/* ============================================================
   动态层样式：两栏布局 / 侧栏 / 骨架屏 / 悬停预览 / 搜索联想 / 入场动画
   ============================================================ */

/* ---------- 主区 + 侧栏 ---------- */
:root{--head-h:137px}                     /* JS 会写入真实头部高度 */
.pv-home{display:grid;grid-template-columns:minmax(0,1fr) 336px;gap:32px;align-items:start;padding-top:6px}
.side-col{display:flex;flex-direction:column;gap:20px;position:sticky;
  top:calc(var(--head-h) + 18px)}
/* 移动端：把"分类速览"提到主区之前，热榜/图文留在后面，避免先滚过 9 张卡片 */
@media(max-width:1080px){
  .pv-home{display:flex;flex-direction:column;gap:26px}
  .side-col{display:contents;position:static}
  .feed-col{order:2}
  .side-col > .side-card:nth-child(1){order:3}
  .side-col > .side-card:nth-child(2){order:1}
  .side-col > .side-card:nth-child(3){order:4}
  .side-col > .side-card:nth-child(4){order:5}
  .side-card{position:static}
}
.side-card{
  background:#fff;border:1px solid var(--pv-line);border-radius:20px;padding:20px 20px 16px;
  box-shadow:0 24px 50px -44px rgba(14,12,10,.5)
}
.side-card h5{
  margin:0 0 14px;font-size:10px;font-weight:800;letter-spacing:.18em;text-transform:uppercase;
  color:var(--pv-mute)
}
.side-more{display:block;margin-top:10px;font-size:12px;font-weight:750;color:var(--pv-coral)}
.side-more:hover{text-decoration:underline}

/* 侧栏热榜 */
.pv-rank.light .rank-row{
  display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px dashed var(--pv-line);
  transition:padding .16s,color .16s
}
.pv-rank.light .rank-row:last-child{border-bottom:0}
.pv-rank.light .rank-row:hover{padding-left:6px;color:var(--pv-coral)}
.pv-rank.light .rank-row .n{
  flex:0 0 22px;font-size:11px;font-weight:800;color:#bdb2a6;letter-spacing:.04em
}
.pv-rank.light .rank-row:first-child .n,
.pv-rank.light .rank-row:nth-child(2) .n,
.pv-rank.light .rank-row:nth-child(3) .n{color:var(--pv-coral)}
.pv-rank.light .rank-row b{
  flex:1;min-width:0;font-size:12.8px;font-weight:650;line-height:1.45;
  overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical
}
.pv-rank.light .rank-row .v{font-size:11px;color:var(--pv-mute);flex:0 0 auto}

/* 分类胶囊（竖排两列） */
.cat-chips{display:flex;flex-wrap:wrap;gap:8px}
.cat-chips a{
  font-size:12px;padding:7px 12px;border-radius:999px;background:var(--pv-sand);
  color:var(--pv-ink-2);transition:.16s
}
.cat-chips a:hover{background:var(--pv-ink);color:#fff}
.cat-chips a b{margin-left:6px;font-size:10px;font-weight:800;color:var(--pv-mute)}
.cat-chips a:hover b{color:rgba(255,255,255,.7)}

/* 侧栏图文 */
.side-post{display:flex;gap:11px;align-items:center;padding:9px 0;border-bottom:1px dashed var(--pv-line)}
.side-post:last-child{border-bottom:0}
.side-post .t{flex:0 0 76px;height:52px;border-radius:11px;overflow:hidden;background:var(--pv-sand);display:block}
.side-post .t img{width:100%;height:100%;object-fit:cover}
.side-post .n{
  font-size:12.6px;line-height:1.45;color:var(--pv-ink-2);
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical
}
.side-post:hover .n{color:var(--pv-coral)}

/* ---------- 动态切换标签 ---------- */
.feed-tabs{display:flex;gap:6px;background:var(--pv-sand);padding:4px;border-radius:999px}
.ftab{
  border:0;background:transparent;font-size:12.5px;font-weight:750;color:var(--pv-ink-2);
  padding:8px 15px;border-radius:999px;cursor:pointer;transition:.18s;white-space:nowrap
}
.ftab:hover{color:var(--pv-ink)}
.ftab.on{background:#fff;color:var(--pv-ink);box-shadow:0 4px 12px -8px rgba(14,12,10,.6)}
.ftab span{display:inline-block;transition:transform .35s}
.ftab:active span{transform:rotate(180deg)}
@media(max-width:640px){.feed-tabs{width:100%;justify-content:space-between}}

/* 切换时的过渡 */
.feed-grid{transition:opacity .22s ease,transform .22s ease}
.feed-grid.switching{opacity:.15;transform:translateY(6px)}

/* 上传页 */
.up-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
@media(max-width:900px){.up-grid{grid-template-columns:1fr}}
.up-card{background:#fff;border:1px solid var(--pv-line);border-radius:20px;padding:26px 24px 28px;
  display:flex;flex-direction:column;gap:7px;box-shadow:0 24px 50px -44px rgba(14,12,10,.5)}
.up-card h5{margin:0 0 8px;font-size:11px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;
  color:var(--pv-ink)}
.up-card label{margin-top:10px;font-size:12.5px;font-weight:650;color:var(--pv-ink-2)}
.up-card label span{color:var(--pv-coral)}
.up-card input[type=text],.up-card input[type=password],.up-card select,.up-card textarea{
  width:100%;border:1px solid var(--pv-line);border-radius:12px;background:#fff;
  padding:11px 13px;font-size:13.5px;font-family:inherit;color:var(--pv-ink);outline:none;transition:.16s}
.up-card textarea{resize:vertical;line-height:1.7}
.up-card input[type=file]{font-size:12.5px;color:var(--pv-mute);padding:8px 0}
.up-card input:focus,.up-card select:focus,.up-card textarea:focus{
  border-color:#d9cec2;box-shadow:0 0 0 4px rgba(214,75,42,.08)}
.up-btn{margin-top:18px;height:48px;justify-content:center}

/* 播放页：静音自动播放提示 */
.player-wrap{position:relative}
.unmute{
  position:absolute;left:14px;bottom:14px;z-index:5;
  background:rgba(14,12,10,.8);color:#fff;border:0;border-radius:999px;
  padding:9px 16px;font-size:12.5px;font-weight:700;cursor:pointer;
  backdrop-filter:blur(6px);transition:.18s
}
.unmute:hover{background:var(--pv-coral)}
.unmute.off{display:none}
.play-overlay{position:absolute;inset:0;z-index:6;display:flex;align-items:center;justify-content:center;
  gap:12px;border:0;cursor:pointer;background:rgba(10,9,8,.32);color:#fff;transition:.2s}
.play-overlay span{width:64px;height:64px;border-radius:50%;background:rgba(255,255,255,.94);color:#17130f;
  display:grid;place-items:center;font-size:24px;box-shadow:0 16px 34px rgba(0,0,0,.34)}
.play-overlay em{font-style:normal;font-size:13px;font-weight:700;letter-spacing:.04em}
.play-overlay:hover{background:rgba(10,9,8,.45)}
.play-overlay[hidden]{display:none}

/* 卡片标题固定两行，避免同行卡片高度参差 */
.vcard h3{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  min-height:2.86em}
.acard h3{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* 侧栏：纯文字条目 */
.side-link{display:block;padding:9px 0;border-bottom:1px dashed var(--pv-line)}
.side-link:last-of-type{border-bottom:0}
.side-link .n{display:block;font-size:12.6px;line-height:1.45;color:var(--pv-ink-2)}
.side-link .m{display:block;margin-top:3px;font-size:11px;color:var(--pv-mute)}
.side-link:hover .n{color:var(--pv-coral)}

/* hidden 属性在设置了 display 的元素上会失效，这里显式兜住 */
.side-card[hidden]{display:none !important}

/* 「关于我们」唤起时：淡入 + 描边高亮 */
.side-about.about-open{animation:aboutIn .5s cubic-bezier(.22,.9,.2,1);border-color:rgba(214,75,42,.45)}
@keyframes aboutIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* 侧栏关于卡 */
.side-about p{margin:0 0 14px;font-size:12.5px;line-height:1.75;color:var(--pv-mute)}
.about-stats{display:flex;gap:18px;padding:12px 0 4px;border-top:1px dashed var(--pv-line)}
.about-stats b{display:block;font-size:17px;font-weight:850;letter-spacing:-.4px;color:var(--pv-ink);line-height:1}
.about-stats span{font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--pv-mute)}

/* 侧栏投稿引导卡（已停用，保留类名兜底） */
.side-cta p{margin:0 0 12px;font-size:12.5px;line-height:1.7;color:var(--pv-mute)}
.side-cta ul{margin:0 0 16px;padding:0;list-style:none}
.side-cta li{position:relative;padding:4px 0 4px 16px;font-size:12px;color:var(--pv-ink-2)}
.side-cta li::before{content:"✓";position:absolute;left:0;color:var(--pv-coral);font-size:11px}
.pv-btn.sm{height:42px;padding:0 18px;font-size:13px}

/* "换一批"是动作，不参与选中态 */
.ftab.action{color:var(--pv-coral)}
.ftab.action:hover{background:#fff}

/* ---------- 无限滚动 ---------- */
.feed-foot{display:flex;align-items:center;gap:14px;margin-top:34px;flex-wrap:wrap}
.btn-load{
  display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 24px;border-radius:999px;
  background:var(--pv-ink);color:#fff;border:0;font-size:13.5px;font-weight:750;cursor:pointer;
  transition:.18s
}
.btn-load:hover{background:var(--pv-coral);gap:12px}
.feed-hint{font-size:12px;color:var(--pv-mute)}

/* ---------- 悬停预览 ---------- */
.thumb, .shot{position:relative}
video.preview{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:2;
  animation:fadein .35s ease
}
@keyframes fadein{from{opacity:0}to{opacity:1}}

/* ---------- 入场动画 ---------- */
.vcard, .acard, .pv-feat, .side-card, .pv-sec-head{
  opacity:0;transform:translateY(16px);
  transition:opacity .5s cubic-bezier(.2,.8,.2,1),transform .5s cubic-bezier(.2,.8,.2,1)
}
.vcard.in, .acard.in, .pv-feat.in, .side-card.in, .pv-sec-head.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .vcard,.acard,.pv-feat,.side-card,.pv-sec-head{opacity:1;transform:none}
}

/* ---------- 搜索联想 ---------- */
.sx-suggest{
  position:absolute;left:0;right:0;top:calc(100% + 10px);z-index:40;
  background:#fff;border:1px solid var(--pv-line);border-radius:16px;overflow:hidden;
  box-shadow:0 30px 60px -34px rgba(14,12,10,.55);display:none
}
.sx-suggest.on{display:block}
.sxi{display:flex;align-items:center;gap:10px;padding:11px 14px;border-bottom:1px solid #f4eee7}
.sxi:last-of-type{border-bottom:0}
.sxi .k{
  flex:0 0 auto;font-size:10px;font-weight:800;letter-spacing:.06em;color:var(--pv-mute);
  border:1px solid var(--pv-line);border-radius:6px;padding:2px 6px
}
.sxi .t{
  font-size:13px;color:var(--pv-ink-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap
}
.sxi:hover,.sxi.on{background:#faf7f3}
.sxi:hover .t,.sxi.on .t{color:var(--pv-coral)}
.sxf{padding:9px 14px;font-size:11px;color:var(--pv-mute);background:#faf7f3}
@media(max-width:760px){.sx-suggest{position:fixed;left:12px;right:12px;top:auto}}

/* 上传页：单表单 + 切换标签 */
.up-single{max-width:720px}
.up-tabs{display:flex;gap:6px;background:var(--pv-sand);padding:4px;border-radius:999px;margin-bottom:8px;width:fit-content}
.up-tab{border:0;background:transparent;font-size:13px;font-weight:750;color:var(--pv-ink-2);
  padding:9px 16px;border-radius:999px;cursor:pointer;transition:.18s}
.up-tab.on{background:#fff;color:var(--pv-ink);box-shadow:0 4px 12px -8px rgba(14,12,10,.6)}