/* ============ 77代理 全局样式 ============ */
:root{
  --bg:#060a16;
  --bg2:#0a1120;
  --panel:#0d1630;
  --panel2:#111c3a;
  --line:rgba(120,160,255,.14);
  --line2:rgba(120,160,255,.25);
  --txt:#e8eefc;
  --txt2:#9fb0d0;
  --muted:#66779b;
  --primary:#2e7cf6;
  --primary2:#00d4ff;
  --accent:#7c5cff;
  --ok:#22c55e;
  --warn:#f5a623;
  --danger:#ff5170;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 20px 60px -20px rgba(0,0,0,.7);
  --grad:linear-gradient(135deg,#0b1a38 0%,#0a1120 55%,#101029 100%);
  --brand:linear-gradient(90deg,#2e7cf6,#00d4ff);
  --font:"Segoe UI",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  /* 主题可覆盖的背景光晕与网格色 */
  --glow1:rgba(46,124,246,.16);
  --glow2:rgba(0,212,255,.10);
  --glow3:rgba(124,92,255,.14);
  --gridc:rgba(120,160,255,.05);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);background:var(--grad);color:var(--txt);
  min-height:100vh;line-height:1.6;overflow-x:hidden;
  background-attachment:fixed;
}
/* 背景光晕 */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(600px 400px at 15% 12%,var(--glow1),transparent 60%),
    radial-gradient(700px 500px at 85% 20%,var(--glow2),transparent 60%),
    radial-gradient(900px 700px at 50% 110%,var(--glow3),transparent 60%);
}
a{color:var(--primary2);text-decoration:none}
a:hover{filter:brightness(1.15)}
img{max-width:100%;display:block}
button{font-family:var(--font);cursor:pointer}
input,select,textarea{font-family:var(--font)}
::selection{background:rgba(46,124,246,.4)}

/* ---------- 布局容器 ---------- */
.wrap{width:min(1180px,92%);margin-inline:auto}
.section{padding:72px 0;position:relative}
.section.alt{background:rgba(10,17,32,.55);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{text-align:center;max-width:760px;margin:0 auto 44px}
.sec-head .eyebrow{color:var(--primary2);letter-spacing:.16em;font-size:12px;text-transform:uppercase;font-weight:600}
.sec-head h2{font-size:clamp(28px,4vw,40px);font-weight:800;margin:10px 0 12px;letter-spacing:.5px}
.sec-head p{color:var(--txt2);font-size:16px}

/* ---------- 顶部导航 ---------- */
.navbar{position:sticky;top:0;z-index:100;background:rgba(6,10,22,.82);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--txt)}
.brand .logo{
  width:36px;height:36px;border-radius:9px;
  object-fit:contain;display:block;
  box-shadow:0 6px 20px -4px rgba(0,212,255,.6);
}
.nav-links{display:flex;gap:6px;align-items:center}
.nav-links a{color:var(--txt2);padding:8px 13px;border-radius:9px;font-size:14.5px;transition:.2s;font-weight:500}
.nav-links a:hover{color:var(--txt);background:rgba(255,255,255,.05)}
.nav-links a.active{color:#fff;background:linear-gradient(135deg,rgba(46,124,246,.25),rgba(0,212,255,.15));box-shadow:inset 0 0 0 1px var(--line2)}
.nav-cta{display:flex;gap:10px;align-items:center}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;padding:8px}
.hamburger span{width:24px;height:2px;background:var(--txt);border-radius:2px}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:11px;border:none;
  font-weight:600;font-size:14.5px;transition:all .2s;line-height:1;white-space:nowrap}
.btn.primary{background:linear-gradient(90deg,#2e7cf6,#00d4ff);color:#04101f;box-shadow:0 10px 26px -8px rgba(0,212,255,.55)}
.btn.primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px -8px rgba(0,212,255,.65)}
.btn.ghost{background:rgba(255,255,255,.05);color:var(--txt);box-shadow:inset 0 0 0 1px var(--line2)}
.btn.ghost:hover{background:rgba(255,255,255,.09)}
.btn.accent{background:linear-gradient(90deg,#7c5cff,#2e7cf6);color:#fff;box-shadow:0 10px 26px -10px rgba(124,92,255,.6)}
.btn.danger{background:rgba(255,81,112,.14);color:var(--danger);box-shadow:inset 0 0 0 1px rgba(255,81,112,.35)}
.btn.ok{background:rgba(34,197,94,.14);color:var(--ok);box-shadow:inset 0 0 0 1px rgba(34,197,94,.35)}
.btn.sm{padding:8px 14px;font-size:13px;border-radius:9px}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* ---------- Hero ---------- */
.hero{position:relative;padding:96px 0 90px;overflow:hidden}
.hero::after{content:"";position:absolute;inset:auto 0 -1px 0;height:120px;
  background:linear-gradient(180deg,transparent,rgba(6,10,22,.6))}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(32px,5vw,54px);font-weight:900;line-height:1.15;letter-spacing:.5px}
.hero h1 .grad{background:var(--brand);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p.lead{color:var(--txt2);font-size:17px;margin:20px 0 30px;max-width:520px}
.hero .stats{display:flex;gap:34px;margin-top:38px;flex-wrap:wrap}
.hero .stats .num{font-size:26px;font-weight:800}
.hero .stats .num em{font-style:normal;color:var(--primary2);font-weight:900}
.hero .stats .lbl{font-size:12.5px;color:var(--muted);letter-spacing:.05em}
.hero-visual{position:relative}
.hero-visual .globe{width:100%;border-radius:24px;box-shadow:var(--shadow);border:1px solid var(--line)}
.hero-badges{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.hero-badges .chip{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.05);
  border:1px solid var(--line);border-radius:999px;padding:8px 15px;font-size:13px;color:var(--txt2)}

/* ---------- 卡片 ---------- */
.card{background:linear-gradient(160deg,rgba(17,28,58,.85),rgba(10,16,32,.85));
  border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.25s}
.card:hover{transform:translateY(-5px);border-color:var(--line2);box-shadow:var(--shadow)}
.card .icon{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(135deg,rgba(46,124,246,.25),rgba(0,212,255,.18));border:1px solid var(--line2)}
.card .icon svg{width:26px;height:26px;stroke:var(--primary2)}
.card h3{font-size:18px;margin-bottom:10px;font-weight:700}
.card p{color:var(--txt2);font-size:14.5px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}

/* ---------- 价格 ---------- */
.plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;max-width:900px;margin-inline:auto}
.plan{position:relative;text-align:center;padding:30px 18px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(17,28,58,.9),rgba(10,16,32,.9));border:1px solid var(--line);transition:.25s}
.plan:hover{transform:translateY(-6px);border-color:var(--line2)}
.plan.hot{border-color:transparent;background:linear-gradient(var(--panel),var(--panel)) padding-box,var(--brand) border-box}
.plan.hot::before{content:"推荐";position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:var(--brand);color:#04101f;font-size:11px;font-weight:800;padding:4px 14px;border-radius:999px}
.plan .p-name{font-weight:700;font-size:16px}
.plan .p-tag{font-size:12px;color:var(--muted);margin:4px 0 12px}
.plan .p-price{font-size:30px;font-weight:900;margin-bottom:6px}
.plan .p-days{font-size:13px;color:var(--txt2);min-height:38px;margin-bottom:16px}
.plan .btn{width:100%;justify-content:center}

/* ---------- 节点 / 覆盖 ---------- */
.node-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:16px}
.node{display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:14px;background:rgba(255,255,255,.04);
  border:1px solid var(--line);transition:.2s}
.node:hover{border-color:var(--line2);background:rgba(255,255,255,.06)}
.node .flag{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;flex-shrink:0;
  background:linear-gradient(135deg,rgba(46,124,246,.3),rgba(0,212,255,.2));font-size:22px}
.node .nm{font-weight:600}
.node .meta{font-size:12.5px;color:var(--muted);margin-top:2px}
.node .rt{display:flex;gap:8px;margin-top:8px}
.node .rt span{font-size:11px;padding:2px 9px;border-radius:999px;border:1px solid var(--line)}
.node .rt .ok{color:var(--ok);border-color:rgba(34,197,94,.4)}
.cover{border-radius:20px;border:1px solid var(--line);box-shadow:var(--shadow);overflow:hidden}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:st}
.step{position:relative;background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:var(--radius);padding:28px 22px}
.step::before{counter-increment:st;content:counter(st);position:absolute;top:-16px;left:22px;
  width:34px;height:34px;border-radius:10px;background:var(--brand);color:#04101f;font-weight:900;
  display:grid;place-items:center;font-size:16px}
.step h4{font-size:16.5px;margin:6px 0 8px}
.step p{color:var(--txt2);font-size:13.5px}

/* ---------- 客服 ---------- */
.contact-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px}
.contact-box{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.contact-box h3{margin-bottom:16px;font-size:18px}
.qq-row{display:flex;gap:12px;flex-wrap:wrap}
.qq-pill{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:11px;
  background:linear-gradient(135deg,rgba(46,124,246,.2),rgba(124,92,255,.16));border:1px solid var(--line2);
  font-weight:600;font-size:14px;cursor:pointer;transition:.2s}
.qq-pill:hover{transform:translateY(-2px);filter:brightness(1.1)}
.wechat{display:flex;align-items:center;gap:20px}

/* ---------- 公告 ---------- */
.notice-head{margin-bottom:30px}
.notice-stack{display:flex;flex-direction:column;gap:16px;max-width:820px;margin:0 auto}
.notice{position:relative;display:flex;gap:18px;align-items:flex-start;overflow:hidden;
  background:linear-gradient(150deg,rgba(17,28,58,.9),rgba(10,16,32,.9));
  border:1px solid var(--line);border-radius:16px;padding:20px 22px;transition:.3s}
.notice::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--primary),var(--primary2))}
.notice::after{content:"";position:absolute;inset:0;border-radius:inherit;opacity:0;transition:.3s;pointer-events:none;
  background:radial-gradient(400px 120px at 0% 0%,rgba(0,212,255,.15),transparent 60%)}
.notice:hover{transform:translateX(4px);border-color:var(--line2)}
.notice:hover::after{opacity:1}
.notice.urgent{border-color:rgba(245,166,35,.4)}
.notice.urgent::before{background:linear-gradient(180deg,#ffb020,#ff6a3d)}
.notice-badge{flex-shrink:0;width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(46,124,246,.28),rgba(0,212,255,.2));border:1px solid var(--line2)}
.notice-badge svg{width:22px;height:22px;stroke:var(--primary2)}
.notice.urgent .notice-badge{background:linear-gradient(135deg,rgba(245,166,35,.3),rgba(255,106,61,.25));border-color:rgba(245,166,35,.5)}
.notice.urgent .notice-badge svg{stroke:var(--warn)}
.notice-body{flex:1;min-width:0}
.notice-meta{display:flex;align-items:center;gap:10px;margin-bottom:8px;flex-wrap:wrap}
.notice-date{font-size:12px;color:var(--muted)}
.notice-idx{font-size:11px;font-weight:800;letter-spacing:.1em;color:var(--primary2);opacity:.7;font-family:ui-monospace,Consolas,monospace;margin-left:auto}
.nm-flag{display:inline-flex;align-items:center;padding:2px 9px;border-radius:999px;font-size:11px;font-weight:700;
  background:linear-gradient(90deg,#ffb020,#ff6a3d);color:#1a1204}
.notice h4{font-size:16.5px;margin-bottom:6px;font-weight:700}
.notice p{color:var(--txt2);font-size:13.5px;line-height:1.7}

/* ---------- 认证页面 ---------- */
.auth-wrap{max-width:440px;margin:40px auto}
.card.auth{position:relative;overflow:hidden}
.auth-tabs{display:flex;gap:6px;background:rgba(255,255,255,.04);border-radius:12px;padding:5px;margin-bottom:22px}
.auth-tabs button{flex:1;padding:10px;border:none;border-radius:9px;background:transparent;color:var(--txt2);font-weight:600;font-size:14px;transition:.2s}
.auth-tabs button.active{background:linear-gradient(90deg,#2e7cf6,#00d4ff);color:#04101f}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:var(--txt2);margin-bottom:7px;font-weight:500}
.field input,.field select,.field textarea{width:100%;padding:12px 14px;border-radius:11px;border:1px solid var(--line2);
  background:rgba(255,255,255,.04);color:var(--txt);font-size:14.5px;transition:.2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary2);box-shadow:0 0 0 3px rgba(0,212,255,.15);background:rgba(255,255,255,.06)}
.field .hint{font-size:12px;color:var(--muted);margin-top:6px}
.captcha-row{display:flex;gap:10px;align-items:center}
.captcha-row input{flex:1}
.captcha-row .cap{width:110px;height:46px;border-radius:11px;border:1px solid var(--line2);cursor:pointer;overflow:hidden;display:grid;place-items:center;background:#0c1430}
.captcha-row .cap svg{width:100%;height:100%}
.form-tip{font-size:13px;color:var(--txt2);margin-top:14px;text-align:center}

/* ---------- 用户中心 ---------- */
.dash{display:grid;grid-template-columns:260px 1fr;gap:24px;margin-top:8px}
.dash-nav{display:flex;flex-direction:column;gap:6px;background:rgba(255,255,255,.03);border:1px solid var(--line);
  border-radius:var(--radius);padding:14px;position:sticky;top:86px;height:fit-content}
.dash-nav a{display:flex;align-items:center;gap:11px;padding:12px 14px;border-radius:11px;color:var(--txt2);font-size:14.5px;transition:.2s}
.dash-nav a:hover{background:rgba(255,255,255,.05);color:var(--txt)}
.dash-nav a.active{background:linear-gradient(135deg,rgba(46,124,246,.25),rgba(0,212,255,.15));color:#fff}
.dash-nav a svg{width:19px;height:19px}
.dash-body{min-width:0}
.profile-hero{display:flex;align-items:center;gap:20px;background:linear-gradient(135deg,rgba(46,124,246,.18),rgba(0,212,255,.1));
  border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:20px}
.profile-hero .avatar{width:60px;height:60px;border-radius:16px;background:var(--brand);display:grid;place-items:center;
  font-size:26px;font-weight:900;color:#04101f}
.profile-hero h3{font-size:20px}
.profile-hero .sub{color:var(--txt2);font-size:13.5px;margin-top:2px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:20px}
.stat{border:1px solid var(--line);border-radius:14px;padding:18px;background:rgba(255,255,255,.03)}
.stat .k{font-size:13px;color:var(--muted)}
.stat .v{font-size:24px;font-weight:800;margin-top:4px}
.stat .v.ok{color:var(--ok)}
.stat .v.warn{color:var(--warn)}
.stat .v.danger{color:var(--danger)}
.bar{height:9px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:10px}
.bar i{display:block;height:100%;background:var(--brand);border-radius:999px;transition:width .5s}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px}
table{width:100%;border-collapse:collapse;font-size:14px;min-width:640px}
th,td{padding:13px 16px;text-align:left;white-space:nowrap}
th{background:rgba(255,255,255,.04);color:var(--txt2);font-weight:600;font-size:12.5px;letter-spacing:.03em}
td{border-top:1px solid var(--line);color:var(--txt)}
tr:hover td{background:rgba(255,255,255,.02)}
.pill{display:inline-block;padding:3px 11px;border-radius:999px;font-size:12px;font-weight:600}
.pill.ok{color:var(--ok);background:rgba(34,197,94,.14)}
.pill.warn{color:var(--warn);background:rgba(245,166,35,.14)}
.pill.danger{color:var(--danger);background:rgba(255,81,112,.14)}
.pill.info{color:var(--primary2);background:rgba(0,212,255,.14)}

/* ---------- 页脚 ---------- */
.footer{border-top:1px solid var(--line);background:rgba(6,10,22,.7);padding:52px 0 30px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;margin-bottom:34px}
.footer h4{font-size:15px;margin-bottom:14px}
.footer ul{list-style:none}
.footer ul li{margin-bottom:9px}
.footer ul a{color:var(--txt2);font-size:13.5px}
.footer ul a:hover{color:var(--txt)}
.footer-bottom{border-top:1px solid var(--line);padding-top:22px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:13px}

/* ---------- 提示/悬浮 ---------- */
.toast-wrap{position:fixed;top:20px;right:20px;z-index:200;display:flex;flex-direction:column;gap:10px}
.toast{display:flex;align-items:center;gap:10px;background:#0d1630;border:1px solid var(--line2);border-radius:12px;
  padding:13px 18px;box-shadow:var(--shadow);min-width:240px;animation:slideIn .3s ease}
.toast.ok{border-color:rgba(34,197,94,.5)}
.toast.err{border-color:rgba(255,81,112,.5)}
.toast.warn{border-color:rgba(245,166,35,.5)}
.toast .dot{width:9px;height:9px;border-radius:50%;flex-shrink:0}
.toast.ok .dot{background:var(--ok)}.toast.err .dot{background:var(--danger)}.toast.warn .dot{background:var(--warn)}
@keyframes slideIn{from{transform:translateX(30px);opacity:0}to{transform:translateX(0);opacity:1}}
.modal-mask{position:fixed;inset:0;z-index:150;background:rgba(3,7,16,.7);backdrop-filter:blur(6px);display:none;align-items:center;justify-content:center;padding:20px}
.modal-mask.show{display:flex}
.modal{width:min(460px,100%);max-height:90vh;overflow:auto;background:#0d1630;border:1px solid var(--line2);border-radius:18px;padding:28px;box-shadow:var(--shadow)}
.modal .m-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.modal .m-head h3{font-size:19px}
.modal .close{background:none;border:none;color:var(--txt2);font-size:24px;line-height:1}
.spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,.2);border-top-color:var(--primary2);border-radius:50%;animation:spin .7s linear infinite;display:inline-block;vertical-align:middle}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 文章页 ---------- */
.article{max-width:820px;margin:auto}
.article h1{font-size:clamp(26px,4vw,36px);margin-bottom:14px}
.article .lede{color:var(--txt2);font-size:17px;margin-bottom:26px}
.article h2{font-size:22px;margin:30px 0 14px;color:var(--primary2)}
.article h3{font-size:18px;margin:22px 0 10px}
.article p{font-size:15px;color:#c7d4ec;margin-bottom:14px}
.article ul{margin:0 0 16px 22px;color:#c7d4ec;font-size:15px}
.article li{margin-bottom:8px}
.article .prose-block{background:rgba(255,255,255,.03);border:1px solid var(--line);border-left:3px solid var(--primary2);border-radius:10px;padding:18px;margin:20px 0}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--txt2)}

/* ---------- 下载 ---------- */
.dl-card{display:flex;align-items:center;gap:20px;background:linear-gradient(135deg,rgba(17,28,58,.9),rgba(10,16,32,.9));
  border:1px solid var(--line);border-radius:var(--radius);padding:26px;margin-bottom:20px}
.dl-card .os{width:66px;height:66px;border-radius:16px;display:grid;place-items:center;flex-shrink:0;background:var(--brand);color:#04101f}
.dl-card .os svg{width:34px;height:34px}
.dl-card .info{flex:1}
.dl-card .info h3{font-size:18px}
.dl-card .info p{color:var(--txt2);font-size:13.5px;margin-top:4px}
.sys-req{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-top:6px}

/* ---------- 响应式 ---------- */
@media(max-width:1024px){
  .grid-4{grid-template-columns:1fr 1fr}
  .plans{grid-template-columns:repeat(2,1fr)}
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{order:-1}
  .dash{grid-template-columns:1fr}
  .dash-nav{position:static;flex-direction:row;flex-wrap:wrap;overflow:auto}
  .contact-grid{grid-template-columns:1fr}
}
@media(max-width:820px){
  .nav-links{display:none}
  .hamburger{display:flex}
  .grid-3,.steps{grid-template-columns:1fr 1fr}
  .grid-2{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .grid-3,.grid-4,.steps,.plans{grid-template-columns:1fr}
  .section{padding:52px 0}
  .footer-grid{grid-template-columns:1fr 1fr}
}
.nav-links.mobile{display:flex;flex-direction:column;position:absolute;top:66px;left:0;right:0;background:rgba(6,10,22,.97);
  padding:14px;gap:4px;border-bottom:1px solid var(--line)}

/* ============ 科技感增强 ============ */
/* 全站赛博网格覆盖（仅顶部可见） */
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(var(--gridc) 1px,transparent 1px),
    linear-gradient(90deg,var(--gridc) 1px,transparent 1px);
  background-size:58px 58px;
  -webkit-mask-image:radial-gradient(760px 560px at 50% -2%,#000,transparent 78%);
  mask-image:radial-gradient(760px 560px at 50% -2%,#000,transparent 78%);
}
/* 浮动光斑粒子背景 */
body::before{
  animation:aurora 18s ease-in-out infinite alternate;
}
@keyframes aurora{
  0%{transform:translate(0,0) scale(1)}
  50%{transform:translate(120px,-60px) scale(1.15)}
  100%{transform:translate(-90px,40px) scale(.95)}
}
/* 渐变流光标题 */
.hero h1 .grad{
  background-size:200% auto;
  animation:gradFlow 6s ease-in-out infinite;
}
@keyframes gradFlow{0%,100%{background-position:0% center}50%{background-position:100% center}}
/* 主视觉缓慢浮动 */
@keyframes floaty{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-10px) rotate(-.6deg)}}
.hero-visual .globe{animation:floaty 8s ease-in-out infinite}
/* 导航底部发光分割线 */
.navbar{border-bottom:1px solid rgba(0,212,255,.18)}
.navbar::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--primary2),transparent);opacity:.5}
/* 主按钮流光 + 霓虹辉光 */
.btn.primary,.btn.accent{background-size:220% auto;animation:shine 8s linear infinite;
  box-shadow:0 10px 26px -8px rgba(0,212,255,.55),0 0 22px rgba(0,212,255,.25)}
@keyframes shine{0%{background-position:0% 0}50%{background-position:100% 0}100%{background-position:0% 0}}
/* 芯片悬停上浮 */
.hero-badges .chip,.qq-pill,.node,.plan{transition:transform .25s,box-shadow .25s}
.hero-badges .chip:hover,.qq-pill:hover{transform:translateY(-2px)}
/* 卡片光边 */
.card::before{content:"";position:absolute;inset:0;border-radius:inherit;opacity:0;
  background:radial-gradient(600px 200px at 50% -20%,rgba(0,212,255,.18),transparent 40%);
  transition:opacity .25s;pointer-events:none}
.card{position:relative;overflow:hidden}
.card:hover::before{opacity:1}
/* Toast 更醒目 */
.toast{border-left:3px solid var(--primary2)}
/* 框架 / HUD 装饰线 */
.section::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);width:min(1180px,92%);
  height:1px;background:linear-gradient(90deg,transparent,rgba(0,212,255,.25),transparent);pointer-events:none}
/* 数控字体角标：用于 HUD 风小标签 */
.hud-tag{font-family:ui-monospace,'SF Mono',Consolas,'Courier New',monospace;letter-spacing:.12em;
  font-size:11px;color:var(--primary2);text-transform:uppercase;opacity:.85}
/* 文章页：标题分隔线 + 小标题风格 */
.article h2{margin:34px 0 14px;
  background:linear-gradient(90deg,var(--primary2),#7c5cff);-webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent}
.article h1{border-bottom:1px solid rgba(0,212,255,.2);padding-bottom:16px}
.article p b{color:var(--primary2);font-weight:700}

/* ================================================================
   v2 · 科技感视觉系统（数字地球 / 全球网络 / HUD）
   ================================================================ */
/* 数字地球 */
.globe-svg{width:100%;height:auto;display:block}
.gg-graticule{opacity:.9}
.gg-dot{fill:#7fe9ff;filter:drop-shadow(0 0 5px rgba(0,212,255,.9))}
.gg-pulse{fill:none;stroke:#00d4ff;stroke-width:1.2;opacity:.75;
  animation:ggPulse 2.8s ease-out infinite}
.gg-pulse:nth-child(2){animation-delay:1.4s}
@keyframes ggPulse{
  0%{transform:scale(.5);opacity:.85}
  75%{transform:scale(3.2);opacity:0}
  100%{transform:scale(3.2);opacity:0}
}
.gg-node{transform-origin:center}
.gg-node:hover .gg-dot{fill:#fff}
.gg-label{font-size:10.5px;fill:#bcd8ff;letter-spacing:.06em;font-weight:600}
.gg-arc{stroke-dasharray:340 340;stroke-dashoffset:0;animation:ggFlow 5.5s linear infinite}
.gg-arc2{animation-duration:7.5s;animation-direction:reverse}
@keyframes ggFlow{to{stroke-dashoffset:-680}}
.gg-scanwrap{transform-origin:260px 260px;animation:ggSpin 10s linear infinite}
.gg-scan{stroke:rgba(0,212,255,.5);stroke-width:1;opacity:.35}
@keyframes ggSpin{to{transform:rotate(360deg)}}
.gg-ring{stroke:rgba(0,212,255,.3);stroke-width:1;stroke-dasharray:3 10;
  transform-origin:260px 260px;animation:ggSpin 26s linear infinite}
.gg-ring2{stroke:rgba(124,92,255,.28);animation-duration:40s;animation-direction:reverse}

/* Hero 地球舞台 */
.globe-stage{position:relative;border-radius:26px;overflow:hidden;padding:10px;
  background:radial-gradient(120% 100% at 50% 30%,#0a1a33 0%,#060d1f 70%);
  border:1px solid rgba(0,212,255,.22);box-shadow:0 30px 80px -30px rgba(0,212,255,.35),inset 0 0 60px rgba(0,212,255,.06)}
.globe-stage::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(160deg,rgba(0,212,255,.08),transparent 40%,transparent 60%,rgba(124,92,255,.08))}
.globe-glow{position:absolute;inset:6%;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(0,212,255,.16),transparent 62%);
  animation:ggPulseSlow 6s ease-in-out infinite}
@keyframes ggPulseSlow{0%,100%{opacity:.6;transform:scale(1)}50%{opacity:1;transform:scale(1.06)}}
.globe-chip{position:absolute;left:50%;transform:translateX(-50%);white-space:nowrap;
  font-size:11.5px;color:#bfe6ff;background:rgba(8,20,40,.82);border:1px solid rgba(0,212,255,.35);
  border-radius:999px;padding:6px 13px;backdrop-filter:blur(6px);letter-spacing:.02em;box-shadow:0 6px 18px -6px rgba(0,212,255,.4)}
.chip-cn{top:12px}
.chip-eu{top:50%}
.chip-us{bottom:12px}

/* 覆盖页大地球舞台 */
.cov-stage{position:relative;max-width:640px;margin:0 auto 20px;border-radius:30px;overflow:hidden;
  background:radial-gradient(110% 100% at 50% 25%,#0b1c38 0%,#050b1c 75%);
  border:1px solid rgba(0,212,255,.25);box-shadow:0 40px 90px -40px rgba(0,212,255,.45)}
.cov-stage::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(160deg,rgba(0,212,255,.1),transparent 42%,transparent 58%,rgba(124,92,255,.12))}
.cov-stage .globe-svg{padding:26px 10px 6px}
.cov-glow{position:absolute;inset:8%;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(0,212,255,.18),transparent 62%);
  animation:ggPulseSlow 7s ease-in-out infinite}
.cov-stage .gg-label{font-size:12px}
.cov-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;padding:18px 22px 24px}
.cov-stat{text-align:center;background:rgba(255,255,255,.03);border:1px solid rgba(120,160,255,.14);
  border-radius:14px;padding:14px 8px}
.cov-stat .num{font-size:22px;font-weight:900}
.cov-stat .num em{font-style:normal;color:var(--primary2)}
.cov-stat .lbl{font-size:11.5px;color:var(--muted);margin-top:3px}

/* 首页网络面板 */
.net-panel{position:relative;border-radius:20px;overflow:hidden;
  background:linear-gradient(160deg,rgba(13,24,48,.92),rgba(8,14,28,.92));
  border:1px solid var(--line);box-shadow:var(--shadow);min-height:320px;display:flex;flex-direction:column}
.net-panel::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(500px 200px at 50% 0%,rgba(0,212,255,.14),transparent 60%)}
.mini-net{width:100%;flex:1;padding:18px 10px 6px}
.mn-lines{opacity:.9}
.mn-nodes .gg-pulse{animation-duration:3.6s}
.net-hud{font-family:ui-monospace,Consolas,monospace;font-size:11px;letter-spacing:.22em;color:rgba(0,212,255,.8);
  padding:14px 18px 0;text-transform:uppercase}
.net-hud::before{content:"●";color:var(--ok);margin-right:8px;animation:blinkDot 1.6s infinite}
@keyframes blinkDot{0%,100%{opacity:1}50%{opacity:.25}}
.net-foot{font-size:12px;color:var(--muted);padding:8px 18px 16px;text-align:center;letter-spacing:.04em}

/* 内联二维码 */
.qr-svg{width:86%;height:86%}
.qr-f{fill:#0c1430}
.qr-fc{fill:#5fe4ff}
.qr-c{fill:#9fe9ff;opacity:.95}

/* 区域卡片 */
.region-card{text-align:center;padding:26px 18px}
.region-flag{display:inline-block;font-size:34px;margin-bottom:12px;filter:drop-shadow(0 4px 10px rgba(0,212,255,.35))}

/* ---------- 法律文档（服务条款 / 隐私政策） ---------- */
.legal{padding-top:8px}
.legal-head{padding:6px 0 22px;border-bottom:1px solid rgba(0,212,255,.16);margin-bottom:30px}
.legal-head h1{margin-bottom:6px;border-bottom:none;padding-bottom:0}
.doc-meta{color:var(--muted);font-size:13px;margin:8px 0 4px;letter-spacing:.04em}
.legal .lede{color:var(--txt2);font-size:14.5px;line-height:1.8;margin-top:8px}
.legal h2{margin:42px 0 14px;padding-top:6px}
.legal p{font-size:14.5px;color:#c7d4ec;margin-bottom:11px;line-height:1.9}
.legal p b{color:var(--primary2);font-weight:600}
.legal .prose-block{margin-top:34px}

/* ---------- 实时网络监测面板 ---------- */
.netmon-panel{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  background:linear-gradient(160deg,rgba(13,24,48,.92),rgba(8,14,28,.92));
  border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow);overflow:hidden}
.netmon-panel::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(600px 220px at 30% 0%,rgba(0,212,255,.13),transparent 60%)}
.netmon-card{position:relative;text-align:center;background:rgba(255,255,255,.03);
  border:1px solid rgba(120,160,255,.16);border-radius:16px;padding:20px 12px;transition:.25s}
.netmon-card:hover{border-color:rgba(0,212,255,.4);transform:translateY(-3px)}
.netmon-card.big{border-color:rgba(0,212,255,.35);
  background:radial-gradient(120% 130% at 50% 0%,rgba(0,212,255,.12),rgba(255,255,255,.03) 60%)}
.netmon-hud{font-family:ui-monospace,Consolas,monospace;font-size:10px;letter-spacing:.2em;
  color:rgba(0,212,255,.85);text-transform:uppercase;margin-bottom:10px}
.netmon-val{display:flex;align-items:baseline;justify-content:center;gap:4px}
.netmon-val em{font-style:normal;font-size:44px;font-weight:900;
  background:linear-gradient(90deg,#3EC9FF,#7C5CFF);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  font-family:ui-monospace,Consolas,monospace}
.netmon-unit{font-size:16px;color:var(--txt2);font-weight:700}
.netmon-val2{font-size:22px;font-weight:900;margin-bottom:4px;font-family:ui-monospace,Consolas,monospace}
.netmon-sub{font-size:11.5px;color:var(--muted);margin-top:6px;min-height:32px}
.netmon-dot{width:10px;height:10px;border-radius:50%;margin:10px auto 0;animation:nmPulse 1.8s ease-in-out infinite}
.netmon-dot.ok{background:#22c55e;box-shadow:0 0 12px rgba(34,197,94,.8)}
.netmon-dot.warn{background:#f5a623;box-shadow:0 0 12px rgba(245,166,35,.8)}
.netmon-dot.bad{background:#ff5170;box-shadow:0 0 12px rgba(255,81,112,.8)}
.netmon-dot.off{background:var(--txt3);animation:none}
@keyframes nmPulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.7)}}
.netmon-card #nm-test{margin:2px auto 10px}
.netmon-list{grid-column:1/-1;display:flex;flex-direction:column;gap:8px;margin-top:4px}
.netmon-row{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:12px;
  background:rgba(255,255,255,.025);border:1px solid rgba(120,160,255,.12)}
.netmon-row .flag{font-size:20px;width:30px;text-align:center}
.netmon-row .nm{font-weight:600;font-size:13.5px;min-width:120px}
.netmon-row .meta{font-size:12px;color:var(--muted);flex:1}
.netmon-row .rt{display:flex;gap:8px}
.netmon-row .rt span{font-size:11px;padding:2px 9px;border-radius:999px;border:1px solid var(--line);color:var(--txt2)}
.netmon-row .rt span.ok{color:var(--ok);border-color:rgba(34,197,94,.4)}
@media(max-width:820px){
  .netmon-panel{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .netmon-panel{grid-template-columns:1fr}
  .netmon-row{flex-wrap:wrap}
}

/* ---------- 整体视觉升级 ---------- */
.hero{padding:110px 0 100px}
.hero h1{font-size:clamp(34px,5.2vw,58px);line-height:1.12}
.hero p.lead{font-size:17.5px}
.sec-head h2{background:linear-gradient(90deg,#eaf2ff,#9fd4ff);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.section.alt{background:linear-gradient(180deg,rgba(10,17,32,.75),rgba(8,13,26,.85))}
.stats .num{font-family:ui-monospace,Consolas,monospace}
.stats .num em{font-size:30px}
.card,.plan,.node{border-color:rgba(120,160,255,.18)}
.card:hover,.plan:hover,.node:hover{box-shadow:0 24px 60px -22px rgba(0,212,255,.28)}
.card::after,.plan::after{content:"";position:absolute;top:0;left:16px;right:16px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,212,255,.55),transparent);opacity:.4}
.step::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  box-shadow:inset 0 0 40px rgba(0,212,255,.05)}
.navbar{background:rgba(5,9,20,.78)}
.dl-card{background:linear-gradient(135deg,rgba(17,28,58,.92),rgba(10,16,32,.92))}
.contact-box,.auth-tabs{background:rgba(255,255,255,.04)}
.btn{letter-spacing:.04em}
.nav-links a{padding:8px 14px;border-radius:10px}
.nav-links a.active{box-shadow:inset 0 0 0 1px rgba(0,212,255,.4),0 0 18px rgba(0,212,255,.12)}
.footer{background:linear-gradient(180deg,rgba(6,10,22,.6),rgba(4,7,15,.9))}

/* 响应式补充 */
@media(max-width:820px){
  .cov-stats{grid-template-columns:repeat(2,1fr)}
  .globe-chip{display:none}
}

/* ================================================================
   主题皮肤（data-theme：1~7；默认 3=深空蓝）
   ================================================================ */
:root[data-theme="1"]{
  --bg:#EDF2F9;--bg2:#F7FAFD;--panel:#FFFFFF;--panel2:#EAF3FF;
  --line:rgba(46,124,246,.18);--line2:rgba(46,124,246,.30);
  --txt:#1B2B45;--txt2:#54637A;--muted:#8A97AC;
  --primary:#2E7CF6;--primary2:#00A8FF;--accent:#7C5CFF;--danger:#E5484D;
  --grad:linear-gradient(135deg,#E4EDFB 0%,#F7FAFD 55%,#E6EEF9 100%);
  --brand:linear-gradient(90deg,#4D9BFF,#00A8FF);
  --glow1:rgba(46,124,246,.14);--glow2:rgba(0,168,255,.10);--glow3:rgba(124,92,255,.10);--gridc:rgba(46,124,246,.07);
}
:root[data-theme="2"]{
  --bg:#14101F;--bg2:#1D1730;--panel:#241B3D;--panel2:#2C2150;
  --line:rgba(167,139,250,.16);--line2:rgba(167,139,250,.30);
  --txt:#F0EAFE;--txt2:#C6B9E8;--muted:#9587BD;
  --primary:#A78BFA;--primary2:#F5B942;--accent:#8B5CF6;--danger:#FB7185;
  --grad:linear-gradient(135deg,#171221 0%,#14101F 55%,#1B1530 100%);
  --brand:linear-gradient(90deg,#A78BFA,#F5B942);
  --glow1:rgba(167,139,250,.16);--glow2:rgba(245,185,66,.10);--glow3:rgba(139,92,246,.14);--gridc:rgba(167,139,250,.06);
}
:root[data-theme="4"]{
  --bg:#EFF7F3;--bg2:#F8FCFA;--panel:#FFFFFF;--panel2:#E4F4EC;
  --line:rgba(16,185,129,.18);--line2:rgba(16,185,129,.30);
  --txt:#17352A;--txt2:#3E6657;--muted:#7A9C8D;
  --primary:#10B981;--primary2:#2DD4BF;--accent:#0E9F6E;--danger:#E5484D;
  --grad:linear-gradient(135deg,#E4F2EC 0%,#F8FCFA 55%,#E2F0E8 100%);
  --brand:linear-gradient(90deg,#10B981,#2DD4BF);
  --glow1:rgba(16,185,129,.14);--glow2:rgba(45,212,191,.10);--glow3:rgba(14,159,110,.10);--gridc:rgba(16,185,129,.07);
}
:root[data-theme="5"]{
  --bg:#0E0C0A;--bg2:#171310;--panel:#1F1813;--panel2:#2A2018;
  --line:rgba(240,180,92,.16);--line2:rgba(240,180,92,.30);
  --txt:#F7EFE4;--txt2:#D9C3A6;--muted:#A08A6E;
  --primary:#F0B45C;--primary2:#E8963B;--accent:#22C55E;--danger:#EF4444;
  --grad:linear-gradient(135deg,#16110D 0%,#0E0C0A 55%,#181410 100%);
  --brand:linear-gradient(90deg,#F0B45C,#E8963B);
  --glow1:rgba(240,180,92,.15);--glow2:rgba(232,150,59,.10);--glow3:rgba(232,150,59,.12);--gridc:rgba(240,180,92,.06);
}
:root[data-theme="6"]{
  --bg:#FDF6EE;--bg2:#FFFBF5;--panel:#FFFFFF;--panel2:#FDEBD9;
  --line:rgba(249,115,22,.18);--line2:rgba(249,115,22,.30);
  --txt:#3B2B1B;--txt2:#7A5C3E;--muted:#A38968;
  --primary:#F97316;--primary2:#FB923C;--accent:#16A34A;--danger:#DC2626;
  --grad:linear-gradient(135deg,#F8EAD9 0%,#FFFBF5 55%,#F5E7D5 100%);
  --brand:linear-gradient(90deg,#F97316,#FB923C);
  --glow1:rgba(249,115,22,.14);--glow2:rgba(251,146,60,.10);--glow3:rgba(249,115,22,.10);--gridc:rgba(249,115,22,.07);
}
:root[data-theme="7"]{
  --bg:#05070C;--bg2:#0B0F17;--panel:#10151F;--panel2:#161D2B;
  --line:rgba(56,189,248,.16);--line2:rgba(56,189,248,.30);
  --txt:#F2F6FF;--txt2:#A8B4CC;--muted:#6E7B94;
  --primary:#38BDF8;--primary2:#6366F1;--accent:#34D399;--danger:#F87171;
  --grad:linear-gradient(135deg,#0A0E18 0%,#05070C 55%,#0C111B 100%);
  --brand:linear-gradient(90deg,#38BDF8,#6366F1);
  --glow1:rgba(56,189,248,.14);--glow2:rgba(99,102,241,.12);--glow3:rgba(52,211,153,.10);--gridc:rgba(56,189,248,.06);
}
/* 主题切换下拉框 */
.theme-sel{background:rgba(255,255,255,.06);border:1px solid var(--line2);color:var(--txt);
  border-radius:9px;padding:7px 10px;font-size:12.5px;outline:none;cursor:pointer}
.theme-sel option{background:var(--panel);color:var(--txt)}