/* =====================================================================
 * AI云学堂 门户前端 · 样式表
 * 品牌色：嘉骅橙 #F48D00 / AI云学堂点缀 #6B75D6 #1aa97a
 * ===================================================================== */
:root{
  --orange:#F48D00; --orange-l:#FFB347; --ink:#1f2430; --grey:#6b7280;
  --line:#e6e8ee; --bg:#f6f7fb; --blue:#6B75D6; --green:#1aa97a; --red:#e5484d; --amber:#d9a300;
}
*{box-sizing:border-box;margin:0}
body{font-family:-apple-system,"Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
button{font-family:inherit}

/* ---------- 顶栏 ---------- */
header{position:sticky;top:0;z-index:40;background:#fff;border-bottom:1px solid var(--line)}
.nav{max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:18px;padding:10px 20px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:18px;white-space:nowrap}
.brand .mark{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,var(--orange-l),var(--orange));color:#fff;display:flex;align-items:center;justify-content:center;font-size:16px}
.search{flex:1;max-width:420px;display:flex;background:var(--bg);border:1px solid var(--line);border-radius:22px;padding:7px 14px;gap:8px}
.search input{border:0;background:transparent;flex:1;outline:none;font-size:14px}
.search span{cursor:pointer;color:var(--grey)}
.menu{display:flex;gap:4px}
.menu a{padding:7px 12px;border-radius:8px;font-size:14px;color:var(--grey)}
.menu a:hover,.menu a.on{color:var(--orange);background:rgba(244,141,0,.08)}
.nav-r{display:flex;align-items:center;gap:10px;white-space:nowrap}
.btn{border:0;background:var(--orange);color:#fff;padding:8px 16px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:600;transition:.15s}
.btn:hover{filter:brightness(1.05)}
.btn.ghost{background:#fff;color:var(--orange);border:1px solid var(--orange)}
.btn.lg{padding:12px 26px;font-size:15px}
.btn.sm{padding:5px 12px;font-size:12px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.wx{font-size:12px;color:var(--grey)}
@media(max-width:880px){.search{display:none}.menu{overflow-x:auto;flex-wrap:nowrap;-webkit-overflow-scrolling:touch}.menu a{white-space:nowrap}.nav{gap:10px}}

/* ---------- 通用容器 ---------- */
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
section{padding:46px 0}
.sec-h{display:flex;align-items:baseline;gap:12px;margin-bottom:20px}
.sec-h h2{font-size:24px}
.sec-h .en{color:var(--grey);font-size:13px;letter-spacing:1px}
.sec-h .more{margin-left:auto;color:var(--orange);font-size:13px}
.loading{color:var(--grey);font-size:14px;padding:30px 0;text-align:center}

/* ---------- Hero ---------- */
.hero{position:relative;color:#fff;overflow:hidden}
.slides{position:relative;height:380px}
.slide{position:absolute;inset:0;display:none;align-items:center;background-size:cover;background-position:center}
.slide.on{display:flex}
.slide::before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,rgba(244,141,0,.92),rgba(107,117,214,.78))}
.hero .inner{position:relative;max-width:1200px;margin:0 auto;padding:0 40px;width:100%}
.hero .tag{display:inline-block;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.4);padding:4px 12px;border-radius:20px;font-size:13px;margin-bottom:16px}
.hero h1{font-size:42px;line-height:1.2;margin-bottom:14px;font-weight:800}
.hero p{font-size:17px;opacity:.95;margin-bottom:24px;max-width:560px}
.hero .cta{display:flex;gap:14px}
.hero .cta .btn{background:#fff;color:var(--orange)}
.hero .cta .btn.ghost{background:transparent;color:#fff;border:1px solid #fff}
.dots{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:8px}
.dots i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer}
.dots i.on{background:#fff;width:24px;border-radius:6px}
@media(max-width:880px){.hero h1{font-size:30px}.hero .inner{padding:0 20px}}

/* ---------- 分类入口 ---------- */
.cats{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.cat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 12px;text-align:center;transition:.15s;cursor:pointer}
.cat:hover{box-shadow:0 4px 16px rgba(20,30,60,.08);transform:translateY(-3px)}
.cat .ic{width:46px;height:46px;border-radius:12px;background:rgba(244,141,0,.1);color:var(--orange);display:flex;align-items:center;justify-content:center;font-size:22px;margin:0 auto 10px}
.cat b{font-size:14px;display:block}
.cat small{color:var(--grey);font-size:12px}
@media(max-width:880px){.cats{grid-template-columns:repeat(3,1fr)}}

/* ---------- 直播专区 ---------- */
.live-tabs{display:flex;gap:8px;margin-bottom:16px}
.live-tabs button{border:1px solid var(--line);background:#fff;padding:7px 16px;border-radius:20px;cursor:pointer;font-size:14px;color:var(--grey)}
.live-tabs button.on{background:var(--orange);color:#fff;border-color:var(--orange)}
.live-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.lcard{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;cursor:pointer;transition:.15s}
.lcard:hover{box-shadow:0 6px 20px rgba(20,30,60,.1);transform:translateY(-3px)}
.lcard .cv{height:140px;background-size:cover;background-position:center;position:relative;display:flex;align-items:flex-start;justify-content:space-between;padding:10px}
.badge-live{background:var(--red);color:#fff;font-size:12px;padding:3px 9px;border-radius:6px;display:flex;align-items:center;gap:5px}
.badge-live i{width:7px;height:7px;border-radius:50%;background:#fff;animation:pl 1s infinite}
@keyframes pl{0%,100%{opacity:1}50%{opacity:.3}}
.badge-soon{background:rgba(0,0,0,.55);color:#fff;font-size:12px;padding:3px 9px;border-radius:6px}
.badge-replay{background:var(--grey);color:#fff;font-size:12px;padding:3px 9px;border-radius:6px}
.cd{background:rgba(0,0,0,.6);color:#fff;font-size:12px;padding:3px 8px;border-radius:6px;font-variant-numeric:tabular-nums}
.lcard .body{padding:12px 14px}
.lcard .body h4{font-size:15px;margin-bottom:6px}
.lcard .meta{font-size:12px;color:var(--grey);display:flex;justify-content:space-between}
@media(max-width:880px){.live-grid{grid-template-columns:1fr}}

/* ---------- 课程卡片 ---------- */
.filters{display:flex;gap:8px;margin-bottom:18px;flex-wrap:wrap}
.filters button{border:1px solid var(--line);background:#fff;padding:6px 14px;border-radius:20px;cursor:pointer;font-size:13px;color:var(--grey)}
.filters button.on{background:var(--ink);color:#fff;border-color:var(--ink)}
.course-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.ccard{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column}
.ccard .cv{height:130px;position:relative;background:linear-gradient(135deg,var(--orange),var(--blue));display:flex;align-items:center;justify-content:center;color:#fff;font-size:34px}
.ccard .cv .lv{position:absolute;top:10px;left:10px;background:rgba(0,0,0,.55);color:#fff;font-size:12px;padding:3px 9px;border-radius:6px}
.ccard .cv .trial{position:absolute;top:10px;right:10px;background:#fff;color:var(--orange);font-size:11px;padding:2px 8px;border-radius:6px;font-weight:700}
.ccard .body{padding:12px 14px;flex:1;display:flex;flex-direction:column}
.ccard .body h4{font-size:15px;margin-bottom:8px}
.ccard .body .m{font-size:12px;color:var(--grey);margin-bottom:10px}
.ccard .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between}
.price{color:var(--orange);font-weight:800;font-size:17px}
.price small{color:var(--grey);font-weight:400;font-size:11px}
@media(max-width:880px){.course-grid{grid-template-columns:repeat(2,1fr)}}

/* ---------- 考证区 ---------- */
.cert{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;display:grid;grid-template-columns:1.1fr 1fr}
.cert .left{padding:28px}
.lvl-table{width:100%;border-collapse:collapse;font-size:14px;margin-top:10px}
.lvl-table th,.lvl-table td{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left}
.lvl-table th{color:var(--grey);font-weight:600;font-size:13px}
.lvl-table .p{color:var(--orange);font-weight:800}
.cert .right{background:linear-gradient(160deg,#fff7ec,#eef0ff);padding:28px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.cert .right img{width:200px;border:1px solid var(--line);border-radius:8px;box-shadow:0 6px 18px rgba(20,30,60,.1);margin-bottom:12px}
.cert .right small{color:var(--grey)}
@media(max-width:880px){.cert{grid-template-columns:1fr}}

/* ---------- 学中做 ---------- */
.lab{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.labc{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}
.labc .ic{width:44px;height:44px;border-radius:11px;background:rgba(107,117,214,.12);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:10px}
.labc h4{font-size:15px;margin-bottom:6px}
.labc p{font-size:13px;color:var(--grey)}
@media(max-width:880px){.lab{grid-template-columns:repeat(2,1fr)}}

/* ---------- 口碑 ---------- */
.story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.story{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}
.story .top{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.story .av{width:46px;height:46px;border-radius:50%;background:var(--orange);color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px;overflow:hidden}
.story .av img{width:100%;height:100%;object-fit:cover}
.story b{font-size:14px;display:block}
.story small{color:var(--grey);font-size:12px}
.story p{font-size:13px;color:#444}
@media(max-width:880px){.story-grid{grid-template-columns:1fr}}

/* ---------- 资讯动态 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.ncard{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:transform .18s,box-shadow .18s}
.ncard:hover{transform:translateY(-3px);box-shadow:0 10px 26px rgba(20,30,60,.1)}
.ncard .cv{height:132px;background-size:cover;background-position:center;display:flex;align-items:center;justify-content:center}
.ncard .cv.ph span{color:#fff;font-size:40px;font-weight:700;opacity:.9}
.ncard .body{padding:14px 16px 16px;display:flex;flex-direction:column;flex:1}
.ncard h4{font-size:15px;line-height:1.45;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ncard p{font-size:13px;color:#5a6172;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ncard .meta{display:flex;align-items:center;gap:10px;margin-top:12px;font-size:12px;color:var(--grey)}
.ncard .meta .src{margin-left:auto;color:var(--blue);border:1px solid var(--blue);border-radius:999px;padding:1px 8px;font-size:11px}
@media(max-width:880px){.news-grid{grid-template-columns:1fr}}

/* ---------- 合作生态 ---------- */
.eco{background:linear-gradient(120deg,rgba(244,141,0,.06),rgba(107,117,214,.06));border:1px solid var(--line);border-radius:16px;padding:30px;display:flex;gap:30px;align-items:center;flex-wrap:wrap}
.eco .txt{flex:1;min-width:260px}
.eco .txt h3{font-size:20px;margin-bottom:8px}
.eco .txt p{color:var(--grey);font-size:14px}
.eco .tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.eco .tags span{background:#fff;border:1px solid var(--line);border-radius:8px;padding:6px 12px;font-size:13px}

/* =====================================================================
 * 学习中心（控制台页）通用样式
 * 适用：report / growth / teacher / tickets / cert-verify
 * ===================================================================== */
.subnav{background:#fff;border-bottom:1px solid var(--line)}
.subnav .wrap{display:flex;gap:4px;overflow-x:auto;padding:0 20px}
.subnav a{padding:13px 12px;font-size:14px;color:var(--grey);white-space:nowrap;border-bottom:2px solid transparent}
.subnav a:hover{color:var(--orange)}
.subnav a.on{color:var(--orange);border-bottom-color:var(--orange);font-weight:600}

.page-head{display:flex;align-items:flex-end;gap:14px;flex-wrap:wrap;margin-bottom:18px}
.page-head h2{font-size:24px}
.page-head .sub{color:var(--grey);font-size:13px}
.page-head .r{margin-left:auto;display:flex;gap:10px;align-items:center}

.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:18px}
.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}
.stat .n{font-size:28px;font-weight:800;color:var(--orange);font-variant-numeric:tabular-nums}
.stat .n small{font-size:13px;font-weight:600;margin-left:2px}
.stat .l{color:var(--grey);font-size:13px;margin-top:2px}
.stat.blue .n{color:var(--blue)}
.stat.green .n{color:var(--green)}
.stat.red .n{color:var(--red)}

/* 运营看板（接口 90）：核心指标 + 待办 + 异常 */
.dash-metrics{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.dash-todo-row{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.dash-todo{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;display:flex;flex-direction:column;gap:8px}
.dash-todo.hot{border-color:rgba(229,72,77,.35);background:rgba(229,72,77,.03)}
.dash-todo .t{display:flex;align-items:center;justify-content:space-between;gap:10px}
.dash-todo .tt{font-size:14px;color:var(--ink);font-weight:600}
.dash-todo .badge-num{font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--grey)}
.dash-todo.hot .badge-num{color:var(--red)}
.dash-todo .tdesc{font-size:12px;color:var(--grey);margin:0;flex:1}
.dash-alerts{display:flex;flex-direction:column;gap:14px}
.alert-row{display:flex;align-items:center;gap:14px;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.alert-main{flex:1}
.alert-main b{font-size:15px;display:block}
.alert-main small{font-size:12px;color:var(--grey)}
.alert-num{font-size:28px;font-weight:800;font-variant-numeric:tabular-nums}
.alert-num.err{color:var(--red)} .alert-num.green{color:var(--green)}
.fc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.fc{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 12px}
.fc.muted{color:var(--grey);justify-content:center}
.muted{color:var(--grey)}
@media(max-width:880px){
  .dash-metrics{grid-template-columns:repeat(2,1fr)}
  .dash-todo-row{grid-template-columns:1fr}
}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.grid-21{display:grid;grid-template-columns:1.3fr 1fr;gap:18px;align-items:start}
.mt{margin-top:18px}

.tbl{width:100%;border-collapse:collapse;font-size:13px}
.tbl th,.tbl td{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.tbl th{color:var(--grey);font-weight:600;font-size:12px;white-space:nowrap}
.tbl tbody tr:last-child td{border-bottom:0}
.tbl .num{font-variant-numeric:tabular-nums}

.empty{color:var(--grey);font-size:13px;padding:28px 0;text-align:center}
.pill{font-size:11px;padding:2px 8px;border-radius:6px;display:inline-block;white-space:nowrap}
.pill.ok{background:rgba(26,169,122,.12);color:var(--green)}
.pill.warn{background:rgba(217,163,0,.14);color:var(--amber)}
.pill.err{background:rgba(229,72,77,.12);color:var(--red)}
.pill.info{background:rgba(107,117,214,.12);color:var(--blue)}
.pill.grey{background:var(--bg);color:var(--grey)}

.form-row{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.field{flex:1;min-width:180px}
.field label{display:block;font-size:12px;color:var(--grey);margin-bottom:5px}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:9px 11px;font-size:14px;outline:none;font-family:inherit;background:#fff}
.field textarea{min-height:88px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--orange)}

.kp-row{display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px solid var(--line);font-size:13px}
.kp-row:last-child{border-bottom:0}
.kp-row .nm{width:130px;flex:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.kp-row .bar-mini{flex:1;height:7px;background:var(--bg);border-radius:4px;overflow:hidden}
.kp-row .bar-mini i{display:block;height:100%;border-radius:4px}
.kp-row .v{width:46px;text-align:right;font-variant-numeric:tabular-nums}

.rank-row{display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px solid var(--line);font-size:13px}
.rank-row:last-child{border-bottom:0}
.rank-row .no{width:26px;height:26px;border-radius:50%;background:var(--bg);color:var(--grey);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex:none}
.rank-row.t1 .no{background:var(--orange);color:#fff}
.rank-row.t2 .no{background:#b9bfca;color:#fff}
.rank-row.t3 .no{background:#d9a300;color:#fff}
.rank-row .nm{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank-row .v{font-variant-numeric:tabular-nums;color:var(--orange);font-weight:700}

.badge-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.badge-c{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 12px;text-align:center}
.badge-c .ic{width:52px;height:52px;border-radius:50%;margin:0 auto 10px;background:linear-gradient(135deg,var(--orange-l),var(--orange));color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px}
.badge-c b{font-size:14px;display:block}
.badge-c small{color:var(--grey);font-size:12px;display:block;margin-top:3px}

.ticket{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:12px}
.ticket .hd{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.ticket .hd b{font-size:14px}
.ticket .hd .id{font-size:12px;color:var(--grey);font-variant-numeric:tabular-nums}
.ticket .ct{font-size:13px;color:#444;white-space:pre-wrap}
.ticket .rp{font-size:13px;background:rgba(26,169,122,.08);border-radius:8px;padding:8px 10px;margin-top:8px;color:#16754f}
.ticket .ft{font-size:12px;color:var(--grey);margin-top:8px}
.ticket.picked{border-color:var(--orange);background:rgba(255,122,0,.04)}

/* 表格行选中（实名审核 / 招生批次清单复用） */
.tbl tbody tr.picked{background:rgba(255,122,0,.06)}
.tbl tbody tr.picked td{box-shadow:inset 3px 0 0 var(--orange)}
.tbl tbody tr[data-id]{cursor:pointer}

/* 招生批次卡（学员端 pay.html，接口 111） */
.batch-card{border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:12px;background:#fff}
.batch-card .bc-hd{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.batch-card .bc-hd b{font-size:15px}
.batch-card .bc-hd .sub{font-size:12px;color:var(--grey);margin-top:2px}
.batch-card .bc-hd-r{flex:0 0 auto}
.batch-card .bc-info{font-size:12px;color:var(--grey);margin:8px 0 10px;
  padding-bottom:8px;border-bottom:1px dashed var(--line);font-variant-numeric:tabular-nums}
.batch-card .bc-row{display:flex;align-items:center;gap:12px;padding:8px 0;font-size:13px}
.batch-card .bc-row + .bc-row{border-top:1px solid var(--line)}
.batch-card .bc-main{flex:1 1 auto;min-width:0}
.batch-card .bc-main .sub{font-size:12px;color:var(--grey)}
.batch-card .bc-meta{flex:0 0 auto;font-size:12px;color:var(--grey);font-variant-numeric:tabular-nums}
.batch-card .bc-act{flex:0 0 auto;display:flex;align-items:center;gap:8px}

/* 列表页「筛选 + 批量操作」通用工具条（作品 / 回放 / 出勤 / 实名审核复用） */
.toolbar{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end;
  padding-bottom:14px;margin-bottom:14px;border-bottom:1px solid var(--line)}
.toolbar .field{flex:0 1 auto;min-width:130px}
.toolbar .field.grow{flex:1 1 200px;min-width:160px}
.bulkbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:12px;font-size:13px;color:var(--grey)}
.bulkbar .count{color:var(--ink);font-weight:700}
.pick{width:16px;height:16px;flex:0 0 auto;cursor:pointer;accent-color:var(--orange)}

/* 菜单管理：可见角色复选组（页面内联复选，不套 .field input 的全宽样式） */
.nm-roles{display:flex;gap:14px;flex-wrap:wrap;border:1px solid var(--line);border-radius:8px;padding:9px 12px;background:#fff}
.nm-roles label{display:flex;align-items:center;gap:5px;font-size:13px;color:var(--ink);cursor:pointer;white-space:nowrap}
.nm-roles input{width:auto;accent-color:var(--orange);cursor:pointer}
/* 清单里被选中的行 */
.tbl tr.picked{background:rgba(244,141,0,.06)}
.tbl tr.picked td:first-child{box-shadow:inset 3px 0 0 var(--orange)}
/* 表单内的确认勾选（实名提交前的信息核对） */
label.ck{display:flex;align-items:center;gap:8px;font-size:13px;color:#444;line-height:1.6}
label.ck input{width:16px;height:16px;flex:0 0 auto;accent-color:var(--orange);cursor:pointer}

/* 打印「出勤证明」时只保留证明本体：隐去导航、筛选条、批量条、页脚与脚注 */
@media print{
  header,.subnav,.toolbar,.bulkbar,footer,.note,.toast{display:none !important}
  .page-head .sub{color:#666}
  .card{border:0;padding:0;margin-bottom:14px;break-inside:avoid}
  .stat-grid{break-inside:avoid}
  .tbl{font-size:12px}
}

.verify-box{max-width:640px;margin:0 auto}
.verify-res{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;margin-top:18px}
.verify-res .big{font-size:20px;font-weight:800;display:flex;align-items:center;gap:10px;margin-bottom:14px}
.verify-res .big.ok{color:var(--green)}
.verify-res .big.err{color:var(--red)}
.verify-res dl{display:grid;grid-template-columns:110px 1fr;gap:10px 14px;font-size:14px;margin:0}
.verify-res dt{color:var(--grey)}
.verify-res dd{margin:0}

.toast{position:fixed;left:50%;bottom:44px;transform:translateX(-50%) translateY(8px);background:rgba(31,36,48,.94);color:#fff;padding:10px 18px;border-radius:8px;font-size:14px;z-index:99;opacity:0;pointer-events:none;transition:.2s;max-width:80vw}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}

@media(max-width:880px){
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .grid-2,.grid-21{grid-template-columns:1fr}
  .badge-grid{grid-template-columns:repeat(2,1fr)}
  .kp-row .nm{width:96px}
}

/* ---------- 页脚 ---------- */
footer{background:#1f2430;color:#c9cdd6;padding:40px 0 24px;margin-top:20px}
.foot-grid{max-width:1200px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:1.8fr 1fr 1.4fr 1fr;gap:30px}
.foot-grid h4{color:#fff;font-size:15px;margin-bottom:12px}
.foot-grid a,.foot-grid p{color:#aeb3bd;font-size:13px;display:block;margin-bottom:8px}
.foot-grid .qr{background:#fff;padding:8px;border-radius:8px;display:inline-block}
.foot-grid .qr img{width:120px;display:block}
@media(max-width:880px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:24px}
  .foot-grid>div:first-child,.foot-grid>div:last-child{grid-column:1 / -1}
}
.copy{border-top:1px solid #333a47;margin-top:30px;padding-top:16px;text-align:center;font-size:12px;color:#8a909c}
.copy a{color:#aeb3bd}

/* =====================================================================
 * 直播间页面 (live.html) 专用样式
 * ===================================================================== */
.live-top{position:sticky;top:0;z-index:40;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:14px;padding:10px 20px;max-width:1400px;margin:0 auto}
.live-top .back{cursor:pointer;font-size:20px;color:var(--grey);border:0;background:none}
.live-top .ttl{font-weight:700;font-size:16px;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.live-top .share{color:var(--grey);font-size:13px;cursor:pointer;border:1px solid var(--line);background:#fff;border-radius:8px;padding:6px 12px}
.live-top-r{display:flex;align-items:center;gap:10px;flex-shrink:0}
.live-top-r .lnk{color:var(--grey);font-size:13px;padding:6px 10px;border-radius:8px;transition:.15s}
.live-top-r .lnk:hover{background:var(--bg);color:var(--orange)}
.live-wrap{max-width:1400px;margin:18px auto;padding:0 20px;display:grid;grid-template-columns:1fr 360px;gap:18px;align-items:start}

/* 左：播放器 */
.player{background:#0e1116;border-radius:14px;overflow:hidden;position:sticky;top:70px}
.stage{position:relative;aspect-ratio:16/9;background:#000;display:flex;align-items:center;justify-content:center;color:#444;overflow:hidden}
.stage video,.stage img{width:100%;height:100%;object-fit:cover}
.stage .ph{font-size:15px;color:#666;text-align:center;padding:20px}
/* 即将开始候播 */
.stage .soon-box{text-align:center;color:#fff}
.stage .soon-box .big{font-size:40px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--orange-l);margin:8px 0}
.stage .soon-box .sub{color:#cfd3da;font-size:14px}
/* 回放进度 */
.stage .replay-mask{position:absolute;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;cursor:pointer}
/* 控制条 */
.controls{display:flex;align-items:center;gap:14px;padding:10px 14px;background:#171b22;color:#cfd3da}
.controls .play{border:0;background:none;color:#fff;font-size:18px;cursor:pointer}
.controls .time{font-size:12px;font-variant-numeric:tabular-nums}
.controls .bar{flex:1;height:4px;background:#333; border-radius:2px;position:relative}
.controls .bar i{position:absolute;left:0;top:0;bottom:0;width:32%;background:var(--orange);border-radius:2px}
.controls .ctrl-r{display:flex;gap:12px;font-size:13px;color:#cfd3da}
.controls .ctrl-r span{cursor:pointer}
.live-info{padding:14px 16px;background:#171b22;border-top:1px solid #262b33;display:flex;align-items:center;gap:12px;color:#fff}
.live-info .lk{background:var(--red);font-size:11px;padding:2px 8px;border-radius:5px}
.live-info .lk.soon{background:var(--amber)}
.live-info .lk.replay{background:var(--grey)}
.live-info .who{display:flex;align-items:center;gap:8px}
.live-info .who img{width:34px;height:34px;border-radius:50%;object-fit:cover;background:#333}
.live-info .who b{font-size:14px}
.live-info .who small{display:block;color:#9aa0ab;font-size:12px}
.live-info .view{margin-left:auto;font-size:13px;color:#9aa0ab}
.live-actions{display:flex;gap:10px;padding:12px 16px;border-top:1px solid #262b33;background:#171b22}
.live-actions .act{flex:1;text-align:center;color:#cfd3da;font-size:13px;cursor:pointer;border:1px solid #2c313a;border-radius:8px;padding:8px;background:#1d222b}
.live-actions .act:hover{border-color:var(--orange);color:var(--orange)}
.live-actions .act.primary{background:var(--orange);color:#fff;border-color:var(--orange);font-weight:600}

/* 右：互动栏 */
.panel{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;height:calc(100vh - 110px);position:sticky;top:70px}
.panel .tabs{display:flex;border-bottom:1px solid var(--line)}
.panel .tabs button{flex:1;border:0;background:#fff;padding:12px 4px;font-size:13px;color:var(--grey);cursor:pointer;border-bottom:2px solid transparent}
.panel .tabs button.on{color:var(--orange);border-bottom-color:var(--orange);font-weight:600}
.panel .tab-body{flex:1;overflow-y:auto;padding:12px 14px}
.panel .tab-pane{display:none}
.panel .tab-pane.on{display:block}

/* 聊天 */
.msg{display:flex;gap:8px;margin-bottom:12px}
.msg .av{width:30px;height:30px;border-radius:50%;background:#eee;flex:none;font-size:12px;display:flex;align-items:center;justify-content:center;color:#888}
.msg .b{flex:1}
.msg .b .nm{font-size:12px;color:var(--grey)}
.msg .b .tx{font-size:13px;color:#333;background:#f3f4f7;border-radius:8px;padding:7px 10px;display:inline-block;margin-top:2px}
.msg.me .b .tx{background:rgba(244,141,0,.12);color:var(--orange)}
.chat-input{display:flex;gap:8px;padding:10px 12px;border-top:1px solid var(--line)}
.chat-input input{flex:1;border:1px solid var(--line);border-radius:8px;padding:8px 10px;font-size:13px;outline:none}
.chat-input button{border:0;background:var(--orange);color:#fff;border-radius:8px;padding:0 16px;cursor:pointer;font-size:13px}

/* 问答 */
.qa{display:flex;gap:8px;margin-bottom:12px;align-items:flex-start}
.qa .up{border:1px solid var(--line);border-radius:8px;padding:4px 8px;font-size:12px;color:var(--grey);cursor:pointer;text-align:center;background:#fff}
.qa .up.on{color:var(--orange);border-color:var(--orange)}
.qa .up b{display:block;font-size:13px}
.qa .c{flex:1}
.qa .c .q{font-size:13px;color:#222}
.qa .c .a{font-size:12px;color:var(--green);background:rgba(26,169,122,.08);border-radius:8px;padding:6px 9px;margin-top:5px}
.qa-form{display:flex;gap:8px;padding:10px 12px;border-top:1px solid var(--line)}
.qa-form input{flex:1;border:1px solid var(--line);border-radius:8px;padding:8px 10px;font-size:13px;outline:none}
.qa-form button{border:0;background:var(--blue);color:#fff;border-radius:8px;padding:0 14px;cursor:pointer;font-size:13px}

/* 课件资料 */
.mat{display:flex;align-items:center;gap:10px;padding:10px;border:1px solid var(--line);border-radius:10px;margin-bottom:10px}
.mat .fic{width:34px;height:34px;border-radius:8px;background:rgba(107,117,214,.12);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:16px;flex:none}
.mat .mi{flex:1}
.mat .mi b{font-size:13px;display:block}
.mat .mi small{color:var(--grey);font-size:11px}
.mat .dl{font-size:12px;color:var(--orange);cursor:pointer}

/* 签到 / 公告 */
.signin{text-align:center;padding:24px 10px}
.signin .ok{color:var(--green);font-size:14px;margin-top:10px}
.ann{background:rgba(244,141,0,.07);border:1px solid rgba(244,141,0,.2);border-radius:10px;padding:10px 12px;font-size:13px;color:#8a5a00;margin-bottom:10px}
.ann b{display:block;margin-bottom:3px;color:var(--orange)}

/* 防作弊告警条（Track 3 / 契约 §16.2） */
.ac-warn{display:none;background:#fff7e6;border:1px solid #ffd591;color:#ad6800;padding:8px 12px;border-radius:8px;margin-bottom:10px;font-size:13px}
.ac-warn.danger{background:#fff1f0;border-color:#ffa39e;color:#cf1322}

/* 移动端：右栏下沉 */
@media(max-width:920px){
  .live-wrap{grid-template-columns:1fr}
  .player,.panel{position:static}
  .panel{height:auto;min-height:60vh}
}