/* ============================================================    Headux Industrial - Main Stylesheet    UNIMIG-inspired: pure black & white, product-driven layout    ============================================================ */  /* ===== RESET & BASE ===== */ *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }  html { scroll-behavior: smooth; }  body {     font-family: "Segoe UI", system-ui, -apple-system, sans-serif;     font-size: 16px; line-height: 1.6; color: #333; background: #fff;     -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;     overflow-x: hidden; width: 100%; max-width: 100vw; position: relative;     overscroll-behavior-x: none; } html { overflow-x: hidden; width: 100%; overscroll-behavior-x: none; } a { color: inherit; text-decoration: none; } ul { list-style: none; } img { max-width: 100%; height: auto; display: block; } button { cursor: pointer; font-family: inherit; }  h1, h2, h3, h4 { line-height: 1.15; color: #0D1117; } h1 { font-size: 40px; font-weight: 700; } h2 { font-size: 32px; font-weight: 700; } h3 { font-size: 24px; font-weight: 600; } h4 { font-size: 18px; font-weight: 600; }  @media (max-width: 768px) {     h1 { font-size: 30px; } h2 { font-size: 24px; } h3 { font-size: 20px; } }  /* ===== BUTTONS ===== */ .btn {     display: inline-flex; align-items: center; justify-content: center;     padding: 0 28px; height: 50px; font-size: 15px; font-weight: 600;     border: none; border-radius: 12px; transition: opacity .2s, transform .2s; text-decoration: none; } .btn:hover { opacity: .85; transform: translateY(-1px); } .btn-black { background: #0D1117; color: #fff; } .btn-white { background: #fff; color: #0D1117; } .btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,.5); } .btn-outline:hover { border-color: #fff; opacity: 1; }  /* ===== HEADER ===== */ .site-header {     position: sticky; top: 0; z-index: 100; background: #fff;     border-bottom: 1px solid #F2F2F7; transition: box-shadow .2s; } .header-scrolled { box-shadow: 0 2px 20px rgba(0,0,0,.06); }  .header-inner {     max-width: 1680px; margin: 0 auto; padding: 0 32px;     display: flex; align-items: center; justify-content: space-between; height: 64px; } .header-left { flex-shrink: 0; } .site-logo { display: flex; align-items: center; } .logo-text { font-size: 22px; font-weight: 700; letter-spacing: 2px; color: #0D1117; }  .header-nav { display: flex; align-items: center; } .nav-list { display: flex; align-items: center; gap: 28px; } .nav-list > li > a {     font-size: 16px; font-weight: 600; color: #0D1117;     transition: opacity .2s; white-space: nowrap;     display: inline-flex; align-items: center; height: 64px; } .nav-list > li > a:hover, .nav-list .current-menu-item > a { opacity: .5; }  .menu-item-has-children { position: relative; } .menu-item-has-children > a::after {     content: ''; display: inline-block; width: 12px; height: 12px; vertical-align: -2px; margin-left: 4px;     background: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%230D1117' stroke-width='2.5'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") center/contain no-repeat; } .sub-menu {     display: none; position: absolute; top: 100%; left: 0; background: #fff;     box-shadow: 0 10px 30px rgba(0,0,0,.1); border-radius: 8px; padding: 10px 0; min-width: 200px; z-index: 101; } .sub-menu::before {     content: ''; position: absolute; top: -12px; left: 0; right: 0; height: 12px; } .menu-item-has-children:hover .sub-menu, .menu-item-has-children.open .sub-menu { display: block; } .sub-menu li a { display: block; padding: 10px 28px; font-size: 14px; transition: background .15s; } .sub-menu li a:hover { background: #F5F5F5; }  .header-right { display: flex; align-items: center; gap: 16px; flex-shrink: 0; } .lang-switch { font-size: 14px; color: #888; font-weight: 500; white-space: nowrap; } .lang-current { color: #0D1117; font-weight: 700; } .lang-sep { margin: 0 5px; color: #ddd; } .lang-link { transition: opacity .2s; } .lang-link:hover { opacity: .6; }  .mobile-menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 4px; min-width: 44px; min-height: 44px; align-items: center; justify-content: center; } .hamburger-line { display: block; width: 22px; height: 2px; background: #0D1117; border-radius: 1px; }    /* ===== SECTIONS ===== */ .section { padding: 72px 0; } .section-inner { max-width: 1680px; margin: 0 auto; padding: 0 32px; } .section-heading { text-align: center; margin-bottom: 40px; } .section-heading h2 { font-size: 30px; margin-bottom: 10px; } .section-heading .subtitle { font-size: 16px; color: #818898; max-width: 560px; margin: 0 auto; }  .hero-carousel { position: relative; width: 100%; } .hero-slides { position: relative; height: 0; padding-bottom: 100%; border-radius: 16px; overflow: hidden; } .hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity .6s ease; } .hero-slide.active { opacity: 1; } .hero-slide img { width: 100%; height: 100%; object-fit: cover; } .hero-dots { position: absolute; bottom: 16px; left: 0; right: 0; display: flex; justify-content: center; gap: 8px; z-index: 2; } .hero-dots .dot { width: 44px; height: 44px; border-radius: 50%; background: none; border: none; cursor: pointer; padding: 0; display: flex; align-items: center; justify-content: center; transition: none; } .hero-dots .dot::after { content: ''; display: block; width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,.3); transition: background .2s; } .hero-dots .dot.active::after { background: #fff; }  /* ===== HERO (static) ===== */ .hero { background: #000; min-height: 600px; display: flex; align-items: center; } .hero .section-inner {     display: flex; align-items: center; justify-content: space-between;     gap: 0px; padding: 48px 20px; } .hero-left { flex: 1; max-width: 680px; } .hero-tag {     font-size: 13px; text-transform: uppercase; letter-spacing: 2px;     color: rgba(255,255,255,.45); margin-bottom: 14px; } .hero-left h1 { font-size: 26px; color: #fff; margin: 38px 0; line-height: 1.3; } .hero-desc {     font-size: 17px; color: rgba(255,255,255,.6); margin-bottom: 28px;     line-height: 1.6; max-width: 480px; } .hero-cta { display: flex; gap: 14px; flex-wrap: wrap; } .hero-right { flex-shrink: 0; max-width: 600px; width: 100%; } .hero-placeholder {     width: 100%; aspect-ratio: 4/3; background: rgba(255,255,255,.04);     border-radius: 16px; display: flex; align-items: center; justify-content: center;     color: rgba(255,255,255,.12); font-size: 13px; }  @media (max-width: 860px) {     .hero .section-inner { gap: 10px; justify-content: space-between; }     .hero-right { flex-shrink: 1; max-width: 350px; min-width: 280px; }     .hero-left { flex: 1; min-width: 240px; }     .hero-left h1 { font-size: 24px; margin: 24px 0; }     .hero-desc { max-width: 100%; }     .hero-cta { justify-content: flex-start; } }  /* ===== TRUST BAR ===== */ .trust-bar { padding: 28px 0; border-bottom: 1px solid #F0F0F0; } .trust-bar .section-inner {     display: flex; justify-content: center; align-items: center;     gap: 10px 40px; flex-wrap: wrap; } .trust-label {     font-size: 13px; color: #999; text-transform: uppercase;     letter-spacing: 1.5px; white-space: nowrap; font-weight: 600; } .trust-badges { display: flex; align-items: center; gap: 32px; flex-wrap: wrap; justify-content: center; } .trust-badge { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: #333; } .trust-badge svg { opacity: .55; }  /* ===== CTA STRIP ===== */ .cta-strip { background: #F5F5F5; padding: 44px 0; text-align: center; } .cta-strip .section-inner {     display: flex; align-items: center; justify-content: center;     gap: 32px; flex-wrap: wrap; } .cta-strip p { font-size: 20px; font-weight: 600; color: #0D1117; } @media (max-width: 600px) { .cta-strip p { font-size: 17px; } }  /* ===== CATEGORY BANNER CARD ===== */ .cat-banner {     display: block; position: relative; z-index: 0; border-radius: 16px; overflow: hidden;     transition: transform .3s, box-shadow .3s;     touch-action: manipulation; -webkit-tap-highlight-color: transparent; } .cat-banner:hover { transform: translateY(-3px); box-shadow: 0 10px 40px rgba(0,0,0,.08); } .cat-banner-bg {     width: 100%; aspect-ratio: 21/7; background: #F0F0F0;     display: flex; align-items: center; justify-content: center;     color: #ccc; font-size: 16px; transition: filter .3s; } .cat-banner:hover .cat-banner-bg { filter: brightness(.95); } .cat-banner-overlay {     position: absolute; inset: 0; display: flex; flex-direction: column;     align-items: center; justify-content: flex-start;     padding: 64px 48px;     background: linear-gradient(180deg,rgba(13,17,23,.8) 0%,transparent 60%); } .cat-banner-text { text-align: center; } .cat-banner-text h3 { font-size: 44px; color: #fff; margin-bottom: 6px; } .cat-banner-text p { font-size: 17px; color: rgba(255,255,255,.6); } .cat-banner-arrow { display: none; } .cat-banner:hover .cat-banner-arrow { display: none; }     /* ===== VIDEO CAROUSEL ===== */ .video-carousel { position: relative; } .video-track {     display: flex; gap: 20px; overflow-x: auto;     scroll-snap-type: x mandatory; scrollbar-width: none; padding: 4px 0; } .video-track::-webkit-scrollbar { display: none; }  .video-card {     flex: 0 0 calc(33.333% - 14px); min-width: 280px; scroll-snap-align: start;     background: #fff; border-radius: 12px; overflow: hidden;     border: 1px solid #F0F0F0; transition: transform .3s; position: relative; } .video-card:hover { transform: translateY(-3px); } .video-thumb {     aspect-ratio: 16/10; background: #F5F5F5;     display: flex; align-items: center; justify-content: center;     color: #ccc; font-size: 13px; position: relative; overflow: hidden; } .video-thumb picture, .video-thumb-img {     position: absolute; inset: 0;     width: 100%; height: 100%; object-fit: cover; } .video-play {     position: absolute; width: 52px; height: 52px; border-radius: 50%;     background: rgba(0,0,0,.6); display: flex; align-items: center; justify-content: center;     transition: background .2s; } .video-play::after {     content: ''; display: block; width: 0; height: 0;     border-left: 16px solid #fff; border-top: 10px solid transparent;     border-bottom: 10px solid transparent; margin-left: 3px; } .video-card:hover .video-play { background: rgba(0,0,0,.8); } .video-info { padding: 16px 18px; } .video-info h4 { font-size: 15px; font-weight: 600; color: #0D1117; margin-bottom: 4px; } .video-info span { font-size: 13px; color: #999; }  .video-nav { display: flex; justify-content: center; gap: 12px; margin-top: 28px; } .video-prev, .video-next {     width: 44px; height: 44px; border-radius: 50%; border: 1px solid #E0E0E0;     background: #fff; display: flex; align-items: center; justify-content: center;     font-size: 18px; transition: all .2s; } .video-prev:hover, .video-next:hover { background: #0D1117; color: #fff; border-color: #0D1117; }  @media (max-width: 860px) { .video-card { flex: 0 0 calc(33.333% - 14px); } } @media (max-width: 700px) { .video-card { flex: 0 0 calc(50% - 10px); } } @media (max-width: 480px) { .video-card { flex: 0 0 85%; } }  /* ===== FEATURED PRODUCT HERO ===== */ .feat-hero {     position: relative; min-height: 550px; display: flex; align-items: center;     border-radius: 16px; overflow: hidden; transition: transform .3s;     background: #000; } .feat-hero:hover { transform: translateY(-3px); } .feat-hero-bg {     position: absolute; inset: 0; background: #000;     display: flex; align-items: center; justify-content: flex-end;     color: rgba(255,255,255,.06); font-size: 20px; padding-right: 48px; }  .feat-hero-tag {     font-size: 13px; text-transform: uppercase; letter-spacing: 2px;     color: rgba(255,255,255,.5); margin-bottom: 12px; } .feat-hero-overlay h2 { font-size: 40px; color: #fff; margin-bottom: 14px; line-height: 1.15; } .feat-hero-overlay p {     font-size: 17px; color: rgba(255,255,255,.6);     margin-bottom: 28px; line-height: 1.6; }   /* ===== BREADCRUMB ===== */ .breadcrumb { padding: 16px 0; background: #fff; border-bottom: 1px solid #F2F2F7; } .breadcrumb .section-inner { display: flex; align-items: center; gap: 8px; font-size: 13px; color: #999; } .breadcrumb a { transition: opacity .2s; color: #666; } .breadcrumb a:hover { opacity: .6; } .breadcrumb-sep { color: #ccc; } .breadcrumb-current { color: #0D1117; font-weight: 600; }  /* ===== SIDEBAR LAYOUT ===== */ .sidebar-layout { display: grid; grid-template-columns: 240px 1fr; gap: 48px; align-items: start; } @media (max-width: 900px) { .sidebar-layout { grid-template-columns: 1fr; } } .sidebar { position: sticky; top: 80px; } .sidebar-toggle {     display: none; width: 100%; padding: 12px 16px; font-size: 14px; font-weight: 600;     background: #fff; border: 1px solid #E0E0E0; border-radius: 8px; text-align: left;     justify-content: space-between; align-items: center; margin-bottom: 12px; } .sidebar-toggle::after { content: '+'; font-size: 18px; font-weight: 400; } .sidebar.open .sidebar-toggle::after { content: '\2212'; } @media (max-width: 900px) {     .sidebar-toggle { display: flex; }     .sidebar-inner { display: none; }     .sidebar.open .sidebar-inner { display: block; }     .sidebar { position: static; margin-bottom: 24px; } } .sidebar-title {     font-size: 13px; font-weight: 700; text-transform: uppercase;     letter-spacing: 1.5px; color: #0D1117; margin-bottom: 14px; } .sidebar-nav { display: flex; flex-direction: column; gap: 2px; margin-bottom: 4px; } .sidebar-nav a {     display: block; padding: 9px 12px; font-size: 14px; color: #666;     border-radius: 6px; transition: background .15s, color .15s; } .sidebar-nav a:hover { background: #F5F5F5; color: #0D1117; } .sidebar-nav a.active { background: #F0F0F0; color: #0D1117; font-weight: 600; } .sidebar-nav-static {     display: block; padding: 9px 12px; font-size: 14px; color: #666;     border-radius: 6px; } .sidebar-main { min-width: 0; }  /* ===== ABOUT ===== */ .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; } @media (max-width: 768px) { .about-grid { grid-template-columns: 1fr; gap: 32px; } } .about-img { aspect-ratio: 4/3; background: #F0F0F0; border-radius: 12px; display: flex; align-items: center; justify-content: center; color: #ccc; font-size: 14px; } .about-text h2 { margin-bottom: 20px; text-align: left; } .about-text p { color: #666; font-size: 16px; line-height: 1.7; margin-bottom: 16px; } .about-text p:last-child { margin-bottom: 0; }  /* ===== FOOTER ===== */ .site-footer { background: #0D1117; color: rgba(255,255,255,.65); padding: 64px 0 32px; } .footer-inner { max-width: 1680px; margin: 0 auto; padding: 0 32px; } .footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 48px; margin-bottom: 48px; } .footer-heading {     font-size: 13px; font-weight: 700; color: #fff; margin-bottom: 16px;     text-transform: uppercase; letter-spacing: 1.5px; } .footer-links { display: flex; flex-direction: column; gap: 9px; } .footer-links a { font-size: 14px; transition: opacity .2s; color: rgba(255,255,255,.65); } .footer-links a:hover { opacity: .6; } .footer-sub-text { font-size: 14px; margin-bottom: 12px; } .footer-sub-form { display: flex; gap: 8px; margin-bottom: 24px; } .footer-sub-form input {     flex: 1; padding: 11px 14px; border: 1px solid rgba(255,255,255,.15);     border-radius: 8px; background: rgba(255,255,255,.04);     color: #fff; font-size: 14px; font-family: inherit; } .footer-sub-form input:focus { outline: none; border-color: rgba(255,255,255,.3); } .footer-sub-form input::placeholder { color: rgba(255,255,255,.35); } .footer-sub-form button {     width: 42px; height: 42px; border: none; border-radius: 8px;     background: #fff; color: #0D1117; font-size: 18px; font-weight: 700; } .footer-social { display: flex; gap: 14px; } .social-icon {     width: 38px; height: 38px; border-radius: 50%;     border: 1px solid rgba(255,255,255,.15);     display: flex; align-items: center; justify-content: center;     color: rgba(255,255,255,.5); transition: all .2s; } .social-icon:hover { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.3); color: #fff; } .footer-bottom {     display: flex; justify-content: space-between; align-items: center;     padding-top: 24px; border-top: 1px solid rgba(255,255,255,.08); } .footer-copy { font-size: 13px; } .footer-lang-link { font-size: 13px; transition: opacity .2s; color: rgba(255,255,255,.65); } .footer-lang-link:hover { opacity: .6; } .footer-lang-sep { color: rgba(255,255,255,.15); margin: 0 8px; } .footer-lang a { font-size: 13px; transition: opacity .2s; color: rgba(255,255,255,.65); } .footer-lang a:hover { opacity: .6; } .footer-lang span { color: rgba(255,255,255,.15); margin: 0 8px; }  @media (max-width: 900px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }   /* ===== PRODUCT PAGE ===== */ .page-hero { background: #000; min-height: 500px; display: flex; align-items: center; text-align: center; position: relative; } .page-hero::before {     content: ''; position: absolute; inset: 0; background: rgba(0,0,0,.35); z-index: 0; } .page-hero .section-inner { padding: 15px 32px; position: relative; z-index: 1; } .page-hero-tag {     font-size: 13px; text-transform: uppercase; letter-spacing: 2px;     color: rgba(255,255,255,.45); margin-bottom: 12px; } .page-hero h1 { font-size: 36px; color: #fff; margin-bottom: 10px; } .page-hero p { font-size: 16px; color: rgba(255,255,255,.5); max-width: 600px; margin: 0 auto; }  /* ===== PRODUCT GRID ===== */ .prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; } @media (max-width: 900px) { .prod-grid { grid-template-columns: repeat(2, 1fr); } }  .prod-card {     display: block; background: #fff; border-radius: 12px; overflow: hidden;     border: 1px solid #F0F0F0; transition: transform .3s, box-shadow .3s; } .prod-card:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,0,0,.06); } .prod-card-img {     background: #F5F5F5;     display: flex; align-items: center; justify-content: center;     color: #ccc; font-size: 13px; overflow: hidden; } .prod-card-img img {     width: 100%; height: 100%;     object-fit: cover; } .prod-card-body { padding: 24px; } .prod-card-tag {     font-size: 12px; text-transform: uppercase; letter-spacing: 1.5px;     color: #999; margin-bottom: 6px; } .prod-card-body h3 { font-size: 20px; margin-bottom: 8px; } .prod-card-body p { font-size: 14px; color: #666; margin-bottom: 14px; line-height: 1.5; } .prod-card-link {     font-size: 14px; font-weight: 600; display: inline-flex; align-items: center;     gap: 6px; transition: gap .2s; color: #0D1117; } .prod-card-link:hover { gap: 10px; } .prod-card-link::after { content: '\2192'; font-size: 15px; }  /* ===== MEGA MENU ===== */ .mega-parent { position: static !important; } .mega-menu {     display: none; position: absolute; top: calc(100% - 8px); left: 0; right: 0;     background: transparent; z-index: 200; max-width: 1680px; margin: 0 auto; } .mega-parent:hover .mega-menu, .mega-menu:hover, .mega-menu.open { display: block; }  .mega-menu-inner {     padding-top: 8px; display: flex;     background: #fff; box-shadow: 0 12px 40px rgba(0,0,0,.1);     border-radius: 0 0 16px 16px; border-top: 1px solid #F0F0F0; }  .mega-left {     flex: 0 0 240px; padding: 20px 0; border-right: 1px solid #F2F2F7;     background: #FAFAFA; border-radius: 0 0 0 16px; } .mega-left a {     display: flex; align-items: center; justify-content: space-between;     padding: 11px 24px; font-size: 14px; color: #333; transition: background .12s, color .12s; } .mega-left a:hover, .mega-left a.active { background: #fff; color: #0D1117; font-weight: 600; } .mega-left a::after { content: none; } .mega-left a[data-panel]:hover::after, .mega-left a[data-panel].active::after { content: '\25B6'; font-size: 10px; color: #0D1117; line-height:1; } .mega-left a:last-child::after { content: none; }  .mega-right {     flex: 1; padding: 24px 32px; min-height: 200px; border-radius: 0 0 16px 0; } .mega-panel { display: none; } .mega-panel.active { display: block; } .mega-panel-title {     font-size: 13px; font-weight: 700; text-transform: uppercase;     letter-spacing: 1.5px; color: #0D1117; margin-bottom: 16px; padding-bottom: 12px;     border-bottom: 1px solid #F0F0F0; } .mega-panel-title a { font-size: inherit; font-weight: inherit; color: inherit; } .mega-panel-title a:hover { opacity: .6; } .mega-panel-title span { font-size: inherit; font-weight: inherit; color: inherit; }  .mega-grid { display: flex; flex-direction: column; gap: 1px; } .mega-grid a {     display: block; padding: 1px 0; font-size: 14px; color: #666;     transition: color .12s, background .12s; border-radius: 4px; } .mega-grid a:hover { color: #0D1117; background: #F5F5F5; } .mega-link-static {     display: block; padding: 4px 0; font-size: 14px; color: #666; } .mega-grid.mega-grid-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 1px 24px; } .mega-grid.mega-grid-4col { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px 12px; }  @media (max-width: 768px) {     .mega-grid.mega-grid-4col { grid-template-columns: repeat(2, 1fr); }     .mega-grid.mega-grid-2col { grid-template-columns: 1fr; } } .mega-grid-group { margin-bottom: 10px; } .mega-sub-heading {     display: block; font-size: 11px; font-weight: 700; text-transform: uppercase;     letter-spacing: 1px; color: #999; margin-bottom: 4px; padding-bottom: 2px;     border-bottom: 1px solid #F5F5F5; }  /* ===== MEGA MENU MOBILE (max-width: 1024px) ===== */ @media (max-width: 1024px) {     .header-nav {         position: fixed; top: 64px; left: 0; right: 0; background: #fff;         flex-direction: column; padding: 0;         box-shadow: 0 2px 20px rgba(0,0,0,.1);         transform: translateY(-120%); transition: transform .3s; z-index: 99;         overflow-y: auto; max-height: calc(100vh - 64px);         visibility: hidden; pointer-events: none;     }     .header-nav.nav-open { transform: translateY(0); visibility: visible; pointer-events: auto; }     .nav-list { flex-direction: column; gap: 0; width: 100%; align-items: stretch; }      .nav-list > li > a {         display: flex; align-items: center; justify-content: space-between; text-align: left;         padding: 14px 12px; font-size: 19px; line-height: 1.2; border-bottom: 1px solid #F0F0F0;     }     .nav-list > li.menu-item-has-children > a { justify-content: space-between; }     .nav-list > li.menu-item-has-children > a::after,     .nav-list > li.mega-parent > a::after {         content: '\25BC'; font-size: 10px; color: #999; margin-left: 8px;     }     .nav-list > li.menu-item-has-children.open > a::after,     .nav-list > li.mega-parent.open > a::after {         content: '\25B2'; color: #0D1117;     }      .mega-parent:hover .mega-menu,     .mega-menu:hover,     .menu-item-has-children:hover > .sub-menu { display: none !important; }     .menu-item-has-children.open > .sub-menu { display: block !important; }      .sub-menu { position: static; box-shadow: none; padding: 0 0 0 12px; }     .sub-menu .sub-menu { padding: 0 0 0 12px; }     .sub-menu li a { padding: 10px 0; font-size: 14px; border-bottom: 1px solid #F5F5F5; }      .mega-parent { position: relative !important; }     .mega-parent .mega-menu { display: none !important; }     .mega-parent.open .mega-menu { display: block !important; }     .mega-menu { position: static; background: transparent; max-width: none; padding: 0; z-index: auto; }     .mega-menu-inner { padding: 0; flex-direction: column; box-shadow: none; border-radius: 0; border-top: none; display: block; }      .mega-left { flex: none; border-right: none; border-bottom: none; background: transparent; padding: 0; margin: 0; }     .mega-left a { display: flex; align-items: center; text-align: left; padding: 10px 12px; font-size: 15px; line-height: 1.2; font-weight: 500; color: #333; }     .mega-left a:hover, .mega-left a.active { background: #F5F5F5; color: #0D1117; font-weight: 600; }     .mega-left a::after { content: none; }     .mega-left a:hover::after, .mega-left a.active::after { content: none; }     .mega-left a[data-panel] { justify-content: space-between; }     .mega-left a[data-panel]::after { content: '\25BC'; font-size: 9px; color: #ccc; flex-shrink: 0; margin-left: 8px; }     .mega-left a[data-panel].expanded::after { content: '\25B2'; color: #0D1117; }     .mega-left a:last-child::after { content: none; }      .mega-right { flex: none; padding: 0; min-height: auto; }     .mega-panel { display: none; }     .mega-panel.active { display: block; }     .mega-panel.expanded { display: block; }     .mega-panel.inline-panel { padding: 8px 0 8px 0; border-top: 1px solid #F5F5F5; }     .mega-panel.inline-panel .mega-grid a { background: #F5F5F5; border-radius: 6px; }     .inline-panel .mega-panel-title { display: none; }     .mega-panel-title { font-size: 13px; margin-bottom: 8px; padding-bottom: 4px; }      .mega-sub-heading { display: flex; justify-content: space-between; cursor: pointer; padding: 8px 12px; border-radius: 6px; background: #0D1117; color: #fff; font-size: 13px; font-weight: 600; margin-bottom: 4px; }     .mega-sub-heading::after { content: '\25BC'; flex-shrink: 0; margin-left: 8px; color: #aaa; }     .mega-grid-group.expanded .mega-sub-heading::after { content: '\25B2'; color: #fff; }     .mega-grid-group { margin-bottom: 12px; }     .mega-grid-group .mega-grid { display: none; }     .mega-grid-group.expanded .mega-grid { display: grid; }      .mega-right .mega-grid a {         display: block; padding: 8px 10px; font-size: 13px; color: #333;         background: #F5F5F5; border-radius: 6px; text-align: center;     }     .mega-right .mega-grid a:hover { background: #EBEBEB; color: #0D1117; }     .mega-grid.mega-grid-4col { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 8px; }     .mega-grid.mega-grid-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 8px; }      .mobile-menu-toggle { display: flex; } }  /* ===== SIDEBAR GROUP COLLAPSE ===== */ .sidebar-group { margin-bottom: 16px; } .sidebar-group-title {     display: flex; align-items: center; justify-content: space-between;     font-size: 13px; font-weight: 700; text-transform: uppercase;     letter-spacing: 1.5px; color: #0D1117; cursor: pointer;     padding: 4px 0; user-select: none; margin-bottom: 4px; } .sidebar-group-toggle {     width: 20px; height: 20px; display: flex; align-items: center; justify-content: center;     font-size: 11px; font-weight: 400; color: #999; transition: transform .2s;     flex-shrink: 0; line-height: 1; } .sidebar-group-toggle::after { content: '\25B2'; } .sidebar-group-toggle.collapsed::after { content: '\25BC'; } @media (max-width: 900px) {     .sidebar-nav-list { max-height: 2000px; }     .sidebar-nav-list.collapsed { max-height: 0; } } .sidebar-nav-list {     overflow: hidden; max-height: 2000px;     transition: max-height .35s ease; } .sidebar-nav-list.collapsed { max-height: 0; }  .sidebar-nav { display: flex; flex-direction: column; gap: 2px; margin-bottom: 4px; } .sidebar-nav a {     display: block; padding: 9px 12px; font-size: 14px; color: #666;     border-radius: 6px; transition: background .15s, color .15s; } .sidebar-nav a:hover { background: #F5F5F5; color: #0D1117; } .sidebar-nav a.active { background: #F0F0F0; color: #0D1117; font-weight: 600; } .sidebar-main { min-width: 0; }  /* View toggle buttons (mobile) */ .view-toggle {     display: none; gap: 6px; margin-bottom: 16px; } @media (max-width: 900px) { .view-toggle { display: flex; } } .view-btn {     padding: 8px 12px; border: 1px solid #E0E0E0; background: #fff;     border-radius: 6px; cursor: pointer; font-size: 16px; line-height: 1;     transition: all .15s; min-height: 44px; min-width: 44px; } .view-btn.active { background: #0D1117; color: #fff; border-color: #0D1117; }  /* Compact 2-col product cards */ .prod-grid-compact {     display: none; grid-template-columns: repeat(2, 1fr); gap: 12px; } @media (max-width: 600px) {     .prod-grid-compact { grid-template-columns: 1fr; } } @media (max-width: 900px) {     .prod-grid { grid-template-columns: 1fr; }     .prod-grid-compact.active {         display: grid;         grid-template-columns: repeat(2, minmax(0, 1fr));     }     .prod-grid.compact-hidden { display: none; } } .prod-card-compact {     display: block; background: #fff; border-radius: 10px; overflow: hidden;     border: 1px solid #F0F0F0; transition: transform .2s; } .prod-card-compact:hover { transform: translateY(-2px); } .prod-card-static { cursor: default; } .prod-card-static:hover { transform: none; box-shadow: none; } .prod-card-compact-img {     height: 200px; background: #F5F5F5;     display: flex; align-items: center; justify-content: center;     color: #ccc; font-size: 12px; overflow: hidden; } .prod-card-compact-img img {     max-width: 100%; max-height: 100%;     object-fit: contain; } .prod-card-compact-name {     padding: 8px 10px; font-size: 13px; font-weight: 600; color: #0D1117;     text-align: center; background: #F5F5F5; }  /* ===== PRODUCT DETAIL LAYOUT ===== */ .product-detail-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; } @media (max-width: 768px) {     .product-detail-layout { grid-template-columns: 1fr; gap: 32px; }     .product-detail-layout > div:last-child { text-align: center; }     .product-detail-layout > div:last-child > div[style*="flex-wrap"] { justify-content: center; }     .product-detail-layout h2 { font-size: 24px; margin-top: 0; } }  /* ===== IMAGE REPLACEMENTS ===== */ .hero-img {     width: 100%; aspect-ratio: 1/1; object-fit: cover;     border-radius: 16px; } @media (max-width: 860px) {     .hero-slides { height: 0; padding-bottom: 100%; }     .hero-left h1 { font-size: 24px; }     .hero-desc { max-width: 100%; }     .hero-cta { justify-content: flex-start; } } @media (max-width: 530px) {     .hero .section-inner { flex-direction: column; gap: 2px; align-items: stretch; }     .hero-right { max-width: 100vw; width: 100vw; }     .hero-left { min-width: 0; }     .hero-left h1 { font-size: 22px; margin: 20px 0; text-align: center; }     .hero-cta { justify-content: center; }     .hero-slides { width: 100vw; max-width: 100vw; height: 0; padding-bottom: 100%; } }  .cat-banner-img {     width: 100%; height: auto; min-height: 360px; object-fit: cover;     display: block; transition: filter .3s; } .cat-banner:hover .cat-banner-img { filter: brightness(.95); }  .feat-hero-img {     position: absolute; left: 0; top: 50%; transform: translateY(-50%);     width: auto; height: 100%; max-width: none;     object-fit: cover; object-position: left center; } .feat-hero-overlay {      position: relative; z-index: 2; padding: 64px; max-width: 600px;      margin-left: auto;     background: linear-gradient(90deg,transparent 0%,rgba(13,17,23,.4) 30%,rgba(13,17,23,.85) 100%);      display: flex; flex-direction: column; justify-content: flex-start; text-align: right;  } .feat-hero-overlay .btn { margin-top: auto; align-self: flex-end; }    @media (max-width: 560px) {     .footer-grid { grid-template-columns: repeat(2, 1fr); }     .footer-bottom { flex-direction: column; gap: 10px; text-align: center; } }  @media (max-width: 640px) {     .section-inner { padding: 0 8px; }     .section { padding: 5px 0; }     .section-heading { margin-bottom: 10px; }     .prod-grid { gap: 3px; }     .prod-card-body { padding: 15px; }     .cta-strip { padding: 24px 0; }     .feat-hero { min-height: 420px; }     .feat-hero-overlay { padding: 40px 15px 20px 15px; }     .feat-hero-overlay h2 { font-size: 26px; }     .feat-hero-overlay .btn { height: 52px; font-size: 16px; }     .cat-banner-overlay { padding: 40px 15px; }     .cat-banner-text h3 { font-size: 26px; color: #fff; }     .cat-banner-text p { font-size: 13px; color: rgba(255,255,255,.6); } }  /* ===== MOBILE FIXES ===== */ @media (max-width: 768px) {     /* OEM form single column on mobile */     .oem-grid { grid-template-columns: 1fr !important; }     /* Product detail hero height */     .page-hero { min-height: 340px; } } @media (max-width: 480px) {     /* Product grid 1-column on small phones */     .prod-grid { grid-template-columns: 1fr; } }  /* ===== PAGINATION ===== */ .pagination {     display: flex; justify-content: center; gap: 8px;     margin-top: 40px; padding-top: 24px;     border-top: 1px solid #F0F0F0; } .page-link {     display: inline-flex; align-items: center; justify-content: center;     width: 40px; height: 40px; border-radius: 8px;     font-size: 14px; font-weight: 600; color: #666;     border: 1px solid #E0E0E0; transition: all .2s; } .page-link:hover { background: #F5F5F5; color: #0D1117; } .page-link.active { background: #0D1117; color: #fff; border-color: #0D1117; }

/* Only the visible HERO slide may receive clicks. */
.hero-slide { pointer-events: none; }
.hero-slide.active { pointer-events: auto; }

/* Product-detail media: keep every primary product image inside its square frame. */
.product-detail-media {
    width: min(100%, 480px);
    aspect-ratio: 1 / 1;
    max-height: 480px;
    border-radius: 16px;
    overflow: hidden;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-detail-media .product-detail-image {
    display: block;
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    object-position: center;
}

@media (max-width: 768px) {
    .product-detail-media {
        width: 100%;
        max-width: 480px;
        margin-inline: auto;
    }
}

/* Desktop HERO uses no vertical padding; tablet and mobile retain their spacing. */
@media (min-width: 861px) {
    .hero .section-inner { padding: 0 20px; }
}

/* ===== HANDHELD LASER OVERVIEW ===== */
.laser-overview { padding: 64px 0 8px; background: #fff; }
.laser-overview-lead { max-width: 880px; margin-bottom: 32px; }
.laser-eyebrow { margin-bottom: 8px; color: #C8102E; font-size: 13px; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; }
.laser-overview-lead h2 { margin-bottom: 14px; }
.laser-overview-lead > p:last-child, .laser-family-grid p, .laser-use-grid p { color: #666; line-height: 1.75; }
.laser-family-grid, .laser-use-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-bottom: 24px; }
.laser-family-grid article, .laser-use-grid > div { border: 1px solid #ECEEF1; border-radius: 14px; padding: 28px; }
.laser-family-grid h3, .laser-use-grid h3 { margin-bottom: 10px; font-size: 21px; }
.laser-family-grid a { display: inline-flex; margin-top: 14px; font-size: 14px; font-weight: 700; }
.laser-family-grid a::after { content: '\2192'; margin-left: 7px; }
.laser-catalog-links { display: flex; gap: 12px; flex-wrap: wrap; padding-top: 8px; }
.laser-pdf-btn { border: 1px solid #D9DDE3; background: #fff; color: #0D1117; }
@media (max-width: 720px) {
    .laser-overview { padding: 40px 0 8px; }
    .laser-family-grid, .laser-use-grid { grid-template-columns: 1fr; gap: 12px; margin-bottom: 12px; }
    .laser-family-grid article, .laser-use-grid > div { padding: 20px; }
    .laser-catalog-links .btn { width: 100%; }
}

/* Simplified-Chinese typography; layout and images match the English source. */
/* Font choice (2026-09-05): align with the legacy www.headux.cn (faisco build) which uses system "Microsoft YaHei" with no webfont. We drop Noto Sans SC and rely on the OS YaHei / PingFang SC / Heiti stack for fast first paint and zero font-flicker; cross-device consistency is acceptable for a brand site. */
html[lang="zh-CN"] body{font-family:"Microsoft YaHei","微软雅黑","PingFang SC","Hiragino Sans GB","Heiti SC","Microsoft JhengHei",Arial,sans-serif}
html[lang="zh-CN"] .page-hero h1,html[lang="zh-CN"] h1,html[lang="zh-CN"] h2,html[lang="zh-CN"] h3{letter-spacing:0}
/* Reference: Aotai Electric (aotaidianqi.com) uses 14px body with line-height ~2 for CJK readability. We keep the 16px base for accessibility but adopt the generous line-height and tighter section headings. */
html[lang="zh-CN"] body{line-height:1.75}
html[lang="zh-CN"] p{line-height:1.9}
html[lang="zh-CN"] h1,html[lang="zh-CN"] h2,html[lang="zh-CN"] h3,html[lang="zh-CN"] h4{line-height:1.4}
html[lang="zh-CN"] .section-heading h2{font-size:28px}
/* GEO definition paragraph in page heroes (see keyword-map-top12.md). */
.page-hero .hero-geo{font-size:15px;line-height:1.7;max-width:760px;margin-top:14px;opacity:.94}