* { margin:0; padding:0; box-sizing:border-box; -webkit-tap-highlight-color:transparent }
:root{
  --primary:#2563eb; --primary2:#1e3a8a; --secondary:#06b6d4; --accent:#f59e0b;
  --bg:#eef2f9; --card:#fff; --text:#1f2937; --muted:#94a3b8; --line:#eef1f6;
  --shadow:0 6px 18px rgba(30,58,138,.08);
}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.5}
.wrap{max-width:430px;margin:0 auto;min-height:100vh;background:var(--bg);padding-bottom:74px}
.header{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;padding:18px 16px 22px}
.header .top{display:flex;align-items:center;gap:10px}
.header .role{font-size:11px;background:rgba(255,255,255,.22);padding:2px 10px;border-radius:10px}
.header h1{font-size:18px;font-weight:600;margin-top:10px}
.header .sub{font-size:12px;opacity:.88;margin-top:3px}
.search-bar{display:flex;align-items:center;gap:10px;background:#fff;margin:0 16px;margin-top:-12px;border-radius:14px;padding:10px 14px;box-shadow:var(--shadow);position:relative;z-index:5}
.search-bar input{flex:1;border:none;outline:none;font-size:13px;background:transparent}
.search-bar .mic{font-size:18px;color:var(--muted)}
.section-title{display:flex;justify-content:space-between;align-items:center;padding:18px 16px 8px;font-size:15px;font-weight:600}
.section-title .more{font-size:12px;color:var(--muted);font-weight:400}
.card{background:var(--card);border-radius:16px;box-shadow:var(--shadow);margin:0 16px}
.list{background:var(--card);border-radius:16px;box-shadow:var(--shadow);margin:0 16px;overflow:hidden}
.row{display:flex;align-items:center;padding:13px 16px;border-bottom:1px solid var(--line);gap:12px}
.row:last-child{border-bottom:none}
.avatar{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;flex:none}
.info{flex:1;min-width:0}
.info .t{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.info .s{font-size:12px;color:var(--muted);margin-top:3px}
.tag{font-size:11px;padding:3px 9px;border-radius:10px;flex:none}
.tag.ok{background:#dcfce7;color:#16a34a}
.tag.no{background:#fee2e2;color:#dc2626}
.tag.wait{background:#fef3c7;color:#d97706}
.tag.blue{background:#dbeafe;color:var(--primary)}
.tag.teal{background:#cffafe;color:#0891b2}
.tag.gray{background:#f1f5f9;color:var(--muted)}
.tag.green{background:#d1fae5;color:#059669}
.tag.violet{background:#ede9fe;color:#7c3aed}
.btn{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;border:none;border-radius:20px;padding:8px 16px;font-size:13px;font-weight:500;cursor:pointer}
.btn.line{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.btn.ghost{background:#f1f5f9;color:var(--muted)}
.btn.full{width:calc(100% - 32px);padding:13px;font-size:15px;font-weight:600;border-radius:24px;margin:14px 16px;display:block;text-align:center;text-decoration:none}
.kpi{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:0 16px}
.kpi .box{background:var(--card);border-radius:16px;box-shadow:var(--shadow);padding:14px}
.kpi .num{font-size:24px;font-weight:800;color:var(--primary)}
.kpi .lab{font-size:12px;color:var(--muted);margin-top:4px}
.seg{display:flex;gap:8px;padding:6px 16px;flex-wrap:wrap}
.seg .sg{flex:1;text-align:center;font-size:13px;padding:8px 0;background:var(--card);border-radius:12px;color:var(--muted);box-shadow:var(--shadow);white-space:nowrap}
.seg .sg.on{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;font-weight:600}
.chip{display:inline-block;background:#eef2ff;color:var(--primary);font-size:12px;padding:6px 12px;border-radius:14px;margin:4px 6px 0 0}
.filters{display:flex;gap:8px;padding:8px 16px;overflow-x:auto}
.filters .f{flex:none;font-size:12px;padding:6px 14px;background:var(--card);border-radius:14px;color:var(--muted);box-shadow:var(--shadow)}
.filters .f.on{background:var(--primary);color:#fff}
.form{background:var(--card);margin:0 16px;border-radius:16px;box-shadow:var(--shadow);padding:6px 16px}
.field{display:flex;align-items:center;padding:13px 0;border-bottom:1px solid var(--line);gap:12px}
.field:last-child{border-bottom:none}
.field label{font-size:13px;color:var(--muted);width:84px;flex:none}
.field input,.field select,.field textarea{flex:1;border:none;outline:none;font-size:14px;background:transparent;text-align:right;font-family:inherit;resize:none}
.stat-line{display:flex;justify-content:space-between;padding:12px 16px;font-size:13px;border-top:1px solid var(--line)}
.stat-line b{color:var(--primary)}
.bottom-nav{position:fixed;bottom:0;left:50%;transform:translateX(-50%);max-width:430px;width:100%;background:rgba(255,255,255,.98);border-top:1px solid var(--line);display:flex;justify-content:space-around;padding:8px 0 10px;z-index:40;backdrop-filter:blur(8px)}
.nav-item{flex:1;text-align:center;color:var(--muted);font-size:10px;text-decoration:none}
.nav-item.active{color:var(--primary)}
.nav-item .icon{font-size:22px;display:block;margin-bottom:2px}
.safe-bottom{height:20px}
hr.sep{border:none;border-top:1px solid var(--line);margin:12px 16px}
/* 课程卡片 */
.course-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding:12px 16px}
.course{background:var(--card);border-radius:16px;box-shadow:var(--shadow);overflow:hidden;text-decoration:none;color:inherit}
.course .cover{height:88px;display:flex;align-items:center;justify-content:center;font-size:34px;color:#fff}
.course .cb{padding:10px 12px}
.course .ct{font-size:13px;font-weight:600;line-height:1.4;height:36px;overflow:hidden}
.course .cm{font-size:11px;color:var(--muted);margin-top:4px}
.course .cp{display:flex;align-items:center;justify-content:space-between;margin-top:8px}
.price{color:#e11d48;font-weight:800;font-size:15px}
.price small{font-size:11px}
.price-old{color:var(--muted);font-size:11px;text-decoration:line-through;margin-left:4px}
.hcourse{display:flex;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--card)}
.hcourse:last-child{border-bottom:none}
.hcourse .hc{width:96px;height:64px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:30px;color:#fff;flex:none}
.hcourse .hi{flex:1;min-width:0}
.hcourse .hi .t{font-size:14px;font-weight:600}
.hcourse .hi .m{font-size:11px;color:var(--muted);margin-top:4px}
.hcourse .hi .b{display:flex;align-items:center;justify-content:space-between;margin-top:6px}
/* 视频播放器 */
.player{position:relative;background:#0f172a;aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;color:#fff;overflow:hidden}
.player .play{width:56px;height:56px;border-radius:50%;background:rgba(255,255,255,.9);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:24px;z-index:2}
.player .plabel{position:absolute;top:12px;left:14px;font-size:12px;opacity:.85;z-index:2}
.player .ctrl{position:absolute;left:0;right:0;bottom:0;padding:8px 12px;display:flex;align-items:center;gap:8px;font-size:11px;background:linear-gradient(180deg,transparent,rgba(0,0,0,.55))}
.player .ctrl .track{flex:1;height:4px;background:rgba(255,255,255,.3);border-radius:2px;overflow:hidden}
.player .ctrl .track i{display:block;height:100%;width:38%;background:var(--secondary)}
.vmeta{padding:14px 16px 6px}
.vmeta .vt{font-size:16px;font-weight:700}
.vmeta .vm{font-size:12px;color:var(--muted);margin-top:6px;display:flex;gap:14px}
/* 章节手风琴 */
.chap{background:var(--card);margin:0 16px;border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
.chap .sec{border-bottom:1px solid var(--line)}
.chap .sec:last-child{border-bottom:none}
.chap .sh{display:flex;align-items:center;gap:10px;padding:13px 16px;font-size:14px;font-weight:600;cursor:pointer}
.chap .sh .cnt{font-size:11px;color:var(--muted);font-weight:400;margin-left:auto}
.chap .les{display:flex;align-items:center;gap:10px;padding:11px 16px 11px 42px;font-size:13px;border-top:1px solid var(--line);color:#334155}
.chap .les .d{font-size:11px;color:var(--muted);margin-left:auto}
.chap .les .lk{color:var(--secondary);font-size:16px}
/* 笔记 */
.note{background:var(--card);margin:0 16px 12px;border-radius:16px;box-shadow:var(--shadow);padding:14px 16px}
.note .nh{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted)}
.note .nh .ts{margin-left:auto}
.note .nb{font-size:14px;margin-top:8px;line-height:1.7}
.note .nq{background:#f1f5f9;border-left:3px solid var(--primary);padding:8px 12px;border-radius:8px;font-size:12px;color:#475569;margin-top:8px}
.note-editor{background:var(--card);margin:0 16px;border-radius:16px;box-shadow:var(--shadow);padding:14px 16px}
.note-editor textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:12px;font-size:14px;font-family:inherit;outline:none;resize:none;min-height:90px}
.note-editor .tb{display:flex;gap:10px;margin-top:10px;font-size:12px;color:var(--muted)}
/* 分类树 */
.tree{background:var(--card);margin:0 16px;border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
.tree .p{display:flex;align-items:center;gap:10px;padding:13px 16px;font-size:14px;font-weight:600;border-bottom:1px solid var(--line)}
.tree .c{display:flex;align-items:center;gap:10px;padding:11px 16px 11px 40px;font-size:13px;border-bottom:1px solid var(--line);color:#334155}
.tree .c:last-child{border-bottom:none}
.tree .c .n{margin-left:auto;font-size:11px;color:var(--muted)}
/* 订单 */
.order-card{background:var(--card);margin:0 16px 12px;border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
.order-card .oh{display:flex;align-items:center;gap:8px;padding:11px 16px;font-size:12px;color:var(--muted);border-bottom:1px solid var(--line)}
.order-card .ob{display:flex;gap:12px;padding:12px 16px}
.order-card .oc{width:56px;height:56px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:26px;color:#fff;flex:none}
.order-card .of{display:flex;justify-content:space-between;padding:10px 16px;border-top:1px solid var(--line);font-size:13px}
.pill{font-size:11px;padding:2px 8px;border-radius:8px}