/* 雷紧公开站。颜色对齐 #070b14 / #22d3ee / #7c6cf6。 */
:root{
  --bg:#070b14;--card:rgba(255,255,255,.045);--line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);--txt:#e8eefc;--dim:#93a3bd;--dim2:#bcc9dd;
  --cyan:#22d3ee;--violet:#7c6cf6;--radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;color-scheme:dark}
body{
  margin:0;background:var(--bg);color:var(--txt);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(620px 360px at 10% -8%,rgba(34,211,238,.18),transparent 62%),
    radial-gradient(680px 400px at 96% 0%,rgba(124,108,246,.16),transparent 64%),
    var(--bg);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.26;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 78% 58% at 50% 0%,#000 22%,transparent 76%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:min(1100px,calc(100% - 32px));margin-inline:auto}
.hidden{display:none!important}

.navbar{position:sticky;top:0;z-index:40;padding:14px 0 0}
.nav-in{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:8px 8px 8px 16px;border:1px solid var(--line);border-radius:999px;
  background:rgba(8,12,22,.72);backdrop-filter:blur(12px);
}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:15px;white-space:nowrap}
.logo i{
  width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--cyan),var(--violet));color:#05121a;font-style:normal;font-size:13px;
}
.nav-links{display:flex;align-items:center;gap:2px}
.nav-links a{padding:7px 12px;border-radius:999px;font-size:14px;color:var(--dim)}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-links a.active{color:#062430;font-weight:800;background:linear-gradient(135deg,#8af3ff,#22d3ee)}
.burger{
  display:none;width:40px;height:36px;border-radius:10px;border:1px solid var(--line-strong);
  background:rgba(255,255,255,.05);color:var(--txt);font-size:18px;
}
@media (max-width:940px){
  .nav-links{
    display:none;position:absolute;left:0;right:0;top:calc(100% + 8px);
    flex-direction:column;padding:10px;border-radius:16px;
    background:#0c1422;border:1px solid var(--line-strong);z-index:50;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:11px 12px}
  .burger{display:inline-grid;place-items:center}
  .nav-cta{display:none}
  .nav-in{position:relative;border-radius:16px}
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:11px;padding:11px 20px;
  font:800 15px/1 inherit;cursor:pointer;white-space:nowrap;
}
.btn-primary{
  color:#06202a;
  background:linear-gradient(135deg,#8af3ff,#22d3ee 55%,#7c6cf6);
  box-shadow:0 10px 24px -16px rgba(34,211,238,.95);
}
.btn-primary:hover{filter:brightness(1.06)}
.btn-ghost{background:rgba(255,255,255,.05);border-color:var(--line-strong);color:#dce7f8}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-lg{padding:13px 26px;font-size:16px}
.btn-block{width:100%}

section{padding:52px 0}
.sec-head{margin-bottom:22px}
.sec-head .tag,.tag{color:var(--cyan);font-size:12px;font-weight:800;letter-spacing:.16em}
.sec-head h2{margin:6px 0 8px;font-size:clamp(22px,3vw,30px);letter-spacing:-.3px}
.sec-head p,.lead,.hint,.sub{color:var(--dim)}
.lead{font-size:16.5px;margin:0 0 22px;max-width:620px}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:900px){.g3{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.g2,.g3{grid-template-columns:1fr}}

.card{
  border:1px solid var(--line);border-radius:var(--radius);padding:20px;
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.025));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05);
}
.card:hover{border-color:rgba(34,211,238,.35)}
.card .ico{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;margin-bottom:12px;
  color:#9aefff;background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.28);font-weight:800;
}
.card h3{margin:0 0 6px;font-size:17px}
.card p{margin:0;color:var(--dim);font-size:14.5px}
.ticks{list-style:none;margin:12px 0 0;padding:0;color:var(--dim2);font-size:13.5px}
.ticks li{padding:2px 0}
.ticks li::before{content:"▸ ";color:var(--cyan)}

.hero{padding:48px 0 18px}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr;gap:20px}.hero{padding-top:28px}}
.kicker{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  padding:4px 12px;border-radius:999px;border:1px solid rgba(34,211,238,.35);
  background:rgba(34,211,238,.08);color:#a5f3fc;font-size:13px;
}
.dot{width:7px;height:7px;border-radius:50%;background:#4ade80}
h1{margin:0 0 14px;font-size:clamp(32px,4.6vw,52px);line-height:1.12;letter-spacing:-.6px;font-weight:800}
h1 .grad{
  background:linear-gradient(100deg,#67e8f9,#7c6cf6 58%,#22d3ee);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.cta-row{display:flex;gap:10px;flex-wrap:wrap}
.cta-hint{margin:12px 0 0;color:var(--dim);font-size:13px}
.cta-hint b{color:#8af3ff;font-weight:700}
.wx-card{
  border:1px solid rgba(34,211,238,.32);border-radius:20px;padding:22px;
  background:
    radial-gradient(180px 120px at 100% 0,rgba(34,211,238,.22),transparent 70%),
    linear-gradient(165deg,rgba(34,211,238,.1),rgba(124,108,246,.06) 55%,rgba(255,255,255,.03));
  box-shadow:0 22px 50px -34px rgba(34,211,238,.85);
}
.wx-card h3{margin:0 0 4px;font-size:12px;letter-spacing:.14em;color:#a5f3fc}
.wx-card .big{font:800 22px/1.3 ui-monospace,SFMono-Regular,Consolas,monospace;color:#fff;word-break:break-all}
.wx-card .sub{margin:6px 0 14px;font-size:13px}
.wx-card ul{list-style:none;margin:14px 0 0;padding:12px 0 0;border-top:1px dashed rgba(255,255,255,.14);font-size:13.5px}
.wx-card li{display:flex;justify-content:space-between;gap:10px;padding:3px 0;color:#c3d0e4}
.wx-card b{color:#9df5ff;font-weight:700}

.page-head{padding:46px 0 6px}
.crumb{margin:0 0 10px;color:var(--dim);font-size:13px}
.crumb a{color:#a5f3fc}
.crumb span{margin:0 6px;opacity:.5}
.page-head h1{font-size:clamp(28px,4vw,40px)}
.page-head p{margin:0;max-width:680px;color:var(--dim)}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
@media (max-width:800px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.steps{grid-template-columns:1fr}}
.step{border:1px solid var(--line);border-radius:14px;padding:16px;background:rgba(255,255,255,.03)}
.step .num{
  width:26px;height:26px;margin-bottom:10px;border-radius:8px;display:grid;place-items:center;
  font:800 12px/1 ui-monospace,Consolas,monospace;color:#06202a;background:linear-gradient(135deg,#8af3ff,#22d3ee);
}
.step h4{margin:0 0 4px;font-size:15px}
.step p{margin:0;color:var(--dim);font-size:13.5px}

.faq-list{display:grid;gap:10px}
details.faq{border:1px solid var(--line);border-radius:14px;padding:14px 16px;background:rgba(255,255,255,.03)}
details.faq[open]{border-color:rgba(34,211,238,.4);background:rgba(34,211,238,.05)}
details.faq summary{cursor:pointer;list-style:none;font-weight:800;display:flex;justify-content:space-between;gap:12px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";color:var(--cyan)}
details.faq[open] summary::after{content:"–"}
details.faq .ans{margin:10px 0 0;padding-top:10px;border-top:1px dashed rgba(255,255,255,.12);color:var(--dim);font-size:14.5px}
details.faq b{color:#dbe7f7}

.cta-band{padding:8px 0 56px}
.cta-in{
  display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;
  padding:26px 28px;border-radius:20px;border:1px solid rgba(34,211,238,.32);
  background:
    radial-gradient(420px 160px at 0 0,rgba(34,211,238,.18),transparent 70%),
    radial-gradient(420px 160px at 100% 100%,rgba(124,108,246,.16),transparent 70%),
    rgba(255,255,255,.03);
}
.cta-in h2{margin:0 0 6px;font-size:clamp(20px,2.4vw,28px)}
.cta-in p{margin:0;color:#c2d1e6}
.cta-act{display:flex;gap:10px;flex-wrap:wrap}
@media (max-width:640px){.cta-act{width:100%}.cta-act .btn{flex:1}}

footer{border-top:1px solid var(--line);padding:22px 0 32px;color:var(--dim);font-size:13px}
.foot-bot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.foot-bot a{color:#a5f3fc}

label{display:grid;gap:6px;margin:10px 0;font-size:13px;font-weight:700;color:var(--dim2)}
input,select,textarea{
  width:100%;border:1px solid var(--line-strong);border-radius:12px;
  background:#0b1220;color:#fff;padding:11px 12px;font:inherit;
}
textarea{min-height:88px}
.form-error{color:#fda4af;min-height:1.1em;margin:0}
.preview{margin-top:10px;padding:10px 12px;border-radius:12px;background:rgba(5,9,16,.55);border:1px solid var(--line)}
code{font:0.92em ui-monospace,Consolas,monospace;color:#8af3ff;background:rgba(34,211,238,.1);border-radius:6px;padding:1px 5px}