*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#0a0a0f;--surface:#111118;--card:#16161f;--card-hover:#1c1c28;--border:#252533;--text:#e4e4ec;--text-secondary:#8585a0;--text-muted:#5c5c75;--accent:#00b4d8;--accent-hover:#00d4ff;--accent-glow:rgba(0,180,216,.15);--accent-secondary:#7c3aed;--gradient:linear-gradient(135deg,#00b4d8,#7c3aed);--success:#00c853;--danger:#ff3d57;--radius:8px;--radius-lg:16px;--shadow:0 4px 24px rgba(0,0,0,.4);--font:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;--font-mono:'SF Mono',SFMono-Regular,'Cascadia Code',Consolas,monospace;--max-width:1280px;--header-height:64px}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--accent);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent-hover)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button,input,textarea,select{font:inherit;color:inherit;background:none;border:none;outline:none}
::selection{background:var(--accent);color:var(--bg)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:2px}
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}

/* HEADER */
.site-header{position:sticky;top:0;z-index:100;background:rgba(10,10,15,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);height:var(--header-height)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;letter-spacing:-.02em;color:var(--text)}
.logo span{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.logo svg{flex-shrink:0}
.nav-desktop{display:none;gap:4px}
@media(min-width:900px){.nav-desktop{display:flex}}
.nav-desktop a{padding:8px 14px;border-radius:var(--radius);font-size:.875rem;font-weight:500;color:var(--text-secondary);transition:background .2s,color .2s}
.nav-desktop a:hover,.nav-desktop a.active{color:var(--text);background:var(--card)}
.header-actions{display:flex;align-items:center;gap:8px}
.btn-cta{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;background:var(--accent);color:var(--bg);font-weight:600;font-size:.875rem;border-radius:var(--radius);transition:background .2s,transform .1s;cursor:pointer}
.btn-cta:hover{background:var(--accent-hover);color:var(--bg);transform:translateY(-1px)}
.menu-toggle{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius);cursor:pointer;color:var(--text-secondary);transition:background .2s}
.menu-toggle:hover{background:var(--card)}
@media(min-width:900px){.menu-toggle{display:none}}
.mobile-nav{position:fixed;inset:0;top:var(--header-height);z-index:99;background:var(--bg);padding:20px;transform:translateX(100%);transition:transform .3s ease;overflow-y:auto}
.mobile-nav.open{transform:translateX(0)}
.mobile-nav a{display:block;padding:14px 16px;font-size:1.05rem;font-weight:500;color:var(--text-secondary);border-radius:var(--radius);transition:background .2s,color .2s}
.mobile-nav a:hover,.mobile-nav a.active{color:var(--text);background:var(--card)}
.mobile-nav .mobile-cta{margin-top:16px;display:block;text-align:center;padding:14px;background:var(--accent);color:var(--bg);font-weight:600;border-radius:var(--radius)}

/* HERO */
.hero{padding:80px 0 60px;text-align:center}
.hero-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;background:var(--accent-glow);border:1px solid rgba(0,180,216,.25);border-radius:100px;font-size:.8rem;font-weight:600;color:var(--accent);margin-bottom:24px;letter-spacing:.02em;text-transform:uppercase}
.hero-badge .dot{width:6px;height:6px;background:var(--accent);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{font-size:clamp(2rem,5.5vw,3.75rem);font-weight:800;line-height:1.1;letter-spacing:-.03em;margin-bottom:20px}
.hero h1 .gradient{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:clamp(1rem,2vw,1.2rem);color:var(--text-secondary);max-width:640px;margin:0 auto 36px;line-height:1.7}
.hero-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.btn-outline{display:inline-flex;align-items:center;gap:6px;padding:10px 22px;border:1px solid var(--border);color:var(--text);font-weight:600;font-size:.9rem;border-radius:var(--radius);transition:border-color .2s,background .2s;cursor:pointer}
.btn-outline:hover{border-color:var(--accent);background:var(--accent-glow);color:var(--text)}

/* CATEGORY PILLS */
.category-nav{display:flex;gap:8px;padding:20px 0;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.category-nav::-webkit-scrollbar{display:none}
.category-pill{flex-shrink:0;padding:8px 18px;background:var(--card);border:1px solid var(--border);border-radius:100px;font-size:.85rem;font-weight:500;color:var(--text-secondary);transition:all .2s;cursor:pointer;white-space:nowrap}
.category-pill:hover,.category-pill.active{color:var(--accent);border-color:var(--accent);background:var(--accent-glow)}

/* SECTION HEADERS */
.section-header{display:flex;align-items:center;justify-content:space-between;padding:40px 0 24px;gap:16px}
.section-header h2{font-size:1.5rem;font-weight:700;letter-spacing:-.02em}
.section-header a{font-size:.875rem;font-weight:500;color:var(--accent);white-space:nowrap}

/* ARTICLE CARDS */
.articles-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:640px){.articles-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.articles-grid{grid-template-columns:repeat(3,1fr)}}
.article-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:transform .25s,border-color .25s,box-shadow .25s}
.article-card:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:0 8px 32px rgba(0,180,216,.08)}
.card-image{position:relative;aspect-ratio:16/9;background:var(--surface);overflow:hidden}
.card-image img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.article-card:hover .card-image img{transform:scale(1.04)}
.card-category{position:absolute;top:12px;left:12px;padding:4px 10px;background:rgba(10,10,15,.8);backdrop-filter:blur(4px);border-radius:100px;font-size:.7rem;font-weight:600;color:var(--accent);letter-spacing:.04em;text-transform:uppercase;white-space:nowrap;z-index:2;max-width:calc(100% - 24px);overflow:hidden;text-overflow:ellipsis}
.card-body{padding:20px}
.card-body .card-category{position:static;display:inline-block;margin-bottom:10px;background:var(--accent-glow);color:var(--accent);border:1px solid rgba(0,180,216,.25)}
.card-body h3{font-size:1.05rem;font-weight:700;line-height:1.35;margin-bottom:10px;letter-spacing:-.01em;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body h3 a{color:var(--text);transition:color .2s}
.card-body h3 a:hover{color:var(--accent)}
.card-excerpt{font-size:.875rem;color:var(--text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.card-meta{display:flex;align-items:center;gap:8px;font-size:.78rem;color:var(--text-muted)}
.card-meta .sep{width:3px;height:3px;background:var(--text-muted);border-radius:50%}

/* FEATURED (large card) */
.featured-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:900px){.featured-grid{grid-template-columns:1.3fr 1fr}}
.featured-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;min-height:400px;display:flex;align-items:flex-end;border:1px solid var(--border);transition:border-color .25s}
.featured-card:hover{border-color:var(--accent)}
.featured-card .card-image{position:absolute;inset:0;aspect-ratio:auto}
.featured-card .card-image::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(10,10,15,.95) 0%,rgba(10,10,15,.4) 60%,transparent)}
.featured-card .card-body{position:relative;z-index:1;padding:32px}
.featured-card .card-body h3{font-size:1.5rem;-webkit-line-clamp:3}
.featured-sidebar{display:flex;flex-direction:column;gap:20px}

/* NEWSLETTER BANNER */
.newsletter-banner{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px 32px;text-align:center;margin:60px 0}
.newsletter-banner h2{font-size:1.4rem;font-weight:700;margin-bottom:8px}
.newsletter-banner p{color:var(--text-secondary);font-size:.95rem;margin-bottom:24px}
.newsletter-form{display:flex;gap:10px;max-width:440px;margin:0 auto;flex-wrap:wrap;justify-content:center}
.newsletter-form input{flex:1;min-width:200px;padding:12px 16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);font-size:.9rem;color:var(--text);transition:border-color .2s}
.newsletter-form input:focus{border-color:var(--accent)}
.newsletter-form input::placeholder{color:var(--text-muted)}
.newsletter-form button{padding:12px 24px;background:var(--accent);color:var(--bg);font-weight:600;font-size:.9rem;border-radius:var(--radius);cursor:pointer;transition:background .2s}
.newsletter-form button:hover{background:var(--accent-hover)}

/* FOOTER */
.site-footer{border-top:1px solid var(--border);margin-top:80px;padding:48px 0 24px}
.footer-grid{display:grid;gap:40px;grid-template-columns:1fr;margin-bottom:40px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:900px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1fr}}
.footer-brand p{color:var(--text-secondary);font-size:.875rem;margin-top:12px;line-height:1.7;max-width:320px}
.footer-col h4{font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);margin-bottom:16px}
.footer-col a{display:block;padding:4px 0;font-size:.9rem;color:var(--text-secondary);transition:color .2s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding-top:24px;border-top:1px solid var(--border);font-size:.8rem;color:var(--text-muted)}
.social-links{display:flex;gap:12px}
.social-links a{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius);border:1px solid var(--border);color:var(--text-muted);transition:border-color .2s,color .2s}
.social-links a:hover{border-color:var(--accent);color:var(--accent)}

/* ARTICLE PAGE */
.article-header{padding:60px 0 32px;max-width:780px;margin:0 auto}
.article-header .breadcrumb{display:flex;align-items:center;gap:6px;font-size:.82rem;color:var(--text-muted);margin-bottom:20px;flex-wrap:wrap}
.article-header .breadcrumb a{color:var(--text-secondary)}
.article-header h1{font-size:clamp(1.75rem,4vw,2.75rem);font-weight:800;line-height:1.15;letter-spacing:-.03em;margin-bottom:16px}
.article-header .article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:.875rem;color:var(--text-secondary)}
.article-header .article-meta .tag{padding:4px 10px;background:var(--accent-glow);border-radius:100px;font-size:.75rem;font-weight:600;color:var(--accent)}
.article-header .article-meta .tag-editorial{padding:4px 10px;background:rgba(124,58,237,.15);border:1px solid rgba(124,58,237,.3);border-radius:100px;font-size:.75rem;font-weight:600;color:#a78bfa}
.editorial-notice{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;margin-bottom:28px;font-size:.9rem;color:var(--text-secondary);line-height:1.6}
.editorial-notice strong{color:var(--text)}
.article-hero-image{max-width:900px;margin:0 auto 40px;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border)}
.article-hero-image img{width:100%;aspect-ratio:2/1;object-fit:cover}
.article-content{max-width:720px;margin:0 auto;padding-bottom:60px}
.article-content p{font-size:1.05rem;line-height:1.8;color:var(--text-secondary);margin-bottom:20px}
.article-content h2{font-size:1.5rem;font-weight:700;margin:40px 0 16px;letter-spacing:-.02em;color:var(--text)}
.article-content h3{font-size:1.2rem;font-weight:600;margin:32px 0 12px;color:var(--text)}
.article-content ul,.article-content ol{margin:0 0 20px 24px;color:var(--text-secondary)}
.article-content ul{list-style:disc}
.article-content ol{list-style:decimal}
.article-content li{margin-bottom:8px;font-size:1.05rem;line-height:1.7}
.article-content blockquote{border-left:3px solid var(--accent);padding:16px 24px;margin:24px 0;background:var(--card);border-radius:0 var(--radius) var(--radius) 0}
.article-content blockquote p{color:var(--text);font-style:italic;margin-bottom:0}
.article-content code{font-family:var(--font-mono);background:var(--card);padding:2px 6px;border-radius:4px;font-size:.9em}
.article-content a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
.article-content img{border-radius:var(--radius);margin:24px 0}
.article-tags{display:flex;flex-wrap:wrap;gap:8px;padding:32px 0;border-top:1px solid var(--border);margin-top:40px}
.article-tags a{padding:6px 14px;background:var(--card);border:1px solid var(--border);border-radius:100px;font-size:.8rem;color:var(--text-secondary);transition:all .2s}
.article-tags a:hover{border-color:var(--accent);color:var(--accent)}

/* CATEGORY PAGE */
.category-hero{padding:60px 0 20px;text-align:center}
.category-hero h1{font-size:clamp(1.75rem,4vw,2.75rem);font-weight:800;margin-bottom:12px;letter-spacing:-.02em}
.category-hero p{color:var(--text-secondary);font-size:1.05rem;max-width:600px;margin:0 auto}

/* CATEGORY GUIDE */
.category-guide{padding:40px 0 60px}
.guide-content{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:48px;max-width:900px;margin:0 auto}
@media(max-width:768px){.guide-content{padding:32px 24px}}
.guide-content h2{font-size:1.75rem;font-weight:800;margin-bottom:20px;letter-spacing:-.02em;color:var(--text)}
.guide-content h3{font-size:1.3rem;font-weight:700;margin:36px 0 16px;letter-spacing:-.01em;color:var(--text)}
.guide-content p{font-size:1.05rem;line-height:1.8;color:var(--text-secondary);margin-bottom:24px}
.guide-list{list-style:none;margin:0 0 32px 0;padding:0}
.guide-list li{position:relative;padding:12px 0 12px 24px;font-size:1rem;line-height:1.75;color:var(--text-secondary);border-bottom:1px solid var(--border)}
.guide-list li:last-child{border-bottom:none}
.guide-list li::before{content:'';position:absolute;left:0;top:22px;width:8px;height:8px;background:var(--accent);border-radius:50%}
.guide-list li strong{color:var(--text);font-weight:600}

/* ABOUT / CONTACT PAGE */
.page-section{padding:60px 0}
.page-section h1{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:800;margin-bottom:16px;letter-spacing:-.02em}
.page-content{max-width:720px}
.page-content p{font-size:1.05rem;line-height:1.8;color:var(--text-secondary);margin-bottom:20px}
.page-content h2{font-size:1.35rem;font-weight:700;margin:36px 0 12px;color:var(--text)}
.page-content ul{list-style:disc;margin:0 0 20px 24px;color:var(--text-secondary)}
.page-content li{margin-bottom:8px;font-size:1.05rem;line-height:1.7}

/* CONTACT FORM */
.contact-grid{display:grid;gap:40px;grid-template-columns:1fr}
@media(min-width:768px){.contact-grid{grid-template-columns:1fr 1fr}}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:.85rem;font-weight:600;margin-bottom:6px;color:var(--text-secondary)}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-size:.95rem;transition:border-color .2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--accent)}
.form-group textarea{min-height:140px;resize:vertical}
.contact-info-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px}
.contact-info-card h3{font-size:1.1rem;font-weight:700;margin-bottom:16px}
.contact-info-card p{font-size:.95rem;color:var(--text-secondary);line-height:1.7;margin-bottom:20px}
.info-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:16px;font-size:.9rem;color:var(--text-secondary)}
.info-item svg{flex-shrink:0;color:var(--accent);margin-top:2px}

/* PLACEHOLDER IMAGES */
.placeholder-img{background:var(--surface);display:flex;align-items:center;justify-content:center;width:100%;height:100%;font-size:.8rem;color:var(--text-muted);letter-spacing:.04em;text-transform:uppercase}
.placeholder-img.ai{background:linear-gradient(135deg,#0d1b3e,#1a0d3e)}
.placeholder-img.hardware{background:linear-gradient(135deg,#1a2a0d,#0d2a2a)}
.placeholder-img.datacenter{background:linear-gradient(135deg,#2a1a0d,#1a0d2a)}
.placeholder-img.robotics{background:linear-gradient(135deg,#0d2a1a,#0d1a2a)}

/* SCROLL ANIMATIONS */
.fade-in{opacity:0;transform:translateY(20px);transition:opacity .5s,transform .5s}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* UTILITY */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.text-gradient{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.mt-0{margin-top:0!important}

/* CATEGORY CARDS */
.category-card{display:block;text-decoration:none;color:inherit}
.category-card .card-body h3{color:var(--text)}
.category-card:hover .card-body h3{color:var(--accent)}

/* SOCIAL SHARING */
.share-buttons{display:flex;gap:12px;align-items:center;padding:24px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);margin:40px 0}
.share-buttons span{font-weight:600;color:var(--text-secondary);font-size:.875rem}
.share-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:var(--card);border:1px solid var(--border);color:var(--text-secondary);transition:all .2s;cursor:pointer}
.share-btn:hover{background:var(--accent);color:var(--bg);border-color:var(--accent);transform:translateY(-2px)}
.share-btn svg{width:18px;height:18px}

/* ARTICLE SERIES */
.series-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;background:var(--accent-glow);border:1px solid rgba(0,180,216,.3);border-radius:100px;font-size:.75rem;font-weight:600;color:var(--accent);margin-bottom:16px;letter-spacing:.03em;text-transform:uppercase}
.series-badge svg{width:14px;height:14px}
.series-nav{background:var(--card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;margin:40px 0}
.series-nav h3{font-size:1rem;font-weight:700;margin-bottom:12px;color:var(--text)}
.series-nav ul{list-style:none;padding:0;margin:0}
.series-nav li{padding:8px 0;border-bottom:1px solid var(--border)}
.series-nav li:last-child{border-bottom:none}
.series-nav a{color:var(--text-secondary);text-decoration:none;transition:color .2s;font-size:.9rem}
.series-nav a:hover{color:var(--accent)}
.series-nav .current{color:var(--accent);font-weight:600}