@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@600&display=swap');

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#1a1a1a;
  --bg-elev:#202020;
  --bg-elev-2:#262626;
  --border:#2e2e2e;
  --border-strong:#3a3a3a;
  --text:#ededed;
  --text-dim:#9a9a9a;
  --text-mute:#6e6e6e;
  --white:#fff;
}
html,body{height:100%}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'IBM Plex Sans',system-ui,sans-serif;
  font-weight:600;
  font-size:15px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
  display:flex;flex-direction:column;
}
a{color:var(--text);text-decoration:none}
a:focus-visible,button:focus-visible{outline:1px solid var(--text);outline-offset:2px;border-radius:2px}

/* Scrollbar */
*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-track{background:#0f0f0f}
*::-webkit-scrollbar-thumb{background:#2a2a2a;border-radius:0}
*::-webkit-scrollbar-thumb:hover{background:#3a3a3a}
html{scrollbar-color:#2a2a2a #0f0f0f;scrollbar-width:thin}

/* Header */
.header{
  position:sticky;top:0;z-index:50;
  background:rgba(26,26,26,.85);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  max-width:1080px;margin:0 auto;
  padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:10px;color:var(--white)}
.brand img{width:22px;height:22px;display:block;filter:invert(1)}
.brand span{font-size:15px;letter-spacing:.5px}

.lang-wrap{position:relative}
.icon-btn{
  background:transparent;border:1px solid transparent;color:var(--text-dim);
  width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:6px;cursor:pointer;transition:color .15s ease,border-color .15s ease;
}
.icon-btn:hover{color:var(--text);border-color:var(--border)}
.icon-btn svg{width:16px;height:16px}

.lang-menu{
  position:absolute;top:calc(100% + 8px);right:0;
  background:var(--bg-elev);border:1px solid var(--border);
  border-radius:6px;padding:4px;min-width:140px;
  opacity:0;transform:translateY(-4px);pointer-events:none;
  transition:opacity .15s ease,transform .15s ease;
  box-shadow:0 8px 24px rgba(0,0,0,.4);
}
.lang-menu.open{opacity:1;transform:translateY(0);pointer-events:auto}
.lang-menu button{
  display:block;width:100%;text-align:left;
  background:transparent;border:0;color:var(--text-dim);
  font:inherit;padding:8px 12px;border-radius:4px;cursor:pointer;
}
.lang-menu button:hover{background:var(--bg-elev-2);color:var(--text)}
.lang-menu button.active{color:var(--white)}

/* Main */
.main{flex:1;max-width:840px;width:100%;margin:0 auto;padding:64px 24px 80px}
.intro{margin-bottom:56px}
.intro h1{
  font-size:28px;color:var(--white);margin-bottom:18px;letter-spacing:-.3px;
}
.intro p{color:var(--text-dim);max-width:640px}

.section-title{
  font-size:11px;text-transform:uppercase;letter-spacing:2px;
  color:var(--text-mute);margin-bottom:18px;
}
.subsection-title{
  font-size:12px;text-transform:uppercase;letter-spacing:1.8px;
  color:var(--text-mute);margin:32px 0 14px;
}

.card{
  background:var(--bg-elev);
  border:1px solid var(--border);
  border-radius:8px;
  padding:24px;
  margin-bottom:14px;
  transition:border-color .2s ease;
}
.card:hover{border-color:var(--border-strong)}
.card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap}
.card-title{color:var(--white);font-size:16px;margin-bottom:6px}
.card-version{color:var(--text-mute);font-size:12px;letter-spacing:.5px}
.card-desc{color:var(--text-dim);margin-top:14px;font-size:14px}
.card-desc p+p{margin-top:10px}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--white);color:#000;
  border:0;border-radius:6px;
  padding:10px 18px;font:inherit;font-size:13px;
  cursor:pointer;transition:opacity .15s ease;
  white-space:nowrap;
}
.btn:hover{opacity:.85}
.btn-ghost{
  background:transparent;color:var(--text-dim);
  border:1px solid var(--border);
}
.btn-ghost:hover{color:var(--text);border-color:var(--border-strong);opacity:1}

.see-more{
  margin-top:14px;background:none;border:0;color:var(--text-mute);
  font:inherit;font-size:13px;cursor:pointer;padding:0;display:inline-flex;align-items:center;gap:6px;
}
.see-more:hover{color:var(--text)}
.see-more .chev{transition:transform .2s ease;display:inline-block}
.see-more.open .chev{transform:rotate(180deg)}

.expand{
  max-height:0;overflow:hidden;
  transition:max-height .3s ease;
}
.expand-inner{padding-top:14px;color:var(--text-dim);font-size:14px}
.expand-inner p+p{margin-top:10px}
.tos-link{color:var(--white);font-weight:600;text-decoration:underline}

.coming{opacity:.55}
.coming .card-title{color:var(--text-dim)}
.coming-tag{color:var(--text-mute);font-size:13px;margin-top:8px}

/* Modal */
.modal-backdrop{
  position:fixed;inset:0;background:rgba(0,0,0,.6);
  display:none;align-items:center;justify-content:center;z-index:100;
  padding:20px;
}
.modal-backdrop.open{display:flex}
.modal{
  background:var(--bg-elev);border:1px solid var(--border);
  border-radius:8px;padding:28px;max-width:420px;width:100%;
}
.modal h2{color:var(--white);font-size:17px;margin-bottom:16px}
.modal p{color:var(--text-dim);font-size:14px;margin-bottom:18px}
.check-row{display:flex;align-items:center;gap:10px;margin-bottom:22px;cursor:pointer;user-select:none}
.check-row input{position:absolute;opacity:0;pointer-events:none}
.checkbox{
  width:16px;height:16px;border:1px solid var(--border-strong);border-radius:3px;
  display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
  transition:background .15s ease,border-color .15s ease;
}
.check-row input:checked + .checkbox{background:var(--white);border-color:var(--white)}
.check-row input:checked + .checkbox::after{
  content:"";width:8px;height:5px;border-left:2px solid #000;border-bottom:2px solid #000;
  transform:rotate(-45deg) translate(1px,-1px);
}
.check-label{color:var(--text);font-size:13px}
.modal-actions{display:flex;gap:10px;justify-content:flex-end}
.btn[disabled]{opacity:.4;cursor:not-allowed}
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--bg-elev);border:1px solid var(--border);
  color:var(--text);padding:14px 20px;border-radius:6px;font-size:13px;
  max-width:90vw;opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease;
  z-index:200;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.error{border-color:#5a2a2a;color:#f5c0c0}

/* Footer */
.footer{
  border-top:1px solid var(--border);
  padding:32px 24px;
  color:var(--text-mute);font-size:13px;
}
.footer-inner{max-width:1080px;margin:0 auto;display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:center}
.footer a{color:var(--text-mute)}
.footer a:hover{color:var(--text)}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;align-items:center}
.socials{display:flex;gap:14px;flex-wrap:wrap}
.socials a{
  width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--border);border-radius:6px;transition:border-color .15s ease,color .15s ease;
}
.socials a:hover{border-color:var(--border-strong);color:var(--text)}
.socials svg{width:14px;height:14px}

/* ToS page */
.tos-content{max-width:720px}
.tos-content h1{color:var(--white);font-size:24px;margin-bottom:24px}
.tos-content h2{color:var(--white);font-size:15px;margin:24px 0 10px}
.tos-content p{color:var(--text-dim);font-size:14px;margin-bottom:12px}

@media (max-width:600px){
  .main{padding:40px 20px 60px}
  .intro h1{font-size:22px}
  .card-head{flex-direction:column;align-items:stretch}
  .btn{justify-content:center}
}

/* Download button override */
.download-row{margin-top:22px;display:flex;justify-content:flex-start}
.btn-download{
  background:#0a0a0a;color:var(--white);
  border:1px solid var(--border-strong);
  border-radius:0;
  padding:16px 32px;font-size:15px;letter-spacing:.4px;
  transition:background .15s ease,border-color .15s ease;
}
.btn-download:hover{background:#000;border-color:#4a4a4a;opacity:1}

/* Why section */
.why{margin-top:72px;padding-top:40px;border-top:1px solid var(--border)}
.why h2{
  font-size:11px;text-transform:uppercase;letter-spacing:2px;
  color:var(--text-mute);margin-bottom:18px;
}
.why p{color:var(--text-dim);max-width:640px}

/* ToS content typography */
.tos-content h2{margin-top:28px}
.tos-content ul{color:var(--text-dim);font-size:14px;margin:0 0 12px 20px}
.tos-content ul li{margin-bottom:4px}
.tos-content .tos-meta{color:var(--text-mute);font-size:13px;margin-bottom:24px}