/* 7К Казино — 7k2xq.fun. Концепт: спелеология, карстовая пещера, свет налобника.
   Палитра: подземная тьма #0f1214 + известняк #dcd3c4 + луч налобника #ffc247. Префикс .grot- */

:root{
  --deep:#0f1214;
  --deep2:#161b1e;
  --deep3:#1d2427;
  --seam:#2b3438;
  --seam2:#465055;
  --lime:#dcd3c4;
  --dust:#9a978e;
  --lamp:#ffc247;
  --wet:#6fb3a8;
  --title:'Abril Fatface', Georgia, 'Times New Roman', serif;
  --body:'Questrial', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:
    radial-gradient(1100px 460px at 50% -14%, rgba(255,194,71,.10), transparent 66%),
    radial-gradient(760px 620px at 96% 40%, rgba(111,179,168,.055), transparent 64%),
    var(--deep);
  color:var(--lime);
  font:400 17px/1.66 var(--body);
}
svg{max-width:100%}
a{color:var(--lamp);text-decoration:none}
a:hover{color:var(--lime)}

h1,h2,h3{font-family:var(--title);font-weight:400;margin:0;letter-spacing:-.005em}
h1{font-size:clamp(29px,4.2vw,50px);line-height:1.14}
h2{font-size:clamp(24px,2.9vw,35px);line-height:1.2}
h3{font-size:19.5px;line-height:1.32}
p{margin:0 0 14px}

.grot-skip{position:absolute;left:-9999px}
.grot-skip:focus{left:14px;top:12px;z-index:9;background:var(--lamp);color:#0f1214;padding:10px 15px}

/* ---------- шапка ---------- */
.grot-bar{
  display:flex;align-items:center;gap:20px;
  padding:14px clamp(16px,4.5vw,60px);
  border-bottom:1px solid var(--seam);
  background:rgba(15,18,20,.9);
  backdrop-filter:blur(8px);
  position:sticky;top:0;z-index:20;
}
.grot-logo{display:flex;align-items:center;gap:12px;color:var(--lime)}
.grot-logo__svg{width:36px;height:36px;flex:none}
.grot-logo__t{font-family:var(--title);font-size:24px;line-height:1;display:flex;flex-direction:column;gap:5px}
.grot-logo__sub{font-family:var(--body);font-size:9.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--dust)}
.grot-nav{display:flex;gap:19px;margin-left:auto;font-size:14.5px}
.grot-nav a{color:var(--dust);padding:6px 0}
.grot-nav a:hover{color:var(--lamp)}

.grot-cta{
  display:inline-block;
  background:var(--lamp);color:#141013;
  font-size:16px;letter-spacing:.02em;
  padding:15px 28px;min-height:48px;
  clip-path:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px);
  transition:filter .2s ease,transform .2s ease;
}
.grot-cta:hover{color:#141013;filter:brightness(1.12);transform:translateY(-2px)}
.grot-cta--sm{padding:11px 18px;font-size:14px;min-height:44px;flex:none}
.grot-cta--ghost{background:transparent;color:var(--lime);box-shadow:inset 0 0 0 1px var(--seam2)}
.grot-cta--ghost:hover{color:var(--lamp);box-shadow:inset 0 0 0 1px var(--lamp);filter:none}

/* ---------- общие блоки ---------- */
section{padding:clamp(44px,5.6vw,82px) clamp(16px,4.5vw,60px);max-width:1240px;margin:0 auto}
section+section{border-top:1px solid var(--seam)}
.grot-head{max-width:840px;margin-bottom:32px}
.grot-over{font-size:11px;letter-spacing:.26em;text-transform:uppercase;color:var(--lamp);margin:0 0 13px}
.grot-sub{color:var(--dust);font-size:16.5px;margin-top:15px}
.grot-note{color:var(--dust);font-size:15.5px;margin-top:26px;padding:14px 0 0;border-top:1px dashed var(--seam2)}

/* ---------- герой ---------- */
.grot-hero{display:grid;grid-template-columns:1.4fr .82fr;gap:clamp(22px,4vw,54px);align-items:center;padding-bottom:26px}
.grot-lead{color:var(--dust);font-size:17.5px;max-width:660px}
.grot-btns{display:flex;gap:14px;flex-wrap:wrap;margin:26px 0 30px}
.grot-kpi{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:0;margin:0;font-size:13px;color:var(--dust)}
.grot-kpi li{padding:0 16px;border-left:1px solid var(--seam2)}
.grot-kpi li:first-child{padding-left:0;border-left:0}
.grot-num{font-family:var(--title);font-size:26px;color:var(--lime);display:block;margin-bottom:4px;line-height:1}
.grot-cut svg{width:100%;height:auto;filter:drop-shadow(0 8px 40px rgba(255,194,71,.14))}

.grot-chan{padding-top:0;display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--seam)}
.grot-ch{padding:22px 20px;border-right:1px solid var(--seam);background:var(--deep2)}
.grot-ch:last-child{border-right:0}
.grot-ch__t{font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--lamp);margin-bottom:11px}
.grot-ch h3{font-size:17px;margin-bottom:8px}
.grot-ch p{font-size:15px;color:var(--dust);margin:0}

.grot-strip{list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin:0;padding:0}
.grot-strip li{padding:20px 18px;font-size:12.5px;color:var(--dust);border-top:2px solid var(--seam2)}
.grot-strip li:nth-child(odd){border-top-color:var(--lamp)}
.grot-strip span{display:block;font-family:var(--title);font-size:24px;color:var(--lime);margin-bottom:5px;line-height:1}

/* ---------- welcome ---------- */
.grot-tiers{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.grot-tier{
  background:linear-gradient(174deg,var(--deep3),var(--deep2));
  padding:24px 20px 20px;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 20px),calc(100% - 20px) 100%,0 100%);
  box-shadow:inset 0 0 0 1px var(--seam);
}
.grot-tier__n{font-size:11px;letter-spacing:.24em;color:var(--dust);margin-bottom:8px}
.grot-tier__p{font-family:var(--title);font-size:40px;line-height:1;color:var(--lamp);margin:0 0 6px}
.grot-tier__cap{font-size:14.5px;color:var(--wet);margin-bottom:12px}
.grot-tier p:last-child{font-size:15px;color:var(--dust);margin:0}

/* ---------- доступ ---------- */
.grot-access{display:grid;grid-template-columns:repeat(2,1fr)}
.grot-access article{padding:24px 28px;border-top:1px solid var(--seam)}
.grot-access article:nth-child(odd){border-right:1px solid var(--seam);padding-left:0}
.grot-access article:nth-child(1),.grot-access article:nth-child(2){border-top:0;padding-top:0}
.grot-access h3{margin-bottom:10px;color:var(--lime)}
.grot-access p{color:var(--dust);font-size:16px;margin:0}

/* ---------- каталог ---------- */
.grot-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.grot-grid--3{grid-template-columns:repeat(3,1fr)}
.grot-card{
  background:var(--deep2);padding:20px 18px;
  clip-path:polygon(0 14px,14px 0,100% 0,100% 100%,0 100%);
  box-shadow:inset 0 0 0 1px var(--seam);
  transition:box-shadow .18s ease,transform .18s ease;
}
.grot-card:hover{box-shadow:inset 0 0 0 1px var(--lamp);transform:translateY(-3px)}
.grot-card h3{margin-bottom:7px;font-size:18.5px}
.grot-meta{font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--wet);margin-bottom:10px}
.grot-card p:last-child{font-size:14.5px;color:var(--dust);margin:0}

/* ---------- таблицы ---------- */
.grot-wrap{overflow-x:auto}
.grot-tab{width:100%;min-width:560px;border-collapse:collapse;font-size:15.5px}
.grot-tab th{
  text-align:left;font-weight:400;font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--dust);padding:0 14px 13px;border-bottom:1px solid var(--seam2);
}
.grot-tab td{padding:15px 14px;border-bottom:1px solid var(--seam);color:var(--dust)}
.grot-tab td:first-child{color:var(--lime)}
.grot-tab td:nth-child(3){color:var(--lamp)}
.grot-tab tr:hover td{background:var(--deep2)}

/* ---------- три шага ---------- */
.grot-steps{list-style:none;counter-reset:g;padding:0;margin:0;display:grid;grid-template-columns:repeat(3,1fr);gap:0}
.grot-steps li{counter-increment:g;padding:0 26px;border-left:2px solid var(--lamp)}
.grot-steps li::before{content:'0' counter(g);font-family:var(--title);font-size:30px;color:var(--seam2);display:block;margin-bottom:10px;line-height:1}
.grot-steps h3{margin-bottom:9px}
.grot-steps p{color:var(--dust);font-size:15.5px;margin:0}

/* ---------- турнир ---------- */
.grot-two{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(20px,3vw,46px);align-items:start}
.grot-two p{color:var(--dust);font-size:16.5px}
.grot-prize{list-style:none;padding:0;margin:0}
.grot-prize li{display:flex;justify-content:space-between;gap:16px;padding:15px 18px;font-size:15px;color:var(--lamp);background:var(--deep2);margin-bottom:6px;
  clip-path:polygon(0 0,calc(100% - 14px) 0,100% 14px,100% 100%,0 100%)}
.grot-prize span{color:var(--dust)}

/* ---------- отзывы ---------- */
.grot-rev{background:var(--deep2);padding:24px 22px;box-shadow:inset 0 0 0 1px var(--seam);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%)}
.grot-rev p{font-size:15.5px;color:var(--dust)}
.grot-stars{color:var(--lamp);letter-spacing:.3em;font-size:14px!important;margin-bottom:12px}
.grot-rev__a{font-size:12.5px;letter-spacing:.06em;color:var(--seam2)!important;margin:0}

/* ---------- финал ---------- */
.grot-final{text-align:center}
.grot-final p{color:var(--dust);max-width:660px;margin:16px auto 28px}

/* ---------- faq ---------- */
.grot-faq{display:grid;grid-template-columns:repeat(2,1fr);gap:0 36px}
.grot-faq details{border-bottom:1px solid var(--seam);padding:15px 0}
.grot-faq summary{cursor:pointer;font-size:16.5px;color:var(--lime);list-style:none;display:flex;gap:13px;align-items:baseline;min-height:44px}
.grot-faq summary::-webkit-details-marker{display:none}
.grot-faq summary::before{content:'\25B8';color:var(--lamp);flex:none}
.grot-faq details[open] summary::before{content:'\25BE'}
.grot-faq details p{color:var(--dust);font-size:15.5px;margin:10px 0 4px 26px}

/* ---------- автор ---------- */
.grot-author{max-width:920px}
.grot-author p{color:var(--dust);font-size:16px}
.grot-author h2{margin-bottom:16px}
.grot-warn{margin-top:22px;padding:18px 20px;background:var(--deep2);box-shadow:inset 0 0 0 1px var(--seam)}
.grot-warn p{margin:0;font-size:15.5px}

/* ---------- подвал ---------- */
.grot-foot{border-top:1px solid var(--seam);background:var(--deep2);padding:42px clamp(16px,4.5vw,60px) 28px}
.grot-foot__grid{max-width:1240px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.grot-foot p{font-size:14.5px;color:var(--dust)}
.grot-foot__b{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--lamp)!important;margin-bottom:10px}
.grot-foot__c{max-width:1240px;margin:26px auto 0;padding-top:18px;border-top:1px solid var(--seam);font-size:13px;color:var(--seam2)!important}

/* ---------- адаптив ---------- */
@media (max-width:1020px){
  .grot-hero{grid-template-columns:1fr}
  .grot-cut{max-width:400px;margin:0 auto}
  .grot-chan,.grot-tiers,.grot-grid,.grot-grid--3{grid-template-columns:repeat(2,1fr)}
  .grot-ch:nth-child(2){border-right:0}
  .grot-strip{grid-template-columns:repeat(2,1fr)}
  .grot-two,.grot-steps,.grot-faq,.grot-foot__grid{grid-template-columns:1fr}
  .grot-steps li{padding:0 0 0 20px;margin-bottom:24px}
  .grot-nav{display:none}
}
@media (max-width:620px){
  body{font-size:16px}
  .grot-chan,.grot-tiers,.grot-grid,.grot-grid--3,.grot-kpi,.grot-strip,.grot-access{grid-template-columns:1fr}
  .grot-ch{border-right:0;border-bottom:1px solid var(--seam)}
  .grot-kpi li{padding:12px 0;border-left:0;border-top:1px solid var(--seam2)}
  .grot-access article,.grot-access article:nth-child(odd){padding:22px 0;border-right:0}
  .grot-access article:nth-child(2){border-top:1px solid var(--seam);padding-top:22px}
  .grot-bar{padding:11px 14px;gap:10px}
  .grot-cta{width:100%;text-align:center}
  .grot-cta--sm{width:auto}
  .grot-btns{flex-direction:column}
}