/* 移动端 H5 样式 —— 手机外壳固定 + 内部滚动，TabBar 固定底部 */
.mobile-frame{
  max-width:420px;margin:16px auto;background:#fff;
  height:calc(100vh - 100px); /* 顶部 proto-top(≈50px) + 上下边距 */
  box-shadow:0 0 40px rgba(10,26,58,.18);position:relative;
  display:flex;flex-direction:column;overflow:hidden;border-radius:16px;
}
.m-status{background:var(--navy-800);color:#fff;padding:12px 16px;display:flex;align-items:center;justify-content:space-between;font-size:12px;flex-shrink:0}
.m-status .time{font-weight:700}
.m-status .icons{display:flex;gap:12px}
.m-header{padding:14px 16px;font-size:16px;font-weight:800;background:#fff;border-bottom:1px solid var(--line-2);flex-shrink:0}
.m-scroll{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}
.m-hero{background:linear-gradient(150deg,#0A1A3A 0%,#18376b 60%,#24509D 100%);padding:22px 18px;color:#fff;position:relative;overflow:hidden}
.m-hero::before{content:"";position:absolute;top:-40px;right:-30px;width:150px;height:150px;border-radius:50%;background:radial-gradient(circle,rgba(242,193,78,.35),transparent 70%)}
.m-hero .hi{font-size:13px;color:rgba(255,255,255,.7);margin-bottom:6px;position:relative;z-index:1}
.m-hero .name{font-size:20px;font-weight:800;position:relative;z-index:1}
.m-hero .chip-row{display:flex;gap:10px;margin-top:14px;position:relative;z-index:1}
.m-chip{background:rgba(255,255,255,.12);backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.18);border-radius:var(--r-full);padding:7px 14px;font-size:12px}
.m-chip b{color:var(--gold-300)}
.m-content{padding:16px}
.m-course-card{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--sh-s);padding:14px;margin-bottom:12px;display:flex;gap:12px}
.m-course-card .thumb{width:72px;height:54px;border-radius:10px;background:linear-gradient(135deg,var(--navy-500),var(--navy-700));flex-shrink:0;display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px}
.m-course-card .info{flex:1;min-width:0}
.m-course-card .info h4{font-size:14px;font-weight:700;margin-bottom:5px}
.m-course-card .info .prog{font-size:11.5px;color:var(--ink-3);margin-bottom:6px}
.m-course-card .info .bar{height:5px;background:var(--line-2);border-radius:3px;overflow:hidden}
.m-course-card .info .bar i{display:block;height:100%;background:var(--grad-jade);border-radius:3px}
.m-tabbar{flex-shrink:0;background:#fff;border-top:1px solid var(--line-2);display:flex;padding:8px 0 12px;box-shadow:0 -2px 12px rgba(15,37,71,.06)}
.m-tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;font-size:10.5px;color:var(--ink-3);text-decoration:none;font-weight:600}
.m-tabbar a .t-ic{font-size:20px}
.m-tabbar a.on{color:var(--navy-600)}
.m-btn-block{width:100%;padding:13px;border:none;border-radius:12px;background:var(--grad-navy);color:#fff;font-size:14px;font-weight:700;cursor:pointer}
.m-section-title{font-size:14px;font-weight:800;margin:18px 0 10px}