:root {
  --official-bg: #050403;
  --official-gold: #e8c879;
  --official-gold-light: #f7e6b5;
  --official-text: #fff8e9;
  --official-text-soft: rgba(245, 231, 203, 0.7);
  --official-border: rgba(239, 205, 128, 0.42);
  --official-stage-radius: 28px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  overscroll-behavior: none;
  background: var(--official-bg);
}

body {
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  overflow: hidden;
  color: var(--official-text);
  font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button {
  font: inherit;
}

.official-navigation-shell {
  width: min(100%, 560px);
  height: 100vh;
  height: 100dvh;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0 auto;
  padding:
    max(8px, env(safe-area-inset-top, 0px))
    10px
    max(8px, env(safe-area-inset-bottom, 0px));
  overflow: hidden;
}

.official-navigation-stage {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  border: 1px solid rgba(242, 211, 146, 0.2);
  border-radius: var(--official-stage-radius);
  background: #080604;
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.5);
  isolation: isolate;
  animation: official-navigation-hero-enter 680ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.official-navigation-stage::after {
  position: absolute;
  z-index: 1;
  inset: auto 0 0;
  height: 50%;
  background: linear-gradient(180deg, transparent 0%, rgba(5, 4, 3, 0.18) 12%, rgba(5, 4, 3, 0.84) 52%, rgba(5, 4, 3, 0.99) 100%);
  content: '';
  pointer-events: none;
}

.official-navigation-stage-image {
  position: absolute;
  z-index: 0;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  transform: scale(1.06);
  transform-origin: center top;
}

.official-navigation-top-reference,
.official-navigation-phone-reference {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.official-navigation-top-reference {
  z-index: 2;
  animation: official-navigation-brand-enter 620ms cubic-bezier(0.22, 1, 0.36, 1) 80ms both;
}

.official-navigation-phone-reference {
  z-index: 1;
  transform: scale(1.06);
  transform-origin: center top;
}

.official-navigation-dock {
  position: absolute;
  z-index: 2;
  right: 0;
  bottom: 0;
  left: 0;
  max-height: 38%;
  padding:
    0
    16px
    max(16px, env(safe-area-inset-bottom, 0px));
  overflow-y: auto;
  scrollbar-width: none;
  animation: official-navigation-dock-enter 560ms cubic-bezier(0.22, 1, 0.36, 1) 120ms both;
}

.official-navigation-dock::-webkit-scrollbar {
  display: none;
}

.official-navigation-panel {
  width: 100%;
}

.official-navigation-panel-header {
  margin: 0 0 11px;
  color: var(--official-gold-light);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.1em;
  text-align: center;
  text-shadow: 0 3px 18px rgba(0, 0, 0, 0.68);
}

.official-navigation-lines {
  display: grid;
  gap: 8px;
}

.official-navigation-line {
  --line-order: 0;
  width: 100%;
  min-height: 50px;
  padding: 0 15px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  overflow: hidden;
  border: 1px solid rgba(239, 205, 128, 0.68);
  border-radius: 14px;
  background:
    linear-gradient(100deg, rgba(51, 36, 14, 0.9), rgba(22, 15, 6, 0.84)),
    rgba(8, 6, 3, 0.88);
  box-shadow:
    inset 0 1px 0 rgba(255, 245, 213, 0.12),
    0 0 0 1px rgba(209, 157, 54, 0.08),
    0 8px 28px rgba(0, 0, 0, 0.28);
  color: var(--official-text);
  cursor: pointer;
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
  isolation: isolate;
  animation:
    official-navigation-line-enter 440ms cubic-bezier(0.22, 1, 0.36, 1) calc(200ms + var(--line-order) * 70ms) both,
    official-navigation-route-glow 2.8s ease-in-out calc(900ms + var(--line-order) * 360ms) infinite;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.official-navigation-line::before {
  position: absolute;
  z-index: 0;
  top: -35%;
  bottom: -35%;
  left: -58%;
  width: 34%;
  background: linear-gradient(90deg, transparent, rgba(255, 232, 165, 0.38), transparent);
  content: '';
  pointer-events: none;
  transform: skewX(-18deg);
  animation: official-navigation-route-shine 3.6s ease-in-out calc(1.1s + var(--line-order) * 540ms) infinite;
}

.official-navigation-line:hover,
.official-navigation-line:focus-visible {
  border-color: rgba(248, 220, 151, 0.72);
  background: linear-gradient(100deg, rgba(43, 31, 14, 0.86), rgba(27, 19, 9, 0.72));
}

.official-navigation-line:focus-visible {
  outline: 2px solid var(--official-gold-light);
  outline-offset: 2px;
}

.official-navigation-line:active {
  transform: scale(0.985);
}

.official-navigation-line-label {
  position: relative;
  z-index: 1;
  min-width: 0;
  overflow: hidden;
  color: var(--official-gold-light);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.03em;
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.official-navigation-line-action {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 5px;
  color: var(--official-gold);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.official-navigation-line-arrow {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 20px;
  font-weight: 400;
  line-height: 0.8;
  transition: transform 160ms ease;
}

.official-navigation-line:hover .official-navigation-line-arrow,
.official-navigation-line:focus-visible .official-navigation-line-arrow {
  transform: translateX(2px);
}

.official-navigation-footnote {
  margin: 10px 0 0;
  color: var(--official-text-soft);
  font-size: 11px;
  line-height: 1.45;
  letter-spacing: 0.03em;
  text-align: center;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.8);
}

@keyframes official-navigation-hero-enter {
  from {
    opacity: 0;
    transform: scale(0.99);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes official-navigation-brand-enter {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes official-navigation-dock-enter {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes official-navigation-line-enter {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes official-navigation-route-glow {
  0%,
  100% {
    border-color: rgba(239, 205, 128, 0.48);
    box-shadow:
      inset 0 1px 0 rgba(255, 245, 213, 0.1),
      0 0 0 1px rgba(209, 157, 54, 0.06),
      0 8px 28px rgba(0, 0, 0, 0.28);
  }
  50% {
    border-color: rgba(255, 224, 151, 0.9);
    box-shadow:
      inset 0 1px 0 rgba(255, 248, 222, 0.18),
      0 0 0 1px rgba(234, 187, 87, 0.16),
      0 0 18px rgba(211, 155, 46, 0.28);
  }
}

@keyframes official-navigation-route-shine {
  0%,
  58% {
    left: -58%;
    opacity: 0;
  }
  66% {
    opacity: 1;
  }
  84% {
    left: 124%;
    opacity: 0;
  }
  100% {
    left: 124%;
    opacity: 0;
  }
}

@media (max-width: 480px) {
  :root {
    --official-stage-radius: 23px;
  }

  .official-navigation-shell {
    padding:
      max(6px, env(safe-area-inset-top, 0px))
      7px
      max(6px, env(safe-area-inset-bottom, 0px));
  }

  .official-navigation-dock {
    padding:
      0
      11px
      max(13px, env(safe-area-inset-bottom, 0px));
  }

  .official-navigation-panel-header {
    margin-bottom: 9px;
    font-size: 15px;
  }

  .official-navigation-line {
    min-height: 48px;
    padding: 0 13px;
    border-radius: 13px;
  }

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

  .official-navigation-line-action {
    font-size: 12px;
  }

  .official-navigation-footnote {
    margin-top: 8px;
    font-size: 10.5px;
  }
}

@media (max-height: 700px) {
  .official-navigation-stage::after {
    height: 54%;
  }

  .official-navigation-dock {
    max-height: 44%;
    padding-bottom: max(9px, env(safe-area-inset-bottom, 0px));
  }

  .official-navigation-panel-header {
    margin-bottom: 7px;
    font-size: 14px;
  }

  .official-navigation-lines {
    gap: 6px;
  }

  .official-navigation-line {
    min-height: 43px;
  }

  .official-navigation-footnote {
    margin-top: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .official-navigation-stage,
  .official-navigation-top-reference,
  .official-navigation-dock,
  .official-navigation-line,
  .official-navigation-line::before {
    animation: none;
  }

  .official-navigation-line,
  .official-navigation-line::before,
  .official-navigation-line-arrow {
    transition: none;
  }
}