:root{
  --bg:#07070d; --bg2:#0d0d18; --panel:rgba(20,20,34,.72); --panel-brd:rgba(120,120,200,.18);
  --txt:#e8e8f4; --muted:#9aa0c0; --accent:#7c5cff; --accent2:#27e0c8; --accent3:#ff6ad5;
  --ok:#27e0c8; --warn:#ffcf6a; --bad:#ff6a8a; --radius:16px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:radial-gradient(1200px 600px at 15% -10%,rgba(124,92,255,.18),transparent 60%),
             radial-gradient(900px 500px at 95% 0%,rgba(39,224,200,.12),transparent 55%),
             var(--bg);
  color:var(--txt); font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  line-height:1.7; min-height:100vh;
}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
/* 导航 */
header.nav{position:sticky;top:0;z-index:30;backdrop-filter:blur(14px);
  background:linear-gradient(180deg,rgba(7,7,13,.92),rgba(7,7,13,.55));
  border-bottom:1px solid var(--panel-brd)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{font-weight:800;font-size:19px;letter-spacing:.5px;
  background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.brand small{display:block;font-size:11px;color:var(--muted);font-weight:400;letter-spacing:2px}
.nav-links a{color:var(--muted);margin-left:18px;font-size:14px}
.nav-links a:hover{color:var(--txt);text-decoration:none}
/* 搜索 */
.search{display:flex;gap:10px;margin:26px 0 18px}
.search input{flex:1;padding:12px 16px;border-radius:12px;border:1px solid var(--panel-brd);
  background:var(--panel);color:var(--txt);font-size:15px;outline:none}
.search input:focus{border-color:var(--accent)}
/* 分类 chips */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}
.chip{padding:7px 15px;border-radius:999px;border:1px solid var(--panel-brd);background:var(--panel);
  color:var(--muted);cursor:pointer;font-size:13px;transition:.2s}
.chip:hover{color:var(--txt)}
.chip.active{background:linear-gradient(90deg,var(--accent),var(--accent3));color:#fff;border-color:transparent}
/* 卡片 */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px}
.card{position:relative;background:var(--panel);border:1px solid var(--panel-brd);border-radius:var(--radius);
  padding:20px;overflow:hidden;transition:.25s;cursor:pointer}
.card:hover{transform:translateY(-4px);border-color:rgba(124,92,255,.5);
  box-shadow:0 10px 40px rgba(124,92,255,.18)}
.card::after{content:"";position:absolute;inset:0;background:radial-gradient(400px 200px at var(--mx,50%) var(--my,50%),rgba(124,92,255,.14),transparent 60%);opacity:0;transition:.25s;pointer-events:none}
.card:hover::after{opacity:1}
.cat{display:inline-block;font-size:12px;color:var(--accent2);border:1px solid rgba(39,224,200,.3);
  padding:2px 10px;border-radius:999px;margin-bottom:10px}
.card h3{margin:0 0 8px;font-size:17px}
.card p{margin:0;color:var(--muted);font-size:14px}
.tags{margin-top:12px;display:flex;flex-wrap:wrap;gap:6px}
.tag{font-size:11px;color:var(--muted);background:rgba(255,255,255,.05);padding:2px 8px;border-radius:6px}
.meta{margin-top:12px;font-size:12px;color:var(--muted);display:flex;justify-content:space-between}
/* 详情 */
.detail-head{max-width:760px;margin:30px auto 10px}
.detail-head .cat{margin-bottom:12px}
.detail-head h1{font-size:28px;margin:0 0 10px}
.detail-body{max-width:760px;margin:0 auto;background:var(--panel);border:1px solid var(--panel-brd);
  border-radius:var(--radius);padding:28px;font-size:15.5px}
.detail-body h2,.detail-body h3{color:var(--txt)}
.detail-body code{background:rgba(255,255,255,.08);padding:2px 6px;border-radius:5px;font-size:13px}
.detail-body pre{background:#05050a;border:1px solid var(--panel-brd);padding:14px;border-radius:10px;overflow:auto}
.detail-body blockquote{margin:14px 0;padding:10px 16px;border-left:3px solid var(--accent);color:var(--muted);background:rgba(124,92,255,.06)}
.back{display:inline-block;margin:18px 0;color:var(--muted)}
/* 留言板 */
.comments{max-width:760px;margin:30px auto 60px;background:var(--panel);border:1px solid var(--panel-brd);
  border-radius:var(--radius);padding:24px}
.comments h2{margin:0 0 4px;font-size:19px}
.cm-hint{color:var(--muted);font-size:13px;margin-bottom:16px}
.cm-form textarea,.cm-form input{width:100%;background:#05050a;border:1px solid var(--panel-brd);border-radius:10px;
  color:var(--txt);padding:11px 14px;font-size:14px;outline:none;font-family:inherit}
.cm-form textarea{min-height:90px;resize:vertical;margin-top:8px}
.cm-form .row{display:flex;gap:10px;margin-top:10px;align-items:center}
.btn{padding:10px 20px;border:none;border-radius:10px;font-size:14px;cursor:pointer;
  background:linear-gradient(90deg,var(--accent),var(--accent3));color:#fff;font-weight:600}
.btn:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent;border:1px solid var(--panel-brd);color:var(--txt)}
.btn.sm{padding:5px 12px;font-size:12px}
.cm-list{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.cm-item{background:#05050a;border:1px solid var(--panel-brd);border-radius:12px;padding:14px}
.cm-item .top{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:6px}
.badge{font-size:11px;padding:2px 9px;border-radius:999px}
.badge.pending{background:rgba(255,207,106,.15);color:var(--warn)}
.badge.approved{background:rgba(39,224,200,.15);color:var(--ok)}
.badge.blocked{background:rgba(255,106,138,.15);color:var(--bad)}
.cm-item .content{font-size:14.5px;white-space:pre-wrap;word-break:break-word}
.empty{color:var(--muted);font-size:14px;text-align:center;padding:24px 0}
/* 管理后台 */
.admin{max-width:980px;margin:30px auto 60px}
.login-box{max-width:360px;margin:12vh auto}
.login-box input{width:100%;padding:12px 14px;margin-top:10px;background:#05050a;border:1px solid var(--panel-brd);
  border-radius:10px;color:var(--txt);font-size:15px;outline:none}
.tabs{display:flex;gap:10px;margin:18px 0}
.tabs .chip.active{background:linear-gradient(90deg,var(--accent),var(--accent2));color:#fff}
.panel{background:var(--panel);border:1px solid var(--panel-brd);border-radius:var(--radius);padding:22px;margin-bottom:20px}
.panel h3{margin:0 0 14px}
.field{margin-bottom:12px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:5px}
.field input,.field textarea,.field select{width:100%;background:#05050a;border:1px solid var(--panel-brd);border-radius:9px;
  color:var(--txt);padding:10px 12px;font-size:14px;outline:none;font-family:inherit}
.field textarea{min-height:120px;resize:vertical}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--panel-brd);vertical-align:top}
th{color:var(--muted);font-weight:600}
tr:hover td{background:rgba(255,255,255,.02)}
/* footer */
footer.foot{border-top:1px solid var(--panel-brd);padding:22px 0;color:var(--muted);font-size:12.5px;text-align:center;line-height:2}
.foot .beian a{color:var(--muted);margin:0 6px}
.foot .beian a:hover{color:var(--txt)}
/* toast */
.toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%);background:var(--panel);
  border:1px solid var(--panel-brd);padding:12px 22px;border-radius:12px;z-index:99;opacity:0;transition:.3s;pointer-events:none}
.toast.show{opacity:1}
@media(max-width:640px){.grid{grid-template-columns:1fr}.detail-body,.comments,.admin{padding:18px}}