html{
  background: var(--bg);
}

body{
  background-color: var(--bg);
  min-height: 100vh;
  overscroll-behavior-y: none;
}

:root{
  --bg:#050505;
  --fg:#f5f5f5;
  --muted:rgba(245,245,245,.68);
  --dim:rgba(245,245,245,.45);
  --hair:rgba(255,255,255,.10);
  --max:980px;
  --pad:22px;
  --radius:18px;
  --fsTitle:clamp(44px,7vw,86px);
  --fsH2:clamp(22px,3.4vw,30px);
  --fsBody:clamp(17px,2.2vw,22px);
  --fsSmall:14px;
  --lh:1.55;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text",system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background:
    radial-gradient(1200px 700px at 25% 10%, rgba(255,255,255,.08), transparent 55%),
    radial-gradient(900px 600px at 70% 35%, rgba(255,255,255,.05), transparent 55%),
    linear-gradient(180deg, #0a0a0a, var(--bg));
  color:var(--fg);
  overflow-x:hidden;
}
a{color:var(--fg); text-decoration:none}
a:hover{opacity:.85}

.wrap{
  max-width:var(--max);
  margin:0 auto;
  padding: calc(env(safe-area-inset-top) + 18px) var(--pad) 64px;
}

.topbar{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:18px;
  margin-bottom:26px;
  position:sticky;
  top:0;
  padding-top: calc(env(safe-area-inset-top) + 12px);
  padding-bottom: 14px;
  background: linear-gradient(180deg, rgba(5,5,5,.95), rgba(5,5,5,.65) 65%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index:10;
}
.brand{
  font-size:12px;
  letter-spacing:.28em;
  text-transform:uppercase;
  opacity:.9;
  user-select:none;
  white-space:nowrap;
}
.nav{
  display:flex;
  flex-wrap:wrap;
  gap:14px 16px;
  align-items:center;
  justify-content:flex-end;
  text-align:right;
}
.nav a{
  font-size:14px;
  color:var(--muted);
  padding:6px 0;
  border-bottom:1px solid transparent;
  transition:opacity .2s ease, border-color .2s ease, color .2s ease;
}
.nav a.active{ color:var(--fg); border-color:rgba(255,255,255,.35); }

.lang{
  font-size:14px;
  color:var(--muted);
  display:flex;
  gap:8px;
  align-items:center;
  user-select:none;
}
.lang button{
  background:transparent;
  border:0;
  color:var(--muted);
  font:inherit;
  padding:6px 8px;
  border-radius:10px;
  cursor:pointer;
  transition:background .2s ease, color .2s ease;
}
.lang button.active{
  color:var(--fg);
  background:rgba(255,255,255,.10);
}

.hero{ padding-top: 18px; animation:fade .55s ease both; }
h1{
  margin:0 0 12px 0;
  font-weight:520;
  letter-spacing:-.02em;
  font-size:var(--fsTitle);
  line-height:1.02;
}
h2{
  margin:0 0 10px 0;
  font-weight:520;
  letter-spacing:-.01em;
  font-size:var(--fsH2);
}
.lead{
  font-size:var(--fsBody);
  line-height:var(--lh);
  color:var(--muted);
  max-width: 760px;
}
.stack{
  margin-top:26px;
  display:flex;
  flex-direction:column;
  gap:16px;
  max-width: 760px;
}
.line{
  font-size:var(--fsBody);
  line-height:var(--lh);
  color:var(--muted);
}
.hr{ height:1px; background:var(--hair); margin:26px 0; }

.cta{ margin-top:28px; display:flex; gap:12px; flex-wrap:wrap; }
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:12px 16px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.06);
  color:var(--fg);
  font-size:14px;
  letter-spacing:.02em;
  cursor:pointer;
  transition:transform .12s ease, background .2s ease, border-color .2s ease;
}
.btn:hover{ background:rgba(255,255,255,.09); border-color:rgba(255,255,255,.20); transform:translateY(-1px); }
.btn.secondary{ background:transparent; }

.card{
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
  border-radius: var(--radius);
  padding:18px;
}
.small{ font-size:var(--fsSmall); color:var(--dim); line-height:1.45; }

.grid{
  margin-top:18px;
  display:grid;
  grid-template-columns:1fr;
  gap:14px;
}
@media (min-width:860px){
  .grid{grid-template-columns:1fr 1fr}
}

.hidden{display:none !important}

.kbd{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.80);
}

.quote{
  padding:14px 16px;
  border-left:2px solid rgba(255,255,255,.20);
  color:rgba(245,245,245,.78);
  line-height:1.55;
  background:rgba(255,255,255,.03);
  border-radius:14px;
}

.footer{
  margin-top:56px;
  padding-top:18px;
  border-top:1px solid var(--hair);
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  color:var(--dim);
  font-size:12px;
}

@keyframes fade{
  from{opacity:0; transform:translateY(6px)}
  to{opacity:1; transform:translateY(0)}
}