/* ============================================================
   学员端样式 —— PC 优先(顶部导航 + 宽内容区),手机自动折叠
   断点:>=860px 走 PC;<860px 走移动(底部导航 + 单列)
   通用页面结构:
   <topnav>            PC 顶栏
   <div class="page">  内容容器(居中限宽)
       <div class="page-head"> 标题行
       ...
   <tabbar>            手机底栏
   ============================================================ */
:root{
  --primary:#4f46e5; --primary-2:#6366f1;
  --grad:linear-gradient(135deg,#6366f1 0%,#8b5cf6 50%,#ec4899 100%);
  --grad-soft:linear-gradient(135deg,#eef2ff 0%,#fce7f3 100%);
  --text:#1f2937; --soft:#6b7280; --light:#9ca3af;
  --border:#e8eaf0; --bg:#f4f6fb; --card:#fff;
  --success:#16a34a; --warning:#f59e0b; --danger:#ef4444;
  --sm:0 1px 3px rgba(15,23,42,.06);
  --md:0 6px 18px rgba(15,23,42,.08);
  --lg:0 16px 40px rgba(15,23,42,.14);
  --r:16px; --navh:64px; --maxw:1180px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:14px;line-height:1.55;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;}

/* ===== 顶部导航(PC) ===== */
.topnav{position:sticky;top:0;z-index:200;background:#fff;border-bottom:1px solid #e2e8f0;box-shadow:0 1px 4px rgba(15,23,42,.04);}
.topnav-inner{max-width:var(--maxw);margin:0 auto;height:var(--navh);padding:0 24px;
  display:flex;align-items:center;gap:30px;}
.topnav-brand{display:flex;align-items:center;flex-shrink:0;}
.topnav-brand img{height:36px;display:block;}
.topnav-menu{display:flex;align-items:center;gap:4px;flex:1;}
.topnav-menu a{display:flex;align-items:center;gap:6px;padding:9px 18px;border-radius:6px;
  color:#374151;font-size:15px;font-weight:500;transition:.15s;}
.topnav-menu a:hover{color:#2563eb;background:#eff6ff;}
.topnav-menu a.active{color:#2563eb;font-weight:600;}
.topnav-user{display:flex;align-items:center;gap:16px;flex-shrink:0;}
.topnav-reg{display:inline-flex;align-items:center;gap:5px;padding:8px 16px;border-radius:999px;
  background:var(--grad);color:#fff;font-weight:500;font-size:14px;box-shadow:0 4px 12px rgba(99,102,241,.35);}
.topnav-reg:hover{opacity:.92;}
.topnav-welcome{font-size:14px;color:#2563eb;font-weight:500;}
.topnav-logout{font-size:13px;color:#6b7280;display:flex;align-items:center;gap:4px;transition:.15s;}
.topnav-logout:hover{color:#ef4444;}
.topnav-avatar{width:38px;height:38px;border-radius:50%;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:600;cursor:pointer;}

/* ===== 移动顶部条(手机显示) ===== */
.m-head{display:none;position:sticky;top:0;z-index:150;background:#fff;
  border-bottom:1px solid var(--border);height:50px;align-items:center;justify-content:center;padding:0 14px;}
.m-head .title{font-size:16px;font-weight:600;}
.m-head .left,.m-head .right{position:absolute;font-size:20px;color:var(--text);}
.m-head .left{left:14px;} .m-head .right{right:14px;}

/* ===== 内容容器 ===== */
.page{max-width:var(--maxw);margin:0 auto;padding:26px 24px 60px;min-height:calc(100vh - var(--navh));}
.page-narrow{max-width:640px;}
.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.page-head h1{font-size:22px;font-weight:700;margin:0;}
.page-head .sub{color:var(--soft);font-size:13px;margin-top:2px;}

/* ===== Hero(首页) ===== */
.hero{background:var(--grad);color:#fff;border-radius:20px;padding:30px 34px;position:relative;overflow:hidden;
  box-shadow:0 14px 34px rgba(124,58,237,.28);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:22px;}
.hero::after{content:'';position:absolute;right:-40px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.2),transparent 70%);}
.hero .h-left{position:relative;z-index:1;}
.hero .greeting{font-size:14px;opacity:.9;}
.hero .name{font-size:27px;font-weight:700;margin-top:4px;}
.hero .stats{display:flex;gap:40px;position:relative;z-index:1;}
.hero .stats .item{text-align:center;}
.hero .stats .num{font-size:30px;font-weight:700;}
.hero .stats .label{font-size:13px;opacity:.9;margin-top:2px;}

/* ===== 区块标题 ===== */
.block{margin-top:30px;}
.block-title{font-size:18px;font-weight:600;margin-bottom:16px;display:flex;align-items:center;justify-content:space-between;}
.block-title .more{font-size:13px;color:var(--soft);font-weight:400;}
.block-title .more:hover{color:var(--primary);}

/* ===== 网格 ===== */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px;}
.grid-2{display:grid;grid-template-columns:repeat(auto-fill,minmax(380px,1fr));gap:16px;}

/* ===== 项目卡片 ===== */
.pcard{background:var(--card);border-radius:var(--r);box-shadow:var(--sm);overflow:hidden;
  display:flex;flex-direction:column;transition:.18s;}
.pcard:hover{transform:translateY(-4px);box-shadow:var(--md);}
.pcard .cover{width:100%;aspect-ratio:16/9;object-fit:cover;background:linear-gradient(135deg,#c7d2fe,#fbcfe8);}
.pcard .body{padding:14px 16px;flex:1;}
.pcard .name{font-size:16px;font-weight:600;margin:0 0 6px;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;}
.pcard .meta{color:var(--soft);font-size:12px;}
.pcard .foot{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-top:1px solid var(--border);}
.price{color:var(--danger);font-weight:700;font-size:18px;}
.price small{font-size:12px;font-weight:500;}

/* ===== 行卡(报考/订单) ===== */
.rcard{background:var(--card);border-radius:var(--r);padding:18px 20px;box-shadow:var(--sm);transition:.15s;}
.rcard:hover{box-shadow:var(--md);}
.rcard .r-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px;}
.rcard .r-title{font-weight:600;font-size:16px;}
.rcard .r-meta{color:var(--soft);font-size:13px;margin-top:3px;}
.rcard .r-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;
  padding-top:14px;border-top:1px dashed var(--border);}

/* ===== 按钮 ===== */
.btn-pay{background:var(--grad);color:#fff;padding:8px 22px;border:none;border-radius:999px;
  font-size:14px;font-weight:500;cursor:pointer;transition:.15s;white-space:nowrap;}
.btn-pay:hover{opacity:.9;} .btn-pay[disabled]{background:#d1d5db;cursor:not-allowed;}
.btn-ghost{background:#fff;color:var(--primary);border:1px solid var(--primary);padding:7px 18px;
  border-radius:999px;font-size:13px;font-weight:500;cursor:pointer;}
.btn-ghost:hover{background:var(--grad-soft);}
.btn-block{width:100%;padding:13px;border-radius:12px;background:var(--grad);color:#fff;border:none;
  font-size:15px;font-weight:600;cursor:pointer;box-shadow:0 6px 18px rgba(99,102,241,.35);transition:.15s;}
.btn-block:hover{opacity:.92;} .btn-block:active{transform:translateY(1px);}
.btn-line{width:100%;padding:12px;border-radius:12px;background:#fff;color:var(--primary);
  border:1px solid var(--primary);font-size:14px;font-weight:500;cursor:pointer;}

/* ===== 标签 ===== */
.tag{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:500;}
.tag-success{background:#dcfce7;color:var(--success);}
.tag-warn{background:#fef3c7;color:var(--warning);}
.tag-danger{background:#fee2e2;color:var(--danger);}
.tag-info{background:#e0f2fe;color:#0284c7;}
.tag-gray{background:#f1f5f9;color:#64748b;}

/* ===== 表单 ===== */
.card{background:var(--card);border-radius:var(--r);padding:24px 26px;box-shadow:var(--sm);}
.fg{margin-bottom:16px;}
.fg label{display:block;font-size:13px;color:var(--soft);margin-bottom:6px;}
.fg .in,.fg select,.fg textarea{width:100%;padding:11px 13px;border:1px solid var(--border);border-radius:10px;
  font-size:14px;background:#fff;outline:none;transition:.15s;}
.fg .in:focus,.fg select:focus,.fg textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.15);}
.fg-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}

/* ===== 登录/注册 ===== */
.auth{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;
  background:var(--grad);position:relative;overflow:hidden;}
.auth::after{content:'';position:absolute;bottom:-120px;right:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.18),transparent 70%);}
.auth-card{position:relative;z-index:1;width:100%;max-width:440px;background:#fff;border-radius:20px;
  padding:36px 32px 28px;box-shadow:0 30px 70px rgba(0,0,0,.22);}
.auth-card.wide{max-width:560px;}
.auth-title{text-align:center;font-size:24px;font-weight:700;margin-bottom:4px;}
.auth-sub{text-align:center;color:var(--soft);margin-bottom:26px;font-size:13px;}
.auth-bottom{text-align:center;margin-top:18px;font-size:13px;color:var(--soft);}
.auth-bottom a{color:var(--primary);font-weight:500;}

/* 项目多选 */
.pick-list{display:grid;gap:10px;}
.pick{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1.5px solid var(--border);
  border-radius:12px;cursor:pointer;transition:.12s;}
.pick:hover{border-color:var(--primary-2);}
.pick.on{border-color:var(--primary);background:var(--grad-soft);}
.pick .info{flex:1;} .pick .info .name{font-weight:500;} .pick .info .meta{color:var(--soft);font-size:12px;}
.pick .price{font-size:16px;}

/* 支付通道 */
.channels{display:grid;gap:12px;margin:14px 0;}
.channel{display:flex;align-items:center;gap:12px;padding:15px 18px;border:1.5px solid var(--border);
  border-radius:12px;background:#fff;cursor:pointer;transition:.12s;}
.channel:hover{border-color:var(--primary-2);}
.channel.on{border-color:var(--primary);background:var(--grad-soft);}
.channel .ic{font-size:26px;} .channel .ic.alipay{color:#1677ff;} .channel .ic.wechat{color:#07c160;} .channel .ic.bank{color:#ea580c;}
.channel .lb{flex:1;font-weight:500;font-size:15px;}
.channel .ck{color:var(--primary);font-size:18px;}

/* 空状态 */
.empty{grid-column:1/-1;text-align:center;padding:70px 0;color:var(--light);}
.empty i{font-size:54px;opacity:.3;} .empty .t{margin-top:10px;font-size:14px;}

/* 弹层 */
.mask{position:fixed;inset:0;background:rgba(15,23,42,.5);z-index:300;display:none;align-items:center;justify-content:center;padding:20px;}
.mask.show{display:flex;}
.sheet{background:#fff;border-radius:18px;width:100%;max-width:460px;padding:24px;box-shadow:var(--lg);}
.sheet .s-title{font-weight:600;font-size:17px;margin-bottom:4px;}

/* 底部导航(默认隐藏,手机显示) */
.tabbar{display:none;}

/* 工具类 */
.muted{color:var(--soft)!important;} .danger{color:var(--danger)!important;} .success{color:var(--success)!important;}
.tc{text-align:center;} .tr{text-align:right;}
.mt8{margin-top:8px;}.mt12{margin-top:12px;}.mt16{margin-top:16px;}.mt20{margin-top:20px;}
.row-flex{display:flex;gap:12px;align-items:center;}

/* ============================================================
   手机端(<860px)
   ============================================================ */
@media (max-width:859px){
  .topnav{display:none;}
  .m-head{display:flex;}
  .page{padding:0 0 76px;min-height:auto;}
  .page>.page-head{padding:14px 16px 0;}
  .page-section{padding:16px;}

  .hero{border-radius:0;flex-direction:column;align-items:flex-start;gap:18px;padding:26px 20px;box-shadow:none;}
  .hero .name{font-size:23px;}
  .hero .stats{width:100%;justify-content:space-between;gap:0;}
  .hero .stats .num{font-size:22px;}

  .grid,.grid-2{grid-template-columns:1fr;gap:12px;}
  .block{margin-top:0;} .block:first-of-type{margin-top:0;}
  .card{border-radius:14px;padding:16px;}
  .fg-row{grid-template-columns:1fr;}

  .tabbar{display:grid;position:fixed;left:0;right:0;bottom:0;grid-template-columns:repeat(5,1fr);
    background:#fff;border-top:1px solid var(--border);padding:6px 0 calc(6px + env(safe-area-inset-bottom));z-index:200;
    box-shadow:0 -2px 10px rgba(15,23,42,.05);}
  .tabbar a{text-align:center;padding:4px 0;color:var(--soft);font-size:11px;}
  .tabbar a i{display:block;font-size:21px;margin-bottom:2px;}
  .tabbar a.active{color:var(--primary);}
}


/* ===== 页面 Banner 图 ===== */
.page-banner{margin:-26px -24px 24px;margin-top:10px;overflow:hidden;border-radius:0 0 20px 20px;}
.page-banner img{width:100%;height:160px;object-fit:cover;display:block;}

/* ===== 开票卡片样式 ===== */
.inv-card{background:var(--card);border-radius:var(--r);box-shadow:var(--sm);overflow:hidden;transition:.15s;}
.inv-card:hover{box-shadow:var(--md);}
.inv-head{background:#f8fafc;padding:14px 18px;border-bottom:1px solid var(--border);}
.inv-head .inv-meta{font-size:13px;color:var(--soft);}
.inv-body{padding:18px;display:flex;align-items:center;gap:12px;}
.inv-dot{width:10px;height:10px;border-radius:50%;background:#3b82f6;flex-shrink:0;}
.inv-name{flex:1;font-size:16px;font-weight:600;}
.inv-price{color:var(--danger);font-size:18px;font-weight:700;}
.inv-foot{padding:14px 18px;border-top:1px solid var(--border);display:flex;align-items:center;gap:12px;}
.inv-link{color:#3b82f6;font-size:13px;font-weight:500;cursor:pointer;}
.inv-link:hover{text-decoration:underline;}
.inv-btn{padding:7px 16px;border-radius:6px;font-size:13px;font-weight:500;display:inline-block;text-align:center;cursor:pointer;border:none;}
.inv-btn.primary{background:#2563eb;color:#fff;}
.inv-btn.primary:hover{background:#1d4ed8;}
.inv-btn.info{background:#3b82f6;color:#fff;}
.inv-btn.info:hover{background:#2563eb;}
.inv-btn.gray{background:#e2e8f0;color:#94a3b8;cursor:default;}

@media(max-width:859px){
  .page-banner{margin:0 0 16px;border-radius:0;}
  .page-banner img{height:120px;}
}


/* 已报考项目不可选样式 */
.pick.enrolled{opacity:.6;cursor:not-allowed;background:#f8fafc;border-color:#e2e8f0;}
.pick.enrolled:hover{border-color:#e2e8f0;}
.pick.enrolled .ic{color:#94a3b8;}


/* ===== 项目搜索 + 分页 ===== */
.proj-toolbar{display:flex;gap:8px;margin-bottom:14px;max-width:420px;}
.proj-search-input{flex:1;padding:8px 12px;border:1px solid var(--border);border-radius:8px;font-size:13px;outline:none;transition:.15s;}
.proj-search-input:focus{border-color:var(--primary);box-shadow:0 0 0 2px rgba(79,70,229,.12);}
.proj-search-btn{display:inline-flex;align-items:center;gap:5px;padding:8px 16px;border:none;border-radius:8px;background:var(--grad);color:#fff;font-size:13px;font-weight:500;cursor:pointer;transition:.15s;}
.proj-search-btn:hover{opacity:.92;}

.proj-pager{display:flex;justify-content:center;align-items:center;gap:6px;margin-top:20px;flex-wrap:wrap;}
.pg-btn{min-width:32px;height:32px;padding:0 10px;border:1px solid var(--border);background:#fff;color:var(--text);border-radius:6px;font-size:13px;cursor:pointer;transition:.15s;display:inline-flex;align-items:center;justify-content:center;}
.pg-btn:hover:not(:disabled):not(.active){border-color:var(--primary);color:var(--primary);}
.pg-btn.active{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600;}
.pg-btn:disabled{opacity:.4;cursor:not-allowed;}
.pg-dot{padding:0 4px;color:var(--soft);font-size:13px;}


/* ===== 开票申请成功页 ===== */
.apply-done{max-width:520px;margin:0 auto;background:#fff;border-radius:22px;box-shadow:var(--lg);overflow:hidden;}
.apply-hero{padding:42px 28px 30px;text-align:center;color:#fff;position:relative;overflow:hidden;
  background:linear-gradient(135deg,#6366f1 0%,#8b5cf6 55%,#a855f7 100%);}
.apply-hero::after{content:'';position:absolute;right:-50px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.22),transparent 70%);}
.apply-icon{width:84px;height:84px;border-radius:50%;background:rgba(255,255,255,.22);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:14px;
  animation:pop .45s cubic-bezier(.3,1.4,.5,1) both;}
.apply-icon i{font-size:48px;color:#fff;}
@keyframes pop{0%{transform:scale(0);opacity:0;}100%{transform:scale(1);opacity:1;}}
.apply-title{font-size:22px;font-weight:700;letter-spacing:.5px;}
.apply-sub{font-size:13px;opacity:.92;margin-top:6px;}
.apply-body{padding:24px 28px 28px;}
.apply-tip{display:flex;align-items:flex-start;gap:10px;background:var(--grad-soft);border-radius:12px;
  padding:14px 16px;font-size:13px;line-height:1.7;color:var(--text);}
.apply-tip i{color:var(--primary);font-size:20px;flex-shrink:0;margin-top:1px;}
.apply-actions{display:flex;gap:12px;margin-top:22px;}
.apply-actions a{flex:1;}
@media(max-width:859px){.apply-done{border-radius:16px;}}