:root {
  --official-bg: radial-gradient(circle at top, rgba(128, 55, 225, 0.24), transparent 30%),
    linear-gradient(180deg, #08060b 0%, #0c0812 44%, #07050a 100%);
  --official-panel: linear-gradient(180deg, rgba(31, 23, 14, 0.97), rgba(17, 12, 8, 0.98));
  --official-border: rgba(243, 204, 120, 0.52);
  --official-border-soft: rgba(243, 204, 120, 0.2);
  --official-gold: #f6d487;
  --official-gold-strong: #dba447;
  --official-text: #f6e5bd;
  --official-text-soft: rgba(246, 229, 189, 0.76);
  --official-purple: #8d46ff;
  --official-shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
  --official-stage-radius: 34px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100vh;
  position: fixed;
  inset: 0;
  overflow: hidden;
  overscroll-behavior: none;
  background: #07050a;
}

body {
  margin: 0;
  height: 100vh;
  width: 100%;
  background: var(--official-bg);
  color: var(--official-text);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow: hidden;
  overscroll-behavior: none;
}

.official-navigation-shell {
  width: min(100%, 760px);
  margin: 0 auto;
  height: 100vh;
  padding-bottom: clamp(260px, 34vw, 360px);
  overflow: hidden;
}

.official-navigation-stage {
  position: relative;
  z-index: 1;
}

.official-navigation-stage-image {
  display: block;
  width: 100%;
  height: calc(100vh - clamp(260px, 34vw, 360px));
  border-radius: var(--official-stage-radius);
  box-shadow: var(--official-shadow);
  object-fit: cover;
  object-position: center top;
}

.official-navigation-dock {
  position: fixed;
  left: 50%;
  bottom: max(0px, env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%);
  z-index: 20;
  width: min(calc(100vw - 24px), 704px);
  display: grid;
  justify-items: center;
  gap: 16px;
  padding: 0 12px 12px;
}

.official-navigation-service {
  min-width: min(100%, 440px);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 18px 34px;
  border-radius: 999px;
  border: 1px solid rgba(255, 238, 173, 0.58);
  background: linear-gradient(180deg, #ffe9a8 0%, #f6cb66 56%, #d79c35 100%);
  box-shadow: 0 22px 42px rgba(0, 0, 0, 0.32), inset 0 2px 0 rgba(255, 255, 255, 0.42);
  color: #2d1805;
}

.official-navigation-service-icon {
  font-size: 32px;
  line-height: 1;
}

.official-navigation-service-text {
  font-size: clamp(28px, 4.3vw, 42px);
  line-height: 1;
  font-weight: 700;
}

.official-navigation-panel {
  width: 100%;
  padding: 22px 22px 18px;
  border: 1px solid var(--official-border);
  border-radius: 28px;
  background: var(--official-panel);
  box-shadow: inset 0 0 0 1px var(--official-border-soft), var(--official-shadow);
  backdrop-filter: blur(10px);
}

.official-navigation-panel-header {
  margin-bottom: 18px;
  text-align: center;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
   line-height: 1.25;
    letter-spacing: 0.4px;
    color: #f8d886;
    background: linear-gradient(180deg, #fff6d7 0%, #f8d886 42%, #d6a24a 78%, #9b6424 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.official-navigation-lines {
  display: grid;
  gap: 12px;
}

.official-navigation-line {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  min-height: 54px;
  align-items: center;
  gap: 12px;
  padding: 8px 18px;
  border: 1px solid var(--official-border);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(23, 17, 10, 0.96), rgba(11, 8, 6, 0.98));
  box-shadow: inset 0 0 0 1px rgba(243, 204, 120, 0.08);
}

.official-navigation-line-icon {
  width: 34px;
  height: 34px;
}

.official-navigation-line-label {
  font-size: 22px;
  line-height: 1.2;
  font-weight: 700;
  color: var(--official-gold);
}

.official-navigation-line-button {
  border: 0;
  border-radius: 999px;
  padding: 8px 18px;
  background: linear-gradient(180deg, #ffe59c 0%, #f5c65b 52%, #db9f36 100%);
  color: #3c2407;
  font-size: 17px;
  font-weight: 700;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.42);
}

.official-navigation-footnote {
  margin: 18px 0 0;
  text-align: center;
  color: var(--official-text-soft);
  font-size: 17px;
  line-height: 1.5;
}

@media (max-width: 480px) {
  .official-navigation-shell {
    padding-inline: 12px;
    padding-bottom: 236px;
  }

  .official-navigation-stage-image {
    height: calc(100vh - 236px);
  }

  .official-navigation-dock {
    width: calc(100vw - 12px);
    gap: 12px;
    padding: 0 6px 6px;
  }

  .official-navigation-service {
    width: 100%;
    min-width: 0;
    padding: 14px 24px;
  }

  .official-navigation-line {
    grid-template-columns: 44px 1fr auto;
    min-height: 42px;
    padding: 6px 12px;
  }

  .official-navigation-line-icon {
    width: 28px;
    height: 28px;
  }

  .official-navigation-line-label {
    font-size: 17px;
  }

  .official-navigation-line-button {
    padding: 6px 12px;
    font-size: 14px;
  }

  .official-navigation-footnote {
    font-size: 15px;
  }

  .official-navigation-service-icon {
    font-size: 24px;
  }

  .official-navigation-service-text {
    font-size: 24px;
  }
}