/* ==========================================================================
   Top Ball Games — orbital kinetic design system
   Base: anthracite / slate.  Accent: brushed gunmetal silver.
   ========================================================================== */

:root{
  --anthracite:#12151a;
  --slate-900:#171b22;
  --slate-800:#1d222b;
  --slate-700:#242b36;
  --slate-600:#2d3542;
  --rule:#3a4453;
  --rule-soft:#2a323d;

  --gunmetal:#9ba6b3;
  --gunmetal-deep:#6e7987;
  --gunmetal-lit:#cfd6de;

  --ink:#e6eaef;
  --ink-soft:#b3bcc7;
  --ink-mute:#828d9b;

  --bronze:#c9a86c;
  --clay:#b26f62;

  --pad:clamp(18px,4vw,34px);
  --shell:1180px;
  --radius:3px;

  --display:"Space Grotesk","Helvetica Neue",Arial,sans-serif;
  --body:"IBM Plex Sans","Segoe UI",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--anthracite);
  color:var(--ink);
  font-family:var(--body);
  font-size:16.5px;
  line-height:1.72;
  letter-spacing:.005em;
}
img{max-width:100%;display:block;}
a{color:var(--gunmetal-lit);text-decoration:none;}
a:hover{color:#fff;}
h1,h2,h3,h4{font-family:var(--display);font-weight:600;line-height:1.14;letter-spacing:-.018em;margin:0 0 .6em;}
h1{font-size:clamp(2.1rem,5.4vw,3.5rem);}
h2{font-size:clamp(1.5rem,3vw,2.1rem);}
h3{font-size:1.14rem;letter-spacing:.01em;}
p{margin:0 0 1.05em;}
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--pad);}

/* ---- signature devices ------------------------------------------------- */

/* thin orbit-ring outlines used as a background accent */
.orbitfield{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:0;}
.orbitfield span{
  position:absolute;border:1px solid var(--rule-soft);border-radius:50%;
  opacity:.85;
}
.orbitfield span::after{
  content:"";position:absolute;width:7px;height:7px;border-radius:50%;
  top:-4px;left:50%;
  background:linear-gradient(145deg,var(--gunmetal-lit),var(--gunmetal-deep));
}
.orb-a{width:520px;height:520px;top:-180px;right:-120px;}
.orb-b{width:300px;height:300px;top:60px;right:60px;border-color:var(--rule)!important;}
.orb-c{width:760px;height:760px;bottom:-460px;left:-220px;}

/* radial-line divider */
.radial-rule{
  border:0;height:1px;margin:0;
  background:linear-gradient(90deg,transparent,var(--rule) 18%,var(--rule) 82%,transparent);
  position:relative;
}
.radial-rule::after{
  content:"";position:absolute;left:50%;top:50%;width:9px;height:9px;
  transform:translate(-50%,-50%);border-radius:50%;
  background:linear-gradient(145deg,var(--gunmetal-lit),var(--gunmetal-deep));
  box-shadow:0 0 0 5px var(--anthracite);
}

/* sphere bullet list */
.sphere-list{list-style:none;margin:0 0 1.2em;padding:0;}
.sphere-list li{position:relative;padding-left:26px;margin-bottom:.62em;color:var(--ink-soft);}
.sphere-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:10px;height:10px;border-radius:50%;
  background:linear-gradient(145deg,var(--gunmetal-lit) 8%,var(--gunmetal) 45%,var(--gunmetal-deep));
}

.eyebrow{
  font-family:var(--display);font-size:.72rem;letter-spacing:.32em;text-transform:uppercase;
  color:var(--gunmetal-deep);margin:0 0 1em;display:flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;
  background:linear-gradient(145deg,var(--gunmetal-lit),var(--gunmetal-deep));flex:none;}

.lead{font-size:1.1rem;color:var(--ink-soft);max-width:62ch;}

/* ---- header ------------------------------------------------------------ */
.site-head{
  position:sticky;top:0;z-index:40;
  background:rgba(18,21,26,.94);
  border-bottom:1px solid var(--rule-soft);
  backdrop-filter:blur(8px);
}
.head-row{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:72px;}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--display);font-weight:600;
  font-size:1.02rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink);}
.brand .mark{
  width:30px;height:30px;border:1px solid var(--rule);border-radius:50%;position:relative;flex:none;
  overflow:hidden;background:var(--slate-900);
}
.brand .mark img{width:100%;height:100%;object-fit:cover;border-radius:50%;}
.brand span.txt small{display:block;font-size:.58rem;letter-spacing:.3em;color:var(--gunmetal-deep);}

.nav{display:flex;align-items:center;gap:26px;}
.nav a{
  font-family:var(--display);font-size:.82rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink-mute);padding:6px 0;position:relative;
}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ink);}
.nav a[aria-current="page"]::after{
  content:"";position:absolute;left:50%;bottom:-2px;transform:translateX(-50%);
  width:6px;height:6px;border-radius:50%;background:var(--gunmetal);
}
.nav-cta{
  font-family:var(--display);font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;
  border:1px solid var(--rule);border-radius:100px;padding:9px 20px;color:var(--ink)!important;
}
.nav-cta:hover{border-color:var(--gunmetal);background:var(--slate-800);}

.nav-toggle{
  display:none;background:none;border:1px solid var(--rule);border-radius:100px;
  color:var(--ink);font-family:var(--display);font-size:.76rem;letter-spacing:.16em;
  text-transform:uppercase;padding:9px 16px;cursor:pointer;
}
@media(max-width:900px){
  .nav-toggle{display:inline-block;}
  .nav{
    display:none;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--slate-900);border-bottom:1px solid var(--rule-soft);
    padding:8px var(--pad) 20px;
  }
  .nav.open{display:flex;}
  .nav a{padding:13px 0;border-bottom:1px solid var(--rule-soft);}
  .nav a[aria-current="page"]::after{left:auto;right:2px;bottom:50%;transform:translateY(50%);}
  .nav-cta{text-align:center;margin-top:14px;border-bottom:0!important;}
}

/* ---- hero -------------------------------------------------------------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--rule-soft);
  background:radial-gradient(120% 90% at 78% 0%,var(--slate-800),var(--anthracite) 62%);}
.hero .shell{position:relative;z-index:1;padding-block:clamp(48px,8vw,90px);}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,5vw,62px);align-items:center;}
@media(max-width:980px){.hero-grid{grid-template-columns:1fr;}}
.hero h1 em{font-style:normal;color:var(--gunmetal);}
.hero-visual{
  margin:0;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--rule-soft);
  background:var(--slate-800);
  box-shadow:0 24px 48px rgba(0,0,0,.32);
}
.hero-visual img{
  width:100%;height:auto;aspect-ratio:1/1;object-fit:cover;display:block;
}
@media(max-width:980px){.hero-visual{max-width:520px;}}
.agechip{
  display:inline-flex;align-items:center;gap:9px;border:1px solid var(--rule);
  border-radius:100px;padding:6px 15px;font-family:var(--display);font-size:.72rem;
  letter-spacing:.2em;text-transform:uppercase;color:var(--gunmetal-lit);margin-bottom:22px;
}
.agechip::before{content:"";width:9px;height:9px;border-radius:50%;
  background:linear-gradient(145deg,var(--gunmetal-lit),var(--gunmetal-deep));}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.btn{
  font-family:var(--display);font-size:.84rem;letter-spacing:.14em;text-transform:uppercase;
  padding:14px 26px;border-radius:100px;border:1px solid var(--rule);cursor:pointer;
  background:transparent;color:var(--ink);display:inline-block;transition:.18s;
}
.btn:hover{border-color:var(--gunmetal);background:var(--slate-800);color:#fff;}
.btn-solid{
  background:linear-gradient(145deg,var(--gunmetal-lit),var(--gunmetal) 55%,var(--gunmetal-deep));
  color:#15181d;border-color:transparent;font-weight:600;
}
.btn-solid:hover{color:#0d1014;filter:brightness(1.08);background:linear-gradient(145deg,#e8eef4,var(--gunmetal));}
.btn:disabled{opacity:.34;cursor:not-allowed;}

/* ---- sections ---------------------------------------------------------- */
section{position:relative;}
.band{padding-block:clamp(48px,7vw,80px);}
.band-alt{background:var(--slate-900);border-block:1px solid var(--rule-soft);}
.cols-3{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(18px,2.4vw,28px);}
.cols-2{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(18px,3vw,36px);}
@media(max-width:860px){.cols-3,.cols-2{grid-template-columns:1fr;}}

.card{
  background:var(--slate-800);border:1px solid var(--rule-soft);border-radius:var(--radius);
  padding:26px 24px;position:relative;overflow:hidden;
}
.card::before{
  content:"";position:absolute;width:150px;height:150px;border:1px solid var(--rule-soft);
  border-radius:50%;top:-84px;right:-56px;
}
.card h3{color:var(--ink);}
.card p{color:var(--ink-soft);margin-bottom:0;font-size:.97rem;}
.idx{font-family:var(--display);font-size:.72rem;letter-spacing:.26em;color:var(--gunmetal-deep);
  display:block;margin-bottom:12px;}

/* trust strip */
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--rule-soft);
  border:1px solid var(--rule-soft);border-radius:var(--radius);overflow:hidden;}
.trust div{background:var(--slate-900);padding:20px 18px;}
.trust strong{display:block;font-family:var(--display);font-size:.78rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--gunmetal-lit);margin-bottom:6px;}
.trust p{margin:0;font-size:.9rem;color:var(--ink-mute);}
@media(max-width:860px){.trust{grid-template-columns:1fr 1fr;}}
@media(max-width:520px){.trust{grid-template-columns:1fr;}}

/* prose pages */
.prose{max-width:74ch;}
.prose h2{margin-top:2.1em;}
.prose h3{margin-top:1.6em;color:var(--gunmetal-lit);}
.prose p,.prose li{color:var(--ink-soft);}
.page-head{border-bottom:1px solid var(--rule-soft);padding-block:clamp(40px,6vw,66px);
  position:relative;overflow:hidden;background:linear-gradient(180deg,var(--slate-900),var(--anthracite));}
.page-head .shell{position:relative;z-index:1;}
.page-head.page-head-visual .shell{
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(220px,.85fr);
  gap:clamp(24px,4vw,52px);align-items:center;
}
.page-head.page-head-visual .hero-visual{max-width:420px;margin-inline:auto;}
@media(max-width:860px){.page-head.page-head-visual .shell{grid-template-columns:1fr;}}

details.faq{border:1px solid var(--rule-soft);border-radius:var(--radius);background:var(--slate-800);
  padding:16px 20px;margin-bottom:12px;}
details.faq summary{cursor:pointer;font-family:var(--display);font-weight:600;color:var(--ink);
  list-style:none;display:flex;gap:12px;align-items:baseline;}
details.faq summary::-webkit-details-marker{display:none;}
details.faq summary::before{content:"";width:9px;height:9px;border-radius:50%;flex:none;
  background:linear-gradient(145deg,var(--gunmetal-lit),var(--gunmetal-deep));}
details.faq p{margin:.9em 0 .2em 21px;color:var(--ink-soft);font-size:.97rem;}

/* ---- footer ------------------------------------------------------------ */
.site-foot{background:var(--slate-900);border-top:1px solid var(--rule-soft);
  padding-block:clamp(38px,5vw,58px) 26px;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:clamp(22px,4vw,48px);}
@media(max-width:820px){.foot-grid{grid-template-columns:1fr;}}
.foot-grid h4{font-family:var(--display);font-size:.76rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--gunmetal-deep);margin-bottom:14px;}
.foot-links{list-style:none;margin:0;padding:0;}
.foot-links li{margin-bottom:9px;}
.foot-links a{color:var(--ink-soft);font-size:.95rem;}
.foot-note{color:var(--ink-mute);font-size:.93rem;max-width:52ch;}
.legalbar{margin-top:34px;padding-top:20px;border-top:1px solid var(--rule-soft);
  display:flex;flex-wrap:wrap;gap:14px 26px;justify-content:space-between;
  font-size:.86rem;color:var(--ink-mute);}
.legalbar .tag{font-family:var(--display);letter-spacing:.12em;text-transform:uppercase;font-size:.72rem;
  color:var(--gunmetal-deep);}