:root{
  --bg:#0e1116; --bg-2:#151a22; --bg-3:#1b222c; --line:#252d3a;
  --fg:#e8edf4; --fg-2:#9aa7b8; --fg-3:#68758a;
  --accent:#4a9eff; --accent-2:#2f7fe0; --warn:#f5a524; --danger:#f0616d;
  --r:12px; --r-sm:8px;
  --shadow:0 8px 28px rgba(0,0,0,.45);
  --topbar-h:56px;
}
@media (prefers-color-scheme: light){
  :root{
    --bg:#f5f7fa; --bg-2:#fff; --bg-3:#eef1f6; --line:#dfe4ec;
    --fg:#131720; --fg-2:#5a6577; --fg-3:#8a94a6;
    --shadow:0 6px 22px rgba(20,30,50,.12);
  }
}

*{box-sizing:border-box}
/* .gate/.player/.toast 带 display 声明，会盖掉 UA 的 [hidden]{display:none}，这里强制回来 */
[hidden]{display:none !important}
html,body{height:100%}
body{
  margin:0; background:var(--bg); color:var(--fg);
  font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",
       "Hiragino Sans GB",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased; overscroll-behavior-y:none;
}
button,input{font:inherit; color:inherit}
button{cursor:pointer; border:0; background:none}
::selection{background:var(--accent); color:#fff}

/* ---------------- 口令门 ---------------- */
.gate{position:fixed; inset:0; z-index:100; display:grid; place-items:center;
  background:radial-gradient(1200px 600px at 50% -10%, #1d2836 0%, var(--bg) 60%);}
.gate-box{width:min(340px,88vw); background:var(--bg-2); border:1px solid var(--line);
  border-radius:16px; padding:32px 26px; text-align:center; box-shadow:var(--shadow)}
.gate-logo{width:46px;height:46px;margin:0 auto 14px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--accent),var(--accent-2));color:#fff;font-size:19px}
.gate-box h1{margin:0 0 4px; font-size:19px; font-weight:650}
.gate-hint{margin:0 0 20px; color:var(--fg-2); font-size:13px}
.gate-box input{width:100%; padding:11px 13px; border-radius:var(--r-sm);
  border:1px solid var(--line); background:var(--bg-3); outline:none}
.gate-box input:focus{border-color:var(--accent)}
.gate-box button{width:100%; margin-top:12px; padding:11px; border-radius:var(--r-sm);
  background:var(--accent); color:#fff; font-weight:600}
.gate-box button:hover{background:var(--accent-2)}
.gate-err{margin-top:12px; color:var(--danger); font-size:13px}

/* ---------------- 顶栏 ---------------- */
.topbar{
  position:sticky; top:0; z-index:20; height:var(--topbar-h);
  display:flex; align-items:center; gap:14px; padding:0 16px;
  background:color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter:blur(14px); border-bottom:1px solid var(--line);
}
.brand{display:flex; align-items:center; gap:9px; cursor:pointer; user-select:none; flex:none}
.brand-mark{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;font-size:11px;
  background:linear-gradient(140deg,var(--accent),var(--accent-2));color:#fff}
.brand-name{font-weight:650; letter-spacing:.3px}
.search-wrap{flex:1; max-width:520px}
#search{width:100%; padding:8px 13px; border-radius:999px; border:1px solid var(--line);
  background:var(--bg-2); outline:none}
#search:focus{border-color:var(--accent)}
.topbar-actions{display:flex; gap:6px; margin-left:auto; flex:none}
.icon-btn{padding:7px 11px; border-radius:var(--r-sm); background:var(--bg-2);
  border:1px solid var(--line); color:var(--fg-2); font-size:14px; white-space:nowrap}
.icon-btn:hover{color:var(--fg); border-color:var(--accent)}
.icon-btn.ghost{background:none; border-color:transparent; font-size:19px; padding:4px 10px}
.icon-btn.spin{animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------------- 布局 ---------------- */
.body{display:flex; align-items:flex-start; min-height:calc(100vh - var(--topbar-h))}
.sidebar{
  position:sticky; top:var(--topbar-h); flex:none; width:216px; padding:16px 10px 40px;
  max-height:calc(100vh - var(--topbar-h)); overflow:auto;
  border-right:1px solid var(--line);
}
.side-group{margin-bottom:18px}
.side-label{padding:0 10px 7px; font-size:11px; letter-spacing:.9px; text-transform:uppercase; color:var(--fg-3)}
.side-item{
  display:flex; align-items:center; gap:8px; width:100%; text-align:left;
  padding:7px 10px; border-radius:var(--r-sm); color:var(--fg-2); font-size:14px;
}
.side-item:hover{background:var(--bg-2); color:var(--fg)}
.side-item.active{background:var(--bg-3); color:var(--fg); font-weight:600}
.side-item .n{margin-left:auto; font-size:12px; color:var(--fg-3); font-variant-numeric:tabular-nums}
.side-item .ic{opacity:.7}

.main{flex:1; min-width:0; padding:18px 20px 60px}
.bar{display:flex; align-items:baseline; gap:12px; margin-bottom:14px}
.bar-title{font-size:17px; font-weight:650}
.bar-meta{color:var(--fg-3); font-size:13px}
.notice{margin-bottom:14px; padding:10px 13px; border-radius:var(--r-sm);
  background:color-mix(in srgb,var(--warn) 14%,transparent);
  border:1px solid color-mix(in srgb,var(--warn) 35%,transparent); font-size:13px}

/* ---------------- 卡片网格 ---------------- */
.grid{display:grid; gap:16px; grid-template-columns:repeat(auto-fill,minmax(232px,1fr))}
.card{background:var(--bg-2); border:1px solid var(--line); border-radius:var(--r);
  overflow:hidden; cursor:pointer; transition:transform .14s, border-color .14s, box-shadow .14s}
.card:hover{transform:translateY(-2px); border-color:var(--accent); box-shadow:var(--shadow)}
.card.playing{border-color:var(--accent)}
.thumb{position:relative; aspect-ratio:16/9; background:var(--bg-3); overflow:hidden}
/* img 必须定位并压在占位符之上，否则未定位的 img 会先于 absolute 的 .ph 绘制 */
.thumb img{position:absolute; inset:0; z-index:1; width:100%; height:100%;
  object-fit:cover; display:block; opacity:0; transition:opacity .25s}
.thumb img.on{opacity:1}
.thumb .ph{position:absolute; inset:0; z-index:0; display:grid; place-items:center; color:var(--fg-3); font-size:26px}
.thumb .dur,.thumb .badge,.thumb .play,.seen{z-index:2}
.thumb .dur{position:absolute; right:6px; bottom:6px; padding:1px 6px; border-radius:4px;
  background:rgba(0,0,0,.72); color:#fff; font-size:11.5px; font-variant-numeric:tabular-nums}
.thumb .badge{position:absolute; left:6px; top:6px; padding:1px 6px; border-radius:4px;
  background:rgba(0,0,0,.72); color:var(--warn); font-size:11px}
.thumb .play{position:absolute; inset:0; display:grid; place-items:center; opacity:0; transition:opacity .16s;
  background:linear-gradient(transparent,rgba(0,0,0,.35))}
.card:hover .thumb .play{opacity:1}
.thumb .play span{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  background:rgba(255,255,255,.92); color:#111; font-size:15px; padding-left:3px}
.seen{position:absolute; left:0; right:0; bottom:0; height:3px; background:rgba(255,255,255,.18)}
.seen i{display:block; height:100%; background:var(--accent)}
.meta{padding:9px 11px 11px}
.meta .t{font-size:14px; font-weight:550; line-height:1.35;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden}
.meta .s{margin-top:5px; font-size:12px; color:var(--fg-3);
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis}

.empty{padding:80px 0; text-align:center; color:var(--fg-3)}
.empty-mark{font-size:34px; opacity:.5; margin-bottom:8px}

/* ---------------- 播放器 ---------------- */
.player{position:fixed; inset:0; z-index:40; background:var(--bg); display:flex; flex-direction:column; overflow:auto}
.player-head{display:flex; align-items:center; gap:12px; padding:10px 16px; flex:none;
  border-bottom:1px solid var(--line)}
.player-title{flex:1; min-width:0; font-weight:600; font-size:15px;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
.player-head-right{flex:none}
.loopgroup{display:flex; background:var(--bg-2); border:1px solid var(--line); border-radius:999px; padding:3px}
.loopgroup button{padding:5px 12px; border-radius:999px; font-size:13px; color:var(--fg-2); white-space:nowrap}
.loopgroup button:hover{color:var(--fg)}
.loopgroup button.on{background:var(--accent); color:#fff}

.stage{position:relative; background:#000; flex:none}
#video{display:block; width:100%; max-height:calc(100vh - 260px); min-height:220px; background:#000}
.stage-err{position:absolute; inset:0; display:grid; place-content:center; text-align:center; gap:10px;
  padding:24px; background:rgba(0,0,0,.9); color:#fff; font-size:14px; line-height:1.7}

.player-foot{display:flex; align-items:center; gap:10px; padding:12px 16px; flex:none; flex-wrap:wrap}
.pf-left{display:flex; gap:8px; flex-wrap:wrap}
.pf-right{margin-left:auto; color:var(--fg-3); font-size:12.5px}
.pill{padding:6px 13px; border-radius:999px; background:var(--bg-2); border:1px solid var(--line);
  color:var(--fg-2); font-size:13px; white-space:nowrap}
.pill:hover{color:var(--fg); border-color:var(--accent)}
.pill.toggle{display:inline-flex; align-items:center; gap:6px; cursor:pointer}
.pill.toggle input{accent-color:var(--accent); margin:0}

.upnext{padding:6px 16px 44px}
.upnext-title{font-size:13px; color:var(--fg-3); margin-bottom:8px; letter-spacing:.5px}
.upnext-list{display:flex; flex-direction:column; gap:2px}
.un{display:flex; align-items:center; gap:11px; padding:7px 9px; border-radius:var(--r-sm); cursor:pointer}
.un:hover{background:var(--bg-2)}
.un.on{background:var(--bg-3)}
.un .idx{width:22px; text-align:right; font-size:12px; color:var(--fg-3); font-variant-numeric:tabular-nums; flex:none}
.un .th{width:74px; aspect-ratio:16/9; border-radius:5px; object-fit:cover; background:var(--bg-3); flex:none}
.un .tx{flex:1; min-width:0}
.un .tx b{display:block; font-size:13.5px; font-weight:550;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
.un .tx small{color:var(--fg-3); font-size:11.5px}
.un.on .tx b{color:var(--accent)}

.toast{position:fixed; left:50%; bottom:26px; transform:translateX(-50%); z-index:60;
  padding:9px 16px; border-radius:999px; background:var(--bg-3); border:1px solid var(--line);
  box-shadow:var(--shadow); font-size:13.5px}

/* ---------------- 手机 ---------------- */
@media (max-width:860px){
  .topbar{gap:10px; padding:0 12px}
  .brand-name{display:none}
  #sortLabel{display:none}
  .body{display:block}
  .sidebar{
    position:sticky; top:var(--topbar-h); width:auto; max-height:none; overflow-x:auto; overflow-y:hidden;
    display:flex; gap:6px; padding:9px 12px; border-right:0; border-bottom:1px solid var(--line);
    background:var(--bg); -webkit-overflow-scrolling:touch; scrollbar-width:none;
  }
  .sidebar::-webkit-scrollbar{display:none}
  .side-group{margin:0; display:flex; gap:6px}
  .side-label{display:none}
  .side-item{width:auto; white-space:nowrap; border:1px solid var(--line); background:var(--bg-2); padding:6px 12px}
  .side-item .n{margin-left:5px}
  .main{padding:14px 12px 50px}
  .grid{gap:12px; grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
  .player-head{flex-wrap:wrap}
  .player-head-right{width:100%; order:3}
  .loopgroup{width:100%; justify-content:space-between}
  .loopgroup button{flex:1; padding:6px 4px; font-size:12px}
  #video{max-height:56vh}
  .pf-right{width:100%; margin:4px 0 0}
}