:root{
  --bg0:#070a11;
  --bg1:#0b1220;
  --panel:rgba(255,255,255,.06);
  --panel2:rgba(255,255,255,.085);
  --stroke:rgba(255,255,255,.12);
  --text:#f4f3ef;
  --muted:rgba(255,255,255,.72);
  --accent:#6aa8ff;
  --accent2:#4f8cff;
  --shadow:0 18px 50px rgba(0,0,0,.5);
  --r:18px;
  --max:1100px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  color:var(--text);
  background:
    radial-gradient(1200px 800px at 15% 10%, rgba(106,168,255,.16), transparent 55%),
    radial-gradient(900px 700px at 85% 0%, rgba(220,179,97,.10), transparent 50%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
.link{color:var(--accent)}
.link:hover{text-decoration:underline}
.muted{color:var(--muted)}
.wrap{max-width:var(--max); margin:0 auto; padding:24px 16px}
.topbar{
  position:sticky; top:0; z-index:50;
  display:flex; align-items:center; justify-content:space-between;
  padding:12px 16px;
  border-bottom:1px solid rgba(255,255,255,.06);
  background:rgba(7,10,17,.62);
  backdrop-filter: blur(14px);
}
.brand{display:flex; align-items:center; gap:10px; min-width:0}
.logo{
  width:34px; height:34px; border-radius:12px;
  display:grid; place-items:center;
  background:linear-gradient(180deg, rgba(106,168,255,.35), rgba(255,255,255,.08));
  border:1px solid rgba(255,255,255,.12);
  font-weight:800;
}
.brand-name{font-weight:800; letter-spacing:.2px; white-space:nowrap}
.nav{display:flex; gap:14px; align-items:center; flex-wrap:wrap}
.navlink{opacity:.85; padding:8px 10px; border-radius:12px}
.navlink:hover{opacity:1; background:rgba(255,255,255,.06)}
.top-actions{display:flex; gap:10px; align-items:center}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  height:40px; padding:0 14px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.06);
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
  font-weight:700;
  cursor:pointer;
}
.btn:hover{transform:translateY(-1px)}
.btn.primary{
  background:linear-gradient(180deg, rgba(106,168,255,.38), rgba(255,255,255,.10));
  border-color:rgba(106,168,255,.45);
}
.btn.ghost{background:rgba(255,255,255,.04)}
.langbtn{
  height:40px; padding:0 12px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.04);
  color:var(--text);
  font-weight:700;
  cursor:pointer;
}
.hero{display:grid; grid-template-columns:1.2fr .8fr; gap:18px; padding-top:18px}
.kicker{display:inline-flex; gap:8px; align-items:center; font-weight:800; opacity:.92}
.h1{font-size:42px; line-height:1.05; margin:10px 0 10px}
.lead{font-size:17px; line-height:1.65; margin:0 0 14px; color:rgba(255,255,255,.84)}
.cta-row{display:flex; gap:12px; flex-wrap:wrap; margin-top:8px}
.meta-row{display:flex; gap:8px; flex-wrap:wrap; margin-top:12px}
.dot{opacity:.5}
.section{padding:24px 0}
.section-head h2{margin:0 0 6px; font-size:26px}
.section-head p{margin:0}
.grid2{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px; margin-top:14px}
.grid3{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:12px; margin-top:14px}
.tile{
  display:block;
  padding:14px 14px;
  border-radius:var(--r);
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(0,0,0,.22));
  border:1px solid rgba(255,255,255,.10);
  box-shadow: var(--shadow);
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
  min-height:98px;
}
.tile:hover{transform:translateY(-2px); border-color:rgba(106,168,255,.32)}
.tile-title{font-weight:900; margin-bottom:6px}
.tile-desc{color:var(--muted); line-height:1.45}
.tags{margin-top:10px; font-size:12px; opacity:.72}
.glass{
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(0,0,0,.25));
  border:1px solid rgba(255,255,255,.10);
  border-radius:var(--r);
  box-shadow:var(--shadow);
}
.card{padding:16px}
.card-title{font-weight:900; margin-bottom:10px}
.bullets{margin:10px 0 0 18px; color:var(--muted); line-height:1.6}
.mt16{margin-top:16px}
.mt12{margin-top:12px}
.stack{display:grid; gap:12px; margin-top:14px}
.block{padding:16px}
.contact-card{
  display:grid; gap:10px;
  padding:16px;
  border-radius:var(--r);
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(0,0,0,.22));
  border:1px solid rgba(255,255,255,.10);
}
.contact-item{display:flex; flex-direction:column; gap:4px}
.contact-label{font-weight:900}
.footer{
  padding:22px 16px 26px;
  border-top:1px solid rgba(255,255,255,.06);
  background:rgba(0,0,0,.18);
}
.footgrid{
  max-width:var(--max);
  margin:0 auto;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
}
.foot-title{font-weight:900; margin-bottom:6px}
.copyright{max-width:var(--max); margin:14px auto 0; padding:0 0 0; font-size:12px}

/* reveal animation */
.reveal{opacity:0; transform: translateY(14px); transition: opacity .45s ease, transform .45s ease}
.reveal.is-in{opacity:1; transform:none}

@media (max-width: 900px){
  .hero{grid-template-columns:1fr}
  .h1{font-size:34px}
  .grid3{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
  .nav{display:none}
  .footgrid{grid-template-columns:1fr}
}


.footer-brand{
  display:flex;
  align-items:center;
  gap:14px;
}

.footer-logo{
  width:100px;
  height:100px;
  object-fit:contain;
  border-radius:12px;
  box-shadow: 0 0 18px rgba(100,150,255,.35);
}

.prose{line-height:1.75;font-size:16px}
.prose h2{margin-top:22px}
.prose pre{overflow:auto;padding:14px;border-radius:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.10)}
.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}
.prose a{color:inherit;text-decoration:underline}


.social-inline {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* 主按钮 */
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  border-radius: 40px;

  background: rgba(255, 215, 150, 0.06);
  border: 1px solid rgba(255, 215, 150, 0.18);

  color: #e6c78f;
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 0.5px;

  transition: all 0.35s ease;
  backdrop-filter: blur(6px);
}

/* icon */
.social-link i {
  font-size: 16px;
  color: #d6a75f;
}

/* hover 效果 */
.social-link:hover {
  background: linear-gradient(135deg, #d6a75f, #f4d28a);
  color: #0b0f1a;
  transform: translateY(-3px);
  box-shadow: 0 0 18px rgba(214, 167, 95, 0.45);
}

.social-link:hover i {
  color: #0b0f1a;
}