/* ============================================
   ARQPEDIA — Apple-Inspired Design System v4.0
   Ultra-clean, Sophisticated, Performance-First
   ============================================ */

/* --- Custom Properties --- */
:root {
  --text-primary: #1d1d1f;
  --text-secondary: #424245;
  --text-tertiary: #6e6e73;
  --text-quaternary: #86868b;
  --surface-primary: #fff;
  --surface-secondary: #f5f5f7;
  --surface-tertiary: #fbfbfd;
  --surface-elevated: rgba(255,255,255,.72);
  --border-primary: rgba(0,0,0,.08);
  --border-secondary: rgba(0,0,0,.04);
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --accent-subtle: rgba(0,113,227,.06);
  --green: #1a6b4f;
  --green-hover: #145a42;
  --font-display: 'SF Pro Display', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'SF Pro Text', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-w: 1120px;
  --content-w: 680px;
  --header-h: 48px;
  --ease: cubic-bezier(.4, 0, .2, 1);
  --ease-spring: cubic-bezier(.175, .885, .32, 1.275);
}

/* --- Reset --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-text-size-adjust:100%;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{font-family:var(--font-body);color:var(--text-primary);background:var(--surface-primary);line-height:1.47059;font-weight:400;letter-spacing:-.022em;text-rendering:optimizeLegibility;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--accent-hover)}
h1,h2,h3,h4,h5,h6{font-family:var(--font-display);color:var(--text-primary);line-height:1.08;font-weight:600;letter-spacing:-.003em}
::selection{background:var(--accent);color:#fff}

/* --- Utilities --- */
.container{max-width:var(--max-w);margin:0 auto;padding:0 22px}
.skip-link{position:absolute;top:-100%;left:50%;transform:translateX(-50%);background:var(--accent);color:#fff;padding:12px 24px;z-index:9999;border-radius:12px;font-weight:600;font-size:.875rem}
.skip-link:focus{top:12px;color:#fff}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* --- Reading Progress --- */
.reading-progress{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,var(--accent),#34c759);z-index:10000;transition:width .15s linear;width:0;border-radius:0 2px 2px 0}

/* --- Mobflix Partner Bar --- */
.mobflix-top-bar{background:var(--text-primary);padding:9px 0;text-align:center;font-size:.75rem;letter-spacing:.01em}
.mobflix-top-bar a{color:rgba(255,255,255,.92);display:inline-flex;align-items:center;gap:10px;font-weight:400}
.mobflix-top-bar a:hover{color:#fff}
.mobflix-top-bar span{color:rgba(255,255,255,.68)}
.mobflix-cta{background:var(--green);color:#fff!important;padding:4px 14px;border-radius:980px;font-weight:600;font-size:.6875rem;letter-spacing:.02em;transition:background .2s}
.mobflix-cta:hover{background:var(--green-hover)}

/* --- Header (Apple-style translucent) --- */
.site-header{background:var(--surface-elevated);border-bottom:1px solid var(--border-primary);position:sticky;top:0;z-index:100;backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.logo-link{display:flex;align-items:center;gap:8px}
.logo-link img{height:32px;width:auto}
.logo-text{font-family:var(--font-display);font-size:1.25rem;font-weight:600;color:var(--text-primary);letter-spacing:-.02em}

/* --- Navigation --- */
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{padding:6px 12px;font-size:.8125rem;font-weight:400;color:var(--text-tertiary);border-radius:8px;transition:all .2s var(--ease);letter-spacing:-.01em}
.main-nav a:hover{color:var(--text-primary);background:rgba(0,0,0,.04)}
.main-nav a.active{color:var(--text-primary);font-weight:500}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:6px;border-radius:8px;transition:background .2s}
.menu-toggle:hover{background:rgba(0,0,0,.04)}
.menu-toggle svg{width:20px;height:20px;color:var(--text-primary)}

/* --- Homepage Hero --- */
.hero{padding:80px 0 56px;text-align:center}
.hero h1{font-size:3.5rem;font-weight:700;margin-bottom:12px;letter-spacing:-.04em;line-height:1.05;max-width:720px;margin-left:auto;margin-right:auto;background:linear-gradient(180deg,var(--text-primary) 0%,var(--text-secondary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:1.3125rem;color:var(--text-tertiary);max-width:480px;margin:0 auto 32px;line-height:1.381;font-weight:400;letter-spacing:.011em}
.hero .accent{-webkit-text-fill-color:var(--accent)}
.btn-primary{display:inline-flex;align-items:center;gap:6px;background:var(--accent);color:#fff;padding:12px 24px;border-radius:980px;font-weight:400;font-size:1.0625rem;transition:all .3s var(--ease);border:none;cursor:pointer;letter-spacing:-.01em}
.btn-primary:hover{background:var(--accent-hover);color:#fff;transform:scale(1.02)}

/* --- Section Titles --- */
.section-title{font-size:1.5rem;font-family:var(--font-display);font-weight:600;letter-spacing:-.025em;color:var(--text-primary);margin-bottom:24px;padding-bottom:0;border-bottom:none;display:block;line-height:1.16}

/* --- Post Grid --- */
.posts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:56px}
.post-card{background:var(--surface-primary);overflow:hidden;border-radius:16px;transition:transform .4s var(--ease),box-shadow .4s var(--ease)}
.post-card:hover{transform:translateY(-4px);box-shadow:0 8px 30px rgba(0,0,0,.08)}
.post-card-image{aspect-ratio:3/2;overflow:hidden;background:var(--surface-secondary);position:relative;border-radius:16px 16px 0 0}
.post-card-image img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.post-card:hover .post-card-image img{transform:scale(1.04)}
.post-card-body{padding:16px 20px 20px}
.post-card-category{display:inline-block;font-size:.6875rem;font-weight:500;text-transform:uppercase;letter-spacing:.04em;color:var(--text-quaternary);margin-bottom:6px}
.post-card-category:hover{color:var(--accent)}
.post-card-title{font-size:1rem;line-height:1.25;margin-bottom:6px;font-weight:600;letter-spacing:-.02em}
.post-card-title a{color:var(--text-primary);transition:color .2s}
.post-card-title a:hover{color:var(--accent)}
.post-card-excerpt{font-size:.875rem;color:var(--text-tertiary);line-height:1.43;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card-meta{display:flex;align-items:center;gap:8px;font-size:.75rem;color:var(--text-quaternary)}

/* --- Featured Post --- */
.featured-post{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;margin-bottom:56px;padding-bottom:56px;border-bottom:1px solid var(--border-primary)}
.featured-post-image{overflow:hidden;aspect-ratio:4/3;border-radius:20px;background:var(--surface-secondary)}
.featured-post-image img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.featured-post:hover .featured-post-image img{transform:scale(1.03)}
.featured-post-body .post-card-category{margin-bottom:12px}
.featured-post-body h2{font-size:2rem;margin-bottom:12px;line-height:1.1;letter-spacing:-.03em;font-weight:600}
.featured-post-body p{color:var(--text-secondary);line-height:1.52;margin-bottom:20px;font-size:1.0625rem}

/* --- Breadcrumbs --- */
.breadcrumbs{padding:16px 0;font-size:.8125rem;color:var(--text-quaternary)}
.breadcrumbs a{color:var(--text-tertiary)}
.breadcrumbs a:hover{color:var(--accent)}
.breadcrumbs span{margin:0 4px;opacity:.5}

/* --- Article Header --- */
.article-header{padding:40px 0 28px;text-align:center;max-width:800px;margin:0 auto}
.article-header .post-card-category{margin-bottom:16px;font-size:.75rem;color:var(--text-quaternary)}
.article-header h1{font-size:2.5rem;margin-bottom:16px;letter-spacing:-.03em;line-height:1.08;font-weight:700;max-width:720px;margin-left:auto;margin-right:auto}
.article-header .article-meta,.article-meta{display:flex;justify-content:center;flex-wrap:wrap;gap:20px;color:var(--text-quaternary);font-size:.8125rem;padding-top:16px;border-top:1px solid var(--border-primary)}
.article-meta span{display:flex;align-items:center;gap:4px}

/* --- Article Hero --- */
.article-cover,.article-hero{max-width:960px;margin:0 auto 40px;overflow:hidden;border-radius:20px}
.article-cover img,.article-hero img{width:100%;aspect-ratio:21/9;object-fit:cover}

/* --- Article Layout --- */
.article-layout{max-width:1200px;margin:0 auto;padding:0 22px;display:grid;grid-template-columns:1fr 300px;gap:32px}

/* --- Article Content --- */
.article-content{max-width:var(--content-w);margin:0 auto;padding-bottom:80px}
.article-content h2{font-size:1.75rem;margin:48px 0 16px;letter-spacing:-.025em;font-weight:600;line-height:1.1}
.article-content h3{font-size:1.25rem;margin:36px 0 12px;font-weight:600;letter-spacing:-.02em;line-height:1.16}
.article-content p{margin-bottom:20px;color:var(--text-secondary);font-size:1.0625rem;line-height:1.52941}
.article-content ul,.article-content ol{margin:0 0 20px 20px;color:var(--text-secondary)}
.article-content li{margin-bottom:6px;line-height:1.52941;font-size:1.0625rem}
.article-content a{color:var(--accent);text-decoration:underline;text-decoration-color:rgba(0,113,227,.3);text-underline-offset:2px;transition:text-decoration-color .2s}
.article-content a:hover{text-decoration-color:var(--accent)}

/* --- Blockquotes --- */
.article-content blockquote{border:none;border-left:3px solid var(--accent);padding:16px 24px;margin:28px 0;background:var(--accent-subtle);border-radius:0 12px 12px 0;font-style:normal;color:var(--text-secondary);font-size:1.125rem;line-height:1.5}
.article-content blockquote p{margin-bottom:0;font-size:inherit;color:inherit}

/* --- Figures --- */
.article-content figure{margin:28px 0}
.article-content figure img{width:100%;border-radius:12px}
.article-content figcaption{font-size:.8125rem;color:var(--text-quaternary);margin-top:8px;line-height:1.38;text-align:center}
.article-content img{margin:20px 0;border-radius:12px}

/* --- Tables --- */
.article-content table{width:100%;border-collapse:collapse;margin:28px 0;font-size:.9375rem;border-radius:12px;overflow:hidden}
.article-content th{background:var(--surface-secondary);color:var(--text-primary);padding:12px 16px;text-align:left;font-weight:600;font-size:.8125rem;letter-spacing:-.01em;border-bottom:1px solid var(--border-primary)}
.article-content td{padding:12px 16px;border-bottom:1px solid var(--border-secondary);color:var(--text-secondary)}
.article-content tr:last-child td{border-bottom:none}
.article-content tr:hover td{background:var(--surface-tertiary)}
.table-responsive{overflow-x:auto;margin:28px 0;border-radius:12px;border:1px solid var(--border-primary)}

/* --- Code --- */
.article-content code{background:var(--surface-secondary);padding:2px 6px;border-radius:6px;font-size:.875em}
.article-content pre{background:var(--text-primary);color:#e8e8e8;padding:20px;border-radius:12px;overflow-x:auto;margin:28px 0}
.article-content pre code{background:none;padding:0;color:inherit}

/* --- TOC --- */
.toc-list,.toc{background:var(--surface-secondary);border:none;border-radius:16px;padding:24px 28px;margin:28px 0}
.toc-list h3,.toc-title{font-size:.8125rem;font-family:var(--font-body);font-weight:600;margin-bottom:12px;color:var(--text-tertiary);letter-spacing:-.01em}
.toc-list ol,.toc ol{padding-left:0;list-style:none;counter-reset:toc}
.toc-list li,.toc li{margin:4px 0;counter-increment:toc;padding:4px 0}
.toc-list li::before,.toc li::before{content:counter(toc) ".";color:var(--text-quaternary);margin-right:8px;font-size:.875rem;font-weight:500}
.toc-list a,.toc a{color:var(--text-secondary);font-size:.9375rem;transition:color .2s}
.toc-list a:hover,.toc a:hover{color:var(--accent)}

/* --- Internal Links --- */
.internal-link{background:var(--surface-secondary);padding:14px 18px;border-radius:12px;margin:20px 0;border:none}
.internal-link a{color:var(--accent);font-weight:500}

/* --- Author Box --- */
.author-box{display:flex;gap:20px;padding:28px;background:var(--surface-secondary);border-radius:16px;margin:40px 0;align-items:center}
.author-box .author-avatar{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--accent),#34c759);flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:1.125rem;font-weight:600;color:#fff;font-family:var(--font-display)}
.author-box h4{font-size:.9375rem;margin-bottom:2px;font-family:var(--font-body);font-weight:600;letter-spacing:-.01em}
.author-box p{font-size:.8125rem;color:var(--text-tertiary);line-height:1.43;margin-bottom:0}

/* --- Ad Slots (Apple-clean) --- */
.ad-slot{margin:32px 0;padding:0;text-align:center;min-height:90px;display:flex;align-items:center;justify-content:center;background:var(--surface-secondary);border-radius:16px;overflow:hidden}

/* --- Mobflix Inline Banner --- */
.mobflix-inline-banner{margin:32px 0;border:none;border-radius:16px;overflow:hidden;background:var(--surface-secondary)}
.mobflix-inline-content{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;gap:16px}
.mobflix-inline-content .mobflix-text strong{display:block;font-size:.9375rem;margin-bottom:2px;color:var(--text-primary);font-weight:600;letter-spacing:-.01em}
.mobflix-inline-content .mobflix-text span{font-size:.8125rem;color:var(--text-tertiary)}
.mobflix-inline-content .mobflix-cta-btn{background:var(--green);color:#fff;padding:10px 22px;border-radius:980px;font-size:.8125rem;font-weight:500;white-space:nowrap;transition:all .3s var(--ease);letter-spacing:-.01em}
.mobflix-inline-content .mobflix-cta-btn:hover{background:var(--green-hover);color:#fff;transform:scale(1.02)}
.mobflix-banner{text-align:center;margin:32px 0;padding:20px;background:var(--surface-secondary);border-radius:16px}
.mobflix-banner img{margin:0 auto;max-width:100%;height:auto}

/* --- CTA Box --- */
.cta-box{background:var(--text-primary);color:#fff;padding:36px;border-radius:20px;margin:40px 0;text-align:center}
.cta-box h3{color:#fff;font-size:1.375rem;margin-bottom:8px;font-weight:600;letter-spacing:-.02em}
.cta-box p{color:rgba(255,255,255,.65);margin-bottom:16px;font-size:.9375rem}
.cta-box .btn-cta{display:inline-block;background:#fff;color:var(--text-primary);padding:12px 24px;border-radius:980px;font-weight:500;font-size:.9375rem;transition:all .3s var(--ease)}
.cta-box .btn-cta:hover{background:var(--accent);color:#fff;transform:scale(1.02)}

/* --- Related Posts --- */
.related-posts{padding:56px 0;border-top:1px solid var(--border-primary)}
.related-posts h2,.related-posts h3{font-size:1.5rem;font-family:var(--font-display);font-weight:600;letter-spacing:-.025em;color:var(--text-primary);margin-bottom:24px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-posts .posts-grid,.related-grid{margin-bottom:0}

/* --- Sidebar --- */
.sidebar{position:sticky;top:80px;align-self:start;min-width:0}
.sidebar-widget{background:var(--surface-secondary);border:none;border-radius:16px;padding:20px;margin-bottom:20px}
.sidebar-widget h3{font-size:.8125rem;font-weight:600;margin-bottom:12px;color:var(--text-tertiary);letter-spacing:-.01em}
.sidebar-widget ul{list-style:none;padding:0}
.sidebar-widget li{padding:6px 0;border-bottom:1px solid var(--border-secondary)}
.sidebar-widget li:last-child{border-bottom:none}
.sidebar-widget li a{color:var(--text-secondary);font-size:.875rem}
.sidebar-widget li a:hover{color:var(--accent)}
/* Sidebar enhancements */
.sidebar-figure{margin:16px 0;border-radius:12px;overflow:hidden}
.sidebar-figure img{width:100%;height:auto;border-radius:12px;aspect-ratio:4/3;object-fit:cover}
.sidebar-figure figcaption{font-size:.75rem;color:var(--text-quaternary);margin-top:6px;line-height:1.4;text-align:center}
.sidebar-text{font-size:.875rem;color:var(--text-tertiary);line-height:1.5;margin:16px 0;padding:16px;background:var(--surface-secondary);border-radius:12px}
.sidebar .table-responsive{margin:16px 0}
.sidebar .table-responsive table{font-size:.8125rem}
.sidebar .table-responsive th,.sidebar .table-responsive td{padding:8px 10px}


/* --- Footer --- */
.site-footer{background:var(--surface-secondary);color:var(--text-tertiary);padding:56px 0 28px;margin-top:56px;border-top:1px solid var(--border-primary)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px;padding-bottom:40px;border-bottom:1px solid var(--border-primary)}
.footer-brand .logo-text{color:var(--text-primary);font-size:1.125rem;margin-bottom:12px;display:block}
.footer-brand p{font-size:.8125rem;line-height:1.43;color:var(--text-quaternary)}
.site-footer h4,.footer-col h4{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-quaternary);margin-bottom:12px}
.site-footer a,.footer-col a{color:var(--text-tertiary);font-size:.875rem}
.site-footer a:hover,.footer-col a:hover{color:var(--accent)}
.footer-links,.footer-col ul{list-style:none;padding:0}
.footer-links li,.footer-col li{margin-bottom:6px}
.footer-bottom{text-align:center;font-size:.75rem;color:var(--text-quaternary);padding-top:20px;display:flex;justify-content:space-between;align-items:center}
.footer-social{display:flex;gap:12px}
.footer-social a{color:var(--text-quaternary)}
.footer-social a:hover{color:var(--accent)}

/* --- Pagination --- */
.pagination{display:flex;justify-content:center;gap:6px;padding:56px 0}
.pagination a,.pagination span{padding:8px 14px;font-size:.875rem;border:none;border-radius:10px;color:var(--text-secondary);transition:all .2s var(--ease);background:transparent}
.pagination a:hover{background:var(--surface-secondary);color:var(--text-primary)}
.pagination .current{background:var(--accent);color:#fff}

/* --- Category Page --- */
.category-header{padding:40px 0 28px}
.category-header h1{font-size:2rem;margin-bottom:8px;letter-spacing:-.03em;font-weight:700}
.category-header p{color:var(--text-tertiary);font-size:1.0625rem}

/* --- Load More --- */
.load-more-section{text-align:center;padding:32px 0 56px}

/* ============================================
   RESPONSIVE — Every Device, Every Screen
   ============================================ */

/* Tablets landscape */
@media (max-width:1024px) {
  .posts-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .featured-post{grid-template-columns:1fr;gap:32px}
  .article-layout{grid-template-columns:1fr}
  .sidebar{position:static}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .related-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .article-header h1{font-size:2rem}
  .hero h1{font-size:2.5rem}
}

/* Tablets portrait */
@media (max-width:834px) {
  .hero{padding:56px 0 40px}
  .hero h1{font-size:2.25rem}
  .hero p{font-size:1.125rem}
  .article-header h1{font-size:1.875rem}
  .section-title{font-size:1.25rem}
}

/* Mobile */
@media (max-width:768px) {
  :root{--header-h:44px}
  .container{padding:0 16px}
  .main-nav{display:none;position:fixed;top:var(--header-h);left:0;right:0;bottom:0;background:var(--surface-elevated);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);flex-direction:column;padding:20px 16px;gap:2px;overflow-y:auto;z-index:99}
  .main-nav.open{display:flex}
  .main-nav a{padding:12px 16px;font-size:1.0625rem;border-radius:12px;font-weight:400}
  .menu-toggle{display:flex;align-items:center;justify-content:center}
  .hero{padding:40px 0 32px}
  .hero h1{font-size:2rem;letter-spacing:-.035em}
  .hero p{font-size:1rem;margin-bottom:24px}
  .posts-grid{grid-template-columns:1fr;gap:20px}
  .post-card{border-radius:12px}
  .post-card-image{border-radius:12px 12px 0 0;aspect-ratio:16/10}
  .article-header{padding:24px 0 20px}
  .article-header h1{font-size:1.625rem;letter-spacing:-.025em}
  .article-meta{gap:12px;font-size:.75rem}
  .article-cover,.article-hero{border-radius:12px}
  .article-cover img,.article-hero img{aspect-ratio:16/9}
  .article-content{padding-bottom:48px}
  .article-content h2{font-size:1.375rem;margin-top:36px}
  .article-content h3{font-size:1.125rem}
  .article-content p,.article-content li{font-size:1rem;line-height:1.52}
  .article-content blockquote{padding:14px 18px;font-size:1rem;border-radius:0 10px 10px 0}
  .article-content figure img,.article-content img{border-radius:10px}
  .author-box{flex-direction:column;text-align:center;padding:20px;border-radius:12px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-bottom{flex-direction:column;gap:10px;text-align:center}
  .related-grid{grid-template-columns:1fr;gap:20px}
  .featured-post-body h2{font-size:1.375rem}
  .mobflix-inline-content{flex-direction:column;text-align:center;gap:12px}
  .toc-list,.toc{padding:18px;border-radius:12px}
  .ad-slot{border-radius:12px;margin:24px 0}
  .mobflix-inline-banner{border-radius:12px}
  .cta-box{border-radius:16px;padding:28px 20px}
  .btn-primary{font-size:1rem;padding:11px 22px}
  .section-title{font-size:1.25rem;margin-bottom:20px}
}

/* Small phones */
@media (max-width:480px) {
  .article-header h1{font-size:1.375rem}
  .hero h1{font-size:1.625rem}
  .mobflix-top-bar{font-size:.6875rem;padding:7px 0}
  .mobflix-top-bar .mobflix-cta{display:none}
  .post-card-body{padding:12px 16px 16px}
  .post-card-title{font-size:.9375rem}
  .featured-post-body h2{font-size:1.25rem}
  .article-content h2{font-size:1.25rem}
  .article-content h3{font-size:1.0625rem}
  .footer-brand p{font-size:.75rem}
}

/* Very small phones */
@media (max-width:375px) {
  .article-header h1{font-size:1.25rem}
  .hero h1{font-size:1.5rem}
  .hero p{font-size:.9375rem}
  .container{padding:0 12px}
}

/* Large desktops */
@media (min-width:1440px) {
  .hero h1{font-size:4rem}
  .article-header h1{font-size:3rem}
  .posts-grid{gap:28px}
  .container{max-width:1200px}
}

/* Ultra-wide */
@media (min-width:1920px) {
  .hero h1{font-size:4.5rem}
  .container{max-width:1320px}
}

/* --- Scroll Target Offset --- */
[id]{scroll-margin-top:calc(var(--header-h) + 20px)}

/* --- Focus --- */
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px}

/* --- Print --- */
@media print{
  .site-header,.site-footer,.mobflix-top-bar,.ad-slot,.mobflix-inline-banner,.mobflix-banner,.reading-progress,.toc-list,.toc,.related-posts,.breadcrumbs,.sidebar,.cta-box{display:none}
  .article-content{max-width:100%}
  body{color:#000;background:#fff}
}

/* --- Animations (Apple-style subtle) --- */
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@media (prefers-reduced-motion:no-preference) {
  .post-card{animation:fadeUp .5s var(--ease) both}
  .post-card:nth-child(2){animation-delay:.06s}
  .post-card:nth-child(3){animation-delay:.12s}
  .post-card:nth-child(4){animation-delay:.06s}
  .post-card:nth-child(5){animation-delay:.12s}
  .post-card:nth-child(6){animation-delay:.18s}
}
@media (prefers-reduced-motion:reduce) {*{transition:none!important;animation:none!important}}

/* --- Dark Mode (Apple-style) --- */
@media (prefers-color-scheme:dark) {
  :root{
    --text-primary:#f5f5f7;
    --text-secondary:#a1a1a6;
    --text-tertiary:#86868b;
    --text-quaternary:#6e6e73;
    --surface-primary:#000;
    --surface-secondary:#1c1c1e;
    --surface-tertiary:#2c2c2e;
    --surface-elevated:rgba(28,28,30,.72);
    --border-primary:rgba(255,255,255,.08);
    --border-secondary:rgba(255,255,255,.04);
    --accent:#2997ff;
    --accent-hover:#4db2ff;
    --accent-subtle:rgba(41,151,255,.08)
  }
  .hero h1{background:linear-gradient(180deg,#f5f5f7 0%,#a1a1a6 100%);-webkit-background-clip:text;background-clip:text}
  .site-header{border-bottom-color:var(--border-primary)}
  .ad-slot{background:var(--surface-secondary)}
}


/* --- TOC Widget (Sidebar) --- */
.toc-widget{background:var(--surface-secondary);border:none;border-radius:16px;padding:20px 24px;margin-bottom:20px;position:relative}
.toc-widget h3{font-size:.8125rem;font-family:var(--font-body);font-weight:600;margin-bottom:14px;color:var(--text-tertiary);letter-spacing:-.01em;text-transform:uppercase}
.toc-widget ol{padding-left:0;list-style:none;counter-reset:toc-sidebar}
.toc-widget li{margin:0;counter-increment:toc-sidebar;padding:6px 0;border-bottom:1px solid var(--border-secondary)}
.toc-widget li:last-child{border-bottom:none}
.toc-widget li::before{content:counter(toc-sidebar) ".";color:var(--text-quaternary);margin-right:8px;font-size:.8125rem;font-weight:500;min-width:20px;display:inline-block}
.toc-widget a{color:var(--text-secondary);font-size:.875rem;transition:color .2s var(--ease);line-height:1.4}
.toc-widget a:hover{color:var(--accent)}

/* --- FAQ Accordion --- */
.faq-accordion{margin:20px 0}
.faq-item{border:1px solid var(--border-primary);border-radius:12px;margin-bottom:8px;overflow:hidden;transition:all .2s var(--ease)}
.faq-item:hover{border-color:var(--accent)}
.faq-item summary{padding:16px 20px;font-weight:600;font-size:1rem;color:var(--text-primary);cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;line-height:1.4;font-family:var(--font-display);letter-spacing:-.01em;transition:background .2s var(--ease)}
.faq-item summary:hover{background:var(--surface-secondary)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.25rem;color:var(--text-tertiary);font-weight:300;transition:transform .2s var(--ease);flex-shrink:0;margin-left:12px}
.faq-item[open] summary::after{content:"\2212";color:var(--accent)}
.faq-item[open] summary{background:var(--surface-secondary);border-bottom:1px solid var(--border-secondary)}
.faq-item p{padding:16px 20px;margin:0;color:var(--text-secondary);font-size:.9375rem;line-height:1.58}

/* --- Highlight Quote --- */
.highlight-quote{border:none;border-left:3px solid var(--accent);padding:16px 24px;margin:28px 0;background:var(--accent-subtle);border-radius:0 12px 12px 0;font-style:normal}
.highlight-quote p{margin:0;color:var(--text-secondary);font-size:1.0625rem;line-height:1.52;font-weight:400}

/* --- Mobile adjustments for new components --- */
@media (max-width:734px){
  .toc-widget{padding:16px 18px;border-radius:12px}
  .toc-widget a{font-size:.8125rem}
  .faq-item summary{padding:14px 16px;font-size:.9375rem}
  .faq-item p{padding:14px 16px;font-size:.875rem}
  .highlight-quote{padding:14px 18px;margin:20px 0}
  .highlight-quote p{font-size:1rem}
}

/* --- Print adjustments --- */
@media print{
  .toc-widget{display:block;break-inside:avoid}
  .faq-item{break-inside:avoid}
  .faq-item[open] summary::after{display:none}
}