/* ============ 活动日历 · 二级页（甘特日历 + 活动板块） / 三级页（活动详情） ============
   主题配色与全站一致：深夜蓝黑底 + 霓虹青/幻紫 + 高亮金 */
:root{
  --bg:#0d1020; --bg-soft:#141830; --card:#1a1f3d; --card-hover:#222848; --line:#2a3055;
  --text:#eef1ff; --text-dim:#9aa3c7; --accent:#4fd8e8; --accent-2:#8b7cf6; --gold:#ffd166;
  --danger:#f06a8a; --ok:#5ad0a0; --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{overflow-y:scroll;scrollbar-gutter:stable}
body{background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.6}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 页头 */
header{position:sticky;top:0;z-index:50;background:rgba(13,16,32,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;letter-spacing:1px}
.logo img{width:38px;height:38px;border-radius:9px}
.logo small{display:block;font-size:10px;color:var(--text-dim);letter-spacing:2px;font-weight:400}
nav.main-nav{display:flex;gap:4px;margin-left:auto}
nav.main-nav .nav-item{position:relative;padding:8px 14px;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer}
nav.main-nav .nav-item:hover{background:var(--card)}
.nav-item .dropdown{position:absolute;top:100%;left:0;min-width:150px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:8px;display:none;box-shadow:0 10px 30px rgba(0,0,0,.5)}
.nav-item:hover .dropdown{display:block}
.dropdown a{display:block;padding:7px 12px;border-radius:8px;font-size:13px;color:var(--text-dim);font-weight:400}
.dropdown a:hover{background:var(--bg-soft);color:var(--accent)}
.dropdown a.on{color:var(--accent);font-weight:700}

/* 面包屑 + 页头 */
.crumb{padding:14px 0 0;color:var(--text-dim);font-size:13px}
.crumb a{color:var(--text-dim)}
.crumb a:hover{color:var(--accent)}
.crumb b{color:var(--accent);font-weight:600}
.page-head{padding:20px 0 14px}
.page-head h1{font-size:28px;font-weight:800;display:flex;align-items:center;gap:12px;letter-spacing:1px}
.page-head h1::before{content:"";width:6px;height:28px;border-radius:3px;background:linear-gradient(180deg,var(--accent),var(--accent-2))}
.page-head h1 small{font-size:13px;color:var(--text-dim);font-weight:500;letter-spacing:0}
.page-head p{color:var(--text-dim);font-size:13px;margin-top:6px}

.note-bar{margin:2px 0 18px;padding:12px 14px;border:1px solid rgba(79,216,232,.4);border-radius:12px;background:rgba(79,216,232,.06);font-size:13px;color:#cfe9ee;line-height:1.9;display:flex;flex-wrap:wrap;gap:4px 16px;align-items:center}
.note-bar b{color:var(--accent)}
.note-bar .dim{color:var(--text-dim)}
.note-bar .legend{margin-left:auto;display:flex;gap:10px;font-size:11.5px;color:var(--text-dim);flex-wrap:wrap}
.note-bar .legend i{display:inline-block;width:11px;height:11px;border-radius:3px;margin-right:4px;vertical-align:-1px}

.section-title{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;margin:26px 0 12px}
.section-title::before{content:"";width:6px;height:22px;border-radius:3px;background:linear-gradient(180deg,var(--accent),var(--accent-2))}
.section-title small{font-size:12px;color:var(--text-dim);font-weight:500}

/* 状态点颜色 */
.dot-ongoing{background:linear-gradient(135deg,var(--accent),var(--accent-2))}
.dot-upcoming{background:linear-gradient(135deg,var(--gold),#ff9db4)}
.dot-ending{background:var(--danger)}
.dot-ended{background:#5b6486}
.dot-permanent{background:var(--accent-2)}

/* ---------- 甘特图（日历） ---------- */
.gantt-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;overflow:hidden}
.gantt-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:10px}
.gantt-head .today{font-size:13px;color:var(--text-dim)}
.gantt-head .today b{color:var(--accent)}
.gantt-scroll{overflow-x:auto;padding-bottom:6px}
.gantt{min-width:860px}
.g-col-label{width:190px;flex-shrink:0}
.g-line{display:flex;align-items:stretch}
.g-mline{position:relative;height:38px;flex:1;min-width:0}
.g-mline span{position:absolute;left:2px;top:2px;font-size:11px;color:var(--text-dim);letter-spacing:1px}
.g-mline::after{content:"";position:absolute;left:0;top:18px;bottom:0;width:1px;background:rgba(42,48,85,.6)}
.g-row{display:flex;align-items:stretch;cursor:pointer;border-radius:10px;transition:background .15s}
.g-row:hover{background:var(--bg-soft)}
.g-row + .g-row{margin-top:2px}
.gantt.collapsed .g-row.is-collapsed{display:none}
.gantt-more{display:flex;justify-content:center;padding:12px 0 2px}
.gantt-toggle{display:inline-flex;align-items:center;gap:6px;padding:7px 18px;border:1px solid var(--line);border-radius:999px;background:var(--bg-soft);color:var(--text-dim);font-size:13px;font-weight:600;transition:.15s}
.gantt-toggle:hover{border-color:var(--accent);color:var(--accent);background:var(--card)}
.gantt-toggle .arrow{font-size:11px;line-height:1}
.g-label{padding:7px 10px 7px 0;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.g-label b{font-size:14px;font-weight:700;max-width:105px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.g-label .tag{font-size:10.5px;border-radius:6px;padding:1px 6px;border:1px solid var(--line);color:var(--text-dim);white-space:nowrap}
.g-label .tag.st-ongoing{color:var(--accent);border-color:rgba(79,216,232,.5)}
.g-label .tag.st-upcoming{color:var(--gold);border-color:rgba(255,209,102,.5)}
.g-label .tag.st-ending{color:#ff9db4;border-color:rgba(240,106,138,.55)}
.g-label .tag.st-ended{color:#7c86a8;border-color:var(--line)}
.g-label .tag.st-permanent{color:#b6a9ff;border-color:rgba(139,124,246,.5)}
.g-track-wrap{flex:1;position:relative;min-width:0}
.g-track{position:relative;height:40px;border-left:1px solid var(--line);margin:4px 0}
.g-bar{position:absolute;top:7px;height:26px;border-radius:8px;display:flex;align-items:center;padding:0 10px;font-size:12px;font-weight:600;overflow:hidden;white-space:nowrap;transition:filter .15s}
.g-row:hover .g-bar{filter:brightness(1.15)}
.g-bar.b-ongoing{background:linear-gradient(90deg,rgba(79,216,232,.9),rgba(139,124,246,.85));color:#081019;box-shadow:0 0 14px rgba(79,216,232,.28)}
.g-bar.b-upcoming{background:rgba(255,209,102,.12);border:1px dashed rgba(255,209,102,.75);color:var(--gold)}
.g-bar.b-ending{background:linear-gradient(90deg,rgba(240,106,138,.9),rgba(255,157,180,.85));color:#1a0c14}
.g-bar.b-ended{background:rgba(91,100,134,.55);color:#c6cbe0}
.g-bar.b-permanent{background:repeating-linear-gradient(45deg,rgba(139,124,246,.35) 0 8px,rgba(139,124,246,.16) 8px 16px);border:1px solid rgba(139,124,246,.7);color:#e2dcff}
.g-today{position:absolute;top:-2px;bottom:-2px;width:2px;background:var(--danger);z-index:2;pointer-events:none}
.g-today::before{content:"今";position:absolute;top:-14px;left:-7px;font-size:9px;color:var(--danger);font-weight:800}

/* ---------- 活动板块 ---------- */
.list-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.list-head .count{font-size:12px;color:var(--text-dim)}
.list-head .count b{color:var(--accent)}
.act-list{display:flex;flex-direction:column;gap:14px}
.act-card{display:flex;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;transition:.16s}
.act-card:hover{border-color:var(--accent-2);transform:translateY(-1px)}
.act-cover{flex-shrink:0;width:280px;height:157px;border-radius:10px;overflow:hidden;border:1px solid var(--line)}
.act-cover img{width:100%;height:100%;object-fit:cover;transition:transform .25s}
.act-card:hover .act-cover img{transform:scale(1.04)}
.act-body{flex:1;min-width:0;display:flex;flex-direction:column}
.act-tags{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:6px}
.tag{font-size:11px;border-radius:6px;padding:1px 8px;border:1px solid var(--line);color:var(--text-dim)}
.tag.t-ver{color:var(--accent);border-color:rgba(79,216,232,.45)}
.tag.t-type{color:#b6a9ff;border-color:rgba(139,124,246,.5)}
.tag.t-st{color:var(--ok);border-color:rgba(90,208,160,.5)}
.tag.t-st.st-ending{color:#ff9db4;border-color:rgba(240,106,138,.55)}
.tag.t-st.st-upcoming{color:var(--gold);border-color:rgba(255,209,102,.5)}
.tag.t-st.st-ended{color:#7c86a8;border-color:var(--line)}
.tag.t-st.st-permanent{color:#b6a9ff;border-color:rgba(139,124,246,.5)}
.act-name{font-size:19px;font-weight:800;color:var(--text);display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.act-name small{font-size:12px;color:var(--text-dim);font-weight:500}
.act-meta{font-size:13px;color:var(--text-dim);margin-top:6px}
.act-meta b{color:var(--text)}
.act-meta .remain{color:var(--accent);font-weight:700}
.act-meta .remain.soon{color:var(--danger)}
.act-meta .remain.ended{color:#7c86a8;font-weight:600}
.act-summary{font-size:13px;color:#c3c9e4;line-height:1.75;margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.act-btns{margin-top:auto;padding-top:10px;display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-block;padding:7px 16px;border-radius:9px;font-size:13px;font-weight:600;border:1px solid var(--line);color:var(--text);transition:.15s}
.btn:hover{border-color:var(--accent);color:var(--accent)}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));border:none;color:#081019}
.btn.primary:hover{filter:brightness(1.1);color:#081019}
.empty-tip{padding:26px;text-align:center;color:var(--text-dim);font-size:13px;background:var(--card);border:1px dashed var(--line);border-radius:12px}

/* ---------- 详情页 ---------- */
.detail-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.detail-hero{display:flex;gap:20px;padding:18px}
.detail-hero .cover{flex-shrink:0;width:420px;border-radius:12px;overflow:hidden;border:1px solid var(--line)}
.detail-hero .cover img{width:100%;height:auto;object-fit:cover}
.detail-info{flex:1;min-width:0}
.detail-info h1{font-size:30px;font-weight:800;display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.detail-info h1 small{font-size:14px;color:var(--text-dim);font-weight:500}
.detail-tags{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0 14px}
.detail-rows{display:flex;flex-direction:column;gap:9px}
.d-row{display:flex;gap:12px;font-size:14px}
.d-row .k{width:88px;flex-shrink:0;color:var(--text-dim)}
.d-row .v{color:var(--text);font-weight:600}
.d-row .v.remain-big{font-size:22px;font-weight:800;color:var(--accent)}
.d-row .v.remain-big.soon{color:var(--danger)}
.d-row .v.remain-big.ended{color:#7c86a8}
.d-row .v.permanent{color:#b6a9ff}
.detail-summary{margin:16px 0;padding:14px 16px;background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;color:#c3c9e4;font-size:14px;line-height:1.9}
.detail-btns{display:flex;gap:10px;flex-wrap:wrap;margin-top:4px}
.detail-src{margin-top:14px;font-size:11.5px;color:#7c86a8;line-height:1.7;word-break:break-all}
.detail-src b{color:var(--text-dim);font-weight:600}
.detail-foot{padding:14px 18px;border-top:1px solid var(--line);display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.detail-foot .back{font-size:13px;color:var(--accent)}
.other-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.other-card{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.15s;display:block}
.other-card:hover{border-color:var(--accent-2);transform:translateY(-2px)}
.other-card img{width:100%;height:110px;object-fit:cover}
.other-card .oc-body{padding:10px 12px}
.other-card .oc-name{font-size:14px;font-weight:700}
.other-card .oc-meta{font-size:12px;color:var(--text-dim);margin-top:3px}
.not-found{padding:34px 20px;text-align:center;color:var(--text-dim)}
.not-found h2{font-size:20px;color:var(--text);margin-bottom:10px}

@media(max-width:900px){
  .act-card{flex-direction:column}
  .act-cover{width:100%;height:auto;aspect-ratio:16/9}
  .detail-hero{flex-direction:column}
  .detail-hero .cover{width:100%}
}
@media(max-width:767px){
  nav.main-nav{display:none}
  .note-bar .legend{margin-left:0;width:100%}
  .g-col-label{width:150px}
  .g-label b{max-width:70px}
  .gantt{min-width:760px}
}