:root{
  --bg:#020914; --panel:#071d32; --panel2:#0e2f4e; --line:#2d638b;
  --text:#fff; --muted:#a7bfd3; --blue:#39a9ff; --red:#ff4242; --gold:#ffc34d;
  --green:#45e38a; --purple:#b38cff;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif}
body{min-height:100vh}
a{color:inherit}
.wrap{width:min(1180px,100%);margin:0 auto;padding:18px}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0 20px}
.brand{display:flex;align-items:center;gap:14px}
.brand img{width:78px;height:78px;object-fit:contain}
.brand b{font-size:30px}
.brand small{display:block;color:var(--muted);font-size:15px;margin-top:3px}
.beta{background:#0c2c4b;border:1px solid #2e6b98;padding:10px 14px;border-radius:999px;font-weight:900}
.hero{padding:26px 0 10px}
.hero h1{font-size:clamp(44px,7vw,86px);line-height:.88;margin:0;letter-spacing:-2px}
.hero p{font-size:clamp(20px,3vw,30px);color:var(--muted);max-width:850px;line-height:1.15}
.section{margin-top:64px}
.section h2{font-size:clamp(36px,5vw,58px);line-height:.9;margin:0 0 18px}
.blue{color:var(--blue)} .red{color:var(--red)} .gold{color:var(--gold)}
.green{color:var(--green)} .purple{color:var(--purple)}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.card{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:18px;padding:18px;text-decoration:none;display:block;min-height:180px}
.card .ico{font-size:46px}
.card b{display:block;font-size:28px;line-height:1;margin-top:16px}
.card small{display:block;color:var(--muted);font-size:17px;line-height:1.2;margin-top:8px}
.card .go{display:block;margin-top:18px;font-size:18px;font-weight:950;color:#c9ebff}
.row{background:linear-gradient(180deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:16px;padding:14px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:center}
.row b{font-size:26px;line-height:1}
.row small{display:block;color:var(--muted);font-size:17px;margin-top:5px}
.btn{border:1px solid #4480ae;background:#12436e;color:#fff;font-weight:950;border-radius:13px;min-height:54px;padding:10px 16px;font-size:18px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}
.btn.redbg{background:#7a1722;border-color:#ba3543}
.btn.greenbg{background:#0d5633;border-color:#278b5d}
.watchShell{background:#000;border:1px solid #304f66;border-radius:18px;overflow:hidden}
.videoMock{aspect-ratio:16/9;display:grid;place-items:center;background:radial-gradient(circle at 50% 35%,#183b62,#02060b 65%);text-align:center;padding:20px}
.videoMock .live{font-size:18px;color:#fff;background:#d71920;border-radius:999px;padding:7px 11px;font-weight:950}
.videoMock h3{font-size:clamp(30px,5vw,64px);margin:18px 0 8px}
.videoMock p{font-size:18px;color:#aabfd0}
.chat{border-top:1px solid #304f66;background:#061524}
.chatHead{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid #24435a}
.chatHead b{font-size:22px}
.chatMessages{max-height:320px;overflow:auto;padding:12px}
.msg{padding:10px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.msg b{font-size:16px;color:#8ed7ff}
.msg span{display:block;font-size:17px;margin-top:4px}
.chatInput{display:flex;gap:8px;padding:12px;border-top:1px solid #24435a}
.chatInput input{flex:1;min-height:52px;border-radius:12px;border:1px solid #315f84;background:#020b13;color:#fff;padding:10px 12px;font-size:17px}
.bottomNav{display:none}
.note{color:#a7bfd3;font-size:15px;line-height:1.35}
.feedbackBar{position:fixed;right:18px;bottom:18px;z-index:50}
.feedbackBar a{background:#ff4242;color:#fff;border:0;border-radius:999px;padding:14px 18px;text-decoration:none;font-weight:950;box-shadow:0 8px 24px rgba(0,0,0,.4)}
@media(max-width:760px){
  .wrap{padding:10px 8px 108px}
  .topbar{padding:8px 6px 14px}
  .brand img{width:58px;height:58px}
  .brand b{font-size:20px}
  .brand small{font-size:12px}
  .beta{font-size:12px;padding:8px 10px}
  .hero{padding-top:14px}
  .hero h1{font-size:58px}
  .hero p{font-size:25px}
  .section{margin-top:72px}
  .section h2{font-size:50px;margin-bottom:18px}
  .grid{grid-template-columns:1fr;gap:8px}
  .card{min-height:108px;padding:10px 12px;display:grid;grid-template-columns:76px minmax(0,1fr) 82px;grid-template-rows:auto auto;column-gap:8px;align-items:center}
  .card .ico{grid-row:1/span 2;font-size:62px}
  .card b{font-size:36px;line-height:.9;margin:0}
  .card small{font-size:22px;line-height:.98;margin-top:4px}
  .card .go{grid-column:3;grid-row:1/span 2;margin:0;text-align:right;font-size:17px}
  .row{min-height:94px;padding:10px;grid-template-columns:minmax(0,1fr) 125px}
  .row b{font-size:34px;line-height:.9}
  .row small{font-size:22px;line-height:.96}
  .btn{min-height:62px;font-size:21px}
  .videoMock h3{font-size:42px}
  .chatMessages{max-height:360px}
  .bottomNav{position:fixed;z-index:40;bottom:0;left:0;right:0;background:#020914;border-top:1px solid #285578;display:grid;grid-template-columns:repeat(5,1fr);padding:6px 6px calc(6px + env(safe-area-inset-bottom));gap:4px}
  .bottomNav a{min-height:74px;border-radius:12px;color:#fff;text-decoration:none;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;font-size:14px;font-weight:900}
  .bottomNav a span:first-child{font-size:28px}
  .bottomNav a.active{background:#123f68;border:1px solid #3b78a6}
  .feedbackBar{right:12px;bottom:98px}
}