:root{--bg:#06111f;--panel:rgba(9,25,45,.82);--panel2:rgba(12,35,63,.72);--line:rgba(88,232,255,.22);--text:#e7fbff;--muted:#8fb5c6;--brand:#37e7ff;--brand2:#9b5cff;--danger:#ff5470;--ok:#58ffb2;--shadow:0 20px 60px rgba(0,0,0,.35)}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;background:radial-gradient(circle at 20% -10%,rgba(55,231,255,.2),transparent 35%),radial-gradient(circle at 85% 5%,rgba(155,92,255,.18),transparent 35%),var(--bg);font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text)}
a{color:inherit;text-decoration:none}
.bg-grid{position:fixed;inset:0;pointer-events:none;background-image:linear-gradient(rgba(55,231,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(55,231,255,.06) 1px,transparent 1px);background-size:38px 38px;mask-image:linear-gradient(to bottom,black,transparent 80%);z-index:-1}
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:20px;padding:14px clamp(16px,4vw,54px);backdrop-filter:blur(20px);background:rgba(4,12,25,.78);border-bottom:1px solid var(--line)}
.brand{font-weight:800;letter-spacing:.06em;display:inline-flex;align-items:center;gap:10px;white-space:nowrap}
.brand-dot{width:12px;height:12px;border-radius:99px;background:var(--brand);box-shadow:0 0 22px var(--brand)}
.nav{display:flex;gap:8px;flex:1;overflow:auto;-webkit-overflow-scrolling:touch;scroll-behavior:smooth}
.nav::-webkit-scrollbar{display:none}
.nav a,.admin-sidebar a{padding:9px 12px;border:1px solid transparent;border-radius:999px;color:var(--muted);white-space:nowrap;font-size:14px}
.nav a:hover,.admin-sidebar a:hover{border-color:var(--line);color:var(--text);background:rgba(55,231,255,.07)}
.userbar{display:flex;align-items:center;gap:8px}
.points{padding:8px 11px;border-radius:999px;border:1px solid var(--line);background:rgba(55,231,255,.07);color:var(--brand)}
.container{width:min(1180px,calc(100% - 28px));margin:0 auto;padding:34px 0 60px}
.hero{display:grid;grid-template-columns:1.6fr .8fr;gap:24px;align-items:center;min-height:360px}
.hero h1,.page-head h1{font-size:clamp(38px,7vw,78px);line-height:1;margin:12px 0}
.hero p,.page-head p{color:var(--muted);font-size:18px;max-width:520px}
.eyebrow{color:var(--brand);font-size:11px;letter-spacing:.14em;text-transform:uppercase;font-weight:700}
.hero-actions{display:flex;gap:12px;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:999px;padding:11px 18px;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#03111d;font-weight:800;cursor:pointer;transition:opacity .2s}
.btn.ghost{background:rgba(255,255,255,.04);color:var(--text);border:1px solid var(--line);box-shadow:none}
.btn:hover{opacity:.9}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.small{padding:6px 12px;font-size:13px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:22px}
.status-panel{position:relative;overflow:hidden}
.status-panel .scan{position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(55,231,255,.08),transparent);animation:scan 4s linear infinite}
@keyframes scan{0%{transform:translateY(-100%)}100%{transform:translateY(100%)}}
.status-panel h3{margin:0 0 8px;font-size:16px}
.status-panel p{margin:4px 0;color:var(--muted);font-size:14px}
.section{margin-top:48px}
.section-title{display:flex;align-items:center;gap:14px;margin-bottom:18px}
.section-title h2{margin:0;font-size:22px}
.section-title span{color:var(--muted);font-size:14px}
.grid.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:18px;transition:.2s}
.card:hover{border-color:var(--brand);background:var(--panel2);transform:translateY(-4px)}
.card b{font-size:18px;margin-bottom:6px;display:block}
.card p{color:var(--muted);font-size:14px;margin:0}
.card em{color:var(--brand);font-size:12px;font-style:normal;margin-top:10px;display:block}
.article-list{display:flex;flex-direction:column;gap:14px}
.article-card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:18px;display:flex;justify-content:space-between;align-items:center;transition:.2s}
.article-card:hover{border-color:var(--brand);background:var(--panel2)}
.article-card h3{margin:0;font-size:18px}
.article-card p{color:var(--muted);font-size:14px;margin:6px 0 0}
.tag{display:inline-block;padding:4px 9px;border-radius:999px;background:rgba(55,231,255,.12);color:var(--brand);font-size:12px;margin-right:6px}
.tag.lock{background:rgba(255,215,0,.12);color:#ffd700}
.read-more{color:var(--brand);font-size:14px}
.page-head{margin-bottom:24px}
.page-head h1{font-size:clamp(32px,5vw,56px)}
.article-content{padding:28px}
.article-content img{max-width:100%;border-radius:12px}
.article-content pre{background:var(--bg);padding:16px;border-radius:12px;overflow:auto}
.article-content code{color:var(--brand)}
.article-meta{margin-top:24px;color:var(--muted);font-size:14px;display:flex;gap:20px}
.hidden-section{margin-top:24px;padding:20px;background:rgba(255,215,0,.08);border:1px solid rgba(255,215,0,.3);border-radius:18px}
.hidden-header{display:flex;align-items:center;gap:10px;color:#ffd700;font-size:16px}
.hidden-content{margin-top:16px;padding:16px;background:var(--bg);border-radius:12px}
.unlock-btn{margin-top:16px}
.comments-section{margin-top:24px}
.comments-section h3{margin:0 0 16px}
.comment-item{padding:14px;background:var(--bg);border-radius:12px;margin-bottom:10px}
.comment-author{color:var(--brand);font-weight:700;font-size:14px}
.comment-content{margin-top:8px}
.comment-date{color:var(--muted);font-size:12px;margin-top:8px}
.comments-section textarea{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:12px;color:var(--text);resize:vertical}
.comments-section textarea:focus{outline:none;border-color:var(--brand)}
.form-panel{max-width:420px;margin:0 auto}
.form-panel h2{text-align:center;margin-bottom:24px}
.form-group{margin-bottom:18px}
.form-group label{display:block;color:var(--brand);font-size:13px;margin-bottom:8px}
.form-group input{width:100%;padding:12px;background:var(--bg);border:1px solid var(--line);border-radius:12px;color:var(--text);font-size:16px}
.form-group input:focus{outline:none;border-color:var(--brand)}
.form-msg{text-align:center;margin-top:16px;font-size:14px}
.form-msg.success{color:var(--ok)}
.form-msg.error{color:var(--danger)}
.footer{text-align:center;padding:40px;color:var(--muted);font-size:14px}
.empty{color:var(--muted);text-align:center;padding:40px}

/* 工具类布局 */
.tool-layout{display:grid;grid-template-columns:200px 1fr;gap:24px;margin-top:24px}
.tool-menu{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:16px;height:fit-content}
.tool-menu-btn{width:100%;padding:12px 16px;margin-bottom:8px;border:none;border-radius:12px;background:transparent;color:var(--muted);font-weight:700;cursor:pointer;transition:all .2s}
.tool-menu-btn.active,.tool-menu-btn:hover{background:rgba(55,231,255,.1);color:var(--brand);border:1px solid var(--line)}
.tool-content{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:24px}
.tool-panel{display:none}
.tool-panel.active{display:block}

/* 后台管理 */
.admin-layout{display:grid;grid-template-columns:220px 1fr;gap:24px;margin-top:24px}
.admin-sidebar{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:16px;height:fit-content}
.admin-sidebar a{display:block;margin-bottom:8px}
.admin-sidebar a.active{background:rgba(55,231,255,.1);color:var(--brand);border-color:var(--line)}
.admin-content{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:24px}
.admin-table{width:100%;border-collapse:collapse}
.admin-table th,.admin-table td{padding:12px;border-bottom:1px solid var(--line)}
.admin-table th{color:var(--brand);font-size:13px;text-align:left}
.admin-table td{color:var(--text)}
.admin-table tr:hover td{background:rgba(55,231,255,.05)}
.admin-form{max-width:600px}
.admin-form .form-group{margin-bottom:16px}
.admin-actions{display:flex;gap:8px}

/* 移动端汉堡菜单按钮 */
.menu-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;border:none;background:transparent;z-index:30}
.menu-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:all .3s}
.menu-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.menu-toggle.active span:nth-child(2){opacity:0}
.menu-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* 移动端响应式 */
@media(max-width:900px){
  .hero{grid-template-columns:1fr}
  .tool-layout,.admin-layout{grid-template-columns:1fr}
  .tool-menu,.admin-sidebar{margin-bottom:16px}
  
  /* 显示汉堡菜单 */
  .menu-toggle{display:flex}
  
  /* 导航移动端样式 */
  .topbar{gap:12px;padding:12px 16px}
  .nav{
    position:fixed;
    top:60px;
    left:0;
    right:0;
    background:rgba(4,12,25,.98);
    backdrop-filter:blur(20px);
    flex-direction:column;
    padding:16px;
    gap:8px;
    transform:translateX(-100%);
    transition:transform .3s ease;
    border-bottom:1px solid var(--line);
    max-height:calc(100vh - 60px);
    overflow-y:auto;
    z-index:15;
  }
  .nav.open{transform:translateX(0)}
  .nav a{
    padding:14px 16px;
    border-radius:12px;
    border:1px solid var(--line);
    font-size:16px;
  }
  .nav a:hover{background:rgba(55,231,255,.1)}
  
  /* hero调整 */
  .hero{min-height:auto;padding:20px 0}
  .hero h1{font-size:clamp(28px,8vw,48px)}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%;justify-content:center}
  
  /* 卡片网格调整 */
  .grid.cards{grid-template-columns:1fr}
  
  /* 页面头部调整 */
  .page-head h1{font-size:clamp(24px,6vw,40px)}
  
  /* 表格横向滚动 */
  .admin-table{display:block;overflow-x:auto}
}

/* 小屏幕优化 */
@media(max-width:480px){
  .topbar{padding:10px 12px}
  .brand{font-size:14px}
  .userbar{gap:6px}
  .points{padding:6px 10px;font-size:13px}
  .btn{padding:10px 14px;font-size:14px}
  .btn.ghost{padding:10px 14px;font-size:14px}
}