.article-hero { background: var(--white); padding: var(--sp-10) var(--sp-16) var(--sp-8); position: relative; }
.article-hero-inner { position: relative; z-index: 1; max-width: 720px; margin: 0 auto; }
.article-breadcrumb { font-size: 12px; color: var(--slate-500); margin-bottom: var(--sp-4); }
.article-breadcrumb a { color: var(--blue-500); text-decoration: none; font-weight: 500; }
.article-breadcrumb a:hover { text-decoration: underline; }
.article-breadcrumb span { margin: 0 var(--sp-2); color: var(--slate-400); }
.article-hero h1 { font-size: clamp(28px, 4vw, 36px); font-weight: 800; color: var(--navy-900); line-height: 1.2; letter-spacing: -0.5px; margin-bottom: var(--sp-6); }
.article-byline-row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-4) var(--sp-6); margin-bottom: var(--sp-6); }
.article-byline-row .author-block { display: flex; align-items: center; gap: var(--sp-3); }
.article-byline-row .author-avatar { width: 40px; height: 40px; border-radius: 50%; background: linear-gradient(135deg, var(--blue-200) 0%, var(--blue-300) 100%); display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; color: var(--navy-900); flex-shrink: 0; object-fit: cover; }
.article-byline-row .author-avatar img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; }
.article-byline-row .author-name { font-size: 14px; font-weight: 600; color: var(--navy-900); }
.article-byline-row .article-share-btn { font-family: var(--font); font-size: 13px; font-weight: 600; color: var(--slate-500); background: none; border: none; cursor: pointer; padding: 0; }
.article-byline-row .article-share-btn:hover { color: var(--blue-500); }
.article-byline-row .article-date { font-size: 13px; color: var(--slate-500); }
.article-subscribe-top { max-width: 720px; margin: 0 auto var(--sp-10); padding: var(--sp-5) 0; border-top: 1px solid var(--slate-200); border-bottom: 1px solid var(--slate-200); display: grid; grid-template-columns: 1fr auto; gap: var(--sp-4); align-items: center; }
.article-subscribe-top h3 { font-size: 15px; font-weight: 700; color: var(--navy-900); margin-bottom: 2px; }
.article-subscribe-top p { font-size: 13px; color: var(--slate-500); margin: 0; }
.article-body { padding: var(--sp-8) var(--sp-16) var(--sp-16); background: var(--white); }
.article-content { max-width: 720px; margin: 0 auto; }
.article-content h2 { font-size: 26px; font-weight: 800; letter-spacing: -0.5px; color: var(--navy-900); margin: var(--sp-12) 0 var(--sp-4); line-height: 1.25; }
.article-content h3 { font-size: 20px; font-weight: 700; color: var(--navy-900); margin: var(--sp-8) 0 var(--sp-3); line-height: 1.3; }
.article-content p { font-size: 17px; line-height: 1.75; color: var(--slate-500); margin-bottom: var(--sp-5); }
.article-content p:first-of-type,
.article-content p:nth-of-type(2) { color: var(--black); }
.article-content ul { margin: 0 0 var(--sp-5); padding-left: 1.4em; font-size: 17px; line-height: 1.75; color: var(--slate-500); }
.article-content li { margin-bottom: var(--sp-2); }
.article-content li::marker { color: var(--blue-400); }
.article-content strong { color: var(--navy-900); font-weight: 700; }
.article-content a { color: var(--blue-500); text-decoration: none; font-weight: 600; }
.article-content a:hover { text-decoration: underline; }
.article-content .step-num { font-weight: 700; font-size: inherit; color: var(--navy-900); }
.article-cta { background: linear-gradient(135deg, var(--navy-800) 0%, var(--navy-700) 100%); color: var(--white); padding: var(--sp-6) var(--sp-8); border-radius: var(--r-lg); margin-top: var(--sp-16); display: grid; grid-template-columns: 1fr auto; gap: var(--sp-6); align-items: center; }
.article-cta h3 { font-size: 20px; font-weight: 700; margin-bottom: var(--sp-2); color: var(--white); }
.article-cta p { font-size: 14px; color: var(--white); margin: 0; }
.article-cta .btn { flex-shrink: 0; }
.article-author-bio { display: grid; grid-template-columns: auto 1fr; gap: var(--sp-5); align-items: start; padding: var(--sp-6) 0; margin-top: var(--sp-10); border-top: 1px solid var(--slate-200); }
.article-author-bio .author-avatar { width: 56px; height: 56px; border-radius: 50%; background: linear-gradient(135deg, var(--blue-200) 0%, var(--blue-300) 100%); display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 700; color: var(--navy-900); flex-shrink: 0; object-fit: cover; }
.article-author-bio .author-avatar img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; }
.article-author-bio .author-name { font-size: 15px; font-weight: 700; color: var(--navy-900); margin-bottom: 2px; }
.article-author-bio .author-title { font-size: 12px; color: var(--blue-500); font-weight: 600; margin-bottom: var(--sp-2); }
.article-author-bio .author-bio { font-size: 14px; line-height: 1.6; color: var(--slate-500); }
.author-social { display: flex; align-items: center; gap: var(--sp-3); }
.author-social a { display: flex; align-items: center; justify-content: center; color: var(--slate-500); transition: color var(--dur-fast); }
.author-social a:hover { color: var(--blue-500); }
.author-social svg { width: 18px; height: 18px; }
.article-byline-row .author-social { margin-left: var(--sp-2); }
.article-author-bio .author-social { margin-top: var(--sp-3); }
.faq-accordion { margin: var(--sp-6) 0; }
.faq-accordion .faq-item { border: 1px solid var(--slate-200); border-radius: var(--r-md); margin-bottom: var(--sp-2); overflow: hidden; }
.faq-accordion .faq-item:last-child { margin-bottom: 0; }
.faq-accordion .faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4); padding: var(--sp-4) var(--sp-5); font-family: var(--font); font-size: 16px; font-weight: 700; color: var(--navy-900); text-align: left; background: var(--white); border: none; cursor: pointer; transition: background var(--dur-fast); }
.faq-accordion .faq-question:hover { background: var(--slate-50); }
.faq-accordion .faq-question::after { content: ''; flex-shrink: 0; width: 12px; height: 12px; border-right: 2px solid var(--slate-400); border-bottom: 2px solid var(--slate-400); transform: rotate(45deg); transition: transform var(--dur-default); }
.faq-accordion .faq-item.is-open .faq-question::after { transform: rotate(-135deg); }
.faq-accordion .faq-answer { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--dur-deliberate); }
.faq-accordion .faq-item.is-open .faq-answer { grid-template-rows: 1fr; }
.faq-accordion .faq-answer-inner { overflow: hidden; }
.faq-accordion .faq-answer p { font-size: 15px; line-height: 1.65; color: var(--slate-500); margin: 0; padding: 0 var(--sp-5) var(--sp-4); }
.faq-accordion .faq-item.is-open .faq-answer p { padding-top: var(--sp-3); padding-bottom: var(--sp-5); }
.article-subscribe-bottom { max-width: 720px; margin: var(--sp-12) auto 0; padding-top: var(--sp-8); border-top: 1px solid var(--slate-200); }
.article-subscribe-bottom .article-subscribe-inner { display: grid; grid-template-columns: 1fr auto; gap: var(--sp-4); align-items: center; margin-bottom: var(--sp-10); }
.article-subscribe-bottom h3 { font-size: 15px; font-weight: 700; color: var(--navy-900); margin-bottom: 2px; }
.article-subscribe-bottom .article-subscribe-inner p { font-size: 13px; color: var(--slate-500); margin: 0; }
.article-related { margin-top: var(--sp-8); }
.article-related h3 { font-size: 18px; font-weight: 700; color: var(--navy-900); margin-bottom: var(--sp-5); }
.article-related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); }
.article-related-card { display: block; text-decoration: none; color: inherit; }
.article-related-card .related-image { aspect-ratio: 16/10; background: linear-gradient(135deg, var(--blue-100) 0%, var(--blue-50) 100%); border-radius: var(--r-md); margin-bottom: var(--sp-3); }
.article-related-card .related-date { font-size: 11px; font-weight: 600; color: var(--slate-500); margin-bottom: var(--sp-1); }
.article-related-card .related-title { font-size: 14px; font-weight: 700; color: var(--navy-900); line-height: 1.35; }
@media (max-width: 900px) { .article-related-grid { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .article-body { padding: var(--sp-10) var(--sp-4); } .article-cta { grid-template-columns: 1fr; text-align: center; } .article-author-bio { grid-template-columns: 1fr; } .article-subscribe-top, .article-subscribe-bottom .article-subscribe-inner { grid-template-columns: 1fr; } }