*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:Helvetica,Arial,sans-serif;color:#1f2937;background:#fff;line-height:1.7;font-size:16px}
h1,h2,h3,h4{font-family:Helvetica,Arial,sans-serif;font-weight:700;letter-spacing:-0.03em;color:#1a1a2e}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:980px;margin:0 auto;padding:0 24px}

/* Header */
.site-header{background:#ffffff;border-bottom:1px solid #e5e7eb;padding:20px 0}
.header-inner{display:flex;flex-direction:column;align-items:center;position:relative}
.site-brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.site-logo img{max-width:315px;height:auto}
.site-title,.site-tagline{display:none}
.nav-menu{display:flex;gap:20px;margin-top:16px}
.nav-menu a{font-size:14px;color:#1f2937;transition:color .2s}
.nav-menu a:hover{color:#5B5FE6}

/* Mobile menu */
.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.menu-toggle span{display:block;width:24px;height:2px;background:#1f2937;margin:5px 0;transition:all .3s}
.menu-toggle.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
@media(max-width:768px){
  .menu-toggle{display:block;position:absolute;left:24px;top:26px}
  .nav-menu{display:none;flex-direction:column;width:100%;gap:0;background:#fff;padding:12px 0}
  .nav-menu.open{display:flex}
  .nav-menu a{padding:10px 0;border-bottom:1px solid #f0f0f0}
  .site-header{position:relative}
}

/* Cards */
.card-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin:32px 0}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:10px;overflow:hidden;transition:box-shadow .3s}
.card:hover{box-shadow:0 4px 16px rgba(0,0,0,0.08)}
.card a{display:block}
.card-image{background:#f0f0f0;aspect-ratio:16/10;overflow:hidden}
.card-image img{width:100%;height:100%;object-fit:cover}
.card-body{padding:16px}
.card-category{font-size:11px;color:#5B5FE6;font-weight:700;text-transform:uppercase;letter-spacing:0.08em}
.card-title{font-size:18px;font-weight:700;margin:6px 0 8px;line-height:1.2;letter-spacing:-0.03em;color:#1a1a2e}
.card-date{font-size:12px;color:#9ca3af}

.featured-card{margin:32px 0}
.featured-card .card{display:grid;grid-template-columns:1fr 1fr}
.featured-card .card-body{padding:24px;display:flex;flex-direction:column;justify-content:center}
.featured-card .card-title{font-size:26px;letter-spacing:-0.03em}

@media(max-width:768px){
  .card-grid{grid-template-columns:1fr}
  .featured-card .card{grid-template-columns:1fr}
}

/* Article */
.article-wrap{max-width:700px;margin:0 auto;padding:40px 24px}
.article-meta{font-size:13px;color:#9ca3af;margin-bottom:8px}
.article-meta span{margin-right:12px}
.article-meta a{color:#5B5FE6}
.article-title{font-size:34px;font-weight:700;line-height:1.15;margin-bottom:20px;letter-spacing:-0.03em;color:#1a1a2e}
.article-image{background:#f0f0f0;border-radius:10px;overflow:hidden;margin-bottom:28px;aspect-ratio:16/9}
.article-image img{width:100%;height:100%;object-fit:cover}
.article-content{line-height:1.8}
.article-content p{margin-bottom:16px}
.article-content h2{font-size:22px;font-weight:700;margin:28px 0 12px;letter-spacing:-0.02em;color:#5B5FE6}
.article-content a{color:#5B5FE6;text-decoration:underline;text-decoration-color:rgba(91,95,230,0.3);text-underline-offset:3px}
.article-content a:hover{text-decoration-color:#5B5FE6}

/* Related */
.related-posts{margin-top:48px;border-top:1px solid #e5e7eb;padding-top:32px}
.related-posts h3{font-size:18px;font-weight:700;margin-bottom:20px}
.related-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media(max-width:768px){.related-grid{grid-template-columns:1fr}}

/* Pages */
.page-wrap{max-width:700px;margin:0 auto;padding:40px 24px}
.page-wrap h1{font-size:32px;font-weight:700;margin-bottom:20px;letter-spacing:-0.03em;color:#1a1a2e}
.page-wrap p{margin-bottom:16px;line-height:1.8}
.page-wrap h2{font-size:22px;font-weight:700;margin:28px 0 12px;letter-spacing:-0.02em;color:#5B5FE6}
.page-wrap ul{margin:0 0 16px 20px}
.page-wrap li{margin-bottom:8px}

/* Category */
.category-header{padding:32px 0 0}
.category-header h1{font-size:30px;font-weight:700;letter-spacing:-0.03em;color:#1a1a2e}

/* Footer */
.site-footer{background:#ffffff;margin-top:48px;padding:40px 0 20px}
.footer-inner{display:flex;flex-direction:column;align-items:center;text-align:center}
.footer-brand{margin-bottom:16px;display:flex;flex-direction:column;align-items:center}
.footer-brand img{max-width:224px;height:auto}
.footer-links{display:flex;gap:20px;margin-bottom:16px}
.footer-links a{font-size:14px;color:#6b7280;transition:color .2s}
.footer-links a:hover{color:#5B5FE6}
.footer-copy{text-align:center;font-size:12px;color:#9ca3af;padding:12px 0}

/* Contact form */
.contact-form{display:flex;flex-direction:column;gap:16px;margin-top:20px}
.contact-form input,.contact-form textarea{font-family:Helvetica,Arial,sans-serif;padding:12px;border:1px solid #e5e7eb;border-radius:8px;font-size:14px}
.contact-form textarea{min-height:140px;resize:vertical}
.contact-form button{background:#5B5FE6;color:#fff;border:none;padding:12px 24px;border-radius:8px;font-family:Helvetica,Arial,sans-serif;font-size:14px;font-weight:600;cursor:pointer;align-self:flex-start}
.contact-form button:hover{background:#4a4ed0}