* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Serif SC", serif;
  background: #14100d;
  color: #f7f3ea;
  -webkit-font-smoothing: antialiased;
}

/* ---- 顶部导航 ---- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: rgba(20,16,13,.7);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(247,243,234,.1);
}
.topbar__back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(247,243,234,.75);
  text-decoration: none;
  font-size: 14px;
}
.topbar__back span { font-size: 18px; }
.topbar__back:hover { color: #e9c46a; }
.topbar__title {
  font-size: 13px;
  letter-spacing: .3em;
  color: rgba(247,243,234,.55);
}
.topbar__logo {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  background: #b03a2e;
  color: #fff;
  font-size: 18px;
  border-radius: 5px;
  text-decoration: none;
  box-shadow: 0 3px 10px rgba(140,42,32,.4);
}

/* ---- 田字四格 ---- */
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: minmax(280px, 46vh) minmax(280px, 46vh);
  gap: 0;
  margin: 16px;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(247,243,234,.14);
}

.tile {
  position: relative;
  display: block;
  overflow: hidden;
  background: #1c1814;
  text-decoration: none;
  color: #f7f3ea;
}
.tile + .tile { border-left: 1px solid rgba(247,243,234,.14); }
.tile--dan, .tile--jing, .tile--chou { }

.tile__video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: 0;
}
/* 没有视频文件时的水墨占位（按行当配色） */
.tile__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(120% 120% at 70% 20%, transparent 30%, rgba(20,16,13,.55) 75%),
    linear-gradient(180deg, transparent 40%, rgba(20,16,13,.65) 100%);
}
.tile--sheng .tile__veil::after,
.tile--dan   .tile__veil::after,
.tile--jing  .tile__veil::after,
.tile--chou  .tile__veil::after {
  content: attr(data-char);
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: clamp(120px, 22vw, 220px);
  font-weight: 700;
  color: rgba(247,243,234,.06);
  filter: blur(1px);
}
.tile--sheng .tile__veil::after { color: rgba(180,60,50,.12); }
.tile--dan   .tile__veil::after { color: rgba(233,196,106,.12); }
.tile--jing  .tile__veil::after { color: rgba(60,60,80,.25); }
.tile--chou  .tile__veil::after { color: rgba(120,150,120,.14); }

/* 占位大字：生旦净丑，每个 tile 对应一个 */
.tile__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 6px;
  padding: 18px 20px 22px;
}
.tile__tag {
  align-self: flex-start;
  font-size: 11px;
  letter-spacing: .25em;
  color: #e9c46a;
  border: 1px solid rgba(233,196,106,.4);
  padding: 3px 9px;
  border-radius: 999px;
  margin-bottom: 4px;
}
.tile__name {
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 700;
  letter-spacing: .14em;
  color: #f7f3ea;
  text-shadow: 0 2px 8px rgba(0,0,0,.6);
}
.tile__desc {
  font-size: 12px;
  line-height: 1.7;
  color: rgba(247,243,234,.68);
  max-width: 28ch;
}

/* 悬停：轻放大 */
.tile:hover .tile__video { transform: scale(1.04); transition: transform .6s ease; }
.tile:hover .tile__name { color: #e9c46a; }

/* ---- 浮入选项 ---- */
.menus {
  padding: 34px 20px 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}
.menus__head {
  font-size: 13px;
  letter-spacing: .5em;
  color: rgba(247,243,234,.5);
}
.menus__list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(150px, 1fr));
  gap: 14px 16px;
  width: 100%;
  max-width: 620px;
}
.menu {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 14px 10px;
  border: 1px solid rgba(247,243,234,.14);
  border-radius: 10px;
  color: rgba(247,243,234,.85);
  text-decoration: none;
  font-size: 15px;
  letter-spacing: .1em;
  background: rgba(247,243,234,.03);
  /* 浮入初始态：由 home.js 添加 .in 触发过渡 */
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s ease, transform .7s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.menu.in { opacity: 1; transform: translateY(0); }
.menu:hover {
  background: rgba(233,196,106,.12);
  border-color: rgba(233,196,106,.5);
  color: #e9c46a;
}

/* ---- 响应式：手机上两行两列 ---- */
@media (max-width: 560px) {
  .grid { margin: 10px; grid-template-rows: 38vw 38vw; }
  .tile__desc { display: none; }
  .menus__list { grid-template-columns: repeat(2, 1fr); }
}