* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: #0a1018;
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Helvetica Neue', sans-serif;
}

.bt-body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 12%, rgba(0, 123, 255, 0.18), transparent 24%),
    radial-gradient(circle at 78% 18%, rgba(0, 255, 170, 0.1), transparent 18%),
    linear-gradient(180deg, #09111b 0%, #070d15 100%);
}

.bt-main {
  display: flex;
  justify-content: center;
}

.bt-screen {
  position: relative;
  width: min(100vw, 420px);
  margin: 0 auto;
}

.bt-screen-image {
  display: block;
  width: 100%;
  height: auto;
}

.bt-hotspot,
.bt-menu-hotspot {
  position: absolute;
  border: none;
  padding: 0;
  background: transparent;
  cursor: pointer;
}

.bt-hotspot:focus-visible,
.bt-menu-hotspot:focus-visible {
  outline: 2px solid rgba(207, 255, 31, 0.95);
  outline-offset: 1px;
}

.bt-input-overlay {
  position: absolute;
  border: none;
  outline: none;
  background: transparent;
  color: #fff;
  font-size: 14px;
  padding: 0 12px;
}

.bt-input-overlay::placeholder {
  color: rgba(255, 255, 255, 0.38);
}

.bt-faq-answer {
  position: absolute;
  z-index: 3;
  border-radius: 10px;
  background: rgba(14, 18, 27, 0.94);
  border: 1px solid rgba(210, 255, 20, 0.24);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.28);
  padding: 10px 12px;
  color: #dfe6fb;
  font-size: 12px;
  line-height: 1.55;
}

.bt-faq-answer-title {
  display: block;
  margin-bottom: 4px;
  color: #d2ff14;
  font-weight: 700;
}

.bt-overlay-mask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.56);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.18s ease;
  z-index: 40;
}

.bt-overlay-mask.is-open {
  opacity: 1;
  visibility: visible;
}

.bt-drawer-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 45;
  width: min(82vw, 320px);
  background: #181d2b;
  color: #fff;
  transform: translateX(100%);
  opacity: 0;
  visibility: hidden;
  transition: transform 0.2s ease, opacity 0.2s ease;
  box-shadow: -8px 0 30px rgba(0, 0, 0, 0.35);
}

.bt-drawer-panel.is-open {
  transform: translateX(0);
  opacity: 1;
  visibility: visible;
}

.bt-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 16px;
  font-weight: 700;
}

.bt-panel-close {
  border: none;
  background: transparent;
  color: #fff;
  font-size: 22px;
}

.bt-panel-list {
  display: flex;
  flex-direction: column;
  padding: 10px 0;
}

.bt-panel-item {
  width: 100%;
  border: none;
  background: transparent;
  color: #dfe6fb;
  text-align: left;
  padding: 14px 16px;
  font-size: 15px;
  font-weight: 600;
}

.bt-panel-item.is-active {
  color: #d2ff14;
}

.bt-modal {
  position: fixed;
  left: 50%;
  top: 50%;
  width: min(92vw, 420px);
  transform: translate(-50%, -46%);
  z-index: 50;
  border-radius: 18px;
  overflow: hidden;
  background: #121623;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.bt-modal.is-open {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%);
}

.bt-modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.bt-modal-close {
  border: none;
  background: transparent;
  color: #fff;
  font-size: 20px;
}

.bt-modal-body {
  padding: 14px;
}

.bt-video {
  display: block;
  width: 100%;
  border-radius: 12px;
  background: #000;
}

.bt-toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(10px);
  z-index: 60;
  padding: 10px 14px;
  background: rgba(12, 16, 24, 0.96);
  color: #fff;
  border-radius: 999px;
  font-size: 13px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.bt-toast.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.bt-fairness-carousel-wrap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 18%;
  height: 14%;
  z-index: 2;
  pointer-events: none;
}

.bt-fairness-carousel {
  display: flex;
  gap: 8px;
  padding: 0 12px;
  height: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  pointer-events: auto;
}

.bt-carousel-slide {
  flex: 0 0 calc(33.333% - 6px);
  min-width: 100px;
  scroll-snap-align: start;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 12px;
  background: rgba(24, 29, 43, 0.85);
  color: #d2ff14;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  padding: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}

.bt-carousel-slide:active {
  opacity: 0.9;
}