/* ============================================================
   103班 · 音乐领军班 · 首页
   第一屏:电影感品牌海报(视频 + 暗角 + 旋转光晕 + 掠光 + 胶片颗粒)
   往下:极简长滚动,四个板块直铺
   ============================================================ */

body.poster {
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

/* ---- 背景粒子画布(fixed + inset:0 自动铺满,避免 100vw 滚动条溢出) ---- */
#particles {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ---- 主容器 ---- */
.poster main {
  position: relative;
  z-index: 1;
}

/* ========== 导航:首屏悬在视频上,换成深色玻璃 + 白字 ========== */
/* 首页导航脱离文档流,压在视频之上(其余页面用 layout.css 的 sticky) */
body.poster .site-header {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
}
body.poster .site-header:not(.is-scrolled) {
  --nav-ink: #ffffff;
  --nav-ink-dim: rgba(255, 255, 255, 0.72);
  --nav-bg: rgba(10, 14, 24, 0.40);
  --nav-brd: rgba(255, 255, 255, 0.16);
}

/* ========== 第一屏:品牌海报 ========== */
.poster-screen {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  min-height: 100svh;
  text-align: center;
  cursor: pointer;
  padding: 110px 20px 130px;
  overflow: hidden;
  isolation: isolate;
  /* 不在这里加不透明底色:视频一旦加载失败会被 JS 隐藏,
     这里必须保持透明,才能露出最底层的粒子兜底背景 */
}

/* 封面视频铺满,object-fit:cover 避免黑边;
   深色底给视频"还没解码出来"的那一瞬间垫着,元素被隐藏时这层也会一起消失 */
.poster-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  background: #05070d;
  /* 画面一路铺到最底下,只在最后 8% 收口 —— 不再"从下往上"把内容刷掉 */
  -webkit-mask-image: linear-gradient(180deg,
    #000 0%, #000 92%, rgba(0, 0, 0, 0.6) 97%, transparent 100%);
  mask-image: linear-gradient(180deg,
    #000 0%, #000 92%, rgba(0, 0, 0, 0.6) 97%, transparent 100%);
}

/* 底部"向下弥散":把画面最底下那几行像素化开、继续往下延展。
   做法是三层 backdrop-filter(取的是身后的视频像素本身),模糊量由弱到强层层叠上去,
   而不是叠一层颜色盖住 —— 所以看到的是视频内容自己"扩散出去",不是白色朦胧。
   三层是同级元素(父级没有 backdrop-filter),各自都能取到视频;后画的层更模糊。 */
.poster-dissolve {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 28%;
  z-index: 2;
  pointer-events: none;
  -webkit-backdrop-filter: blur(12px) saturate(112%);
  backdrop-filter: blur(12px) saturate(112%);
  -webkit-mask-image: linear-gradient(180deg,
    transparent 14%, rgba(0, 0, 0, 0.45) 48%, transparent 82%);
  mask-image: linear-gradient(180deg,
    transparent 14%, rgba(0, 0, 0, 0.45) 48%, transparent 82%);
}
/* 上段:轻微模糊,让"开始化开"这件事没有硬边 */
.poster-dissolve::before {
  content: "";
  position: absolute;
  inset: 0;
  -webkit-backdrop-filter: blur(5px) saturate(108%);
  backdrop-filter: blur(5px) saturate(108%);
  -webkit-mask-image: linear-gradient(180deg,
    transparent 0%, rgba(0, 0, 0, 0.5) 22%, transparent 48%);
  mask-image: linear-gradient(180deg,
    transparent 0%, rgba(0, 0, 0, 0.5) 22%, transparent 48%);
}
/* 下段:最重的模糊,把画面最底沿彻底化开,像像素继续往画面外延展 */
.poster-dissolve::after {
  content: "";
  position: absolute;
  inset: 0;
  -webkit-backdrop-filter: blur(28px) saturate(112%);
  backdrop-filter: blur(28px) saturate(112%);
  -webkit-mask-image: linear-gradient(180deg,
    transparent 52%, rgba(0, 0, 0, 0.7) 84%, #000 100%);
  mask-image: linear-gradient(180deg,
    transparent 52%, rgba(0, 0, 0, 0.7) 84%, #000 100%);
}

/* 电影暗角:只在"上方"压暗,让导航和标题站得住;
   中下部留亮,让视频一路看得见,底部交给上面的弥散层收口 */
.poster-shade {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg,
      rgba(3, 5, 10, 0.66) 0%, rgba(3, 5, 10, 0.30) 22%, rgba(3, 5, 10, 0.12) 46%,
      rgba(3, 5, 10, 0.07) 76%, rgba(3, 5, 10, 0.04) 100%),
    radial-gradient(122% 72% at 50% 34%, transparent 32%, rgba(3, 5, 10, 0.34) 100%);
}

/* 胶片颗粒:极轻的一层噪点,消除"数码平"的感觉 */
.poster-screen::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 160px 160px;
}

/* 掠光:一道斜向光带极慢地扫过画面,让静止的海报"活"起来 */
.poster-screen::after {
  content: "";
  position: absolute;
  top: -25%;
  bottom: -25%;
  width: 34%;
  left: -50%;
  z-index: 1;
  pointer-events: none;
  transform: skewX(-14deg);
  background: linear-gradient(100deg,
    transparent 0%, rgba(255, 255, 255, 0.09) 44%,
    rgba(255, 255, 255, 0.16) 50%, rgba(255, 255, 255, 0.09) 56%, transparent 100%);
  animation: sweep 11s cubic-bezier(0.5, 0, 0.5, 1) 2.4s infinite;
}
/* 用 transform 位移(不碰 left),避免每帧触发重排 */
@keyframes sweep {
  0%        { transform: translateX(0) skewX(-14deg); opacity: 0; }
  10%       { opacity: 1; }
  55%, 100% { transform: translateX(490%) skewX(-14deg); opacity: 0; }
}

/* 标题组 */
.poster-center {
  position: relative;
  z-index: 2;
  max-width: 1500px;
}

/* 小字标头 */
.poster-kicker {
  font-family: var(--font-latin);
  font-size: clamp(0.58rem, 1.3vw, 0.76rem);
  font-weight: 400;
  letter-spacing: 0.62em;
  text-indent: 0.62em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.46);
  margin-bottom: 24px;
  animation: fadeUp 1.1s 0.1s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* 投影必须放在外层:
   标题是"背景裁剪成文字 + 填充透明",此时 text-shadow 会从透明的字形里透出来,
   结果是字发暗、阴影像是压在字上而不是落在字下。
   drop-shadow 作用在裁剪之后的合成结果上,阴影才会正确地出现在数字下方;
   又因为 Safari 对"同元素同时用 filter 与 background-clip:text"支持不稳,
   所以 filter 放在包裹元素上,裁剪留在 .poster-title 上。 */
.poster-title-wrap {
  filter:
    drop-shadow(0 20px 26px rgba(0, 0, 0, 0.72))
    drop-shadow(0 0 46px rgba(255, 255, 255, 0.20));
}

/* 主标题:近乎纯白,只留一丝冷调过渡避免死板 */
.poster-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(4.2rem, 19vw, 16rem);
  line-height: 0.86;
  letter-spacing: 0.01em;
  background: linear-gradient(178deg, #ffffff 0%, #ffffff 62%, #f6f9ff 74%, #ffffff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: titleIn 1.4s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.poster-title span {
  background: linear-gradient(178deg, #ffe9a8 0%, #f0b90b 46%, #ff8a00 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

@keyframes titleIn {
  from { opacity: 0; transform: translateY(38px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(26px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* 标题下一条金线 */
.poster-rule {
  width: clamp(120px, 26vw, 300px);
  height: 1px;
  margin: 32px auto 0;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  animation: ruleIn 1.6s 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
}
@keyframes ruleIn {
  from { opacity: 0; transform: scaleX(0.15); }
  to   { opacity: 1; transform: scaleX(1); }
}

.poster-tagline {
  font-family: var(--font-latin);
  font-size: clamp(0.64rem, 1.5vw, 0.88rem);
  font-weight: 400;
  letter-spacing: 0.5em;               /* 极宽字距:稀疏有呼吸感 */
  text-indent: 0.5em;
  color: rgba(255, 255, 255, 0.62);
  margin-top: 26px;
  text-transform: uppercase;
  animation: fadeUp 1.2s 0.55s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.poster-year {
  font-family: var(--font-latin);
  font-size: clamp(0.76rem, 1.8vw, 1rem);
  font-weight: 300;                    /* 细字重,与主标题 900 形成反差 */
  letter-spacing: 0.6em;
  text-indent: 0.6em;
  color: rgba(255, 255, 255, 0.30);
  margin-top: 16px;
  animation: fadeUp 1.2s 0.72s cubic-bezier(0.22, 1, 0.36, 1) both;
}

/* SCROLL 提示:一枚玻璃胶囊 */
.scroll-hint {
  position: absolute;
  z-index: 3;
  bottom: 64px;
  left: 50%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 22px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  backdrop-filter: blur(18px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.20);
  color: rgba(255, 255, 255, 0.60);
  font-family: var(--font-display);
  font-size: 0.58rem;
  letter-spacing: 4px;
  text-indent: 4px;
  cursor: pointer;
  animation: fadeUp 1.2s 1s cubic-bezier(0.22, 1, 0.36, 1) both;
  transition: color 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}
.scroll-hint:hover {
  color: #fff;
  background: rgba(240, 185, 11, 0.16);
  border-color: rgba(240, 185, 11, 0.48);
}
.scroll-hint .line {
  display: block;
  width: 34px;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.6), transparent);
  animation: hintLine 2.2s ease-in-out infinite;
}
@keyframes hintLine {
  0%, 100% { opacity: 0.35; transform: translateX(-3px); }
  50%      { opacity: 1;    transform: translateX(3px); }
}

/* ========== 内容区:极简长滚动 ========== */
.showcase {
  position: relative;
  padding: 132px 0;
  border-top: 1px solid var(--line);
}
/* 紧挨着海报的那一块不要分隔线:它正好落在视频接缝处,会看成一道缝 */
.poster-screen + .showcase { border-top: none; }

/* 区块标题行:序号 / 中文大标题 / 英文 / 查看全部 */
.showcase-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 48px;
}
.showcase-head .no {
  font-family: var(--font-latin);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--gold);
  transition: color 0.6s ease;
}
.showcase-head h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 4.2vw, 2.7rem);
  letter-spacing: 0.05em;
  line-height: 1.1;
}
.showcase-head .en {
  font-family: var(--font-latin);
  font-weight: 300;
  font-size: 0.7rem;
  letter-spacing: 0.45em;
  text-transform: uppercase;
  color: var(--faint);
  transition: color 0.6s ease;
}
.showcase-head .more {
  margin-left: auto;
  flex: none;
  font-family: var(--font-display);
  font-size: 0.82rem;
  letter-spacing: 2px;
  color: var(--muted);
  white-space: nowrap;
  transition: color 0.6s ease;
}
.showcase-head .more i {
  font-style: normal;
  display: inline-block;
  margin-left: 8px;
  transition: transform 0.25s;
}
.showcase-head .more:hover { color: var(--gold); }
.showcase-head .more:hover i { transform: translateX(5px); }

/* ---- 01 学生风采:未公布时的空状态(同样做成一块玻璃,别在板块里留一块"裸底") ---- */
.soon-inline {
  text-align: center;
  padding: 52px 24px 56px;
  border-radius: 22px;
  background: var(--glass-surface);
  -webkit-backdrop-filter: blur(26px) saturate(180%);
  backdrop-filter: blur(26px) saturate(180%);
  border: 1px solid var(--glass-brd);
  box-shadow: var(--glass-rim);
  transition: background-color 0.6s ease, border-color 0.6s ease, box-shadow 0.6s ease;
}
.soon-inline .soon-en {
  font-family: var(--font-latin);
  font-weight: 300;
  font-size: 0.7rem;
  letter-spacing: 0.6em;
  color: var(--gold);
  opacity: 0.85;
  transition: color 0.6s ease;
}
.soon-inline .soon-cn {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, 4rem);
  letter-spacing: 0.18em;
  text-indent: 0.18em;         /* 抵消字距造成的右偏 */
  color: var(--text);
  margin: 16px 0 12px;
  transition: color 0.6s ease;
}
.soon-inline .soon-note {
  color: var(--muted);
  font-size: 0.9rem;
  letter-spacing: 1px;
  transition: color 0.6s ease;
}

/* ---- 02 宿舍风采:横向滑轨(自动慢速滚动 + 左右箭头翻页) ---- */
.rail-wrap { position: relative; }

.showcase-rail {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  /* 上下留出 44px:卡片放到 1.28 倍时上下各长出一截,不留就会被 overflow 裁掉 */
  padding: 44px 20px 44px;
  -webkit-overflow-scrolling: touch;
  /* 自动滚动时滚动条会一直抖,而且现在有箭头做操作入口,直接隐藏 */
  scrollbar-width: none;
}
.showcase-rail::-webkit-scrollbar { display: none; }

/* 左右玻璃圆钮:浮在滑轨两端 */
.rail-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  padding-bottom: 3px;          /* 视觉居中:‹ › 字形本身偏上 */
  border-radius: 50%;
  font-family: var(--font-latin);
  font-size: 1.45rem;
  line-height: 1;
  color: var(--text);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  background: var(--glass-surface);
  -webkit-backdrop-filter: blur(26px) saturate(180%);
  backdrop-filter: blur(26px) saturate(180%);
  border: 1px solid var(--glass-brd);
  box-shadow: var(--glass-rim);
  transition: transform 0.25s ease, color 0.25s ease,
    background-color 0.6s ease, border-color 0.6s ease, box-shadow 0.6s ease;
}
.rail-btn:hover {
  color: var(--gold);
  border-color: var(--gold-line);
  transform: translateY(-50%) scale(1.06);
}
.rail-btn:active { transform: translateY(-50%) scale(0.94); }
.rail-btn.prev { left: 22px; }
.rail-btn.next { right: 22px; }

/* 玻璃卡:外框留 8px 内边距,模糊才在照片四周看得见 */
.dorm-mini {
  flex: 0 0 auto;
  width: 252px;
  padding: 8px;
  border-radius: 22px;
  background: var(--glass-surface);
  -webkit-backdrop-filter: blur(26px) saturate(180%);
  backdrop-filter: blur(26px) saturate(180%);
  border: 1px solid var(--glass-brd);
  box-shadow: var(--glass-rim);
  /* 缩放值由 JS 每帧写进 --s:越靠轨道中心越大、越靠两端越小。
     所以这里不能给 transform 加 transition,否则每帧都会跟不上。
     也不加 will-change:十几二十张带 backdrop-filter 的卡常驻合成层反而更卡,
     只在 0.76 秒的转动期间才有样式变化,浏览器自己会处理好。 */
  position: relative;
  z-index: var(--z, 1);         /* 中间那张放大后会压住邻居,靠这个排先后 */
  transform: scale(var(--s, 1));
  transform-origin: center center;
  transition: color 0.6s ease, background-color 0.6s ease,
    border-color 0.6s ease, box-shadow 0.6s ease;
}
.dorm-mini:hover { border-color: var(--gold-line); }
.dorm-mini-photo {
  display: block;
  aspect-ratio: 4 / 3;
  border-radius: 15px;
  overflow: hidden;
  background: var(--glass-bg);   /* 照片没加载出来时,底也是玻璃,不会露一块实色 */
}
.dorm-mini-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;  /* 竖拍照片优先保住人物头部 */
  transition: transform 0.45s ease;
}
.dorm-mini:hover .dorm-mini-photo img { transform: scale(1.05); }
.dorm-mini-body {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 13px 16px 15px;
}
.dorm-mini-body b {
  font-family: var(--font-latin);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--gold);
  transition: color 0.6s ease;
}
.dorm-mini-body em {
  font-style: normal;
  font-family: var(--font-display);
  font-size: 0.9rem;
  letter-spacing: 1px;
  color: var(--text);
  transition: color 0.6s ease;
}

/* ---- 03 高光时刻:照片墙 ---- */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 0 20px;
}
/* 玻璃相框:图片内缩 6px,四周露出一圈模糊玻璃 */
.showcase-grid .ph {
  display: block;
  aspect-ratio: 1 / 1;
  padding: 6px;
  overflow: hidden;
  border-radius: 20px;
  background: var(--glass-surface);
  -webkit-backdrop-filter: blur(26px) saturate(180%);
  backdrop-filter: blur(26px) saturate(180%);
  border: 1px solid var(--glass-brd);
  box-shadow: var(--glass-rim);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
    background-color 0.6s ease, border-color 0.6s ease, box-shadow 0.6s ease;
}
.showcase-grid .ph:hover { transform: translateY(-4px); border-color: var(--gold-line); }
.showcase-grid .ph img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 14px;
  transition: transform 0.5s ease, filter 0.4s ease;
  filter: saturate(0.86) brightness(0.94);
}
.showcase-grid .ph:hover img {
  transform: scale(1.06);
  filter: saturate(1) brightness(1);
}
/* 第 1 张跨两列,做视觉锚点 */
.showcase-grid .ph:first-child { grid-column: span 2; aspect-ratio: 2 / 1; }

.showcase-note {
  margin-top: 26px;
  text-align: center;
  font-family: var(--font-latin);
  font-weight: 300;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--faint);
  transition: color 0.6s ease;
}
.showcase-note i {
  font-style: normal;
  display: inline-block;
  margin: 0 12px;
  opacity: 0.5;
}

/* ---- 04 班级公告:玻璃条目 ---- */
.news-list { display: grid; gap: 14px; }
.news {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 24px 26px;
  border-radius: 18px;
  background: var(--glass-surface);
  -webkit-backdrop-filter: blur(26px) saturate(180%);
  backdrop-filter: blur(26px) saturate(180%);
  border: 1px solid var(--glass-brd);
  box-shadow: var(--glass-rim);
  transition: transform 0.25s, color 0.6s ease,
    background-color 0.6s ease, border-color 0.6s ease, box-shadow 0.6s ease;
}
.news:hover {
  border-color: var(--gold-line);
  transform: translateX(6px);
}
.news-date {
  flex: none;
  min-width: 130px;
  font-family: var(--font-latin);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--gold-2);
  transition: color 0.6s ease;
}
.news-date .pin {
  display: inline-block;
  margin-left: 10px;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--gold);
  color: #0b0f1a;
  font-family: var(--font-display);
  font-style: normal;
  font-size: 0.62rem;
  letter-spacing: 1px;
  vertical-align: middle;
}
.news p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
  transition: color 0.6s ease;
}
.news:hover p { color: var(--text); }

/* 逐条上浮动画(IntersectionObserver 触发) */
.io-rise {
  opacity: 0;
  transform: translateY(30px);
  /* 顺带把玻璃面的换色过渡也挂上,否则切主题时这块玻璃是硬切 */
  transition: opacity 0.7s ease, transform 0.7s ease,
    background-color 0.6s ease, border-color 0.6s ease, box-shadow 0.6s ease;
}
.io-rise.in { opacity: 1; transform: translateY(0); }

/* ========== 转场幕布 ========== */
/* 点击"查看全部"后幕布浮起遮住画面,再跳转 —— 不依赖浏览器特性,file:// 下同样平滑 */
.page-veil {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg0);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.38s cubic-bezier(0.4, 0, 0.2, 1);
}
.page-veil::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

/* 离开时:内容逐条上浮褪去,与幕布同步 */
body.leaving .showcase {
  opacity: 0;
  transform: translateY(-16px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}
body.leaving .page-veil { opacity: 1; }

/* ========== 尊重"减少动效" ========== */
@media (prefers-reduced-motion: reduce) {
  .poster-screen::after { animation: none; }
  .poster-title,
  .poster-kicker,
  .poster-rule,
  .poster-tagline,
  .poster-year,
  .scroll-hint { animation-duration: 1ms; animation-delay: 0ms; }
}

/* ========== 响应式 ========== */
@media (max-width: 820px) {
  .showcase { padding: 88px 0; }
  .showcase-head { flex-wrap: wrap; gap: 10px 14px; margin-bottom: 30px; }
  .showcase-head .more { margin-left: 0; }
  .showcase-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase-grid .ph:first-child { grid-column: span 2; }
  /* 手机上卡片本就占满屏宽,箭头会压住画面,交给手势滑动 + 自动滚动 */
  .rail-btn { display: none; }
  .news { flex-direction: column; gap: 8px; }
  .news-date { min-width: 0; }
  .scroll-hint { bottom: 52px; }
}

@media (max-width: 480px) {
  .poster-tagline { letter-spacing: 4px; text-indent: 4px; }
  .poster-year { letter-spacing: 6px; text-indent: 6px; }
  .dorm-mini { width: 216px; }
  .showcase-head .en { display: none; }
}