/* ufa-helix — Zigzag Offset | ซิกแซกเฮลิกซ์ */
:root{
    --vhx-bg:#0a0a14;--vhx-surface:#12122a;--vhx-main:#6c5ce7;--vhx-deep:#5345b8;
    --vhx-soft:#0e0e20;--vhx-accent:#a29bfe;--vhx-ink:#d8d4f0;--vhx-gray:#6a658a;--vhx-line:#1e1e3a;
}
*{box-sizing:border-box}
body{font-family:'Kodchasan',sans-serif;background:var(--vhx-bg);color:var(--vhx-ink);font-size:16px;line-height:1.74;margin:0}
a{color:var(--vhx-main);text-decoration:none;transition:.2s}
a:hover{color:var(--vhx-accent)}
img{max-width:100%}
/* Buttons */
.vhx-btn-main,.vhx-btn-ghost{display:inline-block;padding:10px 28px;font-weight:600;font-size:15px;border:1px solid transparent;line-height:1.6;border-radius:30px}
.vhx-btn-main{background:linear-gradient(135deg,var(--vhx-main),var(--vhx-accent));color:#fff}
.vhx-btn-main:hover{background:var(--vhx-accent);color:#0a0a14}
.vhx-btn-ghost{background:transparent;border-color:var(--vhx-main);color:var(--vhx-main)}
.vhx-btn-ghost:hover{border-color:var(--vhx-accent);color:var(--vhx-accent);background:rgba(108,92,231,.08)}
.vhx-btn-lg{padding:13px 36px;font-size:16.5px}
.vhx-btn-sm{padding:7px 20px;font-size:13.5px}
.vhx-btn-nav{padding:7px 18px;font-size:13.5px}
/* Header */
.vhx-header{position:sticky;top:0;z-index:100;background:rgba(14,14,32,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--vhx-line)}
.vhx-header.scrolled{box-shadow:0 4px 20px rgba(0,0,0,.4)}
.vhx-ticker{background:linear-gradient(90deg,var(--vhx-main),var(--vhx-accent));padding:6px 0;font-size:13px;color:#fff}
.vhx-ticker-inner{display:flex;align-items:center;gap:12px}
.vhx-ticker-tag{background:rgba(255,255,255,.2);padding:1px 8px;border-radius:10px;font-size:11px;font-weight:700}
.vhx-header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 0;gap:16px}
.vhx-brand{display:flex;align-items:center;gap:10px}
.vhx-brand-gem{display:flex;align-items:center;justify-content:center;width:38px;height:38px;background:linear-gradient(135deg,var(--vhx-main),var(--vhx-accent));color:#fff;font-weight:700;font-size:18px;border-radius:10px;clip-path:polygon(20% 0,100% 0,80% 100%,0 100%)}
.vhx-brand-text b{display:block;font-size:16px;font-weight:700;color:var(--vhx-ink)}
.vhx-brand-text small{font-size:11px;color:var(--vhx-gray);letter-spacing:1px}
.vhx-nav-wrap{display:flex;align-items:center;gap:20px}
.vhx-nav{list-style:none;display:flex;align-items:center;gap:4px;margin:0;padding:0;flex-wrap:wrap}
.vhx-nav a{display:block;padding:7px 14px;font-size:14px;color:var(--vhx-ink);border-radius:20px;transition:.2s}
.vhx-nav a:hover{background:var(--vhx-soft);color:var(--vhx-accent)}
.vhx-menu-drop{position:relative}
.vhx-menu-link{display:flex;align-items:center;gap:4px;cursor:pointer}
.vhx-caret{font-size:10px}
.vhx-menu-panel{position:absolute;top:100%;left:0;background:var(--vhx-surface);border:1px solid var(--vhx-line);border-radius:12px;padding:16px;min-width:220px;max-height:0;overflow:hidden;opacity:0;transition:.3s;z-index:200}
.vhx-menu-drop:hover .vhx-menu-panel,.vhx-menu-drop.show .vhx-menu-panel{max-height:500px;opacity:1;padding:16px}
.vhx-menu-group{margin-bottom:12px}
.vhx-menu-cat{font-weight:700;font-size:14px;color:var(--vhx-accent)!important;padding:4px 8px!important;border-radius:6px!important}
.vhx-menu-subs{padding-left:12px}
.vhx-menu-subs a{font-size:13px;padding:3px 8px!important}
.vhx-nav-btns{display:flex;gap:8px}
.vhx-toggle{display:none;background:none;border:1px solid var(--vhx-line);color:var(--vhx-ink);font-size:20px;padding:4px 10px;border-radius:8px;cursor:pointer}
/* Hero */
.vhx-hero{background:radial-gradient(ellipse at top,var(--vhx-soft) 0%,var(--vhx-bg) 60%);padding:70px 0 50px;text-align:center;position:relative;overflow:hidden}
.vhx-hero::before{content:"";position:absolute;top:-50%;left:-10%;width:60%;height:200%;background:radial-gradient(circle,var(--vhx-main) 0%,transparent 60%);opacity:.12;transform:rotate(15deg)}
.vhx-hero::after{content:"";position:absolute;top:-30%;right:-10%;width:50%;height:180%;background:radial-gradient(circle,var(--vhx-accent) 0%,transparent 60%);opacity:.1;transform:rotate(-12deg)}
.vhx-hero-inner{position:relative;z-index:1;max-width:760px;margin:0 auto}
.vhx-hero-h1{font-size:38px;font-weight:700;margin:0 0 16px;line-height:1.3}
.vhx-hero-word{display:block;background:linear-gradient(90deg,var(--vhx-main),var(--vhx-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.vhx-hero-p{font-size:16px;color:var(--vhx-gray);line-height:1.8;margin:0 0 28px}
.vhx-hero-btns{display:flex;gap:12px;justify-content:center}
/* Zone — Zigzag Offset (KEY differentiator) */
.vhx-zone{padding:48px 0;transition:.3s}
.vhx-zone-left{margin-left:8%}
.vhx-zone-right{margin-right:8%}
.vhx-zone h2{font-size:24px;font-weight:700;margin:0 0 8px;color:var(--vhx-ink)}
.vhx-zone>p{font-size:14px;color:var(--vhx-gray);margin:0 0 24px}
.vhx-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.vhx-card{display:flex;flex-direction:column;gap:4px;text-align:center}
.vhx-card img{width:100%;height:110px;object-fit:cover;border-radius:10px;border:1px solid var(--vhx-line);transition:.2s}
.vhx-card:hover img{border-color:var(--vhx-accent);transform:scale(1.03)}
.vhx-card b{font-size:13px;font-weight:600;color:var(--vhx-ink);margin-top:6px}
/* Section */
.vhx-section{padding:66px 0}
.vhx-section-tint{background:var(--vhx-surface)}
.vhx-section-title{text-align:center;margin-bottom:40px}
.vhx-section-title h2{font-size:28px;font-weight:700;margin:0 0 8px;color:var(--vhx-ink)}
.vhx-section-title p{color:var(--vhx-gray);margin:0;font-size:15px}
/* Articles */
.vhx-art-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.vhx-art-card{background:var(--vhx-bg);border:1px solid var(--vhx-line);border-radius:12px;overflow:hidden;transition:.2s}
.vhx-art-card:hover{border-color:var(--vhx-main)}
.vhx-art-card .news-img img{width:100%;height:160px;object-fit:cover}
.vhx-art-card .news-body{padding:16px}
.vhx-art-card h4{font-size:15px;font-weight:600;margin:0 0 8px}
.vhx-art-card h4 a{color:var(--vhx-ink)}
.vhx-art-card h4 a:hover{color:var(--vhx-main)}
.vhx-art-card p{font-size:13px;color:var(--vhx-gray);margin:0 0 8px;line-height:1.6}
.vhx-art-card .news-meta{display:flex;gap:12px;font-size:12px;color:var(--vhx-gray)}
/* FAQ */
.vhx-faq{max-width:800px;margin:0 auto}
.vhx-faq-item{border:1px solid var(--vhx-line);border-radius:12px;margin-bottom:10px;overflow:hidden;background:var(--vhx-bg)}
.vhx-faq-btn{width:100%;display:flex;justify-content:space-between;align-items:center;gap:12px;background:none;border:0;padding:16px 20px;font-family:inherit;font-size:15px;font-weight:600;color:var(--vhx-ink);text-align:left;cursor:pointer}
.vhx-faq-btn:hover{color:var(--vhx-accent)}
.vhx-faq-btn.active,.vhx-faq-item.open .vhx-faq-btn{color:var(--vhx-accent)}
.vhx-faq-ico{font-size:14px;color:var(--vhx-main);transition:.3s}
.vhx-faq-btn.active .vhx-faq-ico,.vhx-faq-item.open .vhx-faq-ico{transform:rotate(180deg)}
.vhx-faq-body{max-height:0;overflow:hidden;transition:.3s}
.vhx-faq-body.show,.vhx-faq-item.open .vhx-faq-body{max-height:300px;padding:0 20px 16px}
.vhx-faq-body p{margin:0;font-size:14px;color:var(--vhx-gray);line-height:1.8}
/* Footer */
.vhx-footer{background:var(--vhx-surface);border-top:1px solid var(--vhx-line);padding:50px 0 0}
.vhx-foot-top{display:flex;justify-content:space-between;align-items:flex-start;gap:30px;padding-bottom:30px;border-bottom:1px solid var(--vhx-line);flex-wrap:wrap}
.vhx-foot-lead{max-width:400px}
.vhx-foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.vhx-foot-brand img{height:32px}
.vhx-foot-brand b{font-size:18px;color:var(--vhx-ink)}
.vhx-foot-lead p{font-size:14px;color:var(--vhx-gray);line-height:1.7;margin:0}
.vhx-foot-cta{text-align:right}
.vhx-foot-cta span{display:block;font-size:14px;color:var(--vhx-gray);margin-bottom:10px}
.vhx-foot-btns{display:flex;gap:8px}
.vhx-foot-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;padding:30px 0}
.vhx-foot-col h4{font-size:14px;font-weight:700;color:var(--vhx-accent);margin:0 0 12px;text-transform:uppercase;letter-spacing:1px}
.vhx-foot-col a{display:block;font-size:14px;color:var(--vhx-gray);padding:4px 0;transition:.2s}
.vhx-foot-col a:hover{color:var(--vhx-accent);padding-left:4px}
.vhx-links-row{padding:16px 0;border-top:1px solid var(--vhx-line);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.vhx-links-label{font-size:13px;color:var(--vhx-gray);margin-right:8px}
.vhx-link-item{font-size:13px;color:var(--vhx-gray);padding:3px 10px;border:1px solid var(--vhx-line);border-radius:6px;transition:.2s}
.vhx-link-item:hover{color:var(--vhx-accent);border-color:var(--vhx-accent)}
.vhx-foot-base{text-align:center;padding:24px 0;border-top:1px solid var(--vhx-line)}
.vhx-foot-base p{font-size:13px;color:var(--vhx-gray);margin:0 0 4px}
.vhx-legal{font-size:12px!important;color:var(--vhx-gray)!important}
.vhx-icp a{color:var(--vhx-gray)}
/* Responsive */
@media(max-width:991px){
    .vhx-nav-wrap{position:fixed;top:0;right:-100%;width:280px;height:100vh;background:var(--vhx-surface);flex-direction:column;align-items:flex-start;padding:70px 20px 20px;gap:16px;transition:.3s;overflow-y:auto;z-index:150}
    .vhx-nav-wrap.show,.vhx-nav-wrap.open{right:0}
    .vhx-nav{flex-direction:column;align-items:flex-start;width:100%}
    .vhx-nav a{width:100%;padding:10px 14px}
    .vhx-toggle{display:block}
    .vhx-zone-left,.vhx-zone-right{margin-left:0;margin-right:0}
    .vhx-grid{grid-template-columns:repeat(2,1fr)}
    .vhx-art-grid{grid-template-columns:1fr}
    .vhx-foot-cols{grid-template-columns:1fr}
    .vhx-hero-h1{font-size:28px}
    .vhx-foot-cta{text-align:left}
}

/* ---- shared skeleton (list / detail / sidebar / share) ---- */
.vhx-section-title{text-align:center;margin-bottom:38px}
.vhx-section-title h2{font-size:30px;font-weight:700;color:var(--vhx-deep);margin:0 0 8px;position:relative;display:inline-block;padding-bottom:12px}
.vhx-section-title h2::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:0;width:64px;height:3px;background:var(--vhx-accent);border-radius:2px}
.vhx-section-title p{color:var(--vhx-gray);margin:8px 0 0}
.vhx-title-left{text-align:left}
.vhx-title-left h2::after{left:0;transform:none}
.vhx-btn-outline{display:inline-block;padding:7px 20px;font-size:13.5px;font-weight:600;border:1px solid var(--vhx-main);color:var(--vhx-main);border-radius:20px;background:transparent;transition:.2s}
.vhx-btn-outline:hover{border-color:var(--vhx-accent);color:var(--vhx-accent)}
.vhx-news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.vhx-news-card{background:var(--vhx-surface);border:1px solid var(--vhx-line);border-radius:8px;overflow:hidden;transition:.25s}
.vhx-news-card:hover{transform:translateY(-4px);box-shadow:0 12px 24px rgba(0,0,0,.12)}
.vhx-news-card .news-img{height:160px;overflow:hidden}
.vhx-news-card .news-img img{width:100%;height:100%;object-fit:cover;transition:.3s}
.vhx-news-card:hover .news-img img{transform:scale(1.06)}
.vhx-news-card .news-body{padding:14px 16px}
.vhx-news-card h4{font-size:15.5px;margin:0 0 8px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.vhx-news-card h4 a{color:var(--vhx-ink)}
.vhx-news-card h4 a:hover{color:var(--vhx-main)}
.vhx-news-card p{font-size:13px;color:var(--vhx-gray);margin:0 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;gap:14px;font-size:12px;color:var(--vhx-gray);border-top:1px dashed var(--vhx-line);padding-top:8px}
/* Sidebar */
.vhx-sidebar{position:sticky;top:120px}
.vhx-sidebar-card{background:var(--vhx-surface);border:1px solid var(--vhx-line);border-radius:8px;padding:18px;margin-bottom:20px}
.vhx-sidebar-title{font-weight:700;color:var(--vhx-deep);border-bottom:2px solid var(--vhx-main);padding-bottom:9px;margin-bottom:12px;font-size:16px}
.vhx-sidebar-list{list-style:none;margin:0;padding:0}
.vhx-sidebar-list li{padding:7px 0;border-bottom:1px dashed var(--vhx-line);font-size:14px}
.vhx-sidebar-list li:last-child{border-bottom:0}
.vhx-sidebar-list a{color:var(--vhx-ink);display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.vhx-sidebar-list a:hover{color:var(--vhx-main)}
.vhx-tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.vhx-tag-cloud a{background:var(--vhx-soft);border:1px solid var(--vhx-line);color:var(--vhx-main);font-size:13px;border-radius:4px;padding:3px 11px}
.vhx-tag-cloud a:hover{background:var(--vhx-main);border-color:var(--vhx-main);color:#fff}
/* Breadcrumb / list / pagination / search */
.vhx-breadcrumb{padding:18px 0 6px;font-size:13.5px;color:var(--vhx-gray)}
.vhx-breadcrumb a{color:var(--vhx-gray)}
.vhx-breadcrumb a:hover{color:var(--vhx-main)}
.vhx-breadcrumb .separator{margin:0 7px;color:var(--vhx-line)}
.vhx-breadcrumb ul{list-style:none;display:flex;flex-wrap:wrap;margin:0;padding:0;gap:6px}
.vhx-list-item{display:flex;gap:18px;background:var(--vhx-surface);border:1px solid var(--vhx-line);border-radius:8px;padding:14px;margin-bottom:16px;transition:.25s}
.vhx-list-item:hover{box-shadow:0 10px 22px rgba(0,0,0,.1);transform:translateY(-2px)}
.vhx-list-item .list-img{flex:none;width:220px;height:140px;border-radius:6px;overflow:hidden}
.vhx-list-item .list-img img{width:100%;height:100%;object-fit:cover}
.vhx-list-item h3{font-size:17px;margin:0 0 8px;line-height:1.5}
.vhx-list-item h3 a{color:var(--vhx-ink)}
.vhx-list-item h3 a:hover{color:var(--vhx-main)}
.list-desc{font-size:13.5px;color:var(--vhx-gray);margin:0 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.list-meta{display:flex;gap:16px;font-size:12.5px;color:var(--vhx-gray)}
.vhx-pagination{display:flex;justify-content:center;margin:26px 0}
.vhx-pagination ul{list-style:none;display:flex;gap:8px;margin:0;padding:0}
.vhx-pagination li a,.vhx-pagination li span{display:inline-block;min-width:38px;text-align:center;padding:7px 12px;background:var(--vhx-surface);border:1px solid var(--vhx-line);border-radius:6px;color:var(--vhx-ink);font-size:14px}
.vhx-pagination li.active span,.vhx-pagination li a:hover{background:var(--vhx-main);border-color:var(--vhx-main);color:#fff}
.vhx-search-form{display:flex;gap:10px;margin:14px 0 26px}
.vhx-search-form input{flex:1;border:1.5px solid var(--vhx-line);border-radius:6px;padding:11px 16px;font-family:inherit;font-size:15px;background:var(--vhx-surface);color:var(--vhx-ink)}
.vhx-search-form input:focus{outline:none;border-color:var(--vhx-main)}
.vhx-search-form button{background:var(--vhx-main);color:#fff;border:0;border-radius:6px;padding:11px 28px;font-family:inherit;font-size:15px;font-weight:600;cursor:pointer;box-shadow:0 3px 0 var(--vhx-deep)}
.vhx-search-form button:hover{background:var(--vhx-deep)}
.vhx-no-data{text-align:center;padding:60px 20px;background:var(--vhx-surface);border:1px dashed var(--vhx-line);border-radius:8px}
.vhx-no-data .no-icon{font-size:42px;color:var(--vhx-main);margin-bottom:10px}
.vhx-no-data p{color:var(--vhx-gray);margin:0}
/* Detail */
.vhx-detail{background:var(--vhx-surface);border:1px solid var(--vhx-line);border-radius:8px;padding:30px;margin-bottom:26px}
.vhx-detail-narrow{max-width:860px;margin:0 auto}
.vhx-detail-title{font-size:27px;font-weight:700;color:var(--vhx-deep);line-height:1.4;margin:0 0 14px}
.vhx-detail-meta{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13px;color:var(--vhx-gray);border-bottom:1px dashed var(--vhx-line);padding-bottom:14px;margin-bottom:16px}
.vhx-detail-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.vhx-detail-body{font-size:15.5px;line-height:1.9;color:var(--vhx-ink);word-break:break-word}
.vhx-detail-body img{border-radius:6px}
.vhx-page-code{margin-top:18px;text-align:center}
.vhx-detail-nav{display:flex;justify-content:space-between;gap:16px;border-top:1px dashed var(--vhx-line);margin-top:24px;padding-top:16px}
.vhx-detail-nav .nav-item{max-width:48%}
.vhx-detail-nav .nav-next{text-align:right;margin-left:auto}
.vhx-detail-nav .nav-label{font-size:12px;color:var(--vhx-gray);margin-bottom:3px}
.vhx-detail-nav a{font-size:14px;color:var(--vhx-ink)}
.vhx-detail-nav a:hover{color:var(--vhx-main)}
.vhx-related h3{font-size:20px;color:var(--vhx-deep);margin:0 0 16px}
.vhx-related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-bottom:26px}
/* Share */
.vhx-share-bar{display:flex;flex-wrap:wrap;align-items:center;gap:9px;border-top:1px dashed var(--vhx-line);margin-top:20px;padding-top:16px}
.vhx-share-bar .share-label{font-weight:700;color:var(--vhx-deep);font-size:14px}
.vhx-share-btn{display:inline-flex;align-items:center;gap:6px;background:var(--vhx-soft);border:1px solid var(--vhx-line);border-radius:6px;padding:5px 12px;font-size:13px;color:var(--vhx-ink);cursor:pointer;font-family:inherit}
.vhx-share-btn:hover{background:var(--vhx-main);border-color:var(--vhx-main);color:#fff}
.share-icon{width:16px;height:16px}
.vhx-share-float,.vhx-share-fixed{display:none}