:root{
  --bg0:#06060a;
  --bg1:#0b0b14;
  --card: rgba(255,255,255,.06);
  --card2: rgba(255,255,255,.10);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.68);
  --muted2: rgba(255,255,255,.50);
  --accent:#a855f7;     /* violet */
  --accent2:#22d3ee;    /* cyan-ish */
  --shadow: 0 18px 60px rgba(0,0,0,.55);
  --safeTop: env(safe-area-inset-top, 0px);
  --safeBottom: env(safe-area-inset-bottom, 0px);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  color:var(--text);
  background:
    radial-gradient(1200px 600px at 20% 10%, rgba(168,85,247,.22), transparent 55%),
    radial-gradient(900px 600px at 85% 30%, rgba(34,211,238,.14), transparent 60%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  overflow:hidden;
}

.app{
  height:100%;
  width:100%;
  position:relative;
  display:grid;
  grid-template-rows: auto 1fr auto;
}

.top{
  padding: calc(12px + var(--safeTop)) 14px 10px 14px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  pointer-events:none;
}

.progress{
  flex: 1 1 auto;
  display:grid;
  grid-auto-flow:column;
  gap:6px;
  align-items:center;
}

.seg{
  height: 3px;
  border-radius: 999px;
  background: rgba(255,255,255,.16);
  overflow:hidden;
}
.seg > i{
  display:block;
  height:100%;
  width:0%;
  background: rgba(255,255,255,.92);
  transition: width .25s ease;
}

.topRight{
  display:flex;
  gap:8px;
  pointer-events:auto;
}

.iconBtn{
  width:38px;height:38px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.22);
  color: rgba(255,255,255,.88);
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
  backdrop-filter: blur(10px);
  display:grid;
  place-items:center;
  cursor:pointer;
}
.iconBtn:hover{background: rgba(255,255,255,.06)}
.iconBtn:active{transform: translateY(1px)}

.stage{
  position:relative;
  display:grid;
  place-items:center;
  padding: 8px 14px 8px 14px;
}

.card{
  width:min(720px, 100%);
  height:min(92vh, 980px);
  border-radius: 26px;
  border: 1px solid rgba(255,255,255,.14);
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  box-shadow: var(--shadow);
  overflow:hidden;
  position:relative;
  transform: translateZ(0);
}

.card::before{
  content:"";
  position:absolute; inset:-80px;
  background:
    radial-gradient(520px 260px at 25% 15%, rgba(168,85,247,.22), transparent 60%),
    radial-gradient(520px 260px at 80% 35%, rgba(34,211,238,.16), transparent 60%);
  filter: blur(28px);
  opacity:.9;
}

.content{
  position:relative;
  height:100%;
  display:grid;
  grid-template-rows: auto 1fr auto;
  padding: 22px;
  gap: 14px;
}

.kicker{
  font-size: 12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color: var(--muted2);
}

.title{
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.08;
  font-weight: 750;
  letter-spacing:-0.02em;
}

.sub{
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
  max-width: 58ch;
}

.big{
  margin-top: 6px;
  font-size: clamp(52px, 9vw, 84px);
  line-height: 0.95;
  font-weight: 900;
  letter-spacing:-0.04em;
}

.badges{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}
.badge{
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.22);
  color: rgba(255,255,255,.80);
  font-size: 12px;
}

.hr{
  height:1px;
  background: rgba(255,255,255,.12);
  margin: 6px 0;
}

.list{
  margin: 0;
  padding-left: 18px;
  color: rgba(255,255,255,.84);
  line-height: 1.55;
}
.list li{margin: 7px 0}

.ctaRow{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  align-items:center;
}
.btn{
  border: 0;
  cursor:pointer;
  padding: 12px 14px;
  border-radius: 16px;
  color: rgba(0,0,0,.92);
  background: linear-gradient(90deg, rgba(168,85,247,1), rgba(34,211,238,1));
  font-weight: 750;
  box-shadow: 0 12px 40px rgba(168,85,247,.25);
}
.btn.secondary{
  background: rgba(255,255,255,.10);
  color: rgba(255,255,255,.92);
  border: 1px solid rgba(255,255,255,.14);
  box-shadow:none;
}
.btn:active{transform: translateY(1px)}

.imageWrap{
  position:absolute;
  inset:0;
  z-index:0;
}
.imageWrap img{
  width:100%;
  height:100%;
  object-fit: cover;
  transform: scale(1.02);
  filter: saturate(1.05) contrast(1.05);
}
.imageOverlay{
  position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(0,0,0,.15), rgba(0,0,0,.65));
}
.imageCaption{
  position:absolute;
  inset:auto 0 0 0;
  padding: 20px 22px;
  z-index:2;
}
.imageCaption .title{font-size: clamp(26px, 4vw, 40px)}
.imageCaption .sub{max-width: 70ch}

.zone{
  position:absolute;
  top:0;
  bottom:0;
  width:50%;
  border:0;
  background:transparent;
  cursor:pointer;
}
.zoneLeft{left:0}
.zoneRight{right:0}

.bottom{
  padding: 6px 14px calc(12px + var(--safeBottom)) 14px;
  display:flex;
  justify-content:center;
}
.hint{
  font-size: 12px;
  color: var(--muted2);
  background: rgba(0,0,0,.18);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 999px;
  padding: 8px 10px;
  backdrop-filter: blur(10px);
}

.modal{
  position:absolute; inset:0;
  background: rgba(0,0,0,.55);
  display:none;
  place-items:center;
  padding: 18px;
}
.modal[aria-hidden="false"]{display:grid}
.modalCard{
  width: min(520px, 100%);
  border-radius: 22px;
  background: rgba(15,15,24,.92);
  border: 1px solid rgba(255,255,255,.14);
  box-shadow: var(--shadow);
  padding: 18px;
}
.modalTitle{
  font-weight: 850;
  font-size: 18px;
  margin-bottom: 10px;
}
.modalList{
  margin: 0 0 16px 0;
  padding-left: 18px;
  color: rgba(255,255,255,.84);
}
.toast{
  position:absolute;
  left:50%;
  bottom: calc(64px + var(--safeBottom));
  transform: translateX(-50%);
  background: rgba(0,0,0,.72);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 999px;
  padding: 10px 12px;
  color: rgba(255,255,255,.92);
  display:none;
  backdrop-filter: blur(10px);
}
.toast[aria-hidden="false"]{display:block}

@media (max-width: 520px){
  .content{padding: 18px}
  .iconBtn{width:36px;height:36px}
}