/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Inter','Noto Sans SC',system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;color:#0f172a;background:#f8fafc;line-height:1.6;min-height:100vh;display:flex;flex-direction:column}
a{color:#6366f1;text-decoration:none;transition:color .2s}
a:hover{color:#4f46e5}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}

/* ===== Layout ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
main{flex:1}

/* ===== Header ===== */
.site-header{background:#fff;border-bottom:1px solid #e2e8f0;position:sticky;top:0;z-index:100;backdrop-filter:blur(12px);background:rgba(255,255,255,.92)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-size:1.5rem;font-weight:800;color:#0f172a;letter-spacing:-.025em}
.logo span{color:#6366f1}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:#475569;font-size:.938rem;font-weight:500;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:#6366f1}
.mobile-toggle{display:none;background:none;border:none;cursor:pointer;padding:4px}
.mobile-toggle svg{width:24px;height:24px;color:#475569}

/* ===== Hero ===== */
.hero{background:linear-gradient(135deg,#6366f1 0%,#8b5cf6 50%,#a78bfa 100%);color:#fff;padding:80px 0 52px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 50%,rgba(255,255,255,.08) 0%,transparent 60%);pointer-events:none}
.hero h1{font-size:3rem;font-weight:800;letter-spacing:-.03em;margin-bottom:16px;position:relative}
.hero p{font-size:1.25rem;opacity:.9;max-width:600px;margin:0 auto 32px;position:relative}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.18);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.25);padding:8px 20px;border-radius:100px;font-size:.875rem;font-weight:600;margin-bottom:24px;position:relative}
.hero-stats{display:flex;justify-content:center;gap:48px;margin-top:32px;position:relative}
.hero-stats .stat{text-align:center;display:flex;flex-direction:column;align-items:center;min-width:100px}
.hero-stats .stat-num{font-size:2rem;font-weight:800;line-height:1.2;height:2.4rem;display:flex;align-items:center;justify-content:center}
.hero-stats .stat-label{font-size:.875rem;opacity:.8;margin-top:4px}
.search-box{max-width:480px;margin:0 auto;position:relative}
.search-box input{width:100%;padding:14px 20px 14px 48px;border-radius:12px;border:2px solid rgba(255,255,255,.3);background:rgba(255,255,255,.15);backdrop-filter:blur(8px);color:#fff;font-size:1rem;outline:none;transition:all .2s}
.search-box input::placeholder{color:rgba(255,255,255,.65)}
.search-box input:focus{border-color:rgba(255,255,255,.6);background:rgba(255,255,255,.22)}
.search-box svg{position:absolute;left:16px;top:50%;transform:translateY(-50%);width:20px;height:20px;color:rgba(255,255,255,.7)}

/* ===== Icon Grid ===== */
.section-title{font-size:1.75rem;font-weight:700;margin-bottom:8px;letter-spacing:-.02em}
.section-desc{color:#64748b;margin-bottom:32px}
.icon-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;padding:48px 0 64px}
.icon-card{background:#fff;border-radius:16px;overflow:hidden;border:1px solid #e2e8f0;transition:transform .25s,box-shadow .25s;display:flex;flex-direction:column}
.icon-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(99,102,241,.12);border-color:#c7d2fe}
.icon-card .card-link{text-decoration:none;color:inherit;cursor:pointer;display:block}
.icon-card .card-img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#f1f5f9}
.icon-card .card-body{padding:20px}
.icon-card .card-title{font-size:1.125rem;font-weight:700;margin-bottom:6px;color:#0f172a}
.icon-card .card-desc{font-size:.875rem;color:#64748b;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.icon-card .card-footer{display:flex;align-items:center;justify-content:space-between;padding:12px 20px 16px;margin-top:auto}
.btn-card-download{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;padding:7px 16px;border-radius:8px;font-size:.8125rem;font-weight:600;transition:transform .2s,box-shadow .2s;text-decoration:none;white-space:nowrap}
.btn-card-download:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(99,102,241,.3);color:#fff}
.btn-card-download svg{width:14px;height:14px}
.badge-free{display:inline-flex;align-items:center;gap:4px;background:#ecfdf5;color:#059669;font-size:.75rem;font-weight:600;padding:4px 10px;border-radius:100px}
.badge-free svg{width:14px;height:14px}

/* ===== Detail Page ===== */
.breadcrumb{padding:20px 0;font-size:.875rem;color:#94a3b8}
.breadcrumb a{color:#6366f1}
.breadcrumb span{margin:0 8px;color:#cbd5e1}
.detail-page{padding-bottom:64px}
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.detail-img{width:100%;border-radius:16px;border:1px solid #e2e8f0;background:#f1f5f9;object-fit:contain}
.detail-info h1{font-size:2rem;font-weight:800;letter-spacing:-.02em;margin-bottom:16px}
.detail-info .desc{color:#475569;font-size:1.0625rem;line-height:1.7;margin-bottom:28px}
.detail-meta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.meta-tag{display:inline-flex;align-items:center;gap:6px;background:#f1f5f9;color:#475569;font-size:.8125rem;font-weight:500;padding:6px 14px;border-radius:100px}
.meta-tag svg{width:16px;height:16px}
.btn-download{display:inline-flex;align-items:center;gap:10px;background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;padding:14px 32px;border-radius:12px;font-size:1rem;font-weight:600;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s;text-decoration:none}
.btn-download:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(99,102,241,.35);color:#fff}
.btn-download svg{width:20px;height:20px}
.btn-back{display:inline-flex;align-items:center;gap:6px;color:#6366f1;font-size:.875rem;font-weight:500;padding:8px 0;transition:color .2s;text-decoration:none}
.btn-back:hover{color:#4f46e5}
.btn-back svg{width:18px;height:18px}

/* ===== Static Pages ===== */
.page-hero{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;padding:48px 0;text-align:center}
.page-hero h1{font-size:2.25rem;font-weight:800}
.page-content{max-width:800px;margin:0 auto;padding:48px 24px 64px}
.page-content h2{font-size:1.5rem;font-weight:700;margin:32px 0 12px;color:#1e293b}
.page-content h3{font-size:1.125rem;font-weight:600;margin:24px 0 8px;color:#334155}
.page-content p,.page-content li{color:#475569;line-height:1.8;margin-bottom:12px}
.page-content ul{padding-left:24px;list-style:disc}
.page-content a{color:#6366f1;text-decoration:underline}
.contact-email{display:inline-flex;align-items:center;gap:8px;background:#f1f5f9;padding:12px 24px;border-radius:12px;font-size:1.0625rem;font-weight:600;color:#6366f1;margin:12px 0}

/* ===== Footer ===== */
.site-footer{background:#0f172a;color:#94a3b8;padding:48px 0 24px;margin-top:auto}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;margin-bottom:36px}
.footer-brand .logo{color:#fff;margin-bottom:12px;display:inline-block}
.footer-brand p{font-size:.875rem;line-height:1.7;max-width:320px}
.footer-col h4{color:#e2e8f0;font-size:.875rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;margin-bottom:16px}
.footer-col a{display:block;color:#94a3b8;font-size:.875rem;margin-bottom:10px;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid #1e293b;padding-top:24px;display:flex;justify-content:space-between;align-items:center;font-size:.8125rem}
.footer-bottom a{color:#94a3b8}
.footer-bottom a:hover{color:#fff}

/* ===== Empty State ===== */
.empty-state{text-align:center;padding:80px 24px}
.empty-state svg{width:80px;height:80px;color:#cbd5e1;margin-bottom:20px}
.empty-state h2{font-size:1.5rem;font-weight:700;color:#334155;margin-bottom:8px}
.empty-state p{color:#64748b}

/* ===== No Results ===== */
.no-results{display:none;text-align:center;padding:60px 24px;color:#64748b}
.no-results.visible{display:block}

/* ===== Pagination ===== */
.pagination{display:flex;justify-content:center;align-items:center;gap:8px;padding:0 0 64px;flex-wrap:wrap}
.pagination.hidden{display:none}
.page-btn{min-width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;border:1px solid #e2e8f0;background:#fff;color:#475569;font-size:.875rem;font-weight:600;cursor:pointer;transition:all .2s;padding:0 4px}
.page-btn:hover{border-color:#c7d2fe;color:#6366f1;box-shadow:0 4px 12px rgba(99,102,241,.15)}
.page-btn.active{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;border-color:transparent}
.page-btn.active:hover{box-shadow:0 4px 12px rgba(99,102,241,.3)}
.page-btn:disabled{opacity:.4;cursor:not-allowed;pointer-events:none}
.page-btn.nav-btn{padding:0 16px;gap:6px}
.page-ellipsis{color:#94a3b8;font-size:.875rem;padding:0 4px}

/* ===== Responsive ===== */
@media(max-width:768px){
  .hero h1{font-size:2rem}
  .hero p{font-size:1.0625rem}
  .hero-stats{gap:24px}
  .hero-stats .stat-num{font-size:1.5rem}
  .detail-grid{grid-template-columns:1fr;gap:28px}
  .footer-inner{grid-template-columns:1fr;gap:32px}
  .header-inner{position:relative}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px;gap:12px;border-bottom:1px solid #e2e8f0;box-shadow:0 4px 12px rgba(0,0,0,.08)}
  .nav-links.open{display:flex}
  .mobile-toggle{display:block}
  .icon-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
  .page-btn{min-width:36px;height:36px;font-size:.8125rem}
  .page-btn.nav-btn{padding:0 12px}
}
@media(max-width:480px){
  .hero{padding:48px 0 40px}
  .hero h1{font-size:1.625rem}
  .icon-grid{grid-template-columns:1fr}
  .page-ellipsis{display:none}
  .page-btn.nav-btn{padding:0 10px;font-size:.75rem}
}