/* ===== 实用AI插件 · 频道内容样式（scoped #skc，配色与全站统一） ===== */
#skc{
  --card:#ffffff; --ink:#0a1a2e; --muted:#5d7798;
  --line:rgba(10,45,92,.10); --shadow:0 14px 38px rgba(10,45,92,.10);
  --accent:var(--blue,#1a6fd4);
}
#skc .wrap{max-width:1120px;margin:0 auto;padding:0 20px}
/* Hero */
#skc .sk-hero{background:linear-gradient(135deg,#0a2d5c,#1a6fd4);color:#fff;padding:54px 0 46px}
#skc .sk-hero h1{margin:0;font-size:34px;letter-spacing:1px}
#skc .sk-hero p{margin:10px 0 0;opacity:.92;font-size:15px}
#skc .sk-hero .stat{margin-top:18px;display:flex;gap:26px;flex-wrap:wrap;font-size:14px}
#skc .sk-hero .stat b{font-size:22px;display:block}
/* 分类筛选 */
#skc .catnav{position:sticky;top:68px;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);z-index:20;padding:12px 0}
#skc .catnav .wrap{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
#skc .chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 15px;
  font-size:13px;cursor:pointer;transition:.15s;color:var(--muted);white-space:nowrap}
#skc .chip:hover{border-color:rgba(26,111,212,.4);color:var(--accent)}
#skc .chip.active{background:var(--accent);color:#fff;border-color:var(--accent)}
/* 分类区块 */
#skc .catsec{margin:40px 0 8px}
#skc .catsec h2{font-size:22px;display:flex;align-items:center;gap:10px;margin:0 0 4px}
#skc .catsec .sub{color:var(--muted);font-size:14px;margin:0 0 18px}
#skc .dot{width:12px;height:12px;border-radius:50%;flex:none}
/* Grid + card */
#skc .sk-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
#skc .sk-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;
  box-shadow:var(--shadow);transition:.18s;display:flex;flex-direction:column;gap:12px}
#skc .sk-card:hover{transform:translateY(-3px);border-color:rgba(26,111,212,.35)}
#skc .sk-card .top{display:flex;align-items:center;gap:12px}
#skc .sk-card .ico{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:22px;flex:0 0 auto;overflow:hidden;background:rgba(26,111,212,.08)}
#skc .sk-card .ico img{width:100%;height:100%;object-fit:cover}
#skc .sk-card h3{margin:0;font-size:17px}
#skc .sk-card .tag{font-size:12px;color:var(--accent);background:rgba(26,111,212,.08);border-radius:6px;padding:2px 8px;width:fit-content}
#skc .sk-card .desc{color:var(--muted);font-size:13.5px;margin:0;flex:1;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
#skc .sk-card .more{font-size:13px;color:var(--accent);font-weight:600}
/* Detail */
#skc .detail{padding:30px 0 60px}
#skc .back{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:14px;margin:8px 0 18px}
#skc .back:hover{color:var(--accent)}
#skc .dhead{display:flex;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);
  border-radius:18px;padding:24px;box-shadow:var(--shadow)}
#skc .dhead .ico{width:64px;height:64px;border-radius:14px;flex:0 0 auto;overflow:hidden;background:rgba(26,111,212,.08);
  display:flex;align-items:center;justify-content:center;font-size:30px}
#skc .dhead .ico img{width:100%;height:100%;object-fit:cover}
#skc .dhead h1{margin:0;font-size:26px}
#skc .dhead .meta{color:var(--muted);font-size:13px;margin-top:6px}
#skc .dhead-main{flex:1 1 auto;min-width:0}
#skc .dhead .tag{font-size:12px;color:#fff;border-radius:6px;padding:3px 10px;width:fit-content;margin-top:8px;display:block}
/* download button at top-right of detail header */
#skc .dhead-act{flex:0 0 auto;margin-left:auto}
#skc .btn-dl{display:inline-flex;align-items:center;gap:10px;padding:11px 18px;border-radius:12px;
  background:var(--grad,linear-gradient(135deg,#1a6fd4,#3fa3e8));color:#fff;box-shadow:0 14px 38px rgba(26,111,212,.28);
  transition:transform .15s,box-shadow .15s}
#skc .btn-dl:hover{transform:translateY(-2px);box-shadow:0 18px 50px rgba(26,111,212,.34)}
#skc .btn-dl .dl-ico{font-size:17px;line-height:1}
#skc .btn-dl .dl-txt{display:flex;flex-direction:column;line-height:1.35}
#skc .btn-dl .dl-txt b{font-size:15px;font-weight:700}
#skc .btn-dl .dl-txt i{font-style:normal;font-size:11.5px;opacity:.92;white-space:nowrap}
/* download landing page */
#skc .dl-wrap{max-width:760px;margin:0 auto;padding:0 20px;position:relative;z-index:60}
#skc .dl-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px 32px;
  box-shadow:var(--shadow);text-align:center;margin-top:26px}
#skc .dl-card h1{margin:0 0 6px;font-size:25px}
#skc .dl-sub{color:var(--muted);font-size:14px;margin:0 0 22px}
#skc .dl-price{font-size:40px;font-weight:800;color:#ef4444;line-height:1;margin:6px 0 4px}
#skc .dl-price small{font-size:16px;font-weight:600}
#skc .dl-items{list-style:none;padding:0;margin:20px 0;display:grid;gap:10px;text-align:left}
#skc .dl-items li{padding:11px 14px;background:#f8fbff;border:1px solid var(--line);border-radius:10px;
  font-size:14px;display:flex;gap:9px;align-items:flex-start}
#skc .dl-items li:before{content:"✓";color:#22c55e;font-weight:700}
#skc .btn-pay{display:inline-block;margin-top:8px;padding:14px 40px;border-radius:12px;border:0;cursor:pointer;
  background:linear-gradient(135deg,#22c55e,#16a34a);color:#fff;font-size:16px;font-weight:700;
  box-shadow:0 6px 18px rgba(34,197,94,.3)}
#skc .btn-pay:hover{filter:brightness(1.05)}
#skc .dl-note{margin-top:16px;color:var(--muted);font-size:12.5px;line-height:1.8}
#skc .dl-ok{display:none;margin-top:18px;padding:16px;background:#f0fdf4;border:1px solid #bbf7d0;
  border-radius:12px;text-align:left}
#skc .dl-ok a{display:inline-block;margin-top:10px;padding:10px 22px;border-radius:10px;
  background:#16a34a;color:#fff;font-size:14px;font-weight:600}
#skc .dl-qr{margin-top:18px;padding:20px;background:#f8fafc;border:1px solid var(--line);
  border-radius:12px;text-align:center}
#skc .qr-title{font-size:15px;font-weight:700;margin:0 0 12px}
#skc .qr-img{display:inline-flex;padding:10px;background:#fff;border:1px solid var(--line);
  border-radius:10px}
#skc .qr-img img,#skc .qr-img canvas,#skc .qr-img svg{display:block}
#skc .qr-tip{color:var(--muted);font-size:12.5px;margin:12px 0 0}
#skc .mat-list{margin-top:16px;display:grid;gap:8px;text-align:left}
#skc .mat-title{font-weight:700;font-size:14px;margin:0 0 2px}
#skc .mat-list a{display:block;padding:9px 12px;background:#f8fbff;border:1px solid var(--line);border-radius:9px;font-size:13.5px;color:var(--accent);word-break:break-all}
#skc .dl-mask{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:90}
@media(max-width:640px){
  #skc .dhead{flex-wrap:wrap}
  #skc .dhead-act{margin-left:0;width:100%}
  #skc .btn-dl{width:100%;justify-content:center}
}
#skc .block{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 24px;margin-top:22px;
  box-shadow:var(--shadow)}
#skc .block h2{margin:0 0 14px;font-size:19px;display:flex;align-items:center;gap:9px}
#skc .block h2 .bar{width:5px;height:20px;border-radius:3px;background:var(--accent)}
#skc .feat{list-style:none;padding:0;margin:0;display:grid;gap:10px}
#skc .feat li{padding-left:26px;position:relative;font-size:14.5px}
#skc .feat li:before{content:"✦";position:absolute;left:0;color:var(--accent)}
/* detailed feature intro: overview + pain/highlight/selling */
#skc .fd-ov{margin:0 0 16px;color:var(--ink);font-size:15px;line-height:1.85}
#skc .fd-all{list-style:none;padding:0;margin:0;display:grid;gap:9px}
#skc .fd-all li{padding-left:24px;position:relative;font-size:14.5px;line-height:1.7}
#skc .fd-all li:before{content:"✦";position:absolute;left:2px;color:var(--accent);font-size:13px}
#skc .fd-sec{margin-top:14px;border:1px solid var(--line);border-radius:12px;padding:14px 16px;background:#f8fbff}
#skc .fd-sec.pain{background:#fff5f5;border-color:#fecaca}
#skc .fd-sec.hl{background:#f5f9ff;border-color:#bfdbfe}
#skc .fd-sec.sell{background:#f6fef6;border-color:#bbf7d0}
#skc .fd-sec h3{margin:0 0 10px;font-size:15px;display:flex;align-items:center;gap:7px}
#skc .fd-list{list-style:none;padding:0;margin:0;display:grid;gap:8px}
#skc .fd-list li{padding-left:22px;position:relative;font-size:14px;line-height:1.65}
#skc .fd-sec.pain .fd-list li:before{content:"•";position:absolute;left:4px;color:#ef4444;font-weight:700}
#skc .fd-sec.hl .fd-list li:before{content:"✦";position:absolute;left:2px;color:#3b82f6}
#skc .fd-sec.sell .fd-list li:before{content:"★";position:absolute;left:2px;color:#22c55e}
/* Stepper */
#skc .sk-step{display:flex;gap:14px;padding:12px 0;border-bottom:1px dashed var(--line)}
#skc .sk-step:last-child{border-bottom:none}
#skc .sk-step .num{flex:0 0 34px;height:34px;border-radius:50%;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
#skc .sk-step .st{font-weight:600;font-size:15px}
#skc .sk-step .sd{color:var(--muted);font-size:13.5px;margin-top:3px}
/* Prompt */
#skc .prompt-box{position:relative}
#skc .copy{position:absolute;top:12px;right:12px;border:1px solid var(--line);background:#fff;
  border-radius:8px;padding:6px 12px;font-size:12.5px;cursor:pointer;color:var(--accent);font-weight:600}
#skc .copy:hover{background:rgba(26,111,212,.08)}
#skc pre{background:#0a1a2e;color:#e2e8f0;border-radius:12px;padding:18px;overflow:auto;
  font-size:13px;line-height:1.6;white-space:pre-wrap;word-break:break-word;font-family:"SFMono-Regular",Consolas,Menlo,monospace}
#skc .notes{margin:0;padding-left:18px;color:#b45309;font-size:13.5px}
#skc .notes li{margin:4px 0}
#skc .hide{display:none!important}