/* ===== 点燃教育 · 手机网页版 主题（橙红火焰） ===== */
:root{
  --flame-1:#FF8A3D; --flame-2:#FF3D00; --flame-deep:#E23000;
  --ink:#241509; --sub:#6B5545; --mut:#A8917F;
  --bg:#F6F1EC; --card:#FFFFFF; --line:#F0E6DD;
  --ok:#22B573; --warn:#FF5A1F;
  --shadow:0 6px 20px rgba(226,48,0,.08);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue",Helvetica,"Microsoft YaHei",sans-serif;
  background:#E9E2DA;color:var(--ink);font-size:15px;line-height:1.5;
}
/* 手机壳：居中，最大 480px，模拟 App */
#phone{
  max-width:480px;margin:0 auto;min-height:100vh;background:var(--bg);
  position:relative;display:flex;flex-direction:column;box-shadow:0 0 40px rgba(0,0,0,.12);
}
#app{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding-bottom:64px}
.page{padding:12px}
.pad{padding:12px}
.mt12{margin-top:12px}

/* 顶部头图 / 状态区 */
.hero{
  background:linear-gradient(135deg,var(--flame-1),var(--flame-2));
  color:#fff;padding:16px 16px 20px;position:relative;overflow:hidden;
}
.hero::after{content:"";position:absolute;right:-40px;top:-40px;width:160px;height:160px;
  background:radial-gradient(circle,rgba(255,255,255,.25),transparent 70%);border-radius:50%}
.hero .brand{font-size:20px;font-weight:800;letter-spacing:1px}
.hero .slogan{font-size:12px;opacity:.92;margin-top:4px}
.hero .stat{margin-top:12px;font-size:12px;opacity:.9}
.hero .search{
  margin-top:12px;background:rgba(255,255,255,.95);border-radius:20px;height:38px;
  display:flex;align-items:center;padding:0 14px;color:var(--mut);font-size:13px;gap:6px
}
.hero .search input{border:0;outline:0;flex:1;background:transparent;color:var(--ink);font-size:13px}

/* 金刚区 */
.cates{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:-14px 12px 0;position:relative;z-index:2}
.cate{background:var(--card);border-radius:14px;padding:10px 4px;text-align:center;box-shadow:var(--shadow)}
.cate .ic{width:42px;height:42px;border-radius:12px;margin:0 auto 6px;display:flex;align-items:center;justify-content:center;font-size:22px;color:#fff}
.cate .nm{font-size:12px;color:var(--sub)}

/* 区块标题 */
.sec-h{display:flex;align-items:center;justify-content:space-between;margin:18px 4px 10px}
.sec-h .t{font-size:16px;font-weight:800}
.sec-h .more{font-size:12px;color:var(--mut)}

/* 卡片 */
.card{background:var(--card);border-radius:16px;box-shadow:var(--shadow);padding:14px;margin-bottom:12px}
.course{display:flex;gap:12px;align-items:center}
.course .cv{width:84px;height:84px;border-radius:12px;flex:0 0 auto;display:flex;flex-direction:column;
  align-items:center;justify-content:center;color:#fff;font-weight:800;text-align:center;padding:6px}
.course .cv .em{font-size:26px}
.course .cv .ca{font-size:12px;margin-top:2px}
.course .info{flex:1;min-width:0}
.course .tt{font-weight:700;font-size:15px;line-height:1.35}
.course .meta{font-size:12px;color:var(--mut);margin-top:4px}
.course .pr{margin-top:8px;display:flex;align-items:baseline;gap:8px}
.course .pr .now{color:var(--warn);font-weight:800;font-size:18px}
.course .pr .old{color:var(--mut);text-decoration:line-through;font-size:12px}
.course .pr .tag{margin-left:auto;background:#FFF0E6;color:var(--flame-deep);font-size:11px;padding:3px 8px;border-radius:10px}

/* 团卡片 */
.tuan{position:relative;overflow:hidden}
.tuan .hd{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.tuan .lead{display:flex;align-items:center;gap:8px}
.avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,#FFB37A,#FF6A3D);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:0 0 auto}
.tuan .lead .nm{font-weight:700;font-size:14px}
.tuan .lead .sub{font-size:11px;color:var(--mut)}
.tuan .tt{font-weight:700;font-size:15px;margin:2px 0 6px}
.tuan .row{display:flex;justify-content:space-between;font-size:12px;color:var(--sub);margin-top:4px}
.price-line{display:flex;align-items:baseline;gap:8px;margin-top:8px}
.price-line .now{color:var(--warn);font-weight:800;font-size:20px}
.price-line .save{background:#FFEEDD;color:var(--flame-deep);font-size:11px;padding:2px 8px;border-radius:10px}
.countdown{font-size:12px;color:var(--flame-deep);font-weight:700}
.progress{height:8px;background:#F2E6DC;border-radius:6px;margin-top:10px;overflow:hidden}
.progress>i{display:block;height:100%;background:linear-gradient(90deg,var(--flame-1),var(--flame-2));border-radius:6px}
.prog-txt{display:flex;justify-content:space-between;font-size:11px;color:var(--mut);margin-top:6px}
.tuan .join{position:absolute;right:14px;bottom:14px;background:linear-gradient(135deg,var(--flame-1),var(--flame-2));
  color:#fff;border:0;border-radius:18px;padding:8px 16px;font-size:13px;font-weight:700}

/* 按钮 */
.btn{display:block;width:100%;border:0;border-radius:14px;padding:14px;font-size:16px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,var(--flame-1),var(--flame-2));box-shadow:var(--shadow);cursor:pointer}
.btn.ghost{background:#fff;color:var(--flame-deep);border:1.5px solid #FFD9C2}
.btn[disabled]{opacity:.5}
.fab{position:fixed;right:16px;bottom:78px;z-index:30;width:54px;height:54px;border-radius:50%;
  background:linear-gradient(135deg,var(--flame-1),var(--flame-2));color:#fff;border:0;font-size:24px;
  box-shadow:0 8px 22px rgba(226,48,0,.35)}
@media(min-width:481px){.fab{right:calc(50% - 240px + 16px)}}

/* 底栏 */
.tabbar{position:fixed;left:50%;transform:translateX(-50%);bottom:0;width:100%;max-width:480px;
  background:#fff;border-top:1px solid var(--line);display:flex;z-index:40;
  padding-bottom:env(safe-area-inset-bottom)}
.tabbar a{flex:1;text-align:center;padding:8px 0 6px;color:var(--mut);text-decoration:none;font-size:11px}
.tabbar a .ic{font-size:20px;display:block;line-height:1.1}
.tabbar a.on{color:var(--flame-deep);font-weight:700}

/* 顶栏（子页返回） */
.navbar{height:48px;display:flex;align-items:center;padding:0 12px;background:linear-gradient(135deg,var(--flame-1),var(--flame-2));color:#fff;position:sticky;top:0;z-index:20}
.navbar .back{font-size:22px;width:32px}
.navbar .title{font-weight:700;font-size:16px;flex:1;text-align:center;margin-right:32px}

/* 详情页 */
.detail-hero{background:linear-gradient(135deg,var(--flame-1),var(--flame-2));color:#fff;padding:18px 16px}
.detail-hero .tt{font-size:20px;font-weight:800}
.detail-hero .meta{font-size:13px;opacity:.92;margin-top:6px}
.detail-hero .price{margin-top:12px}
.detail-hero .price .now{font-size:26px;font-weight:800}
.detail-hero .price .old{margin-left:8px;text-decoration:line-through;opacity:.8;font-size:14px}
.kv{display:flex;justify-content:space-between;padding:11px 0;border-bottom:1px solid var(--line);font-size:14px}
.kv .k{color:var(--sub)}
.kv .v{font-weight:600;text-align:right}
.outline li{margin:6px 0;color:var(--sub);font-size:14px;list-style:none;padding-left:18px;position:relative}
.outline li::before{content:"•";color:var(--flame-1);position:absolute;left:0;font-weight:800}
.teacher-card{display:flex;gap:12px;align-items:center;cursor:pointer}
.teacher-card .avatar{width:52px;height:52px;font-size:20px}
.teacher-card .nm{font-weight:700;font-size:15px}
.teacher-card .ti{font-size:12px;color:var(--mut)}
.certs{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.certs span{background:#FFF0E6;color:var(--flame-deep);font-size:11px;padding:3px 9px;border-radius:10px}
.stat-row{display:flex;justify-content:space-around;text-align:center;margin-top:8px}
.stat-row .n{font-weight:800;font-size:18px;color:var(--flame-deep)}
.stat-row .l{font-size:11px;color:var(--mut)}

/* 团详情成员 */
.members{display:flex;flex-wrap:wrap;gap:14px;margin-top:8px}
.member{text-align:center;width:48px}
.member .avatar{width:40px;height:40px;font-size:16px;margin:0 auto}
.member .nm{font-size:10px;color:var(--sub);margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.member.lead .nm{color:var(--flame-deep);font-weight:700}

/* 表单 */
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--sub);margin-bottom:6px}
.field input,.field textarea{width:100%;border:1.5px solid var(--line);border-radius:12px;padding:11px 12px;font-size:15px;outline:0;background:#fff}
.field input:focus,.field textarea:focus{border-color:var(--flame-1)}
.tiers{display:flex;gap:10px}
.tier{flex:1;border:1.5px solid var(--line);border-radius:14px;padding:12px;text-align:center;cursor:pointer}
.tier.on{border-color:var(--flame-2);background:#FFF6F0}
.tier .num{font-weight:800;font-size:16px}
.tier .p{color:var(--warn);font-weight:700;margin-top:4px}
.tier .s{font-size:11px;color:var(--mut)}

/* 我的 */
.profile{display:flex;align-items:center;gap:14px;background:linear-gradient(135deg,var(--flame-1),var(--flame-2));color:#fff;padding:16px;border-radius:16px}
.profile .avatar{width:56px;height:56px;font-size:22px}
.profile .nm{font-weight:800;font-size:18px}
.profile .id{font-size:11px;opacity:.85;margin-top:2px}
.grid2{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:12px}
.grid2 .cell{background:#fff;border-radius:14px;padding:14px;text-align:center;box-shadow:var(--shadow)}
.grid2 .cell .n{font-weight:800;font-size:20px;color:var(--flame-deep)}
.grid2 .cell .l{font-size:11px;color:var(--mut);margin-top:2px}
.entry{display:flex;align-items:center;justify-content:space-between;padding:14px;background:#fff;border-radius:14px;margin-bottom:10px;box-shadow:var(--shadow);cursor:pointer}
.entry .s13{font-size:14px;font-weight:600}
.entry .c3{color:var(--mut)}

/* 协议 */
.tabs{display:flex;background:#fff;border-radius:14px;overflow:hidden;margin-bottom:12px}
.tabs .tab{flex:1;text-align:center;padding:12px;font-size:14px;color:var(--sub);cursor:pointer}
.tabs .tab.on{color:var(--flame-deep);font-weight:800;background:#FFF6F0}
.doc .h{font-size:17px;font-weight:800;margin:6px 0 4px}
.doc .h2{font-size:15px;font-weight:800;margin:16px 0 6px;color:var(--flame-deep)}
.doc .p{font-size:13.5px;color:var(--sub);margin:6px 0;line-height:1.7}
.doc .b{color:var(--flame-deep);font-weight:700}

/* 弹层 */
.mask{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:60;display:flex;align-items:flex-end;justify-content:center}
.sheet{background:#fff;width:100%;max-width:480px;border-radius:18px 18px 0 0;padding:18px 16px;padding-bottom:calc(18px + env(safe-area-inset-bottom))}
.sheet .sh-t{font-weight:800;font-size:16px;margin-bottom:12px;text-align:center}
.sheet .opt{display:flex;align-items:center;gap:12px;padding:14px;border-radius:12px;background:#F8F3EE;margin-bottom:10px;cursor:pointer;font-size:15px}
.sheet .opt .ic{font-size:22px}
.sheet .cancel{text-align:center;color:var(--mut);padding:12px;margin-top:4px}

/* 隐私弹窗 */
.privacy-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:80;display:flex;align-items:center;justify-content:center;padding:24px}
.privacy-box{background:#fff;border-radius:18px;padding:22px 20px;max-width:360px;width:100%}
.privacy-box .pt{font-weight:800;font-size:18px;color:var(--flame-deep)}
.privacy-box .pp{font-size:13px;color:var(--sub);line-height:1.7;margin:12px 0}
.privacy-box .pb{display:flex;gap:10px;margin-top:6px}
.privacy-box .pb button{flex:1;border:0;border-radius:12px;padding:12px;font-size:15px;font-weight:700;cursor:pointer}
.privacy-box .pb .ok{background:linear-gradient(135deg,var(--flame-1),var(--flame-2));color:#fff}
.privacy-box .pb .no{background:#F0E6DD;color:var(--sub)}

/* 海报 */
.poster-modal{position:fixed;inset:0;background:rgba(0,0,0,.85);z-index:90;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:16px}
.poster-modal .ph{color:#fff;font-size:14px;margin-bottom:10px}
.poster-modal img{max-width:88vw;max-height:70vh;border-radius:12px;box-shadow:0 10px 40px rgba(0,0,0,.5)}
.poster-modal .ptip{color:#fff;font-size:12px;margin-top:12px;text-align:center;opacity:.9}
.poster-modal .pclose{position:absolute;top:16px;right:18px;color:#fff;font-size:28px}
.poster-wrap{position:absolute;left:-9999px;top:0}
.poster{width:320px;background:#fff;border-radius:14px;overflow:hidden}
.poster .ph-top{background:linear-gradient(135deg,var(--flame-1),var(--flame-2));color:#fff;text-align:center;padding:18px 12px}
.poster .ph-top .t1{font-size:18px;font-weight:800}
.poster .ph-top .t2{font-size:14px;margin-top:6px}
.poster .ph-top .t3{font-size:12px;margin-top:4px;opacity:.92}
.poster .ph-mid{padding:16px}
.poster .ph-mid .who{font-size:15px;font-weight:700}
.poster .ph-mid .kv2{font-size:12px;color:var(--sub);margin-top:6px}
.poster .ph-mid .bar{height:8px;background:#F2E6DC;border-radius:6px;margin:12px 0 6px;overflow:hidden}
.poster .ph-mid .bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--flame-1),var(--flame-2))}
.poster .ph-mid .bt{font-size:12px;color:var(--mut)}
.poster .ph-bot{display:flex;align-items:center;gap:12px;padding:14px 16px;border-top:1px dashed #eee}
.poster .ph-bot .qr{width:84px;height:84px;background:#fff;border:1px solid #eee}
.poster .ph-bot .qt{font-size:13px;color:var(--ink)}
.poster .ph-bot .qs{font-size:11px;color:var(--mut);margin-top:4px}

/* toast */
.toast{position:fixed;left:50%;top:40%;transform:translateX(-50%);background:rgba(0,0,0,.8);color:#fff;padding:12px 18px;border-radius:10px;font-size:14px;z-index:99;max-width:80%}

/* 积分商城 */
.mall-head{display:flex;align-items:center;justify-content:space-between;background:linear-gradient(135deg,var(--flame-1),var(--flame-2));color:#fff;padding:16px;border-radius:16px;margin-bottom:12px}
.mall-head .nm{font-weight:800;font-size:16px}
.mall-head .pt{font-size:12px;opacity:.92;margin-top:2px}
.mall-head .pt b{font-size:18px}
.mall-exit{background:rgba(255,255,255,.22);color:#fff;border:0;border-radius:12px;padding:6px 12px;font-size:12px;cursor:pointer}
.mall-p{position:relative}
.mall-p .mp-cat{display:inline-block;background:#FFF0E6;color:var(--flame-deep);font-size:11px;padding:2px 9px;border-radius:10px;margin-bottom:6px}
.mall-p .mp-name{font-weight:700;font-size:15px;line-height:1.35}
.mall-p .mp-desc{font-size:12px;color:var(--mut);margin-top:4px;line-height:1.5}
.mall-p .mp-foot{display:flex;align-items:center;justify-content:space-between;margin-top:10px}
.mall-p .mp-cost{color:var(--warn);font-weight:800;font-size:16px}
.mall-p .mp-cost b{font-size:20px}
.mall-p .mp-sold{font-size:12px;color:var(--mut)}
.mall-p .mp-btn{width:auto;padding:8px 18px;font-size:13px;margin:0}
.loading{text-align:center;color:var(--mut);padding:40px;font-size:14px}
.badge{position:absolute;top:10px;left:10px;background:rgba(0,0,0,.35);color:#fff;font-size:11px;padding:2px 8px;border-radius:10px}
.empty{text-align:center;color:var(--mut);padding:40px 20px;font-size:14px}

/* 积分商城 · 商品详情页 */
.mall-p{cursor:pointer}
.mall-p:active{transform:scale(.99)}
.mall-detail{padding-bottom:96px}
.mall-detail .md-banner{height:140px;border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;position:relative;overflow:hidden;margin-bottom:12px}
.mall-detail .md-ico{font-size:46px;line-height:1}
.mall-detail .md-cat{margin-top:8px;font-size:12px;background:rgba(255,255,255,.22);padding:3px 12px;border-radius:12px}
.mall-detail .md-name{font-weight:800;font-size:18px;line-height:1.35}
.mall-detail .md-cost{font-size:13px;color:var(--mut);margin-top:8px}
.mall-detail .md-cost b{color:var(--warn);font-size:18px}
.mall-detail .mp-detail{font-size:14px;color:var(--ink);line-height:1.8}
.mall-detail .mp-ul{margin:0;padding-left:18px}
.mall-detail .mp-ul li{font-size:14px;color:var(--ink);line-height:1.9}
.mall-d-bar{position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid #eee;padding:12px 16px calc(12px + env(safe-area-inset-bottom));z-index:30;box-shadow:0 -4px 16px rgba(0,0,0,.06)}
.mall-d-bar .btn.block{width:100%;display:block}