/* 知识/教程聚合页共享样式（深色科技风，与全站一致） */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#070b14;--panel:#0d1424;--line:#1e293b;--txt:#e2e8f0;--sub:#94a3b8;
  --cyan:#22d3ee;--blue:#3b82f6;--grad:linear-gradient(135deg,#22d3ee,#6366f1);
  --gold:#fbbf24;
}
body{font-family:"Microsoft YaHei",sans-serif;background:var(--bg);color:var(--txt);line-height:1.7;-webkit-text-size-adjust:100%}
.wrap{max-width:720px;margin:0 auto;padding:0 14px 70px}

/* 顶部条 */
.gtop{position:sticky;top:0;z-index:20;background:rgba(7,11,20,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);padding:12px 14px;display:flex;align-items:center;gap:10px}
.gtop a.back{display:inline-flex;align-items:center;color:var(--cyan);text-decoration:none;font-size:14px;white-space:nowrap}
.gtop a.back svg{width:18px;height:18px}
.gtop .gt-t{font-size:15px;font-weight:700;color:#fff;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 头部 */
.ghero{padding:26px 4px 18px}
.ghero h1{font-size:24px;color:#fff;margin-bottom:8px;letter-spacing:.5px}
.ghero p{font-size:14px;color:var(--sub)}
.ghero .badge{display:inline-block;margin-top:12px;background:rgba(34,211,238,.1);color:var(--cyan);
  border:1px solid rgba(34,211,238,.3);border-radius:999px;padding:5px 14px;font-size:12.5px}

/* 分区标题 */
.sec-t{display:flex;align-items:center;gap:8px;margin:26px 2px 12px;font-size:16px;font-weight:700;color:#fff}
.sec-t::before{content:"";width:4px;height:16px;border-radius:2px;background:var(--grad)}
.sec-t small{font-weight:400;color:var(--sub);font-size:12px;margin-left:2px}

/* 资源卡片（横向） */
.r-card{display:flex;align-items:center;gap:12px;width:100%;text-align:left;background:var(--panel);
  border:1px solid var(--line);border-radius:12px;padding:10px;margin-bottom:10px;color:var(--txt);
  cursor:pointer;text-decoration:none;transition:border-color .2s,transform .15s}
.r-card:active{transform:scale(.985)}
.r-card:hover{border-color:rgba(34,211,238,.45)}
.thumb{position:relative;flex:0 0 108px;width:108px;height:80px;border-radius:8px;overflow:hidden;background:#000}
.thumb img{width:100%;height:100%;object-fit:cover;display:block}
.thumb .play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:rgba(0,0,0,.28)}
.thumb .play svg{width:30px;height:30px;filter:drop-shadow(0 1px 4px rgba(0,0,0,.6))}
.thumb .kind{position:absolute;left:5px;bottom:5px;background:rgba(0,0,0,.65);color:#fff;
  font-size:10px;padding:1px 6px;border-radius:4px}
.r-body{flex:1;min-width:0}
.r-title{font-size:14.5px;font-weight:600;color:#fff;line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.r-meta{font-size:12px;color:var(--sub);margin-top:4px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.tag{display:inline-block;font-size:10.5px;padding:1px 7px;border-radius:4px}
.tag.local{background:rgba(59,130,246,.16);color:#7fb0ff}
.tag.pdf{background:rgba(251,191,36,.16);color:#fcd34d}
.tag.dy{background:#161616;color:#fff;border:1px solid #fe2c55}
.tag.warn{background:rgba(248,113,113,.16);color:#fca5a5}
.r-go{flex:0 0 auto;color:#475569;font-size:20px}
.r-card.pdfcard .thumb{background:linear-gradient(135deg,#7c2d12,#b45309)}

/* 图片网格 */
.img-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.i-card{position:relative;display:block;aspect-ratio:1/1;border-radius:8px;overflow:hidden;
  border:1px solid var(--line);cursor:pointer;background:var(--panel)}
.i-card img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.i-card:hover img{transform:scale(1.05)}
.i-card .cap{position:absolute;left:0;right:0;bottom:0;padding:14px 5px 4px;font-size:10.5px;color:#fff;
  background:linear-gradient(transparent,rgba(0,0,0,.8));line-height:1.25;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* 底部抖音引导条 */
.dy-strip{margin-top:28px;border:1px solid rgba(254,44,85,.35);border-radius:14px;padding:16px;
  background:linear-gradient(135deg,rgba(254,44,85,.08),rgba(37,244,238,.06));text-align:center}
.dy-strip b{color:#fff;font-size:15px;display:block;margin-bottom:4px}
.dy-strip span{font-size:12.5px;color:var(--sub)}
.dy-strip a{display:inline-block;margin-top:10px;background:#fe2c55;color:#fff;text-decoration:none;
  font-size:13.5px;font-weight:700;padding:9px 22px;border-radius:999px}

/* 返回首页 */
.home-link{display:block;text-align:center;margin-top:24px;color:var(--cyan);text-decoration:none;font-size:14px}

footer{margin-top:30px;padding-top:18px;border-top:1px solid var(--line);font-size:12.5px;color:#64748b;text-align:center}
footer a{color:#60a5fa;text-decoration:none}

/* 灯箱 */
.lb{position:fixed;inset:0;z-index:60;background:rgba(0,0,0,.9);display:none;
  align-items:center;justify-content:center;padding:18px}
.lb.show{display:flex}
.lb video{max-width:100%;max-height:100%;border-radius:6px}
.lb img{max-width:100%;max-height:100%;border-radius:6px}
.lb .lb-x{position:absolute;top:14px;right:16px;width:38px;height:38px;border-radius:50%;
  background:rgba(255,255,255,.14);color:#fff;border:none;font-size:22px;cursor:pointer;line-height:1}

/* 微信兜底弹窗（与首页同款） */
.wx-mask{position:fixed;inset:0;z-index:80;background:rgba(0,0,0,.62);display:none;
  align-items:center;justify-content:center;padding:30px}
.wx-mask.show{display:flex}
.wx-card{width:100%;max-width:340px;background:#fff;border-radius:16px;padding:22px 20px;text-align:center;color:#0f172a}
.wx-vrow{display:flex;align-items:center;gap:11px;text-align:left;background:#f8fafc;
  border:1px solid #e2e8f0;border-radius:10px;padding:9px;margin-bottom:16px}
.wx-vcover{flex:0 0 52px;width:52px;height:52px;border-radius:7px;object-fit:cover;background:#000}
.wx-vmeta{flex:1;min-width:0}
.wx-vtitle{font-size:13.5px;font-weight:700;color:#0f172a;line-height:1.35;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.wx-vfrom{font-size:11px;color:#fe2c55;margin-top:3px}
.wx-tip-top{font-size:16px;font-weight:700}
.wx-tip-top b{color:#fe2c55}
.wx-tip-main{font-size:14px;color:#334155;margin-top:10px;line-height:1.7}
.wx-div{display:flex;align-items:center;gap:10px;color:#94a3b8;font-size:12px;margin:16px 0}
.wx-div::before,.wx-div::after{content:"";flex:1;height:1px;background:#e2e8f0}
.wx-copy{width:100%;border:none;background:var(--grad);color:#fff;font-size:15px;font-weight:700;
  padding:12px;border-radius:10px;cursor:pointer}
.wx-cancel{margin-top:12px;font-size:13px;color:#94a3b8;cursor:pointer}
.wx-toast{display:none;margin-top:12px;font-size:13px;color:#16a34a}
.wx-toast.show{display:block}