/* moraine — ледниковая морена, ns: mrn- */

:root{
  --mrn-till:#d5d2cb;
  --mrn-till-pale:#e6e4df;
  --mrn-boulder:#5a5f63;
  --mrn-boulder-dark:#3d4245;
  --mrn-melt:#4e93a6;
  --mrn-melt-deep:#2f6d7e;
  --mrn-sand:#c2beb4;
}

*{box-sizing:border-box}

body{
  margin:0;
  background:var(--mrn-till);
  color:var(--mrn-boulder-dark);
  font-family:"Merriweather Sans",Verdana,sans-serif;
  font-size:16.5px;
  line-height:1.72;
  -webkit-text-size-adjust:100%;
}

.mrn-hold{max-width:1020px;margin:0 auto;padding:0 24px}

/* ——— гряда-разделитель: валуны разного калибра ——— */
.mrn-ridge{
  height:26px;
  background:
    radial-gradient(circle at 6% 100%, var(--mrn-boulder) 0 13px, transparent 13px),
    radial-gradient(circle at 15% 100%, var(--mrn-sand) 0 8px, transparent 8px),
    radial-gradient(circle at 23% 100%, var(--mrn-boulder) 0 11px, transparent 11px),
    radial-gradient(circle at 33% 100%, var(--mrn-melt) 0 6px, transparent 6px),
    radial-gradient(circle at 41% 100%, var(--mrn-sand) 0 12px, transparent 12px),
    radial-gradient(circle at 52% 100%, var(--mrn-boulder) 0 9px, transparent 9px),
    radial-gradient(circle at 61% 100%, var(--mrn-melt) 0 13px, transparent 13px),
    radial-gradient(circle at 71% 100%, var(--mrn-sand) 0 7px, transparent 7px),
    radial-gradient(circle at 80% 100%, var(--mrn-boulder) 0 12px, transparent 12px),
    radial-gradient(circle at 90% 100%, var(--mrn-sand) 0 9px, transparent 9px),
    radial-gradient(circle at 97% 100%, var(--mrn-melt) 0 6px, transparent 6px);
  background-repeat:no-repeat;
}

/* ——— шапка ——— */
.mrn-cap{
  background:var(--mrn-boulder-dark);
  color:var(--mrn-till-pale);
  padding:16px 0 12px;
}
.mrn-cap .mrn-hold{display:flex;justify-content:space-between;align-items:baseline;gap:14px;flex-wrap:wrap}
.mrn-sign{
  font-family:"Arsenal SC",Verdana,sans-serif;
  font-size:22px;
  letter-spacing:.1em;
}
.mrn-sign span{color:var(--mrn-melt)}
.mrn-capnote{font-size:13px;color:#a9aeb1}

/* ——— герой ——— */
.mrn-head{
  background:
    radial-gradient(ellipse at 88% 8%, rgba(78,147,166,.22) 0 32%, transparent 33%),
    radial-gradient(ellipse at 12% 92%, rgba(90,95,99,.16) 0 28%, transparent 29%),
    var(--mrn-till-pale);
  padding:46px 0 38px;
  border-radius:0 0 78px 26px;
}
.mrn-head h1{
  font-family:"Arsenal SC",Verdana,sans-serif;
  font-weight:700;
  font-size:40px;
  line-height:1.18;
  margin:0 0 18px;
  max-width:20ch;
  color:var(--mrn-boulder-dark);
}
.mrn-intro{font-size:18.5px;max-width:68ch;margin:0 0 30px;color:#474c50}

/* ——— KPI: слои валунов ——— */
.mrn-layers{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:12px;
  margin:0 0 28px;
}
.mrn-stone{
  background:var(--mrn-till);
  border:2px solid var(--mrn-boulder);
  padding:16px 16px 18px;
}
.mrn-stone:nth-child(1){border-radius:34px 12px 30px 10px}
.mrn-stone:nth-child(2){border-radius:12px 32px 10px 28px}
.mrn-stone:nth-child(3){border-radius:28px 28px 8px 30px}
.mrn-stone:nth-child(4){border-radius:10px 26px 34px 12px}
.mrn-stone:nth-child(5){border-radius:30px 10px 14px 32px;background:var(--mrn-melt);border-color:var(--mrn-melt-deep);color:#f2f7f8}
.mrn-stone dt{
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  opacity:.72;
  margin:0 0 7px;
}
.mrn-stone dd{
  margin:0;
  font-family:"Arsenal SC",Verdana,sans-serif;
  font-size:25px;
  line-height:1.14;
}
.mrn-stone dd i{display:block;font-style:normal;font-size:12.5px;font-family:"Merriweather Sans",sans-serif;opacity:.78;margin-top:6px;line-height:1.45}

/* ——— кнопка ——— */
.mrn-go{
  display:inline-block;
  background:var(--mrn-melt-deep);
  color:#eef5f7;
  font-family:"Arsenal SC",Verdana,sans-serif;
  font-size:19px;
  letter-spacing:.05em;
  padding:16px 36px;
  border-radius:28px 9px 28px 9px;
  text-decoration:none;
  border:2px solid var(--mrn-boulder-dark);
}
.mrn-go:hover{background:var(--mrn-boulder-dark);border-color:var(--mrn-melt-deep)}
.mrn-sub{display:block;margin-top:11px;font-size:13px;color:#5c6266}

/* ——— секции со скатанным краем ——— */
.mrn-bed{
  background:var(--mrn-till-pale);
  border-radius:8px 46px 8px 46px;
  padding:30px 32px 16px;
  margin:26px 0;
  border-left:5px solid var(--mrn-boulder);
}
.mrn-bed:nth-of-type(even){
  border-radius:46px 8px 46px 8px;
  border-left:0;
  border-right:5px solid var(--mrn-melt);
  background:var(--mrn-till);
  box-shadow:inset 0 0 0 1px var(--mrn-sand);
}
.mrn-bed h2{
  font-family:"Arsenal SC",Verdana,sans-serif;
  font-weight:700;
  font-size:28px;
  line-height:1.22;
  margin:0 0 4px;
  color:var(--mrn-boulder-dark);
}
.mrn-tag{
  font-size:11.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--mrn-melt-deep);
  margin:0 0 16px;
}
.mrn-bed h3{
  font-family:"Arsenal SC",Verdana,sans-serif;
  font-size:20px;
  margin:24px 0 8px;
  color:#3a4143;
}
.mrn-bed p{margin:0 0 14px;max-width:76ch}
.mrn-bed ol{margin:0 0 16px;padding-left:22px;max-width:76ch}
.mrn-bed ol li{margin-bottom:9px}
.mrn-bed ol li::marker{color:var(--mrn-melt-deep);font-family:"Arsenal SC",sans-serif}
.mrn-bed ul{margin:0 0 16px;padding:0;list-style:none;max-width:76ch}
.mrn-bed ul li{position:relative;padding-left:24px;margin-bottom:9px}
.mrn-bed ul li::before{
  content:"";position:absolute;left:0;top:.62em;
  width:11px;height:9px;background:var(--mrn-boulder);
  border-radius:60% 30% 55% 35%;
}
.mrn-key{color:var(--mrn-melt-deep)}
.mrn-fig{font-family:"Arsenal SC",Verdana,sans-serif;letter-spacing:.02em}

/* ——— таблицы ——— */
.mrn-pan{overflow-x:auto;margin:0 0 18px}
table{
  border-collapse:separate;
  border-spacing:0;
  width:100%;
  min-width:540px;
  font-size:15px;
  background:var(--mrn-till-pale);
  border:2px solid var(--mrn-boulder);
  border-radius:6px 30px 6px 30px;
  overflow:hidden;
}
caption{
  caption-side:bottom;
  text-align:left;
  padding:9px 2px 0;
  font-size:12.5px;
  color:#5f6569;
  font-style:italic;
}
th,td{padding:10px 13px;text-align:left}
thead th{
  background:var(--mrn-boulder);
  color:var(--mrn-till-pale);
  font-family:"Arsenal SC",Verdana,sans-serif;
  font-weight:400;
  font-size:14px;
  letter-spacing:.05em;
}
tbody td{border-top:1px solid var(--mrn-sand)}
tbody tr:nth-child(odd) td{background:rgba(213,210,203,.5)}
td.mrn-peak{color:#1f4c58;background:rgba(78,147,166,.26)}

/* ——— клуб: шесть гряд ——— */
.mrn-crest{margin:0 0 20px}
.mrn-band{
  display:flex;
  align-items:center;
  gap:16px;
  background:var(--mrn-till);
  border:2px solid var(--mrn-boulder);
  margin-bottom:8px;
  padding:12px 18px;
}
.mrn-band:nth-child(1){border-radius:22px 6px 22px 6px;margin-left:0}
.mrn-band:nth-child(2){border-radius:6px 22px 6px 22px;margin-left:14px}
.mrn-band:nth-child(3){border-radius:22px 6px 22px 6px;margin-left:28px}
.mrn-band:nth-child(4){border-radius:6px 22px 6px 22px;margin-left:42px}
.mrn-band:nth-child(5){border-radius:22px 6px 22px 6px;margin-left:56px}
.mrn-band:nth-child(6){border-radius:6px 22px 6px 22px;margin-left:70px;background:var(--mrn-melt);border-color:var(--mrn-melt-deep);color:#f0f6f7}
.mrn-band .mrn-bname{
  font-family:"Arsenal SC",Verdana,sans-serif;
  font-size:19px;
  min-width:110px;
}
.mrn-band .mrn-bpct{
  font-family:"Arsenal SC",Verdana,sans-serif;
  font-size:24px;
  min-width:70px;
}
.mrn-band .mrn-bnote{font-size:13.5px;opacity:.85}

/* ——— врезка ——— */
.mrn-note{
  background:var(--mrn-till);
  border:2px dashed var(--mrn-boulder);
  border-radius:24px 8px 24px 8px;
  padding:16px 20px;
  margin:0 0 18px;
}
.mrn-note p:last-child{margin-bottom:0}

/* ——— отзыв ——— */
.mrn-said{
  background:var(--mrn-boulder-dark);
  color:#dfe3e4;
  border-radius:40px 10px 40px 10px;
  padding:24px 30px;
  margin:22px 0;
}
.mrn-said p{margin:0 0 10px;max-width:68ch}
.mrn-said cite{
  font-style:normal;
  font-family:"Arsenal SC",Verdana,sans-serif;
  color:var(--mrn-melt);
  letter-spacing:.06em;
  font-size:15px;
}

/* ——— FAQ ——— */
details{
  background:var(--mrn-till-pale);
  border:1px solid var(--mrn-sand);
  border-radius:18px 6px 18px 6px;
  margin:0 0 9px;
}
details[open]{border-color:var(--mrn-melt);background:var(--mrn-till)}
summary{
  cursor:pointer;
  padding:13px 20px;
  font-family:"Arsenal SC",Verdana,sans-serif;
  font-size:17.5px;
  list-style:none;
  color:#33393b;
}
summary::-webkit-details-marker{display:none}
summary::after{content:" ▸";color:var(--mrn-melt-deep)}
details[open] summary::after{content:" ▾";color:var(--mrn-melt-deep)}
details p{margin:0;padding:0 20px 16px;font-size:15px;max-width:78ch}

/* ——— источники ——— */
.mrn-source{
  background:var(--mrn-boulder);
  color:#e3e6e7;
  padding:32px 0 34px;
  margin-top:28px;
}
.mrn-source h2{
  font-family:"Arsenal SC",Verdana,sans-serif;
  font-size:25px;
  margin:0 0 14px;
  color:#fff;
}
.mrn-source ol{margin:0 0 22px;padding-left:22px;max-width:80ch}
.mrn-source li{margin-bottom:9px;font-size:15px}
.mrn-source li::marker{color:var(--mrn-melt)}
.mrn-source .mrn-go{background:var(--mrn-melt);color:#1d3d46;border-color:#e3e6e7}
.mrn-source .mrn-sub{color:#c6cbcd}

/* ——— подвал ——— */
.mrn-base{
  background:var(--mrn-boulder-dark);
  color:#a8aeb1;
  padding:26px 0 36px;
  font-size:14px;
}
.mrn-base p{margin:0 0 9px;max-width:86ch}
.mrn-base .mrn-adult{
  color:var(--mrn-melt);
  font-family:"Arsenal SC",Verdana,sans-serif;
  font-size:15px;
  letter-spacing:.04em;
  margin-top:16px;
  padding-top:14px;
  border-top:1px solid #4e5457;
}

@media (max-width:640px){
  body{font-size:16px}
  .mrn-hold{padding:0 16px}
  .mrn-head{padding:30px 0 26px;border-radius:0 0 40px 16px}
  .mrn-head h1{font-size:26px;max-width:none}
  .mrn-intro{font-size:16.5px}
  .mrn-layers{grid-template-columns:1fr 1fr}
  .mrn-stone dd{font-size:21px}
  .mrn-bed{padding:22px 18px 12px;border-radius:6px 28px 6px 28px}
  .mrn-bed:nth-of-type(even){border-radius:28px 6px 28px 6px}
  .mrn-bed h2{font-size:22px}
  .mrn-band{flex-wrap:wrap;gap:8px;margin-left:0 !important;padding:11px 14px}
  .mrn-band .mrn-bname{min-width:0}
  .mrn-band .mrn-bpct{min-width:0}
  .mrn-said{padding:18px;border-radius:26px 8px 26px 8px}
  .mrn-go{padding:14px 26px;font-size:17px}
  table{font-size:14px}
  .mrn-ridge{height:18px}
}