* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  background:
    radial-gradient(circle at top, rgba(0, 166, 200, 0.18), transparent 38%),
    linear-gradient(180deg, #f4fbff 0%, #ffffff 100%);
  color: #15313f;
}

.bt-page {
  height: 100vh;
  height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  overflow: hidden;
}

.bt-card {
  width: 100%;
  max-width: 420px;
  height: 610px;
  max-height: calc(100svh - 36px);
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(21, 49, 63, 0.08);
  border-radius: 30px;
  padding: 26px 22px 22px;
  box-shadow: 0 24px 70px rgba(21, 49, 63, 0.12);
  text-align: center;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.bt-brand-logo {
  width: 178px;
  max-width: 72%;
  height: auto;
  display: block;
  margin: 2px auto 12px;
  flex-shrink: 0;
}

.bt-kicker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  margin: 0 auto 18px;
  padding: 8px 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, #e6f8ff, #fff4d8);
  color: #1f6f8b;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  flex-shrink: 0;
}

h1 {
  margin: 0 0 18px;
  font-size: 27px;
  line-height: 1.08;
  letter-spacing: -0.8px;
  flex-shrink: 0;
}

.bt-tagline {
  margin: -6px auto 22px;
  max-width: 310px;
  color: #647983;
  font-size: 15px;
  line-height: 1.45;
  flex-shrink: 0;
}

.bt-scroll-area {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.bt-actions {
  height: 100%;
  display: grid;
  gap: 11px;
  align-content: start;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 16px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.bt-actions::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.bt-scroll-rail {
  position: absolute;
  top: 0;
  right: 2px;
  width: 6px;
  height: 100%;
  border-radius: 999px;
  background: rgba(31, 111, 139, 0.12);
  overflow: hidden;
  pointer-events: none;
  z-index: 2;
}

.bt-scroll-thumb {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  min-height: 48px;
  border-radius: 999px;
  background: linear-gradient(
    180deg,
    rgba(0, 166, 200, 0.95),
    rgba(31, 111, 139, 1)
  );
  box-shadow: 0 0 12px rgba(0, 166, 200, 0.18);
}

.bt-btn {
  display: block;
  width: 100%;
  padding: 15px 14px;
  border-radius: 16px;
  text-decoration: none;
  background: #eef7fa;
  color: #15313f;
  font-size: 15px;
  font-weight: 800;
  border: 1px solid rgba(21, 49, 63, 0.08);
  box-shadow: 0 8px 20px rgba(21, 49, 63, 0.06);
}

.bt-btn.primary {
  background: linear-gradient(135deg, #00a6c8, #1f6f8b);
  color: white;
}

.bt-btn.outline {
  background: #fbfcfc;
  color: #6f7f87;
  border: 1px solid rgba(21, 49, 63, 0.10);
  box-shadow: none;
}

.bt-btn.outline:hover {
  color: #1f6f8b;
  border-color: rgba(31, 111, 139, 0.24);
  background: #ffffff;
}

.bt-info-box {
  margin: 24px 0 28px;
  padding: 18px 16px;
  border-radius: 22px;
  background: #f1f8fb;
  border: 1px solid rgba(21, 49, 63, 0.08);
  color: #233f4c;
  flex-shrink: 0;
}

.bt-info-box p {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
}

footer {
  margin-top: auto;
  padding-top: 15px;
  border-top: 1px solid rgba(21, 49, 63, 0.08);
  flex-shrink: 0;
}

.bt-footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.bt-footer-link {
  width: 34px;
  height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  text-decoration: none;
  background: linear-gradient(
    135deg,
    rgba(230, 248, 255, 0.95),
    rgba(255, 244, 216, 0.95)
  );
  border: 1px solid rgba(21, 49, 63, 0.08);
  box-shadow: 0 4px 10px rgba(21, 49, 63, 0.05);
  font-size: 15px;
  line-height: 1;
  font-weight: 800;
}

@media (max-height: 700px) {
  .bt-card {
    height: 560px;
    max-height: calc(100svh - 28px);
    padding: 20px 18px 18px;
    border-radius: 26px;
  }

  .bt-brand-logo {
    width: 148px;
    margin-bottom: 8px;
  }

  .bt-kicker {
    margin-bottom: 13px;
    padding: 7px 12px;
    font-size: 12px;
  }

  h1 {
    margin-bottom: 15px;
    font-size: 24px;
  }

  .bt-tagline {
    margin-bottom: 16px;
    font-size: 14px;
  }

  .bt-btn {
    padding: 14px 13px;
    border-radius: 15px;
    font-size: 14px;
  }

  footer {
    margin-top: 16px;
    padding-top: 12px;
  }

  .bt-footer-link {
    width: 32px;
    height: 32px;
    border-radius: 11px;
    font-size: 14px;
  }
}

.bt-detail-actions {
  display: grid;
  gap: 11px;
  flex-shrink: 0;
}