/* demo 平台前台样式 */
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'PingFang SC','Microsoft YaHei',sans-serif;background:#f8fafc;color:#1e293b;line-height:1.6}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{max-width:1280px;margin:0 auto;padding:0 24px}

/* Hero */
.hero{background:linear-gradient(135deg,#0F172A,#1E3A8A,#1E40AF);color:#fff;padding:70px 0 50px;text-align:center}
.hero h1{font-size:2.2rem;font-weight:800;margin-bottom:12px}
.hero p{font-size:1.05rem;color:#bfdbfe;max-width:640px;margin:0 auto}
.hero-stats{display:flex;justify-content:center;gap:40px;margin-top:28px;flex-wrap:wrap}
.hero-stat{text-align:center}
.hero-stat .num{font-size:1.8rem;font-weight:800;color:#22D3EE}
.hero-stat .label{font-size:.82rem;color:#93c5fd}

/* Layout */
.layout{display:grid;grid-template-columns:220px 1fr;gap:28px;padding:40px 0}
.sidebar{position:sticky;top:20px;align-self:start;background:#fff;border-radius:12px;padding:16px;box-shadow:0 1px 3px rgba(0,0,0,.06);max-height:calc(100vh - 40px);overflow-y:auto}
.sidebar h3{font-size:.8rem;color:#94a3b8;text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px;padding-bottom:10px;border-bottom:1px solid #f1f5f9}
.cat-item{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:8px;cursor:pointer;font-size:.88rem;color:#475569;transition:all .2s;margin-bottom:2px}
.cat-item:hover{background:#f1f5f9}
.cat-item.active{background:#eff6ff;color:#1E40AF;font-weight:600}
.cat-item .cnt{margin-left:auto;font-size:.72rem;background:#f1f5f9;color:#94a3b8;padding:2px 8px;border-radius:10px}
.cat-item.active .cnt{background:#dbeafe;color:#1E40AF}
.tag-filter{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.tag-chip{padding:4px 12px;border-radius:14px;font-size:.75rem;cursor:pointer;border:1px solid var(--tag-color,#e2e8f0);background:#fff;color:#64748b;transition:all .2s;user-select:none}
.tag-chip:hover{color:#fff;background:var(--tag-color,#94a3b8);border-color:var(--tag-color,#94a3b8)}
.tag-chip.active{color:#fff;background:var(--tag-color,#1E40AF);border-color:var(--tag-color,#1E40AF)}

/* Templates grid */
.templates{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.tpl-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 1px 3px rgba(0,0,0,.06);transition:transform .3s,box-shadow .3s;border:1px solid #f1f5f8;display:flex;flex-direction:column}
.tpl-card:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(15,23,42,.12)}
.tpl-thumb{height:150px;background:linear-gradient(135deg,#e0e7ff,#f0f9ff);overflow:hidden;position:relative}
.tpl-thumb img{width:100%;height:100%;object-fit:cover}
.tpl-badge{position:absolute;top:8px;right:8px;background:rgba(239,68,68,.95);color:#fff;padding:2px 10px;border-radius:12px;font-size:.68rem;font-weight:600}
.tpl-info{padding:12px 14px;flex:1;display:flex;flex-direction:column}
.tpl-name{font-size:.88rem;font-weight:700;margin-bottom:3px;color:#1e293b}
.tpl-meta{font-size:.7rem;color:#94a3b8;margin-bottom:8px}
.tpl-desc{font-size:.75rem;color:#64748b;margin-bottom:8px;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tpl-tags{display:flex;gap:4px;flex-wrap:wrap}
.tpl-tag{font-size:.65rem;padding:2px 7px;border-radius:4px;color:#fff;font-weight:500}
.empty{text-align:center;padding:60px 20px;color:#94a3b8;grid-column:1/-1}

/* Back link */
.back-main{position:fixed;top:16px;left:16px;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);padding:7px 14px;border-radius:20px;font-size:.82rem;font-weight:600;color:#1E40AF;box-shadow:0 2px 8px rgba(0,0,0,.1);z-index:50}

/* Footer */
.site-footer{background:#0f172a;color:#64748b;padding:24px;text-align:center;font-size:.82rem;margin-top:40px}
.site-footer a{color:#94a3b8}

/* Responsive */
@media(max-width:1024px){.templates{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){.layout{grid-template-columns:1fr}.sidebar{position:static}.templates{grid-template-columns:1fr}.hero h1{font-size:1.6rem}}