/* UI V6 — 原创纸幕入场与金云蝶纹全站菜单。 */

.site-intro,
.site-menu-root,
.site-menu-trigger {
  display: none;
}

.site-intro[hidden],
.site-menu-root[hidden] {
  display: none !important;
}

/* 页头确认首次开场后，隐藏标记尚未解除时也先用纸幕覆盖首屏。 */
html.site-intro-pending .site-intro[hidden] {
  display: grid !important;
}

html.site-intro-pending,
html.site-intro-active,
body.site-intro-active {
  overflow: hidden;
  overscroll-behavior: none;
}

html.site-intro-pending .site-intro,
html.js-enabled .site-intro:not([hidden]) {
  position: fixed;
  z-index: 260;
  inset: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: transparent;
  isolation: isolate;
}

.site-intro-curtain {
  position: absolute;
  z-index: 1;
  top: 0;
  bottom: 0;
  width: 51%;
  background:
    linear-gradient(105deg, rgba(255, 255, 255, .72), transparent 38%),
    radial-gradient(circle at 22% 18%, rgba(183, 135, 48, .08), transparent 30%),
    #f8efdf;
  box-shadow: inset 0 0 90px rgba(56, 41, 57, .08);
  will-change: transform;
}

.site-intro-curtain::before,
.site-intro-curtain::after {
  content: "";
  position: absolute;
  opacity: .5;
}

.site-intro-curtain::before {
  top: 13%;
  width: min(240px, 54%);
  height: 72px;
  border-top: 1px solid rgba(183, 135, 48, .58);
  border-radius: 50%;
}

.site-intro-curtain::after {
  bottom: 15%;
  width: min(180px, 42%);
  height: 58px;
  border-top: 1px solid rgba(169, 52, 73, .3);
  border-radius: 50%;
}

.site-intro-curtain-left {
  left: 0;
  border-right: 1px solid rgba(183, 135, 48, .62);
}

.site-intro-curtain-left::before,
.site-intro-curtain-left::after {
  right: 8%;
}

.site-intro-curtain-right {
  right: 0;
  border-left: 1px solid rgba(183, 135, 48, .62);
  transform: scaleX(-1);
}

.site-intro-curtain-right::before,
.site-intro-curtain-right::after {
  right: 8%;
}

.site-intro-sign {
  position: relative;
  z-index: 3;
  width: min(292px, calc(100vw - 64px));
  min-height: 350px;
  padding: 47px 35px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(183, 135, 48, .76);
  outline: 1px solid rgba(169, 52, 73, .3);
  outline-offset: -10px;
  background:
    radial-gradient(circle at 50% 8%, rgba(231, 191, 104, .13), transparent 32%),
    rgba(255, 250, 239, .96);
  box-shadow: 0 28px 80px rgba(24, 20, 45, .2);
  color: var(--blue);
  text-align: center;
  opacity: 0;
  transform: translateY(10px) scale(.975);
}

.site-intro-sign::before,
.site-intro-sign::after {
  content: "◇";
  position: absolute;
  left: 50%;
  color: var(--red);
  font-size: 18px;
  transform: translateX(-50%);
}

.site-intro-sign::before { top: 23px; }
.site-intro-sign::after { bottom: 23px; }

.site-intro-sign span,
.site-intro-sign small {
  font: 700 10px/1.5 var(--mono);
  letter-spacing: .16em;
}

.site-intro-sign span { color: var(--red); }

.site-intro-sign strong {
  margin: 19px 0 14px;
  font: 650 36px/1.25 var(--serif);
  letter-spacing: .12em;
}

.site-intro-sign small {
  color: #766357;
}

.site-intro-butterfly {
  width: 54px;
  height: 41px;
  margin-top: 18px;
  overflow: visible;
  filter: drop-shadow(0 4px 8px rgba(183, 135, 48, .18));
}

.site-intro-butterfly .wing-upper,
.site-intro-butterfly .wing-lower {
  fill: rgba(231, 191, 104, .2);
  stroke: #b78730;
  stroke-width: 1.1;
}

.site-intro-butterfly .butterfly-antennae {
  fill: none;
  stroke: #a93449;
  stroke-width: 1.2;
  stroke-linecap: round;
}

.site-intro-butterfly .butterfly-body {
  fill: #b78730;
}

.site-intro-sign i {
  width: 0;
  height: 1px;
  margin-top: 25px;
  background: linear-gradient(90deg, transparent, var(--gold), var(--red), var(--gold), transparent);
}

.site-intro-skip {
  position: absolute;
  z-index: 5;
  right: max(20px, env(safe-area-inset-right, 0px));
  bottom: calc(22px + env(safe-area-inset-bottom, 0px));
  min-width: 106px;
  min-height: 46px;
  border: 1px solid rgba(17, 28, 83, .32);
  border-radius: 999px;
  background: rgba(255, 250, 239, .82);
  color: var(--blue);
  font: 700 12px/1 var(--sans);
  letter-spacing: .08em;
  cursor: pointer;
}

.site-intro-skip:hover,
.site-intro-skip:focus-visible {
  border-color: var(--red);
  color: var(--red);
}

.site-intro.is-running .site-intro-sign {
  animation: v6-intro-sign 2.05s ease both;
}

.site-intro.is-running .site-intro-sign i {
  animation: v6-intro-line 1.25s .2s ease both;
}

.site-intro.is-running .site-intro-curtain-left {
  animation: v6-curtain-left 2.05s cubic-bezier(.72, 0, .2, 1) both;
}

.site-intro.is-running .site-intro-curtain-right {
  animation: v6-curtain-right 2.05s cubic-bezier(.72, 0, .2, 1) both;
}

@keyframes v6-intro-sign {
  0% { opacity: 0; transform: translateY(10px) scale(.975); }
  14%, 44% { opacity: 1; transform: none; }
  68%, 100% { opacity: 0; transform: translateY(-12px) scale(1.02); }
}

@keyframes v6-intro-line {
  0% { width: 0; }
  58%, 100% { width: 142px; }
}

@keyframes v6-curtain-left {
  0%, 46% { transform: translateX(0); }
  100% { transform: translateX(-103%); }
}

@keyframes v6-curtain-right {
  0%, 46% { transform: scaleX(-1) translateX(0); }
  100% { transform: scaleX(-1) translateX(-103%); }
}

/* 预备和就绪状态保持同一布局；无脚本或初始化失败时保留普通导航。 */
html:is(.nav-pending, .nav-ready) .main-nav,
html:is(.nav-pending, .nav-ready) .account-nav {
  display: none !important;
}

html:is(.nav-pending, .nav-ready) .site-header {
  min-height: 80px;
  padding-right: 116px;
}

html:is(.nav-pending, .nav-ready) .site-menu-trigger {
  position: fixed;
  z-index: 210;
  top: 14px;
  right: clamp(14px, 2vw, 30px);
  width: 72px;
  height: 72px;
  padding: 7px 5px 6px;
  display: grid;
  place-items: center;
  gap: 1px;
  border: 1px solid rgba(231, 191, 104, .76);
  border-radius: 36px 36px 7px 7px;
  background: linear-gradient(155deg, rgba(24, 38, 91, .97), rgba(9, 15, 53, .98));
  box-shadow: 0 10px 26px rgba(17, 14, 37, .22), inset 0 0 0 4px rgba(231, 191, 104, .08);
  color: var(--pale-gold);
  cursor: pointer;
  transition: border-color .25s ease, background .25s ease, transform .25s ease;
}

html.nav-ready .site-menu-trigger:not(:disabled):hover,
html.nav-ready .site-menu-trigger:not(:disabled):focus-visible {
  border-color: #fff0b8;
  background: linear-gradient(155deg, #b5344a, #711f36);
  transform: translateY(-2px);
}

.site-menu-emblem {
  position: relative;
  width: 31px;
  height: 26px;
}

.site-menu-butterfly,
.site-menu-emblem .menu-close-line {
  position: absolute;
  transition: transform .35s ease, opacity .25s ease;
}

.site-menu-butterfly {
  inset: 0;
  width: 31px;
  height: 26px;
  overflow: visible;
}

.site-menu-butterfly .wing-upper,
.site-menu-butterfly .wing-lower {
  fill: rgba(231, 191, 104, .12);
  stroke: currentColor;
  stroke-width: 1.6;
}

.site-menu-butterfly .butterfly-antennae {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
}

.site-menu-butterfly .butterfly-body {
  fill: var(--gold);
}

.site-menu-emblem .menu-close-line {
  left: 3px;
  top: 12px;
  width: 25px;
  height: 1px;
  background: currentColor;
  opacity: 0;
}

.site-menu-emblem .line-a { transform: rotate(45deg) scaleX(.5); }
.site-menu-emblem .line-b { transform: rotate(-45deg) scaleX(.5); }

.site-menu-open .site-menu-butterfly {
  opacity: 0;
  transform: scale(.78);
}

.site-menu-trigger-label {
  font: 700 11px/1 var(--sans);
  letter-spacing: .12em;
}

.site-menu-open .site-menu-emblem .menu-close-line { opacity: 1; }
.site-menu-open .site-menu-emblem .line-a { transform: rotate(45deg); }
.site-menu-open .site-menu-emblem .line-b { transform: rotate(-45deg); }

body.site-menu-open {
  overflow: hidden;
  padding-right: var(--menu-scrollbar, 0px);
}

html.js-enabled .site-menu-root:not([hidden]) {
  position: fixed;
  z-index: 190;
  inset: 0;
  display: block;
}

.site-menu-backdrop {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  background:
    linear-gradient(115deg, rgba(17, 28, 83, .78), rgba(94, 25, 48, .69)),
    repeating-linear-gradient(45deg, rgba(255, 255, 255, .025) 0 2px, transparent 2px 8px);
  opacity: 0;
  cursor: pointer;
  transition: opacity .38s ease;
  backdrop-filter: blur(5px);
}

.site-menu-panel {
  position: absolute;
  z-index: 2;
  top: 0;
  right: 0;
  width: min(500px, 100vw);
  height: 100%;
  height: 100dvh;
  padding: clamp(78px, 10vh, 108px) clamp(28px, 5vw, 54px) 34px;
  overflow-x: hidden;
  overflow-y: auto;
  border-left: 1px solid rgba(183, 135, 48, .72);
  background:
    radial-gradient(circle at 78% 14%, rgba(181, 46, 66, .1), transparent 25%),
    linear-gradient(115deg, rgba(255, 255, 255, .45), transparent 30%),
    repeating-linear-gradient(0deg, transparent 0 8px, rgba(56, 41, 57, .018) 8px 9px),
    #fbf3e6;
  box-shadow: -22px 0 70px rgba(18, 15, 38, .3);
  color: var(--ink);
  transform: translateX(102%);
  transition: transform .42s cubic-bezier(.72, 0, .2, 1);
}

.site-menu-panel::before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(183, 135, 48, .22);
  pointer-events: none;
}

.site-menu-root.is-open .site-menu-backdrop { opacity: 1; }
.site-menu-root.is-open .site-menu-panel { transform: translateX(0); }

.site-menu-heading {
  position: relative;
  z-index: 2;
  margin-bottom: clamp(34px, 6vh, 58px);
  padding: 0 0 26px;
  border-bottom: 1px solid rgba(181, 46, 66, .24);
}

.site-menu-heading p,
.site-menu-heading span {
  margin: 0;
  color: var(--red);
  font: 700 9px/1.6 var(--mono);
  letter-spacing: .13em;
}

.site-menu-heading h2 {
  margin: 12px 0 8px;
  color: var(--blue);
  font: 650 clamp(32px, 5vw, 46px)/1.2 var(--serif);
  letter-spacing: .1em;
}

.site-menu-heading span { color: #756a6f; }

.site-menu-close {
  position: absolute;
  z-index: 4;
  top: 20px;
  right: 22px;
  min-width: 64px;
  min-height: 48px;
  padding: 7px 8px;
  display: grid;
  place-items: center;
  border: 0;
  background: transparent;
  color: var(--blue);
  cursor: pointer;
}

.site-menu-close span {
  position: relative;
  width: 26px;
  height: 20px;
}

.site-menu-close span::before,
.site-menu-close span::after {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 26px;
  height: 1px;
  background: currentColor;
}

.site-menu-close span::before { transform: rotate(45deg); }
.site-menu-close span::after { transform: rotate(-45deg); }
.site-menu-close b { font: 700 10px/1 var(--sans); letter-spacing: .1em; }
.site-menu-close:hover { color: var(--red); }

.site-menu-links {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid rgba(41, 33, 44, .16);
  border-left: 1px solid rgba(41, 33, 44, .16);
}

.site-menu-links a {
  min-height: 112px;
  padding: 18px;
  display: grid;
  align-content: center;
  grid-template-columns: 30px 1fr;
  gap: 2px 11px;
  border-right: 1px solid rgba(41, 33, 44, .16);
  border-bottom: 1px solid rgba(41, 33, 44, .16);
  background: rgba(255, 255, 255, .24);
  text-decoration: none;
  opacity: 0;
  transform: translateY(13px);
  transition: color .22s ease, background .22s ease, opacity .34s ease, transform .34s ease;
}

.site-menu-root.is-open .site-menu-links a { opacity: 1; transform: none; }
.site-menu-root.is-open .site-menu-links a:nth-child(1) { transition-delay: .08s; }
.site-menu-root.is-open .site-menu-links a:nth-child(2) { transition-delay: .13s; }
.site-menu-root.is-open .site-menu-links a:nth-child(3) { transition-delay: .18s; }
.site-menu-root.is-open .site-menu-links a:nth-child(4) { transition-delay: .23s; }

.site-menu-links a:hover,
.site-menu-links a:focus-visible {
  background: var(--blue);
  color: var(--paper);
}

.site-menu-links a > span {
  grid-row: 1 / 3;
  color: var(--red);
  font: 700 10px/1.5 var(--mono);
}

.site-menu-links a:hover > span,
.site-menu-links a:focus-visible > span { color: var(--gold); }

.site-menu-links strong {
  font: 650 21px/1.35 var(--serif);
  letter-spacing: .08em;
}

.site-menu-links small {
  color: #887b7f;
  font: 700 8px/1.3 var(--mono);
  letter-spacing: .12em;
}

.site-menu-links a:hover small,
.site-menu-links a:focus-visible small { color: var(--gold-soft); }

.site-menu-account {
  position: relative;
  z-index: 2;
  margin-top: 27px;
  display: flex;
  align-items: center;
  gap: 10px 20px;
  flex-wrap: wrap;
}

.site-menu-account a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--red);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.site-menu-account a:hover,
.site-menu-account a:focus-visible { color: var(--blue); }

.site-menu-account .site-menu-submit {
  padding: 0 15px;
  border: 1px solid var(--red);
}

.site-menu-note {
  position: relative;
  z-index: 2;
  margin: 32px 0 0;
  color: #8a7c7f;
  font: 12px/1.6 var(--serif);
  letter-spacing: .08em;
}

.site-menu-cloud {
  position: absolute;
  z-index: 0;
  width: 260px;
  height: 90px;
  border-top: 1px solid rgba(183, 135, 48, .34);
  border-radius: 50%;
  pointer-events: none;
}

.site-menu-cloud::after {
  content: "";
  position: absolute;
  inset: 17px -32px auto 22px;
  height: 60px;
  border-top: 1px solid rgba(169, 52, 73, .19);
  border-radius: 50%;
}

.site-menu-cloud.cloud-top { top: 18%; right: -62px; transform: rotate(-9deg); }
.site-menu-cloud.cloud-bottom { left: -74px; bottom: 8%; transform: rotate(13deg); }

@media (max-width: 620px) {
  html.js-enabled:not(.nav-ready):not(.nav-pending) .main-nav,
  html.js-enabled:not(.nav-ready):not(.nav-pending) .account-nav {
    display: flex !important;
  }

  html.js-enabled:not(.nav-ready):not(.nav-pending) .menu-button {
    display: none !important;
  }

  html:is(.nav-pending, .nav-ready) .site-header {
    min-height: 66px;
    padding-right: 82px;
  }

  html:is(.nav-pending, .nav-ready) .site-menu-trigger {
    top: 9px;
    right: 10px;
    width: 56px;
    height: 56px;
    border-radius: 28px 28px 6px 6px;
  }

  .site-menu-emblem { width: 26px; height: 20px; }
  .site-menu-butterfly { width: 26px; height: 20px; }
  .site-menu-emblem .menu-close-line { top: 9px; left: 2px; width: 22px; }
  .site-menu-trigger-label { font-size: 9px; }

  .site-menu-panel {
    width: 100vw;
    padding: 76px 20px 28px;
  }

  .site-menu-heading { margin-bottom: 28px; padding-bottom: 20px; }
  .site-menu-heading h2 { font-size: 34px; }
  .site-menu-close { top: 14px; right: 20px; }
  .site-menu-links a { min-height: 98px; padding: 14px; grid-template-columns: 24px 1fr; gap: 2px 7px; }
  .site-menu-links strong { font-size: 18px; }
  .site-menu-account { margin-top: 20px; }
  .site-menu-note { margin-top: 22px; }

  .site-intro-sign {
    width: min(260px, calc(100vw - 54px));
    min-height: 320px;
  }

  .site-intro-sign strong { font-size: 31px; }
}

@media (prefers-reduced-motion: reduce) {
  .site-menu-trigger,
  .site-menu-butterfly,
  .site-menu-emblem .menu-close-line,
  .site-menu-backdrop,
  .site-menu-panel,
  .site-menu-links a {
    scroll-behavior: auto;
    transition-duration: 0s !important;
    transition-delay: 0s !important;
    animation: none !important;
  }
}

.motion-simple .site-menu-trigger,
.motion-simple .site-menu-butterfly,
.motion-simple .site-menu-emblem .menu-close-line,
.motion-simple .site-menu-backdrop,
.motion-simple .site-menu-panel,
.motion-simple .site-menu-links a {
  transition-duration: 0s !important;
  transition-delay: 0s !important;
  animation: none !important;
}

.motion-simple .site-menu-links a {
  opacity: 1;
  transform: none;
}