-weight: 850; }
.topic-nav a:hover { color: var(--navy); background: var(--pale-teal); }

.blog-main { padding: 78px 0 110px; }
.featured-guide { display: grid; grid-template-columns: 1.08fr .92fr; overflow: hidden; margin-bottom: 82px; border: 1px solid var(--line); border-radius: 24px; background: var(--white); box-shadow: var(--shadow-sm); }
.featured-guide-image { min-height: 410px; }
.featured-guide-image img { width: 100%; height: 100%; object-fit: cover; }
.featured-guide-copy { display: flex; flex-direction: column; justify-content: center; padding: 48px; }
.guide-label { display: inline-flex; align-items: center; gap: 8px; color: var(--teal-dark); font-size: 10px; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.guide-label::before { content: ""; width: 22px; height: 2px; background: var(--teal); }
.featured-guide h2 { margin: 16px 0 15px; font-size: clamp(30px,3.5vw,44px); line-height: 1.12; }
.featured-guide h2 a:hover { color: var(--teal-dark); }
.featured-guide p { margin-bottom: 24px; color: var(--muted); line-height: 1.7; }
.guide-link { display: inline-flex; align-items: center; gap: 7px; color: var(--blue-dark); font-size: 13px; font-weight: 850; }
.guide-link::after { content: "→"; transition: transform .2s ease; }
.guide-link:hover::after { transform: translateX(3px); }

.topic-section { scroll-margin-top: 155px; }
.topic-section + .topic-section { margin-top: 80px; padding-top: 76px; border-top: 1px solid var(--line); }
.topic-section-head { display: grid; grid-template-columns: 1fr .7fr; align-items: end; gap: 50px; margin-bottom: 30px; }
.topic-section-head h2 { margin: 9px 0 0; font-size: clamp(31px,4vw,43px); }
.topic-section-head p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }
.guide-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.guide-card { min-height: 280px; display: flex; flex-direction: column; padding: 25px; border: 1px solid var(--line); border-radius: 17px; background: var(--white); transition: transform .2s ease,border-color .2s ease,box-shadow .2s ease; }
.guide-card:hover { transform: translateY(-3px); border-color: #b8cad6; box-shadow: var(--shadow-sm); }
.guide-card-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 22px; color: var(--muted); font-size: 9px; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }
.guide-card-number { width: 31px; height: 31px; display: grid; place-items: center; border-radius: 9px; color: var(--teal-dark); background: var(--pale-teal); font-size: 10px; }
.guide-card h3 { margin: 0 0 12px; font-size: 20px; line-height: 1.25; }
.guide-card h3 a:hover { color: var(--teal-dark); }
.guide-card p { margin: 0 0 22px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.guide-card .guide-link { margin-top: auto; }

.article-breadcrumb { padding: 22px 0; border-bottom: 1px solid var(--line); background: var(--white); }
.article-breadcrumb ol { display: flex; flex-wrap: wrap; gap: 7px; margin: 0; padding: 0; color: var(--muted); list-style: none; font-size: 11px; }
.article-breadcrumb li:not(:last-child)::after { content: "/"; margin-left: 7px; color: #a5b1bb; }
.article-breadcrumb a:hover { color: var(--teal-dark); }
.article-hero { padding: 76px 0 48px; background: var(--white); }
.article-hero-inner { max-width: 900px; }
.article-hero h1 { margin: 18px 0 22px; font-size: clamp(42px,5.5vw,66px); font-weight: 850; letter-spacing: -.052em; }
.article-deck { max-width: 820px; margin: 0 0 26px; color: #526173; font-size: 19px; line-height: 1.7; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 9px 16px; color: var(--muted); font-size: 11px; font-weight: 750; }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-meta span + span::before { content: ""; width: 4px; height: 4px; margin-right: 10px; border-radius: 50%; background: #9aabb8; }
.article-figure { width: min(1180px,calc(100% - 48px)); height: min(54vw,580px); min-height: 330px; margin: 0 auto; overflow: hidden; border-radius: 24px; background: var(--pale-blue); }
.article-figure img { width: 100%; height: 100%; object-fit: cover; }
.article-layout { display: grid; grid-template-columns: minmax(0,760px) 270px; justify-content: center; align-items: start; gap: 80px; padding-top: 72px; padding-bottom: 100px; }
.article-content { min-width: 0; }
.article-content > p:first-child { color: var(--ink); font-size: 20px; line-height: 1.72; }
.article-content h2 { scroll-margin-top: 110px; margin: 54px 0 16px; font-size: 31px; line-height: 1.2; }
.article-content p { margin-bottom: 20px; color: #3e4b5d; font-size: 16px; line-height: 1.82; }
.article-content ul, .article-content ol { display: grid; gap: 11px; margin: 22px 0 27px; padding-left: 24px; color: #3e4b5d; }
.article-content li { padding-left: 4px; line-height: 1.72; }
.article-content li::marker { color: var(--teal); font-weight: 850; }
.article-tip { margin: 34px 0; padding: 24px 26px; border-left: 4px solid var(--teal); border-radius: 0 13px 13px 0; background: var(--pale-teal); }
.article-tip strong { display: block; margin-bottom: 6px; color: var(--navy); }
.article-tip p { margin: 0; font-size: 14px; }
.article-disclaimer { margin-top: 46px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted) !important; font-size: 12px !important; line-height: 1.65 !important; }
.article-sidebar { position: sticky; top: 110px; }
.article-toc { padding: 22px; border: 1px solid var(--line); border-radius: 15px; background: var(--white); }
.article-toc h2 { margin-bottom: 15px; font-size: 13px; letter-spacing: .02em; }
.article-toc ol { display: grid; gap: 11px; margin: 0; padding: 0; list-style: none; counter-reset: toc; }
.article-toc li { display: grid; grid-template-columns: 20px 1fr; gap: 5px; color: var(--muted); font-size: 11px; line-height: 1.45; counter-increment: toc; }
.article-toc li::before { content: counter(toc,decimal-leading-zero); color: var(--teal-dark); font-size: 9px; font-weight: 900; }
.article-toc a:hover { color: var(--navy); }
.article-side-cta { margin-top: 15px; padding: 22px; border-radius: 15px; color: var(--white); background: var(--navy); }
.article-side-cta strong { display: block; margin-bottom: 7px; font-size: 14px; }
.article-side-cta p { margin: 0 0 16px; color: #c6d4e0; font-size: 11px; line-height: 1.6; }
.article-side-cta .button { width: 100%; min-height: 40px; font-size: 11px; }

.article-promo { padding: 78px 0; color: var(--white); background: var(--navy); }
.article-promo-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 50px; }
.article-promo h2 { max-width: 760px; margin: 0 0 11px; color: var(--white); font-size: clamp(31px,4vw,46px); }
.article-promo p { max-width: 700px; margin: 0; color: #c6d4e0; line-height: 1.7; }
.article-promo-actions { display: flex; flex-direction: column; gap: 10px; min-width: 205px; }
.related-guides { padding: 86px 0 105px; background: #f3f7f8; }
.related-guides-head { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 30px; }
.related-guides-head h2 { margin: 8px 0 0; font-size: 35px; }
.related-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 19px; }

.blog-footer { border-top: 1px solid var(--line); background: var(--white); }
.blog-footer-top { display: grid; grid-template-columns: 1.5fr repeat(3,1fr); gap: 55px; padding-top: 62px; padding-bottom: 48px; }
.blog-footer-brand p { max-width: 330px; margin: 18px 0 0; color: var(--muted); font-size: 13px; line-height: 1.65; }
.blog-footer-links { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.blog-footer-links h2 { margin-bottom: 4px; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; }
.blog-footer-links a { color: var(--muted); font-size: 12px; }
.blog-footer-links a:hover { color: var(--navy); }
.blog-footer-bottom { display: flex; justify-content: space-between; gap: 40px; padding-top: 22px; padding-bottom: 25px; border-top: 1px solid var(--line); }
.blog-footer-bottom p { margin: 0; color: var(--muted); font-size: 10px; }
.blog-footer-bottom p:last-child { max-width: 670px; text-align: right; }

@media (max-width: 1040px) {
  .blog-nav { gap: 17px; }
  .blog-hero-inner { gap: 40px; }
  .guide-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .article-layout { grid-template-columns: minmax(0,700px) 240px; gap: 42px; }
  .blog-footer-top { grid-template-columns: 1.5fr repeat(2,1fr); }
  .blog-footer-links:last-child { grid-column: 2; }
}

@media (max-width: 820px) {
  .blog-header-inner { min-height: 68px; }
  .blog-nav { display: none; }
  .blog-header-cta { margin-left: auto; }
  .topic-nav { top: 68px; }
  .blog-hero { padding: 70px 0 58px; }
  .blog-hero-inner, .topic-section-head { grid-template-columns: 1fr; gap: 25px; }
  .featured-guide { grid-template-columns: 1fr; }
  .featured-guide-image { min-height: 340px; }
  .featured-guide-copy { padding: 36px; }
  .article-hero { padding-top: 58px; }
  .article-layout { grid-template-columns: 1fr; padding-top: 55px; }
  .article-sidebar { position: static; grid-row: 1; }
  .article-side-cta { display: none; }
  .article-promo-inner { grid-template-columns: 1fr; gap: 30px; }
  .article-promo-actions { flex-direction: row; }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .related-grid .guide-card:last-child { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  .blog-header-cta { display: none; }
  .blog-mobile-cta { display: inline-flex; margin-left: auto; }
  .blog-hero h1 { font-size: 45px; }
  .blog-hero-note { padding: 19px; }
  .topic-nav-inner { min-height: 56px; }
  .blog-main { padding-top: 55px; }
  .featured-guide { margin-bottom: 60px; }
  .featured-guide-image { min-height: 240px; }
  .featured-guide-copy { padding: 27px 23px 30px; }
  .guide-grid, .related-grid { grid-template-columns: 1fr; }
  .related-grid .guide-card:last-child { grid-column: auto; }
  .topic-section + .topic-section { margin-top: 58px; padding-top: 55px; }
  .article-hero h1 { font-size: 42px; }
  .article-deck { font-size: 17px; }
  .article-figure { width: calc(100% - 30px); min-height: 250px; border-radius: 16px; }
  .article-layout { gap: 34px; padding-bottom: 75px; }
  .article-content > p:first-child { font-size: 18px; }
  .article-content h2 { margin-top: 45px; font-size: 27px; }
  .article-content p { font-size: 15px; }
  .article-promo-actions { align-items: stretch; flex-direction: column; }
  .related-guides-head { align-items: flex-start; flex-direction: column; }
  .blog-footer-top { grid-template-columns: 1fr 1fr; gap: 35px 22px; }
  .blog-footer-brand { grid-column: 1 / -1; }
  .blog-footer-links:last-child { grid-column: auto; }
  .blog-footer-bottom { align-items: flex-start; flex-direction: column; gap: 8px; }
  .blog-footer-bottom p:last-child { text-align: left; }
}