:root{
  --bg:#070A12; --card:rgba(255,255,255,.04); --line:rgba(255,255,255,.09);
  --ink:#EAF1FF; --sub:#8A93A6; --cy:#37E0C8; --bl:#4F9DFF;
  --glass:rgba(255,255,255,.04);
  --hd-bg:rgba(7,10,18,.6); --mn-bg:rgba(7,10,18,.95);
  --inp-bg:rgba(255,255,255,.03); --inp-fg:#fff; --body-fg:#C7D0DE;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;position:relative;min-height:100vh}
body::before{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(700px 420px at 78% 12%,rgba(79,157,255,.18),transparent),radial-gradient(560px 360px at 12% 80%,rgba(55,224,200,.14),transparent)}
.wrap{max-width:1140px;margin:0 auto;padding:0 24px;position:relative;z-index:2}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}

/* 导航 */
header{position:sticky;top:0;z-index:50;background:var(--hd-bg);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px}
.logo{font-weight:700;font-size:18px;letter-spacing:.5px;display:flex;align-items:center}
.logo b{color:var(--cy)}
.logo-img{height:34px;width:auto;border-radius:8px;display:block;filter:drop-shadow(0 1px 2px rgba(0,0,0,.25))}
.nav ul{display:flex;gap:26px;list-style:none;font-size:14px;color:var(--sub)}
.nav ul a{transition:.2s}
.nav ul a:hover,.nav ul a.on{color:var(--cy)}
.nav .cta{border:1px solid var(--cy);color:var(--cy);padding:9px 18px;border-radius:999px;font-size:14px}
.nav .adm{color:var(--sub);font-size:13px;margin-left:18px}

/* 通用区块 */
section{padding:84px 0}
.sec{text-align:center;max-width:640px;margin:0 auto 50px}
.sec .k{font-size:12px;letter-spacing:3px;color:var(--cy);font-weight:600}
.sec h2{font-size:30px;margin:10px 0;font-weight:700}
.sec p{color:var(--sub)}
.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}

/* 卡片 */
.card{border:1px solid var(--line);background:var(--glass);backdrop-filter:blur(8px);border-radius:16px;padding:28px;transition:.25s;overflow:hidden}
.card:hover{transform:translateY(-5px);border-color:rgba(55,224,200,.5);box-shadow:0 18px 50px rgba(55,224,200,.12)}
.card .ic{width:46px;height:46px;border-radius:12px;background:rgba(55,224,200,.12);color:var(--cy);display:grid;place-items:center;font-size:22px;margin-bottom:12px}
.card .ic svg{width:24px;height:24px}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:var(--sub);font-size:14px}
.card .cat{display:inline-block;font-size:12px;color:var(--bl);border:1px solid rgba(79,157,255,.3);padding:2px 10px;border-radius:999px;margin-bottom:10px}
.card .more{display:inline-flex;align-items:center;gap:6px;color:var(--cy);font-size:14px;margin-top:14px}
.card .more svg{width:16px;height:16px}

/* 首页 hero */
.hero{padding:130px 0 110px;text-align:center}
.badge{display:inline-block;padding:6px 14px;border:1px solid var(--line);border-radius:999px;font-size:13px;color:var(--sub);margin-bottom:26px}
.badge b{color:var(--cy);font-weight:600}
.hero h1{font-size:52px;line-height:1.22;font-weight:700;letter-spacing:-.5px;white-space:pre-line}
.hero h1 .g{background:linear-gradient(90deg,var(--cy),var(--bl));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--sub);font-size:18px;max-width:640px;margin:22px auto 36px}
.btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn{padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;display:inline-block}
.btn.p{background:linear-gradient(90deg,var(--cy),var(--bl));color:#04121a}
.btn.s{border:1px solid var(--line);color:var(--ink)}

/* 关于 */
.about .g2{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.about .g2.no-img{grid-template-columns:1fr}
.about .g2.no-img .vis{display:none}
.about h2{font-size:28px;font-weight:700;margin-bottom:16px}
.about p{color:var(--sub);margin-bottom:14px}
.stats{display:flex;gap:30px;margin-top:24px;flex-wrap:wrap}
.stats div b{font-size:30px;font-weight:700;color:var(--cy);display:block}
.stats div span{color:var(--sub);font-size:13px}
.about .vis{height:300px;border-radius:16px;border:1px solid var(--line);background:linear-gradient(135deg,rgba(79,157,255,.12),rgba(55,224,200,.1));display:grid;place-items:center;color:rgba(55,224,200,.5);font-size:84px;overflow:hidden}
.about .vis img{width:100%;height:100%;object-fit:cover}

/* 产品/新闻列表 */
.cover{width:100%;height:160px;border-radius:10px 10px 0 0;object-fit:cover;background:linear-gradient(135deg,rgba(79,157,255,.3),rgba(55,224,200,.25));margin:-28px -28px 18px}
.card.pad{padding:28px}

/* 详情页 */
.detail{max-width:820px;margin:0 auto}
.detail .back{color:var(--sub);font-size:14px;display:inline-block;margin-bottom:18px}
.detail h1{font-size:34px;margin-bottom:12px}
.detail .meta{color:var(--sub);font-size:14px;margin-bottom:24px}
.detail .hero-img{width:100%;height:auto;max-height:480px;object-fit:contain;border-radius:16px;margin-bottom:28px;background:linear-gradient(135deg,rgba(79,157,255,.3),rgba(55,224,200,.25))}
.detail .body{color:var(--body-fg);font-size:16px;line-height:1.9}
.detail .body p{margin-bottom:14px}
.detail .ic-big{width:64px;height:64px;border-radius:16px;background:rgba(55,224,200,.12);color:var(--cy);display:grid;place-items:center;margin-bottom:18px}
.detail .ic-big svg{width:34px;height:34px}

/* 联系 */
.contact .g2{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.contact h2{font-size:28px;font-weight:700;margin-bottom:14px}
.contact .i{color:var(--sub);margin:12px 0}
.contact .i b{color:var(--ink)}
.contact form{background:var(--glass);border:1px solid var(--line);border-radius:16px;padding:26px;backdrop-filter:blur(8px)}
.contact input,.contact textarea{width:100%;padding:12px;margin-bottom:12px;border:1px solid var(--line);border-radius:10px;font-size:14px;font-family:inherit;background:var(--inp-bg);color:var(--inp-fg)}
.contact button{width:100%;padding:13px;border:none;border-radius:10px;background:linear-gradient(90deg,var(--cy),var(--bl));color:#04121a;font-weight:700;font-size:15px;cursor:pointer}

/* 新闻卡片 */
.post{border:1px solid var(--line);background:var(--glass);border-radius:16px;overflow:hidden;display:flex;flex-direction:column}
.post .thumb{height:150px;background:linear-gradient(135deg,rgba(79,157,255,.4),rgba(55,224,200,.35));overflow:hidden}
.post .thumb img{width:100%;height:100%;object-fit:cover}
.post .b{padding:18px}
.post .d{color:var(--cy);font-size:12px;font-family:ui-monospace,monospace}
.post h3{font-size:16px;margin:8px 0}
.post p{color:var(--sub);font-size:13px;flex:1}

footer{text-align:center;padding:28px;color:var(--sub);font-size:13px;border-top:1px solid var(--line);position:relative;z-index:2}
.breadcrumb{padding:90px 0 10px;text-align:center}
.breadcrumb h1{font-size:36px;font-weight:700}
.breadcrumb p{color:var(--sub);margin-top:8px}

/* ============ 后台 ============ */
.adm-body{background:#0B0F1A;color:#E8EEF7;font-family:-apple-system,"PingFang SC",sans-serif}
.adm-wrap{max-width:1100px;margin:0 auto;padding:24px}
.adm-login{max-width:380px;margin:12vh auto;background:#11192b;border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:32px}
.adm-login h2{font-size:22px;margin-bottom:18px}
.adm-login input,.adm-form input,.adm-form textarea,.adm-form select{width:100%;padding:11px;margin-bottom:12px;border:1px solid rgba(255,255,255,.12);border-radius:8px;background:#0c1322;color:#fff;font-size:14px;font-family:inherit}
.adm-login button,.adm-form button,.adm-btn{background:linear-gradient(90deg,#37E0C8,#4F9DFF);color:#04121a;font-weight:700;border:none;padding:11px 18px;border-radius:8px;cursor:pointer;font-size:14px}
.adm-bar{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px;flex-wrap:wrap;gap:12px}
.adm-bar h1{font-size:24px}
.adm-nav{display:flex;gap:8px;flex-wrap:wrap}
.adm-nav a{padding:8px 14px;border-radius:8px;background:#11192b;border:1px solid rgba(255,255,255,.08);color:#9fb0c9;font-size:14px}
.adm-nav a.on{background:rgba(55,224,200,.15);color:#37E0C8;border-color:rgba(55,224,200,.4)}
.adm-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.adm-card{background:#11192b;border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:18px}
.adm-card h3{font-size:17px;margin-bottom:6px}
.adm-card .m{color:#8A93A6;font-size:13px;margin-bottom:12px}
.adm-actions{display:flex;gap:8px;flex-wrap:wrap}
.adm-actions button,.adm-actions a{padding:7px 12px;font-size:13px;border-radius:7px;border:1px solid rgba(255,255,255,.12);background:#0c1322;color:#cfe;cursor:pointer}
.adm-actions .del{color:#ff8a8a;border-color:rgba(255,138,138,.3)}
.adm-actions .edit{color:#37E0C8;border-color:rgba(55,224,200,.3)}
.adm-table{width:100%;border-collapse:collapse;background:#11192b;border-radius:12px;overflow:hidden}
.adm-table th,.adm-table td{padding:12px 14px;text-align:left;border-bottom:1px solid rgba(255,255,255,.07);font-size:14px}
.adm-table th{color:#8A93A6;font-weight:600;background:#0e1626}
.adm-ok{background:rgba(55,224,200,.15);color:#37E0C8;border:1px solid rgba(55,224,200,.4);padding:10px 14px;border-radius:8px;margin-bottom:16px;font-size:14px}
.adm-form{background:#11192b;border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:22px;max-width:720px}
.adm-form label{display:block;font-size:13px;color:#9fb0c9;margin:10px 0 4px}
.adm-form .row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.adm-form textarea{min-height:120px;resize:vertical}
.adm-hint{font-size:12px;color:#6f7a8c;margin-top:4px}
.adm-modal{position:fixed;inset:0;background:rgba(0,0,0,.6);display:none;align-items:flex-start;justify-content:center;padding:40px 16px;overflow:auto;z-index:100}
.adm-modal.show{display:flex}
.adm-modal .box{background:#11192b;border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:24px;width:100%;max-width:720px}
.adm-modal h3{margin-bottom:14px}

/* 空状态 */
.empty-state{text-align:center;color:var(--sub);padding:50px 20px;border:1px dashed var(--line);border-radius:16px;background:rgba(255,255,255,.02)}

/* 表单提示 */
.form-ok{background:rgba(55,224,200,.12);border:1px solid rgba(55,224,200,.35);color:#37E0C8;padding:12px 14px;border-radius:10px;margin-bottom:12px}
.form-err{color:#ff8a8a;font-size:13px;display:block;margin:-8px 0 10px}

/* 移动端导航 */
.nav-toggle{display:none;background:transparent;border:none;cursor:pointer;flex-direction:column;gap:5px;padding:6px}
.nav-toggle span{display:block;width:22px;height:2.5px;background:var(--cy);border-radius:2px;transition:.2s}
.mobile-nav{display:none}

@media(max-width:900px){
  .nav ul{display:none}.nav-cta{display:none}
  .nav-toggle{display:flex}
  .hero h1{font-size:34px}.g3,.about .g2,.contact .g2{grid-template-columns:1fr}
  .stats{flex-wrap:wrap}.adm-form .row2{grid-template-columns:1fr}
  .mobile-nav{position:absolute;top:67px;left:0;right:0;background:var(--mn-bg);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);display:none;flex-direction:column;padding:16px 24px;gap:6px}
  .mobile-nav a{color:var(--sub);padding:10px 0;font-size:15px}
  .mobile-nav a.on{color:var(--cy)}
  .mobile-nav-cta{margin-top:10px}
  body.nav-open .mobile-nav{display:flex}
  body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  body.nav-open .nav-toggle span:nth-child(2){opacity:0}
  body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
}

/* Footer */
footer{padding:50px 0 0;border-top:1px solid var(--line);position:relative;z-index:2}
.ft-grid{display:grid;grid-template-columns:2fr 1fr 2fr;gap:40px;margin-bottom:40px}
.ft-logo{font-size:18px;font-weight:700;margin-bottom:10px}
.ft-logo b{color:var(--cy)}
.ft-grid p{color:var(--sub);font-size:14px;max-width:280px}
.ft-grid b{display:block;color:var(--ink);font-size:14px;margin-bottom:12px}
.ft-grid a,.ft-grid span{display:block;color:var(--sub);font-size:14px;margin:8px 0}
.ft-grid a:hover{color:var(--cy)}
.ft-copy{text-align:center;padding:22px 0;color:var(--sub);font-size:13px;border-top:1px solid var(--line)}
@media(max-width:900px){
  .ft-grid{grid-template-columns:1fr;gap:28px;margin-bottom:28px}
}

/* 后台小徽章 */
.adm-badge{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;background:#ff8a8a;color:#fff;border-radius:50%;font-size:11px;margin-left:4px}

/* 站点设置 - 核心数据行 */
.stat-row{position:relative;align-items:center}
.stat-row input{padding-right:36px}
.del-row{position:absolute;right:6px;top:50%;transform:translateY(-50%);width:26px;height:26px;border-radius:50%;border:1px solid rgba(255,138,138,.4);background:rgba(255,138,138,.1);color:#ff8a8a;display:grid;place-items:center;cursor:pointer;font-size:16px;line-height:1}