:root{
  --border: #fff;
  --bw: 1.5px;
  --radius: 18px;
  --max: 980px;
  --pad: 18px;
  --font: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;

  --mediaMax: 520px;
}


*{ box-sizing: border-box; }

body{
  margin: 0;
  background: #000;
  color: #fff;
  font-family: var(--font);
}

.wrap{
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px var(--pad) 28px;
}


.nav{
  border: var(--bw) solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;

  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand,
.nav-link{
  color: inherit;
  text-decoration: none;
  font-size: 18px;
  font-weight: 600;
}

.brand:hover,
.nav-link:hover{
  text-decoration: underline;
}

.nav-right{
  display: flex;
  gap: 16px;
  align-items: center;
  margin-left: auto;
}


.title{
  margin: 18px 0 10px;
  font-size: clamp(56px, 9vw, 112px);
  line-height: 0.95;
  letter-spacing: -2px;
  font-weight: 800;
}


.card{
  border: var(--bw) solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 12px;
}

.le-treff-card{
  padding: 28px;
  padding-bottom: 60px;
  overflow: hidden;
}


.le-treff-panel{
  margin-top: 18px;
  border: var(--bw) solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;

  width: 100%;
  max-width: var(--panelMax);
  margin-left: auto;
  margin-right: auto;
}

.le-treff-panel summary{
  list-style: none;
  cursor: pointer;

  display: grid;
  grid-template-columns: 40px 1fr;
  align-items: center;

  padding: 16px 18px;
  font-size: 18px;
  font-weight: 600;
}

.le-treff-panel summary::-webkit-details-marker{ display: none; }

.panel-icon{
  font-size: 22px;
  line-height: 1;
  display: inline-block;
  transform-origin: 50% 50%;
  transition: transform 0.25s ease;
}

.le-treff-panel[open] .panel-icon{
  transform: rotate(180deg);
}

.panel-label{
  text-align: center;
}

.le-treff-panel .panel-content{
  padding: 18px 18px 22px;
  font-size: 18px;
  line-height: 1.4;
}

.le-treff-panel .panel-content p{
  margin: 0;
}


.le-treff-card,
.le-treff-panel{
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}


.video-gallery{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;

  width: 100%;
  padding: 24px;
}

.video-gallery video{
  width: 100%;
  height: auto;
  display: block;

  border: var(--bw);
  border-radius: 12px;
  object-fit: cover;
}


@media (max-width: 520px){
  .nav-right{
    gap: 10px;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
  }

  .nav-right::-webkit-scrollbar{ height: 0; }
}

@media (max-width: 900px){
  .video-gallery{
    grid-template-columns: 1fr;
  }
}