:root{
  --primary:#2b6cb0; --primary-d:#1e4e8c; --accent:#ff6a00; --danger:#e23;
  --bg:#f4f6f9; --card:#fff; --text:#222; --muted:#888; --line:#e8ebf0;
  --radius:10px; --shadow:0 2px 12px rgba(0,0,0,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Microsoft YaHei","PingFang SC",-apple-system,Segoe UI,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;display:flex;flex-direction:column;min-height:100vh}
a{text-decoration:none;color:inherit}
img{max-width:100%}
.container{max-width:1180px;margin:0 auto;padding:0 16px}
/* 顶部导航 */
.topbar{background:var(--primary);color:#fff}
.topbar .container{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-size:22px;font-weight:700;color:#fff;display:flex;align-items:center;gap:8px}
.logo .dot{width:10px;height:10px;border-radius:50%;background:var(--accent);display:inline-block}
.nav{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.nav a{padding:8px 12px;border-radius:6px;color:#dbe7f5;font-size:14px;transition:.2s}
.nav a:hover,.nav a.active{background:rgba(255,255,255,.15);color:#fff}
.topbar .user{display:flex;gap:10px;align-items:center;font-size:14px}
.topbar .user a,.topbar .user .btn{color:#fff;border-color:rgba(255,255,255,.5)}
.topbar .user a:hover,.topbar .user .btn:hover{background:rgba(255,255,255,.15);color:#fff}
.btn{display:inline-block;padding:8px 18px;border-radius:6px;border:none;cursor:pointer;font-size:14px;transition:.2s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-d)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{filter:brightness(1.05)}
.btn-ghost{background:transparent;border:1px solid var(--primary);color:var(--primary)}
.btn-ghost:hover{background:var(--primary);color:#fff}
/* 搜索条 */
.searchbar{background:#fff;border-bottom:1px solid var(--line)}
.searchbar .container{display:flex;gap:10px;padding:14px 16px;align-items:center;flex-wrap:wrap}
.searchbar input{flex:1;min-width:200px;padding:10px 12px;border:1px solid var(--line);border-radius:6px;font-size:14px;outline:none}
.searchbar input:focus{border-color:var(--primary)}
/* 筛选区 */
.filter{background:#fff;margin:16px 0;padding:16px;border-radius:var(--radius);box-shadow:var(--shadow)}
.filter .row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:8px 0;border-bottom:1px dashed var(--line)}
.filter .row:last-child{border-bottom:none}
.filter .label{font-weight:600;color:var(--muted);min-width:64px;font-size:14px}
.filter .tag{padding:5px 12px;border-radius:20px;background:var(--bg);font-size:13px;cursor:pointer;transition:.2s;border:1px solid transparent}
.filter .tag:hover{background:#eaf1fb}
.filter .tag.active{background:var(--primary);color:#fff}
/* 资源列表 */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:16px 0}
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:0 8px 22px rgba(0,0,0,.1)}
.card .cover{height:150px;background:linear-gradient(135deg,#3a7bd5,#2b6cb0);display:flex;align-items:center;justify-content:center;color:#fff;font-size:26px;font-weight:700;overflow:hidden}
.card .cover img{width:100%;height:100%;object-fit:cover;display:block}
.detail-cover{max-width:100%;max-height:320px;border-radius:var(--radius);margin-bottom:16px;display:block}
.card .body{padding:14px;flex:1;display:flex;flex-direction:column}
.card h3{font-size:15px;line-height:1.4;margin-bottom:8px;height:42px;overflow:hidden}
.card .desc{color:var(--muted);font-size:13px;flex:1;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.card .meta{display:flex;justify-content:space-between;align-items:center;margin-top:10px;font-size:13px}
.badge-free{background:#e6f7ee;color:#1a9b5b;padding:2px 8px;border-radius:4px;font-size:12px}
.badge-price{background:#fff3e6;color:var(--accent);padding:2px 8px;border-radius:4px;font-size:12px}
.stat{color:var(--muted)}
/* 详情 */
.detail{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;margin:16px 0}
.detail h1{font-size:22px;margin-bottom:12px}
.detail .meta{color:var(--muted);font-size:14px;margin-bottom:16px;display:flex;gap:18px;flex-wrap:wrap}
.detail .desc{white-space:pre-wrap;line-height:1.9;font-size:15px}
.detail .actions{margin-top:20px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.download-link{font-size:14px;color:var(--text);word-break:break-all}
.download-link a{color:var(--primary);text-decoration:underline}
.inp-sm{width:100%;padding:6px 8px;border:1px solid var(--line);border-radius:6px;font-size:13px;box-sizing:border-box}
/* 分页 */
.pagination{display:flex;gap:8px;justify-content:center;margin:24px 0}
.pagination a,.pagination span{padding:8px 14px;border-radius:6px;background:#fff;box-shadow:var(--shadow);font-size:14px}
.pagination a.active{background:var(--primary);color:#fff}
/* 表单/认证 */
.auth-wrap{max-width:420px;margin:60px auto;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:32px}
.auth-wrap h2{text-align:center;margin-bottom:20px;font-size:22px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:14px;margin-bottom:6px;color:#444}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:6px;font-size:14px;outline:none}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary)}
.form-group textarea{resize:vertical;min-height:90px}
.auth-wrap .btn{width:100%}
.auth-tip{text-align:center;margin-top:14px;font-size:13px;color:var(--muted)}
.msg{text-align:center;font-size:14px;margin-bottom:14px;min-height:18px}
.msg.ok{color:#1a9b5b}.msg.err{color:#e23}
/* 会员中心 */
.dash{display:grid;grid-template-columns:220px 1fr;gap:20px;margin:16px 0}
.sidebar{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;height:fit-content}
.sidebar .u{text-align:center;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:12px}
.sidebar .u .avatar{width:64px;height:64px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:26px;margin:0 auto 8px}
.sidebar a{display:block;padding:10px 12px;border-radius:6px;margin-bottom:4px;font-size:14px;color:#555}
.sidebar a:hover,.sidebar a.active{background:#eaf1fb;color:var(--primary)}
.panel{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}
.panel h3{margin-bottom:16px;font-size:18px}
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th,.tbl td{padding:10px;border-bottom:1px solid var(--line);text-align:left}
.tbl th{background:var(--bg);color:#555;font-weight:600}
/* 页脚 */
.page-wrap{flex:1 0 auto}
.footer{flex-shrink:0;background:#fff;border-top:1px solid var(--line);padding:24px 0;color:var(--muted);font-size:13px;text-align:center}
.footer a{color:var(--primary);margin:0 6px}
.captcha-row{display:flex;gap:10px;align-items:center}
.captcha-row input{flex:1}
.captcha-row img{height:44px;border-radius:6px;cursor:pointer;border:1px solid var(--line);background:#fff}
.btn-sm{padding:5px 10px;font-size:12px}
.btn-danger{background:var(--danger);color:#fff}
.btn-danger:hover{filter:brightness(1.05)}
.admin-filter input,.admin-filter select{padding:9px 12px;border:1px solid var(--line);border-radius:6px;font-size:14px;outline:none}
.admin-filter input{min-width:180px}
.admin-tbl .priority-inp{width:70px;padding:6px;border:1px solid var(--line);border-radius:4px}
@media(max-width:900px){.grid{grid-template-columns:repeat(2,1fr)}.dash{grid-template-columns:1fr}}
@media(max-width:600px){.grid{grid-template-columns:1fr}.topbar .container{flex-wrap:wrap;height:auto;padding:10px 16px;gap:8px}.admin-tbl{display:block;overflow-x:auto}}

/* 支付弹窗 */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);display:none;align-items:center;justify-content:center;z-index:999}
.modal{background:#fff;border-radius:12px;width:440px;max-width:92vw;max-height:90vh;overflow:auto;box-shadow:0 12px 40px rgba(0,0,0,.25)}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--line)}
.modal-head h3{font-size:17px}
.modal-close{font-size:24px;cursor:pointer;color:var(--muted);line-height:1}
.modal-body{padding:18px 20px}
.pay-prod{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:15px;margin-bottom:10px}
.pay-tip{background:#fff7f0;border:1px solid #ffe2cc;color:#a35;padding:10px 12px;border-radius:8px;font-size:13px;margin-bottom:14px}
.pay-tip .wx{color:var(--accent);font-size:15px}
.pay-methods{display:flex;gap:18px}
.pay-methods .pm{display:flex;align-items:center;gap:6px;font-weight:500;cursor:pointer}
.pay-methods input{width:16px;height:16px}
/* 订单/回执 */
.order-card{border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin-bottom:14px;background:#fff}
.order-card h4{font-size:15px;margin-bottom:6px}
.order-meta{font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:12px;margin:6px 0}
.badge-paid{background:#16a34a;color:#fff;padding:2px 10px;border-radius:20px;font-size:12px}
.badge-wait{background:#f59e0b;color:#fff;padding:2px 10px;border-radius:20px;font-size:12px}
.receipt-box{background:#f8fafc;border:1px dashed var(--primary);border-radius:8px;padding:12px 14px;white-space:pre-wrap;font-size:13px;color:#234;margin-top:8px;line-height:1.7}
.admin-tbl td .mini{font-size:12px;padding:4px 8px}

/* ===== 加载状态 ===== */
/* 顶栏右上的 spinner（请求进行中显示） */
.topbar-loading{display:inline-flex;align-items:center;gap:6px;margin-left:10px;color:#fff;font-size:12px;opacity:0;transition:opacity .15s}
.topbar-loading.show{opacity:1}
.topbar-loading .sp{width:14px;height:14px;border:2px solid rgba(255,255,255,.55);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* 通用骨架屏 shimmer */
.skeleton{position:relative;overflow:hidden;background:#eef2f7;border-radius:8px}
.skeleton::after{content:"";position:absolute;inset:0;transform:translateX(-100%);background:linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent);animation:shimmer 1.2s infinite}
@keyframes shimmer{100%{transform:translateX(100%)}}
.skel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:18px}
.skel-grid .card-skel{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.skel-grid .ph{height:170px;margin:0}
.skel-grid .ln{display:block;height:14px;margin:12px;border-radius:4px}
.skel-grid .ln.short{width:40%}
.skel-grid .ln.btn{height:32px;margin-top:18px}
@media(max-width:900px){.skel-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.skel-grid{grid-template-columns:1fr}}

/* 详情/会员/订单 loading 区 */
.skel-block{padding:24px}
.skel-block .ln{display:block;height:16px;margin:10px 0;border-radius:4px}
.skel-block .ln.title{height:24px;width:60%}
.skel-block .ln.tag{height:14px;width:20%}
.skel-block .ln.text{height:14px}
.skel-block .ln.short{width:35%}
.skel-block .row{display:flex;gap:18px;flex-wrap:wrap}
.skel-block .row .ln{flex:1;min-width:140px}

.skel-tbl .row-skel{display:flex;gap:14px;padding:14px;border-bottom:1px solid var(--line);align-items:center}
.skel-tbl .row-skel .ln{display:block;height:14px;flex:1;border-radius:4px}
.skel-tbl .row-skel .ln.short{flex:0 0 80px}
.skel-tbl .row-skel .ln.icon{flex:0 0 40px;height:40px;border-radius:8px}

/* 按钮提交态 */
.btn.is-loading{position:relative;color:transparent!important;pointer-events:none}
.btn.is-loading::after{content:"";position:absolute;left:50%;top:50%;width:16px;height:16px;margin:-8px 0 0 -8px;border:2px solid rgba(255,255,255,.6);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}

/* 表格 loading 遮罩（可选，给管理后台整列表用） */
.loading-mask{display:flex;align-items:center;justify-content:center;min-height:120px;color:var(--muted);font-size:13px;gap:8px}
.loading-mask .sp{width:16px;height:16px;border:2px solid #d6dee8;border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}