:root{
  --dl-primary:#C8102E;
  --dl-primary-2:#E01E3A;
  --dl-dark:#1a3a5c;
  --dl-dark-2:#2a5278;
  --dl-text:#1f2937;
  --dl-text-sub:#6b7280;
  --dl-bg:#f8fafc;
  --dl-border:#e5e7eb;
  --dl-radius:10px;
  --dl-ease:cubic-bezier(.4,0,.2,1);
}
.dl-hero{position:relative;min-height:380px;display:flex;align-items:center;background-size:cover;background-position:center;background-color:#1a3a5c;overflow:hidden}
.dl-hero-overlay{position:absolute;inset:0;background:linear-gradient(105deg,rgba(26,58,92,.88) 0%,rgba(26,58,92,.6) 50%,rgba(26,58,92,.3) 100%)}
.dl-hero-deco{position:absolute;top:-100px;right:-100px;width:400px;height:400px;background:radial-gradient(circle,rgba(200,16,46,.35) 0%,transparent 70%);pointer-events:none}
.dl-hero-inner{position:relative;z-index:2;padding:50px 0;width:75%;max-width:1600px;margin:0 auto;transition:width .3s ease}
.dl-breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:24px;flex-wrap:wrap}
.dl-breadcrumb a{color:rgba(255,255,255,.85);text-decoration:none;transition:color .25s var(--dl-ease)}
.dl-breadcrumb a:hover{color:#fff}
.dl-bc-sep{opacity:.5}
.dl-bc-current{color:#fff;font-weight:500}
.dl-hero-content{max-width:680px}
.dl-hero-title{font-size:clamp(28px,3vw,42px);color:#fff;font-weight:800;letter-spacing:-.02em;margin:0 0 14px;line-height:1.2}
.dl-hero-desc{font-size:clamp(14px,1vw,16px);color:rgba(255,255,255,.88);margin:0 0 28px;line-height:1.7}
.dl-hero-stats{display:flex;gap:36px;flex-wrap:wrap}
.dl-stat{display:flex;flex-direction:column;gap:2px}
.dl-stat-num{font-size:24px;font-weight:800;color:#fff;letter-spacing:-.01em}
.dl-stat-label{font-size:12px;color:rgba(255,255,255,.7);text-transform:uppercase;letter-spacing:.05em}

.dl-main-section{padding:56px 0 60px;background:#fff}
.dl-main-inner{width:75%;max-width:1600px;margin:0 auto;transition:width .3s ease}

.dl-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:80px 20px;color:var(--dl-text-sub)}
.dl-empty svg{color:#cbd5e1;margin-bottom:18px}
.dl-empty p{font-size:18px;color:var(--dl-text);font-weight:600;margin:0 0 6px}
.dl-empty span{font-size:14px}
.dl-empty a{color:var(--dl-primary);font-weight:600;text-decoration:none}
.dl-empty a:hover{text-decoration:underline}

.dl-cat-nav{display:flex;align-items:center;gap:18px;padding:14px 18px;background:var(--dl-bg);border:1px solid var(--dl-border);border-radius:var(--dl-radius);margin-bottom:36px;flex-wrap:wrap}
.dl-cat-nav-label{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--dl-dark);padding-right:18px;border-right:1px solid var(--dl-border);flex-shrink:0}
.dl-cat-nav-label svg{color:var(--dl-primary)}
.dl-cat-list{display:flex;gap:8px;flex-wrap:wrap}
.dl-cat-chip{display:inline-flex;align-items:center;padding:7px 16px;border-radius:100px;background:#fff;border:1px solid var(--dl-border);font-size:13px;font-weight:500;color:var(--dl-text-sub);text-decoration:none;cursor:pointer;transition:all .25s var(--dl-ease);white-space:nowrap;font-family:inherit;line-height:1.4}
.dl-cat-chip:hover{border-color:var(--dl-primary);color:var(--dl-primary);background:rgba(200,16,46,.04)}
.dl-cat-chip.active{background:linear-gradient(135deg,var(--dl-primary),var(--dl-primary-2));color:#fff!important;border-color:transparent;box-shadow:0 4px 12px rgba(200,16,46,.3)}

.dl-group{margin-bottom:48px;scroll-margin-top:90px}
.dl-pager{display:flex;justify-content:center;margin-top:8px}
.dl-load-more{display:inline-flex;align-items:center;justify-content:center;padding:12px 36px;background:#fff;border:1px solid var(--dl-border);border-radius:var(--dl-radius);color:var(--dl-dark);font-size:14px;font-weight:600;cursor:pointer;transition:all .25s var(--dl-ease);font-family:inherit;line-height:1.4}
.dl-load-more:hover{border-color:var(--dl-primary);color:var(--dl-primary);background:rgba(200,16,46,.04);transform:translateY(-1px)}
.dl-group-head{display:flex;align-items:baseline;justify-content:space-between;gap:20px;margin-bottom:22px;flex-wrap:wrap}
.dl-group-title{display:flex;align-items:center;gap:12px}
.dl-group-bar{width:5px;height:24px;background:linear-gradient(180deg,var(--dl-primary),var(--dl-primary-2));border-radius:2px;flex-shrink:0}
.dl-group-title h2{font-size:22px;font-weight:700;color:var(--dl-text);margin:0;letter-spacing:-.01em}
.dl-group-count{display:inline-flex;align-items:center;justify-content:center;min-width:26px;height:22px;padding:0 8px;border-radius:100px;background:rgba(200,16,46,.1);color:var(--dl-primary);font-size:12px;font-weight:600}
.dl-group-desc{font-size:13px;color:var(--dl-text-sub);margin:0}

.dl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.dl-card{display:grid;grid-template-columns:auto 1fr auto;gap:18px;padding:20px 22px;background:#fff;border:1px solid var(--dl-border);border-radius:var(--dl-radius);align-items:start;transition:all .3s var(--dl-ease);position:relative;overflow:hidden}
.dl-card::before{content:"";position:absolute;left:0;top:0;width:3px;height:100%;background:linear-gradient(180deg,var(--dl-primary),var(--dl-primary-2));transform:scaleY(0);transform-origin:top;transition:transform .35s var(--dl-ease)}
.dl-card:hover{border-color:transparent;box-shadow:0 10px 28px rgba(26,58,92,.1);transform:translateY(-2px)}
.dl-card:hover::before{transform:scaleY(1)}

.dl-card-icon{width:52px;height:52px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:var(--dl-bg);flex-shrink:0;transition:all .3s var(--dl-ease)}
.dl-icon-pdf{background:rgba(239,68,68,.1);color:#ef4444}
.dl-icon-zip{background:rgba(245,158,11,.1);color:#f59e0b}
.dl-icon-cad,.dl-icon-3d{background:rgba(26,58,92,.1);color:#1a3a5c}
.dl-icon-doc{background:rgba(59,130,246,.1);color:#3b82f6}
.dl-icon-xls{background:rgba(34,197,94,.1);color:#22c55e}
.dl-icon-img{background:rgba(168,85,247,.1);color:#a855f7}
.dl-icon-file{background:rgba(107,114,128,.1);color:#6b7280}
.dl-card:hover .dl-card-icon{transform:scale(1.05)}

.dl-card-body{display:flex;flex-direction:column;gap:6px;min-width:0}
.dl-card-title{font-size:15px;font-weight:700;color:var(--dl-text);margin:0;line-height:1.4;letter-spacing:-.005em}
.dl-card-subtitle{font-size:12px;color:var(--dl-primary);font-weight:600;letter-spacing:.01em}
.dl-card-summary{font-size:12px;color:var(--dl-text-sub);margin:0;line-height:1.6;max-height:3.2em;overflow:hidden}
.dl-card-meta{display:flex;gap:14px;flex-wrap:wrap;margin-top:4px;font-size:11px;color:var(--dl-text-sub)}
.dl-meta-file{max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-family:'Courier New',monospace}
.dl-meta-size{flex-shrink:0;font-weight:600;color:var(--dl-dark)}

.dl-card-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;background:linear-gradient(135deg,var(--dl-primary),var(--dl-primary-2));color:#fff!important;font-size:13px;font-weight:600;text-decoration:none;border-radius:6px;transition:all .25s var(--dl-ease);white-space:nowrap;flex-shrink:0;border:none;cursor:pointer}
.dl-card-actions{display:flex;flex-direction:column;gap:8px;flex-shrink:0}
.dl-card-view{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;background:#fff;border:1px solid var(--dl-border);color:var(--dl-dark);font-size:13px;font-weight:600;text-decoration:none;border-radius:6px;transition:all .25s var(--dl-ease);white-space:nowrap;cursor:pointer}
.dl-card-view:hover{border-color:var(--dl-primary);color:var(--dl-primary);background:rgba(200,16,46,.04)}
.dl-card-view svg{width:15px;height:15px;flex-shrink:0}
.dl-card-btn:hover{background:linear-gradient(135deg,var(--dl-primary-2),var(--dl-primary));box-shadow:0 6px 16px rgba(200,16,46,.35);transform:translateY(-1px)}
.dl-card-btn svg{transition:transform .25s var(--dl-ease)}
.dl-card-btn:hover svg{transform:translateY(1px)}

.dl-cta{background:linear-gradient(135deg,var(--dl-dark),var(--dl-dark-2));padding:48px 0;position:relative;overflow:hidden}
.dl-cta::before{content:"";position:absolute;top:-50%;right:-10%;width:400px;height:400px;background:radial-gradient(circle,rgba(200,16,46,.3) 0%,transparent 70%);pointer-events:none}
.dl-cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.dl-cta-text h2{color:#fff;font-size:24px;font-weight:700;margin:0 0 8px;letter-spacing:-.01em}
.dl-cta-text p{color:rgba(255,255,255,.85);font-size:14px;margin:0}
.dl-cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.dl-cta-btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 28px;font-size:14px;font-weight:600;text-decoration:none;border-radius:6px;transition:all .25s var(--dl-ease);white-space:nowrap}
.dl-cta-primary{background:linear-gradient(135deg,var(--dl-primary),var(--dl-primary-2));color:#fff!important;box-shadow:0 4px 14px rgba(200,16,46,.35)}
.dl-cta-primary:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(200,16,46,.45)}
.dl-cta-ghost{background:rgba(255,255,255,.08);color:#fff!important;border:1px solid rgba(255,255,255,.3);backdrop-filter:blur(6px)}
.dl-cta-ghost:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.5)}

@media(max-width:1199px){
  .dl-hero{min-height:340px}
  .dl-grid{grid-template-columns:1fr}
  .dl-cta-inner{flex-direction:column;text-align:center}
}
@media(max-width:767px){
  .dl-hero{min-height:260px}
  .dl-hero-inner{padding:36px 0}
  .dl-main-section{padding:36px 0 40px}
  .dl-hero-stats{gap:20px}
  .dl-stat-num{font-size:20px}
  .dl-cat-nav{padding:10px 12px;gap:10px}
  .dl-cat-nav-label{padding-right:10px;font-size:12px}
  .dl-cat-chip{padding:6px 12px;font-size:12px}
  .dl-group{margin-bottom:36px}
  .dl-group-title h2{font-size:18px}
  .dl-card{grid-template-columns:auto 1fr;grid-template-rows:auto auto;padding:16px;gap:14px}
  .dl-card-actions{grid-column:1/-1;flex-direction:row}
  .dl-card-actions .dl-card-btn,.dl-card-actions .dl-card-view{flex:1;justify-content:center}
  .dl-card-icon{width:44px;height:44px}
  .dl-card-title{font-size:14px}
  .dl-cta{padding:32px 0}
  .dl-cta-text h2{font-size:20px}
}