:root{
  --primary:#5b6cff;
  --primary-2:#8b5cf6;
  --grad:linear-gradient(135deg,#5b6cff 0%,#8b5cf6 100%);
  --bg:#f6f7fb;
  --card:#ffffff;
  --text:#1f2330;
  --text-2:#5a6172;
  --muted:#9aa1b2;
  --border:#eceef4;
  --shadow:0 2px 12px rgba(30,40,90,.06);
  --shadow-hover:0 8px 28px rgba(91,108,255,.16);
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;font-size:15px;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.container{max-width:1240px;margin:0 auto;padding:0 20px}

/* ---------- 顶部导航 ---------- */
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.topbar-inner{display:flex;align-items:center;gap:20px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;white-space:nowrap}
.logo .mark{width:34px;height:34px;border-radius:9px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:18px}
.logo .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.nav{display:flex;gap:6px;margin-left:8px}
.nav a{padding:8px 14px;border-radius:9px;color:var(--text-2);font-weight:600;transition:.15s}
.nav a:hover{background:#f0f1f7;color:var(--text)}
.nav a.active{background:#eef0ff;color:var(--primary)}
.search{margin-left:auto;flex:1;max-width:420px;position:relative}
.search input{width:100%;height:42px;border:1px solid var(--border);background:#fff;border-radius:22px;padding:0 44px 0 18px;font-size:14px;outline:none;transition:.15s}
.search input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(91,108,255,.12)}
.search .ico{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:16px}
.admin-link{color:var(--muted);font-size:13px;white-space:nowrap}
.admin-link:hover{color:var(--primary)}
.menu-toggle{display:none;font-size:24px;background:none;border:none;cursor:pointer;color:var(--text)}

/* ---------- Hero ---------- */
.hero{background:var(--grad);color:#fff;padding:46px 0 40px;text-align:center}
.hero h1{font-size:32px;font-weight:800;margin-bottom:10px}
.hero p{opacity:.92;font-size:16px}
.hero .hero-search{max-width:560px;margin:22px auto 0;position:relative}
.hero .hero-search input{width:100%;height:52px;border:none;border-radius:26px;padding:0 54px 0 22px;font-size:16px;outline:none;box-shadow:0 10px 30px rgba(0,0,0,.15)}
.hero .hero-search .ico{position:absolute;right:20px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:20px}

/* ---------- 主体布局 ---------- */
.layout{display:flex;gap:26px;padding:28px 0 60px;align-items:flex-start}
.sidebar{width:200px;flex-shrink:0;position:sticky;top:84px}
.sidebar h4{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin:0 0 10px 6px}
.cat-nav{display:flex;flex-direction:column;gap:2px}
.cat-nav a{display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:10px;color:var(--text-2);font-weight:600;font-size:14px;transition:.15s}
.cat-nav a:hover{background:#eef0ff;color:var(--primary)}
.cat-nav a .emo{font-size:16px}
.content{flex:1;min-width:0}

/* ---------- 分类分组 ---------- */
.cat-section{margin-bottom:34px;scroll-margin-top:80px}
.cat-title{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:800;margin-bottom:14px}
.cat-title .emo{font-size:22px}
.cat-title .count{font-size:13px;color:var(--muted);font-weight:600}

/* ---------- 工具卡片 ---------- */
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
.tool-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;display:flex;gap:13px;transition:.18s;position:relative;box-shadow:var(--shadow)}
.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#dfe3ff}
.tool-card .logo-box{width:46px;height:46px;border-radius:11px;flex-shrink:0;overflow:hidden;background:#f2f3f8;display:grid;place-items:center}
.tool-card .logo-box img{width:100%;height:100%;object-fit:cover}
.tool-card .info{min-width:0;flex:1}
.tool-card .name{font-weight:700;font-size:15px;display:flex;align-items:center;gap:6px}
.tool-card .name .fire{font-size:12px}
.tool-card .desc{color:var(--text-2);font-size:13px;margin-top:3px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.tool-card .tags{margin-top:8px;display:flex;flex-wrap:wrap;gap:5px}
.tool-card .tag{font-size:11px;color:var(--text-2);background:#f2f3f8;padding:2px 8px;border-radius:6px}
.badge-hot{position:absolute;top:12px;right:12px;font-size:10px;color:#fff;background:linear-gradient(135deg,#ff7a59,#ff4d6d);padding:2px 7px;border-radius:6px;font-weight:700}

/* ---------- 资讯/文章列表 ---------- */
.page-head{padding:30px 0 8px}
.page-head h1{font-size:26px;font-weight:800}
.page-head p{color:var(--text-2);margin-top:6px}
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 24px}
.filter-bar a{padding:7px 15px;border-radius:20px;background:#fff;border:1px solid var(--border);color:var(--text-2);font-weight:600;font-size:14px;transition:.15s}
.filter-bar a:hover{border-color:var(--primary);color:var(--primary)}
.filter-bar a.active{background:var(--grad);color:#fff;border-color:transparent}

.post-list{display:flex;flex-direction:column;gap:14px}
.post-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px 22px;transition:.18s;box-shadow:var(--shadow)}
.post-card:hover{box-shadow:var(--shadow-hover);border-color:#dfe3ff;transform:translateY(-2px)}
.post-card .p-cat{display:inline-block;font-size:12px;color:var(--primary);background:#eef0ff;padding:2px 10px;border-radius:6px;font-weight:600;margin-bottom:8px}
.post-card h3{font-size:18px;font-weight:700;margin-bottom:6px}
.post-card .p-sum{color:var(--text-2);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card .p-meta{display:flex;gap:14px;color:var(--muted);font-size:13px;margin-top:12px}

.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}

/* ---------- 详情页 ---------- */
.article{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:36px 40px;margin:26px 0;box-shadow:var(--shadow)}
.article h1{font-size:28px;font-weight:800;line-height:1.35;margin-bottom:14px}
.article .a-meta{display:flex;gap:16px;color:var(--muted);font-size:14px;padding-bottom:20px;margin-bottom:24px;border-bottom:1px solid var(--border)}
.article-body{font-size:16px;color:#2b3040;line-height:1.9}
.article-body h2{font-size:21px;font-weight:800;margin:26px 0 12px}
.article-body h3{font-size:18px;font-weight:700;margin:20px 0 10px}
.article-body p{margin:12px 0}
.article-body ul,.article-body ol{margin:12px 0 12px 24px}
.article-body li{margin:6px 0}
.article-body strong{color:var(--primary)}
.article-body code{background:#f2f3f8;padding:2px 6px;border-radius:5px;font-size:14px}
.back-link{display:inline-flex;align-items:center;gap:6px;color:var(--text-2);font-weight:600;margin-top:8px}
.back-link:hover{color:var(--primary)}
.source-box{margin-top:20px;padding:14px 18px;background:#f6f7fb;border-radius:10px;font-size:14px;color:var(--text-2)}
.source-box a{color:var(--primary);font-weight:600}

/* ---------- 空状态 ---------- */
.empty{text-align:center;padding:70px 20px;color:var(--muted)}
.empty .em{font-size:44px;margin-bottom:10px}

/* ---------- 页脚 ---------- */
.footer{background:#fff;border-top:1px solid var(--border);padding:30px 0;text-align:center;color:var(--muted);font-size:14px;margin-top:20px}
.footer .fnav{display:flex;gap:18px;justify-content:center;margin-bottom:10px}
.footer .fnav a:hover{color:var(--primary)}

/* ---------- 响应式 ---------- */
@media(max-width:860px){
  .sidebar{display:none}
  .nav{display:none}
  .search{max-width:none}
  .menu-toggle{display:block}
  .hero h1{font-size:25px}
  .tools-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .tools-grid{grid-template-columns:1fr}
  .topbar-inner{gap:10px}
  .logo{font-size:17px}
}