/* =====================================================================
   TianChen Entertainment Platform - Star Amethyst Theme
   Deep-space purple (#0f0b21) + Starlight violet (#7c5cff) + Champagne gold (#f0c15c)
   Prefix: .tc-   |  Build: 2026-10
   ===================================================================== */
:root{
  --tc-bg:#0f0b21;
  --tc-bg-2:#171130;
  --tc-bg-3:#1e1740;
  --tc-line:rgba(167,139,250,.16);
  --tc-line-2:rgba(167,139,250,.28);
  --tc-purple:#7c5cff;
  --tc-purple-2:#a78bfa;
  --tc-purple-3:#c4b5fd;
  --tc-gold:#f0c15c;
  --tc-gold-2:#f7d98c;
  --tc-text:#f3f0ff;
  --tc-text-2:#a49bc8;
  --tc-text-3:#7a719e;
  --tc-grad:linear-gradient(120deg,#7c5cff 0%,#a78bfa 48%,#f0c15c 100%);
  --tc-grad-2:linear-gradient(180deg,rgba(124,92,255,.22),rgba(15,11,33,0));
  --tc-shadow:0 18px 46px rgba(5,2,20,.55);
  --tc-radius:18px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--tc-bg);
  color:var(--tc-text);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
/* starfield backdrop */
body::before{
  content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(1.5px 1.5px at 12% 22%,rgba(240,193,92,.75),transparent 60%),
    radial-gradient(1.2px 1.2px at 34% 68%,rgba(167,139,250,.7),transparent 60%),
    radial-gradient(1.6px 1.6px at 58% 14%,rgba(255,255,255,.6),transparent 60%),
    radial-gradient(1.2px 1.2px at 72% 44%,rgba(167,139,250,.55),transparent 60%),
    radial-gradient(1.8px 1.8px at 86% 76%,rgba(240,193,92,.6),transparent 60%),
    radial-gradient(1.2px 1.2px at 24% 88%,rgba(255,255,255,.45),transparent 60%),
    radial-gradient(1.4px 1.4px at 46% 38%,rgba(196,181,253,.5),transparent 60%),
    radial-gradient(1.2px 1.2px at 92% 24%,rgba(255,255,255,.5),transparent 60%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:-3;pointer-events:none;
  background:
    radial-gradient(46rem 30rem at 82% -6%,rgba(124,92,255,.16),transparent 62%),
    radial-gradient(40rem 26rem at -8% 34%,rgba(240,193,92,.07),transparent 60%),
    radial-gradient(50rem 34rem at 50% 118%,rgba(124,92,255,.12),transparent 62%);
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul,ol{list-style:none}
.tc-container{width:min(1200px,92%);margin:0 auto}

/* ---------- topbar ---------- */
.tc-topbar{
  background:linear-gradient(90deg,rgba(124,92,255,.16),rgba(240,193,92,.12));
  border-bottom:1px solid var(--tc-line);
  font-size:12.5px;color:var(--tc-text-2);
}
.tc-topbar .tc-container{display:flex;justify-content:space-between;align-items:center;height:36px;gap:16px}
.tc-topbar strong{color:var(--tc-gold);font-weight:600}
.tc-topbar a:hover{color:var(--tc-purple-3)}

/* ---------- header ---------- */
.tc-header{
  position:sticky;top:0;z-index:60;
  background:rgba(15,11,33,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--tc-line);
}
.tc-header .tc-container{display:flex;align-items:center;gap:26px;height:72px}
.tc-logo{display:flex;align-items:center;flex-shrink:0}
.tc-logo img{height:46px;width:auto}
.tc-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.tc-nav a{
  padding:9px 15px;border-radius:10px;font-size:15px;color:var(--tc-text-2);
  transition:.22s;white-space:nowrap;
}
.tc-nav a:hover{color:var(--tc-text);background:rgba(124,92,255,.14)}
.tc-nav a.tc-on{color:var(--tc-gold);background:rgba(124,92,255,.18)}
.tc-header-cta{
  flex-shrink:0;padding:10px 22px;border-radius:12px;font-size:14.5px;font-weight:600;
  color:#140d2e;background:var(--tc-grad);transition:.25s;white-space:nowrap;
}
.tc-header-cta:hover{box-shadow:0 0 0 4px rgba(124,92,255,.22);transform:translateY(-1px)}
.tc-burger{
  display:none;width:44px;height:44px;border:1px solid var(--tc-line-2);border-radius:12px;
  background:rgba(124,92,255,.1);cursor:pointer;position:relative;flex-shrink:0;
}
.tc-burger span,.tc-burger span::before,.tc-burger span::after{
  position:absolute;left:11px;width:22px;height:2px;background:var(--tc-text);border-radius:2px;transition:.3s;
}
.tc-burger span{top:50%;margin-top:-1px}
.tc-burger span::before{content:"";left:0;top:-7px}
.tc-burger span::after{content:"";left:0;top:7px}
.tc-burger.tc-open span{background:transparent}
.tc-burger.tc-open span::before{top:0;transform:rotate(45deg)}
.tc-burger.tc-open span::after{top:0;transform:rotate(-45deg)}

/* ---------- hero ---------- */
.tc-hero{
  position:relative;min-height:640px;display:flex;align-items:center;
  background:url("../images/hero-main.jpg") center 30%/cover no-repeat;
  border-bottom:1px solid var(--tc-line);
}
@media (max-width:640px){
  .tc-hero{background-image:url("../images/hero-main-sm.jpg")}
}
.tc-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(15,11,33,.94) 6%,rgba(15,11,33,.72) 44%,rgba(15,11,33,.24) 78%,rgba(30,23,64,.38) 100%);
}
.tc-hero .tc-container{position:relative;z-index:2;padding:96px 0 120px}
.tc-hero-tag{
  display:inline-flex;align-items:center;gap:9px;padding:7px 16px;border-radius:999px;
  border:1px solid var(--tc-line-2);background:rgba(124,92,255,.12);
  font-size:13px;letter-spacing:.6px;color:var(--tc-purple-3);margin-bottom:26px;
}
.tc-hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--tc-gold);box-shadow:0 0 10px var(--tc-gold)}
.tc-hero h1{
  font-size:clamp(34px,5.2vw,58px);line-height:1.22;font-weight:800;letter-spacing:1px;
  max-width:760px;margin-bottom:22px;
}
.tc-hero h1 em{
  font-style:normal;
  background:var(--tc-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.tc-hero p{max-width:600px;color:var(--tc-text-2);font-size:17px;margin-bottom:36px}
.tc-btns{display:flex;gap:16px;flex-wrap:wrap}
.tc-btn{
  display:inline-flex;align-items:center;gap:9px;padding:14px 30px;border-radius:13px;
  font-size:16px;font-weight:600;transition:.25s;border:1px solid transparent;
}
.tc-btn-main{color:#140d2e;background:var(--tc-grad);box-shadow:0 12px 30px rgba(124,92,255,.34)}
.tc-btn-main:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(124,92,255,.46)}
.tc-btn-ghost{color:var(--tc-text);border-color:var(--tc-line-2);background:rgba(124,92,255,.08)}
.tc-btn-ghost:hover{background:rgba(124,92,255,.18);border-color:var(--tc-purple)}
/* hero stats strip */
.tc-stats{
  position:relative;z-index:3;margin-top:-64px;
}
.tc-stats-inner{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:linear-gradient(180deg,rgba(30,23,64,.92),rgba(23,17,48,.92));
  border:1px solid var(--tc-line-2);border-radius:var(--tc-radius);
  backdrop-filter:blur(10px);box-shadow:var(--tc-shadow);overflow:hidden;
}
.tc-stat{padding:26px 18px;text-align:center;position:relative}
.tc-stat + .tc-stat::before{
  content:"";position:absolute;left:0;top:22%;height:56%;width:1px;
  background:linear-gradient(180deg,transparent,var(--tc-line-2),transparent);
}
.tc-stat b{
  display:block;font-size:30px;font-weight:800;
  background:var(--tc-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.tc-stat span{font-size:13.5px;color:var(--tc-text-2)}

/* ---------- section basics ---------- */
.tc-section{padding:88px 0}
.tc-section.tc-alt{background:linear-gradient(180deg,rgba(23,17,48,.55),rgba(15,11,33,0))}
.tc-sec-head{text-align:center;max-width:720px;margin:0 auto 54px}
.tc-sec-head .tc-kicker{
  display:inline-block;font-size:13px;letter-spacing:3px;text-transform:uppercase;
  color:var(--tc-gold);margin-bottom:12px;
}
.tc-sec-head h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;letter-spacing:.5px;margin-bottom:14px}
.tc-sec-head h2 em{font-style:normal;background:var(--tc-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.tc-sec-head p{color:var(--tc-text-2);font-size:15.5px}

/* ---------- feature cards ---------- */
.tc-features{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.tc-feature{
  background:linear-gradient(180deg,var(--tc-bg-3),var(--tc-bg-2));
  border:1px solid var(--tc-line);border-radius:var(--tc-radius);
  padding:32px 26px;transition:.3s;position:relative;overflow:hidden;
}
.tc-feature::before{
  content:"";position:absolute;inset:0 0 auto 0;height:3px;opacity:0;transition:.3s;
  background:var(--tc-grad);
}
.tc-feature:hover{transform:translateY(-6px);border-color:var(--tc-line-2);box-shadow:var(--tc-shadow)}
.tc-feature:hover::before{opacity:1}
.tc-feature .tc-ico{
  width:54px;height:54px;border-radius:15px;display:flex;align-items:center;justify-content:center;
  background:rgba(124,92,255,.14);border:1px solid var(--tc-line-2);margin-bottom:20px;
}
.tc-feature .tc-ico svg{width:26px;height:26px;stroke:var(--tc-purple-2);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.tc-feature h3{font-size:18px;margin-bottom:10px}
.tc-feature p{font-size:14px;color:var(--tc-text-2)}

/* ---------- game cards ---------- */
.tc-games{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tc-game{
  border-radius:var(--tc-radius);overflow:hidden;position:relative;
  border:1px solid var(--tc-line);background:var(--tc-bg-2);
  transition:.3s;display:block;
}
.tc-game:hover{transform:translateY(-6px);border-color:var(--tc-line-2);box-shadow:var(--tc-shadow)}
.tc-game .tc-game-pic{position:relative;overflow:hidden}
.tc-game .tc-game-pic img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:.5s}
.tc-game:hover .tc-game-pic img{transform:scale(1.06)}
.tc-game .tc-game-pic::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 52%,rgba(15,11,33,.88));
}
.tc-game-tag{
  position:absolute;top:14px;left:14px;z-index:2;padding:5px 13px;border-radius:999px;
  font-size:12.5px;color:var(--tc-gold);background:rgba(15,11,33,.72);
  border:1px solid rgba(240,193,92,.4);
}
.tc-game-body{padding:20px 22px 24px;position:relative}
.tc-game-body h3{font-size:19px;margin-bottom:8px}
.tc-game-body p{font-size:14px;color:var(--tc-text-2);margin-bottom:14px}
.tc-game-more{font-size:13.5px;color:var(--tc-purple-2);display:inline-flex;align-items:center;gap:6px}
.tc-game-more::after{content:"→";transition:.25s}
.tc-game:hover .tc-game-more::after{transform:translateX(4px)}

/* ---------- category quick links ---------- */
.tc-quick{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.tc-quick a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 24px;border-radius:14px;border:1px solid var(--tc-line);
  background:rgba(124,92,255,.07);font-size:15.5px;transition:.25s;
}
.tc-quick a:hover{background:rgba(124,92,255,.16);border-color:var(--tc-line-2);transform:translateY(-3px)}
.tc-quick a b{font-weight:600}
.tc-quick a i{font-style:normal;color:var(--tc-gold)}

/* ---------- news cards ---------- */
.tc-news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tc-news-card{
  border-radius:var(--tc-radius);overflow:hidden;border:1px solid var(--tc-line);
  background:linear-gradient(180deg,var(--tc-bg-3),var(--tc-bg-2));transition:.3s;display:block;
}
.tc-news-card:hover{transform:translateY(-6px);border-color:var(--tc-line-2);box-shadow:var(--tc-shadow)}
.tc-news-card .tc-news-pic{overflow:hidden}
.tc-news-card .tc-news-pic img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:.5s}
.tc-news-card:hover .tc-news-pic img{transform:scale(1.05)}
.tc-news-body{padding:22px 24px 26px}
.tc-news-meta{display:flex;align-items:center;gap:14px;font-size:12.5px;color:var(--tc-text-3);margin-bottom:12px}
.tc-news-meta em{
  font-style:normal;color:var(--tc-purple-2);padding:3px 10px;border-radius:999px;
  background:rgba(124,92,255,.13);border:1px solid var(--tc-line);
}
.tc-news-body h3{font-size:17px;line-height:1.5;margin-bottom:10px}
.tc-news-card:hover h3{color:var(--tc-purple-3)}
.tc-news-body p{font-size:13.5px;color:var(--tc-text-2)}

/* ---------- FAQ ---------- */
.tc-faq{max-width:860px;margin:0 auto;display:grid;gap:14px}
.tc-faq details{
  border:1px solid var(--tc-line);border-radius:14px;background:rgba(124,92,255,.06);
  overflow:hidden;transition:.25s;
}
.tc-faq details[open]{border-color:var(--tc-line-2);background:rgba(124,92,255,.1)}
.tc-faq summary{
  cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;
  gap:16px;padding:18px 24px;font-size:16px;font-weight:600;
}
.tc-faq summary::-webkit-details-marker{display:none}
.tc-faq summary::after{
  content:"+";flex-shrink:0;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-weight:400;
  color:var(--tc-gold);border:1px solid var(--tc-line-2);transition:.3s;font-size:17px;
}
.tc-faq details[open] summary::after{transform:rotate(45deg);background:rgba(240,193,92,.14)}
.tc-faq .tc-faq-a{padding:0 24px 20px;font-size:14.5px;color:var(--tc-text-2)}

/* ---------- CTA band ---------- */
.tc-cta{
  border:1px solid var(--tc-line-2);border-radius:22px;position:relative;overflow:hidden;
  background:
    radial-gradient(34rem 20rem at 88% -18%,rgba(240,193,92,.18),transparent 60%),
    radial-gradient(40rem 24rem at 6% 118%,rgba(124,92,255,.3),transparent 62%),
    linear-gradient(180deg,var(--tc-bg-3),var(--tc-bg-2));
  padding:58px 54px;display:flex;align-items:center;justify-content:space-between;gap:36px;
}
.tc-cta h2{font-size:clamp(23px,2.8vw,32px);font-weight:800;margin-bottom:10px}
.tc-cta p{color:var(--tc-text-2);font-size:15px;max-width:560px}
.tc-cta .tc-btns{flex-shrink:0}

/* ---------- page hero (inner pages) ---------- */
.tc-page-hero{
  padding:74px 0 58px;text-align:center;position:relative;
  background:linear-gradient(180deg,rgba(30,23,64,.85),rgba(15,11,33,.2));
  border-bottom:1px solid var(--tc-line);
}
.tc-page-hero h1{font-size:clamp(28px,3.8vw,42px);font-weight:800;margin-bottom:14px}
.tc-page-hero p{color:var(--tc-text-2);max-width:640px;margin:0 auto}
.tc-crumb{font-size:13px;color:var(--tc-text-3);margin-bottom:16px}
.tc-crumb a:hover{color:var(--tc-purple-2)}
.tc-crumb span{margin:0 7px;color:var(--tc-text-3)}

/* ---------- steps (HowTo) ---------- */
.tc-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step}
.tc-step{
  position:relative;padding:30px 24px;border-radius:var(--tc-radius);
  border:1px solid var(--tc-line);background:linear-gradient(180deg,var(--tc-bg-3),var(--tc-bg-2));
}
.tc-step::before{
  counter-increment:step;content:"0" counter(step);
  display:block;font-size:26px;font-weight:800;margin-bottom:14px;
  background:var(--tc-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.tc-step h3{font-size:17px;margin-bottom:9px}
.tc-step p{font-size:13.5px;color:var(--tc-text-2)}

/* ---------- table ---------- */
.tc-table-wrap{overflow-x:auto;border:1px solid var(--tc-line);border-radius:16px}
.tc-table{width:100%;border-collapse:collapse;min-width:640px;font-size:14.5px}
.tc-table th{
  text-align:left;padding:15px 22px;color:var(--tc-gold);font-weight:600;
  background:rgba(124,92,255,.12);border-bottom:1px solid var(--tc-line-2);white-space:nowrap;
}
.tc-table td{padding:14px 22px;color:var(--tc-text-2);border-bottom:1px solid var(--tc-line)}
.tc-table tr:last-child td{border-bottom:none}
.tc-table tbody tr:hover{background:rgba(124,92,255,.06)}
.tc-table td strong{color:var(--tc-text)}

/* ---------- article ---------- */
.tc-article{max-width:840px;margin:0 auto}
.tc-article-meta{
  display:flex;flex-wrap:wrap;gap:18px;font-size:13.5px;color:var(--tc-text-3);
  padding-bottom:24px;border-bottom:1px solid var(--tc-line);margin-bottom:32px;
}
.tc-article h2{font-size:23px;margin:38px 0 16px;padding-left:16px;position:relative}
.tc-article h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;
  background:var(--tc-grad);
}
.tc-article p{color:var(--tc-text-2);margin-bottom:16px}
.tc-article p strong{color:var(--tc-text)}
.tc-article blockquote{
  border-left:3px solid var(--tc-gold);background:rgba(240,193,92,.07);
  padding:18px 24px;border-radius:0 14px 14px 0;color:var(--tc-text-2);
  margin:22px 0;font-size:14.5px;
}
.tc-article ul.tc-list{display:grid;gap:10px;margin:0 0 18px}
.tc-article ul.tc-list li{
  color:var(--tc-text-2);padding-left:26px;position:relative;font-size:14.5px;
}
.tc-article ul.tc-list li::before{
  content:"";position:absolute;left:6px;top:10px;width:7px;height:7px;border-radius:2px;
  background:var(--tc-grad);transform:rotate(45deg);
}
.tc-article img{border-radius:16px;border:1px solid var(--tc-line);margin:24px 0}

/* ---------- contact ---------- */
.tc-contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.tc-contact-card{
  border:1px solid var(--tc-line);border-radius:var(--tc-radius);padding:32px 28px;
  background:linear-gradient(180deg,var(--tc-bg-3),var(--tc-bg-2));transition:.3s;
}
.tc-contact-card:hover{transform:translateY(-5px);border-color:var(--tc-line-2);box-shadow:var(--tc-shadow)}
.tc-contact-card h3{font-size:17px;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.tc-contact-card h3 i{width:10px;height:10px;border-radius:3px;background:var(--tc-grad);transform:rotate(45deg);flex-shrink:0}
.tc-contact-card p{font-size:14.5px;color:var(--tc-text-2);word-break:break-all}
.tc-contact-card a{color:var(--tc-purple-2)}
.tc-contact-card a:hover{color:var(--tc-gold)}

/* ---------- keybar (internal link matrix) ---------- */
.tc-keybar{border-top:1px solid var(--tc-line);border-bottom:1px solid var(--tc-line);background:rgba(23,17,48,.6)}
.tc-keybar .tc-container{display:flex;flex-wrap:wrap;gap:10px 22px;padding:18px 0;font-size:13.5px;color:var(--tc-text-3);align-items:center}
.tc-keybar b{color:var(--tc-text-2);font-weight:600}
.tc-keybar a{color:var(--tc-text-2);transition:.2s}
.tc-keybar a:hover{color:var(--tc-gold)}

/* ---------- footer ---------- */
.tc-footer{background:#0b0817;border-top:1px solid var(--tc-line);margin-top:0}
.tc-footer-main{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:44px;padding:64px 0 48px;
}
.tc-footer-brand img{height:44px;margin-bottom:18px}
.tc-footer-brand p{font-size:13.5px;color:var(--tc-text-2);max-width:320px;margin-bottom:16px}
.tc-footer-brand .tc-footer-mail{font-size:13.5px;color:var(--tc-text-2);display:grid;gap:6px}
.tc-footer-brand .tc-footer-mail a{color:var(--tc-purple-2)}
.tc-footer-brand .tc-footer-mail a:hover{color:var(--tc-gold)}
.tc-footer h4{font-size:15px;margin-bottom:18px;color:var(--tc-text);letter-spacing:.5px}
.tc-footer ul{display:grid;gap:10px}
.tc-footer ul a{font-size:13.5px;color:var(--tc-text-2);transition:.2s}
.tc-footer ul a:hover{color:var(--tc-purple-2)}
.tc-foot-kw{
  border-top:1px solid var(--tc-line);padding:20px 0;font-size:12.5px;color:var(--tc-text-3);
  line-height:2;display:flex;flex-wrap:wrap;gap:4px 18px;
}
.tc-foot-kw a{color:var(--tc-text-3)}
.tc-foot-kw a:hover{color:var(--tc-purple-2)}
.tc-foot-copy{
  border-top:1px solid var(--tc-line);padding:20px 0 26px;text-align:center;
  font-size:12.5px;color:var(--tc-text-3);
}
.tc-foot-copy a{color:var(--tc-text-3)}
.tc-foot-copy a:hover{color:var(--tc-purple-2)}

/* ---------- 404 ---------- */
.tc-404{
  min-height:64vh;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:80px 0;
}
.tc-404 b{
  font-size:clamp(80px,14vw,150px);font-weight:800;line-height:1;
  background:var(--tc-grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.tc-404 h1{font-size:22px;margin:20px 0 12px}
.tc-404 p{color:var(--tc-text-2);margin-bottom:32px;font-size:14.5px}

/* ---------- reveal on scroll ---------- */
.tc-reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.tc-reveal.tc-in{opacity:1;transform:none}

/* ---------- back to top ---------- */
.tc-top{
  position:fixed;right:22px;bottom:26px;z-index:70;width:46px;height:46px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  color:#140d2e;background:var(--tc-grad);box-shadow:0 10px 26px rgba(124,92,255,.4);
  opacity:0;visibility:hidden;transition:.3s;border:none;
}
.tc-top.tc-show{opacity:1;visibility:visible}
.tc-top svg{width:20px;height:20px;stroke:#140d2e;stroke-width:2.2;fill:none;stroke-linecap:round;stroke-linejoin:round}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .tc-features{grid-template-columns:repeat(2,1fr)}
  .tc-games{grid-template-columns:repeat(2,1fr)}
  .tc-news-grid{grid-template-columns:repeat(2,1fr)}
  .tc-steps{grid-template-columns:repeat(2,1fr)}
  .tc-quick{grid-template-columns:repeat(2,1fr)}
  .tc-contact-grid{grid-template-columns:repeat(2,1fr)}
  .tc-footer-main{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:860px){
  .tc-nav{
    position:fixed;top:0;right:-82%;width:min(320px,82vw);height:100vh;z-index:80;
    flex-direction:column;align-items:stretch;gap:6px;padding:96px 26px 26px;
    background:rgba(15,11,33,.98);border-left:1px solid var(--tc-line-2);
    transition:right .32s ease;margin-left:0;
  }
  .tc-nav.tc-open{right:0}
  .tc-nav a{padding:13px 16px;font-size:16px}
  .tc-burger{display:block;margin-left:auto;z-index:90}
  .tc-header-cta{display:none}
  .tc-cta{flex-direction:column;text-align:center;padding:44px 30px}
  .tc-cta .tc-btns{justify-content:center}
}
@media (max-width:680px){
  .tc-hero{min-height:540px}
  .tc-hero .tc-container{padding:70px 0 100px}
  .tc-section{padding:62px 0}
  .tc-stats-inner{grid-template-columns:repeat(2,1fr)}
  .tc-stat + .tc-stat::before{display:none}
  .tc-stat{border-top:1px solid var(--tc-line)}
  .tc-stat:nth-child(-n+2){border-top:none}
  .tc-games{grid-template-columns:1fr}
  .tc-news-grid{grid-template-columns:1fr}
  .tc-features{grid-template-columns:1fr}
  .tc-steps{grid-template-columns:1fr}
  .tc-quick{grid-template-columns:1fr}
  .tc-contact-grid{grid-template-columns:1fr}
  .tc-footer-main{grid-template-columns:1fr;gap:30px;padding:48px 0 36px}
  .tc-topbar .tc-container{justify-content:center}
  .tc-topbar .tc-topbar-hide{display:none}
}