/* 7К Казино — 7k4832.casino. Концепт: фотолаборатория, тёмная комната под safelight.
   Палитра: угольная база #0c0a0c, красный safelight #d7263d, бумага #ece7e2. Префикс .drkr- */

:root{
  --base:#0c0a0c;
  --base2:#141114;
  --base3:#1b171b;
  --edge:#2a242a;
  --edge2:#413841;
  --paper:#ece7e2;
  --paper-dim:#9d938d;
  --safe:#d7263d;
  --safe-soft:rgba(215,38,61,.14);
  --didone:'Bodoni Moda', 'Playfair Display', Georgia, serif;
  --grotesk:'Work Sans', 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 620px at 88% -12%, rgba(215,38,61,.13), transparent 64%),
    radial-gradient(760px 500px at -6% 30%, rgba(215,38,61,.06), transparent 62%),
    var(--base);
  color:var(--paper);
  font:400 17px/1.66 var(--grotesk);
}
img{max-width:100%;display:block}
a{color:var(--safe);text-decoration:none}
a:hover{color:var(--paper)}

h1,h2,h3{font-family:var(--didone);font-weight:500;margin:0;letter-spacing:.005em}
h1{font-size:clamp(29px,4.3vw,50px);line-height:1.14}
h2{font-size:clamp(24px,2.9vw,35px);line-height:1.2}
h3{font-size:19px;line-height:1.32;font-weight:600}
p{margin:0 0 14px}

.drkr-skip{position:absolute;left:-9999px}
.drkr-skip:focus{left:14px;top:12px;z-index:40;background:var(--safe);color:#0c0a0c;padding:10px 15px}

/* ---------- шапка ---------- */
.drkr-top{
  display:flex;align-items:center;gap:20px;
  padding:14px clamp(16px,4.5vw,60px);
  border-bottom:1px solid var(--edge);
  background:rgba(12,10,12,.9);
  backdrop-filter:blur(8px);
  position:sticky;top:0;z-index:30;
}
.drkr-mark{display:flex;align-items:center;gap:11px;color:var(--paper)}
.drkr-mark svg{width:36px;height:36px;flex:none}
.drkr-mark__t{font-family:var(--didone);font-size:24px;line-height:1;display:flex;flex-direction:column;gap:4px}
.drkr-mark__s{font-family:var(--grotesk);font-size:9.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--paper-dim);font-weight:500}
.drkr-menu{display:flex;gap:19px;margin-left:auto;font-size:14.5px}
.drkr-menu a{color:var(--paper-dim);padding:6px 0;border-bottom:1px solid transparent}
.drkr-menu a:hover{color:var(--paper);border-bottom-color:var(--safe)}

.drkr-btn{
  display:inline-block;
  background:var(--safe);color:#100c0e;
  font-weight:600;font-size:16px;
  padding:15px 28px;border-radius:0;
  border:1px solid var(--safe);
  min-height:48px;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease;
}
.drkr-btn:hover{color:#100c0e;box-shadow:0 0 30px -8px rgba(215,38,61,.9)}
.drkr-btn--sm{padding:11px 18px;font-size:14.5px;flex:none;min-height:44px}
.drkr-btn--line{background:transparent;color:var(--paper);border-color:var(--edge2)}
.drkr-btn--line:hover{border-color:var(--safe);box-shadow:none;color:var(--paper)}

/* ---------- каркас секций ---------- */
main>section{padding:clamp(44px,5.6vw,84px) clamp(16px,4.5vw,60px);max-width:1240px;margin:0 auto;border-top:1px solid var(--edge)}
.drkr-hero{border-top:0}
.drkr-cap{max-width:840px;margin-bottom:32px}
.drkr-over{
  font-size:11px;letter-spacing:.24em;text-transform:uppercase;
  color:var(--safe);margin:0 0 11px;font-weight:600;
  display:flex;align-items:center;gap:9px;
}
.drkr-over::after{content:"";height:1px;flex:1;background:linear-gradient(90deg,var(--safe),transparent)}
.drkr-lead{color:var(--paper-dim);font-size:17px;margin-top:13px}
.drkr-fine{color:var(--paper-dim);font-size:15px;margin-top:22px;padding-left:15px;border-left:2px solid var(--safe)}

/* ---------- герой ---------- */
.drkr-hero__row{display:grid;grid-template-columns:1.4fr .78fr;gap:clamp(22px,3.8vw,54px);align-items:center}
.drkr-hero__lead{color:var(--paper-dim);font-size:17.5px;max-width:660px;margin-top:18px}
.drkr-hero__btns{display:flex;gap:13px;flex-wrap:wrap;margin:26px 0 28px}
.drkr-strip{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;padding:0;margin:0;background:var(--edge)}
.drkr-strip li{background:var(--base2);padding:15px 14px;font-size:13.5px;color:var(--paper-dim)}
.drkr-strip span{display:block;font-family:var(--didone);font-size:23px;color:var(--paper);margin-bottom:4px;font-weight:500}
.drkr-hero__frame svg{width:100%;height:auto}

/* ---------- контрольный лист ---------- */
.drkr-sheet{
  display:grid;grid-template-columns:repeat(5,1fr);gap:1px;
  background:var(--edge);border:1px solid var(--edge);margin-top:34px;
}
.drkr-sheet div{background:var(--base);padding:17px 15px}
.drkr-sheet span{display:block;font-family:var(--didone);font-size:26px;color:var(--safe);margin-bottom:3px}
.drkr-sheet p{margin:0;font-size:13px;color:var(--paper-dim);letter-spacing:.05em}

/* ---------- сетки карточек ---------- */
.drkr-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.drkr-grid--3{grid-template-columns:repeat(3,1fr)}
.drkr-grid--2{grid-template-columns:repeat(2,1fr)}
.drkr-card{
  background:var(--base2);border:1px solid var(--edge);
  padding:20px 19px 22px;position:relative;
}
.drkr-card::before{content:"";position:absolute;left:0;top:0;width:34px;height:2px;background:var(--safe)}
.drkr-card h3{margin-bottom:8px}
.drkr-card p{margin:0;font-size:15px;color:var(--paper-dim)}
.drkr-card__meta{margin-top:10px;font-size:12.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--safe)}

/* ---------- каталог ---------- */
.drkr-tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.drkr-tile{background:var(--base2);border:1px solid var(--edge);overflow:hidden}
.drkr-tile img{width:100%;height:auto;aspect-ratio:1/1;object-fit:cover;filter:grayscale(.28) contrast(1.06)}
.drkr-tile:hover img{filter:none}
.drkr-tile__b{padding:15px 16px 18px}
.drkr-tile h3{font-size:17.5px;margin-bottom:7px}
.drkr-tile p{margin:0;font-size:14.5px;color:var(--paper-dim)}
.drkr-tile__tag{display:inline-block;margin-top:11px;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--safe);border:1px solid var(--edge2);padding:4px 9px}

/* ---------- ступени welcome ---------- */
.drkr-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--edge);border:1px solid var(--edge)}
.drkr-steps>div{background:var(--base2);padding:22px 20px}
.drkr-steps__n{font-family:var(--didone);font-size:38px;color:var(--safe);line-height:1;margin-bottom:12px}
.drkr-steps h3{margin-bottom:8px}
.drkr-steps p{margin:0;font-size:14.5px;color:var(--paper-dim)}

/* ---------- таблицы ---------- */
.drkr-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--edge)}
table{border-collapse:collapse;width:100%;min-width:620px;font-size:15px}
caption{text-align:left;padding:14px 16px;color:var(--paper-dim);font-size:14px;border-bottom:1px solid var(--edge)}
th,td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--edge)}
th{font-family:var(--grotesk);font-weight:600;font-size:12.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--safe);background:var(--base3)}
tbody tr:last-child td{border-bottom:0}
td{color:var(--paper-dim)}
td:first-child{color:var(--paper)}

/* ---------- две колонки ---------- */
.drkr-split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(20px,3.4vw,44px);align-items:start}
.drkr-panel{background:var(--base2);border:1px solid var(--edge);padding:24px 22px}
.drkr-panel h3{margin-bottom:10px}
.drkr-panel p{font-size:15px;color:var(--paper-dim)}
.drkr-list{list-style:none;padding:0;margin:0}
.drkr-list li{padding:12px 0 12px 24px;border-bottom:1px solid var(--edge);position:relative;font-size:15.5px;color:var(--paper-dim)}
.drkr-list li::before{content:"";position:absolute;left:0;top:19px;width:11px;height:1px;background:var(--safe)}
.drkr-list li:last-child{border-bottom:0}

/* ---------- доступ ---------- */
.drkr-access{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.drkr-access article{border-left:2px solid var(--edge2);padding:2px 0 2px 18px}
.drkr-access article:hover{border-left-color:var(--safe)}
.drkr-access h3{margin-bottom:8px}
.drkr-access p{margin:0;font-size:15px;color:var(--paper-dim)}

/* ---------- отзывы ---------- */
.drkr-quote{background:var(--base2);border:1px solid var(--edge);padding:24px 22px}
.drkr-quote p{font-size:15.5px;color:var(--paper);margin-bottom:16px}
.drkr-quote footer{font-size:13.5px;color:var(--paper-dim);border-top:1px solid var(--edge);padding-top:12px;letter-spacing:.05em}

/* ---------- финальный экран ---------- */
.drkr-final{background:linear-gradient(180deg,rgba(215,38,61,.1),transparent 70%),var(--base2)}
.drkr-final .drkr-btn{margin-top:22px}

/* ---------- FAQ ---------- */
.drkr-faq__list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 26px}
details{border-bottom:1px solid var(--edge);padding:4px 0}
summary{
  cursor:pointer;list-style:none;padding:14px 30px 14px 0;position:relative;
  font-family:var(--didone);font-size:18.5px;color:var(--paper);min-height:46px;
}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:4px;top:13px;color:var(--safe);font-family:var(--grotesk);font-size:21px}
details[open] summary::after{content:"\2013"}
details p{font-size:15px;color:var(--paper-dim);padding:0 0 14px}

/* ---------- заметка автора и подвал ---------- */
.drkr-author{background:var(--base2)}
.drkr-author p{color:var(--paper-dim);font-size:15.5px;max-width:900px}
.drkr-warn{
  border:1px solid var(--safe);background:var(--safe-soft);
  padding:18px 20px;margin-top:26px;font-size:15px;color:var(--paper);
}
.drkr-foot{
  border-top:1px solid var(--edge);padding:36px clamp(16px,4.5vw,60px) 46px;
  max-width:1240px;margin:0 auto;color:var(--paper-dim);font-size:14.5px;
}
.drkr-foot__row{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:26px}
.drkr-foot h3{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--paper);margin-bottom:11px;font-family:var(--grotesk);font-weight:600}
.drkr-foot p{font-size:14.5px}
.drkr-foot__end{margin-top:28px;padding-top:18px;border-top:1px solid var(--edge);font-size:13.5px}

/* ---------- адаптив ---------- */
@media(max-width:1080px){
  .drkr-grid,.drkr-tiles{grid-template-columns:repeat(3,1fr)}
  .drkr-steps{grid-template-columns:repeat(2,1fr)}
  .drkr-sheet{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:860px){
  .drkr-hero__row,.drkr-split{grid-template-columns:1fr}
  .drkr-hero__frame{max-width:340px}
  .drkr-grid,.drkr-grid--3,.drkr-tiles,.drkr-access{grid-template-columns:repeat(2,1fr)}
  .drkr-menu{display:none}
  .drkr-faq__list{grid-template-columns:1fr}
}
@media(max-width:620px){
  body{font-size:16px}
  .drkr-grid,.drkr-grid--3,.drkr-grid--2,.drkr-tiles,.drkr-access,.drkr-steps,.drkr-sheet,.drkr-strip{grid-template-columns:1fr}
  main>section{padding:36px 16px}
  .drkr-btn{width:100%;text-align:center}
  .drkr-foot__row{grid-template-columns:1fr}
}