:root{--p1:#00f0ff;--p2:#7b42f5;--bg:#050510;--text:#ccc}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Microsoft Yahei",sans-serif;color:#fff;background:var(--bg);overflow-x:hidden}
#particles{position:fixed;inset:0;z-index:1}
.nav{position:fixed;top:0;width:100%;padding:20px 50px;display:flex;justify-content:space-between;align-items:center;z-index:999;background:rgba(0,0,0,0.2);backdrop-filter:blur(10px)}
.logo{font-size:24px;font-weight:bold;background:linear-gradient(90deg,var(--p1),var(--p2));-webkit-background-clip:text;color:transparent;display:flex;align-items:center;gap:8px}
.nav-menu a{color:var(--text);text-decoration:none;margin-left:20px}
.nav-menu a:hover,.nav-menu a.active{color:var(--p1)}
.home{height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;position:relative;z-index:2}
.gradient-text{font-size:46px;background:linear-gradient(90deg,var(--p1),var(--p2));-webkit-background-clip:text;color:transparent;margin-bottom:20px}
.btn{padding:12px 35px;border:1px solid var(--p1);color:var(--p1);border-radius:50px;background:rgba(0,240,255,0.05);text-decoration:none;display:inline-block}
.btn:hover{background:linear-gradient(90deg,var(--p1),var(--p2));color:#000}
.section{padding:80px 20px;text-align:center;position:relative;z-index:2}
.dark{background:rgba(20,20,40,0.3)}
.title{font-size:32px;margin-bottom:40px;color:var(--p1)}
#guestbookForm input,#guestbookForm textarea{width:100%;max-width:500px;padding:12px;margin:8px auto;background:#111;border:1px solid #333;color:#fff;border-radius:8px}
#guestbookForm textarea{height:120px}
.feed{max-width:700px;margin:80px auto;padding:20px}
.post{background:#111;border:1px solid #333;border-radius:12px;padding:16px;margin-bottom:16px}
.post-media{max-width:100%;border-radius:8px;margin:8px 0}
.btn-sm{padding:6px 12px;font-size:14px}
textarea,input{width:100%;background:#222;border:1px solid #444;color:#fff;padding:10px;border-radius:8px;margin:8px 0}
.like,.comment,.share,.follow,.msg,.report{color:#ccc;margin:0 8px}
.like.liked{color:#f55}
.comment-item{border-top:1px solid #333;padding:8px;margin-top:8px}
.reply{font-size:12px;color:#888}
.admin-wrap{max-width:900px;margin:80px auto;padding:20px}
.tab{display:flex;gap:10px;margin-bottom:20px}
.tab-btn{padding:10px 20px;background:#222;border:1px solid #444;color:#fff;border-radius:8px}
.tab-btn.active{background:#00f0ff;color:#000}
.panel{display:none}
.panel.active{display:block}
table{width:100%;border-collapse:collapse;margin:20px 0}
th,td{border:1px solid #333;padding:10px;color:#ccc}