:root{
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --text:#111827;
  --muted:#6b7280;
  --bg:#f6f7fb;
  --card:#ffffff;
  --border:#e5e7eb;
  --danger:#dc2626;
  --success:#16a34a;
  --soft:#eef2ff;
  --shadow:0 12px 28px rgba(15,23,42,.08);
}
*{box-sizing:border-box}
html{min-height:100%;-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif;font-size:16px;line-height:1.55;letter-spacing:0;word-spacing:0;overflow-x:hidden;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body,button,input,select,textarea{font-family:Arial,Helvetica,sans-serif}
a{text-decoration:none;color:inherit}img,iframe,video,svg{max-width:100%}main{flex:1;width:100%}.container{width:min(1180px,calc(100% - 32px));margin:0 auto}
.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:72px;padding:12px 0}.brand{display:flex;align-items:center;gap:10px;min-width:0;color:var(--text)}.brand-logo{height:44px;width:auto;max-width:220px;object-fit:contain;display:block;flex:0 0 auto}.brand-text{display:flex;flex-direction:column;min-width:0;line-height:1.15}.brand-title{font-size:24px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.brand-text small{font-size:12px;color:var(--muted);font-weight:400;max-width:260px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.brand-mark{width:32px;height:32px;border-radius:8px;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:14px;flex:0 0 auto}.nav-toggle{display:none;border:1px solid var(--border);background:#fff;color:var(--text);border-radius:10px;padding:9px 12px;font-size:18px;line-height:1;cursor:pointer}.main-nav{display:flex;align-items:center;gap:6px}.main-nav a{display:flex;align-items:center;gap:6px;padding:9px 12px;border-radius:9px;font-size:15px;font-weight:700;color:#374151;line-height:1.25;transition:background .18s,color .18s,transform .18s}.main-nav a:hover{background:var(--soft);color:var(--primary);transform:translateY(-1px)}.nav-item{position:relative}.submenu{display:none;position:absolute;top:100%;left:0;min-width:220px;background:#fff;border:1px solid var(--border);border-radius:12px;padding:7px;box-shadow:0 14px 32px rgba(15,23,42,.14);z-index:120}.submenu a{padding:10px 11px;white-space:nowrap}.has-submenu:hover .submenu{display:block}.submenu-arrow{font-size:12px;color:var(--muted)}
.hero{padding:54px 0;background:#fff;border-bottom:1px solid var(--border)}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:center}.eyebrow{display:inline-flex;align-items:center;background:var(--soft);color:var(--primary-dark);border-radius:999px;padding:6px 12px;font-size:14px;font-weight:700;margin-bottom:14px}.hero h1{font-size:42px;line-height:1.15;margin:0 0 12px;font-weight:700}.hero p{font-size:18px;color:var(--muted);margin:0 0 22px}.hero-card,.content,.form-card,.meta-box,.card,.feature,.post-item{background:#fff;border:1px solid var(--border);border-radius:14px}.hero-card{padding:22px}.hero-card ul{margin:0;padding-left:21px}.hero-card img,.hero img{max-width:100%;height:auto}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid var(--primary);border-radius:10px;padding:11px 17px;background:var(--primary);color:#fff;font-weight:700;font-size:15px;line-height:1.2;cursor:pointer;transition:transform .18s,background .18s,border-color .18s,box-shadow .18s,opacity .18s}.btn:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(37,99,235,.22);opacity:.96}.btn.secondary,.btn.light{background:#fff;color:var(--primary)}.btn.secondary:hover,.btn.light:hover{background:#dbeafe;border-color:var(--primary)}.actions{display:flex;gap:10px;flex-wrap:wrap}
.section{padding:42px 0}.section-title{display:flex;justify-content:space-between;align-items:end;margin-bottom:20px;gap:18px}.section-title h2{font-size:30px;line-height:1.25;margin:0;font-weight:700}.section-title p{color:var(--muted);margin:6px 0 0}.grid{display:grid;gap:20px}.grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{overflow:hidden;display:flex;flex-direction:column;height:100%;position:relative;transition:transform .18s,box-shadow .18s,border-color .18s;background:#fff}.card:hover{border-color:#c7d2fe;box-shadow:var(--shadow)}.card-body{padding:22px;display:flex;flex-direction:column;flex:1}.card h3{margin:0 0 12px;font-size:21px;line-height:1.35;font-weight:700}.thumb{height:180px;background:#eef2ff;display:flex;align-items:center;justify-content:center;color:#6b7280;font-weight:700;text-align:center;overflow:hidden}.thumb img{width:100%;height:100%;object-fit:cover;display:block}.product-card{cursor:pointer}.product-card:hover{transform:translateY(-3px)}.product-card .card-body{text-align:center}.product-card h3 a:hover{color:var(--primary)}.product-icon{width:48px;height:48px;border-radius:14px;background:#f3f4f6;display:grid;place-items:center;margin:0 auto 13px;color:var(--icon-color,#2563eb);flex:0 0 auto}.product-icon .mono-icon,.product-icon svg{font-size:27px}.product-card p{display:none;color:var(--muted);margin:0 0 14px;text-align:left;line-height:1.55}.product-list-page .product-card p{display:block}.card-footer-action{margin-top:auto;padding-top:16px;display:flex;justify-content:center}.price{font-weight:700;margin:8px 0 12px;text-align:center;line-height:1.45;min-height:44px}.price-row{display:flex;align-items:baseline;justify-content:center;gap:7px;white-space:nowrap;margin:2px 0}.price-label{font-size:14px;font-weight:700;color:var(--text)}.old-price{font-size:14px;color:#9ca3af;text-decoration:line-through;font-weight:700}.sale-price{font-size:16px;color:var(--danger);font-weight:700}
.features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.feature{padding:18px;display:grid;grid-template-columns:auto 1fr;column-gap:12px;row-gap:4px;align-items:start}.feature-icon{width:34px;height:34px;display:grid;place-items:center;border-radius:9px;background:#f3f4f6;color:var(--icon-color,#2563eb);grid-row:1/3;flex:0 0 auto}.feature strong{display:block;font-size:17px;line-height:1.35;font-weight:700}.feature span{display:block;line-height:1.55;color:var(--muted)}
.form-card,.content,.meta-box{padding:24px}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.form-grid .full{grid-column:1/-1}label{display:block;font-weight:700;font-size:14px;margin-bottom:6px}input,select,textarea{width:100%;border:1px solid var(--border);border-radius:10px;padding:11px 12px;font-size:15px;background:#fff}textarea{min-height:130px;resize:vertical}.alert{padding:13px 14px;border-radius:10px;margin-bottom:14px}.alert.success{background:#dcfce7;color:#166534}.alert.error{background:#fee2e2;color:#991b1b}
.content h1{font-size:34px;line-height:1.25;margin-top:0;font-weight:700}.content h2,.content h3{font-weight:700}.content img,.rich-content img{max-width:100%;height:auto;border-radius:10px}.content table{border-collapse:collapse;width:100%;margin:16px 0;display:block;overflow-x:auto}.content td,.content th{border:1px solid var(--border);padding:9px}.rich-content h2,.rich-content h3{margin-top:20px}.rich-content ul,.rich-content ol{padding-left:24px}.rich-content blockquote{border-left:4px solid var(--primary);padding:8px 14px;background:#f8fafc;margin:14px 0}
.product-detail{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:24px}.product-hero{background:#fff;border:1px solid var(--border);border-radius:14px;padding:22px;margin-bottom:18px;display:flex;gap:20px;align-items:center;justify-content:space-between}.product-hero-main{display:flex;gap:16px;align-items:center;min-width:0}.product-hero h1{margin:0;font-size:30px;line-height:1.25;font-weight:700}.product-content-card{padding:24px}.meta-box{height:max-content;position:sticky;top:88px}.meta-box h2,.meta-box h3{margin-top:0;font-weight:700}.info-list{display:grid;gap:10px;margin:12px 0 16px}.info-list div{padding-bottom:10px;border-bottom:1px solid var(--border);overflow:hidden}.info-list div:last-child{border-bottom:0}.info-list span{float:right;text-align:right;max-width:55%}.sidebar-extra-content{border-top:1px solid var(--border);padding-top:14px;margin-top:14px}.download-box{background:#f8fafc;border:1px solid var(--border);border-radius:12px;padding:14px;margin-top:14px}.download-box h4{margin-top:0}.video-box{position:relative;width:100%;padding-top:56.25%;background:#111827;border-radius:12px;overflow:hidden;margin:16px 0}.video-box iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.related-posts{margin-top:28px}.related-posts ul{list-style:none;margin:0;padding:0}.related-posts li{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid var(--border);padding:12px 0}.related-posts a{font-weight:700;color:var(--primary)}.related-posts span{color:var(--muted);font-size:14px;white-space:nowrap}.post-date{color:var(--muted);font-size:14px;margin:6px 0 10px}.post-thumb{height:180px;background:#eef2ff;display:flex;align-items:center;justify-content:center;overflow:hidden}.post-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.site-footer{background:#fff;border-top:1px solid var(--border);padding:12px 0;margin-top:auto}.footer-one-line{display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap;font-size:14px;color:#4b5563;text-align:center}.floating-contact{position:fixed;right:16px;bottom:16px;display:flex;flex-direction:column;gap:8px;z-index:90}.floating-contact.left{left:16px;right:auto}.floating-contact a{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--primary);color:#fff;border-radius:999px;padding:9px 14px;font-weight:700;box-shadow:0 8px 18px rgba(37,99,235,.16);transition:transform .18s,box-shadow .18s,opacity .18s}.floating-contact a:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(37,99,235,.24);opacity:.96}
.mono-icon{display:inline-flex;align-items:center;justify-content:center;color:var(--icon-color,#2563eb);line-height:1;vertical-align:-0.15em}.mono-icon svg{width:1em;height:1em;display:block}.menu-mono-icon{font-size:16px;margin-right:2px}.feature-icon .mono-icon{font-size:19px}.floating-mono-icon{font-size:16px;color:currentColor}
@media(max-width:1100px){.grid.cols-4{grid-template-columns:repeat(3,minmax(0,1fr))}.container{width:min(100% - 28px, 980px)}}
@media(max-width:900px){body{font-size:15px}.container{width:calc(100% - 28px)}.nav-wrap{min-height:64px;padding:10px 0}.brand{gap:8px}.brand-logo{height:38px;max-width:180px}.brand-title{font-size:20px;max-width:210px}.brand-text small{display:none}.nav-toggle{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}.main-nav{display:none;position:absolute;left:14px;right:14px;top:64px;background:#fff;border:1px solid var(--border);border-radius:14px;padding:8px;flex-direction:column;align-items:stretch;gap:2px;box-shadow:0 16px 34px rgba(15,23,42,.14);max-height:calc(100vh - 84px);overflow:auto}.main-nav.open{display:flex}.nav-item{width:100%}.nav-item>a{width:100%;justify-content:flex-start}.submenu{position:static;display:block;min-width:0;box-shadow:none;border:0;background:#f8fafc;margin:3px 0 4px 22px;padding:5px;border-radius:10px}.submenu a{white-space:normal}.hero{padding:32px 0}.hero-grid,.product-detail{grid-template-columns:1fr;gap:18px}.hero h1{font-size:32px}.hero p{font-size:16px}.grid.cols-3,.grid.cols-4,.features,.form-grid{grid-template-columns:1fr}.section{padding:32px 0}.section-title{display:block;margin-bottom:16px}.section-title h2{font-size:26px}.section-title .btn{margin-top:12px}.thumb,.post-thumb{height:auto;min-height:150px;aspect-ratio:16/9}.card-body{padding:18px}.card h3{font-size:20px}.product-card p{text-align:left}.feature{grid-template-columns:auto 1fr}.product-hero{display:block}.product-hero-main{display:flex}.product-hero h1{font-size:25px}.meta-box{position:static}.info-list span{float:none;display:block;text-align:left;max-width:none;margin-top:4px}.footer-one-line{display:block;line-height:1.8}.floating-contact.hide-mobile{display:none}.content,.form-card,.meta-box,.product-content-card{padding:18px}.content h1{font-size:28px}}
@media(max-width:560px){.container{width:calc(100% - 24px)}.site-header{position:sticky}.nav-wrap{min-height:60px}.brand-logo{height:34px;max-width:130px}.brand-title{font-size:18px;max-width:190px}.nav-toggle{padding:8px 10px}.main-nav{top:60px;left:12px;right:12px}.hero{padding:26px 0}.hero h1{font-size:28px}.hero-card{padding:16px}.actions .btn,.btn{width:auto;min-height:42px}.grid{gap:16px}.section{padding:28px 0}.section-title h2{font-size:24px}.product-icon{width:44px;height:44px}.price{min-height:auto}.price-row{gap:5px}.price-label,.old-price{font-size:13px}.sale-price{font-size:15px}.card-footer-action .btn{width:100%}.product-hero-main{align-items:center}.product-hero h1{font-size:22px}.related-posts li{display:block}.related-posts span{display:block;margin-top:4px;white-space:normal}.floating-contact{right:12px;bottom:12px}.floating-contact.left{left:12px}.floating-contact a{padding:8px 12px;font-size:14px}.footer-one-line{font-size:13px}}
@media(max-width:380px){.brand-title{font-size:17px;max-width:160px}.brand-logo{height:32px;max-width:110px}.price-row{white-space:normal}.hero h1{font-size:25px}.card h3{font-size:19px}}